My world molecular machine iridium mine
Publish: 2021-05-16 04:21:39
1.
There are four ways to get it by mining:
of course, the premise is that you have IC2 and solar energy expansion
the old version of IC2 can use the UU material machine, and then the UU can be placed into the I-shape, and seven UUS can get one ore
the new version of IC2 can not only use UU material machine, but also machine
the molecular recombiner can be used for solar energy expansion, in which iron ingots are put, which requires a lot of electricity
the last way is to go to the ngeon and open the box. In the pit, open the box harvester
2.
Hello, Zhonggong ecation is at your service
the recruitment and examination announcement of Shanghai public institutions in the second half of 2015 has not been released yet
the relevant time nodes of recruitment and examination of Shanghai public institutions in the second half of 2014 are as follows:
registration time: 10:00 on September 22, 2014 to 16:00 on September 26, 2014 Release time of test score line: 10:00, December 3, 2014
if you have any questions, you are welcome to ask the public ecation enterprises
3.
7. CNC milling machine is a kind of automatic processing equipment developed on the basis of general milling machine. Their processing technology is basically the same, and their structure is also similar. CNC milling machines are divided into two categories: without tool magazine and with tool magazine. The CNC milling machine with tool magazine is also called machining center< In addition to the characteristics of ordinary milling machine, CNC milling has the following characteristics:
machining center
1. Parts processing has strong adaptability and good flexibility, and can process parts with complex contour or difficult to control size, such as mold parts, shell parts, etc
2. It can process parts that can not be processed by ordinary machine tools or are difficult to process, such as complex curve parts described by mathematical models and 3D space surface parts
3. It can process parts that need to be processed in multiple processes after one clamping and positioning< The pulse equivalent of numerical control device is generally 0.001mm, and the high-precision numerical control system can reach 0.1 mm μ m. In addition, NC machining also avoids the operator's operation error
5. High degree of proction automation can rece the labor intensity of operators. It is beneficial to the automation of proction management
6. With high proction efficiency, CNC milling machines generally do not need to use special fixtures and other special process equipment. When replacing workpieces, they only need to call the processing program, clamping tools and adjusting tool data stored in the CNC device, thus greatly shortening the proction cycle. Secondly, the CNC milling machine has the functions of milling machine, boring machine and drilling machine, which makes the process highly concentrated and greatly improves the proction efficiency. In addition, the spindle speed and feed speed of CNC milling machine are continuously variable, so it is beneficial to select the best cutting parameters
structure
basic structure
CNC milling machines have various forms. Although different types of CNC milling machines differ in composition, they have many similarities. The composition of xk5040a CNC vertical lifting table milling machine is introced as an example. Xi saw 040a CNC vertical lifting table milling machine is equipped with Ⅳ 43ma CNC system, which adopts full digital AC servo drive. The machine tool consists of six main parts: bed part, milling head part, worktable part, cross feed part, lifting table part, cooling and lubrication part. The internal layout of the bed is reasonable and has good rigidity. There are four adjusting bolts on the base to facilitate the horizontal adjustment of the machine tool. The cutting fluid reservoir is set inside the machine tool base
system classification
① cooling system. The cooling system of the machine tool is composed of a cooling pump, a water outlet pipe, a water return pipe, a switch and a nozzle. The cooling pump is installed in the inner cavity of the base of the machine tool. The cooling pump pumps the cutting fluid from the liquid storage pool in the base to the water outlet pipe, and then sprays it out through the nozzle to cool the cutting area< (2) lubrication system and method. The lubrication system is composed of manual lubricating oil pump, oil separator, throttle valve, oil pipe, etc. The machine tool adopts the periodic lubrication mode, uses the manual lubricating oil pump, and lubricates the spindle sleeve, longitudinal and transverse guide rail and three-way ball screw through the oil distributor, so as to improve the service life of the machine tool
from the perspective of the characteristics of digital control technology, as the CNC machine tool adopts servo motor, the application of digital technology realizes the direct control of the working sequence and movement displacement of the executive parts of the machine tool, the gearbox structure of the traditional machine tool is cancelled or partially cancelled, so the mechanical structure is greatly simplified. Digital control also requires high transmission stiffness and no transmission clearance of mechanical system to ensure the execution of control instructions and the realization of control quality. At the same time, with the continuous improvement of computer level and control ability, it is possible to allow more functional components to perform all kinds of auxiliary functions at the same time on the same machine tool, so the mechanical structure of CNC machine tool has higher integrated functional requirements than traditional machine tool
in terms of the requirements of manufacturing technology development, with the emergence of new materials and new processes, as well as the requirements of market competition for low cost, metal cutting is developing in the direction of higher cutting speed and precision, higher proction efficiency and more reliable system. This requires that CNC machine tools developed on the basis of traditional machine tools have higher accuracy, higher driving power, better dynamic, static and thermal stiffness of mechanical mechanism, more reliable work, and can achieve long-term continuous operation and as little downtime as possible< The milling head is composed of two parts: a stepless gearbox and a milling head. The spindle of milling head is supported on high precision bearing to ensure high rotation precision and good rigidity; The spindle is equipped with a quick tool change nut, and the front taper is 1 $0505; The main shaft adopts mechanical stepless speed change, which has wide adjustment range, stable transmission and convenient operation. The brake mechanism can make the spindle brake quickly, which can save the auxiliary time. When braking, the brake handle is used to open the stop ring to make the spindle brake immediately. When starting the main motor, pay attention to loosen the spindle brake handle. The milling head is also equipped with a servo motor, an internal toothed pulley, a ball screw pair and a spindle sleeve, which form a vertical (Z-direction) feed transmission chain to make the spindle move vertically and linearly
the table and saddle are supported on the wide horizontal guide rail of the lifting table, and the longitudinal feed of the table is driven by a servo motor installed on the right end of the table. The precision ball screw is driven by the inner toothed pulley, so that the worktable can obtain longitudinal feed. The left end of the worktable is equipped with a hand wheel and a dial for manual operation. Turclle B surface is used on both the vertical and horizontal guide rail surfaces of the saddle, so as to improve the wear resistance of the guide rail, the stability of movement and the maintenance of accuracy, and eliminate the phenomenon of low-speed crawling
basic parts
the basic parts of CNC milling machine usually refer to the bed, column, beam, worktable, base and other structural parts, whose size is large (commonly known as large parts), well constitutes the basic framework of the machine tool. Other parts are attached to the base part, and some parts need to move along the base part. As the foundation plays the role of supporting and guiding, the requirement for the foundation is good stiffness
fixture
CNC machine tools are mainly used to process complex parts, but the structure of the fixture used is often not complex. The selection of NC milling machine fixture can first be determined according to the batch of proction parts
for single piece, small batch and heavy workload mold processing, generally, positioning and clamping can be realized directly on the worktable of the machine tool by adjustment, and then the position of the parts can be determined by setting the processing coordinate system
for a certain number of parts, the fixture with simple structure can be selected. For example, when machining the cam surface of the cam part shown in Figure 1, the cam fixture shown in Figure 2 can be used. The two locating pins 3 and 5 and the locating block 4 form a six point positioning of two pins on one side, and the pressing plate 6 and the clamping nut 7 realize clamping. In the figure: 1 - cam parts, 2 - clamp details, 3 - Cylindrical locating pin, 4 - locating block, 5 - Diamond locating pin, 6 - pressing plate, 7 - clamping nut
cutting tools
the cutting tools used in CNC milling machine should be selected with good rigidity and high rability according to the material, geometric shape, surface quality requirements, heat treatment state, cutting performance and machining allowance of the machined parts. Common cutting tools are shown in Figure 3
(1) selection of milling cutter types
according to the geometry of the machined parts, the types of cutters selected are:
1) when machining curved surface parts, in order to ensure that the cutting edge of the cutter is tangent to the machining contour at the cutting point, and avoid the interference between the cutting edge and the workpiece contour, ball end cutters are generally used, two edge cutters are used for rough machining, four edge cutters are used for semi finish machining and finish machining, As shown in Figure 4
2) when milling large plane: in order to improve proction efficiency and machining surface roughness, insert type disc milling cutter is generally used, as shown in Figure 5
3) when milling small plane or step surface, general milling cutter is generally used, as shown in Fig. 6
4) when milling keyway, in order to ensure the dimensional accuracy of keyway, two edge keyway milling cutter is generally used, as shown in Figure 7
5) for hole processing, drill, boring tool and other hole processing tools can be used, as shown in Figure 8< (2) milling cutter structure selection
milling cutter is generally composed of blade, positioning element, clamping element and cutter body. Because there are many kinds of positioning and clamping methods for the blade on the cutter body, and there are different types of positioning elements of the blade, there are many kinds of milling cutter structures, and there are many classification methods. It can be selected according to the arrangement of blades. The arrangement of blades can be divided into two types: flat structure and vertical structure
flat structure (radial arrangement of blades)
the structure of flat structure milling cutter (as shown in Figure 9) has good processability and is easy to process, and can use non hole blade (the blade price is low and can be reground). Due to the need for clamping elements, a part of the blade is covered, the chip space is small, and the cemented carbide section in the direction of cutting force is small, so the flat structure milling cutter is generally used for light and medium milling
vertical structure (blade tangential arrangement)
the blade of vertical structure milling cutter (as shown in FIG. 10) is fixed on the tool groove with only one screw, which has simple structure and convenient rotation. Although there are few tool parts, it is difficult to process the tool body. Generally, it needs 5-axis machining center to process. Because the blade is clamped by cutting force, the clamping force increases with the increase of cutting force, so the clamping element can be omitted and the chip space can be increased. Due to the tangential installation of the inserts, the cross section of cemented carbide in the direction of cutting force is large, so it can be used for large cutting depth and large tool feed. This kind of milling cutter is suitable for heavy and medium milling
the angle of milling cutter includes rake angle, rake angle, main deflection angle, minor deflection angle, edge inclination angle, etc. In order to meet the needs of different processing, there are a variety of angle combinations. The most important angles are the main deflection angle and rake angle (the main deflection angle and rake angle of the tool are generally specified in the proct samples of the manufacturer)
the main deflection angle Kr
is the angle between the cutting edge and the cutting plane, as shown in Figure 11. The main deflection angle of milling cutter is 90 °、 eighty-eight °、 seventy-five °、 seventy °、 sixty °、 forty-five ° And so on
the main deflection angle has a great influence on the radial cutting force and cutting depth. The radial cutting force directly affects the cutting power and the anti vibration performance of the cutting tool. The smaller the main deflection angle of the milling cutter, the smaller the radial cutting force and the better the vibration resistance, but the cutting depth also decreases< br />90 ° The main deflection angle is selected when milling the plane with shoulder, and it is generally not used for pure plane machining. This kind of cutting tool has good versatility (it can process both step surface and plane), so it can be used in single piece and small batch machining. Because the radial cutting force of this kind of tool is equal to the cutting force, the feed resistance is large, and it is easy to vibrate, so the machine tool is required to have high power and enough rigidity. When processing the plane with shoulder, 88 can also be selected ° The main deflection angle of milling cutter is 90 ° The cutting performance of the main deflection angle milling cutter has been improved to a certain extent< br />60 °～ seventy-five ° The main deflection angle is suitable for rough machining of plane milling. Because the radial cutting force is obviously reced (especially 60 ° The vibration resistance is greatly improved, the cutting is smooth and light, so it should be preferred in plane machining. seventy-five ° The main deflection angle milling cutter is a general tool, which has a wide range of application; sixty ° The main deflection angle milling cutter is mainly used for rough milling and semi finish milling on boring and milling machines and machining centers< br />45 ° The radial cutting force of this kind of milling cutter with main deflection angle is greatly reced by about
machining center
1. Parts processing has strong adaptability and good flexibility, and can process parts with complex contour or difficult to control size, such as mold parts, shell parts, etc
2. It can process parts that can not be processed by ordinary machine tools or are difficult to process, such as complex curve parts described by mathematical models and 3D space surface parts
3. It can process parts that need to be processed in multiple processes after one clamping and positioning< The pulse equivalent of numerical control device is generally 0.001mm, and the high-precision numerical control system can reach 0.1 mm μ m. In addition, NC machining also avoids the operator's operation error
5. High degree of proction automation can rece the labor intensity of operators. It is beneficial to the automation of proction management
6. With high proction efficiency, CNC milling machines generally do not need to use special fixtures and other special process equipment. When replacing workpieces, they only need to call the processing program, clamping tools and adjusting tool data stored in the CNC device, thus greatly shortening the proction cycle. Secondly, the CNC milling machine has the functions of milling machine, boring machine and drilling machine, which makes the process highly concentrated and greatly improves the proction efficiency. In addition, the spindle speed and feed speed of CNC milling machine are continuously variable, so it is beneficial to select the best cutting parameters
structure
basic structure
CNC milling machines have various forms. Although different types of CNC milling machines differ in composition, they have many similarities. The composition of xk5040a CNC vertical lifting table milling machine is introced as an example. Xi saw 040a CNC vertical lifting table milling machine is equipped with Ⅳ 43ma CNC system, which adopts full digital AC servo drive. The machine tool consists of six main parts: bed part, milling head part, worktable part, cross feed part, lifting table part, cooling and lubrication part. The internal layout of the bed is reasonable and has good rigidity. There are four adjusting bolts on the base to facilitate the horizontal adjustment of the machine tool. The cutting fluid reservoir is set inside the machine tool base
system classification
① cooling system. The cooling system of the machine tool is composed of a cooling pump, a water outlet pipe, a water return pipe, a switch and a nozzle. The cooling pump is installed in the inner cavity of the base of the machine tool. The cooling pump pumps the cutting fluid from the liquid storage pool in the base to the water outlet pipe, and then sprays it out through the nozzle to cool the cutting area< (2) lubrication system and method. The lubrication system is composed of manual lubricating oil pump, oil separator, throttle valve, oil pipe, etc. The machine tool adopts the periodic lubrication mode, uses the manual lubricating oil pump, and lubricates the spindle sleeve, longitudinal and transverse guide rail and three-way ball screw through the oil distributor, so as to improve the service life of the machine tool
from the perspective of the characteristics of digital control technology, as the CNC machine tool adopts servo motor, the application of digital technology realizes the direct control of the working sequence and movement displacement of the executive parts of the machine tool, the gearbox structure of the traditional machine tool is cancelled or partially cancelled, so the mechanical structure is greatly simplified. Digital control also requires high transmission stiffness and no transmission clearance of mechanical system to ensure the execution of control instructions and the realization of control quality. At the same time, with the continuous improvement of computer level and control ability, it is possible to allow more functional components to perform all kinds of auxiliary functions at the same time on the same machine tool, so the mechanical structure of CNC machine tool has higher integrated functional requirements than traditional machine tool
in terms of the requirements of manufacturing technology development, with the emergence of new materials and new processes, as well as the requirements of market competition for low cost, metal cutting is developing in the direction of higher cutting speed and precision, higher proction efficiency and more reliable system. This requires that CNC machine tools developed on the basis of traditional machine tools have higher accuracy, higher driving power, better dynamic, static and thermal stiffness of mechanical mechanism, more reliable work, and can achieve long-term continuous operation and as little downtime as possible< The milling head is composed of two parts: a stepless gearbox and a milling head. The spindle of milling head is supported on high precision bearing to ensure high rotation precision and good rigidity; The spindle is equipped with a quick tool change nut, and the front taper is 1 $0505; The main shaft adopts mechanical stepless speed change, which has wide adjustment range, stable transmission and convenient operation. The brake mechanism can make the spindle brake quickly, which can save the auxiliary time. When braking, the brake handle is used to open the stop ring to make the spindle brake immediately. When starting the main motor, pay attention to loosen the spindle brake handle. The milling head is also equipped with a servo motor, an internal toothed pulley, a ball screw pair and a spindle sleeve, which form a vertical (Z-direction) feed transmission chain to make the spindle move vertically and linearly
the table and saddle are supported on the wide horizontal guide rail of the lifting table, and the longitudinal feed of the table is driven by a servo motor installed on the right end of the table. The precision ball screw is driven by the inner toothed pulley, so that the worktable can obtain longitudinal feed. The left end of the worktable is equipped with a hand wheel and a dial for manual operation. Turclle B surface is used on both the vertical and horizontal guide rail surfaces of the saddle, so as to improve the wear resistance of the guide rail, the stability of movement and the maintenance of accuracy, and eliminate the phenomenon of low-speed crawling
basic parts
the basic parts of CNC milling machine usually refer to the bed, column, beam, worktable, base and other structural parts, whose size is large (commonly known as large parts), well constitutes the basic framework of the machine tool. Other parts are attached to the base part, and some parts need to move along the base part. As the foundation plays the role of supporting and guiding, the requirement for the foundation is good stiffness
fixture
CNC machine tools are mainly used to process complex parts, but the structure of the fixture used is often not complex. The selection of NC milling machine fixture can first be determined according to the batch of proction parts
for single piece, small batch and heavy workload mold processing, generally, positioning and clamping can be realized directly on the worktable of the machine tool by adjustment, and then the position of the parts can be determined by setting the processing coordinate system
for a certain number of parts, the fixture with simple structure can be selected. For example, when machining the cam surface of the cam part shown in Figure 1, the cam fixture shown in Figure 2 can be used. The two locating pins 3 and 5 and the locating block 4 form a six point positioning of two pins on one side, and the pressing plate 6 and the clamping nut 7 realize clamping. In the figure: 1 - cam parts, 2 - clamp details, 3 - Cylindrical locating pin, 4 - locating block, 5 - Diamond locating pin, 6 - pressing plate, 7 - clamping nut
cutting tools
the cutting tools used in CNC milling machine should be selected with good rigidity and high rability according to the material, geometric shape, surface quality requirements, heat treatment state, cutting performance and machining allowance of the machined parts. Common cutting tools are shown in Figure 3
(1) selection of milling cutter types
according to the geometry of the machined parts, the types of cutters selected are:
1) when machining curved surface parts, in order to ensure that the cutting edge of the cutter is tangent to the machining contour at the cutting point, and avoid the interference between the cutting edge and the workpiece contour, ball end cutters are generally used, two edge cutters are used for rough machining, four edge cutters are used for semi finish machining and finish machining, As shown in Figure 4
2) when milling large plane: in order to improve proction efficiency and machining surface roughness, insert type disc milling cutter is generally used, as shown in Figure 5
3) when milling small plane or step surface, general milling cutter is generally used, as shown in Fig. 6
4) when milling keyway, in order to ensure the dimensional accuracy of keyway, two edge keyway milling cutter is generally used, as shown in Figure 7
5) for hole processing, drill, boring tool and other hole processing tools can be used, as shown in Figure 8< (2) milling cutter structure selection
milling cutter is generally composed of blade, positioning element, clamping element and cutter body. Because there are many kinds of positioning and clamping methods for the blade on the cutter body, and there are different types of positioning elements of the blade, there are many kinds of milling cutter structures, and there are many classification methods. It can be selected according to the arrangement of blades. The arrangement of blades can be divided into two types: flat structure and vertical structure
flat structure (radial arrangement of blades)
the structure of flat structure milling cutter (as shown in Figure 9) has good processability and is easy to process, and can use non hole blade (the blade price is low and can be reground). Due to the need for clamping elements, a part of the blade is covered, the chip space is small, and the cemented carbide section in the direction of cutting force is small, so the flat structure milling cutter is generally used for light and medium milling
vertical structure (blade tangential arrangement)
the blade of vertical structure milling cutter (as shown in FIG. 10) is fixed on the tool groove with only one screw, which has simple structure and convenient rotation. Although there are few tool parts, it is difficult to process the tool body. Generally, it needs 5-axis machining center to process. Because the blade is clamped by cutting force, the clamping force increases with the increase of cutting force, so the clamping element can be omitted and the chip space can be increased. Due to the tangential installation of the inserts, the cross section of cemented carbide in the direction of cutting force is large, so it can be used for large cutting depth and large tool feed. This kind of milling cutter is suitable for heavy and medium milling
the angle of milling cutter includes rake angle, rake angle, main deflection angle, minor deflection angle, edge inclination angle, etc. In order to meet the needs of different processing, there are a variety of angle combinations. The most important angles are the main deflection angle and rake angle (the main deflection angle and rake angle of the tool are generally specified in the proct samples of the manufacturer)
the main deflection angle Kr
is the angle between the cutting edge and the cutting plane, as shown in Figure 11. The main deflection angle of milling cutter is 90 °、 eighty-eight °、 seventy-five °、 seventy °、 sixty °、 forty-five ° And so on
the main deflection angle has a great influence on the radial cutting force and cutting depth. The radial cutting force directly affects the cutting power and the anti vibration performance of the cutting tool. The smaller the main deflection angle of the milling cutter, the smaller the radial cutting force and the better the vibration resistance, but the cutting depth also decreases< br />90 ° The main deflection angle is selected when milling the plane with shoulder, and it is generally not used for pure plane machining. This kind of cutting tool has good versatility (it can process both step surface and plane), so it can be used in single piece and small batch machining. Because the radial cutting force of this kind of tool is equal to the cutting force, the feed resistance is large, and it is easy to vibrate, so the machine tool is required to have high power and enough rigidity. When processing the plane with shoulder, 88 can also be selected ° The main deflection angle of milling cutter is 90 ° The cutting performance of the main deflection angle milling cutter has been improved to a certain extent< br />60 °～ seventy-five ° The main deflection angle is suitable for rough machining of plane milling. Because the radial cutting force is obviously reced (especially 60 ° The vibration resistance is greatly improved, the cutting is smooth and light, so it should be preferred in plane machining. seventy-five ° The main deflection angle milling cutter is a general tool, which has a wide range of application; sixty ° The main deflection angle milling cutter is mainly used for rough milling and semi finish milling on boring and milling machines and machining centers< br />45 ° The radial cutting force of this kind of milling cutter with main deflection angle is greatly reced by about
8. There may be fragments of iridium or whole iridium in the ngeon box
if you have advanced solar mod, you can use molecular remodeling machine to reshape iron to obtain iridium.
if you have advanced solar mod, you can use molecular remodeling machine to reshape iron to obtain iridium.
9. Using the most advanced machine of basic instry to make UU material, the UU material is arranged to synthesize iridium, which cannot be obtained by digging
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