CN116223030A - Quick test device of numerical control machining center reliability - Google Patents
Quick test device of numerical control machining center reliability Download PDFInfo
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- CN116223030A CN116223030A CN202310507694.7A CN202310507694A CN116223030A CN 116223030 A CN116223030 A CN 116223030A CN 202310507694 A CN202310507694 A CN 202310507694A CN 116223030 A CN116223030 A CN 116223030A
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- 238000003825 pressing Methods 0.000 claims description 42
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- 238000000034 method Methods 0.000 abstract description 7
- 238000003754 machining Methods 0.000 abstract description 5
- 239000002131 composite material Substances 0.000 abstract description 2
- 238000005520 cutting process Methods 0.000 description 6
- 238000004088 simulation Methods 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 2
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- 238000011056 performance test Methods 0.000 description 2
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- 230000008878 coupling Effects 0.000 description 1
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- 238000005859 coupling reaction Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
- G01M13/02—Gearings; Transmission mechanisms
- G01M13/025—Test-benches with rotational drive means and loading means; Load or drive simulation
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
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Abstract
The invention provides a quick test device for reliability of a numerical control machining center, which belongs to the technical field of mechanical test equipment and comprises a test rod (10), a contact block (2), a torque loading part, a radial loading part, an axial loading part and a force guide assembly (14), wherein the torque loading part loads torque to a main shaft (1) of the numerical control machining center through the test rod (10), the radial loading part loads the torque to the main shaft (1) of the numerical control machining center through the contact block (2) and the test rod (10), and the axial loading part loads the main shaft (1) axially in the numerical control machining process through the force guide assembly (14), the contact block (2) and the test rod (10) at the side of the main shaft (1) in the numerical control machining process. The quick test device for the reliability of the numerical control machining center can realize a composite loading test of the numerical control machining center, adopts an all-electric system, improves a force application structure, and enables the loading test process to be easier to control.
Description
Technical Field
The invention belongs to the technical field of mechanical test equipment, and particularly relates to a quick reliability test device for a numerical control machining center.
Background
Numerical control machining centers are used as high-efficiency automatic machine tools and become indispensable machining equipment in various industries. The machine tool products of each machine tool manufacturing enterprise often have different performances due to the different machine tool manufacturing enterprises, and the actual processing capacity of the machine tools also has obvious differences due to the differences of the machine tool performances. Therefore, before the machine tool is shaped, the performance test of the machine tool is an indispensable link, and faults possibly occurring in the use process of the machine tool can be continuously found through the performance test process of the machine tool, so that the original design is improved according to the fault diagnosis result, and the performance of the machine tool is further improved.
Chinese patent publication No. CN110849624a discloses a radial loading device for a spindle of a machine tool, which can only simulate the radial loading condition of the spindle of the machine tool; chinese patent publication No. CN217475507U discloses a metal cutting machine spindle cutting force loading device, which can only load the machine spindle in axial direction or radial direction singly, and does not have the capability of performing simulation test on the machine spindle in axial direction and radial direction simultaneously. However, in actual work, the stress of the spindle of the numerical control machining center is multiple, and the spindle can be subjected to independent radial force or axial force, and the conditions of axial force, radial force, cutting torque and the like can also occur, so that in order to make the test result of the numerical control machining center more true, whether the numerical control machining center meets the requirements of various actual working conditions or not is verified, the reliability of the working conditions is ensured, and the simulation loading device for the numerical control machining center test should consider the simulation loading of the spindle of the numerical control machining center in multiple directions.
The existing driving device of the machine tool spindle load loading device is generally a hydraulic cylinder or a pneumatic cylinder, the driving device loads radial force on the spindle through a contact head which is in contact with a cutter bar or in rolling mode and in contact with a workpiece, the test process is not easy to control, and a corresponding air compressor or hydraulic pump is required to be adapted, so that the loading system is complex in structure and high in cost.
Disclosure of Invention
The invention aims to solve the technical problems that the existing numerical control machining center reliability test device cannot truly simulate the axial force, the radial force and the cutting torque borne by the numerical control machining center under the actual working condition, the existing loading device is complex in structure, the loading process cannot be well controlled, and the cost is high.
In order to solve the technical problems, the invention provides a quick reliability test device for a numerical control machining center, which comprises a main shaft of the numerical control machining center, a test rod, an axial loading device, a radial loading device and a torque loading device, wherein one end of the test rod penetrates through a contact block to be fixedly connected with the main shaft of the numerical control machining center, the contact block is axially fixed relative to the test rod, the test rod is limited to be in a single degree-of-freedom state in which the rotation direction is movable, the other end of the test rod is fixedly connected with an output end of the torque loading device, a fixing frame III is arranged at the lower end of the torque loading device, the radial loading device is arranged on one side of the contact block, the output end of the radial loading device is contacted with a side wall of the contact block, a fixing frame II is arranged at the lower end of the radial loading device, the axial loading device is arranged on the other side of the contact block, a fixing frame I is arranged at the lower end of the axial loading device, a force guide component is arranged at a position between the contact block and the axial loading device, and the axial loading device can apply loading force along the main shaft of the numerical control machining center to the contact block through the force guide component.
Further, the force guiding assembly comprises a fixing part and a pressing rod, the fixing part extends upwards to be rotationally connected with the pressing rod, the pressing rod can horizontally rotate around the fixing part, one end of the pressing rod is contacted with one side, far away from the spindle of the numerical control machining center, of the contact block, and the other end of the pressing rod is contacted with the output end of the axial loading device.
Further, the depression bar is upper and lower two-layer structure, goes up the depression bar and is equipped with the gasket in the one end that is close to axial loading device's output, the gasket respectively with last depression bar and lower depression bar fixed connection, and with axial loading device's output contact, go up depression bar and lower depression bar and be equipped with the backing ring in the one end that is close to the contact block, the backing ring is hollow annular structure, the check rod does not contact the backing ring when passing from the hollow part of backing ring, backing ring respectively with last depression bar and lower depression bar fixed connection, and keep away from numerical control machining center main shaft one side contact with the contact block.
Further, a first groove corresponding to the gasket is formed in the position, which is in contact with the output end of the axial loading device, of the gasket, and a second groove corresponding to the contact block is formed in the position, which is in contact with the output end of the radial loading device, of the contact block.
Further, the horizontal distance from the fixing part to the contact point of the pressing rod and the contact block is shorter than the horizontal distance from the fixing part to the contact point of the pressing rod and the output end of the axial loading device.
Further, the axial loading device comprises a servo motor, a guide rail and a fixed plate which are fixed on a first fixed frame, and further comprises a screw rod which is parallel to the guide rail, one end of the screw rod is fixedly connected with the output end of the servo motor, the other end of the screw rod is fixed on the fixed plate through a bearing, a nut matched with the screw rod is screwed on the screw rod, the nut extends downwards and is clamped with the guide rail, so that the nut can only move along the axial direction of the screw rod, a connecting rod is fixedly arranged on one side of the nut close to the fixed plate, the connecting rod extends towards the fixed plate and penetrates through the fixed plate, the connecting rod freely penetrates through the fixed plate and is parallel to the screw rod, the other end of the connecting rod is fixedly connected with a sliding block, the push rod is fixedly arranged on one side close to the sliding block and is parallel to the screw rod, the guide rod extends towards the sliding block and penetrates through the sliding block, the guide rod freely penetrates through the sliding block and is parallel to the screw rod, a spring is sleeved on the guide rod, and the spring is arranged between the push rod and the sliding block; the radial loading device comprises a servo motor, a guide rail and a fixed plate which are fixed on a second fixing frame, and further comprises a screw rod which is parallel to the guide rail, one end of the screw rod is fixedly connected with the output end of the servo motor, the other end of the screw rod is fixed on the fixed plate through a bearing, a nut matched with the screw rod is screwed on the screw rod, the nut extends downwards and is clamped with the guide rail, the nut can only move along the axial direction of the screw rod, a connecting rod is fixedly arranged on one side, close to the fixed plate, of the nut, the connecting rod extends towards the direction of the fixed plate and penetrates through the fixed plate, the connecting rod freely penetrates through the fixed plate and is parallel to the screw rod, a sliding block is fixedly connected to the other end of the connecting rod, a guide rod which is parallel to the screw rod is fixedly arranged on one side, close to the sliding block, the guide rod extends towards the direction of the sliding block and penetrates through the sliding block, and is parallel to the screw rod, a spring is sleeved on the guide rod, and the spring is arranged between the guide rod and the sliding block.
Further, the torque loading device is a dynamometer.
Furthermore, one end of the checking rod is fixedly connected with the main shaft of the numerical control machining center in a plugging mode, and the other end of the checking rod is fixedly connected with the output end of the torque loading device through a coupler.
After the structure is adopted, the axial loading device can carry out axial loading on the main shaft of the numerical control machining center by the force guide assembly at the side of the main shaft of the numerical control machining center, so that a composite loading test for carrying out axial loading, radial loading and cutting torque loading on the numerical control machining center can be realized by using the invention. Meanwhile, the whole electric system is adopted, the force application structure is improved, the whole structure is simplified, and the loading test process is easier to control.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic structural view of a force directing assembly of the present invention;
FIG. 3 is a schematic view of the structure of the contact block and test rod of the present invention;
fig. 4 is a schematic structural view of an axial loading device or a radial loading device of the present invention.
The reference numerals in the figures are as follows: 1. a numerical control machining center spindle; 2. a contact block; 3. a compression bar; 4. An axial loading device; 5. a first fixing frame; 6. a torque loading device; 7. a fixing part; 8. a second fixing frame; 9. an axial loading device; 10. a test rod; 11. a third fixing frame; 12. a coupling; 13. a gasket; 14. a force guiding assembly; 15. a backing ring; 16. a servo motor; 17. a screw rod; 18. a nut; 19. a connecting rod; 20. a fixing plate; 21. a slide block; 22. a spring; 23. a push rod; 24. a guide rod; 25. a guide rail; 26. a baffle; 27. a groove I; 28. a second groove; 31. a pressing rod is arranged; 32. and pressing down the rod.
Detailed Description
For better explanation of the present invention, for easy understanding, the technical solution and effects of the present invention will be described in detail below by way of specific embodiments with reference to the accompanying drawings.
As shown in fig. 1, the quick test device for reliability of the numerical control machining center comprises a main shaft 1 of the numerical control machining center, a test rod 10, a torque loading device 6, a radial loading device 9 and an axial loading device 4, wherein one end of the test rod 10 penetrates through a contact block 2 to be fixedly connected with the main shaft 1 of the numerical control machining center, the contact block 2 is axially fixed relative to the test rod 10, the test rod 10 is limited to be in a single degree-of-freedom state in which the rotation direction is movable, the other end of the test rod 10 is fixedly connected with the output end of the torque loading device 6, a fixing frame three 11 is arranged at the lower end of the torque loading device 6, and torque loading on the main shaft 1 of the numerical control machining center is realized through transmission of the test rod 10.
The radial loading device 9 is arranged on one side of the contact block 2, the output end of the radial loading device 9 is in contact with the side wall of the contact block 2, the second fixing frame 8 is arranged at the lower end of the radial loading device 9, the radial loading device 9 applies a radial force to the contact block 2 during testing, and radial loading of the main shaft of the data processing center is realized through conduction of the test rod 10.
The axial loading device 4 is arranged on the other side of the contact block 2, the lower end of the axial loading device 4 is provided with a fixing frame 5, a force guide assembly 14 is arranged at a position between the contact block 2 and the axial loading device 4, the force guide assembly 14 comprises a fixing part 7 and a pressing rod 3, the fixing part 7 extends upwards to be rotationally connected with the pressing rod 3, the pressing rod 3 can horizontally rotate around the fixing part 7, one end of the pressing rod 3 is contacted with one side, far away from the numerical control machining center main shaft 1, of the contact block 2, the other end of the pressing rod 3 is contacted with the output end of the axial loading device 4, and a lever structure formed by the pressing rod 3 and the fixing part 7 conducts loading force from the axial loading device 4 to the contact block 2 during testing, so that axial loading of the numerical control machining center main shaft 1 is realized through conduction of the test rod 10.
During the test, the axial loading device 4, the radial loading device 9 and the torque loading device 6 are fixedly arranged on the frame of the test numerical control machining center through the first fixing frame 5, the second fixing frame 8 and the third fixing frame 11 respectively, and the fixing part 7 of the force guiding assembly 14 is fixedly arranged on the frame of the test numerical control machining center. Starting the numerical control machining center, and independently starting any loading device after the main shaft 1 runs stably in the numerical control machining, so that a single loading test can be carried out on the numerical control machining center; meanwhile, the axial loading device 4, the radial loading device 9 and the torque loading device 6 are started to realize a compound loading test for axial loading, radial loading and cutting torque loading of the numerical control machining center so as to simulate the real working condition during operation.
Further, as shown in fig. 2, the pressing rod 3 has an upper layer structure and a lower layer structure, one end of the upper pressing rod 31 and the lower pressing rod 32, which is close to the output end of the axial loading device 4, is provided with a gasket 13, the gasket 13 is respectively fixedly connected with the upper pressing rod 3 and the lower pressing rod 13, and contacts with the output end of the axial loading device 4, one ends of the upper pressing rod 31 and the lower pressing rod 32, which are close to the contact block 2, are provided with a backing ring 15, the backing ring 15 has a hollow annular structure, the test rod 10 passes through the hollow part of the backing ring 15, and meanwhile, does not contact with the backing ring 15, and the backing ring 15 is respectively fixedly connected with the upper pressing rod 31 and the lower pressing rod 32, and contacts with one side, which is far away from the spindle 1, of the numerical control machining center, of the contact block 2. By adopting the structure, the upper half part and the lower half part of the contact block 2 can be stressed simultaneously, the contact area between the force guide assembly 14 and the contact block 2 is increased by using the backing ring 15, so that the contact block 2 is stressed more uniformly, and the simulation of the axial loading of the numerical control machining center is more real.
Further, as shown in fig. 2 and 3, the spacer 13 is provided with a first groove 27 corresponding to the first groove at a position contacting with the output end of the axial loading device 4, and the contact block 2 is provided with a second groove 28 corresponding to the second groove at a position contacting with the output end of the radial loading device 9.
Further, as shown in fig. 4, the axial loading device 4 and the radial loading device 9 have the same structure, each of which comprises a servo motor 16, a guide rail 25 and a fixing plate 20 fixed on a fixing frame, and further comprises a lead screw 17 parallel to the guide rail 25, one end of the lead screw 17 is fixedly connected with the output end of the servo motor 16, the other end of the lead screw 17 is fixed on the fixing plate 20 through a bearing, a nut 18 matched with the lead screw 17 is screwed on the lead screw 17, the nut 18 extends downwards and is clamped with the guide rail 25, the nut 18 can only move along the axial direction of the lead screw, a connecting rod 19 is fixedly arranged on one side of the nut 18 close to the fixing plate 20, the connecting rod 19 extends towards the fixing plate 20 and penetrates through the fixing plate 20, the connecting rod 19 freely penetrates through the fixing plate 20 and is parallel to the lead screw 17, a guide rod 24 is fixedly arranged on one side of the push rod 23 close to the slide block, the guide rod 24 extends towards the slide block 21 and penetrates through the slide block 21, the guide rod 24 freely penetrates through the slide block 21 and is parallel to the lead screw 17, a spring 22 is sleeved on the guide rod 24, and the spring 22 is arranged between the guide rod 22 and the guide rod 21. Further, three guide rods 24 may be provided, and a baffle 26 is disposed on one side of the push rod 23 near the slider 21, and the guide rods 24 are fixed on the push rod 23 through the baffle 26. During loading, the servo motor 16 drives the screw rod 17 to rotate, and then the driving nut 18 pushes the sliding block 21 to move towards the direction close to the push rod 23 through the connecting rod 19, and the spring 22 is compressed in the moving process of the sliding block 21, so that force is transmitted to the push rod 23. The spring is adopted as a force transmission structure, so that the time for the output end to reach a preset loading capacity peak value can be prolonged, the loading test is easy to control, and meanwhile, when the axial and radial loading test is carried out on the numerical control machining center, the whole structure is in a flexible state, the system vibration caused by structural deformation due to overload of the numerical control machining center is avoided, and the stability of the device is improved.
Further, the torque loading device 6 is a dynamometer, so that the whole structure is simplified.
Further, the horizontal distance from the fixing part 7 to the contact point between the pressing rod 3 and the contact block 2 is shorter than the horizontal distance from the fixing part to the contact point between the pressing rod 3 and the output end of the axial loading device 4, namely, the power arm of the force guiding assembly is larger than the resistance arm, so that the axial loading device 4 can realize the axial loading test of the spindle 1 of the numerical control machining center by using smaller output power.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced with equivalents; such modifications and substitutions do not depart from the spirit of the corresponding technical solutions, which are defined by the scope of the appended claims.
Claims (8)
1. The quick test device for the reliability of the numerical control machining center comprises a main shaft (1) of the numerical control machining center, a test rod (10), a torque loading device (6), a radial loading device (9) and an axial loading device (4), and is characterized in that one end of the test rod (10) penetrates through a contact block (2) to be fixedly connected with the main shaft (1) of the numerical control machining center, the contact block (2) and the test rod (10) are axially fixed relatively, the test rod (10) is limited to be in a single-degree-of-freedom state in which the rotation direction can move, the other end of the test rod (10) is fixedly connected with the output end of the torque loading device (6), the lower end of the torque loading device (6) is provided with a fixing frame III (11), the radial loading device (9) is arranged on one side of the contact block (2), the output end of the radial loading device (9) is contacted with the side wall of the contact block (2), a fixing frame II (8) is arranged on the lower end of the radial loading device (9), the axial loading device (4) is arranged on the other side of the contact block (2), the lower end of the axial loading device (4) is provided with a fixing frame (5), a force guiding component (14) is arranged between the contact block (2) and the axial loading device (4), the axial loading device (4) can apply loading force along the axial direction of the spindle (1) of the numerical control machining center to the contact block (2) through the force guide assembly (14).
2. The rapid test device for reliability of a numerical control machining center according to claim 1, wherein the force guiding assembly (14) comprises a fixing portion (7) and a pressing rod (3), the fixing portion (7) extends upwards to be rotationally connected with the pressing rod (3), the pressing rod (3) can horizontally rotate around the fixing portion (7), one end of the pressing rod (3) is contacted with one side, far away from a main shaft (1) of the numerical control machining center, of the contact block (2), and the other end of the pressing rod is contacted with an output end of the axial loading device (4).
3. The rapid test device for reliability of a numerical control machining center according to claim 2, wherein the pressing rod (3) has an upper layer and a lower layer, the upper pressing rod (31) and the lower pressing rod (32) are provided with gaskets (13) at one ends close to the output ends of the axial loading device (4), the gaskets (13) are respectively fixedly connected with the upper pressing rod (31) and the lower pressing rod (32) and are in contact with the output ends of the axial loading device (4), the upper pressing rod (31) and the lower pressing rod (32) are provided with backing rings (15) at one ends close to the contact blocks (2), the backing rings (15) have hollow annular structures, the test rods (10) do not contact the backing rings (15) while penetrating through the hollow parts of the backing rings (15), and the backing rings (15) are respectively fixedly connected with the upper pressing rod (31) and the lower pressing rod (32) and are in contact with one side of the contact blocks (2) away from the spindle (1).
4. A rapid test device for reliability of a numerical control machining center according to claim 3, wherein the gasket (13) is provided with a first groove (27) corresponding to the gasket at a position contacting with the output end of the axial loading device (4), and the contact block (2) is provided with a second groove (28) corresponding to the gasket at a position contacting with the output end of the radial loading device (9).
5. The rapid test device for reliability of a numerical control machining center according to claim 2, wherein the horizontal distance from the fixing portion (7) to the contact point of the pressing rod (3) with the contact block (2) is shorter than the horizontal distance from the fixing portion to the contact point of the pressing rod (3) with the output end of the axial loading device (4).
6. The rapid test device for reliability of a numerical control machining center according to any one of claims 1 to 5, wherein the axial loading device (4) comprises a servo motor (16), a guide rail (25) and a fixing plate (20) fixed on a first fixing frame (5), and further comprises a lead screw (17) parallel to the guide rail (25), one end of the lead screw (17) is fixedly connected with the output end of the servo motor (16), the other end of the lead screw (17) is fixed on the fixing plate (20) through a bearing, a nut (18) matched with the lead screw is screwed on the lead screw (17), the nut (18) extends downwards and is clamped with the guide rail (25) so that the nut (18) can only move along the axial direction of the lead screw, a connecting rod (19) is fixedly arranged on one side close to the fixing plate (20), the connecting rod (19) extends towards the fixing plate (20) and penetrates through the fixing plate (20), one end of the connecting rod (19) freely penetrates through the fixing plate (20) and is parallel to the lead screw (17), a sliding block (21) is fixedly connected with the other end of the lead screw (17), and the connecting rod (19) is further fixedly connected with a pushing rod (23) close to one side of the pushing rod (23), the guide rod (24) extends towards the direction of the sliding block (21) and penetrates through the sliding block (21), the guide rod (24) freely penetrates through the sliding block (21) and is parallel to the lead screw (17), the guide rod (24) is sleeved with a spring (22), and the spring (22) is arranged between the push rod (23) and the sliding block (21);
the radial loading device (9) comprises a servo motor (16), a guide rail (25) and a fixed plate (20) which are fixed on a fixed frame II (8), and further comprises a lead screw (17) which is parallel to the guide rail (25), one end of the lead screw (17) is fixedly connected with the output end of the servo motor (16), the other end of the lead screw (17) is fixed on the fixed plate (20) through a bearing, a nut (18) which is matched with the lead screw (17) is screwed on the lead screw (17), the nut (18) downwards extends and is clamped with the guide rail (25) so that the nut (18) can only move along the axial direction of the lead screw, a connecting rod (19) is fixedly arranged on one side close to the fixed plate (20), the connecting rod (19) extends towards the fixed plate (20) and penetrates through the fixed plate (20), the connecting rod (19) freely penetrates through the fixed plate (20) and is simultaneously parallel to the lead screw (17), the other end of the lead screw (19) is fixedly connected with a sliding block (21), the sliding block (23) which is parallel to the lead screw (17), one side of the sliding block (23) is arranged on the sliding block (23) which is close to the sliding block (24) and extends towards the sliding block (21), the guide rod (24) freely passes through the sliding block (21) and is parallel to the lead screw (17), the guide rod (24) is sleeved with a spring (22), and the spring (22) is arranged between the push rod (23) and the sliding block (21).
7. The rapid test device for reliability of a numerical control machining center according to any one of claims 1 to 5, wherein the torque loading device (6) is a dynamometer.
8. The rapid test device for reliability of a numerical control machining center according to any one of claims 1 to 5, wherein one end of the test rod (10) is fixedly connected with the main shaft (1) of the numerical control machining center in a plugging manner, and the other end of the test rod is fixedly connected with the output end of the torque loading device (6) through a coupler (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202310507694.7A CN116223030A (en) | 2023-05-08 | 2023-05-08 | Quick test device of numerical control machining center reliability |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202310507694.7A CN116223030A (en) | 2023-05-08 | 2023-05-08 | Quick test device of numerical control machining center reliability |
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| CN103743567A (en) * | 2014-01-16 | 2014-04-23 | 北京工业大学 | Reliability test device for grinding wheel main shaft of numerical control grinding machine |
| CN203894048U (en) * | 2014-06-17 | 2014-10-22 | 吉林大学 | Contact mixed-loading reliability testing stand of electric main shaft |
| CN104019986A (en) * | 2014-06-24 | 2014-09-03 | 沈阳机床(集团)有限责任公司 | Reliability loading testing device and method for main shaft of numerically controlled lathe |
| CN204422189U (en) * | 2015-02-06 | 2015-06-24 | 吉林大学 | There is the electro spindle reliability test bench of fluid pressure type energy regenerating |
| CN105334057A (en) * | 2015-11-25 | 2016-02-17 | 吉林大学 | Reliability test device capable of online simulating dynamic and static cutting forces of motorized spindle |
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