CN212094447U - Bearing housing perforating machine - Google Patents
Bearing housing perforating machine Download PDFInfo
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- CN212094447U CN212094447U CN202020588217.XU CN202020588217U CN212094447U CN 212094447 U CN212094447 U CN 212094447U CN 202020588217 U CN202020588217 U CN 202020588217U CN 212094447 U CN212094447 U CN 212094447U
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Abstract
The utility model discloses a bearing overcoat puncher relates to bearing processing, aims at solving the artifical bearing inner race of holding and leads to the inaccurate problem of drilling position on the bearing inner race, and its technical scheme main points are: the lower fixedly connected with of workstation has a motor one of gear one, gear one transmission is connected with gear two, gear two transmission is connected with gear three, gear two keeps away from one end fixedly connected with dead lever one of gear three, the dead lever one is kept away from the one end of gear two and is articulated to have connecting rod one, the one end fixedly connected with supporting rod one of dead lever one is kept away from to connecting rod one, connecting rod one articulates with the junction of supporting rod one has connecting rod three, the one end that connecting rod one was kept away from to connecting rod three is articulated with the support, gear two, dead lever one, connecting rod one, supporting rod one and connecting rod three respectively with gear three, dead lever two, supporting rod two and four symmetric distributions of connecting rod set up. The utility model discloses a set up clamping structure and moving structure to improve the accuracy nature of drilling position.
Description
Technical Field
The utility model relates to a bearing processing, more specifically say, it relates to a bearing overcoat puncher.
Background
The bearing is an important part in the modern mechanical equipment. Its main function is to support the mechanical rotator, reduce the friction coefficient in its motion process and ensure its rotation precision. The bearings can be classified into rolling bearings and sliding bearings according to the frictional properties of the moving elements. Rolling bearings have been standardized and serialized, but have a larger radial size, vibration and noise, and a higher price than sliding bearings. The rolling bearing generally comprises four parts, namely an outer ring, an inner ring, a rolling body and a retainer, and strictly speaking comprises six parts, namely the outer ring, the inner ring, the rolling body, the retainer, a seal and lubricating oil. In short, the rolling bearing can be defined as a rolling bearing as long as the rolling bearing includes an outer ring, an inner ring, and rolling elements. Rolling bearings are classified into ball bearings and roller bearings according to the shape of the rolling elements. The inner ring and the outer ring of the bearing are important supporting parts, and when the outer ring of the bearing is processed, holes need to be punched on the outer ring of the bearing so as to be convenient for filling lubricating oil. When punching the bearing inner race, be artifical handheld bearing inner race usually, then start the puncher and once punch, once punch the completion back, rotate 180 degrees with the bearing inner race, then carry out the secondary on the bearing outer race and punch, because rotate 180 degrees with the bearing inner race and accomplish under artifical bare-handed, the inevitable error that exists leads to twice two hole lines that punch and the central non-intersect of bearing inner race.
Therefore, a new solution is needed to solve this problem.
SUMMERY OF THE UTILITY MODEL
Not enough to prior art exists, the utility model aims to provide a bearing overcoat puncher is used for the clamping structure of centre gripping bearing inner race and the removal structure that is used for adjusting the position of punching through the setting to make the centre gripping equipment carry out the effect of centre gripping to the bearing inner race, guaranteed the accuracy nature of the position of punching.
The above technical purpose of the present invention can be achieved by the following technical solutions: a bearing outer sleeve perforating machine comprises a workbench, wherein a first motor is fixedly connected below the workbench, an output shaft of the first motor penetrates through the back of the workbench and is fixedly connected with a first gear, a support is fixedly connected on the workbench and is positioned between the first gear and the top surface of the workbench, the first gear is in transmission connection with a second gear, the second gear is in transmission connection with a third gear, both the second gear and the third gear are hinged with the support, one end of the second gear, far away from the third gear, is fixedly connected with a first fixed rod, one end of the third gear, far away from the second gear, is fixedly connected with a second fixed rod, one end of the first fixed rod, far away from the second gear, is hinged with a first connecting rod, one end of the second fixed rod, far away from the third gear is hinged with a second connecting rod, one end of the first connecting rod, far away from the second fixed rod, one end, far away from the first connecting rod, of the third connecting rod is hinged to the support, the connecting part of the second connecting rod and the second clamping rod is hinged to a fourth connecting rod, and the second gear, the first fixing rod, the first connecting rod, the first clamping rod and the third connecting rod are symmetrically distributed with the third gear, the second fixing rod, the second clamping rod and the fourth connecting rod respectively.
By adopting the technical scheme, the first motor is arranged on the workbench, the first motor drives the first gear to rotate, the second gear drives the second gear to rotate while the second gear drives the second gear to rotate, the first connecting rod fixedly connected with the first clamping rod is hinged with the first fixing rod, the second connecting rod fixedly connected with the second clamping rod is hinged with the second fixing rod, the third connecting rod is hinged with the workbench and the first clamping rod respectively through the bracket, the fourth connecting rod is hinged with the workbench and the second clamping rod respectively through the bracket, so that the first fixing rod, the first connecting rod, the second connecting rod and the bracket form a four-bar structure, the second fixing rod, the second connecting rod, the fourth connecting rod and the bracket also form a four-bar structure, and the first fixing rod, the third connecting rod and the first connecting rod fixed with the first clamping rod are rotated by the second rotating gear, three pivoted gears make dead lever two, the connecting rod four and take place to rotate with two fixed connecting rods of supporting rod, make supporting rod one and supporting rod two inwards simultaneously or outwards do curvilinear motion simultaneously, when supporting rod one and supporting rod two simultaneously inwards move, distance between them reduces gradually, thereby carry out the centre gripping to two terminal surfaces of bearing inner race, reach and punch after carrying out the centre gripping to the bearing inner race, avoided the manual work to hold the bearing inner race and punch and the location problem that leads to, not only improve porous location accuracy greatly, still improved the security that the non-manual work was held and is brought at the in-process that punches.
The utility model discloses further set up to: the base is connected to the workbench in a sliding mode, the hydraulic cylinder is fixedly connected to the base, the connecting plate is fixedly connected to an output shaft of the hydraulic cylinder, the second motor is fixedly connected to the top face of the connecting plate, and a drill bit is fixedly connected to an output shaft of the second motor through the connecting plate.
Through adopting above-mentioned technical scheme, through set up the base with workstation sliding connection on the workstation to make the drill bit also can change the position according to the position of base on the workstation, conveniently punch the hole of same bearing inner race difference axial position demand on the one hand, on the other hand carries out position compensation to supporting rod one and supporting rod two of seat curvilinear motion, makes the punch can punch the bearing inner race of different thickness, has increased the flexibility of puncher.
The utility model discloses further set up to: fixedly connected with riser on the base, the vertical spout of having seted up on the riser, one side fixedly connected with slider that the connecting plate is close to the riser, slider and spout sliding connection, the slider is the dovetail with the cross section of spout.
Through adopting above-mentioned technical scheme, through setting up the vertically gliding connecting plate on the riser of base to make the drill bit reciprocate, conveniently feed and the process of moving back the sword, through set up slider and spout respectively on connecting plate and riser, thereby make the drill bit can not take place the skew of transverse position at the in-process that reciprocates, be the dovetail through the cross section of the spout that sets up and slider, thereby make connecting plate and riser can not break away from each other.
The utility model discloses further set up to: the workbench is fixedly connected with a first support and a second support which are symmetrically arranged, a first guide rod is fixedly connected between the first supports, a second guide rod is fixedly connected between the second supports, the first guide rod and the second guide rod are arranged in parallel, and the first guide rod and the second guide rod are fixedly connected with the base.
Through adopting above-mentioned technical scheme, through setting up support one and support two to the guide bar one and the guide bar two that are parallel to each other are fixed respectively to the convenience on support one and support two, and the base is all run through to guide bar one and guide bar, thereby makes things convenient for the base to carry out lateral shifting on the workstation.
The utility model discloses further set up to: a screw rod is arranged between the first guide rod and the second guide rod, external threads are formed in the peripheral wall of the screw rod, a threaded hole is formed in the base, the screw rod is in threaded connection with the base, and two ends of the screw rod are rotatably connected with a third support.
Through adopting above-mentioned technical scheme, through setting up support three at the workstation, the fixed lead screw that has the external screw thread between support three, because the lead screw runs through the screw hole on the base, thereby make the pivoted lead screw drive base take place to feed on the lead screw, because under the direction limiting displacement of guide bar one and guide bar two, make the base can only carry out lateral sliding on the lead screw, guide bar one and the guide bar two that set up the symmetric distribution setting are used for the direction on the one hand, on the other hand is used for increasing the stability of base and workstation.
The utility model discloses further set up to: and a third motor is fixedly connected to the workbench, and one end of the screw rod is fixedly connected with an output shaft of the third motor.
Through adopting above-mentioned technical scheme, through set up motor three and make motor three's output shaft and lead screw fixed connection on the workstation to can make the base slide on the workstation through three drive lead screw pivoted modes of motor, because the rotation phase angle of motor three can be controlled, thereby increased the accuracy of base slip path length on the lead screw, further improved the accuracy of puncher and punched.
The utility model discloses further set up to: one end of the first clamping rod, which is far away from the first connecting rod, is fixedly connected with a first abutting block, one end of the second clamping rod, which is far away from the second connecting rod, is fixedly connected with a second abutting block, and the first abutting block and the second abutting block are symmetrically distributed.
By adopting the technical scheme, the first pressing block and the second pressing block are arranged, so that the contact area between the first clamping rod and the second clamping rod and the end face of the bearing outer ring is increased, and the clamping effect is better.
The utility model discloses further set up to: and the first pressing block and the second pressing block are transversely provided with a plurality of tooth grooves distributed in a linear array, oblique teeth are formed between every two adjacent tooth grooves, and small ends of the oblique teeth are arranged downwards in an inclined mode.
Through adopting above-mentioned technical scheme, through set up the skewed tooth on briquetting one and the briquetting to increased the roughness on briquetting one and the two surfaces of briquetting, further improved the effect of centre gripping.
To sum up, the utility model discloses following beneficial effect has:
the first motor is arranged on the workbench, the first motor drives the first gear to rotate, the second gear is meshed with the third gear, the second gear drives the third gear to rotate while the second gear drives the second gear to rotate, the first connecting rod fixedly connected with the first clamping rod is hinged with the first fixing rod, the second connecting rod fixedly connected with the second clamping rod is hinged with the second fixing rod, the third connecting rod is hinged with the workbench and the first clamping rod respectively through a support, the fourth connecting rod is hinged with the workbench and the second clamping rod respectively through a support, so that the first fixing rod, the first connecting rod, the second connecting rod and the support form a four-bar structure, the second fixing rod, the second connecting rod, the fourth connecting rod and the support also form a four-bar structure, the first fixing rod, the third connecting rod and the first connecting rod fixed with the first clamping rod rotate due to the second gear, and the second fixing rod, the third connecting rod and the first, The connecting rod four and the connecting rod two fixed with the clamping rod two take place to rotate, make clamping rod one and clamping rod two inwards or outwards do curvilinear motion simultaneously, when clamping rod one and clamping rod two inwards move simultaneously, distance between them dwindles gradually, thereby carry out the centre gripping to two terminal surfaces of bearing inner race, reach and punch after carrying out the centre gripping to the bearing inner race, avoided the manual work to hold the bearing inner race and punch and the location problem that leads to, not only improve porous location accuracy greatly, still improved the security that non-manual holding brought at the in-process that punches.
Drawings
Fig. 1 is a first schematic structural diagram of the present invention;
FIG. 2 is a second schematic structural view of the present invention;
fig. 3 is an enlarged view of a portion a in fig. 2.
In the figure: 1. a work table; 2. a first motor; 3. a support; 4. a first gear; 5. a second gear; 6. a third gear; 7. fixing a rod I; 8. a second fixing rod; 9. a first connecting rod; 10. a second connecting rod; 11. a third connecting rod; 12. a connecting rod IV; 13. a first clamping rod; 14. a second clamping rod; 15. pressing a first pressing block; 16. pressing a block II; 17. a first support; 18. a first guide rod; 19. a second support; 20. a second guide rod; 21. a base; 22. a threaded hole; 23. a first through hole; 24. a second through hole; 25. a second motor; 26. a third support; 27. a connector; 28. a screw rod; 29. a hydraulic cylinder; 30. a third motor; 31. a connecting plate; 32. pressing the sleeve; 33. a fastener; 34. a drill bit; 35. a riser.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings and examples.
A bearing outer sleeve punching machine is shown in figures 1 to 3 and comprises a workbench 1, a motor I2 is fixedly connected below the workbench 1 through bolts, an output shaft of the motor I2 penetrates through the workbench 1 and then is connected with a gear I4 through hard connection, a support 3 is fixedly connected on the workbench 1 through bolts, the support 3 is positioned between the gear I4 and the upper top surface of the workbench 1, the gear I4 is in transmission connection with a gear II 5, the gear II 5 is in transmission connection with a gear III 6, the gear II 5 and the gear III 6 are both hinged with the support 3, one end of the gear II 5, which is far away from the gear III 6, is welded with a fixed rod I7, one end of the gear III 6, which is far away from the gear II 5, is welded with a fixed rod II 8, one end of the fixed rod I7, which is far away from the gear II 5, is hinged with a connecting rod I9, one end of the fixed rod II 8, which is far, a clamping rod II 14 is welded at one end of the connecting rod II 10 far away from the fixing rod II 8, a connecting rod III 11 is hinged at the joint of the connecting rod I9 and the clamping rod I13, one end of the connecting rod III 11 far away from the connecting rod I9 is hinged with the bracket 3, a connecting rod IV 12 is hinged at the joint of the connecting rod II 10 and the clamping rod II 14, a gear II 5, a fixing rod I7, a connecting rod I9, a clamping rod I13 and a connecting rod III 11 are symmetrically distributed with a gear III 6, a fixing rod II 8, a clamping rod II 14 and a connecting rod IV 12 respectively, a pressing block I15 is welded at one end of the clamping rod I13 far away from the connecting rod I9, a pressing block II 16 is welded at one end of the clamping rod II 14 far away from the connecting rod II 10, the pressing block I15 and the pressing block II 16 are symmetrically distributed, a plurality of linear array distributed tooth grooves are transversely formed on, the small end of the helical tooth is arranged downwards in an inclined mode.
The workbench 1 is welded with two first supports 17 and second supports 19 which are symmetrically arranged, a first guide rod 18 is fixedly connected between the two first supports 17 through screws, a second guide rod 20 is fixedly connected between the two second supports 19 through screws, the first guide rod 18 and the second guide rod 20 are arranged in parallel, a first through hole 23 and a second through hole 24 are transversely formed in the base 21, the first guide rod 18 and the second guide rod 20 respectively penetrate through the first through hole 23 and the second through hole 24 in the base 21, a screw rod 28 provided with external threads is arranged between the first guide rod 18 and the second guide rod 20, two ends of the screw rod 28 are rotatably connected with a third support 26 through bearings, one end of the screw rod 28 is fixed with an output shaft of a third motor 30, the other end of the screw rod 28 is rotatably connected with the bearings through a connector 27, the connector 27 is cylindrical, a threaded hole 22 is transversely formed in the base 21, and the threaded hole 22 is positioned between the, the screw 28 is screwed to the base 21.
Through bolt fixedly connected with pneumatic cylinder 29 on riser 35, the output shaft and the connecting plate 31 of pneumatic cylinder 29 are fixed, bolt fixedly connected with motor two 25 is passed through to the top surface of connecting plate 31, the output shaft of motor two 25 runs through and can dismantle behind the connecting plate 31 and be connected with drill bit 34, the stalk portion of drill bit 34 is located the annular form and supports the pressure cover 32, support the output shaft integrated into one piece of pressing cover 32 and motor two 25, the thickness direction threaded connection who supports pressure cover 32 has three fastener 33, three fastener 33 is around the axis annular array distribution who supports pressure cover 32, fastener 33 can be for fastening bolt. One side integrated into one piece that connecting plate 31 is close to riser 35 has the slider, fixedly connected with riser 35 on the base 21, the vertical spout of having seted up on riser 35, the slider is the dovetail with the cross section of spout, slider and spout sliding connection.
In the concrete implementation, when the bearing outer ring needs to be drilled, the bearing outer ring is firstly placed between a first pressing block 15 and a second pressing block 16, then the first motor 2 drives a first gear 4 to rotate, the second gear 5 is meshed with a third gear 6, so that the first gear 4 drives the second gear 5 to rotate, meanwhile, the second gear 5 also drives the third gear 6 to rotate, a first connecting rod 9 fixedly connected with a first clamping rod 13 is hinged with a first fixing rod 7, a second connecting rod 10 fixedly connected with a second clamping rod 14 is hinged with a second fixing rod 8, meanwhile, a third connecting rod 11 is hinged with a workbench 1 and the first clamping rod 13 through a support 3, and a fourth connecting rod 12 is hinged with the workbench 1 and the second clamping rod 14 through the support 3, so that the first fixing rod 7, the first connecting rod 9, the second connecting rod 10 and the support 3 form a four-link structure, and meanwhile, the second fixing rod 8, the third fixing rod and the third fixing rod are, The connecting rod two 10, the connecting rod four 12 and the support 3 also form a four-bar linkage structure, the pivoted gear two 5 makes dead lever one 7, connecting rod three 11 and the connecting rod one 9 fixed with the clamping rod one 13 take place to rotate, the pivoted gear three 6 makes dead lever two 8, connecting rod four 12 and the connecting rod two 10 fixed with the clamping rod two 14 take place to rotate, make clamping rod one 13 and clamping rod two 14 inwards or outwards do curvilinear motion simultaneously, when clamping rod one 13 and clamping rod two 14 inwards move simultaneously, make the distance between one pressing block 15 and the pressing block two 16 reduce gradually, thereby carry out the centre gripping to two terminal surfaces of bearing inner race.
When the bearing outer ring is clamped, the screw rod 28 is rotated through the driving motor III 30, the base 21 which is in threaded connection with the screw 28 moves transversely under the action of the first guide rod 18 and the second guide rod 20 until the lower end part of the drill bit 34 on the base 21 is aligned with the punching position of the bearing outer ring, then the second motor 25 is driven, the second motor 25 rotates the drill bit 34, at this time, the hydraulic cylinder 29 is driven, the output shaft of the hydraulic cylinder 29 pushes the connecting plate 31 to move downwards under the guidance of the dovetail-shaped sliding block and the sliding chute, so that the rotary drill 34 can punch the outer peripheral wall of the bearing outer ring, the hydraulic cylinder 29 drives the connecting plate 31 to move upwards after punching is completed, and if the bearing outer ring with the same specification needs to be punched, the bearing outer ring is clamped by the first pressing block 15 and the second pressing block 16 only through the first driving motor 2, and the position of the adjusted drill bit 34 is not required to be adjusted.
When the same bearing outer ring needs to be punched, due to the fact that the thickness of the same bearing outer ring is consistent, punching positions of the clamped bearing outer ring in different circumferential directions are also located right below the drill bit 34. The utility model discloses a setting is used for the clamping structure of centre gripping bearing inner race and is used for adjusting the removal structure of punching the position to make centre gripping equipment carry out the effect of centre gripping to the bearing inner race, guaranteed the accuracy nature of punching the position.
It is above only the utility model discloses a preferred embodiment, the utility model discloses a scope of protection does not only confine above-mentioned embodiment, the all belongs to the utility model discloses a technical scheme under the thinking all belongs to the utility model discloses a scope of protection. It should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (8)
1. The utility model provides a bearing overcoat puncher, includes workstation (1), its characterized in that: a first motor (2) is fixedly connected below the workbench (1), an output shaft of the first motor (2) penetrates through the workbench (1) and then is fixedly connected with a first gear (4), a support (3) is fixedly connected on the workbench (1), the support (3) is positioned between the first gear (4) and the top surface of the workbench (1), the first gear (4) is in transmission connection with a second gear (5), the second gear (5) is in transmission connection with a third gear (6), the second gear (5) and the third gear (6) are both hinged to the support (3), one end, away from the third gear (6), of the second gear (5) is fixedly connected with a first fixing rod (7), one end, away from the second gear (5), of the third gear (6) is fixedly connected with a second fixing rod (8), one end, away from the second gear (5), of the first fixing rod (7) is hinged to a first connecting rod (9), one end of the second fixed rod (8) far away from the third gear (6) is hinged with a second connecting rod (10), one end of the connecting rod I (9) far away from the fixing rod I (7) is fixedly connected with a clamping rod I (13), one end of the second connecting rod (10) far away from the second fixing rod (8) is fixedly connected with a second clamping rod (14), a connecting rod III (11) is hinged at the joint of the connecting rod I (9) and the clamping rod I (13), one end of the connecting rod III (11) far away from the connecting rod I (9) is hinged with the bracket (3), a connecting rod IV (12) is hinged at the joint of the connecting rod II (10) and the clamping rod II (14), the gear II (5), the fixing rod I (7), the connecting rod I (9), the clamping rod I (13) and the connecting rod III (11) are symmetrically distributed with the gear III (6), the fixing rod II (8), the clamping rod II (14) and the connecting rod IV (12) respectively.
2. The bearing housing punch of claim 1, wherein: sliding connection has base (21) on workstation (1), fixedly connected with pneumatic cylinder (29) on base (21), fixedly connected with connecting plate (31) on the output shaft of pneumatic cylinder (29), the top surface fixedly connected with motor two (25) of connecting plate (31), the output shaft of motor two (25) runs through connecting plate (31) fixedly connected with drill bit (34).
3. The bearing housing punch of claim 2, wherein: fixedly connected with riser (35) on base (21), the vertical spout of having seted up on riser (35), one side fixedly connected with slider that connecting plate (31) are close to riser (35), slider and spout sliding connection, the slider is the dovetail with the cross section of spout.
4. The bearing housing punch of claim 2, wherein: the utility model discloses a worktable for a motor vehicle, including workstation (1), two fixedly connected with two symmetrical arrangement's support (17) and support two (19), two fixedly connected with guide bar (18) between support (17), two fixedly connected with guide bar two (20) between support two (19), guide bar (18) and guide bar two (20) parallel arrangement, guide bar (18) and guide bar two (20) all with base (21) fixed connection.
5. The bearing housing punch of claim 4, wherein: be equipped with lead screw (28) between guide bar (18) and guide bar two (20), the external screw thread has been seted up on the periphery wall of lead screw (28), set up threaded hole (22) on base (21), lead screw (28) and base (21) threaded connection, the both ends of lead screw (28) are all rotated and are connected with support three (26).
6. The bearing housing punch of claim 5, wherein: and a third motor (30) is fixedly connected to the workbench (1), and one end of the screw rod (28) is fixedly connected with an output shaft of the third motor (30).
7. The bearing housing punch of claim 1, wherein: one end, far away from the first connecting rod (9), of the first clamping rod (13) is fixedly connected with a first pressing block (15), one end, far away from the second connecting rod (10), of the second clamping rod (14) is fixedly connected with a second pressing block (16), and the first pressing block (15) and the second pressing block (16) are symmetrically distributed.
8. The bearing housing punch of claim 7, wherein: the pressing block I (15) and the pressing block II (16) are transversely provided with a plurality of tooth grooves distributed in a linear array mode, oblique teeth are formed between every two adjacent tooth grooves, and small ends of the oblique teeth are arranged downwards in an inclined mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020588217.XU CN212094447U (en) | 2020-04-18 | 2020-04-18 | Bearing housing perforating machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020588217.XU CN212094447U (en) | 2020-04-18 | 2020-04-18 | Bearing housing perforating machine |
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| Publication Number | Publication Date |
|---|---|
| CN212094447U true CN212094447U (en) | 2020-12-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020588217.XU Active CN212094447U (en) | 2020-04-18 | 2020-04-18 | Bearing housing perforating machine |
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| CN (1) | CN212094447U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115502793A (en) * | 2022-06-01 | 2022-12-23 | 张家港市哈德五金工具有限公司 | Pneumatic scissors grinding device |
-
2020
- 2020-04-18 CN CN202020588217.XU patent/CN212094447U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115502793A (en) * | 2022-06-01 | 2022-12-23 | 张家港市哈德五金工具有限公司 | Pneumatic scissors grinding device |
| CN115502793B (en) * | 2022-06-01 | 2024-01-09 | 张家港市哈德五金工具有限公司 | Pneumatic scissors grinding device |
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