Double-top clamping external cylindrical fine grinding device for motor shaft and fine grinding method thereof

Abstract

The present invention relates to the field of motor shaft fine grinding, and specifically to a double-top clamping external cylindrical fine grinding device for a motor shaft and a fine grinding method thereof, comprising a fine grinding mechanism, which is used for performing external cylindrical fine grinding on the motor shaft; a clamping mechanism, which is used for clamping and limiting the two ends of the motor shaft; the fine grinding mechanism is fixedly installed on the outside of the clamping mechanism; wherein the fine grinding mechanism comprises an external connecting rail, the top sliding adapter of the external connecting rail is equipped with a support plate, the internal rotation of the support plate is connected with a rotating roller, wherein the rotating roller is driven by external electric power, and the outer side of the support plate is respectively plugged with an insertion rod and an electric telescopic rod, the double-top clamping external cylindrical fine grinding device for the motor shaft and the fine grinding method thereof, wherein the No. 2 grinding disc is connected to the No. 1 grinding disc by an elastic rod and a reset spring, and the latter two play a role in resetting the No. 2 grinding disc, thereby achieving the purpose of pre-clamping and initial preparation for grinding of the workpiece.

Description

Technical Field

[0001] The invention relates to the technical field of motor shaft fine grinding, in particular to a double-top clamping outer circle fine grinding device for a motor shaft and a fine grinding method thereof. Background Art

[0002] External cylindrical grinding is mainly carried out on external cylindrical grinding machines to grind the outer cylinder, outer cone and shoulder end face of shaft workpieces. During grinding, the workpiece rotates at a low speed. If the workpiece simultaneously makes longitudinal reciprocating movements and the grinding wheel makes a lateral feed relative to the workpiece after each single or double stroke of the longitudinal movement, it is called longitudinal grinding.

[0003] There are several problems with the existing motor shaft external cylindrical fine grinding device: 1. The existing double-top clamping uses two centers to clamp the two ends of the motor shaft and drive the motor shaft to rotate, but this type of center is difficult to adapt to each motor shaft, so there will be problems such as the center slipping or offset; 2. The existing external cylindrical fine grinding also requires the replacement of the grinding disc, and the motor shaft can only be ground with a single fine grinding disc, resulting in a significant decrease in processing efficiency. Summary of the invention

[0004] The present invention provides a double-top clamping outer cylindrical fine grinding device for a motor shaft and a fine grinding method thereof to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned object, the present invention provides the following technical solutions: a double-top clamping outer cylindrical fine grinding device for a motor shaft, comprising a fine grinding mechanism, the fine grinding mechanism is used to perform outer cylindrical fine grinding on the motor shaft;

[0006] A clamping mechanism, which is used to clamp and limit the two ends of the motor shaft;

[0007] The fine grinding mechanism is fixedly mounted on the outside of the clamping mechanism;

[0008] The fine grinding mechanism includes an outer connecting rail, the top of the outer connecting rail is slidably adapted to be equipped with a support plate, the inside of the support plate is rotatably connected to a rotating roller, wherein the rotating roller is driven by external electricity, and the outer side of the support plate is respectively plugged with an interlaced rod and an electric telescopic rod, the outer end of the interlaced rod is fixedly connected to a rod ring, and the end of the interlaced rod away from the rod ring is fixedly connected to a three-side plate, and the three-side plate is nested on the inner side of the rotating roller;

[0009] The interior of the rotating roller is rotatably connected with a driving shaft, and the outer side of the driving shaft is extruded and adapted with a fine grinding disc.

[0010] Preferably, a No. 1 adapter sleeve and a No. 2 adapter sleeve are symmetrically arranged on both sides of the fine grinding disc, and the No. 1 adapter sleeve and the No. 2 adapter sleeve are both extruded and fitted on the outside of the driving shaft. A circular embedding groove and an arc-shaped embedding groove are respectively opened on the outside of the No. 2 adapter sleeve, wherein the inner wall of the circular embedding groove is extruded and fitted with the telescopic end of the electric telescopic rod, and the inner wall of the arc-shaped embedding groove is extruded and fitted with the outer end surface of the three-side plate.

[0011] Preferably, the clamping mechanism includes an end grinding assembly, a processing part is arranged inside the end grinding assembly, a collecting assembly is arranged directly below the processing part, a double top assembly is arranged at one end of the end grinding assembly away from the processing part, and a driving assembly is arranged below the double top assembly.

[0012] Preferably, the end grinding assembly includes a side rail, the outer side of the side rail is fixedly connected to the outer connecting rail, the inner sliding adapter of the side rail is equipped with a slide, the top of the slide is fixedly connected to an inner curved sleeve, the outer end of the inner curved sleeve is fixedly connected to a vertical rail, the top of the vertical rail is fixedly installed with a motor, the bottom of the motor is connected to a No. 1 screw via a coupling, and the No. 1 screw is rotatably connected to the inside of the vertical rail.

[0013] Preferably, the outer side of the No. 1 screw rod is threadedly connected to a sliding plate, the bottom of the sliding plate is fixedly connected to the No. 1 grinding plate, both ends of the No. 1 grinding plate are symmetrically connected to insert ring rods, and the end of the insert ring rod away from the No. 1 grinding plate is sleeved with a ring rod.

[0014] Preferably, the outer end of the No. 1 grinding disc is fixedly connected with an elastic rod and a return spring respectively, and the ends of the elastic rod and the return spring away from the No. 1 grinding disc are fixedly connected with the No. 2 grinding disc, and the top of the No. 2 grinding disc is extruded and adapted with a bottom curved block, and the top of the bottom curved block is fixedly connected with a moving rod, and the moving rod is inserted into the bottom of the sliding disc and extends to the top thereof, and the top end of the moving rod is fixedly connected with a top plate.

[0015] Preferably, the double top assembly includes a top, the top is inserted into the interior of the inner curved sleeve, the end of the top away from the inner curved sleeve is rotatably connected to the inner plate, the internal sliding adapter of the top is equipped with a compensating head, the outer side of the compensating head is fixedly connected to a spring, the end of the spring away from the compensating head is fixedly connected to the inner side of the top, the end of the compensating head away from the inner curved sleeve is fixedly connected to a pressure block, the top of the pressure block is extruded and adapted with an inclined panel, the inclined panel is inserted in the top of the top, the outer side of the inclined panel is fixedly connected to a driving telescopic rod, and the driving telescopic rod is fixedly connected to the outer side of the top.

[0016] Preferably, the driving assembly includes a sliding rod, which is fixedly connected to the outer end face of the side rail, the outer side of the sliding rod is slidably adapted to the inner connecting plate, the inner side of the inner connecting plate is fixedly installed with an inner connecting rod, the inner connecting rod is inserted into the surface of the slide, the end of the sliding rod away from the side rail is fixedly connected to a No. 1 support, the internal extrusion adaptation of the outer end face of the side rail is equipped with a bearing, the internal extrusion adaptation of the bearing is equipped with a No. 2 screw rod, the outer side of the No. 2 screw rod is threadedly connected to the inner connecting plate, the outer side of the No. 2 screw rod is rotatably installed with a No. 2 support, the end of the No. 2 screw rod away from the bearing is connected to a small motor through a coupling, and the small motor is fixedly installed on the outer side of the No. 2 support.

[0017] Preferably, the collecting assembly comprises a lap rod, the outer end of the lap rod is fixedly connected to the inner end of the side rail, the top of the lap rod is fixedly connected to a collecting frame, the inner side of the collecting frame is fixedly connected to a first magnet, the top of the collecting frame is fixedly connected to a cross rail, the top of the cross rail is slidingly adapted to be equipped with a cover plate, the top of the cover plate is fixedly connected to a pressure plate, and the center part of the bottom of the cover plate is fixedly connected to a second magnet.

[0018] A method for fine grinding of a double-top clamped outer circle of a motor shaft comprises the following steps:

[0019] Step 1: Pre-clamping treatment, the bottom block moving downward will squeeze the No. 2 grinding disc outward, causing the No. 2 grinding disc to move toward the center of the workpiece, and then the workpiece will be pre-clamped and prepared for grinding;

[0020] Step 2: Limit clamping, insert the inclined plate from the top of the top head into its interior, then the bottom of the inclined plate will squeeze the pressure block, and the compensation head connected to the other side of the pressure block will extend from the inside of the top head and compress the spring until its extended end squeezes and limits the end face of the workpiece;

[0021] Step 3: Waste chip collection, the pressure plate is impacted, and the bottom of the pressure plate is connected to the cover plate, so the cover plate will move outward along the horizontal rail, and the top of the collection frame will be exposed, so that the subsequent grinding chips can be collected and processed;

[0022] Step 4: Fine grinding. Move the support plate along the external rail toward the workpiece. Then one of the fine grinding discs will stick to the surface of the workpiece and the head will rotate through external electricity. Then the fine grinding disc will grind the workpiece.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] 1. The No. 2 grinding disc is connected to the No. 1 grinding disc by an elastic rod and a reset spring, and the latter two play the role of resetting the No. 2 grinding disc, thereby achieving the purpose of pre-clamping and initial preparation for grinding the workpiece. At the same time, the movement of the No. 2 grinding disc also plays the role of adjusting the position of the part to be polished.

[0025] 2. The compensating head can be used to compensate for the insufficient extrusion distance between the top head and the workpiece. In addition, the end grinding assembly and the double top assembly can clamp and grind workpieces of different coarseness and fineness.

[0026] 3. The bottom of the cover plate is fixedly connected with a No. 2 magnet, and the inside of the collection frame is fixedly connected with a No. 1 magnet. The two magnets maintain a repulsive relationship and play a role in resetting the cover plate, thereby facilitating the collection and processing of subsequent grinding debris.

[0027] 4. By starting the electric telescopic rod of each fine grinding disc, the position of each fine grinding disc will change, so as to adjust the different grinding positions required for the workpiece. At the same time, the interlaced rod can be pushed to move the three fine grinding discs synchronously. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 The present invention is a schematic diagram of the external structure of a double-top clamping external cylindrical fine grinding device for a motor shaft.

[0029] Figure 2 It is a schematic structural diagram of the fine grinding mechanism of the present invention.

[0030] Figure 3 It is a schematic cross-sectional structural diagram of the fine grinding mechanism of the present invention.

[0031] Figure 4 It is an enlarged cross-sectional structural schematic diagram of some components of the fine grinding mechanism of the present invention.

[0032] Figure 5 It is a structural schematic diagram of the clamping mechanism of the present invention.

[0033] Figure 6 It is a schematic structural diagram of the end grinding assembly of the present invention.

[0034] Figure 7 It is a schematic cross-sectional structural diagram of the end grinding assembly of the present invention.

[0035] Figure 8 For the present invention Figure 7 Schematic diagram of the enlarged structure at point A in the middle.

[0036] Fig. 9 For the present invention Figure 7 Schematic diagram of the enlarged structure at point B in the middle.

[0037] Fig.10 It is a schematic cross-sectional structural diagram of the double top assembly of the present invention.

[0038] Fig.11 For the present invention Fig.10 Schematic diagram of the enlarged structure at point C in the middle.

[0039] Fig.12 It is a schematic diagram of the structure of the driving assembly of the present invention.

[0040] Fig.13 For the present invention Fig.12 Schematic diagram of the enlarged structure at D in the middle.

[0041] Fig.14 It is a schematic cross-sectional structural diagram of the collecting assembly of the present invention.

[0042] In the figure: 1. fine grinding mechanism; 2. clamping mechanism; 11. outer connecting rail; 12. support plate; 13. rotating roller; 14. interlaced rod; 15. electric telescopic rod; 16. rod ring; 17. three-side plate; 18. driving shaft; 19. fine grinding disc; 10. No. 1 adapter sleeve; 101. No. 2 adapter sleeve; 102. circular embedded groove; 103. arc embedded groove; 21. end grinding assembly; 22. workpiece; 23. double top assembly; 24. driving assembly; 25. collecting assembly; 211. side rail; 212. slide; 213. inner curved sleeve; 214. vertical rail; 215. motor; 216. No. 1 screw rod; 217. slide plate; 218. No. 1 grinding disc; 219. insert ring rod; 210. Ring rod; 2101, elastic rod; 2102, return spring; 2103, grinding disc No. 2; 2104, bottom curved block; 2105, moving rod; 2106, top plate; 231, top head; 232, compensation head; 233, spring; 234, pressure block; 235, inclined plate; 236, driving telescopic rod; 237, inner plate; 241, sliding rod; 242, support No. 1; 243, screw rod No. 2; 244, support No. 2; 245, small motor; 246, bearing; 247, inner connecting rod; 251, overlapping rod; 252, collecting frame; 253, magnet No. 1; 254, magnet No. 2; 255, cover plate; 256, cross rail; 257, pressure plate. DETAILED DESCRIPTION

[0043] The present invention is further described below in conjunction with the accompanying drawings and specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form a new embodiment. It should be noted that the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0044] See also Figures 1 to 14 The present invention provides a technical solution: Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, it includes a fine grinding mechanism 1, which is used to perform external cylindrical fine grinding on the motor shaft;

[0045] A clamping mechanism 2, which is used to clamp and limit the two ends of the motor shaft;

[0046] The fine grinding mechanism 1 is fixedly mounted on the outside of the clamping mechanism 2 .

[0047] The fine grinding mechanism 1 includes an outer connecting rail 11, the top of the outer connecting rail 11 is slidably adapted with a support plate 12, the inside of the support plate 12 is rotatably connected to a rotating roller 13, wherein the rotating roller 13 is driven by external electricity, and the outside of the support plate 12 is respectively plugged with an insertion rod 14 and an electric telescopic rod 15, the outer end of the insertion rod 14 is fixedly connected to a rod ring 16, and the end of the insertion rod 14 away from the rod ring 16 is fixedly connected to a three-side plate 17, and the three-side plate 17 is nested on the inside of the rotating roller 13, and the inside of the rotating roller 13 is rotatably connected to a driving shaft 18, and the outer side of the driving shaft 18 is extruded and adapted with a fine grinding disc 19, and a No. 1 adapter sleeve 10 and a No. 2 adapter sleeve 101 are symmetrically arranged on both sides of the fine grinding disc 19, respectively. The adapter sleeve 10 and the second adapter sleeve 101 are both extruded and fitted on the outside of the drive shaft 18. The outside of the second adapter sleeve 101 is respectively provided with a circular embedding groove 102 and an arc-shaped embedding groove 103, wherein the inner wall of the circular embedding groove 102 is extruded and fitted with the telescopic end of the electric telescopic rod 15, and the inner wall of the arc-shaped embedding groove 103 is extruded and fitted with the outer end surface of the three-side plate 17. By moving the support plate 12 along the external connecting rail 11 toward the workpiece 22, one of the fine grinding discs 19 will be attached to the surface of the workpiece 22, and the top head 231 will be driven to rotate by external electric power. At this time, the top head 231 will drive the workpiece 22 to rotate, and the fine grinding disc 19 will grind the workpiece 22. There are three fine grinding discs 19, so the rotating roller 13 can be rotated to select the required fine grinding disc 19. At the same time, the angle of the rotating roller 13 can be rotated to a position where one fine grinding disc 19 is above the workpiece 22 and the other fine grinding disc 19 is below the workpiece. At the same time, the electric telescopic rod 15 corresponding to each fine grinding disc 19 is started, and the position of each fine grinding disc 19 will change, thereby adjusting the different grinding positions required for the workpiece 22. At the same time, the insertion rod 14 can be pushed to move the three fine grinding discs 19 synchronously.

[0048] like Figure 5 , Figure 6 , Figure 7 , Figure 8, Fig. 9 , Fig.10 and Fig.11 As shown, the clamping mechanism 2 includes an end grinding assembly 21, a processing piece 22 is arranged inside the end grinding assembly 21, a collecting assembly 25 is arranged directly below the processing piece 22, a double top assembly 23 is arranged at one end of the end grinding assembly 21 away from the processing piece 22, and a driving assembly 24 is arranged below the double top assembly 23. By moving the two groups of end grinding assemblies 21 outward, and then placing the processing piece 22 between the two, and then resetting the end grinding assembly 21, the processing piece 22 will be initially limited and clamped by the end grinding assembly 21, wherein the processing piece 22 refers to the motor shaft.

[0049] The end grinding assembly 21 includes a side rail 211, the outer side of the side rail 211 is fixedly connected to the outer connecting rail 11, the inner side rail 211 is slidably adapted with a slide 212, the top of the slide 212 is fixedly connected to an inner curved sleeve 213, the outer end of the inner curved sleeve 213 is fixedly connected to a vertical rail 214, the top of the vertical rail 214 is fixedly installed with a motor 215, the bottom of the motor 215 is connected to a No. 1 screw rod 216 through a coupling, the No. 1 screw rod 216 is rotatably connected to the inside of the vertical rail 214, the outer side of the No. 1 screw rod 216 is threadedly connected to a sliding plate 217, the bottom of the sliding plate 217 is fixedly connected to a No. 1 grinding plate 218, and both ends of the No. 1 grinding plate 218 are aligned with the The plug-in ring rod 219 is connected to the plug-in ring rod 219, and the end of the plug-in ring rod 219 away from the first grinding disc 218 is sleeved with the sleeve ring rod 210, the outer end of the first grinding disc 218 is respectively fixedly connected with the elastic rod 2101 and the return spring 2102, and the ends of the elastic rod 2101 and the return spring 2102 away from the first grinding disc 218 are fixedly connected with the second grinding disc 2103, the top of the second grinding disc 2103 is extruded and adapted with a bottom curved block 2104, the top of the bottom curved block 2104 is fixedly connected with a moving rod 2105, the moving rod 2105 is inserted at the bottom of the sliding disc 217 and extends to the top thereof, and the top of the moving rod 2105 is fixedly connected with a top plate 2106 , where the two ends of the workpiece 22 are stuck on the inner side of the inner curved sleeve 213, and then the motor 215 is started, so that the No. 1 screw rod 216 connected to its output end through the coupling will rotate forward, and the sliding plate 217 threadedly connected to the outer side of the No. 1 screw rod 216 will move downward, and then the No. 1 grinding plate 218 fixedly connected to the bottom of the sliding plate 217 will move downward and stick to the surface of the workpiece 22 near the two ends. At the same time, the top plate 2106 can be manually pressed downward, so that the moving rod 2105 connected to the bottom of it will pass through the sliding plate 217 and move downward with the bottom curved block 2104, and then move downward. The bottom curved block 2104 will squeeze the No. 2 grinding disc 2103 outward, wherein the contact surfaces between the bottom curved block 2104 and the No. 2 grinding disc 2103 are curved surfaces, causing the No. 2 grinding disc 2103 to move toward the center of the workpiece 22, wherein the No. 2 grinding disc 2103 and the No. 1 grinding disc 218 are connected via an elastic rod 2101 and a reset spring 2102, and the latter two play a role in resetting the No. 2 grinding disc 2103, thereby achieving the purpose of pre-clamping and initial preparation for grinding the workpiece 22, and at the same time, the movement of the No. 2 grinding disc 2103 also plays a role in adjusting the position of the part to be polished.

[0050] The double top assembly 23 includes a top head 231, which is inserted into the interior of the inner curved sleeve 213. The end of the top head 231 away from the inner curved sleeve 213 is rotatably connected to an inner connecting plate 237. The interior of the top head 231 is slidably adapted to be equipped with a compensating head 232. The outer side of the compensating head 232 is fixedly connected to a spring 233. The end of the spring 233 away from the compensating head 232 is fixedly connected to the inner side of the top head 231. The end of the compensating head 232 away from the inner curved sleeve 213 is fixedly connected to a pressure block 234. The top of the pressure block 234 is extrusion-adapted with an inclined plate 235. The inclined plate 235 is inserted into the top of the top head 231. The outer side of the inclined plate 235 is fixedly connected to a driving telescopic rod 236. The driving telescopic rod 236 is fixedly connected to the outer side of the top head 231. By starting the small motor 245, the No. 2 screw rod 243 connected to its output end through a coupling will rotate forward, and the inner connecting plate threadedly connected to the outer side of the No. 2 screw rod 243 The compensating head 232 connected to the other side of the pressure block 234 will extend from the inside of the top head 231 and compress the spring 233 until its extended end extrude and limit the end face of the workpiece 22. As the name implies, the compensating head 232 serves to compensate for the insufficient extrusion distance between the top head 231 and the workpiece 22. In addition, the end grinding assembly 21 and the double top assembly 23 can clamp and grind workpieces 22 of different coarsenesses.

[0051] like Fig.12 , Fig.13 and Fig.14 As shown, the drive assembly 24 includes a slide rod 241, which is fixedly connected to the outer end surface of the side rail 211, the outer side of the slide rod 241 is slidably adapted to the inner plate 237, the inner side of the inner plate 237 is fixedly installed with an inner connecting rod 247, the inner connecting rod 247 is inserted into the surface of the slide 212, and the end of the slide rod 241 away from the side rail 211 is fixedly connected to the first support 242, the internal extrusion adaptation of the outer end surface of the side rail 211 is equipped with a bearing 246, the internal extrusion adaptation of the bearing 246 is equipped with a second screw rod 243, the outer side of the second screw rod 243 is threadedly connected to the inner plate 237, the outer side of the second screw rod 243 is rotatably installed with a second support 244, the end of the second screw rod 243 away from the bearing 246 is connected to a small motor 245 through a coupling, and the small motor 245 is fixedly installed on the outer side of the second support 244.

[0052] The collecting assembly 25 comprises a lap rod 251, the outer end of the lap rod 251 is fixedly connected to the inner end of the side rail 211, the top of the lap rod 251 is fixedly connected to a collecting frame 252, the inner side of the collecting frame 252 is fixedly connected to a No. 1 magnet 253, the top of the collecting frame 252 is fixedly connected to a cross rail 256, the top of the cross rail 256 is slidably adapted to be equipped with a cover plate 255, the top of the cover plate 255 is fixedly connected to a pressure plate 257, the center of the bottom of the cover plate 255 is fixedly connected to a No. 2 magnet 254, and in addition, as the inner plate 237 moves along the No. 2 screw rod 243 toward the side rail 211, the fixed connection The inner connecting rod 247 on the inner side of the inner connecting plate 237 will pass through the slide 212 and hit the pressure plate 257, wherein the bottom of the pressure plate 257 is connected to the cover plate 255, so the cover plate 255 will move outward along the cross rail 256, and the top of the collecting frame 252 will be exposed, wherein the bottom of the cover plate 255 is fixedly connected with the second magnet 254, and the inside of the collecting frame 252 is fixedly connected with the first magnet 253, and the two magnets maintain a repulsive relationship and play a role in resetting the cover plate 255, thereby facilitating the collection and processing of subsequent grinding debris.

[0053] When the present invention is used, first, the two groups of end grinding assemblies 21 are moved outward, and then the workpiece 22 is placed between the two groups, and then the end grinding assemblies 21 are reset, and then the workpiece 22 is initially limited and clamped by the end grinding assemblies 21. The two ends of the workpiece 22 are stuck on the inner side of the inner curved sleeve 213, and then the motor 215 is started, so that the No. 1 screw rod 216 connected to its output end through the coupling will rotate forward, and the sliding plate 217 threadedly connected to the outer side of the No. 1 screw rod 216 will move downward, and then the No. 1 grinding plate 218 fixedly connected to the bottom of the sliding plate 217 will move downward and stick to the surface of the workpiece 22 near the two ends. At the same time, the top plate 2106 can be pressed downward manually, so that the moving rod 2105 connected to the bottom of it will pass through the sliding plate 217 and move downward with the bottom curved block 2104, and then the bottom curved block 2104 moving downward will squeeze the No. 2 grinding plate 2103 outward, causing the No. 2 grinding plate 2103 to move toward the center of the workpiece 22, thereby achieving the purpose of pre-clamping and initial preparation for grinding.

[0054] By starting the small motor 245, the No. 2 screw rod 243 connected to its output end through the coupling will rotate forward, and the inner plate 237 threadedly connected to the outer side of the No. 2 screw rod 243 will move toward the side rail 211 until the top head 231 rotatably connected to the inner side of the inner plate 237 will extend into the interior of the inner curved sleeve 213, and then the driving telescopic rod 236 will be turned on to make the inclined plate 235 connected to the top end thereof be inserted into the interior from the top of the top head 231, at this time, the bottom of the inclined plate 235 will squeeze the pressure block 234, and the compensating head 232 connected to the other side of the pressure block 234 will extend from the inside of the top head 231 and compress the spring 233 until its extended end performs a compression and limiting treatment on the end face of the workpiece 22. In addition, as the inner connecting plate 237 moves along the second screw rod 243 toward the side rail 211, the inner connecting rod 247 fixedly connected to the inner side of the inner connecting plate 237 will pass through the slide 212 and hit the pressure plate 257, wherein the bottom of the pressure plate 257 is connected to the cover plate 255, so the cover plate 255 will move outward along the cross rail 256, and the top of the collection frame 252 will be exposed, so that the subsequent grinding debris can be collected and processed.

[0055] By moving the support plate 12 along the external connecting rail 11 toward the workpiece 22, one of the fine grinding discs 19 will be attached to the surface of the workpiece 22, and the head 231 will be driven to rotate by external electric power, and the fine grinding disc 19 will grind the workpiece 22.

[0056] The above-mentioned embodiments are only preferred embodiments of the present invention, and cannot be used to limit the scope of protection of the present invention. Various changes made by ordinary technicians in this field based on the above-mentioned concepts without creative work all fall within the scope of protection of the present invention.

Claims

1. A double-top clamping external cylindrical fine grinding device for a motor shaft, characterized in that: include: A fine grinding mechanism (1), the fine grinding mechanism (1) being used for performing an external fine grinding process on a motor shaft; A clamping mechanism (2), the clamping mechanism (2) being used to clamp and limit the two ends of a workpiece (22); The fine grinding mechanism (1) is fixedly mounted on the outside of the clamping mechanism (2); The fine grinding mechanism (1) comprises an outer connecting rail (11), the top of the outer connecting rail (11) is slidably adapted to be equipped with a support plate (12), the interior of the support plate (12) is rotatably connected to a rotating roller (13), wherein the rotating roller (13) is driven by external electric power, and the outer side of the support plate (12) is respectively plugged with an insertion rod (14) and an electric telescopic rod (15), the outer end of the insertion rod (14) is fixedly connected to a rod ring (16), and the end of the insertion rod (14) away from the rod ring (16) is fixedly connected to a three-side plate (17), and the three-side plate (17) is nested on the inner side of the rotating roller (13); The interior of the rotating roller (13) is rotatably connected to a driving shaft (18), and the outer side of the driving shaft (18) is extruded and adapted to be equipped with a fine grinding disc (19); A first adapter sleeve (10) and a second adapter sleeve (101) are symmetrically arranged on both sides of the fine grinding disc (19), and the first adapter sleeve (10) and the second adapter sleeve (101) are both extruded and fitted on the outer side of the driving shaft (18), and a circular embedding groove (102) and an arc-shaped embedding groove (103) are respectively opened on the outer side of the second adapter sleeve (101), wherein the inner wall of the circular embedding groove (102) is extruded and fitted with the telescopic end of the electric telescopic rod (15), and the inner wall of the arc-shaped embedding groove (103) is extruded and fitted with the outer end surface of the three-side plate (17); The clamping mechanism (2) comprises an end grinding assembly (21), a processing piece (22) is arranged inside the end grinding assembly (21), a collecting assembly (25) is arranged directly below the processing piece (22), a double top assembly (23) is arranged at one end of the end grinding assembly (21) away from the processing piece (22), and a driving assembly (24) is arranged below the double top assembly (23); The end grinding assembly (21) comprises a side rail (211), the outer side of the side rail (211) is fixedly connected to the outer connecting rail (11), the inner side rail (211) is slidably adapted to be provided with a slide (212), the top of the slide (212) is fixedly connected to an inner curved sleeve (213), the outer end of the inner curved sleeve (213) is fixedly connected to a vertical rail (214), a motor (215) is fixedly installed on the top of the vertical rail (214), the bottom of the motor (215) is connected to a first screw rod (216) via a coupling, and the first screw rod (216) is rotatably connected to the inside of the vertical rail (214); The outer side of the No. 1 screw rod (216) is threadedly connected to a sliding disc (217), the bottom of the sliding disc (217) is fixedly connected to a No. 1 grinding disc (218), both ends of the No. 1 grinding disc (218) are symmetrically connected to insert ring rods (219), and one end of the insert ring rod (219) away from the No. 1 grinding disc (218) is sleeved with a sleeve ring rod (210).

2. The double-top clamping external cylindrical fine grinding device for a motor shaft according to claim 1, characterized in that: The outer ends of the No. 1 grinding disc (218) are respectively fixedly connected to elastic rods (2101) and return springs (2102); the ends of the elastic rods (2101) and return springs (2102) away from the No. 1 grinding disc (218) are both fixedly connected to the No. 2 grinding disc (2103); the top of the No. 2 grinding disc (2103) is extruded and adapted with a bottom curved block (2104); the top of the bottom curved block (2104) is fixedly connected to a moving rod (2105); the moving rod (2105) is inserted through the bottom of the sliding disc (217) and extends to the top thereof; the top of the moving rod (2105) is fixedly connected to a top plate (2106).

3. The double-top clamping external cylindrical fine grinding device for a motor shaft according to claim 1, characterized in that: The double top assembly (23) comprises a top head (231), the top head (231) is inserted into the interior of the inner curved sleeve (213), one end of the top head (231) away from the inner curved sleeve (213) is rotatably connected to an inner connecting plate (237), the interior of the top head (231) is slidably adapted to be equipped with a compensating head (232), the outer side of the compensating head (232) is fixedly connected to a spring (233), and the end of the spring (233) away from the compensating head (232) is fixedly connected to the inner connecting plate (237). Connected to the inner side of the mandrel (231), the end of the compensating head (232) away from the inner curved sleeve (213) is fixedly connected to a pressure block (234), the top of the pressure block (234) is extruded and adapted with an inclined panel (235), the inclined panel (235) is inserted into the top of the mandrel (231), the outer side of the inclined panel (235) is fixedly connected to a driving telescopic rod (236), and the driving telescopic rod (236) is fixedly connected to the outer side of the mandrel (231).

4. The double-top clamping external cylindrical fine grinding device for a motor shaft according to claim 1, characterized in that: The driving assembly (24) comprises a sliding rod (241), wherein the sliding rod (241) is fixedly connected to the outer end surface of the side rail (211), the outer side of the sliding rod (241) is slidably adapted to the inner connecting plate (237), the inner side of the inner connecting plate (237) is fixedly mounted with an inner connecting rod (247), the inner connecting rod (247) is inserted into the surface of the sliding frame (212), and one end of the sliding rod (241) away from the side rail (211) is fixedly connected to a No. 1 support (242), and the outer end of the side rail (211) is fixedly connected to the No. 1 support (242). The inner part of the surface is extruded and adapted with a bearing (246), the inner part of the bearing (246) is extruded and adapted with a second screw rod (243), the outer side of the second screw rod (243) is threadedly connected to the inner plate (237), the outer side of the second screw rod (243) is rotatably mounted with a second support (244), the end of the second screw rod (243) away from the bearing (246) is connected to a small motor (245) through a coupling, and the small motor (245) is fixedly mounted on the outer side of the second support (244).

5. The double-top clamping external cylindrical fine grinding device for a motor shaft according to claim 1, characterized in that: The collecting assembly (25) comprises a lap rod (251), the outer end of the lap rod (251) is fixedly connected to the inner end of the side rail (211), the top of the lap rod (251) is fixedly connected to a collecting frame (252), the inner side of the collecting frame (252) is fixedly connected to a first magnet (253), the top of the collecting frame (252) is fixedly connected to a cross rail (256), the top of the cross rail (256) is slidably adapted to be equipped with a cover plate (255), the top of the cover plate (255) is fixedly connected to a pressure plate (257), and the center portion of the bottom of the cover plate (255) is fixedly connected to a second magnet (254).

6. A method for fine grinding the outer circle of a motor shaft by double-top clamping, used for the double-top clamping outer circle fine grinding device of a motor shaft according to any one of claims 1 to 5, characterized in that: The following steps are involved: Step 1: Pre-clamping treatment, the bottom curved block (2104) moving downward will squeeze the second grinding disc (2103) outward, causing the second grinding disc (2103) to move toward the center of the workpiece (22), and then the workpiece (22) will be pre-clamped and prepared for grinding; Step 2: Limit clamping, insert the inclined plate (235) from the top of the top head (231) into the inside thereof, then the bottom of the inclined plate (235) will squeeze the pressure block (234), and the compensating head (232) connected to the other side of the pressure block (234) will extend from the inside of the top head (231) and compress the spring (233) until its extended end squeezes and limits the end surface of the workpiece (22); Step 3: waste chip collection, the pressure plate (257) is impacted, wherein the bottom of the pressure plate (257) is connected to the cover plate (255), so the cover plate (255) will move outward along the horizontal rail (256), and then the top of the collection frame (252) will be exposed, so that the subsequent grinding chips can be collected and processed; Step 4: Fine grinding, by moving the support plate (12) along the outer connecting rail (11) toward the workpiece (22), one of the fine grinding discs (19) will be attached to the surface of the workpiece (22), and the head (231) will be driven to rotate by external power, and the fine grinding disc (19) will grind the workpiece (22).

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