CN114603443A - Abrasive belt type electrode grinding device with self-adaptive grinding flatness - Google Patents
Abrasive belt type electrode grinding device with self-adaptive grinding flatness Download PDFInfo
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- CN114603443A CN114603443A CN202210345008.6A CN202210345008A CN114603443A CN 114603443 A CN114603443 A CN 114603443A CN 202210345008 A CN202210345008 A CN 202210345008A CN 114603443 A CN114603443 A CN 114603443A
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- Prior art keywords
- grinding
- abrasive belt
- adaptive
- wheel set
- self
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- 230000007246 mechanism Effects 0.000 claims abstract description 23
- 230000005540 biological transmission Effects 0.000 claims abstract description 8
- 230000003044 adaptive effect Effects 0.000 claims description 15
- 238000009434 installation Methods 0.000 claims description 9
- 230000010485 coping Effects 0.000 claims description 7
- 229910001651 emery Inorganic materials 0.000 claims description 2
- 238000003466 welding Methods 0.000 description 14
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 244000137852 Petrea volubilis Species 0.000 description 1
- 238000005219 brazing Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B21/00—Machines or devices using grinding or polishing belts; Accessories therefor
- B24B21/006—Machines or devices using grinding or polishing belts; Accessories therefor for special purposes, e.g. for television tubes, car bumpers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B21/00—Machines or devices using grinding or polishing belts; Accessories therefor
- B24B21/18—Accessories
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B21/00—Machines or devices using grinding or polishing belts; Accessories therefor
- B24B21/18—Accessories
- B24B21/20—Accessories for controlling or adjusting the tracking or the tension of the grinding belt
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B27/00—Other grinding machines or devices
- B24B27/033—Other grinding machines or devices for grinding a surface for cleaning purposes, e.g. for descaling or for grinding off flaws in the surface
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B41/00—Component parts such as frames, beds, carriages, headstocks
- B24B41/007—Weight compensation; Temperature compensation; Vibration damping
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B55/00—Safety devices for grinding or polishing machines; Accessories fitted to grinding or polishing machines for keeping tools or parts of the machine in good working condition
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
Abstract
The invention discloses a grinding flatness self-adaptive abrasive belt type electrode grinding device which comprises a mounting plate, wherein a driving motor and a driving wheel are fixed at one end of the mounting plate, an output shaft of the driving motor is connected with the driving wheel, a slide rail is fixed at the other end of the mounting plate, a tension pulley is arranged on the slide rail through a slide seat, the driving wheel is in transmission connection with the tension pulley through an abrasive belt, the slide seat is also connected with the mounting plate through a self-adaptive tension assembly, a grinding compensation mechanism is arranged between the driving wheel and the tension pulley, horizontal supporting blocks are arranged in the middle of the upper side and the lower side of the grinding compensation mechanism, an upper supporting wheel set and a lower supporting wheel set are respectively fixed on the grinding compensation mechanisms on the left side and the right side of the horizontal supporting blocks, and the upper supporting wheel set is in transmission contact with the lower supporting wheel set and the abrasive belt. The electrode grinding device can be self-adaptive to grinding of the upper electrode and the lower electrode in different gaps, so that the grinding flatness of the electrodes is controllable, and the flatness of the surfaces of the polished electrodes is ensured.
Description
Technical Field
The invention relates to the technical field of electrode grinding of projection welding equipment, in particular to a sand belt type electrode grinding device with self-adaptive grinding flatness.
Background
Projection welding is a high-efficiency welding method capable of simultaneously performing multiple spot welding, and is widely used in the automobile industry instead of arc welding, brazing, and snap-in. When welding, one or more salient points are processed on the joint surface of the workpiece in advance, and the workpiece is electrified, heated and then collapsed, so that welding spots are formed on the contact points. The projection welding motor can form an oxide layer on the surface after being used for many times, thereby affecting the welding quality.
However, in the prior art, the manual mode of sand paper or file is mostly adopted for electrode grinding, which not only has high labor intensity and wastes time and labor, but also easily causes the phenomenon of uneven bottom on the surface of the electrode after grinding, and the grinding quality cannot be ensured.
Disclosure of Invention
Aiming at the defects of the prior art, the invention aims to provide the abrasive belt type electrode grinding device with the self-adaptive grinding flatness, which not only can conveniently and quickly realize the grinding of the electrode, but also can be self-adaptive to the upper electrode and the lower electrode with different gaps, so that the grinding flatness of the electrode is controllable, and the flatness of the surface of the electrode after grinding is ensured.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
the utility model provides a emery belt formula electrode coping device of coping roughness self-adaptation which the key lies in: the grinding compensation mechanism is characterized by comprising a mounting plate, wherein a driving motor and a driving wheel are fixed at one end of the mounting plate, an output shaft of the driving motor is connected with the driving wheel, a slide rail is fixed at the other end of the mounting plate, a tensioning wheel is arranged on the slide rail through a slide seat, the driving wheel is in transmission connection with the tensioning wheel through an abrasive belt, the slide seat is further connected with the mounting plate through a self-adaptive tensioning assembly, a grinding compensation mechanism is arranged between the driving wheel and the tensioning wheel, horizontal supporting blocks are arranged in the middles of the upper side and the lower side of the grinding compensation mechanism respectively, the grinding compensation mechanism can drive the two horizontal supporting blocks to move in opposite directions or in a reverse direction, the abrasive belt forms an electrode grinding area at the horizontal supporting blocks, an upper supporting wheel set and a lower supporting wheel set are fixed on the grinding compensation mechanisms at the left side and the right side of the horizontal supporting blocks respectively, and the upper surface of the horizontal supporting wheel set is flush with the upper side edge of the upper supporting wheel set, the lower surface of the horizontal supporting block is flush with the lower side edge of the lower supporting wheel set, and the upper supporting wheel set is in transmission contact with the lower supporting wheel set and the abrasive belt.
Furthermore, driving motor with self-adaptation tensioning assembly is fixed in the trailing flank of mounting panel, driving motor's output shaft passes the mounting panel forward, driving wheel, take-up pulley and last supporting wheel group, lower supporting wheel group all locate the leading flank of mounting panel.
Further, self-adaptation tensioning assembly is including the fixed block, reset spring and the connecting block that connect gradually, the fixed block with mounting panel fixed connection, the connecting block with sliding seat fixed connection.
Furthermore, the sliding seat comprises a sliding block which is slidably supported on the sliding rail, the upper end of the sliding block is connected with a connecting part which is used for being connected with the self-adaptive tensioning assembly, an installation part for installing the tensioning wheel is fixed in the middle of the sliding block, a horizontal adjusting assembly is arranged at the lower end of the sliding block, and the front end of the horizontal adjusting assembly is abutted to the lower end of the installation part.
Further, horizontal adjustment subassembly includes adjust knob and the adjusting screw who links to each other with this adjust knob, and this adjusting screw wears to establish the lower extreme of slider, this adjusting screw's free end with the installation department butt.
Furthermore, the grinding compensation mechanism comprises a compensation cylinder fixed in the middle of the mounting plate, mounting beams are fixed at two ends of the compensation cylinder, and the horizontal support block, the upper support wheel group and the lower support wheel group are fixed on the mounting beams.
Furthermore, the left side and the right side of the compensation cylinder are provided with guide shafts side by side through bearing seats, and two ends of each guide shaft are connected with the mounting beam through linear bearings.
Furthermore, a compensation spring is connected between the linear bearing and the mounting beam and sleeved on the guide shaft.
The invention has the following remarkable effects:
1. the structure is simple, the use is convenient, the abrasive belt is driven to rotate by the driving motor, and the grinding of the upper electrode and the lower electrode can be simultaneously realized in the two electrode grinding areas formed at the two downward horizontal supporting blocks;
2. because the arrangement of the horizontal supporting block enables the two electrode grinding areas to be horizontal, the flatness of the surface of the ground electrode can be fully ensured, and the welding quality is prevented from being influenced;
3. through the matching of the grinding compensation mechanism and the self-adaptive tensioning assembly, the distance between the upper support wheel set and the lower support wheel set is adjustable, namely, the grinding areas of the two electrodes can be adaptive to the upper electrodes and the lower electrodes at different distances, and meanwhile, the grinding flatness of the electrodes can be controlled, so that the device can be adaptive to the electrode grinding of projection welding devices with different types and different grinding flatness, and the device is good in applicability.
Drawings
FIG. 1 is a schematic view of the structure of one aspect of the present invention;
FIG. 2 is a schematic view of another aspect of the present invention;
FIG. 3 is a front view of the present invention;
FIG. 4 is a rear view of the present invention;
fig. 5 is a bottom view of the present invention.
Detailed Description
The following provides a more detailed description of the embodiments and the operation of the present invention with reference to the accompanying drawings.
As shown in fig. 1-5, a belt-type electrode grinding device with adaptive grinding flatness comprises a mounting plate 1, a driving motor 2 and a driving wheel 3 are fixed at one end of the mounting plate 1, an output shaft of the driving motor 2 is connected with the driving wheel 3, a slide rail 4 is fixed at the other end of the mounting plate 1, a tension wheel 6 is arranged on the slide rail 4 through a slide seat 5, the driving wheel 3 is in transmission connection with the tension wheel 6 through a grinding belt 7, the slide seat 5 is further connected with the mounting plate 1 through an adaptive tension assembly 8, a grinding compensation mechanism 9 is arranged between the driving wheel 3 and the tension wheel 6, horizontal support blocks 12 are arranged at the middle parts of the upper side and the lower side of the grinding compensation mechanism 9, the grinding compensation mechanism 9 can drive the two horizontal support blocks 12 to move towards or away from each other, the grinding belt 7 forms an electrode grinding area at the horizontal support blocks 12, an upper supporting wheel set 10 and a lower supporting wheel set 11 are respectively fixed on the grinding compensation mechanisms 9 on the left side and the right side of the horizontal supporting block 12, the upper surface of the horizontal supporting block 12 is flush with the edge of the upper side of the upper supporting wheel set 10, the lower surface of the horizontal supporting block 12 is flush with the edge of the lower side of the lower supporting wheel set 11, and the upper supporting wheel set 10 is in transmission contact with the lower supporting wheel set 11 and the abrasive belt 7.
The abrasive belt is driven to rotate by the driving motor, the grinding of the upper electrode and the lower electrode can be simultaneously realized in two horizontal electrode grinding areas formed at the horizontal supporting blocks at the upper side and the lower side, and the grinding compensation mechanism is matched with the self-adaptive tensioning assembly, so that the distance between the upper supporting wheel set and the lower supporting wheel set is adjustable, namely the two electrode grinding areas can be suitable for the upper electrode and the lower electrode at different distances and can also be suitable for the electrode grinding at different grinding planeness.
Further, the driving motor 2 and the adaptive tensioning assembly 8 are fixed to the rear side surface of the mounting plate 1, the output shaft of the driving motor 2 passes through the mounting plate 1 forward, and the driving wheel 3, the tensioning wheel 6, the upper supporting wheel set 10 and the lower supporting wheel set 11 are all arranged on the front side surface of the mounting plate 1.
By the arrangement, the spatial arrangement of the device is more compact, the occupied space is reduced, the spatial layout of the device is optimized, and the device is more suitable for actual production.
Preferably, the sliding seat 5 includes a slider 51 slidably supported on the slide rail 4, a connecting portion 52 connected to an upper end of the slider 51 for connecting to the adaptive tension module 8, an installation portion 53 fixed to a middle portion of the slider 51 for installing the tension pulley 6, and a horizontal adjustment module 54 provided at a lower end of the slider 51, a front end of the horizontal adjustment module 54 abutting against a lower end of the installation portion 53.
The tensioning wheel can move along the sliding rail through the sliding seat, so that the tensioning of the abrasive belt is realized, the abrasive belt can be driven to rotate through the tensioning wheel and the driving wheel, and the grinding of the electrode can be realized; the sliding seat can be matched with a self-adaptive tensioning assembly connected with the sliding seat, so that the automatic tensioning of the abrasive belt is realized.
Further, the horizontal adjusting assembly 54 includes an adjusting knob and an adjusting screw connected to the adjusting knob, the adjusting screw is inserted into the lower end of the sliding block 51, and the free end of the adjusting screw abuts against the mounting portion 53.
Through foretell horizontal adjustment subassembly, can adjust whether the take-up pulley is horizontal to ensure that the upper and lower both sides of abrasive band are all in horizontal loading, and then guarantee the equal level of upper and lower electrode after the coping, thereby make the roughness of coping can the self-adaptation.
In this embodiment, the self-adaptive tensioning assembly 8 includes a fixed block 81, a return spring 82 and a connecting block 83 which are connected in sequence, the fixed block 81 is fixedly connected with the mounting plate 1, and the connecting block 83 is fixedly connected with the sliding seat 5.
In practice, the return spring 82 may be a gas spring, so that the automatic tensioning of the sanding belt is realized.
In this example, the coping compensation mechanism 9 includes a compensation cylinder 91 fixed in the middle of the mounting plate 1, mounting beams 92 are fixed at both ends of the compensation cylinder 91, and the upper support wheel set 10 and the lower support wheel set 11 are fixed on the mounting beams 92.
The distance between the upper supporting wheel set 10 and the lower supporting wheel set 11 can be adjusted by controlling the compensation cylinder, so that the distance between the upper side and the lower side of the abrasive belt can be adaptive to projection welding electrodes with different height differences.
Further, guide shafts 94 are arranged on the left side and the right side of the compensation cylinder 91 in parallel through bearing blocks 93, and two ends of each guide shaft 94 are connected with the mounting beam 92 through linear bearings 95.
The guide shaft is matched with the linear bearing, so that the bearing seat and the mounting beam can stably move up and down, the abrasive belt is ensured to be in a horizontal state all the time, and the grinding quality is ensured.
Further, a compensation spring is connected between the linear bearing 95 and the mounting beam 92, and the compensation spring is sleeved on the guide shaft 4.
Because the compensation cylinder is in an air leakage free state when the polishing work is carried out, the installation amount automatically stretches along the two guide shafts by the compensation spring through the arranged compensation spring, and the purpose of automatically adapting to the plane of the upper electrode and the lower electrode to be polished is achieved.
The device has simple structure and convenient use, the abrasive belt is driven to rotate by the driving motor, and the grinding of the upper electrode and the lower electrode can be simultaneously realized in the grinding areas of the two electrodes formed at the two downward horizontal supporting blocks; because the arrangement of the horizontal supporting block enables the two electrode grinding areas to be horizontal, the flatness of the surface of the ground electrode can be fully ensured, and the welding quality is prevented from being influenced; through the matching of the grinding compensation mechanism and the self-adaptive tensioning assembly, the distance between the upper support wheel set and the lower support wheel set is adjustable, namely, the grinding areas of the two electrodes can be adaptive to the upper electrodes and the lower electrodes at different distances, and meanwhile, the grinding flatness of the electrodes can be controlled, so that the device can be adaptive to the electrode grinding of projection welding devices with different types and different grinding flatness, and the device is good in applicability.
The technical solution provided by the present invention is described in detail above. The principles and embodiments of the present invention are explained herein using specific examples, which are presented only to assist in understanding the method and its core concepts. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.
Claims (8)
1. The utility model provides a emery belt formula electrode coping device of coping roughness self-adaptation which characterized in that: the grinding compensation mechanism is characterized by comprising a mounting plate, wherein a driving motor and a driving wheel are fixed at one end of the mounting plate, an output shaft of the driving motor is connected with the driving wheel, a slide rail is fixed at the other end of the mounting plate, a tensioning wheel is arranged on the slide rail through a slide seat, the driving wheel is in transmission connection with the tensioning wheel through an abrasive belt, the slide seat is further connected with the mounting plate through a self-adaptive tensioning assembly, a grinding compensation mechanism is arranged between the driving wheel and the tensioning wheel, horizontal supporting blocks are arranged in the middles of the upper side and the lower side of the grinding compensation mechanism respectively, the grinding compensation mechanism can drive the two horizontal supporting blocks to move in opposite directions or in a reverse direction, the abrasive belt forms an electrode grinding area at the horizontal supporting blocks, an upper supporting wheel set and a lower supporting wheel set are fixed on the grinding compensation mechanisms at the left side and the right side of the horizontal supporting blocks respectively, and the upper surface of the horizontal supporting wheel set is flush with the upper side edge of the upper supporting wheel set, the lower surface of the horizontal supporting block is flush with the lower side edge of the lower supporting wheel set, and the upper supporting wheel set is in transmission contact with the lower supporting wheel set and the abrasive belt.
2. The abrasive belt type electrode grinding device adaptive to grinding flatness according to claim 1, characterized in that: the driving motor with self-adaptation tensioning assembly is fixed in the trailing flank of mounting panel, driving motor's output shaft passes the mounting panel forward, driving wheel, take-up pulley and last supporting wheel group, lower supporting wheel group all locate the leading flank of mounting panel.
3. The abrasive belt type electrode grinding device adaptive to grinding flatness according to claim 1, characterized in that: the self-adaptive tensioning assembly comprises a fixed block, a return spring and a connecting block which are sequentially connected, the fixed block is fixedly connected with the mounting plate, and the connecting block is fixedly connected with the sliding seat.
4. The abrasive belt type electrode grinding device with self-adaptive grinding flatness according to claim 1 or 3, characterized in that: the sliding seat comprises a sliding block which is slidably supported on the sliding rail, the upper end of the sliding block is connected with a connecting part which is used for being connected with the self-adaptive tensioning assembly, the middle part of the sliding block is fixedly provided with an installation part for installing the tensioning wheel, the lower end of the sliding block is provided with a horizontal adjusting assembly, and the front end of the horizontal adjusting assembly is abutted to the lower end of the installation part.
5. The abrasive belt type electrode grinding device adaptive to grinding flatness according to claim 4, characterized in that: horizontal adjustment subassembly includes adjust knob and the adjusting screw who links to each other with this adjust knob, and this adjusting screw wears to establish the lower extreme of slider, this adjusting screw's free end with the installation department butt.
6. The abrasive belt type electrode grinding device adaptive to grinding flatness according to claim 1, characterized in that: the grinding compensation mechanism comprises a compensation cylinder fixed in the middle of the mounting plate, mounting beams are fixed at two ends of the compensation cylinder, and the horizontal support block, the upper support wheel set and the lower support wheel set are fixed on the mounting beams.
7. The abrasive belt type electrode grinding device adaptive to grinding flatness according to claim 6, characterized in that: and guide shafts are arranged on the left side and the right side of the compensation cylinder side by side through bearing seats, and two ends of each guide shaft are connected with the mounting beam through linear bearings.
8. The abrasive belt type electrode grinding device adaptive to grinding flatness according to claim 7, characterized in that: and a compensation spring is connected between the linear bearing and the mounting beam and sleeved on the guide shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210345008.6A CN114603443A (en) | 2022-03-31 | 2022-03-31 | Abrasive belt type electrode grinding device with self-adaptive grinding flatness |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210345008.6A CN114603443A (en) | 2022-03-31 | 2022-03-31 | Abrasive belt type electrode grinding device with self-adaptive grinding flatness |
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| Publication Number | Publication Date |
|---|---|
| CN114603443A true CN114603443A (en) | 2022-06-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210345008.6A Pending CN114603443A (en) | 2022-03-31 | 2022-03-31 | Abrasive belt type electrode grinding device with self-adaptive grinding flatness |
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|---|---|
| CN (1) | CN114603443A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110281120A (en) * | 2019-06-19 | 2019-09-27 | 禹奕智能科技（上海）有限公司 | Suitable for robot end's Flexible grinding and polishing apparatus |
| CN210790422U (en) * | 2019-07-17 | 2020-06-19 | 石家庄市顺心家私有限公司 | Furniture surface grinding device with safety protection function |
| CN212385216U (en) * | 2020-06-09 | 2021-01-22 | 佛山市鑫锦龙机械科技有限公司 | Automatic burnishing machine of centreless excircle |
| AU2020103623A4 (en) * | 2020-09-08 | 2021-02-04 | Suzhou Yuanlian Science and Technology Pioneer Park Management Co., Ltd | Abrasive belt grinder |
| CN112571230A (en) * | 2020-12-10 | 2021-03-30 | 杭州龙砺智能科技有限公司 | Abrasive belt machine and working method thereof |
| CN112658913A (en) * | 2020-12-23 | 2021-04-16 | 莱芜环球汽车零部件有限公司 | Deburring machine for thrust surface of automobile crankshaft |
| CN216991291U (en) * | 2022-03-31 | 2022-07-19 | 重庆山朕科技发展有限公司 | Abrasive belt type projection welding electrode grinding device with controllable grinding amount |
-
2022
- 2022-03-31 CN CN202210345008.6A patent/CN114603443A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110281120A (en) * | 2019-06-19 | 2019-09-27 | 禹奕智能科技（上海）有限公司 | Suitable for robot end's Flexible grinding and polishing apparatus |
| CN210790422U (en) * | 2019-07-17 | 2020-06-19 | 石家庄市顺心家私有限公司 | Furniture surface grinding device with safety protection function |
| CN212385216U (en) * | 2020-06-09 | 2021-01-22 | 佛山市鑫锦龙机械科技有限公司 | Automatic burnishing machine of centreless excircle |
| AU2020103623A4 (en) * | 2020-09-08 | 2021-02-04 | Suzhou Yuanlian Science and Technology Pioneer Park Management Co., Ltd | Abrasive belt grinder |
| CN112571230A (en) * | 2020-12-10 | 2021-03-30 | 杭州龙砺智能科技有限公司 | Abrasive belt machine and working method thereof |
| CN112658913A (en) * | 2020-12-23 | 2021-04-16 | 莱芜环球汽车零部件有限公司 | Deburring machine for thrust surface of automobile crankshaft |
| CN216991291U (en) * | 2022-03-31 | 2022-07-19 | 重庆山朕科技发展有限公司 | Abrasive belt type projection welding electrode grinding device with controllable grinding amount |
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Application publication date: 20220610 |