CN112157525A - Automobile plastic part cylinder blank machining and polishing device - Google Patents
Automobile plastic part cylinder blank machining and polishing device Download PDFInfo
- Publication number
- CN112157525A CN112157525A CN202011057952.9A CN202011057952A CN112157525A CN 112157525 A CN112157525 A CN 112157525A CN 202011057952 A CN202011057952 A CN 202011057952A CN 112157525 A CN112157525 A CN 112157525A
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- CN
- China
- Prior art keywords
- polishing
- groove
- moving groove
- moving
- blank
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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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
- B24B9/00—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor
- B24B9/02—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor characterised by a special design with respect to properties of materials specific to articles to be ground
- B24B9/20—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor characterised by a special design with respect to properties of materials specific to articles to be ground of plastics
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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
- B24B41/00—Component parts such as frames, beds, carriages, headstocks
- B24B41/06—Work supports, e.g. adjustable steadies
- B24B41/061—Work supports, e.g. adjustable steadies axially supporting turning workpieces, e.g. magnetically, pneumatically
-
- 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
- B24B47/00—Drives or gearings; Equipment therefor
-
- 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
- B24B47/00—Drives or gearings; Equipment therefor
- B24B47/02—Drives or gearings; Equipment therefor for performing a reciprocating movement of carriages or work- tables
- B24B47/04—Drives or gearings; Equipment therefor for performing a reciprocating movement of carriages or work- tables by mechanical gearing only
-
- 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
- B24B47/00—Drives or gearings; Equipment therefor
- B24B47/10—Drives or gearings; Equipment therefor for rotating or reciprocating working-spindles carrying grinding wheels or workpieces
- B24B47/12—Drives or gearings; Equipment therefor for rotating or reciprocating working-spindles carrying grinding wheels or workpieces by mechanical gearing or electric power
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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
- B24B5/00—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor
- B24B5/02—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor involving centres or chucks for holding work
- B24B5/04—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor involving centres or chucks for holding work for grinding cylindrical surfaces externally
- B24B5/045—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor involving centres or chucks for holding work for grinding cylindrical surfaces externally with the grinding wheel axis perpendicular to the workpiece axis
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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
- B24B53/00—Devices or means for dressing or conditioning abrasive surfaces
- B24B53/007—Cleaning of grinding wheels
-
- 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
- B24B55/02—Equipment for cooling the grinding surfaces, e.g. devices for feeding coolant
Abstract
The invention relates to the field of automobile part processing, and particularly discloses an automobile plastic part cylindrical blank processing and polishing device which comprises a shell, a polishing motor, a polishing disc and a moving groove, wherein the polishing motor is arranged on the shell; a horizontal moving groove is arranged right below the polishing disc, a rotating motor is fixedly arranged on the outer side of the moving groove, an output shaft of the rotating motor penetrates through the through hole and extends into the moving groove, and a contact plate is coaxially and fixedly arranged on the output shaft of the rotating motor; one end of the clamping bolt, which is positioned in the moving groove, is fixedly provided with a moving clamping plate, and the moving clamping plate is rotatably provided with another contact plate; the fixed seat is provided with a horizontal roller groove along the front-back direction, and the bottom of the corresponding moving groove right above the roller groove is provided with a moving roller. The rotary motor drives the blank to rotate, the blank is fully contacted with the polishing disc, and the blank is clamped and fixed through the contact plates on the two sides, so that the blank polishing device is not limited by the size of the blank, and has a wide application range.
Description
Technical Field
The invention relates to the field of automobile part processing, in particular to a polishing device for processing a cylindrical blank of an automobile plastic part.
Background
The automobile plastic part is one of important devices on an automobile, and in the processing process of the automobile plastic part, a cylindrical blank is formed by cutting, casting and the like, and the blank needs to be polished in the processing process, so that burrs are removed, the surface of the blank is smooth, and the subsequent processing needs are facilitated. The existing polishing device can polish the cylindrical blank, but needs frequent adjustment and is complex to operate; some devices for polishing the cylindrical blank are complex in structure, and the size of a cylinder capable of being polished is limited, so that the large-scale use of enterprises is not facilitated; in addition, the powder that the in-process of polishing was polished off is easily attached to the polishing disc surface for the effect of polishing worsens gradually, consequently, needs improve current cylinder blank grinding device, solves above-mentioned problem.
Disclosure of Invention
The invention aims to provide a polishing device for machining a cylindrical blank of an automobile plastic part, which aims to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme:
a polishing device for machining a cylindrical blank of an automobile plastic part comprises a shell, a polishing motor, a polishing disc and a moving groove; the polishing motor is arranged on the top in the shell in a height-adjustable manner, is vertically arranged, is coaxially and fixedly provided with a horizontal polishing disc at the lower end of an output shaft of the polishing motor, and drives the polishing disc to rotate through the polishing motor, so that the polishing disc can be used for polishing the arc surface of the cylindrical blank placed below in a contact manner; a horizontal moving groove is arranged right below the polishing disc, is a U-shaped groove and has an upward opening; a through hole is formed in the top of one side of the moving groove, a rotating motor is fixedly mounted on the outer side of the moving groove, an output shaft of the rotating motor penetrates through the through hole and extends into the moving groove, and a contact plate is coaxially and fixedly mounted on the output shaft of the rotating motor; a threaded hole coaxial with the through hole is formed in the other side of the moving groove, a horizontal clamping bolt penetrates through the internal thread of the threaded hole, a moving clamping plate is fixedly mounted at one end, located in the moving groove, of the clamping bolt, another contact plate is rotatably mounted on the moving clamping plate, the contact plates on the two sides are arranged in parallel and oppositely and are in contact with the placed blank, the blank is clamped by the contact plates through rotating the clamping bolt and is fixed, and the blank is driven to rotate through rotating a rotating motor; the bottom of the moving groove is provided with a fixed seat fixed at the bottom of the shell, the fixed seat is provided with a horizontal roller groove along the front-back direction, moving rollers are installed on the bottoms of the moving grooves corresponding to the positions right above the roller grooves, and the moving rollers horizontally move in the roller grooves, so that the positions of the moving grooves are changed, polishing is carried out at different positions of a moving blank and a polishing disc in the polishing process, and the polishing uniformity is ensured.
Further: the width of the moving groove is equal to the diameter of the polishing disc, so that the polishing disc can polish the blanks placed in the moving groove.
Further: the bottom of the moving groove is communicated with an exhaust pipe, the other end of the exhaust pipe is connected with an induced draft fan, air in the moving groove is exhausted, and ground powder ground by polishing enters the moving groove along with the air.
Further: all fixed mounting has a plurality of jetting pipe on the top of shifting chute and being located the front and back both sides of abrasive disc, through pipeline intercommunication fan on the jetting pipe, jetting pipe slope is towards the top in the shifting chute, makes the jetting pipe of both sides just to abrasive disc when shifting chute is followed the removal, blows to abrasive disc surface, blows off the adnexed powder of abrasive disc surface, also can reduce the temperature of abrasive disc.
Further: the fan is communicated with the refrigeration equipment through a pipeline, so that cold air is blown out from the blowing pipe to the polishing disc.
Further: the bottom of the shell is fixedly provided with a swing plate, the lower side of the swing plate is provided with a horizontal base, the middle of the base is fixedly provided with a supporting seat, the supporting seat is rotatably provided with a horizontal rotating shaft through a bearing, the rotating shaft is parallel to the moving idler wheel, and the moving idler wheel rolls in the idler wheel groove when the swing plate swings around the rotating shaft to change the position of the moving groove.
Further: one of base serves fixed mounting has vertical lift cylinder, and fixed mounting has the horizontally spacing slide bar on the output of lift cylinder, and spacing slide bar is parallel with the axis of rotation, and the swinging plate downside that spacing slide bar corresponds is seted up has the spacing spout of horizontally, and spacing slide bar is located spacing spout, and horizontal slip in spacing spout through the tip of lift cylinder push-and-pull swinging plate changes the inclination of swinging plate.
Further: the other end of the base is fixedly provided with a plurality of vertical supporting springs, the upper ends of the supporting springs are fixed on the lower surface of the swinging plate, and the supporting springs are stretched and compressed in the process that the swinging plate is pushed and pulled by the lifting cylinder, so that the swinging is convenient to swing up and down, and the load of the lifting cylinder is reduced.
Compared with the prior art, the invention has the beneficial effects that: the rotary motor drives the blank to rotate, the blank is fully contacted with the polishing disc, and the blank is clamped and fixed through the contact plates on the two sides, so that the blank polishing machine is not limited by the volume of the blank, and has a wide application range; the movable groove moves back and forth in the polishing process, air is blown out towards the blowing pipe of the polishing disc, and powder attached to the polishing disc is blown out, so that the polishing effect of the polishing disc is guaranteed, the temperature of the polishing disc can be reduced, and the service life of the polishing disc is prolonged.
Drawings
Fig. 1 is a schematic structural diagram of an automotive plastic part cylinder blank processing and polishing device.
Fig. 2 is an enlarged schematic view of a in fig. 1.
Fig. 3 is a schematic structural diagram of a moving groove in an automobile plastic part cylinder blank processing and polishing device.
Fig. 4 is a schematic connection diagram of a swing plate in the polishing device for processing the cylindrical blank of the automobile plastic part.
In the figure: 1-shell, 2-base, 3-oscillating plate, 4-grinding motor, 5-grinding disc, 6-moving groove, 7-rotating motor, 8-contact plate, 9-moving clamping plate, 10-clamping bolt, 11-fixing seat, 12-moving roller, 13-roller groove, 14-supporting seat, 15-rotating shaft, 16-supporting spring, 17-lifting cylinder, 18-limiting slide rod, 19-limiting sliding groove, 20-air exhaust pipe, 21-induced draft fan, 22-blowing pipe, 23-fan, 24-refrigeration equipment, 25-through hole and 26-threaded hole.
Detailed Description
Example 1
Referring to the figures, in the embodiment of the invention, the polishing device for machining the cylindrical blank of the automobile plastic part comprises a shell 1, a polishing motor 4, a polishing disc 5 and a moving groove 6; the polishing motor 4 is mounted on the top in the shell 1 in a height-adjustable manner, the polishing motor 4 is vertically arranged, a horizontal polishing disc 5 is coaxially and fixedly mounted at the lower end of an output shaft of the polishing motor 4, and the polishing disc 5 is driven to rotate by the polishing motor 4, so that the polishing disc 5 can be used for polishing the arc surface of the cylindrical blank placed below in a contact manner; a horizontal moving groove 6 is arranged right below the polishing disc 5, the moving groove 6 is a U-shaped groove, the opening is upward, the width of the moving groove 6 is equal to the diameter of the polishing disc 5, and the polishing disc 5 can polish blanks placed in the moving groove 6.
A through hole 25 is formed in the top of one side of the moving groove 6, a rotating motor 7 is fixedly mounted on the outer side of the moving groove 6, an output shaft of the rotating motor 7 penetrates through the through hole 25 and extends into the moving groove 6, and a contact plate 8 is coaxially and fixedly mounted on the output shaft of the rotating motor 7; a threaded hole 26 coaxial with the through hole 25 is formed in the other side of the moving groove 6, a horizontal clamping bolt 10 penetrates through the internal thread of the threaded hole 26, a moving clamp plate 9 is fixedly installed at one end, located in the moving groove 6, of the clamping bolt 10, another contact plate 8 is rotatably installed on the moving clamp plate 9, the contact plates 8 on the two sides are arranged in parallel and oppositely and are in contact with the placed blank, the contact plates 8 clamp the blank by rotating the clamping bolt 10 to fix the blank, and the blank is driven to rotate by rotating the rotating motor 7; the bottom of the moving groove 6 is provided with a fixed seat 11 fixed at the bottom of the shell 1, the fixed seat 11 is provided with a horizontal roller groove 13 along the front-back direction, the bottom of the moving groove 6 corresponding to the position right above the roller groove 13 is provided with a moving roller 12, and the moving roller 12 moves horizontally in the roller groove 13, so that the position of the moving groove 6 is changed, and the polishing is carried out at different positions of the moving blank and the polishing disc 5 in the polishing process, and the polishing uniformity is ensured.
The bottom of the moving groove 6 is communicated with an air exhaust pipe 20, the other end of the air exhaust pipe 20 is connected with an induced draft fan 21, air in the moving groove 6 is exhausted, and ground powder ground by grinding enters the moving groove 6 along with the air; a plurality of blowing pipes 22 are fixedly mounted on the top of the moving groove 6 and positioned on the front side and the rear side of the polishing disc 5, the blowing pipes 22 are communicated with a fan 23 through pipelines, the blowing pipes 22 incline to the upper part in the moving groove 6, the blowing pipes 22 on the two sides are enabled to face the polishing disc 5 when the moving groove 6 moves along with the moving groove, air is blown to the surface of the polishing disc 5, powder attached to the surface of the polishing disc 5 is blown away, and the temperature of the polishing disc 5 can also be reduced; the fan 23 is connected to the cooling device 24 through a pipe, and blows the cold air from the blowing pipe 22 toward the polishing disk 5.
Example 2
On the basis of embodiment 1, a swing plate 3 is fixedly installed on the bottom of the housing 1, a horizontal base 2 is arranged on the lower side of the swing plate 3, a support seat 14 is fixedly installed on the middle part of the base 2, a horizontal rotating shaft 15 is rotatably installed on the support seat 14 through a bearing, the rotating shaft 15 is parallel to the moving roller 12, the moving roller 12 rolls in the roller groove 13 when the swing plate 3 swings around the rotating shaft 15, and the position of the moving groove 6 is changed; a vertical lifting cylinder 17 is fixedly installed at one end of the base 2, a horizontal limiting slide rod 18 is fixedly installed at the output end of the lifting cylinder 17, the limiting slide rod 18 is parallel to the rotating shaft 15, a horizontal limiting slide groove 19 is formed in the lower side of the swing plate 3 corresponding to the limiting slide rod 18, the limiting slide rod 18 is located in the limiting slide groove 19 and slides horizontally in the limiting slide groove 19, and the end part of the swing plate 3 is pushed and pulled through the lifting cylinder 17 to change the inclination angle of the swing plate 3; the other end of the base 2 is fixedly provided with a plurality of vertical supporting springs 16, the upper ends of the supporting springs 16 are fixed on the lower surface of the swinging plate 3, and the supporting springs 16 are stretched and compressed in the process that the swinging plate 3 is pushed and pulled by the lifting cylinder 17, so that the swinging is convenient, and the load of the lifting cylinder 17 is reduced.
When the polishing machine is used, a blank to be polished is placed between the two contact plates 8, the contact plates 8 are clamped on the two sides of the blank by rotating the clamping bolts 10, after the blank is fixed, the rotating motor 7 is started to drive the blank to rotate, and meanwhile, the polishing motor 4 is driven after being adjusted to a proper height, so that the polishing disc 5 rotates to polish the surface of the blank; the lifting cylinder 17 drives the swinging plate 3 to swing up and down, after the whole shell 1 swings up and down, the moving groove 6 moves back and forth on the fixed seat 11, the relative position of the blank and the polishing disc 5 is changed, the blank is in contact with different positions of the polishing disc 5, the polishing uniformity is ensured, the blowing pipe 22 can blow air to the polishing disc 5 in the moving process of the moving groove 6, the attached powder on the polishing disc 5 is blown away in time, and the polishing effect is ensured.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (8)
1. A polishing device for machining a cylindrical blank of an automobile plastic part comprises a shell (1), a polishing motor (4), a polishing disc (5) and a moving groove (6); the polishing motor (4) is mounted on the top in the shell (1) in a height-adjustable manner, the polishing motor (4) is vertically arranged, and a horizontal polishing disc (5) is coaxially and fixedly mounted at the lower end of an output shaft of the polishing motor (4); the polishing machine is characterized in that a horizontal moving groove (6) is arranged right below the polishing disc (5), the moving groove (6) is a U-shaped groove, and the opening of the moving groove faces upwards; a through hole (25) is formed in the top of one side of the moving groove (6), a rotating motor (7) is fixedly mounted on the outer side of the moving groove (6), an output shaft of the rotating motor (7) penetrates through the through hole (25) and extends into the moving groove (6), and a contact plate (8) is coaxially and fixedly mounted on the output shaft of the rotating motor (7); a threaded hole (26) coaxial with the through hole (25) is formed in the other side of the movable groove (6), a horizontal clamping bolt (10) penetrates through the threaded hole (26), a movable clamping plate (9) is fixedly mounted at one end, located in the movable groove (6), of the clamping bolt (10), another contact plate (8) is rotatably mounted on the movable clamping plate (9), and the contact plates (8) on the two sides are arranged in a parallel and opposite mode; the bottom of the moving groove (6) is provided with a fixed seat (11) fixed at the bottom of the shell (1), the fixed seat (11) is provided with a horizontal roller groove (13) along the front-back direction, the bottom of the moving groove (6) corresponding to the position right above the roller groove (13) is provided with a moving roller (12), and the moving roller (12) horizontally moves in the roller groove (13).
2. The automotive plastic part cylinder blank machining and grinding device as claimed in claim 1, wherein: the width of the moving groove (6) is equal to the diameter of the polishing disc (5).
3. The automotive plastic part cylinder blank machining and grinding device as claimed in claim 1, wherein: the bottom of the movable groove (6) is communicated with an exhaust pipe (20), and the other end of the exhaust pipe (20) is connected with an induced draft fan (21).
4. The automotive plastic part cylinder blank machining and grinding device as claimed in claim 3, wherein: a plurality of injection pipes (22) are fixedly mounted on the top of the moving groove (6) and positioned on the front side and the rear side of the polishing disc (5), the injection pipes (22) are communicated with a fan (23) through a pipeline, and the injection pipes (22) are inclined towards the upper part in the moving groove (6).
5. The automotive plastic part cylinder blank machining and grinding device as claimed in claim 4, wherein: the fan (23) is communicated with the refrigerating equipment (24) through a pipeline.
6. The automotive plastic cylinder blank machining and polishing device as claimed in any one of claims 1 to 5, wherein: fixed mounting has swing board (3) on the bottom of casing (1), and the downside of swing board (3) is provided with horizontally base (2), and fixed mounting has supporting seat (14) on the middle part of base (2), rotates through the bearing on supporting seat (14) and installs horizontally axis of rotation (15), axis of rotation (15) with removal gyro wheel (12) parallel.
7. The automotive plastic part cylinder blank machining and grinding device as claimed in claim 6, wherein: one end of the base (2) is fixedly provided with a vertical lifting cylinder (17), the output end of the lifting cylinder (17) is fixedly provided with a horizontal limiting slide rod (18), the limiting slide rod (18) is parallel to the rotating shaft (15), the lower side of the swing plate (3) corresponding to the limiting slide rod (18) is provided with a horizontal limiting slide groove (19), and the limiting slide rod (18) is positioned in the limiting slide groove (19) and horizontally slides in the limiting slide groove (19).
8. The automotive plastic part cylinder blank machining and grinding device as claimed in claim 7, wherein: a plurality of vertical supporting springs (16) are fixedly installed at the other end of the base (2), and the upper ends of the supporting springs (16) are fixed on the lower surface of the swinging plate (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011057952.9A CN112157525A (en) | 2020-09-30 | 2020-09-30 | Automobile plastic part cylinder blank machining and polishing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011057952.9A CN112157525A (en) | 2020-09-30 | 2020-09-30 | Automobile plastic part cylinder blank machining and polishing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112157525A true CN112157525A (en) | 2021-01-01 |
Family
ID=73861558
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011057952.9A Withdrawn CN112157525A (en) | 2020-09-30 | 2020-09-30 | Automobile plastic part cylinder blank machining and polishing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112157525A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113523862A (en) * | 2021-07-27 | 2021-10-22 | 无锡海勒机械有限公司 | Pneumatic type does not have a wound centre gripping frock that precision machinery parts machining used |
| CN115091301A (en) * | 2022-08-09 | 2022-09-23 | 江西万橡家具集团有限公司 | Polishing device for steel-wood furniture processing |
-
2020
- 2020-09-30 CN CN202011057952.9A patent/CN112157525A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113523862A (en) * | 2021-07-27 | 2021-10-22 | 无锡海勒机械有限公司 | Pneumatic type does not have a wound centre gripping frock that precision machinery parts machining used |
| CN115091301A (en) * | 2022-08-09 | 2022-09-23 | 江西万橡家具集团有限公司 | Polishing device for steel-wood furniture processing |
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| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20210101 |
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