CN108436643A - A kind of double-ended grinding machine - Google Patents
A kind of double-ended grinding machine Download PDFInfo
- Publication number
- CN108436643A CN108436643A CN201810489157.3A CN201810489157A CN108436643A CN 108436643 A CN108436643 A CN 108436643A CN 201810489157 A CN201810489157 A CN 201810489157A CN 108436643 A CN108436643 A CN 108436643A
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- double
- grinding machine
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- mounting base
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- 238000000227 grinding Methods 0.000 title claims abstract description 67
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims abstract description 13
- 244000309464 bull Species 0.000 claims description 29
- 230000006835 compression Effects 0.000 claims description 22
- 238000007906 compression Methods 0.000 claims description 22
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 9
- 230000008569 process Effects 0.000 abstract description 9
- 238000003754 machining Methods 0.000 description 7
- 239000000696 magnetic material Substances 0.000 description 6
- 239000000463 material Substances 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- 230000009471 action Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000007246 mechanism Effects 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 230000003139 buffering effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Classifications
-
- 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
- B24B7/00—Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor
- B24B7/10—Single-purpose machines or devices
- B24B7/16—Single-purpose machines or devices for grinding end-faces, e.g. of gauges, rollers, nuts, piston rings
- B24B7/17—Single-purpose machines or devices for grinding end-faces, e.g. of gauges, rollers, nuts, piston rings for simultaneously grinding opposite and parallel end faces, e.g. double disc grinders
-
- 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
-
- 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
- B24B47/20—Drives or gearings; Equipment therefor relating to feed movement
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Grinding Of Cylindrical And Plane Surfaces (AREA)
Abstract
The invention discloses a kind of double-ended grinding machine, it is unstable to solve the problems, such as that workpiece is positioned in grinding process in, technical solution is grinding attachment, including opposite disposed grinding head device and forms Working position in centre；Mounting base, for placing workpiece to be processed；Horizontal clamping device carries out clamping and positioning pressing device for being carried out to the workpiece in mounting base in horizontal direction, compressed to workpiece and then carry out carrying out clamping and positioning on vertical direction；Wherein, the feeding pedestal has reached for mounting base to be delivered to Working position and is ground by grinding head device and has compressed the vertical grinding machine of firm Double End to workpiece, reached the high-precision requirement of grinding.
Description
Technical field
The present invention relates to machining tool technical fields, further relate to a kind of double-ended grinding machine.
Background technology
Grinding machine is industrially widely used for high-precisions fields such as two flat surface grindings such as magnet steel.It is existing to magnetic
Material end carry out grinding grinding machine be all include a conveyer belt, magnetic material to be ground is placed across in transport platform, it is defeated
Sending the both sides of platform to be provided with driving idler wheel causes magnetic material to be ground to run forward, the both sides of transport platform also have be oppositely arranged at
To abrasive grinding wheel, magnetic material to be ground is after pairs of abrasive grinding wheel just by abrasive grinding wheel to the left and right two of magnetic material to be ground
End face is ground, using such equipment for grinding, since magnetic material to be ground is no reliably fixed during conveying
Position, it cannot be guaranteed that the verticality of end face and side, it is understood that there may be put not just or in transportational process the case where sideslip, therefore not
But grinding quality can be made to be greatly reduced, and also affect the efficiency of grinding, grinding cannot be met and required, machining accuracy is caused
Lowly.
Invention content
The vertical grinding machine of firm Double End is compressed to workpiece the object of the present invention is to provide a kind of, reaches the high-precision of grinding
It is required that.
The present invention above-mentioned technical purpose technical scheme is that：A kind of double-ended grinding machine, including
Rack, the rack include：Grinding attachment, including opposite disposed grinding head device and in centre formed Working position；Mounting base,
For placing workpiece to be processed；Horizontal clamping device, for the workpiece in mounting base carry out in horizontal direction
Clamping and positioning pressing device compresses workpiece and then carries out carrying out clamping and positioning on vertical direction；Wherein, the feeding pedestal is used
In mounting base is delivered to Working position and is ground by grinding head device.
Further, the pressing device includes pressed seat, and the pusher with piston rod, the end of the piston rod
Portion is hinged with bull stick, and the opposite the other end of the bull stick is mutually pivotally connected with pressed seat, and the bull stick has compressed part, described
Pusher driving piston rod movement makes bull stick so that compressed part is pushed or is risen with pivotal point rotation in turn.
Further, it is in the compression bar of angle and the briquetting for being set to compression bar end that the compressed part, which includes with bull stick,.
Further, the horizontal clamping device includes horizontal base, is provided on the horizontal base and is driven by driver
Charging ram.
Further, the horizontal distance between the compression bar and pivotal point is L1, the hinge joint of the piston rod and bull stick
Horizontal distance between pivotal point is L2, and L1 ＜ L2.
Further, the feeding pedestal is to be arranged in rack and through the roller screw of Working position, the compression
Device and horizontal base are respectively arranged at the both sides of the opposite Working position of feeding pedestal, and the pressing device and horizontal base are and ball
Lead screw is connected, and a stepper motor is drivingly connected with guide post.
Further, the pusher and pusher are oil cylinder, and the stepper motor is stepper motor or servo motor.
Further, positioning tool is detachably installed, the width of the briquetting and charging ram is equal in the mounting base
Less than the width of positioning tool.
Further, the gag lever post for limiting bull stick is provided in the mounting base.
Further, the mounting base is connected with horizontal clamping device and clamping device is moved synchronously with realizing.
Through the above technical solutions, the present invention has the following advantages：
1, it clamps securely, is clamped securely under rough by the both direction in horizontal direction and in vertical direction,
And under machining state, opposed grinding wheel is fed simultaneously, can be positioned in six direction to workpiece while grinding, positioning stablity
Securely, high precision machining；
2, entire hold-down mechanism uses lever principle, i.e. horizontal distance between compression bar and pivotal point is L1 (power arm), described
Horizontal distance between piston rod and the hinge joint and pivotal point of bull stick is L2 (resistance arm), and power arm is less than resistance arm,
Make application obtain resistance to become to be amplified after power, acts on the pressure bigger of workpiece, clamp stable and firm.
3, workpieces processing is flexible, and tooling is detachable, it is only necessary to change different toolings；
4, automation is clamped, automation of retreating is high in machining efficiency；
5, through giving through servo motor or stepper motor, accuracy is high.
Description of the drawings
Attached drawing 1 is the overall schematic of the vertical grinding machine of Double End；
Attached drawing 2 is the schematic diagram that double-ended grinding machine removes grinding head device；
Attached drawing 3 is the schematic diagram of pressing device part；
Attached drawing 4 is the schematic diagram of horizontal clamping device part.
Reference numeral：1, rack；11, feed arrangement；111, guide post；2, pressing device；21, pressed seat；211, recessing groove；
22, pusher；23, bull stick；24, compression bar；241, briquetting；25, bearing mounting base；251, bearing；3, horizontal clamping device；31、
Horizontal base；32, charging ram；33, driver；34, rubber block；4, grinding head device；41, grinding wheel；5, mounting base；51, positioning tool；
511, positive stop end；52, gag lever post；53, alignment block；6, servo motor.
Specific implementation mode
Below in conjunction with attached drawing, invention is further described in detail.
It please refers to and reads Fig. 1, present embodiments provide a kind of double-ended grinding machine, be suitable for carrying out the Double End of workpiece same
The material of Shi Jiagong, workpiece can be the other materials such as magnet steel, which is clamped workpiece with multidirectional, in grinding machine
Firm workpiece clamping under machining state, stable equipment operation, high precision machining have the higher advantage of the degree of automation.
In conjunction with attached drawing 2, that is, include clamping for workpiece be the pressing device 2 clamped on vertical direction, also comprise for
The horizontal clamping device 3 of the clamping in horizontal direction is carried out to workpiece.Further, workpiece be fed to Working position it
Afterwards, the grinding head device 4 of both sides carries out while feeding and being ground to workpiece, and in grinding process, i.e., there are six direction is equal
It is clamped by stablizing, makes to clamp in process secured, it is ensured that the precision in grinding process.
As described above, the both sides of Working position all have a grinding head device 4, two grinding head devices 4 are opposite disposed, and
Work is fed simultaneously, the end face at the both ends of the workpiece in Working position is ground.Since grinding head device 4 is in grinding machine
Common equipment, details are not described herein for feeding and grinding action in the bistrique course of work.
Institute is corresponding, and the workpiece in the present embodiment can be relatively large workpiece, also or is in irregular shape
Workpiece, need individually to be fixed, so ensure Double face grinding high-precision.Meanwhile in the present embodiment workpiece material
Can be the other materials such as magnet steel.
Wherein, double-ended grinding machine includes rack 1, and rack 1 is linearly arranged, and pressing device 2 is provided in rack 1.
The position that pressing device 2 is arranged is provided with horizontal clamping device 3 substantially in one end of rack 1 in the other end.
In addition, in the medium position of rack 1, i.e., the position both sides between pressing device 2 and horizontal clamping device 3 are respectively provided with
There is grinding head device 4, define to form Working position between grinding head device 4, for being processed to the workpiece for entering the position.
It should be noted that being provided with feeding pedestal in rack 1, pressing device 2 is with horizontal clamping device 3 by setting
The linkage mechanism set in rack 1 is connected.That is, feeding pedestal is used for driving pressing device 2 with horizontal clamping device 3 along machine
The direction advanced in unison of frame 1 or retrogressing.
In the present embodiment, feeding pedestal is set as two guide posts 111, and at one end by servo motor 6 or stepping
Motor (not illustrated in figure) drives.It is driven using above-mentioned stepper motor or servo motor 6, not only drives roller screw
111 simultaneously synchronous drive pressing device 2 and the movements of horizontal clamping device 3, the mounting base 5 on pressing device 2 is transported along rack 1
To Working position.And it is driven by servo motor 6 or stepper motor, the position of feed accuracy higher, arrival is accurate, ensure that
Product quality.
Between pressing device 2 and horizontal device, it is additionally provided with mounting base 5, mounting base 5 is for placing work to be processed
Part, both ends of the mounting base 5 in the present embodiment are connected with horizontal clamping device 3 and pressing device 2 respectively.I.e. first by work
Part is placed in mounting base 5, is subsequently fed pedestal and is transported mounting base 5 to Working position, is and then determined by horizontal clamping device 3
Position and then be compacted device 2 positioning, then by the grinding wheel 41 of grinding head device 4 carry out grinding.
With reference to attached drawing 3, in addition, including pressed seat 21 in pressing device 2, pressed seat 21 is arranged in half-surrounded in mounting base
5 back upper place relative to Working position, in order to avoid mechanical interference is caused in process.It is provided at the rear of pressed seat 21
The lower hinge of pusher 22, pusher 22 is articulated with bull stick 23, in clamping seats on pedestal on the piston rod of pusher 22
Middle position offers recessing groove 211, and bull stick 23 is placed in the recessing groove 211, enables bull stick 23 as center, more convenient
Workpiece in tooling is clamped.And both sides are articulated in clamping seats, and the other end in bull stick 23 is provided with compressed part.
In the present embodiment, compressed part includes a compression bar 24, and one end of compression bar 24 is connected in bull stick 23, can be one
The mode for being molded or being welded to connect.In the angle between 15 ° to 30 ° between compression bar 24 and bull stick 23.And the work of pusher 22
It is in substantially 90 ° of angle between stopper rod and bull stick 23.In the state of undressed, compression bar 24 is horizontal.
The end of compression bar 24 is provided with briquetting 241, briquetting 241 can be dismountable mode, can also be and compression bar
24 integrally formed modes.Briquetting 241 and compression bar 24 are in 90 ° of settings, after facilitating compression bar 24 to rotate, briquetting 241 can with it is to be added
The Workpiece clamping of work.
Horizontal distance between compression bar 24 and pivotal point is L1, the hinge joint and pivotal point of the piston rod and bull stick 23 it
Between horizontal distance be L2, and L1 ＜ L2.By above-mentioned setting, entire hold-down mechanism uses lever principle, i.e. compression bar 24 and pivot
Horizontal distance between turning point is L1 (power arm), between the piston rod and the hinge joint and pivotal point of bull stick 23 it is horizontal away from
From for L2 (resistance arm), and power arm is less than resistance arm, so that application is obtained resistance and becomes to be amplified after power, acts on work
The pressure bigger of part clamps stable and firm.
It should be noted that in process, the piston rod of driver 33 ejects, meanwhile, driver 33 and level
Angle between face slightly increases, and under the action of piston rod ejects upwards, bull stick 23 is rotated by the center of circle of pivotal point, i.e. compression bar
24 are pressed downward, and the angle between piston rod and bull stick 23 is gradually reduced at this time.
That is, bull stick 23 tilts down 15 ° to 30 ° with pivotal point, can also be passed through by bearing 251 in pivotal point
In addition 251 mounting base 525 of bearing is set, bearing 251,251 mounting base of bearing, 525 energy are installed in 251 mounting base 525 of bearing
Pivoting centre structure is set more to stablize.
Mounting base 5 in the present embodiment can be a block length strip plate, mounting base 5 close to pressing device 2 one
End is connected with pressed seat 21, and the mode being connected in the present embodiment can fix for screw.Detachably connect in mounting base 5
It is connected to positioning tool 51, after workpiece to be processed is replaced, under positioning tool 51 being dismantled, installs and adapts to workpiece
Positioning tool 51.
Be provided with gag lever post 52 between positioning tool 51 and pressed seat 21 above mounting base 5, gag lever post 52 for pair
Extreme lower position in 24 decline process of compression bar is limited, and is avoided briquetting 241 from pushing and is excessively caused deformation to workpiece extruding, when
So, gag lever post 52 can be screw rod, you can be adjusted depending on the situation.
With reference to attached drawing 4, in addition, it is vertically arranged with positive stop end 511 in one end of the close pressing device 2 of positioning tool 51,
In the other end of rack 1, it is provided with horizontal clamping device 3.Horizontal clamping device 3 includes horizontal base 31, and horizontal base 31 is also set
It sets on guide post 111, the charging ram 32 driven by driver 33 is provided with above horizontal base 31,32 level of charging ram is set
It sets, face positive stop end 511, the other end of charging ram 32 is provided with driver 33.As a result, after driver 33 drives, push away
Expect 32 horizontal forward transport of bar, the clamping in horizontal direction is carried out to the workpiece on positioning tool 51.
Driver 33 and pusher 22 are preferentially adopted as oil cylinder in the present embodiment, naturally it is also possible to it is adopted as cylinder,
Driving can be played the role of.
Certainly, it can be provided with rubber block 34 in the end of charging ram 32, makes charging ram 32 after being contacted with workpiece, had
There is certain buffering capacity, workpiece caused by avoiding direct rigid contact deforms.Further, it is additionally provided in mounting base 5
Alignment block 53, is provided through alignment hole (not illustrated in figure) on alignment block 53, and alignment block 53 can be provided with multiple, push away
Expect that bar 32 passes through the alignment hole, the end of charging ram 32 can effectively be made to keep alignment, it will not sideslip.
It is to be further elaborated to the process of the vertical grinding machine of Double End below, workpiece is placed on positioning work first
It fills on 51, then drives driver 33, charging ram 32 is made to be drawn close to workpiece, after charging ram 32 and workpiece are contradicted,
Under the action of other side positive stop end 511, that is, realize the positioning in horizontal direction.Then, the piston of 2 pusher 22 of pressing device
Bar drives, and bull stick 23 is made to be rotated with pivotal point, i.e. the briquetting 241 of compression bar 24 rotates clockwise, and gradually declines, and finally contradicts and arrives work
It, can be to being clamped on vertical direction after part.After completing to clamp, pedestal is fed by mounting base 5,2 and of pressing device
Horizontal clamping device 3 synchronizes forwards transportation, until arriving Working position, the both ends of workpiece are ground by the grinding wheel 41 of grinding head device 4 simultaneously
It cuts, after grinding repeatedly, completes processing, reach high-precision requirement.
This specific embodiment is only explanation of the invention, is not limitation of the present invention, people in the art
Member can as needed make the present embodiment the modification of not creative contribution after reading this specification, but as long as at this
It is all protected by Patent Law in the right of invention.
Claims (9)
1. a kind of double-ended grinding machine, including rack (1), which is characterized in that the rack (1) includes：
Grinding attachment, including opposite disposed grinding head device (4) and in centre formed Working position；
Mounting base (5), for placing workpiece to be processed；
Horizontal clamping device (3) carries out clamping and positioning for being carried out to the workpiece being located in mounting base (5) in horizontal direction；
Pressing device (2) compresses workpiece and then carries out carrying out clamping and positioning on vertical direction；
Wherein, the feeding pedestal is used to mounting base (5) being delivered to Working position and is ground by grinding head device (4).
2. a kind of double-ended grinding machine according to claim 1, which is characterized in that the pressing device (2) includes pressed seat
(21), and the pusher with piston rod (22), the end of the piston rod are hinged with bull stick (23), bull stick (23) phase
To the other end be mutually pivotally connected with pressed seat (21), the bull stick (23) has compressed part, the pusher (22) driving
Piston rod movement makes bull stick (23) so that compressed part is pushed or is risen with pivotal point rotation in turn.
3. a kind of double-ended grinding machine according to claim 2, which is characterized in that the compressed part includes being in bull stick (23)
The compression bar (24) of angle and the briquetting (241) for being set to compression bar (24) end.
4. a kind of double-ended grinding machine according to claim 1, which is characterized in that the horizontal clamping device (3) includes water
Flat seat (31) is provided with the charging ram (32) driven by driver (33) on the horizontal base (31).
5. a kind of double-ended grinding machine according to claim 1, which is characterized in that the compression bar (24) is between pivotal point
Horizontal distance is L1, and the horizontal distance between the piston rod and the hinge joint and pivotal point of bull stick (23) is L2, and L1 ＜ L2.
6. a kind of double-ended grinding machine according to claim 1 to 5 any one, which is characterized in that the feeding pedestal is
It is arranged in rack (1) and through the roller screw (111) of Working position, the pressing device (2) and horizontal base (31) difference
Feeding pedestal is set to respect to the both sides of Working position, the pressing device (2) and horizontal base (31) are connected with ball screw
Dynamic, a stepper motor is drivingly connected with guide post (111).
7. a kind of double-ended grinding machine according to claim 1, which is characterized in that detachably installed on the mounting base (5)
There is a positioning tool (51), the width of the briquetting (241) and charging ram (32) is respectively less than the width of positioning tool (51).
8. a kind of double-ended grinding machine according to claim 8, which is characterized in that be provided with and be used on the mounting base (5)
Limit the gag lever post (52) of bull stick (23).
9. a kind of double-ended grinding machine according to claim 9, which is characterized in that the mounting base (5) fills with horizontal-clamping
It sets (3) and clamping device is connected and is moved synchronously with realizing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810489157.3A CN108436643A (en) | 2018-05-21 | 2018-05-21 | A kind of double-ended grinding machine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810489157.3A CN108436643A (en) | 2018-05-21 | 2018-05-21 | A kind of double-ended grinding machine |
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| CN108436643A true CN108436643A (en) | 2018-08-24 |
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ID=63204994
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| CN201810489157.3A Pending CN108436643A (en) | 2018-05-21 | 2018-05-21 | A kind of double-ended grinding machine |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109108757A (en) * | 2018-09-06 | 2019-01-01 | 宁波高新区意川汽车零部件有限公司 | A kind of tubular object extruding device |
| CN109352382A (en) * | 2018-11-14 | 2019-02-19 | 菲舍尔航空部件（镇江）有限公司 | L shape corner fittings milling clamping tooling |
| CN111037399A (en) * | 2019-12-26 | 2020-04-21 | 重庆新美鱼博洋铝业有限公司 | Synchronous processing equipment for two ends of aluminum alloy profile |
| CN111716177A (en) * | 2020-06-30 | 2020-09-29 | 莱州三力汽车配件有限公司 | High-precision double-sided numerical control grinding machine mechanism |
| CN114888691A (en) * | 2022-06-10 | 2022-08-12 | 肇庆高峰机械科技有限公司 | Numerical control reciprocating type verticality grinding machine and working method thereof |
| CN114918830A (en) * | 2022-06-13 | 2022-08-19 | 肇庆高峰机械科技有限公司 | Control system of numerical control reciprocating type verticality grinding machine |
| CN116252197A (en) * | 2023-04-04 | 2023-06-13 | 肇庆高峰机械科技有限公司 | Double-end-face grinding machine |
| CN116276388A (en) * | 2023-04-04 | 2023-06-23 | 山东富瑞工贸有限公司 | Valve sealing surface polishing equipment and process |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109108757A (en) * | 2018-09-06 | 2019-01-01 | 宁波高新区意川汽车零部件有限公司 | A kind of tubular object extruding device |
| CN109352382A (en) * | 2018-11-14 | 2019-02-19 | 菲舍尔航空部件（镇江）有限公司 | L shape corner fittings milling clamping tooling |
| CN111037399A (en) * | 2019-12-26 | 2020-04-21 | 重庆新美鱼博洋铝业有限公司 | Synchronous processing equipment for two ends of aluminum alloy profile |
| CN111716177A (en) * | 2020-06-30 | 2020-09-29 | 莱州三力汽车配件有限公司 | High-precision double-sided numerical control grinding machine mechanism |
| CN111716177B (en) * | 2020-06-30 | 2021-05-07 | 莱州三力汽车配件有限公司 | High-precision double-sided numerical control grinding machine mechanism |
| CN114888691A (en) * | 2022-06-10 | 2022-08-12 | 肇庆高峰机械科技有限公司 | Numerical control reciprocating type verticality grinding machine and working method thereof |
| CN114918830A (en) * | 2022-06-13 | 2022-08-19 | 肇庆高峰机械科技有限公司 | Control system of numerical control reciprocating type verticality grinding machine |
| CN116252197A (en) * | 2023-04-04 | 2023-06-13 | 肇庆高峰机械科技有限公司 | Double-end-face grinding machine |
| CN116276388A (en) * | 2023-04-04 | 2023-06-23 | 山东富瑞工贸有限公司 | Valve sealing surface polishing equipment and process |
| CN116276388B (en) * | 2023-04-04 | 2023-08-15 | 山东富瑞工贸有限公司 | Valve sealing surface polishing equipment and process |
| CN116252197B (en) * | 2023-04-04 | 2023-08-29 | 肇庆高峰机械科技有限公司 | Double-end-face grinding machine |
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