CN108857722B - Crankshaft connecting rod double-side grinding machine - Google Patents

Crankshaft connecting rod double-side grinding machine Download PDF

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Publication number
CN108857722B
CN108857722B CN201810814164.6A CN201810814164A CN108857722B CN 108857722 B CN108857722 B CN 108857722B CN 201810814164 A CN201810814164 A CN 201810814164A CN 108857722 B CN108857722 B CN 108857722B
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CN
China
Prior art keywords
workpiece
grinding
clamping
conveying
material moving
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Application number
CN201810814164.6A
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Chinese (zh)
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CN108857722A (en
Inventor
夏海涛
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Shanxi Jinguan Machinery Manufacturing Co.,Ltd.
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Yang Huazhen
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Priority to CN201810814164.6A priority Critical patent/CN108857722B/en
Publication of CN108857722A publication Critical patent/CN108857722A/en
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B24GRINDING; POLISHING
    • B24BMACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B19/00Single-purpose machines or devices for particular grinding operations not covered by any other main group
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B24GRINDING; POLISHING
    • B24BMACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B41/00Component parts such as frames, beds, carriages, headstocks
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B24GRINDING; POLISHING
    • B24BMACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B41/00Component parts such as frames, beds, carriages, headstocks
    • B24B41/06Work supports, e.g. adjustable steadies

Abstract

The invention relates to the field of crankshaft connecting rod processing equipment, in particular to a crankshaft connecting rod double-side grinding processing machine, wherein a material moving and overturning device is arranged between a first grinding device and a second grinding device, the first grinding device and the second grinding device respectively comprise a support frame, a workpiece clamping device, a positioning material moving device and a grinding machine device, the grinding machine and the workpiece clamping device are both arranged on the support frame, the workpiece clamping device is provided with a first workpiece clamping mould and a second workpiece clamping mould which can synchronously move in opposite directions or back to back in a linear direction, the novel crankshaft connecting rod double-side grinding processing machine is used, double-side grinding is carried out between the two sets of grinding devices in a workpiece overturning mode, wherein a workpiece feeding device, a workpiece clamping device and a workpiece discharging device are arranged, the workpieces only need to be clamped in sequence, the automatic clamping and unloading of the workpiece can be completed, and the working efficiency and the precision of the workpiece are greatly improved.

Description

Crankshaft connecting rod double-side grinding machine
Technical Field
The invention relates to the field of crankshaft connecting rod processing equipment, in particular to a crankshaft connecting rod bilateral grinding processing machine.
Background
The crankshaft connecting rod is an important part in mechanical equipment, so the requirement is very high during production, for example, the surfaces of two sides of two ends of the crankshaft connecting rod are ground, when manual machining is adopted, a workpiece is difficult to position, after the surface of one side is machined, the workpiece needs to be manually turned over for secondary positioning, the flatness of the workpiece is difficult to ensure, and the working efficiency of manual machining is low.
Disclosure of Invention
The invention aims to provide a crankshaft connecting rod bilateral grinding machine aiming at the defects of the prior art, which greatly improves the working efficiency, can ensure the positioning of a workpiece and ensures the plane precision of the machined crankshaft connecting rod bilateral.
In order to solve the above problems, the present invention provides the following technical solutions: the crankshaft connecting rod double-side grinding machine comprises a machine table, a workpiece feeding device, a material moving turnover device, a workpiece discharging device, a first grinding device and a second grinding device, wherein the workpiece feeding device, the material moving turnover device, the workpiece discharging device, the first grinding device and the second grinding device are arranged on the machine table, the material moving turnover device is arranged between the first grinding device and the second grinding device, the first grinding device and the second grinding device respectively comprise a support frame, a workpiece clamping device, a positioning material moving device and a grinding machine device, the grinding machine device and the workpiece clamping device are arranged on the support frame, the workpiece clamping device in the first grinding device is provided with a first workpiece clamping die capable of synchronously moving in a linear direction in a facing direction or in a back-to-back direction, the workpiece clamping device in the second grinding device is provided with a second workpiece clamping die capable of synchronously moving in a facing direction or in a back-to-back, The first positioning and conveying device is used for conveying workpieces between the first grinding device and the material moving and overturning device, the second grinding device is provided with a second positioning and conveying device which is used for conveying the workpieces between the material moving and overturning device, a grinding machine device in the second grinding device and a workpiece discharging device, the workpiece feeding device is provided with a workpiece temporary storage groove and the workpiece material moving device, and the workpiece discharging device is provided with a discharging device used for pushing out the processed workpieces and a material guide plate used for guiding the processed workpieces out of the workbench;
move material turning device and be equipped with pay-off track and conveying upset mould, pay-off track fixed mounting is on the board, the one end that the pay-off track is close to first grinding device is provided with the conveying feed inlet, the conveying feed inlet is equipped with the first dead slot that supplies first work piece to move material device and remove, the one end of first dead slot is equipped with the third cylinder, the one end that the pay-off track is close to second grinding device is equipped with the conveying discharge gate, the output and the discharge gate extending direction level of third cylinder set up, be equipped with first push pedal on the ejector pin of third cylinder, the conveying discharge gate is equipped with the second dead slot that supplies the second work piece to move material device and remove, be equipped with the third dead slot that is used for moving material turning device horizontal upset between first dead slot and the second dead slot, it installs and is linked with pay-off track inside wall swing joint.
Preferably, move material turning device and be equipped with pay-off box and revolving cylinder, the pay-off box is opened for one end, the end of opening of pay-off box is for advancing the discharge gate, the pay-off box is located to open the end and is equipped with outside first bottom plate and the second bottom plate that extends, is equipped with the second push pedal in the pay-off box, the other end that opens the end of pay-off box is equipped with the fourth cylinder, the ejector pin of fourth cylinder is deepened in the pay-off box with second push pedal fixed connection, the lateral wall of pay-off box and revolving cylinder's output fixed connection.
Has the advantages that: this use neotype two side grinding machine of crankshaft connecting rod adopts the mode of upset work piece to carry out two sides and polishes between two sets of grinding device, wherein disposes work piece loading attachment, work piece clamping device and work piece unloader, and the work piece only needs the clamping in proper order, can accomplish the automatic clamping of work piece and unload, has promoted the precision of work efficiency and work piece greatly.
Drawings
FIG. 1 is a first perspective view of the present invention;
FIG. 2 is a schematic perspective view of the present invention;
FIG. 3 is a top view of the present invention;
FIG. 4 is a schematic perspective view of the workpiece clamping device of the present invention;
FIG. 5 is a schematic perspective view of a first positioning conveyor and a second positioning conveyor according to the present invention;
FIG. 6 is a schematic perspective view of the material transferring and turning device of the present invention;
FIG. 7 is a third schematic perspective view of the present invention;
FIG. 8 is an enlarged partial schematic view of the invention at A in FIG. 7;
FIG. 9 is a schematic perspective view of a first and second grinding apparatus of the present invention;
description of reference numerals: the machine table 1, the first grinding device 2, the second grinding device 3, the workpiece clamping device 100, the feeder 101, the clamper 102, the support frame 4, the first workpiece clamping fixture 103, the second workpiece clamping fixture 104, the second air cylinder 106, the stop block 107, the resistance spring 108, the first positioning conveyer 300, the second positioning conveyer 400, the workpiece holder 301, the positioning column fixture 302, the first screw rod transmission device 303, the sliding table 304, the first air cylinder 305, the material moving turning device 500, the feeding track 501, the feeding box 503, the conveying feed inlet 504, the conveying discharge outlet 505, the third air cylinder 506, the rotating air cylinder 507, the first push plate 508, the first empty groove 509, the second empty groove 510, the third empty groove 511, the discharge outlet 513, the first bottom plate 514, the second bottom plate 515, the second push plate 516, the fourth air cylinder 517, the workpiece temporary storage groove 900, the first baffle 902, the second baffle 903, the fifth air cylinder 904, the sixth air cylinder 905, a conveying box 906, a third push plate 907, a grinding motor 700, a drum-type grinding wheel 701, a movable frame 702, a second screw transmission device 703, a third screw transmission device 704, a seventh air cylinder 800 and a fourth push plate 801.
Detailed Description
The following detailed description of specific embodiments of the present invention is made with reference to the accompanying drawings and examples:
referring to fig. 1 to 9, a crankshaft connecting rod double-side grinding machine includes a machine table 1, a workpiece feeding device, a material moving and turning device 500, a workpiece discharging device, a first grinding device 2 and a second grinding device 3, which are mounted on the machine table 1, the material moving and turning device 500 is mounted between the first grinding device 2 and the second grinding device 3, each of the first grinding device 2 and the second grinding device 3 includes a support frame 4, a workpiece clamping device 100, a positioning and material moving device and a grinding machine device, each of the grinding machine device and the workpiece clamping device 100 is mounted on the support frame 4, the workpiece clamping device 100 in the first grinding device is provided with a first workpiece clamping mold capable of moving synchronously in a straight line direction or oppositely, the workpiece clamping device 100 in the second grinding device is provided with a second workpiece clamping mold capable of moving synchronously in a straight line direction or oppositely, the positioning and material moving device in the first grinding device 2 is provided with a first positioning and conveying device 300 for conveying workpieces among the workpiece feeding device, the first grinding device and the material moving and overturning device 500, the second grinding device 3 is provided with a second positioning and conveying device 400 for conveying workpieces among the material moving and overturning device 500, the grinding device in the second grinding device 3 and the workpiece discharging device, the workpiece feeding device is provided with a workpiece temporary storage tank 900 and a workpiece moving device, and the workpiece discharging device is provided with a discharging device for pushing out the processed workpieces and a guide plate for guiding the processed workpieces out of the workbench.
The first positioning and conveying device 300 and the second positioning and conveying device 400 are provided with a workpiece frame 301, a positioning column die and a first screw rod transmission device 303, the positioning column die further comprises a first air cylinder 305 and a positioning column jig 302, the first air cylinder 305 is fixedly installed in the workpiece frame 301, the positioning column jig 302 is fixedly installed at the output end of the first air cylinder 305, the upper surface of the workpiece frame 301 is provided with a first through hole for enabling the positioning column jig 302 to move up and down, the lower end of the workpiece frame 301 is provided with a sliding table 304, and the movable end of the first screw rod transmission device 303 is fixedly connected with one side of the workpiece frame 301. When a workpiece needs to enter a feeding state in the positioning and material moving device, the first air cylinder 305 drives the positioning column jig 302 to compound, even if the upper surface of the workpiece frame 301 is a workpiece table for placing the workpiece, when the workpiece is placed on the upper surface, the air cylinder in the workpiece frame 301 drives the positioning column jig 302 to move upwards, the positioning column jig 302 is in sliding fit with two round holes of a product crankshaft connecting rod, the feeding state comprises that the workpiece feeding device sends the workpiece to the first positioning and conveying device, the workpiece processed on the first positioning and conveying device 300 needs to be sent to the material moving and overturning device 500, the material moving and overturning device 500 sends the overturned workpiece to the second positioning and conveying device, and the workpiece processed by the second positioning and conveying device sends the workpiece to the workpiece discharging device for discharging.
The first workpiece clamping die and the second workpiece clamping die respectively comprise a horizontally symmetrical feeder 101 and a horizontally symmetrical and reversely arranged clamp 102, the clamp 102 is detachably arranged at the output end of the feeder 101, and the feeder 101 is fixedly arranged on the support frame 4. When the positioning and conveying device conveys the workpiece between the first workpiece clamping die and the second workpiece clamping die, the clamper 102 synchronously performs clamping movement of the workpiece by the feeder 101.
The clamping device 102 includes a first clamping device and a second clamping device, the second clamping device is hollow and has an open end, the other end of the second clamping device is provided with a second through hole, and the first clamping device is sleeved in the second clamping device. The height of the clamping device 102 is smaller than that of the workpiece, and two clamping tools are arranged to ensure the stability of the processing and positioning of the workpiece, wherein the first clamping tool can fix the workpiece in position first, and then the workpiece is accurately positioned through the second clamping tool.
The feeder 101 comprises a second air cylinder 106, a blocking block 107 and a resistance spring 108, wherein an ejector rod of the second air cylinder 106 passes through the second through hole to be detachably connected with the first clamping jig, the blocking block 107 is installed on the ejector rod of the second air cylinder 106 close to the second clamping jig, and the resistance spring 108 is installed between the second clamping jig and the blocking block 107. When the second clamping fixture moves in a clamping manner, a small return force is generated, and the resistance spring 108 cooperates with the first clamping fixture to move in a return force manner.
Move material turning device 500 and be equipped with pay-off track 501 and conveying upset mould, pay-off track 501 fixed mounting is on board 1, the one end that pay-off track 501 is close to first grinding device 2 is provided with conveying feed inlet 504, conveying feed inlet 504 is equipped with the first dead slot 509 that supplies first location conveyer to remove, the one end of first dead slot 509 is equipped with third cylinder 506, the one end that pay-off track 501 is close to second grinding device 3 is equipped with conveying discharge gate 505, the output and the discharge gate extending direction level of third cylinder 506 set up, be equipped with first push pedal 508 on the ejector pin of third cylinder 506, conveying discharge gate 505 is equipped with the second dead slot 510 that supplies second location conveyer to remove, be equipped with the third dead slot 511 that is used for moving material turning device 500 horizontal upset between first dead slot 509 and the second dead slot 510, it installs in third dead slot 511 and is linked with pay-off track 501 inside wall activity. When the positioning and conveying device conveys the workpiece to the conveying feed inlet 504 of the material moving and overturning device 500, the first cylinder 305 in the first positioning and conveying device drives the positioning column jig 302 to compound, and the first push plate 508 pushes the workpiece to the material moving and overturning device 500 through the ejector rod of the cylinder to perform overturning motion.
Move material turning device 500 and be equipped with pay-off box 503 and revolving cylinder 507, pay-off box 503 is that one end is opened, the end of opening of pay-off box 503 is for advancing discharge port 513, pay-off box 503 is located to open the end and is equipped with outside first bottom plate 514 and the second bottom plate 515 that extend, be equipped with second push pedal 516 in the pay-off box 503, the other end of the end of opening of pay-off box 503 is equipped with fourth cylinder 517, the ejector pin of fourth cylinder 517 deepens to pay-off box 503 in with second push pedal 516 fixed connection, the lateral wall of pay-off box 503 and revolving cylinder 507's output fixed connection. After the workpiece is turned over by the material moving and turning device 500, the second push plate 516 pushes the workpiece in the feeding box 503 to the second positioning and conveying device 400 through the third air cylinder 506, so as to grind the other side of the workpiece.
The workpiece feeding device is provided with a workpiece temporary storage groove 900 and a workpiece material moving device, the workpiece temporary storage groove 900 is fixedly installed on the machine table 1, one side, close to the first grinding device 2, of the workpiece temporary storage groove 900 is provided with a first baffle 902, the workpiece material moving device comprises a fifth air cylinder 904, a sixth air cylinder 905 and a conveying material box 906, the sixth air cylinder 905 is fixedly installed on the machine table 1 through a support, an ejector rod of the sixth air cylinder 905 is fixedly connected with the conveying material box 906, one end, facing the workpiece temporary storage groove 900, of the conveying material box 906 is open, the side face of the conveying material box 906 is provided with a second baffle 903, the fifth air cylinder 904 is arranged at the other end, the two side walls of the fifth air cylinder 904 are fixedly connected with the conveying material box 906 through supports, a third push plate 907 is arranged in the conveying material box 906, and the ejector rod of the fifth air cylinder 904 is fixedly connected. When the workpieces on the workpiece temporary storage groove 900 are conveyed to the conveying material box 906, the conveying material box 906 is butted with the first positioning conveying device 300 through the ejector rod by the fifth air cylinder 904, the third push plate 907 is driven to push the workpieces in the conveying material box 906 into the first positioning conveying device 300 from the open end for positioning and conveying, the second baffle 903 of the conveying material box 906 blocks the workpieces in the workpiece temporary storage groove 900, and then the ejector rod of the fifth air cylinder 904 drives the conveying material box 906 to reset.
The grinding machine device is provided with a movable frame 702, a second screw rod transmission device 703, a third screw rod transmission device 704 and a roller type grinding machine, the second screw rod transmission device 703 and the third screw rod transmission device 704 are horizontally and symmetrically fixedly arranged on a support frame 4, two ends of the movable frame 702 are fixedly arranged on movable blocks of the second screw rod transmission device 703 and the third screw rod transmission device 704, the roller type grinding machine is provided with a grinding motor 700 and a roller type grinding wheel 701, the grinding motor 700 is fixedly arranged on the upper surface of the movable frame 702, the roller type grinding wheel 701 is fixedly arranged on the lower surface of the movable frame 702, and the roller surface of the roller type grinding wheel 701 and a machine table 1 are in a horizontal state. The synchronizing wheel on the grinding motor 700 is matched with the synchronizing wheel on the roller type grinding wheel 701 through a synchronizing leather link, when a workpiece is conveyed to the workpiece clamping device 100 to be accurately positioned, the roller type grinding wheel 701 of the roller type grinding machine accurately positions the grinding distance of the workpiece, and the second screw rod transmission device 703 and the third screw rod transmission device 704 on the supporting frame 4 synchronously carry out Z, Y-direction reciprocating motion on the roller type grinding machine, so that the surface of the workpiece which is accurately positioned is subjected to reciprocating grinding.
The discharging device is provided with a seventh cylinder 800 and a fourth push plate 801, an ejector rod of the seventh cylinder 800 is fixedly connected with the fourth push plate 801, and the seventh cylinder 800 is fixedly installed on the machine table 1 through a support. When the second positioning and conveying device conveys the processed workpiece to be in butt joint with the fourth push plate 801, the first cylinder 305 in the second positioning and conveying device 400 drives the positioning column jig 302 to compound, and the fourth push plate 801 driven by the seventh cylinder 800 pushes the workpiece from the second positioning and conveying device 400 to the material guide plate outside the workbench.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the technical scope of the present invention, so that any minor modifications, equivalent changes and modifications made to the above embodiment according to the technical spirit of the present invention are within the technical scope of the present invention.

Claims (1)

1. The crankshaft connecting rod double-side grinding machine comprises a machine table (1), a workpiece feeding device, a material moving turnover device (500), a workpiece discharging device, a first grinding device (2) and a second grinding device (3), wherein the workpiece feeding device, the material moving turnover device (500), the workpiece discharging device, the first grinding device (2) and the second grinding device (3) are installed on the machine table (1), the material moving turnover device (500) is installed between the first grinding device (2) and the second grinding device (3), the first grinding device (2) and the second grinding device (3) respectively comprise a support frame (4), a workpiece clamping device (100), a positioning material moving device and a grinding machine device, the grinding machine device and the workpiece clamping device (100) are both installed on the support frame (4), the workpiece feeding device is provided with a workpiece temporary storage groove and a workpiece material moving device, and the workpiece discharging device for pushing out a machined workpiece and a guide plate for guiding the machined workpiece;
the method is characterized in that: the positioning and material moving device in the first grinding device (2) is provided with a first positioning and conveying device (300) for conveying the workpiece among the workpiece feeding device, the first grinding device and the material moving and overturning device (500), and the second grinding device (3) is provided with a second positioning and conveying device (400) for conveying the workpiece among the material moving and overturning device (500), the grinding device in the second grinding device (3) and the workpiece discharging device;
the workpiece clamping device (100) in the first grinding device is provided with a first workpiece clamping die capable of synchronously moving towards or away from each other in the linear direction, and the workpiece clamping device (100) in the second grinding device is provided with a second workpiece clamping die capable of synchronously moving towards or away from each other in the linear direction; the first workpiece clamping die and the second workpiece clamping die respectively comprise a horizontally symmetrical feeder (101) and horizontally symmetrical oppositely-arranged clamping devices (102), the clamping devices (102) are detachably mounted at the output end of the feeder (101), and the feeder (101) is fixedly mounted on the support frame (4); the clamping device (102) comprises a first clamping jig and a second clamping jig, wherein the second clamping jig is hollow, one end of the second clamping jig is open, a second through hole is formed in the other end of the second clamping jig, and the first clamping jig is sleeved in the second clamping jig; the feeder (101) comprises a second air cylinder (106), a blocking block (107) and a resistance spring (108), an ejector rod of the second air cylinder (106) penetrates through a second through hole to be detachably connected with the first clamping jig, the blocking block (107) is installed on the ejector rod of the second air cylinder (106) close to the second clamping jig, and the resistance spring (108) is installed between the second clamping jig and the blocking block (107);
the material moving and overturning device (500) is provided with a feeding rail (501) and a conveying and overturning die, the feeding rail (501) is fixedly installed on the machine table (1), one end, close to the first grinding device (2), of the feeding rail (501) is provided with a conveying feeding hole (504), the conveying feeding hole (504) is provided with a first empty groove (509) for the first workpiece material moving device to move, one end of the first empty groove (509) is provided with a third air cylinder (506), one end, close to the second grinding device (3), of the feeding rail (501) is provided with a conveying discharging hole (505), the output end of the third air cylinder (506) is horizontally arranged with the extending direction of the discharging hole, a top rod of the third air cylinder (506) is provided with a first push plate (508), the conveying discharging hole (505) is provided with a second empty groove (510) for the second workpiece material moving device to move, and a third empty groove (511) for the horizontal overturning of the material moving and overturning device (500) is arranged between the first empty groove (509) and the second, the material moving and turning device (500) is arranged in the third empty groove (511) and movably linked with the inner side wall of the feeding track (501);
the material moving and turning device (500) is provided with a feeding box (503) and a rotary cylinder (507), one end of the feeding box (503) is open, the open end of the feeding box (503) is a feeding and discharging port (513), the feeding box (503) is provided with a first bottom plate (514) and a second bottom plate (515) which extend outwards at the open end, a second push plate (516) is arranged in the feeding box (503), the other end of the open end of the feeding box (503) is provided with a fourth cylinder (517), an ejector rod of the fourth cylinder (517) extends into the feeding box (503) and is fixedly connected with the second push plate (516), and the side wall of the feeding box (503) is fixedly connected with the output end of the rotary cylinder (507);
the first positioning and conveying device (300) and the second positioning and conveying device (400) are respectively provided with a workpiece frame (301), a positioning column die and a first screw rod transmission device (303), the positioning column die further comprises a first air cylinder (305) and a positioning column jig (302), the first air cylinder (305) is fixedly arranged in the workpiece frame (301), the positioning column jig (302) is fixedly arranged at the output end of the first air cylinder (305), the upper surface of the workpiece frame (301) is provided with a first through hole for the vertical movement of the positioning column jig (302), the lower end of the workpiece frame (301) is provided with a sliding table (304), and the movable end of the first screw rod transmission device (303) is fixedly connected with one side of the workpiece frame (301); the upper surface of the workpiece rack (301) is a workpiece table for placing workpieces, when the workpieces are placed on the upper surface, a first cylinder in the workpiece rack (301) drives the positioning column jig (302) to move upwards, and the positioning column jig (302) is in sliding fit with two round holes of a product crankshaft connecting rod.
CN201810814164.6A 2018-07-23 2018-07-23 Crankshaft connecting rod double-side grinding machine Active CN108857722B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201810814164.6A CN108857722B (en) 2018-07-23 2018-07-23 Crankshaft connecting rod double-side grinding machine

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Application Number Priority Date Filing Date Title
CN201810814164.6A CN108857722B (en) 2018-07-23 2018-07-23 Crankshaft connecting rod double-side grinding machine

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CN108857722B true CN108857722B (en) 2020-12-15

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Publication number Priority date Publication date Assignee Title
CN110788366A (en) * 2019-11-28 2020-02-14 安徽枫雅轩科技信息服务有限公司 Crankshaft connecting rod drilling device

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107052956A (en) * 2017-01-23 2017-08-18 张必葵 A kind of arc locking face Twp-sided polishing machine

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN207289528U (en) * 2017-10-18 2018-05-01 仪征常众汽车部件有限公司 A kind of automobile crane processing fixing device

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107052956A (en) * 2017-01-23 2017-08-18 张必葵 A kind of arc locking face Twp-sided polishing machine

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Effective date of registration: 20211223

Address after: 044600 No. 108, Yongle South Road, Guwei Town, Ruicheng County, Yuncheng City, Shanxi Province

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