CN113894309B - Method for drilling holes in pump body - Google Patents
Method for drilling holes in pump body Download PDFInfo
- Publication number
- CN113894309B CN113894309B CN202111277808.0A CN202111277808A CN113894309B CN 113894309 B CN113894309 B CN 113894309B CN 202111277808 A CN202111277808 A CN 202111277808A CN 113894309 B CN113894309 B CN 113894309B
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- China
- Prior art keywords
- pump body
- hole
- positioning
- mounting hole
- excircle
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B35/00—Methods for boring or drilling, or for working essentially requiring the use of boring or drilling machines; Use of auxiliary equipment in connection with such methods
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B49/00—Measuring or gauging equipment on boring machines for positioning or guiding the drill; Devices for indicating failure of drills during boring; Centering devices for holes to be bored
- B23B49/02—Boring templates or bushings
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q3/00—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine
- B23Q3/02—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine for mounting on a work-table, tool-slide, or analogous part
- B23Q3/06—Work-clamping means
- B23Q3/08—Work-clamping means other than mechanically-actuated
Abstract
The invention relates to a method for drilling a pump body, which comprises the steps of positioning and fixing a pump body, drilling a hole by a drill bit to form a mounting hole on a mounting plate of the pump body, sleeving an excircle of the head of the pump body into a positioning hole of a positioning plate to be matched and positioned in the positioning process, applying pressure to the tail of the pump body to be matched and pre-tightened to ensure that the mounting plate of the pump body is leant against the positioning plate, rotating the pump body in the pre-tightening state, aligning and clamping the pump body in the process of clamping the excircle of a blank of an oil cup hole of the pump body from two sides in the pre-tightening state, positioning the pump body, aligning and clamping, further applying pressure to the tail of the pump body to be matched and tightly pressed on the positioning plate to form a fixed position, and drilling the mounting hole in the pressing state, thereby machining the mounting hole on the mounting plate of the pump body. The phenomenon of center dislocation of the mounting hole and the mounting hole blank after machining is avoided, and the product performance and the product appearance are ensured.
Description
Technical Field
The invention relates to pump body processing, in particular to a processing method of an installation hole and an oil cup hole on a pump body.
Background
The pump body (such as automobile parts like a clutch pump, a brake pump and the like) is provided with a cylinder hole, an oil cup hole and the like, the port of the cylinder hole of the pump body is a head excircle, in addition, the pump body is provided with a mounting plate, the mounting plate is provided with a mounting hole forming flange structure for connection, and the mounting hole is processed into a mounting hole in a drilling mode; the mounting hole and the oil cup hole have strict position relation, the mounting hole is firstly processed in the processing process arrangement, and then the oil cup hole is processed by taking the mounting hole as a positioning reference so as to ensure the position relation between the mounting hole and the oil cup hole. The pump body blank is manufactured by adopting a casting process, and the cast blank has the phenomena of mould dislocation, deformation, different sizes and the like; when the mounting hole is machined, the mounting hole machined by positioning the outer circle of the head of the pump body and the side surface (namely blank surface) of the mounting plate or the outer circle of the single side of the oil cup hole blank can have a dislocation phenomenon with the outer circle of the oil cup hole blank, so that the defects of serious uneven wall thickness or hole breakage and the like of the oil cup hole are caused, the appearance of a product is slightly influenced, and the product is seriously scrapped or leaked after being loaded and used, so that the function of the product is disabled.
Disclosure of Invention
In view of the technical problems in the background art, the technical problem to be solved by the present invention is to provide a method for drilling a pump body. The pump body is positioned and fixed, wherein the excircle of the head part of the pump body and the excircle of the blank of the oil cup hole of the pump body are utilized for positioning, the phenomenon of center dislocation of the mounting hole and the blank of the oil cup hole after processing is avoided, and the product performance and the product appearance are ensured.
In order to solve the technical problems, the invention adopts the following technical scheme: the method for drilling the pump body comprises the steps of firstly positioning and fixing the pump body, then drilling through a drill bit to machine a mounting hole in a mounting plate of the pump body, wherein in the positioning and fixing process, the outer circle of the head of the pump body is sleeved into the positioning hole of the positioning plate to be matched and positioned, and the tail of the pump body is pressed and matched to pre-tighten the pump body, so that the mounting plate of the pump body is leaned against the positioning plate through pre-tightening, the pump body can be rotated in the pre-tightening state, the pump body is aligned and clamped in the process of clamping the outer circle of a blank of an oil cup hole of the pump body from two sides in the pre-tightening state, the positioning of the pump body is completed, after the alignment and clamping are completed, the tail of the pump body is further pressed and matched to tightly press the pump body at a fixed position on the positioning plate, and the pump body is subjected to mounting hole drilling operation in the pressing state, so that the mounting hole is machined in the mounting plate of the pump body. In the method, in the process of positioning and fixing the pump body, the excircle of the head of the pump body and the excircle (two sides) of the blank of the oil cup hole of the pump body are utilized for positioning, wherein the tail of the pump body is pre-jacked (namely pre-tightened), so that the side surface of a mounting plate of the pump body is attached to the plane of a positioning plate, then the two sides of the excircle of the blank of the oil cup hole of the pump body are aligned and clamped, and then the tail of the pump body is jacked tightly, so that the phenomenon that the center of the mounting hole is staggered with the center of the blank of the mounting hole after processing can be avoided through the alignment and positioning of the two sides, and the product performance and the product appearance are ensured.
The following optimization or supplementary explanation can be performed on the above technical solutions.
For example, in the fixed in-process of location, the port of pump body head excircle is up, and pump body afterbody is down, from up exerting pressure to the pump body down at the pump body afterbody, and the locating plate is located the top, and the pump body is from down during up emboliaing the locating hole of locating plate, and the drill bit drills out the mounting hole from the locating plate top down, and the drill bit drills out the mounting hole at the mounting panel of the pump body. The operation is convenient, the pump body is convenient to be positioned and fixed in the positioning and fixing process, and the position of the pump body is stable after the positioning and fixing process.
And optimizing, wherein the drill bit penetrates through the drill bushing on the positioning plate to drill a hole in the mounting plate of the pump body. The drill bit operates stably, the position of the mounting hole is accurate, and the inner wall of the mounting hole is neat and is not easy to deviate.
For another example, one cylinder is used as power to apply pressure to the pump body at the tail part of the pump body for pre-tightening and pressing, and the other cylinder is used as power to drive the left chuck and the right chuck to clamp and loosen the excircle of the blank of the oil cup hole of the pump body. The cylinder assembly and control technology is mature, and the air pressure of the cylinder can be adjusted, and the pre-tightening, pressing and clamping forces can be adjusted.
For another example, after the mounting holes on the mounting plate of the pump body are machined and manufactured, the pump body is positioned and fixed according to the excircle of the head of the pump body and the mounting holes, and then the oil cup holes are manufactured. The machining and manufacturing of the mounting hole and the machining and manufacturing of the oil cup hole are matched with each other, and mutual positioning effects exist in the two processes, so that the center dislocation quantity of the outer circle of the oil cup hole and the blank of the oil cup hole can be effectively reduced, the defect that the wall thickness of the oil cup hole is seriously uneven is avoided, and the product performance and the product appearance are ensured.
The invention has the beneficial effects that:
1. when the pump body mounting hole is machined, the pump body is positioned by the excircle of the head of the pump body and two sides of the excircle of the oil cup hole blank, the pump body is pre-jacked from the tail part, the pump body mounting surface is made to be attached to the plane of the positioning plate, then two sides of the excircle of the oil cup hole blank of the pump body are aligned and clamped, then the pump body is jacked from the tail part, the phenomenon that the machined mounting hole and the mounting hole blank are staggered in the center can be avoided through the alignment and positioning of the two sides of the mounting hole, and the product performance and the product appearance are ensured;
2. the two processes have mutual positioning effect, so that the center dislocation quantity of the oil cup hole and the excircle of the oil cup hole blank can be effectively reduced, the defect of serious non-uniform thickness of the wall of the oil cup hole is avoided, and the product performance and the product appearance are ensured.
Therefore, compared with the prior art, the invention has outstanding substantive features and remarkable progress.
Drawings
The following describes the details and working principles of the embodiments and examples of the present invention with reference to the accompanying drawings.
FIG. 1 is a schematic view of a pump body and a positioning support clamping mark of the pump body during machining of a mounting hole in the embodiment of the invention.
Fig. 2 is a view from a in fig. 1.
FIG. 3 is a schematic view of the positioning, supporting and clamping marks of the pump body and the oil cup hole during machining in the embodiment of the invention.
Fig. 4 is a schematic structural diagram of a clamping device according to an embodiment of the present invention.
Fig. 5 is a schematic view of a part B in fig. 4.
Fig. 6 is a schematic top view of the structure of fig. 4.
FIG. 7 is a schematic diagram of the pneumatic control connection of the cylinder according to an embodiment of the present invention.
In the figure: 2. positioning a plate; 3. positioning holes; 4. the outer circle of the head part; 5. drilling a sleeve; 8. a top rod; 9. jacking an actuator; 11. a left chuck; 12. a right chuck; 13. a first cylinder; 15. pre-tightening the pressure regulating valve; 16. pre-tightening the electromagnetic valve; 17. compressing the pressure regulating valve; 18. compressing the electromagnetic valve; 19. a controller; 20. a second cylinder; 21. clamping the pressure regulating valve; 22. clamping the electromagnetic valve; 30. a pump body; 31. mounting holes; 32. mounting a plate; 33. an outer circle of the oil cup hole blank; 34. an oil cup hole; 35 air source.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention; it should be apparent that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and all other embodiments obtained by those skilled in the art without any inventive work based on the embodiments of the present invention belong to the protection scope of the present invention.
Referring to the drawings, in the embodiment of the present invention, in the method for drilling the pump body, the pump body 30 is positioned and fixed, and then the mounting hole 31 is drilled on the mounting plate 32 of the pump body 30 by using a drill, so as to avoid the misalignment between the mounting hole 31 and the blank center of the mounting hole 31 after machining, and ensure the product performance and the product appearance. When the mounting hole 31 is manufactured, in the process of positioning and fixing the pump body 30, the excircle 4 at the head of the pump body 30 is sleeved into the positioning hole 3 of the positioning plate 2 for matching and positioning, and the tail of the pump body 30 is pressed and matched to pre-tighten the pump body 30, the pre-tightening enables the mounting plate 32 of the pump body 30 to lean against the positioning plate 2, the pump body 30 can be rotated under the pre-tightening state so as to be aligned subsequently, the pump body 30 is aligned and clamped in the process of clamping the excircle 33 of the oil cup hole blank of the pump body 30 from two sides under the pre-tightening state, the positioning of the pump body 30 is completed, after the alignment and clamping, the tail of the pump body 30 is further pressed and matched to tightly press the pump body 30 on the positioning plate 2 for fixing, and the mounting hole 31 is drilled on the pump body 30 under the pressing state.
According to the method for processing the drilled holes in the pump body, the mounting holes 31 in the mounting plate 32 of the pump body 30 are processed through drilling, in the process of positioning and fixing the pump body 30, the excircle 4 of the head of the pump body 30 and the excircle 33 (two sides) of the blank of the oil cup hole of the pump body 30 are used for positioning, wherein the tail of the pump body 30 is pre-jacked (namely pre-tightened) to press, so that the side surface of the mounting plate 32 of the pump body 30 is attached to the plane of the positioning plate 2, then the two sides of the excircle 33 of the blank of the oil cup hole of the pump body 30 are aligned and clamped, and then the tail of the pump body 30 is jacked (pressed), and as parting surfaces are not arranged on the two sides of the excircle 33 of the blank of the oil cup hole of the pump body 30, the phenomena of mold dislocation, deformation, multiple materials and the like do not exist, so that the phenomenon of dislocation between the processed mounting holes 31 and the center of the blank of the mounting holes 31 can be avoided through the alignment and the product performance and the product appearance can be ensured.
The following optimization or further explanation can be made on the basis of the above embodiment.
For example, the pump body 30 is at the fixed in-process in location, and the port of pump body 30 head excircle 4 is up, and pump body 30 afterbody is down, pushes up the pump body 30 and exerts pressure from up down at the pump body 30 afterbody, and locating plate 2 is located the top, and during pump body 30 emboliaed locating hole 3 of locating plate 2 from up down, locating hole 3 can adopt the round hole comparatively stable, and the drill bit drills out mounting hole 31 from 2 tops of locating plate down, and the drill bit drills out at the mounting panel 32 of the pump body 30. The relative position is reasonable, and the axis in the jar hole of the pump body 30 is vertical setting, convenient operation, and the placing of the pump body 30 makes things convenient for the pump body 30 to be fixed by location among the fixed process of location, and the fixed back pump body 30 position of location is stable.
And optimally, the drill bit penetrates through the drill sleeve 5 on the positioning plate 2 to drill the mounting plate 32 of the pump body 30. The drill bit operation is stable, and mounting hole 31 position is accurate, and the neat difficult inclined to one side in mounting hole 31 inner wall. So that the drill bit passes through the drill bushing 5 to drill the mounting plate 32 to form the mounting hole 31, the drill bushing 5 is matched to determine the position of the processed hole on the workpiece, the rigidity of the drill bit is improved in the processing process, the vibration in the processing process is prevented, and the drill bushing 5 is used for guiding and positioning the drill bit when the mounting hole 31 is drilled.
For another example, one cylinder (referred to as a first cylinder 13 for distinction) is used as power to press the pump body 30 at the tail part of the pump body 30 for pre-tightening and pressing, and the other cylinder (referred to as a second cylinder 20 for distinction) is used as power to drive the left chuck 11 and the right chuck 12 to clamp and loosen the outer circle 33 of the blank oil cup hole of the pump body 30. The cylinder assembly and control technology is mature, and the air pressure of the cylinder can be adjusted, and the pre-tightening, pressing and clamping forces can be adjusted. The operation of each cylinder may be controlled by a controller 19 (e.g., a PLC controller).
For example, the first air cylinder 13 is matched with the lifting action of the ejector rod 8 to realize pre-tightening and jacking. The first cylinder 13 is provided with a first reversing valve 16, the piston rod of the first cylinder 13 is controlled to extend and retract by the first reversing valve 16, the first reversing valve 16 is connected with a pre-tightening pressure regulating valve 15 (which may be a manual pressure regulating valve), the air pressure can be adjusted by the pre-tightening pressure regulating valve 15 for adjusting the pre-tightening force of the first cylinder 13, and the pre-tightening pressure regulating valve 15 is connected with an air source 35 (such as an air pump). The pre-tightening pressure regulating valve 15 is connected with a pressing pipeline in parallel, a pressing electromagnetic valve 18 and a pressing pressure regulating valve 17 (which can be a manual pressure regulating valve) are arranged on the pressing pipeline, the pressing electromagnetic valve 18 can be opened or closed to enable the pressing pipeline to be communicated or cut off, the first air cylinder 13 is switched from a pre-tightening state to a pressing state after the pressing electromagnetic valve 18 is opened, and can be switched from the pressing state to the pre-tightening state after the pressing electromagnetic valve is closed; the pressure regulating valve 17 can adjust the air pressure, so that the pressing force of the first cylinder 13 can be adjusted in a matching manner when the communication of the pressing pipeline is opened. The first direction valve 16 and the pinch solenoid valve 18 are respectively coupled to a controller 19 (e.g., a PLC controller), and the controller 19 is configured to control the operation of the first direction valve 16 and the operation of the pinch solenoid valve 18. And is thus used by the controller 19 to control the operation of the tightening device 6. The controller 19 controls the technology to be relatively mature. Can cooperate 2 pairs of pump bodies 30 of locating plate to realize the switching of pretension state and compression state, the state switches conveniently, and the on-off switch of pretension and compression, switch and pressure size homoenergetic moreover can make things convenient for regulation and control.
For another example, the second cylinder 20 cooperatively drives the left chuck 11 and the right chuck 12 to cooperatively clamp. The second cylinder 20 is provided with a second direction valve 22, and the second direction valve 22 is used for controlling the clamping or unclamping action of the second cylinder 20. The second reversing valve 22 is connected in series with a clamping pressure regulating valve 21 (which may be a manual pressure regulating valve), and the clamping pressure regulating valve 21 is connected with an air source 35 (such as an air pump); the clamping pressure regulating valve 21 is used for adjusting the clamping force of the second cylinder 20. The second direction valve 22 is connected to a controller 19 (e.g., a PLC controller), and the controller 19 may be shared or configured separately, and the control technology is relatively mature. The clamping on-off switch, the switching and the pressure can be conveniently adjusted and controlled. The second cylinder 20 can adopt a single cylinder (or double-acting cylinder) or two cylinders to respectively drive the left chuck 11 and the right chuck 12 to be separated and folded, and the clamping and the loosening actions are realized in a matching way.
For another example, after the mounting hole 31 on the mounting plate 32 of the pump body 30 is machined, the pump body 30 is positioned and fixed according to the outer circle 4 of the head of the pump body 30 and the mounting hole 31, so that the oil cup hole 34 is formed in the pump body 30. The processing preparation of mounting hole 31 mutually supports with the processing preparation of oil cup hole 34, there is the positioning action of each other in the twice process, earlier through pump body 30 head excircle 4 and pump body 30 oil cup hole blank excircle 33 cooperation location preparation mounting hole 31 promptly, rethread mounting hole 31 makes pump body 30 oil cup hole 34 with pump body 30 head excircle 4, fix a position mutually, the event can effectively reduce oil cup hole 34 and oil cup hole blank excircle 33 central dislocation volume, avoided the thin serious uneven defect of oil cup hole 34 wall thickness, guarantee to produce property ability and product appearance.
The foregoing is a preferred embodiment of the present invention, and it should be noted that the scope of the present invention is not limited thereto. It will be apparent to those skilled in the art that various modifications and adaptations can be made without departing from the scope of the invention as set forth in the claims.
Claims (4)
1. Drilling processing method on the pump body fixes a position earlier pump body (30), then processes out mounting hole (31), its characterized in that on mounting panel (32) of pump body (30) through the drill bit drilling:
wherein in the positioning and fixing process, the excircle (4) at the head of the pump body (30) is sleeved in the positioning hole (3) of the positioning plate (2) for matching positioning, the pump body (30) is pre-tightened by pressing and matching at the tail of the pump body (30), the pre-tightening makes the mounting plate (32) of the pump body (30) lean against the positioning plate (2), the pump body (30) can be rotated in the pre-tightening state, the pump body (30) is aligned and clamped in the process of clamping the excircle (33) of the blank of the oil cup hole of the pump body (30) from two sides in the pre-tightening state, and the positioning of the pump body (30) is completed,
after alignment and clamping, the tail of the pump body (30) is further pressed and matched to tightly press the pump body (30) at a fixed position on the positioning plate (2), and the pump body (30) is drilled with the mounting hole (31) in a tight pressing state;
in the fixed in-process of location, the port of the pump body (30) head excircle (4) is up, and the pump body (30) afterbody is down, and from up pushing up the pump body (30) and exerting pressure down at the pump body (30) afterbody, locating plate (2) are located the top, and in locating hole (3) of locating plate (2) were emboliaed from up down in the pump body (30), the drill bit drilled out mounting hole (31) from locating plate (2) top down, and the drill bit drills out mounting hole (32) at the pump body (30).
2. The method of drilling a hole in a pump body according to claim 1, wherein: the drill bit penetrates through a drill bushing (5) on the positioning plate (2) to drill a mounting plate (32) of the pump body (30).
3. The method of drilling a hole in a pump body according to claim 1, wherein: one cylinder is used as power to apply pressure to the pump body (30) for pre-tightening and pressing at the tail part of the pump body (30), and the other cylinder is used as power to drive the left chuck (11) and the right chuck (12) to clamp and loosen the blank excircle (33) of the oil cup hole of the pump body (30).
4. The method of drilling a hole in a pump body according to claim 1, wherein: after the mounting hole (31) on the mounting plate (32) of the pump body (30) is machined and manufactured, the pump body (30) is positioned and fixed according to the excircle (4) of the head of the pump body (30) and the mounting hole (31), and then an oil cup hole (34) is manufactured.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111277808.0A CN113894309B (en) | 2021-10-30 | 2021-10-30 | Method for drilling holes in pump body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111277808.0A CN113894309B (en) | 2021-10-30 | 2021-10-30 | Method for drilling holes in pump body |
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| Publication Number | Publication Date |
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| CN113894309A CN113894309A (en) | 2022-01-07 |
| CN113894309B true CN113894309B (en) | 2022-07-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111277808.0A Active CN113894309B (en) | 2021-10-30 | 2021-10-30 | Method for drilling holes in pump body |
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| CN105033645A (en) * | 2015-08-05 | 2015-11-11 | 江苏科技大学 | Machining method for pump body of marine water-jet propulsion pump |
| CN105690132A (en) * | 2014-11-24 | 2016-06-22 | 芜湖玉泰汽车制动有限公司 | Clamp for drilling automotive braking master pump cylinder |
| CN206169712U (en) * | 2016-08-19 | 2017-05-17 | 龙工（上海）精工液压有限公司 | Pump body merry go round machine anchor clamps |
| KR101796635B1 (en) * | 2017-06-27 | 2017-11-10 | 정일범 | The manufacturing device of the cartridge |
| DE102018125085A1 (en) * | 2018-10-10 | 2020-04-16 | Bystronic Laser Ag | Fixing device, machining head, machine tool and method for fixing a workpiece |
| CN211439109U (en) * | 2019-12-16 | 2020-09-08 | 重庆齐信汽车零部件有限公司 | Hydraulic clamp for drilling oil hole and ball path on belt wheel shaft |
| EP3705227A2 (en) * | 2019-03-08 | 2020-09-09 | The Boeing Company | Supporting a contoured sheet of material during machining operations |
| CN211939154U (en) * | 2020-04-03 | 2020-11-17 | 山东蓬翔汽车有限公司 | Vertical processing drilling equipment of differential mechanism casing |
| CN113059211A (en) * | 2021-04-01 | 2021-07-02 | 王恩明 | High-efficiency drilling device and drilling method thereof |
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2021
- 2021-10-30 CN CN202111277808.0A patent/CN113894309B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5255084A (en) * | 1975-10-29 | 1977-05-06 | Toyoda Mach Works Ltd | Method of machining inner periphery of thin cylindrical workpieces |
| CN102729079A (en) * | 2012-07-03 | 2012-10-17 | 芜湖市湖净环保机械有限公司 | Drilling clamp for drilling installing holes of flange disc of pump body of multi-stage pump |
| CN203304632U (en) * | 2013-04-28 | 2013-11-27 | 安徽蓝博旺机械集团液压流体机械有限责任公司 | Tool structure for gear oil pump body drilling |
| CN105690132A (en) * | 2014-11-24 | 2016-06-22 | 芜湖玉泰汽车制动有限公司 | Clamp for drilling automotive braking master pump cylinder |
| CN105033645A (en) * | 2015-08-05 | 2015-11-11 | 江苏科技大学 | Machining method for pump body of marine water-jet propulsion pump |
| CN206169712U (en) * | 2016-08-19 | 2017-05-17 | 龙工（上海）精工液压有限公司 | Pump body merry go round machine anchor clamps |
| KR101796635B1 (en) * | 2017-06-27 | 2017-11-10 | 정일범 | The manufacturing device of the cartridge |
| DE102018125085A1 (en) * | 2018-10-10 | 2020-04-16 | Bystronic Laser Ag | Fixing device, machining head, machine tool and method for fixing a workpiece |
| EP3705227A2 (en) * | 2019-03-08 | 2020-09-09 | The Boeing Company | Supporting a contoured sheet of material during machining operations |
| CN211439109U (en) * | 2019-12-16 | 2020-09-08 | 重庆齐信汽车零部件有限公司 | Hydraulic clamp for drilling oil hole and ball path on belt wheel shaft |
| CN211939154U (en) * | 2020-04-03 | 2020-11-17 | 山东蓬翔汽车有限公司 | Vertical processing drilling equipment of differential mechanism casing |
| CN113059211A (en) * | 2021-04-01 | 2021-07-02 | 王恩明 | High-efficiency drilling device and drilling method thereof |
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| Publication number | Publication date |
|---|---|
| CN113894309A (en) | 2022-01-07 |
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