CN104385006A - Drilling clamp for casing - Google Patents
Drilling clamp for casing Download PDFInfo
- Publication number
- CN104385006A CN104385006A CN201410557397.4A CN201410557397A CN104385006A CN 104385006 A CN104385006 A CN 104385006A CN 201410557397 A CN201410557397 A CN 201410557397A CN 104385006 A CN104385006 A CN 104385006A
- Authority
- CN
- China
- Prior art keywords
- base
- boss
- hole
- block
- stud
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000005553 drilling Methods 0.000 title abstract 4
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 238000002360 preparation method Methods 0.000 abstract description 4
- 238000003754 machining Methods 0.000 description 10
- 230000000694 effects Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 239000010720 hydraulic oil Substances 0.000 description 2
- TVEXGJYMHHTVKP-UHFFFAOYSA-N 6-oxabicyclo[3.2.1]oct-3-en-7-one Chemical compound C1C2C(=O)OC1C=CC2 TVEXGJYMHHTVKP-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 230000003028 elevating effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- 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
- B23Q3/082—Work-clamping means other than mechanically-actuated hydraulically actuated
-
- 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
- B23Q3/062—Work-clamping means adapted for holding workpieces having a special form or being made from a special material
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Jigs For Machine Tools (AREA)
Abstract
The invention relates to a drilling clamp for a casing. The drilling clamp comprises a base, clamping devices, a support plate, a fixed V-shaped block, a movable V-shaped block, a cover plate, a limiting rod and a limiting spring, wherein a No.1 boss is arranged at the front part of the upper surface of the base, a No.2 boss is arranged at the back part of the upper surface of the base, a through hole is formed in the side surface of the front end of the base, the clamping devices are symmetrically arranged at the left side and the right side of the base, the fixed V-shaped block is fixedly arranged on the No.1 boss, the cover plate is fixedly arranged on the No.2 boss, the movable V-shaped block is positioned under the cover plate, the limiting rod penetrates through the through hole of the base, and the limiting spring sleeves the outer side of the limiting rod. The drilling clamp has the advantages that the production of products is quick and convenient, the production preparation cycle is shortened, a high-efficiency clamping device using a hydraulic pump as a power source is adopted, the labor production efficiency is improved, the processing quality of a workpiece is reliably guaranteed, and the technological property of a machine tool is fully performed and improved.
Description
Technical field
The present invention relates to jig Design technical field, specifically a kind of housing drill jig.
Background technology
Electric block decelerator is hoisting machinery motor, reel, decelerator, brake and running trolley etc. are combined as a whole compactly, because it is light and handy flexibly, cost is lower, and it is safe and reliable, the large interchangeability of universal component degree is strong, substance elevating capacity is high, the feature such as easy to maintenance is of many uses now, deeply popular light crane equipment.The casing of electric block decelerator is the basis of combining whole decelerator, and the version of box parts and crudy all have a significant impact for serviceability such as vibration, noise, life-span and efficiency, heating, the operating accuracy of whole machine.Fixture refers to the intermediate member by locating clamping between part and machining tool, and fixture mainly comprises clamping element, setting element, and the quality of jig Design also directly affects crudy and the working (machining) efficiency of product.Modern production requires that the product variety that enterprise produces updates fast, to adapt to fierce market competition, this just proposes very high requirement to additional processing equipment, but up to now, general enterprises is also accustomed to adopting traditional special fixture, has had a strong impact on the efficiency of machining.So modern production proposes new requirement to fixture, requirement can not only make new product go into operation quickly and easily and shorten the Operational preparation cycle, and the high-precision lathe of Precision Machining can also be suitable for, in addition, also want the efficient clamping device that hydraulic pump etc. can be adopted to be power source, to improve labor productivity further.While meeting processing request, do not affect the processing route of cutter and tool changing and that part is processed is more convenient, reliably ensure the crudy of workpiece, improve working (machining) efficiency, reduce labor intensity, give full play to and expand the processing performance of lathe.
Summary of the invention
Technical problem to be solved by this invention is that provide a kind of reasonable in design, that clamping efficiency is high boring grab, can not affect again the processing route of machine tool, i.e. a kind of housing drill jig while ensureing machining accuracy.
Technical problem to be solved by this invention realizes by the following technical solutions:
A kind of housing drill jig, comprises base, clamping device, support plate, fixing vee-block, mobile vee-block, cover plate, gag lever post and limit spring.The described base left and right sides is arranged with ear seat, described base upper surface front portion is provided with a boss, a described boss upper surface is provided with pin-and-hole and screwed hole, described base upper surface rear portion is provided with No. two boss, described No. two boss upper surfaces are provided with pin-and-hole and screwed hole, and the side, front end of described base is provided with through hole.Described clamping device symmetry is arranged on the left and right sides of base, and clamping device is for clamping processed housing, and the mode be arranged symmetrically with can make clamping more firm.Described support plate is connected by screw and base, and support plate is used for positioning the machined surface of processed housing.Described fixing vee-block is fixedly mounted on a boss by straight pin and screw, and fixing vee-block is used for positioning the external cylindrical surface of processed housing.Be provided with groove in the middle part of described cover plate, and be fixedly mounted on No. two boss by straight pin and screw.Described mobile vee-block one end is provided with screwed hole, and mobile vee-block is positioned at below cover plate, and is placed in the groove of No. two boss, and mobile vee-block can slide in groove.Described gag lever post one end is provided with screw thread, and middle part is provided with limited step, and gag lever post is through the through hole of base, and the corresponding threaded holes of the screwed one end of gag lever post and mobile vee-block closes.Described limit spring is positioned on the left of limited step, and is enclosed within outside gag lever post, and limit spring can make mobile vee-block and processed housing keep in touch.
Described clamping device comprises hydraulic cylinder, stud, back-moving spring, spheric washer, sphere band shoulder nut, moving press plate, push rod and faced washer.Described hydraulic cylinder is fixed by screws on base, and hydraulic cylinder provides power for clamping.Described push rod one end is spherical in shape, and the other end is connected with the piston of hydraulic cylinder; Described moving press plate one end has square groove, and the ballhead of push rod is placed in square groove, and the other end of moving press plate is provided with waist through hole.Described stud one end is arranged on base.Described back-moving spring is enclosed within stud, and when hydraulic oil in hydraulic cylinder reduces pressure, back-moving spring can make moving press plate return to the state of unclamping from clamped condition.Described moving press plate is positioned on back-moving spring, and stud is through the waist through hole of moving press plate.Described spheric washer is positioned on moving press plate, and is enclosed within stud.Described sphere band shoulder nut is positioned on spheric washer, and screws mutually with stud, and spheric washer and sphere band are takeed on nut and be used in combination, and increase the frictional force between screw thread, can effectively prevent from loosening, and improve the security reliability of clamping.Between described back-moving spring and moving press plate, faced washer is installed.
The quantity of described support plate is four.
The invention has the beneficial effects as follows: the present invention can make product go into operation quickly and easily and shorten the Operational preparation cycle, and the high-precision lathe of Precision Machining can also be suitable for, in addition, have employed with hydraulic pump is the efficient clamping device of power source, to further increase labor productivity, the processing route of cutter and tool changing is not affected and that part is processed is more convenient while meeting processing request, reliably ensure the crudy of workpiece, improve working (machining) efficiency, reduce labor intensity, give full play to and expand the processing performance of lathe.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the present invention is further described.
Fig. 1 is main TV structure schematic diagram of the present invention;
Fig. 2 is plan structure schematic diagram of the present invention;
Fig. 3 is left TV structure schematic diagram of the present invention;
Fig. 4 is the structural representation of clamping device of the present invention;
Fig. 5 is the working state figure after clamping electric block reducer shell of the present invention.
Detailed description of the invention
The technological means realized to make the present invention, creation characteristic, reaching object and effect is easy to understand, below the present invention being set forth further.
As shown in Figures 1 to 5, a kind of housing drill jig, comprises base 1, clamping device 2, support plate 3, fixing vee-block 4, mobile vee-block 5, cover plate 6, gag lever post 7 and limit spring 8.Described base 1 left and right sides is arranged with ear seat 101, described base 1 upper surface front portion is provided with a boss 102, described boss 102 upper surface is provided with pin-and-hole and screwed hole, described base 1 upper surface rear portion is provided with No. two boss 103, described No. two boss 103 upper surfaces are provided with pin-and-hole and screwed hole, and the side, front end of described base 1 is provided with through hole 104.Described clamping device 2 symmetry is arranged on the left and right sides of base 1, and clamping device 2 is for clamping processed housing, and the mode be arranged symmetrically with can make clamping more firm.Described support plate 3 is connected by screw and base 1, and support plate 3 is for positioning the machined surface of processed housing.Described fixing vee-block 4 is fixedly mounted on a boss 102 by straight pin and screw, and fixing vee-block 4 is for positioning the external cylindrical surface of processed housing.Be provided with groove in the middle part of described cover plate 6, and be fixedly mounted on No. two boss 103 by straight pin and screw.Described mobile vee-block 5 one end is provided with screwed hole 501, and mobile vee-block 5 is positioned at below cover plate 6, and is placed in the groove of No. two boss 103, and mobile vee-block 5 can slide in groove.Described gag lever post 7 one end is provided with screw thread, and middle part is provided with limited step 701, and gag lever post 7 is through the through hole 104 of base 1, and matches with the screwed hole 501 of mobile vee-block 5 in the screwed one end of gag lever post 7.Described limit spring 8 is positioned on the left of limited step 701, and is enclosed within outside gag lever post 7, and limit spring 8 can make mobile vee-block 5 keep in touch with processed housing.
Described clamping device 2 comprises hydraulic cylinder 201, stud 202, back-moving spring 203, spheric washer 204, sphere band shoulder nut 205, moving press plate 206, push rod 207 and faced washer 208.Described hydraulic cylinder 201 is fixed by screws on base 1, and hydraulic cylinder 201 provides power for clamping.Described push rod 207 one end is spherical in shape, and the other end is connected with the piston of hydraulic cylinder 201; Described moving press plate 201 one end has square groove, and the ballhead of push rod 207 is placed in square groove, and the other end of moving press plate 206 is provided with waist through hole.Described stud 202 one end is arranged on base 1.Described back-moving spring 203 is enclosed within stud 202, and when hydraulic cylinder 201 is closed, back-moving spring 203 can make moving press plate 206 return to the state of unclamping from clamped condition.Described moving press plate 206 is positioned on back-moving spring 203, and stud 202 is through the waist through hole of moving press plate 206.Described spheric washer 204 is positioned on moving press plate 206, and is enclosed within stud 202.Described sphere band shoulder nut 205 is positioned on spheric washer 204, and screws mutually with stud 202, and spheric washer 204 and sphere band are takeed on nut 205 and be used in combination, and increase the frictional force between screw thread, can effectively prevent from loosening, and improve the security reliability of clamping.Between described back-moving spring 203 and moving press plate 206, faced washer 208 is installed.
The quantity of described support plate 3 is four.
During work, first hydraulic cylinder is in compressive state, then processed housing is placed on support plate 6, then fixing vee-block 4 is slided backward, the periphery of housing is now made to contact with mobile vee-block 5, unclamp fixing vee-block 4, vee-block is fixed close to housing under the effect of limit spring 8, and be attached on the periphery of housing, under the effect of the power of limit spring 8, motion is in the vertical limited, thus the location completed housing, then hydraulic cylinder 201 is opened, clamping device is started working, moving press plate 206 compresses housing downwards under the impetus of push rod 207, then hydraulic cylinder 201 is made to keep constant voltage, namely clamping work is completed.When completion of processing, make hydraulic oil backflow in hydraulic cylinder 201, now moving press plate 206 returns to the state of unclamping under the effect of back-moving spring 203, namely completes the work of unclamping, and is now taken off by processed good housing.
The present invention has the following advantages:
(1) product can be made quickly and easily to go into operation and shorten the Operational preparation cycle, and the high-precision lathe of Precision Machining can also be suitable for;
(2) have employed with hydraulic pump is the efficient clamping device of power source, to further increase labor productivity;
(3) while meeting processing request, do not affect the processing route of cutter and tool changing and that part is processed is more convenient, reliably ensure the crudy of workpiece, improve working (machining) efficiency, reduce labor intensity, give full play to and expand the processing performance of lathe.
More than show and describe general principle of the present invention, principal character and advantage of the present invention.The technical staff of the industry should understand; the present invention is not restricted to the described embodiments; the just principle of the present invention described in above-described embodiment and description; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the claimed scope of the invention.Application claims protection domain is defined by appending claims and equivalent thereof.
Claims (3)
1. a housing drill jig, comprise base (1), clamping device (2), support plate (3), fixing vee-block (4), mobile vee-block (5), cover plate (6), gag lever post (7) and limit spring (8), it is characterized in that: described base (1) left and right sides is arranged with ear seat (101), described base (1) upper surface front portion is provided with a boss (102), described boss (102) upper surface is provided with pin-and-hole and screwed hole, described base (1) upper surface rear portion is provided with No. two boss (103), described No. two boss (103) upper surfaces are provided with pin-and-hole and screwed hole, the side, front end of described base (1) is provided with through hole (104), described clamping device (2) symmetry is arranged on the left and right sides of base (1), described support plate (3) is connected by screw and base (1), described fixing vee-block (4) is fixedly mounted on a boss (102) by straight pin and screw, described cover plate (6) middle part is provided with groove, and is fixedly mounted on No. two boss (103) by straight pin and screw, described mobile vee-block (5) one end is provided with screwed hole (501), and mobile vee-block (5) is positioned at cover plate (6) below, and is placed in the groove of No. two boss (103), described gag lever post (7) one end is provided with screw thread, middle part is provided with limited step (701), gag lever post (7) is through the through hole (104) of base (1), and matches with the screwed hole (501) of mobile vee-block (5) in gag lever post (7) screwed one end, described limit spring (8) is positioned at limited step (701) left side, and is enclosed within gag lever post (7) outside.
2. a kind of housing drill jig according to claim 1, it is characterized in that: described clamping device (2) comprises hydraulic cylinder (201), stud (202), back-moving spring (203), spheric washer (204), sphere band shoulder nut (205), moving press plate (206), push rod (207) and faced washer (208), and described hydraulic cylinder (201) is fixed by screws on base (1); Described push rod (207) one end is spherical in shape, and the other end is connected with the piston of hydraulic cylinder (201); Described moving press plate (201) one end has square groove, and the other end is provided with waist through hole; Described stud (202) one end is arranged on base (1); Described back-moving spring (203) is enclosed within stud (202); Described moving press plate (206) is positioned on back-moving spring (203), and stud (202) is through the waist through hole of moving press plate (206); Described spheric washer (204) is positioned on moving press plate (206), and is enclosed within stud (202); Described sphere band shoulder nut (205) is positioned on spheric washer (204), and screws mutually with stud (202); Faced washer (208) is installed between described back-moving spring (203) and moving press plate (206).
3. a kind of housing drill jig according to claim 1, is characterized in that: the quantity of described support plate (3) is four.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410557397.4A CN104385006B (en) | 2014-10-20 | 2014-10-20 | Drilling clamp for casing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410557397.4A CN104385006B (en) | 2014-10-20 | 2014-10-20 | Drilling clamp for casing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104385006A true CN104385006A (en) | 2015-03-04 |
| CN104385006B CN104385006B (en) | 2017-02-08 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410557397.4A Active CN104385006B (en) | 2014-10-20 | 2014-10-20 | Drilling clamp for casing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104385006B (en) |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104907851A (en) * | 2015-06-15 | 2015-09-16 | 鹰普（中国）有限公司 | Locating fixing tool for combine harvester fixing plate |
| CN105269037A (en) * | 2015-10-27 | 2016-01-27 | 芜湖市泰能电热器具有限公司 | Disc part drilling fixture |
| CN105290438A (en) * | 2015-11-20 | 2016-02-03 | 沈阳黎明航空发动机(集团)有限责任公司 | Self-locking linkage expanding block device for improving part machining rigidity |
| CN105945606A (en) * | 2016-06-30 | 2016-09-21 | 蚌埠精科机床制造有限公司 | Size-adjustable type high-precision machine tool clamp |
| CN106736411A (en) * | 2017-03-22 | 2017-05-31 | 安徽航大智能科技有限公司 | A kind of gear box casing floating hold-down mechanism |
| CN108044536A (en) * | 2017-11-06 | 2018-05-18 | 中车长江铜陵车辆有限公司 | A kind of 16/17 type coupler knuckle pin hole machined positioning tool |
| CN108908103A (en) * | 2018-06-26 | 2018-11-30 | 中国船舶重工集团公司第七0七研究所 | A kind of planetary cycloid reducer casing machining device |
| CN110027058A (en) * | 2019-05-23 | 2019-07-19 | 浙江菱格木业有限公司 | A kind of fish-bone spells the short side lock processing unit (plant) and processing method of solid wooden floor board |
| CN110090987A (en) * | 2019-06-03 | 2019-08-06 | 舟山嘉程机械有限公司 | The processing unit (plant) of oilhole in gonnecting rod body |
| CN110682129A (en) * | 2019-10-22 | 2020-01-14 | 遵义汇航机电有限公司 | Fixture for milling and drilling front face of guide rail bracket on launcher |
| CN110732892A (en) * | 2019-10-30 | 2020-01-31 | 无锡瑞真精机股份有限公司 | Fixture module for processing vacuum booster |
| CN115301979A (en) * | 2022-07-25 | 2022-11-08 | 济南中船设备有限公司 | Piston pin drilling tool |
| WO2023230846A1 (en) * | 2022-05-31 | 2023-12-07 | 安徽池州家用机床股份有限公司 | Dovetail grinding fixture for machine tool |
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| CN101791768A (en) * | 2010-02-09 | 2010-08-04 | 温岭市精仁机械有限公司 | Fixture monomer and workpiece fixture combined therewith |
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| CN103495883A (en) * | 2013-09-18 | 2014-01-08 | 常州市武进翔宇电子元器件有限公司 | V-shaped platform fixture |
| CN203636423U (en) * | 2013-10-18 | 2014-06-11 | 浙江台玖精密机械有限公司 | Quick replacing device for workpieces processed by slotting machine |
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2014
- 2014-10-20 CN CN201410557397.4A patent/CN104385006B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101791768A (en) * | 2010-02-09 | 2010-08-04 | 温岭市精仁机械有限公司 | Fixture monomer and workpiece fixture combined therewith |
| CN201783839U (en) * | 2010-08-26 | 2011-04-06 | 安徽广博机电制造有限公司 | Rotor inner hole chamfering fixture |
| CN102079050A (en) * | 2010-12-28 | 2011-06-01 | 成都飞机工业（集团）有限责任公司 | Dual-section clamping tool for fixing and positioning elbow parts |
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Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104907851A (en) * | 2015-06-15 | 2015-09-16 | 鹰普（中国）有限公司 | Locating fixing tool for combine harvester fixing plate |
| CN105269037A (en) * | 2015-10-27 | 2016-01-27 | 芜湖市泰能电热器具有限公司 | Disc part drilling fixture |
| CN105290438A (en) * | 2015-11-20 | 2016-02-03 | 沈阳黎明航空发动机(集团)有限责任公司 | Self-locking linkage expanding block device for improving part machining rigidity |
| CN105290438B (en) * | 2015-11-20 | 2017-05-24 | 沈阳黎明航空发动机(集团)有限责任公司 | Self-locking linkage expanding block device for improving part machining rigidity |
| CN105945606A (en) * | 2016-06-30 | 2016-09-21 | 蚌埠精科机床制造有限公司 | Size-adjustable type high-precision machine tool clamp |
| CN106736411A (en) * | 2017-03-22 | 2017-05-31 | 安徽航大智能科技有限公司 | A kind of gear box casing floating hold-down mechanism |
| CN108044536A (en) * | 2017-11-06 | 2018-05-18 | 中车长江铜陵车辆有限公司 | A kind of 16/17 type coupler knuckle pin hole machined positioning tool |
| CN108908103A (en) * | 2018-06-26 | 2018-11-30 | 中国船舶重工集团公司第七0七研究所 | A kind of planetary cycloid reducer casing machining device |
| CN110027058A (en) * | 2019-05-23 | 2019-07-19 | 浙江菱格木业有限公司 | A kind of fish-bone spells the short side lock processing unit (plant) and processing method of solid wooden floor board |
| CN110027058B (en) * | 2019-05-23 | 2024-05-31 | 浙江菱格木业有限公司 | Short-side lock catch processing device and processing method for fishbone spliced solid wood floor |
| CN110090987A (en) * | 2019-06-03 | 2019-08-06 | 舟山嘉程机械有限公司 | The processing unit (plant) of oilhole in gonnecting rod body |
| CN110682129A (en) * | 2019-10-22 | 2020-01-14 | 遵义汇航机电有限公司 | Fixture for milling and drilling front face of guide rail bracket on launcher |
| CN110732892A (en) * | 2019-10-30 | 2020-01-31 | 无锡瑞真精机股份有限公司 | Fixture module for processing vacuum booster |
| WO2023230846A1 (en) * | 2022-05-31 | 2023-12-07 | 安徽池州家用机床股份有限公司 | Dovetail grinding fixture for machine tool |
| CN115301979A (en) * | 2022-07-25 | 2022-11-08 | 济南中船设备有限公司 | Piston pin drilling tool |
| CN115301979B (en) * | 2022-07-25 | 2023-10-13 | 济南中船设备有限公司 | Piston pin drilling tool |
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| Publication number | Publication date |
|---|---|
| CN104385006B (en) | 2017-02-08 |
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