CN103978349A - Minor-diameter ultrathin washer processing method and drilling tool used therefor - Google Patents
Minor-diameter ultrathin washer processing method and drilling tool used therefor Download PDFInfo
- Publication number
- CN103978349A CN103978349A CN201410233179.5A CN201410233179A CN103978349A CN 103978349 A CN103978349 A CN 103978349A CN 201410233179 A CN201410233179 A CN 201410233179A CN 103978349 A CN103978349 A CN 103978349A
- Authority
- CN
- China
- Prior art keywords
- drill bushing
- drilling tool
- hole
- packing ring
- drill
- 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
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
-
- 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
- B23Q3/061—Work-clamping means adapted for holding a plurality of workpieces
-
- 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
- B23Q3/065—Work-clamping means adapted for holding workpieces having a special form or being made from a special material for holding workpieces being specially deformable, e.g. made from thin-walled or elastic material
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Drilling And Boring (AREA)
Abstract
The invention discloses a minor-diameter ultrathin washer processing method and a drilling tool used therefor. The minor-diameter ultrathin washer processing method includes two steps including outer circle punching and drilling. In the punching step, washers are only subjected to shape punching but not to hole punching, the washers after shape punching are drilled by the drilling tool. The drilling tool comprises a positioning and clamping sleeve 10 and a drill sleeve fixing seat 20 connected with the positioning and clamping sleeve 10 in a threaded manner, the drilling sleeve fixing seat 20 is provided with a drilling sleeve assembling hole 21, and a drilling sleeve 30 is arranged in the drilling sleeve assembling hole 21. By the minor-diameter ultrathin washer processing method and the drilling tool, the problem of difficulty in washer die processing is solved, processing requirements of the washers are met, quality of the washers is guaranteed, and powerful technical support is provided for processing of minor-diameter ultrathin washers.
Description
Technical field
the processing method and the drilling tool used that the present invention relates to the ultra-thin packing ring of a kind of minor diameter, belong to Machining Technology field.
Background technology
in packing ring series products, for washer outer diameter, be less than 3.5mm, packing ring diameter of bore is less than 0.5mm, and the processing that gasket thickness is less than the ultra-thin packing ring of minor diameter of 0.15mm has certain difficulty of processing.If adopt one time punching molded processing, in the design of gasket mould and processing, there is the difficult processing of sizable difficulty, particularly punch, concave-convex mold to guarantee the requirement of machining accuracy.Boss mould below 0.5mm cannot be processed with peripheral milling, with the outer fenestra that centreless grinding can only grind more than 0.8mm, cannot process.
Summary of the invention
the object of the invention is to, processing method and the drilling tool used of the ultra-thin packing ring of a kind of minor diameter is provided, to solve external diameter, be less than 3.5mm, packing ring diameter of bore is less than 0.5mm, and thickness is less than a processing difficult problem for the ultra-thin packing ring of minor diameter of 0.15mm.
technical scheme of the present invention is achieved in that
the processing method of the ultra-thin packing ring of a kind of minor diameter of the present invention is, the method is to process in two steps, and the first step is to rush cylindrical, and second step is boring; When carrying out stamping-out, the not punching of profile of a die head circle, then holes the packing ring of made profile with drilling tool.
in preceding method, described drilling tool forms by locating gripping sleeve, drill bushing holder and three parts of drill bushing; Add and man-hour the part locating hole of location gripping sleeve is upwards fixed on the workbench of drilling machine, the one group of semi-finished product gasket layer that there is no endoporus of then Presser Dashing being got off stacks in part locating hole, then in semi-finished product bead top, put a drill bushing, again the screwed hole of drill bushing holder is spun on to location clamping and puts on the external screw thread of portion, drill bushing is fixed and compressed semi-finished product packing ring; Then the drill bit of drilling machine is entered from the pilot hole at drill bushing holder top and the drill jig hole of drill bushing successively, on semi-finished product packing ring, get out endoporus, obtain finished product packing ring.
according to said method, build and for of the present invention a kind of drilling tool of said method be, this drilling tool comprises the location gripping sleeve being fixed on drilling machine workbench and the drill bushing holder being connected with location clamping external threading, drill bushing holder is provided with drill bushing pilot hole, in drill bushing pilot hole, is provided with drill bushing.
in aforementioned drilling tool, described location gripping sleeve is cylindrical; Gripping sleeve middle part, location is provided with positioning boss, and the face of cylinder of positioning boss below is provided with clamping plane, and the face of cylinder of positioning boss top is provided with external screw thread; External screw thread one end is provided with part locating hole, and part locating hole bottom is provided with and the chip-removal hole of locating the gripping sleeve other end and communicating.
in aforementioned drilling tool, described drill bushing is cylindrical; The center line of drill bushing is provided with drill jig hole.
in aforementioned drilling tool, described drill bushing holder is cylindrical; Drill bushing holder is provided with pilot hole, drill bushing pilot hole and screwed hole from top to bottom.
in aforementioned drilling tool, described screwed hole bottom is provided with escape.
in aforementioned drilling tool, described pilot hole top is horn mouth.
owing to having adopted technique scheme, the present invention compared with prior art, the present invention is when packing ring carries out stamping-out, the profile of die head circle, does not carry out punching, then the packing ring of made profile is holed with drilling tool, such processing method had both solved the difficulty of gasket mould processing, met again the processing request of packing ring product, guaranteed the quality of packing ring product, for the processing of the ultra-thin packing ring of minor diameter provides strong technical guarantee.
Accompanying drawing explanation
fig. 1 is boring method schematic diagram of the present invention;
fig. 2 is drilling tool structural representation;
fig. 3 is drill bushing fixed seat structure schematic diagram;
fig. 4 is the 3-D view of Fig. 3;
fig. 5 is locating clip tight tube structure schematic diagram;
fig. 6 is the semi-finished product packing ring schematic diagram after punching press;
fig. 7 is the assemble sequence schematic diagram of drilling tool.
being labeled as in figure: 10-locates gripping sleeve, 11-external screw thread, 12-part locating hole, 13-chip-removal hole, 14-positioning boss, 15-clamping plane, 20-drill bushing holder, 21-drill bushing pilot hole, 22-screwed hole, 23-pilot hole, 24-horn mouth, 25-escape, 30-drill bushing, 31-drill jig hole, 40-semi-finished product packing ring, 41-finished product packing ring, 42-endoporus.
The specific embodiment
below in conjunction with drawings and Examples, the present invention is described in further detail, but not as any limitation of the invention.
the processing method of the ultra-thin packing ring of a kind of minor diameter of the present invention is, the method is to process in two steps, and the first step is to rush cylindrical, and second step is boring; When carrying out stamping-out, the not punching of profile of a die head circle, then holes the packing ring of made profile with drilling tool.Described drilling tool as shown in Figure 1 and Figure 7, consists of location gripping sleeve 10, drill bushing holder 20 and 30 3 parts of drill bushing; Add and man-hour the part locating hole 12 of location gripping sleeve 10 is upwards fixed on the workbench of drilling machine, then the stacked part locating hole 12 of putting into of the one group of semi-finished product packing ring 40 that there is no endoporus Presser Dashing being got off, then at semi-finished product packing ring 40 tops, put a drill bushing 30, again the screwed hole of drill bushing holder 20 22 is spun on the external screw thread 11 on gripping sleeve 10 tops, location, semi-finished product packing ring 40 is fixed and compressed to drill bushing 30; Then the drill bit of drilling machine is entered from the pilot hole 23 at drill bushing holder 20 tops and the drill jig hole 31 of drill bushing 30 successively, on semi-finished product packing ring 40, get out endoporus 42, obtain finished product packing ring 41.
according to said method, build and for the structural representation of a kind of drilling tool of the present invention of said method as shown in Figure 2 and Figure 7, this drilling tool comprises the location gripping sleeve 10 being fixed on drilling machine workbench and the drill bushing holder 20 being threaded with location gripping sleeve 10, drill bushing holder 20 is provided with drill bushing pilot hole 21, is provided with drill bushing 30 in drill bushing pilot hole 21.Location gripping sleeve 10 is cylindrical; As shown in Figure 5, gripping sleeve 10 middle parts, location are provided with positioning boss 14, and the face of cylinder of positioning boss 14 belows is provided with clamping plane 15, and the face of cylinder of positioning boss 14 tops is provided with external screw thread 11; External screw thread 11 one end are provided with part locating hole 12, and part locating hole 12 bottoms are provided with and the chip-removal hole 13 of locating gripping sleeve 10 other ends and communicating.Drill bushing 30 is cylindrical; As shown in Figure 7, the center line of drill bushing 30 is provided with drill jig hole 31.Drill bushing holder 20 is cylindrical; As shown in Figure 3 and Figure 4, drill bushing holder 20 is provided with pilot hole 26, drill bushing pilot hole 21 and screwed hole 22 from top to bottom.Screwed hole 22 bottoms are provided with escape 25.Pilot hole 26 tops are horn mouth 24.
Embodiment
this example is applicable to the processing of the ultra-thin packing ring of minor diameter.During concrete enforcement, first washer blanking is not carried out to punching, the gasket layer of the profile that fallen is stacked in the part locating hole that packs drilling tool location gripping sleeve into, once can put into tens of.The drill bushing holder that drill bushing is housed is applied mechanically and is threaded with location clamping, and rotation location gripping sleeve, makes drill bushing enter packing washer part in part locating hole.After clamping completes, then hole.
the design of drilling tool, processing, matching requirements are as follows:
1, location gripping sleeve 10 tops of this routine drilling tool are provided with external screw thread 11, so that be connected with the drill bushing holder 20 of drilling tool, are also provided with the part locating hole 12 that meets part location and the chip-removal hole 13 of being convenient to discharge iron filings on the gripping sleeve 10 of location.For the ease of clamping, to add man-hour flat by the peripheral milling of gripping sleeve 10 bottoms, location, form clamping plane 15, clamping plane 15 tops are provided with positioning boss, to prevent that locating gripping sleeve 10 in process subsides downwards.
2, the drill bushing holder 20 of this routine drilling tool is provided with drill bushing pilot hole 21 and screwed hole 22, and screwed hole 22 is connected with the external screw thread 11 on the gripping sleeve 10 of location, and screwed hole 22 bottoms are provided with escape 25, so that drill bushing 30 can reliably push against semi-finished product packing ring 40.
3, the drill bushing 30 of this routine drilling tool is provided with drill jig hole 31.Drill bushing 30 adopts high hardness material to process, to improve the service life of drill bushing 30 and to improve machining accuracy.
4, the necessary abate of the profile seamed edge of all parts of this routine drilling tool, has not allowed acute angle, in order to avoid scratch product and people's finger.
5, this routine drilling tool is when assembling, drill bushing 30 is interference fit with the drill bushing pilot hole 21 on drill bushing holder 20, and the end face of drill bushing 30 must exceed drill bushing pilot hole 21, drill bushing cylindrical is little matched in clearance with the part locating hole 12 on the gripping sleeve 10 of location, so that the drilling tool in use end face of drill bushing 30 can stretch into the part locating hole 10 of location gripping sleeve 10, what rely on screw thread rotatably compresses semi-finished product packing ring 40.
6, horn mouth 24 is processed in pilot hole 23 apertures of drill bushing holder 20, to facilitate drill bit to locate fast.
Claims (8)
1. a processing method for the ultra-thin packing ring of minor diameter, is characterized in that: the method is to process in two steps, and the first step is to rush cylindrical, and second step is boring; When carrying out stamping-out, the not punching of profile of a die head circle, then holes the packing ring of made profile with drilling tool.
2. the processing method of the ultra-thin packing ring of minor diameter according to claim 1, is characterized in that: described drilling tool forms by locating gripping sleeve, drill bushing holder and three parts of drill bushing; Add and man-hour the part locating hole of location gripping sleeve is upwards fixed on the workbench of drilling machine, the one group of semi-finished product gasket layer that there is no endoporus of then Presser Dashing being got off stacks in part locating hole, then in semi-finished product bead top, put a drill bushing, again the screwed hole of drill bushing holder is spun on to location clamping and puts on the external screw thread of portion, drill bushing is fixed and compressed semi-finished product packing ring; Then the drill bit of drilling machine is entered from the pilot hole at drill bushing holder top and the drill jig hole of drill bushing successively, on semi-finished product packing ring, get out endoporus, obtain finished product packing ring.
3. the drilling tool for method described in claim 1 or 2, it is characterized in that: comprise the location gripping sleeve (10) being fixed on drilling machine workbench and the drill bushing holder (20) being threaded with location gripping sleeve (10), drill bushing holder (20) is provided with drill bushing pilot hole (21), is provided with drill bushing (30) in drill bushing pilot hole (21).
4. drilling tool according to claim 3, is characterized in that: described location gripping sleeve (10) is for cylindrical; Location gripping sleeve (10) middle part is provided with positioning boss (14), and the face of cylinder of positioning boss (14) below is provided with clamping plane (15), and the face of cylinder of positioning boss (14) top is provided with external screw thread (11); External screw thread (11) one end is provided with part locating hole (12), and part locating hole (12) bottom is provided with and the chip-removal hole (13) of locating gripping sleeve (10) other end and communicating.
5. drilling tool according to claim 3, is characterized in that: described drill bushing (30) is for cylindrical; The center line of drill bushing (30) is provided with drill jig hole (31).
6. drilling tool according to claim 3, is characterized in that: described drill bushing holder (20) is for cylindrical; Drill bushing holder (20) is provided with pilot hole (26), drill bushing pilot hole (21) and screwed hole (22) from top to bottom.
7. drilling tool according to claim 6, is characterized in that: described screwed hole (22) bottom is provided with escape (25).
8. drilling tool according to claim 6, is characterized in that: described pilot hole (26) top is horn mouth (24).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410233179.5A CN103978349B (en) | 2014-05-29 | 2014-05-29 | The processing method and drilling tool used of a kind of ultra-thin packing ring of minor diameter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410233179.5A CN103978349B (en) | 2014-05-29 | 2014-05-29 | The processing method and drilling tool used of a kind of ultra-thin packing ring of minor diameter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103978349A true CN103978349A (en) | 2014-08-13 |
| CN103978349B CN103978349B (en) | 2017-10-13 |
Family
ID=51270649
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410233179.5A Active CN103978349B (en) | 2014-05-29 | 2014-05-29 | The processing method and drilling tool used of a kind of ultra-thin packing ring of minor diameter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103978349B (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106826285A (en) * | 2017-02-15 | 2017-06-13 | 谢博 | A kind of metal washer Drilling operation device |
| CN108746772A (en) * | 2018-06-14 | 2018-11-06 | 绵竹市科迪机械加工有限公司 | A kind of fixing device that multiple pads drill simultaneously |
| CN108788819A (en) * | 2018-06-14 | 2018-11-13 | 绵竹市科迪机械加工有限公司 | It is capable of the clamping device used for gasket drilling hole of Fast Installation |
| CN109551008A (en) * | 2018-11-30 | 2019-04-02 | 河南航天精工制造有限公司 | A kind of thin-wall part brill reaming clamping tooling |
| CN111482626A (en) * | 2020-04-29 | 2020-08-04 | 安徽省宁国新鼎汽车零部件有限公司 | High-sealing-performance framework plate processing device for capacitor composite cover plate |
| CN114770170A (en) * | 2022-05-30 | 2022-07-22 | 中国第一汽车股份有限公司 | Bushing machining clamp and machining method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB190206657A (en) * | 1902-03-18 | 1903-02-12 | James Alonzo Rose | Improvements relating to Machines for Cutting Washers and the like |
| CN2917890Y (en) * | 2006-07-11 | 2007-07-04 | 许晓华 | Fast loading and unloading drilling jig |
| CN102328190A (en) * | 2011-10-14 | 2012-01-25 | 株洲南车时代电气股份有限公司 | Metal gasket processing method |
| CN202291537U (en) * | 2011-10-13 | 2012-07-04 | 淄博柴油机总公司 | Positioning drill die for water permeation hole of cylinder cover |
| CN202877591U (en) * | 2012-08-30 | 2013-04-17 | 贵州詹阳动力重工有限公司 | Drilling mould used for wheeled excavator adjusting shim |
-
2014
- 2014-05-29 CN CN201410233179.5A patent/CN103978349B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB190206657A (en) * | 1902-03-18 | 1903-02-12 | James Alonzo Rose | Improvements relating to Machines for Cutting Washers and the like |
| CN2917890Y (en) * | 2006-07-11 | 2007-07-04 | 许晓华 | Fast loading and unloading drilling jig |
| CN202291537U (en) * | 2011-10-13 | 2012-07-04 | 淄博柴油机总公司 | Positioning drill die for water permeation hole of cylinder cover |
| CN102328190A (en) * | 2011-10-14 | 2012-01-25 | 株洲南车时代电气股份有限公司 | Metal gasket processing method |
| CN202877591U (en) * | 2012-08-30 | 2013-04-17 | 贵州詹阳动力重工有限公司 | Drilling mould used for wheeled excavator adjusting shim |
Non-Patent Citations (1)
| Title |
|---|
| 任湛谋等译: "《冷冲压》", 31 January 1959, article "典型工艺过程", pages: 47 * |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106826285A (en) * | 2017-02-15 | 2017-06-13 | 谢博 | A kind of metal washer Drilling operation device |
| CN106826285B (en) * | 2017-02-15 | 2018-10-02 | 丽水市知科科技有限公司 | A kind of metal washer drilling processing device |
| CN109014286A (en) * | 2017-02-15 | 2018-12-18 | 丽水市知科科技有限公司 | A kind of metal washer drilling processing device |
| CN109014285A (en) * | 2017-02-15 | 2018-12-18 | 丽水市知科科技有限公司 | A kind of metal washer drilling processing device |
| CN108746772A (en) * | 2018-06-14 | 2018-11-06 | 绵竹市科迪机械加工有限公司 | A kind of fixing device that multiple pads drill simultaneously |
| CN108788819A (en) * | 2018-06-14 | 2018-11-13 | 绵竹市科迪机械加工有限公司 | It is capable of the clamping device used for gasket drilling hole of Fast Installation |
| CN108788819B (en) * | 2018-06-14 | 2021-03-19 | 深圳市中朗达五金塑胶有限公司 | Clamping device for gasket drilling capable of being installed quickly |
| CN109551008A (en) * | 2018-11-30 | 2019-04-02 | 河南航天精工制造有限公司 | A kind of thin-wall part brill reaming clamping tooling |
| CN111482626A (en) * | 2020-04-29 | 2020-08-04 | 安徽省宁国新鼎汽车零部件有限公司 | High-sealing-performance framework plate processing device for capacitor composite cover plate |
| CN114770170A (en) * | 2022-05-30 | 2022-07-22 | 中国第一汽车股份有限公司 | Bushing machining clamp and machining method |
| CN114770170B (en) * | 2022-05-30 | 2024-03-26 | 中国第一汽车股份有限公司 | Bushing processing clamp and processing method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103978349B (en) | 2017-10-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103978349A (en) | Minor-diameter ultrathin washer processing method and drilling tool used therefor | |
| CN103419051A (en) | Thin-wall sleeve inner hole finish machining clamp and inner hole machining method | |
| CN204487194U (en) | Band through slot part General purpose type positioning clamp | |
| CN203390328U (en) | Gear shaving clamp allowing rapid replacement | |
| CN205074847U (en) | Clamping fixing device of thin wall section of thick bamboo class part | |
| CN102151842B (en) | Process method for turning inner hole and outer diameter of saw bit with small or middle diameter and free of fabrication hole | |
| CN108214042A (en) | Quick change flexible fixture and application method | |
| CN203426757U (en) | Clamp for finish machining of inner hole of thin-walled sleeve | |
| CN203843554U (en) | Drilling tool used for machining small-diameter ultra-thin gaskets | |
| CN206084483U (en) | Clamping device is used in profile processing in combined material conical part | |
| CN205927168U (en) | Frock of thin wall part planar end surface processing usefulness | |
| CN206393300U (en) | Processing tool for excircle and its driving member | |
| CN205096651U (en) | A frock for eccentric T type thread processing of bearing bracket | |
| CN104493228A (en) | Fixture for machining of automotive thin-wall sleeves | |
| CN104475762B (en) | A kind of Impeller Machining technique of high pressure positive blower | |
| CN203817811U (en) | Processing tooling for reducing pipes | |
| CN202317791U (en) | Mould for machining inner holes of large thin-walled tubular parts | |
| CN202622366U (en) | Clamp for machining ball head | |
| CN202825345U (en) | Eccentric sleeve keywaying tool | |
| CN203696046U (en) | Spoke drilling tool | |
| CN203197410U (en) | Gear hobbing fixture | |
| CN207043758U (en) | A kind of digital control processing profiling jig structure applied to steering yoke | |
| CN206492950U (en) | A kind of bent neck clamping tooling of scroll compression machine crankshaft | |
| CN207824022U (en) | Drilling machine fixture is clamped by hand | |
| CN204338911U (en) | A kind of cutter holder for installing machine tool |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |