CN108098474A - A kind of processing method of fixture and eccentric drill bushing for eccentric drill bushing processing - Google Patents
A kind of processing method of fixture and eccentric drill bushing for eccentric drill bushing processing Download PDFInfo
- Publication number
- CN108098474A CN108098474A CN201711366132.6A CN201711366132A CN108098474A CN 108098474 A CN108098474 A CN 108098474A CN 201711366132 A CN201711366132 A CN 201711366132A CN 108098474 A CN108098474 A CN 108098474A
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- CN
- China
- Prior art keywords
- drill bushing
- fixture
- eccentric
- axis
- hole
- 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.)
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B5/00—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor
- B24B5/36—Single-purpose machines or devices
- B24B5/48—Single-purpose machines or devices for grinding walls of very fine holes, e.g. in drawing-dies
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B41/00—Component parts such as frames, beds, carriages, headstocks
- B24B41/06—Work supports, e.g. adjustable steadies
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
- Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)
Abstract
The invention discloses the processing methods of a kind of fixture for eccentric drill bushing processing and eccentric drill bushing, there is a circular shape through hole in the upper surface of cylindrical fixture body (1), circular shape through hole includes the first circular hole and outer diameter second circular hole smaller than the first circular hole, the axis of circular shape through hole parallel to cylindrical fixture body (1) axis, and the vertical interval of two axis be H.By the eccentric accurate clamping of drill bushing part (2) to be processed on special tooling, while ensure accurate clamping of the fixture on internal grinder, select suitable grinding tool and parameter, grinding is carried out to part.The present invention can realize small lot processing of such eccentric drill bushing part in plain grinding equipment, while improve processing efficiency, reduce the processing cost of such part.
Description
Technical field
The invention belongs to field of machining, it is related to the processing and manufacturing side of eccentric bit sleeve clamp body in frock drill jig
Method.
Background technology
Eccentric drill bushing in frock clamp is the vital part for processing fixture in aviation parts, and quality directly affects
The dimensional accuracy and positional precision in aircraft engine parts hole.At present, the processing of such eccentric drill bushing part is used more be careful
Silk or high-precision numerical control coordinate mill are processed, though the processing of such method can be met the requirements, processing cost is excessively high, is unfavorable for
Processing to parts in small batch.
The content of the invention
The technical problem to be solved by the present invention is to：There is provided a kind of fixture for eccentric drill bushing processing and eccentric drill bushing plus
Work method, fixture make small lot processing that simply, can solve such eccentric drill bushing part in plain grinding equipment, simultaneously
Processing efficiency is improved, reduces the processing cost of such part.
Technical scheme is as follows：
A kind of fixture for eccentric drill bushing processing, including the parallel cylindrical fixture body in upper and lower end face, the cylinder
There is a circular shape through hole in the upper surface of clamp body, circular shape through hole include the first circular hole and outer diameter it is smaller than the first circular hole the
Two circular holes, the axis of the circular shape through hole is parallel to the axis of cylindrical fixture body, and the vertical interval of two axis is
H；
The upper surface of the cylindrical fixture body is also provided with a cooperation notch along end face circular diameter direction, mating groove
The rectangular in cross-section of mouth, width are less than the first circular hole outer diameter and more than the second circular hole outer diameters, and depth is less than the first circular hole
Depth coordinates the axis of notch and the axis of circular shape through hole, the axis of cylindrical fixture body to intersect vertically.
There is a circle annular protrusion in the cylindrical fixture body side surface lower end, as the clamping face of clamping, and clamping body
Cylindrical surface is centering face.
The thickness of the cylindrical fixture body is less than the height of eccentric drill bushing part to be processed.
A kind of eccentric drill bushing processing method using above-mentioned fixture comprises the following steps：
Step 1 selects fixture, determines the eccentricity value and cylindrical fixture body axis and circle of eccentric drill bushing part to be processed
Vertical interval H between shape ladder hole axis is consistent；
Fixture is installed on internal grinder by step 2, and the bounce of centering clamp body outer circle meets the requirements；
Eccentric drill bushing part interference fit to be processed is fitted into cylindrical fixture body, ensures cylindrical fixture by step 3
Body coordinates the two sides clearance fit of notch and eccentric drill bushing part, and the second circular hole inner cylinder face on cylindrical fixture body is with treating
The small end external cylindrical surface interference fit of the eccentric drill bushing part of processing；
Step 4 determines bistrique and grinding parameter, and the eccentric orfice of eccentric bit to be processed set part is ground.
The present invention solves the problems, such as that eccentric drill bushing processing efficiency is low, meets requirement, more existing processing method pole
Reduce processing cost greatly.
Description of the drawings
Fig. 1 is eccentric drill bushing diagrammatic cross-section to be processed；
Fig. 2 is the left view of Fig. 1；
Fig. 3 is the three-dimensional structure diagram of fixture；
Fig. 4 is eccentric drill bushing to be processed and the top view after fixture clamping；
Fig. 5 is bias drill bushing to be processed and the A-A diagrammatic cross-sections after fixture clamping in Fig. 4.
Specific embodiment
Fixture of the present invention and eccentric drill bushing processing method are described in detail below in conjunction with the accompanying drawings.
As depicted in figs. 1 and 2, it is eccentric 2 structure diagram of drill bushing part to be processed involved in the present invention, eccentric orfice 5
Eccentricity value be H.
As seen in figures 3-5, design fixture first：It is set according to the design feature of machining tool clamping, positioning method, workpiece
Series special eccentric fixture is counted, as shown in Figure 3.Then, according to clamp part structure, machine finish, reasonable distribution fixture
Each component dimensional tolerances.According to fixture process structure, best process flow is formulated, reduces mismachining tolerance, improves fixture manufacture essence
Degree ensures that fixture positioning accuracy can fully meet eccentric drill bushing part processing precision requirement.By the eccentric drill bushing zero to be processed
2 accurate clamping of part ensures accurate clamping of the fixture on internal grinder on special tooling, select suitable grinding tool and
Parameter carries out grinding to part, ensures the dimensional accuracy of processing endoporus and position of related features requirement.
It is as follows：
Step 1 according to the design feature design of eccentric drill bushing part 2 to be processed, positioning clamp for machining, ensures cylindrical
Vertical interval H between 1 axis of clamp body and circular shape through-bore axis is consistent with the eccentricity value H of eccentric orfice 5, i.e. fixture in Fig. 4
The eccentric H values tolerance of 3 centers of external circle and the second center of circular hole meets the processing request of eccentric drill bushing；
Fixture is installed on internal grinder by step 2 using annular protrusion 8, and the bounce of centering clamp body outer circle 3 conforms to
It asks；
Eccentric drill bushing part 2 to be processed is fitted into cylindrical fixture body 1, ensures cooperation notch 6 and eccentric bit by step 3
Cover 9 clearance fit of two sides of part 2, bottom surface fitting, the second circular hole inner cylinder face 4 on cylindrical fixture body 1 with it is to be processed
The small end external cylindrical surface 7 of eccentric drill bushing part 2 is interference fitted；
Step 4 selects pink fused alumina small emery wheel grinding-head of the outer diameter less than 8mm and rotating speed in 8000~10000 turns common
Circle grinding machine is ground eccentric drill bushing eccentric orfice 5, meets the requirement of drawing size.
The part processed using above-mentioned fixture and method, qualification rate from previous 40% improve till now 99%, add
3 times are improved than with slow wire feeding processing efficiency between man-hour, the quick delivery cycle of part is ensure that, reduces processing cost.
Claims (4)
1. a kind of fixture for eccentric drill bushing processing, it is characterised in that：Including the parallel cylindrical fixture body in upper and lower end face
(1), there is a circular shape through hole in the upper surface of the cylindrical fixture body (1), and circular shape through hole is including the first circular hole and outside
Footpath second circular hole smaller than the first circular hole, the axis of the circular shape through hole parallel to cylindrical fixture body (1) axis, and
The vertical interval of two axis is H；
The upper surface of the cylindrical fixture body (1) is also provided with a cooperation notch (6) along end face circular diameter direction, cooperation
The rectangular in cross-section of notch (6), width are less than the first circular hole outer diameter and more than the second circular hole outer diameters, and depth is less than the first circle
The depth in hole, the axis of cooperation notch (6) intersect vertically with the axis of circular shape through hole, the axis of cylindrical fixture body (1).
2. a kind of fixture for eccentric drill bushing processing according to claim 1, it is characterised in that：The cylindrical fixture
There is a circle annular protrusion (8) in body (1) side surface lower end.
3. a kind of fixture for eccentric drill bushing processing according to claim 1, it is characterised in that：The cylindrical fixture
The thickness of body (1) is less than the height of eccentric drill bushing part (2) to be processed.
4. a kind of eccentric drill bushing processing method using 1 or 2 or 3 fixture of claim, which is characterized in that including following step
Suddenly：
Step 1 selects fixture, determine the eccentricity value of eccentric drill bushing part (2) to be processed and cylindrical fixture body (1) axis and
Vertical interval H between circular shape through-bore axis is consistent；
Fixture is installed on internal grinder by step 2, and centering clamp body outer circle (3) bounce meets the requirements；
Eccentric drill bushing part (2) to be processed is fitted into cylindrical fixture body (1), ensures cooperation notch (6) and bias by step 3
Two sides (9) clearance fit of drill bushing part (2), the second circular hole inner cylinder face (4) on cylindrical fixture body (1) with it is to be processed
Small end external cylindrical surface (7) interference fit of eccentric drill bushing part (2)；
Step 4 determines bistrique and grinding parameter, and the eccentric orfice (5) of eccentric bit to be processed set part (2) is ground.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711366132.6A CN108098474B (en) | 2017-12-18 | 2017-12-18 | A kind of processing method of fixture and eccentric drill bushing for the processing of eccentric drill bushing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711366132.6A CN108098474B (en) | 2017-12-18 | 2017-12-18 | A kind of processing method of fixture and eccentric drill bushing for the processing of eccentric drill bushing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108098474A true CN108098474A (en) | 2018-06-01 |
| CN108098474B CN108098474B (en) | 2019-11-08 |
Family
ID=62210858
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711366132.6A Active CN108098474B (en) | 2017-12-18 | 2017-12-18 | A kind of processing method of fixture and eccentric drill bushing for the processing of eccentric drill bushing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108098474B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112658611A (en) * | 2020-12-17 | 2021-04-16 | 贵州凯星液力传动机械有限公司 | Method for machining small hole drill sleeve |
| CN114227411A (en) * | 2021-12-27 | 2022-03-25 | 天津津航技术物理研究所 | Automatic grinding device for eccentric hole |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1354365A (en) * | 1970-07-16 | 1974-06-05 | Fischer Ag Georg | Quick-change clamping device for rotary machine tools |
| CN201650546U (en) * | 2010-04-23 | 2010-11-24 | 中国北车集团大连机车车辆有限公司 | Eccentric bushing of electric starting motor of diesel engine and clamp thereof |
| CN201979328U (en) * | 2011-04-12 | 2011-09-21 | 杭州千岛湖陆行泵业有限公司 | Clamp of eccentric bushing |
| CN102975045A (en) * | 2012-11-27 | 2013-03-20 | 苏州市东立机械有限公司 | Eccentric bushing machining clamp |
| CN203045336U (en) * | 2012-11-27 | 2013-07-10 | 苏州市东立机械有限公司 | Clamp for eccentric sleeve processing |
| CN203171283U (en) * | 2013-04-02 | 2013-09-04 | 北京奥科中意环境技术有限公司 | Eccentric clamping sleeve for fine turning |
| CN203171434U (en) * | 2013-03-21 | 2013-09-04 | 无锡市利钧轴承有限公司 | Clamp for grinding inner hole of eccentric sleeve |
| CN105479226A (en) * | 2016-02-04 | 2016-04-13 | 付国祥 | Eccentric machining clamp |
-
2017
- 2017-12-18 CN CN201711366132.6A patent/CN108098474B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1354365A (en) * | 1970-07-16 | 1974-06-05 | Fischer Ag Georg | Quick-change clamping device for rotary machine tools |
| CN201650546U (en) * | 2010-04-23 | 2010-11-24 | 中国北车集团大连机车车辆有限公司 | Eccentric bushing of electric starting motor of diesel engine and clamp thereof |
| CN201979328U (en) * | 2011-04-12 | 2011-09-21 | 杭州千岛湖陆行泵业有限公司 | Clamp of eccentric bushing |
| CN102975045A (en) * | 2012-11-27 | 2013-03-20 | 苏州市东立机械有限公司 | Eccentric bushing machining clamp |
| CN203045336U (en) * | 2012-11-27 | 2013-07-10 | 苏州市东立机械有限公司 | Clamp for eccentric sleeve processing |
| CN203171434U (en) * | 2013-03-21 | 2013-09-04 | 无锡市利钧轴承有限公司 | Clamp for grinding inner hole of eccentric sleeve |
| CN203171283U (en) * | 2013-04-02 | 2013-09-04 | 北京奥科中意环境技术有限公司 | Eccentric clamping sleeve for fine turning |
| CN105479226A (en) * | 2016-02-04 | 2016-04-13 | 付国祥 | Eccentric machining clamp |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112658611A (en) * | 2020-12-17 | 2021-04-16 | 贵州凯星液力传动机械有限公司 | Method for machining small hole drill sleeve |
| CN114227411A (en) * | 2021-12-27 | 2022-03-25 | 天津津航技术物理研究所 | Automatic grinding device for eccentric hole |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108098474B (en) | 2019-11-08 |
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