CN102581329A - Machining method for basic holes of lock shell type parts - Google Patents
Machining method for basic holes of lock shell type parts Download PDFInfo
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- CN102581329A CN102581329A CN2012100778413A CN201210077841A CN102581329A CN 102581329 A CN102581329 A CN 102581329A CN 2012100778413 A CN2012100778413 A CN 2012100778413A CN 201210077841 A CN201210077841 A CN 201210077841A CN 102581329 A CN102581329 A CN 102581329A
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Abstract
The invention innovatively provides a machining method for basic holes of lock shell type parts, which includes steps: firstly, roughly aligning the center of a hole position, namely drawing a hole center line according to a cast base excircle to roughly align the center of the hole position; secondly, drilling a primary hole, namely using a boring mill fixture to drill the primary hole with a lug plate as a standard and centering on the line drawing position; thirdly, re-aligning the center of the hole position, namely readjusting the rough reference face according to the wall thickness conditions of the primary hole after machining to align the center of the hole position; fourthly, boring; fifthly, re-aligning the center of the hole position, namely repeatedly adjusting the rough reference face according to the wall thickness conditions of the hole after boring to adjust the boring center to align the center of the hole position; and sixthly, completing machining of the basic hole of a part. Using the method can basically eliminate dependence on cast precision during basic hole machining, and proper adjustment according to conditions of the cast can be realized, so that quality of the basic hole is effectively guaranteed while machining efficiency of products is improved.
Description
Technical field
The invention relates to the processing method of lock shell class part datum hole in a kind of field of machining.
Background technology
In field of machining, lock shell class part is used to connect two independent mechanical parts mainly as attaching parts.Such part contour structures is comparatively complicated, therefore, and the woollen foundry goods that adopts usually of part.
The processing difficulties of lock shell class part is the processing of datum hole; Traditional processing method is to locate with auricle; Adopt the assembly unit drill jig to carry out the processing of datum hole, and the part quality that this processing method processed depend on the casting accuracy of foundry goods to a great extent.And, for the foundry goods of lock shell class part, its compact conformation, auricle is thinner, and the auricle deflection is bigger and unpredictable, causes thick datum level of auricle and foundry goods matrix cylinder axis parallelism error big.Therefore, it is overproof in follow-up boring processing, can the part wall thickness often to occur, and part is scrapped in batch, perhaps the foundry goods drill jig of can't packing into.The above problem all has a strong impact on the working (machining) efficiency of product and the quality of product.
Summary of the invention
The purpose of the invention provides a kind of processing method of locking shell class part datum hole; When it has eliminated the machining benchmark hole basically to the dependence of foundry goods precision; Can carry out suitable adjustment according to the state of foundry goods, effectively guarantee the quality of datum hole, also improve the working (machining) efficiency of product simultaneously.
The technical scheme of the invention: the processing method of lock shell class part datum hole comprises the steps:
(1) center, position, rough alignment hole: draw centerline hole according to foundry goods matrix cylindrical, center, position, rough alignment hole;
(2) bore hole just: adopting fixture for boring machine, is benchmark with the auricle, is the center with the scribing position, bores hole just;
(3) center, alignment holes position again:, readjust thick datum level, center, alignment holes position according to the first wall thickness situation in hole in processing back;
(4) bore hole;
(5) repeat center, alignment holes position: according to the wall thickness situation of bore hole metapore, constantly adjust thick datum level, adjustment bore hole center, center, alignment holes position;
(6) processing of completion part datum hole.
According to the supplied materials state of foundry goods, the surplus of regulating each bore hole adopts few feeding, the principle in multiplex's step.
Pressing plate is placed on the top of locating piece, and the auricle of part is clipped between pressing plate and the locating piece, and the central axis of datum hole to be processed is vertical with pressing plate.
The beneficial effect of the invention: draw centerline hole according to foundry goods matrix cylindrical earlier; Center, position, rough alignment hole; Certain understanding can be arranged the deflection of foundry goods, can find defective woolen cloth in advance, the processing waste that so just can effectively avoid so cause; Owing to change original assembly unit drill jig into fixture for boring machine; Made full use of the boring machine machining characteristics like this; Promptly adjust size and correct the position, hole, adopt this processing method can effectively eliminate of the influence of cast casting precision datum hole processing, and the phenomenon of having avoided foundry goods can't get into drill jig fully; Owing to being divided into a plurality of work steps, the processing with datum hole processes; Through the processing in first hole, can accurately recognize the deformation information of foundry goods earlier, as: the bias direction in relative datum hole, position, hole and deviation size etc.; Then according to these information; Follow-uply just can adjust thick datum level targetedly, adjustment bore hole center guarantees the designing requirement of datum hole.
Description of drawings
Fig. 1 is the threedimensional model of part.
Fig. 2 is the schematic three dimensional views of assembly unit drill jig.
Fig. 3 is the schematic three dimensional views of fixture for boring machine.
Fig. 4 is the two-dimensional representation I of assembly unit drill jig.
Fig. 5 is the two-dimensional representation II of assembly unit drill jig.
Fig. 6 is the two-dimensional representation I of fixture for boring machine.
Fig. 7 is the two-dimensional representation II of fixture for boring machine.
The specific embodiment
Like Fig. 1,3, shown in 6 and 7, the processing method of lock shell class part datum hole comprises the steps:
(1) center, position, rough alignment hole: draw centerline hole according to foundry goods matrix cylindrical, center, position, rough alignment hole;
(2) bore hole just: adopting fixture for boring machine, is benchmark with the auricle, is the center with the scribing position, bores hole just;
(3) center, alignment holes position again:, readjust thick datum level 6, center, alignment holes position according to the first wall thickness situation in hole in processing back;
(4) bore hole;
(5) repeat center, alignment holes position: according to the wall thickness situation of bore hole metapore, constantly adjust thick datum level 6, adjustment bore hole center, center, alignment holes position;
(6) processing of completion part datum hole.
According to the supplied materials state of foundry goods, the surplus of regulating each bore hole adopts few feeding, the principle in multiplex's step.
Assembling clamp before improving; Like Fig. 2, shown in 4 and 5, the center, hole of datum hole 5 to be processed is nonadjustable to thick datum level 6 apart from a, if the precision of foundry goods does not reach requirement; Will certainly cause the wall thickness of datum hole to be processed 5 of part 4 overproof, or foundry goods can't get into drill jig 1.
Fixture for boring machine after the improvement; Can make full use of the boring machine machining characteristics,, readjust thick datum level 6 according to the wall thickness situation of the datum hole behind the first hole of processing; The center, hole that is datum hole 5 to be processed is adjustable to the distance b of thick datum level 6; So just reach and correct the position, hole effectively, timely, the uniform purpose of part wall thickness is guaranteed at center, alignment holes position.
Claims (3)
1. the processing method of lock shell class part datum hole is characterized in that, comprises the steps:
(1) center, position, rough alignment hole: draw centerline hole according to foundry goods matrix cylindrical, center, position, rough alignment hole;
(2) bore hole just: adopting fixture for boring machine, is benchmark with the auricle, is the center with the scribing position, bores hole just;
(3) center, alignment holes position again:, readjust thick datum level (6), center, alignment holes position according to the first wall thickness situation in hole in processing back;
(4) bore hole;
(5) repeat center, alignment holes position: according to the wall thickness situation of bore hole metapore, constantly adjust thick datum level (6), adjustment bore hole center, center, alignment holes position;
(6) processing of completion part datum hole.
2. the processing method of lock shell class part datum hole as claimed in claim 1 is characterized in that: according to the supplied materials state of foundry goods, the surplus of regulating each bore hole adopts few feeding, the principle in multiplex's step.
3. fixture for boring machine; Be applied to the processing method of lock shell class part datum hole according to claim 1 or claim 2; It is characterized in that: pressing plate (3) is placed on the top of locating piece (2); The auricle of part (4) is clipped between pressing plate (3) and the locating piece (2), and the central axis of datum hole to be processed (5) is vertical with pressing plate (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210077841.3A CN102581329B (en) | 2012-03-22 | 2012-03-22 | Machining method for basic holes of lock shell type parts |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210077841.3A CN102581329B (en) | 2012-03-22 | 2012-03-22 | Machining method for basic holes of lock shell type parts |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102581329A true CN102581329A (en) | 2012-07-18 |
| CN102581329B CN102581329B (en) | 2014-05-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210077841.3A Active CN102581329B (en) | 2012-03-22 | 2012-03-22 | Machining method for basic holes of lock shell type parts |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105643213A (en) * | 2016-03-08 | 2016-06-08 | 哈尔滨东安发动机（集团）有限公司 | Machining method of over-difference bottom hole of blank of case |
| CN110530326A (en) * | 2019-09-17 | 2019-12-03 | 成都飞机工业（集团）有限责任公司 | A kind of datum hole arrangement method |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5222845A (en) * | 1992-06-22 | 1993-06-29 | Goldstein Steven M | Adjustable drill guide for door handles and locks |
| US20040240950A1 (en) * | 2002-08-30 | 2004-12-02 | Trettin David J. | Lockset drilling guide |
| CN1695892A (en) * | 2005-05-16 | 2005-11-16 | 渤海船舶重工有限责任公司 | Method for machining bearing holes of three-point ball pivot |
| JP4226561B2 (en) * | 2005-03-03 | 2009-02-18 | ジヤトコ株式会社 | Drilling machine positioning device |
| CN201997956U (en) * | 2010-12-29 | 2011-10-05 | 中航黎明锦西化工机械(集团)有限责任公司 | Fixture for machining trisection holes of rotating stand body of planet gear speeder |
| CN102320021A (en) * | 2011-07-20 | 2012-01-18 | 沈阳飞机工业（集团）有限公司 | Device and method for rapidly aligning numerical control (NC) machining benchmark |
| CN102350517A (en) * | 2011-10-13 | 2012-02-15 | 中联重科股份有限公司 | Clamp for standard knot of tower crane and processing template thereof |
-
2012
- 2012-03-22 CN CN201210077841.3A patent/CN102581329B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5222845A (en) * | 1992-06-22 | 1993-06-29 | Goldstein Steven M | Adjustable drill guide for door handles and locks |
| US20040240950A1 (en) * | 2002-08-30 | 2004-12-02 | Trettin David J. | Lockset drilling guide |
| JP4226561B2 (en) * | 2005-03-03 | 2009-02-18 | ジヤトコ株式会社 | Drilling machine positioning device |
| CN1695892A (en) * | 2005-05-16 | 2005-11-16 | 渤海船舶重工有限责任公司 | Method for machining bearing holes of three-point ball pivot |
| CN201997956U (en) * | 2010-12-29 | 2011-10-05 | 中航黎明锦西化工机械(集团)有限责任公司 | Fixture for machining trisection holes of rotating stand body of planet gear speeder |
| CN102320021A (en) * | 2011-07-20 | 2012-01-18 | 沈阳飞机工业（集团）有限公司 | Device and method for rapidly aligning numerical control (NC) machining benchmark |
| CN102350517A (en) * | 2011-10-13 | 2012-02-15 | 中联重科股份有限公司 | Clamp for standard knot of tower crane and processing template thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105643213A (en) * | 2016-03-08 | 2016-06-08 | 哈尔滨东安发动机（集团）有限公司 | Machining method of over-difference bottom hole of blank of case |
| CN110530326A (en) * | 2019-09-17 | 2019-12-03 | 成都飞机工业（集团）有限责任公司 | A kind of datum hole arrangement method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102581329B (en) | 2014-05-21 |
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