CN102581329B - 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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- CN102581329B CN102581329B CN201210077841.3A CN201210077841A CN102581329B CN 102581329 B CN102581329 B CN 102581329B CN 201210077841 A CN201210077841 A CN 201210077841A CN 102581329 B CN102581329 B CN 102581329B
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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 basic holes of lock shell type parts in a kind of field of machining.
Background technology
In field of machining, lock housing class part is mainly as attaching parts, for connecting two independent mechanical parts.Such External Shape structure is comparatively complicated, and therefore, part woollen adopts foundry goods conventionally.
The processing difficulties of lock housing class part is the processing of datum hole, traditional processing method is to locate with auricle, adopt assembled drill jig to carry out the processing of datum hole, and the part quality that this processing method processes depend on the casting accuracy of foundry goods to a great extent.And, for the foundry goods of lock housing class part, its compact conformation, auricle is thinner, and auricle deflection is larger and unpredictable, causes the thick datum level of auricle and foundry goods matrix cylinder axis parallelism error large.Therefore, can often occur that part wall thickness is overproof in follow-up Drilling operation, part is scrapped in batch, or foundry goods cannot pack drill jig 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 object of the invention is to provide a kind of processing method of basic holes of lock shell type parts, dependence to casting accuracy when it has eliminated machining benchmark hole substantially, 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 basic holes of lock shell type parts, comprises the steps:
(1) rough alignment Kong Wei center: draw centerline hole according to foundry goods matrix cylindrical, rough alignment Kong Wei center;
(2) bore just hole: adopt fixture for boring machine, take auricle as benchmark, centered by scribing position, bore just hole;
(3) center, alignment holes position again: according to the first wall thickness situation in hole after processing, readjust thick datum level, center, alignment holes position;
(4) bore hole;
(5) repeat center, alignment holes position: according to the wall thickness situation of bore hole metapore, constantly adjust thick datum level, adjust bore hole center, center, alignment holes position;
(6) complete the processing of part datum hole.
According to the supplied materials state of foundry goods, regulate the surplus of each bore hole, adopt the principle of few feeding, Simulation Based On Multi-step.
Pressing plate is placed on the top of locating piece, and the auricle of part is clipped between pressing plate and locating piece, and the central axis of datum hole to be processed is vertical with pressing plate.
The beneficial effect of the invention: first draw centerline hole according to foundry goods matrix cylindrical, rough alignment Kong Wei center, can there is certain understanding to the deflection of foundry goods, can find in advance defective woollen, so just can effectively avoid the processing waste therefore causing; Owing to changing original assembled drill jig into fixture for boring machine, take full advantage of like this feature of Boring machine processing, adjust size and correct position, hole, adopting this processing method can effectively eliminate the impact of cast casting precision on datum hole processing, and the phenomenon of having avoided foundry goods cannot enter drill jig completely; Due to being divided into multiple work steps, the processing of datum hole processes, first by the processing in first hole, can accurately recognize the deformation information of foundry goods, as: bias direction and the deviation size etc. in relative datum hole, position, hole, then according to these information, follow-uply just can adjust targetedly thick datum level, adjust bore hole center, guarantee the designing requirement of datum hole.
Accompanying drawing explanation
Fig. 1 is the threedimensional model of part.
Fig. 2 is the schematic three dimensional views of assembled drill jig.
Fig. 3 is the schematic three dimensional views of fixture for boring machine.
Fig. 4 is the two-dimensional representation I of assembled drill jig.
Fig. 5 is the two-dimensional representation II of assembled 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
As shown in Fig. 1,3,6 and 7, the processing method of basic holes of lock shell type parts, comprises the steps:
(1) rough alignment Kong Wei center: draw centerline hole according to foundry goods matrix cylindrical, rough alignment Kong Wei center;
(2) bore just hole: adopt fixture for boring machine, take auricle as benchmark, centered by scribing position, bore just hole;
(3) center, alignment holes position again: according to the first wall thickness situation in hole after processing, readjust thick datum level 6, center, alignment holes position;
(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, adjust bore hole center, center, alignment holes position;
(6) complete the processing of part datum hole.
According to the supplied materials state of foundry goods, regulate the surplus of each bore hole, adopt the principle of few feeding, Simulation Based On Multi-step.
Assembling clamp before improvement, as shown in Fig. 2,4 and 5, datum hole 5 Kong centers to be processed are nonadjustable to the distance a of thick datum level 6, 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 cannot enter drill jig 1.
Fixture for boring machine after improvement, can make full use of the feature of Boring machine processing, according to the wall thickness situation of the datum hole behind the first hole of processing, readjust thick datum level 6, be that datum hole 5 Kong centers to be processed are adjustable to the distance b of thick datum level 6, so just reach and correct effectively, timely position, hole, center, alignment holes position, guarantees the uniform object of part wall thickness.
Claims (1)
1. the processing method of basic holes of lock shell type parts, is characterized in that, comprises the steps:
(1) rough alignment Kong Wei center: draw centerline hole according to foundry goods matrix cylindrical, rough alignment Kong Wei center;
(2) adopt fixture for boring machine, pressing plate (3) is placed on the top of locating piece (2), and the auricle of part (4) is clipped between pressing plate (3) and locating piece (2), and the central axis of datum hole to be processed (5) is vertical with pressing plate (3);
(3) bore just hole: lock housing class part is fixed on fixture for boring machine, take auricle as benchmark, centered by scribing position, bores just hole;
(4) center, alignment holes position again: according to the first wall thickness situation in hole after processing, readjust the thick datum level (6) of above-mentioned fixture for boring machine, center, alignment holes position;
(5) bore hole: according to the supplied materials state of foundry goods, regulate the surplus of each bore hole, adopt the principle of few feeding, Simulation Based On Multi-step;
(6) repeat center, alignment holes position: according to the wall thickness situation of bore hole metapore, constantly adjust the thick datum level (6) of above-mentioned fixture for boring machine, adjust bore hole center, center, alignment holes position;
(7) complete the processing of part datum hole.
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 |
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| CN102581329A CN102581329A (en) | 2012-07-18 |
| CN102581329B true 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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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105643213B (en) * | 2016-03-08 | 2020-10-02 | 哈尔滨东安发动机（集团）有限公司 | Machining method for out-of-tolerance bottom hole of casing blank |
| CN110530326B (en) * | 2019-09-17 | 2021-06-08 | 成都飞机工业（集团）有限责任公司 | Reference hole arrangement method |
Citations (6)
| 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 |
| 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 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7316527B2 (en) * | 2002-08-30 | 2008-01-08 | Irwin Industrial Tool Company | Lockset drilling guide |
-
2012
- 2012-03-22 CN CN201210077841.3A patent/CN102581329B/en active Active
Patent Citations (6)
| 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 |
| 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 |
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| CN102581329A (en) | 2012-07-18 |
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