Fixture for machining positioning holes of hydraulic pump body
A technology of positioning holes and hydraulic pumps, applied in the field of machining fixtures
Inactive Publication Date: 2012-06-20
WUXI WEIFU PRECISION MACHINERY MFG
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Problems solved by technology
Inaccurate positioning when processing the part will cause the position of the positioning pin hole and the eight-character hole to be out of tolerance, resulting in the scrapping of the part. The current fixture is either difficult to install or the processing efficiency is relatively low.
Method used
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[0010] As shown in the figure: the positioning hole processing fixture of the hydraulic pump body has a left connecting plate 2 fixedly installed on the left end of the upper surface of the connecting base plate 1, and a right connecting plate 3 is fixedly installed on the right end of the upper surface of the connecting base plate 1. A set of support bolts 4 and hold-down bolts 5 are respectively installed on the left and right sides of the bottom plate 1, and a pressure plate 6 is respectively sleeved on the hold-down bolts 5 on the left and right sides, and the hold-down bolts 5 of the pressure plate 6 exposed are screwed together. There are lock nuts 7, and the support bolts 4 on both sides are all against the lower surface of the pressure plate 6, and a drill bit extends into the hole 8 provided on the connecting base plate 1 corresponding to the position of the positioning hole to be processed on the lower surface of the hydraulic pump body, and the drill bit passes throug...
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The invention relates to a fixture for machining positioning holes of a hydraulic pump body. A left connecting plate is fixedly mounted at the left end of the upper surface of a connecting base plate, a right connecting plate is fixedly mounted at the right end of the upper surface of the connecting base plate, a stay bolt and a hold-down bolt in a set are mounted on the left of the connecting base plate, another stay bolt and another hold-down bolt in a set are mounted on the right of the connecting base plate, each of the hold-down bolts on the left and the right of the connecting base plate is sleeved with a press plate, and drill bit plugging holes are arranged on the connecting base plate and correspond to positions of the positioning holes required to be machined on the lower surface of the hydraulic pump body, and drill bits can contact with the positions of the positioning holes required to be machined on the lower surface of the hydraulic pump body through the drill bit plugging holes. During use of the fixture, the left connecting plate is connected with a tailstock of a lathe, and the right connecting plate is connected with an index plate of the lathe. The fixture can be used for machining four positioning holes of the hydraulic pump body by one clamping and is high in machining process and fine in machining efficiency. Accumulated error of workpieces due to multiple clamping processes can be avoided.
Description
technical field [0001] The invention relates to a machining fixture, in particular to a machining fixture for positioning holes of a hydraulic pump body. Background technique [0002] At present, because the two sides of the L series pump body need to be assembled with the front cover and the rear cover respectively, there are positioning pin holes on both sides, and there are many problems in the process of machining and mass production. Inaccurate positioning when processing the part will result in out-of-tolerance positions between the positioning pin hole and the eight-character hole, resulting in the scrapping of the part. The current fixtures are either difficult to install or have low processing efficiency. Contents of the invention [0003] The object of the present invention is to overcome the deficiencies in the prior art, and provide a jig for processing positioning holes of a hydraulic pump body with high processing precision and high efficiency. [0004] Acc...
Claims
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IPC IPC(8): B23Q3/06
Inventor 钱国锋
Owner WUXI WEIFU PRECISION MACHINERY MFG