Automatic centering device and centering method for hub fixture
An automatic and fixture technology, applied in positioning devices, clamping, wheels, etc., can solve problems such as scrapping, inconsistency, and incorrect clamping, and achieve the effects of reducing scrapping, improving positioning accuracy, and improving radial positioning accuracy
Active Publication Date: 2017-11-03
TIANJIN LIZHONG GRP CO LTD
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Problems solved by technology
[0002] At present, in the process of wheel hub processing, the problem of workpiece alignment in machining is that the existing fixtures are axially floating and radially fixed. Due to slight inconsistencies in the radial positioning dimensions of the blank on site, it is easy to cause assembly problems. The card is not correct, or even scrapped
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[0023] The present invention will be further described in detail below in conjunction with the accompanying drawings and through specific embodiments. The following embodiments are only descriptive, not restrictive, and cannot limit the protection scope of the present invention.
[0024] An automatic centering device for a hub clamp, comprising a chuck 8, a positioning block 5, a positioning hook 4, a limit chute 7 and a limit post 6, and a plurality of positioning blocks are fixed at radial intervals on the upper end of the outer circumference of the chuck. The lower end of the outer chuck is hinged with a positioning hook. The middle part of the positioning hook restricts the limiting chute. The limiting chute is slidably matched with the limiting column fixed on the chuck to control the swing direction of the positioning hook. Lock the axial position of the hub 3 to be processed;
[0025] The innovation point of the present invention is:
[0026] An automatic centering str...
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The invention relates to a wheel hub clamp automatic centering device and a centering method thereof. A plurality of groups of automatic centering assemblies are uniformly arranged on a chuck along the radial direction, each automatic centering assembly comprises a guide sleeve, a main shaft pull rod, a pull rod spring, a guide slide block, a guide groove, a positioning slide block and a positioning convex block, the guide sleeve is fixedly arranged at the center of the chuck along the axial direction, each main shaft pull rod is coaxially guided and arranged in the corresponding guide sleeve, the lower part of each main shaft pull rod is provided with the corresponding pull rod spring, each guide slide block is fixedly arranged at the upper end of the corresponding main shaft pull rod and is inclined from the center to the outer diameter, each guide slide block is glidingly embedded in the corresponding radial guide groove, the outer side of each guide groove is fixedly provided with the corresponding positioning slide block along the radial direction, each positioning slide block is guided and moved along the radial direction, and the upper end of each positioning slide block is provided with the corresponding positioning convex block. By adopting the improvement structure, the wheel hub clamp automatic centering device has the advantages that the center of circle of the radial positioning block is automatically determined within a certain range, the positioning accuracy is improved, a blank is automatically aligned, the discard caused by incorrect clamping is reduced, and the radial positioning accuracy of the blank is improved.
Description
technical field [0001] The invention belongs to the field of aluminum alloy wheel processing, in particular to an automatic centering device and a centering method for a hub clamp. Background technique [0002] At present, in the process of wheel hub processing, the problem of workpiece alignment in machining is that the existing fixtures are axially floating and radially fixed. Due to slight inconsistencies in the radial positioning dimensions of the blank on site, it is easy to cause assembly If the card is not correct, it may even be scrapped. [0003] After searching, the following patent applications in similar fields were found. [0004] An automatic centering wheel engineering chuck (CN 201320641533), including a disk surface, pressure claws and pressure claw seats, the disk surface is coaxially installed on the main shaft of a machine tool, and three pressure claws are uniformly distributed radially on the outer edge of the disk surface. The fixed pressure jaws are...
Claims
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IPC IPC(8): B23Q3/06B23Q3/00B23B31/02B23B31/10
CPCB23B31/02B23B31/10B23B31/102B23B31/103B23B31/36B23B2215/08
Inventor 王建强刘宝兴王纪刚刘长亮田鹏
Owner TIANJIN LIZHONG GRP CO LTD