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Method and Fixture for Machining Uniformly Distributed Threaded Holes on Conical Surface of Workpiece

A conical surface and threaded hole technology, which is applied in the direction of manufacturing tools, metal processing equipment, metal processing machinery parts, etc., can solve the problems of poor processing quality, high processing difficulty, low efficiency, etc., and achieve the effect of rapid positioning and reduced deformation

Active Publication Date: 2016-06-01
XIAN AEROSPACEMOTOR MACHINE FACTORY
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  • Abstract
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  • Claims
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Problems solved by technology

[0005] In order to overcome the shortcomings of low efficiency, high processing difficulty and poor processing quality in the prior art, the present invention proposes a method and fixture for processing uniformly distributed threaded holes on the conical surface of the workpiece

Method used

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  • Method and Fixture for Machining Uniformly Distributed Threaded Holes on Conical Surface of Workpiece
  • Method and Fixture for Machining Uniformly Distributed Threaded Holes on Conical Surface of Workpiece
  • Method and Fixture for Machining Uniformly Distributed Threaded Holes on Conical Surface of Workpiece

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Embodiment 1

[0047] This embodiment is a method for machining a plurality of threaded holes evenly distributed on the conical surface of the workpiece by using a three-axis numerical control milling machine, and the angle α of the conical surface of the workpiece to be machined is 0-90°. In this embodiment, the angle α of the surface of the processed workpiece is 12°, and 8 threaded holes are evenly distributed on the conical surface, and the center of each threaded hole is equidistant from the center of the workpiece.

[0048] The concrete process of this embodiment is:

[0049] Step 1: Clamp the workpiece.

[0050] When clamping the workpiece, first place the support frame 4 in the fixture flat on the milling machine table, make the long side of the support frame parallel to the long side of the milling machine table, and fix the support frame 4 on the milling machine work table through T-bolts. on the countertop. Place the machine tool index plate 5 on the working panel of the support...

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Abstract

The invention discloses a method for machining threaded holes uniformly distributed in a conical surface of a workpiece, and a clamp. A central line of the threaded holes uniformly distributed in the conical surface of the workpiece is switched to be parallel to a spindle of a machine tool, and the aim of clamping the threaded holes uniformly distributed in the circumference at a time and sequentially machining the threaded holes are achieved by utilizing an index plate of the machine tool. The distance between the center of a ball at the top end of a core rod and the upper surface of a bottom plate is calculated through a trigonometric function, and the distance between the center of the ball at the top end of the core rod and the central line of the threaded holes is calculated. Meanwhile, a positioning spigot coaxial with the core rod is arranged on a base plate, so that the workpiece can be quickly positioned and aligned. Finally, the workpiece is clamped in a mode of being tightly pressed by a pressing plate without radial external clamping force, deformation of a thin-walled piece caused by clamping can be reduced, the qualification rate of products is improved, the machining efficiency is improved, and the machining cost is reduced.

Description

technical field [0001] The invention relates to the mechanical processing industry, in particular to a clamping fixture and a processing method thereof for clamping and aligning on a simple numerical control milling machine to realize processing of uniformly distributed screw hole size and shape and position tolerances on a conical surface of a workpiece. Background technique [0002] The surface where the uniformly distributed threaded holes on the conical surface of the workpiece is an arc surface, and the centerline of the threaded holes forms a certain angle with the centerline of the conical surface. To process this type of structure, a five-axis CNC milling machine is generally used, such as a five-axis turning-milling machining center, but such machine tools are generally more expensive. The current situation of machining in my country is that there are some high-precision CNC milling machines, but simple CNC milling machines still occupy a relatively large proportion...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23Q3/06B23C3/00
CPCB23C3/00B23Q3/065
Inventor 李艳辉陈晓峰焦永灵王宏刚王建锋郗鹏靖展董伟刚朱国超王力飞龚小林潘斌孟纪东岳彩荣张燕
Owner XIAN AEROSPACEMOTOR MACHINE FACTORY
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