A CNC lathe fixture for processing slender shafts with flanges
A technology of CNC lathes and slender shafts, which is applied in the direction of manufacturing tools, metal processing equipment, metal processing machinery parts, etc., and can solve the problems of poor rigidity, shape and position tolerances of parts, inconsistent positioning of rough and finish machining, and shape and position tolerances of parts. Problems such as easy out-of-tolerance, etc., to achieve the effect of good part condition, good dimensional consistency, and improved production process capability
Active Publication Date: 2021-06-11
CAPITAL AEROSPACE MACHINERY +1
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Problems solved by technology
[0004] There are two general processing methods for slender shaft parts: (1) Roughly and finely process the parts on the CNC lathe. This processing method has a low one-time pass rate for the guide dimensions, and the rigidity of the parts is poor. Strict performance requirements; (2) The CNC lathe completes the semi-finishing of the slender shaft (one end clamps the outer circle, and the other end jacks up), and the grinding machine completes the guide surface finishing (double top positioning). The positioning is inconsistent, and the shape and position tolerance of the part is easy to exceed the tolerance
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[0021] The present invention is described in conjunction with accompanying drawing.
[0022] A CNC lathe fixture for processing slender shafts with flanges, which realizes the double-top positioning of parts on the CNC lathe. Its structure is as follows figure 2 As shown, the fixture is composed of 6 components, including: support ring 1, fastening clip 3, fixing ring 4, limit screw 5, positioning mandrel 6, connecting screw 7, and lock nut 8.
[0023] The positioning mandrel 6 has a structure such as image 3 As shown, the integral structure includes threaded shaft section 61, positioning shoulder 62, taper shaft 63 and optical axis section 64; the two sides of positioning shoulder 62 are respectively threaded shaft section 61 and optical axis section 64, and the optical axis section 64 is realized with the machine tool The main shaft is connected, the other side of the threaded shaft section 61 is the taper shaft 63, and the 60° conical surface of the taper shaft 63, that ...
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A CNC lathe fixture for processing a slender shaft with a flange, comprising: a support ring, etc.; The circle is matched with the inner hole of the fastening clip, and the fastening clip is locked by the fastening structure, so that the inner hole of the fastening clip shrinks and tightly hugs the outer circle of the flange of the part to be processed; the fixed ring is connected with the positioning mandrel , and fixed on the positioning mandrel, one end of the positioning mandrel is connected with the main shaft of the machine tool, and the taper surface of the other end cooperates with the taper hole of the part to be processed to realize positioning; the limit screw penetrates the limit screw connection hole of the fastening clamp, And it is stuck in the limit groove on the edge of the fixed ring to realize the synchronous rotation of the part to be processed and the main shaft. The invention improves the first pass rate of the slender shaft parts with flanges and shortens the product production cycle.
Description
technical field [0001] The invention relates to a fixture for a numerically controlled lathe. Background technique [0002] The valve is an important executive component in the launch vehicle system, and its reliability is related to the safety of personnel and equipment, and even directly affects the success of the rocket launch mission. In order to meet the functional needs and adapt to the harsh working environment, the complexity and precision of the valve product structure of the new launch vehicle continue to increase. Slender shaft parts with flanges (see figure 1 ) is an important component in the valve, which plays the role of guiding, connecting and sealing in the valve, so the structure of such parts is becoming more and more complicated, and the requirements for dimensional accuracy are more stringent. [0003] The characteristics of slender shaft parts with flanges in aerospace valves are as follows: (1) The material is difficult to process (stainless steel, s...
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IPC IPC(8): B23Q3/12
CPCB23Q3/12B23Q2703/10
Inventor 王勇智静娟佟玮范晓雷杜峻松王鑫何世林戚保凯徐青山边涛史金玉刘建秋刘全
Owner CAPITAL AEROSPACE MACHINERY