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Clipper for inclined hole of electro-hydraulic servo valve core drill and countersunk hole

A technology of electro-hydraulic servo valve and inclined hole drilling, which is applied in the direction of the drilling mold for the workpiece, etc., can solve the problem of inaccurate positioning of the fixture, and achieve the effect of improving processing efficiency, high hardness, and reducing hardness.

Inactive Publication Date: 2010-06-02
SHANGHAI NUOMA HYDRAULIC SYST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a fixture for drilling inclined holes and countersunk small holes in the spool of the electro-hydraulic servo valve, so as to solve the defect of inaccurate fixture positioning in the prior art

Method used

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  • Clipper for inclined hole of electro-hydraulic servo valve core drill and countersunk hole
  • Clipper for inclined hole of electro-hydraulic servo valve core drill and countersunk hole
  • Clipper for inclined hole of electro-hydraulic servo valve core drill and countersunk hole

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Embodiment 1

[0021] Such as figure 2 , image 3 As shown, the two drill sleeves 2 are press-fitted into the two drill sleeve seats 51 and 52 respectively, respectively, and the two cylindrical pins 6 are respectively pressed into the drill body 1, and then the drill sleeve seats 52 are positioned through the cylindrical pins 6 and fixed with screws. Fix it at one end of the drill body, put it into the spool of the processed part, and fix the drill sleeve seat 51 on the other end of the drill body through a cylindrical pin, press the spool, and tighten the compression screw 33 to prevent the spool from being drilled. Rotate during the hole, put on two quick-change drill bushings 7, drill the countersunk small hole in the middle of the spool earlier, and then drill two oblique holes respectively. The small countersunk hole in the middle of the spool and the two inclined holes are processed in one clamping, which ensures the inclination angle and symmetry of the two slanted holes and the po...

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Abstract

The invention relates to a jig used for drilling incline hole and the countersunk keyhole on the valve core of electro-hydraulic servo valves, comprising a jigs body (1), a drill bush (2), a padding block (4), two drill bush seats (51) and (52), a straight pin (6) and two quick-changing drill bushes (7). The invention is characterized in that: jigs body (1) is vertically-faced on the left and right sides, front side and the back side and the lateral faces; two end faces are bilaterally symmetric and take an included angle Beta with the horizontal plane; the intracavity is a hollow cylinder coordinating with the valve core clearance; the drill bush erection holes, countersunk threaded hole are arranged at both ends of the cylinder, and the gap for the installation of the quick-changing drill bush and bolts are arranged on the lateral face of the cylinder. The invention has the advantages of convenient clamping of the valve core on the driller vice and processing two inclined holes and the countersunk keyholes on the driller. Meanwhile, on the premise of guaranteeing the processing requirements, the frequent clamping of the jig is consistent with the positioning precision, the work efficiency is increased and the requirement of the technical level of workers is lowered.

Description

technical field [0001] The invention belongs to the field of mechanical processing fixtures, in particular to a fixture for drilling oblique holes and countersunk small holes for valve cores of electro-hydraulic servo valves. Background technique [0002] The electro-hydraulic servo valve is an electro-hydraulic servo control component with high precision and high dynamic response used in the electro-hydraulic control system, which can be used in the hydraulic control system of precise displacement, speed, force and acceleration. The spool is an important part of the electro-hydraulic servo valve, which has the characteristics of small size, high size and shape and position accuracy. The two oblique holes on the spool are required to be connected to the small hole of the countersunk head, and the depth of the two oblique holes is 62mm, and the inclination angle is within the range of ±15'. 8mm connected, its structure is as figure 1 As shown, the positioning of the existin...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23B47/28
Inventor 曹勇吴越鲍时进
Owner SHANGHAI NUOMA HYDRAULIC SYST
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