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Inclined hole of electro-hydraulic servo valve core drill and clipper for countersunk head ascopore

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

Inactive Publication Date: 2008-05-14
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, which has solved the defect of inaccurate fixture positioning in the prior art

Method used

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  • Inclined hole of electro-hydraulic servo valve core drill and clipper for countersunk head ascopore
  • Inclined hole of electro-hydraulic servo valve core drill and clipper for countersunk head ascopore

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Embodiment 1

[0021] As shown in Fig. 2 and Fig. 3, first press fit the two drill sleeves 2 into the two drill sleeve seats 51, 52 respectively, press the two cylindrical pins 6 into the drill mold body 1 respectively, and then pass the drill sleeve seat 52 through The cylindrical pin 6 is positioned and fixed on one end of the jig body with screws, loaded into the valve core of the processed part, and then the drill sleeve seat 51 is positioned and fixed on the other end of the jig body through the cylindrical pin, the valve core is pressed, and the screw 33 is tightened to prevent The spool rotates when drilling the slanted hole, and two quick-change drill bushings 7 are put on, the countersunk small hole in the middle of the spool is drilled first, and then two slanted holes are drilled 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 t...

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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 pass through and connect with 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 connection, its structure is shown in Figure 1, the positioning of ...

Claims

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Application Information

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