CN108489366A - Detect the subsidiary cubing that endoporus combines non-isometrical outer circle benchmark concentricity - Google Patents

Abstract

The invention provides an auxiliary measuring tool for detecting the joint reference coaxiality of the inner hole to the unequal outer circle, which includes a base; a V-shaped groove is arranged on the base along the axial direction; the V-shaped groove There are V-shaped surfaces on both sides; a limiting groove is provided on the V-shaped surfaces on both sides of the V-shaped groove; one end surface of the base is used as an axial limiting surface; an axial limiting groove is provided in the limiting groove Axial limit locking parts are arranged on the base on both sides of the V-shaped groove of the base to lock the axial limit pins; movable radial limit pins are set in the axial limit pins, and the radial The limit pin faces the middle direction of the V-shaped groove of the base; the side of the axial limit pin is provided with a radial limit locking member for locking the radial limit pin. The invention can obviously reduce the cost of the inspection tool and improve the inspection efficiency.

Description

Auxiliary measuring and checking tool for detecting the joint reference coaxiality of the inner hole and the non-equal diameter outer circle

technical field

The invention belongs to the technical field of measuring tools, in particular to an auxiliary measuring and checking tool for detecting the coaxiality of an inner hole to a non-equal-diameter outer circle joint reference coaxiality.

Background technique

With the development of the aviation industry, the demand for aircraft parts is increasing, and the structural parts of the cylindrical pump seat are widely used in the various functional systems of the aircraft. Requirements are one of the most typical basic characteristics in product design and are very common.

For the traditional detection methods of this characteristic, most of them are detected by CMM (three-coordinate) or combined use of dial indicator + V-shaped block. Aviation products have the characteristics of many varieties and small batches, and the cost of using CMM is relatively high, while the ordinary dial gauge + V-shaped block detection method can only be used to detect the coaxiality of non-equal-diameter joint references for a specific part. The versatility is not strong.

Contents of the invention

The purpose of the present invention is to overcome the deficiencies in the prior art, provide an auxiliary measuring gauge for detecting the coaxiality of the inner hole to the unequal outer circle joint reference reference, improve the inspection efficiency and reduce the inspection cost. The technical scheme adopted in the present invention is:

An auxiliary measuring tool for detecting the joint reference coaxiality of the inner hole to the unequal outer circle, including a base; a V-shaped groove is arranged on the base along the axial direction; the two sides of the V-shaped groove are V-shaped surface; a limit groove is provided on the V-shaped surface on both sides of the V-shaped groove; one end surface of the base is used as an axial limit surface;

An axial limit pin is arranged in the limit groove; an axial limit locking member is arranged on the base on both sides of the V-shaped groove of the base for locking the axial limit pin;

A movable radial limit pin is set in the axial limit pin, and the radial limit pin faces the middle direction of the V-shaped groove of the base; the side of the axial limit pin is provided with a radial limit locking member, For locking the radial limit pin.

Further, a row of a plurality of first threaded holes is respectively provided on the substrate on both sides of the V-shaped groove of the base, and the axial limit locking member adopts an axial limit locking screw, and the axial limit locking screw is arranged on the in the first threaded hole.

Further, a second threaded hole is provided on the side of the axial limit pin, and the radial limit locking member adopts a radial limit locking screw, and the radial limit locking screw is arranged in the second threaded hole.

Further, the radial limit pin is inserted into the middle hole of the axial limit pin.

The advantages of the present invention are:

1) The traditional auxiliary measuring and checking tool, the limit block used for joint reference positioning of non-equal diameter outer circles is fixed, and can only detect parts of a specific structure; the present invention uses axial and radial sliding limit pin devices , can detect a series of products with similar structures, and it is not necessary to design a set of special inspection tools for each product, thereby significantly reducing the design and manufacturing costs of inspection tools.

2) The present invention is simple in design and easy to operate. Compared with CMM detection, the detection efficiency is 40% higher.

Description of drawings

Fig. 1 is a schematic diagram of the structure and composition of the present invention.

Fig. 2 is a schematic diagram of part measurement in the present invention.

Fig. 3 is a schematic diagram of a lever percentage gauge used for measurement in the present invention.

Detailed ways

The present invention will be further described below in conjunction with specific drawings and embodiments.

The present invention proposes an auxiliary measuring tool for detecting the joint reference coaxiality of the inner hole to the unequal outer circle, as shown in Figure 1, including a base 1;

The base 1 is provided with a V-shaped groove 101 in the axial direction; the two sides of the V-shaped groove 101 are V-shaped surfaces; 102; one end face of the base 1 serves as an axial limit surface 103;

An axial limit pin 2 is arranged in the limit groove 102; an axial limit locking member 5 is arranged on the substrate on both sides of the V-shaped groove 101 of the base for locking the axial limit pin 2;

Specifically, a row of multiple first threaded holes 104 are respectively provided on the substrates on both sides of the V-shaped groove 101 of the base, and the axial limit locking member 5 adopts an axial limit locking screw, and the axial limit locking screw Set in the first threaded hole 104, after the position of the axial limit pin 2 is adjusted in the limit groove 102, the axial limit locking screw is used to lock the axial limit pin 2;

A movable radial limit pin 4 is set in the axial limit pin 2, and the radial limit pin 4 faces the middle direction of the V-shaped groove 101 of the base 1; the side of the axial limit pin 2 is provided with a radial limit A locking member 3 for locking the radial limit pin 4;

Specifically, the radial limit pin 4 is inserted in the middle hole of the axial limit pin 2; a second threaded hole 201 is provided on the side of the axial limit pin 2, and the radial limit locking member 3 adopts a radial limit position locking screw, the radial limit locking screw is set in the second threaded hole 201, after the radial limit pin 4 is adjusted relative to the axial limit pin 2, the radial limit locking screw is used to lock Tight radial limit pin 4;

As shown in Figure 2, the two joint datums of the part 6 are non-equal outer circles 601 and 602; the diameter of the outer circle 601 is greater than the diameter of the outer circle 602; the outer circle 601 is the first joint datum, and the outer circle 602 is the second joint datum;

First fit the reverse side of the flange 603 of the part 6 to the axial limit surface 103 of the base 1 to limit the axial freedom of the part 6, and then fix the part 6 to a rotating mechanism through the flange 603 (at this time, the part 6 can be held floating);

Then, position the outer circle 601 with a larger diameter of the part 6 with the V-shaped surfaces on both sides of the V-shaped groove 101 on the base 1; slide left and right along the limit grooves 102 on both sides to adjust the position of the axial limit pin 2 to the second position. The joint datum (outer circle 602) basically coincides, and is fixed with the axial limit locking member 5 through the first threaded hole 104 at the corresponding position;

Finally, adjust the position of the radial limit pins 4 on both sides along the vertical sliding direction until the top surface is tangent to the outer circle of the second joint datum with a smaller diameter, and fix it with the radial limit locking member 3; so far, Part 6 completes the positioning setting process on the auxiliary measuring gage;

As shown in Figure 3, attach the probe 7 of the lever dial indicator to the wall 603 of the measured inner hole of the part 6, slowly rotate the part 6 clockwise (or counterclockwise) at a constant speed, and observe the reading change of the dial indicator at the same time. The difference between the extreme values of the dial readings is the coaxiality of the inner hole relative to the joint datum of the non-equal diameter outer circle.

Finally, it should be noted that the above specific embodiments are only used to illustrate the technical solutions of the present invention without limitation, although the present invention has been described in detail with reference to examples, those of ordinary skill in the art should understand that the technical solutions of the present invention can be carried out Modifications or equivalent replacements without departing from the spirit and scope of the technical solution of the present invention shall be covered by the claims of the present invention.

Claims (4)

1. a kind of detection endoporus combines non-isometrical outer circle the subsidiary cubing of benchmark concentricity, including a pedestal (1)；Its It is characterized in that,

Pedestal (1) upper edge is axially arranged with a V-type groove (101)；V-type groove (101) both sides are V-type face；In V-type It is respectively provided with a limiting slot (102) on the V-type face of groove (101) both sides；One end end face of pedestal (1) is as axial limiting face (103)；

Axial limiting pin (2) is equipped in the limiting slot (102)；It is arranged on the matrix of pedestal V-groove (101) both sides axial Limiting locking part (5), for locking axial spacer pin (2)；

In the axial limiting pin (2) setting can movable radial spacer pin (4), radial spacer pin（4）Towards the V of pedestal (1) The intermediate direction of type groove (101)；The radial limiting locking part (3) of side setting of the axial limiting pin (2), for locking radial limit Position pin (4).

2. detection endoporus combines non-isometrical outer circle the subsidiary cubing of benchmark concentricity as described in claim 1, special Sign is,

Multiple first threaded holes (104) of a row, axial limiting locking member are respectively provided on the matrix of pedestal V-groove (101) both sides (5) axial limiting lock-screw, axial limiting lock-screw is used to be arranged in first threaded hole (104).

3. detection endoporus combines non-isometrical outer circle the subsidiary cubing of benchmark concentricity as described in claim 1, special Sign is,

The second threaded hole (201) is set in the side of axial limiting pin (2), radial limiting locking part (3) is using radial limiting lock Tight screw, radial limiting locking screw are arranged in second threaded hole (201).

4. detection endoporus combines non-isometrical outer circle the subsidiary cubing of benchmark concentricity as described in claim 1, special Sign is,

Radial spacer pin (4) is inserted in the mesoporous of axial limiting pin (2).