Combined detection tool for P value of countersunk bolt

Abstract

The utility model relates to a testing fixture, in particular to a combined testing fixture for the P value of a countersunk bolt. The combined gauge comprises a caliper gauge and a clamping seat matched with the caliper gauge, the caliper gauge comprises an L-shaped base and a clamping head, the L-shaped base comprises a bottom plate and a vertical plate, the bottom plate is provided with a kidney-shaped hole, the clamping head is arranged at the upper end of the inner side face of the vertical plate, the clamping head is provided with a go end and a no-go end, the no-go end is lower than the go end by a certain distance, and the no-go end is provided with a through hole. The clamping seat comprises a clamping seat base body, and a stepped hole is formed in the center of the clamping seat base body. The combined detection tool is good in universality, simple in structure, convenient to operate and rapid in detection.

Description

TECHNICAL FIELD

[0001] The utility model relates to a testing fixture, in particular to a combined testing fixture for the P value of a countersunk bolt. BACKGROUND

[0002] A countersunk head is a widely used head structure of a bolt (screw), and has certain plane requirements for the installation part, and the P value is proposed to be controlled based on this. At present, the P value of the countersunk bolt (screw) is mainly measured by using a projector and other optical image measuring instruments. The countersunk bolt has high demand, large output, short delivery cycle, and a large number of samples are required for acceptance. However, each measurement needs to be repositioned, and the time is long, the inspection efficiency is low, and the existing technical inspection method cannot meet the inspection requirements. UTILITY MODEL CONTENTS

[0003] In order to overcome the above defects, the purpose of the utility model is to provide a combined testing fixture for the P value of a countersunk bolt, which is simple to operate, can be used for P value measurement of countersunk bolts (screws) of different angles and different specifications, has good universality, and has high inspection efficiency.

[0004] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0005] A combined testing fixture for the P value of a countersunk bolt, comprising a snap gauge and a clamping seat matched with the snap gauge, the snap gauge comprising an L-shaped base and a clamping head, the L-shaped base comprising a bottom plate and a vertical plate, a waist-shaped hole being formed in the bottom plate, the clamping head being arranged on the inner side of the vertical plate at the upper end, a through end and a stop end being arranged on the clamping head, the stop end being lower than the through end by a certain distance, the clamping seat comprising a clamping seat base body, a stepped hole being formed in the center of the clamping seat base body.

[0006] Preferably, the clamping seat base body is cylindrical.

[0007] Preferably, two parallel planes are arranged on the arc-shaped side surface of the clamping seat base body.

[0008] Preferably, the stepped hole is composed of a middle small-diameter hole and two end large-diameter holes, the middle small-diameter hole is matched with the light rod section of the countersunk bolt, and the one end large-diameter hole is in contact with the tapered surface of the countersunk bolt.

[0009] Preferably, the L-shaped base and the clamping head are integrally formed, and the bottom plate and the vertical plate are integrally formed.

[0010] The utility model has the following beneficial effects:

[0011] 1. The utility model provides a combination gauge capable of quickly testing and controlling P value, when the through end and the end size of the clamping seat are fixed, the height of the clamping seat is changed, the same standard, different length, angle, specification countersunk head bolt (screw) P value can be tested, it is good in versatility, and the structure is simple, convenient operation, and the test is quick, solves the single test method and the low test efficiency problem of prior art. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 It is the structural diagram of the utility model caliper gauge;

[0013] Figure 2 It is the structural diagram of the utility model clamping seat one;

[0014] Figure 3 It is the structural diagram of the utility model clamping seat two;

[0015] Figure 4 It is the structural diagram of the utility model sample;

[0016] Figure 5 It is the structural diagram of the utility model combination gauge;

[0017] In the drawing: 1-caliper gauge, 11-L-shaped base, 111-bottom plate, 112-stand plate, 113-waist-shaped hole, 12-clamping head, 121-through end, 122-end, 2-clamping seat, 21-clamping seat base, 22-step hole, 23-flat surface, 3-sample. DETAILED DESCRIPTION

[0018] The utility model is further described below in combination with some specific embodiments.

[0019] Example 1

[0020] Referring to Figures 1-5 A combination gauge for countersunk head bolt P value, comprising caliper gauge 1, and the clamping seat 2 of cooperation with caliper gauge 1, referring to Figure 1 Caliper gauge 1 includes L-shaped base 11 and clamping head 12, and the clamping head 12 and L-shaped base 11 are enclosed to form a clamping opening, for placing clamping seat 2 and countersunk head bolt (or sample 3), and L-shaped base 11 includes bottom plate 111 and stand plate 112, and the waist-shaped hole 113 is formed in bottom plate 111, facilitating the long bolt on clamping seat 2 to pass through, and the clamping head 12 is fixed on the inner side of stand plate 112 on the upper end, and the through end 121 and the end 122 are arranged on the clamping head 12, referring to Figure 5 The through end 121 is provided with T mark, and the end 122 is provided with Z mark, and the end 122 is lower than the through end 121 by a certain distance, and the distance is made according to the design requirement of standard; referring to Figure 2 Clamping seat 2 includes clamping seat base 21, and the step hole 22 is formed in the center of clamping seat base 21, and the step hole 22 is used for placing countersunk head bolt (or sample 3).

[0021] Further, the card seat base 21 is cylindrical, facilitating operation.

[0022] Further, referring to Figure 3 , two planes 23 are arranged in parallel on the arc-shaped side of the card seat base 21, facilitating placement of the gauge when not in use, preventing rolling, and also facilitating marking on the planes.

[0023] Further, the stepped hole 22 is composed of a middle small-diameter hole and two end large-diameter holes, the middle small-diameter hole matches the light rod section of the countersunk head bolt, one end large-diameter hole matches the taper surface of the countersunk head bolt, and the light rod and the taper surface of the countersunk head bolt are matched and contacted through the middle small-diameter hole and the one end large-diameter hole, realizing clamping and positioning of the measured piece, and the other end large-diameter hole facilitates opening of the middle small-diameter hole.

[0024] Further, the L-shaped base 11 and the chuck 12 are integrally formed, the bottom plate 111 and the vertical plate 112 are integrally formed, a process groove one is arranged at the joint position of the bottom plate 111 and the vertical plate 112, and a process groove two is arranged at the end of the through end 121 of the chuck 12. The process groove one and the process groove two are square grooves, slight deformation occurs after a heat treatment process in the process of manufacturing the gauge, and the process groove one and the process groove two are arranged to facilitate grinding of the gauge.

[0025] The method for using the combined gauge of the countersunk head bolt P value comprises the following steps:

[0026] (1) Verify the gauge: first, place the upper limit P value sample in the card seat, then place the card seat on the gauge, the bottom surface of the card seat is attached to the upper surface of the bottom plate of the gauge, and the card seat with the sample is tested along the bottom surface of the card seat, then the lower limit P value sample is tested in the same way, if the head end surfaces of the two samples pass through the through end of the gauge chuck and are stopped at the stop end, that is, the P values of the two samples are qualified, and the function of the gauge is normal;

[0027] (2) P value test: first, place the product in the card seat, then place the card seat on the gauge, the bottom surface of the card seat is attached to the upper surface of the bottom plate of the gauge, and the card seat with the product is moved along the bottom surface of the card seat, the head end surface of the product passes through the through end of the gauge chuck and is stopped at the stop end, that is, the P value of the product is qualified, otherwise it is unqualified.

[0028] Finally, it should be pointed out that the above embodiments are only used to illustrate the technical solutions of the utility model and not to limit, other modifications or equivalent replacements of the technical solutions of the utility model made by ordinary skilled in the art should be covered in the scope of the claims of the utility model, as long as they do not deviate from the spirit and scope of the technical solutions of the utility model.

Claims

1. A combined inspection tool for the P-value of countersunk bolts, characterized in that, Includes a caliper (1) and a caliper seat (2) that mates with the caliper (1). The caliper (1) includes an L-shaped base (11) and a caliper head (12). The L-shaped base (11) includes a base plate (111) and a vertical plate (112). The base plate (111) has a waist-shaped hole (113). The caliper head (12) is located on the upper end of the inner side of the vertical plate (112). The caliper head (12) has a through end (121) and a stop end (122). The stop end (122) is a certain distance lower than the through end (121). The caliper seat (2) includes a caliper seat base (21). The caliper seat base (21) has a stepped hole (22) in the center.

2. The combined inspection fixture for the P-value of countersunk bolts according to claim 1, characterized in that, The card holder base (21) is cylindrical.

3. The combined inspection fixture for the P-value of countersunk bolts according to claim 2, characterized in that, The card holder base (21) has two parallel planes (23) arranged on its arc-shaped side surface.

4. The combined inspection fixture for the P-value of countersunk bolts according to any one of claims 1 to 3, characterized in that, The stepped hole (22) consists of a small diameter hole in the middle and large diameter holes at both ends. The small diameter hole in the middle matches the smooth section of the countersunk bolt, and the large diameter hole at one end makes contact with the tapered surface of the countersunk bolt.

5. The combined inspection fixture for the P-value of countersunk bolts according to claim 4, characterized in that, The L-shaped base (11) and the clip (12) are integrally formed, and the base plate (111) and the upright plate (112) are integrally formed.

Images