Multipurpose clamp for preparing tubular rivet tail hole measuring test piece

Abstract

The utility model belongs to the technical field of aviation high-end rivet quality detection, and provides a multipurpose clamp for preparing a tubular rivet tail hole measuring test piece, which comprises a clamping seat, a screw rod, a handle rod, a rotary joint and a clamping sliding block, a horizontal positioning groove is further formed in the face, opposite to the clamping end, of the clamping sliding block, the horizontal positioning groove horizontally penetrates through the blind hole, the section of the horizontal positioning groove is in a V shape, a secondary positioning plate is movably arranged between the clamping sliding block and the clamping end, a plurality of secondary positioning grooves distributed in the length direction of the secondary positioning plate are formed in the top of the secondary positioning plate, and the section of each secondary positioning groove is in a V shape. The device is reasonable in design and simple in structure, is used for completing multiple times of clamping of the tubular rivet so as to measure a tail groove based on a grinding method, reduces the dependence on a high-grade special measuring instrument, completes the measuring operation by using existing equipment in a workshop, is beneficial to reducing the cost, and is suitable for large-scale popularization.

Description

Technical Field

[0001] The utility model belongs to the technical field of aviation high-end rivet quality detection, in particular to a multi-purpose clamp for preparing a tubular rivet tail hole measurement test piece. Background Art

[0002] In the field of aerospace, titanium-niobium tubular rivets are high-end rivets, and aircraft manufacturers need a large number of titanium-niobium tubular rivets. Generally, titanium-niobium tubular rivets include the general features of tubular rivets, such as a rivet for electronic connectors or plug-in power supply components disclosed in the existing patent CN201368100Y, which includes a head, a body and a tubular groove.

[0003] At present, since aviation tubular rivets are made of titanium-niobium materials, titanium-niobium tubular rivets are a kind of high-end rivets, and the maximum diameter of the tail groove is less than 5mm, ordinary measuring instruments cannot complete the measurement of their specific internal dimensions, and the cost of advanced special measuring instruments is relatively high. Utility Model Content

[0004] In view of the above-mentioned technical problems existing in measuring the tail groove of titanium-niobium tubular rivets, the utility model proposes a multi-purpose fixture for preparing tubular rivet tail hole measurement specimens, which is used to complete multiple clamping of tubular rivets so as to measure the tail groove based on the grinding method, thereby reducing the dependence on advanced special measuring instruments.

[0005] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is that the utility model provides a multi-purpose fixture for preparing tubular rivet tail hole measurement specimens, including a U-shaped clamping seat, one end of the clamping seat is a clamping end and the other end is a connecting end, the connecting end is provided with a screw hole, a screw is provided in the screw hole, a handle is provided at a section of the screw away from the connecting end, and a clamping slider is provided at one end of the screw facing the clamping end through a rotating joint, a pair of horizontally distributed blind holes are provided on the opposite surfaces of the clamping slider and the clamping end, and a horizontal positioning groove is further provided on the opposite surface of the clamping slider and the clamping end, the horizontal positioning groove horizontally penetrates the blind hole and its cross-section is V-shaped, a secondary positioning plate is movably provided between the clamping slider and the clamping end, and a plurality of secondary positioning grooves distributed along its length direction are provided on the top of the secondary positioning plate, and the cross-section of the secondary positioning groove is V-shaped.

[0006] Preferably, a guide portion is provided at the bottom of the clamping slide block, and the guide portion is movably matched with a slide groove provided on the clamping seat.

[0007] Preferably, an inverted T-shaped groove is provided at the bottom of the clamping seat.

[0008] Preferably, the clamping slide block is provided with vertical positioning grooves on its surface opposite to the clamping end and distributed in a cross pattern with the horizontal positioning grooves.

[0009] Preferably, the secondary positioning plate is a rectangular structure and is connected to the clamping end via bolts, and the bolts correspond to the blind holes one by one.

[0010] Compared with the prior art, the advantages and positive effects of the utility model are:

[0011] 1. The utility model provides a multi-purpose fixture for preparing a tubular rivet tail hole measurement specimen. The relative relationship between the clamping slider and the clamping end is adjusted by operating the handle, and the head of the tubular rivet is facing the blind hole and the tail is facing outward, so as to achieve one-time clamping. The tail end of the tubular rivet is ground by 0.01-0.03mm at the grinding end of the grinder. The secondary positioning plate is installed, and the tubular rivet is clamped on the clamping slider, the secondary positioning groove and the clamping end to complete the secondary clamping. The tubular rivet as a whole is ground by 1 / 2D at the grinding end of the grinder, so that the tail groove of the tubular rivet is exposed and externalized, which is convenient for the visual measurement equipment to complete the corresponding size measurement. The device has a reasonable design and a simple structure. It is used to complete multiple clamping of tubular rivets so as to measure the tail groove based on the grinding method, which reduces the dependence on advanced special measuring instruments and uses the existing equipment in the workshop to complete the measurement operation, which is conducive to reducing costs and is suitable for large-scale promotion. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the following is a brief introduction to the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0013] Figure 1 An axonometric view of a multi-purpose fixture (without a secondary positioning plate) for preparing a tubular rivet tail hole measurement specimen provided in an embodiment;

[0014] Figure 2 A working diagram of a multi-purpose fixture for preparing a tubular rivet tail hole measurement specimen provided in an embodiment;

[0015] Figure 3 An axonometric view in another direction of a multi-purpose fixture for preparing a tubular rivet tail hole measurement specimen provided in an embodiment;

[0016] Figure 4 An axonometric view of a secondary positioning plate provided in an embodiment;

[0017] In the above figures, 1. clamping seat; 11. clamping end; 12. connecting end; 13. slide groove; 14. inverted T-slot; 2. screw; 3. handle; 4. clamping slide block; 41. horizontal positioning groove; 42. guide part; 43. vertical positioning groove; 5. blind hole; 6. secondary positioning plate; 61. secondary positioning groove; 7. tubular rivet. DETAILED DESCRIPTION

[0018] In order to more clearly understand the above-mentioned purpose, features and advantages of the utility model, the utility model is further described below in conjunction with the accompanying drawings and embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict. For the convenience of description, if the words "upper", "lower", "left" and "right" appear below, they only indicate that the upper, lower, left and right directions are consistent with the drawings themselves, and do not limit the structure.

[0019] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways than those described herein. Therefore, the present invention is not limited to the specific embodiments of the following disclosure.

[0020] Examples, such as Figures 1 to 4 As shown, the utility model provides a multi-purpose fixture for preparing a tubular rivet tail hole measurement specimen, comprising a U-shaped clamping seat 1, one end of the clamping seat 1 is a clamping end 11 and the other end is a connecting end 12, the connecting end 12 is provided with a screw hole, a screw rod 2 is provided in the screw hole, and a handle 3 is provided at a section of the screw rod 2 away from the connecting end 12. The device is based on a grinding method to clamp the tubular rivet specimen to be measured, which is convenient for the workshop grinding equipment to grind the tubular rivet 7, providing conditions for subsequent measurement.

[0021] In order to facilitate the clamping of the tube-mounted rivet, the utility model is provided with a clamping slider 4 through a rotating joint at the end of the screw rod 2 facing the clamping end 11, and a pair of horizontally distributed blind holes 5 are provided on the opposite surfaces of the clamping slider 4 and the clamping end 11. The clamping slider 4 is also provided with a horizontal positioning groove 41 on the opposite surface of the clamping slider 4 and the clamping end 11. The horizontal positioning groove 41 horizontally penetrates the blind hole 5 and its cross-section is V-shaped. A secondary positioning plate 6 is movably provided between the clamping slider 4 and the clamping end 11, and a plurality of secondary positioning grooves 61 distributed along its length direction are provided on the top of the secondary positioning plate 6, and the cross-section of the secondary positioning groove 61 is V-shaped.

[0022] Specifically, the relative distance between the clamping slider 4 and the clamping end 11 is adjusted by operating the handle 3, and the head of the tubular rivet 7 is directed toward the blind hole 5 and the tail thereof is directed outward, so as to realize one-time clamping, and the tail end of the tubular rivet 7 is ground by 0.01-0.03 mm at the grinding end of the grinder; the secondary positioning plate 6 is installed, and the tubular rivet is clamped on the clamping slider 4, the secondary positioning groove 61 and the clamping end 11 to complete the secondary clamping, and the tubular rivet 7 as a whole is ground by about 1 / 2D at the grinding end of the grinder, where D is the diameter of the tubular rivet body, and a certain margin is maintained to expose and externalize the tail groove of the tubular rivet, and the specimen is removed for fine processing to remove burrs and make the grinding surface of the rivet smoother, so as to facilitate the visual measurement equipment to complete the corresponding size measurement of the externalized tail groove. The device has reasonable design and simple structure, and is used to complete multiple clamping of tubular rivets so as to measure the tail groove based on the grinding method, thereby reducing the dependence on advanced special measuring instruments, and using the existing equipment in the workshop to complete the measurement operation, which is conducive to reducing costs.

[0023] In order to ensure the movement stability of the clamping slider 4, the utility model is provided with a guide portion 42 at the bottom of the clamping slider 4, and the guide portion 42 is movably cooperated with the slide groove 13 provided on the clamping seat 1, and the slide groove 13 provides a predetermined movement route for the guide portion 42, i.e., the clamping slider 4. While ensuring the movement stability of the clamping slider 4, it is also beneficial to improve the clamping stability of the clamping slider 4 on the specimen.

[0024] In order to improve the practicality of the clamping seat 1, the utility model is provided with an inverted T-slot 14 at the bottom of the clamping seat 1, and the inverted T-slot 14 can cooperate with the guide rail on the grinding equipment, so that it can establish a reliable installation relationship with the slide plate or main board of the grinding equipment during the grinding process, so as to improve the grinding quality of the tubular rivets it carries.

[0025] Furthermore, the clamping slider 4 of the utility model is provided with vertical positioning grooves 43 which are cross-distributed with the horizontal positioning grooves 41 on its opposite surface to the clamping end 11. Different from the positioning direction of the horizontal positioning grooves 41, the vertical positioning grooves 43 can realize positioning of the tubular rivet in another direction, so as to carry out targeted processing on parts of the tubular rivet according to experimental needs.

[0026] In order to improve the stability of the secondary positioning plate 6, the secondary positioning plate 6 in the utility model is a rectangular structure and is connected to the clamping end 11 by bolts, and the bolts correspond to the blind holes 5 in one-to-one orientation, so as to improve its stability between the clamping slider 4 and the clamping end 11, and provide a stable support foundation for multiple tubular rivets at the same time, thereby ensuring the grinding quality after secondary clamping.

[0027] The above description is only a preferred embodiment of the present invention and does not limit the present invention in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes and apply it to other fields. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. A multi-purpose fixture for preparing a tubular rivet tail hole measurement specimen, comprising a U-shaped clamping seat, one end of the clamping seat is a clamping end and the other end is a connecting end, the connecting end is provided with a screw hole, a screw rod is provided in the screw hole, and a handle rod is provided at a section of the screw rod away from the connecting end, characterized in that: A clamping slider is provided at one end of the screw rod facing the clamping end through a rotating joint, and a pair of horizontally distributed blind holes are provided on the opposite surfaces of the clamping slider and the clamping end. The clamping slider is also provided with a horizontal positioning groove on the opposite surface of the clamping slider and the clamping end. The horizontal positioning groove horizontally penetrates the blind hole and has a V-shaped cross-section. A secondary positioning plate is movably provided between the clamping slider and the clamping end, and a plurality of secondary positioning grooves distributed along its length direction are provided on the top of the secondary positioning plate, and the cross-section of the secondary positioning groove is V-shaped.

2. A multi-purpose fixture for preparing a tubular rivet tail hole measurement specimen according to claim 1, characterized in that: A guide portion is provided at the bottom of the clamping slide block, and the guide portion is movably matched with a slide groove provided on the clamping seat.

3. A multi-purpose fixture for preparing tubular rivet tail hole measurement specimens according to claim 2, characterized in that: An inverted T-shaped groove is arranged at the bottom of the clamping seat.

4. A multi-purpose fixture for preparing a tubular rivet tail hole measurement specimen according to claim 3, characterized in that: The clamping slide block is provided with vertical positioning grooves on its surface opposite to the clamping end and distributed in a cross with the horizontal positioning grooves.

5. A multi-purpose fixture for preparing a tubular rivet tail hole measurement specimen according to claim 4, characterized in that: The secondary positioning plate is a rectangular structure and is connected to the clamping end via bolts, wherein the bolts correspond to the blind holes one by one.

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