Instrument for detecting diameter of external thread

Abstract

The utility model relates to an instrument for detecting the diameter of an external thread. Comprising a base, a supporting piece arranged on the base, a first rod arranged on the supporting piece, a first roller rotating on the end face of the first rod, a second rod rotating in the supporting piece, a second roller rotating on the end face of the second rod, a dial indicator measuring the rotating angle of the second rod and an elastic piece driving the second roller to press the first roller. A first groove is formed in the supporting piece; the second rod rotates in the first groove; a rotating point is arranged on the second rod; the elastic piece is arranged on one side of the rotating point; the second roller is arranged on the other side of the rotating point; a measuring area is formed between the two groups of first rollers and second rollers; the side walls of the first roller and the second roller correspond to the side wall of the measuring piece. The problems of low inspection efficiency and poor accuracy due to the fact that no special inspection tool exists, manual spot inspection can only be depended on, and judgment is mainly depended on experience of inspectors through visual inspection are solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of diameter appearance, especially relates to a detection external thread diameter appearance. BACKGROUND

[0002] In the prior art, in the production process of the external thread pipe, due to the equipment or human reasons, the thread wire outside the thread pipe is prone to burr or fracture, which affects the use and sealing performance of the thread pipe, and the thread pipe connection place is buried with safety hazards.

[0003] In order to avoid the defective products flowing to the market, the thread wire needs to be efficiently and accurately inspected in the factory inspection process of the thread pipe. There is no special inspection tool in the prior art, and only manual sampling inspection can be relied on, and the judgment is mainly relied on the experience of the inspector through visual inspection, so the inspection efficiency is low and the accuracy is poor. UTILITY MODEL CONTENT

[0004] The embodiment of the application provides a detection external thread diameter appearance, which solves the problem that there is no special inspection tool in the prior art, only manual sampling inspection can be relied on, and the judgment is mainly relied on the experience of the inspector through visual inspection, so the inspection efficiency is low and the accuracy is poor.

[0005] The technical scheme adopted by the embodiment of the application is as follows.

[0006] A detection external thread diameter appearance, comprising a base, a support arranged on the base, a first rod arranged on the support, a first roller rotatably arranged on the end face of the first rod, a second rod rotatably arranged in the support, a second roller rotatably arranged on the end face of the second rod, a dial gauge for measuring the rotation angle of the second rod, and an elastic member for driving the second roller to press the first roller; a first groove is formed in the support; the second rod is rotatable in the first groove; a rotation point is arranged on the second rod; the elastic member is arranged on one side of the rotation point; the second roller is arranged on the other side of the rotation point; one end of the elastic member abuts against the first groove, and the other end of the elastic member abuts against the second rod; the acting end of the dial gauge corresponds to the elastic member; the first roller and the first rod are oppositely arranged in two groups; a measurement area is formed between the two groups of first rollers and the second roller; the side walls of the first roller and the second roller correspond to the side walls of the measurement member.

[0007] As a further improvement of the above technical scheme: a second groove is formed in the first rod; a plurality of positioning holes are formed in the support; the second groove corresponds to the positioning holes; when the bolts are arranged in the positioning holes and abut against the side wall of the first rod, the position of the first rod is fixed.

[0008] As a further improvement of the above technical solution: a third groove is provided on the side wall of the first groove; the third groove is arc-shaped and the arc circle of the third groove corresponds to the rotation point; a third rod is provided on the second rod; the third rod slides in the third groove.

[0009] One or more technical solutions provided in the embodiments of this application have at least the following technical effects or advantages:

[0010] 1. Due to the plate-shaped base, a support member is provided on the base, and the support member is vertically arranged with the base, a first rod is provided on the support member, a positioning hole is provided on the support member, and a plurality of positioning holes are provided. A second groove is provided on the first rod, and the second groove corresponds to the positioning hole. The second groove is long, and the positioning block can be threadedly connected with a bolt until the bolt fixes the position of the first rod. Two groups of the first rod and the positioning hole are arranged relative to each other, a first roller is provided on the end surface of the first rod, a first groove is provided on the support member, and the second rod is rotatably connected in the first groove. A rotation point is provided on the second rod, and the second rod is L-shaped. A second roller is rotatably connected on the end surface of the second rod, and the second roller corresponds to the first roller and a measuring area is formed between the two groups of first rollers and the second rollers. An elastic member is provided in the first groove, and one end of the elastic member is against the first Two rods, the other end of the elastic member is against the first groove, the elastic member is located on the side of the second rod away from the second rod, a dial indicator is provided on the support member, the measuring end of the dial indicator is against the second rod and the measuring end of the dial indicator corresponds to the elastic member, a third groove is provided on the side wall of the first groove, the third groove is arc-shaped, and the circle of the third groove corresponds to the rotation point, a third rod is provided on the second rod, the third rod is located in the third groove and slides, thereby guiding the rotation of the second rod, first press the third rod to drive the second roller away from the first roller so that the measuring space between the first roller and the second roller becomes larger, and then the measured object is placed in the measuring space, and then release the third rod so that the first roller and the second roller press the side wall of the workpiece, and then read the value of the dial indicator to measure the value, thereby realizing the measurement of the outer diameter of the threaded pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a structural schematic diagram of the external thread diameter detection instrument in the present utility model.

[0012] Figure 2 It is a side view of the external thread diameter detection instrument in the present utility model.

[0013] Figure 3 It is a side view of the external thread diameter detection instrument in the present utility model.

[0014] In the figure: 1. base; 2. support member; 21. first slot; 22. third slot; 23. positioning hole; 3. first rod; 31. second slot; 4. first roller; 5. second rod; 51. rotation point; 6. second roller; 7. elastic member; 8. micrometer; 52. third rod. DETAILED DESCRIPTION

[0015] The embodiment of the present application provides a detection external thread diameter instrument, solves the problem that there is no special detection tool in the prior art, manual sampling inspection is relied on, and detection efficiency is low and accuracy is poor.

[0016] The technical scheme in the embodiment of the present application is to solve the above problem, and the general idea is as follows

[0017] In order to better understand the above technical scheme, the above technical scheme will be described in detail in combination with the drawings of the specification and the specific embodiments.

[0018] A detection external thread diameter instrument, comprising a base 1, a support 2 arranged on the base 1, a first rod 3 arranged on the support 2, a first roller 4 rotatably arranged on the end face of the first rod 3, a second rod 5 rotatably arranged in the support 2, a second roller 6 rotatably arranged on the end face of the second rod 5, a dial gauge 8 for measuring the rotation angle of the second rod 5, and an elastic member 7 for pressing the first roller 4; a first groove 21 is arranged on the support 2; the second rod 5 is rotatably arranged in the first groove 21; a rotation point 51 is arranged on the second rod 5; the elastic member 7 is arranged on one side of the rotation point 51; the second roller 6 is arranged on the other side of the rotation point 51; one end of the elastic member 7 abuts against the first groove 21, and the other end of the elastic member 7 abuts against the second rod 5; the acting end of the dial gauge 8 corresponds to the elastic member 7; the first roller 4 is arranged in two groups opposite to the first rod 3; the two groups of first rollers 4 and the second roller 6 form a measurement area; the side wall of the first roller 4 and the side wall of the second roller 6 correspond to the side wall of the measuring member.

[0019] A second groove 31 is arranged on the first rod 3; a plurality of positioning holes 23 are arranged on the support 2; the second groove 31 corresponds to the positioning hole 23; a bolt is arranged in the positioning hole 23, and when the bolt abuts against the side wall of the first rod 3, the position of the first rod 3 is fixed.

[0020] A third groove 22 is arranged on the side wall of the first groove 21; the third groove 22 is arc-shaped, and the arc-shaped circle of the third groove 22 corresponds to the rotation point 51; a third rod 52 is arranged on the second rod 5; the third rod 52 slides in the third groove 22.

[0021] The base 1 is plate-shaped, the base 1 is provided with a support 2, the support 2 is vertically arranged with the base 1, the support 2 is provided with a first rod 3, the support 2 is provided with a positioning hole 23, the positioning hole 23 is provided with a plurality of, the first rod 3 is provided with a second groove 31, the second groove 31 corresponds to the positioning hole 23, the second groove 31 is strip-shaped, the positioning block is screw-connected with a bolt until the bolt fixes the position of the first rod 3, the first rod 3 is provided with two groups of positioning holes 23, the first rod 3 is provided with a first roller 4, the support 2 is provided with a first groove 21, the first groove 21 is rotatably connected with a second rod 5, the second rod 5 is provided with a rotation point 51, the second rod 5 is L-shaped, the end surface of the second rod 5 is rotatably connected with a second roller 6, the second roller 6 corresponds to the first roller 4, and the two groups of first rollers 4 and the second rollers 6 form a measurement area, the first groove 21 is provided with an elastic element 7, one end of the elastic element 7 abuts against the second rod 5, the other end of the elastic element 7 abuts against the first groove 21, the elastic element 7 is located on the side of the second rod 5 away from the second rod 5, the support 2 is provided with a micrometer 8, the measuring end of the micrometer 8 abuts against the second rod 5, and the measuring end of the micrometer 8 corresponds to the elastic element 7, the sidewall of the first groove 21 is provided with a third groove 22, the third groove 22 is arc-shaped, the circle of the third groove 22 corresponds to the rotation point 51, the second rod 5 is provided with a third rod 52, the third rod 52 is located in the third groove 22 and slides, so as to guide the rotation of the second rod 5, first press the third rod 52 to drive the second roller 6 away from the first roller 4, so that the measurement space between the first roller 4 and the second roller 6 becomes larger, then the measured object is placed in the measurement space, then the third rod 52 is loosened, so that the first roller 4 and the second roller 6 press the sidewall of the workpiece, then the value of the micrometer 8 is read to measure the value.

[0022] Because adopt the base 1 is board, the base 1 is provided with support 2, support 2 with base 1 is vertically arranged, support 2 is provided with first rod 3, support 2 is provided with positioning hole 23, positioning hole 23 is provided with several, first rod 3 is provided with second slot 31, second slot 31 with positioning hole 23 corresponds, second slot 31 is long strip, positioning block can be screwed with bolt until the bolt will first rod 3 position fixed, first rod 3 with positioning hole 23 is oppositely provided with two groups, first rod 3 end surface is provided with first roller 4, support 2 is provided with first slot 21, first slot 21 is rotatably connected with second rod 5, second rod 5 is provided with rotation point 51, second rod 5 is L type, the end surface of second rod 5 is rotatably connected with second roller 6, second roller 6 corresponds with first roller 4 and two groups of first roller 4 and second roller 6 form measurement area, first slot 21 is provided with elastic element 7, one end of elastic element 7 abuts against second rod 5, the other end of elastic element 7 abuts against first slot 21, elastic element 7 is located on the side of second rod 5 away from second rod 5, support 2 is provided with micrometer 8, the measuring end of micrometer 8 abuts against second rod 5 and the measuring end of micrometer 8 corresponds with elastic element 7, the side wall of first slot 21 is provided with third slot 22, third slot 22 is arc, the circle of third slot 22 corresponds with rotation point 51, second rod 5 is provided with third rod 52, third rod 52 is located in third slot 22 and slides, so as to guide the rotation of second rod 5, first press third rod 52 drives second roller 6 away from first roller 4 so that the measurement space between first roller 4 and second roller 6 becomes larger, then the measured object is placed in the measurement space, then the third rod 52 is loosened, so that the first roller 4 and the second roller 6 press the sidewall of the workpiece, then the value of the micrometer 8 is read to measure the value, thereby realizing the measurement of the outer diameter of the threaded pipe.

[0023] Although the preferred embodiments of the present application have been described, those skilled in the art who, once aware of the basic inventive concept, can make further changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications falling within the scope of the present application.

[0024] Obviously, those skilled in the art can make various changes and modifications to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and changes of the present application fall within the scope of the claims of the present application and their equivalents, the present application also intends to include these changes and modifications.

Claims

1. A device for detecting external thread diameter, characterized in that: The invention comprises a base (1), a support member (2) arranged on the base (1), a first rod (3) arranged on the support member (2), a first roller (4) rotating on the end face of the first rod (3), a second rod (5) rotating in the support member (2), a second roller (6) rotating on the end face of the second rod (5), a micrometer (8) for measuring the rotation angle of the second rod (5), and an elastic member (7) for driving the second roller (6) to press the first roller (4); a first groove (21) is provided on the support member (2); the second rod (5) rotates in the first groove (21); and a second roller (6) is provided on the second rod (5). A rotation point (51) is provided; the elastic member (7) is provided on one side of the rotation point (51); the second roller (6) is provided on the other side of the rotation point (51); one end of the elastic member (7) abuts against the first groove (21), and the other end of the elastic member (7) abuts against the second rod (5); the active end of the micrometer (8) corresponds to the elastic member (7); two groups of the first roller (4) and the first rod (3) are provided opposite to each other; a measuring area is formed between the two groups of the first roller (4) and the second roller (6); the side walls of the first roller (4) and the second roller (6) correspond to the side walls of the measuring member.

2. The external thread diameter detection instrument according to claim 1, characterized in that: A second groove (31) is provided on the first rod (3); a plurality of positioning holes (23) are provided on the support member (2); the second groove (31) corresponds to the positioning holes (23); a bolt is passed through the positioning hole (23) and when the bolt abuts against the side wall of the first rod (3), the position of the first rod (3) is fixed.

3. The external thread diameter detection instrument according to claim 2, characterized in that: A third groove (22) is provided on the side wall of the first groove (21); the third groove (22) is arc-shaped, and the arc-shaped circle of the third groove (22) corresponds to the rotation point (51); a third rod (52) is provided on the second rod (5); the third rod (52) is located in the third groove (22) and slides.

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