A threaded hole tapping and positioning tool for the vertical busbar of a conical cabin

Abstract

A tapping and positioning tool for threaded holes of a tapered cabin body perpendicular to the busbar, characterized in that it comprises a guide frame (2) and a positioning pin (3), wherein the guide frame (2) comprises a tapered tube annular portion (21), and a first strip plate (22) and a second strip plate (23) extending upward from the tapered tube annular portion (21); wherein the first strip plate (22) and the second strip plate (23) are respectively parts of the tapered tube shape, and the first strip plate (22) and the second strip plate (23) are centrally symmetrical structures centered on the central axis of the tapered tube; the present invention solves the problem that manual tapping of threaded holes of a tapered cabin body perpendicular to the busbar is often crooked, and a fitter can use the positioning hole on the guide frame as a tap guide to directly tap with two tapers without the need for centering the head taper, and the manual tapping efficiency is increased by 1 times, which has certain reference significance for the design of manual tapping and positioning tooling for threaded holes of such cabin bodies.

Description

Technical Field

[0001] The invention discloses a threaded hole tapping positioning tool for a vertical busbar of a tapered cabin body, which is used for realizing efficient tapping of the threaded hole of the vertical busbar of the tapered cabin body. Background Art

[0002] At present, the threaded holes perpendicular to the generatrix on the conical cabin body are mainly processed by five-axis machine tools and then tapped manually with a bench tap. When tapping with a tap, the bench tapper must process in the order of a head tap, a second taper, or even a third taper. The front end of the head taper has a guide to center the thread and prevent the thread from being distorted. However, there are two main problems with the bench tapping of the threaded holes perpendicular to the generatrix on the conical cabin body:

[0003] (1) The tapping process of the first cone, second cone, and even third cone is cumbersome and inefficient;

[0004] (2) After the head cone is centered, the threaded hole often still has the problem of being distorted, especially when the aluminum alloy cabin material is relatively soft and is very easy to be distorted.

[0005] (3) The tapping quality of the threaded holes of the conical cabin perpendicular to the generatrix is ​​poor, which affects the quality of the entire conical cabin.

[0006] (4) The job requires high skills, so there are very few people who can do this job, which sometimes affects the production process. Summary of the invention

[0007] The purpose of the invention is to provide a threaded hole tapping positioning tool for a vertical busbar of a tapered cabin body, so that the tapping quality of the threaded hole of the vertical busbar of the tapered cabin body is guaranteed.

[0008] A threaded hole tapping positioning tool for a vertical busbar of a tapered cabin, characterized in that it includes a guide frame 2 and a positioning pin 3, wherein the guide frame 2 includes a tapered tube ring portion 21, and a first strip plate 22 and a second strip plate 23 extending upward from the tapered tube ring portion 21; wherein the first strip plate 22 and the second strip plate 23 are respectively parts of the tapered tube shape, and the first strip plate 22 and the second strip plate 23 are centrally symmetrical structures with the central axis of the tapered tube as the center; the taper of the tapered tube ring portion 21 is the same as the taper of the tapered cabin 1 to be threaded; a first ear 25 perpendicular to the central axis is connected to the inner side of the upper end of the first strip plate 22, and a second ear 26 perpendicular to the central axis is connected to the inner side of the upper end of the second strip plate 23, and ear pin holes 27 are respectively provided on the first ear 25 and the second ear 26; a plurality of positioning holes 28 are provided on the tapered tube ring portion 21, and the positioning holes 28 correspond to the threaded bottom holes 12 on the tapered cabin 1;

[0009] When in use, the end of the conical cabin body 1 with a smaller diameter faces upward, and the guide frame 2 is sleeved on the conical cabin body 1, so that the lower surfaces of the first ear 25 and the second ear 26 are in contact with the small end surface of the conical cabin body 1, and the ear pin holes 27 on the first ear 25 and the second ear 26 of the guide frame 2 are aligned with the two pin holes 11 at the upper end of the conical cabin body 1, and the ear pin holes 27 on the first ear 25 and the second ear 26 are fixedly connected with the two pin holes 11 at the upper end of the conical cabin body 1 by two positioning pins 3;

[0010] When the ear pin holes 27 on the first ear 25 and the second ear 26 are fixedly connected with the two pin holes at the upper end of the conical cabin body 1, there is a set distance between the inner wall of the conical tube ring part 21 and the conical cabin body 1, and the multiple positioning holes 28 on the conical tube ring part 21 correspond one by one to the multiple threaded bottom holes 12 on the side wall of the conical cabin body 1, and the central axes of the corresponding positioning holes 28 and the threaded bottom holes 12 are on a straight line.

[0011] The distance between the inner wall of the tapered tube annular portion 21 and the tapered cabin body 1 is 1.5 mm to 3 mm.

[0012] The optimal distance between the inner wall of the tapered tube annular portion 21 and the tapered cabin body 1 is 2 mm.

[0013] In the present invention, the small end of the tapered cabin body is placed upward, the guide frame is sleeved on the small end of the tapered cabin body, the lower surface of the support ear is fitted with the small end surface of the tapered cabin body, and two positioning pins are sequentially passed through the pin hole on the guide frame support ear and the pin hole on the small end surface of the tapered cabin body, so as to ensure that the positioning hole on the guide frame is coaxial with the threaded bottom hole on the tapered cabin body. The fitter's tap passes through the positioning hole on the guide frame as a guide for tapping, which can effectively avoid the occurrence of "tapped" thread phenomenon, and because there is a 2-3mm gap between the tapered inner cavity of the guide frame and the outer surface of the tapered cabin body, the chips from tapping can be discharged smoothly.

[0014] The present invention solves the problem that manual tapping of threaded holes in a tapered cabin body perpendicular to the busbar is often skewed, and the fitter can use the positioning holes on the guide frame as tap guides to directly tap with two tapers without the need for head tap centering, thereby increasing the manual tapping efficiency by 1 times. This invention has certain reference significance for the design of manual tapping positioning tooling for threaded holes in such cabin bodies. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of the conical cabin 1;

[0016] Figure 2 It is a schematic diagram of a conical cabin 1 with a smaller diameter end facing upwards;

[0017] Figure 3 It is a schematic diagram of the guide frame of the present invention;

[0018] Figure 4This is a schematic diagram of the positioning pin of the present invention;

[0019] Figure 5 This is a state decomposition diagram of the present invention;

[0020] Figure 6 This is a schematic diagram of the use state of the present invention;

[0021] Figure 7 This is a schematic diagram of the guide frame structure of the present invention;

[0022] Figure 8 It is a schematic diagram of the structure of the conical cabin 1;

[0023] Among them, 1 is a conical cabin, 2 is a guide frame, 3 is a positioning pin, 11 is a pin hole, 12 is a threaded bottom hole, 21 is a conical tube annular portion, 22 is a first strip plate, 23 is a second strip plate, 25 is a first ear, 26 is a second ear, 27 is an ear pin hole, and 28 is a positioning hole. DETAILED DESCRIPTION

[0024] A threaded hole tapping positioning tool for a vertical busbar of a tapered cabin, characterized in that it includes a guide frame 2 and a positioning pin 3, wherein the guide frame 2 includes a tapered tube ring portion 21, and a first strip plate 22 and a second strip plate 23 extending upward from the tapered tube ring portion 21; wherein the first strip plate 22 and the second strip plate 23 are respectively parts of the tapered tube shape, and the first strip plate 22 and the second strip plate 23 are centrally symmetrical structures with the central axis of the tapered tube as the center; the taper of the tapered tube ring portion 21 is the same as the taper of the tapered cabin 1 to be threaded; a first ear 25 perpendicular to the central axis is connected to the inner side of the upper end of the first strip plate 22, and a second ear 26 perpendicular to the central axis is connected to the inner side of the upper end of the second strip plate 23, and ear pin holes 27 are respectively provided on the first ear 25 and the second ear 26; a plurality of positioning holes 28 are provided on the tapered tube ring portion 21, and the positioning holes 28 correspond to the threaded bottom holes 12 on the tapered cabin 1;

[0025] When in use, the end of the conical cabin body 1 with a smaller diameter faces upward, and the guide frame 2 is sleeved on the conical cabin body 1, so that the lower surfaces of the first ear 25 and the second ear 26 are in contact with the small end surface of the conical cabin body 1, and the ear pin holes 27 on the first ear 25 and the second ear 26 of the guide frame 2 are aligned with the two pin holes 11 at the upper end of the conical cabin body 1, and the ear pin holes 27 on the first ear 25 and the second ear 26 are fixedly connected with the two pin holes 11 at the upper end of the conical cabin body 1 by two positioning pins 3;

[0026] When the ear pin holes 27 on the first ear 25 and the second ear 26 are fixedly connected with the two pin holes at the upper end of the conical cabin body 1, there is a set distance between the inner wall of the conical tube ring part 21 and the conical cabin body 1, and the multiple positioning holes 28 on the conical tube ring part 21 correspond one by one to the multiple threaded bottom holes 12 on the side wall of the conical cabin body 1, and the central axes of the corresponding positioning holes 28 and the threaded bottom holes 12 are on a straight line.

[0027] The distance between the inner wall of the tapered tube annular portion 21 and the tapered cabin body 1 is 1.5 mm to 3 mm.

[0028] The optimal distance between the inner wall of the tapered tube annular portion 21 and the tapered cabin body 1 is 2 mm.

[0029] Example:

[0030] A threaded hole tapping and positioning tool for a vertical busbar of a tapered cabin comprises a guide frame and two positioning pins.

[0031] The guide frame is a conical frame structure both inside and outside, and its taper is the same as that of the cabin body. Two ears perpendicular to the center line of the guide frame extend from the small end, and there are two pin holes on the ears. The aperture and position distribution of the pin holes are consistent with the pin holes used for docking on the small end face of the conical cabin body, and weight reduction treatment has been done on both sides of the ears; there is a positioning hole on the guide frame that is coaxial with the threaded hole on the conical cabin body, and the aperture of the positioning hole is 0.04 to 0.08 mm larger than the major diameter of the internal thread, which is used to position the tap; the conical inner cavity space of the guide frame is 2 to 3 mm larger than the single side of the outer surface of the conical cabin body.

[0032] The positioning pin is a cylindrical step pin made of wear-resistant steel. A 15-degree chamfer is left on one side of the small cylindrical head, and the large end is used as a hand handle. The positioning pin cooperates with the pin hole on the small end of the conical cabin, and the matching clearance is 0.01 to 0.03 mm.

[0033] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art. However, it should be noted that the purpose of publishing the embodiments is to help further understand the present invention. Various substitutions and modifications are possible without departing from the spirit and scope of the present invention and the attached claims. Therefore, the present invention should not be limited to the contents disclosed in the embodiments, and the scope of the present invention to be protected shall be subject to the scope defined in the claims.

[0034] Figure 1-2 The outer surface of the conical cabin 1 shown has four M8 threaded holes perpendicular to the busbar, and the small end of the cabin has two Φ8 pin holes for docking. Figure 3-4 The figure shows a tapping and positioning tool for a taper-shaped cabin vertical busbar threaded hole, which is composed of a guide frame 2 and a positioning pin 3; Figure 3The guide frame 2 shown is a conical frame structure inside and outside, and its taper is the same as that of the cabin. Two ears extending from the small end are perpendicular to the center line of the guide frame 2. There are two pin holes on the ears. The diameter and position distribution of the pin holes are consistent with the two Φ8 pin holes on the small end face of the conical cabin 1. The two sides of the ears have been treated to reduce weight. There are 4 positioning holes on the guide frame 2 that are coaxial with the 4 M8 threaded holes on the conical cabin 1. The diameter of the positioning holes is 8.05mm and is used to position the tap. The conical inner cavity space of the guide frame 2 is 2mm larger than the single side of the outer surface of the conical cabin 1; Figure 4 The positioning pin 3 shown is a cylindrical step pin made of wear-resistant steel, with a 15-degree chamfer on one side of the small cylindrical head and the large end serving as a hand-held handle. The positioning pin 3 cooperates with the pin hole on the small end of the conical cabin 1 with a clearance of 0.02 mm.

[0035] like Figure 5-6 As shown, when the positioning fixture is used, the small end of the tapered cabin body 1 is placed upward, the guide frame 2 is sleeved on the small end of the tapered cabin body 1, the lower surface of the support ear is fitted with the small end surface of the tapered cabin body 1, and two positioning pins 3 are passed through the pin holes on the support ears of the guide frame 2 and the pin holes on the small end surface of the tapered cabin body 1 in sequence, so as to ensure that the positioning hole on the guide frame 2 is coaxial with the threaded bottom hole on the tapered cabin body 1, and the fitter's tap passes through the positioning hole on the guide frame 2 as a guide for tapping, which can effectively avoid the occurrence of "tapped" thread phenomenon, and because there is a 2mm gap between the tapered inner cavity of the guide frame 2 and the outer surface of the tapered cabin body 1, the chips from tapping can be discharged smoothly.

Claims

1. A threaded hole tapping and positioning tool for a vertical busbar of a conical cabin, characterized in that: The invention comprises a guide frame (2) and a positioning pin (3), wherein the guide frame (2) comprises a tapered tube annular portion (21), a first strip plate (22) and a second strip plate (23) extending upward from the tapered tube annular portion (21); wherein the first strip plate (22) and the second strip plate (23) are respectively a part of the tapered tube shape, and the first strip plate (22) and the second strip plate (23) are a centrally symmetrical structure with the central axis of the tapered tube as the center; the taper of the tapered tube annular portion (21) is consistent with the taper of the threaded hole to be tapped. The conical cabin (1) of the thread has the same taper; a first ear (25) perpendicular to the central axis is connected to the inner side of the upper end of the first strip plate (22); a second ear (26) perpendicular to the central axis is connected to the inner side of the upper end of the second strip plate (23); the first ear (25) and the second ear (26) are respectively provided with ear pin holes (27); the conical tube annular portion (21) is provided with a plurality of positioning holes (28), and the positioning holes (28) correspond to the threaded bottom holes (12) on the conical cabin (1); When in use, the end of the conical cabin body (1) with a smaller diameter faces upwards, and the guide frame (2) is placed on the conical cabin body (1), so that the lower surfaces of the first support ear (25) and the second support ear (26) are in contact with the small end surface of the conical cabin body (1), and the support ear pin holes (27) on the first support ear (25) and the second support ear (26) of the guide frame (2) are aligned with the two pin holes (11) at the upper end of the conical cabin body (1), and the support ear pin holes (27) on the first support ear (25) and the second support ear (26) are fixedly connected with the two pin holes (11) at the upper end of the conical cabin body (1) by two positioning pins (3); When the ear pin holes (27) on the first ear (25) and the second ear (26) are fixedly connected to the two pin holes on the upper end of the conical cabin body (1), a set distance is provided between the inner wall of the conical tube annular portion (21) and the conical cabin body (1), and the plurality of positioning holes (28) on the conical tube annular portion (21) correspond one-to-one to the plurality of threaded bottom holes (12) on the side wall of the conical cabin body (1), and the central axes of the corresponding positioning holes (28) and the threaded bottom holes (12) are on a straight line; During operation, since the positioning hole (28) on the guide frame (2) is coaxial with the threaded bottom hole (12) on the conical cabin body (1), the fitter's tap passes through the positioning hole (28) on the guide frame (2) as a guide for tapping, which can effectively avoid the occurrence of the phenomenon of "tap crooked" thread.

2. A threaded hole tapping and positioning tool for a vertical busbar of a tapered cabin according to claim 1, characterized in that: The distance between the inner wall of the conical tube annular part (21) and the conical cabin body (1) is 1.5 mm to 3 mm.

3. The threaded hole tapping and positioning tool for the vertical busbar of a conical cabin according to claim 1, characterized in that: The optimal distance between the inner wall of the conical tube annular portion (21) and the conical cabin body (1) is 2 mm.

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