CN210412909U

CN210412909U - A general tapping instrument for processing blind area

Info

Publication number: CN210412909U
Application number: CN201921212553.8U
Authority: CN
Inventors: 匡赞新; 唐再章; 熊香冠
Original assignee: Zhuzhou Electric Locomotive Pneumatic Equipment Co ltd; Hunan Lince Rolling Stock Equipment Co Ltd
Current assignee: Zhuzhou Electric Locomotive Pneumatic Equipment Co ltd; Hunan Lince Rolling Stock Equipment Co Ltd
Priority date: 2019-07-30
Filing date: 2019-07-30
Publication date: 2020-04-28
Anticipated expiration: 2029-07-30

Abstract

The utility model provides a general tapping instrument for processing blind area. Comprises a screw tap, a nut and a ratchet wrench; the square tenon end of the screw tap is in interference fit with the inner ring of the nut; the size of the head of the nut is matched with that of the clamping ring groove of the ratchet wrench; the ratchet wrench is sleeved on the nut. The utility model has simple structure, easy manufacture of parts, low cost and strong universality; the utility model drives the screw tap to tap by the tightness operation of the nut, has the characteristics of strong applicability and convenient use, reduces the working intensity of operators and improves the working efficiency; the tapping tool can lead the screw tap to obtain uniform tapping speed and uniform rotating force at the same time, reduce the risk of thread breakage, improve the quality of tapping threads and prolong the service life of the screw tap; the head position of the nut is sleeved by the ratchet wrench, so that tapping can be smoothly carried out in a blind area, the quality requirement is met, and the problem that tapping cannot be carried out in the narrow or difficult-to-approach blind area position is solved.

Description

A general tapping instrument for processing blind area

Technical Field

The utility model relates to a machining technical field, concretely relates to a general tapping instrument for processing blind area.

Background

In various cabinets of rail vehicles, particularly electrical cabinets, a plurality of threaded holes with different thread specifications, welding nuts and the like are arranged in different areas of the cabinet, and the threads of the welding nuts are affected due to overheating in the welding process; and the product does not achieve effective protection in the manufacturing process, for example, the thread shield in the paint process is not in place, residues generated in the paint process influence the thread, and the tapping of the threaded hole and the welded nut after the paint process needs to be increased to ensure that the quality of the thread meets the follow-up assembly requirement.

Usually, an adjustable wrench or a small tap wrench is used for clamping the square tenon of the tap and then tapping, and when the tap is operated, the direction of the wrench needs to be adjusted again for fixing the tap every half turn of the wrench. Meanwhile, due to the influence of other structures on the periphery of the cabinet body, the operation in a very narrow space is inconvenient, time and labor are wasted, the wire is easily broken due to uneven stress of the screw tap, the rework period is long, and the production process of the product is delayed. The method for clamping the square tenon tapping by adopting the adjustable wrench or the tap wrench not only has low production efficiency and influences the delivery process of products, but also has very high risk of thread breakage, and particularly has no movable space of the tap wrench at a blind area position, so the method can not tap in place.

Chinese patent 201420490949.X discloses a manual spot facing work specialized tool, and this manual spot facing work specialized tool includes top, handle, thrust bearing, ratchet spanner bracing piece, cutter holder and drill bit or screw tap, top one end is conical, and top other end and thrust bearing one end threaded connection, ratchet spanner bracing piece one end and thrust bearing other end fixed connection, the drill bit stalk portion or the screw tap stalk portion and the cutter holder fixed connection that stretch into in the cutter holder other end. An operator puts the tool into an inner cavity of a large box casting needing drilling or tapping, holds the ratchet wrench supporting rod by one hand, holds the handle on the tip by the other hand, pulls the handle to keep continuous axial jacking force required by drilling or tapping, and pushes the ratchet wrench rotating tool back and forth to complete tapping. This manual spot facing work specialized tool need not the fixed screw tap side tenon of joint repeatedly, nevertheless has the great problem of spare part more and screw tap axial direction part size, is unfavorable for operating at narrow space and blind area, and on the other hand, the during operation needs both hands to operate, produces the influence to operating space and easy and simple to handle nature.

In view of the above, there is an urgent need for a universal tapping tool for machining blind areas to solve the problems in the prior art.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a general tapping instrument for processing blind area to solve cabinet body blind area tapping difficulty problem.

In order to achieve the purpose, the utility model provides a general tapping tool for processing blind areas, which comprises a screw tap, a nut and a ratchet wrench; the square tenon end of the screw tap is in interference fit with the inner ring of the nut; the size of the head of the nut is matched with that of the clamping ring groove of the ratchet wrench; the ratchet wrench is sleeved on the nut.

Preferably, one end of the screw tap is a tapping end, the other end of the screw tap is a square tenon end, and the end face of the square tenon end is parallel to the end face of the nut.

Preferably, the nut is a common national standard 8.8-grade carbon steel nut.

Preferably, the ratchet wrench handle axis is perpendicular to the tap axis.

Use the technical scheme of the utility model, following beneficial effect has:

(1) the utility model discloses in, a general tapping instrument for processing blind area simple structure, spare part is easily made, and is with low costs, and the commonality is strong, can make M3 to M10's tapping instrument as required.

(2) The utility model discloses in, adopt ratchet spanner to entangle nut head position and carry out the tapping, ratchet spanner adjustable handle can conveniently adjust spanner use angle. The wrench drives the screw tap to tap by the tightness operation of the nut, and has the characteristics of strong applicability and convenient use. Can replace the adjustable spanner that originally adopts usually or small-size tap spanner to block the screw tap side's tenon and carry out the tapping, the mode that the tapping was carried out to the spanner every rotatory half-turn needs readjustment direction again during the operation, greatly reduced operating personnel's working strength and improved more than 50% work efficiency.

(3) The utility model discloses in, use this instrument tapping can make the screw tap obtain even tapping speed and even revolving force simultaneously, reduce the broken silk risk, improve tapping screw thread quality and screw tap life.

(4) The utility model discloses in, this tapping tool flexible operation adopts ratchet spanner to entangle nut head position and can carry out the tapping smoothly in any space in the box and the blind area of no follow lower hand to reach the requirement for quality, solve the problem of the unable tapping of narrow or blind area position that is difficult to be close.

In addition to the above-described objects, features and advantages, the present invention has other objects, features and advantages. The present invention will be described in further detail with reference to the drawings.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification. In the drawings:

fig. 1 is a front view of a general tapping tool for machining blind areas.

Wherein, 1, screw tap, 2, nut, 3, ratchet spanner.

Detailed Description

The embodiments of the invention will be described in detail hereinafter with reference to the accompanying drawings, but the invention can be implemented in many different ways, which are defined and covered by the claims.

Referring to fig. 1, a general tapping tool for processing blind area, this embodiment is applied to the tapping of regulator cubicle cabinet body blind area.

A general tapping tool for processing blind areas comprises a screw tap 1, a nut 2 and a ratchet wrench 3; the square tenon end of the screw tap 1 is in interference fit with the inner ring of the nut 2; the size of the head of the nut 2 is matched with that of a clamping ring groove of the ratchet wrench 3; the ratchet wrench 3 is sleeved on the nut 2.

In this embodiment, 1 one end of screw tap is the tapping end, and the other end is the square tenon end, and square tenon end face is parallel with 2 terminal surfaces of nut, 1 of screw tap is the standard screw tap transformation system, only needs to grind the square tenon terminal surface of screw tap 1 flat, and simple manufacture can select the standard screw tap transformation system according to actual need, accomplishes M3 to M10 screw tapping.

In the embodiment, the nut 2 is a common national standard 8.8-grade carbon steel nut, further processing is not needed, and a proper nut size can be selected according to the outer diameter of the square tenon.

In this embodiment, 3 handle axis of ratchet spanner is perpendicular with 1 axis of screw tap, can adjust the spanner angle of use through 3 movable handle of ratchet spanner in a flexible way conveniently, need not place again and counterpoint with the nut for the elasticity operation suitability of nut is strong, convenient to use. The screw tap can be operated uniformly, so that the screw tap is stressed uniformly and is not easy to break.

The general tapping tool tapping operation for machining the blind area comprises the following steps:

the method comprises the following steps: selecting a proper standard screw tap according to the requirement, and grinding the square tenon end to form a required screw tap 1;

step two: selecting a nut 2 with a proper specification, and installing the square tenon end of the screw tap 1 into the inner ring of the nut 2 to form interference fit between the square tenon end and the nut 2;

step three: the ratchet wrench 3 is sleeved at the head of the nut 2 through the clamping ring groove, the tapping end of the screw tap 1 is placed at the position needing tapping, and the ratchet wrench 3 is rotated back and forth uniformly to tap.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A general tapping tool for processing blind areas is characterized by comprising a screw tap (1), a nut (2) and a ratchet wrench (3); the square tenon end of the screw tap (1) is in interference fit with the inner ring of the nut (2); the size of the head of the nut (2) is matched with that of a snap ring groove of the ratchet wrench (3); the ratchet wrench (3) is sleeved on the nut (2).

2. The universal tapping tool for blind spot machining according to claim 1 wherein the tap (1) has one end being a tapping end and the other end being a square tenon end, the end face of the square tenon end being parallel to the end face of the nut (2).

3. The universal tapping tool for blind machining areas according to claim 2 wherein the nut (2) is a plain national standard 8.8 grade carbon steel nut.

4. The universal tapping tool for blind hole machining according to claim 3 wherein the axis of the handle of the ratchet wrench (3) is perpendicular to the axis of the tap (1).