CN215238363U

CN215238363U - Tapping machine installation screw tap is with extension structure

Info

Publication number: CN215238363U
Application number: CN202121620945.5U
Authority: CN
Inventors: 华斌; 刘少卿; 刘志锋
Original assignee: Jiangling Motors Corp Ltd
Current assignee: Jiangling Motors Corp Ltd
Priority date: 2021-07-16
Filing date: 2021-07-16
Publication date: 2021-12-21
Anticipated expiration: 2031-07-16

Abstract

The utility model belongs to the technical field of machining, in particular to an extension structure for installing a screw tap of a tapping machine, which comprises a standard quick chuck and an extension rod of the tapping machine; one end of the standard quick chuck is provided with a groove arc which is matched with a steel ball in a main shaft of the tapping machine to prevent the groove arc from falling off, the middle part of the standard quick chuck is provided with two transmission keys which are clamped with a groove on the end surface of the main shaft of the tapping machine, the other end of the standard quick chuck is provided with a square bayonet, and the outer side of the square bayonet is provided with a quick installation button; the one end of extension rod is provided with confirms side falcon, confirms side falcon can with square bayonet socket connection, be provided with the recess on the body of rod of extension rod, the other end of extension rod sets up the screw tap and presss from both sides the cover and the cooperation has the nut. The utility model discloses effectual improvement installation stability, high reliability, and easy preparation, facilitate the use, with low costs, the effect is obvious.

Description

Tapping machine installation screw tap is with extension structure

Technical Field

The utility model belongs to the technical field of machining, concretely relates to tapping machine installation is extension structure for screw tap.

Background

Tapping is a very important processing mode of connecting parts in machining, and is a necessary process of a connecting mode capable of being repeatedly disassembled and assembled; generally, the thread is processed on the equipment after the thread bottom hole is processed; in order to save the processing time on the drilling equipment, a plurality of enterprises adopt tapping to process on the electric tapping machine, so that the threads can be synchronously processed when the holes are processed, the overall processing efficiency is improved, and the processing process of the electric tapping machine is visually observed by workers, when the torque protection of the tapping machine is acted, an alarm sound is given out and abnormal sounds generated after the screw tap is worn are processed, the operators can immediately find and replace the screw tap and the like, the bad phenomena of screw tap breakage and the like are avoided, and the loss of cost and efficiency of screw tap breakage and the like is effectively reduced; so that the tapping machine is used for machining the internal thread at present to be popularized in the industry at high speed.

While tapping machines are increasingly being used, not all workpieces are suitable for use on existing electric tapping machines; the steering knuckle is an important steering part on an automobile, the steering knuckle of the national six standard light truck processed by our factory needs to be threaded in a narrow space, and because of a plurality of processing procedures, the threads are separated from numerical control equipment and are processed by an electric tapping machine. The tapping position of the product is in a narrow space, the interference diameter is required to be less than 28mm, the extending length is as long as 135mm, and the installation resources of the existing cutter have great constraints on the processing: although the quick chuck of the electric tapping machine can clamp from m6-24, the tap can be installed in a mode that the tap is installed in a mode that the diameter of the tap installed at the handle part and the front end is the same and the tap is locked by a plurality of side screws, the tap falls off, the installation position of the extension rod is broken and the like in use, the cost, the quality and the capacity are lost, and the normal machining is difficult in practice.

There are several significant problems with the existing prior art extension pole: 1. the handle of the extension rod and the installed screw tap are of one size, the threads of the parts are M12 multiplied by 1.25, the diameter of the handle is 9mm, and the diameter of the extension rod is also 9mm, so that the rigidity of the whole extension rod is weak, and the extension rod is broken at the root of the installation handle of the extension rod after being processed for several pieces; 2. the space of the part is not fully utilized, the part can be only ensured to be absolutely inserted into the workpiece, and the most precious mounting reliability is lost; from the procured extension rod, the outer diameter is only 15mm, the single side is only 3mm, and no rigidity can be mentioned; 3. the way of locking the tap is also influenced by the above reasons, and the tap can only be locked by 4M 4 screws with the length of only 3mm, but the problems of the opposite locking tap are many, and the most obvious problem is that: the installation is jumped greatly, drops in the processing, has seriously influenced machining efficiency.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem, the utility model provides a rigidity is better, and stability is splendid, and processing is stable, and the delivery of product has been accomplished to the mode with extremely low costs. The specific technical scheme is as follows:

an extension structure for installing a screw tap of a tapping machine is as follows: the structure comprises a standard quick chuck and an extension rod of a tapping machine; one end of the standard quick chuck is provided with a groove arc which is matched with a steel ball in a main shaft of the tapping machine to prevent the groove arc from falling off, the middle part of the standard quick chuck is provided with two transmission keys which are clamped with a groove on the end surface of the main shaft of the tapping machine, the other end of the standard quick chuck is provided with a square bayonet, and the outer side of the square bayonet is provided with a quick installation button; the one end of extension rod is provided with confirms side falcon, confirms side falcon can with square bayonet socket connection, be provided with the recess on the body of rod of extension rod, the other end of extension rod sets up the screw tap and presss from both sides the cover and the cooperation has the nut.

Further, be provided with the square hole in the screw tap cover, this square hole cooperates with the side falcon of screw tap.

The utility model discloses a 3 important changes have been made on the basis of original extension rod structure: 1. the joint with the quick connector adopts a large handle installation diameter; 2. an extension rod structure with small gap with the side wall of the workpiece is adopted; 3. and installing a screw tap by adopting an ER nut mode. The mounting stability and the high reliability are effectively improved, and the device is easy to manufacture, convenient to use, low in cost and obvious in effect.

Drawings

FIG. 1 is a schematic view of a prior art extension pole;

FIG. 2 is a schematic view of a prior art extension pole thread tapping;

FIG. 3 is a schematic view of the extension rod of the present invention;

fig. 4 is a schematic view of the tapping of the extension rod of the present invention.

Reference numerals:

the quick clamping tool comprises a 1-standard quick clamping head, 2-quick mounting buttons, 3-definite square tenons, 4-extension rods, 5-grooves, 6-tap clamping sleeves, 7-nuts and 8-taps.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

As shown in fig. 3: an extension structure for installing a screw tap of a tapping machine is as follows: the structure comprises a standard quick chuck 1 and an extension rod 4 of a tapping machine; one end of the standard quick chuck 1 is provided with a groove circular arc 9, the groove circular arc 9 is matched with a steel ball in a main shaft of a tapping machine to prevent the groove circular arc 9 from falling off, the middle part of the standard quick chuck 1 is provided with two transmission keys 10, the transmission keys 10 are clamped with grooves in the end face of the main shaft of the tapping machine, the other end of the standard quick chuck 1 is provided with a square bayonet, and the outer side of the square bayonet is provided with a quick installation button 2; extension rod 4's one end is provided with confirms side falcon 3, confirms side falcon 3 can with square bayonet connection, be provided with recess 5 on extension rod 4's the body of rod, extension rod 4's the other end sets up the screw tap and presss from both sides cover 6 and the cooperation has nut 7. The screw tap presss from both sides and is provided with the square hole in the cover 6, and this square hole cooperates with 8 square falcon of screw tap.

When the connecting device is used, after the cylindrical part on the standard quick chuck 1 of the tapping machine is plugged into the main shaft of the tapping machine, the circular arc 9 is clamped by a steel ball (not shown in the figure) in the main shaft to prevent the circular arc from falling off, and two transmission keys 10 for transmitting torque are clamped by a groove (not shown in the figure) on the end surface of the main shaft to complete the connection of the quick chuck and the main shaft; the connection of the extension rod and the screw tap: loosening the ER nut 7, clamping the ER tap jacket 6 in a clamping groove of the nut 7, then placing the nut 7 and the tap jacket 6 in a taper hole of the extension rod 4, plugging the tap 8 into the hole of the ER tap jacket, and screwing the ER nut after ensuring that the square tenon is matched with the square hole in the ER tap jacket to complete the connection of the extension rod and the tap; the square tenon structure for transmitting torque on the extension rod body 4 is inserted into a mounting hole (not shown in the figure) on the quick chuck 1 of the tapping machine, the quick mounting button 2 is pressed, the square tenon 3 is determined to be connected with a square bayonet (not shown in the figure) in the body, the button 2 is loosened, the connection of the extension rod and the quick chuck is completed, and the thread machining is started. The groove 5 is used for screwing or unscrewing the ER nut 7 and replacing the screw tap after the groove is clamped when the screw tap is disassembled and assembled.

The quick-change tapping machine is characterized in that a quick-change chuck for tapping larger threads is mounted on a main shaft of a tapping machine, an ER straight shank extension bar with a square tenon at the tail end is mounted on the tapping chuck, an ER screw tap jacket is arranged at the front end, a screw tap is plugged into the ER screw tap jacket after the screw tap jacket is pre-mounted by a nut, the screw tap is locked on the extension bar after the screw tap is rotated, then the square tenon at the rear end of the ER straight shank extension bar is inserted into a square hole in the quick-change chuck, the mounting of the screw tap is completed, and the subsequent machining is started according to the normal operation of the tapping machine. The performance in processing is as follows: in the original mode of installing the M12 screw tap on the extension rod, the screw tap and the extension rod are obviously not coaxial when the main shaft rotates before processing; in the machining process, the cutting scraps of the screw tap are obviously different and large, one side is more, the other side is less, the cutting scraps are more, the chip discharge groove can be blocked, and after 4 holes are machined, abnormal phenomena such as screw tap separation, handle breakage, screw tap tipping and the like occur; the invention has the advantages of smooth processing, normal chip discharge, stable screw tap processing process, smooth hole wall and good size, and M12 can normally process more than 200 holes. The product is quickly and reliably finished, and the processing cost of the flange thread of the part is reduced by dozens of times.

Although the preferred embodiments of the present patent have been described in detail, the present patent is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present patent within the knowledge of those skilled in the art.

Claims

1. The utility model provides a tapping machine installation screw tap is with extension structure which characterized in that: the structure comprises a standard quick chuck (1) and an extension rod (4) of a tapping machine; one end of the standard quick chuck (1) is provided with a groove arc (9), the groove arc (9) is matched with a steel ball in a tapping machine spindle to prevent the groove arc from falling off, the middle part of the standard quick chuck (1) is provided with two transmission keys (10), the transmission keys (10) are clamped with a groove in the end face of the tapping machine spindle, the other end of the standard quick chuck (1) is provided with a square bayonet, and the outer side of the square bayonet is provided with a quick installation button (2); the one end of extension rod (4) is provided with confirms side falcon (3), confirms side falcon (3) can with square bayonet connection, be provided with recess (5) on the body of rod of extension rod (4), the other end of extension rod (4) sets up the screw tap and presss from both sides cover (6) and the cooperation has nut (7).

2. The tapping machine tap mounting extension structure of claim 1, wherein: the screw tap is provided with a square hole in the clamping sleeve (6), and the square hole is matched with a square tenon of the screw tap (8).