CN2289637Y

CN2289637Y - Friction welding sleeve

Info

Publication number: CN2289637Y
Application number: CN 97215233
Authority: CN
Inventors: 黄月英
Original assignee: Individual
Current assignee: Individual
Priority date: 1997-04-21
Filing date: 1997-04-21
Publication date: 1998-09-02
Anticipated expiration: 2007-04-21

Abstract

The utility model relates to a tooth inlaid type friction welding clamp sleeve, which is used as a clamping device for friction welding. The utility model adopts high-temperature resistant and abrasion resistant alloy tool steel material to make a trivalve tool which is inlaid in an outward tapered trivalve clamp sleeve with an inner round hole. The trivalve tool and the trivalve clamp sleeve are connected and fixed into a trivalve spring clamp sleeve by screws. The trivalve tool can clamp steel balls. When a main shaft of a machine tool rotates a welded piece push rod at high speed, the welded piece push rod contacts the steel balls and rubs against the steel balls till the steel balls glow and melt. The trivalve tool and the trivalve clamp sleeve are combined, and the welding process is completed. The utility model has certain elasticity, wear resistance, certain hardness, red heat resistance, and service efficiency which is 25 times of the service efficiency the existing clamping device.

Description

A kind of friction welding (FW) chuck

The utility model relate to friction welding (FW) chuck, be used for the frock clamp of friction welding (FW).

Parts in past 6110 diesel engine--push rod joint portion, be by integrally welded (its welding sequence is that the model by Changchun welding machine factory is that the welding machine lathe of C-2.5A-1 type is finished) by steel ball, push rod, bowl seat three, by the chuck of welding machine main shaft clamp steel ball or bowl seat at a high speed rotation and workpiece push rod rub mutually produce high heat to rubescent, melt, its workpiece is combined, because main shaft rotates at a high speed, 2014 rev/mins of turn ups, cutting speed is 63.24 meters/minute, and the steel ball material is GC _R315, HRC64～65, so to the requirement of chuck than higher, need certain elasticity, hardness, wearability and anti-red heat, originally the chuck that uses adopts the monolithic devices structure, and high speed steel material is though its red heat is good, but disconnected leg, manufacturing price height often take place in poor flexibility, use 60Si2M instead _nSteel, though good springiness, but anti-red heat with wear no resistance, though using tool steel T10 hardness instead improves, but not anti-red heat, and heat treatment easily cracks, and therefore a chuck on average can only use 2000 workpiece to scrap in the past, so both waste material, wasted fund, strengthened cost, influenced efficient again.

In view of the deficiency of above-mentioned technology, the utility model provides a kind of can realize its hardness height, wearability friction welding (FW) chuck good, particularly anti-red heat.

The purpose of this utility model can realize by following technical proposals, it comprises the jacket body 2 of former three lobe shapes, one end of jacket body 2 and machine tool chief axis are with spiral marking connection, its cylindrical and awl circle and spindle jacket location, its improved design is that circle has that the matched in clearance material is hard in jacket body 2, high-wearing feature and the corresponding cylinder of anti-red heat open three claw teeth 3 and by screw its chuck 2 and cat's paw 3 are linked fixingly, constitutes the formula three-jaw spring chuck of having a denture made.Cat's paw's 3 inner hole surface and workpiece--steel ball 4 is a matched in clearance, the cat's paw is the three lobe shapes that cylinder is milled, when lathe stops, the chuck releasing orientation is put into the cat's paw to steel ball 4, start lathe then, at this moment three-jaw spring chuck moves from right to left and is tightened up by cone, three-jaw spring clip cover clamping work pieces--steel ball 4, then main shaft rotates at a high speed, welded piece--push rod moves contact steel ball 4 from right to left simultaneously at this, carries out the high-speed friction heating mutually to red, fusing, the disome combination, machine tool chief axis stall then, at this moment three-jaw spring chuck moves from left to right, three-jaw spring chuck Outer Taper is unclamped, and welded piece takes off, and finishes welding sequence, the material of chuck of three-pawl type of having a denture made is to adopt the alloy tool steel class, this three-pawl type spring chuck, easy to use, also satisfy material and welding performance requirement, the cat's paw is that groundwork is partly worked and only needed to change cat's paw 3 after the abrasion and get final product, and using the service efficiency of one pair of cat's paw's formula chuck of checking through reality is 25 times of the chuck raisings of original technology.

The utility model compared with prior art, owing to have three lobe shape cat's paw structures of the formula of having a denture made, easy to usely flexibly promptly save material and realized that again the alloy tool steel of preferred material high rigidity, wearability, anti-red heat guarantees the quality of friction welding (FW) chuck, improved service efficiency and production efficiency.As: a chuck of original technology on average can only be done 2000 workpiece, and chuck of the present utility model can reach 50000 workpiece, 25 times have been improved, the chuck of original technology high speed steel material manufacturing is 590 yuan/, and every pair of present cat's paw is 70 yuan/, and its manufacturing expense is original 1/8 times, by 1,000,000 calculating of annual production, can save 2,936,000,000 yuan of funds every year, present technique has been brought the remarkable economical effect.

Fig. 1 is the utility model structural representation.

Fig. 2 is that Figure 1A is to view.

Fig. 3 is workpiece figure.

1--screw, 2--jacket body, 3--cat's paw, 4--steel ball, 5--push rod, 6--bowl seat.

Below in conjunction with accompanying drawing embodiment of the present utility model is described specifically.

Working portion by chuck shown in the accompanying drawing--cat's paw, adopt alloy tool steel, jacket body 2 adopts 65Mn to make chuck possess its property requirement, its being connected and fixed of the two is to utilize on three flutings of chuck, be connected and fixed with screw 1, last 2 screws of cat's paw, jacket body is by lathe, milling machine, account for bed and finish roughing, process by grinding machine with being positioned at after the heat treatment of main shaft connecting portion and cat's paw and to guarantee the axiality requirement, cat's paw's material of working position is an alloy tool steel, once successfully guarantee the internal-external circle concentricity requirement by lathe, every pair of cat's paw stamps number, mill out three lobes, become to pay after the heat treatment and install, inferior surplus one pair of cat's paw (3) average life span can reach 50,000, only need change the cat's paw during replacing and get final product, convenient especially, be convenient to operation.Connect by threaded portion and machine tool chief axis by jacket body shown in the accompanying drawing 1 (2), cat's paw (3) contains copper ball, when spindle switch is connected, chuck moves (by drawing) from right to left, the outer cone circle of chuck is compressed (entad), three-jaw clamps steel ball by the cat's paw, rotation at a high speed then, push rod (5) is carried from right to left simultaneously, connects and runs into steel ball, and the two high-speed friction is generated heat, reddened and become one to melting the disome weldering, after finishing welding sequence, jacket body (2) moves from left to right, and three-jaw unclamps, and workpiece takes off from the cat's paw.The cylinder external diameter that cat's paw 3 constitutes is that H7 level gap cooperates with jacket body 2 endoporus, and cat's paw's endoporus and workpiece--steel ball also is that H7 level gap cooperates.

Claims

1, a kind of friction welding (FW) chuck, the jacket body (2) that comprises cylinder three lobe shapes, one end of jacket body (2) and machine tool chief axis are spiral marking connection, cylindrical and awl circle and spindle jacket location, it is hard to it is characterized in that in jacket body (2) circle has its material of matched in clearance, the corresponding three lobe shape cat's paws (3) of high-wearing feature and anti-red heat are linked its jacket body (2) and cat's paw (3) by screw fixing, constitute the formula three-jaw spring chuck of having a denture made.