CN2063522U - Machine controlled by microcomputer for crankshaft middle frequency quenching - Google Patents

Abstract

The utility model relates to a machine controlled by microcomputers for crankshaft middle frequency quenching, which is an intermediate frequency heat treatment device for a main journal and a rod journal of a crank shaft. The utility model comprises a machine body 2, a working table 1, an upright post 4 provided with a sensing head frame 3, a microcomputer device 11, etc., and is characterized in that the working table 1 can drive the work pieces of the crank shaft to move together. Two or more inductive heads 7 are arranged, and the whole machine is in the mode of hydraulic power transmission. The microcomputer device 11 automatically controls an operating program. The utility model has the advantages of precise positioning, stable and reliable working, high production efficiency, high automation, stable quality for the heat treatment, and difficult deformation of the work pieces.

Description

Machine controlled by microcomputer for crankshaft middle frequency quenching

The utility model belongs to metal heat treatmet equipment, is a kind of main journal of bent axle and medium frequency quenching equipment that rod journal is heat-treated of being specially adapted to.

Present West Germany's bent axle medium frequency quenching lathe and the home-made GC12150 type multi-work-station crankshaft quench lathe of introducing, principle of work is roughly: crankshaft workpiece is clamped on the lathe bed by mechanical clips, want the mobile working column to desired location with manually shaking handgrip, put down the sensing head frame on the column then, make the inductive head reeve on it need heat treated axle journal, after connecting power supply, the middle frequency electromagnetic waves heated mandrel neck that sends by inductive head, by mechanical transmission crankshaft workpiece is turned round simultaneously, make the neck of bent axle thermally equivalent to temperature required, spurt cooling fluid then and quench.Because axle journal heating and spray quenching time are controlled by the time relay, the period is accurate inadequately, and the quenching quality is stable inadequately; Sensing head frame is to move with the work column, and by the artificial visually examine location, operation is relatively more nervous; A sensing head frame only is housed on the column, when needing the axle journal of heating different diameter, changes the inductive head of different openings size repeatedly, production efficiency is low, and labour intensity is big; Adopt the mechanical clamp clamping work pieces, can not adapt to the variation of expanding with heat and contract with cold in the heat treatment of workpieces process, the easy flexural deformation of workpiece.

Design objective of the present utility model is the problems referred to above that exist at prior art, design and a kind ofly adopts hydrostatic transmission, and leans on the bent axle medium frequency quenching lathe microcomputer automatic sequence control, that have many inductive heads.

Primary structure of the present utility model, be by lathe bed with worktable, the column of sensing head frame is housed, drive the transmission mechanism of each movement parts work, control formations such as the microcomputer device of each movement parts program behavior and relevant cable, inlet and outlet pipe lines, its difference with the prior art mark sheet is present: two or two above sensing head frames adorning on the fixed column, be equipped with the Medium frequency induction head respectively on each headstock; Worktable can move along the lathe bed parallel lines, and crankshaft workpiece is housed on the worktable clamps, holds out against and revolving structure; The complete machine transmission is the hydrostatic transmission structure; And the moving of Medium frequency induction head worktable of identical opening size or different openings size can be housed respectively on each sensing head frame, and what the lifting on column of the tailstock center top tight workpiece and the headstock was leaned on is hydraulic ram; Clamping work pieces and what make that workpiece revolution leans on is oild chuck and oil motor; Realize that it is parallel four-bar linkage that inductive head is close to the mechanism of axle journal forming movement.

Below in conjunction with accompanying drawing, embodiment is further described:

Accompanying drawing is a kind of structural representation of micro-processor controlled bent axle medium frequency quenching lathe.

Can be contained in along the worktable 1 that the bed surface straight line moves on the lathe bed 2, two sense headstocks 3 are housed on the fixed column 4, the Medium frequency induction head 7 of identical opening size or different openings size is housed respectively on each headstock 3, clamp mechanism, tailstock jacking mechanism and the traversing mechanism of crankshaft workpiece are housed on the worktable 1, and the headstock 3 makes it along 6 liftings of column chute by hoisting appliance.Earlier with the working routine set with related parameter input microcomputer device 11 is arranged, primer fluid press pump 12 makes each oil duct be full of pressure oil, and makes water inlet pipe be full of cooling fluid etc. before the work.During work crankshaft workpiece placed on the two V-arrangement rest pads 8 on the worktable 1, after carrying out axial location and circular dividing location by a certain specific markers on the bent axle of assert, by oild chuck 9 clamping work pieces one end, the other end holds out against by the tailstock center of being done by hydraulic ram 5/2 10.After the start, microcomputer device 11 instruction hydraulic rams 13 straight line traversers 1 are to specified location, instruct hydraulic ram 16 on principal post 4, to fall sensing head frame 3 simultaneously, make each 7 while of inductive head or some inductive heads 7 snap in required heat treated axle journal, for example make a certain inductive head 7 stick into axle journal earlier, the intermediate frequency power supply that the intermediate frequency power supply producer produces is connected in instruction then, make inductive head 7 send middle frequency electromagnetic waves heated mandrel neck, meanwhile oil motor 14 is turned round by microcomputer device 11 control drive workpiece also, because the axis of the axle journal that has departs from axis of rotation, inductive head 7 is the equality four-bar mechanisms 15 on the something or somebody to fall back on frame 3, make inductive head 7 openings be close to the axle journal forming movement, treat that axle journal is heated to certain temperature with after the time, inductive head 7 stops heating and withdraws from voluntarily, the electromagnetism water valve that starts water inlet pipe (not drawing among the figure) simultaneously spurts cooling fluid to the axle journal place, the even hardening of axle journal is handled, wait to reach required when requiring mutually entirely, stop hydrojet, workpiece stops revolution, and then under microcomputer device 11 instructions, worktable 1 moves to new station automatically, drive oil motor 14 simultaneously and carry out circular index by giving fixed parameter, make axle journal pending on the new station go to specified location, repeat above-mentioned order of work, quenching until whole axle journals finishes.Should be pointed out that purpose is to increase work efficiency when adopting several inductive heads 7 to snap in different axle journals simultaneously to heat; When on each sensing head frame 3 inductive head 7 of different openings size being housed, can select to be used to heat the axle journal of different size; Adopting top 10 top tight workpieces by hydraulic ram 5 work, is the variation of expanding with heat and contract with cold when utilizing hydraulic cushion to adapt to the working heat processing.

Compared with prior art, the utlity model has following good effect:

1. adopt workbench 1 transverse shifting mode, more simple in structure than column integrated moving mode, registration;

2. at column 4 two or two above sensing head frames 3 are set, the inductive head 7 of identical or different opening size can be installed, be convenient to simultaneously some inductive heads 7 and heat together different axle journals, increase work efficiency;

3. worktable 1 moves, tailstock center 10, the headstock 3 liftings adopt hydro-cylinder (13,5,16) transmission, oild chuck 9 and oil motor 14 are adopted in the clamping of workpiece, revolution respectively, make that drive mechanism is simple, stable working, action correct reliable, be convenient to control;

4. adopt microcomputer device by each work package program of programmed instruction and the parameter work set, regularly accurately, reliable operation, automatic routine height.

Claims (3)

1, micro-processor controlled bent axle medium frequency quenching lathe is mainly by the lathe bed 2 with worktable 1, the column 4 of sensing head frame 3 is housed, drive the transmission mechanism of each movement parts work, control compositions such as the microcomputer device 11 of each movement parts program behavior and relevant cable, inlet and outlet pipe lines, it is characterized in that being equipped with on the fixed column 4 on two or two above sensing head frames 3, each headstock 3 Medium frequency induction head 7 is housed respectively, worktable 1 can move along lathe bed 2 straight lines, crankshaft workpiece is housed on the worktable 1 clamps, holds out against and traversing mechanism, and transmission is the hydrostatic transmission structure.

2, quenching machine according to claim 1, it is characterized in that being equipped with respectively on each headstock 3 the Medium frequency induction head 7 of identical opening size or different openings size, what worktable 1 moved, tailstock center 10 top tight workpieces and the lifting of the headstock 3 on column 4 are leaned on is hydraulic ram (13,5,16), clamping work pieces and to make the rotating mechanism of workpiece be respectively oild chuck 9 and oil motor 14, what the keying of water inlet pipe was leaned on is hydraulicvalve.

3,, it is characterized in that it is parallel four-bar linkage 15 that inductive head 7 is close to the structure of axle journal forming movement according to claim 1 and 2 described quenching machines.

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