CN2177555Y

CN2177555Y - Special lathe for cutting plus thread and minus thread

Info

Publication number: CN2177555Y
Application number: CN 93246118
Authority: CN
Inventors: 刘宗跃; 田玉彬; 边跃平; 刘助利; 赵英奇; 张月茹
Original assignee: DINGZHOU MACHINE TOOL FACTORY HEBEI PROV
Current assignee: DINGZHOU MACHINE TOOL FACTORY HEBEI PROV
Priority date: 1993-12-04
Filing date: 1993-12-04
Publication date: 1994-09-21
Anticipated expiration: 2003-12-04

Abstract

The utility model relates to a special lathe for cutting plus threads and minus threads, which is particularly suitable for processing opposite wires of radiator sheets, once clamping and processing the plus and minus threads of many opposite wires. The special lathe of the utility model comprises a lathe bed, lathe legs, a headstock, a motor, a knife frame, an apron, a change gear box, a rotating tail frame, plus and minus feeding limiting device, etc. The change gear box comprises a plus rotation gear change, a minus gear change and a gear change clutch which is connected with an operating handle through a connecting rod. The utility model has the advantages of simple and flexible operation, safety, high processing efficiency, etc.

Description

Special lathe for cutting plus thread and minus thread

The utility model relates to a kind of right-and-left threaded special purpose lathe that is used to cut, and is specially adapted to processing heating radiator to silk, and No. one time clamping can be processed many positive left-hand threads to silk simultaneously.

In the prior art, processing right-and-left threaded lathe is engine lathe, for processing positive left-hand thread, it generally is the rotating that changes motor by the operator, make the main shaft rotating, and pass through the rotation direction that one group of change gear changes turn-screw, process positive left-hand thread thereby slide carriage is seesawed.This mode is damaged the frequent positive and negative easily generation overload of transferring of motor.And general can only process a workpiece at every turn, the tailstock that adopts is common non-rotating sleeve, withstand workpiece by installing live center additional, because its support stiffness is little, limited the quantity of each processing work, its eccentricity runout had both influenced the life-span of tailstock, also influenced the processing dimension and the precision of workpiece.

The purpose of this utility model is to overcome the defective of prior art, and a kind of right-and-left threaded special purpose lathe of cutting that is exclusively used in is provided, and it has the spacing automatic stop arrangement of positive and negative feed.

Another purpose of the present utility model provides the special purpose lathe of a kind of processing heating radiator to silk, and its clamping can be processed many positive left-hand threads to silk simultaneously, and need not to make motor commutation.

Another purpose of the present utility model provides a kind of rotation tailstock that is used on the above-mentioned special purpose lathe, with the support stiffness and life-span of improving tailstock and processing dimension and the precision of improving workpiece.

Technical solution of the present utility model is as follows: a kind ofly be used to cut right-and-left threaded special purpose lathe, include lathe bed, footpost, motor, headstock, knife rest, tailstock, change gear box, slip crate etc., described tailstock is the rotation tailstock, described change gear box includes and just turns linked to wheel, anti-change gear and the change gear clutch of taking turns, and clutch is connected with the clutch control handle by clutch linkage.It also is provided with a positive and negative feed stopping means, and this device comprises a limiting plate, and an end of limiting plate is fixedlyed connected with slip crate, and the other end is slidingly connected by a groove and clutch control handle.Described clutch control handle places the groove of limiting plate, and the distance between described groove two the inners is to be cut two times of the one-sided reach of workpiece.Described change gear box has first, second, the 3rd and the 4th, first gear on first I is connected with lathe spindle, and second gear on second gear on second gear on first I and second II and the 4th IV constitutes the counter-rotating gear changing group; First gear on gear on first gear on second II and the 3rd III and the 4th IV constitutes and is just turning linked to wheels.Described clutch is between first gear and second gear on the 4th IV.Described rotation tailstock comprises main shaft, sleeve, tailstock body, leading screw, set lever, top, handwheel and bearing.Described bearing is thrust bearing and ball bearing.

The utility model compared with prior art has simple and reasonable, convenient and flexible operation and safe and reliable, tailstock is big to the support stiffness of workpiece, characteristics such as the easy assurance of machining accuracy and size, especially clamping can be processed the positive left-hand thread of a plurality of workpiece, has greatly improved the working (machining) efficiency of special purpose lathe.

With reference to the accompanying drawings the utility model is done more detailed description.

Fig. 1 is a whole end view of the present utility model;

Fig. 2 is mechanical drive principle figure between the change gear box of the utility model special purpose lathe and the leading screw;

Fig. 3 is the schematic diagram of the positive and negative feed stopping means of the utility model special purpose lathe;

Fig. 4 is the generalized section of the rotation tailstock of the utility model special purpose lathe.

Among the figure: change gear box 1; Rotation tailstock 2; Positive and negative feed stopping means 3; Headstock 4; Footpost 5; Lathe bed 5a; Slip crate 6; Knife rest 7; Clutch control handle 8; Leading screw 9; Bearing 10; Gear 11,12,13,14,15,16,19; Clutch 17; Clutch linkage 18; Limiting plate groove 31; Limiting plate 32; Connecting bolt 33; Main shaft 2a; Sleeve 2b; Tailstock body 2c; Leading screw 2d; Set lever 2e; Top 2f; Handwheel 2g; Thrust bearing 2h; Ball bearing 2i; First I; Second II; The 3rd III; The 4th IV.

Referring to accompanying

drawing

1,2 and 3,1 is change gear box among the figure, and the drive connection between change gear box and the screw mandrel is represented that by Fig. 2 positive and negative feed stopping means is represented by Fig. 3.In Fig. 2, first gear 11 on first I is connected with the machine tool chief axis (not shown).Second gear 19 on second gear 13 on second gear 12 on first I and second II and the 4th IV constitutes the counter-rotating change gears; First gear 16 on gear 15 on first gear 14 on second II and the 3rd III and the 4th IV constitutes and is just turning linked to wheel.Clutch 17 is on the 4th IV between first gear 16 and second gear 19.When clutch 17 combines with gear 19, leading screw 9 counter-rotatings drive slip crate 6 and move right, when reaching the qualification position, positive and negative feed stopping means 3 works, at this moment, an end of limiting plate 32 upper grooves 31 is run into clutch control handle 8, and drive handle 8 moves to right, handle 8 drives clutch linkage 18 by jointed shaft and moves to left, thereby clutch 17 and gear 19 are broken away from, and leading screw 9 stops operating, and slip crate 6 also stops to move to right.With hand-lifting dynamic clutch control crank 8, clutch 17 is combined with gear 16, at this moment gear 16 drives leading screw 9 is just changeing, and slip crate 6 is moved to the left, when reaching the qualification position, the other end of the groove 31 on the limiting plate 32 is run into the clutch control handle, and drive handle 8 and move to left, handle 8 drives clutch linkage 18 by jointed shaft and moves to right, thereby clutch 17 and gear 16 are broken away from, leading screw 9 stops operating, and slip crate 6 stops to move to left.

Fig. 3 shows the annexation of stopping means 3 simply, one end of limiting plate 32 is fixedlyed connected with slip crate 6 by connecting bolt 33, the other end of limiting plate fluted 31, clutch control handle 8 is arranged in the groove, and the spacing that groove 31 two ends form becomes the multiple relation with the one-sided reach on will processing other part.In most preferred embodiment of the present utility model, install four on the knife rest 7 lathe tool, No. one time clamping can be processed seven simultaneously to silk, and each end to silk is a plus thread, and the other end is a left-hand thread.In when cutting, folk prescription is to the distance of one-pass, for adjacent a pair of to the pitch of thread between silk from, be each two times to the one-sided screw thread of silk (just or instead) length, this distance is the distance between limiting plate 32 upper grooves 31 both ends.

Fig. 4 shows the cross-section structure of rotation tailstock 2.Shaking handwheel 2g drive leading screw 2d can make sleeve 2b flexible in tailstock body 2c.Main shaft 2a is bearing among the barrel of tail stock 2b with four bearings (2h and 2i).Top 2f can directly be contained in the taper hole of main shaft 2a.

Claims

1, a kind ofly is used to cut right-and-left threaded special purpose lathe, include lathe bed, footpost, motor, headstock, knife rest, tailstock, change gear box, slip crate etc., it is characterized in that, described tailstock is the rotation tailstock, described change gear box includes and just turns linked to wheel, anti-change gear and the change gear clutch of taking turns, and clutch is connected with the clutch control handle by clutch linkage.

2, a kind of right-and-left threaded special purpose lathe that is used to cut as claimed in claim 1, it is characterized in that: it also is provided with a positive and negative feed stopping means, this device comprises a limiting plate, one end of limiting plate is fixedlyed connected with slip crate, and the other end is slidingly connected by a groove and clutch control handle.

3, a kind of right-and-left threaded special purpose lathe that is used to cut as claimed in claim 2, it is characterized in that: described clutch control handle places the groove of limiting plate, and the distance between described groove two the inners is to be cut two times of the one-sided reach of workpiece.

4, a kind of right-and-left threaded special purpose lathe that is used to cut as claimed in claim 1 or 2, it is characterized in that: described change gear box has first, second, the 3rd and the 4th, first gear on first I is connected with lathe spindle, and second gear on second gear on second gear on first I and second II and the 4th IV constitutes the counter-rotating gear changing group; First gear on gear on first gear on second II and the 3rd III and the 4th IV constitutes and is just turning linked to wheels.

5, a kind of right-and-left threaded special purpose lathe that is used to cut as claimed in claim 4 is characterized in that: described clutch is between first gear and second gear on the 4th IV.

6, a kind of right-and-left threaded special purpose lathe that is used to cut as claimed in claim 1 or 2 is characterized in that: described rotation tailstock comprises main shaft, sleeve, tailstock body, leading screw, set lever, top, handwheel and bearing.

7, a kind of right-and-left threaded special purpose lathe that is used to cut as claimed in claim 6, it is characterized in that: described bearing is thrust bearing and ball bearing.