CN101020249A

CN101020249A - Pneumatic tailstock of numerically controlled lathe

Info

Publication number: CN101020249A
Application number: CN 200710067578
Authority: CN
Inventors: 盛焕君
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-03-16
Filing date: 2007-03-16
Publication date: 2007-08-22
Anticipated expiration: 2027-03-16
Also published as: CN100421845C

Abstract

The pneumatic tailstock of numerically controlled lathe includes a pedestal, a carriage, rolling guide rails for the pedestal and the carriage to be installed on, a muff for installing thimble on bearing with great bearing capacity, a connecting seat fixed on the carriage, and computerized control system with pneumatic control element connected to the connecting seat. The present invention has improved tailstock structure, less contact and less wear between the muff and the tailstock, high precision, simple operation, high operation efficiency and other advantages.

Description

Pneumatic tailstock of numerically controlled lathe

Technical field

The present invention relates to a kind of tailstock structure of numerically controlled lathe, especially realize the Pneumatic tailstock of numerically controlled lathe that pneumatic advance and retreat are regulated.

Background technology

Numerically controlled lathe is when processing parts, one end is clamped institute's processing parts by the main spindle box chuck, the other end is withstood by the tailstock thimble, because the big adjusting position of tailstock just maintains static after determining, and thimble need carry out axial minor adjustment on request before withstanding processing parts, and is realized by the axial adjustment of the shaft sleeve that thimble is installed.The shaft sleeve of prior art is to reach by shaking of tailstock handle, the axial location of thimble is by the skidding distance decision of shaft sleeve in tailstock, shake the tail wheel at tailstock rear portion during operation, hand one changes, shaft sleeve drives flexible 4～6 millimeters of thimble, by the clamping lever lock shaft sleeve at tailstock top, the axial location of thimble also is determined then, and this tailstock structure with engine lathe is identical.Its shortcoming is embodied in: at first, this hand adjusting inefficiency, operator's labour intensity is big, the frequent axial slip of shaft sleeve is regulated, quicken the fretting wear of tailstock and shaft sleeve, form the gap, cause directly influencing part processing precision and reduce service life of equipment; Secondly, select for use live centre or dead center decide according to the speed and the precision of processing, generally in High-speed machining, element precision is selected for use live centre under the less demanding situation, because of dead center should not high speed, easily kill; Add man-hour at low speed, the element precision requirement is higher again, selects dead center for use.Live centre is because of reasons in structure, poor rigidity, and the life-span is low, easily causes end play, and machining accuracy is descended.Therefore, how to improve the tailstock structure, make tailstock improve precision, easy and simple to handle, reduce operator's labour intensity, can use inexpensive dead center to use again to improve machining accuracy, reduce cost, finish the Pneumatic tailstock of axial adjustment by numerically controlled lathe computer system control program, will be the problem that the present invention will inquire into.

Summary of the invention

Goal of the invention of the present invention is to overcome the defective of prior art and a kind of syndeton of utilizing computer system control pneumatic element and then driving improved tailstock structure and planker and base is provided, reach the lathe Pneumatic tailstock of the slippage adjusting of regulating shaft sleeve and thimble axial location, thereby avoid the skimming wear of shaft sleeve and tailstock sliding surface, be used in combination inexpensive dead center and make it have the live centre function, to improve mechanical precision, increase the service life, increase work efficiency and to alleviate operator's labour intensity.

Goal of the invention of the present invention is achieved through the following technical solutions.

A kind of Pneumatic tailstock of numerically controlled lathe, it comprises the base that is fixed on the numerically controlled lathe guide rail, and base is provided with the planker of its axial slip relatively, and the planker end face is provided with the tailstock that includes shaft sleeve and thimble, the relative planker axial location of tailstock, vertical back of regulating are fixed, and it is characterized in that:

Be respectively equipped with the fixed guide of a pair of composition roller guide rail and the rolling guide of relative fixed guide rail slippage on the sliding surface of the planker of a, described base and axial slip, be provided with by the isolated rolling member of retainer in the every pair of fixed guide and the rolling guide;

The rear, tailstock rear of b, described planker end face is provided with the Connection Block of being realized promotion by the pneumatic element of computer system control or hand push button crawl;

In the bearing by at least 2 bidirectional stress inlaying the interplanting axial location, afterbody is provided with the axial adjustment part to shaft sleeve two supports in c, the described tailstock in tailstock.

Described pneumatic element comprises the cylinder axis that is connected with Connection Block, and the cylinder that cylinder axis is installed is fixed on the mount pad of fixing with base.

Described tailstock is to be provided with equipped mutually 2 locating slots and 2 location lugs on faying face with the axial location of planker.

The bidirectional stress bearing of described bolster sleeve is conical bearing or angular contact bearing, is provided with 2～5.

Compared with prior art, the present invention has improved tailstock structure and the relative Sliding Structures of planker with base, promptly between planker and base, be provided with 02260472.3 the roller guide rail of a pair of the applicant in first to file, the axial adjustment of thimble is realized by the pneumatic element of computer system control simultaneously, be of the same moved further realization of the axial adjustment of thimble by shaft sleeve and tailstock, so there is not the frequent contact wear between shaft sleeve and the tailstock, can use inexpensive dead center with live centre function, former manual advance and retreat have been changed, Pneumatic tailstock after the improvement is because of having adopted the roller guide rail, so coefficient of rolling friction is low, the guiding clearance is little, machinery mobile accuracy height helps the machining high-precision engineering goods, also has easy and simple to handle simultaneously, high efficiency, long service life, characteristics such as operator's labour intensity is low.

Description of drawings

Fig. 1 is a perspective view of the present invention.

Fig. 2 is shaft sleeve and tailstock part sectional structure chart.

Fig. 3 is the roller guide rail johning knot composition (being the front view of Fig. 1) between planker and the base.

Fig. 4 is a roller guide rail structure stereogram.

The specific embodiment

Below in conjunction with accompanying drawing the embodiment of the invention is described in detail again.

Shown in Fig. 1～4, Pneumatic tailstock of numerically controlled lathe comprises the base 9 that is installed on the numerically controlled lathe guide rail, and two guide-track grooves of base end face can be made axial adjustment along the lathe guide rail, especially runs into when processing is short expects, generally regulates thus, after the adjusting base is fixed.

Planker 8 is located at base top, base can be done the axial slip adjusting relatively, this slippage is regulated by a pair of roller guide rail that is located between base and the planker and is realized, described a pair of roller guide rail is that the patent No. that the applicant formerly obtains is 02260472.3 patent structure, the rolling friction part of this roller guide rail is made up of the fixed guide 12 and the rolling guide 11 that include retainer 19 separation rolling members, and rolling member can be steel column 18 or steel ball.For the roller guide rail is set, shown in Fig. 3～4, base 9 is made boss type, and planker 8 is made " II " font, can certainly change mutually.Promptly at the fixing a pair of fixed guide 12 (or rolling guide 11) of base boss two lateral surfaces vertically, planker two inboard fixing a pair of rolling guides 11 (or fixed guide 12) vertically, two pairs of guide rails are the center with thimble 1 axis, symmetry is divided the both sides that are located at the thimble axial line, and the adjacent installation relative of the fixed guide of every side with rolling guide, rolling steel column 18 is installed in formation, and " the semicircle mounting groove of V-type mounting groove or installation rolling steel balls; it is rolling member that the present invention adopts steel column; so mounting groove is " V " type; isolated by retainer 19 between steel column and the steel column promptly forms the roller guide rail of relative slippage.A pair of fixed guide in the roller guide rail and a rolling guide are installed the back and are fixed with location pin and screw; Another rolling guide is screwed after regulating the gap of roller and " V " type groove, and at this moment, planker 8 bottom surfaces do not contact with base 9 end faces and leave the gap.Fixed guide 12 and rolling guide 11 are made by the high-quality bearing steel, also can make of the material that quenching hardness is higher, wearability is good, form through fine finishining (grinding), must manually not shovel and scrape.The roller guide rail is realized the rolling friction axial adjustment when making planker 8 relative bases 9 make axial slip to regulate, and it is low to have a coefficient of rolling friction, and the rolling guiding clearance is little, and the mobile accuracy height helps the machining high-precision engineering goods.Axial location after the relative base of planker is regulated can be realized by the pneumatic element of computer system control, also can be realized by the hand push button crawl.

Tailstock 3 is located on the planker 8, and the axial location of tailstock on planker done vertically to regulate the back and be fastenedly connected one by screw by the equipped location of realizing of 2 location lugs 10 (or locating slot 17) of 2 locating slots 17 (or location lug 10) and the planker end face of tailstock bottom.Simplified the tailstock structure, must tail wheel must set lever yet.Shaft sleeve 2 outer surfaces in the tailstock are multidiameter, be bearing in 2 conical bearings 14 in the tailstock, this bearing is made inside and outside circle axial location with shaft sleeve self omoplate face and edge cover 13, can bear bigger axial force and radial load, the taper hole of shaft sleeve head is equipped mutually with the taper shank of dead center 1, and afterbody is tight by regulating part nut 16, packing ring 15 cakes.

Fixing a connecting seat 4 on the planker at tailstock rear, this Connection Block is connected with the pneumatic element of computer system control, pneumatic element comprises cylinder axis 5, cylinder 7 is installed on the mount pad of fixing with base 6, cylinder axis in the cylinder promotes Connection Block and drives planker, tailstock, shaft sleeve, thimble to make locking phase the base axial slip is regulated under computer system control, the shaft sleeve here only works the thimble effect of installing, thimble holds out against part to be processed rear axle sleeve and thimble rotates synchronously, do not do move to regulate, so and fricton-tight wear problem between the tailstock.

The computer system of control Pneumatic tailstock is realized by artificial crawl or programming realizes automatically.

Claims

1, a kind of Pneumatic tailstock of numerically controlled lathe, it comprises the base (9) that is fixed on the numerically controlled lathe guide rail, base is provided with the planker (8) of its axial slip relatively, the planker end face is provided with the tailstock (3) that includes shaft sleeve (2) and thimble (1), the relative planker axial location of tailstock, vertical back of regulating are fixed, and it is characterized in that:

Be respectively equipped with the fixed guide (12) of a pair of composition roller guide rail and the rolling guide (11) of relative fixed guide rail slippage on the sliding surface of a, described base (9) and the planker (8) of axial slip, be provided with by the isolated rolling member of retainer (19) in the every pair of fixed guide and the rolling guide;

Tailstock (3) rear of b, described planker (8) end face is provided with the Connection Block (4) of being realized promotion by the pneumatic element of computer system control or hand push button crawl;

Shaft sleeve (2) two supports in the c, described tailstock overlaps (13) by edge tailstock (3) in does in the bearing of 2 bidirectional stress of axial location at least, and afterbody is provided with the axial adjustment part.

2, Pneumatic tailstock of numerically controlled lathe according to claim 1 is characterized in that described pneumatic element comprises the cylinder axis (5) that is connected with Connection Block (4), and the cylinder (7) that cylinder axis is installed is fixed on the mount pad of fixing with base (9) (6).

3, Pneumatic tailstock of numerically controlled lathe according to claim 1 is characterized in that the described tailstock (3) and the axial location of planker (8) are to be provided with equipped mutually 2 locating slots (17) and 2 location lugs (10) on faying face.

4, according to each described Pneumatic tailstock of numerically controlled lathe of claim 1～3, the bidirectional stress bearing that it is characterized in that described bolster sleeve (2) is conical bearing (14) or angular contact bearing, is provided with 2～5.