CN106378465B

CN106378465B - A kind of thimble

Info

Publication number: CN106378465B
Application number: CN201611118409.9A
Authority: CN
Inventors: 唐辉; 李铁军
Original assignee: Zhangjiajie Institute of Aeronautical Engineering
Current assignee: Zhangjiajie Auto Parts Manufacturing Co., Ltd.
Priority date: 2016-12-08
Filing date: 2016-12-08
Publication date: 2018-03-06
Anticipated expiration: 2036-12-08
Also published as: CN106378465A

Abstract

Thimble is machine tool accessories, thimble is by thimble bonnet (A), thimble pedestal (B), bearing block (C), work head (D), bearing block and thimble pedestal (B) have bearing chamber, for installed thrust bearing, bearing block (C) and work head (D) are then connected together, so, when workpiece rotates, workbench and bearing block rotate together, but thimble pedestal (B) will not rotate, thimble pedestal (B) has knife bar hole, cylindrical and center processing can be synchronously completed in the case where thimble works by knife bar hole, so, the machining accuracy of some irregular parts and thin-walled parts can be ensured, so that product can reach the tolerance of layout design.

Description

A kind of thimble

Technical field

The invention belongs to engineering goods, more particularly, to a kind of machine tool accessories.

Background technology

In the process of some flange types or disc-like mechanical workpieces, if workpiece to be processed is cast member, or Person is that workpiece shape itself is not plane, and it is not plane to be particularly scroll chuck or chuck, but is had certain Gradient, claw contact area is small, easily flies out during such work pieces process, accommodates that power is big, and workpiece is possible to deform, and processes The product concentricity come is very poor, or workpiece is thin-wall workpiece, and such work pieces process is difficult, and blessing power is excessive, and workpiece holds It is yielding, in addition workpiece can fragmentation, accommodate that power is too small, and workpiece easily flies out, be all to this kind of product, during general factory process Withstood with thimble, still, part workpiece needs machining center position, is withstood with thimble and also had any problem, and is all first when typically processing Processing excircles, the face on the basis of cylindrical, using boring machine boring endoporus, and the adjustment of boring machine is time consuming, and is needed in addition Jig, high-volume processing is also similar, is for one or two very unrealistic using boring machine, even with boring machine, before add The deformation that workpiece occurs during work is also impossible to that concentricity is completely secured, by our detection, with 516 type horizontal motors Front and rear cover exemplified by, the maximum and minimum value of its screens outside diameter, average phase difference 0.07mm, can extremely reach individually 0.15mm, in addition, aluminium, zinc, coppersmith part, built-up-edge is easily formed in process, glues knife, this kind of workpiece material is soft, glues during processing Property again it is big, be easily worked on the contrary not as good as steel product, this kind of workpiece there is also accommodate problem.

The content of the invention

Technical scheme, a kind of thimble, thimble is mainly by thimble bonnet A, thimble pedestal B, bearing block C, work head D and thrust Bearing 4 forms, it is characterized in that：Its structure is as follows,

Described thimble bonnet A is made up of screw thread position A1, arc position A2, a word opening A3；

Described thimble pedestal B is by taper shank B1, empty thorax body B2, knife bar hole B3, locating slot B4, the B5 groups of bearing installation position one Into；

Described bearing block C is made up of fastening thread hole C1, the C2 of bearing installation position two, positioning screw hole C3, locating slot C4；

Described work head D is made up of forwardtransfer signal worm screwed hole D1, convex annulus D2, fastener hole D3；

Described taper shank B1 its taper shank microcephalies have with thimble bonnet A screw thread position A1 corresponding to screwed hole, screw thread position A1 sections It is screwed into the screwed hole of taper shank microcephaly；

The described B5 of bearing installation position one and the C2 positions of bearing installation position two form bearing chamber, for installed thrust bearing 4, Positioning screw 1 is screwed into positioning screw hole C3, and positioning screw hole C3 positions and locating slot B4 are corresponding, prevent bearing block C from thimble base Seat B drops；

Described fastening thread hole C1 and fastener hole D3 positions is corresponding, by tie down screw 2 by work head D and bearing Seat C is locked together；

Described convex annulus D2 and locating slot C4 is corresponding, and convex annulus D2 and locating slot C4 are to ensure work The concentricity of head and bearing block；

Described forwardtransfer signal worm screwed hole D1 is corresponding with forwardtransfer signal worm 3；

Described taper shank B1 taper is identical with the taper hole taper in spindle taper hole or tailstock hole；

There is knife bar hole B3 on described thimble pedestal B, the effect in knife bar hole is to put in knife bar, completes adding for workpiece centre Work.

Brief description of the drawings

Brief description of the drawings：Accompanying drawing 1 is thimble structure schematic diagram, and A is thimble bonnet, and B is thimble pedestal, and C is bearing block, and D is Work head, and B1 is taper shank, and B2 is sky thorax body, and B3 is cutter holes, and 1 is positioning screw, and 2 be tie down screw, and 3 be forwardtransfer signal worm；

Accompanying drawing 2 is thimble structure schematic diagram, and A is thimble bonnet, and B is thimble pedestal, and C is bearing block, and D is work head, B1 It is taper shank, B2 is sky thorax body, and B3 is cutter holes, and 1 is positioning screw, and 2 be tie down screw, and 3 be forwardtransfer signal worm, and 4 be thrust bearing；

Accompanying drawing 3 is thimble pedestal schematic diagram, and B1 is taper shank, and B2 is sky thorax body, and B3 is knife bar hole, and B4 is locating slot, and B5 is Bearing installation position one；

Accompanying drawing 4 is bearing block reverse side schematic diagram, and C1 is fastening thread hole, and C2 is bearing installation position two, and C3 is positioning screw Hole；

Accompanying drawing 5 is working head structure schematic diagram, and D1 is forwardtransfer signal worm screwed hole, and D2 is convex annulus, and D3 is fastener hole；

Accompanying drawing 6 is thimble bonnet schematic diagram, and A1 is screw thread position, and A2 is arc position, and A3 is a word opening；

Accompanying drawing 7 is bearing block front schematic view, and C1 is fastening thread hole, and C4 is locating slot.

Embodiment

Applicant is explained with reference to accompanying drawing：

The commonly thimble on tail stock in thimble, the thimble on tailstock are divided into live centre and dead center, the present invention It is one kind of live centre, thimble pedestal and bearing block are mounted with thrust bearing, and thimble pedestal can not rotate, the work spiral shell for the head that works Bar pushes against workpiece, and under the rotation of workpiece, work headband moving axis bearing is rotated together, and forwardtransfer signal worm can be adjusted, so, even if Workpiece to be processed is irregular, can also push against, and because one side is that claw accommodates, while being pushed against, workpiece would not fly out, and work The position of screw rod is in concrete operations, according to the processing request and shape rational deployment of product, for example, most of workpiece is not One it is non-porous, without protrusion, without caving in, so, using this some holes, protrude or datum mark is done in part of caving in, can prevent workpiece With work hair life relative movement, a thin-walled parts, it is necessary to processing excircles and centre bearing seat simultaneously, now only need by After the adjustment of knife bar hole position, cutter is by knife bar hole, so as to machining center bearing seat, so, the cylindrical and center of synchronous processing Bearing seat, time processing in place, thereby may be ensured that machining accuracy.

Claims

1. a kind of thimble, thimble is mainly by thimble bonnet (A), thimble pedestal (B), bearing block (C), work head (D) and thrust axis Hold（4）Composition, it is characterized in that：Its structure is as follows,

Described thimble bonnet（A）By screw thread position（A1）, arc position（A2）, a word opening（A3）Composition；

Described thimble pedestal（B）By taper shank (B1), empty thorax body (B2), knife bar hole (B3), locating slot (B4), bearing installation position one (B5) form；

Described bearing block（C）By fastening thread hole（C1）, bearing installation position two（C2）, positioning screw hole（C3）, locating slot （C4）Composition；

Described work head（D）By forwardtransfer signal worm screwed hole（D1）, convex annulus（D2）, fastener hole（D3）Composition；

Described taper shank (B1) its taper shank microcephaly has the screw thread position with thimble bonnet (A)（A1）Corresponding screwed hole, screw thread position （A1）Section is screwed into the screwed hole of taper shank microcephaly；

Described bearing installation position one (B5) and bearing installation position two（C2）Position forms bearing chamber, for installed thrust bearing （4）, positioning screw（1）It is screwed into positioning screw hole（C3）, positioning screw hole（C3）Position and locating slot（B4）It is corresponding, prevent bearing Seat（C）From thimble pedestal（B）Drop；

Described fastening thread hole（C1）And fastener hole（D3）Position is corresponding, passes through tie down screw（2）By work head（D）With Bearing block（C）It is locked together；

Described convex annulus (D2) and locating slot (C4) is corresponding, and convex annulus (D2) and locating slot (C4) are to ensure The concentricity of work head and bearing block；

Described forwardtransfer signal worm screwed hole（D1）With forwardtransfer signal worm（3）It is corresponding；

Described taper shank（B1）Taper it is identical with the taper hole taper in spindle taper hole or tailstock hole；

Described thimble pedestal（B）On have knife bar hole（B3）, the effect in knife bar hole is to put in knife bar, completes adding for workpiece centre Work.