CN102294613B

CN102294613B - Universal fixture of roughly turned sliding fork excircle

Info

Publication number: CN102294613B
Application number: CN201110219727.5A
Authority: CN
Inventors: 周建喜; 陈云升; 马喜岭; 韩利; 尚国生; 张峰; 周永川; 张鹏超; 曹善江; 魏洪菊; 李建勋; 张俊华; 张志斌; 顾鲜美; 李磊; 雷务然; 柴二帅; 唐记敏; 王建国; 姚晋业
Original assignee: Xuchang Yuandong Drive Shaft Co Ltd
Current assignee: Xuchang Yuandong Drive Shaft Co Ltd
Priority date: 2011-08-02
Filing date: 2011-08-02
Publication date: 2014-05-28
Anticipated expiration: 2031-08-02
Also published as: CN102294613A

Abstract

The invention discloses a universal fixture of a roughly turned sliding fork excircle, which comprises a transition plate, wherein a through sliding groove of which the cross section is T-shaped is formed on one side face of the transition plate along the equally dividing central line; two T-shaped slide blocks which are symmetrical around the centre of the transition plate are arranged in the sliding groove; each slide block is connected with a detachable V-shaped block through an axial fastening screw; a limit strip extending into the sliding groove is arranged on one side, close to the transition plate, of the V-shaped block; and a positioning mechanism is axially arranged in the centre of the transition plate. The universer fixture has the advantages that: the design is reasonable, the structure is simple, the shortcomings of a traditional fixture are overcome, the requirements of excircle processing of various sliding forks are met, the processing precision of parts is improved, convenience in quick adjustment is realized, the relative distance of the V-shaped blocks can be adjusted only by loosening screws, the aim of replacing processes varieties can be fulfilled by replacing a positioning shaft and a centring plate, the number of fixtures is correspondingly reduced, the manufacturing cost and inventory of the fixtures are saved, the production efficiency is improved, and the effect is obvious.

Description

Universal fixture for external circles of rough turning sliding yokes

Technical field

The invention belongs to machine components processing and manufacturing technical field, be specifically related to a kind of universal fixture for external circles of rough turning sliding yokes.

Background technology

Slip yoke is a strength member of vehicle driving shaft assembly, mainly coordinates formation free-sliding spline pair to compensate the length variations of driving-shaft assembly with spindle nose or slip shaft yoke, and realizes moment of torsion transmission simultaneously.The rough turn cylindrical special fixture of existing slip yoke, main what adopt is that all-in-one-piece V-block coordinates centering disk to realize location to slip yoke.The V-block of this fixture is nonadjustable monoblock type, in the middle of reality is used, because slip yoke is wide in variety, need often to change Integral V-type piece and centering disk, adjust again, trial cut after replacing, precision is difficult for guaranteeing, sometimes every order of classes or grades at school all will be changed adjustment once, quite loaded down with trivial details time-consuming.Add that operative employee's technical merit is irregular to differ, the semi-finished product dimensional uniformity after processing is poor, causes postorder to be difficult to compensation, and percent defective is high.Because the difficulty of its assembling, dismounting, maintenance is all larger, usually can delay manufacturing schedule, and cause production cost to improve.

Summary of the invention

The present invention is in order to solve weak point of the prior art, provide a kind of existing higher positioning precision, be again convenient for changing adjustment, time saving and energy saving, improved operating efficiency, and the universal fixture for external circles of rough turning sliding yokes that fully reduces production costs.

For solving the problems of the technologies described above, the present invention adopts following technical scheme: universal fixture for external circles of rough turning sliding yokes, comprise transition disc, transition disc one side is T-shaped chute along dividing that center line offers perforation and cross section equally, in chute, be provided with about centrosymmetric two the T-shaped slide blocks of transition disc, each slide block is all connected with dismountable V-block by axial trip bolt, and V-block is pressed close to transition disc one side and is provided with the positive stop strip putting in chute, and transition disc central authorities are axially arranged with detent mechanism.

Described detent mechanism comprises the lining being axially located in transition disc centre bore, in lining, slide and be provided with locating shaft, locating shaft is provided with coaxial centering disk closing on V-block one end, and centering disk outside has tapering, is arranged with the Compress Spring between lining and centering disk on locating shaft.

Described chute two ends are equipped with a stop screw being screwed onto on transition disc.

Adopt technique scheme, transition disc is connected by corresponding mode with lathe spindle, V-block and detent mechanism play jointly by the effect of the fork ear end location of slip yoke, bar portion one end of slip yoke is held out against by lathe centre, by regulating trip bolt that V-block and slide block are moved along chute, thereby realize the adjustment of distance size between two V-blocks, change the detent mechanism varying in size simultaneously, reach the object of the slip yoke that uses same fixture processing different model.Good position-limiting action when positive stop strip plays V-block and moves along chute; In the mesopore of transition disc, install lining additional, improve the positioning precision of centering disk by the method for resleeve more; Centering disk outside has tapering, and this and the fork ear end medial roof interference fit use of slip yoke play center and accurately locate the effect of slip yoke; Compress Spring plays centering disk and the more firm effect of slip yoke top interference fit; Fixture is in the time of High Rotation Speed, and stop screw plays and prevents V-block in use just in case loosening throwing away and cause the generation of casualty accident; The present invention is reasonable in design, simple in structure, has overcome the drawback of existing fixture, has adapted to the requirement of many kinds slip yoke Excircle machining, improve part processing precision, easy to adjust quick, only need loosening screw, with regard to the relative distance of capable of regulating V-block, change locating shaft and centering disk simultaneously, can reach the object of changing processing variety, correspondingly reduce fixture quantity, save fixture manufacturing expense and stock, improved production efficiency, effect is remarkable.

Accompanying drawing explanation

Fig. 1 is structural representation of the present invention;

Fig. 2 is that the central A of Fig. 1 is to view.

The specific embodiment

As depicted in figs. 1 and 2, universal fixture for external circles of rough turning sliding yokes of the present invention, comprise transition disc 1, transition disc 1 one sides are T-shaped chute 2 along dividing that center line offers perforation and cross section equally, in chute 2, be provided with about the centrosymmetric T-shaped slide block 3 of transition disc 1 and slide block 4, slide block 3 is connected with dismountable V-block 6 by axial trip bolt 5, slide block 4 is connected with dismountable V-block 8 by axial trip bolt 7, V-block 6 and V-block 8 are provided with the positive stop strip 9 putting in chute 2 pressing close to transition disc 1 one sides, certainly, positive stop strip 9 can be made into integration with V-block 6 and V-block 8, chute 2 two ends are equipped with a stop screw 10 being screwed onto on transition disc 1, transition disc 1 central authorities are axially arranged with detent mechanism.Detent mechanism comprises the lining 11 being axially located in transition disc 1 centre bore, the interior slip of lining 11 is provided with locating shaft 12, locating shaft 12 is closing on V-block 6 and V-block 8 one end are provided with coaxial centering disk 13, centering disk 13 outsides have tapering, are arranged with the Compress Spring 14 between lining 11 and centering disk 13 on locating shaft 12.Locating shaft 12 and centering disk 13 processing and manufacturing are in advance structure as a whole.

When work is used, transition disc 1 is connected by corresponding mode with lathe spindle, the hand-held slip yoke 15 of operative employee, Shi Qiliangcha ear puts into respectively V-block 6 and V-block 8, start bar portion one end that tail stock top 16 holds out against slip yoke 15, make the passive centering disk 13 that presses to of slip yoke 15, like this, just complete the location clamping process of slip yoke 15, just can start lathe and carry out batch machining.By regulating trip bolt 5 and trip bolt 7, V-block 6 and slide block 3, V-block 8 and slide block 4 are moved along chute 2, thereby realize the adjustment of distance size between V-block 6 and V-block 8, change the size of locating shaft 12 and centering disk 13 simultaneously, reach the object of the slip yoke that uses same fixture processing different model.

Claims

1. universal fixture for external circles of rough turning sliding yokes, it is characterized in that: comprise transition disc, transition disc one side offers perforation along center line and cross section is T-shaped chute, in chute, be provided with about centrosymmetric two the T-shaped slide blocks of transition disc, each slide block is all connected with dismountable V-block by axial trip bolt, V-block is pressed close to transition disc one side and is provided with the positive stop strip putting in chute, and positive stop strip and V-block are made into integration, and transition disc central authorities are axially arranged with detent mechanism;

Described detent mechanism comprises the lining being axially located in transition disc centre bore, in lining, slide and be provided with locating shaft, locating shaft is provided with coaxial centering disk closing on V-block one end, centering disk outside has tapering, on locating shaft, be arranged with the Compress Spring between lining and centering disk, locating shaft and centering disk processing and manufacturing are structure as a whole;

The location clamping process of slip yoke is: transition disc is connected with lathe spindle, the Liang Cha ear of slip yoke is put into respectively to two V-blocks, start the top bar portion one end that holds out against slip yoke of tail stock, make the passive centering disk that presses to of slip yoke, V-block and detent mechanism are jointly by the fork ear end location of slip yoke, and the location that so just completes slip yoke clamps.

2. universal fixture for external circles of rough turning sliding yokes according to claim 1, is characterized in that: described chute two ends are equipped with a stop screw being screwed onto on transition disc.