CN2868538Y

CN2868538Y - Composite clamp for working cylindrical thin-wall piece

Info

Publication number: CN2868538Y
Application number: CN 200520093041
Authority: CN
Inventors: 王景岚; 陈丽文; 戚勇; 乔保中; 韩爱礼
Original assignee: SHENYANG MACHINE TOOLS PLANT NO 1
Current assignee: SHENYANG MACHINE TOOLS PLANT NO 1
Priority date: 2005-10-28
Filing date: 2005-10-28
Publication date: 2007-02-14
Anticipated expiration: 2015-10-28

Abstract

The utility model relates to a special clamp for the inner hole, end surface and grooving of the front/back brake drum, front/back brake drum assembly and the parts with the same type of the chassis of cars, tractor, and war industry, in particular to a compound clamp processing the cylindrical thin-walled parts. The utility model belonging to the main parts of the machine tool has a central support part and a shock absorption part; the clamp body is installed on the main shaft head of the machine tool; the transmission device is arranged in the central hole of the clamp body; the clamp body and the centering are arranged from top to bottom; the centering shaft is at the outer side of the transmission shaft; the centering support shaft and the outer side of the centering are separately conically contacted with the bearing outer ring waiting for being processed; an opening press ring is arranged on the upper part of the centering shaft and a fork-lever is arranged on the transmission shaft; one end of the lever is arranged on the fork-lever, while the other end is arranged by a spring and is connected with a shock absorption jaw block by the bolt piercing the spring. The utility model can rough machine and finish machine the inner hole and the end surface in one time, easily guarantees the requirements of size consistency, form tolerance and the surface finish of the parts, and improves the processing capacity.

Description

A kind of compound anchor clamps of processing column shape thin-wall part

Technical field

The utility model relates to the applied clamp structure design of endoporus, end face, the grooving of the front and back brake rim on automobile, tractor, military industry chassis and front and back brake drum assembly and part of the same type, be specially a kind of compound anchor clamps of processing column shape thin-wall part, belong to the critical piece of lathe.

Background technology

The front and back brake rim on automobile, tractor, military industry chassis and the processing of front and back brake drum assembly and part of the same type, part to be processed generally all adopts combination back to do the location benchmark by two outer race conical surfaces up and down on anchor clamps, axially apply downforce and compress back processing, purpose is axiality, cylindricity, the surface smoothness that guarantees two bearings hole and processed endoporus.Processing mode in the past is to process on vertical lathe, and as processing on complete mechanical vertical lathe or processing on vertical multiple spindle lathe, because the heavily about 80～100kg of part, processing is installed conveniently on vertical lathe, and characteristics are superior, improve the machining accuracy of part easily.But be subjected to the structural limitations of lathe in the past in vertical lathe processing, mostly adopt manually to clamp, be subjected to the machine tool accuracy restriction to be difficult to improve the machining accuracy of part, influenced by part feature can only slow cutting, otherwise can produce vibration, can not bring into play capacity utilization, restrict working (machining) efficiency simultaneously.

At present related work piece is mostly transferred on the NC vertical lathe and is processed, and purpose is to improve precision, raise the efficiency, the problem that causes out so be exactly under the high-speed cutting state processing thin-walled can produce resonance consequently can not upper slitter.The use FU that has can only be kept slow cutting, and the user who has ties up the adhesive tape absorbing by hand at each work piece cylindrical.

Along with developing of automobile industry auto parts precision improves constantly, output is increasing.EQUIPMENT MARKET GUIDE only provides good equipment not enough, and the anchor clamps that are suitable for that also need to provide high-quality could satisfy Cutting Parts processing.

The utility model content

The purpose of this utility model provides a kind of compound anchor clamps of processing column shape thin-wall part, solves the problems such as dimensional uniformity, fineness of the axiality relate to part, cylindricity, endoporus, further improves precision, enhances productivity.

The technical solution of the utility model is:

A kind of compound anchor clamps of processing column shape thin-wall part, having central support portion divides and the vibration damping part, the central support portion branch comprises power transmission shaft, clamp body, the centering back shaft, centration axis, the opening pressure ring, vibration damping partly comprises shift fork, lever, cylindrical spring, the vibration damping rest shoe, compound anchor clamps are installed on the main tapping of lathe by clamp body, power transmission shaft is placed through the central hole of clamp body, be arranged in order clamp body from bottom to top, the centering back shaft, centration axis is in the power transmission shaft outside, the centering back shaft, its outside of centration axis is the conical surface with the outer race of part to be processed respectively and contacts, centration axis top is equipped with the opening pressure ring, shift fork is housed on the power transmission shaft, the uniform lever in three places is housed on the shift fork, each lever one end and shift fork are hinged, each lever other end is equipped with cylindrical spring, passes spring connection vibration damping rest shoe by screw and holds part cylindrical to be processed place tightly.

The compound anchor clamps of described processing column shape thin-wall part stud with the rubber blanket that contacts with part cylindrical to be processed on the vibration damping rest shoe.

The compound anchor clamps of described processing column shape thin-wall part also are equipped with driving lever on clamp body, the driving lever lower end is fixed on the clamp body, and insert in the hole of part to be processed the upper end.

The beneficial effects of the utility model are:

1, the utility model anchor clamps are furnished with centring means, vibration absorber, characteristics be can No. one time clamping finish slightly, fine finishining endoporus and end face, guarantee dimensional uniformity, the form tolerance of part, the requirement of surface smoothness easily, and can improve working ability.

2, the utility model is mainly used in the fine finishining use, adopt radial location, axial compression, control axiality, the cylindricity of part easily, dimensional uniformity, adopt vibration absorber can improve surface smoothness, overcome resonance that high-speed cutting causes, cause and to cut, satisfy the requirement of producing beat in enormous quantities.

Description of drawings

Fig. 1 is the utility model structural representation.

Fig. 2 is the vertical view of Fig. 1.

Among the figure, 1 clamp body; 2 shift forks; 3 centering back shafts; 4 centration axis; 5 levers; 6 cylindrical springs; 7 vibration damping rest shoes; 8 brake drum assemblies; 9 power transmission shafts; 10 outer races; 11 opening pressure rings; 12 main shaft pull bars; 13 driving levers; 14 main tappings.

The specific embodiment

Shown in Fig. 1-2, the compound anchor clamps of the utility model processing column shape thin-wall part comprise that mainly the two large divisions forms, and a part is the central support portion branch, and a part is the vibration damping part.

The compound anchor clamps of the utility model are installed on the main tapping 14 of lathe by clamp body 1, power transmission shaft 9 is placed through the central hole of clamp body 1, be arranged in order clamp body 1 from bottom to top, centering back shaft 3, centration axis 4 is in power transmission shaft 9 outsides, centering back shaft 3 is installed on the clamp body 1, centering back shaft 3 its outsides contact with outer race 10 conical surfaces of brake drum assembly 8 (part to be processed) bottom, promptly feel relieved and support part, centration axis 4 contacts with outer race 10 conical surfaces on its outside hung brake drum assembly 8 tops, centration axis 4 tops are equipped with opening pressure ring 11, shift fork 2 is housed on the power transmission shaft 9, it is uniform that three places are housed on the shift fork 2, identical lever 5, each lever one end and shift fork 2 are hinged, each lever other end is equipped with a pair of cylindrical spring 6, and connect vibration damping rest shoe 7 by screw and hold part cylindrical to be processed place tightly, stud with the rubber blanket that contacts with brake drum assembly 8 cylindricals on the vibration damping rest shoe 7.

The operation principle of the utility model anchor clamps is:

The machine tool chief axis lower end is furnished with oil cylinder, and by hydraulic oil cylinder driving, main shaft pull bar 12 drives anchor clamps power transmission shaft 9 and moves up and down, and drives by three open slots on the shift fork 2, drives lever 5 by the hinge transmission again and realizes unclamping and clamping.Power transmission shaft 9 being also simultaneously by the withdrawing from and filling in of opening pressure ring 11, and realizes that centration axis 4 takes out and put into the axial tension of finishing part to be processed and unclamp.Power transmission shaft 9 moves down, at first pull lever 5 continues to move down after holding part cylindrical to be processed tightly, exert pressure by 11 pairs of centration axis 4 of opening pressure ring and to finish the axial compression for the treatment of processing parts, driving lever 13 also has been installed on clamp body 1, driving lever 13 lower ends are fixed on the clamp body 1, insert in the hole of part to be processed the upper end, purpose be prevent since centering back shaft 3 and centration axis 4 in the rotation of caused part inadequately of impaction state lower cone frictional force.

The related anchor clamps of the utility model are carried out available pneumatic, the hydraulic pressure of motion, machine driving, and these anchor clamps can be used for the processing of automobile brake drum assembly.Owing to automatically clamp, thoroughly solve vibration, solved that use at user's machining tool in the past can only be at 50～70 work of changing a job, and can under 100～120 commentaries on classics cutting speeds, work now, promptly eliminate chatter mark and also improved operating efficiency.Adopt the utility model, can extensively be suitable for by the part of same operation principle at the different size of similar shape.

Claims

1, a kind of compound anchor clamps of processing column shape thin-wall part, it is characterized in that: have central support portion and divide and the vibration damping part, the central support portion branch comprises power transmission shaft (9), clamp body (1), centering back shaft (3), centration axis (4), opening pressure ring (11), vibration damping partly comprises shift fork (2), lever (5), cylindrical spring (6), vibration damping rest shoe (7), compound anchor clamps are installed on the main tapping (14) of lathe by clamp body (1), power transmission shaft (9) is placed through the central hole of clamp body (1), be arranged in order clamp body (1) from bottom to top, centering back shaft (3), centration axis (4) is in power transmission shaft (9) outside, centering back shaft (3), its outside of centration axis (4) is the conical surface with the outer race (10) of part to be processed respectively and contacts, centration axis (4) top is equipped with opening pressure ring (11), shift fork (2) is housed on the power transmission shaft (9), the uniform levers in three places (5) are housed on the shift fork (2), each lever one end and shift fork (2) are hinged, each lever other end is equipped with cylindrical spring (6), passes spring connection vibration damping rest shoe (7) by screw and holds part cylindrical to be processed place tightly.

2, according to the compound anchor clamps of the described processing column shape of claim 1 thin-wall part, it is characterized in that: stud with the rubber blanket that contacts with part cylindrical to be processed on the vibration damping rest shoe (7).

3, according to the compound anchor clamps of the described processing column shape of claim 1 thin-wall part, it is characterized in that: driving lever (13) also is installed on clamp body (1), and driving lever (13) lower end is fixed on the clamp body (1), and insert in the hole of part to be processed the upper end.