CN2690101Y

CN2690101Y - Hydranlic clamp for processing imperfect circular work piece

Info

Publication number: CN2690101Y
Application number: CN 200320105806
Authority: CN
Inventors: 姜殿军; 齐志强; 陶崇立; 韩爱礼; 倪帆; 王瑛
Original assignee: SHENYANG MACHINE TOOLS PLANT NO 1
Current assignee: SHENYANG MACHINE TOOLS PLANT NO 1
Priority date: 2003-12-05
Filing date: 2003-12-05
Publication date: 2005-04-06
Anticipated expiration: 2013-12-05

Abstract

The utility model relates to a hydraulic clamp for processing the surface of an imperfect circular part, which belongs to the main component of a machine tool. The utility model is characterized in that the clamp is provided with a pneumatic checking device, a hydraulic clamping device and a multiple-safety device. The utility model is also characterized in that the processed part can be the first process in the state of all blanks, and the machining precision surface as the positioning face is not necessary. The external circle and the two end surfaces of the part can all be processed. The processed external circle and the processed end surfaces are the maximum machining surfaces on the part, and the accuracy is easily controlled. The clamp which is designed according to the same work principle can be widely used in imperfect circular parts with different specifications and shapes such as the brake shoe of the automobile, etc.

Description

The imperfect circular pieces hydraulically operated fixture of a kind of processing

Technical field: the utility model relates to a kind of Surface Machining hydraulically operated fixture of imperfect circular pieces, belongs to the critical piece of lathe.

Background technology: the Surface Machining of imperfect circular pieces generally all is to adopt many to form a complete round, utilizes lathe (as sleeping carriage or vertical lathe) to process again.But jig Design is often relatively more difficult.Brake shoes with automobile is an example, and processing mode in the past is, with the pin-and-hole location, termination that processes, the cast blank hole in the middle of utilizing on the gusset penetrates the clamping pull bar, adopts the method that entad clamps, and two parts of a clamping are processed on vertical lathe.The shortcoming of this method is, the restrictions such as rigidity because of diameter, the degree of depth, position and the alignment pin of pin-and-hole influence positioning accuracy, and can only processing excircles, can not process end face, and efficient is not high.The more important thing is that the structure of part to be processed must have the blank hole that is used for the higher hole of locating accuracy and is used to clamp.And along with developing of automobile industry, numerous parts has all been done important improvement, because of considering that intensity etc. is former thereby cancelled the blank hole on the gusset, so, adopts processing method in the past can't clamp as some brake shoes.

Summary of the invention: the purpose of this utility model designs for addressing the above problem, provide a kind of processing imperfect circular pieces hydraulically operated fixture, it comprises disk spring (12), pipeline (3), it is characterized in that: these anchor clamps are furnished with PCU, hydraulic clamp and maltilevel security safeties, PCU mainly is made up of distributing ring (1) and pipeline (3), pipeline (3) is pneumatic and fluid pressure line, place in the cavity of lathe spindle (4) and clamp body (9), distributing ring (1) and distribution oil ring (2) are equipped with in the lower end of lathe spindle (4), and clamp base (5) is provided with circumferential registration pin (14) and radial location pin (17); Hydraulic clamp mainly is by clamp base (5), three positioning support points (6), briquetting (8), clamp body (9), distribution oil ring (2), piston (10) and oil cylinder (11) are formed, clamp base (5) is contained on the lathe spindle (4), clamp body (9) is installed on the clamp base (5), clamp base (5) is provided with three positioning support points (6), each positioning support point top is provided with oil cylinder (11), piston (10) is contained in the oil cylinder (11), each oil cylinder (11) is distributed on the same circumference of clamp body (9), and briquetting (8) is embedded in the T-slot of piston rod below; The maltilevel security protective device comprises disk spring (12), hydraulic lock (13), backing pin (15) and backing pin (16), and disk spring (12) is contained in piston rear end, and hydraulic lock (13) is in fluid pressure line, and backing pin (15) and backing pin (16) are contained on the clamp base (5).

Characteristics of the present utility model are: the part of being processed can be first procedure of all woolen base state, is locating surface without any need for the surface with machining accuracy.The cylindrical of part and two end faces all can be processed.Generally be axially, radially to reach circumferencial direction location, axial compression.Cylindrical after the processing and end face are finished surfaces maximum on the part, and precision is controlled easily.

Description of drawings:

Fig. 1 is a structural representation of the present utility model.

Fig. 2 is the A-A amplification profile of Fig. 1.

The specific embodiment:

With reference to Fig. 1, Fig. 2, the imperfect circular pieces hydraulically operated fixture of a kind of processing, comprise PCU, hydraulic clamp and maltilevel security safeties, PCU mainly is made up of distributing ring 1 and pipeline 3, pipeline 3 is pneumatic and fluid pressure line, place in the cavity of lathe spindle 4 and clamp body 9, distributing ring 1 and distribution oil ring 2 are equipped with in the lower end of lathe spindle 4, and clamp base 5 is provided with circumferential registration pin 14 and radial location pin 17; Hydraulic clamp mainly is made up of clamp base 5, three positioning support points 6, briquetting 8, clamp body 9, distribution oil ring 2, piston 10 and oil cylinders 11, clamp base 5 is contained on the lathe spindle 4, clamp body 9 is installed on the clamp base 5, clamp base 5 is provided with three positioning support points 6, each positioning support point top is provided with oil cylinder 11, piston 10 is contained in the oil cylinder 11, and each oil cylinder 11 is distributed on the same circumference of clamp body 9, and briquetting 8 is embedded in the T-slot of piston rod below; The maltilevel security safeties comprise disk spring 12, hydraulic lock 13, backing pin 15 and backing pin 16, and disk spring 12 is contained in piston rear end, and hydraulic lock 13 is in fluid pressure line, and backing pin 15 and backing pin 16 are contained on the clamp base 5.

The operation principle of hydraulically operated fixture is in PCU compressed air to be entered in the cavity of clamp base 5 by distributing ring 1, pipeline 3, sprays in the aperture by circumferential registration pin 14 and radial location pin 17 again.Behind the workpiece 7 of packing into, block pore, prove that the location is reliable, after pressure switch signals, press the clamping cylinder switch again, clamping work pieces 7.Three positioning support points 6 are arranged on each workpiece bottom, and each supporting-point 6 top is equipped with an oil cylinder 11, by piston 10, briquetting 8 workpiece pressings 7.Each oil cylinder 11 is distributed on the same circumference of clamp body 9, briquetting 8 can be adjusted radial position in the T type groove below piston 10 bars, guarantee that supporting-point 6 centers corresponding with the below are on same vertical line, make the workpiece after compressing indeformable, briquetting 8 is controlled by the gathering sill on clamp body 9 outer walls simultaneously, can not rotate.Disk spring 12 guarantees that hydraulic systems hinder for some reason and pressure descends even when being zero, briquetting 8 still produces higher thrust to workpiece 7, and is unlikely to throw away because of the effect of rotary centrifugal force; Hydraulic lock 13 guarantees when oil circuit opens circuit suddenly, the confining pressure oil return line, and at short notice, make still to keep certain pressure in the oil cylinder 11; Backing

15,16 guarantees workpiece when thrust is not enough, is unlikely to too much and departs from the home position and people or equipment are produced injury.

Though the related anchor clamps of the utility model have hydraulic pressure and pneumatic system simultaneously, all pipeline is all hidden in the cavity of clamp body 9 and lathe spindle 4, does not have pipeline to expose.By the anchor clamps of same operation principle design, can be widely used in the imperfect circular pieces of different size shape, as the brake shoes of automobile etc.

Claims

1, the imperfect circular pieces hydraulically operated fixture of a kind of processing, comprise disk spring (12), pipeline (3), it is characterized in that: these anchor clamps are furnished with PCU, hydraulic clamp and maltilevel security safeties, PCU mainly is made up of distributing ring (1) and pipeline (3), pipeline (3) is pneumatic and fluid pressure line, place in the cavity of lathe spindle (4) and clamp body (9), distributing ring (1) and distribution oil ring (2) are equipped with in the lower end of lathe spindle (4), and clamp base (5) is provided with circumferential registration pin (14) and radial location pin (17); Hydraulic clamp mainly is by clamp base (5), three positioning support points (6), briquetting (8), clamp body (9), distribution oil ring (2), piston (10) and oil cylinder (11) are formed, clamp base (5) is contained on the lathe spindle (4), clamp body (9) is installed on the clamp base (5), clamp base (5) is provided with three positioning support points (6), each positioning support point top is provided with oil cylinder (11), piston (10) is contained in the oil cylinder (11), each oil cylinder (11) is distributed on the same circumference of clamp body (9), and briquetting (8) is embedded in the T-slot of piston rod below; The maltilevel security safeties comprise disk spring (12), hydraulic lock (13), backing pin (15) and backing pin (16), and disk spring (12) is contained in piston rear end, and hydraulic lock (13) is in fluid pressure line, and backing pin (15) and backing pin (16) are contained on the clamp base (5).