CN209867993U

CN209867993U - Special fixture for machining tool rest

Info

Publication number: CN209867993U
Application number: CN201920397832.XU
Authority: CN
Inventors: 於培君
Original assignee: Jiangsu Hongda Numerical Control Science & Technology Co Ltd
Current assignee: Jiangsu Hongda Numerical Control Science & Technology Co Ltd
Priority date: 2019-03-27
Filing date: 2019-03-27
Publication date: 2019-12-31
Anticipated expiration: 2029-03-27

Abstract

The utility model provides a knife rest processing special fixture, including two revolving stage tailstock and bridge, two the equal threaded fixation of revolving stage tailstock medial surface has the bridge seat, the bridge is installed between two revolving stage tailstocks through two bridge seat screw threads, two left revolving stage tailstock side is opened in the revolving stage tailstock has the anchor clamps to lead to the groove, revolving stage tailstock left side leads to groove fixed mounting through anchor clamps has rough machining anchor clamps, the bridge upper surface is provided with finish machining anchor clamps, there is the benchmark backup plate through eccentric shaft movable mounting on the bridge, the locating pin has all been installed in four corners department on the benchmark backup plate, the bridge upper surface is equipped with four reference holes, four the locating pin runs through benchmark backup plate to the reference downthehole. The device can be mainly used for a three-axis or four-axis type machining center, realizes the machining of a plurality of planes by utilizing the equal division rotation capacity of the fourth axis, reduces the delay time and the clamping times in the machining clamping, reduces the labor cost, and improves the machining and production efficiency.

Description

Special fixture for machining tool rest

Technical Field

The utility model belongs to knife rest machining anchor clamps field, concretely relates to knife rest machining special fixture.

Background

The tool rest is an important component of the whole machine tool, plays a role of bearing the upper part and the lower part, and connects the upper tool rest, the lower tool rest, the box body and the cradle of the important component in the machine tool together through the tool rest to form a whole, so the quality of the tool rest body directly influences the precision of the whole machine tool.

When the prior art is used for machining the tool rest part, different machining surfaces are machined by different numerical control machining centers in different machining processes, the part needs to be disassembled to clamp for multiple times in the process, multiple surfaces can not be machined by one-time clamping in a unified mode, the tool rest part can be positioned and machined in a reference mode to cause errors in different clamping modes, the reference is inconsistent, the tool rest part is poor in assembling precision in final assembly, the tool rest is poor in use performance, labor cost is wasted, and machining production efficiency is low.

SUMMERY OF THE UTILITY MODEL

The utility model discloses solve not enough among the above-mentioned background art, provide a knife rest processing special fixture for this reason.

The utility model provides a technical scheme that its technical problem adopted is:

the utility model provides a knife rest processing special fixture, includes two revolving stage tailstock and bridge plate, two the equal threaded fixation of revolving stage tailstock medial surface has the bridge plate seat, the bridge plate is installed between two revolving stage tailstocks through two bridge plate seat screw threads, two left revolving stage tailstock side is opened in the revolving stage tailstock has the anchor clamps to lead to the groove, revolving stage tailstock left side leads to groove fixed mounting through anchor clamps has rough machining anchor clamps, the bridge plate upper surface is provided with finish machining anchor clamps, there is the benchmark backup plate through eccentric shaft movable mounting on the bridge plate, the locating pin has all been installed and has been inserted in four corners on the benchmark backup plate, the bridge plate upper surface is equipped with four benchmark holes, four the locating pin runs through benchmark backup plate to the benchmark downthehole.

Further, rough machining anchor clamps include location platform, location core, first clamp plate and first locking screw, location platform right-hand member is inserted and is led to the inslot in the anchor clamps, open on the left of the location platform has and fixes a position core complex locating hole, the location core passes locating hole threaded fixation in bridge plate seat left side, first clamp plate passes through first locking screw and fixes the work piece in the left of the location platform.

Further, the finish machining fixture comprises two second pressing plates and a plurality of second locking screws, the two second pressing plates are L-shaped plates, the right-angle surfaces of the two second pressing plates are downwards pressed on two sides of the surface of the workpiece respectively, and the second pressing plates are longitudinally symmetrically connected to the upper portion of the bridge plate through the second locking screws in a threaded mode.

Furthermore, a yielding port is formed in the surface of the reference backup plate, and a second pressure plate on the left side in the finish machining clamp penetrates through the yielding port and is installed above the bridge plate.

Further, the eccentric shaft is divided into an upper end shaft and a lower end shaft, the upper end shaft is fixed on the upper end face of the lower end shaft, the axial lead of the upper end shaft and the axial lead of the lower end shaft are parallel and not collinear, the upper end shaft is inserted into the rotating center of the upper side edge of the reference backup plate, the lower end shaft is inserted into the bridge plate, and the axial lead of the upper end shaft of the reference backup plate rotates as the rotating center.

Furthermore, a reference groove is formed in the mounting position of the workpiece on the upper surface of the bridge plate, and a blanking port penetrates through the middle position of the lower surface of the reference groove.

Compared with the prior art, the beneficial effects of the utility model are that: this device is through installing rough machining anchor clamps and finish machining anchor clamps in revolving stage tailstock left side and bridge top, utilizes the partition gyration ability of current four-axis numerical control machining center fourth shaft, makes the lathe carry out the multiple-sided processing through the different machined surfaces of rough machining anchor clamps and finish machining anchor clamps location, realizes that the part adds the different processes of simultaneous processing that can add man-hour, reduces delay time and clamping number of times in the processing clamping, reduces the cost of labor, improves processing and production efficiency.

Drawings

The present invention will be further explained with reference to the drawings and examples.

FIG. 1 is a full sectional view of an embodiment of the present invention;

fig. 2 is a top view of an embodiment of the present invention;

FIG. 3 is a schematic view of the connection of the eccentric shaft according to the embodiment of the present invention;

the embodiment of the present invention has the following main symbols:

the fixture comprises a rotary table tailstock-1, a fixture through groove-101, a bridge plate seat-2, a bridge plate-3, a reference hole-301, a reference groove-302, a blanking port-303, a rough machining fixture-4, a positioning table-401, a positioning hole-402, a positioning core-403, a first pressing plate-404, a first locking screw-405, a finish machining fixture-5, a second pressing plate-501, a second locking screw-502, a reference backup plate-6, a abdicating port-601, an eccentric shaft-7, an upper end shaft-701, a lower end shaft-702 and a positioning pin-8.

Detailed Description

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", and the like, indicate orientations and positional relationships based on the orientations and positional relationships shown in the drawings, and are used only for convenience in describing and simplifying the present invention, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

As shown in fig. 1 and 3, a special fixture for machining a tool rest comprises two rotary table tailstocks 1 and a bridge plate 3, wherein the inner side surface of each rotary table tailstock 1 is fixed with a bridge plate seat 2 through threads, the bridge plate 3 is installed between the two rotary table tailstocks 1 through the threads of the two bridge plate seats 2, the side surface of the left rotary table tailstock 1 in the rotary table tailstock 1 is provided with a fixture through groove 101, the left side of the rotary table tailstock 1 is fixedly provided with a rough machining fixture 4 through the fixture through groove 101, the upper surface of the bridge plate 3 is provided with a finish machining fixture 5, the bridge plate 3 is provided with a reference backup plate 6 through an eccentric shaft 7, four corners of the reference backup plate 6 are provided with positioning pins 8, the upper surface of the bridge plate 3 is provided with four reference holes 301, and the positioning pins 8 penetrate through the reference backup plate 6 to the reference holes 301.

Rough machining anchor clamps 4 include location platform 401, location core 403, first clamp plate 404 and first locking screw 405, location platform 401 right-hand member is inserted in anchor clamps logical groove 101, location platform 401 left side is opened has and is located core 403 complex locating hole 402, location core 403 passes locating hole 402 threaded fixation in bridge plate seat 2 left side, first clamp plate 404 passes through first locking screw 405 with the work piece fixation in location platform 401 left side.

The finish machining fixture 5 comprises two second pressing plates 501 and a plurality of second locking screws 502, the two second pressing plates 501 are L-shaped plates, the right-angle surfaces of the two second pressing plates 501 are downwards pressed on two sides of the surface of a workpiece respectively, and the second locking screws 502 longitudinally and symmetrically penetrate through the second pressing plates 501 and are connected to the upper portion of the bridge plate 3 in a threaded mode.

The working principle and the using method of the device are as follows: processing parts of four sides and a boring process, namely clamping the parts by using a positioning reference surface of a positioning table 401, mounting a first pressing plate 404 by using the appearance of the parts as a coarse positioning reference, and tightening a first locking screw 405 to compress the parts; when the rest procedures of drilling, milling, chamfering, deburring and the like are processed, a finish machining part is installed in the reference groove 302 on the upper surface of the bridge plate 3 for reference surface positioning, the eccentric shaft 7 is used as a rotation center, the micro-rotation reference backup plate 6 is pushed to the finish machining part to ensure that the finish machining position is uniform and accurate, the second pressing plate 501 is installed, the second locking screw 502 is screwed down to press the second pressing plate 501 to fix the finish machining part, and after the two processes of clamping are finished, the finish machining is performed according to a machining programming program.

The surface of the reference backup plate 6 is provided with a yielding port 601, the second pressing plate 501 on the left side in the finish machining fixture 5 penetrates through the yielding port 601 to be installed above the bridge plate 3, and the upper surface of the reference backup plate 6 is provided with waist-shaped holes which are longitudinally formed in holes for installing the eccentric shaft 7 and the positioning pins 8, so that micro-transposition when the eccentric shaft 7 and the positioning pins 8 rotate to push a workpiece is facilitated.

The eccentric shaft 7 is divided into an upper end shaft 701 and a lower end shaft 702, the upper end shaft 701 is fixed on the upper end face of the lower end shaft 702, the axial lead of the upper end shaft 701 and the axial lead of the lower end shaft 702 are parallel and not collinear, the upper end shaft 701 is inserted into the rotating center of the upper side edge of the reference backup plate 6, the lower end shaft 702 is inserted into the bridge plate 3, the axial lead of the upper end shaft 701 of the reference backup plate 6 is used as the rotating center to rotate, and the stability of the rotating center is ensured when the reference backup plate 6 is rotated by utilizing the dislocation of the axial leads of the upper end shaft 701 and the lower end shaft 702 of the eccentric shaft 7.

A reference groove 302 is formed in the workpiece mounting position on the upper surface of the bridge plate 3, and a blanking port 303 penetrates through the middle position of the lower surface of the reference groove 302.

This device is through installing rough machining anchor clamps 4 and finish machining anchor clamps 5 in 1 left side of revolving stage tailstock and bridge 3 top, utilizes the partition gyration ability of current four-axis numerical control machining center fourth shaft, makes the lathe carry out multiaspect processing through the different machined surfaces of rough machining anchor clamps 4 and finish machining anchor clamps 5 location, realizes that the part adds the different processes of simultaneous processing that adds man-hour, reduces delay time and clamping number of times in the processing clamping, reduces the cost of labor, improves processing and production efficiency.

In light of the foregoing, it will be apparent to those skilled in the art from this disclosure that various changes and modifications can be made without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.

Claims

1. The utility model provides a knife rest processing special fixture, includes two revolving stage tailstock (1) and bridge plate (3), two the equal threaded fixation of revolving stage tailstock (1) medial surface has bridge plate seat (2), its characterized in that is installed between two revolving stage tailstock (1) through two bridge plate seat (2) screw threads in bridge plate (3): two open left revolving stage tailstock (1) side in revolving stage tailstock (1) has anchor clamps to lead to groove (101), revolving stage tailstock (1) left side is led to groove (101) fixed mounting through anchor clamps and is had rough machining anchor clamps (4), bridge plate (3) upper surface is provided with finish machining anchor clamps (5), have benchmark backup plate (6) through eccentric shaft (7) movable mounting on bridge plate (3), locating pin (8) have all been installed and inserted in four corners department on benchmark backup plate (6), bridge plate (3) upper surface is equipped with four benchmark holes (301), four locating pin (8) run through in benchmark backup plate (6) to benchmark hole (301).

2. The special fixture for machining the tool rest according to claim 1, wherein: rough machining anchor clamps (4) are including location platform (401), location core (403), first clamp plate (404) and first locking screw (405), location platform (401) right-hand member is inserted in anchor clamps lead to groove (101), location platform (401) left side is opened has and is fixed core (403) complex locating hole (402), location core (403) pass locating hole (402) threaded fixation in bridge plate seat (2) left side, first clamp plate (404) are fixed the work piece in location platform (401) left side through first locking screw (405).

3. The special fixture for machining the tool rest according to claim 2, wherein: finish machining anchor clamps (5) include two second clamp plates (501) and a plurality of second locking screw (502), two second clamp plate (501) are L shaped plate, two second clamp plate (501) right angle face is pressed respectively on work piece surface both sides downwards, and is a plurality of second locking screw (502) vertical symmetry passes second clamp plate (501) threaded connection to bridge plate (3) top.

4. The special fixture for machining the tool rest according to claim 3, wherein: a yielding port (601) is formed in the surface of the reference backup plate (6), and a second pressing plate (501) on the left side in the finish machining clamp (5) penetrates through the yielding port (601) to be installed above the bridge plate (3).

5. The special fixture for machining the tool rest according to claim 4, wherein: eccentric shaft (7) divide into upper end axle (701) and lower extreme axle (702), upper end axle (701) are fixed on lower extreme axle (702) up end, the parallel non-collineation of upper end axle (701) axial lead and lower extreme axle (702) axial lead, upper end axle (701) are arranged in benchmark backup plate (6) upside border rotation center department, lower extreme axle (702) are arranged in bridge plate (3), more than the axial lead of end axle (701) are rotatory for the rotation center for benchmark backup plate (6).

6. The special fixture for machining the tool rest according to any one of claims 1 to 5, wherein: a reference groove (302) is formed in the mounting position of a workpiece on the upper surface of the bridge plate (3), and a blanking port (303) penetrates through the middle position of the lower surface of the reference groove (302).