CN209830954U

CN209830954U - Adjustable numerical control milling fixture

Info

Publication number: CN209830954U
Application number: CN201920534283.6U
Authority: CN
Inventors: 杨安
Original assignee: Hangzhou Vocational and Technical College
Current assignee: Hangzhou Vocational and Technical College
Priority date: 2019-04-19
Filing date: 2019-04-19
Publication date: 2019-12-24
Anticipated expiration: 2029-04-19

Abstract

The utility model provides an adjustable numerical control milling fixture, which comprises a mounting seat, a mounting hole, a sliding table, a clamping mechanism and a positioning pin, wherein the positioning hole and the positioning pin are arranged, and the positioning pin is inserted into the positioning holes on two sides of a workpiece after the annular workpiece or a semi-annular workpiece is clamped, so that the workpiece is limited and fixed, a better fixing effect is achieved, and the phenomenon that the workpiece flies out due to uneven stress when the workpiece is milled is prevented; the clamping mechanism can clamp the ring-shaped piece or semi-ring-shaped piece, effectively improves the clamping efficiency of the workpiece, saves the working time, can be adjusted according to workpieces with different diameters, and has wide application range; the setting of clamp splice and rubber block can laminate the loop forming element and press from both sides tightly, guarantees pressing from both sides of work piece and adorns the effect, and the rubber block can also cushion the effort of clamp splice to the work piece moreover, prevents that the clamp splice direct action from causing the appearance of work piece mar on the surface of work piece.

Description

Adjustable numerical control milling fixture

Technical Field

The utility model belongs to the technical field of the numerical control milling fixture, especially, relate to a numerical control milling fixture with adjustable.

Background

In the field of machining, a large number of die forging support ring parts need to be machined, and when the machining allowance of the die forging parts is small, the die forging support ring parts cannot be clamped. The traditional machining method is to machine the pressure plate on a common milling machine for multiple times, so that the efficiency is low, and machining errors caused by multiple clamping cannot be avoided.

The invention discloses a Chinese patent with a publication number of CN 208681003U, and provides an inner support ring milling clamp, which comprises a base, a positioning pin, a cover plate, a first nut, a positioning column, a second nut, a handle and a set screw; the utility model discloses a clamping can realize that the inner support ring appearance mills fast for the part need not process according to traditional processing scheme clamping many times on ordinary milling machine, and therefore can once only process inner support ring appearance processing target in place at a clamping on the numerically-controlled milling machine, not only has brought a lot of convenience for the few mould forging material batch production of no clamping volume of this type of machining allowance, has still improved production efficiency and machining precision. However, the existing milling clamp for the inner support ring has the problems that the annular workpiece cannot be clamped conveniently, the workpiece can fly out when the annular workpiece is milled due to the fact that the inner diameter of the annular workpiece is different in size, the annular workpiece cannot be fixed according to annular parts with different sizes, and the semi-annular workpiece cannot be clamped.

Therefore, it is very necessary to invent an adjustable numerical control milling fixture.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model provides a numerical control milling fixture with adjustable to solve current inner support ring milling fixture and still having because be not convenient for to the dress of pressing from both sides of annular workpiece, because annular workpiece internal diameter is not of uniform size, can't realize the better condition that presss from both sides the dress and can take place the work piece departure when milling, can not fix according to the not unidimensional loop forming element, and can't press from both sides the problem of dress semiannular workpiece. An adjustable numerical control milling fixture comprises a mounting seat, a mounting hole, a sliding table, a clamping mechanism and a positioning pin, wherein the mounting seat is arranged into a circular table shape with the thickness of 5-8 cm; the mounting holes are uniformly formed along the periphery of the mounting seat; the sliding table is in a circular truncated cone shape and is integrated with the mounting seat; the clamping mechanism is arranged at the bottom of the sliding table and is in sliding connection with the sliding table; the positioning pins are multiple and are all inserted into the positioning holes (34).

The sliding table comprises a circular table, sliding grooves, embedding grooves and positioning holes, wherein the number of the sliding grooves is 4, the sliding grooves are arranged on the circular table in a cross shape and penetrate through the upper surface and the lower surface; the embedded groove is formed at the joint of the sliding grooves; the positioning holes are arranged along the opening direction of the sliding chute, the center distance between the positioning holes is 10-12mm, and the positioning holes are arranged on two sides of the sliding chute.

The outer circle diameter of the positioning pin is the same as the inner diameter of the positioning hole, and the positioning pin is inserted into the positioning holes in two sides of the workpiece after the annular workpiece or the semi-annular workpiece is clamped, so that the workpiece is limited and fixed, a good fixing effect is achieved, and the phenomenon that the workpiece flies out due to uneven stress when the workpiece is milled is avoided.

The clamping mechanism comprises 2 bearings, a rotating table, gears, connecting rods, a vertical shaft, clamping blocks, rubber blocks, screw rods and hand-operated wheels; the upper end of the rotating platform is rotatably connected with the circular truncated cone through a bearing; the gear is connected with the bottom of the rotating platform in a matching way; the number of the connecting rods is 4, one end of each connecting rod is connected with the rotating platform through a rotating shaft, and the other end of each connecting rod is movably connected with the vertical shaft; the upper end of the vertical shaft is welded at the bottom of the clamping block; the clamping block is connected with the sliding groove in a sliding manner; the rubber block is bonded on the inner side of the clamping block; one end of the screw is movably connected with the mounting seat through a bearing, and the other end of the screw is meshed with the gear; the hand-operated wheel is fixed at one end of the screw rod through a screw.

The clamp splice adopts 4, all sets up to the arc form, can laminate the loop forming element and press from both sides tightly, guarantees the clamp dress effect of work piece.

The connecting rod is set to be L-shaped, and the connecting rod can contract along with the rotating platform when being adjusted, so that the clamping block can slide.

Compared with the prior art, the utility model discloses following beneficial effect has:

1. the utility model discloses the setting of locating hole and locating pin is inserted the locating pin and is put in the locating hole of work piece both sides after annular work piece or semi-annular work piece clamp dress finishes, has realized the spacing fixed to the work piece, has played better fixed effect, prevents the phenomenon of the uneven departure work piece of atress when milling the work piece.

2. The utility model discloses clamping mechanism's setting, at first place the work piece in the intermediate position of round platform when pressing from both sides ring-shaped member or semi-ring-shaped member tight, rotatory hand wheel passes through the meshing of screw rod and gear and drives the revolving stage and rotate, install the connecting rod of revolving stage one side and to the excircle laminating of revolving stage, drive the removal of clamp splice through the vertical axis, the realization is tight to the clamp of work piece, moreover, the steam generator is simple in structure, press from both sides tight convenience, the effectual tight efficiency of clamp that improves the work piece, the operating time is saved, and can also adjust according to the work piece of different diameters, wide.

3. The utility model discloses the setting of clamp splice and block rubber, the clamp splice sets up to the arc form, and the loop forming element that can laminate presss from both sides tightly, guarantees pressing from both sides of work piece and adorns the effect, and the block rubber can also cushion the effort of clamp splice to the work piece moreover, prevents that the clamp splice direct action from causing the appearance of work piece mar on the surface of work piece.

Drawings

Fig. 1 is a top view of the structure of the present invention.

Fig. 2 is a schematic diagram of the sliding table structure of the present invention.

Fig. 3 is a sectional view taken along line a-a of the present invention.

Fig. 4 is a structural bottom view of the clamping mechanism of the present invention.

In the figure:

1-mounting seat, 2-mounting hole, 3-sliding table, 31-round table, 32-sliding groove, 33-embedding groove, 34-positioning hole, 4-clamping mechanism, 41-bearing, 42-rotating table, 43-gear, 44-connecting rod, 45-vertical shaft, 46-clamping block, 47-rubber block, 48-screw rod, 49-hand wheel and 5-positioning pin.

Detailed Description

The invention is further described below with reference to the accompanying drawings:

example (b):

as shown in figures 1 to 4

The utility model provides an adjustable numerical control milling fixture, which comprises a mounting seat 1, a mounting hole 2, a sliding table 3, a clamping mechanism 4 and a positioning pin 5, wherein the mounting seat 1 is arranged into a round table shape with the thickness of 5-8 cm; the mounting holes 2 are uniformly formed along the periphery of the mounting seat 1; the sliding table 3 is in a circular truncated cone shape and is integrated with the mounting seat 1; the clamping mechanism 4 is arranged at the bottom of the sliding table 3 and is in sliding connection with the sliding table 3; the positioning pins 5 are multiple and are all inserted into the positioning holes 34.

The sliding table 3 comprises a circular table 31, sliding grooves 32, embedding grooves 33 and positioning holes 34, wherein the number of the sliding grooves 32 is 4, the sliding grooves are arranged on the circular table 31 in a cross shape and penetrate through the upper surface and the lower surface; the embedded groove 33 is arranged at the joint of the sliding grooves 32; the positioning holes 34 are arranged along the opening direction of the sliding chute 32, and the center distance between the positioning holes 34 and the positioning holes 34 is 10-12mm and is arranged on two sides of the sliding chute 32.

The diameter of the outer circle of the positioning pin 5 is the same as the inner diameter of the positioning hole 34, and the positioning pin 5 is inserted into the positioning holes on the two sides of the workpiece after the annular workpiece or the semi-annular workpiece is clamped, so that the workpiece is limited and fixed, a good fixing effect is achieved, and the phenomenon that the workpiece flies out due to uneven stress when the workpiece is milled is avoided.

The clamping mechanism 4 comprises 2 bearings 41, a rotating platform 42, a gear 43, a connecting rod 44, a vertical shaft 45, a clamping block 46, a rubber block 47, a screw 48 and a hand-operated wheel 49, wherein the number of the bearings 41 is 2; the upper end of the rotating platform 42 is rotationally connected with the circular platform 31 through a bearing 41; the gear 43 is connected with the bottom of the rotating platform 42 in a matching way; the number of the connecting rods 44 is 4, one end of each connecting rod is connected with the rotating platform 42 through a rotating shaft, and the other end of each connecting rod is movably connected with the vertical shaft 45; the upper end of the vertical shaft 45 is welded at the bottom of the clamping block 46; the clamping block 46 is connected with the chute 32 in a sliding way; the rubber block 47 is bonded on the inner side of the clamping block 46; one end of the screw rod 48 is movably connected with the mounting seat 1 through a bearing, and the other end of the screw rod is meshed with the gear 43; the hand wheel 49 is fixed at one end of the screw 48 by a screw.

The clamp blocks 46 are 4 in number and are all arc-shaped, ring-shaped parts can be attached to clamp the workpieces, and clamping effect of the workpieces is guaranteed.

The link 44 is formed in an L-shape, and the link 44 contracts along with the rotary table 42 during adjustment, thereby sliding the clamp 46.

Principle of operation

The utility model discloses in, at first place the intermediate position at round platform 31 with the work piece when pressing from both sides tight annular member or semi-annular member, rotatory hand wheel 49 drives revolving stage 42 through the meshing of screw rod 48 and gear 43 and rotates, install the connecting rod 44 to revolving stage 42's excircle laminating in revolving stage 42 one side, drive clamp splice 46's removal through vertical axis 45, the realization is tight to the clamp of work piece, clamp splice 46 can laminate the annular member and press from both sides tightly, guarantee pressing from both sides of work piece and adorn the effect, and rubber splice 47 can also cushion clamp splice 46 and to the effort of work piece, prevent that clamp splice 46 direct action from causing the appearance of work piece mar on the surface of work piece, press from both sides and insert locating pin 5 after finishing in the locating hole 34 of work piece both sides, realized the spacing fixed to the.

Utilize technical scheme, or technical personnel in the field are in the utility model discloses under technical scheme's the inspiration, design similar technical scheme, and reach above-mentioned technological effect, all fall into the utility model discloses a protection scope.

Claims

1. The utility model provides a numerical control milling fixture with adjustable which characterized in that: the device comprises a mounting seat (1), a mounting hole (2), a sliding table (3), a clamping mechanism (4) and a positioning pin (5), wherein the mounting seat (1) is arranged into a circular table shape with the thickness of 5-8 cm; the mounting holes (2) are multiple and are uniformly formed along the periphery of the mounting seat (1); the sliding table (3) is in a circular truncated cone shape and is integrated with the mounting seat (1); the clamping mechanism (4) is arranged at the bottom of the sliding table (3) and is in sliding connection with the sliding table (3); the positioning pins (5) are multiple and are all inserted into the positioning holes (34).

2. The adjustable numerically controlled milling fixture as recited in claim 1, wherein: the sliding table (3) comprises a circular table (31), sliding grooves (32), embedding grooves (33) and positioning holes (34), wherein the number of the sliding grooves (32) is 4, the sliding grooves are arranged on the circular table (31) in a cross shape and penetrate through the upper surface and the lower surface; the embedded groove (33) is arranged at the joint of the sliding grooves (32); the positioning holes (34) are arranged along the opening direction of the sliding chute (32), and the center distance between the positioning holes (34) and the positioning holes (34) is 10-12mm and is arranged on two sides of the sliding chute (32).

3. The adjustable numerically controlled milling fixture as recited in claim 1, wherein: the diameter of the outer circle of the positioning pin (5) is the same as the inner diameter of the positioning hole (34).

4. The adjustable numerically controlled milling fixture as recited in claim 1, wherein: the clamping mechanism (4) comprises 2 bearings (41), a rotating table (42), a gear (43), a connecting rod (44), a vertical shaft (45), a clamping block (46), a rubber block (47), a screw rod (48) and a hand-operated wheel (49), wherein the number of the bearings (41) is 2; the upper end of the rotating platform (42) is rotationally connected with the circular truncated cone (31) through a bearing (41); the gear (43) is connected with the bottom of the rotating platform (42) in a matching way; the number of the connecting rods (44) is 4, one end of each connecting rod is connected with the rotating platform (42) through a rotating shaft, and the other end of each connecting rod is movably connected with the vertical shaft (45); the upper end of the vertical shaft (45) is welded at the bottom of the clamping block (46); the clamping block (46) is connected with the sliding groove (32) in a sliding manner; the rubber block (47) is bonded on the inner side of the clamping block (46); one end of the screw rod (48) is movably connected with the mounting seat (1) through a bearing, and the other end of the screw rod is meshed with the gear (43); the hand-operated wheel (49) is fixed at one end of the screw rod (48) through a screw.

5. The adjustable numerically controlled milling fixture as recited in claim 4, wherein: the number of the clamping blocks (46) is 4, and the clamping blocks are all arranged in an arc shape.

6. The adjustable numerically controlled milling fixture as recited in claim 4, wherein: the link (44) is L-shaped.