CN215468690U

CN215468690U - Copying cutting device based on elimination of consistency errors of parts

Info

Publication number: CN215468690U
Application number: CN202122358847.5U
Authority: CN
Inventors: 刘玉龙; 黄玉亭; 刘光明; 赵永健
Original assignee: Weifang Qingte Axle Co ltd
Current assignee: Weifang Qingte Axle Co ltd
Priority date: 2021-09-27
Filing date: 2021-09-27
Publication date: 2022-01-11
Anticipated expiration: 2031-09-27

Abstract

The utility model belongs to the technical field of axle housing cutting, and particularly relates to a profile modeling cutting device based on elimination of consistency errors of parts. The device comprises two elastic floating mechanisms, wherein the two elastic floating mechanisms are arranged in parallel at intervals, and can float up and down for leveling the plane of the axle housing; the two pneumatic gear self-centering mechanisms are respectively positioned at the outer sides of the two elastic floating mechanisms and are used for positioning and clamping the left end and the right end of the axle housing; the pneumatic centering mechanism is positioned behind the two elastic floating mechanisms and used for positioning and clamping the arc-shaped end of the large flange surface of the axle housing; and the cutting mechanism comprises a positioning support and a profile modeling cutting machine, and the positioning support and the profile modeling cutting machine are respectively positioned at the left side and the right side of the pneumatic centering mechanism and are used for cutting a center hole in the center of the large flange surface of the axle housing. The device location is accurate, steps up firmly to the axle housing, and work efficiency is high, and degree of automation is high, and cutting accuracy is high.

Description

Copying cutting device based on elimination of consistency errors of parts

Technical Field

The utility model belongs to the technical field of axle housing cutting, and particularly relates to a profile modeling cutting device based on elimination of consistency errors of parts.

Background

In order to meet the lightweight design, the QT358 series high-power-density axle housing is designed by adopting a high-strength steel plate to replace a common steel plate. According to calculation, the axial line of the middle hole after cutting needs to be ensured to be less than 1mm relative to the central symmetry of the shell, the coaxiality of the reinforcing ring hole and the rear cover hole after cutting is less than 0.5mm, and the precision requirement is high. However, the length of the half shell parts is about 1390mm, rebound deformation exists in the stamping process, welding deformation exists after the half shell assembly, high cutting precision is obtained under the condition that the precision of the parts is low, and the operation difficulty is high. In addition, the cutting jig of this trade mainly adopts the screw rod to press from both sides tightly the axle housing both ends for the manual work, and the arc end to the big flange face of axle housing advances line location and presss from both sides tightly, work efficiency is low, high in labor strength restricts the promotion of productivity, and current cutting mode mainly has two kinds, a mode for adopting rigidity location cuts, the location is inaccurate to lead to the unable satisfying requirement of cutting precision, another kind is for cutting after detecting through the robot, the equipment drops into about 139 ten thousand yuan, expensive equipment has caused economic burden for the enterprise.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a profiling cutting device based on elimination of consistency errors of parts, and solves the problem that positioning and cutting of shell parts are not accurate.

The above object of the present invention is achieved by the following technical solutions:

a profile cutting device based on elimination of consistency errors of parts comprises

The two elastic floating mechanisms are arranged in parallel at intervals and can float up and down for leveling the plane of the axle housing;

the two pneumatic gear self-centering mechanisms are respectively positioned at the outer sides of the two elastic floating mechanisms and are used for positioning and clamping the left end and the right end of the axle housing;

the pneumatic centering mechanism is positioned behind the two elastic floating mechanisms and used for positioning and clamping the arc-shaped end of the large flange surface of the axle housing;

the cutting mechanism comprises a positioning support and a profile modeling cutting machine, wherein the positioning support and the profile modeling cutting machine are respectively positioned at the left side and the right side of the pneumatic centering mechanism and used for cutting a center hole at the center of a large flange face of an axle housing.

The preferred scheme is as follows:

preferably: the bottom of elasticity relocation mechanism the bottom of pneumatic gear from centering mechanism the bottom of pneumatic centering mechanism the top at the table is all installed to cutting mechanism's bottom, the table is equipped with the cavity, two elasticity relocation mechanism is located both ends about the cavity, cutting sediment collection vehicle has been placed to the below of cavity, pneumatic valve A, pneumatic valve B are installed to the table.

Preferably: every elasticity relocation mechanism all includes fixing base, two vertical establishments respectively the guiding axle A, the fixed mounting at both ends are two around the fixing base the flat board at guiding axle A top, every guiding axle A's the outside all overlaps and is equipped with spring A, linear bearing's lower extreme inserts the inside of fixing base and with fixing base fixed connection, linear bearing's top is located the top of fixing base, spring A is located the flat board with between the linear bearing.

Preferably: the upper end of each guide shaft A is sleeved with a supporting block A, the guide shafts A are in interference fit with the supporting blocks A, the supporting blocks A are fixedly connected with the flat plate, each guide shaft A is sleeved with a gasket, the gasket is located between the spring A and the linear bearing, the outer diameter of the gasket is larger than that of the spring A, the outer diameter of the gasket is smaller than that of the top of the linear bearing, and a stop block is fixedly connected to the bottom of each guide shaft A.

Preferably: each pneumatic gear self-centering mechanism comprises a box body, an air cylinder A, a connecting shaft, a connecting plate A, a connecting plate B, a connecting plate C and a rolling shaft, wherein the air cylinder A, the connecting shaft, the connecting plate A, the connecting plate B, the connecting plate C and the rolling shaft are arranged on the side face of the box body, the connecting plate A is positioned inside the box body, one end of the connecting plate A is clamped with the connecting shaft, the top of the other end of the connecting plate A is fixedly connected with a rack A, the connecting plate B is positioned above the connecting plate A, the bottom of the connecting plate B is fixedly connected with a rack B, a gear is sleeved on the outer side of the rolling shaft, the gear is meshed with the rack A and the rack B, the bottom of the connecting plate C is fixedly connected with the top of one end of the connecting shaft in a clamping manner through the connecting plate A, the air cylinder A is electrically connected with the air valve A, and the end part of a piston rod of the air cylinder A penetrates through the side face of the box body and faces towards one end, away from the connecting shaft A, the top of box body installs the guide rail, the bottom of connecting plate B with the bottom of connecting plate C all follows the guide rail slides.

Preferably: the connecting plate B with connecting plate C side in opposite directions is fixedly connected with fixed block respectively, two the side in opposite directions of fixed block is the semi-circular cambered surface, the external diameter at roller bearing both ends is greater than the external diameter in the middle of the roller bearing, the both ends of roller bearing with the side of box body can be dismantled and be connected, the outside of box body is equipped with the protection casing.

Preferably: the pneumatic centering mechanism comprises a vertically-placed fixing plate A, a fixing plate B, a cylinder B, two guide shafts B and a spring B, wherein the fixing plate B is arranged at intervals in parallel with the fixing plate A, the cylinder B is electrically connected with the air valve B, the two guide shafts B are respectively positioned at the left side and the right side of the cylinder B, the end part of a piston rod of the cylinder B penetrates through the fixing plate A and the fixing plate B, one end of each guide shaft B penetrates through the fixing plate A and the fixing plate B, the outer side of each guide shaft B is sleeved with a guide sleeve and a spring B, the guide sleeves are fixedly connected with the fixing plate A, the spring B is positioned between the guide sleeves and the fixing plate B, the left end and the right end, far away from one side of the fixing plate A, of the fixing plate B are respectively provided with idler wheels, the outer parts of the cylinder B and the guide shafts B are provided with protective covers, and the left ends and right ends of the fixing plate A, the protective covers, The fixed plate B faces to the side face of the cylinder B and is fixedly connected with the side face of the cylinder B.

Preferably: the bottom of the fixed plate A is fixedly connected with a bottom plate, a plurality of reinforcing plates are respectively arranged on the front side and the rear side of the fixed plate A, the reinforcing plates are fixedly connected with the bottom plate and the fixed plate A, one side, far away from the fixed plate B, of the fixed plate A is fixedly connected with a fixed plate C, the end portion of a piston rod of the air cylinder B sequentially penetrates through the fixed plate C, the fixed plate A is fixedly connected with the fixed plate B, a shell of the air cylinder B is fixedly connected with the fixed plate C, a supporting block B is sleeved on the end portion of the guide shaft B and located between the fixed plate B and the spring B, and the supporting block B is fixedly connected with the fixed plate B.

Preferably: the left end and the right end of one side, far away from the fixed plate A, of the fixed plate B are respectively and fixedly connected with a positioning block, the roller is movably connected with the positioning blocks, and the roller rolls along the horizontal direction.

Preferably: the utility model discloses a positioning device, including positioning bracket, positioning disc, elastic floating mechanism, positioning disc, cutting torch, motor, cutting torch, locating screw and locating pin fixedly connected with positioning disc, the center of positioning disc is equipped with the location tang, the location tang is towards two the centre of elastic floating mechanism, the center of positioning disc and the center of axle housing are located same axis, the vertical motor of installing in the upper end of profile modeling cutting machine, the motor shaft is installed at the center of motor, the upper end outside of motor shaft with the outward flange contact of positioning disc, the vertical cutting torch of installing of lower extreme of profile modeling cutting machine, the cutting torch the motor is located same central line.

In conclusion, the utility model has the following beneficial effects:

according to the utility model, the elastic floating mechanism, the pneumatic gear self-centering mechanism and the pneumatic centering mechanism are combined, so that the influence of part errors on axle housing positioning is eliminated, the motor of the profiling cutting machine drives the motor shaft to determine the cutting track along the periphery of the positioning disc, the cutting positioning precision is improved, the high-precision cutting of the axle housing large flange surface is realized, the operation is convenient, the positioning is rapid, the cost is lower, the labor intensity is reduced, and the productivity is improved due to the automatic clamping mode of the pneumatic gear self-centering mechanism and the pneumatic centering mechanism.

Drawings

FIG. 1 is a schematic structural view of an embodiment;

FIG. 2 is another schematic structural view of the embodiment;

FIG. 3 is a schematic structural view of an elastic floating mechanism in the embodiment;

FIG. 4 is a schematic structural view of the interior of the pneumatic gear self-centering mechanism in the embodiment;

FIG. 5 is a schematic structural diagram of a pneumatic centering mechanism in the embodiment.

In the figure, 1, a positioning bracket; 2. a profiling cutter; 3. a work table; 4. cutting slag collecting vehicle; 5. an air valve A; 6. an air valve B; 7. a fixed seat; 8. a guide shaft A; 9. a flat plate; 10. a spring A; 11. a linear bearing; 12. a supporting block A; 13. a gasket; 14. a box body; 15. a cylinder A; 16. a connecting shaft; 17. a connecting plate A; 18. a connecting plate B; 19. connecting plates C; 20. a roller; 21. a rack A; 22. a rack B; 23. a gear; 24. a guide rail; 25. a fixed block; 26. fixing a plate A; 27. a fixing plate B; 28. a cylinder B; 29. a guide shaft B; 30. a guide sleeve; 31. a spring B; 32. a roller; 33. a base plate; 34. a reinforcing plate; 35. a fixing plate C; 36. a support block B; 37. positioning blocks; 38. positioning a plate; 39. a motor; 40. a motor shaft; 41. a cutting torch is provided.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

In which like parts are designated by like reference numerals. It should be noted that the terms "upper", "lower", "left", "right", "front", "rear", "inner", "outer", "bottom" and "top" used in the following description refer to directions in the drawings, but are not limited thereto.

As shown in figures 1-5, the profile cutting device based on eliminating consistency errors of parts comprises

the cutting mechanism comprises a positioning support 1 and a profile modeling cutting machine 2, wherein the positioning support 1 and the profile modeling cutting machine 2 are respectively positioned at the left side and the right side of the pneumatic centering mechanism and are used for cutting a center hole in the center of a large flange face of the axle housing.

The top at work table 3 is all installed to bottom, the bottom of the pneumatic centering mechanism of the bottom of elasticity relocation mechanism, pneumatic gear self-centering mechanism, bottom, the cutting mechanism's of cutting mechanism, and work table 3 is equipped with the cavity, and two elasticity relocation mechanisms are located both ends about the cavity, and cutting sediment collection vehicle 4 has been placed to the below of cavity, and work table 3 installs pneumatic valve A5, pneumatic valve B6.

Each elastic floating mechanism comprises a fixed seat 7, two guide shafts A8 vertically arranged at the front end and the rear end of the fixed seat 7 respectively, a flat plate 9 fixedly arranged at the top of the two guide shafts A8, the outer side of each guide shaft A8 is sleeved with a spring A10 and a linear bearing 11, the lower end of the linear bearing 11 is inserted into the fixed seat 7 and fixedly connected with the fixed seat 7, the top of the linear bearing 11 is positioned at the top of the fixed seat 7, the spring A10 is positioned between the flat plate 9 and the linear bearing 11, the upper end of each guide shaft A8 is sleeved with a supporting block A12, the guide shaft A8 is in interference fit with the supporting block A12, the supporting block A12 is fixedly connected with the flat plate 9, each guide shaft A8 is sleeved with a gasket 13, the gasket 13 is positioned between the spring A10 and the linear bearing 11, the outer diameter of the gasket 13 is larger than that of the spring A10, the outer diameter of the gasket 13 is smaller than that of the top of the linear bearing 11, and the bottom of each guide shaft A8 is fixedly connected with a stop blocks, the top of the fixed seat 7 is detachably connected with the top of the working table 3.

The elastic floating mechanism realizes leveling of a large flange face of the axle housing through combination of the spring A10, the guide shaft A8, the linear bearing 11 and the flat plate 9, and the influence of the external dimension deviation of the axle housing on positioning during molding is solved. The guide shaft A8 cooperates with the linear bearing 11 to slide up and down, when the flat plate 9 moves down, the guide shaft A8 is driven to slide down relative to the linear bearing 11, the spring A10 is compressed, and the elastic force of the spring A10 enables the guide shaft to slide up and down, so that the large flange surface of the axle housing is leveled on the top of the flat plate 9.

Each pneumatic gear self-centering mechanism comprises a box body 14, an air cylinder A15 arranged on the side face of the box body 14, a connecting shaft 16, a connecting plate A17, a connecting plate B18, a connecting plate C19 and a roller 20, wherein the connecting plate A17 is positioned inside the box body 14, one end of a connecting plate A17 is clamped with the connecting shaft 16, the top of the other end of the connecting plate A17 is fixedly connected with a rack A21, the connecting plate B18 is positioned above a connecting plate A17, the bottom of the connecting plate B18 is fixedly connected with a rack B22, a gear 23 is sleeved outside the roller 20, the gear 23 is meshed with the rack A21 and a rack B22, the bottom of the connecting plate C19 is fixedly connected with the top of the connecting plate A17 at one end of the connecting shaft 16, the air cylinder A15 is electrically connected with an air valve A5, the end of a piston rod of the air cylinder A15 penetrates through the side face of the box body 14 and faces one end, away from the connecting shaft 16, the connecting plate A17, a guide rail 24 is arranged at the top of the box body 14, a guide rail 24, the connecting plate 14, and the bottom of the connecting plate B18 and the connecting plate C19 slide along the guide rail 24, the opposite sides of the connecting plate B18 and the connecting plate C19 are fixedly connected with fixing blocks 25 respectively, the opposite sides of the two fixing blocks 25 are semicircular cambered surfaces, the outer diameters of the two ends of the roller 20 are larger than the outer diameter of the middle of the roller 20, the two ends of the roller 20 are detachably connected with the side of the box body 14, and a protective cover is arranged on the outer side of the box body 14.

The pneumatic gear self-centering mechanism takes the cylinder A15 as power and the guide rail 24 as guide, realizes the bidirectional self-centering clamping of the connecting plate B18 and the connecting plate C19 on the axle housing, eliminates the influence of the external dimension of the middle section of the axle housing on the axis positioning, eliminates the semicircular cambered surface of the fixed block 25, satisfy from the centering clamp force to the axle housing in, reduce the area of contact of axial and axle housing, thereby reduce the axial frictional force of axle housing, it is smooth and easy to ensure that pneumatic gear is from the removal of centering mechanism at the tight axle housing in-process of clamp, connecting plate A17 passes through gear 23 and rack A21, meshing between the rack B22 drives connecting plate B18 along 24 directions of guide rail free movement, guide rail 24 plays the guide effect to connecting plate B18 and connecting plate C19's moving direction, the protection casing is guaranteeing that pneumatic gear is from centering mechanism and is pressing from both sides tightly, the life of the inside various parts of box body 14 is influenced to the homoenergetic in the state of unclamping the axle housing that the cutting sediment drops to the box body 14.

The pneumatic centering mechanism comprises a fixing plate A26 which is vertically placed, a fixing plate B27 which is arranged in parallel with a fixing plate A26 at intervals, an air cylinder B28 which is electrically connected with an air valve B6, and two guide shafts B29 which are respectively positioned at the left side and the right side of the air cylinder B28, the end part of a piston rod of the air cylinder B28 penetrates through the fixing plate A26 to be fixedly connected with a fixing plate B27, one end of each guide shaft B29 penetrates through the fixing plate A26 to be fixedly connected with the fixing plate B27, a guide sleeve 30 and a spring B31 are sleeved on the outer side of each guide shaft B29, the guide sleeve 30 is fixedly connected with the fixing plate A26, the spring B31 is positioned between the guide sleeve 30 and the fixing plate B27, rollers 32 are respectively arranged at the left end and the right end of the fixing plate B27 which is far away from the fixing plate A26 side, protective covers are arranged outside the air cylinders B28 and the guide shafts B29, the left end and right end of the fixing plate A26, the protective covers are fixedly connected with the left end and right end of the fixing plate A27 which faces the air cylinder B28, a bottom of the fixing plate A26 is fixedly connected with a bottom plate 33, the front side and the rear side of a fixing plate A26 are respectively provided with a plurality of reinforcing plates 34, the reinforcing plates 34 are fixedly connected with a bottom plate 33 and a fixing plate A26, one side of the fixing plate A26, which is far away from the fixing plate B27, is fixedly connected with a fixing plate C35, the end part of a piston rod of an air cylinder B28 sequentially penetrates through the fixing plate C35, the fixing plate A26 is fixedly connected with the fixing plate B27, the shell of an air cylinder B28 is fixedly connected with the fixing plate C35, the end part of a guide shaft B29 is sleeved with a supporting block B36, the supporting block B36 is positioned between the fixing plate B27 and a spring B31, the supporting block B36 is fixedly connected with the fixing plate B27, the left end and the right end, which are far away from the fixing plate A26, of the left end and right end of the fixing plate B27 are respectively fixedly connected with a positioning block 37, the roller 32 is movably connected with the positioning block 37, the roller 32 rolls along the horizontal direction, and the bottom of the bottom plate 33 is detachably connected with the top of the work table 3.

Cylinder B28 among the pneumatic centering mechanism provides power, cylinder B28 drives guiding axle B29 and promotes fixed plate B27 jointly and realizes two gyro wheels 32, fixed plate B27 carries out the tight location of clamp of self-centering jointly to the arc end of the big flange face of axle housing, ensure the center of alignment axle housing, bottom plate 33 and fixed plate A26 provide the holding power, uide bushing 30 provides the motion direction for guiding axle B29, gyro wheel 32 has reduced the friction with the axle housing, it is smooth and easy to ensure to press from both sides tight process.

Screw and locating pin fixedly connected with positioning disk 38 are passed through to the upper end of locating support 1, the center of positioning disk 38 is equipped with the location tang, the location tang is towards the centre of two elastic floating mechanism, the center of positioning disk 38 is located same axis with the center of axle housing, the vertical motor 39 of installing in upper end of contour cutter 2, motor shaft 40 is installed at the center of motor 39, the upper end outside of motor shaft 40 and the outward flange contact of positioning disk 38, cutting torch 41 is vertically installed to the lower extreme of contour cutter 2, cutting torch 41, motor 39 is located same center line, the bottom of locating support 1, the bottom of contour cutter 2 all can be dismantled with the top of table 3 and be connected, cutting torch 41, motor 39 is located same center line, contour cutter 2 cooperates with positioning disk 38, confirm the cutting orbit, improve the accuracy to the big flange face cutting of axle housing.

Elastic floating mechanism's bottom, the bottom of pneumatic gear self-centering mechanism, the top at work table 3 is all installed to the bottom of pneumatic centering mechanism and cutting mechanism's bottom, work table 3 is equipped with the cavity, both ends about two elastic floating mechanism are located the cavity, cutting sediment collection vehicle 4 has been placed to the below of cavity, work table 3 installs pneumatic valve A5, pneumatic valve B6, pneumatic valve A5 is connected with cylinder A15 electricity, pneumatic valve B6 is connected with cylinder B28 electricity, pneumatic gear self-centering mechanism is controlled respectively to pneumatic valve A5 and pneumatic valve B6, pneumatic centering mechanism, convenient operation is swift.

According to the design, through detailed research on parts, the characteristics of the parts are combined, a method for eliminating consistency errors of the parts is adopted, the parts are matched with the profiling cutting machine 2, about 7 ten thousand yuan is invested in total, and the effect of high precision is achieved in the most economic mode. Through mutually supporting of elastic floating mechanism, pneumatic gear self-centering mechanism and pneumatic centering mechanism, eliminated the influence of spare part error to the axle housing location, adopt positioning disk 38 and profile modeling cutting machine 2 to combine, confirm the cutting orbit of the big flange face of axle housing, cutting sediment collection vehicle 4 is used for collecting the cutting sediment after the axle housing cutting. The positioning clamping and high-precision cutting of the axle housing are realized, the labor intensity is reduced, and the automation degree is improved.

The specific implementation process comprises the following steps:

the axle housing is hung to the top of the elastic floating mechanism and the pneumatic gear self-centering mechanism, so that the bottom of the axle housing is contacted with the top of the elastic floating mechanism, the left end and the right end of the axle housing are respectively positioned between a connecting plate B18 and a connecting plate C19 in the two pneumatic gear self-centering mechanisms, the flat plate 9 is influenced by pressure from the axle housing to move downwards, the guide shaft A8 moves downwards, the spring A10 is compressed, so that leveling is realized on the large flange surface of the axle housing, the air valve A5 is started, the air valve A5 controls the piston rod of the air cylinder A15 to extend out, the end part of the piston rod pushes the connecting shaft 16 to drive the connecting plate A17 to move, the connecting plate A17 drives the connecting plate C19 to move along the guide rail 24 towards the direction of the connecting plate B18, the connecting plate A17 drives the roller 20 to rotate through the rack A21 and the gear 23 in the moving process, the roller 20 drives the connecting plate B18 to move along the guide rail 24 towards the direction of the connecting plate C19 through the gear 23 and the rack B22, the connecting plate B18 and the connecting plate C19 move towards each other in the moving process, so that the purpose that the fixed block 25 of the connecting plate B18 and the fixed block 25 of the connecting plate C19 clamp the axle housing in a self-centering mode is achieved, the air valve B6 is started, the air valve B6 controls the piston rod of the air cylinder B28 to stretch out, the guide shaft B29 slides in the guide sleeve 30, the end portion of the piston rod and the guide shaft B29 push the fixed plate B27 to move, the fixed plate B27 drives the roller 32 to move, the roller 32 moves to the arc-shaped end of the large flange face of the axle housing, the center of the axle housing is located, the profiling cutting machine 2 is started, the motor 39 drives the motor shaft 40 to move along the outer edge of the locating disc 38, the cutting torch 41 moves along the circular shaft under the driving of the motor 39 so as to cut the axle housing, and residues generated by cutting of the cutting torch 41 for cutting the axle housing fall into the cutting slag collecting vehicle 4 through the cavity of the work table 3.

The present embodiments are illustrative, but not restrictive, and changes, modifications, additions, and substitutions may be made within the spirit and scope of the present invention, and those skilled in the art may make modifications to the embodiments as required without any inventive contribution thereto after reading the present specification, but within the scope of the claims of the present invention.

Claims

1. Profile cutting device based on eliminate spare part uniformity error, its characterized in that: comprises that

cutting mechanism, cutting mechanism includes locating support (1), contour cutting machine (2), locating support (1) with contour cutting machine (2) are located respectively pneumatic centering mechanism's the left and right sides for the centre bore at cutting axle housing large flange face center.

2. The contour cutting device based on elimination of part uniformity errors of claim 1, characterized in that: the bottom of elasticity relocation mechanism the bottom of pneumatic gear from centering mechanism the bottom of pneumatic centering mechanism the top at work table (3) is all installed to cutting mechanism's bottom, work table (3) are equipped with the cavity, two elasticity relocation mechanism is located both ends about the cavity, cutting sediment collection vehicle (4) have been placed to the below of cavity, pneumatic valve A (5), pneumatic valve B (6) are installed in work table (3).

3. The contour cutting device based on elimination of part uniformity errors of claim 2, characterized in that: every elasticity floating machanism all includes fixing base (7), two vertical establishments respectively the guiding axle A (8), the fixed mounting at both ends around fixing base (7) are two dull and stereotyped (9) at guiding axle A (8) top, every the outside of guiding axle A (8) all is equipped with spring A (10), linear bearing (11) by the cover, the lower extreme of linear bearing (11) inserts the inside of fixing base (7) and with fixing base (7) fixed connection, the top of linear bearing (11) is located the top of fixing base (7), spring A (10) are located dull and stereotyped (9) with between linear bearing (11).

4. The contour cutting device based on elimination of part uniformity errors of claim 3, characterized in that: the upper end of each guide shaft A (8) is sleeved with a supporting block A (12), each guide shaft A (8) is in interference fit with the supporting block A (12), the supporting block A (12) is fixedly connected with the flat plate (9), each guide shaft A (8) is sleeved with a gasket (13), each gasket (13) is located between the spring A (10) and the linear bearing (11), the outer diameter of each gasket (13) is larger than that of the spring A (10), the outer diameter of each gasket (13) is smaller than that of the top of the linear bearing (11), and a stop block is fixedly connected to the bottom of each guide shaft A (8).

5. The contour cutting device based on elimination of part uniformity errors of claim 2, characterized in that: every pneumatic gear is from centering mechanism all includes box body (14), installs cylinder A (15), connecting axle (16), connecting plate A (17), connecting plate B (18), connecting plate C (19), roller bearing (20) to box body (14) side, connecting plate A (17) are located inside box body (14), the one end of connecting plate A (17) with connecting axle (16) joint, the top fixedly connected with rack A (21) of the connecting plate A (17) other end, connecting plate B (18) are located the top of connecting plate A (17), the bottom fixedly connected with rack B (22) of connecting plate B (18), the outside cover of roller bearing (20) is equipped with gear (23), gear (23) with rack A (21), rack B (22) meshing, the bottom of connecting plate C (19) with connecting plate A (17) joint has the top fixed connection of connecting axle (16) one end, the air cylinder A (15) is electrically connected with the air valve A (5), the end part of a piston rod of the air cylinder A (15) penetrates through the side face of the box body (14) and faces towards one end, far away from the connecting shaft (16), of the connecting plate A (17), a guide rail (24) is installed at the top of the box body (14), and the bottom of the connecting plate B (18) and the bottom of the connecting plate C (19) both slide along the guide rail (24).

6. The contour cutting device based on elimination of part uniformity errors of claim 5, characterized in that: connecting plate B (18) with connecting plate C (19) side in opposite directions is fixedly connected with fixed block (25), two fixed block (25) side in opposite directions is the semi-circular cambered surface, the external diameter at roller shaft (20) both ends is greater than the external diameter in the middle of roller shaft (20), the both ends of roller shaft (20) with the side of box body (14) can be dismantled and be connected, the outside of box body (14) is equipped with the protection casing.

7. The contour cutting device based on elimination of part uniformity errors of claim 2, characterized in that: the pneumatic centering mechanism comprises a fixing plate A (26) which is vertically placed, a fixing plate B (27) which is arranged in parallel with the fixing plate A (26) at intervals, a cylinder B (28) which is electrically connected with the air valve B (6), and two guide shafts B (29) which are respectively positioned at the left side and the right side of the cylinder B (28), wherein the end part of a piston rod of the cylinder B (28) penetrates through the fixing plate A (26) and is fixedly connected with the fixing plate B (27), one end of each guide shaft B (29) penetrates through the fixing plate A (26) and is fixedly connected with the fixing plate B (27), a guide sleeve (30) and a spring B (31) are sleeved on the outer side of each guide shaft B (29), the guide sleeve (30) is fixedly connected with the fixing plate A (26), and the spring B (31) is positioned between the guide sleeve (30) and the fixing plate B (27), fixed plate B (27) are kept away from gyro wheel (32) are installed respectively at both ends about fixed plate A (26) one side, cylinder B (28) with the outside of guiding axle B (29) is equipped with the protection casing, the protection casing with both ends about fixed plate A (26) fixed plate B (27) orientation the side fixed connection of cylinder B (28).

8. The contour cutting device based on elimination of part uniformity errors of claim 7, characterized in that: the bottom of the fixing plate A (26) is fixedly connected with a bottom plate (33), the front side and the rear side of the fixing plate A (26) are respectively provided with a plurality of reinforcing plates (34), the reinforcing plate (34) is fixedly connected with the bottom plate (33) and the fixing plate A (26), one side of the fixing plate A (26) far away from the fixing plate B (27) is fixedly connected with a fixing plate C (35), the end part of the piston rod of the cylinder B (28) sequentially passes through the fixed plate C (35), the fixed plate A (26) and the fixed plate B (27) to be fixedly connected, the shell of the cylinder B (28) is fixedly connected with the fixed plate C (35), a supporting block B (36) is sleeved at the end part of the guide shaft B (29), the supporting block B (36) is positioned between the fixing plate B (27) and the spring B (31), the supporting block B (36) is fixedly connected with the fixing plate B (27).

9. The contour cutting device based on elimination of part uniformity errors of claim 8, characterized in that: the left end and the right end of one side, far away from the fixing plate A (26), of the fixing plate B (27) are fixedly connected with positioning blocks (37) respectively, the roller (32) is movably connected with the positioning blocks (37), and the roller (32) rolls along the horizontal direction.

10. The contour cutting device based on elimination of part uniformity errors of claim 1, characterized in that: the upper end of locating support (1) is passed through screw and locating pin fixedly connected with positioning disk (38), the center of positioning disk (38) is equipped with the location tang, the location tang is towards two the centre of elasticity relocation mechanism, the center of positioning disk (38) is located same axis with the center of axle housing, motor (39) are vertically installed to the upper end of profile modeling cutting machine (2), motor shaft (40) are installed to the center of motor, the upper end outside of motor shaft (40) with the outward flange contact of positioning disk (38), cutting torch (41) are vertically installed to the lower extreme of profile modeling cutting machine (2), cutting torch (41) motor (39) are located same central line.