CN110961842A

CN110961842A - Positioning device

Info

Publication number: CN110961842A
Application number: CN201911277054.1A
Authority: CN
Inventors: 董普林; 刘大永
Original assignee: Tianjin Guangtong Automobile Co ltd; Yinlong New Energy Co Ltd
Current assignee: Tianjin Guangtong Automobile Co ltd; Yinlong New Energy Co Ltd
Priority date: 2019-12-12
Filing date: 2019-12-12
Publication date: 2020-04-07

Abstract

The invention provides a positioning device, which comprises a positioning platform; the positioning part comprises a supporting seat, a fixed shaft and a positioning shaft, the supporting seat is arranged on the positioning platform, the positioning shaft is arranged on the supporting seat in a height-adjustable manner, the positioning shaft is detachably arranged at the end part of the fixed shaft, and the axis of the positioning shaft and the axis of the fixed shaft are coaxially arranged; the positioning shafts are two, the two positioning shafts are arranged at two ends of the fixing shaft in a one-to-one correspondence mode, and the two positioning shafts are used for penetrating into the two positioning holes of the to-be-positioned parts in a one-to-one correspondence mode. Adopt above-mentioned scheme, will be located two location axles on the fixed axle and penetrate two locating holes of treating the setting element respectively in, alright realize two coaxial positioning of treating the setting element, then carry out operations such as welding, alright guarantee two axialities of treating the setting element. Moreover, the positioning shaft is detachably arranged on the fixed shaft, and the positioning shaft can be conveniently detached after the positioning piece is assembled, so that the positioning device and the positioning piece to be separated are realized.

Description

Positioning device

Technical Field

The invention relates to the technical field of vehicle production, in particular to a positioning device.

Background

In the full-load body frame manufacturing industry, the production and manufacturing of the chassis truss frame assembly is the first station of a body frame welding line. Meanwhile, the manufacturing precision of each structure of the truss framework is high and low, so that the assembly precision of subsequent chassis parts can be directly influenced, and the truss framework is used as a key core assembly for manufacturing the chassis of the whole vehicle and plays a vital role in the manufacturing production of the whole vehicle.

In the welding of the vehicle body framework, the processing means adopted by each company is different, most companies generally adopt a welding tool mode to position and assemble and weld an object to be welded on the welding tool, and the positioning size precision is ensured. And after demolding, full-welding forming is carried out, and finally the precision required by the design drawing of the product is achieved. The structural design of the welding tool or the positioning forming die is different from different tool designers in design experience, design style, positioning principle, clamping principle and demoulding mode, so that the truss framework welding tool is reasonable in structural design, manufacturing accuracy and manufacturing process are reasonably used according to process standards, and the tool is the key of the processing accuracy of each part of the truss framework.

The chassis truss is characterized in that a suspension welding assembly is involved in the chassis truss, and the requirement for welding and positioning is high in precision when the chassis truss is used as a whole vehicle leaf spring.

The existing operation mode is that a riveter uses a measuring tape to measure and then positions and welds a plate spring shaft sleeve mounting bracket. The positioning precision depends on the measuring means of the riveter and the measuring fineness of each vehicle, so that the quality problem caused by human negligence is easy to generate; meanwhile, the two circular hole structures are coaxial in detection, so that the detection difficulty of inspectors is also high.

Disclosure of Invention

The invention provides a positioning device, which aims to solve the problem that two parts needing coaxial positioning are difficult to position in the prior art.

In order to solve the above problem, the present invention provides a positioning device, comprising: positioning the platform; the positioning part comprises a supporting seat, a fixed shaft and a positioning shaft, the supporting seat is arranged on the positioning platform, the positioning shaft is arranged on the supporting seat in a height-adjustable manner, the positioning shaft is detachably arranged at the end part of the fixed shaft, and the axis of the positioning shaft and the axis of the fixed shaft are coaxially arranged; the positioning shafts are arranged at two ends of the fixing shaft in a one-to-one correspondence mode, and the two positioning shafts are used for penetrating into two positioning holes of the to-be-positioned piece in a one-to-one correspondence mode.

Furthermore, the end part of the fixed shaft is provided with a mounting hole, one end of the positioning shaft can be arranged in the mounting hole in a penetrating mode in a pulling mode, and the axis of the mounting hole is coaxial with the axis of the positioning shaft.

Furthermore, the diameter of the positioning shaft is smaller than the maximum outer diameter of the fixing shaft, and the end face of the fixing shaft is used for positioning the to-be-positioned piece in the axial direction of the fixing shaft.

Furthermore, a waist-shaped hole is vertically formed in the supporting seat, the positioning portion further comprises a fastening piece, the fastening piece penetrates through the waist-shaped hole, the height position of the fastening piece in the waist-shaped hole is adjustable, and the fixing shaft is connected with the supporting seat through the fastening piece.

Further, the supporting seat comprises an upright column and a first connecting plate arranged on the upright column, the waist-shaped hole is formed in the first connecting plate, and the upright column is connected with the positioning platform.

Furthermore, location portion still includes the second connecting plate, the second connecting plate is fixed to be set up on the fixed axle, the fastener will the second connecting plate is connected on the first connecting plate to realize the fixed axle with the connection of supporting seat.

Further, the supporting seat further comprises a bottom plate, and the bottom plate is arranged at the bottom of the upright post; the size of the bottom plate is larger than that of the upright column in the direction perpendicular to the length of the upright column; the bottom plate is arranged on the positioning platform in a position-adjustable manner.

Furthermore, the stand includes a plurality of connection heightening columns, and two adjacent connection heightening columns are detachably connected according to height requirements.

Furthermore, the positioning part is a plurality of, and a plurality of the positioning parts are distributed on the positioning platform.

Further, the coaxiality error of the axes of the two positioning shafts is within 0.5 mm.

The technical scheme of the invention is applied to provide the positioning device, and the positioning device comprises a positioning platform; the positioning part comprises a supporting seat, a fixed shaft and a positioning shaft, the supporting seat is arranged on the positioning platform in an adjustable position, the positioning shaft is arranged on the supporting seat in an adjustable height, the positioning shaft is detachably arranged at the end part of the fixed shaft, and the axis of the positioning shaft and the axis of the fixed shaft are coaxially arranged; the positioning shafts are two, the two positioning shafts are arranged at two ends of the fixing shaft in a one-to-one correspondence mode, and the two positioning shafts are used for penetrating into the two positioning holes of the to-be-positioned parts in a one-to-one correspondence mode. Adopt above-mentioned scheme, will be located two location axles on the fixed axle and penetrate two locating holes of treating the setting element respectively in, alright realize two coaxial positioning of treating the setting element, then carry out operations such as welding, alright guarantee two axialities of treating the setting element. Moreover, the positioning shaft is detachably arranged on the fixed shaft, and the positioning shaft can be conveniently detached after the positioning piece is assembled, so that the positioning device and the positioning piece to be separated are realized. And the supporting seat is adjustably arranged, and the mounting height of the positioning shaft is adjustably arranged, so that the position can be adjusted according to different products, the positioning device is suitable for positioning operation of products with different sizes, and the universality of the positioning device is improved.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:

FIG. 1 is a schematic structural diagram of a positioning device provided by an embodiment of the invention;

FIG. 2 shows a schematic structural view of the positioning part in FIG. 1;

FIG. 3 shows an exploded view of the locator of FIG. 2;

FIG. 4 shows a schematic view of the positioning device of FIG. 1 in use;

fig. 5 shows a schematic diagram of the positioning part and the part to be positioned in fig. 4.

Wherein the figures include the following reference numerals:

10. positioning the platform; 20. a positioning part; 21. a supporting seat; 22. a fixed shaft; 23. positioning the shaft; 24. a column; 25. a first connecting plate; 26. a second connecting plate; 27. a base plate.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in the drawings, an embodiment of the present invention provides a positioning apparatus including: a positioning stage 10; the positioning part 20 comprises a supporting seat 21, a fixed shaft 22 and a positioning shaft 23, the supporting seat 21 is arranged on the positioning platform 10 in a position-adjustable manner, the positioning shaft 23 is arranged on the supporting seat 21 in a height-adjustable manner, the positioning shaft 23 is detachably arranged at the end part of the fixed shaft 22, and the axis of the positioning shaft 23 is coaxial with the axis of the fixed shaft 22; the number of the positioning shafts 23 is two, the two positioning shafts 23 are correspondingly arranged at two ends of the fixing shaft 22, and the two positioning shafts 23 are used for correspondingly penetrating into two positioning holes to be positioned so as to ensure the coaxiality of the two positioning holes.

Adopt above-mentioned scheme, will be located two location axles 23 on fixed axle 22 and penetrate two locating holes of treating the setting element respectively in, alright realize two coaxial positioning of treating the setting element, then carry out operations such as welding, alright guarantee two axialities of treating the setting element. Furthermore, the positioning shaft 23 is detachably disposed on the fixing shaft 22, so that the positioning shaft 23 can be conveniently detached after the to-be-positioned member is assembled, thereby achieving separation of the positioning device and the to-be-positioned member. In addition, the position of the supporting seat 21 of the positioning part 20 is adjustably arranged, and the installation height of the positioning shaft 23 is adjustably arranged, so that the position can be adjusted according to different products, the positioning operation of the products with different sizes is adapted, and the universality of the positioning device is improved.

In the present embodiment, the end of the fixed shaft 22 has a mounting hole, one end of the positioning shaft 23 is removably inserted into the mounting hole, and the axis of the mounting hole is coaxial with the axis of the positioning shaft 23. By adopting the arrangement, the operation is simple, the disassembly and the assembly are convenient, and the coaxiality of the positioning shaft 23 and the fixed shaft 22 can be ensured.

Optionally, the positioning shaft 23 includes a first positioning section and a second positioning section connected to each other, the diameter of the first positioning section is larger than that of the second positioning section, the first positioning section is used for penetrating into the to-be-positioned member, and the second positioning section is used for penetrating into the mounting hole of the fixing shaft 22. This facilitates the assembly and positioning of the positioning shaft 23 and the fixing shaft 22, and also facilitates the assembly and positioning of the positioning shaft 23 and the member to be positioned.

In the present embodiment, the diameter of the positioning shaft 23 is smaller than the maximum outer diameter of the fixing shaft 22, and the end surface of the fixing shaft 22 is used for positioning the positioning member to be positioned in the axial direction of the fixing shaft 22. Through the arrangement, the positioning piece to be positioned in the axial direction of the fixed shaft 22 can be positioned, and the axial positioning function of the positioning piece to be positioned is completed. .

In this embodiment, the supporting seat 21 has a vertically disposed waist-shaped hole, the positioning portion 20 further includes a fastening member, the fastening member is inserted into the waist-shaped hole, the height position of the fastening member in the waist-shaped hole is adjustable, and the fixing shaft 22 is connected to the supporting seat 21 through the fastening member. Thus, the installation height of the fixing shaft 22 can be conveniently adjusted through the matching of the fastener and the kidney-shaped hole so as to match with a product.

In this embodiment, the supporting seat 21 includes an upright column 24 and a first connecting plate 25 disposed on the upright column 24, the waist-shaped hole is located on the first connecting plate 25, and the upright column 24 is connected to the positioning platform 10. The arrangement is convenient for the arrangement and connection of the components.

Further, the positioning portion 20 further includes a second connecting plate 26, the second connecting plate 26 is fixedly disposed on the fixing shaft 22, and the fastening member connects the second connecting plate 26 to the first connecting plate 25 to connect the fixing shaft 22 and the supporting seat 21. Thus, the contact area can be increased and the connection reliability can be improved by the cooperation of the second connecting plate 26 and the first connecting plate 25.

Optionally, the positioning portion 20 further includes a transition plate, the second connecting plate 26 is connected to the fixing shaft 22 through the transition plate, one end of the transition plate is a plane and is connected to the second connecting plate 26, and the other end of the transition plate is an arc surface and is connected to the arc surface of the fixing shaft 22, so that the connection strength between the second connecting plate 26 and the fixing shaft 22 can be improved.

In this embodiment, the support base 21 further includes a bottom plate 27, the bottom plate 27 is disposed at the bottom of the upright 24; the dimension of the base plate 27 is greater than the dimension of the upright 24 in a direction perpendicular to the length of the upright 24; the base plate 27 is arranged on the positioning platform 10 in a position-adjustable manner. This can improve the connection strength between the support base 21 and the positioning platform 10 and the stability of the support base 21 through the bottom plate 27. The base plate 27 may be connected to the positioning platform 10 by fasteners or welding.

In the present embodiment, the upright column 24 includes a plurality of connecting elevated columns, and two adjacent connecting elevated columns are detachably connected. This allows for the selection of a suitable number of connection-heightening column connections as required to achieve height adjustment of the column 24 to correspond to the product.

In the present embodiment, there are a plurality of positioning portions 20, and the plurality of positioning portions 20 are distributed on the positioning platform 10. The positioning parts to be treated can be positioned by the positioning parts 20, so that the positioning precision of the positioning parts of the multiple groups of plate spring shaft sleeve assemblies in the whole vehicle is achieved.

In the present embodiment, the coaxiality error of the axes of the two positioning shafts 23 is within 0.5 mm. Through the limitation, the coaxiality of the two to-be-positioned parts can be ensured.

Alternatively, the positioning platform 10 includes a platen and a plurality of adjusting seats arranged at the bottom of the platen, the positioning portion 20 is arranged on the platen, and the adjusting seats are height-adjustably arranged to adjust the levelness and stability of the platen.

Optionally, the positioning device further includes an auxiliary positioning structure, the auxiliary positioning structure is disposed on the positioning platform 10, the auxiliary positioning structure is disposed at an interval from the positioning portion 20, and the auxiliary positioning structure is used for positioning other parts in the frame. The auxiliary positioning structure comprises a vertical beam, a limiting plate and a limiting shaft, wherein the vertical beam is arranged on the positioning platform 10, the limiting plate is fixedly arranged at the upper end of the vertical beam, the limiting plate is inclined relative to the vertical direction, and the limiting shaft is perpendicular to the limiting plate. The limiting shaft is used for penetrating the frame, and the limiting plate is used for limiting and matching with a shock absorber support of the frame. Through the arrangement, other parts in the frame can be conveniently and accurately positioned to carry out operations such as welding, product quality is guaranteed, and production efficiency is improved.

The positioning device needs to pay attention to the following technical problems during design, manufacture and implementation:

1. selection of the reference plane: the flatness precision of the plane on the welding platform (namely, a positioning platform) processed by using the numerical control boring and milling equipment can reach 0.1mm, and in order to ensure the positioning precision of the positioning device in the height direction (Z direction), the welding platform is used as a base plane to carry out processing operation on the welding platform.

2. The design that the axiality of three section axles (being fixed axle and location axle) of frock body (being location portion) is controlled in 0.5 mm: the processing is carried out by using a common lathe (the equipment precision is 0.01mm), the coaxiality of a middle 'fixed shaft' main body is guaranteed to be within 0.2mm after the processing, the quantity positioning blind holes are lathed at two ends of the middle 'fixed shaft', and the coaxiality precision is guaranteed to be within 0.2 mm. The tooling with the insertion shafts at two ends is designed, the insertion shafts are in small clearance fit with two blind holes in a fixed shaft (the tolerance of the blind holes is phi A + 0- +0.1, the tolerance of the shafts is phi A-0.05- +0.1, namely, the maximum fit clearance is 0.2, the machining precision of the two shafts is not more than the machining precision of equipment, and the design requirement of the tooling body is met). After the tool is assembled, the coaxiality of the splicing shafts at the two ends can reach within 0.5 mm;

3. selecting a tool positioning shaft and a plate spring sleeve in tolerance fit: the tool positioning shaft is matched with the welding sleeve in an inserting mode, and a design standard of small-gap fit of a hole and the shaft is adopted. Namely (the tolerance of the inner hole of the plate spring shaft sleeve is phi B-0.05- +0.05, the tolerance of the inserting shaft is phi B-0.1- + 0.2, namely the maximum matching clearance is 0.25, and the design precision of the matching shaft diameter of the inserting shaft and the plate spring sleeve meets the positioning precision of a to-be-positioned part (the plate spring sleeve) in a drawing, meanwhile, the plate spring sleeve is considered to be thermally deformed in welding, and in order to facilitate demoulding after welding, the matching clearance of the inserting shaft is enlarged to the tolerance of phi B-0.2- + 0.3.

Assembling each part in the components (such as a front plate spring front shaft sleeve positioning part, a front plate spring rear shaft sleeve positioning part, a rear plate spring front shaft sleeve positioning part and a rear plate spring rear shaft sleeve positioning part) in the positioning device, debugging the height of each part, and meeting the requirement of the positioning size of each component processing part drawing; and the position size (X direction or vehicle advancing direction) between each group of positioning parts and each group is debugged, so that the requirement of four groups of positioning sizes of the plate spring suspension assembly is met. The preparation of the tool is finished.

And inserting each group of plate spring shaft sleeve mounting supports onto the positioning shafts of the corresponding positioning parts, inserting the assembly and the corresponding middle fixing shafts in place, pushing the parts to the limiting positions in the Y direction (the vehicle width direction), and finishing the assembly of other parts according to the steps. At the moment, the positioning of each plate spring shaft sleeve support is finished, and the subsequent assembling and welding work of the frame framework is organized.

The technical scheme has the following beneficial effects:

1. the positioning difficulty is reduced: the original traditional process is that the measuring tape is used for positioning and welding after the central dimension of every two plate spring mounting bracket shaft sleeves in the same group is measured, and the positioning means is laggard. After the positioning device is used, parts to be welded are directly inserted into the tool and pushed to the tool for limiting welding, and the operation is convenient and fast.

2. The positioning efficiency is improved: because of its two hole space location condition, use the frock location to replace originally using tape measure measurement location, the more former man-hour of location part size location reduces, its welding overall efficiency promotes promptly.

3. The level and number of operators required to be reduced: originally, the key work step is completed by the cooperation of high-grade riveter operation, common worker measurement and welding cooperative operation. After the tool positioning device is used, a common welder can weld and position the workpiece in a loose manner with controllable precision.

4. The quality assurance rate is high: the positioning device is used according to the principle of easy work in the dynamic changing method and the principle of tool utilization, so that the dependence on the operation of a person is reduced, and the quality problem caused by artificial relaxation is solved.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A positioning device, comprising:

a positioning platform (10);

the positioning part (20) comprises a supporting seat (21), a fixing shaft (22) and a positioning shaft (23), the supporting seat (21) is arranged on the positioning platform (10), the positioning shaft (23) is arranged on the supporting seat (21) in a height-adjustable manner, the positioning shaft (23) is detachably arranged at the end part of the fixing shaft (22), and the axis of the positioning shaft (23) is coaxial with the axis of the fixing shaft (22); the positioning shafts (23) are two, the two positioning shafts (23) are arranged at two ends of the fixed shaft (22) in a one-to-one correspondence mode, and the two positioning shafts (23) are used for penetrating into two positioning holes of the to-be-positioned piece in a one-to-one correspondence mode.

2. The positioning device according to claim 1, wherein the end of the fixed shaft (22) has a mounting hole, one end of the positioning shaft (23) is removably inserted into the mounting hole, and the axis of the mounting hole is coaxial with the axis of the positioning shaft (23).

3. The positioning device according to claim 1, characterized in that the diameter of the positioning shaft (23) is smaller than the maximum outer diameter of the fixed shaft (22), and the end surface of the fixed shaft (22) is used for positioning the member to be positioned in the axial direction of the fixed shaft (22).

4. The positioning device according to claim 1, wherein the supporting seat (21) has a vertically disposed waist-shaped hole, the positioning portion (20) further comprises a fastening member, the fastening member is inserted into the waist-shaped hole, the height position of the fastening member in the waist-shaped hole is adjustable, and the fixing shaft (22) is connected with the supporting seat (21) through the fastening member.

5. The positioning device according to claim 4, characterized in that said support seat (21) comprises an upright (24) and a first connecting plate (25) arranged on said upright (24), said kidney-shaped hole being located on said first connecting plate (25), said upright (24) being connected to said positioning platform (10).

6. The positioning device according to claim 5, wherein the positioning portion (20) further comprises a second connecting plate (26), the second connecting plate (26) is fixedly arranged on the fixed shaft (22), and the fastening member connects the second connecting plate (26) to the first connecting plate (25) to realize the connection of the fixed shaft (22) and the supporting seat (21).

7. The positioning device according to claim 5, wherein said support seat (21) further comprises a bottom plate (27), said bottom plate (27) being arranged at the bottom of said upright (24); the size of the bottom plate (27) is larger than that of the upright post (24) in the direction vertical to the length of the upright post (24); the base plate (27) is arranged on the positioning platform (10) in a position-adjustable manner.

8. The positioning device according to claim 5, wherein said upright (24) comprises a plurality of connecting heightening columns, and two adjacent connecting heightening columns are detachably connected.

9. The positioning device according to claim 1, characterized in that the positioning part (20) is provided in plurality, and a plurality of positioning parts (20) are distributed on the positioning platform (10).

10. The positioning device according to claim 1, characterized in that the coaxiality error of the axes of the two positioning shafts (23) is within 0.5 mm.