Assembly positioning device, platform and method

Abstract

The present invention proposes a positioning device, platform and method for assembly, comprising a special-shaped positioning block, a positioning pin, a locking screw and a locking wedge; the special-shaped positioning block comprises a rectangular feature block, one side of the rectangular feature block is provided with an inclined wedge feature block and a square feature block, and the square feature block is provided with the positioning pin; the locking wedge is arranged on the rectangular feature block through the locking screw, and the inclined surface on the locking wedge contacts and cooperates with the inclined surface on the inclined wedge feature block; in the present invention, the side elevation of the locking wedge and the side elevation of the inclined wedge feature block on the special-shaped positioning block can be pressed against the inner side surface of the working platform to be installed by operating the locking screw, so as to realize reliable and accurate locking of the positioning device.

Description

Technical Field

[0001] The present invention belongs to the technical field of assembly tooling, and in particular relates to an assembly positioning device, a platform and a method. Background Art

[0002] The posture adjustment and docking assembly of large-sized parts (such as the assembly and docking of large parts in large machine tools, cars, ships and aircraft, etc.) is an important process in the final assembly of large-scale mechanical equipment products, which has an important impact on the assembly accuracy, assembly efficiency and comprehensive production cost of the products. With the continuous improvement of the production accuracy of large-scale equipment, it is necessary to achieve fast and accurate docking and positioning of large-scale mechanical products of different equipment, different batches and different sizes on the same general assembly auxiliary support system. Therefore, a reconfigurable fast and accurate positioning tooling device is required, and the positioning accuracy is preferably better than 0.05mm.

[0003] The inventors have found that the existing positioning tooling devices have low assembly speed and accuracy when facing products with large volume and weight, and cannot meet the requirements of fast and high-precision positioning of large assembly objects. Summary of the invention

[0004] In order to solve the above problems, the present invention proposes an assembly positioning device and method. In the present invention, by operating the locking screw, the side elevation of the locking wedge block and the side elevation of the inclined wedge feature block on the special-shaped positioning block can be pressed against the inner side surface of the working platform to be installed, thereby achieving reliable and accurate positioning and locking of the positioning device.

[0005] In order to achieve the above-mentioned object, in a first aspect, the present invention provides a positioning device for assembly, which adopts the following technical solution:

[0006] A positioning device for assembly, comprising a special-shaped positioning block, a positioning pin, a locking screw and a locking wedge;

[0007] The special-shaped positioning block comprises a rectangular feature block, a wedge feature block and a square feature block are arranged on one side of the rectangular feature block, and the positioning pin is arranged on the square feature block;

[0008] The locking wedge block is arranged on the rectangular feature block through the locking screw, and the inclined surface on the locking wedge block contacts and cooperates with the inclined surface on the inclined wedge feature block.

[0009] Furthermore, the square feature block has margins on both sides of the contact surface with the oblique wedge feature block, the locking wedge block and the square feature block, forming a T-shaped structure as a whole.

[0010] Furthermore, a transition surface is provided at each corner of the rectangular feature block.

[0011] Furthermore, a slit is provided between the rectangular feature block and the oblique wedge feature block.

[0012] Furthermore, the rectangular feature block is provided with a first cylindrical hole, and the rectangular feature block is provided with a second cylindrical hole coaxial with the first cylindrical hole; the diameter of the first cylindrical hole is smaller than the diameter of the second cylindrical hole.

[0013] Furthermore, the positioning pin comprises a guide cylinder; one end of the guide cylinder is provided with an alignment guide cone, and the other end is provided with a mounting chamfer.

[0014] Furthermore, a wedge-shaped pressing surface is provided on the locking wedge block, and the wedge-shaped pressing surface is in contact and fit with the inclined surface on the inclined wedge feature block.

[0015] Furthermore, the locking wedge is provided with a countersunk hole for accommodating the locking screw.

[0016] In order to achieve the above-mentioned purpose, in a second aspect, the present invention further provides an assembly positioning platform, which adopts the following technical solution:

[0017] An assembly positioning platform comprises a workbench, wherein at least one T-slot is arranged on the workbench; and the assembly positioning device as described in the first aspect is arranged in the T-slot.

[0018] In order to achieve the above-mentioned purpose, in a third aspect, the present invention also provides an assembly positioning method, which adopts the following technical solution:

[0019] An assembly positioning method, using the assembly positioning platform as described in the second aspect, comprises:

[0020] Install the positioning pin on the square feature block and install the whole component in the T-slot on the workbench; tighten the locking screw so that the side surface of the locking wedge block and the vertical surface of the side wall of the inclined wedge feature block are pressed against the side surface of the T-slot to achieve positioning;

[0021] Remove the locking screw and loosen the locking wedge and T-slot; push the special-shaped positioning block to the required new positioning point to achieve assembly movement.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] In the present invention, the locking screw can be operated to press the side surface of the locking wedge block and the side surface of the inclined wedge feature block on the special-shaped positioning block against the inner side surface of the work platform to be installed, thereby realizing reliable and accurate locking of the positioning device. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The drawings in the specification that constitute a part of this embodiment are used to provide a further understanding of this embodiment. The schematic embodiments of this embodiment and their descriptions are used to explain this embodiment and do not constitute improper limitations on this embodiment.

[0025] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of the present invention;

[0026] Figure 2 This is a schematic diagram of the structure of a special-shaped positioning block according to Embodiment 1 of the present invention;

[0027] Figure 3 This is a schematic diagram of the structure of a special-shaped positioning block according to Embodiment 1 of the present invention;

[0028] Figure 4 This is a schematic diagram of the locking wedge structure of Example 1 of the present invention;

[0029] Figure 5 This is a schematic diagram of the positioning pin structure of Example 1 of the present invention;

[0030] Figure 6 This is a schematic diagram of the platform structure of Example 2 of the present invention;

[0031] Among them, 1. special-shaped positioning block, 2. positioning pin, 3. locking screw, 4. locking wedge, 5. square feature block, 6. oblique wedge feature block, 7. rectangular feature block, 8. transition surface, 9. threaded through hole, 10. end face, 11. guide surface, 12. first cylindrical hole, 13. guide symmetry surface, 14. second cylindrical hole, 15. slit, 16. upper surface, 17. side wall vertical surface, 18. oblique wedge surface, 19. wedge-shaped pressing surface, 20. countersunk hole, 21. side surface, 22. guide cylinder, 23. alignment guide cone, 24. installation chamfer, 25. workbench, 26. T-slot. DETAILED DESCRIPTION

[0032] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0033] It should be noted that the following detailed descriptions are exemplary and are intended to provide further explanation of the present application. Unless otherwise specified, all technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the art to which the present application belongs.

[0034] Embodiment 1:

[0035] like Figure 1 As shown, this embodiment provides a positioning device for assembly, including a special-shaped positioning block 1, a positioning pin 2, a locking screw 3 and a locking wedge 4.

[0036] like Figure 2As shown, the special-shaped positioning block 1 includes three major parts: a square feature block 5, an oblique wedge feature block 6 and a rectangular feature block 7; wherein the rectangular feature block 7 is located at the bottom, and the square feature block 5 and the oblique wedge feature block 6 are located above the rectangular feature block 7; the square feature block 5 is located at the rear side, and the oblique wedge feature block 6 is located at the front side; the special-shaped positioning block 1 can be manufactured by an integral molding method and processed by milling and electrospark machining methods.

[0037] like Figure 3 As shown, the rectangular feature block 7 includes front and rear end faces 10, left and right symmetrical guide faces 11, a threaded through hole 9 and four arc transition surfaces 8; wherein the guide surface 11 is used to cooperate with the T-slot 26, the threaded through hole 9 is used for connecting the locking wedge block 4, and the four arc transition surfaces 8 facilitate the installation of the special-shaped positioning block in the non-through T-slot 26.

[0038] The square feature block 5 is located at the rear end of the rectangular feature block 7, and includes a left-right symmetrical guide symmetry surface feature 13, a second cylindrical hole 14, a first cylindrical hole 12, etc.; in this embodiment, the distance between the two guide feature surfaces 13 can be processed with h6 tolerance to ensure that the guide positioning accuracy is better than 0.02mm, and the second cylindrical hole 14 can be processed with H6 tolerance, and the surface roughness is better than Ra1.6.

[0039] like Figure 3 As shown, the wedge-shaped feature block 6 is in front of the left side of the rectangular feature block 7, and specifically includes an upper surface 16, a side wall vertical surface 17 and an inclined wedge surface 18; the side wall vertical surface 17 coincides with the guide surface of the square feature block 5 and is located on the same geometric plane in space; the angle between the inclined wedge surface feature 18 and the side wall vertical surface feature 17 is between 5° and 12°, and the specific value can be calculated according to the required clamping force; in order to ensure the reliability of the special-shaped positioning block when locking, the wedge-shaped feature 6 and the square feature block 5 are separated in the spatial structure through the slit 15.

[0040] The locking wedge block 4 includes a wedge-shaped pressing surface 19, a countersunk hole 20, a side surface 21, and upper and lower surfaces and front and rear end surfaces; the countersunk hole 20 is a hexagon socket screw countersunk hole, specifically composed of a large countersunk hole and a through cylindrical hole. To facilitate the disassembly of the locking wedge block, a thread feature is provided in the through cylindrical hole, so that the locking wedge block 4 can be removed by using the cover screw. The inclination angle of the wedge-shaped pressing surface feature corresponds to the inclined wedge surface 18 of the wedge-shaped feature block, and the value range is between 5° and 12°, ensuring the reliable self-locking characteristics after the inclined wedge is clamped.

[0041] like Figure 5As shown, the locating pin 2 is used to install the assembly equipment; the locating pin 2 includes an alignment guide cone 23, a guide cylinder 22 and an installation chamfered surface 24; the alignment guide cone 23 has a taper of 15°, which can realize the accurate alignment and guiding installation of the equipment to be assembled, reducing the difficulty of initial alignment; it can be understood that a locating hole matching the shape of the locating pin 2 is provided on the equipment to be assembled or the equipment to be positioned, and an auxiliary device with a locating hole can also be fixed on the equipment to be assembled or the equipment to be positioned. The connection between the locating pin 2 and the equipment to be assembled or the equipment to be positioned, as well as the subsequent assembly process, are all conventional settings, and do not belong to the main innovation of the present invention, and will not be described in detail here.

[0042] The specific implementation of this embodiment is as follows:

[0043] First, the locating pin 2 is installed in the second column hole 14 on the square feature 5 of the special-shaped locating block 1 through a transition fit clearance; secondly, the locking wedge block 4 is assembled into an integral component in a loose connection manner through the locking screw 3; thirdly, the assembled integral component is installed in the T-slot 26 on the workbench 25 through the guide surface 13.

[0044] By tightening the locking screw 3 with a torque wrench, the side surface 21 of the locking wedge block 4 and the side surface 17 of the inclined wedge feature block 6 of the special-shaped positioning block 1 are pressed against the T-slot 26 of the workbench 25, thereby achieving reliable and accurate locking of the positioning device.

[0045] If the positioning point needs to be re-determined during assembly of the product to be assembled, first remove the locking screw 3 with an Allen wrench, then loosen the locking wedge 4 and the T-slot 26 with the cover-opening screw; finally, push the special-shaped positioning block 1 to the desired new positioning point, repeat the above steps, and reliably lock the positioning device.

[0046] This embodiment provides a fast and high-precision positioning device for large-scale product production assembly lines; it can be rearranged and adjusted according to assembly needs, with an accuracy of not less than 0.05mm;

[0047] In this embodiment, the special-shaped positioning block 1 is installed in the T-slot 26, and the positioning pin 2 is installed on the special-shaped positioning block 1; the locking wedge 4 is pressed by locking the hexagon socket screw; under the action of the locking force, the locking wedge 4 reliably clamps the entire positioning device in the T-slot 26; because the locking wedge has a self-locking effect, the locking reliability of the high-precision positioning device is guaranteed; the positioning accuracy is guaranteed by the matching accuracy of the guide surface characteristics of the special-shaped positioning block 1 and the guide surface of the T-slot 26; if the position of the high-precision positioning device needs to be changed, it is only necessary to loosen the locking screw 3 and use the cover-opening screw to loosen and remove the locking wedge 4; next, slide the special-shaped positioning block 1 along the workbench T-slot to the required position and re-lock it.

[0048] Embodiment 2:

[0049] like Figure 6 As shown, this embodiment provides an assembly positioning platform, including a workbench 25, on which at least one T-slot 26 is disposed; the T-slot 26 is provided with an assembly positioning device as described in the first aspect.

[0050] Embodiment 3:

[0051] This embodiment provides an assembly positioning method, which uses the assembly positioning platform as described in the second aspect, including:

[0052] Install the positioning pin 2 on the square feature block 5, and install the whole component in the T-slot 26 on the workbench 25; tighten the locking screw 3 so that the side surface of the locking wedge block 4 and the vertical surface of the side wall of the inclined wedge feature block 6 are pressed against the side surface of the T-slot 26 to achieve positioning;

[0053] Remove the locking screw 3, loosen the locking wedge 4 and the T-slot 26; push the special-shaped positioning block 1 to the required new positioning point to achieve assembly movement.

[0054] The above description is only a preferred embodiment of the present embodiment and is not intended to limit the present embodiment. For those skilled in the art, the present embodiment may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present embodiment shall be included in the protection scope of the present embodiment.

Claims

1. A positioning device for assembly, characterized in that: It includes special-shaped positioning blocks, positioning pins, locking screws and locking wedges; The special-shaped positioning block comprises a rectangular feature block, a wedge feature block and a square feature block are arranged on one side of the rectangular feature block, and the positioning pin is arranged on the square feature block; The locking wedge block is arranged on the rectangular feature block through the locking screw, and the inclined surface on the locking wedge block contacts and cooperates with the inclined surface on the inclined wedge feature block; The rectangular feature block includes front and rear end faces, left and right symmetrical guide faces, a threaded through hole and four arc transition faces, wherein the guide face is used to cooperate with the T-slot, the threaded through hole is used to connect the locking wedge block, and the four arc transition faces facilitate the installation of the special-shaped positioning block in the non-through T-slot; The square feature block is located at the rear end of the rectangular feature block, and includes a bilaterally symmetrical guide symmetry surface, a second cylindrical hole and a first cylindrical hole, wherein the first cylindrical hole is coaxial with the second cylindrical hole, and the diameter of the first cylindrical hole is smaller than the diameter of the second cylindrical hole; The locking wedge block comprises a wedge-shaped pressing surface, a countersunk hole, a side elevation, an upper surface, a lower surface, and a front and rear end surface; the countersunk hole is a hexagon socket screw countersunk hole, which is composed of a large blind countersunk hole and a through cylindrical hole; The locating pin comprises a guide cylinder; an alignment guide cone is arranged at one end of the guide cylinder, and a mounting chamfer is arranged at the other end; the square feature block has margins on both sides of the contact surface with the oblique wedge feature block, the locking wedge block and the square feature block, and the whole constitutes a T-shaped structure.

2. An assembly positioning device as claimed in claim 1, characterized in that: A slit is arranged between the rectangular feature block and the oblique wedge feature block.

3. An assembly positioning device as claimed in claim 1, characterized in that: The wedge-shaped pressing surface is in contact with and matched with the inclined surface on the inclined wedge feature block.

4. An assembly positioning device as claimed in claim 1, characterized in that: The countersunk hole on the locking wedge is used to accommodate the locking screw.

5. An assembly positioning platform, characterized in that: It comprises a workbench, on which at least one T-slot is arranged; and the assembly positioning device according to any one of claims 1 to 4 is arranged in the T-slot.

6. A positioning method for assembly, characterized in that: The assembly positioning platform as claimed in claim 5 is used, comprising: Install the positioning pin on the square feature block and install the whole component in the T-slot on the workbench; tighten the locking screw so that the side surface of the locking wedge block and the vertical surface of the side wall of the inclined wedge feature block are pressed against the side surface of the T-slot to achieve positioning; Remove the locking screw and loosen the locking wedge and T-slot; push the special-shaped positioning block to the required new positioning point to achieve assembly movement.

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