Positioning and locking device for automobile trial-manufacturing

Abstract

The invention discloses a positioning and locking device for automobile trial-manufacturing. The positioning and locking device comprises a base structure, a supporting and positioning structure, a positioning pin structure and a locking sleeve. The base structure is used for supporting a structure above the base structure; the supporting and positioning structure is fixed to the base structure and used for supporting and positioning lower automobile body parts. The positioning pin structure comprises a positioning pin seat and a positioning pin arranged above the positioning pin seat, the positioning pin seat is used for penetrating through a lower automobile body part to support an upper automobile body part, and the positioning pin penetrates through a positioning hole in the upper automobile body part to be positioned; and the locking sleeve and the positioning pin are matched to lock and position the upper vehicle body part. The automobile trial-manufacturing positioning and locking device is reasonable in structural design, simplifies a part positioning structure, releases the operation space of part welding equipment, is high in positioning precision, is suitable for positioning design of automobile body trial-manufacturing clamp parts with complex structures, and improves the production efficiency and the operation satisfaction degree of staff.

Description

Technical Field

[0001] This invention relates to the field of automobile prototyping technology, and in particular to an automobile prototyping positioning and locking device. Background Technology

[0002] For vehicle body prototyping fixtures, the industry generally uses a method where one side of the part is positioned by a support and locating pin, while the other side is pressed against the support to achieve the purpose of positioning and clamping the part. However, due to the high integration and complex design structure of prototyping fixtures, there are situations where the part clamping mechanism cannot be arranged or, if arranged, occupies the space of the welding channel, affecting the effective positioning of the part and the accessibility of welding.

[0003] For example, patent CN116372476A discloses a welding fixture for automotive body-in-white, which includes a fixture base plate, a clamping mechanism, a positioning mechanism, a measuring mechanism, and an auxiliary system. The clamping mechanism is located on both sides of the upper surface of the fixture base plate, and the positioning mechanism is located in the middle of the fixture base plate. The clamping mechanism and the positioning mechanism on both sides are linearly installed on the upper surface of the fixture base plate. The auxiliary system is used to drive the fixture base plate to move or rotate to adjust the angle and position of the welding fixture. The clamping mechanism includes a clamping cylinder, a first support, a first positioning plate, a clamping arm, a clamping block, and a support block. The clamping cylinder drives the tail end of the clamping arm and drives the clamping block at the front end of the clamping arm to open and close up and down, cooperating with the support block to clamp the weldment. The positioning mechanism includes a positioning cylinder, a second support, a second positioning plate, and a positioning pin. Its welding fixture positioning structure is complex and occupies a relatively large welding space. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a positioning and locking device for automotive prototyping, which simplifies the part positioning structure and frees up operating space for part welding equipment.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is as follows:

[0006] The automotive prototype positioning and locking device includes a base structure, a support positioning structure, a positioning pin structure, and a locking sleeve.

[0007] The base structure is used to support the structure above the base structure;

[0008] The support and positioning structure is fixed on the base structure and is used to support and position the lower body parts;

[0009] The locating pin structure includes a locating pin seat and a locating pin located above the locating pin seat. The locating pin seat is used to support the upper body parts by passing through the lower body parts, and the locating pin is positioned by passing through the locating hole on the upper body parts.

[0010] The locking sleeve and locating pin work together to lock and position the upper body parts.

[0011] Further or preferred:

[0012] The positioning pin is mounted on the base structure.

[0013] The base structure includes a supporting positioning base and a supporting plate disposed on the supporting positioning base; both the supporting positioning structure and the positioning pin structure are disposed on the supporting plate.

[0014] The lower part of the positioning pin seat and the support plate are provided with a set of mating holes, and the fasteners pass through the mating holes to connect.

[0015] The lower end of the positioning pin seat is hinged to the side of the support plate, and a corresponding locking hole is provided between the lower part of the positioning pin seat and the support plate.

[0016] The support positioning structure includes a set of support positioning blocks, with two corresponding support positioning blocks symmetrically arranged on both sides of the support plate and fixed by common fasteners.

[0017] The support positioning block includes an upper support positioning block and a lower support positioning block. Both the upper and lower support positioning blocks are L-shaped support frames, and the upper and lower support positioning blocks are connected in an adjustable position.

[0018] The positioning pin consists of an upper bolt section, a lower smooth rod section, a positioning step, and a lower positioning part, from top to bottom; the outer diameter of the positioning step is larger than the outer diameter of the lower smooth rod section.

[0019] The lower positioning part has a flat-cut positioning surface on its side.

[0020] The locking sleeve includes a cylinder body and a screw handle located on the top of the cylinder body. The interior of the cylinder body consists of two continuous upper and lower parts, with the lower part having a smooth inner wall and the upper part having an internal thread structure.

[0021] Compared with the prior art, the present invention has the following advantages:

[0022] The automotive prototyping positioning and locking device has a reasonable structural design, which simplifies the part positioning structure, frees up the operating space of the part welding equipment, and has high positioning accuracy. It is suitable for the positioning design of complex body prototyping fixture parts, improving production efficiency and employee operation satisfaction. Attached Figure Description

[0023] The following is a brief explanation of the contents of each of the accompanying drawings and the markings in the drawings:

[0024] Figure 1 This is a schematic diagram of the device structure of the present invention.

[0025] Figure 2 This is a schematic diagram showing the positioning of components used in the device of the present invention.

[0026] Figure 3 and Figure 4 This is a schematic diagram showing the locating pin and locking sleeve in conjunction with other components of the present invention.

[0027] Figure 5 This is a schematic diagram of the locating pin and locking sleeve of the present invention.

[0028] In the picture:

[0029] 1. Support positioning base, 2. Support plate, 3. Connecting block, 4. Support positioning block, 5. Positioning pin seat, 6. Positioning pin, 601. Upper threaded section, 602. Lower smooth rod section, 603. Positioning step, 604. Lower positioning part, 605. Flat-cut positioning surface, 7. Locking sleeve, 8. Lower body parts, 9. Upper body parts. Detailed Implementation

[0030] Although the invention has been shown and described herein with reference to specific embodiments, it is not intended to be limited to the details shown. Rather, various modifications in detail may be made within the equivalent scope and scope of the claims without departing from the invention. In the drawings, the same item numbers refer to the same elements.

[0031] Throughout this disclosure, various terms are used to describe the physical shape or arrangement of features. Many of these terms are used to describe features conforming to a cylindrical or generally cylindrical geometry with the feature as its radius and a central axis perpendicular to that radius. Unless otherwise specified, the terms are given the following meanings: The terms “longitudinal,” “longitudinal,” “axial,” and “axial” refer to a direction, dimension, or orientation parallel to the central axis. The terms “radial” and “radially” refer to a direction, dimension, or orientation perpendicular to the central axis. The terms “inward” and “inner” refer to a direction, dimension, or orientation extending radially toward the central axis. The terms “outward” and “outer” refer to a direction, dimension, or orientation extending radially away from the central axis.

[0032] In this specification, relative terms such as “horizontal,” “vertical,” “upward,” “downward,” “top,” and “bottom,” and their derivatives (e.g., “horizontal,” “downward,” “upward,” etc.) should be interpreted as referring to the direction described or the direction shown in the accompanying drawings. These relative terms are for ease of description and are not generally intended to require a specific direction.

[0033] The specific embodiments of the present invention will be further described in detail below with reference to the accompanying drawings and through the description of the examples.

[0034] like Figures 1 to 5As shown, the automotive prototype positioning and locking device includes a base structure, a support positioning structure, a positioning pin structure, and a locking sleeve. The positioning and locking device of this invention positions two body parts, one above the other. This device simplifies the part positioning structure, frees up the operating space of the part welding equipment, and effectively solves the problem of poor weldability of parts on the prototype fixture.

[0035] The base structure is used to support the structure above it; the base structure is fixed on the automobile prototype platform and is a fixed structure, which supports other structures of the locking device.

[0036] The support and positioning structure is fixed on the base structure and is used to support and position the lower body parts; the positioning pin structure includes a positioning pin seat 5 and a positioning pin 6 located above the positioning pin seat. The positioning pin seat is used to support the upper body parts 9 by passing through the lower body parts, and the positioning pin is positioned by passing through the positioning hole on the upper body parts; the locking sleeve and the positioning pin cooperate to lock and position the upper body parts.

[0037] The base structure includes a supporting positioning base 1 and a supporting plate 2 set on the supporting positioning base; both the supporting positioning structure and the positioning pin structure are set on the supporting plate; the supporting positioning base is a corner base; the corner base includes a base plate and a vertical plate, which are welded together, and a connecting reinforcing plate is provided between the base plate and the vertical plate on one side, making the structure reliable; both the base plate and the vertical plate are provided with a set of connecting holes, and the base plate is fixed to the automobile prototype platform by a set of fasteners.

[0038] The positioning pin seat 5 is located on the base structure; the supporting positioning structure and the positioning pin structure are both fixed to the base structure by offset. The supporting positioning structure supports and positions the lower body parts, and the positioning pin structure supports and positions the upper body parts. The integrated positioning structure positions the two body parts that need to be welded together, and the positioning is accurate. In addition, the positioning and locking device has a compact structure, which frees up the operating space of the parts welding equipment.

[0039] The lower part of the locating pin seat and the support plate are provided with a set of mating holes, through which fasteners are connected; the top of the locating pin seat is a bent structure, forming a support surface, thereby reliably supporting the lower body parts; the lower part of the locating pin seat is a vertical rod structure, on which a set of mating holes are provided; by adjusting the fastening position of the mating holes, the height of the locating pin seat can be adjusted, thereby adjusting the support height of the lower body parts.

[0040] Alternatively, the lower end of the locating pin seat is hinged to the side of the support plate, and a corresponding locking hole is provided between the lower part of the locating pin seat and the support plate. According to the actual situation of automobile trial production, when the locating pin seat is required for support, the locating pin seat is flipped upward and fixed by fasteners passing through the locking holes. If the locating pin seat is not required for support, the fasteners in the locking holes are removed, the locating pin seat is flipped downward, and the welding operation space is released.

[0041] The support positioning structure includes a set of support positioning blocks 4, which are fixed to the support plate by connecting blocks 3; two corresponding support positioning blocks are symmetrically arranged on both sides of the support plate and fixed by common fasteners. The structure is compact, occupies little space, and can free up the operating space of the parts welding equipment; and the two corresponding support positioning blocks symmetrically support the lower body parts, providing stable and reliable support.

[0042] The positioning pin structure consists of two sets arranged opposite to each other, with the two positioning pin structures located on both sides of the support plate; both positioning pin structures are located in the middle position, that is, between a set of support positioning blocks; the lower body component 8 has a through hole corresponding to the positioning pin structure, and the top of the positioning pin seat passes through the through hole to support the upper body component, thereby realizing the common support and positioning of the lower body component and the upper body component.

[0043] Furthermore, the support positioning block includes an upper support positioning block and a lower support positioning block. Both the upper and lower support positioning blocks are L-shaped support frames. The upper and lower support positioning blocks are connected in an adjustable position, and the support position can be adjusted according to the size and specifications of the vehicle body parts.

[0044] A pad is installed at the upper end of the upper support positioning block. The pad is made of rubber. The lower body parts are placed on the pad, which is not easy to slip and provides stable and reliable support. The pad has a steel lining inside and has an L-shaped structure. The lower part of the pad is located on the side of the upper support positioning block and is fixed by fasteners.

[0045] like Figure 5 As shown, the positioning pin consists of an upper bolt section 601, a lower smooth rod section 602, a positioning step 603, and a lower positioning part 604 from top to bottom. The lower positioning part is fixed to the positioning pin seat through the cooperation of the upper structure and the locking sleeve. The side of the lower positioning part is provided with a flat positioning surface 605, so the positioning pin will not rotate.

[0046] The outer diameter of the positioning step is larger than the outer diameter of the lower smooth rod section; the locking sleeve 7 includes a cylinder and a screw handle located on the top of the cylinder. The interior of the cylinder consists of two continuous upper and lower parts, with the lower part having a smooth inner wall and the upper part having an internal thread structure.

[0047] The automotive prototyping positioning and locking device of this invention features a reasonable and simple structure, saves space, and offers high positioning accuracy. It is suitable for positioning complex automotive body prototyping fixture parts. This simplifies the part positioning structure, frees up operating space for welding equipment, and improves production efficiency and employee satisfaction.

[0048] A preferred embodiment of the present invention is as follows:

[0049] like Figures 1 to 5 As shown, this automotive prototyping fixture part positioning and locking device includes a body component to be positioned, a locating pin with external threads, and a locking sleeve with internal threads, forming a special part positioning method. The locating pin with external threads is divided into two continuous upper and lower parts. The lower part is a traditional smooth pin used to effectively position the part, while the upper part is an externally threaded bolt structure used to fasten to the corresponding threaded structure. The locking sleeve with internal threads is a special part clamping method; it tightens with the locating pin with external threads to secure the positioned part. The locating pin with external threads and the locking sleeve with internal threads are dimensionally matched, using a clearance fit and tightening method to both position the part and clamp the overlap between the part and the mating part to prevent movement. This device simplifies the part positioning structure, frees up operating space for welding equipment, and is highly suitable for application in the positioning structure of automotive body prototyping fixtures.

[0050] The prototype fixture parts are positioned using a special locating pin. The locating pin body consists of two continuous upper and lower parts. The lower part is a traditional smooth pin used to effectively position the part, while the upper part is an externally threaded bolt structure used to fasten to the corresponding threaded structure. The part clamping structure is a "T"-shaped hand-tightening sleeve. The inner wall of the hand-tightening sleeve is also divided into two continuous upper and lower parts. The lower inner wall is designed with a smooth surface, and the diameter of the hole formed by the inner wall is 0.1mm larger than the diameter of the smooth pin in the lower part of the locating pin, to achieve an effective clearance fit between the sleeve and the locating pin. The upper inner wall is designed with an internal thread structure, and the internal thread specification is consistent with the external thread specification of the upper part of the locating pin. This allows the sleeve to be tightened onto the locating pin. By controlling the lowering distance of the sleeve during tightening, the lower end face of the sleeve is pressed against the positioned part, thereby ensuring a tight fit between the positioned part and the overlapping part below, achieving the purpose of optimizing the part positioning structure and effective positioning.

[0051] The positioning and locking device includes a supporting positioning base 1, a supporting plate 2, a connecting block 3, a supporting positioning block 4, a positioning pin seat 5, a positioning pin 6, and a locking sleeve 7; the locking device provides support and positioning for the lower body parts 8 and the upper body parts 9.

[0052] First, the lower body parts are assembled onto a prototype fixture positioning unit composed of corner seats, templates, connecting blocks, and support blocks (in reality, several such positioning units are needed to effectively position the lower body parts; this invention uses only one positioning unit as an example). Then, connecting blocks, pin seats, and threaded positioning pins are assembled onto the existing positioning unit. Next, the upper body parts are positioned onto the lower body parts using the threaded positioning pins. Finally, the threaded locking sleeve is tightened onto the threaded positioning pins, pressing the upper body parts firmly onto the lower body parts, ensuring a snug fit. At this point, the upper body parts are effectively positioned and pressed. After the two parts are welded, the threaded locking sleeve is unscrewed, and the welded assembly is removed from the fixture, completing one set of operations.

[0053] The above description is merely an illustration of preferred embodiments of the present invention, and the above technical features can be arbitrarily combined to form multiple embodiments of the present invention.

[0054] The present invention has been described above by way of example with reference to the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-described manner. Any non-substantial improvements made using the concept and technical solution of the present invention, or the direct application of the concept and technical solution of the present invention to other occasions without modification, are all within the protection scope of the present invention.

Claims

1. A positioning and locking device for automobile prototypes, characterized in that: include: A base structure, used to support the structure above the base structure; A support and positioning structure is fixed on the base structure and is used to support and position the lower body parts. The locating pin structure includes a locating pin seat and a locating pin disposed above the locating pin seat. The locating pin seat is used to support the upper body component by passing through the lower body component, and the locating pin is positioned by passing through a locating hole on the upper body component. The locking sleeve, together with the locating pin, locks and positions the upper body parts.

2. The automotive test positioning and locking device as described in claim 1, characterized in that: The positioning pin is mounted on the base structure.

3. The automotive test positioning and locking device as described in claim 2, characterized in that: The base structure includes a supporting positioning base and a supporting plate disposed on the supporting positioning base; both the supporting positioning structure and the positioning pin structure are disposed on the supporting plate.

4. The automotive prototyping positioning and locking device as described in claim 3, characterized in that: The lower part of the positioning pin seat and the support plate are provided with a set of mating holes, and the fasteners pass through the mating holes to connect.

5. The automotive test positioning and locking device as described in claim 3, characterized in that: The lower end of the positioning pin seat is hinged to the side of the support plate, and a corresponding locking hole is provided between the lower part of the positioning pin seat and the support plate.

6. The automotive prototyping positioning and locking device as described in claim 3, characterized in that: The support positioning structure includes a set of support positioning blocks, with two corresponding support positioning blocks symmetrically arranged on both sides of the support plate and fixed by common fasteners.

7. The automotive test positioning and locking device as described in claim 6, characterized in that: The support positioning block includes an upper support positioning block and a lower support positioning block. Both the upper and lower support positioning blocks are L-shaped support frames, and the upper and lower support positioning blocks are connected in an adjustable position.

8. The automotive test positioning and locking device as described in claim 1, characterized in that: The positioning pin consists of an upper bolt section, a lower smooth rod section, a positioning step, and a lower positioning part, from top to bottom; the outer diameter of the positioning step is larger than the outer diameter of the lower smooth rod section.

9. The automotive prototyping positioning and locking device as described in claim 8, characterized in that: The lower positioning part has a flat-cut positioning surface on its side.

10. The automotive prototyping positioning and locking device as described in claim 8, characterized in that: The locking sleeve includes a cylinder body and a screw handle located on the top of the cylinder body. The interior of the cylinder body consists of two continuous upper and lower parts, with the lower part having a smooth inner wall and the upper part having an internal thread structure.

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