A switchable gauge positioning assembly

Abstract

The utility model discloses a kind of switchable gauge positioning assembly, belong to automobile gauge technical field, including step limiting sleeve, adjusting lever, locating block, handle ball and spring.Locating block is fixed in adjusting lever one end, adjusting lever is inserted into step limiting sleeve and extends to outside.Step limiting sleeve has recess, locating block bottom is equipped with lug, lug is matched with recess, first positioning height is formed when lug is embedded recess, after rotation and recess two side walls contact and form second positioning height.Handle ball is fixed in adjusting lever end, spring is sleeved in adjusting lever, ensure that locating block and step limiting sleeve stable contact.Step limiting sleeve is T-shaped, connect with gauge base through lower part.The utility model structure is simple, convenient to operate, low in cost, small, can quickly realize positioning height switching, meet the detection demand of different state of automobile welding assembly parts.

Description

Technical Field

[0001] This utility model belongs to the field of automotive inspection tool technology, specifically relating to a switchable inspection tool positioning component, which is suitable for positioning and inspection of automotive welded assembly parts under different conditions. Background Technology

[0002] With the rapid development of the automotive industry, the precision requirements of automobile manufacturing are constantly increasing. Especially in the production process of welded automotive assembly parts, dimensional inspection is a crucial step in ensuring product quality. Before and after welding, the dimensional accuracy of automotive welded assembly parts under different conditions needs to be evaluated to ensure that the parts meet design requirements. To achieve precise positioning, positioning components are usually required in the fixtures to match the positioning positions of different parts. Traditional positioning methods often use fixed positioning blocks, requiring the design and manufacture of multiple independent fixtures for different parts or different conditions. This approach not only increases hardware costs and occupies a large amount of storage space, but also leads to low inspection efficiency due to frequent fixture changes during production, making it difficult to meet the production needs of modern automobile manufacturing, which involves small batches, multiple varieties, and high flexibility.

[0003] To address the aforementioned issues, flexible fixture technology is gradually becoming a trend in the industry. Flexible fixtures, through their modular and reconfigurable structural design, enable a single fixture to adapt to the inspection needs of various parts or in various states, thereby improving fixture utilization and inspection efficiency while reducing manufacturing costs and space requirements. In existing flexible fixture designs, the positioning component is the core component for achieving multi-functional inspection. Its design is crucial in ensuring repeatability and system rigidity stability when switching positioning states. Common positioning components typically achieve the replacement or adjustment of positioning blocks through flanges, slots, or quick-clamping mechanisms. For example, some fixtures use quick-change positioning blocks, fixed in the reference hole seat by clips or bolts, but this method requires frequent disassembly and installation of positioning blocks by the operator, making the operation complex and time-consuming. Furthermore, to ensure high precision, some positioning components introduce complex quick-change mechanisms, such as hydraulically or pneumatically driven clamping devices, but these mechanisms significantly increase the manufacturing cost and maintenance difficulty of the fixture, making it difficult to achieve a balance between cost and performance.

[0004] In recent years, some improved positioning component designs have attempted to achieve rapid switching through mechanical structures. For example, some designs employ sliding or rotating mechanisms to adapt to different parts by adjusting the position of the positioning block. However, these designs often suffer from structural complexity and large space requirements. Especially under high-precision requirements, the repeatability of sliding or rotating mechanisms is difficult to guarantee, and positioning deviations are easily caused by wear or loosening. In addition, some positioning components provide positioning force through springs or elastic elements, but lack stable limiting structures, making it difficult to ensure reliable contact and rigid support of the positioning block under different conditions. Some designs achieve positioning height adjustment through multi-level limiting structures, but these usually require additional locking devices, increasing operational steps and structural complexity.

[0005] To address the aforementioned issues, there is an urgent market demand for a component that is simple in structure, easy to operate, low in cost, and capable of achieving high-precision positioning. Existing positioning components suffer from the following shortcomings in practical applications: First, switching positioning states is complex and time-consuming, impacting inspection efficiency; second, high-precision quick-change mechanisms are costly, hindering widespread application in small and medium-sized production scenarios; third, the repeatability of some components is insufficient, failing to meet high-precision inspection requirements; and fourth, existing designs occupy significant space, making integration in limited workstation spaces impractical. Therefore, designing a component capable of rapid and reliable positioning switching on a single fixture substrate has become a crucial research direction in the field of automotive fixture technology. An ideal positioning component should possess the following characteristics: compact structure, simple operation, low cost, and the ability to achieve high-precision positioning switching through a simple mechanical structure, while ensuring stability and repeatability across different positioning states. Utility Model Content

[0006] In view of this, the purpose of this utility model is to solve the above problems and provide a switchable inspection fixture positioning component that can achieve two positioning surfaces of different heights through the cooperation of grooves and protrusions, so as to meet the positioning and inspection needs of automotive welded assembly parts under different conditions.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] A switchable gauge positioning assembly includes a stepped limiting sleeve, an adjusting rod, and a positioning block. The positioning block is fixedly mounted on one end of the adjusting rod, and the other end of the adjusting rod is inserted into the stepped limiting sleeve and extends to the outside of the stepped limiting sleeve. By operating the adjusting rod, the positioning block can be moved axially and circumferentially. The stepped limiting sleeve has a groove, the upper part of the positioning block is a positioning surface, and the bottom has a protrusion. The protrusion matches the groove. When the protrusion is in the groove, the bottom of the protrusion contacts the bottom of the groove, forming a first positioning height. When the protrusion rotates, the bottom of the protrusion contacts the screens on both sides of the groove, forming a second positioning height.

[0009] Preferably, the end of the adjusting rod away from the positioning block is provided with a handle ball, which is fixed to the end of the adjusting rod for easy operation of the adjusting rod.

[0010] Preferably, a spring is provided between the handle ball and the step limiting sleeve; the spring is fitted onto the adjusting rod, with one end of the spring abutting against the handle ball and the other end abutting against the step limiting sleeve, so that the positioning block and the step limiting sleeve are always in stable contact under the action of the spring.

[0011] Preferably, the step limiting sleeve has an inner cavity structure that matches the shape of the adjusting rod, and is used to guide the adjusting rod to move up and down and rotate.

[0012] Preferably, the positioning block is provided with a threaded hole, and the positioning block is connected to the adjusting rod by a thread.

[0013] Preferably, the handle ball is connected to the adjusting rod via a thread or a fixing pin.

[0014] Preferably, the step limiting sleeve is T-shaped, and the step limiting sleeve is connected to the gauge base through the lower part of the T-shape.

[0015] The beneficial effects of this utility model are as follows:

[0016] Firstly, this invention achieves rapid switching between two different positioning heights through the cooperative design of the groove in the stepped limiting sleeve and the protrusion at the bottom of the positioning block. The concave structure of the stepped limiting sleeve includes a bottom surface and two side walls. The bottom surface has a groove. When the protrusion of the positioning block is embedded in the groove, the bottom of the protrusion contacts the bottom of the groove, forming the first positioning height. When the adjusting rod rotates the positioning block by a certain angle (e.g., 90°), the protrusion deviates from the groove and contacts the side walls of the groove, forming the second positioning height. This structural design cleverly utilizes the geometric matching of the groove and the protrusion, allowing for switching of positioning heights through a simple rotation operation without disassembling or replacing the positioning block. It is easy to operate and has a compact structure. This design significantly simplifies the positioning switching steps, reduces operation time, and is particularly suitable for the rapid inspection needs of automotive welded assembly parts before and after welding.

[0017] Secondly, this invention features a simple structure and low manufacturing cost. The positioning assembly consists of only a few parts, including a stepped limiting sleeve, an adjusting rod, a positioning block, a handle ball, and a spring. The processing technology for each component is relatively simple, eliminating the need for complex hydraulic or pneumatic drive mechanisms. The stepped limiting sleeve adopts a T-shaped structure and connects to the fixture base via a fixed flange, ensuring stable installation and ease of manufacturing. The positioning block and adjusting rod are connected by threads, a mature and reliable connection method with low processing costs. The handle ball and spring further simplify operation and reduce maintenance difficulty. Compared to traditional quick-change mechanisms or multiple independent fixtures, this invention significantly reduces hardware costs and is suitable for widespread application in small and medium-sized production scenarios.

[0018] Furthermore, this invention enhances the stability and repeatability of positioning by incorporating a spring. The spring is fitted onto the adjusting rod, with one end abutting against the handle ball and the other end against the stepped limiting sleeve, ensuring stable contact between the positioning block and the stepped limiting sleeve. Whether the protrusion is within the groove or in contact with the side walls of the groove, the elastic force provided by the spring effectively prevents the positioning block from loosening or shifting, thus guaranteeing the repeatability of the positioning surface. This design is particularly important in high-precision inspection scenarios, effectively meeting the stringent requirements for dimensional inspection of automotive parts.

[0019] Finally, this invention occupies little space and is highly adaptable. The T-shaped design and compact component layout of the stepped limiting sleeve allow for integration within limited workstation space, reducing the storage and usage space requirements of inspection fixtures. Simultaneously, through the axial movement and circumferential rotation of the adjusting rod, the positioning block can flexibly adapt to the positioning requirements of different parts, suitable for inspection scenarios in various states or design versions. This high adaptability enables this invention to meet the trend of small-batch, multi-variety production in modern automobile manufacturing, improving the utilization rate of inspection fixtures.

[0020] Other advantages, objectives, and features of this invention will be set forth in part in the description which follows, and in part will be apparent to those skilled in the art from the following examination and study, or may be learned from practice of this invention. The objectives and other advantages of this invention can be realized and obtained through the following description. Attached Figure Description

[0021] To make the objectives, technical solutions, and advantages of this utility model clearer, the preferred embodiments of this utility model will be described in detail below with reference to the accompanying drawings, wherein:

[0022] Figure 1 This is a schematic diagram of the switchable inspection fixture positioning component in this utility model.

[0023] Figure 2 for Figure 1 Exploded view.

[0024] Figure 3 This is a schematic diagram showing the fixture positioning component at the first positioning height.

[0025] Figure 4 This is a schematic diagram showing the fixture positioning component at the second positioning height.

[0026] Reference numerals in the attached drawings: 1-positioning block; 2-step limiting sleeve; 3-adjusting rod; 4-spring; 5-handle ball; 6-protrusion; 7-groove. Detailed Implementation

[0027] The following specific examples illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. This utility model can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this utility model. It should be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of this utility model. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0028] The accompanying drawings are for illustrative purposes only and are schematic diagrams, not actual pictures. They should not be construed as limiting the present invention. To better illustrate the embodiments of the present invention, some parts in the drawings may be omitted, enlarged, or reduced, and do not represent the actual product dimensions. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings.

[0029] In the accompanying drawings of this utility model, the same or similar reference numerals correspond to the same or similar components. In the description of this utility model, it should be understood that if terms such as "upper," "lower," "left," "right," "front," and "rear" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting this utility model. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0030] Please see Figures 1-4This is a switchable fixture positioning assembly, comprising a positioning block 1, a stepped limiting sleeve 2, an adjusting rod 3, a spring 4, and a handle ball 5. The positioning block 1 is fixedly mounted on one end of the adjusting rod 3, and the other end of the adjusting rod 3 is inserted into the inner cavity of the stepped limiting sleeve 2 and extends to the outside of the stepped limiting sleeve 2. The stepped limiting sleeve 2 is T-shaped, with a fixing flange at its lower part for connection to the fixture base. The inner cavity structure of the stepped limiting sleeve 2 matches the outer shape of the adjusting rod 3, guiding the adjusting rod 3 to move axially and rotate circumferentially.

[0031] like Figure 2 As shown, the upper part of the positioning block 1 is a positioning surface, and the bottom is provided with a protrusion 6. The stepped limiting sleeve 2 is provided with a groove 7, and the protrusion 6 matches the shape of the groove 7. The positioning block 1 is threadedly connected to the adjusting rod 3 through a threaded hole to ensure that the two are fixedly connected. The handle ball 5 is fixed to the end of the adjusting rod 3 away from the positioning block 1 by threads or a fixing pin for easy operation. The spring 4 is a compression spring, which is fitted on the adjusting rod 3. One end of the spring abuts against the handle ball 5, and the other end abuts against the stepped limiting sleeve 2 to ensure that the positioning block 1 and the stepped limiting sleeve 2 always maintain stable contact.

[0032] like Figure 3 As shown, when the protrusion 6 is embedded in the groove 7, the bottom of the protrusion 6 contacts the bottom of the groove 7, forming a first positioning height, which is suitable for positioning detection of specific parts. Figure 4 As shown, when the adjusting rod 3 is operated by the handle ball 5 to rotate the positioning block 1 by a certain angle (e.g., 90°), the protrusion 6 deviates from the groove 7, and the bottom of the protrusion 6 contacts the two side walls of the groove 7 to form a second positioning height, which can be adapted to the positioning requirements of different parts.

[0033] During assembly, first fix the positioning block 1 to one end of the adjusting rod 3 via a threaded connection. Insert the adjusting rod 3 into the inner cavity of the step limiting sleeve 2, and then fit the spring 4 onto the adjusting rod 3. Next, fix the handle ball 5 to the other end of the adjusting rod 3, ensuring that the spring 4 is located between the handle ball 5 and the step limiting sleeve 2. The step limiting sleeve 2 is connected to the fixture base via the fixing flange at the lower part of the T-shape, completing the installation of the positioning assembly.

[0034] This embodiment achieves rapid switching of positioning block 1 between two positioning heights through a simple mechanical structure. It has a compact structure, is easy to assemble, and is suitable for efficient inspection of automotive welded assembly parts under different conditions.

[0035] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of this technical solution, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A switchable gauge positioning assembly, characterized in that, It includes a step limiting sleeve, an adjusting rod, and a positioning block; the positioning block is fixedly disposed at one end of the adjusting rod, and the other end of the adjusting rod is inserted into the step limiting sleeve and extends to the outside of the step limiting sleeve. By operating the adjusting rod, the positioning block can be moved axially and circumferentially. The step limiting sleeve is provided with a groove, the upper part of the positioning block is a positioning surface, and the bottom is provided with a protrusion. The protrusion matches the groove. When the protrusion is in the groove, the bottom of the protrusion contacts the bottom of the groove to form a first positioning height. When the protrusion rotates, the bottom of the protrusion contacts the screens on both sides of the groove to form a second positioning height.

2. The switchable gauge positioning assembly according to claim 1, characterized in that, The end of the adjusting rod away from the positioning block is provided with a handle ball, which is fixed to the end of the adjusting rod for easy operation.

3. The switchable gauge positioning assembly according to claim 2, characterized in that, A spring is provided between the handle ball and the step limiting sleeve; the spring is fitted onto the adjusting rod, with one end of the spring abutting against the handle ball and the other end abutting against the step limiting sleeve. Under the action of the spring, the positioning block and the step limiting sleeve are always in stable contact.

4. The switchable gauge positioning assembly according to claim 1, characterized in that, The stepped limiting sleeve has an inner cavity structure that matches the shape of the adjusting rod, and is used to guide the adjusting rod to move up and down and rotate.

5. The switchable gauge positioning assembly according to claim 1, characterized in that, The positioning block is provided with a threaded hole, and the positioning block is connected to the adjusting rod by a thread.

6. The switchable gauge positioning assembly according to claim 2, characterized in that, The handle ball is connected to the adjusting rod via threads or a fixing pin.

7. The switchable gauge positioning assembly according to claim 1, characterized in that, The step limiting sleeve is T-shaped, and the step limiting sleeve is connected to the gauge base through the lower part of the T-shape.

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