V-shaped profile tolerance testing fixture
By designing a V-shaped profile gauge with multi-directional positioning, the problem of complex inspection when using a coordinate measuring machine to inspect V-shaped workpieces was solved, achieving efficient and accurate inspection of workpieces, adapting to different workpiece shapes, and improving production efficiency and equipment reliability.
Patent Information
- Application Number
- CN202520085082.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-15
- Publication Date
- 2025-11-28
- Estimated Expiration
- 2035-01-15
AI Technical Summary
The process of inspecting V-shaped workpieces with a coordinate measuring machine is complicated, time-consuming, and labor-intensive, requiring multiple adjustments and tooling fabrication, which slows down the inspection rate.
Design a V-shaped profile gauge, including a base plate, vertical, horizontal and lateral positioning units. Multi-directional positioning is achieved through components such as cylinder brackets, cylinders, sliding plates, positioning rods, fixed blocks, spring blocks, handles, reference blocks, and guide blocks. Combined with automated and manual adjustment, it ensures the stability and accuracy of the workpiece during the inspection process.
It achieves precise positioning of workpieces in all directions, improves the accuracy and efficiency of inspection, reduces the number of adjustments, adapts to workpieces of different sizes and shapes, and improves production efficiency and equipment reliability.
Smart Images
Figure CN223610758U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a V-shaped profile gauge belongs to the field of gauge. BACKGROUND
[0002] In the conventional workpiece detection process, three-coordinate measuring instrument as a commonly used detection means is widely used in the accurate measurement of workpiece profile. However, for the specific workpiece with "V" shape structure, due to the inherent limitation of three-coordinate measuring instrument in measuring such complex geometric shape, the detection process is more complicated and time-consuming, and multiple fixed toolings need to be made during detection, and the direction needs to be adjusted multiple times, the detection rate is greatly slowed down, and the detection is also increased due to the step of making tooling. SUMMARY
[0003] In order to overcome the defects of the prior art, the utility model provides a V-shaped profile gauge, and the technical scheme of the utility model is:
[0004] A V-shaped profile gauge, comprising a bottom plate, a vertical positioning unit, a horizontal positioning unit and a lateral positioning unit, a gauge handle is installed on both sides of the bottom plate, and the two gauge handles are symmetrically arranged along the bottom plate; the vertical positioning unit and the lateral positioning unit are installed on one side of the upper part of the bottom plate, and the horizontal positioning unit is installed on the other side of the upper part of the bottom plate, the horizontal positioning unit is arranged opposite to the vertical positioning unit, and the horizontal positioning unit is used for positioning the measured part in the horizontal direction; the vertical positioning unit is used for positioning the measured part in the vertical direction; and the lateral positioning unit is used for positioning the measured part in the lateral direction.
[0005] The vertical positioning unit comprises a cylinder bracket, a cylinder, a sliding plate, a positioning rod and a guide plate, the cylinder bracket is installed on the bottom plate, the guide plate is arranged in the horizontal direction on the top of the cylinder bracket, and a guide hole for the positioning rod to pass through is arranged on the guide plate; the cylinder is arranged in the vertical direction and is installed on one side of the cylinder bracket, the sliding plate is installed on the telescopic rod of the cylinder and moves up and down with the lifting of the telescopic rod; one end of the positioning rod is installed on the sliding plate, and the other end extends to the measured part after passing through the guide hole.
[0006] The transverse positioning unit comprises fixed blocks, spring blocks, handles, reference blocks, guide blocks and cover plates, the two fixed blocks are oppositely arranged and form a spacing, the cover plates are installed on the top of the two fixed blocks, the spring blocks are installed on one side of the two fixed blocks, one end of the handle is installed with the reference block after penetrating through the spring block, and the reference block is in dynamic cooperation with the spring installed on the spring block; the reference block is guided through the two guide blocks installed on the bottom plate.
[0007] The lateral positioning unit comprises a bracket, a front plate, a rear plate and a top rod, the front plate is installed on the front of the bracket, the rear plate is installed on the rear of the bracket, the top rod is arranged in the horizontal direction and penetrates through the rear plate and the front plate, and the front end of the top rod extends to the measured part; the top rod slides on the front plate and the rear plate through the push rod.
[0008] A gauge clamp is also installed on the bottom plate.
[0009] The utility model discloses the advantages are:
[0010] Multi-directional positioning ensures detection accuracy: by setting the positioning unit in three directions of horizontal, vertical and lateral, the measured part can be positioned accurately in all directions. This can effectively limit the degree of freedom of the part, prevent it from moving or deflecting during detection, and ensure the accuracy and reliability of the detection results. For example, in the detection of automobile parts, this multi-directional positioning method can ensure that the parts are completely aligned with the reference surface of the gauge during detection, avoiding misjudgment caused by inaccurate positioning.
[0011] Improve detection efficiency: compared with the traditional single-direction positioning method, this multi-directional positioning gauge can complete positioning in multiple directions at a time, reducing the number of adjustments of the part during detection. For example, in mass production, this gauge can quickly position and detect the parts, greatly improving production efficiency. BRIEF DESCRIPTION OF DRAWINGS
[0012] Figure 1 It is the main structure schematic diagram of the utility model. DETAILED DESCRIPTION
[0013] The advantages and characteristics of the utility model will be more clear with the description. However, these examples are only exemplary and do not constitute any limitation on the scope of the utility model. Those skilled in the art should understand that the details and forms of the technical solutions of the utility model can be modified or replaced without deviating from the spirit and scope of the utility model, and these modifications and replacements all fall within the protection scope of the utility model.
[0014] Referring toFigure 1 The utility model relates to a kind of V profile gauge, including bottom plate 1, vertical positioning unit, transverse positioning unit and lateral positioning unit, one gauge handle 13 is respectively installed in the both sides of the bottom plate 1, two gauge handles 13 are symmetrically set along the bottom plate 1;Vertical positioning unit and lateral positioning unit are installed on the one side of the upper portion of this bottom plate 1, transverse positioning unit is installed on the other side of the upper portion of this bottom plate 1, the transverse positioning unit is oppositely arranged with the vertical positioning unit, and the transverse positioning unit is used for the positioning of measured part in transverse direction;The vertical positioning unit is used for the positioning of measured part in vertical direction;The lateral positioning unit is used for the positioning of measured part in lateral direction.
[0015] High positioning accuracy: through the positioning unit in three directions of transverse, vertical and lateral, the measured part can be positioned accurately in all directions. This multi-direction positioning method can effectively limit the degree of freedom of the part, prevent it from moving or deflecting during detection, and thus ensure the accuracy and reliability of the detection results.
[0016] Improved detection efficiency: compared with the traditional single-direction positioning method, this multi-direction positioning gauge can complete positioning in multiple directions at a time, reducing the number of adjustments of the part during detection. For example, in mass production, the use of this gauge can quickly position and detect the part, greatly improving production efficiency.
[0017] Strong structural stability: the gauge handles symmetrically arranged on both sides of the bottom plate make the entire gauge more stable during use.
[0018] The vertical positioning unit includes a cylinder bracket, a cylinder 8, a sliding plate 9, a positioning rod 18, and a guide plate 3. The cylinder bracket is installed on the bottom plate 1. The guide plate 3 is installed on the top of the cylinder bracket in the horizontal direction. The guide hole for the positioning rod 18 to pass through is arranged on the guide plate 3. The cylinder 8 is arranged in the vertical direction and installed on one side of the cylinder bracket. The sliding plate 9 is installed on the telescopic rod of the cylinder 8 and moves up and down with the lifting of the telescopic rod. One end of the positioning rod 18 is installed on the sliding plate 9, and the other end extends to the measured part after passing through the guide hole.
[0019] The structure of the vertical positioning unit has the following advantages:
[0020] High degree of automation: the telescopic rod of the cylinder drives the sliding plate to move up and down, and then the positioning rod realizes vertical positioning. The entire process does not require manual intervention and can automatically complete the vertical positioning of the part. For example, in an automated production line, this structure can be used in cooperation with a mechanical hand and other equipment to realize automatic feeding, positioning, and detection of the part, improving production efficiency.
[0021] Controllable positioning accuracy: The extension and retraction accuracy of the air cylinder is high, and the moving distance of the sliding plate can be accurately controlled by adjusting the pressure and extension and retraction speed of the air cylinder, thereby ensuring the positioning accuracy of the positioning rod in the vertical direction. In addition, the guide holes on the guide plate can guide the movement of the positioning rod, further improving the accuracy of positioning.
[0022] The lateral positioning unit comprises two fixed blocks 14, a spring block 11, a handle 16, a reference block 4, guide blocks 5 and a cover plate 15. The two fixed blocks 14 are oppositely arranged with a certain distance, and the cover plate 15 is installed on the top of the two fixed blocks 14. The spring block 11 is installed on one side of the two fixed blocks 14. One end of the handle 16 passes through the spring block 11 and is installed with the reference block 4. The reference block 4 is in dynamic cooperation with the spring installed in the spring block 11. The reference block 4 is guided by the two guide blocks 5 installed on the bottom plate 1.
[0023] The structure of the lateral positioning unit has the following advantages:
[0024] High positioning accuracy: The cooperation of the fixed block and the spring block allows accurate lateral positioning of the measured part. The elastic design of the spring block allows a certain adjustment range to adapt to parts of different sizes, while ensuring the stability of positioning.
[0025] Easy to operate: The design of the handle allows the operator to easily pull the reference block for positioning, while the cover plate protects the internal positioning mechanism from dust and impurities, thereby improving the reliability and service life of the equipment.
[0026] Strong adaptability: The guide blocks provide stable guidance for the movement of the reference block, allowing it to move along a predetermined trajectory, adapting to parts of different shapes and sizes.
[0027] The lateral positioning unit comprises a bracket 17, a front plate 20, a rear plate 18 and a top rod 21. The front plate 20 is installed on the front of the bracket 17, and the rear plate 18 is installed on the rear of the bracket 17. The top rod 21 is arranged in the horizontal direction and penetrates through the rear plate 18 and the front plate 20. The front end of the top rod 21 extends to the measured part. The top rod 21 slides on the front plate 20 and the rear plate 18 through a push rod.
[0028] The structure of the lateral positioning unit has the following advantages:
[0029] High positioning accuracy: The design of the top rod allows accurate lateral positioning of the measured part, ensuring the accuracy of the position of the part in the lateral direction. The horizontal arrangement of the top rod allows it to stably contact the part, reducing positioning errors.
[0030] Flexible operation: the top rod slides on the front plate and the rear plate through the toggle lever, so that the operator can conveniently adjust the position of the top rod to adapt to parts of different sizes and shapes. This flexible adjustment mode improves the application range of the gauge.
[0031] Simple structure: the structure of the entire lateral positioning unit is relatively simple, consisting of a bracket, a front plate, a rear plate and a top rod, which is easy to manufacture and maintain. The simple structure also helps to reduce production costs and improve the reliability of the equipment.
[0032] A gauge clamp 27 is also installed on the bottom plate.
[0033] The working principle of the utility model is:
[0034] Workpiece placement: place the workpiece in an upright state on the bottom plate below the positioning rod of the vertical positioning unit. At this time, the bottom of the workpiece is in contact with the bottom plate, ensuring its initial position stable.
[0035] Vertical positioning: turn on the pneumatic switch, and the extension rod of the air cylinder drives the sliding plate to move up and down, thereby realizing vertical positioning of the positioning rod. The front end of the positioning rod passes through the guide hole in the guide plate and extends to the workpiece, preliminarily supporting and positioning the workpiece, effectively preventing the workpiece from vertically moving.
[0036] Lateral positioning: push the top rod of the lateral positioning unit to make it closely contact the side surface of the workpiece. The top rod slides on the front plate and the rear plate through the toggle lever to adapt to the lateral position of the workpiece, ensuring the accurate position of the workpiece in the lateral direction.
[0037] Horizontal positioning: adjust the handle of the horizontal positioning unit, and the displacement of the handle drives the reference block to move. The reference block cooperates with the spring of the spring block to move along the track of the guide block until the top rod is accurately inserted into the pre-designed recess hole in the side edge of the reference block. At this time, the horizontal position of the workpiece is firmly fixed, ensuring that it remains stable during the detection process.
[0038] Detection operation: take out the gauge in the gauge clamp and place it between the workpiece and the reference block for reciprocating detection operation. The gauge includes a go gauge and a no-go gauge, the go gauge is used to detect the minimum size of the workpiece, and the no-go gauge is used to detect the maximum size of the workpiece.
[0039] When the go gauge can smoothly pass through the gap between the workpiece and the reference block, and the no-go gauge cannot pass through, it indicates that the size of the workpiece is within the specified tolerance range, meeting the corresponding quality standard.
[0040] If abnormal conditions such as the go gauge cannot pass or the no-go gauge can also pass occur, the workpiece is determined to be unqualified product.
[0041] In summary, the utility model has the following advantages:
[0042] Multi-directional cooperative positioning: through the cooperative work of vertical, horizontal and lateral positioning units, the full-range accurate positioning of the workpiece is realized. This multi-directional positioning method effectively limits the degrees of freedom of the workpiece, prevents it from moving or deflecting during detection, and thus ensures the accuracy and reliability of the detection results.
[0043] Combination of automation and manual adjustment: the pneumatic system of the vertical positioning unit realizes automatic positioning, improving the detection efficiency; while the horizontal and lateral positioning units are adjusted manually, enhancing the flexibility and adaptability of the equipment, so that it can adapt to workpieces of different sizes and shapes.
[0044] Gauge detection and judgment: the size of the workpiece is detected by the passing and stopping of the gauge, and whether the workpiece meets the quality standard is judged by the passing condition of the gauge. This method is simple, intuitive and easy to operate, and can quickly and accurately determine the quality of the workpiece.
[0045] The above is only the preferred specific implementation of the present application, but the protection scope of the present application is not limited to this. Any skilled person in the art, according to the technical scheme and the inventive concept of the present application, within the technical range disclosed by the present application, makes equivalent replacement or change, should be covered within the protection scope of the present application.
Claims
1. A V-profile gauge, comprising: The utility model discloses a measuring fixture, including bottom plate, vertical positioning unit, horizontal positioning unit and lateral positioning unit, and one measuring fixture handle is installed on both sides of the bottom plate respectively, and two measuring fixture handles are symmetrically arranged along the bottom plate, the vertical positioning unit and lateral positioning unit are installed on one side of the upper portion of the bottom plate, and the horizontal positioning unit is installed on the other side of the upper portion of the bottom plate, the horizontal positioning unit is arranged opposite to the vertical positioning unit, and the horizontal positioning unit is used for the positioning of the measured part in the horizontal direction, the vertical positioning unit is used for the positioning of the measured part in the vertical direction, and the lateral positioning unit is used for the positioning of the measured part in the lateral direction.
2. A V-profile gauge as claimed in claim 1, wherein, The vertical positioning unit includes a cylinder support, a cylinder, a sliding plate, a positioning rod and a guide plate, the cylinder support is installed on the bottom plate, the guide plate is arranged in the horizontal direction on the top of the cylinder support, and a guide hole for the positioning rod to pass through is arranged on the guide plate, the cylinder is arranged in the vertical direction and is installed on one side of the cylinder support, the sliding plate is installed on the telescopic rod of the cylinder and moves up and down along with the lifting of the telescopic rod, one end of the positioning rod is installed on the sliding plate, and the other end extends to the measured part after passing through the guide hole.
3. A V-profile gauge according to claim 1 or 2, c h a r a c t e r i s e d in that The horizontal positioning unit includes fixed blocks, spring blocks, handles, reference blocks, guide blocks and cover plates, two fixed blocks are arranged opposite to each other and form a spacing, the cover plates are installed on the top of the two fixed blocks, the spring blocks are installed on one side of the two fixed blocks, one end of the handle passes through the spring block and is provided with the reference block, the reference block is matched with the spring installed on the spring block, and the reference block is guided through the two guide blocks installed on the bottom plate.
4. A V-profile gauge as claimed in claim 3, wherein, The lateral positioning unit includes a support, a front plate, a rear plate and a top rod, the front plate is installed on the front of the support, the rear plate is installed on the rear of the support, the top rod is arranged in the horizontal direction and penetrates the rear plate and the front plate, and the front end of the top rod extends to the measured part, and the top rod slides on the front plate and the rear plate through the push rod.
5. A V-profile gauge as claimed in claim 4, wherein, A gauge clamp is also installed on the bottom plate.