Clamp and method for detecting angle and perpendicularity of welded part
By designing a fixture with an L-shaped bracket and an inspection fork, the problems of cumbersome operation and insufficient accuracy in the existing technology for inspecting the angle and perpendicularity of welded parts are solved, achieving a fast, simple and accurate inspection effect.
Patent Information
- Application Number
- CN202511991938.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-26
- Publication Date
- 2026-02-27
AI Technical Summary
Existing technologies for inspecting the angles and perpendicularity of welded parts are cumbersome to operate and their accuracy is greatly affected by the shape and size of the parts, making it difficult to achieve fast and convenient inspection.
A fixture comprising two L-shaped supports and an inspection fork is designed. The fixture can quickly position parts using pins and inspection pins, and use the pins and inspection fork to detect the angle and perpendicularity of the parts, simplifying the operation process and improving the inspection accuracy.
It enables rapid and convenient detection of the angles and perpendicularity of welded parts, improving work efficiency and ensuring the accuracy and operability of the test results.
Smart Images
Figure CN121576886A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application belongs to the field of measurement technology, and relates to a clamp facilitating rapid detection of the qualification of a part, in particular to a clamp and method for detecting the angle and perpendicularity of a part after welding. BACKGROUND
[0002] For detection of the angle and perpendicularity of a part after welding, common measuring tools are angle gauges or three-coordinate measuring machines. First, a reference surface needs to be determined. The angle gauge is used to measure the angle by tightly attaching the ruler body to the measured workpiece. The method is simple, but is limited by the low measuring accuracy of the workpiece. The three-coordinate measuring machine needs to establish a coordinate system and adjust the position of the workpiece so that the reference surface is parallel to the coordinate system of the measuring machine, and then the target element is measured, and data analysis is performed to obtain the angle and perpendicularity of the workpiece. The two methods have high requirements for the machining accuracy of the measured workpiece, and the detection results are greatly affected by the shape and size of the part, and the operability is poor. SUMMARY
[0003] To solve the above technical problems, the present application provides a clamp and method for detecting the angle and perpendicularity of a part after welding, which can simply and effectively detect the angle and perpendicularity of the part after welding. According to the shape and related size requirements of the detected part, the welding quality of the part is strictly guaranteed, and the cumbersome and insufficient conventional detection methods are overcome, thus better solving the problem.
[0004] The technical solution of the present application is as follows: A clamp for detecting the angle and perpendicularity of a part after welding comprises two identical L-shaped supports, which are fixed on a base in an overlapping and spaced manner. The space between the two L-shaped supports is used to place the part to be detected. The top of the L-shaped support is provided with an inner circular arc matched with the rotating shaft of the part. The vertical part of the L-shaped support is provided with a first insertion hole in the middle. After a plug is inserted into a second insertion hole, it passes through the hole of the short end of the part to be detected. The end of the horizontal part of the L-shaped support is provided with a second insertion hole. After the plug is inserted into the second insertion hole, it is tangent to the long end of the part to be detected.
[0005] Further, the clamp further comprises a testing fork seat fixed on the base, the testing fork seat extends into the horizontal part between the two L-shaped supports, and the top of the testing fork seat is provided with a testing clamping opening. The width and parallelism of the testing clamping opening are such that when the long end of the part to be detected is perpendicular to the rotating shaft, the long end of the part to be detected can pass through the testing clamping opening.
[0006] Further, one of the L-shaped supports is a movable support, and the other is a fixed support.
[0007] Further, the movable support adjusts the relative position of the part to be detected by radial movement of the guide pin, and after the position is determined, the movable support is fixed on the base by tightening the nut.
[0008] Further, the fixed support is fixed on the base by the cylindrical pin and the screw, and the center axes of the positioning circles of the inner arcs at the top of the fixed support and the movable support coincide.
[0009] A method for detecting the angle and perpendicularity of a welded part, using the aforementioned clamp for detecting the angle and perpendicularity of a welded part, comprises the following steps: S1, the part to be detected is placed on the inner arc of the clamp by the rotating shaft, and the short end of the part to be detected is placed between the vertical parts of the two L-shaped supports, and the long end of the part to be detected is directed towards the horizontal parts of the two L-shaped supports; S2, adjust the relative position of the two L-shaped supports, and then fix the two L-shaped supports; S3, the angle of the part to be detected is detected by the plug pin and the test plug pin, and the perpendicularity of the part to be detected is detected by the test fork seat.
[0010] Further, in S3, the method for detecting the angle of the part to be detected by the plug pin and the test plug pin is as follows: fix the position of the part to be detected, insert the plug pin, and fix the short end of the part to be detected between the vertical parts of the two L-shaped supports, at this time, the test plug pin is inserted into the end of the horizontal part of the L-shaped support, if the test plug pin is tangent to the bottom of the long end of the part to be detected, then the angle between the short end and the long end of the part to be detected is qualified, if the test plug pin cannot be inserted, then the angle between the short end and the long end of the part to be detected is too small and unqualified, if there is a visible gap between the test plug pin and the bottom of the long end of the part to be detected after the test plug pin is inserted, then the angle between the short end and the long end of the part to be detected is too large and unqualified.
[0011] Further, in S3, the method for detecting the perpendicularity of the part to be detected by the test fork seat is as follows: rotate the part to be detected, if the long end of the part to be detected does not interfere with the test fork seat, then the perpendicularity of the long end of the part to be detected and the rotating shaft is qualified, otherwise the perpendicularity of the long end of the part to be detected and the rotating shaft is unqualified.
[0012] The beneficial effects of the present application are as follows: 1, the clamp of the present application can quickly position and align the measured part, the plug pin is used for positioning the part, and the test plug pin is used for detecting whether the angle of the part is qualified; when checking the perpendicularity, pull out the two plug pins, rotate the rocker arm along the rotating shaft of the part, and observe whether the part can smoothly pass through the inner groove H of the test fork seat, if yes, the perpendicularity requirement is qualified, otherwise it is unqualified.
[0013] 2. The technical scheme of the application realizes fast clamping, simple operation, accurate angle and perpendicularity detection, and greatly improves work efficiency. BRIEF DESCRIPTION OF DRAWINGS
[0014] In order to more clearly illustrate the technical scheme in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced as follows. The drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor on the basis of these drawings.
[0015] Figure 1 Fig. 1 is a structural schematic view of a special fixture for detecting the angle and perpendicularity of a welded part according to the present application.
[0016] Figure 2 Fig. 2 is an A-A sectional view of the special fixture for detecting the angle and perpendicularity of a welded part according to the present application. Figure 1
[0017] Figure 3 Fig. 3 is a left view of the special fixture for detecting the angle and perpendicularity of a welded part according to the present application. Figure 1
[0018] Figure 4 Fig. 4 is an axonometric schematic view of a special fixture for detecting the angle and perpendicularity of a welded part according to the present application.
[0019] Figure 5 Fig. 5 is a schematic view of a part to be detected.
[0020] In the figure: 1 - base, 2 - movable support, 3 - nut, 4 - guide pin, 5 - set screw, 6 - fixed support, 7 - inspection bolt, 8 - bolt, 9 - inspection fork seat. DETAILED DESCRIPTION
[0021] In order to make the purpose, technical scheme and advantages of the embodiments of the present application more clear, the technical scheme in the embodiments of the present application will be clearly and completely described below in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are some embodiments of the present application, not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.
[0022] The features and exemplary embodiments of the various aspects of the present application will be described in detail below with reference to the figures. In the following detailed description, numerous specific details are set forth in order to provide a thorough understanding of the present application. However, it will be apparent to one of ordinary skill in the art that the present application can be practiced without some or all of these specific details. In other instances, well known structures and functions have not been described in detail in order to not unnecessarily obscure the present application. The following detailed description is merely illustrative of the present application and is not intended to limit the present application from all aspects.
[0023] In the description of the present application, it should be noted that the directions or positional relationships belonging to "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like are the directions or positional relationships described based on the drawings, and are merely for the convenience of describing the present application and simplifying the description, and cannot be understood as limiting the present application. In addition, the ordinal numbers (for example, "first" and "second") are used to distinguish objects, and are not limited to the order, and cannot be understood as indicating or implying relative importance.
[0024] In the description of the present application, it should be noted that, unless otherwise explicitly specified and limited, "mounting", "connecting", "connecting" should be understood in a broad sense, which can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.
[0025] It should be noted that, in the case of no conflict, the embodiments of the present application and the features in the embodiments can be combined with each other, and each embodiment can be mutually referred to and quoted. The present application will be described in detail below with reference to the drawings and in combination with the embodiments.
[0026] Embodiment 1: A kind of detects the angle and perpendicularity clamp of part after welding, including two identical L-shaped supports, two L-shaped supports are coincident and interval fixed on base 1, the interval between two L-shaped supports is used to place the part to be detected;The top of L-shaped support is equipped with the inner arc that is matched with the shaft of part, the vertical portion of L-shaped support is equipped with the first jack in the middle, after the insertion of second jack, it is inserted through the hole of the short end of the part to be detected;The end of the horizontal portion of L-shaped support is equipped with the second jack, after the insertion of inspection pin 7, it is tangent with the long end of the part to be detected.
[0027] Also included is a test fork seat 9, which is fixed on the base 1, the top of the test fork seat 9 extends into the horizontal part between the two L-shaped supports, and the top of the test fork seat 9 is provided with a test clamping opening, the width and parallelism of the test clamping opening are such that: when the long end of the part to be detected is perpendicular to the shaft, the long end of the part to be detected can just pass through the test clamping opening.
[0028] One of the L-shaped supports is a movable support 2, and the other is a fixed support 6.
[0029] The movable support 2 is adjusted by radial movement of the guide pin 4 to adjust the relative position of the part to be detected, and after the position is determined, the nut 3 is tightened to fix the movable support 2 on the base 1.
[0030] The fixed support 6 is fixed on the base 1 by a cylindrical pin and a screw, and the center axis of the positioning circle 2-φd of the inner arc at the top of the fixed support 6 and the movable support 2 coincides.
[0031] A method for detecting the angle and perpendicularity of a welded part, using the aforementioned fixture for detecting the angle and perpendicularity of a welded part, comprising the following steps: S1, placing the part to be detected in the fixture in a way that the short end of the part to be detected is placed between the vertical parts of the two L-shaped supports, and the long end of the part to be detected is directed towards the horizontal parts of the two L-shaped supports; S2, adjusting the relative position of the two L-shaped supports, and then fixing the two L-shaped supports; S3, detecting the angle of the part to be detected using the plug pin and the test plug pin, and detecting the perpendicularity of the part to be detected using the test fork seat.
[0032] In S3, the method for detecting the angle of the part to be detected using the plug pin and the test plug pin is as follows: fix the position of the part to be detected, insert the plug pin, and fix the short end of the part to be detected between the vertical parts of the two L-shaped supports, at this time, insert the test plug pin at the end of the horizontal part of the L-shaped support, if the test plug pin just touches the bottom of the long end of the part to be detected, then the angle between the short end and the long end of the part to be detected is qualified; if the test plug pin cannot be inserted, then the angle between the short end and the long end of the part to be detected is too small and unqualified; if there is a visible gap between the test plug pin and the bottom of the long end of the part to be detected after the test plug pin is inserted, then the angle between the short end and the long end of the part to be detected is too large and unqualified.
[0033] In S3, the method for detecting the perpendicularity of the part to be detected by the detection fork seat is specifically: rotating the part to be detected, if the long end of the part to be detected does not interfere with the detection fork seat, the welding perpendicularity of the long end of the part to be detected and the rotating shaft is qualified, otherwise the welding perpendicularity of the long end of the part to be detected and the rotating shaft is unqualified.
[0034] Embodiment 2: The present application is realized by the following technical solutions.
[0035] As shown in Figure 1 , Figure 2 , Figure 3 A special fixture for detecting the angle and perpendicularity of a welded part, comprising a base 1, a guide pin 4, a movable support 2, a fixed support 6, a detection pin 7, and a detection fork seat 9.
[0036] The guide pin 4 is fixed on the base by a clamping screw 5.
[0037] The movable support 2 is adjusted in position by radial movement of the guide pin 4, and after the position is determined, the nut 3 is tightened to fix it on the base 1.
[0038] The fixed support 6 is fixed on the base 1 by a cylindrical pin and a screw, and the center axes of the two positioning circles 2-φd are coincident.
[0039] The detection pin 8 is used to position the part to be detected, and the detection pin 7 is inserted into the support and tangent to the part to check whether the welding angle of the part is qualified.
[0040] The detection fork seat 9 is fixed on the base 1 by a cylindrical pin and a screw.
[0041] The guide pin 4 is fixed on the base by a clamping screw 5.
[0042] In actual use, a special fixture for detecting the angle and perpendicularity of a welded part is adopted, as shown in Figure 4 The working principle is as follows: The part is placed on the fixture, the relative positions of the movable support 2 and the fixed support 6 are adjusted to ensure convenient use by the operator, and then the nut 3 is tightened to fix the movable support 2 to prevent loosening.
[0043] I. When detecting the angle of the part, the detection pin 8 is inserted to position the part, and then the detection pin 7 is inserted to observe whether the rocker arm of the part is tangent to the detection pin 7, and if so, the angle parameter requirement is met, otherwise it is unqualified.
[0044] II. Pull out the above two pins, and rotate the rocker along the part rotation shaft to make it pass through the groove in the test fork seat 9. If it passes smoothly, it meets the perpendicularity requirement, otherwise it is unqualified.
[0045] The above detailed description is a detailed description of the present application, which cannot be considered as limiting the specific embodiments of the present application to these descriptions. For ordinary skilled persons in the technical field to which the present application belongs, several simple deductions and substitutions can be made without departing from the concept of the present application, which should be considered as belonging to the protection scope of the present application.
Claims
1. A fixture for detecting the angle and perpendicularity of welded parts, characterized in that, It includes two identical L-shaped brackets, which are fixed to the base (1) with overlapping intervals. The interval between the two L-shaped brackets is used to place the part to be inspected. The top of the L-shaped bracket is provided with an inner arc that matches the pivot of the part. The middle of the vertical part of the L-shaped bracket is provided with a first insertion hole. After the pin (8) is inserted into the second insertion hole, it passes through the hole at the short end of the part to be inspected. The end of the horizontal part of the L-shaped bracket is provided with a second insertion hole. After the inspection pin (7) is inserted into the second insertion hole, it is tangent to the long end of the part to be inspected.
2. A fixture for detecting the angle and perpendicularity of welded parts according to claim 1, characterized in that, It also includes an inspection fork (9), which is fixed on the base (1). The top of the inspection fork (9) extends between the transverse portions of the two L-shaped brackets. The top of the inspection fork (9) is provided with an inspection clamp. The width and parallelism of the inspection clamp are such that when the long end of the part to be inspected is perpendicular to the rotating shaft, the long end of the part to be inspected can pass through the inspection clamp.
3. A fixture for detecting the angle and perpendicularity of welded parts according to claim 1, characterized in that, One of the L-shaped supports is a movable support (2), and the other L-shaped support is a fixed support (6).
4. A fixture for detecting the angle and perpendicularity of welded parts according to claim 3, characterized in that, The movable bracket (2) adjusts the relative position of the part to be tested by radial movement of the guide pin (4). After the position is determined, tighten the nut (3) to fix the movable bracket (2) on the base (1).
5. A fixture for detecting the angle and perpendicularity of welded parts according to claim 3, characterized in that, The fixed bracket (6) is fixed to the base (1) by cylindrical pins and screws, and the central axis of the positioning circle (2-φd) of the inner arc at the top of the fixed bracket (6) and the movable bracket (2) coincides.
6. A method for detecting the angle and perpendicularity of a welded part, using a fixture for detecting the angle and perpendicularity of a welded part as described in any one of claims 1-5, characterized in that, Includes the following steps: S1, the part to be inspected is placed on the inner arc of the fixture by means of a rotating shaft. The short end of the part to be inspected is placed downward between the vertical parts of the two L-shaped brackets, and the long end of the part to be inspected is placed towards the horizontal part of the two L-shaped brackets. S2, adjust the relative positions of the two L-shaped brackets, and then fix the two L-shaped brackets; S3 uses a pin and an inspection pin to check the angle of the part to be inspected, and uses an inspection fork to check the perpendicularity of the part to be inspected.
7. The method for detecting the angle and perpendicularity of welded parts according to claim 6, characterized in that, In S3, the method of using a pin and a test pin to test the angle of the part to be tested is as follows: fix the position of the part to be tested, insert the pin, fix the short end of the part to be tested between the vertical parts of the two L-shaped brackets, and then insert the test pin at the end of the horizontal part of the L-shaped bracket. If the test pin is exactly tangent to the bottom of the long end of the part to be tested, then the angle between the short end and the long end of the part to be tested is qualified. If the inspection pin cannot be inserted, the angle between the short end and the long end of the part to be inspected is too small and therefore unqualified; if, after inserting the inspection pin, there is a visible gap between the inspection pin and the bottom of the long end of the part to be inspected, the angle between the short end and the long end of the part to be inspected is too large and therefore unqualified.
8. A method for detecting the angle and perpendicularity of welded parts according to claim 6, characterized in that, In S3, the method for testing the perpendicularity of the part to be tested using the inspection fork is as follows: rotate the part to be tested. If there is no interference or collision between the long end of the part to be tested and the inspection fork, then the perpendicularity of the welding between the long end of the part to be tested and the rotating shaft is qualified; otherwise, the perpendicularity of the welding between the long end of the part to be tested and the rotating shaft is unqualified.