Detection clamp for multi-curved-surface contour of slender part

Abstract

The utility model belongs to the technical field of part detection, and particularly relates to a long and thin part multi-curved-surface contour detection clamp which comprises a detection table and a handle, the handle is fixedly connected to the middle positions of the left side and the right side of the detection table, supporting columns are fixedly connected to the four corners of the lower side of the detection table, and a workpiece is arranged at the upper end of the detection table. The upper end of the detection table is connected with a clamping mechanism, and the clamping mechanism comprises a clamping unit and an adjusting unit. According to the detection fixture for the multi-curved-surface contour of the slender part, when a workpiece is detected, the workpiece is placed on an angular reference block, a first plane reference, a second plane reference and a third plane reference on a detection table, and then the workpiece is pressed to the angular reference block, the first plane reference, the second plane reference and the third plane reference through a pressing hand; and then a go-no go gauge is used to measure the gap between each contour measuring block and the contour of the workpiece so as to determine whether the contour and position of the product are qualified.

Description

Technical Field

[0001] The utility model relates to the technical field of parts detection, in particular to a detection fixture for multi-curved surface contours of slender parts. Background Art

[0002] The existing measurement technology generally uses three-dimensional coordinates to measure some workpieces with complex contours. For slender forged parts composed of multiple curved contours, the forged parts have a rough appearance and uneven surface. The forging plane datums are located at different points on different curved surfaces. The position size of each point of the workpiece to the datum is controlled by the drawing requirements.

[0003] The deviation of position size will cause the angles between the curved surfaces to deviate and cause distortion, which will cause the shape and position of the workpiece contour to deviate, making it impossible to carry out subsequent processing and scrapping. For forged workpieces with slender parts whose datums are too concentrated and not on the same curved surface, the slight error in the establishment of the datum during three-coordinate measurement will cause a very large error in the measurement of the workpiece, causing the workpiece to be misjudged. In addition, the measurement is highly professional, very cumbersome, and time-consuming, and cannot meet the needs of mass production.

[0004] Therefore, we urgently need to provide a detection fixture for multi-curved contours of slender parts. Utility Model Content

[0005] The utility model aims to provide a detection fixture for the multi-curved contour of a slender part, so as to solve the problems in the above-mentioned background technology that the measurement is highly professional, very complicated, time-consuming and cannot meet the needs of mass production.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a detection fixture for the multi-curved contour of a slender part, comprising a detection platform and a handle, wherein the handle is fixedly connected to the middle position of the left and right sides of the detection platform, and support columns are fixedly connected to the four corners of the lower side of the detection platform. A workpiece is arranged at the upper end of the detection platform, and a clamping mechanism is connected to the upper end of the detection platform, wherein the clamping mechanism comprises a clamping unit and an adjusting unit, wherein the clamping unit is arranged on the upper side of the detection platform, and the adjusting unit is arranged at the lower end of the detection platform.

[0007] The clamping unit includes a contour measuring block 1, an angular reference block, a contour measuring block 2, a pressure hand, a plane reference 1, a plane reference 2, a contour measuring block 3, a center reference A, a measuring slide assembly, a plane reference 3, a contour measuring block 4, a go / no-go gauge and a contour measuring block 5. The contour measuring block 1 is fixedly connected to the upper rear end of the detection table, the angular reference block is fixedly connected to the upper rear end of the detection table in front of the contour measuring block 1, the contour measuring block 2 is fixedly connected to the upper side of the detection table at a position behind the contour measuring block 1, the pressure hand is fixedly connected to the upper side of the detection table, and the plane reference 1 is fixedly connected to the upper side of the detection table. At the middle position, the plane datum 2 is fixedly connected to the upper side of the testing platform at a position to the right of the plane datum 1, the contour measurement block 3 is fixedly connected to the rear right end of the upper side of the plane datum 2, the center datum A is fixedly connected to the right side of the upper front end of the testing platform, the measuring slider assembly is slidably connected to the upper end of the center datum A, the plane datum 3 is fixedly connected to the upper side of the testing platform at a position to the left of the center datum A, the contour measurement block 4 is fixedly connected to the upper side of the testing platform at a position to the left of the plane datum 3, the go / no-go gauge is fixedly connected to the upper side of the testing platform, and the contour measurement block 5 is fixedly connected to the left side of the upper rear end of the testing platform.

[0008] A further improvement is that the arc surface of the workpiece is the same as the curved surfaces of contour measuring block 1, contour measuring block 2, contour measuring block 3, contour measuring block 4 and contour measuring block 5. Therefore, after the workpiece is placed on each contour measuring block, the gap between each contour measuring block and the workpiece contour can be measured by a go / no-go gauge to determine whether the contour and position of the product are qualified.

[0009] A further improvement is that the upper ends of the angular reference block, plane reference 1, plane reference 2 and plane reference 3 abut against the lower end of the workpiece, and the lower end of the pressing hand abuts against the upper end of the workpiece. Thus, after the workpiece is placed on the upper ends of the angular reference block, plane reference 1, plane reference 2 and plane reference 3, the upper end of the workpiece is pressed by the pressing hand, so that the workpiece can be fixed to the upper end of the inspection table.

[0010] A further improvement is that the adjustment unit includes a threaded rod and a support plate, the threaded rod is connected to the inside of the support column, and the support plate is fixedly connected to the lower end of the threaded rod.

[0011] A further improvement is that an inner thread groove is provided on the inner side of the support column, and the outer side of the threaded rod is threadedly connected to the inner side of the inner thread groove, so that when the support plate is rotated to drive the threaded rod in the inner thread groove to rotate, the threaded rod can move relative to the support column.

[0012] A further improvement is that the lower side of the support plate abuts against the upper side of the table top, so that when the fixture is placed on an uneven table top, the distance between the support plate and the test table at the four corners of the lower end of the test table can be adjusted by rotating the support plate, and then the fixture is placed on the uneven table top, so that the test table can remain stable.

[0013] A further improvement is that a non-slip pad is fixedly connected to the lower side of the support plate, so that after the clamp is placed on the desktop, the rubber pad on the lower side of the support plate contacts the desktop, so that the clamp can be supported and fixed more firmly.

[0014] In summary, the present application discloses a detection fixture for multi-curved profiles of slender parts.

[0015] According to the technical solution, after placing the workpiece on the upper ends of the angular reference block, plane reference one, plane reference two and plane reference three, the upper end of the workpiece is pressed by a pressing hand, so that the workpiece can be fixed to the upper end of the inspection table, and then the gap between each contour measuring block and the workpiece contour is measured by a go / no-go gauge to determine whether the contour and position of the product are qualified.

[0016] Furthermore, when the fixture is placed on an uneven tabletop, the support plate is rotated to adjust the distance between the support plate at the four corners of the lower end of the test table and the test table, and then the fixture is placed on the uneven tabletop, so that the test table can remain stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the main structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the upper structure of the detection table of the utility model;

[0019] Figure 3 This is a schematic diagram of the lower end structure of the detection platform of the utility model;

[0020] Figure 4 This is a schematic diagram of the workpiece structure of the utility model.

[0021] In the figure: 1. testing table; 2. handle; 3. support column; 401. contour measuring block one; 402. angular reference block; 403. contour measuring block two; 404. pressing hand; 405. plane reference one; 406. plane reference two; 407. contour measuring block three; 408. center reference A; 409. measuring slide assembly; 410. plane reference three; 411. contour measuring block four; 412. go / no-go gauge; 413. contour measuring block five; 501. threaded rod; 502. support plate; 6. workpiece. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] See also Figure 1-Figure 4 , the utility model provides a technical solution:

[0024] Embodiment 1:

[0025] A detection fixture for multi-curved surface contours of slender parts includes a detection platform 1 and a handle 2, wherein the handle 2 is fixedly connected to the middle position of the left and right sides of the detection platform 1, and support columns 3 are fixedly connected to the four corners of the lower side of the detection platform 1. A workpiece 6 is arranged at the upper end of the detection platform 1, and a clamping mechanism is connected to the upper end of the detection platform 1. The clamping mechanism includes a clamping unit and an adjusting unit. The clamping unit is arranged on the upper side of the detection platform 1, and the adjusting unit is arranged at the lower end of the detection platform 1.

[0026] The clamping unit includes a contour measuring block 1 401, an angular reference block 402, a contour measuring block 2 403, a pressing hand 404, a plane reference 1 405, a plane reference 2 406, a contour measuring block 3 407, a center reference A 408, a measuring slide assembly 409, a plane reference 3 410, a contour measuring block 411, a go / no-go gauge 412 and a contour measuring block 5 413. The contour measuring block 1 401 is fixedly connected to the upper rear end of the detection platform 1, the angular reference block 402 is fixedly connected to the upper rear end of the detection platform 1 in front of the contour measuring block 1 401, the contour measuring block 2 403 is fixedly connected to the upper side of the detection platform 1 at a position behind the contour measuring block 1 401, and the pressing hand 404 is fixedly connected to the upper side of the detection platform 1. Plane datum one 405 is fixedly connected to the middle position of the upper side of the detection platform 1, plane datum two 406 is fixedly connected to the upper side of the detection platform 1 at the right side of plane datum one 405, contour measurement block three 407 is fixedly connected to the rear of the upper right end of plane datum two 406, center datum A408 is fixedly connected to the right side of the upper front end of the detection platform 1, measuring slider assembly 409 is slidably connected to the inner part of the upper end of center datum A408, plane datum three 410 is fixedly connected to the upper side of the detection platform 1 at the left side of center datum A408, the upper ends of angular datum block 402, plane datum one 405, plane datum two 406 and plane datum three 410 abut against the lower end of workpiece 6, and the lower end of pressing hand 404 abuts against the upper end of workpiece 6. Therefore, after the workpiece 6 is placed on the upper ends of the angular reference block 402 , the plane reference one 405 , the plane reference two 406 and the plane reference three 410 , the upper end of the workpiece 6 is pressed by the pressing hand 404 , so that the workpiece 6 can be fixed to the upper end of the inspection table 1 .

[0027] The contour measuring block 411 is fixedly connected to the upper side of the test platform 1 and located to the left of the plane reference 3 410, the go / no-go gauge 412 is fixedly connected to the upper side of the test platform 1, and the contour measuring block 5 413 is fixedly connected to the left of the upper rear end of the test platform 1. The arc surface of the workpiece 6 is the same as the curved surfaces of the contour measuring block 1 401, the contour measuring block 2 403, the contour measuring block 3 407, the contour measuring block 411 and the contour measuring block 5 413. Therefore, after the workpiece 6 is placed on each contour measuring block, the gap between each contour measuring block and the contour of the workpiece 6 can be measured by the go / no-go gauge 412 to determine whether the contour and position of the product are qualified.

[0028] Embodiment 2:

[0029] On the basis of the first embodiment: the adjustment unit includes a threaded rod 501 and a support plate 502, the threaded rod 501 is connected to the inside of the support column 3, and the support plate 502 is fixedly connected to the lower end of the threaded rod 501. An internal thread groove is provided on the inner side of the support column 3, and the outer side of the threaded rod 501 is threadedly connected to the inner side of the internal thread groove. Therefore, when the support plate 502 is rotated to drive the threaded rod 501 located in the internal thread groove to rotate, the threaded rod 501 can be moved relative to the support column 3.

[0030] The lower side of the support plate 502 abuts against the upper side of the tabletop. Therefore, when the fixture is placed on an uneven tabletop, the distance between the support plate 502 and the testing table 1 at the four corners of the lower end of the testing table 1 can be adjusted by rotating the support plate 502, and then the fixture is placed on the uneven tabletop, so that the testing table 1 can remain stable.

[0031] Embodiment three:

[0032] On the basis of the first embodiment: the lower side of the support plate 502 is fixedly connected with an anti-skid pad, so that after the clamp is placed on the desktop, the rubber pad on the lower side of the support plate 502 contacts the desktop, so that the clamp can be supported and fixed more firmly.

[0033] Working principle: When inspecting the workpiece 6, place the workpiece 6 on the angular reference block 402, plane reference one 405, plane reference two 406 and plane reference three 410 on the inspection table 1, then press the workpiece 6 onto the angular reference block 402, plane reference one 405, plane reference two 406 and plane reference three 410 by the pressing hand 404, then use the go / no-go gauge 412 to measure the gap between each contour measurement block and the contour of the workpiece 6 to determine whether the contour and position of the product are qualified.

[0034] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the statement "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

Claims

1. A multi-curved surface contour detection fixture for slender parts, comprising a detection platform (1) and a handle (2), wherein the handle (2) is fixedly connected to the middle position of the left and right sides of the detection platform (1), characterized in that: Support columns (3) are fixedly connected at the four corners of the lower side of the detection platform (1); a workpiece (6) is arranged at the upper end of the detection platform (1); a clamping mechanism is connected to the upper end of the detection platform (1); the clamping mechanism comprises a clamping unit and an adjustment unit; the clamping unit is arranged at the upper side of the detection platform (1); and the adjustment unit is arranged at the lower end of the detection platform (1); The clamping unit comprises a contour measuring block 1 (401), an angular reference block (402), a contour measuring block 2 (403), a pressing hand (404), a plane reference 1 (405), a plane reference 2 (406), a contour measuring block 3 (407), a center reference A (408), a measuring slide assembly (409), a plane reference 3 (410), a contour measuring block 4 (411), a go / no-go gauge (412) and a contour measuring block 5 (413). The contour measuring block 1 (401) is fixedly connected to the upper rear end of the detection platform (1), the angular reference block (402) is fixedly connected to the upper rear end of the detection platform (1) and is located in front of the contour measuring block 1 (401), the contour measuring block 2 (403) is fixedly connected to the upper side of the detection platform (1) and is located behind the contour measuring block 1 (401), the pressing hand (404) is fixedly connected to the upper side of the detection platform (1), and the plane reference 1 (405) is fixedly connected to the upper rear end of the detection platform (1). 5) is fixedly connected to the middle position of the upper side of the detection platform (1), the plane reference 2 (406) is fixedly connected to the position on the upper side of the detection platform (1) to the right of the plane reference 1 (405), the contour measurement block 3 (407) is fixedly connected to the rear of the right end of the upper side of the plane reference 2 (406), the center reference A (408) is fixedly connected to the right of the upper front end of the detection platform (1), the measuring slider assembly (409) is slidably connected to the inner part of the upper end of the center reference A (408), the plane reference 3 (410) is fixedly connected to the position on the upper side of the detection platform (1) to the left of the center reference A (408), the contour measurement block 4 (411) is fixedly connected to the position on the upper side of the detection platform (1) to the left of the plane reference 3 (410), the go / no-go gauge (412) is fixedly connected to the upper side of the detection platform (1), and the contour measurement block 5 (413) is fixedly connected to the left of the upper rear end of the detection platform (1).

2. A multi-curved surface contour detection fixture for slender parts according to claim 1, characterized in that: The arc surface of the workpiece (6) is the same as the surfaces of contour measurement block one (401), contour measurement block two (403), contour measurement block three (407), contour measurement block four (411) and contour measurement block five (413).

3. The multi-curved surface contour detection fixture of a slender part according to claim 1, characterized in that: The upper ends of the angular reference block (402), the plane reference one (405), the plane reference two (406) and the plane reference three (410) abut against the lower end of the workpiece (6), and the lower end of the pressing hand (404) abuts against the upper end of the workpiece (6).

4. The multi-curved surface contour detection fixture of a slender part according to claim 1, characterized in that: The adjustment unit comprises a threaded rod (501) and a support plate (502), wherein the threaded rod (501) is connected to the inside of the support column (3), and the support plate (502) is fixedly connected to the lower end of the threaded rod (501).

5. The multi-curved surface contour detection fixture of a slender part according to claim 4, characterized in that: An internal thread groove is provided on the inner side of the support column (3), and the outer side of the threaded rod (501) is threadedly connected to the inner side of the internal thread groove.

6. The multi-curved surface contour detection fixture of a slender part according to claim 4, characterized in that: The lower side of the support plate (502) abuts against the upper side of the desktop.

7. The multi-curved surface contour detection fixture of a slender part according to claim 4, characterized in that: An anti-slip pad is fixedly connected to the lower side of the support plate (502).

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