High-precision forge piece profile tolerance testing fixture

Abstract

The utility model belongs to the technical field of machining, and particularly relates to a high-precision forge piece profile tolerance gauge which comprises a positioning base body, a workpiece positioning structure installed in the middle of the top face of the positioning base body, clamping structures arranged on the top and the back face of the workpiece positioning structure, and profile modeling structures arranged on the front face and the back face of the workpiece positioning structure. The workpiece positioning structure comprises a three-axis orientation unit and a profiling contour unit, the three-axis orientation unit comprises an X-direction V-shaped elastic positioning block, a Z-direction V-shaped positioning block is arranged on the front face of the right side of the X-direction V-shaped elastic positioning block, and a Y-direction positioning face is installed in the middle of the top face of the X-direction V-shaped elastic positioning block. According to the high-precision forge piece profile tolerance gauge, whether the profile and the position of a product are qualified or not is judged by measuring the gap between the profile measuring block and the profile of the finished product through the go-no go gauge. And the original complicated measurement becomes simple and easy to operate. No professional measuring personnel is needed, and a trained operator can measure.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical processing, in particular to a high-precision forging profile inspection tool. Background Art

[0002] Existing measurement technology generally uses three-coordinate measurement for workpieces with complex contours in multiple dimensions. For the product shown in Figure 1, there are four curved surface contours that need to be measured. The contour tolerance of the workpiece, 0.3AB, is controlled by the drawing requirements. The shape and position deviation of the contour will cause the eccentricity of the subsequent processing steps and the asymmetry of the machining allowance, thereby increasing the scrap rate of the workpiece processing. Since the datum A and B and the outer contour are all forged, and they are all arc surface contours, the particularity of the forging makes the size of the workpiece vary greatly. The change in the datum makes the selection of the measurement point for the three-coordinate measurement particularly important. The establishment of the datum is the difference in the measuring points, which will seriously affect the final measurement result of the workpiece by the three-coordinate measurement. This causes inaccurate measurement of the workpiece contour, which leads to misjudgment of the product, and such a measurement method is time-consuming and not suitable for mass production needs. Utility Model Content

[0003] The purpose of the utility model is to provide a high-precision forging profile gauge to solve the particularity of forgings mentioned in the above background technology, which makes the size of the workpiece vary greatly. The change of the benchmark makes the selection of the measuring point of the three-coordinate particularly important. The establishment of the benchmark is the difference in the measuring points, which will seriously affect the final measurement result of the workpiece by the three-coordinate. It causes inaccurate measurement of the workpiece contour, thereby causing misjudgment of the product, and such a measurement method is time-consuming and not suitable for large-scale production needs.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a high-precision forging contour gauge, comprising a positioning base, a workpiece positioning structure is installed in the middle of the top surface of the positioning base, a clamping structure is arranged on the top and back of the workpiece positioning structure, and a contour-copying structure is arranged on the front and back of the workpiece positioning structure.

[0005] The workpiece positioning structure includes a three-axis orientation unit and a contour profiling unit.

[0006] The three-axis orientation unit comprises an X-direction V-shaped elastic positioning block, a Z-direction V-shaped positioning block is arranged on the right front side of the X-direction V-shaped elastic positioning block, and a Y-direction positioning surface is installed in the middle of the top surface of the X-direction V-shaped elastic positioning block.

[0007] Preferably, the profiling contour unit comprises a fixed profiling contour block, and the bottom of the fixed profiling contour block is connected to the top surface of the positioning base.

[0008] Preferably, the bottom surface of the Z-direction V-shaped block positioning block is connected to the top surface of the positioning base, and the bottom surface of the Y-direction positioning surface is connected to the top surface of the positioning base. The fixed profiling contour block abuts against the surface of the workpiece.

[0009] Preferably, the clamping structure includes a V-shaped pressing plate, a workpiece is arranged on the front side of the V-shaped pressing plate, and a pressing hand is arranged on the right side of the workpiece.

[0010] Preferably, the front of the V-shaped pressing plate is connected to the outer surface of the workpiece, and the pressing hand is installed at the right end of the middle part of the top surface of the positioning base. The workpiece is positioned by the X-axis V-shaped elastic positioning block, the Z-axis V-shaped block positioning block, and the Y-axis positioning surface, and is clamped and fixed by the V-shaped pressing plate and the pressing hand.

[0011] Preferably, the contour structure includes a slide rail, a movable contour block is connected to one end of the front surface of the outer surface of the slide rail, a go / no-go gauge is provided in the middle of the front surface of the movable contour block, and a slide rail limit pin is connected to the top surface of the slide rail.

[0012] Preferably, the bottom surface of the slide rail is fixedly connected to the middle of the top surface of the positioning base, and a circular hole groove is provided on the top surface of the slide rail, and the inside of the circular hole groove is clamped with the bottom end of the slide rail limit pin. The movable contour block abuts against the back of the outer surface of the workpiece, and the bottom of the go / no-go gauge is connected to the middle of the top surface of the positioning base near the front end.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] 1. This high-precision forging profile gauge, the workpiece is installed on the gauge through the reference, the slide rail device is pushed to push the active contour measuring block into place, and fixed with the slide rail limit pin. The gap between the contour measuring block and the finished product contour is measured by the go / no-go gauge to determine whether the contour and position of the product are qualified. This makes the original complex measurement simple and easy to operate. No professional measurement personnel are required, and only trained operators can measure.

[0015] 2. The high-precision forging profile gauge, clamping device and multi-curved profile detection slider device. The positioning base includes a workpiece positioning device, a Z-direction V-block positioning block; an X-direction V-shaped elastic positioning block and a Y-direction positioning surface; and a fixed profile block. The clamping device is provided with a V-shaped pressure plate. This allows the workpiece to be accurately placed on the gauge. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 The product drawings of the utility model;

[0017] Figure 2 This is a structural diagram of the inspection fixture of the present utility model.

[0018] In the figure: 1. X-axis V-shaped elastic positioning block; 2. workpiece; 3. V-shaped pressure plate; 4. Z-axis V-shaped block positioning block; 5. slide rail limit pin; 6. slide rail; 7. movable contour block; 8. pressure hand; 9. fixed contour block; 10. go / no-go gauge; 11. Y-axis positioning surface. DETAILED DESCRIPTION

[0019] 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.

[0020] See also Figure 1-Figure 2 The utility model provides a technical solution: a high-precision forging contour gauge, including a positioning base, a workpiece positioning structure is installed in the middle of the top surface of the positioning base, a clamping structure is arranged on the top and back of the workpiece positioning structure, and a contour-copying structure is arranged on the front and back of the workpiece positioning structure.

[0021] The workpiece positioning structure includes a three-axis orientation unit and a profiling unit. The three-axis orientation unit includes an X-direction V-shaped elastic positioning block 1. A Z-direction V-shaped positioning block 4 is arranged on the right front of the X-direction V-shaped elastic positioning block 1. A Y-direction positioning surface 11 is installed in the middle of the top surface of the X-direction V-shaped elastic positioning block 1. The profiling unit includes a fixed profiling block 9, and the bottom of the fixed profiling block 9 is connected to the top surface of the positioning base.

[0022] The bottom surface of the Z-direction V-shaped block positioning block 4 is connected to the top surface of the positioning base, and the bottom surface of the Y-direction positioning surface 11 is connected to the top surface of the positioning base.

[0023] The clamping structure includes a V-shaped pressing plate 3, a workpiece 2 is arranged on the front of the V-shaped pressing plate 3, and a pressing hand 8 is arranged on the right side of the workpiece 2. The front of the V-shaped pressing plate 3 is connected to the outer surface of the workpiece 2, and the pressing hand 8 is installed at the right end of the middle part of the top surface of the positioning base.

[0024] The profiling structure includes a slide rail 6, a movable profiling block 7 is connected to one end of the front surface of the outer surface of the slide rail 6, a go / no-go gauge 10 is provided in the middle of the front surface of the movable profiling block 7, and a slide rail stop pin 5 is connected to the top surface of the slide rail 6. The bottom surface of the slide rail 6 is fixedly connected to the middle of the top surface of the positioning base, and a circular hole groove is provided on the top surface of the slide rail 6, and the inside of the circular hole groove is clamped with the bottom end of the slide rail stop pin 5.

[0025] The workpiece is mounted on the inspection fixture through the reference, and the slide rail 6 device is pushed to push the active profiling contour block 7 into place and fixed with the slide rail limit pin 5. The clearance between the active profiling contour block 7 and the contour of the workpiece 2 is measured by the go / no-go gauge 10 to determine whether the contour and position of the product are qualified. This makes the originally complicated measurement simple and easy to operate. No professional measurement personnel are required, and only trained operators can measure. Clamping device and multi-curved surface profiling contour detection slider device. The positioning base includes a workpiece 2 positioning device, which is provided with a Z-direction V-block positioning block 4; an X-direction V-shaped elastic positioning block 1 and a Y-direction positioning surface 11; and a fixed profiling contour block 9. The clamping device is provided with a V-shaped pressure plate 3. In this way, the workpiece 2 can be accurately placed on the inspection fixture.

[0026] Use this test fixture to test Figure 1 When workpiece 2 is being tested, just install the outer circle of B into the Z-direction V-block positioning block 4; align the outer circle of A with the X-direction V-shaped elastic positioning block 1; the C surface is against the Y-direction positioning surface 11, and the pressing hand 8 presses and fixes the workpiece 2 through the V-shaped pressing plate 3; push the slide rail 6 to push the movable profiling contour block 7 to the standard position; insert the slide rail limit pin 5 into the limit hole; use the go / no-go gauge 10 with a tolerance of 0.3 to measure the gap between the workpiece 2 and the fixed profiling contour block 9 and the movable profiling contour block 7, and the workpiece 2 is qualified if it passes the go / no-go gauge 10.

[0027] 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 high-precision forging profile gauge, comprising a positioning base, characterized in that: A workpiece positioning structure is installed in the middle of the top surface of the positioning base, a clamping structure is arranged on the top and back of the workpiece positioning structure, and a contouring structure is arranged on the front and back of the workpiece positioning structure; The workpiece positioning structure includes a three-axis orientation unit and a contour profiling unit; The three-axis orientation unit comprises an X-direction V-shaped elastic positioning block (1), a Z-direction V-shaped positioning block (4) is arranged on the right front side of the X-direction V-shaped elastic positioning block (1), and a Y-direction positioning surface (11) is installed in the middle of the top surface of the X-direction V-shaped elastic positioning block (1).

2. The high-precision forging profile gauge according to claim 1, characterized in that: The profiling contour unit comprises a fixed profiling contour block (9), the bottom of the fixed profiling contour block (9) being connected to the top surface of the positioning base.

3. The high-precision forging profile gauge according to claim 1, characterized in that: The bottom surface of the Z-direction V-shaped block positioning block (4) is connected to the top surface of the positioning base, and the bottom surface of the Y-direction positioning surface (11) is connected to the top surface of the positioning base.

4. The high-precision forging profile gauge according to claim 1, characterized in that: The clamping structure comprises a V-shaped pressing plate (3), a workpiece (2) is arranged on the front side of the V-shaped pressing plate (3), and a pressing hand (8) is arranged on the right side of the workpiece (2).

5. The high-precision forging profile gauge according to claim 4, characterized in that: The front face of the V-shaped pressing plate (3) is connected to the outer surface of the workpiece (2), and the pressing hand (8) is installed at the right end of the middle part of the top surface of the positioning base.

6. The high-precision forging profile gauge according to claim 1, characterized in that: The contour-copying structure comprises a slide rail (6), one end of the front surface of the outer surface of the slide rail (6) is connected to a movable contour-copying block (7), a go / no-go gauge (10) is arranged in the middle of the front surface of the movable contour-copying block (7), and the top surface of the slide rail (6) is connected to a slide rail limit pin (5).

7. The high-precision forging profile gauge according to claim 6, characterized in that: The bottom surface of the slide rail (6) is fixedly connected to the middle of the top surface of the positioning base. The top surface of the slide rail (6) is provided with a circular hole groove, and the inside of the circular hole groove is clamped with the bottom end of the slide rail limit pin (5).

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