Measuring tool for arc of feeding rocker arm

Abstract

The utility model discloses an arc measuring tool for a feed rocker arm, which comprises a bottom plate and a feed rocker arm body, and the inner wall of the feed rocker arm body is provided with a vertically through mounting hole. According to the utility model, the feeding rocker arm body is slidably connected to the bottom plate through the second positioning pin and the third positioning pin, and then the turntable provided with the fan-shaped plate is arranged on the outer wall of the first positioning pin, so that whether the second arc surface is qualified or not is judged by judging whether the first arc surface on the fan-shaped plate interferes with the second arc surface of the feeding rocker arm body or not when the turntable is rotated; the clearance fit between the feeding rocker arm body and the second positioning pin and the clearance fit between the feeding rocker arm body and the third positioning pin facilitate the disassembly and assembly between the feeding rocker arm body and the bottom plate, and the clearance fit between the turntable and the first positioning pin facilitates the free rotation of the turntable, so that the measuring tool is very convenient to use, and the detection efficiency is greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of measuring tooling, in particular to a feed rocker arm arc measuring tool. Background Art

[0002] like Figure 4 The feed rocker arm product shown is provided with a mounting hole and a groove on the outer wall, and the inner wall of the groove is provided with an arc surface. The groove is 7mm wide. During processing, a φ200 blade is used for rough processing on a milling machine, and then a caliper is used for fine processing to obtain an arc surface with a size of R100 in the groove. Its main function is to provide a gap when the feed rocker arm is connected to the equipment and rotates. When this product is processed in batches, the potential failure mode is the loosening of the positioning pin used for positioning and the wear of the tool. When the positioning pin is loose, the processed product will have an R100 position deviation, and the tool wear R100 The dimensions will change. The solution is to regularly check the positioning pins during processing to eliminate looseness and replace the tools regularly. In addition to regular inspections and regular tool changes, the dimensions of the product also need to be measured. The commonly used measurement method is to use an megohmmeter to measure the position from the two intersections of the R100 arc surface and the feed rocker arm shape to the center of the mounting hole to confirm whether the dimensions are qualified. The megohmmeter measurement is very slow, resulting in low detection efficiency and affecting the overall production efficiency. It is necessary to optimize and improve the arc surface side device of the feed rocker arm product to simplify the measurement method and improve the measurement efficiency. Utility Model Content

[0003] The purpose of the utility model is to solve the shortcomings in the prior art and to propose a feed rocker arm arc measuring tool.

[0004] In order to achieve the above-mentioned purpose, the present invention adopts the following technical solutions: a feed rocker arm arc measuring tool, comprising a base plate and a feed rocker arm body, the inner wall of the feed rocker arm body is provided with a mounting hole which is through-going up and down, the front wall of the feed rocker arm body is sequentially provided with a first support arm and a second support arm in an upper and lower distribution, a groove is formed between the opposite sides of the first support arm and the second support arm, the inner walls of the first support arm and the second support arm and the end located away from the feed rocker arm body are both provided with a connecting hole which is through-going up and down, and the axis center lines of the two groups of connecting holes are collinear, a second arc surface is provided inside the groove and on the side close to the mounting hole, a first pin hole, a third pin hole and a second pin hole are sequentially distributed on the upper wall of the base plate from front to back, and the axis center line of the second arc surface is aligned with the axis center line of the first pin hole The cam is connected to the upper end of the base plate by a threaded hole, and the threaded hole is connected to the bottom plate by a threaded hole. The cam is connected to the lower end of the base plate by a threaded hole. The cam is connected to the lower end of the base plate by a threaded hole.

[0005] As a further description of the above technical solution: the detection surface is a first arc surface, the first arc surface is arranged at the end of the sector plate away from the turntable, the axis of the first arc surface is collinear with the axis of the first pin hole, and the arc radius of the first arc surface is adapted to the second arc surface.

[0006] As a further description of the above technical solution: the first pin hole, the second pin hole and the third pin hole are completed by one clamping process, and the center of the third pin hole under the top projection of the first pin hole, the second pin hole and the third pin hole is located on the line between the center of the first pin hole and the center of the second pin hole.

[0007] As a further description of the above technical solution: the fitting clearances between the fitting hole and the first positioning pin, between the mounting hole and the second positioning pin, and between the connecting hole and the third positioning pin are all 0.03 mm.

[0008] As a further description of the above technical solution: the horizontal height of the fan-shaped plate under the front projection is located between the lower wall of the first arm and the upper wall of the second arm, and the gap between the upper wall of the fan-shaped plate and the first arm and between the lower wall of the fan-shaped plate and the upper wall of the second arm are both 0.1 mm.

[0009] As a further description of the above technical solution: the height of the third positioning pin extending to the upper side of the bottom plate is less than the vertical distance between the upper wall of the second support arm and the lower wall of the second support arm.

[0010] The utility model has the following beneficial effects:

[0011] Compared with the existing technology, the feed rocker arm arc measuring tool connects the feed rocker arm body to the base plate through the second positioning pin and the third positioning pin, and then installs the turntable provided with a fan-shaped plate on the outer wall of the first positioning pin. The qualification of the second arc surface is judged by whether the first arc surface on the fan-shaped plate interferes with the second arc surface of the feed rocker arm body when the turntable is rotated. The clearance between the feed rocker arm body and the second positioning pin and the third positioning pin facilitates the disassembly and installation between the feed rocker arm body and the base plate, and the clearance between the turntable and the first positioning pin facilitates the free rotation of the turntable, making the measuring tool very convenient to use and greatly improving the detection efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic diagram of the overall structure of the feed rocker arm arc measuring tool proposed by the utility model;

[0013] Figure 2 This is a schematic diagram of the connection structure of the base plate, first locating pin, second locating pin and third locating pin of the feed rocker arm circular arc measuring tool proposed by the present invention;

[0014] Figure 3 This is a schematic diagram of the bottom plate structure of the feed rocker arm arc measuring tool proposed in the utility model;

[0015] Figure 4 This is a schematic diagram of the feed rocker arm body structure of the feed rocker arm arc measuring tool proposed in the present invention;

[0016] Figure 5 This is a schematic upward view of the turntable and fan-shaped plate connection structure of the feed rocker arm arc measuring tool proposed by the present invention.

[0017] Legend:

[0018] 1. Base plate; 2. First pin hole; 3. Second pin hole; 4. Third pin hole; 5. First positioning pin; 6. Second positioning pin; 7. Third positioning pin; 8. Turntable; 9. Fan-shaped plate; 10. First arc surface; 11. Feed rocker arm body; 12. First support arm; 13. Second support arm; 14. Groove; 15. Matching hole; 16. Mounting hole; 17. Connecting hole; 18. Second arc surface. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0020] Reference Figures 1 to 5 The feed rocker arm arc measuring tool provided by the present invention comprises a base plate 1 and a feed rocker arm body 11. The inner wall of the feed rocker arm body 11 is provided with a mounting hole 16 which passes through the upper and lower parts. The front wall of the feed rocker arm body 11 is provided with a first arm 12 and a second arm 13 which are distributed in sequence in the upper and lower parts. A groove 14 is formed between the opposite sides of the first arm 12 and the second arm 13. The inner walls of the first arm 12 and the second arm 13 are provided with a connecting hole 17 which passes through the upper and lower parts and the ends which are located away from the feed rocker arm body 11. The axis center lines of the two groups of connecting holes 17 are collinear. A second arc surface 18 is provided inside the groove 14 and on the side close to the mounting hole 16.

[0021] like Figure 3 As shown, in order to improve the accuracy of the measuring tool, the upper wall of the base plate 1 is sequentially distributed with the first pin hole 2, the third pin hole 4 and the second pin hole 3 from front to back, the axis line of the second arc surface 18 is collinear with the axis line of the first pin hole 2, the first pin hole 2, the second pin hole 3 and the third pin hole 4 are completed by one-time clamping processing, the center of the third pin hole 4 is located on the line connecting the center of the first pin hole 2 and the center of the second pin hole 3 when the first pin hole 2, the second pin hole 3 and the third pin hole are projected from above, the inner side walls of the first pin hole 2, the second pin hole 3 and the third pin hole 4 are fixedly connected with the first positioning pin 5, the second positioning pin 6 and the third positioning pin 7 respectively, the upper ends of the first positioning pin 5, the second positioning pin 6 and the third positioning pin 7 all pass through the upper wall of the base plate 1 and extend to the upper side of the base plate 1, the first pin hole 2, the second pin hole 3 and the third pin hole 4 are completed by one-time clamping processing, which can greatly improve the position accuracy between each other, thereby improving the accuracy of the measuring tool;

[0022] like Figure 1 and Figure 5As shown, in order to detect the first arc surface 10 on the feed rocker arm body 11, the first locating pin 5 extends to the outer wall of one end of the upper side of the bottom plate 1 and is rotatably connected to the turntable 8 through the matching hole 15. The outer wall of the circumference of the turntable 8 is provided with a fan-shaped plate 9. The end of the fan-shaped plate 9 away from the turntable 8 is provided with a detection surface for detecting the second arc surface 18. The detection surface is the first arc surface 10. The first arc surface 10 is provided at the end of the fan-shaped plate 9 away from the turntable 8. The axis of the first arc surface 10 is collinear with the axis of the first pin hole 2. The arc radius of the first arc surface 10 is adapted to the second arc surface 18. The size of the first arc surface 10 can be processed according to the principle of the through gauge and the size requirements of the second arc surface 18. During the inspection, the first arc surface 10 completely passes through the groove 14 through the rotation of the turntable 8 and does not contact the second arc surface 18. It can be judged that it is through the through gauge, that is, the inspection is qualified.

[0023] like Figure 1 、 Figure 2 、 Figure 4 as well as Figure 5 As shown, in order to improve the detection efficiency, the feed rocker arm body 11 is slidably connected to the second positioning pin 6 through the mounting hole 16, the second arm 13 is slidably connected to the third positioning pin 7 through the connecting hole 17, and the feed rocker arm body 11 is slidably connected to the base plate 1 through the mounting hole 16, the second positioning pin 6, the connecting hole 17 and the third positioning pin 7. The matching clearances between the matching hole 15 and the first positioning pin 5, between the mounting hole 16 and the second positioning pin 6, and between the connecting hole 17 and the third positioning pin 7 are all 0.03 mm. By setting the clearance fit, the feed rocker arm body 11 can be quickly disassembled and installed between the base plate 1, and the turntable 8 can rotate freely, and no jamming occurs during detection, thereby effectively improving the detection efficiency.

[0024] like Figure 1 、 Figure 2 、 Figure 4 as well as Figure 5 As shown, in order to prevent other parts from interfering with the detection results during detection, the horizontal height of the fan-shaped plate 9 under the front projection is located between the lower wall of the first arm 12 and the upper wall of the second arm 13. The gaps between the upper wall of the fan-shaped plate 9 and the first arm 12 and between the lower wall of the fan-shaped plate 9 and the upper wall of the second arm 13 are both 0.1 mm. The height of the third positioning pin 7 extending to the upper side of the base plate 1 is less than the vertical distance between the upper wall of the second arm 13 and the lower wall of the second arm 13. The horizontal height of the fan-shaped plate 9 is located between the first arm 12 and the second arm 13, so that when the turntable 8 rotates, the fan-shaped plate 9 does not contact the first arm 12 and the second arm 13 to avoid interference. Similarly, controlling the height of the third positioning pin 7 is also to avoid interference with the fan-shaped plate 9 during detection and to improve detection accuracy.

[0025] Working principle: The first pin hole 2, the second pin hole 3 and the third pin hole 4 are completed by one clamping process, which can greatly improve the position accuracy between each other, thereby improving the accuracy of the measuring tool. The size of the first arc surface 10 can be processed according to the principle of the through gauge and the size requirements of the second arc surface 18. During inspection, the first arc surface 10 completely passes through the groove 14 through the rotation of the turntable 8 and does not contact the second arc surface 18, which can be judged as a through gauge, that is, the inspection is qualified. By setting the clearance fit, the feed rocker arm body 11 can be quickly disassembled and installed between the base plate 1, and the turntable 8 can rotate freely, and there is no jamming during inspection, which effectively improves the inspection efficiency. The horizontal height of the fan plate 9 is located between the first arm 12 and the second arm 13, so that when the turntable 8 rotates, the fan plate 9 does not contact the first arm 12 and the second arm 13 to avoid interference. Similarly, controlling the height of the third locating pin 7 is also to avoid interference with the fan plate 9 during inspection and improve inspection accuracy.

[0026] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. Feed rocker arm arc measuring tool, characterized by: The invention comprises a bottom plate (1) and a feed rocker arm body (11), wherein the inner wall of the feed rocker arm body (11) is provided with a mounting hole (16) which is passed through from top to bottom, and the front wall of the feed rocker arm body (11) is provided with a first support arm (12) and a second support arm (13) which are distributed in sequence from top to bottom, and a groove (14) is formed between the opposite sides of the first support arm (12) and the second support arm (13), and the inner walls of the first support arm (12) and the second support arm (13) are located away from the feed rocker arm body (11). The ends are provided with connecting holes (17) that are through-through from top to bottom, and the axis lines of the two groups of connecting holes (17) are collinear, a second arc surface (18) is provided inside the groove (14) and on the side close to the mounting hole (16), the upper wall of the bottom plate (1) is sequentially distributed with a first pin hole (2), a third pin hole (4) and a second pin hole (3), the axis line of the second arc surface (18) is collinear with the axis line of the first pin hole (2), the first pin hole (2), the second pin hole (3) and the third pin hole (4) are collinear. The inner side wall of the pin hole (4) is fixedly connected with a first positioning pin (5), a second positioning pin (6) and a third positioning pin (7), and the upper ends of the first positioning pin (5), the second positioning pin (6) and the third positioning pin (7) all pass through the upper wall of the bottom plate (1) and extend to the upper side of the bottom plate (1). The outer wall of one end of the first positioning pin (5) extending to the upper side of the bottom plate (1) is rotatably connected to a turntable (8) through a matching hole (15). The outer wall of the circumference of the turntable (8) is provided with a fan-shaped plate (9). The end of the sector plate (9) away from the turntable (8) is provided with a detection surface for detecting the second arc surface (18); the feed rocker arm body (11) is slidably connected to the second positioning pin (6) through the mounting hole (16); the second support arm (13) is slidably connected to the third positioning pin (7) through the connecting hole (17); and the feed rocker arm body (11) is slidably connected to the base plate (1) through the mounting hole (16), the second positioning pin (6), the connecting hole (17) and the third positioning pin (7).

2. The feed rocker arm arc measuring tool according to claim 1, characterized in that: The detection surface is a first arc surface (10), which is arranged at one end of the sector plate (9) away from the turntable (8), the axis of the first arc surface (10) is collinear with the axis of the first pin hole (2), and the arc radius of the first arc surface (10) is adapted to the second arc surface (18).

3. The feed rocker arm arc measuring tool according to claim 2, characterized in that: The first pin hole (2), the second pin hole (3) and the third pin hole (4) are completed by one-time clamping processing. When the first pin hole (2), the second pin hole (3) and the third pin hole (4) are projected from above, the center of the third pin hole (4) is located on the line connecting the center of the first pin hole (2) and the center of the second pin hole (3).

4. The feed rocker arm arc measuring tool according to claim 3, characterized in that: The fitting clearances between the fitting hole (15) and the first positioning pin (5), between the mounting hole (16) and the second positioning pin (6), and between the connecting hole (17) and the third positioning pin (7) are all 0.03 mm.

5. The feed rocker arm arc measuring tool according to claim 4, characterized in that: The horizontal height of the fan-shaped plate (9) in frontal projection is located between the lower wall of the first arm (12) and the upper wall of the second arm (13), and the gaps between the upper wall of the fan-shaped plate (9) and the first arm (12) and between the lower wall of the fan-shaped plate (9) and the upper wall of the second arm (13) are both 0.1 mm.

6. The feed rocker arm arc measuring tool according to claim 5, characterized in that: The height of the third positioning pin (7) extending to the upper side of the bottom plate (1) is less than the vertical distance between the upper wall of the second support arm (13) and the lower wall of the second support arm (13).

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