Auxiliary tool for adjusting three-coordinate angle of fixed measuring base

Abstract

The invention relates to the technical field of precision detection auxiliary equipment, in particular to an auxiliary tool for adjusting the three-coordinate angle of a fixed type measuring seat, which comprises a dial bottom plate, a support frame, a sliding block and a positioning block, one side of the dial bottom plate is provided with circular scale marks, the support frame is an L-shaped frame spliced by section bars, the sliding block is C-shaped and vertically slides up and down along the side surface of the support frame, and the positioning block is arranged on the side surface of the support frame. Three threaded holes A are formed in the top face of the sliding block, the positioning block is a Z-shaped right-angle bend, three through holes B are formed in the top face of one end of the positioning block and fixed to the threaded holes A through screws, a circular groove A is formed in the other end of the positioning block and matched with a groove B of the disc-shaped measuring needle, and a protruding pin is arranged on the back face of the positioning block and matched with a kidney-shaped hole of the disc-shaped measuring needle to position and limit the angular direction. The auxiliary tool for adjusting the angle of the probe is simple in structure, low in cost, convenient to use and capable of remarkably improving efficiency and precision, offline presetting, one-time clamping and rapid verification of the angle of the probe are achieved, and high-precision angle adjusting work is transferred to an external safe area from the interior of a CMM.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of precision detection auxiliary equipment, and particularly relates to a three-coordinate angle auxiliary tool for adjusting a fixed measuring seat. BACKGROUND

[0002] The auxiliary tool for adjusting the angle of a measuring needle is based on the higher pursuit of measurement efficiency, operation precision, equipment safety and data consistency. Their development process is from experience-based operation to tool-based guarantee, and from online debugging to offline pre-adjustment. These tools, although seemingly simple, are indispensable practical bridges between theoretical precision (the design precision of a CMM body and a probe) and actual precision (the precision of the final measurement result). They ensure that the measuring needle, the "CMM antenna", can be correctly set, so that the expensive three-coordinate measuring machine can perform its due performance. SUMMARY

[0003] To solve the above technical problems, the present application provides a three-coordinate angle auxiliary tool for adjusting a fixed measuring seat.

[0004] The specific technical solutions are as follows: A three-coordinate angle auxiliary tool for adjusting a fixed measuring seat is used for angle adjustment of a disc-shaped measuring needle. One end of the disc-shaped measuring needle is a disc with a groove B at the edge, and a waist hole is formed in the bottom surface of the disc. The other end is connected to a small measuring needle through a vertical measuring rod, and a threaded hole B is formed in the end. The tool comprises a dial plate bottom plate, a support frame, a sliding block and a positioning block. One side of the dial plate bottom plate is provided with a circular scale line, the center of the scale line is a positioning precision hole, and four counterbores are formed on the other side. The bottom of the support frame is fixed through screws. The support frame is an L-shaped frame spliced from section bars, and the aluminum alloy section bar is provided with a T-shaped groove. A T-shaped block is arranged in the T-shaped groove. The sliding block is C-shaped and vertically slides along the side surface of the support frame. Three threaded holes A are formed in the top surface of the sliding block. The positioning block is Z-shaped and is bent at a right angle. Three through holes B are formed in the top surface of one end of the positioning block and are fixed through screws in the threaded holes A. A circular groove A is formed in the other end of the positioning block and cooperates with the groove B of the disc-shaped measuring needle. A protruding pin is arranged on the back surface of the positioning block and cooperates with the waist hole of the disc-shaped measuring needle to limit the angle.

[0005] A positioning bushing and a threaded positioning pin are further included. The positioning bushing is a hollow cylinder and is installed in the positioning precision hole. One end of the threaded positioning pin is processed into a threaded hole C and is installed in the threaded hole B through a screw. The other end of the threaded positioning pin is a cylinder and cooperates with the hollow of the positioning bushing.

[0006] The scale line part of the dial plate bottom plate can be vertically flipped and switched between X-axis, Y-axis and Z-axis angle adjustment. The scale line is uniformly distributed in four angle regions of 0°-90°, and the scale line angle of each small grid is 1°.

[0007] The dial base plate is provided with a lightening groove and a hand holding groove at the edge of both ends.

[0008] The material of the dial base plate is aluminum alloy and the surface is anodized; the material of the slider is aluminum alloy; the material of the positioning block is pre-hardened chromium-molybdenum alloy die steel P20 which has been heat treated when leaving the factory; the material of the positioning bushing and the threaded positioning pin is CrWMn tool steel which is integrally quenched to increase the wear resistance of the surface.

[0009] The material of the support frame is 6-series aluminum alloy profile.

[0010] The slider is provided with a through hole A at both ends and is connected with the T-shaped block through a screw, slides up and down along the side surface of the support frame and is further locked by the screw.

[0011] The front surface of the slider is provided with two waist grooves.

[0012] The small measuring needle is one or two.

[0013] Compared with the prior art, the present application has the following beneficial technical effects: The present application provides a measuring needle angle adjustment auxiliary tool which is simple in structure, low in cost, convenient to use and can significantly improve the efficiency and precision. The core target is to realize the "offline presetting, one-time clamping and rapid verification" of the measuring needle angle, and to transfer the high-precision angle adjustment work from the inside of the CMM to the outside safe area.

[0014] The present application converts most of the adjustment time from the expensive CMM occupation time to offline preparation time, significantly improves the equipment utilization rate and greatly improves the efficiency. By replacing the naked eye observation with a high-precision mechanical positioning surface, the subjective error of angle setting is fundamentally eliminated, and the accuracy of the measurement result is ensured. All operations are completed in the safe area outside the CMM workbench, completely avoiding the equipment collision accidents caused by manual adjustment. All angle settings are based on a unified physical reference, ensuring the consistency of different personnel and different time operations, and the comparability of the measurement data. The structure is simple, and the manufacturing and maintenance cost is much lower than that of the imported pre-adjustment instrument, so that the majority of small and medium-sized manufacturing enterprises can also enjoy the benefits brought by the offline pre-adjustment technology. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a schematic diagram of the three-dimensional structure of the tool of the present application; Figure 2 It is a schematic diagram of the front surface of the dial base plate of the present application; Figure 1 It is a schematic diagram of the front surface of the dial base plate of the present application; Figure 3 It is a schematic diagram of the front surface of the dial base plate of the present application; Figure 4 It is a schematic diagram of the back surface of the dial base plate of the present application; Figure 5 This is a three-dimensional structural diagram of the support frame of the present invention; Figure 6 This is a three-dimensional structural diagram of the slider of the present invention; Figure 7 This is a front view of the positioning block of the present invention; Figure 8 This is a schematic diagram of the back of the positioning block of the present invention; Figure 9 This is a three-dimensional structural diagram of the disc-shaped probe of the present invention; Figure 10 This is a three-dimensional structural schematic diagram of the positioning bushing of the present invention; Figure 11 This is a three-dimensional structural diagram of the threaded locating pin of the present invention; In the diagram, 1. Dial base plate; 11. Positioning precision hole; 12. Scale line; 13. Weight reduction groove; 14. Hand lock groove; 15. Countersunk hole; 2. Support frame; 21. T-slot; 3. Slider; 31. Through hole A; 32. Threaded hole A; 33. Waist groove; 4. Positioning block; 41. Groove A; 42. Through hole B; 43. Raised pin; 5. Disc-shaped probe; 51. Groove B; 52. Waist hole; 53. Probe; 54. Small probe; 55. Threaded hole B; 6. Positioning bushing; 7. Threaded positioning pin; 71. Threaded hole C; 8. Screw. Detailed Implementation

[0016] The present invention will now be described in detail with reference to the accompanying drawings, but the scope of protection of the present invention is not limited by the drawings.

[0017] Figure 1 This is a three-dimensional structural diagram of the tooling of the present invention. Figure 2 for Figure 1 A magnified view of a portion of point I in the middle. Figure 3 This is a front view of the dial base plate of the present invention. Figure 4 This is a schematic diagram of the back of the dial base plate of the present invention. Figure 5 This is a three-dimensional structural diagram of the support frame of the present invention. Figure 6 This is a three-dimensional structural diagram of the slider of the present invention. Figure 7 This is a front view of the positioning block of the present invention. Figure 8 This is a schematic diagram of the back of the positioning block of the present invention. Figure 9 This is a three-dimensional structural diagram of the disc-shaped probe of the present invention. Figure 10 This is a three-dimensional structural diagram of the positioning bushing of the present invention. Figure 11 The figure shows a three-dimensional structural diagram of the threaded locating pin of the present invention: This invention provides an auxiliary fixture for adjusting the angle of a fixed measuring base three-coordinate measuring machine, used for adjusting the angle of a disc-shaped probe 5. One end of the disc-shaped probe 5 is a disc with a groove B51 on its edge and a waist hole 52 on its bottom surface. The other end is connected to one or two small probes 54 via a vertical measuring rod 53, and a threaded hole B55 is provided at its end. The fixture includes a scale base plate 1, a support frame 2, a slider 3, and a positioning block 4. The scale base plate 1 has a circular scale line 12 on one side, with the center of the scale line 12 being a positioning precision point. Hole 11 is provided on one side, and four countersunk holes 15 are provided on the other side, which are fixed to the bottom of the support frame 2 by screws 8. The support frame 2 is an L-shaped frame made of spliced ​​profiles. The aluminum alloy profile has a T-slot 21 with a T-block inside. The slider 3 is C-shaped and slides vertically up and down along the side of the support frame 2. The top surface of the slider 3 has three threaded holes A32, and the two ends of the slider 3 have through holes A31, which are connected to the T-block by screws 8. It slides up and down along the side of the support frame 2 and is further locked by screws 8. The front of the slider 3 has two waist grooves 33, which are convenient to pick up and reduce weight. The positioning block 4 is a Z-shaped right-angle bend. The top surface of one end has three through holes B42, which are fixed to the threaded holes A32 by screws 8. The other end has a circular groove A41, which cooperates with the groove B51 of the disc probe 5. The back has a protruding pin 43, which cooperates with the waist hole 52 of the disc probe 5 to position and limit the angle. It also includes a positioning bushing 6 and a threaded positioning pin 7. The positioning bushing 6 is a hollow cylinder and is installed in the positioning precision hole 11. One end of the threaded positioning pin 7 is machined into a threaded hole C71 and is installed in the threaded hole B55 by a screw 8. The other end is a cylinder and fits with the hollow part of the positioning bushing 6.

[0018] The scale lines 12 on the dial base plate 1 can be vertically flipped, switching between X-axis, Y-axis, and Z-axis angle adjustments. The scale lines 12 are evenly distributed across four angle zones from 0° to 90°, with each small scale line having an angle of 1°. Weight-reduction grooves 13 are provided on the dial base plate 1 to reduce weight without compromising strength, and handle grooves 14 are provided at both ends for easy installation and removal. The dial base plate 1 is made of aluminum alloy with an anodized surface to improve its wear resistance. The slider 3 is made of aluminum alloy; the positioning block 4 is made of pre-hardened chromium-molybdenum alloy mold steel P20, which has been heat-treated at the factory to achieve the required hardness (typically HRC 30-36); the positioning bushing 6 and the threaded positioning pin 7 are made of CrWMn tool steel, with overall quenching treatment to increase surface wear resistance. The support frame 2 is made of 6-series aluminum alloy profile, which comes with a variety of dedicated connectors (angle brackets, bolts, nuts), allowing for rapid modular assembly into various structures without welding, facilitating design changes and simplifying maintenance.

[0019] In use, install the positioning bushing 6 into the positioning precision hole 11 of the dial base plate 1, and install the threaded positioning pin 7 into the threaded hole B55 at the bottom of the disc-shaped probe 5. Fix the through hole B42 of the positioning block 4 to the threaded hole A32, connecting the disc-shaped probe 5 to the slider 3. Install the disc-shaped probe 5 into the groove A41 of the positioning block 4 through the groove B51 at the disc, allowing the protruding pin 43 and the waist hole 52 to engage for positioning and angular constraint. Move the disc-shaped probe 5 up and down with the slider 3 until the threaded positioning pin 7 at the bottom engages with the positioning bushing 6 of the dial base plate 1 to achieve centering. After reaching the appropriate position, tighten with screws. Finally, adjust the angle of the small probe according to the scale line 12. The scale line 12 can be vertically flipped as needed, switching between X-axis, Y-axis, and Z-axis angle adjustments. After angle adjustment, the disc-shaped probe can be removed and placed in a coordinate measuring machine tool for use.

Claims

1. An auxiliary tooling for adjusting the angle of a fixed measuring base three-coordinate measuring machine, characterized in that: For angle adjustment of the disc-shaped probe (5), one end of the disc-shaped probe (5) is a disc with a groove B (51) on the edge, and a waist hole (52) is opened on the bottom surface of the disc. The other end is connected to a small probe (54) through a vertical probe rod (53), and a threaded hole B (55) is opened at the end. The tooling includes a dial base plate (1), a support frame (2), a slider (3) and a positioning block (4). The dial base plate (1) has a circular scale line (12) on one side, and a positioning precision hole (11) is located in the center of the scale line (12). Four countersunk holes (15) are opened on the other side and fixed to the bottom of the support frame (2) by screws (8). The support frame (2) The L-shaped frame is made of spliced ​​profiles. The aluminum alloy profiles have T-slots (21) and T-blocks are built into the T-slots (21). The slider (3) is C-shaped and slides vertically up and down along the side of the support frame (2). The top surface of the slider (3) has three threaded holes A (32). The positioning block (4) is a Z-shaped right-angle bend. One end of the top surface has three through holes B (42) which are fixed to the threaded holes A (32) by screws (8). The other end has a circular groove A (41) which cooperates with the groove B (51) of the disc probe (5). The back has a protruding pin (43) which cooperates with the waist hole (52) of the disc probe (5) to position and limit the angle.

2. The auxiliary tooling for adjusting the angle of a fixed measuring base according to claim 1, characterized in that: It also includes a positioning bushing (6) and a threaded positioning pin (7). The positioning bushing (6) is a hollow cylinder and is installed in the positioning precision hole (11). One end of the threaded positioning pin (7) is machined into a threaded hole C (71) and installed in the threaded hole B (55) by a screw (8). The other end is a cylinder and fits with the hollow positioning bushing (6).

3. The auxiliary tooling for adjusting the angle of a fixed measuring base according to claim 1, characterized in that: The scale line (12) of the dial base plate (1) can be vertically flipped and switched between the angle adjustment of the X-axis, Y-axis and Z-axis. The scale line (12) is evenly distributed in four angle areas from 0° to 90°, and the angle of each small scale line (12) is 1°.

4. The auxiliary tooling for adjusting the angle of the fixed measuring base according to claim 1, characterized in that: The dial base plate (1) has a weight reduction groove (13) and a hand grip groove (14) at both ends.

5. The auxiliary tooling for adjusting the angle of the fixed measuring base according to claim 1, characterized in that: The dial base plate (1) is made of aluminum alloy and has an anodized surface; the slider (3) is made of aluminum alloy; the positioning block (4) is made of pre-hardened chromium-molybdenum alloy mold steel P20 and has been heat-treated at the factory; the positioning bushing (6) and the threaded positioning pin (7) are made of CrWMn tool steel and have been quenched to increase the wear resistance of the surface.

6. The auxiliary tooling for adjusting the angle of a fixed measuring base according to claim 1, characterized in that: The support frame (2) is made of 6-series aluminum alloy profile.

7. The auxiliary tooling for adjusting the angle of a fixed measuring base according to claim 1, characterized in that: The slider (3) has through holes A (31) at both ends, which are connected to the T-block by screws (8), and slide up and down along the side of the support frame (2) and are further locked by screws (8).

8. The auxiliary tooling for adjusting the angle of a fixed measuring base according to claim 1, characterized in that: The slider (3) has two grooves (33) on its front side.

9. The auxiliary tooling for adjusting the angle of a fixed measuring base according to claim 1, characterized in that: The small probe (54) is one or two.

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