Positioning device for contourgraph detection

Abstract

The utility model discloses a positioning device for contourgraph detection, which comprises a base (1), and is characterized in that a multi-degree-of-freedom adjusting mechanism is arranged on the base (1), the multi-degree-of-freedom adjusting mechanism consists of an X-axis adjusting mechanism, a rotation adjusting mechanism and a Y-axis adjusting mechanism, the top of the Y-axis adjusting mechanism is connected with an overturning mechanism, and the X-axis adjusting mechanism is connected with the rotation adjusting mechanism. And a positioning and clamping mechanism is arranged on the turnover mechanism. After the positioning and clamping mechanism clamps a workpiece, the turnover mechanism can drive the workpiece to turn over in space so as to adjust the posture of the workpiece, the X-axis adjusting mechanism and the Y-axis adjusting mechanism can drive the workpiece to move horizontally in the X-axis direction and the Y-axis direction, and the rotation adjusting mechanism can drive the workpiece to rotate with the Z-axis as the axis.

Description

Technical Field

[0001] This utility model relates to the field of inspection tools, and in particular to a positioning device for profilometer inspection. Background Technology

[0002] Before a product leaves the factory, its dimensions, accuracy, and other parameters must be tested. Only products that pass the tests can be shipped. Sometimes, a profilometer is needed for these tests. When using a profilometer, the workpiece to be tested must first be clamped and positioned. However, traditional tooling fixtures cannot be adjusted after clamping the workpiece. Therefore, if there is a positioning deviation during the initial clamping, and the position or orientation of the workpiece needs to be adjusted, it must be re-clamped, affecting work efficiency.

[0003] Therefore, a method or apparatus is needed to solve the above problems. Summary of the Invention

[0004] This invention addresses the aforementioned shortcomings of existing technologies by proposing a positioning device for profilometer detection that is simple in structure, ingeniously designed, rationally laid out, and capable of adjusting multiple degrees of freedom to meet the needs of fine-tuning after positioning.

[0005] The technical solution of this utility model is: a positioning device for profilometer detection, comprising a base 1, characterized in that: a multi-degree-of-freedom adjustment mechanism is provided on the base 1, the multi-degree-of-freedom adjustment mechanism being composed of an X-axis adjustment mechanism, a rotation adjustment mechanism, and a Y-axis adjustment mechanism, a flipping mechanism being connected to the top of the Y-axis adjustment mechanism, and a positioning clamping mechanism being provided on the flipping mechanism.

[0006] The X-axis adjustment includes two symmetrically distributed X-axis slide rails 2 mounted on a base 1. An X-axis platform 3 is slidably connected to the X-axis slide rails 2. An X-axis support block 4 is provided at one end of the base 1, and an X-axis lead screw 5 is rotatably supported on the X-axis support block 4. A handwheel 6 is provided at the end of the X-axis lead screw 5, and the X-axis lead screw 5 is threadedly connected to a nut block provided on the bottom surface of the X-axis platform 3.

[0007] The rotary adjustment mechanism includes a rotary platform 8, which is rotatably connected to the X-axis platform 3 via a horizontal bearing 7 located at the centroid of the X-axis platform 3. The rotary platform 8 has a first protrusion 9, on which a connecting bolt 10 and a boss are mounted. The X-axis platform 3 has a rotary support block 11, on which a rotary indexing head 12 is connected. The end of the rotary indexing head 12 contacts the sidewall of the boss. A rotary return spring 13 is connected between the rotary support block 11 and the connecting bolt 10. The rotary platform 8 also has a second protrusion 14, on which a rotary locking screw 15 is threadedly connected.

[0008] The Y-axis adjustment mechanism includes a pair of Y-axis slide rails mounted on the rotary platform 8. A Y-axis platform 16 is slidably connected to the Y-axis slide rails. A Y-axis support block 17 is mounted on the X-axis platform 3. A Y-axis indexing head 18 is connected to the Y-axis support block 17. The end of the Y-axis indexing head 18 contacts the side wall of the Y-axis limiting frame 19. A Y-axis positioning bolt 20 is threaded onto the Y-axis limiting frame 19. The end of the Y-axis positioning bolt 20 contacts the side wall of the rotary platform 8. The Y-axis adjustment mechanism also includes two Y-axis return springs 21 distributed along the Y-axis direction. The Y-axis return springs 21 are located in grooves formed within the rotary platform 8, with one end of the Y-axis return spring 21 fixedly connected to the rotary platform 8 and the other end fixedly connected to the bottom surface of the Y-axis platform 16.

[0009] The flipping mechanism includes a flipping bracket, which consists of a base plate 22 and two upright plates 23 located at both ends of the base plate 22. Coaxial short shafts 24 are supported on the two upright plates 23, and the two short shafts 24 are located on opposite sides of the flipping frame 25.

[0010] The positioning and clamping mechanism includes a bidirectional lead screw 26 rotatably supported within the tilting frame 25. One end of the bidirectional lead screw 26 is equipped with a bidirectional lead screw handwheel 27. The bidirectional lead screw 26 has two equal-length, oppositely helical threads. Two slides 28 are connected to the bidirectional lead screw 26, each connected to one of the two threaded sections of the bidirectional lead screw 26. The slides 28 are also slidably connected to the tilting frame 25 via a frame guide rail 29. A V-shaped bracket 30 is provided on each slide 28. Two telescopic columns 31 are symmetrically arranged on the slide 28. A pressure strip 32 is provided at the top of the telescopic column 31. At the same time, two end limit bars 33 are symmetrically arranged on the side wall of the slide 28 and are hinged to each other. A locking knob 34 is provided at the connection shaft between the end limit bar 33 and the slide 28. A reducer box 35 is fixedly connected to the side wall of the flip frame 25. A reducer handwheel 36 is connected to the input end of the reducer box 35, and its output end is connected to a short shaft 24.

[0011] A pointer 42 is provided on the side wall of the X-axis platform 3, and a first scale 37 matching the pointer 42 is provided on the base 1.

[0012] An electronic angle gauge 38 is provided on the side wall of the flipping frame 25.

[0013] An elastic clamping block 39 is provided on the outer side of the upright plate 23, located outside the short shaft 24. A clamping bolt 40 is connected to the elastic clamping block 39. When the clamping bolt 40 is tightened, the elastic clamping block 39 can fit against the outer wall of the short shaft 24.

[0014] The edge of the flip frame 25 is provided with a second scale 43 that matches the slide 28.

[0015] Compared with the prior art, this utility model has the following advantages:

[0016] This type of positioning device for profilometer inspection features a simple structure, ingenious design, and reasonable layout. It addresses the problem of traditional positioning devices requiring re-clamping after workpiece clamping due to the inability to adjust degrees of freedom. A unique structure is designed to address this issue. It supports the flipping mechanism through X-axis, rotary, and Y-axis adjustment mechanisms, while the workpiece clamping mechanism is located on the flipping mechanism. After clamping, the workpiece can achieve adjustments in multiple directions: horizontal movement along the X and Y axes, rotation around the Z-axis, and spatial posture adjustment. The combination of these movements allows for fine-tuning of the workpiece in space while clamped, adapting to profilometer inspection. This positioning device achieves flexible workpiece positioning, ensuring accurate inspection results while saving manual labor. Furthermore, its simple manufacturing process and low cost make it highly advantageous and suitable for widespread application in this field, with a promising market prospect. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural schematic diagram of an embodiment of the present utility model.

[0018] Figure 2 This is a schematic diagram of the X-axis adjustment mechanism in an embodiment of this utility model.

[0019] Figure 3 This is a schematic diagram of the structure of the rotary shaft adjustment mechanism in an embodiment of this utility model.

[0020] Figure 4 This is a schematic diagram of the Y-axis adjustment mechanism in an embodiment of this utility model.

[0021] Figure 5 This is a schematic diagram of the structure of the flipping mechanism and the positioning clamping mechanism in the embodiment of this utility model. Detailed Implementation

[0022] The specific embodiments of this utility model will be described below with reference to the accompanying drawings. Figures 1 to 5As shown: A positioning device for profilometer detection includes a base 1 as a foundation. A multi-degree-of-freedom adjustment mechanism is provided on the base 1. The multi-degree-of-freedom adjustment mechanism consists of an X-axis adjustment mechanism, a rotation adjustment mechanism, and a Y-axis adjustment mechanism. A flipping mechanism is connected to the top of the Y-axis adjustment mechanism, and a positioning clamping mechanism is provided on the flipping mechanism.

[0023] The X-axis adjustment includes two symmetrically distributed X-axis slide rails 2 mounted on a base 1. An X-axis platform 3 is slidably connected to the X-axis slide rails 2. An X-axis support block 4 is provided at one end of the base 1, and an X-axis lead screw 5 is rotatably supported on the X-axis support block 4. A handwheel 6 is provided at the end of the X-axis lead screw 5, and the X-axis lead screw 5 is threadedly connected to a nut block provided on the bottom surface of the X-axis platform 3.

[0024] The rotary adjustment mechanism includes a rotary platform 8, which is rotatably connected to the X-axis platform 3 via a horizontal bearing 7 located at the centroid of the X-axis platform 3. The rotary platform 8 has a first protrusion 9, on which a connecting bolt 10 and a boss are mounted. The X-axis platform 3 has a rotary support block 11, on which a rotary indexing head 12 is connected. The end of the rotary indexing head 12 contacts the sidewall of the boss. A rotary return spring 13 is connected between the rotary support block 11 and the connecting bolt 10. The rotary platform 8 also has a second protrusion 14, on which a rotary locking screw 15 is threadedly connected.

[0025] The Y-axis adjustment mechanism includes a pair of Y-axis slide rails mounted on the rotary platform 8. A Y-axis platform 16 is slidably connected to the Y-axis slide rails. A Y-axis support block 17 is mounted on the X-axis platform 3. A Y-axis indexing head 18 is connected to the Y-axis support block 17. The end of the Y-axis indexing head 18 contacts the side wall of the Y-axis limiting frame 19. A Y-axis positioning bolt 20 is threaded onto the Y-axis limiting frame 19. The end of the Y-axis positioning bolt 20 contacts the side wall of the rotary platform 8. The Y-axis adjustment mechanism also includes two Y-axis return springs 21 distributed along the Y-axis direction. The Y-axis return springs 21 are located in grooves formed within the rotary platform 8, with one end of the Y-axis return spring 21 fixedly connected to the rotary platform 8 and the other end fixedly connected to the bottom surface of the Y-axis platform 16.

[0026] The flipping mechanism includes a flipping bracket, which consists of a base plate 22 and two upright plates 23 located at both ends of the base plate 22. Coaxial short shafts 24 are supported on the two upright plates 23, and the two short shafts 24 are located on opposite sides of the flipping frame 25.

[0027] The positioning and clamping mechanism includes a bidirectional lead screw 26 rotatably supported within the tilting frame 25. One end of the bidirectional lead screw 26 is equipped with a bidirectional lead screw handwheel 27. The bidirectional lead screw 26 has two equal-length, oppositely helical threads. Two slides 28 are connected to the bidirectional lead screw 26, each connected to one of the two threaded sections of the bidirectional lead screw 26. The slides 28 are also slidably connected to the tilting frame 25 via a frame guide rail 29. A V-shaped bracket 30 is provided on each slide 28. Two telescopic columns 31 are symmetrically arranged on the slide 28. A pressure strip 32 is provided at the top of the telescopic column 31. At the same time, two end limit bars 33 are symmetrically arranged on the side wall of the slide 28 and are hinged to each other. A locking knob 34 is provided at the connection shaft between the end limit bar 33 and the slide 28. A reducer box 35 is fixedly connected to the side wall of the flip frame 25. A reducer handwheel 36 is connected to the input end of the reducer box 35, and its output end is connected to a short shaft 24.

[0028] A pointer 42 is provided on the side wall of the X-axis platform 3, and a first scale 37 matching the pointer 42 is provided on the base 1.

[0029] An electronic angle gauge 38 is provided on the side wall of the flipping frame 25.

[0030] An elastic clamping block 39 is provided on the outer side of the upright plate 23, located outside the short shaft 24. A clamping bolt 40 is connected to the elastic clamping block 39. When the clamping bolt 40 is tightened, the elastic clamping block 39 can fit against the outer wall of the short shaft 24.

[0031] The edge of the flip frame 25 is provided with a second scale 43 that matches the slide 28.

[0032] The working process of the positioning device for profilometer detection in this embodiment of the utility model is as follows: First, the workpiece 41 to be detected by the profilometer is placed on the positioning clamping mechanism and clamped. Then, the various mechanisms in the device are adjusted according to actual needs. The position of the workpiece 41 in the X-axis direction is adjusted by the X-axis adjustment mechanism, the position of the workpiece 41 in the Y-axis direction is adjusted by the Y-axis adjustment mechanism, the rotation angle of the workpiece 41 about the Z-axis is adjusted by the rotation adjustment mechanism, and the spatial posture of the workpiece 41 is adjusted by the flipping mechanism. After the adjustment is appropriate, the profilometer is used to detect it. After the detection is completed, the workpiece 41 is removed from the positioning clamping mechanism, and a new workpiece to be detected is placed on the positioning clamping mechanism. The above process is repeated.

[0033] When it is necessary to make adjustments in the X-axis direction using the X-axis adjustment mechanism, the handwheel 6 is used to drive the X-axis lead screw 5 to rotate, which in turn drives the X-axis platform 3 to move along the X-axis slide rail 2 to achieve adjustment in the X-axis direction.

[0034] When a rotary adjustment mechanism is needed for rotary adjustment, the rotary indexing head 12 is rotated. The end of the rotary indexing head 12 pushes the boss to move, thereby driving the rotary platform 8 to rotate relative to the X-axis platform 3 for fine adjustment in the rotation direction. After adjusting to a suitable rotation angle, the rotary locking screw 15 is tightened. The bottom surface of the rotary locking screw 15 rests on the X-axis platform 3 to fix the rotary platform 8. When the rotary indexing head 12 pushes the boss to move, the rotary platform 8 rotates in one direction. When the rotary indexing head 12 moves in the opposite direction, the rotary platform 8 rotates in the other direction under the pulling action of the rotary return spring 13.

[0035] When adjustments in the Y-axis direction are required using the Y-axis adjustment mechanism, rotate the Y-axis indexing head 18 to push the Y-axis limit frame 19 and the Y-axis platform 16 together to move along the Y-axis direction. When the Y-axis indexing head 18 pushes the Y-axis limit frame 19 to move, the Y-axis platform 16 moves in one direction. When the Y-axis indexing head 18 moves in the opposite direction, the Y-axis platform 16 moves in the other direction under the pulling action of the two Y-axis return springs 21. After the Y-axis platform 16 is adjusted to the appropriate position, tighten the Y-axis positioning bolt 20, whose end rests against the side wall of the rotary platform 8 to fix the Y-axis platform 16.

[0036] When it is necessary to use the flipping mechanism to drive the workpiece 41 to adjust its posture in space, the operator inputs torque through the reducer handwheel 36. After the transmission ratio is changed through the reducer box 35, the short shaft 24 is rotated, which in turn drives the flipping frame 25 to swing relative to the upright plate 23 about the central axis of the short shaft 24. During this process, the user can observe the reading on the electronic angle gauge 38 to determine the tilt angle of the flipping frame 25.

[0037] When clamping workpiece 41 using the positioning and clamping mechanism, first adjust the distance between the two slides 28 according to the length of workpiece 41. During adjustment, drive the double-acting screw 26 to rotate. Since the two slides 28 are connected to the two sections of threads with opposite directions on the double-acting screw 26, the rotation of the double-acting screw 26 will drive the two slides 28 to move towards each other or in opposite directions, thereby adjusting the distance between the two slides 28. After the adjustment is appropriate, place workpiece 41 on the two slides 28, support workpiece 41 with the V-shaped bracket 30, and then rotate the end limit stop 33. Make the end of the limiting stop 33 contact the end face of the workpiece 41, and then tighten the locking knob 34 to fix the limiting stop 33. After the limiting stop 33 at both ends is operated in the above way, the front and rear ends of the workpiece are limited. Adjust the overall height of the telescopic column 31 so that the pressure strip 32 at the top of the telescopic column 31 presses on the top surface of the workpiece 41. The pressing force is the friction between the sleeve and the telescopic rod in the telescopic column 31. After all four telescopic columns 31 and pressure strips 32 are pressed, the workpiece 41 is pressed on the V-shaped bracket 30 to achieve longitudinal limitation.

[0038] After proper adjustment, tighten the clamping bolt 40. The clamping bolt 40 will cause the two elastic clamping blocks 39 to move towards each other, thereby clamping them onto the outer wall of the short shaft 24 and fixing them in place.

[0039] Of all the movements mentioned above, the adjustment in the X-axis direction is a large-scale adjustment, while the adjustments in the other directions are all fine-tuning. Therefore, a first scale 37 for judging the displacement magnitude is designed for the movement in the X-axis direction. The adjustment amount of the workpiece in the X-axis direction is judged by the distance the pointer 42 moves on the first scale 37.

[0040] Meanwhile, the adjustment of the distance between the two carriages 28 in the flipping mechanism is also a large-scale adjustment. Therefore, a second scale 43 is also set on the side of the flipping frame 25, and the length of this second scale 43 is greater than the length of the workpiece 41 being measured. When adjusting the distance between the carriages 28, the distance between the two carriages 28 can be judged intuitively and quickly through the second scale 43.

Claims

1. A positioning device for profilometer detection, comprising a base (1), characterized in that: The base (1) is provided with a multi-degree-of-freedom adjustment mechanism, which consists of an X-axis adjustment mechanism, a rotation adjustment mechanism, and a Y-axis adjustment mechanism. A flipping mechanism is connected to the top of the Y-axis adjustment mechanism, and a positioning and clamping mechanism is provided on the flipping mechanism. The X-axis adjustment includes two symmetrically distributed X-axis slide rails (2) on the base (1), an X-axis platform (3) slidably connected to the X-axis slide rails (2), an X-axis support block (4) at one end of the base (1), an X-axis lead screw (5) rotatably supported on the X-axis support block (4), a handwheel (6) at the end of the X-axis lead screw (5), and the X-axis lead screw (5) threadedly connected to a nut block on the bottom surface of the X-axis platform (3). The rotary adjustment mechanism includes a rotary platform (8), which is rotatably connected to the X-axis platform (3) via a horizontal bearing (7) located at the centroid of the X-axis platform (3). The rotary platform (8) is provided with a first protrusion (9), and the first protrusion (9) is provided with a connecting bolt (10) and a boss. The X-axis platform (3) is provided with a rotary support block (11), and a rotary indexing head (12) is connected to the rotary support block (11). The end of the rotary indexing head (12) contacts the side wall of the boss. A rotary return spring (13) is connected between the rotary support block (11) and the connecting bolt (10). The rotary platform (8) is also provided with a second protrusion (14), and a rotary locking screw (15) is threaded onto the second protrusion (14). The Y-axis adjustment mechanism includes a pair of Y-axis slide rails mounted on a rotary platform (8). A Y-axis platform (16) is slidably connected to the Y-axis slide rails. A Y-axis support block (17) is mounted on the X-axis platform (3). A Y-axis indexing head (18) is connected to the Y-axis support block (17). The end of the Y-axis indexing head (18) contacts the side wall of the Y-axis limiting frame (19). A Y-axis positioning bolt (20) is threaded onto the Y-axis limiting frame (19). The end of the Y-axis positioning bolt (20) contacts the side wall of the rotary platform (8). The Y-axis adjustment mechanism also includes two Y-axis return springs (21) distributed along the Y-axis direction. The Y-axis return springs (21) are located in grooves opened in the rotary platform (8). One end of the Y-axis return spring (21) is fixedly connected to the rotary platform (8), and the other end is fixedly connected to the bottom surface of the Y-axis platform (16). The flipping mechanism includes a flipping bracket, which consists of a base plate (22) and two upright plates (23) located at both ends of the base plate (22). The two upright plates (23) are respectively supported by coaxial short shafts (24), and the two short shafts (24) are located on two opposite sides of the flipping frame (25). The positioning and clamping mechanism includes a bidirectional lead screw (26) rotatably supported within a flipping frame (25). One end of the bidirectional lead screw (26) is equipped with a bidirectional lead screw handwheel (27). The bidirectional lead screw (26) has two equal-length threads with opposite directions of rotation. Two slides (28) are also connected to the bidirectional lead screw (26). The two slides (28) are respectively connected to the two threads on the bidirectional lead screw (26). Simultaneously, the slides (28) are slidably connected to the flipping frame (25) via a frame guide rail (29). A V-shaped bracket (30) is provided on the slide (28). Two telescopic columns (31) are symmetrically arranged on the slide (28). A pressure strip (32) is provided at the top of the telescopic column (31). At the same time, two end limit bars (33) that are hinged to the slide (28) are symmetrically arranged on the side wall of the slide (28). A locking knob (34) is also provided at the connection shaft between the end limit bar (33) and the slide (28). A reducer box (35) is fixedly connected to the side wall of the flip frame (25). A reducer handwheel (36) is connected to the input end of the reducer box (35), and its output end is connected to a short shaft (24).

2. The positioning device for profilometer detection according to claim 1, characterized in that: A pointer (42) is provided on the side wall of the X-axis platform (3), and a first scale (37) matching the pointer (42) is provided on the base (1).

3. The positioning device for profilometer detection according to claim 1, characterized in that: An electronic angle gauge (38) is provided on the side wall of the flipping frame (25).

4. The positioning device for profilometer detection according to claim 1, characterized in that: An elastic clamping block (39) is provided on the outside of the vertical plate (23) and located outside the short shaft (24). A clamping bolt (40) is connected to the elastic clamping block (39). When the clamping bolt (40) is tightened, the elastic clamping block (39) can fit against the outer wall of the short shaft (24).

5. The positioning device for profilometer detection according to claim 1, characterized in that: The edge of the flip frame (25) is provided with a second scale (43) that matches the slide (28).

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