Automatic aligning mechanism

Abstract

The utility model discloses an automatic aligning mechanism which comprises a box body, the interior of the box body is fixedly connected with a machine base of a hollow structure, the interior of the box body is fixedly connected with two machine frames of a hollow structure, the interiors of the two machine frames are both rotationally connected with two one-way lead screws, the interior of the machine base is rotationally connected with a shaft body of a hollow structure, and the interior of the shaft body is fixedly connected with the machine base. The outer walls of the two one-way lead screws are fixedly sleeved with first synchronous belt wheels, the outer wall of the shaft body is fixedly sleeved with two second synchronous belt wheels, and two rubber synchronous belts are arranged between the two second synchronous belt wheels and the two first synchronous belt wheels in a transmission and sleeving mode. According to the utility model, through the arrangement of the round seat, the second servo motor, the bidirectional screw rod, the T-shaped block, the first V-shaped plate, the positioning rod and the second V-shaped plate, the positioning of the workpiece is ensured, the unstable condition is prevented, and through the V-shaped structure of the device, the shaft-type detected workpieces with different thicknesses are positioned, and the shaft-type detected workpieces are ensured to be located at the center at the same time.

Description

Technical Field

[0001] The utility model relates to the technical field of measuring equipment, in particular to an automatic centering mechanism. Background Art

[0002] Opto-mechatronic measurement technology is a new, integrated approach that combines optics, mechanics, and electronics. It's primarily used to measure the shape, position, and posture of large workpieces and challenging curved surfaces. In opto-mechatronics, due to machining and assembly errors in shaft components, perpendicularity errors can occur between the optical axis and pitch axis, between the pitch axis and azimuth axis, and between the azimuth axis and the base. These errors can lead to deviations in measurement results.

[0003] In the prior art, after the shaft workpiece is clamped and fixed during the measurement process, if the shaft workpiece is positioned eccentrically, it is easy to cause measurement errors in the symmetry and concentricity of the shaft workpiece during measurement. Therefore, we propose an automatic centering mechanism to solve the above problem. Utility Model Content

[0004] The purpose of the utility model is to solve the shortcomings of the prior art and to propose an automatic centering mechanism.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0006] The cam is fixedly provided with a toothed connecting strip which is cooperatively connected with the toothed connecting strip of the present invention, and the toothed connecting strip is connected with the toothed connecting strip of the present invention.

[0007] Preferably, the centering mechanism includes a bidirectional screw, one end of which is rotatably connected to the inner wall of the round seat, and a second servo motor is fixedly connected to the outer wall of the round seat. The output shaft of the second servo motor passes through the outer wall of the round seat and is fixedly connected to the other end of the bidirectional screw. The outer wall thread sleeve of the bidirectional screw is provided with two T-blocks. By setting up the centering mechanism, the bidirectional screw drives the two T-blocks to move relative to each other, which helps in subsequent positioning.

[0008] Preferably, the clamping mechanism includes two first V-shaped plates, the tops of the two T-blocks are fixedly connected to the bottoms of the two first V-shaped plates respectively, two positioning holes are provided on the tops of the two first V-shaped plates, the inner walls of the two positioning holes are slidably connected with positioning rods, and the tops of the two positioning rods are fixedly connected to the same second V-shaped plate. By setting up a clamping mechanism, the measured shaft workpieces of different thicknesses can be positioned, and the axis center is located at the center between the two first V-shaped plates.

[0009] Preferably, a notch is provided between the machine base and the two frames, and the notch is provided for assembling the two rubber synchronous belts and the two first synchronous pulleys.

[0010] Preferably, the outer walls of the two racks are provided with vertical slots, the inner walls of the two vertical slots are slidably connected to the outer walls of the two rectangular moving blocks respectively, and the vertical slots are provided to assist the two rectangular moving blocks to move up and down.

[0011] Preferably, the assembly plate is slidably connected to the frame.

[0012] Preferably, a long groove is provided on the top of the round seat, and the inner wall of the long groove is slidably connected to the outer walls of the two T-blocks, so that the linear movement of the two T-blocks is assisted by the provision of the long groove.

[0013] Compared with the prior art, the advantages of the present invention are:

[0014] This solution drives the laser ranging sensor to move up and down and drives the rotation of the shaft workpiece to facilitate the measurement of the outer surface of the shaft workpiece by setting a one-way screw, a shaft body, a first synchronous pulley, a second synchronous pulley, a rubber synchronous belt, a first servo motor, a rectangular moving block and an assembly plate;

[0015] By setting up a round seat, a second servo motor, a bidirectional screw, a T-block, a first V-plate, a positioning rod and a second V-plate, the positioning of the workpiece is ensured to prevent instability. Through its own V-shaped structure, it can position the shaft workpieces of different thicknesses while ensuring that the shaft workpieces are located in the center. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solution of the present invention, the following is a brief introduction to the drawings required for use in the description of the specific implementation methods. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0017] Figure 1 This is a schematic diagram of the three-dimensional structure of an automatic centering mechanism proposed in the present invention;

[0018] Figure 2 This is a schematic cross-sectional view of an automatic centering mechanism proposed in the present invention;

[0019] Figure 3 This is an automatic centering mechanism proposed by the utility model Figure 2 A schematic diagram of the enlarged structure of part A in FIG.

[0020] In the figure: 1. Box; 2. Machine base; 3. Frame; 4. One-way screw; 5. Shaft; 6. First synchronous pulley; 7. Second synchronous pulley; 8. Rubber synchronous belt; 9. First servo motor; 10. Rectangular moving block; 11. Assembly plate; 12. Laser ranging sensor; 13. Magnetoresistive sensor; 14. Round seat; 15. Second servo motor; 16. Two-way screw; 17. T-block; 18. First V-shaped plate; 19. Positioning rod; 20. Second V-shaped plate. DETAILED DESCRIPTION

[0021] The following will be combined with the accompanying 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.

[0022] Depend on Figure 1-Figure 3 As shown, it relates to an automatic centering mechanism, including a box body 1, a hollow structure base 2 is fixedly connected to the inside of the box body 1, two hollow structure frames 3 are fixedly connected to the inside of the box body 1, a slot is opened between the machine base 2 and the two frames 3, the inside of the two frames 3 are rotatably connected to two one-way screws 4, the inside of the machine base 2 is rotatably connected to a hollow structure shaft 5, the inside of the shaft 5 is installed with an existing electric slip ring for connecting existing cables, the tops of the two one-way screws 4 are fixedly sleeved with existing bearings, the outer rings of the bearings are fixedly connected to the inner wall of the frame 3, the bottom of the shaft 5 is fixedly sleeved with an existing bearing, and the outer ring of the bearings is fixedly connected to the inner wall of the machine base 2.

[0023] The outer walls of the two one-way screw rods 4 are fixedly sleeved with a first synchronous pulley 6, the outer wall fixed sleeve of the shaft body 5 is provided with two second synchronous pulleys 7, and the transmission sleeves between the two second synchronous pulleys 7 and the two first synchronous pulleys 6 are provided with two rubber synchronous belts 8. The interior of one of the frames 3 is fixedly connected to a first servo motor 9, and the top of the output shaft of the first servo motor 9 is fixedly connected to the bottom of one of the one-way screw rods 4. The operation of the first servo motor 9 can drive one of the one-way screw rods 4 to rotate.

[0024] The outer walls of the two one-way screw rods 4 are threaded with rectangular moving blocks 10, and the outer walls of the two frames 3 are provided with vertical grooves. The inner walls of the two vertical grooves are slidingly connected to the outer walls of the two rectangular moving blocks 10 respectively. The outer walls of the two rectangular moving blocks 10 are fixedly connected with an assembly plate 11, and the assembly plate 11 is slidingly connected to the frame 3. The outer walls of the two assembly plates 11 are fixedly connected with a laser ranging sensor 12 (HG-F13A-AP). The assembly plate 11 assists the laser ranging sensor 12 (HG-F13A-AP) to move up and down stably, and the laser ranging sensor 12 (HG-F13A-AP) determines the target distance by measuring the time required for the laser to travel back and forth to the target, thereby realizing the measurement of the verticality, concentricity, parallelism and symmetry of the shaft-type workpiece.

[0025] A magnetoresistive sensor 13 (KMT32B-TD) is fixedly connected to the interior of the box 1. The magnetoresistive sensor 13 (KMT32B-TD) uses the magnetoresistance effect of the material to measure changes in magnetic field strength. When the object to be measured is eccentric, the magnetic field received by the sensor changes, and the output electrical signal also changes accordingly, thereby measuring the eccentricity of the object to be measured.

[0026] The top of the shaft 5 passes through the inner wall of the machine base 2 and is fixedly connected to a hollow round seat 14. A centering mechanism is provided inside the round seat 14. The centering mechanism includes a bidirectional screw rod 16. One end of the bidirectional screw rod 16 is rotatably connected to the inner wall of the round seat 14. A second servo motor 15 is fixedly connected to the outer wall of the round seat 14. The output shaft of the second servo motor 15 passes through the outer wall of the round seat 14 and is fixedly connected to the other end of the bidirectional screw rod 16. Two T-blocks 17 are threadedly sleeved on the outer wall of the bidirectional screw rod 16. A long groove is provided on the top of the round seat 14. The inner wall of the long groove is slidably connected to the outer walls of the two T-blocks 17. The operation of the second servo motor 15 drives the bidirectional screw rod 16 to rotate, and the rotation of the bidirectional screw rod 16 drives the two T-blocks 17 to move relative to each other along the long groove.

[0027] The top of the round seat 14 is provided with a clamping mechanism, the clamping mechanism comprises two first V-shaped plates 18, the top of the two T-shaped blocks 17 is respectively fixedly connected with the bottom of the two first V-shaped plates 18, two positioning holes are formed in the top of the two first V-shaped plates 18, a positioning rod 19 is slidably connected with the inner wall of the two positioning holes, the top of the two positioning rods 19 is fixedly connected with a second V-shaped plate 20, the first V-shaped plate 18 and the second V-shaped plate 20 are clamped through the V-shaped structure, and the first V-shaped plate 18 and the second V-shaped plate 20 can be positioned on shaft workpieces with different thicknesses.

[0028] Working principle: in use, the shaft workpiece is placed between the two first V-shaped plates 18, and according to the length of the workpiece, the second V-shaped plate 20 is overlapped on the first V-shaped plate 18 by sliding the positioning rod 19 into the positioning hole, so as to ensure the positioning of the workpiece and prevent instability, the second servo motor 15 drives the bidirectional screw rod 16 to rotate, the bidirectional screw rod 16 drives the two T-shaped blocks 17 to move relatively, so that the two first V-shaped plates 18 and the two second V-shaped plates 20 move relatively, the shaft workpiece is clamped and positioned, the shaft workpiece is ensured to be located at the center, and the magnetic resistance sensor 13 detects the top shaft center position of the shaft workpiece, so as to ensure that the shaft workpiece is located at the center, facilitating subsequent measurement, the first servo motor 9 drives one of the unidirectional screw rods 4 to rotate, the unidirectional screw rod 4 drives one of the first synchronous pulleys 6 to rotate, and through the transmission of the rubber synchronous belt 8, the second synchronous pulley 7 is driven to rotate, the second synchronous pulley 7 drives the shaft body 5 to rotate, so that the other second synchronous pulley 7 and the first synchronous pulley 6 rotate through the other rubber synchronous belt 8, the rotation of the two unidirectional screw rods 4 and the shaft body 5 is realized, and the rotation of the shaft body 5 drives the round seat 14 to rotate, the rotation of the two unidirectional screw rods 4 drives the two rectangular moving blocks 10 to rise, the rising of the two rectangular moving blocks 10 drives the two assembly plates 11 and the two laser ranging sensors 12 to rise, the laser ranging sensors 12 are located on both sides of the shaft workpiece, and the outer surface of the shaft workpiece is measured, and when the first servo motor 9 reverses, the two rectangular moving blocks 10 are driven to descend, so as to realize back and forth measurement, and the two ends of the shaft workpiece are exchanged and clamped subsequently, and the measurement is re-performed.

[0029] The standard parts used in the utility model can be purchased from the market, the special-shaped parts can be ordered according to the description and the drawings, the specific connection mode of each part adopts the conventional means such as bolts, rivets and welding in the prior art, the machinery, parts and equipment adopt conventional models in the prior art, the circuit connection adopts the conventional connection mode in the prior art, and details are not described herein, and the components known by the person skilled in the art are known or obtained through conventional experimental methods.

[0030] Although the embodiments of the present application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. An automatic centering mechanism, comprising a housing (1), characterized in that: The interior of the box (1) is fixedly connected to a machine base (2) with a hollow structure, the interior of the box (1) is fixedly connected to two machine frames (3) with a hollow structure, the interiors of the two machine frames (3) are both rotatably connected to two one-way screw rods (4), the interior of the machine base (2) is rotatably connected to a shaft body (5) with a hollow structure, the outer walls of the two one-way screw rods (4) are both fixedly sleeved with a first synchronous pulley (6), the outer wall of the shaft body (5) is fixedly sleeved with two second synchronous pulleys (7), and the transmission sleeves between the two second synchronous pulleys (7) and the two first synchronous pulleys (6) are provided with two rubber synchronous belts (8), and the interior of one of the frames (3) is fixedly connected to a first servo motor (9), the top of the output shaft of the first servo motor (9) is fixedly connected to the bottom of one of the one-way screws (4), the outer walls of the two one-way screws (4) are threaded with rectangular moving blocks (10), the outer walls of the two rectangular moving blocks (10) are fixedly connected to the assembly plates (11), the outer walls of the two assembly plates (11) are fixedly connected to the laser ranging sensors (12), the interior of the box (1) is fixedly connected to the magnetoresistive sensor (13), the top of the shaft (5) passes through the inner wall of the machine base (2) and is fixedly connected to a hollow round seat (14), the interior of the round seat (14) is provided with a centering mechanism, and the top of the round seat (14) is provided with a clamping mechanism.

2. The automatic centering mechanism according to claim 1, characterized in that: The centering mechanism includes a bidirectional screw (16), one end of which is rotatably connected to the inner wall of the round seat (14), and a second servo motor (15) is fixedly connected to the outer wall of the round seat (14). The output shaft of the second servo motor (15) passes through the outer wall of the round seat (14) and is fixedly connected to the other end of the bidirectional screw (16). The outer wall of the bidirectional screw (16) is threadedly sleeved with two T-blocks (17).

3. The automatic centering mechanism according to claim 2, characterized in that: The clamping mechanism comprises two first V-shaped plates (18), the tops of the two T-shaped blocks (17) are fixedly connected to the bottoms of the two first V-shaped plates (18), the tops of the two first V-shaped plates (18) are respectively provided with two positioning holes, the inner walls of the two positioning holes are slidably connected to positioning rods (19), and the tops of the two positioning rods (19) are fixedly connected to the same second V-shaped plate (20).

4. The automatic centering mechanism according to claim 1, characterized in that: A slot is provided between the machine base (2) and the two machine frames (3).

5. The automatic centering mechanism according to claim 1, characterized in that: The outer walls of the two frames (3) are each provided with a vertical slot, and the inner walls of the two vertical slots are respectively slidably connected to the outer walls of the two rectangular moving blocks (10).

6. The automatic centering mechanism according to claim 1, characterized in that: The assembly plate (11) is slidably connected to the frame (3).

7. The automatic centering mechanism according to claim 2, characterized in that: A long groove is provided on the top of the round seat (14), and the inner wall of the long groove is slidably connected to the outer walls of the two T-shaped blocks (17).

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