Concentricity measuring instrument for inner ring and outer ring of bearing and use method of concentricity measuring instrument

Abstract

The invention discloses a bearing inner and outer ring concentricity measuring instrument and a use method, the bearing inner and outer ring concentricity measuring instrument comprises a workbench, the top of the workbench is provided with a circular slide rail, the circular slide rail is slidably provided with a sliding platform, the sliding platform is provided with a support frame, and the support frame is horizontally provided with a transverse lead screw module; the sliding end of the transverse lead screw module is connected with a bidirectional lead screw module, and the two sliding ends of the bidirectional lead screw module are each provided with a liftable detection contact sensor, S1, a bearing to be measured is placed in the center of a clamping table, and the bearing is clamped; s2, a servo motor A, a servo motor B and a lifting air cylinder are driven, so that the two detection contact sensors are attached to the outer ring surface and the inner ring surface of the bearing respectively; by designing the adjustable three-jaw fixing clamp, the device can be suitable for fixing bearings of different sizes, and by designing the detection contact sensor capable of being adjusted in multiple dimensions, the device can be suitable for measuring the concentricity of inner and outer rings of the bearings of different sizes in a large range.

Description

Technical Field

[0001] The invention belongs to the technical field of bearing inner and outer ring concentricity measurement, and particularly relates to a bearing inner and outer ring concentricity measuring instrument and a use method. Background Art

[0002] Bearings are an important component in contemporary mechanical equipment. Their main function is to support mechanical rotating bodies, reduce the friction coefficient during their movement, and ensure their rotation accuracy. In the production and processing of bearings, in order to ensure the production quality of bearings, the concentricity measurement of the inner and outer rings of the bearings is one of the traditional Chinese medicine inspection items. The concentricity of the inner and outer rings of the bearings needs to be measured during the processing. Generally, when measuring, the parts need to be sent to the roundness instrument in the inspection room for inspection.

[0003] Existing testing instruments are limited in the size of bearings they are suitable for, which means that larger bearings cannot be tested using roundness instruments. Summary of the invention

[0004] The object of the present invention is to provide a bearing inner and outer ring concentricity measuring instrument and a use method to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a bearing inner and outer ring concentricity measuring instrument, comprising a workbench, a circular slide rail is arranged on the top of the workbench, a sliding platform is slidably arranged on the circular slide rail, the sliding platform performs circular motion along the circular slide rail through a gear driving member, a support frame is arranged on the sliding platform, a transverse screw module is horizontally arranged on the support frame, a sliding end of the transverse screw module is connected to a bidirectional screw module, two sliding ends of the bidirectional screw module are respectively provided with a liftable detection contact sensor, and the two detection contact sensors are symmetrically distributed, an adjustable three-jaw clamp concentric with the circular slide rail is arranged on the top of the workbench, an extension table is arranged on one side of the workbench, and a computer is arranged on the extension table.

[0006] Preferably, the transverse screw module includes a mounting base A horizontally fixedly mounted on the upper end of the support frame, a threaded shaft rotatably mounted in the mounting base A, a screw slider A sleeved on the threaded shaft, and a servo motor A for driving the threaded shaft to rotate. The servo motor A is fixedly mounted on the support frame, and the output end of the servo motor A is transmission-connected to one end of the threaded shaft through a reduction gear box. The forward and reverse rotation of the threaded shaft can drive the screw slider A to reciprocate horizontally on the threaded shaft.

[0007] Preferably, the bidirectional screw module includes a mounting base B fixedly connected to the screw slider A, a bidirectional threaded shaft rotatably mounted on the inner side of the mounting base B, two screw sliders B symmetrically sleeved on the bidirectional threaded shaft, and a servo motor B fixedly mounted at one end of the outer side of the mounting base B. The servo motor B is transmission-connected to the bidirectional threaded shaft through a reduction gear box, and drives the two screw sliders B to approach or move away from each other through the forward and reverse rotation of the bidirectional threaded shaft.

[0008] Preferably, a lifting cylinder is provided between each of the detection contact sensors and the corresponding lead screw slider B, the detection contact sensor is installed at the telescopic end of the lifting cylinder, and the other end of the lifting cylinder is fixedly connected to the corresponding lead screw slider B.

[0009] Preferably, the gear driving member includes a fixed gear ring arranged outside the circular slide rail, a driving motor arranged in the sliding platform, and a driving gear fixedly installed at the output end of the driving motor, and the driving gear is meshed with the fixed gear ring.

[0010] Preferably, the three-jaw clamp includes a clamping table located on the inner side of the circular slide rail, and the clamping table is fixedly installed on the top of the workbench, the center of the clamping table coincides with the center of the circular slide rail, and a plurality of guide grooves are evenly distributed on the circumference of the clamping table, and a three-jaw chuck that can slide along the guide groove is provided on the clamping table, and a connecting rod is provided at the bottom end of each of the three-jaw chucks, and the bottom end of the three-jaw chuck is rotatably connected to the connecting rod, and an adjusting cylinder for synchronously pushing a plurality of connecting rods is provided inside the workbench, and a connecting seat is fixedly installed at the top telescopic end of the adjusting cylinder, and the bottom end of the connecting rod extends into the workbench, and the bottom end of the connecting rod is rotatably connected to the connecting seat.

[0011] Preferably, the detection contact sensor and the computer are both provided with a Bluetooth data module, and the detection contact sensor is also provided with a controller for controlling data transmission.

[0012] A method for using a bearing inner and outer ring concentricity measuring instrument, S1: firstly, start the adjusting cylinder to lift up the connecting seat, and push the corresponding three-jaw chuck to slide horizontally along the guide groove through the connecting rod, so that the spacing between multiple three-jaw chucks is maximized;

[0013] S2: Place the bearing to be measured at the center of the clamping table, start the regulating cylinder to pull the connecting rod downward, so that the three-jaw chuck is retracted, the bearing is clamped, and kept in the center position;

[0014] S3: according to the size of the bearing to be treated, the servo motor A and the servo motor B and the lifting cylinder are driven so that the two detection contact sensors are respectively attached to the outer ring surface and the inner ring surface of the bearing;

[0015] S4: Start the drive motor. Through the meshing of the driving gear and the fixed gear ring, the sliding platform moves in a circular motion along the circular slide rail, causing the two detection contact sensors to move in a circular motion while sticking to the inner and outer rings of the bearing, measuring the inner and outer rings. The measured data is transmitted to the computer through the Bluetooth data module for display, and the data is saved and statistically analyzed. Products that meet the parameter requirements are qualified products, and those that do not meet the requirements are unqualified products.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] By designing an adjustable three-jaw fixing fixture, it can be applied to fix bearings of different sizes. And a detection contact sensor that can be adjusted in multiple dimensions is designed, which can be applied to measure the concentricity of the inner and outer rings of bearings of different sizes within a large range.

[0018] Moreover, the detection contact sensor transmits the detected data to the computer through the Bluetooth transmission module. While the computer displays the detected data, it also performs preservation and statistical analysis, so that the quality qualification rate of a batch of bearings can be directly obtained. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a front view structural schematic diagram of the present invention;

[0020] Figure 2 is a top view structural schematic diagram of the workbench of the present invention;

[0021] Figure 3 is a structural schematic diagram of the adjusting mechanism of the present invention;

[0022] Figure 4 is a sectional view structural schematic diagram of the workbench of the present invention;

[0023] Figure 5 is a structural schematic diagram of the adjusting link installation of the three-jaw fixing fixture of the present invention.

[0024] In the figure: 1, workbench; 2, circular slide rail; 3, computer; 4, extension table; 5, sliding platform; 6, fixed gear ring; 7, driving gear; 8, support frame; 9, servo motor A; 10, mounting seat A; 11, mounting seat B; 12, servo motor B; 13, lifting cylinder; 14, detection contact sensor; 15, clamping table; 16, three-jaw chuck; 17, guiding chute; 18, drive motor; 19, threaded rotating shaft; 20, lead screw slider A; 21, double-threaded rotating shaft; 22, lead screw slider B; 23, adjusting cylinder; 24, connecting rod; 25, connecting seat. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0025] 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 described embodiments 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 creative work are within the scope of protection of the present invention.

[0026] Example 1

[0027] See also Figure 1 and Figure 5 The present invention provides a technical solution: a bearing inner and outer ring concentricity measuring instrument, comprising a workbench 1, a circular slide rail 2 is arranged on the top of the workbench 1, a sliding platform 5 is slidably arranged on the circular slide rail 2, the sliding platform 5 performs circular motion along the circular slide rail 2 through a gear driving member, a support frame 8 is arranged on the sliding platform 5, a transverse screw module is horizontally arranged on the support frame 8, a sliding end of the transverse screw module is connected to a bidirectional screw module, two sliding ends on the bidirectional screw module are respectively provided with a liftable detection contact sensor 14, and the two detection contact sensors 14 are symmetrically distributed, an adjustable three-claw clamp concentric with the circular slide rail 2 is arranged on the top of the workbench 1, an extension table 4 is arranged on one side of the workbench 1, and a computer 3 is arranged on the extension table 4. In this embodiment, preferably, the transverse screw module includes a mounting base A10 horizontally fixedly installed on the upper end of the support frame 8, a threaded shaft 19 rotatably installed in the mounting base A10, a screw slider A20 sleeved on the threaded shaft 19, and a servo motor A9 for driving the threaded shaft 19 to rotate. The servo motor A9 is fixedly installed on the support frame 8, and the output end of the servo motor A9 is transmission-connected to one end of the threaded shaft 19 through a reduction gear box. The forward and reverse rotation of the threaded shaft 19 can drive the screw slider A20 to reciprocate horizontally on the threaded shaft 19. In this embodiment, preferably, the bidirectional screw module includes a mounting base B11 fixedly connected to the screw slider A20, a bidirectional threaded shaft 21 rotatably mounted on the inner side of the mounting base B11, two screw sliders B22 symmetrically sleeved on the bidirectional threaded shaft 21, and a servo motor B12 fixedly mounted at one end of the outer side of the mounting base B11. The servo motor B12 is transmission-connected to the bidirectional threaded shaft 21 through a reduction gear box, and drives the two screw sliders B22 to approach or move away from each other through the forward and reverse rotation of the bidirectional threaded shaft 21.

[0028] In this embodiment, preferably, a lifting cylinder 13 is provided between each detection contact sensor 14 and the corresponding lead screw slider B22. The telescopic end of the lifting cylinder 13 is equipped with the detection contact sensor 14, and the other end of the lifting cylinder 13 is fixedly connected to the corresponding lead screw slider B22. The detection contact sensor 14 can be driven by the lifting cylinder 13 to perform lifting adjustment. In this embodiment, preferably, the gear driving member includes a fixed gear ring 6 provided outside the circular slide rail 2, a driving motor 18 provided inside the sliding platform 5, and a driving gear 7 fixedly installed at the output end of the driving motor 18. The driving gear 7 meshes with the fixed gear ring 6 to ensure that the sliding platform 5 can perform circular motion. In this embodiment, preferably, the three-jaw chuck includes a clamping table 15 located inside the circular slide rail 2, and the clamping table 15 is fixedly installed on the top of the workbench 1. The center of the clamping table 15 coincides with the center of the circular slide rail 2. A plurality of guiding chutes 17 are evenly distributed on the circumference of the clamping table 15. A three-jaw chuck 16 that can slide along the guiding chute 17 is provided on the clamping table 15. A connecting rod 24 is provided at the bottom end of each three-jaw chuck 16, and the bottom end of the three-jaw chuck 16 is rotatably connected to the connecting rod 24. An adjusting cylinder 23 for synchronously pushing a plurality of connecting rods 24 is provided inside the workbench 1. The top telescopic end of the adjusting cylinder 23 is fixedly installed with a connecting seat 25. The bottom end of the connecting rod 24 extends into the workbench 1, and the bottom end of the connecting rod 24 is rotatably connected to the connecting seat 25 to ensure that the plurality of three-jaw chucks 16 can be opened and closed synchronously and are suitable for clamping bearings of different sizes. In this embodiment, preferably, both the detection contact sensor 14 and the computer 3 are provided with Bluetooth data modules, and a controller for controlling data transmission is also provided inside the detection contact sensor 14.

[0029] A method for using a concentricity measuring instrument for the inner and outer rings of a bearing, S1: First, start the adjusting cylinder 23 to lift the connecting seat 25, and push the corresponding three-jaw chuck 16 to slide horizontally along the guiding chute 17 through the connecting rod 24, so that the distance between the plurality of three-jaw chucks 16 is maximized;

[0030] S2: Place the bearing to be measured at the center of the clamping table 15, start the adjusting cylinder 23 to pull down the connecting rod 24, so that the three-jaw chuck 16 retracts to clamp the bearing and keep it in the center position;

[0031] S3: Drive the servo motor A9, the servo motor B12 and the lifting cylinder 13 according to the size of the bearing to be measured, so that the two detection contact sensors 14 are respectively attached to the outer ring surface and the inner ring surface of the bearing;

[0032] S4: Start the drive motor 18. Through the meshing of the driving gear 7 and the fixed gear ring 6, the sliding platform 5 moves along the circumference of the circular slide rail 2, causing the two detection contact sensors 14 to move in a circle along the inner and outer rings of the bearing, measuring the inner and outer rings. The measured data is transmitted to the computer 3 through the Bluetooth data module and displayed, and the data is saved and statistically analyzed. Products that meet the parameter requirements are qualified products, and those that do not meet the requirements are unqualified products.

[0033] Although the embodiments of the present invention have been shown and described, see the above detailed description. For those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A concentricity measuring instrument for the inner and outer rings of a bearing, comprising a workbench (1), characterized in that: A circular slide rail (2) is provided at the top of the workbench (1). A sliding platform (5) is slidably arranged on the circular slide rail (2). The sliding platform (5) performs circular motion along the circular slide rail (2) through a gear driving member. A support frame (8) is arranged on the sliding platform (5). A horizontal lead screw module is horizontally arranged on the support frame (8). The sliding end of the horizontal lead screw module is connected with a bidirectional lead screw module. Two slidable detection contact sensors (14) that can be lifted are respectively arranged at the two sliding ends of the bidirectional lead screw module, and the two detection contact sensors (14) are symmetrically distributed. An adjustable three-jaw chuck concentric with the circular slide rail (2) is arranged at the top of the workbench (1). An extension table (4) is arranged on one side of the workbench (1). A computer (3) is arranged on the extension table (4).

2. The concentricity measuring instrument for the inner and outer rings of a bearing according to claim 1, wherein: The horizontal lead screw module includes a mounting seat A (10) fixedly installed horizontally at the upper end of the support frame (8), a threaded rotating shaft (19) rotatably installed in the mounting seat A (10), a lead screw slider A (20) sleeved on the threaded rotating shaft (19), and a servo motor A (9) for driving the threaded rotating shaft (19) to rotate. The servo motor A (9) is fixedly installed on the support frame (8), and the output end of the servo motor A (9) is in transmission connection with one end of the threaded rotating shaft (19) through a speed reducer. By the forward and reverse rotation of the threaded rotating shaft (19), the lead screw slider A (20) can be driven to perform horizontal reciprocating motion on the threaded rotating shaft (19).

3. A concentricity measuring instrument for the inner and outer rings of a bearing according to claim 2, characterized in that: The bidirectional lead screw module includes a mounting seat B (11) fixedly connected with the lead screw slider A (20), a bidirectional threaded rotating shaft (21) rotatably installed inside the mounting seat B (11), two lead screw sliders B (22) symmetrically sleeved on the bidirectional threaded rotating shaft (21), and a servo motor B (12) fixedly installed at one end outside the mounting seat B (11). The servo motor B (12) is in transmission connection with the bidirectional threaded rotating shaft (21) through a speed reducer, and by the forward and reverse rotation of the bidirectional threaded rotating shaft (21), the two lead screw sliders B (22) are driven to approach or move away from each other.

4. The concentricity measuring instrument for the inner and outer rings of a bearing according to claim 3, characterized in that: An elevating cylinder (13) is arranged between each detection contact sensor (14) and the corresponding lead screw slider B (22). The telescopic end of the elevating cylinder (13) is installed with the detection contact sensor (14), and the other end of the elevating cylinder (13) is fixedly connected with the corresponding lead screw slider B (22).

5. A concentricity measuring instrument for the inner and outer rings of a bearing according to claim 1, characterized in that: The gear driving member includes a fixed gear ring (6) arranged outside the circular slide rail (2), a driving motor (18) arranged inside the sliding platform (5), and a driving gear (7) fixedly installed at the output end of the driving motor (18). The driving gear (7) meshes with the fixed gear ring (6).

6. The concentricity measuring instrument for the inner and outer rings of a bearing according to claim 1, wherein: The three-jaw fixture includes a clamping table (15) located inside the circular slide rail (2), and the clamping table (15) is fixedly installed on the top of the workbench (1). The center of the clamping table (15) coincides with the center of the circular slide rail (2). A plurality of guiding chutes (17) are evenly distributed in a circumferential manner on the clamping table (15). A three-jaw chuck (16) that can slide along the guiding chute (17) is arranged on the clamping table (15). A connecting rod (24) is arranged at the bottom end of each three-jaw chuck (16), and the bottom end of the three-jaw chuck (16) is rotatably connected to the connecting rod (24). An adjusting cylinder (23) for synchronously pushing a plurality of connecting rods (24) is arranged inside the workbench (1). A connecting seat (25) is fixedly installed at the top telescopic end of the adjusting cylinder (23). The bottom end of the connecting rod (24) extends into the workbench (1), and the bottom end of the connecting rod (24) is rotatably connected to the connecting seat (25).

7. The concentricity measuring instrument for the inner and outer rings of a bearing according to claim 1, wherein: Both the detection contact sensor (14) and the computer (3) are provided with Bluetooth data modules, and a controller for controlling data transmission is further arranged inside the detection contact sensor (14).

8. A method for using a concentricity measuring instrument for the inner and outer rings of a bearing according to any one of claims 1-7, characterized in that: S1: First, start the adjusting cylinder (23) to lift the connecting seat (25), and push the corresponding three-jaw chuck (16) to slide horizontally along the guiding chute (17) through the connecting rod (24), so that the distance between the plurality of three-jaw chucks (16) is maximized; S2: Place the bearing to be measured at the center of the clamping table (15), start the adjusting cylinder (23) to pull the connecting rod (24) downward, so that the three-jaw chuck (16) retracts, clamp the bearing, and keep it in the central position; S3: Drive the servo motor A (9), the servo motor B (12) and the lifting cylinder (13) according to the size of the bearing to be measured, so that the two detection contact sensors (14) are respectively attached to the outer ring surface and the inner ring surface of the bearing; S4: Start the drive motor (18), and through the meshing of the driving gear (7) and the fixed gear ring (6), make the sliding platform (5) move circumferentially along the circular slide rail (2), so that the two detection contact sensors (14) are attached to the inner and outer rings of the bearing to perform circumferential movement, measure the inner and outer rings. The measured data is transmitted to the computer (3) through the Bluetooth data module and displayed, and the data is saved and statistically analyzed. The products that meet the parameter requirements are qualified products, and those that do not meet are unqualified products.

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