Rotor core press-contact thickness gauge

Abstract

The utility model discloses a kind of rotor core pressurization contact type thickness gauge, comprising: rack, stand, driving mechanism, pressurizing rod, floating pressure column, link block and contact displacement sensor, the rack is equipped with the workpiece lower pressing area suitable for placing workpiece;The stand is vertically installed on the rack;The driving mechanism is installed on the stand, and the driving mechanism is equipped with the driving output end suitable for up and down movement;The pressurizing rod is vertically connected on the driving output end, and the lower end of the pressurizing rod is equipped with guide sliding slot;The floating pressure column is slidably arranged in the guide sliding slot, and the lower end of the floating pressure column is suitable for contacting workpiece surface;The link block is fixed on the upper end of the floating pressure column;The contact displacement sensor is fixedly installed on the stand.The utility model can realize stable and reliable thickness measurement, effectively eliminate the influence of pressure transmission on measurement accuracy.

Description

Technical Field

[0001] This utility model relates to a rotor core pressurized contact thickness measuring machine. Background Technology

[0002] The rotor core is the core component of the motor, typically made of multiple stacked silicon steel sheets. During the production process, due to the gaps between the silicon steel sheets, direct measurement will produce a large error. Therefore, it is necessary to apply a certain pressure to the rotor core before thickness measurement to ensure measurement accuracy and product quality.

[0003] Currently, rotor core thickness is typically measured using a pressure testing device. A search of existing technologies revealed a Chinese patent (CN218633629U) that discloses a rotor pressure testing device. This device applies pressure to the rotor using upper and lower pressure modules, and works in conjunction with a thickness measuring module for measurement.

[0004] However, existing technologies use indirect measurement methods, which infer the workpiece thickness by measuring the distance between the pressure plate and the base after the pressure plate is pressed down. This measurement method cannot directly obtain the true thickness data of the workpiece surface. The measurement accuracy is affected by various factors such as the workpiece placement position and the wear of the base reference surface, resulting in a large accumulation of errors, which makes it difficult to meet the requirements of high-precision measurement. Summary of the Invention

[0005] The technical problem to be solved by this utility model is to overcome the defects of the prior art and provide a rotor core pressurized contact thickness measuring machine, which can achieve stable and reliable thickness measurement and effectively eliminate the influence of pressure transmission on measurement accuracy.

[0006] To solve the above-mentioned technical problems, the technical solution of this utility model is: a rotor core pressurized contact thickness measuring machine, comprising:

[0007] A frame, wherein the frame is provided with a workpiece pressing area suitable for placing workpieces;

[0008] A vertical frame is mounted on the machine frame.

[0009] A drive mechanism is mounted on the upright frame and has a drive output end suitable for vertical movement.

[0010] A pressure rod is vertically connected to the drive output end, and a guide groove is provided at the lower end of the pressure rod;

[0011] A floating pressure column is slidably disposed in the guide groove, and the lower end of the floating pressure column is adapted to contact the surface of the workpiece.

[0012] A connecting pressure block is fixed to the upper end of the floating pressure column;

[0013] A contact displacement sensor is fixedly mounted on the upright frame, and the measuring contact of the contact displacement sensor abuts against the connecting pressure block;

[0014] When the driving mechanism drives the pressure rod to move downward to abut against the workpiece, the lower end of the floating pressure column is adapted to contact the workpiece surface and then slides upward relative to the pressure rod in the guide groove. The connecting pressure block drives the contact displacement sensor measuring probe to measure the workpiece thickness.

[0015] Furthermore, the drive output end is provided with an external thread, and the upper end of the pressure rod is provided with an internal thread hole that mates with the external thread.

[0016] Furthermore, the rotor core pressurized contact thickness gauge also includes a return mechanism, which includes:

[0017] A return spring, which is sleeved on the floating pressure column;

[0018] The inner wall of the guide groove of the pressure rod is provided with an annular step;

[0019] Wherein, the upper end of the return spring abuts against the annular step;

[0020] The lower end of the floating pressure column is provided with a lower limit ring, and the lower end of the return spring abuts against the lower limit ring. The return spring is adapted to reset the floating pressure column downward.

[0021] Furthermore, the rotor core pressurized contact thickness gauge also includes a workpiece handling mechanism, which includes:

[0022] A lifting mechanism is mounted on the frame and has a lifting end suitable for vertical movement.

[0023] A rotating mechanism is provided on the lifting end, and the rotating mechanism is provided with a rotatable rotating platform;

[0024] A pair of clamping cylinders are symmetrically arranged at both ends of the rotating platform.

[0025] Furthermore, the rotor core pressurized contact thickness gauge also includes a conveying mechanism, which includes:

[0026] At least one guide rail is horizontally mounted on the frame;

[0027] At least one slider, which is slidably engaged on a corresponding guide rail;

[0028] A support platform is mounted on the slider, and the support platform is provided with positioning protrusions suitable for limiting the workpiece;

[0029] A pushing mechanism is mounted on the frame, and the pushing mechanism is provided with a push rod, which is connected to the support platform;

[0030] The pushing mechanism is adapted to push the slider to move along the guide rail, so that the carrying platform reciprocates between the workpiece pressing area and the workpiece handling mechanism.

[0031] Furthermore, the workpiece pressing area on the frame is provided with an abutment block;

[0032] The support platform is provided with a floating slide, which is vertically movable and installed on the support platform. The floating slide is suitable for placing workpieces, and the bottom of the floating slide is suitable for abutting the abutment block.

[0033] Furthermore, the pushing mechanism is a cylinder.

[0034] Furthermore, there are three contact displacement sensors.

[0035] By adopting the above technical solution, this utility model has the following beneficial effects:

[0036] In this invention, during operation, the workpiece is placed in the workpiece pressing area on the frame. The drive mechanism moves the pressure rod downwards. When the guide groove at the lower end of the pressure rod approaches the workpiece surface, the lower end of the floating pressure column first contacts the workpiece surface. Since the floating pressure column is slidably positioned within the guide groove, it slides upwards relative to the pressure rod. The connecting pressure block fixed at the upper end of the floating pressure column moves upwards accordingly and pushes the measuring contact of the contact displacement sensor. The contact displacement sensor obtains the workpiece thickness data by measuring the displacement of the contact contact. This structural configuration, through the relative sliding of the floating pressure column within the guide groove, achieves separation of pressure application and thickness measurement. The pressure applied by the pressure rod to the workpiece is not transmitted to the measuring contact, eliminating the interference of pressure on the measurement results. This solves the technical problem of pressure affecting measurement accuracy in traditional thickness measurement methods and ensures the reliability of the measurement data.

[0037] In summary, this invention separates pressure application from measurement, eliminating the interference of pressure on measurement, and is suitable for thickness detection of workpieces such as rotor cores. Attached Figure Description

[0038] Figure 1 A three-dimensional structural diagram of the rotor core pressure contact thickness gauge of this utility model. Figure 1 ;

[0039] Figure 2This is a cross-sectional view of the rotor core pressurized contact thickness gauge of this utility model;

[0040] Figure 3 for Figure 2 A magnified view of part A in the middle;

[0041] Figure 4 This is a front view of the workpiece handling mechanism of the rotor core pressurized contact thickness gauge of this utility model;

[0042] Figure 5 A three-dimensional structural diagram of the rotor core pressure contact thickness gauge of this utility model. Figure 2 ;

[0043] Figure 6 for Figure 5 A magnified view of part B in the middle section. Detailed Implementation

[0044] To make the content of this utility model easier to understand, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0045] like Figure 1-6 As shown, a rotor core pressurized contact thickness gauge includes:

[0046] The frame 1 is provided with a workpiece pressing area suitable for placing the workpiece 100;

[0047] Frame 2 is vertically mounted on frame 1;

[0048] Drive mechanism 3 is mounted on the upright frame 2 and has a drive output end suitable for vertical movement.

[0049] The pressure rod 4 is vertically connected to the drive output end, and the lower end of the pressure rod 4 is provided with a guide groove 41;

[0050] The floating pressure column 5 is slidably disposed in the guide groove 41, and the lower end of the floating pressure column 5 is adapted to contact the surface of the workpiece.

[0051] Connecting pressure block 6 is fixed to the upper end of floating pressure column 5;

[0052] The contact displacement sensor 7 is fixedly installed on the stand 2, and the measuring contact 71 of the contact displacement sensor 7 abuts against the connecting pressure block 6.

[0053] When the drive mechanism 3 drives the pressure rod 4 to move downward to abut against the workpiece 100, the lower end of the floating pressure column 5 is suitable for contacting the workpiece surface and then slides upward relative to the pressure rod 4 in the guide groove 41. The connecting pressure block 6 drives the contact displacement sensor 7 to measure the contact 71 to measure the workpiece thickness.

[0054] In this embodiment, as Figure 2-3 As shown, during operation, the workpiece 100 is placed in the workpiece pressing area on the frame 1. The drive mechanism 3 drives the pressure rod 4 downward. When the guide groove 41 at the lower end of the pressure rod 4 approaches the surface of the workpiece 100, the lower end of the floating pressure column 5 first contacts the surface of the workpiece 100. Since the floating pressure column 5 is slidably set in the guide groove 41, the floating pressure column 5 slides upward relative to the pressure rod 4. The connecting pressure block 6 fixed at the upper end of the floating pressure column 5 moves upward and pushes the measuring contact 71 of the contact displacement sensor 7. The contact displacement sensor 7 obtains the thickness data of the workpiece 100 by measuring the displacement of the contact 71. This structural configuration achieves the separation of pressure application and thickness measurement through the relative sliding of the floating pressure column 5 in the guide groove 41.

[0055] Specifically, such as Figure 2 As shown, the drive output end is provided with an external thread, and the upper end of the pressure rod 4 is provided with an internal thread hole 42 that mates with the external thread.

[0056] In this embodiment, the drive output end and the pressure rod 4 are connected in an adjustable fixed manner through a threaded connection. By rotating the pressure rod 4, the initial height position of the pressure rod 4 relative to the drive output end can be adjusted, thereby adapting to the pressure requirements of workpieces with different thicknesses. At the same time, the threaded connection method facilitates the disassembly and replacement of the pressure rod 4.

[0057] The drive mechanism 3 is existing technology; specifically, it can be a combination of a servo motor and a ball screw mechanism. The servo motor serves as the power source, and its output shaft is connected to one end of the ball screw via a coupling. A ball nut is threaded onto the ball screw, and this ball nut is fixedly connected to the drive output end.

[0058] During operation, the servo motor drives the ball screw to rotate synchronously through the coupling. Since there is a guide mechanism, such as a guide rail slider, between the ball nut and the fixed parts such as the frame or stand to limit its rotation, the rotational motion of the screw is converted into the linear motion of the ball nut through the threaded pair, thereby driving the drive output end fixed to it to move up and down stably. In other embodiments, the drive mechanism 3 can also be a hydraulic cylinder or a pneumatic cylinder.

[0059] Specifically, such as Figure 3 As shown, the rotor core pressurized contact thickness gauge also includes a return mechanism, which includes:

[0060] Return spring 81, which is sleeved on floating pressure column 5;

[0061] The inner wall of the guide groove 41 of the pressure rod 4 is provided with an annular step;

[0062] The upper end of the return spring 81 abuts against the annular step;

[0063] The lower end of the floating pressure column 5 is provided with a lower limit ring 83, and the lower end of the return spring 81 abuts against the lower limit ring 83. The return spring 81 is adapted to reset the floating pressure column 5 downward.

[0064] In this embodiment, as Figure 3 As shown, the return spring 81 is sleeved on the floating pressure column 5. The upper end of the return spring 81 abuts against the annular step on the inner wall of the guide groove 41 of the pressure rod 4, and the lower end of the return spring 81 abuts against the lower limit ring 83 on the outer periphery of the lower end of the floating pressure column 5. When the floating pressure column 5 slides upward relative to the pressure rod 4 during the measurement process, the return spring 81 is compressed and stores elastic potential energy. After the measurement is completed, the pressure rod 4 rises, and the return spring 81 releases the elastic potential energy to push the floating pressure column 5 downward to reset to the initial position.

[0065] Specifically, such as Figure 4 As shown, the rotor core pressurized contact thickness gauge also includes a workpiece handling mechanism, which includes:

[0066] Lifting mechanism 91 is mounted on frame 1 and has a lifting end suitable for vertical movement.

[0067] A rotating mechanism 92 is provided on the lifting end, and the rotating mechanism 92 is provided with a rotatable rotating platform 921;

[0068] A pair of clamping cylinders 93 are symmetrically arranged at both ends of the rotating platform 921.

[0069] In this embodiment, as Figure 4 As shown, the lifting mechanism 91 is installed on the frame 1. The lifting end of the lifting mechanism 91 drives the rotating mechanism 92 to rise and fall by moving up and down. The rotating mechanism 92 is set on the lifting end. The rotating platform 921 of the rotating mechanism 92 can rotate relative to the lifting end. A pair of clamping cylinders 93 are symmetrically arranged at both ends of the rotating platform 921. The pair of clamping cylinders 93 clamp or release the workpiece 100 by the extension and retraction of the piston rod. The lifting mechanism 91 drives the rotating mechanism 92 and the pair of clamping cylinders 93 to rise and fall as a whole to realize the picking and placing of the workpiece 100. The rotating mechanism 92 drives the pair of clamping cylinders 93 to rotate and adjust the posture angle of the workpiece 100, so as to realize the transportation and positioning of the workpiece 100 between different workstations.

[0070] In this embodiment, the lifting mechanism 91 is a cylinder, and the piston rod of the cylinder serves as the lifting end. The cylinder drives the rotating mechanism 92 to move up and down through the extension and retraction of the piston rod. In other embodiments, the lifting mechanism 91 can also be a hydraulic cylinder, an electric push rod, or a lead screw lifting mechanism, or other types of linear lifting devices.

[0071] In this embodiment, the rotating mechanism 92 is a rotary cylinder.

[0072] Specifically, such as Figure 1-2 As shown, the rotor core pressurized contact thickness gauge also includes a conveying mechanism, which includes:

[0073] A pair of guide rails 101 are horizontally arranged on the frame 1;

[0074] Two pairs of sliders 102, each pair of sliders 102 slidingly engaged on the corresponding guide rail 101;

[0075] The support platform 103 is mounted on the slider 102 and has positioning protrusions suitable for limiting the workpiece 100.

[0076] A pushing mechanism (not shown in the figure) is mounted on the frame 1. The pushing mechanism is equipped with a push rod, which is connected to the support platform 103.

[0077] The pushing mechanism is adapted to push the slider 102 to move along the guide rail 101, so that the bearing platform 103 reciprocates between the workpiece pressing area and the workpiece handling mechanism.

[0078] Specifically, such as Figure 1-2 As shown, the pushing mechanism is a cylinder.

[0079] In this embodiment, as Figure 1-2 As shown, the guide rail 101 is horizontally mounted on the frame 1, the slider 102 is slidably fitted on the guide rail 101, and the carrying platform 103 is mounted on the slider 102. The push rod of the pushing mechanism is connected to the carrying platform 103. The pushing mechanism pushes the carrying platform 103 and the slider 102 to move horizontally along the guide rail 101 through the push rod, so that the carrying platform 103 reciprocates between the workpiece pressing area and the workpiece conveying mechanism. The carrying platform 103 is provided with a positioning protrusion, which cooperates with the inner hole or outer contour of the workpiece 100 to limit the position of the workpiece 100 on the carrying platform 103 and ensure the positional consistency of the workpiece 100 during the conveying and measurement process.

[0080] In this embodiment, there are two guide rails 101, which are arranged parallel to each other on the frame 1. There are two pairs of sliders 102, which slide and engage with the two guide rails 101 respectively. The support platform 103 is mounted on the two pairs of sliders 102. The cooperation of the two guide rails 101 and the two pairs of sliders 102 provides motion guidance and support for the support platform 103. In some embodiments, the number of guide rails 101 is not limited to two, and can be set according to the size and load capacity of the support platform 103.

[0081] Specifically, such as Figure 1-2As shown, the workpiece pressing area on the frame 1 is provided with an abutment block 12;

[0082] The support platform 103 is provided with a floating slide 105. The floating slide 105 is vertically movable and installed on the support platform 103. The floating slide 105 is suitable for placing workpieces, and the bottom of the floating slide 105 is suitable for abutting with the abutting block 12.

[0083] In this embodiment, as Figure 1-2 As shown, the workpiece pressing area on the frame 1 is provided with an abutment block 12, and the support platform 103 is provided with a floating slide 105. The floating slide 105 is vertically movable on the support platform 103. The workpiece 100 is placed on the floating slide 105. When the support platform 103 moves to the workpiece pressing area, the bottom of the floating slide 105 abuts against the abutment block 12. When the pressure rod 4 moves downward to press the workpiece 100, the abutment block 12 provides an upward supporting reaction force for the floating slide 105. The floating slide 105 moves upward relative to the support platform 103, so that the pressure is applied between the workpiece 100 and the abutment block 12, avoiding excessive pressing load on the support platform 103 and the slider 102, and protecting the mating surfaces of the guide rail 101 and the slider 102.

[0084] Specifically, such as Figure 1-2 As shown, there are three contact displacement sensors 7.

[0085] In this embodiment, as Figure 1-2 As shown, in this embodiment, three contact displacement sensors 7 are evenly distributed at 120 degrees on the stand 2, and the measuring contacts 71 of the three contact displacement sensors 7 abut against the connecting pressure block 6.

[0086] In some embodiments, the number of contact displacement sensors 7 is not limited to three, and can be set according to the size of the workpiece 100 and the measurement accuracy requirements. The measurement results from multiple sensors can be obtained by averaging or maximizing the values ​​to obtain the workpiece thickness.

[0087] The specific embodiments described above further illustrate the technical problems, technical solutions, and beneficial effects of this utility model. It should be understood that the above descriptions are merely specific embodiments of this utility model and are not intended to limit this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A rotor core pressurized contact thickness gauge, characterized in that, include: A frame (1) is provided with a workpiece pressing area suitable for placing a workpiece (100); A support frame (2) is vertically mounted on the frame (1); A drive mechanism (3) is mounted on the upright frame (2) and the drive mechanism (3) is provided with a drive output end suitable for moving up and down; A pressure rod (4) is vertically connected to the drive output end, and a guide groove (41) is provided at the lower end of the pressure rod (4). A floating pressure column (5) is slidably disposed in the guide groove (41), and the lower end of the floating pressure column (5) is adapted to contact the surface of the workpiece. Connecting pressure block (6), the connecting pressure block (6) is fixed at the upper end of the floating pressure column (5); A contact displacement sensor (7) is fixedly installed on the stand (2), and the measuring contact (71) of the contact displacement sensor (7) abuts against the connecting pressure block (6). When the driving mechanism (3) drives the pressure rod (4) to move downward to abut against the workpiece (100), the lower end of the floating pressure column (5) is adapted to contact the surface of the workpiece and slides upward relative to the pressure rod (4) in the guide groove (41). The connecting pressure block (6) drives the contact displacement sensor (7) to measure the contact (71) to measure the thickness of the workpiece.

2. The rotor core pressurized contact thickness gauge according to claim 1, characterized in that: The drive output end is provided with an external thread, and the upper end of the pressure rod (4) is provided with an internal thread hole (42) that mates with the external thread.

3. The rotor core pressurized contact thickness gauge according to claim 1, characterized in that: It also includes a return mechanism, which comprises: A return spring (81) is sleeved on the floating pressure column (5); The inner wall of the guide groove (41) of the pressure rod (4) is provided with an annular step; Wherein, the upper end of the return spring (81) abuts against the annular step; The lower end of the floating pressure column (5) is provided with a lower limit ring (83), and the lower end of the return spring (81) abuts against the lower limit ring (83). The return spring (81) is adapted to reset the floating pressure column (5) downward.

4. The rotor core pressurized contact thickness gauge according to claim 1, characterized in that: It also includes a workpiece handling mechanism, which includes: A lifting mechanism (91) is mounted on the frame (1) and the lifting mechanism (91) is provided with a lifting end suitable for moving up and down; A rotating mechanism (92) is provided on the lifting end, and the rotating mechanism (92) is provided with a rotatable rotating platform (921). A pair of clamping cylinders (93) are symmetrically arranged at both ends of the rotating platform (921).

5. The rotor core pressurized contact thickness gauge according to claim 1, characterized in that: It also includes a conveying mechanism, which comprises: At least one guide rail (101) is horizontally disposed on the frame (1); At least one slider (102) is slidably engaged on a corresponding guide rail (101); A support platform (103) is mounted on the slider (102), and the support platform (103) is provided with positioning protrusions suitable for limiting the workpiece (100); A pushing mechanism is installed on the frame (1), and the pushing mechanism is provided with a push rod, which is connected to the bearing platform (103); The pushing mechanism is adapted to push the slider (102) to move along the guide rail (101), so that the bearing platform (103) reciprocates between the workpiece pressing area and the workpiece conveying mechanism.

6. The rotor core pressurized contact thickness gauge according to claim 5, characterized in that: The workpiece pressing area on the frame (1) is provided with an abutment block (12). The support platform (103) is provided with a floating slide (105), which is vertically movable and installed on the support platform (103). The floating slide (105) is suitable for placing workpieces, and the bottom of the floating slide (105) is suitable for abutting the abutting block (12).

7. The rotor core pressurized contact thickness gauge according to claim 5, characterized in that: The pushing mechanism is a cylinder.

8. The rotor core pressurized contact thickness gauge according to claim 1, characterized in that: There are three contact displacement sensors (7).

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