Detection mechanism for grooving depth of stator core

Abstract

The invention discloses a detection mechanism for the grooving depth of a stator core. The detection mechanism comprises a base; the assembling seat is used for being matched with a stator iron core, and the assembling seat is matched with the base; the limiting component is used for limiting the stator core and is fixed with the base; the measuring meter is matched with the limiting component; the measuring head is matched with the notch groove on the stator iron core and is connected with the measuring meter; and assembling the stator core on the assembling seat, driving the assembling seat to move towards the measuring head, continuously driving the assembling seat to move after the groove bottom of the notch groove abuts against the measuring head, stopping moving the assembling seat when the stator core abuts against the limiting component, and keeping the stator core abutting against the limiting component. According to the invention, the depth of the notch groove on the motor stator can be rapidly and accurately detected.

Description

Technical Field

[0001] The invention relates to the field of motor stator detection, and in particular to a detection mechanism for the groove depth of a stator iron core. Background Art

[0002] The motor stator is an important part of motors such as generators and starters. The stator is an important part of the motor. The stator consists of three parts: the stator core, the stator winding and the frame. The main function of the stator is to generate a rotating magnetic field, while the main function of the rotor is to be cut by the magnetic lines of force in the rotating magnetic field to generate (output) current.

[0003] Processing grooves on the outer surface of the stator is an important process in the stator process. The grooves directly affect the processing of the subsequent processes and the model identification of the stator. The groove depth and groove position are important measurement methods for the process. The existing method of measuring the groove depth uses a depth gauge to measure the position of the cut groove, find the deepest position, measure and record it. This method is not only difficult to accurately find and measure the depth of the groove, but the depth gauge is also inconvenient to measure and needs to be calibrated regularly, which causes certain difficulties. Summary of the invention

[0004] The invention provides a detection mechanism for the groove depth of a stator core. The invention can detect the groove depth on the motor stator quickly and accurately.

[0005] The technical solutions to the above problems are as follows: A detection mechanism for the groove depth of a stator core, comprising: Base; An assembly seat used to cooperate with the stator core, the assembly seat cooperates with the base; A limiting component for limiting the position of the stator core, wherein the limiting component is fixed to the base; Measuring table, the measuring table cooperates with the limit component; A probe that matches the grooves on the stator core, and the probe is connected to a measuring meter; Assemble the stator core on the assembly seat, drive the assembly seat to move toward the probe, make the groove bottom abut against the probe, and then continue to drive the assembly seat to move. When the stator core abuts against the limiting component, stop moving the assembly seat and keep the stator core abutting against the limiting component.

[0006] Furthermore, it also includes a positioning component inserted into the wire embedding groove of the stator core to perform circumferential positioning on the stator core, and one end of the positioning component is fixed to the assembly seat.

[0007] Further, the assembly seat comprises: A support seat, one end of which is used to support the stator core, and the other end of which cooperates with the base; A positioning boss matched with the inner circumference of the stator core is fixed by the positioning boss support seat.

[0008] Furthermore, a guide groove is provided on the base, and a slider is provided on the assembly seat, and the slider is clearance-matched with the guide groove.

[0009] Furthermore, a protrusion is provided at one end of the limiting component, and the protrusion is inserted into the guide groove.

[0010] Furthermore, it also includes: A driver for driving the assembly seat to move on the base; A detector for detecting whether the stator core and the limiting component are in an abutting state; The controller is electrically connected to the detector and is also connected to the driver.

[0011] The detection mechanism of the present invention combines a base, an assembly base, a probe, a limit component and a dial indicator together; the assembly base and the positioning component can limit the angle of the stator core; the limit component can limit the amount of the stator core fed to the measuring table, thereby locking the groove position, so that the measuring table is combined at the deepest position of the groove; the measuring table cooperates with the probe to accurately detect the depth of the groove; the accurate value of the groove depth is read by the change of the detection rod of the measuring table, thereby saving a lot of time for confirming the groove depth, and also improving the accuracy of the measurement, making the existing measurement values ​​more accurate and reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 Schematic diagram of the stator core.

[0013] Figure 2 Schematic diagram of the detection mechanism for the groove depth of the stator core.

[0014] Figure 3 A cross-sectional view of a mechanism for detecting the depth of grooves in a stator core.

[0015] Figure 4 This is a schematic diagram of the stator core groove depth detection mechanism in operation.

[0016] Markings in the attached drawings: Base 1, assembly seat 2, support seat 2a, positioning boss 2b, limit component 3, measuring table 4, probe 5, positioning component 6, guide groove 7, slider 8, protrusion 9, driver 10, detector 11, controller 12, stator core A, groove B, workbench C. DETAILED DESCRIPTION

[0017] In order to more clearly illustrate the examples of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other implementation methods can be obtained according to the drawings in the specification without paying creative work, and these implementation methods are still within the protection scope of the claims of the present invention.

[0018] like Figures 1 to 4 A detection mechanism for the groove depth of a stator core of the present invention comprises a base 1, an assembly seat 2, a limit component 3, a measuring table 4, and a probe 5. Each part and the relationship between them are described in detail below.

[0019] In order to prevent the base 1 from moving, in this embodiment, the base 1 is fixed on the workbench C, for example, by bolts or rivets to fix the base 1 and the workbench C into one. In this embodiment, a guide groove 7 is provided on the base 1, and the guide groove 7 is used to cooperate with the assembly seat 2.

[0020] The assembly seat 2 is used to cooperate with the stator core A, and the assembly seat 2 cooperates with the base 1. The assembly seat 2 includes a support seat 2a and a positioning boss 2b. One end of the support seat 2a is used to support the stator core A, and the other end of the support seat 2a cooperates with the base 1. The positioning boss 2b is used to cooperate with the inner circumference of the stator core A, and the positioning boss 2b supports the seat 2a to be fixed. The outer diameter of the positioning boss 2b is smaller than the outer diameter of the support seat 2a. The support seat 2a and the positioning boss 2b are both annular components, which is conducive to reducing the materials used in manufacturing the assembly seat 2, thereby reducing the manufacturing cost of the detection mechanism. Usually, the inner hole of the stator core A is a circular hole, so the positioning boss 2b preferably adopts a circular ring structure.

[0021] In this embodiment, the detection mechanism further includes a positioning component 6 inserted into the wire embedding groove of the stator core A to perform circumferential positioning of the stator core A, and one end of the positioning component 6 is fixed to the assembly seat 2. In this embodiment, one end of the positioning component 6 is preferably fixed to the support seat 2a, and the other end of the positioning component 6 is a free end inserted into the wire embedding groove of the stator core A. The positioning component 6 is a pin or a shaft, and the number of the positioning components 6 is at least 2. Therefore, by inserting multiple positioning components 6 into the wire embedding groove, the stator core A can be prevented from rotating.

[0022] In this embodiment, a slider 8 is provided on the assembly seat 2, and the slider 8 is clearance-matched with the guide groove 7. By applying a thrust or a pull force to the assembly seat 2, the assembly seat 2 can be moved along the guide groove 7 on the base 1, thereby making the assembly seat 2 move linearly, so that the groove B on the stator core A can be accurately combined with the probe 5.

[0023] When the stator core A moves with the assembly seat 2, after the stator core A and the probe 5 hit each other and reach a suitable position, in order to prevent the stator core A from continuing to move and causing damage to the measuring table 4, the limiting component 3 is fixed to the base 1, and the stator core A is limited by the limiting component 3 to prevent the stator core A from continuing to move after hitting the probe 5, thereby preventing the stator core A from further applying pressure to the probe 5, and further preventing the measuring table 4 from being subjected to unnecessary force.

[0024] A protrusion 9 is provided at one end of the limiting component 3, and the protrusion 9 is inserted into the guide groove 7. This structure is not only convenient for installing the limiting component 3, but also helps to make the position of the probe 5 correspond to the groove B. When the assembly seat 2 is moved, the probe 5 can be combined with the groove B.

[0025] The measuring table 4 cooperates with the limiting component 3, the measuring table 4 is fixed to the limiting component 3, and a through hole is preferably set on the limiting component 3, the measuring rod of the measuring table 4 extends into the through hole, a part of the probe 5 is located in the through hole and fixed to the measuring rod of the measuring table 4, and the other part of the probe 5 is exposed outside the through hole to facilitate the combination with the bottom of the groove B. The measuring table 4 can use a dial indicator or a micrometer. When testing stators of different models, first use a standard calibration block (the calibration block is not shown in the figure) to calibrate the measuring table 4 and calibrate the position of the probe 5. The measuring table 4 can be used with the calibration block to test stators of different models.

[0026] The probe 5 is used to cooperate with the groove B on the stator core A, and the probe 5 is connected to the measuring table 4; the part of the probe 5 exposed outside the through hole of the limiting component 3 is cone-shaped.

[0027] The movement of the assembly seat 2 on the base 1 can be manually operated by the injured person, or it can be automatically operated. The structure for realizing the automatic mode includes a driver 10, a detector 11, and a controller 12. The driver 10 drives the assembly seat 2 to move on the base 1; the driver 10 includes a cylinder, a solenoid valve, and an air source. The cylinder is connected to the solenoid valve, and the solenoid valve is connected to the air source. A hydraulic cylinder can be used to replace the cylinder. The detector 11 is used to detect whether the stator core A and the limit component 3 are in a top-butting state; the detector 11 is installed in the limit component 3, and the detector 11 can be a travel switch or a key switch, etc. The controller 12 is electrically connected to the detector 11, and the controller 12 is also connected to the driver 10. The controller 12 adopts a PLC or a single-chip microcomputer. In the present invention, the movement of the assembly seat 2 on the base 1 preferably adopts an automatic mode.

[0028] The stator core A is assembled on the assembly seat 2, and the operator inputs a signal to the controller 12, such as pressing a button switch. After the controller 12 receives the signal that the button switch is turned on, the controller 12 controls the solenoid valve to open, so that the gas in the gas source enters the rodless chamber of the cylinder, and the gas in the rod chamber returns to the gas source under the pressure of the piston, and the piston rod of the cylinder extends, thereby driving the assembly seat 2 to move linearly along the guide groove 7 on the base 1. After the stator core A moves with the assembly seat 2, the bottom of the groove B abuts against the probe 5. As the assembly seat 2 continues to move, the pressure on the stator core A is The force is transmitted to the measuring gauge 4 through the probe 5, and the reading on the measuring gauge 4 changes. When the stator core A and the limit component 3 are in contact with each other, the stator core A applies pressure to the detector 11, and the detector 11 sends a signal to the controller 12, so that the controller 12 controls the solenoid valve to close, cuts off the air source input into the rodless cavity of the cylinder, and prevents the gas output in the rod cavity, so that the extended length of the cylinder piston rod is maintained, thereby maintaining the contact between the stator core A and the limit component 3, and the assembly seat 2 stops moving. The reading on the measuring gauge 4 is the depth of the groove B.

Claims

1. A detection mechanism for the groove depth of a stator core, characterized in that: include: Base (1); An assembly seat (2) for cooperating with the stator core (A), the assembly seat (2) cooperating with the base (1); A limiting component (3) for limiting the position of the stator core (A), the limiting component (3) being fixed to the base (1); A measuring table (4), the measuring table (4) cooperates with the limiting component (3); A probe (5) that cooperates with the groove (B) on the stator core (A), and the probe (5) is connected to a measuring meter (4); The stator core (A) is assembled on the assembly seat (2), and the assembly seat (2) is driven to move toward the probe (5) so that the bottom of the groove (B) abuts against the probe (5), and then the assembly seat (2) is driven to move. When the stator core (A) abuts against the limiting component (3), the movement of the assembly seat (2) is stopped, and the stator core (A) and the limiting component (3) are kept abutting against each other.

2. A detection mechanism for the groove depth of a stator core according to claim 1, characterized in that: It also includes a positioning component (6) inserted into the wire embedding groove of the stator core (A) to perform circumferential positioning on the stator core (A), and one end of the positioning component (6) is fixed to the assembly seat (2).

3. A detection mechanism for the groove depth of a stator core according to claim 1 or 2, characterized in that: The assembly seat (2) comprises: A support seat (2a), one end of the support seat (2a) is used to support the stator core (A), and the other end of the support seat (2a) cooperates with the base (1); A positioning boss (2b) is matched with the inner circumferential surface of the stator core (A), and the positioning boss (2b) is fixed by the support seat (2a).

4. A detection mechanism for the groove depth of a stator core according to claim 1, characterized in that: The base (1) is provided with a guide groove (7), the assembly seat (2) is provided with a slide block (8), and the slide block (8) is clearance-matched with the guide groove (7).

5. A detection mechanism for the groove depth of a stator core according to claim 4, characterized in that: A protrusion (9) is provided at one end of the limiting component (3), and the protrusion (9) is inserted into the guide groove (7).

6. A detection mechanism for the groove depth of a stator core according to any one of claims 1 to 5, characterized in that: Also includes: A driver (10) for driving the assembly seat (2) to move on the base (1); A detector (11) for detecting whether the stator core (A) and the limiting component (3) are in an abutting state; A controller (12), the controller (12) is electrically connected to the detector (11), and the controller (12) is also connected to the driver (10).

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