Detection mechanism for grooving depth of stator core

Abstract

The utility model discloses a detection mechanism for 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 utility model, the depth of the notch groove on the motor stator can be rapidly and accurately detected.

Description

Technical Field

[0001] This utility model relates to the field of motor stator testing, specifically to a testing mechanism for the depth of grooves in a stator core. Background Technology

[0002] The stator is an important component of motors such as generators and starters. It is a crucial part of the electric motor. The stator consists of three parts: the stator core, the stator windings, 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 magnetic lines of force within this rotating magnetic field, thereby generating (output) current.

[0003] Machining grooves on the outer circumference of the stator is an important step in the stator manufacturing process. The grooves directly affect subsequent processing and stator model identification. The groove depth and position are important metrics for this process. Current methods for measuring groove depth use depth gauges to measure the position of the cut grooves, finding the deepest point and recording it. This method is not only difficult to accurately locate and measure the groove depth, but the depth gauges are also inconvenient to use and require regular calibration, causing certain difficulties. Summary of the Invention

[0004] This invention provides a mechanism for detecting the depth of grooves on a stator core, which can quickly and accurately detect the depth of grooves on a motor stator.

[0005] The technical solution to the above problem is as follows:

[0006] A mechanism for detecting the groove depth of a stator core, comprising:

[0007] Base;

[0008] A mounting bracket for mating with the stator core; the mounting bracket mates with the base.

[0009] A limiting component for limiting the position of the stator core; the limiting component is fixed to the base.

[0010] Measuring gauge, which mates with limit components;

[0011] A probe that mates with the grooves on the stator core; the probe is connected to a measuring instrument.

[0012] The stator core is assembled on the mounting base, and the mounting base is driven to move towards the probe. After the bottom of the groove is against the probe, the mounting base is driven to continue moving. When the stator core is against the limiting component, the movement of the mounting base is stopped, and the stator core and the limiting component are kept against each other.

[0013] Furthermore, it also includes a positioning component that is inserted into the stator core winding slot to perform circumferential positioning of the stator core, with one end of the positioning component fixed to the mounting base.

[0014] Furthermore, the mounting base includes:

[0015] The support base has one end for supporting the stator core and the other end for engaging with the base.

[0016] A positioning boss that mates with the inner circumferential surface of the stator core, and a positioning boss support for fixing.

[0017] Furthermore, the base is provided with a guide groove, and the mounting base is provided with a slider, which is in clearance fit with the guide groove.

[0018] Furthermore, one end of the limiting component is provided with a protrusion that is inserted into the guide groove.

[0019] Furthermore, it also includes:

[0020] A driver that moves the mounting base on the base;

[0021] A detector used to detect whether the stator core and the limiting components are in a blocking state;

[0022] The controller is electrically connected to the detector and is also connected to the driver.

[0023] The testing mechanism of this utility model combines a base, an assembly seat, a probe, a limiting component, and a dial indicator. The assembly seat and positioning component can limit the angle of the stator core, and the limiting component can limit the amount of feed of the stator core toward the measuring instrument, thereby locking the groove position and making the measuring instrument engage at the deepest position of the groove. The measuring instrument, together with the probe, can accurately detect the depth of the groove. By observing the change in the measuring rod of the measuring instrument, the accurate value of the groove depth can be read. This saves a lot of time in confirming the groove depth and also improves the accuracy of the measurement, making the existing measurement values ​​more accurate and reliable. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the stator core.

[0025] Figure 2 A schematic diagram of a mechanism for detecting the depth of grooves in a stator core.

[0026] Figure 3 This is a cross-sectional view of a mechanism for detecting the depth of grooves in the stator core.

[0027] Figure 4 A schematic diagram of the mechanism for detecting the groove depth of the stator core during operation.

[0028] Labels in the attached diagram:

[0029] Base 1, mounting base 2, support base 2a, positioning boss 2b, limiting component 3, measuring gauge 4, probe 5, positioning component 6, guide groove 7, slider 8, protrusion 9, driver 10, detector 11, controller 12, stator core A, groove B, worktable C. Detailed Implementation

[0030] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art are briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other embodiments can be obtained based on the drawings without creative effort, and these embodiments are still within the protection scope of the claims of this utility model.

[0031] like Figures 1 to 4 This utility model discloses a stator core groove depth detection mechanism, which includes a base 1, an assembly base 2, a limiting component 3, a measuring gauge 4, and a probe 5. Each part and the relationship between them are described in detail below.

[0032] To prevent the base 1 from not moving, in this embodiment, the base 1 is fixed to the workbench C, for example, by bolts or rivets to fix the base 1 to the workbench C as a whole. In this embodiment, the base 1 is provided with a guide groove 7, which is used to cooperate with the mounting base 2.

[0033] The mounting base 2 is used to mate with the stator core A and mates with the base 1. The mounting base 2 includes a support 2a and a positioning boss 2b. One end of the support 2a supports the stator core A, and the other end mates with the base 1. The positioning boss 2b mates with the inner circumferential surface of the stator core A and is fixed to the support 2a. The outer diameter of the positioning boss 2b is smaller than the outer diameter of the support 2a. Both the support 2a and the positioning boss 2b are annular components, which helps reduce the material used in manufacturing the mounting base 2, thereby reducing the manufacturing cost of the inspection mechanism. Typically, the inner hole of the stator core A is a circular hole; therefore, the positioning boss 2b preferably adopts a circular ring structure.

[0034] In this embodiment, the detection mechanism further includes a positioning component 6 that is inserted into the winding slot of the stator core A to perform circumferential positioning of the stator core A. One end of the positioning component 6 is fixed to the mounting base 2. In this embodiment, one end of the positioning component 6 is preferably fixed to the support base 2a, and the other end of the positioning component 6 is the free end that is inserted into the winding slot of the stator core A. The positioning component 6 is a pin or a shaft, and the number of positioning components 6 is at least two. Therefore, by inserting multiple positioning components 6 into the winding slot, rotation of the stator core A can be prevented.

[0035] In this embodiment, the mounting base 2 is provided with a slider 8, which is in clearance fit with the guide groove 7. Applying a pushing or pulling force to the mounting base 2 can make the mounting base 2 move along the guide groove 7 on the base 1, thereby making the mounting base 2 move linearly so that the groove B on the stator core A can be accurately engaged with the probe 5.

[0036] When the stator core A moves with the mounting base 2, after the stator core A and the probe 5 come into contact and reach a suitable position, in order to prevent the stator core A from continuing to move and damaging the measuring instrument 4, the limiting component 3 is fixed to the base 1. The limiting component 3 limits the stator core A to prevent it from continuing to move after coming into contact with the probe 5, thereby preventing the stator core A from applying further pressure to the probe 5, and thus preventing the measuring instrument 4 from being subjected to unnecessary force.

[0037] One end of the limiting component 3 is provided with a protrusion 9, which is inserted into the guide groove 7. This structure not only facilitates the installation of the limiting component 3, but also helps to make the position of the probe 5 correspond to the groove B. When the mounting base 2 is moved, the probe 5 can be combined with the groove B.

[0038] The measuring gauge 4 cooperates with the limiting component 3, and is fixed to the limiting component 3. A through hole is preferably provided on the limiting component 3. The measuring rod of the measuring gauge 4 extends into the through hole. A portion of the measuring head 5 is located in the through hole and fixed to the measuring rod of the measuring gauge 4. The other portion of the measuring head 5 is exposed outside the through hole to facilitate engagement with the bottom of the groove B. The measuring gauge 4 can be a dial indicator or a micrometer indicator. When testing different models of stators, a standard calibration block (not shown in the figure) is first used to calibrate the measuring gauge 4 and calibrate the position of the measuring head 5. The measuring gauge 4, in conjunction with the calibration block, can test different models of stators.

[0039] The probe 5 is used to engage with the groove B on the stator core A. The probe 5 is connected to the measuring instrument 4. The part of the probe 5 exposed outside the through hole of the limiting component 3 is tapered.

[0040] The movement of the assembly base 2 on the base 1 can be manually operated by the injured person or automatically. The automatic mechanism includes a driver 10, a detector 11, and a controller 12. The driver 10 moves the assembly base 2 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 instead of a pneumatic cylinder. The detector 11 is used to detect whether the stator core A and the limiting component 3 are in a contacting state. The detector 11 is installed in the limiting component 3 and can be a limit switch or a push-button switch, etc. The controller 12 is electrically connected to the detector 11 and is also connected to the driver 10. The controller 12 is a PLC or a microcontroller. In this invention, the movement of the assembly base 2 on the base 1 is preferably automatic.

[0041] The stator core A is assembled onto the mounting base 2. The operator inputs a signal to the controller 12, such as pressing a button switch. After receiving the signal from the button switch, the controller 12 controls the solenoid valve to open, allowing gas from the air source to enter the rodless chamber of the cylinder. The gas in the rod chamber returns to the air source under the compression of the piston, and the piston rod of the cylinder extends, thereby driving the mounting base 2 to move linearly along the guide groove 7 on the base 1. As the stator core A moves with the mounting base 2, the bottom of the groove B abuts against the probe 5. As the mounting base 2 continues to move, the pressure on the stator core A... The force is transmitted to the measuring instrument 4 through the probe 5, and the reading on the measuring instrument 4 changes. When the stator core A and the limiting component 3 are in contact, the stator core A applies pressure to the detector 11. The detector 11 sends a signal to the controller 12, so the controller 12 controls the solenoid valve to close, cuts off the air supply to the rodless chamber of the cylinder, and prevents the gas output from the rod chamber, so that the length of the cylinder piston rod extension is maintained, thereby maintaining the contact between the stator core A and the limiting component 3, and the mounting base 2 stops moving. The reading on the measuring instrument 4 is the depth of the groove B.

Claims

1. A mechanism for detecting the groove depth of a stator core, characterized in that, include: Base (1); A mounting base (2) for mates with the stator core (A), the mounting base (2) mates with the base (1); A limiting component (3) for limiting the stator core (A) is fixed to the base (1); Measuring gauge (4), which is used in conjunction with limiting component (3); The probe (5) is matched with the groove (B) on the stator core (A) and is connected to the measuring instrument (4); The stator core (A) is mounted on the mounting base (2), and the mounting base (2) is driven to move toward the probe (5) so that the bottom of the groove (B) abuts against the probe (5). The mounting base (2) is then driven to move. When the stator core (A) abuts against the limiting component (3), the mounting base (2) is stopped, and the abutment between the stator core (A) and the limiting component (3) is maintained.

2. The stator core groove depth detection mechanism according to claim 1, characterized in that, It also includes a positioning component (6) that is inserted into the stator core (A) winding slot to circumferentially position the stator core (A), with one end of the positioning component (6) fixed to the mounting base (2).

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

4. The stator core groove depth detection mechanism according to claim 1, characterized in that, The base (1) is provided with a guide groove (7), and the mounting base (2) is provided with a slider (8), which is in clearance fit with the guide groove (7).

5. The stator core groove depth detection mechanism according to claim 4, characterized in that, One end of the limiting component (3) is provided with a protrusion (9), which is inserted into the guide groove (7).

6. A stator core groove depth detection mechanism according to any one of claims 1 to 5, characterized in that, Also includes: A driver (10) that drives the assembly base (2) to move on the base (1). A detector (11) is used to detect whether the stator core (A) and the limiting component (3) are in the contact state. The controller (12) is electrically connected to the detector (11) and is also connected to the driver (10).

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