Device for measuring depth of grooves of upper and lower sealing rings of stator shell of starting motor

Abstract

The invention discloses a depth measuring device for upper and lower sealing ring grooves of a stator shell of a starting motor, and relates to the technical field of starting motors. The problem that in the prior art, the groove depth is inconvenient to measure in a production field is solved. A stator shell small gap end positioning body and a stator shell large gap end positioning body which are matched with a stator shell of the starting motor are arranged on the bottom plate, a first dial indicator and a second dial indicator are arranged on the bottom plate, a probe of the first dial indicator faces the stator shell small gap end positioning body, and a probe of the second dial indicator faces the stator shell large gap end positioning body. The device for measuring the depth of the upper and lower sealing ring grooves of the stator shell of the starting motor is used for measuring the depth of the upper and lower sealing ring grooves of the stator shell of the starting motor, and is small and simple in structure. The groove depth measuring device is simple in operation, accurate in measurement and suitable for production field detection.

Description

Technical Field

[0001] The invention relates to the technical field of starter motors, in particular to a device for measuring the groove depths of upper and lower sealing rings of a stator shell of a starter motor. Background Art

[0002] Because the grooves of the stator housing seal are created through turning, factors such as tool wear, fixture deformation, tool feed speed, and material properties may affect machining accuracy. If the groove depth is too deep, the sealing effect will be poor, and the wear resistance and durability of the seal will be reduced. If the groove depth is too shallow, the seal will be excessively squeezed and deformed, leading to failure, and even damage and failure of the seal during assembly. In summary, the accuracy, stability, and uniformity of the stator housing seal groove depth are extremely important, not only extending the product's service life but also improving its reliability.

[0003] The current method for detecting the groove depth of the stator housing seal ring is to use a profilometer to collect and detect it. Since the profilometer equipment is large, it is not placed at the processing site. Therefore, if a profilometer is used for mass production inspection of the stator housing seal ring, a lot of time will be wasted and production will be delayed. Summary of the Invention

[0004] The present invention provides a device for measuring the groove depth of the upper and lower sealing rings of the stator housing of a starter motor. The device has a simple and compact structure, is easy to operate, has high measurement accuracy, is suitable for production site detection, and improves on-site detection efficiency.

[0005] In order to achieve the above object, the technical solution adopted by the present invention is:

[0006] The present invention discloses a device for measuring the groove depths of upper and lower sealing rings of a starter motor stator housing, comprising a base plate, on which are provided a stator housing small-notch end locating body and a stator housing large-notch end locating body that cooperate with the starter motor stator housing. The base plate is provided with a first micrometer and a second micrometer, wherein the measuring needle of the first micrometer is directed toward the stator housing small-notch end locating body, and the measuring needle of the second micrometer is directed toward the stator housing large-notch end locating body.

[0007] Furthermore, a first fixing plate and a second fixing plate are fixedly provided on the top end of the base plate, the first dial indicator is mounted on the first fixing plate, and the second dial indicator is mounted on the second fixing plate.

[0008] Furthermore, the first fixing plate and the second fixing plate are both provided with a first mounting hole, an elastic chuck is installed in the first mounting hole, and the measuring needle of the first micrometer and the measuring needle of the second micrometer are respectively installed in the corresponding elastic chuck.

[0009] Furthermore, the first fixing plate and the second fixing plate are each provided with at least two first through holes, the top of the base plate is provided with a first screw hole, the first screw holes correspond one-to-one to the first through holes, and the first fixing plate and the second fixing plate are threadedly fixedly connected to the corresponding first screw holes by first screws passing through the corresponding first through holes.

[0010] Furthermore, a first top block and a second top block are provided at the bottom end of the base plate, the first top block is installed directly below the positioning body at the small notch end of the stator housing, and the second top block is installed directly below the positioning body at the large notch end of the stator housing. The first top block and the second top block are both provided with at least two second through holes, and a second screw hole is provided at the bottom end of the base plate, and the second screw hole corresponds one-to-one to the second through hole. The first top block and the second top block are threadedly fixed to the corresponding second screw hole by passing through the second through hole with a second screw.

[0011] Furthermore, the first screw and the second screw are hexagon socket head screws.

[0012] The beneficial effects of the present invention are:

[0013] The present application discloses a device for measuring the groove depth of the upper and lower sealing rings of a starter motor stator housing, which is used to measure the depth of the grooves at the small-notch end and the large-notch end of the starter motor stator housing. The starter motor stator housing is mounted on a stator housing small-notch end positioning body and a stator housing large-notch end positioning body. The stator housing small-notch end positioning body and the stator housing large-notch end positioning body quickly locate the center of the starter motor stator housing. The stylus needles of the first and second micrometers extend into the corresponding small-notch end and large-notch end grooves. During measurement, the small notch end of the standard starting motor stator housing is fitted onto the positioning body at the small notch end of the stator housing, the stylus of the first micrometer is inserted into the groove at the small notch end and contacts the bottom of the groove at the small notch end, the stylus of the first micrometer is calibrated to zero point, and after calibration, the standard starting motor stator housing is removed; the large notch end of the standard starting motor stator housing is fitted onto the positioning body at the large notch end of the stator housing, the stylus of the second micrometer is inserted into the groove at the large notch end and contacts the bottom of the groove at the large notch end, the stylus of the second micrometer is calibrated to zero point, and the calibration is completed. After calibration, remove the standard starter motor stator housing; respectively put the small notch end and large notch end of the starter motor stator housing produced on site on the stator housing small notch end positioning body and the stator housing large notch end positioning body, manually rotate the starter motor stator housing one circle, move the measuring needle along the circumference of the groove, and observe whether the measuring needle of the first micrometer and the measuring needle of the second micrometer swing within the qualified standard range. If the measuring needle swings within the qualified standard range, the starter motor stator housing is qualified; if the measuring needle swings beyond the qualified standard range, the starter motor stator housing is unqualified. The device for measuring the groove depth of the upper and lower sealing rings of the starter motor stator housing of the present application has a simple and compact structure and simple measurement operation; eliminates system errors through calibration standard bodies to ensure stable and reliable measurement results and high measurement accuracy; is suitable for on-site inspection of starter motor stator housing production, and improves on-site inspection efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments 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 those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0015] Figure 1 This is a schematic structural diagram of a device for measuring the groove depth of upper and lower sealing rings of a starter motor stator housing provided by an embodiment of the present invention;

[0016] Figure 2 This is a rear view of a device for measuring the groove depths of upper and lower sealing rings of a starter motor stator housing provided by an embodiment of the present invention;

[0017] Figure 3The present invention is a schematic diagram of a device for measuring the groove depth of upper and lower sealing rings of a starter motor stator housing provided by an embodiment of the present invention for measuring the groove depth of upper and lower sealing rings of a starter motor stator housing.

[0018] Reference numerals:

[0019] Base plate 1, positioning body 2 at the small notch end of the stator housing, first fixing plate 3, elastic chuck 4, first micrometer 5, second micrometer 6, first screw 7, second fixing plate 8, positioning body 9 at the large notch end of the stator housing, second top block 10, second screw 11, first top block 12, second mounting hole 13, starter motor stator housing 14. DETAILED DESCRIPTION

[0020] To make the objectives, technical solutions, and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other implementations obtained by those of ordinary skill in the art without inventive effort are within the scope of protection of the present invention.

[0021] The present invention will be further described below with reference to the accompanying drawings and examples.

[0022] like Figure 1 、 Figure 2 、 Figure 3As shown, this embodiment provides a device for measuring the groove depth of the upper and lower sealing rings of the starter motor stator housing, including a base plate 1. The base plate 1 is provided with a stator housing small-notch end locating body 2 and a stator housing large-notch end locating body 9 that are fitted with the starter motor stator housing 14. The base plate 1 is provided with a first micrometer 5 and a second micrometer 6. The measuring needle of the first micrometer 5 is directed toward the stator housing small-notch end locating body 2, and the measuring needle of the second micrometer 6 is directed toward the stator housing large-notch end locating body 9. Among them, the distance between the probe of the first micrometer 5 and the base plate 1 is the same as the distance between the small notch end groove and the small notch end end head of the starter motor stator housing 14, and the distance between the probe of the second micrometer 6 and the base plate 1 is the same as the distance between the large notch end groove and the large notch end head of the starter motor stator housing 14, ensuring that the probe of the first micrometer 5 and the probe of the second micrometer 6 are extended into the small notch end groove and the large notch end groove (upper and lower sealing ring groove) corresponding to the starter motor stator housing 14, and the probe of the first micrometer 5 and the probe of the second micrometer 6 are in contact with the bottom of the corresponding groove of the standard starter motor stator housing 14, which is convenient for the zero point calibration of the first micrometer 5 and the second micrometer 6. The contact end of the probe of the first micrometer 5 and the probe of the second micrometer 6 is a spherical structure that matches the curved surface shape of the corresponding groove, which is convenient for the probe to extend into the upper and lower sealing ring grooves of the starter motor stator housing 14 for measurement. The first micrometer 5 is located directly above the stator housing small-notch end positioning body 2, and the second micrometer 6 is located directly above the stator housing large-notch end positioning body 9. The stator housing small-notch end positioning body 2 and the stator housing large-notch end positioning body 9 are cylindrical or cylindrical in shape and can be fixed to the base plate 1 by welding. The starter motor stator housing is mounted on the stator housing small-notch end positioning body 2 and the stator housing large-notch end positioning body 9, and the outer walls of the stator housing small-notch end positioning body 2 and the stator housing large-notch end positioning body 9 are in contact with the inner wall of the starter motor stator housing.

[0023] The starter motor stator housing upper and lower sealing ring groove depth measuring device based on the above structure is used to measure the depth of the small-notch end groove and the large-notch end groove of the starter motor stator housing 14. The starter motor stator housing 14 is mounted on the stator housing small-notch end positioning body 2 and the stator housing large-notch end positioning body 9. The stator housing small-notch end positioning body 2 and the stator housing large-notch end positioning body 9 quickly locate the center of the starter motor stator housing 14. The stylus needles of the first micrometer 5 and the second micrometer 6 extend into the corresponding small-notch end groove and the large-notch end groove. During measurement, the small notch end of the standard starting motor stator housing is fitted onto the positioning body 2 at the small notch end of the stator housing, the stylus of the first micrometer 5 is inserted into the groove at the small notch end and contacts the bottom of the groove at the small notch end, the stylus of the first micrometer 5 is calibrated to zero point, and after calibration, the standard starting motor stator housing is removed; then the large notch end of the standard starting motor stator housing is fitted onto the positioning body 9 at the large notch end of the stator housing, the stylus of the second micrometer 6 is inserted into the groove at the large notch end and contacts the bottom of the groove at the large notch end, and the stylus of the second micrometer 6 is calibrated to zero point. The stylus of micrometer 6 is calibrated to zero point. After calibration, the standard starter motor stator housing is removed. The small notch end and large notch end of the starter motor stator housing 14 produced on site are respectively mounted on the stator housing small notch end positioning body 2 and the stator housing large notch end positioning body 9. The starter motor stator housing 14 is manually rotated one circle. The stylus moves along the circumference of the groove. Observe whether the stylus of the first micrometer 5 and the stylus of the second micrometer 6 swing within the qualified standard range. If the stylus swing is within the qualified standard range, the starter motor stator housing is qualified. The swing of the measuring needle exceeds the qualified standard range, and the starter motor stator housing is unqualified. Specifically, the small notch end of the production starter motor stator housing 14 is set on the positioning body 2 of the small notch end of the stator housing, and the measuring needle of the first micrometer 5 is inserted into the groove of the small notch end. The starter motor stator housing 14 is manually rotated for one circle, and the measuring needle of the first micrometer 5 moves circumferentially along the groove of the small notch end. Observe whether the swing of the pointer of the first micrometer 5 is within the qualified standard range; remove the starter motor stator housing 14, and the large notch end of the starter motor stator housing 14 is The notch end is mounted on the positioning body 9 at the large notch end of the stator housing, the probe of the second micrometer 6 is inserted into the groove at the large notch end, and the starter motor stator housing 14 is manually rotated one circle to observe whether the swing of the pointer of the second micrometer 6 is within the qualified standard range; if the swings of the pointers of the first micrometer 5 and the second micrometer 6 are both within the qualified standard range, the starter motor stator housing 14 is qualified; if the swings of the pointers of the first micrometer 5 and the second micrometer 6 exceed the qualified standard range, the starter motor stator housing 14 is unqualified. The device for measuring the groove depth of the upper and lower sealing rings of the starter motor stator housing of the present application has a simple and compact structure and simple measurement operation; it eliminates system errors by calibrating the standard body to ensure stable and reliable measurement results and high measurement accuracy; it is suitable for on-site inspection of the starter motor stator housing production, and improves on-site inspection efficiency.

[0024] As an implementable method, Figure 1 、 Figure 2 、 Figure 3 As shown, a first fixing plate 3 and a second fixing plate 8 are fixedly provided on the top of the base plate 1 , the first dial gauge 5 is mounted on the first fixing plate 3 , and the second dial gauge 6 is mounted on the second fixing plate 8 .

[0025] The first fixing plate 3 and the second fixing plate 8 extend out of the bottom plate 1 toward the positioning body 2 at the small notch end of the stator housing and the positioning body 9 at the large notch end of the stator housing, and are used for installing and fixing the first micrometer 5 and the second micrometer 6.

[0026] As an implementable method, Figure 1 、 Figure 2 、 Figure 3 As shown, the first fixing plate 3 and the second fixing plate 8 are both provided with a first mounting hole, in which an elastic chuck 4 is installed, and the measuring needle of the first micrometer 5 and the measuring needle of the second micrometer 6 are respectively installed in the corresponding elastic chuck 4.

[0027] The inner diameter of the first mounting hole is smaller than the outer diameter of the elastic collet 4. The elastic collet 4 is tightly inserted into the first mounting hole. In order to further stably fix the elastic collet 4 in the first mounting hole, glue can be applied in the first mounting hole. The measuring needle at the lower end of the micrometer is inserted into the elastic collet, and the screws on the elastic collet are tightened to clamp it to the optimal state.

[0028] As an implementable method, Figure 1 、 Figure 2 As shown, second mounting holes 13 are formed on the side walls of the first fixing plate 3 and the second fixing plate 8 facing away from the positioning body 2 at the small notch end of the stator housing and the positioning body 9 at the large notch end of the stator housing.

[0029] The second mounting hole 13 is used to mount and fix the groove depth measuring device of the upper and lower sealing rings of the starter motor stator housing on the measuring platform to prevent the measuring device from moving during the measurement process. For example, a mounting column that plugs into the second mounting hole 13 is set on the vertical measuring platform, and the second mounting hole 13 is plugged into the mounting column before measurement.

[0030] As an implementable method, Figure 1 、 Figure 2 As shown, the first fixing plate 3 and the second fixing plate 8 are each provided with at least two first through holes, and a first screw hole is provided at the top of the base plate 1. The first screw holes correspond one-to-one to the first through holes, and the first fixing plate 3 and the second fixing plate 8 are threadedly fixed to the corresponding first screw holes by first screws 7 passing through the corresponding first through holes.

[0031] The first fixing plate 3, the second fixing plate 8 and the bottom plate 1 are fixed by screw connection, which is convenient for installation and disassembly.

[0032] As an implementable method, Figure 1 、 Figure 2 、 Figure 3 As shown, a first top block 12 and a second top block 10 are provided at the bottom end of the base plate 1. The first top block 12 is installed directly below the positioning body 2 at the small notch end of the stator housing, and the second top block 10 is installed directly below the positioning body 9 at the large notch end of the stator housing. The first top block 12 and the second top block 10 are both provided with at least two second through holes. A second screw hole is provided at the bottom end of the base plate 1. The second screw hole corresponds to the second through hole one by one. The first top block 12 and the second top block 10 are threadedly fixed to the corresponding second screw hole by a second screw 11 passing through the corresponding second through hole.

[0033] The distance between the first top block 12 and the stator housing small notch end positioning body 2 is the same as or slightly larger than the side wall thickness of the starter motor stator housing 14. The distance between the second top block 10 and the stator housing large notch end positioning body 9 is the same as or slightly larger than the side wall thickness of the starter motor stator housing 14. The slightly larger distance, such as greater than 1 mm, facilitates the installation of the motor stator housing 14. After the motor stator housing 14 is installed on the stator housing small notch end positioning body 2 or the stator housing large notch end positioning body 9, the first top block 12 and the second top block 10 support the starter motor stator housing 14, preventing the starter motor stator housing from tilting and improving measurement accuracy. The top of the first protrusion of the first top block 12 and the top of the second protrusion of the second top block 10 are spherical structures that match the curved surface shape of the corresponding groove. Furthermore, the first top block 12 is provided with a first convex portion, the first convex portion is arranged opposite to the measuring needle of the first micrometer 5, and the top width of the first convex portion is smaller than the width of the groove at the small notch end; the second top block 10 is provided with a second convex portion, the second convex portion is arranged opposite to the measuring needle of the second micrometer 6, and the top width of the second convex portion is smaller than the width of the groove at the large notch end; after loosening the corresponding second screw 11, the motor stator housing 14 is mounted on the stator housing small notch end positioning body 2, the top of the first convex portion penetrates into the small notch end groove, and the corresponding second screw 11 is tightened; after loosening the corresponding second screw 11, the motor stator housing 14 is mounted on the stator housing large notch end positioning body 9, the top of the second convex portion extends into the large notch end groove, and the corresponding second screw 11 is tightened; the measurement accuracy is further improved.

[0034] As an implementable method, Figure 1 、 Figure 2 、 Figure 3 As shown, the first screw 7 and the second screw 11 are hexagon socket head screws.

[0035] The hexagonal groove of the hexagonal socket head screw fits snugly with the hexagonal wrench, significantly improving its anti-slip properties during operation, preventing thread damage or installation errors caused by tool slippage. This structure transmits torque more evenly, ensuring the stability of the connection, and is particularly suitable for the high tightening force scenarios used in this application. Hexagonal socket head screws can be quickly removed and installed using an hexagonal wrench or power tool.

[0036] The above description is only a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with this technical field can easily think of changes or replacements within the technical scope disclosed by the present invention, which should be covered by the scope of protection of the present invention.

Claims

1. A device for measuring the groove depth of the upper and lower sealing rings of the stator housing of a starter motor, characterized in that: The invention comprises a base plate (1), on which a stator housing small-notch end positioning body (2) and a stator housing large-notch end positioning body (9) which cooperate with the stator housing of the starter motor are provided, and a first micrometer (5) and a second micrometer (6) are provided on the base plate (1), wherein the measuring needle of the first micrometer (5) faces the stator housing small-notch end positioning body (2), and the measuring needle of the second micrometer (6) faces the stator housing large-notch end positioning body (9).

2. A device for measuring the groove depth of the upper and lower sealing rings of the stator housing of a starter motor according to claim 1, characterized in that: A first fixing plate (3) and a second fixing plate (8) are fixedly provided on the top end of the base plate (1); the first dial gauge (5) is mounted on the first fixing plate (3); and the second dial gauge (6) is mounted on the second fixing plate (8).

3. The device for measuring the groove depth of the upper and lower sealing rings of the stator housing of a starter motor according to claim 2, characterized in that: The first fixing plate (3) and the second fixing plate (8) are both provided with a first mounting hole, an elastic chuck (4) is installed in the first mounting hole, and the measuring needle of the first micrometer (5) and the measuring needle of the second micrometer (6) are respectively installed in the corresponding elastic chuck (4).

4. A device for measuring the groove depth of the upper and lower sealing rings of the starter motor stator housing according to claim 3, characterized in that: The first fixing plate (3) and the second fixing plate (8) are each provided with at least two first through holes, the top end of the base plate (1) is provided with a first screw hole, the first screw hole and the first through hole being in one-to-one correspondence, and the first fixing plate (3) and the second fixing plate (8) are threadedly fixedly connected to the corresponding first screw hole by first screws (7) passing through the corresponding first through holes.

5. The device for measuring the groove depth of the upper and lower sealing rings of the starter motor stator housing according to claim 4, characterized in that: The bottom end of the base plate (1) is provided with a first top block (12) and a second top block (10), the first top block (12) is installed directly below the positioning body (2) at the small notch end of the stator housing, and the second top block (10) is installed directly below the positioning body (9) at the large notch end of the stator housing, the first top block (12) and the second top block (10) are both provided with at least two second through holes, the bottom end of the base plate (1) is provided with a second screw hole, the second screw hole corresponds to the second through hole one by one, the first top block (12) and the second top block (10) are threadedly fixedly connected with the corresponding second screw hole by a second screw (11) passing through the second through hole.

6. A device for measuring the groove depth of the upper and lower sealing rings of the starter motor stator housing according to claim 5, characterized in that: The first screw (7) and the second screw (11) are hexagon socket head screws.

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