A new type of stepper motor rotor axial displacement detection jig

Abstract

The utility model discloses a new type stepper motor rotor axial play detection fixture, it includes base, dial gauge fixed base, the dial gauge fixed base of installation, base still is equipped with push rod fixed base, motor fixed base, and push rod fixed base, motor fixed base, dial gauge fixed base are sequentially arranged from left to right with interval, and the motor fixed base upper end portion is set up motor positioning groove, and the motor fixed base upper end portion is located in the right end side of motor positioning groove and sets up spacing stopper, the push rod fixed base upper end portion is set up push rod mounting hole, and the push rod mounting hole is slidably embedded with movable push rod, and the right end portion of movable push rod is equipped with the casing pressure block in the right end side of push rod fixed base, and the casing pressure block is slidably installed with rotor pressure rod, and the casing pressure block is hinged with drive swing bar through the pivot in the left end side of rotor pressure rod. Through above -mentioned structural design, the utility model can effectively be applicable to stepper motor rotor axial play detection, and has the advantages such as novel structure design, convenient operation and use.

Description

Technical Field

[0001] This utility model relates to the field of motor testing technology, and in particular to a novel stepper motor rotor axial displacement testing fixture. Background Technology

[0002] For stepper motors, axial runout is a crucial parameter for evaluating their quality. Excessive axial runout can negatively impact the stability and accuracy of actuator movements during operation. Therefore, it is essential to test the axial runout of stepper motors.

[0003] Among them, the Chinese utility model patent with patent number ZL202320694180.2 and patent name: "An Angular Contact Bearing Clearance Adjustment Device" discloses a detection mechanism for detecting the axial displacement of a connecting shaft. Specifically, the above-mentioned detection mechanism for detecting the axial displacement of a connecting shaft includes a dial indicator and a bracket for mounting the dial indicator. The measuring rod of the dial indicator contacts the top of the connecting shaft. During the test, the bottom of the connecting shaft is pried upward by a pry bar, causing the connecting shaft to shift axially, and the axial displacement of the connecting shaft is read by means of the dial indicator reading.

[0004] It should be noted that the above-mentioned detection mechanism for detecting the axial displacement of the connecting shaft still has the following defects: Stepper motor products include a housing, a stator and a rotor respectively installed inside the housing, with the front end of the rotor extending forward out of the housing and the rear end of the rotor exposed on the rear surface of the housing; Considering the special structure of stepper motor products, the above-mentioned detection mechanism for detecting the axial displacement of the connecting shaft is not suitable for detecting the axial displacement of the stepper motor rotor.

[0005] Therefore, it is necessary to design and develop a dedicated stepper motor rotor axial displacement detection device for stepper motor products. Utility Model Content

[0006] The purpose of this utility model is to provide a new type of stepper motor rotor axial displacement detection fixture to address the shortcomings of the existing technology. This new type of stepper motor rotor axial displacement detection fixture has a novel structural design, is easy to operate and use, and can be effectively applied to the detection of stepper motor rotor axial displacement.

[0007] To achieve the above objectives, this utility model is implemented through the following technical solution.

[0008] A novel stepper motor rotor axial displacement detection fixture includes a base, a dial indicator mounting base mounted on the base, and a dial indicator mounted on the dial indicator mounting base. The base is also equipped with a push rod mounting base and a motor mounting base, which are arranged alternately from left to right. The upper end of the motor mounting base is provided with a motor positioning groove, and a limit stop is provided on the right side of the upper end of the motor mounting base at the motor positioning groove. The upper end of the push rod fixing seat is provided with a push rod mounting hole that runs through the entire left and right direction. A movable push rod is slidably embedded in the push rod mounting hole. The right end of the movable push rod is equipped with a housing pressure block located on the right side of the push rod fixing seat. The housing pressure block is slidably mounted with a rotor pressure rod, and a drive swing rod is pivotally mounted on the left side of the housing pressure block and the rotor pressure rod.

[0009] The right end of the housing pressure block is provided with an annular pressing part that protrudes to the right and is in the shape of a ring. The housing pressure block has a pressure rod mounting hole on the inner side of the annular pressing part. The rotor pressure rod is slidably embedded in the pressure rod mounting hole, and the lower end of the drive swing rod extends into the pressure rod mounting hole.

[0010] The rotor pressure rod has a pressure rod shoulder at its left end, and the inner wall of the pressure rod mounting hole has a pressure block shoulder located on the right side of the pressure rod shoulder. When the rotor pressure rod slides to its limit position relative to the housing pressure block to the right, the pressure rod shoulder abuts against the pressure block shoulder.

[0011] The rotor pressure rod has a pressure needle extending protruding to the right at its right end.

[0012] The left end of the movable push rod extends to the left end of the push rod fixing seat, and a connecting block is installed at the left end of the movable push rod. The connecting block is equipped with a guide rod that extends in a straight line along the left and right direction. The push rod fixing seat has a guide hole corresponding to the guide rod, and the guide rod is inserted into the guide hole of the push rod fixing seat.

[0013] Compared with existing technologies, this utility model has the following advantages: Specifically, when using the novel stepper motor rotor axial displacement detection fixture of this utility model to test the stepper motor, the housing of the stepper motor is positioned in the motor positioning groove of the motor mounting base. During testing, the housing pressure block is first moved by the movable push rod, and the measuring rod of the dial indicator contacts and elastically abuts against the right end face of the rotor of the stepper motor. At this time, the dial indicator reading is recorded as A1. Then, the driving swing rod is moved to push the rotor pressure rod to the right, and the rotor pressure rod abuts against the left end face of the rotor of the stepper motor. At this time, the dial indicator reading is recorded as A2, and the axial displacement value of the stepper motor rotor is |A2-A1|. The novel stepper motor rotor axial displacement detection fixture of this utility model can be effectively applied to the detection of stepper motor rotor axial displacement and has the advantages of novel structural design and convenient operation. Attached Figure Description

[0014] The present invention will be further described below with reference to the accompanying drawings, but the embodiments in the drawings do not constitute any limitation on the present invention.

[0015] Figure 1 This is a schematic diagram of the structure of this utility model.

[0016] Figure 2 This is a structural schematic diagram from another perspective of the present invention.

[0017] Figure 3 This is an exploded view of the present invention.

[0018] Figure 4 This is a partial cross-sectional schematic diagram of the present invention.

[0019] exist Figures 1 to 4 This includes: 1-Base; 2-Dial indicator mounting base; 3-Dial indicator; 4-Push rod mounting base; 41-Push rod mounting hole; 42-Guide hole; 5-Motor mounting base; 51-Motor positioning groove; 52-Limit stop; 6-Movable push rod; 7-Housing pressure block; 71-Annular pressure holding part; 72-Pressure rod mounting hole; 73-Pressure block shoulder; 81-Rotor pressure rod; 811-Pressure rod shoulder; 812-Pressure holding needle part; 82-Drive swing arm; 83-Pivot; 91-Connecting block; 92-Guide rod; 100-Stepper motor under test. Detailed Implementation

[0020] The present invention will now be described in conjunction with specific embodiments.

[0021] Example 1, as Figures 1 to 3As shown, a novel stepper motor rotor axial displacement detection fixture includes a base 1, a dial indicator mounting base 2 mounted on the base 1, and a dial indicator 3 mounted on the dial indicator mounting base 2. It should be explained that, for the dial indicator in this embodiment, its measuring rod has appropriate elasticity to accommodate minor deformations of the workpiece surface and avoid measurement errors due to excessive rigidity; the use of an elastic measuring rod in the dial indicator is already existing technology and will not be elaborated upon here.

[0022] Among them, such as Figures 1 to 4 As shown, the base 1 is also equipped with a push rod fixing seat 4 and a motor fixing seat 5. The push rod fixing seat 4, the motor fixing seat 5, and the dial indicator fixing seat 2 are arranged alternately from left to right.

[0023] Furthermore, such as Figures 1 to 3 As shown, a motor positioning groove 51 is provided at the upper end of the motor mounting base 5, and a limit stop 52 is provided at the right end of the motor positioning groove 51 at the upper end of the motor mounting base 5. It should be explained that the motor positioning groove 51 in this embodiment adopts a contour-following design, that is, the outline shape of the motor positioning groove 51 is adapted to the outer outline shape of the housing of the stepper motor 100 under test. When the stepper motor 100 under test is placed in the motor positioning groove 51 of the motor mounting base 5, the motor positioning groove 51 positions the stepper motor 100 under test.

[0024] Furthermore, such as Figures 1 to 4 As shown, the upper end of the push rod fixing seat 4 is provided with a push rod mounting hole 41 that runs through the entire left and right direction. A movable push rod 6 is slidably embedded in the push rod mounting hole 41. The right end of the movable push rod 6 is provided with a housing pressure block 7 located on the right side of the push rod fixing seat 4. The housing pressure block 7 is slidably mounted with a rotor pressure rod 81, and the housing pressure block 7 is hinged to the left end of the rotor pressure rod 81 via a pivot 83 with a drive swing rod 82.

[0025] In the process of performing axial displacement detection using the novel stepper motor rotor axial displacement detection fixture of Embodiment 1, the process includes the following steps, specifically: Step a: Place the stepper motor 100 under test into the motor positioning slot 51 of the motor mounting base 5 so as to position the housing of the stepper motor 100 under test through the motor positioning slot 51. At this time, the limit block 52 is located on the right side of the housing of the stepper motor 100 under test. Step b: Push the movable push rod 6 to the right. The movable push rod 6 drives the housing pressure block 7 to move to the right in sync, so that the right end of the housing pressure block 7 contacts and presses against the housing of the stepper motor 100 under test located in the motor positioning groove 51. At this time, the housing pressure block 7 cooperates with the limit block 52 to achieve the housing of the stepper motor 100 under test to be pressed and fixed. Step c: After the stepper motor 100 under test is pressed and fixed by the housing pressure block 7 and the limit block 52, the measuring rod of the dial indicator 3 contacts and elastically abuts against the right end face of the rotor of the stepper motor 100 under test. At this time, the reading of the dial indicator 3 is recorded as A1. Step d: Move the drive lever 82 to push the rotor pressure rod 81 to the right, so that the rotor pressure rod 81 abuts the left end face of the rotor of the stepper motor 100 under test to the right; after the rotor pressure rod 81 moves to the right position, record the dial gauge 3 reading as A2, and the axial displacement value of the rotor of the stepper motor 100 under test is |A2-A1|. Step e: After the stepper motor 100 under test completes the rotor axial displacement detection, move the movable push rod 6 to the right to reset and make the housing pressure block 7 retract from the housing of the stepper motor 100 under test. Then, the stepper motor 100 under test can be removed from the motor positioning slot 51 of the motor mounting base 5. Repeat the above steps a-d to complete the rotor axial displacement detection of other stepper motors 100 under test.

[0026] In summary, the novel stepper motor rotor axial displacement detection fixture of this embodiment has the advantages of novel structural design and convenient operation, and can be effectively applied to the detection of stepper motor rotor axial displacement through the above structural design.

[0027] Example 2, as Figures 1 to 4 As shown, the difference between this embodiment 2 and embodiment 1 is that: the right end of the housing pressure block 7 is provided with an annular pressure holding part 71 that protrudes to the right and is in the shape of a ring, the housing pressure block 7 has a pressure rod mounting hole 72 on the inner side of the annular pressure holding part 71, the rotor pressure rod 81 is slidably embedded in the pressure rod mounting hole 72, and the lower end of the drive swing rod 82 extends into the pressure rod mounting hole 72.

[0028] When the housing pressure block 7 and the limit stop block 52 cooperate to press and fix the housing of the stepper motor 100 under test, the housing pressure block 7 abuts against the housing of the stepper motor 100 under test through the annular pressing part 71. The circular annular pressing part 71 can effectively avoid the rotor of the stepper motor 100 under test, so as to avoid interference between the housing pressure block 7 and the rotor of the stepper motor 100 under test, thereby improving the stability and reliability of the testing operation.

[0029] Example 3, as Figure 3 and Figure 4 As shown, the difference between this embodiment 3 and embodiment 2 is that: a pressure rod shoulder 811 is provided at the left end of the rotor pressure rod 81, and a pressure block shoulder 73 located on the right side of the pressure rod shoulder 811 is provided on the inner wall of the pressure rod mounting hole 72.

[0030] It should be noted that when the rotor pressure rod 81 slides to the right relative to the housing pressure block 7 to the limit position, the pressure rod shoulder 811 abuts against the pressure block shoulder 73.

[0031] By designing the pressure bar shoulder 811 and the pressure block shoulder 73, this embodiment can effectively prevent the rotor pressure bar 81 from exiting to the right from the pressure bar mounting hole 72.

[0032] Example 4, as Figure 2 and Figure 4 As shown, the difference between this embodiment four and embodiment one is that the right end of the rotor pressure rod 81 is provided with a pressure holding needle portion 812 that protrudes to the right.

[0033] It should be noted that the pressure needle part 812 can effectively prevent the rotor pressure rod 81 from interfering with the housing of the stepper motor 100 under test, thereby improving the stability and reliability of the testing operation.

[0034] Example 5, as Figures 1 to 4 As shown, the difference between this fifth embodiment and the first embodiment is that the left end of the movable push rod 6 extends to the left end of the push rod fixing seat 4, and the left end of the movable push rod 6 is equipped with a connecting block 91.

[0035] The connecting block 91 is equipped with a guide rod 92 that extends in a straight line along the left and right direction. The push rod fixing seat 4 has a guide hole 42 corresponding to the guide rod 92, and the guide rod 92 is inserted into the guide hole 42 of the push rod fixing seat 4.

[0036] During the left and right movement of the movable push rod 6, the guide rod 92 slides left and right along the guide hole 42 of the push rod fixing seat 4; by cooperating with the guide rod 92 and the guide hole 42, this embodiment can effectively prevent the movable push rod 6 from rotating relative to the push rod fixing seat 4, thereby effectively ensuring the stability of the position of the drive swing rod 82.

[0037] The above description is only a preferred embodiment of this utility model. For those skilled in the art, there will be changes in the specific implementation method and application scope based on the idea of ​​this utility model. The content of this specification should not be construed as a limitation of this utility model.

Claims

1. A novel stepper motor rotor axial displacement detection fixture, comprising a base (1), a dial indicator mounting base (2) mounted on the base (1), and a dial indicator (3) mounted on the dial indicator mounting base (2). Its features are: The base (1) is also equipped with a push rod fixing seat (4) and a motor fixing seat (5). The push rod fixing seat (4), the motor fixing seat (5), and the dial indicator fixing seat (2) are arranged alternately from left to right. The upper end of the motor mounting base (5) is provided with a motor positioning groove (51), and a limit stop (52) is provided on the right side of the upper end of the motor mounting base (5) at the motor positioning groove (51). The upper end of the push rod fixing seat (4) is provided with a push rod mounting hole (41) that runs through the left and right directions. A movable push rod (6) is slidably embedded in the push rod mounting hole (41). The right end of the movable push rod (6) is provided with a housing pressure block (7) located on the right side of the push rod fixing seat (4). The housing pressure block (7) is slidably mounted with a rotor pressure rod (81) on the left and right sides. The housing pressure block (7) is hinged with a drive swing rod (82) on the left side of the rotor pressure rod (81) via a pivot (83).

2. The novel stepper motor rotor axial displacement detection fixture according to claim 1, characterized in that: The right end of the housing pressure block (7) is provided with an annular pressing part (71) that protrudes to the right and is in the shape of a ring. The housing pressure block (7) has a pressure rod mounting hole (72) on the inner side of the annular pressing part (71). The rotor pressure rod (81) is slidably embedded in the pressure rod mounting hole (72). The lower end of the drive swing rod (82) extends into the pressure rod mounting hole (72).

3. A novel stepper motor rotor axial displacement detection fixture according to claim 2, characterized in that: The left end of the rotor pressure rod (81) is provided with a pressure rod shoulder (811), and the inner wall of the pressure rod mounting hole (72) is provided with a pressure block shoulder (73) located on the right side of the pressure rod shoulder (811). When the rotor pressure bar (81) slides to the right relative to the housing pressure block (7) to the limit position, the pressure bar shoulder (811) abuts against the limit position of the pressure block shoulder (73).

4. A novel stepper motor rotor axial displacement detection fixture according to claim 1, characterized in that: The right end of the rotor pressure rod (81) is provided with a pressure needle (812) that protrudes to the right.

5. A novel stepper motor rotor axial displacement detection fixture according to claim 1, characterized in that: The left end of the movable push rod (6) extends to the left end of the push rod fixing seat (4), and the left end of the movable push rod (6) is equipped with a connecting block (91). The connecting block (91) is equipped with a guide rod (92) that extends in a straight line along the left and right direction. The push rod fixing seat (4) has a guide hole (42) corresponding to the guide rod (92). The guide rod (92) is inserted into the guide hole (42) of the push rod fixing seat (4).

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