A special gauge for combining tooth end face run-out

Abstract

The utility model discloses a kind of special gauges for combining tooth end face run-out, including detection mechanism, screw rod mechanism, for the expansion positioning mechanism of the positioning of combining tooth, expansion positioning mechanism includes base, support cover, expansion sleeve, pressing plate, handle, expansion core is equipped on base, screw rod, the outer circumferential surface of expansion core is taper surface, screw rod passes through expansion core, one end of screw rod is fixed with base, handle is threadedly connected with the other end of screw rod, pressing plate is sheathed on screw rod, pressing plate is located between expansion sleeve and handle;The inner surface of expansion sleeve is taper surface, expansion sleeve is sheathed on expansion core, expansion sleeve and expansion core are matched by taper surface, expansion sleeve is equipped with multiple grooves distributed along circumference, in two adjacent grooves, the notch of one groove is arranged at one end of expansion sleeve, the notch of another groove is arranged at the other end of expansion sleeve, and expansion sleeve is formed at the two ends respectively for expansion joint tooth expansion expansion petal, the utility model solves the technical problem of low measurement accuracy.

Description

Technical Field

[0001] This utility model relates to the field of synchronizer technology, specifically to a special inspection tool for the runout of the tooth end face. Background Technology

[0002] The engagement teeth are a crucial component of a synchronizer. To ensure the synchronizer's smooth operation, reliability, and overall performance, it's necessary to detect the runout of the engagement tooth's end face relative to its inner diameter. The typical detection method is coordinate measuring machine (CMM). The CMM measurement process includes establishing a reference datum, setting the measurement path, data acquisition, and data analysis and calculation. Since steps such as establishing the reference datum (if the inner diameter cylindrical reference is too short) and setting the measurement path require manual configuration, it demands a high level of technical skill from the surveyor. Furthermore, the probe may exhibit angular and positional deviations when contacting the tooth end face, which, combined, can easily lead to significant measurement errors and low accuracy. Summary of the Invention

[0003] This invention provides a special inspection tool for tooth end face runout, which solves the above-mentioned technical problem of low measurement accuracy.

[0004] The technical solution of this utility model is as follows: A special inspection tool for the runout of the end face of a mating tooth includes: a detection mechanism for detecting the mating tooth; a screw mechanism for controlling the movement and positioning of the detection mechanism; and a tightening and positioning mechanism for positioning the mating tooth. The tightening and positioning mechanism includes a base, a support sleeve, an expansion sleeve, a pressure plate, and a handle. The base is provided with an expansion core and a screw. The outer circumferential surface of the expansion core is a conical surface. The screw passes through the expansion core. One end of the screw is fixed to the base. The handle is threaded to the other end of the screw. The pressure plate is loosely fitted on the screw and is located between the expansion sleeve and the handle. The inner surface of the expansion sleeve is a conical surface. The expansion sleeve is fitted onto the expansion core, and the expansion sleeve and the expansion core are engaged by the conical surface. The expansion sleeve is provided with multiple grooves distributed along the circumference. In two adjacent grooves, the opening of one groove is located at one end of the expansion sleeve, and the opening of the other groove is located at the other end of the expansion sleeve. Expansion flaps for tightening the engagement teeth are formed at both ends of the expansion sleeve.

[0005] Furthermore, the expansion sleeve is also provided with a first step, a second step, and a third step. The first step and the third step are both located on the inner circumferential surface of the expansion sleeve. The first step is located at the lower part of the expansion sleeve, the third step is located at the upper part of the expansion sleeve, and the second step is located on the outer circumferential surface of the middle part of the expansion sleeve.

[0006] Furthermore, the testing mechanism includes a movable slide, a support, a digital dial indicator, a digital dial indicator connector, and a probe. The movable slide is connected to the support, which has a through hole through which the probe passes. The probe is also connected to the digital dial indicator connector, and the digital dial indicator is connected to the digital dial indicator connector.

[0007] Furthermore, the lead screw mechanism includes a guide rail, a slider, a lead screw, a nut, and a knob. The slider is connected to the guide rail, and an opening is provided in the middle of the slider. The nut is fixedly connected to the slider after engaging with the opening. The nut is also engaged with the lead screw, and the lead screw is connected to the knob.

[0008] In this invention, the components of the expansion and positioning mechanism cooperate to expand and position the workpiece under test. The position of the detection mechanism is adjusted by a lead screw mechanism. After determining a suitable position, the digital dial indicator is further adjusted, and the probe is aligned with the measured part of the workpiece. Data is recorded by rotating the workpiece. Because the expansion and positioning mechanism contains an expansion sleeve, the tester can rotate the handle to press down the pressure plate that cooperates with the handle. Since the outer circumferential surface of the expansion core and the inner surface of the expansion sleeve are both conical, the outer circumferential surface of the expansion core forms a compression on the inner surface of the expansion sleeve, causing the expansion flap on the expansion sleeve to move radially along the expansion core. Thus, the expansion sleeve expands and tightens the measured mating teeth. Therefore, when the tester rotates the measured mating teeth subsequently, the measured mating teeth will not produce errors or offsets in the radial direction, ensuring the accuracy of the measurement and having the advantage of high precision. Attached Figure Description

[0009] Figure 1 This is a three-dimensional view of a special inspection tool for tooth end face runout.

[0010] Figure 2 This is a cross-sectional view of a special inspection tool for tooth end face runout.

[0011] Figure 3 This is a three-dimensional view of the core expansion section.

[0012] Figure 4 This is a cross-sectional view of the tensioning and positioning mechanism.

[0013] Figure 5 This is a three-dimensional view of the expansion sleeve.

[0014] Figure 6 This is a cross-sectional view of the expansion sleeve.

[0015] Figure 7 This is an exploded view of the lead screw mechanism.

[0016] Labels in the attached diagram: The components include: tooth A, base 1, expansion core 1a, outer peripheral surface 1b, screw 1c, support sleeve 2, protrusion 2a, expansion sleeve 3, first step 3a, second step 3b, third step 3c, groove 3d, circular hole 3e, pressure plate 4, handle 5, movable slide 6, bracket 7, digital dial indicator 8, digital dial indicator connector 9, probe 10, guide rail 11, slider 12, lead screw 13, nut 14, and knob 15. Detailed Implementation

[0017] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0018] like Figures 1 to 7 As shown, a special inspection tool for the end face runout of a mating tooth includes a detection mechanism for detecting mating tooth A, a screw mechanism for controlling the movement and positioning of the detection mechanism, and a tightening and positioning mechanism for positioning the mating tooth. The tightening and positioning mechanism includes a base 1, a support sleeve 2, an expansion sleeve 3, a pressure plate 4, and a handle 5. The base 1 is provided with an expansion core 1a and a screw 1c. The outer peripheral surface 1b of the expansion core 1a is a conical surface. The screw 1c passes through the expansion core 1a. One end of the screw 1c is fixed to the base 1. The handle 5 is threadedly connected to the other end of the screw 1c. The pressure plate 4 is loosely fitted on the screw 1c and is located between the expansion sleeve 3 and the handle 5.

[0019] The inner surface of the expansion sleeve 3 is conical. The expansion sleeve 3 is fitted onto the expansion core 1a, and the expansion sleeve 3 and the expansion core 1a are engaged by the conical surface. The expansion sleeve 3 has multiple grooves 3d distributed circumferentially. In two adjacent grooves 3d, the opening of one groove 3d is located at one end of the expansion sleeve 3, and the opening of the other groove 3d is located at the other end of the expansion sleeve 3. Expansion flaps for tightening the engagement teeth A are formed at both ends of the expansion sleeve 3. For example, if the grooves 3d on the expansion sleeve are sequentially divided into the first groove, the second groove, the third groove, and the fourth groove, then an expansion flap is formed between the first groove 3d and the third groove, and between the second groove 3d and the fourth groove 3d, and so on. That is, expansion flaps are formed between adjacent odd-numbered grooves 3d and between adjacent even-numbered grooves 3d. A circular hole 3e is also provided at the end of the groove 3d. The circular hole 3e is used to prevent the expansion sleeve 3 from breaking due to the excessive length of the groove 3d.

[0020] The expansion sleeve 3 is further provided with a first step 3a, a second step 3b, and a third step 3c. The first step 3a and the third step 3b are both located inside the expansion sleeve 3. The first step 3a is located on the lower inner circumferential surface of the expansion sleeve 3, the third step 3b is located on the middle outer circumferential surface of the expansion sleeve 3, and the third step 3c is located on the upper outer circumferential surface of the expansion sleeve 3. The support sleeve 2 is provided with a protrusion 2a. The second step 3b engages with the protrusion 2a, and the protrusion 2a provides axial restraint for the second step 3b. The pressure plate 4 is located inside the expansion sleeve 3, and the third step 3c supports the pressure plate 4.

[0021] The testing mechanism includes a movable slide 6, a support 7, a digital micrometer 8, a digital micrometer connector 9, and a probe 10. The support 7 is Z-shaped. The movable slide 6 is connected to the lower horizontal surface of the support 7. A through hole is provided on the upper horizontal surface of the support 7. The probe 10 passes through the through hole on the support 7. The probe 10 is also connected to the digital micrometer connector 9. The digital micrometer 8 is connected to the digital micrometer connector 9.

[0022] The lead screw mechanism includes a guide rail 11, a slider 12, a lead screw 13, a nut 14, and a knob 15. The slider 12 is slidably connected to the guide rail 11. An opening is provided in the middle of the slider 12. The nut 14 is fixedly connected to the slider 12 after engaging with the opening. The nut 14 is threadedly engaged with the lead screw 13. The lead screw 13 is connected to the knob 15.

[0023] The specific usage of this utility model is as follows: After the test tooth A is loosely fitted onto the expansion sleeve 3, the support sleeve 2 provides support for the test tooth A. Rotating the handle 5 causes it to move downward along the screw 1c due to the threaded engagement between the handle 5 and the screw 1c. The handle 5 pushes the pressure plate 4 downward along the screw 1c, and the pressure plate 4 pushes the expansion sleeve 3 to move axially along the expansion core 1a. Since the expansion sleeve 3 and the expansion core 1a are engaged by a conical surface, the expansion core 1a exerts a radial squeezing force on the expansion sleeve 3 as the expansion sleeve 3 moves downward along the expansion core 1a, causing the expansion valve in the expansion sleeve 3 to expand. The expansion sleeve 3 then exerts a tightening force on the test tooth A. Then, turn knob 15 to move the lead screw mechanism to shift the detection mechanism and adjust it to a suitable position. Further adjust the digital micrometer connector 9 so that the probe 10 makes contact with the end face of the tooth A being measured. Then apply torque to the tooth A being measured to make it rotate (the expansion sleeve 3 rotates with the tooth A being measured). Since the end face of the probe 10 is not flat, the reading of the digital micrometer 8 will change. Record the range of the value change, and the difference between the maximum value and the minimum value is the runout value.

Claims

1. A special inspection tool for tooth end face runout, comprising: Testing facilities for testing mating teeth (A); Screw mechanism used to control the movement and positioning of the detection mechanism: The feature is that it also includes an expansion positioning mechanism for positioning the mating teeth. The expansion positioning mechanism includes a base (1), a support sleeve (2), an expansion sleeve (3), a pressure plate (4), and a handle (5). The base (1) is provided with an expansion core (1a) and a screw (1c). The outer peripheral surface (1b) of the expansion core (1a) is a conical surface. The screw (1c) passes through the expansion core (1a). One end of the screw (1c) is fixed to the base (1). The handle (5) is threaded to the other end of the screw (1c). The pressure plate (4) is loosely fitted on the screw (1c). The pressure plate (4) is located between the expansion sleeve (3) and the handle (5). The inner surface of the expansion sleeve (3) is a conical surface. The expansion sleeve (3) is fitted onto the expansion core (1a). The expansion sleeve (3) and the expansion core (1a) are engaged by the conical surface. The expansion sleeve (3) is provided with a plurality of grooves (3d) distributed along the circumference. In two adjacent grooves (3d), the opening of one groove (3d) is located at one end of the expansion sleeve (3), and the opening of the other groove (3d) is located at the other end of the expansion sleeve (3). Expansion flaps for tightening the engagement teeth (A) are formed at both ends of the expansion sleeve (3).

2. The special inspection tool for tooth end face runout according to claim 1, characterized in that, The expansion sleeve (3) is also provided with a first step (3a), a second step (3b) and a third step (3c). The first step (3a) and the third step (3c) are both located on the inner circumferential surface of the expansion sleeve (3). The first step (3a) is located at the lower part of the expansion sleeve (3), the third step (3c) is located at the upper part of the expansion sleeve (3), and the second step (3b) is located on the outer circumferential surface of the middle part of the expansion sleeve (3).

3. The special inspection tool for tooth end face runout according to claim 1, characterized in that, The testing mechanism includes a movable slide (6), a bracket (7), a digital micrometer (8), a digital micrometer connector (9), and a probe (10). The movable slide (6) is connected to the bracket (7), and the bracket (7) has a through hole. The probe (10) passes through the through hole on the bracket (7). The probe (10) is also connected to the digital micrometer connector (9). The digital micrometer (8) is connected to the digital micrometer connector (9).

4. A special inspection tool for tooth end face runout according to claim 1, characterized in that, The lead screw mechanism includes a guide rail (11), a slider (12), a lead screw (13), a nut (14), and a knob (15). The slider (12) is connected to the guide rail (11). An opening is provided in the middle of the slider (12). The nut (14) is fixedly connected to the slider (12) after it is fitted with the opening. The nut (14) is fitted with the lead screw (13). The lead screw (13) is connected to the knob (15).

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