Detection tool for measuring run-out of internal spline and excircle
By designing a gauge that includes a base and a spline positioning body, the problem of difficult detection of internal spline and external circle runout is solved, achieving simple and efficient measurement and cost-effective detection results.
Patent Information
- Application Number
- CN202520268614.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-19
- Publication Date
- 2026-01-13
- Estimated Expiration
- 2035-02-19
AI Technical Summary
Existing technologies are difficult to use easily and efficiently to detect internal splines and external circular runout, and there is a lack of cost-effective dedicated inspection tools.
A gauge was designed that includes a base, a spline positioning body, and a dial indicator base. The spline positioning body slides smoothly with the base without clearance through a stabilizing mechanism. The dial indicator contacts the outer circle of the workpiece being measured through the dial indicator base and rotates the workpiece to measure the runout data.
It achieves simple and efficient measurement, high data accuracy, is suitable for mass production, and has low cost and high cost performance.
Smart Images
Figure CN223795962U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to spline detection field, especially a kind of measuring inner spline and outer circle run-out testing fixture. BACKGROUND
[0002] With the rapid development of mechanical industry represented by automobile, the precision requirement of involute spline class parts is also higher and higher, so many customers have more and more detection requirements for spline, and the run-out detection of inner spline and outer circle is one of them.
[0003] The run-out of inner spline and outer circle, i.e. coaxiality, is difficult to detect by naked eye, and many spline class parts are often non-standard parts and belong to customized parts, which need to be designed and produced according to different use environment and use purpose, so there is no special simple detection equipment in the industry to detect the run-out of spline, and the standard testing fixture in the industry is expensive and has no cost performance, therefore, a simple and efficient targeted testing fixture is needed to detect the run-out of inner spline and outer circle of spline parts. UTILITY MODEL CONTENTS
[0004] The utility model aims at providing a kind of measuring inner spline and outer circle run-out testing fixture, which has the advantages of selective protection mode.
[0005] The above technical purpose of the utility model is realized by the following technical scheme:
[0006] A kind of measuring inner spline and outer circle run-out testing fixture, including base, spline positioning body, table seat, the spline positioning body is positioned in the middle of the base to spline, the table seat is located at one side of the base to detect spline, the spline positioning body includes upper positioning body, lower positioning body, stabilizing mechanism, nut, the nut is fixed to the bottom surface of the base, the lower positioning body is screw rod with thread in the bottom, the lower positioning body is connected with the nut by screwing through the base, the upper positioning body is fixed above the lower positioning body, the height of the upper positioning body is adjusted by the connection of the lower positioning body and nut, the stabilizing mechanism is located at the connecting place of the upper positioning body and the lower positioning body to balance the spline positioning body and stabilize.
[0007] As a preferred, the stabilizing mechanism is a disc with outer baffle and inner baffle, the middle part of the base is provided with a pit, the bottom of the disc is matched with the pit, the disc is embedded in the pit, the outer baffle is attached to the side wall of the pit, the inner diameter of the inner baffle is matched with the size of the bottom cylindrical of the upper positioning body, the stabilizing mechanism limits the spline positioning body to stabilize, so that the upper part of the spline positioning body is not unstable and affects the detection of spline due to too high.
[0008] As preferred, the table seat comprises a base plate, a longitudinal support plate, a transverse support plate, a micrometer, an adjusting mechanism, the base plate is fixed to one side of the base, the longitudinal support plate is fixed to the upper part of the base plate, the transverse support plate is fixed to the middle part of the longitudinal support plate, the longitudinal support plate is provided with a through hole, the micrometer is located on the surface of the transverse support plate and detects the spline by penetrating the longitudinal support plate, and the adjusting mechanism is located on one side of the transverse support plate and adjusts the position of the micrometer.
[0009] As preferred, the adjusting mechanism comprises a threaded rod and an adjusting plate, the adjusting plate is vertically fixed to the surface of one end of the transverse support plate, a threaded hole is formed in the middle part of the adjusting plate, and the threaded rod is threadedly connected with the adjusting plate by penetrating the threaded hole.
[0010] As preferred, the micrometer is fixedly connected with a pad block on the side close to the threaded rod.
[0011] As preferred, the lower part of the base is fixedly connected with four base feet.
[0012] By adopting the above technical scheme, the spline positioning body is in gapless sliding fit with the base and is fixed on the base by a screw, the table seat is fixed on the base, the micrometer passes through the table seat and is positioned at the position of the outer circle of the external workpiece, the measured internal spline is placed on the spline positioning body, the micrometer contacts the outer circle of the measured workpiece, the workpiece is rotated, and the variation of the micrometer is the runout data of the external circle relative to the spline.
[0013] The micrometer has the advantages that: 1. measurement is simple and efficient, the workpiece is placed and rotated to achieve the measurement effect; 2. the measurement data has high accuracy and has great improvement compared with naked eye measurement; 3. the micrometer has good applicability and is particularly suitable for measuring the internal spline and the external circle runout in a large quantity of production sites; and 4. the micrometer is cheap and has low cost and high performance-price ratio. BRIEF DESCRIPTION OF DRAWINGS
[0014] Fig. 1 It is a structural schematic view of an embodiment;
[0015] Fig. 2 It is a structural schematic view of a spline positioning body;
[0016] Fig. 3 It is a structural schematic view of a table seat.
[0017] Reference numerals: 1. Base; 2. Foot; 3. Gauge base; 4. Splined positioning body; 5. Stabilizing mechanism; 6. Nut; 7. Lower positioning body; 8. Screw; 9. Outer baffle; 10. Disc; 11. Inner baffle; 12. Base plate; 13. Longitudinal support plate; 14. Through hole; 15. Dial indicator; 16. Threaded rod; 17. Threaded hole; 18. Adjusting plate; 19. Pad; 20. Transverse support plate; 21. Upper positioning body. Detailed Implementation
[0018] The following description is merely a preferred embodiment of this utility model, and the scope of protection is not limited to this embodiment. All technical solutions falling within the scope of this utility model should be considered within the protection scope of this utility model. It should also be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.
[0019] See Figs. 1 to 3 A gauge for measuring the runout of internal splines and external circles, with attachment Fig. 1 As shown, it includes a base, a spline positioning body, and a dial indicator. The base is fixedly connected to four feet at the bottom. The spline positioning body is located in the middle of the base to position the spline, and the dial indicator is located on one side of the base to detect the spline.
[0020] With attachment Fig. 2 As shown, the spline positioning body includes an upper positioning body, a lower positioning body, a stabilizing mechanism, and a nut. The nut is fixed to the bottom surface of the base. The lower positioning body is a screw with threads on the bottom. The lower positioning body passes through the base and is threadedly connected to the nut. The upper positioning body is fixed above the lower positioning body. Its height is adjusted by connecting the lower positioning body to the nut. The stabilizing mechanism is located at the connection between the upper and lower positioning bodies and plays a balancing and stabilizing role for the spline positioning body.
[0021] The stabilizing mechanism is a disc with an outer and an inner baffle. A recess is provided in the middle of the base, and the bottom of the disc fits into the recess. The disc is embedded in the recess, the outer baffle is attached to the side wall of the recess, and the inner diameter of the inner baffle matches the cylindrical size of the bottom of the upper positioning body. The stabilizing mechanism plays a role in limiting and stabilizing the spline positioning body, preventing the upper part from becoming unstable due to the spline positioning body being too high, which would affect the spline detection.
[0022] When inspecting splines, first select a suitable spline locator. Then, pass the lower locator through the base, so that the screw of the lower locator is threadedly connected to the nut on the base. This adjusts the height of the upper locator so that the spline inspection area is at the same height as the inspection part of the upper locator, allowing for better inspection and obtaining more accurate data.
[0023] Then according to the size of the upper positioning body, select the appropriate stabilizing mechanism, namely the inner blocking wall and the upper positioning body lower part fit the disc, stabilizing mechanism is fixed in the base recess, the inner blocking wall of the disc to the bottom of the upper positioning body plays a positioning role, avoid its shaking or shaking and affect the accuracy of detection.
[0024] With the attached Fig. 3 As shown, the table seat includes a bottom plate, a longitudinal support plate, a transverse support plate, a micrometer, an adjusting mechanism, the bottom plate is fixed on one side of the base, the vertical support plate is fixed on the upper part of the bottom plate, the transverse support plate is fixed on the middle part of the longitudinal support plate, the longitudinal support plate is provided with a through hole, the micrometer is located on the surface of the transverse support plate, and the spline is detected by passing through the longitudinal support plate, and the adjusting mechanism is located on one side of the transverse support plate to adjust the position of the micrometer.
[0025] The adjusting mechanism includes a threaded rod and an adjusting plate, the adjusting plate is vertically fixed on the surface of one end of the transverse support plate, a threaded hole is formed in the middle part of the adjusting plate, the threaded rod is threaded into the threaded hole and is screwed with the adjusting plate, and the micrometer is fixedly connected with a pad close to the side of the threaded rod, so that the threaded rod and the micrometer are directly abutted to avoid damaging the micrometer.
[0026] Working principle: the utility model discloses a spline positioning body and base gapless sliding fit, and is fixed on the base by screw, the table seat is fixed on the base, the micrometer passes through the table seat, and is positioned at the position of the outer circle of the workpiece, the measured internal spline is placed on the spline positioning body, the micrometer contacts on the outer circle of the measured workpiece, and the workpiece is rotated, and the change of the micrometer is the runout data of the outer circle relative to the spline.
[0027] The utility model has the advantages of simple and convenient measurement, high efficiency, high accuracy of measurement data, good applicability, especially suitable for large quantities of production site of measuring internal spline and outer circle runout, low cost, low cost, high performance price ratio and other advantages.
Claims
1. A gauge for measuring the runout of an internal spline and its outer diameter, comprising a base, a spline positioning body, and a gauge base, wherein the spline positioning body is located in the middle of the base to position the spline, and the gauge base is located on one side of the base to inspect the spline, characterized in that, The spline positioning body comprises an upper positioning body, a lower positioning body, a stabilizing mechanism and a nut, the nut is fixed to the bottom surface of the base, the lower positioning body is a threaded rod with a bottom thread, the lower positioning body is threadedly connected with the nut through the base, the upper positioning body is fixed above the lower positioning body, the height of the upper positioning body is adjusted through the connection of the lower positioning body and the nut, and the stabilizing mechanism is located at the connection position of the upper positioning body and the lower positioning body and plays a balancing and stabilizing role on the spline positioning body.
2. The measuring tool for measuring the runout of an inner spline and an outer circle according to claim 1, wherein The stabilizing mechanism is a disc with an outer baffle and an inner baffle, a recess is formed in the middle of the base, the bottom of the disc is matched with the recess, the disc is embedded in the recess, the outer baffle is attached to the side wall of the recess, the inner diameter of the inner baffle is matched with the size of the bottom cylinder of the upper positioning body, the stabilizing mechanism plays a limiting and stabilizing role on the spline positioning body, and the spline positioning body is prevented from being too high to affect the detection of the spline.
3. The measuring tool for measuring the runout of an inner spline and an outer circle according to claim 2, wherein The base seat comprises a bottom plate, a longitudinal support plate, a transverse support plate, a dial gauge and an adjusting mechanism, the bottom plate is fixed to one side of the base, the longitudinal support plate is fixed to the upper part of the bottom plate, the transverse support plate is fixed to the middle part of the longitudinal support plate, the longitudinal support plate is provided with a through hole, the dial gauge is located on the surface of the transverse support plate and detects the spline by penetrating the longitudinal support plate, and the adjusting mechanism is located on one side of the transverse support plate and adjusts the position of the dial gauge.
4. The measuring tool for measuring the runout of an inner spline and an outer circle according to claim 3, wherein The adjusting mechanism comprises a threaded rod and an adjusting plate, the adjusting plate is vertically fixed to one end surface of the transverse support plate, a threaded hole is formed in the middle of the adjusting plate, and the threaded rod is threadedly connected with the adjusting plate by penetrating the threaded hole.
5. The measuring tool for measuring the runout of internal spline and external circle according to claim 4, characterized in that, The dial gauge is fixedly connected with a pad close to one side of the threaded rod.
6. The measuring tool for measuring the runout of an inner spline and an outer circle according to claim 5, wherein Four bottom feet are fixedly connected to the lower part of the base.