Full-size testing fixture for precision spring

Abstract

The utility model relates to a precision spring full-size gauge, which belongs to the technical field of spring detection and comprises a detection sleeve and a detection shaft, a cylindrical counter bore is arranged on the detection sleeve, the detection sleeve is used for detecting the outer diameter and the free height of a precision spring, and the detection shaft is provided with an insertion shaft for detecting the inner diameter of the precision spring. A cylindrical counter bore in the detection sleeve is matched with an insertion shaft on the detection shaft, so that the coaxiality of the precision spring can be detected; the cylindrical counter bore is divided into a detection groove and an insertion groove, the diameter of the detection groove is equal to the limit size of the outer diameter of the standard precision spring, and the depth of the detection groove is equal to the free height size of the standard precision spring; according to the utility model, through the cooperation of the detection sleeve and the detection shaft, the free height, the spring outer diameter, the spring inner diameter and the coaxiality of the precision spring can be detected, the detection is convenient and fast, manual detection with a measuring tool for multiple times is not needed, the detection efficiency of the precision spring is greatly improved, and the labor intensity of detection personnel is reduced.

Description

Technical Field

[0001] The utility model relates to a full-size inspection tool for a precision spring, belonging to the technical field of spring inspection. Background Art

[0002] Precision springs are elastic components with high precision, high performance and high reliability. Precision springs are usually made of high-quality metal materials through a series of complex and sophisticated processing processes to ensure that they meet extremely high standards in terms of size, elastic coefficient, fatigue life, etc. Precision springs are widely used in various precision instruments and equipment.

[0003] With the development of high-tech industry, the performance and size requirements for precision springs are becoming more and more stringent. The free height, outer diameter, inner diameter and coaxiality of precision springs need to be tested. At present, it mainly relies on manual use of vernier calipers and other measuring tools for multiple measurements. The process is cumbersome, the detection efficiency is low, and the labor intensity of the inspectors is high. Utility Model Content

[0004] In view of the above deficiencies in the prior art, the technical problem to be solved by the utility model is: to provide a full-size inspection fixture for precision springs, which can realize rapid inspection of the free height, spring outer diameter, spring inner diameter and coaxiality of precision springs without the need for manual inspection using measuring tools, thereby improving inspection efficiency and reducing the labor intensity of inspectors.

[0005] The precision spring full-size inspection tool described in the utility model comprises an inspection sleeve and an inspection shaft. The inspection sleeve is provided with a cylindrical countersunk hole, and the inspection sleeve is used to detect the outer diameter and free height of the precision spring. The inspection shaft is provided with an insert shaft for detecting the inner diameter of the precision spring. The cylindrical countersunk hole on the inspection sleeve and the insert shaft on the inspection shaft cooperate to detect the coaxiality of the precision spring.

[0006] The technical solution of the utility model is to provide a full-size inspection tool for precision springs, which can detect the free height, spring outer diameter, spring inner diameter and coaxiality of precision springs through the cooperation of an inspection sleeve and an inspection shaft, so that the inspection is convenient and fast, and the inspection efficiency is improved.

[0007] Preferably, the cylindrical countersunk hole is divided into a detection groove and a slot, the diameter of the detection groove is equal to the outer diameter limit dimension of the standard precision spring, and the depth of the detection groove is equal to the free height dimension of the standard precision spring.

[0008] Furthermore, the slot of the detection sleeve is matched with the insertion shaft of the detection shaft, and the insertion shaft has the same inner diameter limit size as the standard precision spring; the detection shaft is provided with a handle for easy gripping.

[0009] Preferably, an avoidance groove A is provided at the junction of the plug shaft and the handle to prevent interference with the spring during detection.

[0010] Preferably, an avoidance groove B is provided on one end of the detection groove close to the slot to prevent interference with the spring.

[0011] Furthermore, the detection slot is coaxial with the slot, and both ends of the slot are provided with chamfered corners.

[0012] Compared with the prior art, the utility model has the following beneficial effects:

[0013] The precision spring full-size inspection fixture of the utility model can inspect the free height, spring outer diameter, spring inner diameter and coaxiality of the precision spring through the cooperation of the inspection sleeve and the inspection shaft. The inspection is convenient and quick, and there is no need to manually use measuring tools for multiple inspections, which greatly improves the inspection efficiency of the precision spring and reduces the labor intensity of the inspectors. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the state when the utility model is in use;

[0015] Figure 2 It is the main view of the detection axis;

[0016] Figure 3 It is a cross-sectional view of the detection sleeve.

[0017] In the figure: 1. detection shaft; 11. handle; 12. avoidance groove A; 13. plug-in shaft; 2. detection sleeve; 21. detection groove; 22. avoidance groove B; 23. slot; 3. precision spring. DETAILED DESCRIPTION

[0018] The utility model is further described below in conjunction with specific embodiments.

[0019] However, the description of the present invention is merely an embodiment of structural and even functional description, and the scope of rights of the present invention is not limited by the embodiments described in the text.

[0020] For example, multiple embodiments may have multiple changes and multiple forms, and it should be understood that the scope of rights of the present utility model includes equivalents that can realize the technical idea.

[0021] like Figures 1 to 3 As shown, this embodiment is implemented through the following technical scheme: it includes a detection sleeve 2 and a detection shaft 1, the detection sleeve 2 is provided with a cylindrical countersunk hole, the detection sleeve 2 is used to detect the outer diameter and free height of the precision spring, the detection shaft 1 is provided with an inserted shaft 13 for detecting the inner diameter of the precision spring, the cylindrical countersunk hole on the detection sleeve 2 and the inserted shaft 13 on the detection shaft 1 cooperate, and can be used to detect the coaxiality of the precision spring.

[0022] In this embodiment, the cylindrical countersunk hole is divided into a detection groove 21 and a slot 23. The diameter of the detection groove 21 is equal to the outer diameter limit size of the standard precision spring, and the depth of the detection groove 21 is equal to the free height size of the standard precision spring. The slot 23 of the detection sleeve 2 is adapted to the plug shaft 13 of the detection shaft 1, and the plug shaft 13 is equal to the inner diameter limit size of the standard precision spring; the detection shaft 1 is provided with a handle 11 for easy grip. An avoidance groove A12 is provided at the junction of the plug shaft 13 and the handle 11 to prevent interference with the spring during detection. An avoidance groove B22 is provided at one end of the detection groove 21 close to the slot 23 to prevent interference with the spring. The detection groove 21 is coaxial with the slot 23, and both ends of the slot 23 are provided with chamfers to allow the plug shaft 13 to be smoothly inserted into the slot 23.

[0023] The method of using the utility model is:

[0024] 1. Place the precision spring 3 to be tested into the testing groove 21, and test the tightness of the spring and the testing groove 21 to check whether the outer diameter of the spring is qualified;

[0025] 2. Observe whether the free height of the precision spring 3 is consistent with the depth of the detection groove 21 to detect the free height of the spring;

[0026] 3. Hold the handle 11 and insert the insertion shaft 13 of the detection shaft 1 into the precision spring 3 and the slot 23 in sequence, test whether the insertion shaft 13 can insert the spring and the slot 23 and the tightness of the spring and the insertion shaft 13, so as to detect whether the inner diameter and coaxiality of the spring are qualified.

[0027] Of course, the above contents are only preferred embodiments of the present invention and cannot be considered to limit the scope of the embodiments of the present invention. The present invention is not limited to the above examples, and any equivalent changes and improvements made by ordinary technicians in the technical field within the essential scope of the present invention shall fall within the scope of the patent coverage of the present invention.

Claims

1. A full-size precision spring gauge, characterized in that: The invention comprises a detection sleeve (2) and a detection shaft (1), wherein the detection sleeve (2) is provided with a cylindrical countersunk hole, and the detection shaft (1) is provided with an insertion shaft (13) for detecting the inner diameter of a precision spring. The cylindrical countersunk hole on the detection sleeve (2) cooperates with the insertion shaft (13) on the detection shaft (1) to detect the coaxiality of the precision spring. The cylindrical countersunk hole is divided into a detection groove (21) and a slot (23), wherein the diameter of the detection groove (21) is equal to the outer diameter limit size of a standard precision spring, and the depth of the detection groove (21) is equal to the free height size of a standard precision spring.

2. The full-size precision spring gauge according to claim 1 is characterized in that: The slot (23) of the detection sleeve (2) is matched with the insertion shaft (13) of the detection shaft (1), and the insertion shaft (13) has an inner diameter limit size equal to that of a standard precision spring; 3. The full-size precision spring gauge according to claim 2 is characterized in that: The detection shaft (1) is provided with a handle (11) that is easy to hold.

4. The full-size precision spring gauge according to claim 3 is characterized in that: An avoidance groove A (12) is provided at the junction of the insertion shaft (13) and the handle (11).

5. The full-size precision spring gauge according to claim 1 is characterized in that: An avoidance groove B (22) is provided on one end of the detection groove (21) close to the slot (23).

6. The full-size precision spring gauge according to claim 5, characterized in that: The detection slot (21) is coaxial with the slot (23), and both ends of the slot (23) are provided with rounded corners.

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