Inner cavity size detection tool

Abstract

The utility model discloses an inner cavity size detection tool, which comprises a main body piece and a moving piece which is movably connected with the main body piece and extends to the outside of the main body piece to abut against the main body piece, and the main body piece is provided with a measuring area which is used for detecting the position opposite to the moving position of the tail end of the moving piece. A main body part and a moving part are arranged, the main body part is embedded into an inner cavity of a part, and after the moving part abuts against a reference surface of the inner cavity of the part, the main body part is pushed to enable the moving part to move by a certain position away from one end abutting against the reference surface of the inner cavity of the part; the detection tool has the advantages that the structure is simple, and whether the inner cavity and the depth of the part meet the production requirements or not can be detected.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of detection equipment, specifically relates to a inner chamber size detection instrument. BACKGROUND

[0002] When the part with inner chamber needs to detect whether its size meets the production requirement, the small space of the inner chamber causes certain influence on the stability of the measuring process, and the stable measurement is needed in the measuring process of the mass-produced part with inner chamber to meet the demand of detecting the inner chamber size and depth at the same time, and if the length, width and height dimensions inside are measured gradually and compared whether they fall into the qualified range, the detection method is more complicated, therefore it is necessary to develop an inner chamber size detection instrument. SUMMARY

[0003] The utility model discloses a kind of inner chamber size detection instruments, to solve above-mentioned technical problem, set up main part and moving piece, by main part embedding the inner chamber of part, and after making moving piece and the datum plane of part inner chamber be in contact, push main part to make moving piece move away from the end of the datum plane of part inner chamber be in contact certain position, the relative position of this position and measuring area is compared to carry out determination result, this kind of gauge structure is simple, whether the part inner chamber and depth meet the requirement of production can be detected.

[0004] To realize the above-mentioned utility model purpose, the technical scheme that the utility model takes is as follows:

[0005] A kind of inner chamber size detection instrument, including main part, with the movable connection of main part and extending to the contact of main part outside moving piece, the measuring area of the relative position of main part setting and moving piece end position is detected.Set up main part and moving piece, by main part embedding the inner chamber of part, and after making moving piece and the datum plane of part inner chamber be in contact, push main part to make moving piece move away from the end of the datum plane of part inner chamber be in contact certain position, the relative position of this position and measuring area is compared to carry out determination result, this kind of gauge structure is simple, whether the part inner chamber and depth meet the requirement of production can be detected.

[0006] Preferably, the moving piece includes a rod body, the rod body is provided with a contact end extending to the outside of the main body and being in contact, and a moving end at an end away from the contact end for detecting the relative position of the moving position of the moving end and the measuring area. The contact end is provided to contact the datum plane of the inner chamber of the part. After pushing the main body, the contact end is blocked by the datum plane, causing the relative movement between the rod body and the main body, and the moving end moves correspondingly. At this time, the relative position of the moving end and the measuring area is observed, and the determination result is compared. If it falls within the detection area, it is determined to be qualified. If it is outside the detection area, it is not qualified.

[0007] Preferably, the measuring area includes a lower limit measuring surface and an upper limit measuring surface sequentially arranged along the axial direction of the main body;

[0008] In the axial direction of the main body, the range between the lower and upper limit measuring planes is the qualified range. The relative position of the moving end is observed and compared with the range. If it falls within the qualified range, it is considered qualified. If it is outside the qualified range, such as if the moving end is above the upper limit measuring plane or below the lower limit measuring plane, it is considered unqualified.

[0009] Preferably, the main body is provided with an axial hole that cooperates with the moving member. Specifically, the axial hole cooperates with the rod body, and the axial hole is provided so that the moving member can move along the direction in which the axial hole is provided, so that when the rod body is in conflict with the reference surface, the other end of the moving end and the main body can move relative to each other.

[0010] Preferably, the movable parts and the measuring areas are arranged in one or more groups. In this technical solution, two groups are provided; wherein the shaft holes and the movable parts are arranged in groups corresponding to each other; the movable parts and the measuring areas are arranged in groups corresponding to each other, and two groups are provided symmetrically, so as to improve the measurement stability and provide multiple observation directions for easy operation.

[0011] Preferably, the moving part is connected to a restoring assembly that restores the moving part to its original position, and the restoring assembly is connected to the main part. The setting of the restoring assembly facilitates the resetting of the moving part and facilitates the next detection operation.

[0012] Preferably, the return assembly includes a spring having one end in contact with the inner surface of the shaft hole, and the rod body in contact with the other end of the spring. Utilizing the elasticity of the spring, with both ends of the spring respectively in contact with the shaft hole and the rod body, the spring is compressed during the test process. Upon completion of the test, the compressed spring returns to its original state, driving the rod body to move to its initial position.

[0013] Preferably, the rod body is provided with a conflicting block that conflicts with one end of the spring;

[0014] In the radial direction of the shaft hole, the width of the interference block is greater than the width of the rod body where the interference block is not provided. The interference block is provided to interfere with the spring, so that the rod body can return to its original state when not in interference. The larger width of the interference block prevents the spring from falling out.

[0015] Preferably, a gasket is provided on the side of the main member proximal to the abutting end, with the gasket having a first through-hole for the abutting end to extend to the outside. Specifically, the gasket is secured to the main member via a countersunk screw; the side of the abutting block distal to the spring initially abuts against the inner surface of the gasket, preventing the rod body from slipping out of the axial hole. This assembly method is simple and improves production efficiency.

[0016] Preferably, the cross-sectional width of the main body gradually decreases along the axial direction of the moving member toward the interference end.

[0017] This application has achieved beneficial technical effects:

[0018] The utility model is provided with a main part and a moving part. The main part is embedded in the inner cavity of the part, and after the moving part conflicts with the reference surface of the inner cavity of the part, the main part is pushed to move the moving part away from the end that conflicts with the reference surface of the inner cavity of the part to a certain position. The position is compared with the relative position of the measuring area and the result is judged. This kind of inspection tool has a simple structure and can detect whether the inner cavity and depth of the part meet the production requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 Shown is a schematic diagram of the explosion structure of the utility model;

[0020] Figure 2 Shown is a schematic structural diagram of the utility model;

[0021] Figure 3 Shown is a schematic diagram of the top structure of the utility model;

[0022] Figure 4 Shown is a side structural schematic diagram of the present utility model;

[0023] Figure 5 Shown is a bottom view structural diagram of the present invention;

[0024] Figure 6 Shown is a schematic diagram of the detection status comparison of the utility model.

[0025] Reference numerals

[0026] 1-main part; 2-moving part; 3-measuring area; 4-inner cavity; 5-reference surface; 21-rod body; 22-contact end; 23-moving end; 31-lower limit measuring surface; 32-upper limit measuring surface; 33-qualified interval; 11-axial hole; 6-spring; 211-contact block; 12-gasket; 121-first through hole. DETAILED DESCRIPTION

[0027] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the specific implementation methods of the present invention will be described below with reference to the accompanying drawings. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings and other implementation methods can be obtained based on these drawings without inventive work.

[0028] The technical solution of the present utility model is described in detail below with reference to specific embodiments.

[0029] Reference Figures 1 to 6 As shown, a tool for detecting inner cavity dimensions comprises a main body 1, a movable member 2 movably connected to the main body 1 and extending to contact the outside of the main body 1, and a measuring area 3 provided on the main body 1 for detecting the relative position of the movable end of the movable member 2. The main body 1 and movable member 2 are arranged, and after the main body 1 is embedded in the inner cavity of a part and the movable member 2 contacts the reference surface of the inner cavity of the part 4, the main body is pushed to move the movable member away from the end that contacts the reference surface 5 of the inner cavity of the part to a certain position. This position is compared with the relative position of the measuring area 3 and a determination result is made. This type of inspection tool has a simple structure and can detect whether the inner cavity and depth of a part meet production requirements.

[0030] The movable member 2 includes a rod body 21, which is provided with a contact end 22 extending to the outside of the main member 1 and interfering therewith. The rod body 21 is provided with a movable end 23 at one end away from the contact end 22 for detecting the relative position of its moving position and the measuring area 3. The contact end 22 is provided to interfere with the reference surface of the inner cavity of the part 4. After pushing the main member 1, the contact end 22 is blocked by the reference surface, causing relative movement between the rod body 21 and the main member 1, and the movable end 23 to move relative to it accordingly. At this time, the relative position of the movable end 23 and the measuring area 3 is observed and compared to determine the result. If it falls within the detection area, it is determined to be qualified; if it is outside the detection area, it is determined to be unqualified.

[0031] The measuring area 3 includes a lower limit measuring surface 31 and an upper limit measuring surface 32 arranged in sequence along the axial direction of the main body;

[0032] In the axial direction of the main body 1, the area between the lower limit measurement surface 31 and the upper limit measurement surface 32 is a qualified interval 33. The relative position of the mobile end 23 and the entire interval is observed and compared to determine the result. If it falls within the qualified interval 33, it is considered qualified. If it is outside the qualified interval 33, such as if the mobile end is above the upper limit measurement surface 32 or below the lower limit measurement surface 31, it is considered unqualified.

[0033] The main body 1 is provided with an axial hole 11 that cooperates with the moving member 2. Specifically, the axial hole 11 cooperates with the rod body 21. The axial hole 11 is provided so that the moving member 2 can move along the direction in which the axial hole 11 is provided, so that when the rod body 21 is in contact with the reference surface, the moving end 23 at the other end moves relative to the main body 1.

[0034] The movable member 2 and the measuring area 3 are arranged in one or more groups. In this technical solution, two groups are provided; wherein the shaft hole 11 and the movable member 2 are arranged in a corresponding group; the movable member 2 and the measuring area 3 are arranged in a corresponding group, and two groups are provided symmetrically, so as to improve the measurement stability and provide multiple observation directions for easy operation.

[0035] The moving member 2 is connected to a restoring assembly that restores the moving member 3 to its original position, and the restoring assembly is connected to the main body 1. The setting of the restoring assembly facilitates the reset of the moving member 2 and facilitates the next detection operation.

[0036] The return assembly includes a spring 6 with one end in contact with the inner surface of the shaft hole 11, and the rod body 21 in contact with the other end of the spring 6. Utilizing the elasticity of the spring 6, with both ends of the spring 6 respectively in contact with the shaft hole 11 and the rod body 21, the spring 6 is compressed during the test process. After the test is completed, the compressed spring 6 returns to its original state, driving the rod body 21 to move to its initial position.

[0037] The rod body 21 is provided with a conflicting block 211 that conflicts with one end of the spring 6;

[0038] In the radial direction of the shaft hole, the width of the interference block 211 is greater than the width of the rod body 21 where the interference block 211 is not provided. The interference block 211 is provided to interfere with the spring 6, so that the rod body 21 can return to its original state when not in interference. The larger width of the interference block 211 prevents the spring 6 from falling out.

[0039] A gasket 12 is positioned on the side of the main member 1 proximal to the abutting end 22. This gasket 12 is provided with a first through-hole 121 through which the abutting end 22 extends. Specifically, the gasket is secured to the main member 1 via a countersunk screw 13. Initially, the side of the abutting block 211, facing away from the spring 6, abuts against the inner surface of the gasket 12, preventing the rod body 21 from slipping out of the axial hole 11. This assembly method is simple and improves production efficiency.

[0040] The cross-sectional width of the main body 1 gradually decreases along the axial direction of the moving member 2 toward the abutting end 22. The upper end face and the lower end face of the main body 1 in the axial direction correspond to the abutting end 22 and the moving end 23 respectively.

[0041] like Figure 6 As shown in the figure, the test status diagram for different cavity states is shown from left to right: the moving end does not exceed the upper limit measurement surface, which is a qualified state; the moving end is within the qualified range; the moving end is not lower than the lower limit measurement surface, which is a qualified state;

[0042] This type of gauge is simple to manufacture. It can simultaneously inspect a part's internal cavity and depth. A single set of gauges can simultaneously detect both the upper and lower limits of a part's internal cavity dimensions. The gauge consists of a main body, a spring, a latch (moving element), a gasket, and screws. During testing, the main body is manually pushed into engagement with the neck cavity. The spring forces the latch against the internal reference surface of the neck cavity. The latch and spring move in concert, allowing the main body to move within the cavity and compress the spring. When the main body and cavity dimensions are equal, the main body and both sides of the cavity align, and the main body stops moving. The distance between the bottom of the latch and the upper and lower measuring surfaces of the main body is then used to determine if the cavity dimensions are acceptable.

[0043] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0044] The above-described embodiments merely represent several implementations of the present invention. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that a person skilled in the art would be able to make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements fall within the scope of protection of the present invention. Therefore, the scope of protection of the present utility model patent shall be determined by the appended claims.

[0045] The above describes in detail an embodiment of an inner cavity size detection tool provided by the present invention. This article uses specific examples to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only intended to help understand the core concept of the present invention. It should be noted that for ordinary technicians in this technical field, without departing from the principles of the present invention, the present invention can also be improved and modified in a number of ways, and these improvements and modifications also fall within the scope of protection of the claims of the present invention.

Claims

1. A tool for detecting inner cavity size, characterized in that: The invention comprises a main body (1), a moving part (2) movably connected to the main body (1) and extending to the outside of the main body (1) for abutment, and the main body (1) is provided with a measuring area (3) for detecting a relative position of the moving position of the end of the moving part (2).

2. The inner cavity size detection tool according to claim 1, characterized in that: The movable member (2) comprises a rod body (21), the rod body (21) being provided with a contact end (22) extending to the outside of the main member (1) and contacting the main member (1), and a movable end (23) being provided at an end of the rod body (21) away from the contact end (22) for detecting the relative position between its movable position and the measuring area (3).

3. The inner cavity size detection tool according to claim 2, characterized in that: The measuring area (3) comprises a lower limit measuring surface (31) and an upper limit measuring surface (32) sequentially arranged along the axial direction of the main body; In the axial direction of the main body (1), the area between the lower limit measuring surface (31) and the upper limit measuring surface (32) is a qualified interval (33).

4. The inner cavity size detection tool according to claim 2 or 3, characterized in that: The main body (1) is provided with an axial hole (11) that matches the moving part (2).

5. The inner cavity size detection tool according to claim 1, characterized in that: The moving parts (2) and the measuring areas (3) are arranged in groups corresponding to one or more groups.

6. The inner cavity size detection tool according to claim 4, characterized in that: The moving part (2) is connected to a return component that returns the moving part (2) to its original position, and the return component is connected to the main part (1).

7. The inner cavity size detection tool according to claim 6, characterized in that: The return assembly comprises a spring (6) with one end in contact with the inner surface of the shaft hole (11), and the rod body (21) in contact with the other end of the spring (6).

8. The inner cavity size detection tool according to claim 7, characterized in that: The rod body (21) is provided with a conflicting block (211) that conflicts with one end of the spring (6); In the radial direction of the shaft hole, the width of the abutment block (211) is greater than the width of the rod body (21) where the abutment block (211) is not provided.

9. The inner cavity size detection tool according to claim 6, characterized in that: A gasket (12) is provided on one side of the main body (1) close to the abutting end (22), and the gasket (12) is provided with a first through hole (121) for the abutting end (22) to pass through to the outside.

10. The inner cavity size detection tool according to claim 9, characterized in that: The cross-sectional width of the main body (1) gradually decreases along the axial direction of the moving part (2) toward the abutting end (22).

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