Three-groove shell three-petal non-circular groove diameter gauge

Abstract

The utility model discloses a three groove shell three labiums non whole circle formula groove diameter testing fixture, it includes base, fixed block, sliding block and micrometer, the fixed block is located in the base, the sliding block is in the base on the activity slip, the micrometer is located in one side of the base, the detection end of micrometer and the lateral wall of sliding block are opposite each other, the lateral wall of fixed block is equipped with two first abutting piece, the lateral wall of sliding block is equipped with second abutting piece, and the fixed block with sliding block combination becomes detection station. The present application has the effect of improving the convenience of detecting three groove shell.

Description

Technical Field

[0001] This application relates to the field of inspection tool technology, and in particular to a three-groove shell, three-lobed, non-circular groove diameter inspection tool. Background Technology

[0002] Reference Figure 1 The three-slot shell 21 consists of three shells with a U-shaped cross-section. The three shells are connected end to end and arranged in a ring. According to the structural requirements of the three-slot shell 21, three mating grooves 22 are evenly opened on the inner circumferential sidewall of the three-slot shell 21. The mating grooves 22 are located on the inner sidewall between two adjacent shells and are arc-shaped. After the processing equipment completes the processing of the mating grooves corresponding to the three-slot shell, in order to determine the pass rate of the three-slot shell, the inspector uses a dial indicator to measure the groove diameter. Then, the dial indicator needs to be rotated to measure the mating groove in another direction to determine whether the three-slot shell is qualified. However, in the process of inspecting the mating grooves of the three-slot shell, the dial indicator needs to be adjusted and measured multiple times, which makes the work efficiency of inspecting the three-slot shell low. Utility Model Content

[0003] The purpose of this utility model is to address the defects and shortcomings of the existing technology by providing a three-groove shell, three-lobed, non-circular groove diameter gauge.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: The device includes a base, a fixed block, a slider, and a dial indicator. The fixed block is located on the base, the slider slides movably on the base, and the dial indicator is located on one side of the base. The measuring end of the dial indicator abuts against the side wall of the slider. The side wall of the fixed block is provided with two first abutting pieces, and the side wall of the slider is provided with a second abutting piece. The fixed block and the slider are combined to form a testing station.

[0005] Preferably, the side wall of the base is provided with a groove along the detection direction of the dial indicator, and the slider is inserted and slidably moved in the groove.

[0006] Preferably, a compression spring is provided between the slider and the stationary block, and the compression spring drives the slider to move toward the dial indicator.

[0007] Preferably, the base is provided with a working platform, and the working platform has a connecting groove, through which the fixed block and the slider respectively pass.

[0008] Preferably, one end of the base is provided with a dial indicator holder, and the dial indicator is fixed on the dial indicator holder.

[0009] Preferably, the sidewall of the slider is provided with a drive handle.

[0010] Preferably, the side wall of the base is provided with a fixing handle.

[0011] In summary, the beneficial technical effects of this application are as follows: When inspecting the mating grooves of a three-groove shell, hold the drive handle to move the slider closer to the stationary block, then place the three-groove shell on the work platform. Release the drive handle, and the slider, driven by the compression spring, will insert its second abutment piece into the mating groove of the three-groove shell. Subsequently, the two first abutment pieces of the stationary block will be inserted into the other two mating grooves of the three-groove shell respectively. As the slider slides, it will push the dial indicator, allowing the measurement result to be read from the dial indicator. Repeat the above actions to measure the groove diameter of the other two mating grooves. Compared with existing measurement methods, this tool can detect the measurement results of the mating grooves of the three-groove shell more quickly, improving the convenience of inspecting the three-groove shell. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the three-groove shell structure in the background art; Figure 2 This is a schematic diagram of the fixture structure in the embodiment; Figure 3 This is a cross-sectional schematic diagram of the inspection tool in the embodiment; Figure 4 This is an exploded view of the inspection tool in the embodiment.

[0013] In the diagram: 1. Base; 2. Fixed block; 3. Slider; 4. Working platform; 5. Dial indicator; 6. Slide groove; 7. Connecting groove; 8. First connecting groove; 9. Second connecting groove; 10. First abutment piece; 11. Second abutment piece; 12. Inspection station; 13. Compression spring; 14. First groove; 15. Second groove; 16. Indicator holder; 17. Mounting groove; 18. Limiting groove; 19. Drive handle; 20. Fixing handle; 21. Three-groove shell; 22. Mating groove. Detailed Implementation

[0014] The present invention will be further described below with reference to the accompanying drawings.

[0015] This application discloses a three-groove shell, three-lobed, non-circular groove diameter gauge.

[0016] Reference Figure 2 and Figure 3The system includes a base 1, a fixed block 2, a slider 3, a working platform 4, and a dial indicator 5. The upper side wall of the base 1 has a groove 6 along its length, with both ends of the groove 6 being through. The fixed block 2 is fixed to the base 1 by bolts and is located above the groove 6. The slider 3 is inserted and slides within the groove 6. The longitudinal section of the slider 3 is "L"-shaped. The dial indicator 5 is located on one side of the base 1. The measuring end of the dial indicator 5 extends into the groove 6 and abuts against the side wall of the slider 3. The side wall of the working platform 4 has a connecting groove 7, which includes a first connecting groove 8 and a second connecting groove 9. The first connecting groove 8 and the second connecting groove 9 are connected and the connecting groove 7 is "T"-shaped. The fixed block 2 passes through the second connecting groove 9 and is fixed to the base 1. The slider 3 slides within the first connecting groove 8.

[0017] The upper sidewall of the slider 3 is integrally provided with a second abutment piece 11, and the sidewalls at both ends of the fixed block 2 are integrally provided with a first abutment piece 10. The first abutment piece 10 and the second abutment piece 11 are opposite to each other and are semi-circular. The two first abutment pieces 10 and the second abutment pieces 11 can be inserted into the three mating grooves 22 of the three-groove shell 21 respectively. The fixed block 2 and the slider 3 are combined to form a detection station 12, and the three-groove shell 21 can be installed on the detection station 12.

[0018] A compression spring 13 is placed between the slider 3 and the fixed block 2. The side wall of the slider 3 has a first groove 14 and the side wall of the fixed block 2 has a second groove 15. One end of the compression spring 13 is inserted into the first groove 14 and the other end of the compression spring 13 is inserted into the second groove 15. Under the action of the compression spring 13, the slider 3 can slide in the groove 6 and move away from the fixed block 2.

[0019] The base 1 has a clamp 16 fixed at one end near the dial indicator 5. The side wall of the clamp 16 has a mounting groove 17. The dial indicator 5 is inserted and installed in the mounting groove 17. The clamp 16 is threaded with a screw. The screw can tighten the mounting groove 17, thereby locking the dial indicator 5 onto the clamp 16. The measuring end of the dial indicator 5 extends into the slide groove 6.

[0020] Reference Figure 4The base 1 has a limiting groove 18 along the length of the side wall of the slide 6, which connects the side wall of the slide 6 to the side wall of the base 1. A drive handle 19 is fixedly installed on the side wall of the slider 3, which can move within the slide 6. A fixing handle 20 is fixed on the side wall of the base 1. Holding the drive handle 19 moves the slider 3 closer to the fixed block 2. Then, the three-slot shell 21 is placed on the work platform 4. After releasing the drive handle 19, the slider 3, driven by the compression spring 13, inserts its second abutment piece 11 into the mating groove 22 of the three-slot shell 21. Subsequently, the two first abutment pieces 10 of the fixed block 2 are inserted into the other two mating grooves 22 of the three-slot shell 21. As the slider 3 slides, it pushes the dial indicator 5, allowing the measurement result to be read from the dial indicator 5.

[0021] Detection principle: Two first abutment pieces 10 and second abutment pieces 11 are used to form a three-point contact with the non-circular object to be measured. Since the non-circular objects have different shapes, and the first abutment pieces 10 and second abutment pieces 11 must be in contact with the non-circular object to be measured, the variation δ of the dial indicator 5 may not be a 1:1 relationship with the difference between the actual value and the standard value of the reference part. Let there be a variation coefficient K at this time, then the actual value of the non-circular object to be measured is equal to: standard value ± K*δ.

[0022] The above description is only a preferred embodiment of the present utility model. Therefore, all equivalent changes or modifications made to the structure, features and principles described in the claims of the present utility model patent application are included in the scope of the present utility model patent application.

Claims

1. A three-groove shell, three-lobed, non-circular groove diameter gauge, characterized in that: The device includes a base (1), a fixed block (2), a slider (3), and a dial indicator (5). The fixed block (2) is located on the base (1), the slider (3) slides movably on the base (1), and the dial indicator (5) is located on one side of the base (1). The detection end of the dial indicator (5) abuts against the side wall of the slider (3). The side wall of the fixed block (2) is provided with two first abutting pieces (10), and the side wall of the slider (3) is provided with a second abutting piece (11). The fixed block (2) and the slider (3) are combined to form a detection station (12).

2. A three-shell three-piece non-circular slot gauge according to claim 1, characterized in that, The side wall of the base (1) is provided with a groove (6) along the detection direction of the dial indicator (5), and the slider (3) is inserted and slids in the groove (6).

3. A three-shell three-piece non-circular slot gauge according to claim 1, wherein, A compression spring (13) is provided between the slider (3) and the fixed block (2), and the compression spring (13) drives the slider (3) to move toward the dial indicator (5).

4. A three-shell three-piece non-circular slot gauge according to claim 1, wherein, The base (1) is provided with a working platform (4), and the working platform (4) has a connecting groove (7). The fixed block (2) and the slider (3) pass through the connecting groove (7) respectively.

5. A three-shell three-piece non-circular slot gauge according to claim 1, wherein, One end of the base (1) is provided with a gauge holder (16), and the dial indicator (5) is fixed on the gauge holder (16).

6. A three-shell three-piece non-circular slot gauge according to claim 1, wherein, The slider (3) has a drive handle (19) on its side wall.

7. A three-shell three-piece non-circular slot gauge according to claim 1, wherein The base (1) has a fixing handle (20) on its side wall.

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