Wall thickness detection device for circular arc type parts

Abstract

The utility model belongs to the field of precision instrument measurement relates to a kind of wall thickness detection device for arc class parts including flat base, arc positioning seat and surface frame are fixedly connected on flat base, surface frame is connected with dial gauge, and measuring assembly is equipped in positioning seat;The utility model can be flexibly adjusted, satisfy the measurement of the wall thickness of different positions of arc class bellmouth fairing parts, by the positioning datum of the shape of part covering and elastic probe, the wall thickness of any position can be quickly measured by moving part on positioning seat.

Description

Technical Field

[0001] This utility model belongs to the field of precision instrument measurement and relates to a wall thickness detection device for arc-shaped parts. Background Technology

[0002] For measuring the wall thickness of arc-shaped drug liner parts, two measuring points are required on the inner and outer surfaces. Both measuring points are perpendicular to the normal plane of the contact point. However, coordinate measuring machines (CMMs) have limitations such as difficulty in fixing the parts, low efficiency in matching the inner and outer contact points one by one, inability to perform continuous measurements, and inability to accurately measure the wall thickness difference of arbitrary cross sections. Utility Model Content

[0003] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide a wall thickness detection device for arc-shaped parts.

[0004] The wall thickness detection device for arc-shaped parts described in this utility model includes a flat plate base, an arc-shaped positioning seat and a dial indicator fixedly connected to the flat plate base, a dial indicator connected to the dial indicator, and a measuring component inside the positioning seat. The measuring component includes a probe that is slidably connected within a positioning base, and a spring is provided at the bottom of the probe.

[0005] The inner arc surface of the positioning seat is threaded with a plug corresponding to the spring.

[0006] The positioning base is equipped with at least two sets of measuring components.

[0007] The positioning seat is fixedly connected to the flat plate base by fixing bolts.

[0008] The flat base is provided with an adjustment groove, and an adjustment bolt adapted to the positioning seat is slidably connected in the adjustment groove.

[0009] The probe is a scanning probe, which is existing technology. By connecting a transmission cable, the scanned data can be displayed on an external display or system for recording.

[0010] The positioning seat is equipped with a limiting guide strip.

[0011] Compared with the prior art, the beneficial effects of this utility model are: This invention is flexibly adjustable to meet the requirements for measuring the wall thickness at different positions of arc-shaped medicine cover parts. By using the positioning reference of the part's shape and the elastic probe, the wall thickness at any position can be quickly measured by moving the part on the positioning seat. Attached Figure Description

[0012] Figure 1 This is a structural schematic diagram of an embodiment of the present invention. Figure 2 This is a utility model Figure 1 Enlarged view of point A in the image.

[0013] In the diagram: 1. Flat base; 2. Gauge holder; 3. Dial indicator; 4. Probe; 5. Spring; 6. Plug; 7. Positioning seat; 8. Adjusting bolt; 9. Adjusting groove; 10. Fixing bolt; 11. Workpiece; 12. Limiting guide strip. Detailed Implementation

[0014] Example 1 like Figures 1-2 As shown, the wall thickness detection device for arc-shaped parts of this utility model includes a flat plate base 1, an arc-shaped positioning seat 7 and a dial indicator 2 fixedly connected to the flat plate base 1, a dial indicator 3 connected to the dial indicator 2, a measuring component inside the positioning seat 7, and threaded holes on the upper surface of the flat plate base 1 for installing the positioning seat 7 and the dial indicator 2, which are connected by bolts. The surface requires high flatness to ensure the accuracy of positioning and measurement. The dial indicator 2 is a standard structure and is installed on the flat plate by bolts. The front end is connected to the dial indicator 3. The measuring position of the dial indicator 3 is flexibly adjustable. The dial indicator 3 can be replaced by a displacement sensor to obtain higher measurement accuracy. The measuring component includes a probe 4 slidably connected within a positioning base 7. A spring 5 is provided at the bottom of the probe 4. The probe 4 is mounted on the positioning base 7, and its cylindrical surface is in clearance fit with the inner hole of the positioning base 7. The mating surface has high flatness to ensure free sliding without wobbling. The bottom surface of the probe 4 is held in place by the spring 5 and can extend and retract freely. The probe 4 is a scanning probe 4, which is existing technology. By connecting a transmission cable, the scanned data can be displayed on an external display or system for recording.

[0015] The positioning seat 7 has a threaded plug 6 on its inner arc surface, which corresponds to the spring 5. The spring force of the spring 5 can be adjusted by screwing the plug 6 in by different sizes of arc-shaped workpieces 11, thereby adjusting the clamping force between the probe 4 and the workpiece 11. During installation, by adjusting the plug 6, the spring 5 is kept within a reasonable elastic range, so that the workpiece 11 is not scratched when the part moves, and the probe 4 is in full contact with the part.

[0016] The positioning seat 7 is provided with at least two sets of measuring components; the positioning seat 7 is fixedly connected to the flat base 1 by fixing bolts 10; the flat base 1 is provided with an adjustment groove 9, and an adjustment bolt 8 adapted to the positioning seat 7 is slidably connected in the adjustment groove 9. When measuring arc workpieces 11 of different specifications, the inner diameter of the workpiece 11 and the outer diameter of the positioning seat 7 may not be compatible to a certain extent. Therefore, a positioning seat 7 adapted to the workpiece 11 to be measured can be replaced. One end of the positioning seat 7 is fixedly positioned on the flat base 1 by fixing bolts 10, and the other end of the positioning seat 7 corresponds to the position of the adjustment groove 9. The adjustment bolt 8 can be moved in the adjustment groove 9 to make it threadedly connected to the positioning seat 7, thereby realizing the fixed connection between the positioning seat 7 and the flat base 1.

[0017] Working process or working principle: When in use, by adjusting the plug 6 when assembling the appropriate positioning seat 7, the spring 5 is kept within a reasonable elastic range to ensure that the workpiece 11 is not scratched when the part moves, and to ensure that the probe 4 is in full contact with the part. The device is equipped with a calibration gauge for calibration before measuring the part, so that the dial indicator 3 and the probe 4 are on the same straight line. The calibration gauge is pressed between the probes 4 and the dial indicator 3 is zeroed. In the working state, the probe 4 directly contacts the workpiece 11 for measurement. The wall thickness of the part can be measured at any position by moving the part on the positioning seat 7. A limiting guide strip 12 is added to the positioning seat 7, and the wall thickness difference of any section can be measured along the limited trajectory of the limiting guide strip 12.

[0018] This utility model is flexibly adjustable to meet the requirements of measuring the wall thickness at different positions of arc-shaped medicine cover parts. By using the positioning reference of the part's shape and the elastic probe 4, the wall thickness at any position can be quickly measured by moving the part on the positioning seat 7.

[0019] The descriptions of the orientation and relative positional relationships of the structure in this utility model, such as descriptions of front, back, left, right, up, and down, do not constitute a limitation on this utility model, but are merely for the convenience of description.

Claims

1. A wall thickness detection device for arc-shaped parts, characterized in that: It includes a flat base (1), an arc-shaped positioning seat (7) and a dial indicator (2) are fixedly connected on the flat base (1), a dial indicator (3) is connected on the dial indicator (2), and a measuring component is provided inside the positioning seat (7); The measuring component includes a probe (4) that is slidably connected in the positioning seat (7), and a spring (5) is provided at the bottom of the probe (4).

2. The wall thickness detection device for arc-shaped parts according to claim 1, characterized in that: The positioning seat (7) has a threaded plug (6) on its inner arc surface that corresponds to the spring (5).

3. The wall thickness detection device for arc-shaped parts according to claim 2, characterized in that: The positioning seat (7) is equipped with at least two sets of measuring components.

4. The wall thickness detection device for arc-shaped parts according to claim 3, characterized in that: The positioning seat (7) is fixedly connected to the flat plate base (1) by fixing bolts (10).

5. The wall thickness detection device for arc-shaped parts according to claim 4, characterized in that: The flat base (1) is provided with an adjustment groove (9), and an adjustment bolt (8) adapted to the positioning seat (7) is slidably connected in the adjustment groove (9).

6. The wall thickness detection device for arc-shaped parts according to claim 5, characterized in that: The positioning seat (7) is provided with a limiting guide strip (12).

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