A device for measuring the depth of an annular groove in the inner cavity of a spun cylindrical part

Abstract

The utility model discloses a kind of depth measuring devices of spinning cylindrical part inner cavity annular groove, including horizontal guide rail, fixed in the horizontal guide rail both ends small positioning seat and big positioning seat, connect in the horizontal guide rail's base, connect in the base side of measuring arm, connect in the outer end of the measuring arm's fine adjustment rod, dial gauge is vertically fixed in the front end of the fine adjustment rod, angle adjusting disc is connected between the fine adjustment rod and the measuring arm;By adjusting fine adjustment rod makes dial pointer along the diameter direction of the to-be-measured cylindrical part extension, by handle makes dial along cylindrical part axial movement, when the dial pointer inserts annular groove deepest place, the dial is zeroed, then dial passes through entire annular groove, observe the maximum reading of the dial, it is annular groove depth value.The utility model's measuring device realizes the accurate measurement to the depth of spinning cylindrical part inner cavity annular groove.

Description

Technical Field

[0001] This utility model relates to a device for measuring the depth of the annular groove in the inner cavity of a spun cylindrical part, belonging to the field of part size measurement. Background Technology

[0002] A certain spun cylindrical part has an annular groove machined into its inner cavity. This groove is located at the transition point between the starting spin end locating surface and the cylindrical part, formed due to uneven stress on the starting spin section of the cylindrical part. To ensure product quality, it is necessary to measure the depth of this groove, i.e., the radial distance between the deepest point of the groove and the inner wall of the cylindrical surface. Traditional depth measurement usually uses measuring tools such as calipers or plug gauges, which cannot directly measure the depth of the groove under test. Therefore, a device for measuring the depth of this annular groove is needed. Utility Model Content

[0003] The purpose of this invention is to solve the problem that traditional depth measuring tools cannot directly measure the depth of the grooves on the inner wall of spun cylindrical parts. Therefore, this invention provides a device for measuring the depth of the annular grooves in the inner cavity of spun cylindrical parts.

[0004] The objective of this utility model is achieved through the following technical solution:

[0005] This utility model discloses a device for measuring the depth of annular grooves in the inner cavity of a spun cylindrical part, comprising a horizontal guide rail, a small positioning seat and a large positioning seat fixed at both ends of the horizontal guide rail, a base connected to the horizontal guide rail, a measuring arm connected to the side of the base, a fine adjustment rod connected to the outer end of the measuring arm, a dial indicator vertically fixed to the front end of the fine adjustment rod, and an angle adjustment disc connected between the fine adjustment rod and the measuring arm.

[0006] The small positioning seat is a semi-circular plate-shaped piece with a diameter matching the inner diameter of the starting end of the cylindrical part, and the large positioning seat is a semi-circular plate-shaped piece with a diameter matching the inner diameter of the cylindrical part of the cylindrical part. The side wall arc surfaces of the two positioning seat semi-circular plates are coaxial.

[0007] The small positioning seat is supported by an arc surface in the inner cavity of the starting end of the cylindrical part to be tested, and the large positioning seat is supported by an arc surface in the inner cavity of the cylindrical part to be tested, so that the dial indicator moves along the guide rail.

[0008] The angle adjustment dial adjusts the connection angle between the fine adjustment rod and the measuring arm, so that the dial indicator pointer extends along the diameter direction of the cylindrical part to be measured.

[0009] A handle is provided on the side of the base.

[0010] Work process

[0011] When measuring the depth of the annular groove in the inner cavity of a spun cylindrical part, place the small positioning seat in the inner cavity of the starting end of the cylindrical part to be measured, and place the large positioning seat in the inner cavity of the cylindrical part. Adjust the fine adjustment rod to extend the dial indicator pointer along the diameter direction of the cylindrical part to be measured, and move the dial indicator along the axial direction of the cylindrical part using the handle. When the dial indicator pointer is inserted into the deepest part of the annular groove, return the dial indicator to zero. Then move the dial indicator through the entire annular groove and observe the maximum reading of the dial indicator, which is the depth value of the annular groove.

[0012] Beneficial effects

[0013] The measuring device of this invention has high detection efficiency, good detection accuracy, and is easy to operate. It realizes the accurate measurement of the depth of the annular groove in the inner cavity of the spun cylindrical part, thus ensuring product quality. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the measuring device of this utility model;

[0015] Figure 2 for Figure 1 Sectional view along axis AA;

[0016] Figure 3 for Figure 1 Top view;

[0017] Figure 4 This is a diagram showing the usage status of the measuring device of this utility model;

[0018] In the diagram, 1-horizontal guide rail, 2-small positioning seat, 3-large positioning seat, 4-base, 5-measuring arm, 6-fine adjustment rod, 7-dial indicator, 8-angle adjustment dial, 9-handle. Detailed Implementation

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0020] Example

[0021] like Figure 1-3 As shown, the present invention provides a device for measuring the depth of annular groove in the inner cavity of a spun cylindrical part, comprising a horizontal guide rail 1, a small positioning seat 2 and a large positioning seat 3 fixed at both ends of the horizontal guide rail 1, a base 4 connected to the horizontal guide rail 1, a measuring arm 5 connected to the side of the base, a fine adjustment rod 6 connected to the outer end of the measuring arm 5, a dial indicator 7 vertically fixed to the front end of the fine adjustment rod 6, and an angle adjustment disc 8 connected between the fine adjustment rod 6 and the measuring arm 5.

[0022] The small positioning seat 2 is a semi-circular plate-shaped piece with a diameter matching the inner diameter of the starting end of the cylindrical part, and the large positioning seat 3 is a semi-circular plate-shaped piece with a diameter matching the inner diameter of the cylindrical part of the cylindrical part. The side wall arc surfaces of the two positioning seat semi-circular plates are coaxial.

[0023] The small positioning seat 2 is supported by an arc surface in the inner cavity of the starting end of the cylindrical part to be tested, and the large positioning seat 3 is supported by an arc surface in the inner cavity of the cylindrical part to be tested, so that the dial indicator 7 moves along the guide rail.

[0024] The angle adjustment disc 8 adjusts the connection angle between the fine adjustment rod 6 and the measuring arm 5, so that the pointer of the dial indicator 7 extends along the diameter direction of the cylindrical part to be measured.

[0025] A handle 9 is provided on the side of the base 4.

[0026] Figure 4 This is a diagram showing the usage status of the measuring device of this utility model;

[0027] When measuring the depth of the annular groove in the inner cavity of a spun cylindrical part, the small positioning seat 2 is placed in the inner cavity of the starting end of the cylindrical part to be measured, and the large positioning seat 3 is placed in the inner cavity of the cylindrical part to be measured. The pointer of the dial indicator 7 is extended along the diameter direction of the cylindrical part by adjusting the fine adjustment rod 6. The dial indicator 7 is moved along the axial direction of the cylindrical part by the handle 9. When the pointer of the dial indicator is inserted into the deepest part of the annular groove, the dial indicator 7 is zeroed. Then the dial indicator 7 is moved through the entire annular groove, and the maximum reading of the dial indicator 7 is observed, which is the depth value of the annular groove.

Claims

1. A device for measuring the depth of annular grooves in the inner cavity of a spun cylindrical component, characterized in that, It includes a horizontal guide rail, a small positioning seat and a large positioning seat fixed at both ends of the horizontal guide rail, a base connected to the horizontal guide rail, a measuring arm connected to the side of the base, a fine adjustment rod connected to the outer end of the measuring arm, a dial indicator vertically fixed to the front end of the fine adjustment rod, and an angle adjustment disc connected between the fine adjustment rod and the measuring arm. The small positioning seat is a semi-circular plate-shaped piece with a diameter matching the inner diameter of the starting end of the cylindrical part, and the large positioning seat is a semi-circular plate-shaped piece with a diameter matching the inner diameter of the cylindrical part of the cylindrical part. The side wall arc surfaces of the two positioning seat semi-circular plates are coaxial. The small positioning seat is supported by an arc surface in the inner cavity of the starting end of the cylindrical part to be tested, and the large positioning seat is supported by an arc surface in the inner cavity of the cylindrical part to be tested, so that the dial indicator moves along the guide rail. The angle adjustment dial adjusts the connection angle between the fine adjustment rod and the measuring arm, so that the dial indicator pointer extends along the diameter direction of the cylindrical part to be measured.

2. The device for measuring the depth of the annular groove in the inner cavity of a spun cylindrical part as described in claim 1, characterized in that, A handle is provided on the side of the base.

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