High-precision detection tool for detecting height of step in hole
By designing a high-precision inspection tool that includes components such as a base plate, an eccentric sleeve support, and a rotating rod probe, the problem that general inspection tools cannot measure the dimensions of steps inside holes is solved, and high-precision detection of the height of steps inside holes is achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANGHAI LESHAN MASCH TECH CO LTD
- Filing Date
- 2025-06-03
- Publication Date
- 2026-05-01
AI Technical Summary
Existing general-purpose gauges cannot accurately measure the dimensions of the steps inside the hole, resulting in insufficient inspection accuracy.
A high-precision inspection tool was designed, comprising a base plate, an eccentric sleeve support, a rotating rod probe, an eccentric sleeve, a spring, a locking nut, a support, and a dial indicator. Through the cooperation of the eccentric sleeve and the rotating rod probe, the height of the step inside the hole can be accurately measured.
It achieves high-precision measurement of the height of the step inside the hole, has a simple structure, is easy to operate, and solves the problem that general inspection tools cannot measure.
Smart Images

Figure CN224189135U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of automotive parts testing, specifically to a high-precision gauge for detecting the height of steps inside a testing hole. Background Technology
[0002] Automotive parts are the various units that make up the overall automotive parts processing and the products that serve automotive parts processing. After automotive parts are manufactured, they need to be inspected. The dimensions within the product also need to be accurate. The dimensions of internal steps in holes cannot be measured using general-purpose inspection tools. This inspection tool is accurate and reliable, solving the problem that a single general-purpose inspection tool cannot measure. It has a simple structure and is easy to operate. Utility Model Content
[0003] To address the problems existing in the prior art, this utility model provides a high-precision gauge for detecting the height of steps inside holes.
[0004] The technical solution adopted by this utility model to solve its technical problem is:
[0005] A high-precision gauge for detecting the height of a step inside a hole includes a base plate 2, an eccentric sleeve support 3, a rotating rod probe 4, an eccentric sleeve 5, a spring 6, a locking nut 7, a support 8, a dial indicator 9, and a dial indicator sleeve 10. The eccentric sleeve support 3 and the support 8 are fixedly mounted on the top left and right sides of the base plate 2. The dial indicator sleeve 10 is fitted onto the top of the support 8, and the dial indicator 9 is installed inside the dial indicator sleeve 10. The eccentric sleeve 5 is fitted onto the top of the eccentric sleeve support 3, and the rotating rod probe 4 is installed inside the eccentric sleeve 5. A spring 6 is fitted onto the outer right end of the rotating rod probe 4, and a locking nut 7 is fitted onto the right end of the rotating rod probe 4.
[0006] This utility model also has the following additional technical features:
[0007] As a further specific optimization of the technical solution of this utility model: the eccentric sleeve support 3 is inverted T-shaped, and the support 8 is L-shaped.
[0008] As a further specific optimization of the technical solution of this utility model: the eccentric sleeve support 3 and support 8 are respectively fixed to the top left and right sides of the base plate 2 by bolts.
[0009] As a further specific optimization of the technical solution of this utility model: Product 1 is installed on the outer left end of the eccentric sleeve 5 and the rotating rod probe 4.
[0010] Compared with the prior art, the advantages of this utility model are:
[0011] This invention solves the problem that a single general-purpose gauge cannot measure certain parameters. It has a simple structure and is easy to operate. Attached Figure Description
[0012] Figure 1 This is a schematic diagram of the exploded structure of this utility model;
[0013] Figure 2 This is a schematic diagram of the installation structure of this utility model;
[0014] Figure 3 This is a cross-sectional structural diagram of the present invention.
[0015] Explanation of reference numerals in the attached drawings: Product 1, base plate; 2, eccentric sleeve support; 3, rotating rod probe; 4, eccentric sleeve; 5, spring; 6, locking nut; 7, support; 8, dial indicator; 9, dial indicator sleeve; 10. Detailed Implementation
[0016] Exemplary embodiments of the present invention will now be described in more detail with reference to the accompanying drawings.
[0017] A high-precision gauge for detecting the height of a step inside a hole includes a base plate 2, an eccentric sleeve support 3, a rotating rod probe 4, an eccentric sleeve 5, a spring 6, a locking nut 7, a support 8, a dial indicator 9, and a dial indicator sleeve 10. By rotating the rod probe 4, the end face of the product 1 is brought into contact with the end face. At this time, the rotating rod probe 4 is lightly pressed and rotated 180 degrees downward, so that the probe surface is in contact with the inner step surface of the workpiece.
[0018] Wherein: the eccentric sleeve support 3 is inverted T-shaped, and the support 8 is L-shaped. The eccentric sleeve support 3 and the support 8 are respectively fixed to the top left and right sides of the base plate 2 by bolts.
[0019] A dial indicator sleeve 10 is fitted onto the top of the support 8, and a dial indicator 9 is installed in the dial indicator sleeve 10; an eccentric sleeve 5 is fitted onto the top of the eccentric sleeve support 3, and a rotating rod probe 4 is installed in the eccentric sleeve 5. A spring 6 is fitted onto the outer side of the right end of the rotating rod probe 4, and a locking nut 7 is fitted onto the right end of the rotating rod probe 4.
[0020] Product 1 is installed on the outer left end of the eccentric sleeve 5 and the rotating rod probe 4.
[0021] The method of using a high-precision gauge for detecting the height of the step inside the hole: First, use the dial indicator zeroing block to calibrate the dial indicator 9 to zero. When measuring, first rotate the probe to the top, then put the product to be measured 1 into the eccentric body, and then put the end face of the product 1 into contact with the end face. At this time, gently press the rotating rod probe 4 and rotate it 180 degrees to the bottom, so that the surface of the rotating rod probe 4 is in contact with the inner step surface of the workpiece. Then observe the reading in the dial indicator 9 as the actual measured value.
[0022] The above detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention.
Claims
1. A high-precision gauge for detecting the height of a step inside a hole, characterized in that: It includes a base plate (2), an eccentric sleeve support (3), a rotating rod probe (4), an eccentric sleeve (5), a spring (6), a locking nut (7), a support (8), a dial indicator (9), and a dial indicator sleeve (10); wherein: the eccentric sleeve support (3) and the support (8) are installed and fixed on the top left and right sides of the base plate (2); the dial indicator sleeve (10) is sleeved on the top of the support (8), and the dial indicator (9) is installed in the dial indicator sleeve (10); the eccentric sleeve (5) is sleeved on the top of the eccentric sleeve support (3), the rotating rod probe (4) is installed in the eccentric sleeve (5), the spring (6) is sleeved on the outer side of the right end of the rotating rod probe (4), and the locking nut (7) is sleeved on the right end of the rotating rod probe (4).
2. The high-precision gauge for detecting the height of the step inside the hole according to claim 1, characterized in that: The eccentric sleeve support (3) is inverted T-shaped, and the support (8) is L-shaped.
3. The high-precision gauge for detecting the height of a step in a hole according to claim 1, characterized in that: The eccentric sleeve support (3) and support (8) are respectively fixed to the top left and right sides of the base plate (2) by bolts.
4. The high-precision gauge for detecting the height of a step in a hole according to claim 1, characterized in that: The product (1) is installed on the outer left end of the eccentric sleeve (5) and the rotating rod probe (4).