Special-shaped needle frame for three-coordinate measuring instrument for measuring marine engine cylinder body
By designing a special-shaped needle holder that adapts to the inclination angle of the oil hole surface, the problem of manually adjusting the angle when measuring the oil hole of the marine engine cylinder block in the prior art is solved, and efficient and accurate measurement is achieved.
Patent Information
- Application Number
- CN202421446719.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-24
- Publication Date
- 2025-04-22
- Estimated Expiration
- 2034-06-24
AI Technical Summary
When measuring the oil holes of marine engine cylinder blocks, the existing three-coordinate measuring instruments need to manually adjust the angle between the stylus and the oil hole surface, resulting in inaccurate, cumbersome and inefficient measurements.
A special-shaped needle holder is designed, including a linear needle holder, a suction cup, a horizontal needle holder and a stylus connected symmetrically at both ends of the needle holder. The end faces of the needle holder are symmetrical inclined surfaces, with a 60° angle between the end face and the extension line at the bottom of the needle holder, and a 60° angle between the stylus and the extension line at the top of the needle holder, adapting to the inclination angle of the oil hole surface and reducing manual adjustment.
With this design, no manual angle adjustment is required when measuring the cylinder oil hole, which improves the accuracy and efficiency of measurement and simplifies the operation process.
Smart Images
Figure CN222784081U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of measuring oil holes of a marine engine cylinder body, in particular to a special-shaped needle holder for a three-coordinate measuring instrument for measuring the marine engine cylinder body. Background Art
[0002] The three-axis coordinate measuring machine can be defined as: a detector that can move in three directions and can move on three mutually perpendicular guide rails. The detector transmits signals in a contact or non-contact manner. The three-axis displacement measurement system (such as a grating ruler) calculates the various points (x, y, z) of the workpiece and various functional measurements through a data processor or computer.
[0003] (refer to Figure 1 ) A number of oil holes 41 are provided on the cylinder block 40 of a marine engine. Generally, these oil holes 41 are arranged at an angle, and the oil hole surface of the oil hole 41 is inclined at an angle of 60°. In addition, oil holes 41 are provided on both sides of the cylinder block 40. If the existing three-dimensional coordinate measuring instrument with a universal joint 11 is used to measure the size of the oil hole 41, it is necessary to first adjust the angle between the measuring needle 30 and the oil hole surface of the oil hole 41 so that the two are perpendicular. The adjustment method is: use a wrench to loosen the screw at the connection position of the universal joint 11 and the connecting rod, manually adjust the position of the measuring needle 30 so that it is perpendicular to the oil hole surface, and then use a detection tool (such as a universal angle ruler) to measure and confirm whether the angle is correct; after the calibration is completed, measure again. Therefore, manual calibration will have errors, affecting the accuracy of the measurement, and the calibration process is relatively cumbersome, affecting the efficiency of the measurement. Utility Model Content
[0004] The utility model aims to provide a special-shaped needle holder for a three-coordinate measuring instrument for measuring a cylinder body of a marine engine.
[0005] The innovation of the utility model lies in that the utility model has a simple structure, high measurement accuracy and high measurement efficiency.
[0006] In order to achieve the above utility model purpose, the technical solution of the utility model is:
[0007] A special-shaped needle holder for a three-coordinate measuring instrument for measuring a ship engine cylinder body comprises a suction cup; a horizontally arranged needle holder and measuring needles symmetrically connected to both ends of the needle holder; the needle holder is linear, and the center top of the needle holder is connected to the suction cup; the end faces at both ends of the needle holder are symmetrical inclined planes, which are inclined from the top of the needle holder to the center bottom of the needle holder; an angle of 60° is formed between the end faces and the extension line of the bottom of the needle holder; threaded holes perpendicular to the two end faces are processed in the centers; one end of the measuring needle is a probe, and the other end is connected to the threaded hole through a screw, and after connection, an angle of 60° is formed between the measuring needle and the extension line of the top of the needle holder.
[0008] Furthermore, a notch is processed at the center top of the needle holder, a connecting hole is processed at the center of the notch, a stud is arranged in the connecting hole, and the other end of the stud is connected to the bottom of the suction cup.
[0009] Furthermore, the needle holder is symmetrically provided with a plurality of perforations on both sides with the notch as the center.
[0010] The beneficial effects of the utility model are:
[0011] First: the measuring needles are symmetrically arranged on both sides of the linear needle holder, and the end face forms an angle of 60° with the extension line of the bottom of the needle holder. The measuring needle is perpendicular to the end face of the needle holder. When measuring the oil hole of the cylinder body, since the inclination angle of the oil hole surface of the oil hole is also 60°, the measuring needle is perpendicular to the oil hole surface, and there is no need to manually adjust the angle between the two, which saves time and effort, and has high measurement accuracy and efficiency.
[0012] Second: The needle holder is provided with perforations to reduce its own weight. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 It is a schematic diagram of the prior art structure.
[0014] Figure 2 It is a schematic diagram of the structure of the utility model.
[0015] Figure 3 This is the front view of the needle holder.
[0016] Figure 4 This is a top view of the needle holder.
[0017] In the figure: 10 is a suction cup, 11 is a universal joint, 20 is a needle holder, 21 is a threaded hole, 22 is a notch, 23 is a connecting hole, 24 is a stud, 25 is a through hole, 30 is a measuring needle, 40 is a cylinder body, and 41 is an oil hole. DETAILED DESCRIPTION
[0018] The technical solutions in the embodiments of the present utility model will be described clearly and completely below in conjunction with the accompanying drawings.
[0019] A special-shaped needle holder for a three-coordinate measuring instrument for measuring a ship engine cylinder block comprises a suction cup 10; further comprising a horizontally arranged needle holder 20 and a measuring needle 30 symmetrically connected to both ends of the needle holder 20; the needle holder 20 is a straight line, and the center top of the needle holder 20 is connected to the suction cup 10; the end faces at both ends of the needle holder 20 are symmetrical inclined planes, which are inclined from the top of the needle holder 20 to the center bottom of the needle holder 20; an angle of 60° is formed between the end faces and the extension line of the bottom of the needle holder 20; threaded holes 21 perpendicular to the two end faces are processed in the centers; one end of the measuring needle 30 is a probe, and the other end is connected to the threaded hole 21 through a screw, and after connection, an angle of 60° is formed between the measuring needle 30 and the extension line of the top of the needle holder 20.
[0020] Furthermore, a notch 22 is processed at the center top of the needle holder 20 , a connecting hole 23 is processed at the center of the notch 22 , a stud 24 is arranged in the connecting hole 23 , and the other end of the stud 24 is connected to the bottom of the suction cup 10 .
[0021] Furthermore, the needle holder 20 is provided with a plurality of through holes 25 symmetrically arranged on both sides with the notch 22 as the center.
[0022] The described embodiments are only some embodiments of the utility model, not all embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
Claims
1. A special-shaped needle holder for a three-dimensional coordinate measuring instrument for measuring a ship engine cylinder body, comprising a suction cup (10); characterized in that: It also includes a needle rack (20) arranged horizontally and a measuring needle (30) symmetrically connected to both ends of the needle rack (20); the needle rack (20) is linear, and the top of the center of the needle rack (20) is connected to the suction cup (10); the end faces of both ends of the needle rack (20) are symmetrical inclined planes, which are inclined from the top of the needle rack (20) to the bottom of the center of the needle rack (20); the end faces form an angle of 60° with the extension line of the bottom of the needle rack (20); the centers of the two end faces are processed with threaded holes (21) perpendicular to them; one end of the measuring needle (30) is a measuring head, and the other end is connected to the threaded hole (21) through a screw rod, and after the connection, the measuring needle (30) forms an angle of 60° with the extension line of the top of the needle rack (20).
2. The special-shaped needle holder for a three-dimensional coordinate measuring instrument for measuring a ship engine cylinder according to claim 1, characterized in that: A notch (22) is machined at the top center of the needle holder (20), a connecting hole (23) is machined at the center of the notch (22), a stud (24) is arranged in the connecting hole (23), and the other end of the stud (24) is connected to the bottom of the suction cup (10).
3. The special-shaped needle holder for a three-dimensional coordinate measuring instrument for measuring a ship engine cylinder according to claim 2, characterized in that: The needle holder (20) is provided with a plurality of perforations (25) symmetrically arranged on both sides with the notch (22) as the center.