CN219284194U

CN219284194U - Tool for measuring chamfer size of cambered surface hole

Info

Publication number: CN219284194U
Application number: CN202223523208.0U
Authority: CN
Inventors: 李图河; 孙国华; 苏磊
Original assignee: China National Heavy Duty Truck Group Jinan Power Co Ltd
Current assignee: China National Heavy Duty Truck Group Jinan Power Co Ltd
Priority date: 2022-12-29
Filing date: 2022-12-29
Publication date: 2023-06-30
Anticipated expiration: 2032-12-29

Abstract

The utility model provides a tool for measuring the chamfer size of an arc surface hole, which aims to overcome the practical difficulty of measuring the chamfer of the arc surface inclined hole in practical production and processing. The tool utilizes the laser projection principle and is matched with an inner hole positioning rod, so that the tool can adapt to measurement of cambered surface holes such as straight holes, inclined holes with angles and the like.

Description

Tool for measuring chamfer size of cambered surface hole

Technical Field

The utility model relates to the technical field of machining, in particular to a tool for measuring the chamfer size of a cambered surface hole.

Background

The side surface of the cylinder and the surface of the sphere are perforated to form an arc surface hole, and a simple and quick measuring tool for measuring the arc surface chamfer angle, in particular for measuring the arc surface chamfer angle (namely, the axis of the hole is not in vertical relation with the perforation position of the arc surface) in the current industry does not exist. The measuring method for evaluating the chamfer position size of the arc hole in the industry generally comprises 2 methods, (1) a visual measuring method, namely measuring by using a vernier caliper, hanging one measuring claw of the caliper on the edge of Ji Daojiao, visually aligning the other measuring claw with the edge of the inner hole, and estimating the size. The measuring method can only measure the arc face straight hole chamfer, the measuring size deviation is larger, and the arc face inclined hole chamfer cannot be measured (the position of the inclined hole edge cannot be judged by visual inspection). (2) The three-dimensional visual scanning imaging method is characterized in that the three-dimensional model is generated by scanning the sizes of arc holes and chamfers according to the three-dimensional laser scanning imaging principle, and the position sizes of the chamfers and the inner holes are calculated through professional analysis software.

Disclosure of Invention

The utility model provides a tool for measuring the chamfer size of an arc surface hole, which is used for overcoming the practical difficulty of measuring the chamfer of the arc surface inclined hole in actual production and processing, and can adapt to the measurement of the arc surface hole such as a straight hole, an inclined hole with an angle and the like by utilizing the laser projection principle and matching with an inner hole positioning rod.

The technical scheme adopted for solving the technical problems is as follows:

the utility model provides a measure instrument of cambered surface hole chamfer size, includes the support, sliding connection has laser emission module on the support, the mid portion rotation of support is connected with the hole locating lever, the surface of support is provided with the scale.

Preferably, the bracket is in a shape like a Chinese character 'ji', a vertical through transverse groove is arranged at the top end of the bracket in the shape of the Chinese character 'ji', and the emitting port of the laser emitting module penetrates through the transverse groove and then is shot on the surface of the part.

Preferably, racks are respectively arranged on the front side and the rear side of the transverse groove above the bracket in the shape of a Chinese character 'ji', each rack is matched with and provided with a gear, and the gears are rotationally connected with the laser emitting module.

The beneficial effects of the utility model are as follows:

according to the utility model, the characteristics of high brightness, good directivity and the like of the laser beam are utilized, the spot finding in a space is realized, the controllable movement of laser is realized by utilizing the gear rack transmission principle, the position size measurement of the cambered surface hole chamfer is realized, the evaluation of hole chamfer is realized rapidly, and the chamfer quality is improved. The device can be used for measuring straight hole chamfer angles and inclined hole chamfer angles on planes and cambered surfaces.

Drawings

FIG. 1 is a first overall block diagram of the present utility model;

FIG. 2 is a second overall block diagram of the present utility model;

FIG. 3 is a block diagram of the installation of the female locating lever;

fig. 4 is a rack and pinion connection structure diagram.

Detailed Description

In order to make the technical solution of the present utility model better understood by those skilled in the art, the technical solution of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are only some embodiments of the present utility model, not all embodiments.

In the description of the present utility model, the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "vertical", "horizontal", etc. refer to the orientation or positional relationship based on that shown in the drawings, and are merely for the purpose of describing the present utility model and do not require that the present utility model must be constructed or operated in a specific orientation, and thus should not be construed as limiting the present utility model. "connected" and "connected" in the present utility model are to be understood broadly, and may be, for example, connected or detachably connected; the connection may be direct or indirect through intermediate members, and the specific meaning of the terms may be understood in detail by those skilled in the art.

As shown in fig. 1-4, the utility model discloses a tool for measuring the chamfer size of a cambered surface hole, which comprises a bracket 4 in a shape like a Chinese character 'ji', wherein a graduated scale is arranged on the outer side surface of the bracket, a vertical through transverse groove is arranged at the upper end of the bracket, and an inner hole locating rod 5 is hinged at the middle part of the transverse groove in the left-right direction and is used for penetrating into a measuring hole to fix the whole tool together with the bracket. Two racks 6 are symmetrically arranged on the front side and the rear side of the transverse groove, and each rack faces the outside of the bracket. The cover plate 3 is buckled and installed outside each rack, the laser emission module 1 is installed on the upper surface of the cover plate, the area outside the laser emission module rotates and installs the gear with the cover plate below, the wheel shaft of the gear penetrates through the cover plate upwards and then is connected with the knob 2, the knob is screwed, the gear can be driven to rotate, the rotary circular motion is changed into the linear motion in the horizontal direction under the meshing transmission effect of the racks, the laser emission modules are driven to move left and right, laser beams emitted by the two laser emission modules penetrate through the transverse grooves to strike the edge of the chamfer, and the chamfer size can be read through the graduated scale outside the support.

The utility model solves the problems of complicated and complex evaluation method for evaluating the uniformity of the chamfer profile of the inclined hole and non-ideal use effect in the prior art.

The utility model can be widely applied to chamfering evaluation of straight holes and inclined holes of cambered surfaces (such as outer cylindrical surfaces, inner cylindrical surfaces and the like) of inner shaft parts in various engine fields, and can effectively improve the processing quality and the processing efficiency.

The foregoing has been described in what is considered to be the preferred embodiments of the utility model, and the description of specific examples is only intended to provide a better understanding of the principles of the utility model. It will be apparent to those skilled in the art that modifications and equivalents may be made in accordance with the principles of the utility model, and such modifications and equivalents are considered to fall within the scope of the utility model.

Claims

1. The tool for measuring the chamfer size of the cambered surface hole is characterized by comprising a bracket, wherein the bracket is connected with a laser emission module in a sliding manner, the middle part of the bracket is rotationally connected with an inner hole positioning rod, and the outer surface of the bracket is provided with a graduated scale;

the bracket is in a shape like a Chinese character 'ji', a vertical through transverse groove is formed in the top end of the bracket in the shape of the Chinese character 'ji', the emitting port of the laser emitting module penetrates through the transverse groove and then is shot on the surface of a part, and position dimension measurement of the chamfer of the cambered surface hole is realized by finding points through spaced light spots.

2. The tool for measuring the chamfer size of the cambered surface hole according to claim 1, wherein racks are respectively arranged on the front side and the rear side of the transverse groove above the bracket in a shape like a Chinese character 'ji', each rack is provided with a gear in a matching way, and the gears are rotationally connected with the laser emitting module.