阅读说明：本技术 一种测量结构特殊零件内部中心孔的测孔工装及方法 (Hole measuring tool and method for measuring internal center hole of special part with structure ) 是由 杨凤 车利民 杨庆仁 鲁航 林彬彬 陈国宏 张武成 何志国 于 2020-06-22 设计创作，主要内容包括：一种测量结构特殊零件内部中心孔的测孔工装及方法,它涉及一种测量中心孔的测孔工装及方法,具体涉及一种测量结构特殊零件内部中心孔的测孔工装及方法。本发明为了解决。本发明的步骤为步骤一、将测孔工装的圆锥部插入待测零件的孔中拧紧；步骤二、利用红外探头或者数控设备测量测孔工装的上测量体的圆心位置,此位置即为孔中心位置。本发明属于汽轮机设备领域。(A hole measuring tool and a method for measuring an internal center hole of a special structural part relate to a hole measuring tool and a method for measuring a center hole, in particular to a hole measuring tool and a method for measuring an internal center hole of a special structural part. The invention aims to solve the problem. The method comprises the steps of firstly, inserting a conical part of a hole measuring tool into a hole of a part to be measured and screwing; and step two, measuring the circle center position of an upper measuring body of the hole measuring tool by using an infrared probe or numerical control equipment, wherein the circle center position is the hole center position. The invention belongs to the field of steam turbine equipment.)

1. The utility model provides a survey hole frock of inside centre bore of special part of measurement structure which characterized in that: the hole measuring tool for measuring the inner center hole of the special part of the structure comprises an upper measuring body (1) and a conical part (2), wherein the lower end of the upper measuring body (1) is fixedly connected with the upper end of the conical part (2).

2. The hole measuring tool for measuring the internal center hole of the special part with the structure as claimed in claim 1, characterized in that: the upper measuring body (1) is a solid cylinder.

3. The hole measuring tool for measuring the internal center hole of the special part with the structure as claimed in claim 1, characterized in that: the conical part (2) is a frustum body with the outer contour gradually reduced from top to bottom.

4. A method for measuring the internal center hole of a structural special part is characterized in that: the method for measuring the internal center hole of the structural special part is realized by the following steps:

step one, inserting a conical part (2) of a hole measuring tool into a hole of a part to be measured and screwing;

and step two, measuring the circle center position of the upper measuring body (1) of the hole measuring tool by using an infrared probe or numerical control equipment, wherein the position is the hole center position.

5. A method for measuring the internal center hole of a structural special part according to claim 4, wherein: in the first step, the hole of the part to be measured needs to be in interference fit with the conical part (2) of the hole measuring tool.

Technical Field

The invention relates to a hole measuring tool and a hole measuring method for measuring a center hole, in particular to a hole measuring tool and a hole measuring method for measuring an inner center hole of a special part with a structure, and belongs to the field of steam turbine equipment.

Background

When the center position of the inner hole of the special structural part is determined, the problem that the edge finder cannot contact the edge of the hole due to insufficient length of the infrared probe is often encountered, so that the center position of the hole cannot be determined, and the subsequent machining precision of the relevant part taking the hole center as a reference is directly influenced.

Disclosure of Invention

The invention provides a hole measuring tool and a hole measuring method for measuring an internal center hole of a special structural part, aiming at solving the problem that when the center position of the internal center hole of the special structural part is determined, the infrared probe is often short in length and an edge finder cannot contact the edge of the hole.

The technical scheme adopted by the invention for solving the problems is as follows: the hole measuring tool comprises an upper measuring body and a conical part, wherein the lower end of the upper measuring body is fixedly connected with the upper end of the conical part.

Further, the upper measuring body is a solid cylinder.

Furthermore, the conical part is a frustum body with an outer contour gradually reduced from top to bottom.

The method comprises the following specific steps:

inserting a conical part of a hole measuring tool into a hole of a part to be measured and screwing;

and step two, measuring the circle center position of an upper measuring body of the hole measuring tool by using an infrared probe or numerical control equipment, wherein the circle center position is the hole center position.

Furthermore, in the first step, the hole of the part to be measured and the conical part of the hole measuring tool need to be ensured to be in interference fit.

The invention has the beneficial effects that: the method is simple to operate and high in accuracy. The method is very effective for products of the hole centers which cannot be measured by the infrared probe and the edge finder, and fills up another gap in the hole measuring method; the invention is suitable for any product, can be operated by inexperienced operators, and has strong universality and high practicability.

Drawings

Fig. 1 is a schematic structural diagram of a hole measuring tool.

Detailed Description