CN216385413U

CN216385413U - Back taper cylinder contrast detection measuring tool

Info

Publication number: CN216385413U
Application number: CN202122991564.4U
Authority: CN
Inventors: 彭路贵; 张豪
Original assignee: Chengdu Fengyi Yinhu Cnc Tool Co ltd
Current assignee: Chengdu Fengyi Yinhu Cnc Tool Co ltd
Priority date: 2021-12-01
Filing date: 2021-12-01
Publication date: 2022-04-26
Anticipated expiration: 2031-12-01

Abstract

The utility model discloses a reverse taper cylinder contrast detection measuring tool, which comprises a first detection piece, a second detection piece and a lever micrometer, wherein a detection cylinder of the first detection piece is arranged at the first end of a first detection base body, and a second end of the first detection base body is provided with a first stud; the detection ball of the second detection piece is arranged at the first end of the second detection base body, and the second end of the second detection base body is provided with a second stud; the first stud and the second stud are respectively connected with a movable measuring anvil and a micrometer screw of the lever micrometer. The utility model can quickly detect whether the corresponding external diameter size of the inverted cone section of the inverted cone cylinder to be detected is the same as the standard size, and accordingly, the accurate grinding processing of the inverted cone cylinder is realized, the detection precision is improved and the operation is convenient; the measuring tool can complete online detection without taking down the inverted cone cylinder from the machine tool, avoid the problem of high rejection rate caused by repeated positioning errors, improve the production efficiency and reduce the production cost.

Description

Back taper cylinder contrast detection measuring tool

Technical Field

The utility model relates to a detection measuring tool for a cylinder part, in particular to a reverse taper cylinder contrast detection measuring tool.

Background

Some combination formula products have higher precision to its built-up part, for example, in the production process of a drill bit tool bit, the dimensional accuracy that is used for the taut back taper cylinder of location requires more, need to process while detecting to avoid the grinding not enough to cause the product precision not high or the grinding too much causes the product to scrap. As shown in fig. 1, the inverted cone cylinder 1 includes a cylinder section 11 in the middle and inverted cone sections 14 at both ends (i.e. cone sections with outer end diameter larger than inner end diameter), the end surface 12 of the cylinder section 11 and the conical surface 13 of the inverted cone section 14 are close to each other, and the outer diameter of the inverted cone section 14 must meet the requirement to meet the high-precision machining requirement of the tool bit.

In the actual processing process, hardly realize the high accuracy to the external diameter size of back taper section 14 and detect, the tradition detects the mode and generally takes off back taper cylinder 1, measuring instrument such as reuse micrometer or optical measurement appearance detects (the assumption tapering is accurate) the outer end face diameter of back taper section 14, but the face size can be because of marginal burr, the reason such as breach leads to hardly realizing the high accuracy testing result, and if take off back taper cylinder 1 many times and detect in the numerically control grinder grinding process, can be by the change of processing tool bit position because of repeated assembly, thereby influence final grinding result, cause the rejection rate higher, and can reduce production efficiency.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the problems and provide a reverse taper cylinder contrast detection gauge which can directly realize high-precision online detection.

The utility model realizes the purpose through the following technical scheme:

a reverse taper cylinder contrast detection measuring tool comprises a first detection piece, a second detection piece and a lever micrometer, wherein the first detection piece comprises a first detection base body and a detection cylinder, the detection cylinder is installed at a first end of two ends of the first detection base body, and a first stud is arranged at a second end of the two ends of the first detection base body; the second detection piece comprises a second detection base body and a detection sphere, the detection sphere is installed at the first end of the two ends of the second detection base body, and the second end of the two ends of the second detection base body is provided with a second stud; the first detection piece is connected with a micrometer screw of the lever micrometer through the first stud, and the second detection piece is connected with a movable measuring anvil of the lever micrometer through the second stud.

The lever micrometer is a general length precision measuring tool for reading the distance between two measuring surfaces on an arc-shaped ruler frame by utilizing a lever principle and a dial, comprises a micrometer screw, a micro-cylinder, a movable measuring anvil, the dial and a pointer, and places a workpiece to be measured between the micrometer screw and the movable measuring anvil when in use.

Preferably, in order to further improve the measurement accuracy, the center line of the detection cylinder is perpendicular to the center line of the first stud, the center line of the first stud passes through the center point of the detection cylinder, and the center line of the second stud passes through the center point of the detection sphere.

The utility model has the beneficial effects that:

the utility model can rapidly detect whether the corresponding external diameter size of the inverted cone section of the inverted cone cylinder to be detected is the same as the standard size (assuming that the taper of the inverted cone cylinder to be detected is the same as that of the standard inverted cone cylinder) by matching the first detection part, the second detection part and the lever micrometer for use, and then measuring the inverted cone cylinder to be detected and observing the dial of the lever micrometer, and accordingly, the accurate grinding processing of the inverted cone cylinder can be realized, because the contact part is arranged in the middle of the inverted cone section but not on the end surface, the measurement error caused by factors such as edge burrs, notches and the like can be eliminated, the detection precision is improved and the operation is convenient, meanwhile, the contact part of the first detection part is designed to be a detection cylinder, so that the contact part is in line contact with the end surface of the cylindrical section of the inverted cone cylinder and the conical surface of the inverted cone section, the measuring tool is better ensured to be always attached to the end surface and the conical surface when rotating along the conical surface, the contact element of the second detection piece is designed into a detection sphere, so that the contact element is in point contact with both the end surface of the cylindrical section of the inverted cone cylinder and the conical surface of the inverted cone section, the highest point on the corresponding conical surface is more reliably detected, and a more accurate detection result is realized; the measuring tool can complete online detection without taking down the inverted cone cylinder from the machine tool, avoid the problem of high rejection rate caused by repeated positioning errors, improve the production efficiency and reduce the production cost.

Drawings

FIG. 1 is a perspective view of an inverted cone cylinder;

FIG. 2 is a perspective view of a first detecting member of the inverted cone cylinder contrast detecting gauge according to the present invention;

FIG. 3 is a perspective view of a second detecting member of the inverted cone cylinder contrast detecting gauge according to the present invention;

fig. 4 is a perspective view of the inverted cone cylinder contrast detection gauge of the present invention in use.

Detailed Description

The utility model will be further described with reference to the accompanying drawings in which:

as shown in fig. 2 to 4, the reverse taper cylinder contrast detection measuring tool of the present invention includes a first detection part 2, a second detection part 3 and a lever micrometer 4, the first detection part 2 includes a first detection base 22 and a detection cylinder 21, the detection cylinder 21 is installed at a first end of two ends of the first detection base 22, and a second end of the two ends of the first detection base 22 is provided with a first stud 23; the second detection member 3 comprises a second detection base 32 and a detection sphere 31, the detection sphere 32 is installed at a first end of two ends of the second detection base 32, and a second stud 33 is arranged at a second end of the two ends of the second detection base 32; the first detection part 2 is connected with a micrometer screw 42 of the lever micrometer 4 through a first stud 23, and the second detection part 3 is connected with a movable anvil 44 of the lever micrometer 4 through a second stud 33. Preferably, the center line of the detection cylinder 21 is perpendicular to the center line of the first stud 23, the center line of the first stud 23 passes through the center point of the detection cylinder 21, and the center line of the second stud 33 passes through the center point of the detection sphere 31.

With reference to fig. 1-4, when in use, a workpiece with a reverse taper section with a standard taper and an outer diameter is manufactured by high-precision equipment to be used as a standard workpiece, i.e. a standard reverse taper cylinder (not shown, refer to the reverse taper cylinder 1 to be measured); then, a standard inverted cone cylinder is used for determining a 0-scale value of the lever micrometer 4, and the process is as follows: the end face of the cylindrical section at one side of the detection cylinder 21 and the conical surface of the inverted conical section (refer to the end face 12 of the cylindrical section 11 of the inverted conical cylinder 1 to be detected and the conical surface 13 of the inverted conical section 14) are tightly closed by using the assembled measuring tool, the micro-barrel 41 of the lever micrometer 4 is rotated to adjust to a proper measuring range, namely, the pointer 45 can measure within the measuring range, then the lever micrometer 4 is swung, the measurement cylinder 21 is kept to be tightly contacted and slid on the end face of the cylindrical section and simultaneously rolls on the conical surface of the inverted conical section, the measurement sphere 31 slides on the end face and the conical surface, in the back-and-forth swing of the lever micrometer 4, the measurement sphere 31 can move along the central line of the movable measuring anvil 44, the pointer 45 can swing along with the measuring cylinder, a highest point position (maximum diameter) can appear, the dial 43 is rotated, and the scale value of 0 is aligned with the position of the maximum value pointed by the pointer, the standard inverted cone cylinder is transferred to the lever micrometer 4 by determining the 0-scale value, and the standard inverted cone cylinder is taken down.

And (4) grinding the inverted cone cylinder on a machine tool according to the required taper, wherein the taper is ensured by the precision of the machine tool. After the machined inverted cone cylinder 1 is preliminarily ground (when the inverted cone cylinder is roughly predicted to be ground in place, the preliminary grinding is carried out, and the detection cannot be carried out after the inverted cone cylinder is completely ground in place), the inverted cone cylinder 1 is kept in a fixture, the measuring tool with the scale mark of 0 is used for enabling the detection cylinder 21 to be close to the end face 12 of the cylindrical section 11 on one side of the inverted cone cylinder 1 and the conical surface 13 of the inverted cone section 14, the measuring process is repeated, when the highest point position (the maximum diameter value) is found out, the difference value between the scale values of the pointer 45 and 0 is read, if the difference value is larger than the allowed tolerance range, the grinding is continued, if the difference value is within the allowed tolerance range, the inverted cone cylinder 1 is determined, the grinding is completed, and the inverted cone cylinder 1 is qualified after being taken down.

The above embodiments are only preferred embodiments of the present invention, and are not intended to limit the technical solutions of the present invention, so long as the technical solutions can be realized on the basis of the above embodiments without creative efforts, which should be considered to fall within the protection scope of the patent of the present invention.

Claims

1. The utility model provides an inverted cone cylinder contrast measuring tool which characterized in that: the detection device comprises a first detection piece, a second detection piece and a lever micrometer, wherein the first detection piece comprises a first detection base body and a detection cylinder, the detection cylinder is installed at a first end of two ends of the first detection base body, and a first stud is arranged at a second end of the two ends of the first detection base body; the second detection piece comprises a second detection base body and a detection sphere, the detection sphere is installed at the first end of the two ends of the second detection base body, and the second end of the two ends of the second detection base body is provided with a second stud; the first detection piece is connected with a micrometer screw of the lever micrometer through the first stud, and the second detection piece is connected with a movable measuring anvil of the lever micrometer through the second stud.

2. The inverted cone cylinder contrast detection gauge according to claim 1, wherein: the center line of the detection cylinder is perpendicular to the center line of the first stud, the center line of the first stud penetrates through the center point of the detection cylinder, and the center line of the second stud penetrates through the center point of the detection sphere.