CN220437316U - Tool for measuring R angle of small step in hole - Google Patents

Abstract

The utility model discloses an in-hole small-step R angle measuring tool, which belongs to the field of measuring tools and comprises a base, wherein an inclined plane is arranged on the upper plane of the base, a rotating shaft perpendicular to the inclined plane is arranged in the center of the inclined plane, and a rotating disc is rotated on the rotating shaft; the rotary table is provided with a first positioning block, an upper clamping block protruding to one side is arranged above the first positioning block, the bottom of the upper clamping block is provided with a lower clamping block capable of lifting, the lower clamping block is provided with a positioning boss, and the diameter of the positioning boss is equal to the diameter of an inner hole of the non-measuring end columnar structure of the workpiece; the rotary table is further provided with a connecting block, a second positioning block is detachably connected to the connecting block, an upper positioning block extending towards the center of the rotary table is arranged above the second positioning block, a guide positioning hole is formed in the upper positioning block, the guide positioning hole coincides with the center of the rotary table, a guide positioning column can be inserted into the guide positioning hole, and the diameter of the guide positioning column is equal to that of an inner hole at the upper end of the columnar structure of the workpiece measuring end. The utility model can rapidly measure the parts through the structure, and simultaneously ensure the measurement precision and accuracy.

Description

Tool for measuring R angle of small step in hole

Technical Field

The utility model relates to the field of measuring instruments, in particular to an in-hole small-step R angle measuring tool.

Background

The work piece characteristic that this scheme was aimed at all is equipped with a columnar structure in the area hole at both ends, has a little step in the hole of one of them columnar structure, and little step department has the transition fillet, and this transition fillet is very high in the cooperation of later stage precision requirement, consequently, must measure and confirm whether it is qualified, the present measurement mode is through vice anchor clamps press from both sides tight other end columnar structure to make whole work piece slightly slope, then get the point, draw out the profile with the help of the profilometer measuring needle again, the manual point diameter size of evaluation, whole process, the measurement gets the point few, the center minimum looks for difficulty, the measurement deviation is big, the precision is poor, the repeatability is poor, moreover the operation is very complicated.

Aiming at the problems in the prior art, the utility model designs and manufactures a tool for measuring the R angle of a small step in a hole to overcome the defects.

Disclosure of Invention

For the problems existing in the prior art, the tool for measuring the R angle of the small step in the hole can improve the measuring precision and efficiency of the R angle of the small step in the hole at one end of the workpiece.

In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows: the tool comprises a base, wherein an inclined plane is arranged on the upper plane of the base, a rotating shaft perpendicular to the inclined plane is arranged in the center of the inclined plane, and a turntable is rotated on the rotating shaft;

the rotary table is provided with a first positioning block, an upper clamping block protruding towards one side is arranged above the first positioning block, the bottom of the upper clamping block is provided with a lower clamping block capable of lifting, the lower clamping block is provided with a positioning boss, and the diameter of the positioning boss is equal to the diameter of an inner hole of a non-measuring end column-shaped structure of a workpiece;

still be equipped with the connecting block on the carousel, can dismantle on the connecting block and be connected with the second locating piece, the second locating piece top is equipped with the last locating piece that extends to the carousel center, upward be equipped with the direction locating hole on the locating piece, the direction locating hole with the carousel center coincidence, can insert in the direction locating hole and be equipped with the direction reference column, the diameter of direction reference column equals the work piece measuring end columnar structure upper end hole diameter.

Preferably, the distance between the center of the positioning boss and the center of the turntable is equal to the distance between the columnar structures at two ends of the workpiece.

Preferably, the lower end of the guiding positioning column is provided with a guiding taper surface.

Preferably, a guiding taper surface is arranged at the upper end of the positioning boss of the lower clamping block.

Preferably, the connecting block is provided with a plurality of guide holes, and the second positioning block is provided with a plurality of guide columns corresponding to the guide holes.

Preferably, a guide sleeve is arranged in the guide positioning hole, and the guide positioning column is guided to lift in the guide sleeve.

Preferably, the first positioning block is provided with a guide lifting groove, the guide lifting groove and the upper clamping block are arranged on the same side of the first positioning block, and the lower clamping block can lift in the guide lifting groove;

the top of the first positioning block is provided with a connecting hole, the connecting hole penetrates through the guide lifting groove, the top of the lower clamping block positioned in the guide lifting groove is provided with a threaded hole, and a bolt is arranged in the connecting hole and is in threaded connection with the threaded hole.

The utility model has the advantages that:

1. according to the utility model, the workpiece is positioned by utilizing the positioning structure on the tilting turntable, so that the cylindrical inner hole of the measuring end of the workpiece can be tilted, and the measuring needle point of the profiler is convenient to take; the guide positioning column in the upper guide positioning hole of the upper positioning block is matched with the inner hole at the upper end of the workpiece measurement end column structure, so that the inner hole of the measurement end column structure is located at the center of the turntable, the turntable can be used for rotating to realize rotation measurement, the measurement feasibility and the measurement accuracy are greatly improved, and the upper positioning block and the guide positioning column are only required to be removed during measurement.

2. The workpiece is positioned by adopting the mode that the upper clamping block and the lower clamping block clamp the non-measuring end column-shaped structure of the workpiece, the lower clamping block is of a lifting structure, the guide positioning column is conveniently adjusted when being matched with the inner hole at the upper end of the measuring end column-shaped structure of the workpiece, and the lower clamping block is particularly driven to lift by adopting a bolt, so that the operation is simple and stable.

Drawings

FIG. 1 is a schematic structural view of an in-hole small step R angle measuring tool;

fig. 2 is a schematic structural view of the tool for measuring the small-step R angle in the hole, with the second positioning block and the guiding positioning column removed.

In the figure: the device comprises a 1-base, a 2-inclined plane, a 3-rotary table, a 4-rotary shaft, a 5-first positioning block, a 6-upper clamping block, a 7-lower clamping block, an 8-bolt, a 9-connecting block, a 10-second positioning block, an 11-upper positioning block, a 12-guiding positioning column, a 13-guiding lifting groove and a 14-guiding hole.

Detailed Description

The present utility model is further described below with reference to the accompanying drawings for the convenience of understanding by those skilled in the art.

As shown in FIG. 1, the tool for measuring the R angle of the small step in the hole comprises a base 1, wherein an inclined surface 2 is arranged on the upper plane of the base 1, a rotating shaft 4 perpendicular to the inclined surface 2 is arranged at the center of the inclined surface 2, a rotating disc 3 rotates on the rotating shaft 4, and the inclination angle of the rotating disc 3 facilitates the measuring needle of the profiler to take the R angle of the small step in the columnar hole of the measuring end of the workpiece vertically.

In order to ensure the positioning of a workpiece, a first positioning block 5 is arranged on a turntable 3, an upper clamping block 6 protruding to one side is arranged above the first positioning block 5, a lower clamping block 7 capable of lifting is arranged at the bottom of the upper clamping block 6, a positioning boss is arranged on the lower clamping block 7, the diameter of the positioning boss is equal to the diameter of an inner hole of a non-measuring end columnar structure of the workpiece, and the distance between the center of the positioning boss and the center of the turntable 3 is equal to the distance between two columnar structures at two ends of the workpiece;

the turntable 3 is also provided with a connecting block 9, the connecting block 9 is detachably connected with a second positioning block 10, an upper positioning block 11 extending towards the center of the turntable 3 is arranged above the second positioning block 10, a guide positioning hole is formed in the upper positioning block 11, the guide positioning hole coincides with the center of the turntable 3, a guide positioning column 12 can be inserted into the guide positioning hole, a guide sleeve is preferably arranged in the guide positioning hole, the guide positioning column 12 is guided to lift in the guide sleeve, and the diameter of the guide positioning column 12 is equal to the diameter of an inner hole at the upper end of the columnar structure of the workpiece measuring end.

According to the utility model, the workpiece is positioned by utilizing the positioning structure on the tilting turntable 3, so that the cylindrical inner hole of the measuring end of the workpiece can tilt, and the measuring needle point of the profiler is convenient to take; the guide positioning column 12 in the guide positioning hole on the upper positioning block 11 is matched with the inner hole at the upper end of the columnar structure of the workpiece, so that the inner hole of the columnar structure of the measuring end is ensured to be positioned at the center of the turntable 3, the turntable 3 can be used for rotating to realize rotation measurement, the measurement feasibility and the measurement accuracy are greatly improved, and the upper positioning block 11 and the guide positioning column 12 are only required to be removed during measurement.

The first positioning block 5 is provided with a guide lifting groove 13, the guide lifting groove 13 and the upper clamping block 6 are arranged on the same side of the first positioning block 5, the lower clamping block 7 can lift in the guide lifting groove 13, the top of the first positioning block 5 is provided with a connecting hole, the connecting hole penetrates through the guide lifting groove 13, the top of the lower clamping block 7 positioned in the guide lifting groove 13 is provided with a threaded hole, and a bolt 8 is arranged in the connecting hole and in threaded connection with the threaded hole. The workpiece is positioned by adopting the mode that the upper clamping block 6 and the lower clamping block 7 clamp the non-measuring end column structure of the workpiece, the lower clamping block 7 is of a lifting structure, the guide positioning column 12 is conveniently adjusted when being matched with an inner hole at the upper end of the measuring end column structure of the workpiece, and the lower clamping block 7 is particularly driven to lift by adopting the mode that the bolt 8 is driven to lift, so that the operation is simple and stable.

The lower end of the guide positioning column 12 is provided with a guide taper surface, so that the guide positioning column 12 is convenient to be matched with an inner hole at the upper end of a columnar structure of a workpiece measuring end; the upper end of the positioning boss of the lower clamping block 7 is provided with a guiding taper surface, and the purpose is to facilitate the matching of the positioning boss and the inner hole of the non-measuring end column-shaped structure of the workpiece.

Because the second positioning block 10 and the guiding positioning column 12 need to be removed when the measuring needle of the profiler takes a point, a plurality of guiding holes 14 are preferably arranged on the connecting block 9 for facilitating the removal and installation of the second positioning block 10, and a plurality of guiding columns are arranged on the second positioning block 10 and correspond to the guiding holes 14.

It should be understood that these examples are for the purpose of illustrating the utility model only and are not intended to limit the scope of the utility model. Furthermore, it is to be understood that various changes, modifications and/or variations may be made by those skilled in the art after reading the technical content of the present utility model, and that all such equivalents are intended to fall within the scope of protection defined in the claims appended hereto.

Claims (7)

1. The tool for measuring the R angle of the small step in the hole is characterized by comprising a base, wherein an inclined plane is arranged on the upper plane of the base, a rotating shaft perpendicular to the inclined plane is arranged at the center of the inclined plane, and a turntable is rotated on the rotating shaft;

the rotary table is provided with a first positioning block, an upper clamping block protruding towards one side is arranged above the first positioning block, the bottom of the upper clamping block is provided with a lower clamping block capable of lifting, the lower clamping block is provided with a positioning boss, and the diameter of the positioning boss is equal to the diameter of an inner hole of a non-measuring end column-shaped structure of a workpiece;

still be equipped with the connecting block on the carousel, can dismantle on the connecting block and be connected with the second locating piece, the second locating piece top is equipped with the last locating piece that extends to the carousel center, upward be equipped with the direction locating hole on the locating piece, the direction locating hole with the carousel center coincidence, can insert in the direction locating hole and be equipped with the direction reference column, the diameter of direction reference column equals the work piece measuring end columnar structure upper end hole diameter.

2. The tool for measuring the R angle of the small step in the hole according to claim 1, wherein the distance between the center of the positioning boss and the center of the turntable is equal to the distance between columnar structures at two ends of the workpiece.

3. The tool for measuring the R angle of the small step in the hole according to claim 1, wherein the lower end of the guiding positioning column is provided with a guiding taper surface.

4. The tool for measuring the R angle of the small step in the hole according to claim 1, wherein a guiding taper surface is arranged at the upper end of the positioning boss of the lower clamping block.

5. The tool for measuring the R angle of the small step in the hole according to claim 1, wherein a plurality of guide holes are formed in the connecting block, and a plurality of guide posts corresponding to the guide holes are formed in the second positioning block.

6. The tool for measuring the R angle of the small step in the hole according to claim 1, wherein a guide sleeve is arranged in the guide positioning hole, and the guide positioning column is guided to lift in the guide sleeve.

7. The tool for measuring the R angle of the small step in the hole according to claim 1, wherein a guide lifting groove is formed in the first positioning block, the guide lifting groove and the upper clamping block are arranged on the same side of the first positioning block, and the lower clamping block can lift in the guide lifting groove;

the top of the first positioning block is provided with a connecting hole, the connecting hole penetrates through the guide lifting groove, the top of the lower clamping block positioned in the guide lifting groove is provided with a threaded hole, and a bolt is arranged in the connecting hole and is in threaded connection with the threaded hole.