CN106949803B

CN106949803B - Flexible floating measurement device

Info

Publication number: CN106949803B
Application number: CN201710258248.1A
Authority: CN
Inventors: 张全
Original assignee: Suzhou Pfl Precision Measuring Instruments Co ltd
Current assignee: Suzhou Pfl Precision Measuring Instruments Co ltd
Priority date: 2017-04-19
Filing date: 2017-04-19
Publication date: 2023-09-22
Anticipated expiration: 2037-04-19
Also published as: CN106949803A

Abstract

The invention discloses a flexible floating measurement device, which comprises a floating assembly and a pneumatic measuring head arranged on the floating assembly, wherein the floating assembly comprises: the base, set up floating body on the base, make floating body rolling contact's rolling element, make the holder of rolling element automatic centering, the base will floating body is fixed in on the machinery frock, the floating body includes two-layer structure at least, the holder sets up between two-layer structure, all be equipped with between holder and the two-layer structure the rolling element, the rolling element by the holder divide into two-layer, the holder will two-layer the rolling element is automatic centering. The measuring device adopts the flexible floating mechanism, which is enough to cover most of positioning errors of parts, so that the measuring mechanism or the sharpening mechanism smoothly enters the inner hole.

Description

Flexible floating measurement device

Technical Field

The invention relates to the technical field of precision measurement, in particular to a flexible floating measurement device.

Background

In automatic measurement or automatic grinding applications, large positioning errors of parts are often encountered, but the tolerance of an inner hole to be measured or ground is extremely small, and the small tolerance also leads to small clearance between a measuring head and the part during measurement or grinding. Because of the large positioning error of the parts, the measuring head or the grinding head cannot quickly and smoothly enter the inner hole, and automatic measurement or automatic grinding cannot be realized.

Disclosure of Invention

The invention aims to overcome the problems in the prior art and provide a flexible floating measuring device, which adopts a flexible floating mechanism to cover most of positioning errors of parts, so that the measuring mechanism or a grinding mechanism smoothly enters an inner hole.

In order to achieve the technical purpose and the technical effect, the invention is realized by the following technical scheme:

a flexible float measurement device comprising a float assembly and a pneumatic gauge head disposed on the float assembly, the float assembly comprising: the automatic centering device comprises a base, floating bodies arranged on the base, rolling bodies enabling the floating bodies to be in rolling contact, and a retainer enabling the rolling bodies to be automatically centered, wherein the base is used for fixing the floating bodies on a mechanical tool, the floating bodies at least comprise two layers of structures, the retainer is arranged between the two layers of structures, the rolling bodies are arranged between the retainer and the two layers of structures, the rolling bodies are divided into two layers by the retainer, and the retainer is used for automatically centering the two layers of rolling bodies;

one layer of structure of the floating body is fixed on the base, the other layer of structure of the floating body is fixed on the pneumatic measuring head, the rolling body enables the two layers of structures of the floating body to roll and contact after the rolling body is automatically centered through the retainer, automatic floating of the two layers of structures of the floating body is achieved, and the floating body drives the pneumatic measuring head to be coaxial with a workpiece to be detected.

Preferably, the floating body further comprises an outer ring for fixing the floating body, and the outer ring is arranged on the periphery of the floating body and the retainer.

Preferably, the pneumatic gauge head comprises: the body of cylindric, the inside of body is hollow channel, a free end lock of body to on the body floats, be equipped with a round hole on the other free end of body, be close to the position department of floating body is equipped with the gas circuit connector, be equipped with at least one air cock on the body wall of body.

Preferably, the air nozzles are arranged on the body wall of the body at equal intervals.

Preferably, the air tap is arranged at a position close to the round hole.

Preferably, the retainer is of a circular ring sheet structure, a plurality of centering holes are formed in the retainer, and the rolling bodies are automatically centered through the centering holes.

Preferably, the centering holes are equally spaced.

Preferably, the outer diameter of the retainer is larger than the outer diameter of the floating body.

Preferably, the floating assembly further comprises a protective cover, and the protective cover is sleeved on the floating assembly.

The beneficial effects of the invention are as follows:

the flexible floating mechanism is applied in the invention, the floating amount can reach 0.5mm, and most part positioning errors can be covered, so that the measuring mechanism or the grinding mechanism smoothly enters the inner hole. Meanwhile, the ultra-high precision rolling body applied by the mechanism eliminates the axial gap, and the ultra-high precision rotating body only has small radial runout and can smoothly enter the aperture of the small gap, so that the high-precision inner hole automatic measurement is realized. Meanwhile, the mechanism can be applied to a vertical honing machine to realize automatic grinding of the inner hole.

The foregoing description is only an overview of the present invention, and is intended to provide a better understanding of the present invention, as it is embodied in the following description, with reference to the preferred embodiments of the present invention and the accompanying drawings. Specific embodiments of the present invention are given in detail by the following examples and the accompanying drawings.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the description of the embodiments of the present invention will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of the structure of the present invention;

FIG. 2 is a cross-sectional view of FIG. 1;

FIG. 3 is a schematic view of the structure of the present invention with a protective cover added;

FIG. 4 is a cross-sectional view of a portion of the floating assembly of the present invention;

the device comprises a 1-floating assembly, a 2-pneumatic measuring head, a 101-base, a 102-floating body, a 103-retainer, a 104-centering hole, a 105-rolling body, a 106-outer ring, a 107-protective cover, a 201-body, a 202-road-starting connector and a 203-air tap.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

Examples

Referring to fig. 1-4, a flexible float measuring device is disclosed in this embodiment, which essentially has a float assembly 1 and a pneumatic gauge head 2 arranged on the float assembly 1, and a protective cover 107 for protecting the float assembly 1.

Specifically, the floating assembly 1 includes: a base 101, a floating body 102 provided on the base 101, a rolling body 105 for rolling the floating body 102, and a cage 103 for centering the rolling body 105 automatically, wherein the outer ring 106 is provided on the outer circumference of the floating body 102 and the cage 103 for fixing the floating body 102.

The base 101 fixes the floating body 105 to a mechanical tool, the floating body 105 includes at least a two-layer structure, the cage 103 is disposed between the two-layer structure, the rolling bodies 105 are disposed between the cage 103 and the two-layer structure, the rolling bodies 105 are divided into two layers by the cage 103, and the cage 103 automatically centers the two layers of the rolling bodies 105.

The cage 103 has a circular ring-shaped sheet structure, the outer diameter of the cage 103 is larger than the outer diameter of the floating body 102, a plurality of centering holes 104 are provided in the cage 103, and the rolling bodies 105 are automatically centered through the centering holes 104.

Further, the centering holes 104 are disposed at equal intervals.

Flexible floating principle of the above floating assembly: one layer structure of the floating body 102 is fixed on the base 101, the other layer structure of the floating body 102 is fixed on the pneumatic measuring head 2, the rolling body 105 makes the two layers structure of the floating body 102 roll and contact after the rolling body 105 is automatically centered by the retainer 103, the two layers structure of the floating body 105 automatically floats, and the floating body 105 drives the pneumatic measuring head 2 to be coaxial with a workpiece to be detected.

In this embodiment, the rolling elements 105 may be steel balls.

The pneumatic gauge head 2 includes: the device comprises a cylindrical body 201, wherein a hollow channel is formed in the body 201, a free end of the body 201 is locked on the floating body 102, a round hole 204 is formed in the other free end of the body 201, an air passage connector 202 is arranged at a position close to the floating body 102, and at least one air tap 203 is arranged on the body wall of the body 201.

Further, the air nozzles 203 are disposed on the body wall of the main body 201 at equal intervals. The air tap 203 is disposed near the circular hole 204.

By using the flexible floating mechanism, the floating amount can reach 0.5mm, so that most part positioning errors can be covered, and the measuring mechanism or the grinding mechanism smoothly enters the inner hole. Meanwhile, the ultra-high precision rolling body applied by the mechanism eliminates the axial gap, and the ultra-high precision rotating body only has small radial runout and can smoothly enter the aperture of the small gap, so that the high-precision inner hole automatic measurement is realized. Meanwhile, the mechanism can be applied to a vertical honing machine to realize automatic grinding of the inner hole.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A flexible float measurement device comprising a float assembly and a pneumatic gauge head disposed on the float assembly, the float assembly comprising: the automatic centering device comprises a base, floating bodies, rolling bodies, a retainer and an outer ring, wherein the floating bodies, the rolling bodies, the retainer are arranged on the base, the retainer enables the rolling bodies to be centered automatically, the outer ring is used for fixing the floating bodies, the base is used for fixing the floating bodies on a mechanical tool, the floating bodies comprise two layers of structures, the retainer is arranged between the two layers of structures, the rolling bodies are arranged between the retainer and the two layers of structures, the rolling bodies are divided into two layers by the retainer, and the retainer enables the two layers of rolling bodies to be centered automatically;

the retainer is of a circular ring sheet structure, and the inner diameter of the retainer is larger than the outer diameter of the floating body;

the retainer is provided with a plurality of centering holes, and the rolling bodies automatically center through the centering holes;

one layer of structure of the floating body is fixed on the base, the other layer of structure of the floating body is fixed on the pneumatic measuring head, the rolling body enables the two layers of structures of the floating body to roll and contact after the rolling body is automatically centered through the retainer, so that the two layers of structures of the floating body automatically float, and the floating body drives the pneumatic measuring head to be coaxial with a workpiece to be detected;

the outer ring is arranged on the periphery of the floating body and the retainer;

the pneumatic measuring head comprises a cylindrical body, wherein a hollow channel is formed in the body, one free end of the body is locked on the floating body, a round hole is formed in the other free end of the body, a gas path connector is arranged at a position close to the floating body, and at least one gas nozzle is arranged on the body wall of the body;

the rolling body can eliminate the axial gap, only tiny radial runout can smoothly enter the aperture of the tiny gap of the workpiece to be detected, and automatic measurement or automatic grinding of the inner hole is realized.

2. The flexible float measurement device of claim 1, wherein said air nozzles are equally spaced on a body wall of said body.

3. The flexible float measurement device of claim 2 wherein said air tap is disposed proximate said circular aperture.

4. The flexible floating measurement device of claim 1, wherein the centering holes are equally spaced.

5. The flexible floating measurement device of claim 1, further comprising a protective cover over the floating assembly.