CN212705584U

CN212705584U - Automatic centering mounting fixture for round piece

Info

Publication number: CN212705584U
Application number: CN202021680739.9U
Authority: CN
Inventors: 胡伟健; 刘仲义; 贺赟晖; 吴清锋; 郑柏恒; 侯立本; 鲍锡松
Original assignee: Guangdong Quality Inspection Technology Development Co
Current assignee: Guangdong Quality Inspection Technology Development Co
Priority date: 2020-08-13
Filing date: 2020-08-13
Publication date: 2021-03-16
Anticipated expiration: 2030-08-13

Abstract

The utility model provides a circular member automatic centering sectional fixture, including fixed platform, multiunit array distribution or relative set up in the axis alignment mechanism of fixed platform periphery and set up in axis alignment mechanism and carry out terminal Y type clamping mechanism, wherein a plurality of axis alignment mechanisms's motion axle center crosses in an axle center point, will treat through Y type clamping mechanism that the centre gripping circular member presss from both sides tightly and is positioned this axle center point department. The utility model has the advantages of accurate positioning, rapid centering, high repeatability, repeated disassembly and assembly and low wear influence sensitivity.

Description

Automatic centering mounting fixture for round piece

Technical Field

The utility model belongs to the technical field of mechanical product, concretely relates to automatic centering sectional fixture of circular member.

Background

At present, in the aspect of mechanical coaxial installation technology, the spigot is mainly used for positioning, but the spigot positioning precision is general, and the requirements cannot be met in many occasions. In addition, a linkage device is used, a plurality of sliding blocks are used for clamping, the sliding blocks are driven by the same power, and the precision is greatly related to the synchronism of each sliding block. At present, a lot of equipment needs to be installed repeatedly, for example, a test bench of a precision speed reducer has high test coaxiality requirement, and basically, the test coaxiality requirement is within 0.03 mm. The high requirement can reach 0.01 mm. If the installation is repeated, accurate positioning can not be repeated, which brings great trouble to practical use. Therefore, a positioning jig which can be accurately and rapidly positioned is required.

SUMMERY OF THE UTILITY MODEL

To the problem that exists among the prior art, the utility model provides a circular member self-centering sectional fixture, the location is accurate, and the centering is swift, and the repeatability is high, and it is low to relapse dismouting wearing and tearing influence sensitivity.

In order to realize the above-mentioned purpose, the utility model provides a circular member automatic centering sectional fixture, including fixed platform, multiunit array distribution or relative set up in the axis calibration mechanism of fixed platform periphery and set up in the Y type clamping mechanism that axis calibration mechanism carried out the end, wherein the motion axle center of a plurality of axis calibration mechanisms intersects in an axle center point, will treat through Y type clamping mechanism that the centre gripping circular member clamp is located this axle center point department.

According to the utility model discloses a another kind of embodiment, Y type clamping mechanism includes Y type holder, two butt components, and two butt components set up respectively on two side arms of Y type holder.

According to another embodiment of the invention, the abutment member comprises a steel ball, a roller or a cone.

According to the utility model discloses a another kind of embodiment, axis aligning gear includes cylinder, slider and guide rail, and the cylinder promotes the slider and carries out reciprocating motion along the guide rail, and the main arm of Y type holder sets up on the slider.

According to another embodiment of the present invention, the two abutment members are symmetrical about the main arm of the Y-shaped clamp, in particular about the axis of motion of the main arm of the Y-shaped clamp.

According to the utility model discloses a another kind of embodiment, fixed platform is the low friction platform, and the low friction platform can be made with self-lubricating material, also can regard as the support with the steel ball array, and the below of steel ball array has elastic support, is not enough to push down the steel ball by the weight of test piece and produces the displacement. After the automatic centering is finished, a certain clamping force is adopted, so that the steel ball can be completely descended below the plane of the supporting platform.

The utility model discloses in, can set up the axis alignment mechanism more than three groups, the Y type holder forward motion among the line alignment mechanism drives Y type clamping mechanism will be pressed from both sides tightly by the clamping product, when compressing tightly the measured piece, can be so that the axis of passing through Y type structure by the measured piece centre of a circle, just realized self-centering by the clamping product this moment.

The pressing force is enough to drive the tested piece to move, but not enough to deform the tested piece, so that the tested piece is damaged.

The utility model provides an axis aligning gear can be the combination of cylinder, slider and guide rail, and the cylinder promotes the slider and can make a round trip centripetal movement, also can be other modes such as guide rail or ball screw, and the during operation carries out under impartial pressure and compresses tightly entally.

Compared with the prior art, the beneficial effects of the utility model are that: the novel coaxial positioning device has the advantages that the novel coaxial positioning device can be suitable for installation of products with different diameters on the occasion that mechanical products are coaxially installed, can be repeatedly disassembled and assembled, is low in influence sensitivity on abrasion, accurate in positioning and quick in centering, and is very convenient and quick in actual use.

The present invention will be described in further detail with reference to the accompanying drawings.

Drawings

FIG. 1 is a top view of the self-centering mounting fixture of the present invention;

FIG. 2 is a partial schematic view of the self-centering mounting fixture of the present invention clamping a circular workpiece;

fig. 3 shows another structure of the Y-shaped clamping member of the self-centering mounting fixture of the present invention.

Detailed Description

In the present embodiment, a round workpiece is exemplified, but the present invention is not limited to the above workpiece, and may be a round workpiece.

As shown in fig. 1, the self-centering installation jig of the present embodiment includes a low friction platform 1, a Y-shaped clamping mechanism 2, an axis alignment mechanism 3, and a circular workpiece 4.

The axis calibration mechanisms 3 of the present embodiment are three groups, and are uniformly distributed along the circumferential direction, the interval between each group of axis calibration mechanisms 3 is 120 °, and the motion axes of the plurality of axis calibration mechanisms 3 intersect at an axis point, that is, the circle center of the mounted circular test piece.

The Y-clamp mechanism is mounted on the axis alignment mechanism 3, and includes a Y-clamp 21 and two abutting members 22, the Y-clamp 21 has two structures as shown in fig. 3, the two abutting members 22 are respectively disposed on two side arms 21b of the Y-clamp, and the abutting members 22 are steel balls as used in fig. 2.

Wherein the axis aligning mechanism 3 in this embodiment comprises an air cylinder 31, a slide block 32 and a guide rail 33, the air cylinder 31 pushes the slide block 32 to reciprocate along the guide rail 33, the main arms 21a of the Y-shaped clamping member are arranged on the slide block 32, the two abutting members 22 have the same size, and are symmetrically arranged along the movement axis of the main arms 21b of the Y-shaped clamping member.

The angle between the two side arms 21b of the Y-clamp in this embodiment is preferably 120 ° as shown in figure 1.

The following describes the use of a cylindrical workpiece:

when the Y-type clamping mechanism is used, a cylindrical workpiece is placed in the middle of the clamp, the sliding block 32 is driven by the air cylinder 31 to slide on the guide rail 33, the Y-type clamping mechanism is driven to move forwards, and when the abutting components 22 of the Y-type clamping mechanisms all contact the cylindrical workpiece, the cylindrical workpiece can be considered to be in the same position with the preset circle center.

When the cylindrical workpiece is pressed, the circle center of the cylindrical workpiece can pass through the axis of the Y-shaped clamping part 21, the contact point of the Y-shaped clamping part 21 and the cylindrical workpiece and the tangent line of the circular workpiece are shown in fig. 2, and the intersection point of the two tangent lines is connected with the circle center of the cylindrical workpiece, which is a Y shape.

Although the present invention has been described with reference to the preferred embodiments, it is not intended to limit the scope of the invention. Any person skilled in the art can make some modifications without departing from the scope of the invention, i.e. all equivalent modifications made according to the invention shall be covered by the scope of the invention.

Claims

1. The utility model provides a circular member automatic centering sectional fixture, its characterized in that, including fixed platform (1), multiunit array distribution or set up relatively in axis alignment mechanism (3) of fixed platform (1) periphery and set up in axis alignment mechanism (3) carry out terminal Y type clamping mechanism (2), wherein a plurality of the motion axle center of axis alignment mechanism (3) intersects in an axle center point, through Y type clamping mechanism (2) will treat that the centre gripping circular member presss from both sides tightly and fixes in this axle center point department.

2. The circular member self-centering mounting fixture according to claim 1, wherein the Y-shaped clamping mechanism (2) comprises a Y-shaped clamp (21), two abutment members (22), the two abutment members (22) being respectively provided on two side arms (21a) of the Y-shaped clamp (21).

3. A circular member self-centering mounting fixture as claimed in claim 2, wherein said abutment member (22) comprises a steel ball, a roller or a cone.

4. The circular member self-centering mounting fixture according to claim 2, wherein the axis aligning mechanism (3) comprises a cylinder (31), a slider (32) and a guide rail (33), the cylinder (31) pushes the slider (32) to reciprocate along the guide rail (33), and the main arm (21b) of the Y-shaped clamp member (21) is provided on the slider (32).

5. Circular member self-centering mounting fixture according to claim 2, wherein the two abutment members (22) are symmetrical with respect to the main arm (21b) of the Y-shaped clamp (21).

6. Circular member self-centering mounting fixture according to claim 1, characterized in that the fixed platform (1) is a low friction platform.