CN214265298U

CN214265298U - Workpiece positioning device

Info

Publication number: CN214265298U
Application number: CN202023086787.8U
Authority: CN
Inventors: 单宝山; 唐超; 徐连强; 于世国; 李玉金; 周健; 孙述茂
Original assignee: Himile Mechanical Science and Technology Shandong Co Ltd
Current assignee: Himile Mechanical Science and Technology Shandong Co Ltd
Priority date: 2020-12-17
Filing date: 2020-12-17
Publication date: 2021-09-24
Anticipated expiration: 2030-12-17

Abstract

The utility model discloses a work piece positioner has solved the problem that needs relocation, alignment after the work piece removes among the prior art, has the convenience and to the work piece location, improves work efficiency's beneficial effect, and concrete scheme is as follows: a workpiece positioning device comprises a positioning mechanism for positioning a workpiece, wherein the positioning mechanism comprises at least two convex parts, the convex parts can extend into an opening of the workpiece, at least one of the convex parts can move relative to the other convex part, and when the convex parts move to the edge of the opening, the workpiece is positioned through the two convex parts.

Description

Workpiece positioning device

Technical Field

The utility model belongs to the technical field of machining and specifically relates to a work piece positioner.

Background

The statements in this section merely provide background information related to the present disclosure and may not necessarily constitute prior art.

At present, in industrial production, a plurality of annular workpieces exist, and in the process of processing the annular workpieces, the annular workpieces need to be positioned, aligned and fixed on a workbench of equipment, and the traditional workpiece positioning, aligning and clamping modes have the problems of time-consuming separation and low efficiency; the workpiece needs to be fixed from the peripheral side of the workpiece, and the workpiece is easy to deform and even cause certain damage under clamping; the inventor also finds that the workpiece needs to be repositioned, aligned and clamped after moving between different working tables, which is time-consuming and labor-consuming.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art exists, the utility model aims at providing a workpiece positioning device, simple structure, convenient operation, convenient alignment, the clamping to the work piece, greatly reduced intensity of labour, improved work efficiency.

In order to achieve the above purpose, the present invention is realized by the following technical solution:

a workpiece positioning device comprises a positioning mechanism for positioning a workpiece, wherein the positioning mechanism comprises at least two convex parts, the convex parts can extend into an opening of the workpiece, at least one of the convex parts can move relative to the other convex part, and when the convex parts move to the edge of the opening, the workpiece is positioned through the two convex parts.

According to the workpiece positioning device, the positioning mechanism is provided with at least two convex parts, the plurality of convex parts can extend into the workpiece opening, one convex part keeps the position unchanged, and the other convex parts move, so that the workpiece is positioned through the convex parts after the convex parts move to the set position; alternatively, the workpiece is positioned by moving the plurality of convex portions to multiple sides, the positioning speed of the workpiece is high, and the workpiece can be quickly repositioned even after the workpiece is moved.

In some embodiments, the positioning mechanism includes two convex portions, both of which are fixed to the linear driving unit, and the linear driving unit drives the convex portions to move, and the linear driving unit drives the two convex portions to move simultaneously, so as to position the workpiece.

According to the workpiece positioning device, the two convex parts are respectively arranged on the corresponding ram, the two rams are respectively connected with the linear driving unit, and the linear driving unit drives the two rams to move simultaneously and reversely; and the ram is matched with the linear guide rail, and the linear guide rail is fixed on the base or the numerical control equipment workbench.

In the workpiece positioning device, the workpiece opening is generally a circular hole, and at least one side of the convex part is a cambered surface to match with the workpiece opening.

A workpiece positioning device as described above, said male portion being threadably connected to said ram;

the surface of each ram is provided with at least one mounting hole for mounting the convex part, and the mounting position of the convex part can be adjusted according to the size of a workpiece.

In order to better match with the workpiece opening, each ram is provided with two convex parts; and the two convex parts arranged on each ram are arranged at a set distance.

According to the workpiece positioning device, the linear driving unit comprises a left-right-handed integrated ball screw, the left-right-handed integrated ball screw is mounted through a screw support, a ball nut is arranged on the left-right-handed integrated ball screw, and the ball nut is fixed with the ram; the linear driving unit drives the two rams to move along the linear guide rail, and the stability and accuracy of the linear reciprocating motion of the positioning mechanism can be ensured and the precision of the workpiece in alignment can be ensured through the arrangement of the linear guide rail.

According to the workpiece positioning device, the convex part is the limiting column, the limiting column can be used as a positioning reference, self-centering of the workpiece is achieved, and the safety factor of electromagnetic adsorption is improved.

The workpiece positioning device further comprises the electric permanent magnetic chuck, the electric permanent magnetic chuck is fixedly arranged on two sides of the positioning mechanism, the electric permanent magnetic chuck is arranged on the base or the numerical control equipment workbench, the electric permanent magnetic chuck can adsorb the workpiece to clamp the workpiece, the workpiece is not required to be clamped and fixed from the periphery of the workpiece, deformation or damage to the workpiece caused by direct clamping is avoided, the clamping speed is high, and the working efficiency is effectively improved.

According to the workpiece positioning device, the plurality of electric permanent magnetic chucks are arranged on the two sides of the positioning mechanism, and the electric permanent magnetic chucks stably support the workpiece and can guarantee quick clamping of the workpiece.

Above-mentioned the utility model has the advantages as follows:

1) the utility model can be extended into the workpiece opening through the convex part of the positioning mechanism by the arrangement of the integral device, the convex part moves to the edge of the opening, the workpiece is quickly positioned through the two convex parts, and the positioning accuracy is ensured; the electric permanent magnetic chuck is further convenient for clamping the workpiece, the whole machine can be beneficial to aligning and clamping the workpiece, the labor intensity is effectively reduced, and the working efficiency is improved; and even the work piece is after removing, also can realize quick fixed simple and convenient.

2) The utility model adsorbs the workpiece through the electric permanent magnetic chuck, the clamping mode ensures that the workpiece can not deform at all, and the ram is provided with the limiting column, thereby not only being used as a positioning reference to realize self-centering, but also improving the safety factor of electromagnetic adsorption; the workpiece is placed on the electric permanent magnetic chuck, the clamping time is less than 1 second, and the clamping efficiency is greatly improved.

3) The utility model discloses a control integrative ball screw of revolving realizes simultaneously, with fast the inside or outside motion of both sides ram, has guaranteed that the displacement that the convex part removed is the same, accomplishes the location work of work piece through spacing post on the ram.

4) The utility model discloses a motor drive revolves integrative ball and feeds about, but adjustable speed guarantees that reciprocating motion speed is even, has reduced the intensity of labour of artifical adjustment work piece position, also can be connected with the controller, and processing establishes the basis for unloading in the automation.

Drawings

The accompanying drawings, which form a part of the specification, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without unduly limiting the scope of the invention.

Fig. 1 is a schematic view of a workpiece positioning device according to one or more embodiments of the present disclosure.

Fig. 2 is a schematic cross-sectional view a-a of fig. 3 according to one or more embodiments of the present disclosure.

Fig. 3 is a front view of a workpiece positioning device according to one or more embodiments of the present disclosure.

In the figure: the spacing or dimensions between each other are exaggerated to show the location of the various parts, and the schematic is shown only schematically.

Wherein: 1. the device comprises an electric permanent magnetic chuck, 2 parts of a limiting column, 3 parts of a ram, 4 parts of a horizontal workbench, 5 parts of a linear driving unit, 6 parts of a ball nut, 7 parts of a nut support, 8 parts of a motor, 9 parts of a left-right rotation integrated ball screw, 10 parts of a linear guide rail, 11 parts of a coupler, 12 parts of a base and 13 parts of a screw support.

Detailed Description

It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the invention. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments in accordance with the invention. As used herein, the singular forms "a", "an", and/or "the" are intended to include the plural forms as well, unless the invention expressly state otherwise, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof;

for convenience of description, the words "upper", "lower", "left" and "right" in the present invention, if any, merely indicate that the directions of movement of the device or element are consistent with those of the drawings, and do not limit the structure, but merely facilitate the description of the invention and simplify the description, rather than indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the invention.

Term interpretation section: the terms "mounted," "connected," "fixed," and the like in the present invention are to be understood in a broad sense, for example, they may be fixedly connected, detachably connected, or integrated; the two components can be connected mechanically or electrically, directly or indirectly through an intermediate medium, or connected internally or in an interaction relationship, and specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

Just as the background art introduces, there is the problem that the work piece clamping is wasted time and energy among the prior art, in order to solve above-mentioned technical problem, the utility model provides a work piece positioner.

In a typical embodiment of the present invention, referring to fig. 1-3, a workpiece positioning device includes a positioning mechanism for positioning a workpiece, the positioning mechanism includes at least two convex portions, the convex portions can extend into the opening of the workpiece, at least one of the convex portions is movable relative to the other convex portion, and the workpiece is positioned by two convex portions when the convex portions are moved to the opening edge.

The opening can be an inner bore of a workpiece, such as an inner bore of a ring-shaped workpiece.

The positioning mechanism can be directly fixed on the numerical control equipment workbench, in some specific examples, the positioning mechanism can comprise a base, the convex part can move relative to the base, and the base can be fixedly arranged on a horizontal workbench 4 of the numerical control equipment; it should be noted that the base may be fixed to a horizontal table of the numerical control device by bolts or other means.

In other examples, the electric permanent magnetic chuck is arranged on the periphery of the positioning mechanism and used for supporting and adsorbing the workpiece, and the adsorption of the electric permanent magnetic chuck on the workpiece is equivalent to clamping the workpiece, so that the workpiece is prevented from moving.

Specifically, a plurality of electric permanent magnetic chucks 1 are arranged, the electric permanent magnetic chucks 1 are also arranged on a horizontal workbench 4 of the numerical control equipment, and after the electric permanent magnetic chucks are aligned and arranged, the electric permanent magnetic chucks are used for quickly adsorbing and clamping workpieces.

In this embodiment, the base 12 is fixedly installed with the linear guide 10, the two linear guide are arranged in total and are parallel to each other, the two linear guide are arranged on two sides of the linear driving unit, and the pair of rams 3 are installed through the linear guide.

In some examples, the linear driving unit 5 includes a left-right rotation ball screw 9, the left-right rotation ball screw is connected to the motor 8 or other power source, and the motor 8 is connected to the left-right rotation ball screw through a coupling 11 to realize driving, so that the linear driving unit drives the two rams on the two sides to move simultaneously.

Of course, it is easily understood that the linear driving unit can be replaced by two linear driving members capable of moving in opposite directions, such as electric cylinders, the telescopic ends of the electric cylinders are respectively connected with the linear guide rails, and the two linear driving members move synchronously to push the rams on the two sides to move in opposite directions simultaneously.

In other examples, the linear driving unit can be replaced by three linear driving parts, the included angle between two adjacent driving parts of the three linear driving parts is 120 degrees, each linear driving part is provided with a convex part, and the three linear driving parts move together to be used for positioning the workpiece.

The longitudinal section of the ram 3 is U-shaped, the ram is provided with at least one convex part, the convex part is a limiting column 2, and the limiting column can be installed through threads; the number of the limiting columns is preferably, two limiting columns are arranged on each ram, and the limiting columns are cylindrical and are convenient to match with holes formed in workpieces.

It should be noted that the surface of each ram is provided with a plurality of limiting column mounting holes for mounting limiting columns, and the positions of the limiting columns on the ram can be freely selected according to the positioning requirements of the ring-shaped parts.

Further, ball is installed in base 12 through the screw support 13 of both sides, and integrative ball is prior art revolves about, and it includes integrative ball 9 revolves about, and two ball nuts 6 are the ball nut of levogyration and the cooperation of dextrorotation ball nut all with ball to be fixed in the ram lower surface through nut support 7 respectively, so when driving linear drive unit, the inward or outward motion of the fast same speed simultaneously of left ram and right ram can make the spacing post of installation on the ram with the hole contact of work piece, realize that the work piece is from the centering.

Furthermore, the length direction of the ball screw is parallel to the length direction of a sliding groove formed in the horizontal workbench of the numerical control equipment, so that the electric permanent magnetic chuck can be conveniently installed.

Horizontal table upper surface mounting has 4 electric permanent magnetism sucking discs 1, divide two rows to be listed as and set up electric permanent magnetism sucking discs, and linear drive unit is located four electric permanent magnetism sucking discs's centre, and all have the distance of settlement between the electric permanent magnetism sucking discs of base and both sides, the upper surface through electric permanent magnetism sucking disc supports the work piece, the work piece bears suction directly under only, radial no deformation is fit for the circle class work piece that has the hole, suction is invariable, the work piece passes through the two-way movement positioning mechanism and accomplishes the alignment back, the work piece can directly adsorb on electric permanent magnetism sucking disc, need not use any clamp plate, supplementary anchor clamps such as bolt.

The electric permanent magnetic chuck and the linear driving unit are both connected with a controller, and the controller can be a PLC (programmable logic controller) or other types of controllers. Correspondingly, the electric permanent magnet sucker is an electric permanent magnet and is provided with a PLC interface, so that the electric permanent magnet sucker can be connected with a numerical control system to realize automatic control, the working efficiency is high, and the operation is simple, rapid and convenient.

The workpiece positioning device can be applied to equipment for processing annular workpieces with inner holes, such as gantry machining centers (three-shaft and four-shaft) carving machines (three-shaft and four-shaft), and can also be applied to small vertical machining centers.

A method of using a workpiece positioning apparatus, comprising:

s1: the controller controls the demagnetization and reset of the electric permanent magnetic chuck.

S2: the electric permanent magnetic chuck is in a demagnetizing state.

S3: the workpiece is naturally placed on a ram of the bidirectional movement positioning mechanism, and an inner hole of the workpiece is close to the limiting column as much as possible.

S4: the motor is started to drive the left-right rotating integrated ball screw, the rotating motion is changed into linear motion, and the left ram and the right ram are linked to feed simultaneously.

S5: the limiting column arranged on the ram is in contact with an inner hole of a workpiece, the workpiece is self-centered by the friction rolling of the limiting column and the inner hole of the workpiece, the self-centering action is completed, and the workpiece is aligned.

S6: the controller controls the permanent magnetic chuck to reset with magnetism.

S7: the electric permanent magnetic chuck is in a magnetized state and adsorbs and clamps the workpiece.

And S8, starting the machining program by the machine tool to enter a machining state, and starting to cut the workpiece.

S9: and finishing the processing of the workpiece.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The workpiece positioning device is characterized by comprising a positioning mechanism for positioning a workpiece, wherein the positioning mechanism comprises at least two convex parts, the convex parts can extend into an opening of the workpiece, at least one of the convex parts can move relative to the other convex part, and when the convex parts move to the edge of the opening, the workpiece is positioned through the two convex parts.

2. A workpiece positioning device as defined in claim 1, characterized in that the positioning means comprise two projections, both projections being fixed to the linear drive unit, the projections being moved by the linear drive unit.

3. The workpiece positioning device of claim 2, wherein the two convex portions are respectively mounted on corresponding rams, the two rams are respectively connected with the linear driving unit, and the linear driving unit drives the two rams to move simultaneously and reversely;

and the ram is matched with the linear guide rail, and the linear guide rail is fixed on the base or the numerical control equipment workbench.

4. A workpiece positioning device as claimed in claim 1 or 2, characterised in that at least one side of the projection is a curved surface.

5. A workpiece positioning device as claimed in claim 3, characterised in that the projection is threadedly connected to the ram.

6. A workpiece positioning device as defined in claim 3 wherein each ram is provided with two of said projections; and the two convex parts arranged on each ram are arranged at a set distance.

7. A workpiece positioning device as defined in claim 3 wherein the linear drive unit comprises a left and right handed ball screw mounted through a screw mount, the ball screw having a ball nut secured to the ram.

8. A workpiece positioning device as claimed in claim 1, 2 or 3, characterised in that the projection is a limit post.

9. The workpiece positioning device of claim 3, further comprising electric permanent magnetic chucks, wherein the electric permanent magnetic chucks are fixedly arranged on two sides of the positioning mechanism, and the electric permanent magnetic chucks are arranged on the base or the numerical control equipment workbench.

10. A workpiece positioning device as claimed in claim 9, wherein a plurality of the electro-permanent magnetic chucks are provided, and a plurality of the electro-permanent magnetic chucks are provided on both sides of the positioning mechanism.