CN211029037U

CN211029037U - Workpiece positioning device

Info

Publication number: CN211029037U
Application number: CN201921927123.4U
Authority: CN
Inventors: 邱海涛; 曹华平; 文敬春; 李建琳; 陈大为; 胡健生
Original assignee: Guangdong Yiheng Industrial Equipment Co ltd
Current assignee: Guangdong Yiheng Industrial Equipment Co ltd
Priority date: 2019-11-08
Filing date: 2019-11-08
Publication date: 2020-07-17
Anticipated expiration: 2029-11-08

Abstract

The utility model discloses a workpiece positioning device, which comprises a positioning ring and a plurality of limiting parts, wherein the limiting parts are distributed on the positioning ring in an equidistance and surrounding way, and each limiting part can be radially adjusted along the positioning ring; the end of the limiting part is provided with a butt-joint rod which is parallel to the axis of the positioning ring. The workpiece positioning device can be matched with workpieces with different outer diameter sizes and various shapes for positioning, a positioning die does not need to be replaced, and the whole positioning device forms a modular structure and is convenient to flexibly assemble, disassemble and adjust in modern production.

Description

Workpiece positioning device

Technical Field

The utility model relates to a mounting fixture equipment specifically is work piece positioner.

Background

In various current machining, workpiece positioning is an indispensable processing step, non-rigid workpieces with large body length such as columns, tubes, inner containers and the like cannot be fixed by applying a conventional strong and hard clamping structure, for example, the fixture of a lathe is only suitable for fastening a rigid workpiece and cutting the rigid workpiece and a prop by rotating, and the internal and external stresses borne by the workpiece are very large during the process, so that the non-rigid workpiece can not be fastened in the clamping manner, workpieces such as pipe-shaped parts, liner parts and the like are generally positioned by adopting a supporting type abutting structure from the peripheral outer wall in the processing process, most of the traditional positioning structures adopt a specific clamping mold to be matched and abutted against a workpiece, the matching range of the clamping mold corresponding to the shape or size of the workpiece is quite limited, moreover, the structure of the device cannot constitute a modular or partially integrated mechanism, and the device should be improved in processing equipment to meet the increasing production requirements.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects of the prior art, the utility model provides a can be modular structure's work piece positioner, its location adaptation wide range.

The utility model provides a technical scheme that its technical problem adopted is:

The workpiece positioning device comprises a positioning ring and limiting pieces, wherein the limiting pieces are equidistantly and circumferentially distributed on the positioning ring, and each limiting piece can be radially adjusted along the positioning ring; the end of the limiting part is provided with a butt-joint rod which is parallel to the axis of the positioning ring.

The locating ring is provided with an even number of locating parts which are distributed in bilateral symmetry, and every two locating parts which are opposite along the center are all located on the same radial straight line and have the same distance with the center.

The positioning device further comprises a driving ring which is rotatably arranged on the positioning ring, the driving ring is in spiral transmission connection with the limiting piece, the limiting piece is slidably arranged on a sliding groove of the positioning ring, and the cross section of the limiting piece is in an I shape.

The positioning device further comprises a driver, the outer wall of the driver is fixedly connected with the positioning ring, the driving ring is a toothed ring, and the driver correspondingly extends out of a driving rotating shaft with a gear and is in threaded connection with the side wall of the driving ring.

The butt-joint rod at the tail end of each limiting part is a round rod, and the outward end of each butt-joint rod extends outwards along the radial direction in an inclined mode.

The limiting part is provided with a rod seat used for installing a rod body at the tail end, and the rod seat is provided with a sunken port matched with the fixed abutting rod.

The recess mouth of rod seat is two cascaded notch structures, except connecting two positioner's limit point, and the connecting rod contacts with the workpiece surface as the extension of butt pole butt position, increases the stability and the fastness that the work piece presss from both sides and connects.

The utility model has the advantages that: the workpiece positioning device can be matched with workpieces with different outer diameter sizes and various shapes for positioning, a positioning die does not need to be replaced, and the whole positioning device forms a modular structure and is convenient to flexibly assemble, disassemble and adjust in modern production.

Drawings

The present invention will be further explained with reference to the drawings and examples.

Fig. 1 is a schematic view of an installation structure of an embodiment of the present invention;

Fig. 2 is a schematic structural view of an embodiment of the middle position limiting member of the present invention, in which the connecting rod and the abutting rod are installed on the rod seat.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.

Referring to fig. 1, the workpiece positioning device of the present invention includes a positioning ring 11 and limiting members 12, wherein the positioning ring 11 is vertically installed, a plurality of limiting members 12 are equidistantly and circumferentially distributed on the positioning ring 11, and each limiting member 12 can be synchronously adjusted radially along the positioning ring 11; one end of the limiting part 12 opposite to the center of the positioning ring 11 is a limiting point for abutting against a workpiece, the positioning ring 11 can be of an annular structure, the central part of the annular structure is hollow, the workpiece and other mechanisms can penetrate through the annular structure, the annular structure can be suitable for hollow tube type, barrel type workpieces or solid workpieces, the limiting part 12 can be clamped by a hydraulic rod or a pneumatic rod to realize telescopic advance and retreat, the limiting part 12 can also be driven by a motor through a gear rack structure or a gear screw structure, and the positioning device adjusts the outer diameter sizes of different corresponding workpieces through the radial movement of the limiting part 12 on the positioning ring 11; the end of the limiting member 12 is provided with an abutting rod 121, the abutting rod 121 is parallel to the axis of the positioning ring 11, the abutting rod 121 uses a rod body as an abutting part, that is, the limiting point of the limiting member 12 is realized by the abutting part of the abutting rod 121 and the workpiece, when the workpiece is positioned, the workpiece penetrates into the positioning ring 11 from the outer side of the positioning device along the axial direction to be positioned, the abutting rod 121 is used as a supporting and retaining component, not only can be in limited contact with the outer wall of the workpiece, but also can be in corresponding different shapes through proper extension, distribution and other modes, the limiting member 12 can be suitable for supporting the workpiece of which the outer wall is a multi-plane structure or a single curved surface, such as a long workpiece with a triangular, rectangular, polygonal, circular and other cross-sectional shapes, the abutting rod 121 at the end of the limiting member 12 can be; the positioning device is based on a positioning ring 11 as a whole structure, to which the various components are assembled as a modular assembly.

Preferably, the positioning ring 11 has an even number of the limiting members 12 symmetrically distributed left and right, and each two of the limiting members 12 opposite to each other along the center are located on the same radial straight line and have the same distance with the center, so that the positioning ring can correspondingly limit workpieces with various symmetrical cross sections, such as circles, squares, regular polygons and the like, concentrically with the center of the positioning ring 11.

Referring to fig. 1, the positioning device further includes a driving ring 13, the driving ring 13 is concentrically and rotatably mounted on the positioning ring 11, the driving ring 13 is in screw transmission connection with the limiting member 12, and the limiting member 12 is in sliding connection with the positioning ring 11, the driving ring 13 can be in screw transmission through the cooperation of a spiral groove or a curved groove and the like with a latch, a pin, a guide post, or the like of the limiting member 12, the positioning ring 11 is provided with a radially extending sliding groove matched with the sliding connection limiting member 12, the limiting member 12 is slidably mounted on the sliding groove of the positioning ring 11, and the cross section of the limiting member 12 is in an "i" shape, so that the; the driving ring 13 is movably sleeved on the annular wall protruding in the axial direction of the positioning ring 11, and can also be slidably embedded in the inner side of the positioning ring 11, the driving ring 13 can be driven to rotate by a motor or a transmission mechanism, and then the rotation of the driving ring is converted into the linear motion of the limiting piece 12, the mechanism of the mechanism is the same as that of a common three-jaw chuck, so that the connection example of the driving ring 13 and the limiting piece 12 is omitted in the drawing, the limiting piece 12 is driven by the rotation of the driving ring 13, that is, all the limiting pieces 12 are driven simultaneously, and the driving ring.

Referring to fig. 1, the positioning device further includes a driver 14, an outer wall of the driver 14 is fastened to the positioning ring 11, the driving ring 13 is a toothed ring, the driver 14 is correspondingly connected to a driving shaft with a gear and is in threaded connection with a side wall of the driving ring 13, the driver 14 may be a rotating shaft of a servo motor or a motor directly connected to the driving shaft or directly connected to the driving shaft through a reduction box and then passes through the gear driving ring 13, as shown in the figure, an outer ring surface is preferably designed on a tooth surface of the driving ring 13, and the driver 14 is driven by meshing from the outer side of the driving ring 13, the driving efficiency is high, the structure is simple, in addition, a pulley can be used for driving, the driver 14 is fastened to the positioning ring 11 through.

Referring to fig. 1, one of the abutment rods 121 is provided at the end of each limiting member 12, the abutment rod 121 is a circular rod, and one end of the abutment rod 121, which is outward, extends radially and obliquely outward, so that the outward flared bell mouth formed by the outward extending of each abutment rod 121 is guided into the workpiece when the workpiece enters along the central axis of the positioning device.

Referring to fig. 1 and 2, a rod seat 122 for installing a rod body is disposed at the end of the limiting member 12, one side of the rod seat 122 is connected to the limiting member 12, a recessed opening for matching and fixing the abutting rod 121 is disposed at the lower end of the rod seat 122, the rod seat 122 and the limiting member 12 can be integrally formed or connected to each other, the rod seat 122 in the connection mode can be replaced as required to adapt to abutting rods 122 with different shapes and outer diameters, and the rod seat 122 can be connected to the limiting member 12 through a bolt.

Referring to fig. 2, the recess of the rod seat 122 is a two-step recess structure, the recess of the rod seat 122 can be installed against the rod 121 and a connecting rod end to end, and preferably, the abutting rod 121 and one side wall surface of the end of the connecting rod facing to the center of the positioning device are flush, the connecting rod can be used for correspondingly connecting each limiting member 12 of the two positioning devices, the limiting workpiece can be extended and abutted by two or even a plurality of positioning devices and the connecting rod, so that the external diameter of the abutting rod 121 is preferably smaller than that of the connecting rod 31, the recessed opening of the rod seat 122 is segmented into a section with one side higher in position and smaller in internal diameter, the other side lower in position and larger in internal diameter, the abutting rod 121 and the connecting rod are respectively assembled on the two sides in a matching way, and two poles are leveled on one side surface of butt joint, except the limit point of connecting two positioner, the connecting rod contacts with the workpiece surface as the extension of butt joint pole 121 butt joint position, increases the stability and the fastness of work piece clamping.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.

It should be noted that the terms of left, right, upper and lower directions in the embodiments of the present invention are only relative concepts or are referred to the normal use state of the product, and should not be considered as limiting.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

The above description is only a preferred embodiment of the present invention, but the present invention is not limited to the above embodiments, and the technical effects of the present invention should fall within the protection scope of the present invention as long as the technical effects are achieved by any of the same or similar means.

Claims

1. Work piece positioner, its characterized in that: the positioning device comprises a positioning ring and a plurality of limiting pieces, wherein the limiting pieces are equidistantly and circumferentially distributed on the positioning ring, and each limiting piece can be radially adjusted along the positioning ring; the end of the limiting part is provided with a butt-joint rod which is parallel to the axis of the positioning ring.

2. The workpiece positioning device of claim 1, wherein: the locating ring is provided with an even number of locating parts which are distributed in bilateral symmetry, and every two locating parts which are opposite along the center are all located on the same radial straight line and have the same distance with the center.

3. The workpiece positioning device according to claim 1 or 2, characterized in that: the positioning device further comprises a driving ring which is rotatably arranged on the positioning ring, the driving ring is in spiral transmission connection with the limiting piece, the limiting piece is slidably arranged on a sliding groove of the positioning ring, and the cross section of the limiting piece is in an I shape.

4. A workpiece positioning device as defined in claim 3, characterized in that: the positioning device further comprises a driver, the outer wall of the driver is fixedly connected with the positioning ring, the driving ring is a toothed ring, and the driver correspondingly extends out of a driving rotating shaft with a gear and is in threaded connection with the side wall of the driving ring.

5. The workpiece positioning device according to claim 1 or 2, characterized in that: the butt-joint rod at the tail end of each limiting part is a round rod, and the outward end of each butt-joint rod extends outwards along the radial direction in an inclined mode.

6. The workpiece positioning device according to claim 1 or 2, characterized in that: the limiting part is provided with a rod seat used for installing a rod body at the tail end, and the rod seat is provided with a sunken port matched with the fixed abutting rod.

7. The workpiece positioning device of claim 6, wherein: the recess mouth of rod seat is two cascaded notch structures, except connecting two positioner's limit point, and the connecting rod contacts with the workpiece surface as the extension of butt pole butt position, increases the stability and the fastness that the work piece presss from both sides and connects.