CN210360982U

CN210360982U - Workpiece positioning device

Info

Publication number: CN210360982U
Application number: CN201920686970.XU
Authority: CN
Inventors: 陈军
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-05-14
Filing date: 2019-05-14
Publication date: 2020-04-21
Anticipated expiration: 2029-05-14

Abstract

The utility model belongs to the technical field of assembly quality, especially, relate to a work piece positioner, include: guide arm, locating component and pressing component. One end of the guide rod inserted into the hole of the workpiece is provided with a limiting part. The positioning assembly comprises at least one group of adjusting parts, and each group of adjusting parts comprises a wedge block and a first moving block; the wedge block is provided with a first inclined plane; one end of the first moving block is provided with a second inclined plane which is abutted with the first inclined plane and is abutted with the limiting part. The pressing component is located at one end, far away from the limiting portion, of the guide rod and abuts against one end, far away from the first moving block, of the wedge block. The utility model discloses an among the work piece positioner, because the second inclined plane of first movable block can be extruded to the first inclined plane of voussoir for the relative guide arm of first movable block removes to the inside direction in the hole that is close to the work piece, thereby makes the inside wall in first movable block with the hole of work piece compress tightly, avoids the work piece to produce in the course of working to rock, thereby improves the machining precision of work piece when adding man-hour.

Description

Workpiece positioning device

Technical Field

The utility model belongs to the technical field of assembly quality, especially, relate to a work piece positioner.

Background

During the process of processing or maintaining the workpiece, the positioning device is generally required to position the workpiece for processing or maintaining. When a workpiece with a hole is positioned, a traditional positioning device is inserted into the hole of the workpiece through a pin shaft or a cylinder so as to position the workpiece. Because there is often certain clearance between the hole of traditional round pin axle or cylinder and work piece, when processing equipment was processed the work piece, the work piece often can rock because the clearance of reserving between the hole of round pin axle or cylinder and work piece, leads to influencing machining precision greatly.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a work piece positioner, when aiming at solving prior art to the hole location of work piece, can lead to the work piece to rock because of there being the clearance to influence its machining precision's technical problem.

An embodiment of the utility model provides a pair of workpiece positioning device, include: guide arm, locating component and pressing component. The guide rod is used for being inserted into a hole of a workpiece, and one end, inserted into the hole of the workpiece, of the guide rod is provided with a limiting part. The positioning assembly comprises at least one group of adjusting parts, and each group of adjusting parts comprises a wedge block and a first moving block; the wedge block is sleeved on the guide rod in a sliding mode, and a first inclined plane is arranged on one side, away from the guide rod, of the wedge block; the first moving block is arranged at one end, close to the limiting part, of the wedge block, a second inclined surface abutted against the first inclined surface is arranged at one end of the first moving block, and the other end, close to the limiting part, of the first moving block is abutted against the limiting part. The pressing component is located at one end, far away from the limiting portion, of the guide rod, abuts against one end, far away from the first moving block, of the wedge block, and is used for pushing the wedge block to extrude the first moving block, and therefore the first moving blocks move towards the inner direction, close to the hole of the workpiece, relative to the guide rod.

Optionally, the positioning assembly further includes a second moving block disposed along the axial direction of the guide rod, the second moving block is located between the pressing assembly and the wedge, a third inclined surface is disposed on one side of the second moving block facing the guide rod, and the third inclined surface is located at one end close to the wedge; the wedge block adjacent to the second moving block is provided with two first inclined planes, the two first inclined planes are respectively positioned on two opposite sides of the wedge block, one first inclined plane is abutted with the third inclined plane, and the other first inclined plane is abutted with the second inclined plane.

Optionally, the second moving block is a circular ring with a C-shaped cross section.

Optionally, a fourth inclined surface is arranged on one side of the limiting part, which is away from the guide rod, and the fourth inclined surface is located at one end close to the first moving block; the first moving block adjacent to the limiting part is provided with two second inclined planes which are respectively positioned at two opposite sides of the first moving block, wherein one second inclined plane is abutted with the fourth inclined plane, and the other second inclined plane is abutted with the first inclined plane.

Optionally, the wedge block is provided with two first inclined surfaces, and the two first inclined surfaces are respectively located on two opposite sides of the wedge block; the first moving block is provided with two second inclined planes which are respectively positioned at two opposite sides of the first moving block; the second inclined surface of each adjusting piece is abutted with the first inclined surface of another adjacent adjusting piece.

Optionally, the first moving block is a circular ring with a C-shaped cross section.

Optionally, the pressing component comprises an eccentric cam, the eccentric cam is provided with a shaft hole and an empty avoiding groove, the eccentric cam is abutted to the wedge block, a rotating shaft is installed in the shaft hole in a rotating mode, the rotating shaft is connected with the guide rod, the axis of the rotating shaft is intersected with the axis of the guide rod, the empty avoiding groove is connected with the shaft hole, and the empty avoiding groove is used for allowing the guide rod to move when the rotating shaft rotates.

Optionally, the pressing assembly further comprises a handle connected with the eccentric cam.

Optionally, the spindle is threadedly coupled to the guide rod.

Optionally, a shim is provided between the eccentric cam and the wedge.

The embodiment of the utility model provides an among the work piece positioner above-mentioned one or more technical scheme have one of following technological effect at least: the utility model discloses a work piece positioner, in operation, arrange the guide arm in the hole of work piece, promote the regulating part through pressing the subassembly, because the regulating part includes voussoir and first movable block, and first movable block butt voussoir, the voussoir can be followed the guide arm after receiving the power of pressing the subassembly and removed like this, and promote the second inclined plane of first movable block through the first inclined plane of voussoir, when being blockked unable the removal by spacing portion of first movable block, the second inclined plane of first movable block can be extruded to the first inclined plane of voussoir, make the relative guide arm of first movable block remove to the inside direction in the hole that is close to the work piece, thereby make the inside wall in first movable block with the hole of work piece compress tightly, avoid the work piece to produce in the course of working and rock, thereby improve the machining precision of work.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments or the prior art descriptions will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive labor.

Fig. 1 is a schematic structural diagram of a workpiece positioning device according to an embodiment of the present invention.

Fig. 2 is an exploded schematic view of a workpiece positioning device according to an embodiment of the present invention.

Fig. 3 is a top view of a workpiece positioning device according to an embodiment of the present invention.

Fig. 4 is a sectional view taken along line a-a in fig. 3.

Fig. 5 is an enlarged view of a portion B in fig. 4.

Wherein, in the figures, the respective reference numerals:

10-guide rod 11-limiting part 111-fourth inclined plane

20-positioning assembly 21-adjusting piece 211-wedge block

2111 first inclined plane 212 first moving block 2121 second inclined plane

22-second moving block 221-third inclined plane 30-pressing component

31-eccentric cam 311-shaft hole 312-clearance groove

32-rotating shaft 321-screw hole 322-screw

33-handle 34-pad.

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 by referring to the drawings are exemplary and intended to explain the embodiments of the present invention and are not to be construed as limiting the present invention.

In the description of the embodiments of the present invention, it should be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings, which is only for convenience in describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the device or element so indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the embodiments of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the embodiments of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly, e.g., as fixed or detachable connections or as an integral part; 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 embodiments of the present invention can be understood by those skilled in the art according to specific situations.

In an embodiment of the present invention, as shown in fig. 1 to 5, there is provided a workpiece positioning device, including: guide bar 10, positioning assembly 20, and pressing assembly 30. The guide rod 10 is used for being inserted into a hole of a workpiece, and one end, inserted into the hole of the workpiece, of the guide rod 10 is provided with a limiting part 11. The positioning assembly 20 comprises at least one set of adjustment members 21, and in the present embodiment, the positioning assembly 20 comprises three sets of adjustment members 21. Each set of said adjusting members 21 comprises a wedge 211 and a first moving block 212; the wedge 211 is slidably sleeved on the guide rod 10, and a first inclined surface 2111 is arranged on one side of the wedge 211, which is far away from the guide rod 10; the first moving block 212 is disposed at one end of the wedge 211 close to the stopper portion 11, one end of the first moving block 212 is disposed with a second inclined surface 2121 abutting against the first inclined surface 2111, and the other end of the first moving block 212 close to the stopper portion 11 abuts against the stopper portion 11. The pressing member 30 is located at one end of the guide rod 10 far from the limiting portion 11, and the pressing member 30 abuts against one end of the wedge 211 far from the first moving block 212 and is used for pushing the wedge 211 to press the first moving block 212, so that each first moving block 212 moves towards the inner direction of the hole close to the workpiece relative to the guide rod 10.

When the workpiece positioning device provided by the embodiment of the utility model is used, the guide rod 10 is arranged in the hole of the workpiece, the adjusting piece 21 is pushed by the pressing component 30, since the adjusting member 21 includes the wedge 211 and the first moving block 212, and the first moving block 212 abuts against the wedge 211, the wedge 211 is moved along the guide bar 10 by the force of the pressing assembly 30, and pushes second inclined surface 2121 of first moving block 212 by first inclined surface 2111 of wedge 211, when the first moving block 212 is stopped by the stopper 11 and cannot move, the first inclined surface 2111 of the wedge 211 presses the second inclined surface 2121 of the first moving block 212, so that the first moving block 212 moves toward the inner direction of the hole near the workpiece with respect to the guide 10, therefore, the inner side wall of the hole of the workpiece is compressed by the first moving block 212, the workpiece is prevented from shaking in the machining process, and the machining precision of the workpiece during machining is improved.

In another embodiment of the present invention, as shown in fig. 2 and 5, the positioning assembly 20 of the workpiece positioning device further includes a second moving block 22 disposed along the axial direction of the guide rod 10, the second moving block 22 is located between the pressing assembly 30 and the wedge 211, one side of the second moving block 22 facing the guide rod 10 is provided with a third inclined surface 221, and the third inclined surface 221 is located at one end close to the wedge 211; the wedge 211 adjacent to the second moving block 22 is provided with two first inclined surfaces 2111, and the two first inclined surfaces 2111 are respectively located at two opposite sides of the wedge 211, wherein one first inclined surface 2111 abuts against the third inclined surface 221, and the other first inclined surface 2111 abuts against the second inclined surface 2121. In this embodiment, the pressing assembly 30 pushes the second moving block 22 to move along the guide rod 10, and the third inclined surface 221 of the second moving block 22 is extruded by the first inclined surface 2111 of the wedge 211, so that the second moving block 22 moves towards the inner direction of the hole close to the workpiece relative to the guide rod 10, and the second moving block 22 compresses the inner side wall of the hole of the workpiece, thereby further preventing the workpiece from shaking in the machining process, and improving the machining precision of the workpiece during machining.

In another embodiment of the present invention, as shown in fig. 1 and 2, the second movable block 22 of the workpiece positioning device is a circular ring with a C-shaped cross section. Specifically, the C-shaped ring is convenient to be sleeved into the guide rod 10, and when the C-shaped ring moves towards the inner direction of the hole close to the workpiece relative to the guide rod 10, the radius of the C-shaped ring can be increased, so that the second moving block 22 can be attached to the hole of the workpiece more tightly. In this embodiment, the second moving block 22 may be a metal ring, and the metal ring has good elasticity, and when the pressing component 30 does not provide a force for moving the wedge 211 along the guide 10, the wedge 211 can be pressed to move along the guide 10, so that the second moving block 22 moves towards the inner direction of the hole far away from the workpiece relative to the guide 10, and the purpose of facilitating the taking out of the workpiece positioning device is achieved. In this embodiment, the second moving block 22 may be a plastic ring, and the plastic ring has good wear resistance, so as to increase the number of times that the second moving block 22 compresses the inner sidewall of the hole of the workpiece, thereby achieving the purpose of increasing the service life of the second moving block 22.

In another embodiment of the present invention, as shown in fig. 2 and 5, a fourth inclined plane 111 is disposed on a side of the limiting portion 11 away from the guide rod 10, and the fourth inclined plane 111 is located at an end close to the first moving block 212; the first moving block 212 adjacent to the limiting portion 11 is provided with two second inclined surfaces 2121, the two second inclined surfaces 2121 are respectively located at two opposite sides of the first moving block 212, one of the second inclined surfaces 2121 abuts against the fourth inclined surface 111, and the other second inclined surface 2121 abuts against the first inclined surface 2111. In this embodiment, the first inclined surface 2111 and the fourth inclined surface 111 can respectively extrude two sides of the first moving block 212, so that the stress of the first moving block 212 when contacting with the inner side wall of the hole of the workpiece can be increased, and the friction between the first adjusting part and the inner side wall of the hole of the workpiece is ensured, thereby preventing the workpiece from shaking in the machining process, and further improving the machining precision of the workpiece during machining.

In another embodiment of the present invention, as shown in fig. 1, fig. 2, fig. 4 and fig. 5, an end of the limiting portion 11 of the workpiece positioning device away from the adjusting member 21 is an arc-shaped surface. In this embodiment, the arc-shaped surface can better guide the guide rod 10 to be inserted into the hole of the workpiece, and can also prevent the limiting part 11 from scratching the hole of the workpiece.

In another embodiment of the present invention, as shown in fig. 2 and 5, the wedge 211 of the workpiece positioning device is provided with two first inclined surfaces 2111, and the two first inclined surfaces 2111 are respectively located at two opposite sides of the wedge 211; the first moving block 212 is provided with two second inclined surfaces 2121, and the two second inclined surfaces 2121 are respectively located at two opposite sides of the first moving block 212; the second inclined surface 2121 of each of the adjusting members 21 abuts against the first inclined surface 2111 of another adjacent one of the adjusting members 21. In this embodiment, the two second inclined surfaces 2121 of each first moving block 212 may be supported and pressed by the first inclined surfaces 2111 of the adjacent wedges 211, so that the stress of the inner side walls of the holes of the first moving blocks 212 and the workpiece during contact can be increased, and thus the friction force between the first moving blocks 212 and the inner side walls of the holes of the workpiece is ensured, thereby preventing the workpiece from shaking during the machining process, and further improving the machining accuracy of the workpiece during machining.

In another embodiment of the present invention, as shown in fig. 1 and 2, the first moving block 212 of the workpiece positioning device is a circular ring with a C-shaped cross section. Specifically, the C-shaped ring is convenient to be sleeved into the guide rod 10, and when the C-shaped ring moves towards the inner direction of the hole close to the workpiece relative to the guide rod 10, the radius of the C-shaped ring can be increased, so that the first moving block 212 can be attached to the hole of the workpiece more tightly. In this embodiment, the first moving block 212 may be a metal ring, and the metal ring has good elasticity, and when the pressing assembly 30 does not provide a force for moving the wedge 211 along the guide rod 10, the wedge 211 can be pressed to move along the guide rod 10, so that the first moving block 212 moves towards the inner direction of the hole far away from the workpiece relative to the guide rod 10, and the purpose of facilitating the taking out of the workpiece positioning device is achieved. In this embodiment, the first moving block 212 may be a plastic ring, and the plastic ring has good wear resistance, so as to increase the number of times that the first moving block 212 compresses the inner sidewall of the hole of the workpiece, thereby increasing the service life of the first moving block 212.

In another embodiment of the present invention, as shown in fig. 1 and 2, the pressing component 30 of the workpiece positioning device includes an eccentric cam 31, the eccentric cam 31 is a structure that one side rotates a long diameter and the other side rotates a short diameter, the eccentric cam 31 is provided with a shaft hole 311 and a clearance groove 312, and the eccentric cam 31 is abutted to the wedge 211, a rotating shaft 32 is installed in the shaft hole 311 for rotation, the rotating shaft 32 is connected to the guide rod 10, and the axis of the rotating shaft 32 is intersected with the axis of the guide rod 10, the clearance groove 312 is connected to the shaft hole 311, the clearance groove 312 is used for the eccentric cam 31 to rotate the guide rod 10 for supply. When the eccentric cam 31 is rotated to the side of the rotation diameter by the rotation shaft 32, the eccentric cam 31 pushes the wedge 211 to move along the guide 10 toward the stopper 11, thereby pressing the first moving block 212 to move toward the inside of the hole close to the workpiece with respect to the guide 10; when the eccentric cam 31 is rotated to the side where the rotation diameter is short by the rotation shaft 32, the first moving block 212 loses the pressing force of the wedge 211, and thus shrinks toward the guide bar 10 with respect to the inner side wall of the hole of the workpiece, thereby pushing the wedge 211 to move along the guide bar 10 toward the pressing unit 30. In this embodiment, the axis of the rotating shaft 32 intersects with the axis of the guide rod 10, and when the eccentric cam 31 provides a force to press the positioning assembly 20 through the rotation of the rotating shaft 32, the reaction force of the positioning assembly 20 against the pressure provided by the eccentric cam 31 is transmitted to the rotating shaft 32, so as to prevent the positioning assembly 20 from pushing back the eccentric cam 31, and the eccentric cam 31 rotates from the side with the longer rotation diameter to the side with the shorter rotation diameter, thereby preventing the positioning assembly 20 from pushing back when pressing the positioning assembly 20.

In another embodiment of the present invention, as shown in fig. 1 to 3, the pressing component 30 of the workpiece positioning device further includes a handle 33, and the handle 33 is connected to the eccentric cam 31. In the embodiment, the handle 33 facilitates the eccentric cam 31 to rotate, and facilitates the operator to adjust the rotation of the eccentric cam 31.

In another embodiment of the present invention, as shown in fig. 2 and 4, the rotating shaft 32 of the workpiece positioning device is screwed with the guide rod 10. In this embodiment, the threaded connection may facilitate adjusting the shaft 32 closer to or farther from the positioning assembly 20, ensuring that the eccentric cam 31 can abut against the wedge 211 of the positioning assembly 20.

In another embodiment of the present invention, as shown in fig. 2 and 4, the rotating shaft 32 of the workpiece positioning device is provided with a screw hole 321 along the axial direction thereof, and a screw 322 passes through the screw hole 321 and abuts against the guide rod 10, so as to prevent the rotating shaft 32 from rotating or deviating when being in threaded connection with the guide rod 10, so as to ensure the relative position relationship between the rotating shaft 32 and the guide rod 10, and thus the pressing assembly 30 is stably connected with the guide rod 10.

In another embodiment of the present invention, as shown in fig. 1 to 4, a spacer 34 is disposed between the eccentric cam 31 and the wedge 211 of the workpiece positioning device. In this embodiment, the spacer 34 can evenly distribute the pressure transmission of the eccentric cam 31 to the wedge 211 of the positioning assembly 20, and ensure that the positioning assembly 20 can smoothly move along the guide rod 10.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. A workpiece positioning device, comprising:

the guide rod is used for being inserted into a hole of a workpiece, and one end of the guide rod inserted into the hole of the workpiece is provided with a limiting part;

the positioning assembly comprises at least one group of adjusting parts, and each group of adjusting parts comprises a wedge block and a first moving block; the wedge block is sleeved on the guide rod in a sliding mode, and a first inclined plane is arranged on one side, away from the guide rod, of the wedge block; the first moving block is arranged at one end, close to the limiting part, of the wedge block, a second inclined surface abutted against the first inclined surface is arranged at one end of the first moving block, and the other end, close to the limiting part, of the first moving block is abutted against the limiting part;

the pressing component is located at one end, far away from the limiting portion, of the guide rod, abuts against one end, far away from the first moving block, of the wedge block and is used for pushing the wedge block to extrude the first moving block, and the first moving blocks move towards the inner direction, close to the hole of the workpiece, relative to the guide rod, so that the inner side wall of the hole of the workpiece is pressed tightly by the first moving blocks.

2. The workpiece positioning device according to claim 1, wherein the positioning assembly further comprises a second moving block arranged along an axial direction of the guide rod, the second moving block is located between the pressing assembly and the wedge, a third inclined surface is arranged on one side of the second moving block facing the guide rod, and the third inclined surface is located at one end close to the wedge; the wedge block adjacent to the second moving block is provided with two first inclined planes, the two first inclined planes are respectively positioned on two opposite sides of the wedge block, one first inclined plane is abutted with the third inclined plane, and the other first inclined plane is abutted with the second inclined plane.

3. The workpiece positioning device of claim 2, wherein the second movable block is a circular ring having a C-shaped cross section.

4. The workpiece positioning device according to claim 1, wherein a fourth inclined surface is provided on a side of the limiting portion facing away from the guide rod, and the fourth inclined surface is located at an end close to the first moving block; the first moving block adjacent to the limiting part is provided with two second inclined planes which are respectively positioned at two opposite sides of the first moving block, wherein one second inclined plane is abutted with the fourth inclined plane, and the other second inclined plane is abutted with the first inclined plane.

5. The workpiece positioning device of claim 1,

the wedge block is provided with two first inclined planes which are respectively positioned at two opposite sides of the wedge block;

the first moving block is provided with two second inclined planes which are respectively positioned at two opposite sides of the first moving block;

the second inclined surface of each adjusting piece is abutted with the first inclined surface of another adjacent adjusting piece.

6. The workpiece positioning device according to any one of claims 1 to 5, wherein the first moving block is a circular ring having a C-shaped cross section.

7. The workpiece positioning device according to any one of claims 1 to 5, wherein the pressing assembly comprises an eccentric cam, the eccentric cam is provided with a shaft hole and a clearance groove, the eccentric cam abuts against the wedge block, a rotating shaft is rotatably mounted in the shaft hole and connected with the guide rod, the axis of the rotating shaft intersects with the axis of the guide rod, the clearance groove is connected with the shaft hole, and the clearance groove is used for allowing the guide rod to move when the eccentric cam rotates along the rotating shaft.

8. The workpiece positioning device of claim 7, wherein the pressing assembly further comprises a handle coupled to the eccentric cam.

9. The workpiece positioning device of claim 7, wherein the spindle is threadedly coupled to the guide.

10. A workpiece positioning device as claimed in claim 7, characterised in that a shim is provided between the eccentric cam and the wedge.