Positioning device

Abstract

The utility model provides a positioning device which is used for positioning two workpieces. The positioning device comprises a base, two first rails and a positioning hole are arranged on the base, and the two first rails are parallel to each other and are symmetrically and transversely arranged near the side edge of the base; the two movable base plates are arranged in the longitudinal direction of the base, move in the first rails through protruding blocks located on the lower portions of the movable base plates and can be locked at fixed positions, and each movable base plate is provided with a second rail and a locking groove channel which extend in the longitudinal direction and are parallel to each other; and the limiting block can move in the second track and can be locked in the locking groove channel. The two workpieces can be positioned at preset positions through the front-back movement of the two movable base plates on the base and the left-right movement of the limiting blocks on the movable base plates. By adopting the positioning device, the production cost can be reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to a positioning device for positioning workpieces. More particularly, the utility model relates to a positioning device for positioning workpieces in a common rail body high-pressure deburring production line. BACKGROUND

[0002] On a common rail body production line, there are many similar components, which have partially same structural features. For example, fuel injectors have many types, but generally have roughly similar structures. However, on the existing high-pressure deburring production line, each type of fuel injector needs to be positioned by a positioning device. These positioning devices generally include a base plate and a limiting block fixed on the base plate, and different limiting blocks need to be replaced for fuel injectors of different sizes and structures. Therefore, various positioning devices are needed to adapt to components of different sizes and structures, which results in high cost of the positioning devices.

[0003] In any case, the workpieces to be positioned have similar features, so that the use of a universal positioning device can reduce the cost.

[0004] Therefore, there is a need in the art for a universal positioning device that can be used to position these similar components, thereby reducing production costs. SUMMARY

[0005] The technical problem to be solved by the utility model is to provide a universal device to reduce production costs.

[0006] To solve the above technical problem, the utility model provides a positioning device for positioning two workpieces. The positioning device comprises a base plate provided with two first tracks and a positioning hole, the two first tracks are parallel to each other and symmetrically arranged transversely near the side edge of the base plate; two movable base plates are arranged along the longitudinal direction of the base plate and move in the first tracks through the protrusions at the lower part thereof, and can be locked at fixed positions, each movable base plate is provided with second tracks parallel to each other and extending along the longitudinal direction and locking grooves; and a limiting block can move in the second tracks and can be locked in the locking grooves. Wherein, through the forward and backward movement of the two movable base plates on the base plate and the left and right movement of the limiting block on the movable base plate, the two workpieces can be positioned at the predetermined positions.

[0007] According to one preferred embodiment of the utility model, the movable base plate can be locked on the base plate by a screw, and the limiting block can be locked on the movable base plate by a screw.

[0008] According to one preferred embodiment of the utility model, the two workpieces are positioned on the positioning device in point symmetry, and the symmetrical point falls on the longitudinal center axis of the machining clamping jaw when the workpiece is clamped.

[0009] According to one preferred embodiment of the utility model, on each of the movable base plates, the limiting block comprises: a pair of support blocks having notches for accommodating and supporting the workpiece, the pair of support blocks being capable of moving up and down to adjust the support height; a pair of height limiting blocks each comprising a protrusion facing the hole in the end of the workpiece and limiting the height of the workpiece by axially inserting the protrusion into the hole of the workpiece; an angle limiting block comprising a flat limiting plane and determining the angle of the workpiece by making the limiting plane abut against the flat part of the workpiece; and a longitudinal position limiting block determining the longitudinal position of the workpiece on the corresponding movable base plate by making the end of the workpiece abut against the longitudinal position limiting block.

[0010] According to one preferred embodiment of the utility model, the limiting plane of the angle limiting block has two assembly directions to adapt to different positioning requirements of the workpiece.

[0011] According to one preferred embodiment of the utility model, the positioning hole is a center positioning hole arranged on the longitudinal center axis of the base, and the limiting block further comprises a center stopper installed on the center positioning hole, and the lateral distance between the two workpieces is adjusted by moving the two movable base plates close to each other so that the two workpieces loaded on the two movable base plates abut against the two sides of the center stopper, respectively.

[0012] According to one preferred embodiment of the utility model, the positioning hole is a side positioning hole arranged on the front and rear sides of the base, and the limiting block further comprises a pair of outer stoppers installed on the side positioning hole, and the lateral distance between the two workpieces is adjusted by moving the two movable base plates away from each other so that the two workpieces loaded on the two movable base plates abut against the pair of outer stoppers, respectively.

[0013] According to one preferred embodiment of the utility model, on each of the movable base plates, the limiting block further comprises: an orientation indicating block comprising a stand column, the stand column being capable of being located at different positions of the orientation indicating block to guide the mounting direction of the lug of the workpiece by the presence of the stand column; and / or an auxiliary support limiting block having a convex column, the auxiliary support limiting block being capable of positioning the workpiece by the engagement of the convex column with the hole on the workpiece or assisting in supporting the workpiece by the convex column.

[0014] According to one preferred embodiment of the utility model, the positioning device is used for positioning two workpieces on a high-pressure deburring production line.

[0015] According to one preferred embodiment of the utility model, the positioning device is made of alloy steel.

[0016] The positioning device of the utility model realizes that two workpieces are positioned at the predetermined position through the front and back movement of the two movable base plates on the base and the left and right movement of the limiting blocks on the movable base plates. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to make the person skilled in the art more fully understand the utility model, the specific implementation of the utility model will be described in detail below in combination with the drawings.

[0018] Figure 1 is a perspective view of the positioning device of one embodiment of the utility model;

[0019] Figure 2 is Figure 1 is a top view of the positioning device shown in the figure;

[0020] Figure 3 is Figure 1 is a perspective view of the positioning device loaded with workpieces; and

[0021] Figure 4 is a schematic side view of the workpiece clamped by the machining clamping jaw. DETAILED DESCRIPTION

[0022] In order to make the utility model more clear, one specific embodiment of the utility model will be described in detail below in combination with the drawings, but the utility model is not limited to the embodiment. It should be noted that the orientation terms used in the text are only convenient for referring to the structure of the product in the drawings, and the orientation described is only the direction shown in the drawings, and does not necessarily represent the actual use direction of the product.

[0023] The utility model provides a kind of universal positioning device, adopt this positioning device can position workpiece of different structure and size, thus need not frequently replace positioning device. This universal positioning device only needs to be positioned to different workpieces by adjusting movable base plate and limiting block, so that various different workpieces can share same positioning device. For example, workpiece of different thickness, workpiece of different length can be positioned by this universal device.

[0024] Figures 1 to 4 One specific embodiment of the utility model is shown. Specifically, Figure 1 is a perspective view of the positioning device 1 of this embodiment of the utility model. Figure 2 is Figure 1A plan view of the positioning device 1 shown. Figure 3 is Figure 1 A perspective view of the positioning device 1 shown has loaded the workpiece 2. Figure 4 is a schematic side view of the workpiece being clamped by the machining jaw. The following will be described in conjunction with Figures 1 to 4 .

[0025] Before going into specific description, the following definitions are made in relation to the orientation in this document: the X direction of the base 3 as Figure 2 shown is defined as the length direction or longitudinal direction or left-right direction; the Y direction of the base 3 as Figure 2 shown is defined as the width direction or transverse direction or front-rear direction; the Z direction of the perpendicular line through the intersection of the X direction and the Y direction is defined as the up-down direction or height direction. Unless otherwise specified, the transverse direction, longitudinal direction, front-rear direction, left-right direction described in this document are all in reference to the above definitions. For example, the movement of the moving base 4 along the Y direction can be referred to as front-rear movement. For example, the extension direction of the first track 31 is the transverse direction; the extension direction of the second track 41 is the longitudinal direction. For example, up-down movement indicates movement along the Z direction. No further elaboration is made here.

[0026] The description of the utility model is taken as an example of the high-pressure water jet deburring machining station on the common rail oil injector production line. The positioning device 1 is used to position the workpiece 2 at a predetermined angle and position on the high-pressure deburring production line to be clamped by the machining jaw 6. According to the shape of the workpiece 2 and the position of the burr, in order to ensure that the nozzle of the high-pressure water jet can accurately aim at the area needing deburring, the position and angle of the workpiece need to be adjusted in advance by the positioning device to ensure that the workpiece 2 is clamped by the machining jaw 6 at a suitable angle and position. On the high-pressure deburring production line, the machining jaw 6 for deburring needs to clamp a pair of point-symmetric workpieces 2 at the same time, as Figure 3 shown. The symmetric point corresponds to the longitudinal center axis of the machining jaw 6 when the workpiece 2 is clamped, as Figure 4 shown, that is, the symmetric point falls on the longitudinal center axis.

[0027] As Figure 1 shown, the positioning device 1 of the utility model comprises a base 3, two moving bases 4 and limit blocks. The two moving bases 4 can be fixed on the base 3 by screws, and the limit blocks can be fixed on the moving bases 4 by screws. Through the front-rear movement of the two moving bases 4 on the base 3 and the left-right movement of the limit blocks on the moving bases 4, the two supported workpieces 2 can be positioned at a predetermined position. The predetermined position is, for example, a predetermined height, a predetermined angle, a predetermined center transverse distance, a predetermined longitudinal position, etc.

[0028] The base 3 is provided with two first tracks 31 and positioning holes. The two first tracks 31 are parallel to each other and symmetrically arranged transversely along the base 3 near the side edges of the base 3. The base 3 is fixed on a workbench to provide stable support. The processing clamping jaw 6 clamps the workpiece along the Z direction. The first tracks 31 are usually arranged along the two sides of the base 3, as shown in Figure 1 .

[0029] The extension direction of the two moving base plates 4 is perpendicular to the extension direction of the first tracks 31, and the two moving base plates 4 can move towards and away from each other along the first tracks 31 to adjust the transverse distance between the axes of the two workpieces 2, i.e. the distance between the axes of the two workpieces 2 along the Y direction. The two moving base plates 4 are provided with protrusions near the longitudinal ends thereof corresponding to the two first tracks 31 to move along the transverse direction of the base 3. The two moving base plates 4 can be fixed on the base 3 by screws.

[0030] According to a preferred embodiment, the positioning holes are central positioning holes 32 arranged on the longitudinal center axis of the base 3, as shown in Figure 2 . The limiting block further comprises a central stopper mounted on the central positioning hole 32, and by moving the two moving base plates 4 towards each other, the two workpieces 2 loaded on the moving base plates 4 abut against the two centrally mounted central stoppers to adjust the transverse distance between the two workpieces 2.

[0031] According to an optional embodiment, the positioning holes are side positioning holes 33 arranged on the front and rear side surfaces of the base 3, as shown in Figure 1 . In this case, the limiting block further comprises a pair of outer stoppers mounted on the side positioning holes 33, and by moving the two moving base plates 4 away from each other, the two workpieces 2 loaded on the moving base plates 4 abut against the pair of outer stoppers respectively to adjust the transverse distance between the two workpieces 2.

[0032] The two moving base plates 4 are plate-shaped structures. The bottom of the moving base plate 4 is provided with a structure capable of moving in the first track 31, such as a protrusion. The top of the moving base plate 4 is provided with a second track 41 extending in the longitudinal direction. The second track 41 extends along the X direction. The second track 41 extends the entire longitudinal length of the moving base plate 4. The limiting block can move left and right along the X direction in the second track 41, thereby being able to adjust the position of the workpiece supported by the limiting block in the longitudinal direction. In addition, a locking channel 42 is further arranged on the top of the moving base plate 4 parallel to the second track 41, and after the position of the limiting block has been adjusted, the limiting block can be fixed in the locking channel 42 by a fixing device, thereby ensuring the stability of the positioning. The fixing device is, for example, a screw.

[0033] On each of the mobile base plates 4, the limit blocks can include various functional limit blocks. These limit blocks generally include a base block that is movable in the second track 41, and a functional block that is generally movably mounted to the base block. These functional blocks are adjustable up and down or along the base block. The base block and the functional block generally move as a unit on the second track 41, and are therefore described in the following as a limit block as a whole.

[0034] The limit blocks of the present utility model generally include a pair of support blocks 51, a pair of height limit blocks 52, an angle limit block 53, and a longitudinal position limit block 54. According to one embodiment, the limit blocks further include an orientation indication block 55. According to another embodiment, the limit blocks further include an auxiliary support limit block 56. The types of limit blocks are not limited, and various designs can be made based on the requirements of the workpieces.

[0035] The present utility model is not limited to the types of limit blocks listed here.

[0036] Specifically, the pair of support blocks 51 has notches for accommodating the workpieces 2, and supports the workpieces 2 through the notches. The pair of support blocks 51 can change their support height by moving up and down, thereby adapting to the height requirements of the workpieces 2. The positioning device 1 further includes a gasket for the support blocks 51. The shape of the gasket substantially conforms to the shape of the notches of the support blocks, so as to be selectively placed on the support blocks 51 as needed to meet the special requirements of the workpieces 2.

[0037] According to one embodiment, each height limit block 52 includes a protrusion 521 of a hole in the end facing the workpiece 2. The diameter of the protrusion 521 is adapted to the size of the hole of the workpiece 2, so as to limit the height of the workpiece 2 by inserting the protrusion 521 into the hole of the workpiece 2. The pair of height limit blocks 52 limits the height of the hole from both sides of the workpiece, thereby limiting the axial height of the workpiece 2.

[0038] According to one embodiment, the angle limit block 53 includes a flat limit plane 531, and determines the angle of the workpiece 2 by making the limit plane 531 abut against the flat portion 21 of the workpiece 2. According to one preferred embodiment, the limit plane 531 of the angle limit block 53 has two assembly directions to meet the specific positioning requirements of different workpieces 2.

[0039] According to one embodiment, the longitudinal position limit block 54 determines the longitudinal position of the workpiece 2 on the mobile base plate 4 by making the end of the workpiece 2 abut against the longitudinal position limit block 54. During the process of limiting the longitudinal position, the assistance of an external measuring device can be required. For example, the specific position of the longitudinal position limit block 54 can be set by adjusting the tray.

[0040] According to one embodiment, the orientation indicating block 55 comprises a post. The post can be located at different positions of the base block of the orientation indicating block 55 to guide the mounting direction of the lugs of the workpiece by the presence of the post, thus serving as a foolproof. Optionally, the auxiliary support limiting block 56 also has a protruding post 561, which can be positioned by the engagement of the protruding post with the hole on the workpiece 2, or supported the workpiece from the outside by the protruding post.

[0041] The positioning device of the utility model is preferably made of alloy steel. Other materials with similar hardness and wear resistance can also be considered.

[0042] The following examples illustrate several typical positioning processes using the positioning device of the utility model. These positions can be performed individually or in combination, sequentially or randomly according to requirements, and the utility model is not limited to these examples.

[0043] Before positioning using the positioning device 1 of the utility model, first remove the components that are not in use. For example: remove the screws so that the moving base plate 4 can move along the Y direction on the first track 31, and so that each limiting block can move along the X direction on the second track 41.

[0044] The adjustment of the height of the workpiece 2 is as follows. Place the workpiece 2 on a pair of support blocks 51. According to the preset height, first adjust the height of the pair of height limiting blocks 52. Then insert the pair of height limiting blocks 52 from the left and right sides into the holes of the workpiece 2 through the protrusions 521 thereof, thereby determining the height of the axis of the workpiece 2 by the pair of height limiting blocks 51. Thereafter, adjust the two support blocks 51 so that the two support blocks 51 can just abut against the outer periphery of the workpiece 2, and then fix the support blocks 51. Finally, remove the height limiting blocks 51 from the moving base plate 4. After adjusting one workpiece 2, adjust another workpiece 2.

[0045] The adjustment of the distance between the axes of the two workpieces 2 along the transverse direction is as follows: install the center block into the center positioning hole 32 of the base 3. Move the moving base plates 4 loaded with workpieces relative to each other until the side walls of the two workpieces 2 abut against the two sides of the center block, respectively. Then tighten the screws to lock the moving base plates 4 on the base 3 to fix the distance. Finally, remove the center block from the positioning device 1.

[0046] According to another optional embodiment, the limiting blocks can be a pair of identical outer blocks, which are respectively installed into the side positioning holes 33 on the front and rear sides of the base 3 of the positioning device 1 to position from the outside. The moving base plates 4 loaded with workpieces 2 can be moved away from each other until the side walls of the two workpieces 2 abut against the inner sides of the two outer blocks, respectively. Then tighten the screws to lock the moving base plates 4 on the base 3. Finally, remove the outer blocks from the positioning device 1.

[0047] The adjustment of the position of the workpiece 2 on the positioning device 1 along the longitudinal direction is as follows: the positioning device 1 loaded with two workpieces 2 is placed on the adjustment tray, and then the zero position of the positioning device 1 is set on the adjustment tray. Thereafter, the longitudinal position limiting block 54 is installed on the second rail 42, and the position of the longitudinal position limiting block 54 on the positioning device 1 is determined by using the adjustment tray. Finally, the end of the workpiece 2 is made to abut against the longitudinal position limiting block 54.

[0048] The adjustment of the angle of the workpiece 2 is as follows: before the angle limiting block 53 is loaded onto the positioning device 1, the angle of the angle limiting block 53 is first determined by using the angle gauge. As known in the art, first, the desired angle of the workpiece 2 is set on the angle gauge, and then the angle limiting block 53 is made to abut against the set angle gauge, and then the screw is tightened to fix the angle of the angle limiting block 53. Finally, the angle limiting block 53 with the fixed angle is loaded onto the positioning device 1. Thereafter, the flat portion 21 of the workpiece 2 is made to abut against the limiting plane 531 of the angle limiting block 53. Finally, the screw is tightened to lock the angle limiting block.

[0049] By using the universal positioning device to replace the positioning device customized for each component, the production cost is significantly reduced. The universal positioning device makes maintenance easier and reduces the risk of incorrect clamping. Overall, the design of such a universal positioning device aims to reduce costs and improve efficiency by improving the universality of the device.

[0050] The above specific embodiments are only used to illustrate the present application, and not to limit the present application. Those skilled in the art can make various modifications and variations without departing from the inventive concept of the present application, therefore all equivalent technical solutions fall within the protection scope of the present application, the protection scope of the present application is defined by the appended claims.

Claims

1. A positioning device (1) for positioning two workpieces (2), characterized in that, The positioning device (1) includes: The base (3) is provided with two first tracks (31) and positioning holes. The two first tracks (31) are parallel to each other and are arranged laterally symmetrically along the side of the base (3). Two movable base plates (4) are arranged longitudinally along the base (3), move in the first track (31) by means of a protrusion located on their lower parts, and can be locked in a fixed position. Each of the two movable base plates (4) is provided with a second track (41) extending longitudinally and parallel to each other, and a locking channel (42); and A limiting block that can move in the second track (41) and can be locked in the locking channel (42); The two workpieces (2) can be positioned at a predetermined position by moving the two movable base plates (4) back and forth on the base (3) and by moving the limiting block left and right on the two movable base plates (4).

2. The positioning device (1) according to claim 1, characterized in that, The two movable base plates (4) can be locked onto the base (3) by screws, and the limiting block can be locked onto the two movable base plates (4) by screws.

3. The positioning device (1) according to claim 1, characterized in that, The two workpieces (2) are positioned on the positioning device (1) in a point-symmetric manner, wherein the symmetric point falls on the longitudinal central axis of the machining jaw (6) when the workpiece (2) is clamped.

4. The positioning device (1) according to any one of claims 1 to 3, characterized in that, On each of the two movable substrates (4), the limiting block includes: A pair of support blocks (51) having recesses for receiving and supporting the workpiece (2), the pair of support blocks (51) being able to move up and down to adjust the support height; A pair of height limiting blocks (52), each of which includes a protrusion (521) facing a hole in the end of the workpiece (2), and limits the height of the workpiece (2) by axially inserting the protrusion (521) into the hole of the workpiece (2); An angle limiting block (53) includes a flat limiting plane (531), and the angle of the workpiece (2) is determined by abutting the limiting plane (531) against the flat portion (21) of the workpiece (2); and The longitudinal position limiting block (54) determines the longitudinal position of the workpiece (2) on the corresponding movable substrate by abutting the end of the workpiece (2) against the longitudinal position limiting block (54).

5. The positioning device (1) according to claim 4, characterized in that, The limiting plane (531) of the angle limiting block (53) has two assembly directions to adapt to different positioning requirements of the workpiece.

6. The positioning device (1) according to any one of claims 1 to 3, characterized in that, The positioning hole is a central positioning hole (32) set on the longitudinal central axis of the base (3), and the limiting block also includes a central stop block. The central stop block is installed on the central positioning hole (32). By moving the two movable base plates (4) closer to each other, the two workpieces (2) loaded on the two movable base plates (4) respectively abut against the two sides of the central stop block to adjust the lateral distance between the two workpieces (2).

7. The positioning device (1) according to any one of claims 1 to 3, characterized in that, The positioning hole is a side positioning hole (33) provided on the front and rear sides of the base (3), and the limiting block also includes a pair of outer stops. The pair of outer stops are installed on the side positioning hole (33). By moving the two movable base plates (4) away from each other, the two workpieces (2) loaded on the two movable base plates (4) abut against the pair of outer stops to adjust the lateral distance between the two workpieces (2).

8. The positioning device (1) according to any one of claims 1 to 3, characterized in that, On each of the two movable substrates (4), the limiting block further includes: A directional indicator block (55) includes a post that can be positioned at different locations on the directional indicator block (55) to guide the mounting direction of the lug of the workpiece (2) by the presence of the post; and / or An auxiliary support limiting block (56) has a protruding post. The auxiliary support limiting block (56) can position the workpiece (2) by engaging the protruding post with a hole on the workpiece (2), or assist in supporting the workpiece (2) by the protruding post.

9. The positioning device (1) according to any one of claims 1 to 3, characterized in that, The positioning device (1) is used to position two workpieces (2) on the high-pressure deburring production line.

10. The positioning device (1) according to any one of claims 1 to 3, characterized in that, The positioning device (1) is made of alloy steel.

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