Positioning and clamping fixture for thrust plate production

Abstract

The utility model discloses a positioning and clamping fixture for thrust plate production, which comprises a support frame, the support frame comprises a first support plate and a second support plate which are vertically arranged, and the first support plate and the second support plate are fixedly connected through a thrust plate placing column which is horizontally arranged; a thrust plate pushing screw rod is arranged between the first supporting plate and the second supporting plate, rotates through a rotating motor fixed on the second supporting plate, and pushes a thrust plate on a thrust plate placing column to the position under a lifting type thrust plate clamping device on the first supporting plate at the same time; and clamping is achieved. According to the device, through the arrangement of the thrust plate pushing screw rod, continuous circulating feeding of thrust plates can be achieved, meanwhile, three-point clamping of the thrust plates is achieved, clamping of the thrust plates is more stable, meanwhile, due to the existence of the thrust plate limiting plate, clamping of the thrust plates is more accurate, and then the machining precision of the thrust plates is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of thrust washer processing, and particularly relates to a positioning and clamping fixture for thrust washer production. Background Art

[0002] As a kind of engine sliding bearing, the thrust washer mainly plays the role of axial support for the crankshaft in the engine. It is installed between the thrust end face of the engine crankshaft and the cylinder block plane. Its function is to bear the axial thrust caused by the clutch, etc., for the axial positioning of the crankshaft, and at the same time ensure a certain axial clearance. In order to ensure the convenient assembly of the thrust washer and the free rotation of the crankshaft, the engine cylinder block is usually machined with a cutter groove at the installation position of the thrust washer, because it is necessary to machine a chamfer of 0.1mm - 0.6mm at the outer diameter of the thrust washer (such as Figure 1 at position A in the figure). However, in the prior art, when machining the chamfer of the outer diameter of the thrust washer, it is necessary to manually place the thrust washer on a specific tooling and then use a turning tool for machining. This manual placement method has low production efficiency, and sometimes the placement position is inaccurate, resulting in low machining accuracy. Summary of the Utility Model

[0003] In view of the above-mentioned defects or deficiencies in the prior art, it is desired to provide a positioning and clamping fixture for thrust washer production.

[0004] According to the technical solution provided by the embodiment of the present application, a positioning and clamping fixture for thrust washer production includes a support frame. The support frame includes a first support plate and a second support plate placed vertically. The first support plate and the second support plate are fixedly connected by a horizontally arranged thrust washer placement column. A thrust washer pushing screw is arranged between the first support plate and the second support plate. While the thrust washer pushing screw is rotated by a rotary motor fixed on the second support plate, the thrust washer on the thrust washer placement column is pushed to directly below the lifting thrust washer clamping device on the first support plate to achieve clamping.

[0005] Furthermore, thrust washer limiting plates are fixedly arranged on both side end faces of the thrust washer placement column to achieve the positioning of the thrust washer.

[0006] Furthermore, a guiding plate is arranged on the end face of the thrust washer limiting plate adjacent to the second support plate and is placed obliquely to guide the positioning of the thrust washer.

[0007] Furthermore, a thrust washer pushing device is arranged on the second support plate. The thrust washer pushing device includes a linear drive motor and a pushing arc plate. The linear drive motor fixed on the second support plate is fixedly connected to the pushing arc plate. The pushing arc plate is slidably connected to the upper end face of the thrust washer placement column to achieve the automatic feeding of the thrust washer.

[0008] Furthermore, a thrust washer ejection hole is arranged on the first support plate for the automatic discharging of the machined thrust washer.

[0009] Further, one end of the thrust piece pushing screw is fixed on the first support plate through a bearing, and the other end is fixedly connected to the motor shaft of the rotating motor, so as to realize the stability of the thrust piece pushing screw.

[0010] Further, the height of the convex thread on the thrust piece pushing screw is greater than the thickness of the thrust piece, so that the thrust piece can be inserted into the gap between the thrust piece pushing screw and the thrust piece placing column, which is convenient for the thrust piece pushing screw to push the thrust piece.

[0011] Further, the lifting type thrust piece clamping device includes a first arc-shaped clip, a second arc-shaped clip and a clamping screw. The distance between the first arc-shaped clip and the second arc-shaped clip is increased and decreased through the clamping screw, so as to realize the clamping and loosening of the thrust piece by the lifting type thrust piece clamping device.

[0012] Further, both the first arc-shaped clip and the second arc-shaped clip are slidably connected to an inverted L-shaped plate, and the L-shaped plate is slidably connected to the first support plate through a slider, so as to realize the stability of the movement of the first arc-shaped clip and the second arc-shaped clip.

[0013] In summary, the beneficial effects of the present application are as follows: Through the setting of the thrust piece pushing screw, the present application device can realize the continuous cyclic feeding of the thrust piece. During feeding, since the two ends of the thrust piece are clamped when the thrust piece pushing screw feeds and the thrust piece is clamped by the lifting type thrust piece clamping device, the clamping of the thrust piece is more stable. At the same time, due to the existence of the thrust piece limiting plate, the clamping of the thrust piece is more accurate, thereby improving the processing precision of the current thrust piece. Description of the Drawings

[0014] By reading the detailed description of the non-restrictive embodiments with reference to the following drawings, other features, purposes and advantages of the present application will become more obvious:

[0015] Figure 1 It is a schematic structural diagram of the overall device of the present utility model;

[0016] Figure 2 It is a schematic structural diagram of the overall device of the present utility model after removing the second support plate;

[0017] Figure 3 It is a schematic exploded view of the present utility model;

[0018] Figure 4 It is a schematic exploded view of the lifting type thrust piece clamping device of the present utility model;

[0019] Figure 5 It is a schematic structural diagram of the clamping screw of the present utility model.

[0020] Reference numerals in the figure: support frame - 1; first support plate - 11; thrust piece ejection hole - 111; second support plate - 12; thrust piece placement column - 2; thrust piece pushing screw - 3; raised thread - 31; rotary motor - 4; lifting thrust piece clamping device - 5; first arc-shaped clip - 51, second arc-shaped clip - 52; clamping screw - 53; L-shaped plate - 54; thrust piece limiting plate - 6; guiding plate - 61; thrust piece pushing device - 7; linear drive motor - 71; pushing arc plate - 72. Detailed implementation manner

[0021] The following further elaborates on the present application in conjunction with the accompanying drawings and embodiments. It can be understood that the specific embodiments described herein are merely used to explain the related invention and do not limit the invention. Additionally, it should be noted that for the sake of description, only the parts related to the invention are shown in the drawings.

[0022] It should be noted that, without conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The following will elaborate on the present application in detail with reference to the drawings and embodiments.

[0023] A positioning clamping fixture for thrust piece production, as Figure 1 shown, the support frame 1 includes a vertically placed first support plate and a second support plate 12,

[0024] As Figure 1 , Figure 2 and Figure 3 shown, the horizontally placed cylindrical thrust piece placement column 2 is fixedly connected to the first support plate 11 and the second support plate 12, the horizontally placed thrust piece pushing screw 3 is horizontally placed between the first support plate 11 and the second support plate 12, one end of the thrust piece pushing screw 3 is fixed on the first support plate 11 through a bearing, and the other end is fixedly connected to the motor shaft of the rotary motor 4;

[0025] On the opposite end faces of the first support plate 11 and the second support plate 12, there is a lifting thrust piece clamping device 5. The lifting thrust piece clamping device 5 moves up and down on the end face of the first support plate 11 through an electric slider. The distance between the first arc-shaped clip 51 and the second arc-shaped clip 52 on the lifting thrust piece clamping device 5 is realized to be far away and reduced through the clamping screw 53. When the distance between the first arc-shaped clip 51 and the second arc-shaped clip 52 changes, the first arc-shaped clip 51 and the second arc-shaped clip 52 can slide horizontally on the L-shaped plate 54. The lifting thrust piece clamping device 5 is fixedly connected to the electric slider through the L-shaped plate 54;

[0026] As Figure 4 and Figure 5As shown, the upper end surfaces of the first arc-shaped clip 51 and the second arc-shaped clip 52 are slidably connected to the horizontal plate of the L-shaped plate 54 through sliders. The clamping screw 53 is provided with threads with opposite helix directions. The first arc-shaped clip 51 and the second arc-shaped clip 52 are respectively sleeved on the clamping screw 53 through screw sleeves with different helix directions. One end of the clamping screw 53 is fixedly connected to a driving motor arranged in the vertical plate of the L-shaped plate 54, and the other end is fixedly connected to the horizontal plate of the L-shaped plate 54, which is not shown in the figure.

[0027] As Figure 3 shown, a thrust piece pushing hole 111 is provided on the first support plate 11. The thrust piece pushing hole 111 is located on the first support plate 11 above the thrust piece placing column 2.

[0028] Horizontal thrust piece limiting plates 6 are provided at the middle parts of the left end and the right end of the thrust piece placing column 2. On the end surface of the thrust piece limiting plate 6 adjacent to the second support plate 12, a guiding plate 61 is provided which is inclined downward and towards the second support plate 12.

[0029] A pushing arc plate 72 is slidably connected to the end of the thrust piece placing column 2 fixedly connected to the second support plate 12. The linear driving motor 71 fixed on the second support plate 12 is fixedly connected to the pushing arc plate 72. The pushing arc plate 72 is slidably connected to the upper end surface of the thrust piece placing column 2, and the pushing arc plate 72 is fixedly connected to the linear driving motor 71 fixed on the second support plate 12. The pushing arc plate 72 slides on the thrust piece placing column 2 through the linear driving motor 71.

[0030] Before use, first directly place the thrust piece to be processed upside down on the end of the thrust piece placing column 2 close to the second support plate 12 and behind the pushing arc plate 72.

[0031] Then start the rotating motor 4 to make the two thrust piece pushing screws 3 rotate. Then start the linear driving motor 71 to make the pushing arc plate 72 move on the thrust piece placing column 2. When the thrust piece is pushed to the part of the thrust piece pushing screw 3 where there is a raised thread 31, the raised thread 31 will move the pushed thrust piece towards the position of the first support plate 11 (pushing principle: the conveying principle of the screw conveying device). During the pushing process, since the two lower end surfaces of the thrust piece will be respectively guided by the guiding plate 61 until both end surfaces of the thrust piece are placed on the thrust piece limiting plate 6, preventing the two end surfaces of the thrust piece from not being on the same end surface and affecting the precise fixation of the thrust piece.

[0032] When the thrust piece is pushed to directly below the lifting thrust piece clamping device 5, start the electric slider to lower the lifting thrust piece clamping device 5, so that the lower end surfaces of the first arc-shaped clamping piece 51 and the second arc-shaped clamping piece 52 abut against the upper end surface of the thrust piece placement column 2. Then start the drive motor in the L-shaped plate 54 to rotate the clamping screw 53. Since the clamping screw 53 is provided with threads with opposite helix directions, when the clamping screw 53 rotates in one direction, the distance between the first arc-shaped clamping piece 51 and the second arc-shaped clamping piece 52 connected by the thread will be reduced and increased. When the distance between the first arc-shaped clamping piece 51 and the second arc-shaped clamping piece 52 is reduced, the thrust piece can be clamped;

[0033] After the thrust piece is clamped, start the turning tool to operate on the thrust piece. After the operation is completed, rotate the clamping screw 53 in the reverse direction to increase the distance between the first arc-shaped clamping piece 51 and the second arc-shaped clamping piece 52 and loosen the thrust piece. At this time, continue to start the rotation motor 4 to make the thrust piece push the screw 3 continue to rotate, and push the completed thrust piece forward until it is pushed out from the thrust piece ejection hole 111. When the subsequent thrust piece is pushed by the thrust piece push screw 3 to directly below the lifting thrust piece clamping device 5, repeat the above steps to clamp and fix the thrust piece, and operate through the turning tool, thereby realizing the full automation of feeding, processing, and discharging, and greatly improving work efficiency.

[0034] The above description is only the preferred embodiment of the present application and the description of the technical principle and other solutions used. At the same time, the scope of the invention involved in the present application is not limited to the technical solutions formed by the specific combination of the above technical features, and should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the inventive concept. For example, the technical solutions formed by mutually replacing the above features with the (but not limited to) technical features with similar functions disclosed in the present application.

Claims

1. A positioning and clamping fixture for thrust plate production, characterized in that: include, A support frame (1), the support frame (1) comprising a first support plate (11) and a second support plate (12) placed vertically, the first support plate (11) and the second support plate (12) being fixedly connected via a thrust plate placement column (2) placed horizontally, A thrust plate pushing screw (3) is provided between the first support plate (11) and the second support plate (12). The thrust plate pushing screw (3) is rotated by a rotating motor (4) fixed to the second support plate (12), and at the same time, pushes the thrust plate on the thrust plate placement column (2) to the position directly below the lifting thrust plate clamping device (5) on the first support plate (11) to achieve clamping.

2. A positioning and clamping fixture for thrust washer production according to claim 1, characterized in that: Thrust plate limiting plates (6) are fixedly provided on both side end surfaces of the thrust plate placement column (2).

3. A positioning and clamping fixture for thrust washer production according to claim 2, characterized in that: An inclined guide plate (61) is provided on the end surface of the thrust plate limit plate (6) adjacent to the second support plate (12).

4. A positioning and clamping fixture for thrust washer production according to claim 1, characterized in that: The second support plate (12) is provided with a thrust plate pushing device (7), and the thrust plate pushing device (7) comprises a linear drive motor (71) and a pushing arc plate (72). The linear drive motor (71) fixed on the second support plate (12) is fixedly connected to the pushing arc plate (72), and the pushing arc plate (72) is slidably connected to the upper end surface of the thrust plate placement column (2).

5. A positioning and clamping fixture for thrust washer production according to claim 4, characterized in that: The first support plate (11) is provided with a thrust plate ejection hole (111) for automatically ejecting the processed thrust plate.

6. A positioning and clamping fixture for thrust washer production according to claim 1, characterized in that: One end of the thrust plate pushes the screw rod (3) to be fixed on the first support plate (11) via a bearing, and the other end is fixedly connected to the motor shaft of the rotating motor (4).

7. A positioning and clamping fixture for thrust washer production according to claim 6, characterized in that: The height of the protruding thread (31) on the thrust plate pushing the screw (3) is greater than the thickness of the thrust plate.

8. The positioning and clamping fixture for thrust washer production according to claim 1, characterized in that: The lifting thrust plate clamping device (5) comprises a first arc-shaped clamping piece (51), a second arc-shaped clamping piece (52) and a clamping screw (53), and the distance between the first arc-shaped clamping piece (51) and the second arc-shaped clamping piece (52) is increased or decreased by the clamping screw (53).

9. A positioning and clamping fixture for thrust washer production according to claim 8, characterized in that: The first arc-shaped clamping piece (51) and the second arc-shaped clamping piece (52) are both slidably connected to an inverted L-shaped plate (54), and the L-shaped plate (54) is slidably connected to the first supporting plate (11) via a sliding block.

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