Positioning fixture for large long-axis high-precision punching

Abstract

The utility model discloses a positioning fixture for large -scale long axle high accuracy punching, including base, a set of clamp mounting plate, a set of compression assembly, positioning assembly, first stable part and second stable part, clamp mounting plate is parallel and is established on the base, compression assembly is established on the clamp mounting plate, compression assembly includes a set of lower clamp, clamping pneumatic cylinder and upper clamp, lower clamp is established on both sides of clamp mounting plate, clamping pneumatic cylinder is established on clamp mounting plate, and is located lower clamp side, upper clamp is established on clamping pneumatic cylinder output, and lower clamp, upper clamp cooperation realizes the clamping of work piece, positioning assembly is established on the base, and positioning assembly includes limit platform and locating column, limit platform is established on the side of clamp mounting plate, and locating column is established on the side of limit platform away from clamp mounting plate. The utility model discloses a positioning fixture for large -scale long axle high accuracy punching, effectively guarantee the position of workpiece repeated clamping, greatly reduce the time of manual participation positioning, clamping, improve the efficiency.

Description

Technical Field

[0001] This utility model belongs to the field of positioning fixtures, and specifically relates to a positioning fixture for high-precision drilling of large long shafts. Background Technology

[0002] In the field of machining, traditional processes present many problems when performing high-precision drilling on large, long shaft parts.

[0003] First, before machining the workpiece, a lifting ring needs to be tightened at the large end. The machining angle is then confirmed by rotating the lever before hoisting it onto the machine tool. This process is inefficient and prone to errors. Second, after hoisting, the angle and position need to be manually adjusted repeatedly, which is time-consuming and difficult to guarantee accuracy. Finally, manually adjusting the height of the clamping blocks and tightening bolts to secure the workpiece is not only time-consuming and labor-intensive, but also prone to workpiece deformation or displacement due to uneven clamping force, affecting machining accuracy. The entire traditional process is inefficient, labor-intensive, and produces unstable machining quality, making it difficult to meet the demands of high-precision machining.

[0004] Therefore, the above problems urgently need to be solved. Utility Model Content

[0005] Purpose of the utility model: In order to overcome the above shortcomings, the purpose of this utility model is to provide a positioning fixture for high-precision drilling of large long shafts, which effectively ensures the repeated clamping position of the workpiece, greatly reduces the time for manual positioning and clamping, and improves efficiency and reduces errors caused by manual adjustment.

[0006] Technical Solution: To achieve the above objectives, this utility model provides a positioning fixture for high-precision drilling of large long shafts, including a base, a set of fixture mounting plates, a set of clamping components, a positioning component, a first stabilizing component, and a second stabilizing component; the fixture mounting plates are arranged parallel to the base; the clamping components are mounted on the fixture mounting plates; the clamping components include a set of lower clamps, a clamping cylinder, and an upper clamp; the lower clamps are located on both sides of the fixture mounting plates; the clamping cylinder is located on the fixture mounting plates and next to the lower clamps. The upper clamp is located at the output end of the clamping cylinder and above the lower clamp; the lower and upper clamps cooperate to clamp the workpiece; the positioning component is located on the base and beside the clamp mounting plate; the positioning component includes a limiting platform and a positioning column; the limiting platform is located beside the clamp mounting plate; the positioning column is erected on the side of the limiting platform away from the clamp mounting plate; the first stabilizing component is located beside the positioning column; the second stabilizing component is located on the clamp mounting plate away from the positioning component and between the lower clamps.

[0007] Furthermore, the lower and upper clamps work together to provide a stable clamping force, ensuring that the workpiece will not loosen during processing. The first stabilizing component is located next to the positioning column, and the second stabilizing component is located on the clamp mounting plate, so that the workpiece is supported in multiple directions, reducing the shaking of the workpiece during processing. The limiting stage can limit the lateral position of the workpiece, and through precise positioning, it reduces the positional deviation of the workpiece during processing, thereby improving processing accuracy.

[0008] Furthermore, the first stabilizing component includes a first rotary telescopic cylinder and a first pressure plate; the first rotary telescopic cylinder is mounted on the base; the first pressure plate is located at the output end of the first rotary telescopic cylinder and is controlled by the first rotary telescopic cylinder to achieve rotation and longitudinal movement. The first rotary telescopic cylinder and the first pressure plate, in conjunction with the positioning column, effectively stabilize the columnar protrusion on one side of the workpiece, ensuring that the workpiece will not shift during processing and improving production and processing accuracy.

[0009] Furthermore, the second stabilizing component includes a second rotary telescopic cylinder and a second pressure plate; the second rotary telescopic cylinder is mounted on the fixture mounting plate; the second pressure plate is located at the output end of the second rotary telescopic cylinder and is controlled by the second rotary telescopic cylinder to achieve rotation and horizontal movement. The second rotary telescopic cylinder and the second pressure plate, in conjunction with the limiting stage, provide stable horizontal pressure to the workpiece after it has been adjusted to the correct position, ensuring the stability of the workpiece during processing and helping to improve processing accuracy and quality.

[0010] Furthermore, the second stabilizing component also includes an auxiliary support plate; the auxiliary support plate is mounted on the second rotary telescopic cylinder and is used to provide auxiliary support for the workpiece. The auxiliary support plate can disperse the force on the workpiece, avoid excessive local stress on the workpiece, reduce the deformation of the workpiece caused by local stress, and ensure the machining accuracy and quality of the workpiece.

[0011] Furthermore, a rubber component is provided on the side of the second pressure plate near the workpiece to prevent damage to the workpiece.

[0012] Furthermore, the upper clamp is equipped with a contour chuck; the contour chuck is equipped with a rubber component. The contour chuck better conforms to the surface shape of the workpiece, and together with the rubber component, it effectively enhances the clamping force.

[0013] Furthermore, the contact surface between the lower clamp and the workpiece is provided with a rubber component, which increases the friction with the workpiece and provides a more stable clamping.

[0014] As can be seen from the above technical solution, this utility model has the following beneficial effects: 1. This utility model provides a positioning fixture for high-precision drilling of large long shafts, which can effectively ensure that the positional accuracy of repeated shaft clamping is within 0.1mm, significantly improving the accuracy and consistency of clamping; 2. This utility model provides a positioning fixture for high-precision drilling of large long shafts. It significantly reduces the time required for manual positioning and clamping, avoids errors caused by manual operation, and thus improves processing efficiency while ensuring the stability of processing accuracy, providing a strong guarantee for high-precision processing. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of a positioning fixture for high-precision drilling of large long shafts according to the present invention (showing two rotation states of the first pressure plate and the second pressure plate). Figure 2 This is a schematic diagram of the structure of a positioning fixture for high-precision drilling of large long shafts according to the present invention (showing two rotation states of the first pressure plate). In the picture: 1-Base; 11-Clamp mounting plate; 2-Clamping assembly; 21-Lower clamp; 22-Clamping cylinder; 23-Upper clamp; 231-Contouring chuck; 3-Positioning component; 31-Limiting platform; 32-Positioning column; 4-First stabilizing component; 41-First rotary telescopic cylinder; 42-First pressure plate; 5-Second stabilizing component; 51-Second rotary telescopic cylinder; 52-Second pressure plate; 53-Auxiliary support plate. Detailed Implementation

[0016] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model. Example

[0017] In this embodiment, as Figure 1 and Figure 2This utility model discloses a positioning fixture for high-precision drilling of large long shafts, including a base 1, a set of fixture mounting plates 11, a set of clamping components 2, a positioning component 3, a first stabilizing component 4, and a second stabilizing component 5; the fixture mounting plates 11 are arranged parallel to the base 1; the clamping components 2 are arranged on the fixture mounting plates 11; the clamping components 2 include a set of lower clamps 21, a clamping cylinder 22, and an upper clamp 23; the lower clamps 21 are arranged on both sides of the fixture mounting plates 11; the clamping cylinder 22 is arranged on the fixture mounting plates 11 and located beside the lower clamps 21; the upper clamp 23 is arranged on the base 1. The output end of the clamping cylinder 22 is located above the lower clamp 21; the lower clamp 21 and the upper clamp 23 cooperate to clamp the workpiece; the positioning component 3 is located on the base 1 and beside the clamp mounting plate 11; the positioning component 3 includes a limiting platform 31 and a positioning post 32; the limiting platform 31 is located beside the clamp mounting plate 11; the positioning post 32 is erected on the side of the limiting platform 31 away from the clamp mounting plate 11; the first stabilizing component 4 is located beside the positioning post 32; the second stabilizing component 5 is located on the clamp mounting plate 11 away from the positioning component 3 and between the lower clamps 21.

[0018] Specifically, a scale can be added to the base 1, and the clamp mounting plate 11 on the side away from the positioning component 3 can be horizontally adjusted as a preferred option; for workpieces of different lengths, only the position of the clamp mounting plate 11 needs to be horizontally adjusted to achieve the adaptation.

[0019] Specifically, the contact surface between the lower clamp 21 and the workpiece is arc-shaped, used to support the workpiece; the lower clamp 21 is fixed to both sides of the clamp mounting plate 11 by bolts to ensure that its position will not shift during processing and that the connection with the clamp mounting plate 11 is stable.

[0020] Specifically, the clamping cylinder 22 is preferably a hydraulic cylinder, which provides a greater output force than ordinary cylinders through the transmission of hydraulic oil, ensuring clamping stability and preventing vibration and displacement during processing.

[0021] In this embodiment, as Figure 1 and Figure 2 The first stabilizing component 4 includes a first rotary telescopic cylinder 41 and a first pressure plate 42; the first rotary telescopic cylinder 41 is disposed on the base 1; the first pressure plate 42 is disposed at the output end of the first rotary telescopic cylinder 41 and can be rotated and moved longitudinally under the control of the first rotary telescopic cylinder 41.

[0022] Specifically, the first rotary telescopic cylinder 41 is preferably a rotary pressing cylinder; the lower surface of the first pressure plate 42 away from the first rotary telescopic cylinder 41 can be designed as an arc shape as a preferred feature to adapt to the surface shape of the columnar protrusion at one end of the workpiece, thereby increasing the contact area and clamping force.

[0023] In this embodiment, as Figure 1 and Figure 2 The second stabilizing component 5 includes a second rotary telescopic cylinder 51 and a second pressure plate 52; the second rotary telescopic cylinder 51 is mounted on the clamp mounting plate 11; the second pressure plate 52 is located at the output end of the second rotary telescopic cylinder 51 and can rotate and move horizontally under the control of the second rotary telescopic cylinder 51.

[0024] Specifically, the second rotary telescopic cylinder 51 is preferably a rotary pressing cylinder; threaded holes can be machined on the second pressure plate 52, and the second pressure plate 52 can be connected to the output end of the second rotary telescopic cylinder 51 by screws.

[0025] In this embodiment, as Figure 1 and Figure 2 The second stabilizing component 5 also includes an auxiliary support plate 53; the auxiliary support plate 53 is disposed on the second rotary telescopic cylinder 51 and is used to provide auxiliary support for the workpiece.

[0026] Specifically, the shape of the upper end of the auxiliary support plate 53 can be customized according to the shape of the workpiece placed on it, and a buffer layer can be added to prevent rigid collisions from damaging the workpiece.

[0027] In this embodiment, as Figure 1 and Figure 2 The second pressure plate 52 has a rubber component on the side near the workpiece.

[0028] Specifically, the rubber parts on the second pressure plate 52 can have several textures to increase the clamping friction and prevent slippage.

[0029] In this embodiment, as Figure 1 and Figure 2 The upper clamp 23 is provided with a contour chuck 231; the contour chuck 231 is provided with a rubber part.

[0030] Specifically, an industrial adhesive can be applied to the contour chuck 231, and then the rubber parts can be smoothly attached to it for installation.

[0031] In this embodiment, as Figure 1 and Figure 2 The lower clamp 21 has a rubber component on the contact surface with the workpiece.

[0032] Specifically, the rubber parts on the contact surface between the lower clamp 21 and the workpiece can be designed to be arc-shaped to adapt to the curved surface of the workpiece.

[0033] The working principle of the above embodiments is as follows: This utility model discloses a positioning fixture for high-precision drilling of large long shafts. In use, the workpiece is placed on the lower fixture 21 and supported by the auxiliary support plate 53. The workpiece is manually rotated axially through two columnar protrusions on one end of the workpiece near the auxiliary support plate 53 until the columnar protrusion at the other end of the workpiece rests against the positioning post 32, at which point the workpiece is fully positioned. The first rotary telescopic cylinder 41 rotates and drives the first pressure plate 42 to move longitudinally, thereby stabilizing the columnar protrusions on the positioning post 32. The second rotary telescopic cylinder 51 rotates and drives the second pressure plate 52 to move horizontally, thereby stabilizing one end of the workpiece. The clamping cylinder 22 drives the upper fixture 23 to move downward, and the contour chuck 231 cooperates with the lower fixture 21 to complete the clamping of the workpiece.

[0034] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements can be made without departing from the principle of the present utility model, and these improvements should also be considered within the protection scope of the present utility model.

Claims

1. A positioning fixture for high-precision drilling of large long shafts, characterized in that: include: A base (1) and a set of clamp mounting plates (11) are arranged parallel to the base (1); A set of clamping components (2) are provided on the clamp mounting plate (11); The clamping assembly (2) includes a set of lower clamps (21), clamping cylinders (22) and upper clamps (23); The lower clamp (21) is located on both sides of the clamp mounting plate (11); the clamping cylinder (22) is located on the clamp mounting plate (11) and is located next to the lower clamp (21); the upper clamp (23) is located at the output end of the clamping cylinder (22) and is located above the lower clamp (21); the lower clamp (21) and the upper clamp (23) cooperate to clamp the workpiece; Positioning component (3), which is disposed on the base (1) and located beside the clamp mounting plate (11); The positioning component (3) includes a limiting platform (31) and a positioning column (32). The limiting platform (31) is located beside the clamp mounting plate (11); the positioning column (32) is erected on the side of the limiting platform (31) away from the clamp mounting plate (11); The first stabilizing component (4) is located beside the positioning post (32); The second stabilizing component (5) is located on the clamp mounting plate (11) away from the positioning assembly (3) and between the lower clamps (21).

2. The positioning fixture for high-precision drilling of large long shafts according to claim 1, characterized in that: The first stabilizing component (4) includes a first rotary telescopic cylinder (41) and a first pressure plate (42). The first rotary telescopic cylinder (41) is mounted on the base (1); the first pressure plate (42) is mounted on the output end of the first rotary telescopic cylinder (41) and can rotate and move longitudinally under the control of the first rotary telescopic cylinder (41).

3. The positioning fixture for high-precision drilling of large long shafts according to claim 1, characterized in that: The second stabilizing component (5) includes a second rotary telescopic cylinder (51) and a second pressure plate (52); The second rotary telescopic cylinder (51) is mounted on the clamp mounting plate (11); the second pressure plate (52) is located at the output end of the second rotary telescopic cylinder (51) and can be rotated and moved horizontally under the control of the second rotary telescopic cylinder (51).

4. The positioning fixture for high-precision drilling of large long shafts according to claim 3, characterized in that: The second stabilizing component (5) also includes an auxiliary support plate (53); The auxiliary support plate (53) is mounted on the second rotary telescopic cylinder (51) and is used to provide auxiliary support for the workpiece.

5. The positioning fixture for high-precision drilling of large long shafts according to claim 3, characterized in that: The second pressure plate (52) has a rubber part on the side near the workpiece.

6. The positioning fixture for high-precision drilling of large long shafts according to claim 1, characterized in that: The upper clamp (23) is provided with a contour chuck (231); the contour chuck (231) is provided with a rubber part.

7. The positioning fixture for high-precision drilling of large long shafts according to claim 1, characterized in that: The lower clamp (21) has a rubber component on the contact surface with the workpiece.

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