A lathe fixture for machining anti-friction plate parts

Abstract

The application provides a lathe clamp for processing anti-wear plate parts, and belongs to the technical field of part processing. The lathe clamp solves the problem that split anti-wear plate parts cannot be clamped, and improves processing efficiency. The lathe clamp comprises a first bolt (1), a nut (2), a first pressing plate (3), a base plate (5), a second bolt (6), a third bolt (7), a fourth bolt (8), a second pressing plate (9) and a second pad (10). The first bolt (1) passes through a lathe workbench, a pressing plate and the nut (2) from bottom to top. The first pressing plate (3) presses the base plate (5), so that the base plate is fixed on the lathe workbench. The base plate (5) is provided with a first through hole in the range of the inner and outer diameters of the part. The inner side of the inner diameter of the part is also provided with a second through hole, and the outer side of the part is also provided with a third through hole. The tooling adopts a combined clamping mode, which is convenient for positioning the part, improves processing efficiency, improves product quality and ensures product size.

Description

Technical Field

[0001] This utility model belongs to the technical field of parts processing, and relates to a lathe fixture for processing wear-resistant plate parts. Background Technology

[0002] The main shaft seal wear plate is a core component of the main shaft sealing system in a pumped storage power station. Its machining quality directly affects the safe operation and sealing performance of the power station. Among them, the segmented wear plate is a core component of the control loop in the turbine speed regulation system. Its unique segmented structure design has significant advantages in reducing friction loss, improving system stability, and extending equipment life. Because this part has a segmented structure (i.e., a circular ring is divided into multiple segments without any connecting method), special tooling is required. Sealing groove Such materials can only be processed using specially designed tooling and can only be machined on a lathe; milling machines cannot guarantee dimensional accuracy. Utility Model Content

[0003] (I) Purpose of the utility model

[0004] This utility model provides a lathe fixture for machining wear-resistant plate parts. In order to improve machining efficiency and ensure product quality, it provides a simple, easy-to-operate, and easy-to-machine surface and groove turning device. This device only needs to locate the center once and does not need to be located again. The parts can be directly installed on the tooling, which overcomes the constraints of equipment and improves machining efficiency.

[0005] This solves the problem of not being able to clamp segmented wear-resistant plate parts. During mass production, the fixture only needs to be aligned once during installation, and subsequent processing does not require repeated alignment and installation, thus improving processing efficiency.

[0006] (II) Technical Solution

[0007] To solve the above-mentioned technical problems, this utility model provides a lathe fixture for machining wear-resistant plate parts.

[0008] A lathe fixture for machining wear-resistant plate parts, characterized in that it includes a first bolt, a nut, a first pressure plate, a base plate, a second bolt, a third bolt, a fourth bolt, a second pressure plate, and a second pad; a T-slot is evenly distributed around the outer circumference of the base plate on the lathe worktable; the first pressure plate is located above the edge of the base plate; the first bolt passes through the lathe worktable, the pressure plate, and the nut from bottom to top; the first pressure plate presses down on the base plate, fixing it to the lathe worktable; a first through hole is formed around the base plate within the inner and outer diameter range of the part; a second through hole is also formed around the inner side of the part's inner diameter, and a third through hole is formed around the outer side of the part; the second bolt, the third bolt, the fourth bolt, the fifth bolt, the sixth bolt, the seventh bolt, the fifth bolt, the sixth bolt, the seventh bolt, the eighth bolt, the ninth bolt, the tenth bolt, the ellipse ... Three bolts pass through the first through hole on the part and the substrate to fix the part and the substrate; the bolts can pass through the second pressure plate and be screwed into the third through hole on the substrate. The second pressure plate and the substrate place the second pad, the second pad is at the same height as the outer side of the part, and the second pressure plate presses on the second pad and the outer side of the part; in addition, the bolts can also pass through the second pressure plate and be screwed into the second through hole on the substrate. The second pressure plate and the substrate place the second pad, the second pad is at the same height as the inner side of the part, and the second pressure plate presses on the second pad and the inner side of the part; the hole on the second pressure plate for the fourth bolt to pass through is an oblong hole, and the fourth bolt mates with the innermost or outermost oblong hole of the second pressure plate.

[0009] Furthermore, the first pad is located under the first pressure plate on the outside of the part.

[0010] Furthermore, the substrate is a disk, with its center coinciding with the center of the lathe worktable.

[0011] Furthermore, the second bolt passes through the non-locating threaded hole of the part, and the third bolt passes through the locating threaded hole of the part.

[0012] Furthermore, the length of the second pressure plate exceeds half the radial width of the part.

[0013] Furthermore, when the fourth bolt passes through the oblong hole of the second pressure plate, the second pressure plate presses against the outside of the sealing groove of the part.

[0014] (III) Beneficial Effects

[0015] This invention solves the technological challenge of ensuring the overall dimensions of segmented wear-resistant plates during machining. In mass production, the fixture only needs to be aligned once during installation, and subsequent machining does not require repeated alignment and installation, saving time and improving the efficiency of parts processing. It also solves the problem of not being able to guarantee the overall dimensions of segmented wear-resistant plates, solves the problem of narrow production openings, and saves and creates value. Attached Figure Description

[0016] This instruction manual contains five accompanying drawings.

[0017] Figure 1 Clamping diagram when mounting the substrate

[0018] Figure 2 Schematic diagram of the installation positions of the second and third bolts when clamping the workpiece.

[0019] Figure 3 Clamping diagram for machining internal holes

[0020] Figure 4 Clamping diagram for machining outer diameter

[0021] Figure 5 Clamping diagram for machining the upper sealing groove Detailed Implementation

[0022] To make the objectives, contents, and advantages of this utility model clearer, the specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples.

[0023] Based on the processing requirements and conditions of the parts, the design structure, and the reasonable positioning of workpieces, such as locating pins and bolts, ensure that the processing requirements of the parts are met.

[0024] The tooling adopts a modular clamping method, which facilitates the positioning of parts. After using the tooling, the product can be quickly clamped, improving processing efficiency, product quality, and ensuring product dimensions.

[0025] The fixture base plate is a round plate made of 45# steel. A large magnetic chuck can be used for hoisting. Before hoisting it onto the vertical lathe, the holes need to be machined on a milling machine according to the position of the holes in the workpiece. The corresponding holes need to be bored to ensure the positioning dimensions when clamping the workpiece.

[0026] A lathe fixture for machining wear-resistant plate parts comprises a first bolt 1, an (M36) nut 2, a first pressure plate 3, a first pad 4, a base plate 5, a second bolt 6, a third bolt 7, a fourth bolt 8, a second pressure plate 9, and a second pad 10.

[0027] like Figure 1 A T-shaped groove is evenly distributed around the outer circumference of the base plate 5 on the lathe worktable. The first pressure plate 3 is located above the edge of the base plate. The first bolt 1 has the lathe worktable, pressure plate, and nut from bottom to top. The base plate 5 is fixed to the lathe worktable by the first pressure plate 3 and the first bolt 1.

[0028] In use: 1. Clean the lathe worktable and hoist the base plate 5 onto the lathe worktable. Insert the first bolt 1 into the lathe T-slot, and install the first pad 4, the first pressure plate 3, and the M36 nut 2 in sequence and tighten them slightly. Align the center of the base plate 5 with the center of the worktable, and tighten the threads to fix it.

[0029] like Figure 2The substrate 5 has a first through hole within the diameter range of the inner and outer edges of the part, and a second bolt 6 and a third bolt 7 are assigned according to the positioning and fixing function of the part; there is also a second through hole on the inner side and a third through hole on the outer side.

[0030] In use: 2. Place the segmented wear-resistant plate part on the base plate 5 according to the position of the second bolt 6 hole, and tighten the second bolt 6 according to the corresponding hole position to fix the part. Except for the second bolt 6 hole, the other holes on the part are all equipped with the third bolt 7 and tightened to fix it. The second bolt 6 passes through the non-positioning threaded hole of the part, and the third bolt 7 passes through the positioning threaded hole of the part.

[0031] like Figure 3 The bolt passes through the second pressure plate 9 and is screwed into the outermost ring of the third through hole of the substrate. The second pressure plate 9 and the substrate are connected by a second pad 10. The second pad 10 is at the same height as the part. The second pressure plate 9 presses on the second pad 10 and the outer side of the part.

[0032] In use: 3. When machining the inner hole of the part, install and clamp the second pad 10, the second pressure plate 9, and the fourth bolt 8 in sequence, ensuring that the length of the pressure plate exceeds half of the part to ensure the stability of the part during machining. When machining the outer diameter of the part, similarly install and clamp the second pad 10, the second pressure plate 9, and the fourth bolt 8 in sequence, ensuring that the length of the pressure plate exceeds half of the part to ensure the stability of the part during machining.

[0033] like Figure 4 The bolt passes through the second pressure plate 9 and is screwed into the second through hole (innermost ring) of the substrate. The second pressure plate 9 and the substrate are connected by a second pad 10. The second pad 10 is at the same height as the part. The second pressure plate 9 presses on the second pad 10 and the inner side of the part.

[0034] like Figure 5 As shown, during use: 4. When machining the sealing groove of the part, install and clamp the second pad 10, the second pressure plate 9, and the fourth bolt 8 evenly inside and outside to ensure uniform force, and ensure that they are clamped outside the dimensions of the sealing groove to avoid collision during machining.

[0035] The hole on the second pressure plate 9 for the bolt to pass through is a slotted hole. The second pressure plate can be away from the part and press on the inner or outer edge of the part (the fourth bolt is matched with the innermost or outermost slotted hole of the second pressure plate 9).

[0036] In use: 5. When using this fixture on a vertical lathe, after alignment, use the clamping plate to fix it to the worktable. For mass production, there is no need to repeat the installation and alignment.

[0037] As can be seen from the above technical solution, this utility model has the following significant features:

[0038] (1) The problem of not being able to clamp the segmented wear-resistant plate parts has been solved.

[0039] (2) When processing in large batches, the fixture only needs to be aligned once during installation, and subsequent processing does not require repeated alignment and installation, which improves processing efficiency.

[0040] The main shaft seal wear plate is a core component of the main shaft sealing system in a pumped storage power station. Its machining quality directly affects the safe operation and sealing performance of the power station. Among them, the segmented wear plate is a core component of the control loop in the turbine speed regulation system. Its unique segmented structure design has significant advantages in reducing friction loss, improving system stability, and extending equipment life. Because this part has a segmented structure (i.e., a circular ring is divided into multiple segments without any connecting method), special tooling is required. Sealing groove Such items can only be processed using specially designed tooling and can only be processed on a lathe; milling machines cannot guarantee dimensional accuracy.

[0041] The present invention aims to overcome the shortcomings of the existing technology and provide a device with a simple structure and easy operation for processing segmented wear-resistant plates.

[0042] 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 and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A lathe fixture for machining wear-resistant plate parts, characterized in that, Includes a first bolt (1), a nut (2), a first pressure plate (3), a base plate (5), a second bolt (6), a third bolt (7), a fourth bolt (8), a second pressure plate (9), and a second pad (10); A T-shaped groove is evenly distributed around the outer circumference of the base plate (5) on the lathe worktable. The first pressure plate (3) is located above the edge of the base plate. The first bolt (1) passes through the lathe worktable, the pressure plate, and the nut (2) from bottom to top respectively. The first pressure plate (3) presses down on the base plate (5) to fix the base plate on the lathe worktable. The substrate (5) has a first through hole within the inner and outer diameter range of the part; the inner side of the inner diameter of the part also has a second through hole, and the outer side of the part also has a third through hole. The second bolt (6) and the third bolt (7) pass through the first through hole on the part and the substrate (5) to fix the part and the substrate (5); The bolt can pass through the second pressure plate (9) and be screwed into the third through hole of the substrate. The second pressure plate (9) and the substrate place the second pad (10). The second pad (10) is at the same height as the outer side of the part. The second pressure plate (9) presses on the second pad (10) and the outer side of the part. In addition, the bolt can also be screwed into the second through hole of the substrate through the second pressure plate (9), the second pressure plate (9) and the substrate place the second pad (10), the second pad (10) is at the same height as the inner side of the part, and the second pressure plate (9) presses on the second pad (10) and the inner side of the part. The hole on the second pressure plate (9) for the fourth bolt to pass through is a waist-shaped hole, and the fourth bolt is engaged with the innermost or outermost side of the waist-shaped hole of the second pressure plate (9).

2. A lathe fixture for machining wear-resistant plate parts according to claim 1, characterized in that, The first pad (4) is located under the first pressure plate (3) on the outside of the part.

3. A lathe fixture for machining wear-resistant plate parts according to claim 1, characterized in that, The substrate (5) is a disk, and its center coincides with the center of the lathe worktable.

4. A lathe fixture for machining wear-resistant plate parts according to claim 1, characterized in that, The second bolt (6) passes through the non-locating threaded hole of the part, and the third bolt (7) passes through the locating threaded hole of the part.

5. A lathe fixture for machining wear-resistant plate parts according to claim 1, characterized in that, The length of the second pressure plate exceeds half the radial width of the part.

6. A lathe fixture for machining wear-resistant plate parts according to claim 1, characterized in that, When the fourth bolt passes through the waist-shaped hole of the second pressure plate (9), the second pressure plate presses against the sealing groove of the part.

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