Adjustable tool clamp for impeller machining

Abstract

The utility model discloses an adjustable work fixture for impeller machining, which relates to the technical field of impeller machining and comprises a fixture base plate, an impeller is arranged at the top of the fixture base plate, a clamping driving groove is formed in the bottom of the fixture base plate, a first servo motor is fixedly mounted on the front side of the fixture base plate, and a second servo motor is fixedly mounted on the rear side of the fixture base plate. An output shaft of the first servo motor penetrates into an inner cavity of the clamping driving groove and is fixedly provided with a right-hand and left-hand threaded rod, threaded walls with opposite threads are arranged on the front side and the rear side of the outer wall of the right-hand and left-hand threaded rod correspondingly, and first moving plates are installed on the outer walls of the two threaded walls in a threaded mode correspondingly. A second servo motor is fixedly installed on the left side of the clamp base plate. Through mutual cooperation of the positive and negative threaded rods, the arc-shaped clamping plates, the first threaded rods, the connecting rods, the second threaded rods and the clamping vertical plates, double clamping and positioning of an inner ring and an outer ring of a shaft hole of an impeller needing to be positioned and machined can be achieved, the lateral clamping and positioning stability is improved, and autorotation and slipping are avoided.

Description

Technical Field

[0001] This utility model relates to the field of impeller machining technology, specifically to an adjustable tooling fixture for impeller machining. Background Technology

[0002] An impeller can refer to a wheel disk with moving blades, which is a component of the rotor of an impulse steam turbine, or it can refer to the wheel disk and the rotating blades mounted on it. Impellers can be classified according to their shape and opening / closing status. When machining impellers, fixtures are needed to fix them in place.

[0003] Chinese patent document CN218657857U discloses an adjustable tooling fixture for impeller machining, including a base, a fixed column coaxially fixedly connected to the base, a connecting sleeve sleeved on the fixed column, multiple hinge rods hinged to the connecting sleeve, and an abutment post hinged to the lower end of each hinge rod. The abutment post is connected to the base via a sliding mechanism, and a pressing mechanism is provided on the connecting sleeve. This utility model has the characteristics of machining impellers of different sizes and ensuring machining results. The following problems exist with the existing technology:

[0004] The aforementioned literature mainly relies on four abutment posts to expand and clamp the inner wall of the impeller shaft hole. However, since the surface of the abutment posts is arc-shaped and the impeller lacks a clamp for downward positioning, the impeller is prone to self-rotation deviation or up-and-down wobbling during processing, making it difficult to guarantee processing stability. Utility Model Content

[0005] This invention provides an adjustable tooling fixture for impeller machining to solve the problems mentioned in the background art.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0007] An adjustable tooling fixture for impeller machining includes a fixture base plate. An impeller is disposed on the top of the fixture base plate, and a clamping drive groove is formed on the bottom of the fixture base plate. A servo motor is fixedly installed on the front side of the fixture base plate. The output shaft of the servo motor passes through the inner cavity of the clamping drive groove and is fixedly installed with a forward and reverse threaded rod. The outer walls of the forward and reverse threaded rods are respectively provided with threaded walls with opposite threads on the front and rear sides, and a movable plate is threadedly installed on the outer walls of both threaded walls. A servo motor is fixedly installed on the left side of the fixture base plate. The output shaft of the servo motor is passed through the inner cavity of the clamping drive groove and is fixedly installed with a threaded rod. A connecting rod is fixedly installed on the right end of the threaded rod, which is located above the forward and reverse threaded rod. A threaded rod is fixedly installed on the right end of the connecting rod. The threaded rods of the first and second threads are of the same length but with opposite threads. A movable plate is threadedly installed on the outer walls of both the threaded rods of the first and second threads.

[0008] A further improvement of this utility model is that: a limiting slide rod 1 is fixedly installed between the front and rear sides of the inner wall of the clamping drive groove, the limiting slide rod 1 is located below the positive and negative threaded rods, and both of the moving plates 1 are slidably connected to the limiting slide rod 1; a limiting slide rod 2 is fixedly installed between the left and right sides of the inner wall of the clamping drive groove, the limiting slide rod 2 is located in front of the threaded rod 1 and the threaded rod 2, and both of the moving plates 2 are slidably connected to the limiting slide rod 2.

[0009] A further improvement of the present invention is that: the top front and rear sides of the clamp base plate are provided with sliding grooves II that extend into the inner cavity of the clamping drive groove; the top of the two movable plates I are fixedly installed with movable columns I; the two movable columns I are slidably connected to the two sliding grooves II respectively; and the opposite surfaces of the two movable columns I are fixedly installed with arc-shaped clamping plates.

[0010] A further improvement of this utility model is that the bottoms of the two arc-shaped clamps are both in contact with the top of the clamp base plate, the two arc-shaped clamps are respectively located on the front and rear sides of the impeller, and rubber pads are fixedly bonded to the opposite surfaces of the two arc-shaped clamps.

[0011] A further improvement of the present invention is that: the top left and right sides of the clamp base plate are provided with sliding grooves that extend into the inner cavity of the clamping drive groove; the top ends of the two movable plates are fixedly installed with movable columns; the two movable columns are slidably connected to the two sliding grooves; the top ends of the two movable columns are fixedly installed with clamping plates; and the two clamping plates are located in the inner cavity of the impeller shaft hole.

[0012] A further improvement of this utility model is that: each of the two clamping uprights has a lifting groove extending through its top on its opposite side; a lifting screw is movably installed on the bottom of the inner wall of each of the two lifting grooves; a pressing control knob is fixedly installed on the top of each of the two lifting screws; a pressing moving plate is threaded onto the outer wall of each of the two lifting screws; and the two pressing moving plates are slidably connected to the two lifting grooves respectively.

[0013] A further improvement of this utility model is that rubber strips are fixedly bonded to the opposite sides of both clamping uprights, and the opposite ends of the two pressing moving plates extend to one side of the opposite sides of the two clamping uprights.

[0014] Due to the adoption of the above technical solution, the technological progress achieved by this utility model compared to the prior art is as follows:

[0015] 1. This utility model provides an adjustable tooling fixture for impeller machining. Through the mutual cooperation between the positive and negative threaded rods, the arc-shaped clamping plate, the first threaded rod, the connecting rod, the second threaded rod, and the clamping vertical plate, the impeller that needs to be positioned can achieve double clamping and positioning inside the shaft hole and the outer ring, thereby improving the stability of lateral clamping and positioning and avoiding slippage due to rotation.

[0016] 2. This utility model provides an adjustable tooling fixture for impeller processing. Through the cooperation of the lifting slide, lifting screw, pressing control knob and pressing moving plate, the clamping vertical plate in the clamping state can control the pressing moving plate to descend and press the top of the impeller. It can be adapted to impellers of different thicknesses and prevent the impeller from shaking up and down. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a bottom view of the fixture base plate of this utility model.

[0019] Figure 3 This is a schematic cross-sectional view of the clamp base plate of the present invention.

[0020] Figure 4 This is a schematic diagram of the top of the clamp base plate of this utility model.

[0021] Figure 5 This is a schematic cross-sectional view of the clamping upright plate of the present invention.

[0022] In the diagram: 1. Fixture base plate; 11. Clamping drive groove; 12. Servo motor one; 121. Positive and negative threaded rods; 122. Moving plate one; 1221. Moving column one; 1222. Arc-shaped clamping plate; 13. Limiting slide rod one; 14. Servo motor two; 141. Threaded rod one; 142. Connecting rod; 143. Threaded rod two; 144. Moving plate two; 1441. Moving column two; 15. Limiting slide rod two; 16. Slide groove one; 17. Slide groove two; 18. Clamping plate; 181. Lifting slide groove; 182. Lifting screw; 183. Press-down control knob; 184. Press-down moving plate; 2. Impeller. Detailed Implementation

[0023] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0024] like Figure 1 , Figure 2 , Figure 3As shown, this utility model provides an adjustable tooling fixture for impeller machining, including a fixture base plate 1. An impeller 2 is disposed on the top of the fixture base plate 1, and a clamping drive groove 11 is formed on the bottom of the fixture base plate 1. A servo motor 12 is fixedly installed on the front side of the fixture base plate 1. The output shaft of the servo motor 12 passes through the inner cavity of the clamping drive groove 11 and is fixedly installed with a positive and negative threaded rod 121. The front and rear sides of the outer wall of the positive and negative threaded rod 121 are respectively provided with threaded walls with opposite threads, and a movable plate 122 is threadedly installed on the outer wall of both threaded walls. A limiting slide rod 13 is fixedly installed between the front and rear sides of the inner wall of the clamping drive groove 11. The limiting slide rod 13 is located below the positive and negative threaded rod 121. Both movable plates 122 are slidably connected to the limiting slide rod 13. A servo motor is fixedly installed on the left side of the fixture base plate 1. The output shaft of servo motor 14 passes through the inner cavity of clamping drive groove 11 and is fixedly installed with threaded rod 141. A connecting rod 142 is fixedly installed at the right end of threaded rod 141. The connecting rod 142 is located above the positive and negative threaded rods 121. A threaded rod 143 is fixedly installed at the right end of connecting rod 142. Threaded rod 141 and threaded rod 143 have the same length but opposite threads. Moving plates 144 are threadedly installed on the outer walls of threaded rod 141 and threaded rod 143. Limiting slide rods 15 are fixedly installed between the left and right sides of the inner wall of clamping drive groove 11. Limiting slide rods 15 are located in front of threaded rod 141 and threaded rod 143. Both moving plates 144 are slidably connected to limiting slide rods 15. The connecting rod 142 can prevent the two moving plates 144 from contacting the positive and negative threaded rods 121.

[0025] When positioning the impeller 2 is required, the shaft hole of the impeller 2 can be placed on the top of the fixture base plate 1 through the two clamping upright plates 18. Then, the servo motor 12 is started, which controls the rotation of the positive and negative threaded rods 121. By using the threaded walls of the opposite threads on the front and rear sides of the outer wall of the positive and negative threaded rods 121 to connect with the threads of the moving plate 122, the two moving plates 122 can be controlled to move stably closer together by means of the sliding connection with the limiting slide rod 13. At the same time, by starting the servo motor 14, the connecting rod 142 can drive the opposite threaded rods 141 and 143 to rotate simultaneously, thereby controlling the moving plate 144, which is threaded on the outer wall of the threaded rods 141 and 143, to move in opposite directions.

[0026] like Figure 4As shown, the top front and rear sides of the clamp base plate 1 are provided with sliding grooves 17 that extend into the inner cavity of the clamping drive groove 11. Movable columns 1221 are fixedly installed on the top of each of the two movable plates 122. The two movable columns 1221 are slidably connected to the two sliding grooves 17. Arc-shaped clamping plates 1222 are fixedly installed on the opposite surfaces of the two movable columns 1221. The bottoms of the two arc-shaped clamping plates 1222 are in contact with the top of the clamp base plate 1. The two arc-shaped clamping plates 1222 are located on the impeller 2. On the front and rear sides, rubber pads are fixedly bonded to the opposite surfaces of the two arc-shaped clamping plates 1222. The top left and right sides of the clamping base plate 1 are provided with sliding grooves 16 that pass through the inner cavity of the clamping drive groove 11. The top of the two moving plates 144 are fixedly installed with moving columns 1441. The two moving columns 1441 are slidably connected to the two sliding grooves 16 respectively. The top of the two moving columns 1441 are fixedly installed with clamping plates 18. The two clamping plates 18 are located in the inner cavity of the shaft hole of the impeller 2.

[0027] When the moving plates 122 move closer together, the moving column 1221, which is slidably connected to the slide groove 17, can drive the two front and rear arc-shaped clamping plates 1222 to clamp and fix the front and rear sides of the impeller 2. The rubber pads can improve the anti-slip properties and prevent damage to the outer wall of the impeller 2 during clamping. At the same time, when the two moving plates 144 move in opposite directions, the two clamping plates 18 at their top can be driven to move in opposite directions in the inner ring of the impeller 2 by the sliding connection between the moving column 1441 and the slide groove 16, so that they can open and close, and achieve stable clamping of the impeller 2 in conjunction with the two front and rear arc-shaped clamping plates 1222.

[0028] like Figure 5 As shown, each of the two clamping upright plates 18 has a lifting groove 181 extending through its top on its opposite side. Lifting screws 182 are movably installed on the bottom of the inner wall of each of the two lifting grooves 181. A pressing control knob 183 is fixedly installed on the top of each of the two lifting screws 182. A pressing moving plate 184 is threadedly installed on the outer wall of each of the two lifting screws 182. The two pressing moving plates 184 are slidably connected to the two lifting grooves 181 respectively. Rubber strips are fixedly bonded to the opposite sides of each of the two clamping upright plates 18. The opposite ends of the two pressing moving plates 184 extend to one side of the opposite side of each of the two clamping upright plates 18.

[0029] When the rubber strips on the back of the two clamping plates 18 are pressed against the inner wall of the shaft hole of the impeller 2, the lifting screw 182 in the lifting groove 181 of the clamping plates 18 can be rotated by rotating the two pressing control knobs 183. The threaded connection between the pressing moving plate 184 and the lifting screw 182 can control the two pressing moving plates 184 to slowly descend until they press the top of the impeller 2, thereby pressing and fixing the impeller 2. When it is necessary to remove the impeller 2, it is only necessary to start the servo motor 14 to reverse the output shaft, which can control the two clamping plates 18 to move closer to each other, so that the impeller 2 can be pulled out and removed.

[0030] The working principle of this adjustable tooling fixture for impeller machining will be explained in detail below.

[0031] like Figure 1-5 As shown, when positioning the impeller 2, the shaft hole of the impeller 2 can be placed on top of the fixture base plate 1 through the two clamping uprights 18. Then, the servo motor 12 is started, which controls the rotation of the positive and negative threaded rods 121. The threaded walls of the opposite threads on the front and rear sides of the outer wall of the positive and negative threaded rods 121 are connected to the threads of the moving plate 122, which controls the two moving plates 122 to move stably closer together by means of the sliding connection with the limiting slide rod 13. At the same time, by starting the servo motor 14, the connecting rod 142 can drive the opposite threaded rods 141 and 143 to rotate simultaneously, thereby controlling the moving plate 144, which is threaded on the outer wall of the threaded rods 141 and 143, to move apart in opposite directions. When the moving plates 122 move closer together, the moving column 1221, which is slidably connected to the slide groove 17, can drive the two arc-shaped clamping plates 1222 to clamp and fix the front and rear sides of the impeller 2. During clamping, the rubber pads can be used to lift the impeller. The impeller 2 has high anti-slip properties and prevents damage to its outer wall. When the two movable plates 144 move in opposite directions, the sliding connection between the movable column 1441 and the slide groove 16 drives the two clamping plates 18 at their top to move in opposite directions within the inner ring of the impeller 2, thus enabling opening and clamping. This, combined with the two front and rear arc-shaped clamping plates 1222, achieves stable clamping of the impeller 2. When the rubber strips on the back of the two clamping plates 18 are pressed against the inner wall of the shaft hole of the impeller 2, the impeller 2 can be clamped by rotating the two plates. The downward control knob 183 drives the lifting screw 182 in the lifting slide 181 of the clamping plate 18 to rotate. With the threaded connection between the downward moving plate 184 and the lifting screw 182, the two downward moving plates 184 can be controlled to slowly descend until they press the top of the impeller 2, thereby achieving the pressing and fixing of the impeller 2. When it is necessary to remove the impeller 2, it is only necessary to start the servo motor 14 to reverse the output shaft, which can control the two clamping plates 18 to move closer to each other, so that the impeller 2 can be pulled upward and removed.

[0032] The present invention has been described in detail above. However, modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, any modifications or improvements that do not depart from the spirit of the present invention are within the protection scope of the present invention.

Claims

1. An adjustable tooling fixture for impeller machining, comprising a fixture base plate (1), characterized in that: An impeller (2) is provided on the top of the clamp base plate (1), and a clamping drive groove (11) is provided on the bottom of the clamp base plate (1). A servo motor (12) is fixedly installed on the front side of the clamp base plate (1). The output shaft of the servo motor (12) passes through the inner cavity of the clamping drive groove (11) and is fixedly installed with a positive and negative threaded rod (121). The front and rear sides of the outer wall of the positive and negative threaded rod (121) are respectively provided with threaded walls with opposite threads, and a moving plate (122) is threadedly installed on the outer wall of both of the threaded walls. A servo motor is fixedly installed on the left side of the clamp base plate (1). Second (14), the output shaft of the second servo motor (14) passes through the inner cavity of the clamping drive groove (11) and is fixedly installed with a threaded rod (141). A connecting rod (142) is fixedly installed at the right end of the threaded rod (141). The connecting rod (142) is located above the positive and negative threaded rods (121). A threaded rod (143) is fixedly installed at the right end of the connecting rod (142). The first threaded rod (141) and the second threaded rod (143) have the same length and opposite threads. A movable plate (144) is threadedly installed on the outer wall of both the first threaded rod (141) and the second threaded rod (143).

2. The adjustable tooling fixture for impeller machining according to claim 1, characterized in that: A limiting slide bar 1 (13) is fixedly installed between the front and rear sides of the inner wall of the clamping drive groove (11). The limiting slide bar 1 (13) is located below the positive and negative threaded rods (121). Both of the moving plates 1 (122) are slidably connected to the limiting slide bar 1 (13). A limiting slide bar 2 (15) is fixedly installed between the left and right sides of the inner wall of the clamping drive groove (11). The limiting slide bar 2 (15) is located in front of the threaded rods 1 (141) and 2 (143). Both of the moving plates 2 (144) are slidably connected to the limiting slide bar 2 (15).

3. The adjustable tooling fixture for impeller machining according to claim 1, characterized in that: The top front and rear sides of the clamp base plate (1) are provided with sliding grooves (17) that extend into the inner cavity of the clamping drive groove (11). The top of the two movable plates (122) are fixedly installed with movable columns (1221). The two movable columns (1221) are slidably connected to the two sliding grooves (17) respectively. The opposite surfaces of the two movable columns (1221) are fixedly installed with arc-shaped clamping plates (1222).

4. The adjustable tooling fixture for impeller machining according to claim 3, characterized in that: The bottoms of the two arc-shaped clamps (1222) are attached to the top of the clamp base plate (1). The two arc-shaped clamps (1222) are located on the front and rear sides of the impeller (2) respectively. Rubber pads are fixedly bonded to the opposite surfaces of the two arc-shaped clamps (1222).

5. The adjustable tooling fixture for impeller machining according to claim 1, characterized in that: The top left and right sides of the clamp base plate (1) are provided with sliding grooves (16) that pass through the inner cavity of the clamping drive groove (11). The top ends of the two movable plates (144) are fixedly installed with movable columns (1441). The two movable columns (1441) are slidably connected to the two sliding grooves (16) respectively. The top ends of the two movable columns (1441) are fixedly installed with clamping plates (18). The two clamping plates (18) are located in the inner cavity of the shaft hole of the impeller (2).

6. The adjustable tooling fixture for impeller machining according to claim 5, characterized in that: Each of the two clamping uprights (18) has a lifting groove (181) extending through its top on its opposite side. A lifting screw (182) is movably installed on the bottom of the inner wall of each of the two lifting grooves (181). A pressing control knob (183) is fixedly installed on the top of each of the two lifting screws (182). A pressing moving plate (184) is threaded onto the outer wall of each of the two lifting screws (182). The two pressing moving plates (184) are slidably connected to the two lifting grooves (181) respectively.

7. The adjustable tooling fixture for impeller machining according to claim 6, characterized in that: Rubber strips are fixedly bonded to the opposite sides of the two clamping uprights (18), and the opposite ends of the two pressing moving plates (184) extend to one side of the opposite sides of the two clamping uprights (18).

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