A pneumatic inclined hole fixture for gear machining

Abstract

This invention relates to the field of fixture technology and discloses a pneumatic inclined hole fixture for gear machining, comprising: a base plate, an inclined plate fixedly mounted on the top of the base plate, and a pad fixedly mounted on the surface of the inclined plate. This invention relies on the cooperation of a limiting ring, a fixing component, a pad, and an anti-slip component to stably position the gear shaft to be machined, ensuring drilling accuracy. Furthermore, even when the lower part of the inner wall of the limiting ring is worn down by the shaft over a long period, preventing proper support for the shaft, the invention automatically switches and adjusts the limiting ring, ensuring that the unworn area contacts the lower part of the shaft, providing support and preventing the shaft from being squeezed and bent during drilling. The switching and adjustment of the limiting ring ensures full utilization of the entire ring, avoiding waste. Moreover, the driving component and the limiting ring can be separated during replacement, allowing for easy replacement of the limiting ring.

Description

Technical Field

[0001] This invention belongs to the field of fixture technology, and specifically relates to a pneumatic inclined hole fixture for gear machining. Background Technology

[0002] A gear is a mechanical part with teeth on its circumference. They usually come in groups and are used to transmit rotation from the shaft of one gear to the shaft of another gear.

[0003] When machining gear shafts, it is necessary to drill oblique holes on their surfaces. This process requires the use of a fixture. When using existing fixtures to fix the shaft, especially for long shafts, it is often only possible to fix one end of the shaft. Since the other end of the shaft is not restricted, the unrestricted end of the shaft is prone to wobbling during drilling, which affects the drilling accuracy.

[0004] Therefore, it is necessary to invent a pneumatic inclined hole fixture for gear machining to solve the above problems. Summary of the Invention

[0005] To address the aforementioned problems, this invention provides a pneumatic inclined hole fixture for gear machining, thereby resolving the issues raised in the background section.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A pneumatic inclined hole fixture for gear machining includes: a base plate, an inclined plate fixedly mounted on the top of the base plate, a pad fixedly mounted on the surface of the inclined plate, a fixing component for fixing one end of the gear shaft to be machined on the inclined plate, and a limiting component for limiting the gear shaft to be machined on the pad.

[0008] The limiting component includes: a mounting bracket, a limiting ring, a retaining ring, a column, a drive component, and an anti-slip component;

[0009] The pad and the inclined plate have connecting threaded holes. The column is threaded into the threaded holes. The mounting bracket is fixedly installed on the top of the column. The limiting ring is located inside the mounting bracket. The retaining ring is fixedly installed inside the mounting bracket. The retaining ring abuts against the limiting ring. The driving component can rotate and adjust the limiting ring after the lower part of the inner wall of the limiting ring is worn. The anti-slip component can prevent the gear shaft to be processed from sliding down the pad.

[0010] Furthermore, the drive assembly includes: a rotating roller, a rubber ring, a motor, a distance sensor, and a controller;

[0011] The mounting frame and column have communicating grooves. The motor is installed in the grooves. The rotating roller is fixedly installed at the output shaft end of the motor. The rubber ring is fixedly sleeved on the outside of the rotating roller. The rubber ring abuts against the limiting ring. The lower inner wall of the mounting frame has an installation groove. The distance sensor is installed in the installation groove. The controller is installed at the bottom of the column. The distance sensor can cooperate with the controller to control the motor to start or stop.

[0012] Furthermore, when the gear shaft passes through the limiting ring and one end is located on the surface of the pad, the limiting ring and the pad can support the gear shaft, keeping the gear shaft parallel to the pad.

[0013] Furthermore, a sliding groove is provided on one side of the inner wall of the groove, and a slider is slidably installed in the sliding groove. The slider is fixedly connected to the motor, and an iron rod is fixedly installed at the bottom of the slider. A cavity communicating with the sliding groove is provided inside the column, and an electromagnet is provided in the cavity. One end of the iron rod extends into the cavity, and a spring is sleeved on the outside of the iron rod.

[0014] Furthermore, the anti-slip component includes: a baffle plate, the baffle plate being disposed on the surface of the pad away from the mounting bracket, the surface of the pad having a movable groove, a movable block cooperating with the movable groove being fixedly installed at the bottom of the baffle plate, and a positioning rod being threadedly connected to the top of the movable block.

[0015] Furthermore, the baffle and the limiting ring are arranged parallel to each other on opposite sides.

[0016] Furthermore, the retaining ring is equidistantly mounted with ball bearings on one side near the limiting ring.

[0017] Furthermore, the fixing assembly includes: a rotary clamping cylinder, a connecting plate, a lead screw, and a clamping plate;

[0018] The rotary clamping cylinder is fixedly mounted on the inclined plate, the connecting plate is fixedly mounted on the end of the rotary clamping cylinder, the lead screw is threadedly connected to the connecting plate, and the clamping plate is fixedly mounted on the end of the lead screw near the pad.

[0019] The technical effects and advantages of this invention are as follows:

[0020] 1. This invention relies on the cooperation of a limiting ring, a fixing component, a pad, and an anti-slip component to stably position the gear shaft to be processed, ensuring drilling accuracy. Furthermore, even when the lower part of the inner wall of the limiting ring is worn down by the shaft over a long period, preventing proper support, the limiting ring can automatically switch and adjust, ensuring that the unworn area contacts the lower part of the shaft, thus providing support. During subsequent drilling, one end of the shaft is supported by the pad, and a portion is supported by the limiting ring, preventing the shaft from being squeezed and bent during drilling, thereby ensuring smooth processing.

[0021] 2. This invention enables the full utilization of the limit ring by switching and adjusting the limit ring, avoiding waste, and allows for the separation of the drive component and the limit ring during replacement, making it easy to replace the limit ring. Attached Figure Description

[0022] Figure 1 A schematic diagram of the structure of a pneumatic inclined hole fixture for gear machining according to an embodiment of the present invention is shown;

[0023] Figure 2 A cross-sectional view of a pneumatic inclined hole fixture for gear machining according to an embodiment of the present invention is shown.

[0024] Figure 3 An embodiment of the present invention is shown. Figure 2 Enlarged structural diagram at point A in the middle;

[0025] Figure 4 A schematic diagram of the structure of the pad according to an embodiment of the present invention is shown;

[0026] Figure 5 A schematic diagram of the structure of the limiting component according to an embodiment of the present invention is shown;

[0027] Figure 6 A schematic diagram of a portion of the structure of an embodiment of the present invention is shown;

[0028] Figure 7 A schematic diagram of the retaining ring according to an embodiment of the present invention is shown;

[0029] In the diagram: 1. Base plate; 2. Pad plate; 3. Rotary clamping cylinder; 4. Connecting plate; 5. Lead screw; 6. Clamping plate; 7. Mounting bracket; 8. Limiting ring; 9. Retaining ring; 10. Rotary roller; 11. Rubber ring; 12. Motor; 13. Distance sensor; 14. Controller; 15. Slider; 16. Iron rod; 17. Electromagnet; 18. Baffle plate; 19. Moving block; 20. Positioning rod; 21. Ball bearing; 22. Inclined plate; 23. Column. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below in conjunction with the embodiments.

[0031] This invention provides a pneumatic inclined hole fixture for gear machining, such as... Figures 1 to 7 As shown, it includes: a base plate 1, an inclined plate 22 fixedly installed on the top of the base plate 1, a pad 2 fixedly installed on the surface of the inclined plate 22, a fixing component for fixing one end of the gear shaft to be processed on the inclined plate 22, and a limiting component for limiting the gear shaft to be processed on the pad 2.

[0032] The limiting components include: mounting bracket 7, limiting ring 8, retaining ring 9, column 23, drive assembly, and anti-slip assembly;

[0033] The pad 2 and the inclined plate 22 are provided with connecting threaded holes. The column 23 is threaded into the threaded hole. The mounting bracket 7 is fixedly installed on the top of the column 23. The limiting ring 8 is set inside the mounting bracket 7. The retaining ring 9 is fixedly installed inside the mounting bracket 7. The retaining ring 9 abuts against the limiting ring 8. The drive component can rotate and adjust the limiting ring 8 after the lower part of the inner wall of the limiting ring 8 is worn. The anti-slip component can prevent the gear shaft to be processed from sliding down the pad 2.

[0034] In use, the gear shaft to be processed is passed through the limiting ring 8, and then one end of the gear shaft is placed on the surface of the pad 2. The anti-slip component prevents the gear shaft from slipping, and then the fixing component fixes one end of the gear shaft to be processed. At this time, the surface of the shaft is in contact with the lower part of the inner wall of the limiting ring 8. Since the inner wall of the limiting ring 8 is arc-shaped, it can restrict the shaft so that the shaft will not shift to the left or right, ensuring the stability during drilling.

[0035] After the shaft passes through the limiting ring 8, it slides along the lower part of the inner wall of the limiting ring 8. Over time, this will cause severe wear on the lower part of the inner wall of the limiting ring 8. If the operator does not observe this problem when the lower part of the inner wall of the limiting ring 8 is severely worn, and one end of the shaft is on the surface of the pad 2, while a part of the shaft is inside the limiting ring 8, the part of the shaft inside the limiting ring 8 will descend under the action of gravity and come into contact with the worn part of the inner wall of the limiting ring 8. This will prevent the entire shaft from remaining parallel to the pad 2. When the fixing assembly fixes one end of the shaft, it will lift up the part of the shaft that is in contact with the worn part of the inner wall of the limiting ring 8. After the shaft is fixed, the part of the shaft inside the limiting ring 8 is in a suspended state. The part of the shaft inside the limiting ring 8 is not supported. When drilling the shaft later, the drill bit will squeeze the shaft, making it easy for the shaft to bend.

[0036] Therefore, when the inner wall of the limiting ring 8 is severely worn and the workers are unaware of this, after the shaft is placed through the limiting ring 8, a portion of the shaft inside the limiting ring 8 will descend under the influence of gravity until it comes into contact with the worn area on the inner wall of the limiting ring 8. This prevents the entire shaft from remaining parallel to the pad 2. Due to the descent of the portion of the shaft inside the limiting ring 8, the trigger drive assembly drives the limiting ring 8 to rotate, causing the worn area below the inner wall of the limiting ring 8 to separate from the shaft. This allows the unworn area to contact the lower part of the shaft, providing support for the shaft. During subsequent drilling, one end of the shaft is supported by the pad 2, and a portion is supported by the limiting ring 8, preventing the shaft from being squeezed and bent during drilling, thus ensuring smooth processing.

[0037] like Figure 2 and Figure 3 As shown, the drive assembly includes: a rotating roller 10, a rubber ring 11, a motor 12, a distance sensor 13, and a controller 14;

[0038] The mounting bracket 7 and the column 23 have communicating grooves. The motor 12 is installed in the groove. The rotating roller 10 is fixedly installed at the output shaft end of the motor 12. The rubber ring 11 is fixedly sleeved on the outside of the rotating roller 10. The rubber ring 11 abuts against the limiting ring 8. The lower inner wall of the mounting bracket 7 has an installation groove. The distance sensor 13 is installed in the installation groove. The controller 14 is installed at the bottom of the column 23. The controller 14 is a PLC controller. The distance sensor 13 can cooperate with the controller 14 to control the motor 12 to start or stop.

[0039] When the limiting ring 8 is in normal use, part of the shaft is supported by the inner wall of the limiting ring 8, and the other end is supported by the pad 2. The shaft and the pad 2 are parallel. At this time, the distance between the distance sensor 13 and the surface of the shaft is the normal set value. When the lower part of the inner wall of the limiting ring 8 is worn, the part of the shaft inside the limiting ring 8 drops. The distance sensor 13 detects that the distance between it and the shaft has shortened and is lower than the set value. At this time, the distance sensor 13, together with the controller 14, drives the motor 12 to start. The output shaft of the motor 12 drives the roller 10 and the rubber ring 11 to rotate. Relying on the friction between the rubber ring 11 and the limiting ring 8, the limiting ring 8 is driven to rotate. As the limiting ring 8 rotates, its normal area and the severely worn area switch. When the normal area is below the shaft, the shaft is supported and the shaft and the pad 2 are parallel. The distance sensor 13 detects that the distance between it and the shaft has returned to the set value. The controller 14 then turns off the motor 12, thus completing the adjustment of the limiting ring 8.

[0040] Furthermore, by rotating and adjusting the limit ring 8, the entire limit ring 8 can be fully utilized. When the inner wall of the entire limit ring 8 is severely worn and unusable, the limit ring 8 can be removed and replaced.

[0041] When the limiting ring 8 is not severely worn, when the gear shaft passes through the limiting ring 8 and one end is located on the surface of the pad 2, the limiting ring 8 and the pad 2 can support the gear shaft, keeping the gear shaft parallel to the pad 2.

[0042] like Figure 3 As shown, a groove is provided on one side of the inner wall of the groove, and a slider 15 is slidably installed in the groove. The slider 15 is fixedly connected to the motor 12. An iron rod 16 is fixedly installed at the bottom of the slider 15. A cavity communicating with the groove is provided inside the column 23. An electromagnet 17 is provided in the cavity. One end of the iron rod 16 extends into the cavity, and a spring is sleeved on the outside of the iron rod 16.

[0043] When the inner wall of the entire limiting ring 8 is severely worn and unusable, the electromagnet 17 is activated to make it magnetic, thereby attracting the iron rod 16 and causing the slider 15 to descend. The slider 15 compresses the spring and deforms it. As the slider 15 descends, it also causes the motor 12, the rotating roller 10, and the rubber ring 11 to descend, so that the rubber ring 11 is removed from the limiting ring 8. At this time, the limiting ring 8 can be easily removed and replaced. After replacement, the electromagnet 17 is de-energized to make it lose its magnetism. At this time, the spring returns to its original position and the slider 15 returns to its original position. Conversely, the rubber ring 11 will come into contact with the limiting ring 8, thus realizing the replacement of the limiting ring 8.

[0044] like Figure 4 As shown, the anti-slip assembly includes: a baffle 18, which is disposed on the side of the surface of the pad 2 away from the mounting bracket 7. The surface of the pad 2 is provided with a moving groove. A moving block 19 that cooperates with the moving groove is fixedly installed at the bottom of the baffle 18. A positioning rod 20 is threadedly connected to the top of the moving block 19.

[0045] The baffle 18 can block one end of the shaft that passes through the limiting ring 8, preventing the shaft from sliding down. Rotating the positioning rod 20 forward causes its end to leave the bottom wall of the moving groove. At this time, the position of the baffle 18 can be adjusted to meet the usage requirements. After the adjustment is completed, the positioning rod 20 is reversed so that its end abuts against the bottom wall of the moving groove. Relying on the friction between the positioning rod 20 and the bottom wall of the moving groove, the position of the moving block 19 can be fixed, thereby fixing the position of the baffle 18.

[0046] like Figure 4 As shown, the baffle 18 and the limiting ring 8 are arranged parallel to each other on opposite sides.

[0047] This ensures that after the shaft passes through the limiting ring 8, one end of it can abut against the baffle 18, preventing the entire shaft from tilting.

[0048] like Figure 3 and Figure 7 As shown, the retaining ring 9 is equidistantly mounted with ball bearings 21 on one side near the limiting ring 8.

[0049] Under the action of gravity, the limiting ring 8 abuts against the ball bearing 21 on the retaining ring 9. The ball bearing 21 reduces friction when adjusting the limiting ring 8, allowing the limiting ring 8 to be adjusted more smoothly.

[0050] like Figure 1 As shown, the fixing assembly includes: a rotary clamping cylinder 3, a connecting plate 4, a lead screw 5, and a clamping plate 6;

[0051] The rotary clamping cylinder 3 is fixedly installed on the inclined plate 22, the connecting plate 4 is fixedly installed on the end of the rotary clamping cylinder 3, the lead screw 5 is threadedly connected to the connecting plate 4, and the clamping plate 6 is fixedly installed on the end of the lead screw 5 near the pad 2.

[0052] Start the rotary clamping cylinder 3 to drive the connecting plate 4, lead screw 5, and clamping plate 6 close to the shaft, and clamp the shaft with the pad 2. The height of the baffle 18 is lower than the diameter of the shaft, so that the baffle 18 will not obstruct the clamping plate 6 from clamping the shaft. Rotate the lead screw 5 to make it move along the connecting plate 4 with the clamping plate 6, so that the position of the clamping plate 6 can be adjusted.

[0053] Working principle: In use, the gear shaft to be processed is passed through the limiting ring 8, and then one end of the gear shaft is placed on the surface of the pad 2. The anti-slip component prevents the gear shaft from slipping. Then, the rotary clamping cylinder 3 is activated to drive the connecting plate 4, lead screw 5, and clamping plate 6 to approach the shaft. Together with the pad 2, the shaft is clamped and fixed at one end of the gear shaft to be processed. At this time, the surface of the shaft is in contact with the lower part of the inner wall of the limiting ring 8. Since the inner wall of the limiting ring 8 is arc-shaped, it can restrict the shaft and prevent the shaft from shifting to the left or right, thus ensuring the stability during drilling.

[0054] After the shaft passes through the limiting ring 8, it slides along the lower part of the inner wall of the limiting ring 8. Over time, this will cause severe wear on the lower part of the inner wall of the limiting ring 8. If the operator does not observe this problem when the lower part of the inner wall of the limiting ring 8 is severely worn, and one end of the shaft is on the surface of the pad 2, while a part of the shaft is inside the limiting ring 8, the part of the shaft inside the limiting ring 8 will descend under the action of gravity and come into contact with the worn part of the inner wall of the limiting ring 8. This will prevent the entire shaft from remaining parallel to the pad 2. When the clamping plate 6 and the pad 2 clamp the shaft, the part of the shaft that comes into contact with the worn part of the inner wall of the limiting ring 8 will be lifted up. After the shaft is fixed, the part of the shaft inside the limiting ring 8 will be suspended in the air. The part of the shaft inside the limiting ring 8 will not be supported. When drilling the shaft later, the drill bit will squeeze the shaft, making it easy for the shaft to bend.

[0055] When the limiting ring 8 is in normal use, part of the shaft is supported by the inner wall of the limiting ring 8, and the other end is supported by the pad 2. The shaft and the pad 2 are parallel. At this time, the distance between the distance sensor 13 and the surface of the shaft is the normal set value.

[0056] Therefore, when the inner wall of the limiting ring 8 is severely worn and the staff is unaware of this, after the shaft is placed through the limiting ring 8, under the action of gravity, a portion of the shaft inside the limiting ring 8 will descend and come into contact with the worn area of ​​the inner wall of the limiting ring 8. This prevents the entire shaft from remaining parallel to the pad 2. Due to the descent of the portion of the shaft inside the limiting ring 8, the distance sensor 13 detects that the distance between it and the shaft has shortened and is below the set value. At this time, the distance sensor 13, in conjunction with the controller 14, drives the motor 12 to start. The output shaft of the motor 12 rotates the roller 10 and the rubber ring 11. Relying on the friction between the rubber ring 11 and the limiting ring 8, the limiting ring 8 is driven to rotate. As the limiting ring 8 rotates, its normal area and severely worn area switch. When the normal area is located below the shaft, the shaft is supported and parallel to the pad 2. The distance sensor 13 detects that the distance between it and the shaft has returned to the set value, and the controller 14 shuts off the motor 12. This completes the adjustment of the limit ring 8, so that the unworn area contacts the lower part of the shaft, providing support for the shaft. During subsequent drilling, one end of the shaft is supported by the pad 2, and part is supported by the limit ring 8, preventing the shaft from being squeezed and bent during drilling, thus ensuring smooth processing. Furthermore, by rotating and adjusting the limit ring 8, the entire limit ring 8 can be fully utilized. When the inner wall of the entire limit ring 8 is severely worn and unusable, the limit ring 8 can be removed and replaced.

[0057] When the inner wall of the entire limiting ring 8 is severely worn and unusable, the electromagnet 17 is activated to make it magnetic, thereby attracting the iron rod 16 and causing the slider 15 to descend. The slider 15 compresses the spring and deforms it. As the slider 15 descends, it also causes the motor 12, the rotating roller 10, and the rubber ring 11 to descend, so that the rubber ring 11 is removed from the limiting ring 8. At this time, the limiting ring 8 can be easily removed and replaced. After replacement, the electromagnet 17 is de-energized to make it lose its magnetism. At this time, the spring returns to its original position and the slider 15 returns to its original position. Conversely, the rubber ring 11 will come into contact with the limiting ring 8, thus realizing the replacement of the limiting ring 8.

[0058] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it.

Claims

1. A pneumatic inclined hole clamp for gear machining, characterized by, Include: The bottom plate (1), the top of the bottom plate (1) is fixedly installed with the inclined plate (22), the surface of the inclined plate (22) is fixedly installed with the backing plate (2), the inclined plate (22) is equipped with the fixed component for fixing the end of the gear shaft to be processed, the backing plate (2) is equipped with the limiting component for limiting the gear shaft to be processed;The limiting component includes: mounting bracket (7), limit ring (8), baffle ring (9), stand (23), drive assembly, anti-downslide assembly;The backing plate (2) and the inclined plate (22) are provided with a threaded hole in communication, the stand (23) is threadedly connected in the threaded hole, the mounting bracket (7) is fixedly installed on the top of the stand (23), the limit ring (8) is arranged in the inside of the mounting bracket (7), the baffle ring (9) is fixedly installed in the inside of the mounting bracket (7), the baffle ring (9) is in contact with the limit ring (8), the drive assembly can rotate and adjust the limit ring (8) after the inner wall of the limit ring (8) is worn, the anti-downslide assembly can prevent the gear shaft to be processed from sliding down along the backing plate (2); The drive assembly includes: rotating roller (10), rubber ring (11), motor (12), distance sensor (13), controller (14);The mounting bracket (7) and the stand (23) are provided with a recess in communication, the motor (12) is arranged in the recess, the rotating roller (10) is fixedly installed on the output shaft end of the motor (12), the rubber ring (11) is fixedly sleeved on the outside of the rotating roller (10), the rubber ring (11) is in contact with the limit ring (8), the lower part of the inner wall of the mounting bracket (7) is provided with a mounting groove, the distance sensor (13) is arranged in the mounting groove, the controller (14) is arranged at the bottom of the stand (23), the distance sensor (13) can control the motor (12) to start or stop in cooperation with the controller (14); The fixed component includes: rotary clamping air cylinder (3), connecting plate (4), lead screw (5), clamping plate (6);The rotary clamping air cylinder (3) is fixedly installed on the inclined plate (22), the connecting plate (4) is fixedly installed on the end of the rotary clamping air cylinder (3), the lead screw (5) is threadedly connected on the connecting plate (4), and the clamping plate (6) is fixedly installed on one end of the lead screw (5) close to the backing plate (2).

2. The air-operated inclined hole clamp for gear machining according to claim 1, characterized in that: When the gear shaft passes through the limit ring (8) and one end is located on the surface of the backing plate (2), the gear shaft can be supported by the limit ring (8) and the backing plate (2), so that the gear shaft remains parallel to the backing plate (2).

3. The air-operated inclined hole clamp for gear machining according to claim 2, characterized in that: The inner wall of one side of the recess is provided with a sliding groove, a sliding block (15) is slidably installed in the sliding groove, the sliding block (15) is fixedly connected with the motor (12), an iron rod (16) is fixedly installed at the bottom of the sliding block (15), a cavity in communication with the sliding groove is formed in the inside of the stand (23), an electromagnet (17) is arranged in the cavity, one end of the iron rod (16) extends into the cavity, and a spring is sleeved on the outside of the iron rod (16).

4. The air-operated inclined hole clamp for gear machining according to claim 3, characterized in that: The anti-sliding assembly comprises a baffle (18) arranged on the side of the surface of a cushion plate (2) away from a mounting frame (7), the surface of the cushion plate (2) is provided with a moving groove, the bottom of the baffle (18) is fixedly provided with a moving block (19) matched with the moving groove, and the top of the moving block (19) is threadedly connected with a positioning rod (20).

5. The air-operated inclined hole clamp for gear machining according to claim 4, characterized in that: The baffle (18) and the opposite side of the limiting ring (8) are arranged in parallel.

6. The air-operated inclined hole clamp for gear machining according to claim 5, characterized in that: The baffle ring (9) is rotatably installed with a plurality of rolling balls (21) equidistantly around the side close to the limiting ring (8).

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