A device for rounding and chamfering the outside of a hose

Abstract

The utility model relates to the technical field of machining equipment, concretely relates to a device for machining the external fillet chamfer of a hose, comprising a frame, a clamping and rotating module and a grinding wheel dressing module. The clamping and rotating module clamps the hose by pushing the chuck clamping guide block with a clamping cylinder, and the hose is rotated together with the chuck by a hose rotating motor through a belt pulley mechanism. The grinding wheel dressing module is arranged on one side, and the first sliding table is driven by a compensation servo motor for accurate feeding, and then the second sliding table is driven by a push cylinder to drive the grinding wheel to feed at equal intervals. The utility model adopts the innovative processing mode of "workpiece rotation, grinding wheel linear feeding", uses concentric positioning tooling to ensure that the distance between the hose and the grinding wheel is constant, effectively overcomes the problem of poor processing accuracy caused by hose clamping eccentricity and inaccurate positioning in the traditional way, and greatly improves the processing accuracy and consistency of the external fillet chamfer of the hose.

Description

Technical Field

[0001] This utility model relates to the field of mechanical processing equipment technology, specifically to a device for chamfering the outer corners of hoses. Background Technology

[0002] In hydraulic and pneumatic systems, the ends of hoses require chamfering to facilitate connection and prevent scratching of seals. Traditional hose chamfering typically involves clamping the hose without rotation, while the grinding wheel rotates and revolves around the hose end. However, hoses generally lack high hardness and rigidity, making them prone to uneven force and eccentricity after clamping, leading to inaccurate positioning. This eccentricity is directly transmitted to the grinding wheel's orbital path, causing the relative distance between the grinding wheel and the hose end to constantly change during processing. This results in inconsistent chamfer depths, a rough surface, poor machining accuracy, and a low product yield.

[0003] To address the problems existing in the current technology, a chamfering device for the outer rounded corners of hoses is proposed. Utility Model Content

[0004] In view of the shortcomings of the prior art, the present invention provides a device for chamfering the outer rounded corners of hoses, which overcomes the shortcomings of the prior art and solves the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a device for chamfering the outer corners of a hose, comprising a frame, a clamping and rotating module and a grinding wheel module mounted on the frame; The clamping rotation module includes: The clamp has an internal hole for threading a flexible hose; The clamping drive component, preferably a clamping cylinder, has a clamping guide block connected to its output end, which is used to push the hose clamping chuck to deform and thus clamp the hose. The front end of the hose clamping chuck is provided with a concentric positioning fixture for making the hose concentric with the chuck. The concentric positioning fixture can ensure that the distance between the edge of the hose and the surface of the grinding wheel is consistent, so that the outer circle of the hose is ground flat and uniform. The rotary drive component, preferably a hose rotary motor, is connected to the clamp via a transmission mechanism to drive the clamp and the clamped hose to rotate together. The position of the chuck is fixed relative to the driven component of the transmission mechanism.

[0006] The grinding wheel dressing module is disposed on one side of the clamping and rotating module, and includes: The grinding wheel is driven by a grinding wheel motor; The first linear movement mechanism is driven by a compensated servo motor to move the grinding wheel, so as to adjust the feed position to ensure that the distance between the grinding wheel surface and the end of the flexible shaft remains consistent due to the wear of the grinding wheel's outer diameter. The second linear movement mechanism, driven by a propulsion cylinder, is used to drive the grinding wheel to feed at equal distances, so that the grinding wheel contacts the end of the rotating hose to complete the chamfering and grinding. The second linear motion mechanism is slidably mounted on the first linear motion mechanism.

[0007] As a preferred embodiment of this utility model, the transmission mechanism is a belt pulley mechanism, including a driving pulley connected to the output shaft of the flexible rotary motor, a driven pulley connected to the clamp, and a belt sleeved on the driving pulley and the driven pulley.

[0008] As a preferred embodiment of the present invention, the first linear movement mechanism includes a first slide table driven by the lead screw by the compensation servo motor, the second linear movement mechanism includes a second slide table driven by the propulsion cylinder, the second slide table is slidably disposed on the first slide table, and the grinding wheel motor is fixedly installed on the second slide table.

[0009] In a preferred embodiment of this invention, both the clamping drive component and the rotation drive component are fixed to the frame via mounting plates.

[0010] Compared with the prior art, the beneficial effects of this utility model are: 1. This utility model innovatively adopts a processing mode of "workpiece (hose) rotation, grinding wheel linear feed". The fixed connection between the chuck and the driven pulley ensures high stability of the hose's rotation center. During processing, the hose rotates around its clamped axis, while the grinding wheel only feeds linearly. The concentric positioning fixture (i.e., the chuck and the rotation mechanism) ensures that the distance between the hose's outer wall and the grinding point of the grinding wheel remains consistent circumferentially, fundamentally eliminating the problem of uneven chamfering caused by workpiece eccentricity.

[0011] 2. This device fully considers the stress characteristics of hoses, which are not very hard and are easily deformed. The stable rotary clamping method avoids additional radial disturbances to the hose caused by the complex grinding wheel revolution mechanism, making the processing smoother and the stress distribution more reasonable.

[0012] 3. A compensated servo motor is used to control the first slide for fine feeding, eliminating the problem of the gap between the grinding wheel and the hose caused by the wear of the grinding wheel and the reduction of its outer diameter. Then, the second slide is controlled by the propulsion cylinder for equal-distance feeding, realizing the automation and high-precision control of the processing process, ensuring the consistency of the chamfer dimensions, and greatly improving the product processing accuracy and production efficiency. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a top view of the overall structure of this utility model; Figure 3 This is a front view schematic diagram of the present utility model; Figure 4 For the present utility model Figure 3 Schematic diagram of the cross section at the middle FF point.

[0014] In the diagram: 1. Frame; 2. Clamping rotation module; 21. Hose clamping chuck; 22. Clamping cylinder; 23. Concentric positioning fixture; 24. Hose rotation motor; 25. Drive wheel; 26. Driven wheel; 27. Belt; 28. Chuck clamping guide block; 3. Grinding wheel dressing module; 31. Grinding wheel; 32. Grinding wheel motor; 33. Compensating servo motor; 34. First slide; 35. Propulsion cylinder; 36. Second slide; 4. Hose. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0016] Please see Figure 1-3 A chamfering device for the outer rounded corners of hoses includes a frame 1, a clamping and rotating module 2, and a grinding wheel module 3.

[0017] The clamping rotation module 2 is fixed to the frame 1 by a mounting plate. During operation, the hose 4 to be processed is first inserted into the hole of the hose clamping chuck 21. The concentric positioning fixture 23 ensures that the hose 4 is concentric with the chuck and that the distance between the hose edge and the grinding wheel surface is consistent, resulting in a smooth and uniform outer diameter of the hose 4. The clamping cylinder 22 is activated, and its piston rod pushes the chuck clamping guide block 28 forward, forcing the jaws of the hose clamping chuck 21 to retract, thus firmly clamping the hose 4. Subsequently, the hose rotation motor 24 is activated, driving the drive wheel 25 of the pulley mechanism to rotate, transmitting power to the driven wheel 26 via the belt 27. Since the hose clamping chuck 21 and the driven wheel 26 are relatively fixed by structures such as bearing seats, the driven wheel 26 drives the hose clamping chuck 21 and the clamped hose 4 to rotate at high speed together.

[0018] The grinding wheel dressing module 3 is located to the right of the clamping rotation module 2. The compensation servo motor 33 starts, driving the first slide 34 to a preset initial position via a precision lead screw. This position allows for adjustments during subsequent use to ensure a consistent feed position between the grinding wheel surface and the end of the flexible shaft, addressing any wear and shrinkage of the outer diameter. Then, the propulsion cylinder 35 actuates, pushing the second slide 36 forward equidistantly along the guide rail on the first slide 34. The grinding wheel motor 32 and grinding wheel 31, fixed to the second slide 36, move towards the end of the rotating flexible hose 4. The high-speed rotating grinding wheel 31 grinds the outer diameter of the uniformly rotating hose 4 end, forming a uniform and smooth outer chamfer.

[0019] After processing is completed, the compensation servo motor 33 retracts according to the set distance, and then the push cylinder 35 retracts, driving the grinding wheel 31 to retract; then the hose rotation motor 24 stops, the clamping cylinder 22 resets and releases the hose clamping chuck 21, and the processed hose 4 can be taken out.

[0020] Throughout the process, the rotation center of the hose 4 remains stable, and the feed path of the grinding wheel 31 is a straight line. The relative motion relationship between the two is simple and constant, thus ensuring that the processed outer chamfer has extremely high precision and consistency.

[0021] Finally, it should be noted that in the description of this utility model, the terms "vertical," "upper," "lower," "horizontal," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0022] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0023] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A chamfering device for the outer corners of hoses, comprising a frame (1), characterized in that: It also includes a clamping rotation module (2) and a grinding wheel dressing module (3) mounted on the frame (1); The clamping rotation module (2) includes: The hose clamping clamp (21) has a hole inside for inserting the hose (4); The clamping drive component has a clamping guide block (28) connected to its output end, which is used to push the hose clamping chuck (21) to deform and clamp the hose. The front end of the hose clamping chuck (21) is provided with a concentric positioning fixture (23) for making the hose concentric with the chuck. A rotary drive component is connected to the hose clamping chuck (21) via a transmission mechanism to drive the hose clamping chuck (21) and the clamped hose (4) to rotate. The grinding wheel dressing module (3) includes: The grinding wheel (31) is driven by the grinding wheel motor (32); The first linear motion mechanism is driven by a compensated servo motor (33) to move the grinding wheel (31); The second linear motion mechanism is driven by a propulsion cylinder (35) to feed the grinding wheel (31); The second linear motion mechanism is slidably mounted on the first linear motion mechanism.

2. The device for chamfering the outer corners of a hose according to claim 1, characterized in that: The transmission mechanism is a belt pulley mechanism, including a drive pulley (25) connected to the output shaft of the rotary drive component, a driven pulley (26) connected to the chuck (21), and a belt (27) sleeved on the drive pulley (25) and the driven pulley (26).

3. The chamfering device for the outer corners of a flexible hose according to claim 1, characterized in that: The first linear movement mechanism includes a first slide (34) driven by the lead screw of the compensation servo motor (33), and the second linear movement mechanism includes a second slide (36) driven by the propulsion cylinder (35). The second slide (36) is slidably disposed on the first slide (34), and the grinding wheel motor (32) is fixedly installed on the second slide (36).

4. The chamfering device for the outer corners of a hose according to claim 1, characterized in that: The clamping drive component is a clamping cylinder (22), and the rotation drive component is a hose rotation motor (24).

5. The chamfering device for the outer corners of a flexible hose according to claim 1, characterized in that: Both the clamping drive component and the rotation drive component are fixed to the frame (1) by a mounting plate.

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