Flexible grinding head structure

Abstract

The utility model relates to the technical field of machining, in particular to a flexible grinding head structure, which comprises a flexible sleeve, a rear grip detachably connected with one end of the flexible sleeve, a front grip slidably sleeved on the flexible sleeve, a grinding head for grinding burrs, and a motor mounted in the rear grip and used for driving the grinding head to rotate. A flexible steel wire for transmission is fixedly connected between the grinding head and the output end of the motor; the front grip comprises a shell slidably arranged on the flexible sleeve in a sleeving mode and an abutting joint inserted into the shell in the radial direction, the end, close to the flexible sleeve, of the abutting joint can make contact with the outer surface of the flexible sleeve, and a spring used for resetting the abutting joint is fixedly installed at the end, away from the flexible sleeve, of the abutting joint. According to the scheme, the technical problem that an existing hard polishing tool cannot stretch into a deep cavity in a workpiece to clean burrs can be solved.

Description

Technical Field

[0001] The utility model relates to the technical field of machining, in particular to a flexible grinding head structure. Background Art

[0002] In the field of machining, the inner holes or chambers in workpieces often have complex shapes and paths. Specifically, they may include multiple branches, bends, and narrow spaces, making machining and cleaning extremely difficult. For example, in industries such as aerospace and automotive manufacturing, many parts need to be precision machined. However, the complex internal structures pose challenges to subsequent cleaning work.

[0003] When cleaning the burrs in the inner holes of these workpieces, especially in deep cavities, manual cleaning is usually adopted, and common tools include hard tools such as milling cutters. Although these tools can effectively remove some surface burrs, they are inadequate when faced with complex structures. Manual cleaning is not only time-consuming and laborious, but it is also difficult to ensure the uniformity and thoroughness of burr cleaning during the operation, especially in the deep cavity parts inside the workpiece. The rigidity of hard tools limits their application in narrow and curved paths, making it difficult to achieve the desired cleaning effect.

[0004] Therefore, the main problem in the prior art is that hard tools cannot reach into the deep cavities inside the workpiece to effectively clean and grind burrs, cannot flexibly adjust the direction and angle, and thus cannot thoroughly clean deep inside the workpiece, resulting in uneven burr treatment of the workpiece and unstable workpiece quality. Summary of the Utility Model

[0005] The utility model provides a flexible grinding head structure, which can solve the technical problem that existing hard grinding tools cannot reach into the deep cavities inside the workpiece to clean burrs.

[0006] The present application provides the following technical solutions:

[0007] The flexible grinding head structure includes a flexible sleeve, a rear grip detachably connected to one end of the flexible sleeve, a front grip slidably sleeved on the flexible sleeve, and a grinding head for grinding burrs. A motor for driving the grinding head to rotate is installed inside the rear grip, and a flexible steel wire for transmission is fixedly connected between the output ends of the grinding head and the motor; the front grip includes a housing slidably sleeved on the flexible sleeve, and an abutting head radially inserted into the housing. One end of the abutting head close to the flexible sleeve can contact the outer surface of the flexible sleeve, and a spring for resetting the abutting head is fixedly installed at the end of the abutting head far from the flexible sleeve.

[0008] Advantageous Effects:

[0009] 1. Thoroughly clean the burrs inside the workpiece to ensure the grinding quality: Utilizing the bendable characteristics of the flexible sleeve and flexible wire, the inclination angle can be adjusted as needed, enabling the grinding head to reach deep into the deep cavity of the workpiece to thoroughly clean the burrs and ensure the grinding quality. The design of the flexible sleeve and flexible wire endows the grinding head with high flexibility, allowing it to easily adjust the angle and direction of the grinding head according to the specific internal structure of the workpiece. This flexibility enables the grinding head to reach the deep cavity that is difficult to access with traditional hard tools, thereby achieving a thorough cleaning of the burrs inside the workpiece, not only improving the grinding efficiency but also ensuring the consistency and reliability of the grinding quality.

[0010] 2. Provide a more stable operation experience: The dual-grip design of the front grip and rear grip makes the holding more stable. The operator can hold both the front grip and the rear grip simultaneously and, through the coordinated operation of both hands, ensure a more stable posture during the grinding operation, which is beneficial for enhancing the stability during the grinding operation. This stability is particularly important for fine grinding operations, as it can reduce the grinding deviation caused by hand tremors or uneven force, thereby improving the grinding accuracy and efficiency. In addition, the dual-grip design can also disperse the hand pressure and reduce the fatigue caused by long-term operation, providing a better holding experience for the grinding operation.

[0011] 3. Significantly improve the usability and practicality of the grinding tool: The front grip is slidably sleeved on the flexible sleeve and used in conjunction with the abutting head. The operator can timely and flexibly adjust the position of the front grip according to the depth of the deep cavity of the workpiece to ensure that the grinding head can accurately reach the area to be ground, enabling the grinding head to extend deeper into the workpiece. This not only improves the convenience and practicality of the operation but also makes the burr cleaning more thorough, thereby enhancing the grinding effect.

[0012] Furthermore, as an improvement, it also includes a power supply unit independent of the rear grip for supplying power to the motor, and the power supply unit is electrically connected to the motor.

[0013] Beneficial effects: By independently arranging the power supply unit outside the rear grip, the structure of the rear grip can be significantly simplified. This design eliminates the need for the rear grip to incorporate a battery or other power components, thereby reducing the volume and weight of the rear grip. The operator can feel a lighter and more comfortable hand feeling when holding the rear grip, which is beneficial for long-term operation. In addition, it also makes the power supply more sufficient and reliable. Traditional designs often integrate the power supply inside the rear grip, which not only increases the complexity and weight of the rear grip but may also affect the usage duration of the device due to the limited battery capacity. An independent power supply unit can use a larger-capacity battery to provide longer power support, ensuring that the device will not be interrupted due to insufficient power during use. This is particularly important for applications that require long-term continuous operation and can significantly improve work efficiency.

[0014] Further, as an improvement, the abutting head is made of silica gel material.

[0015] Beneficial effects: The silica gel material has a relatively high friction coefficient, enabling the abutting head to contact the flexible sleeve more firmly, thereby providing a stronger gripping force for fixing the front grip and reducing the positional deviation of the front grip caused by sliding or loosening. The silica gel material itself has good elasticity and flexibility, which allows the abutting head to better conform to the surface of the flexible sleeve when in contact with it, and can form a tight contact surface even on complex curved surfaces or irregular shapes.

[0016] Further, as an improvement, a dust cover covering the top of the abutting head is fixedly arranged on the housing.

[0017] Beneficial effects: The application of the dust cover can not only significantly reduce the cleaning and maintenance frequency of the abutting head part, extend its service life, but also limit the abutting head to prevent it from slipping off the housing of the front grip, improving the stability and reliability of the overall structure. Description of the Drawings

[0018] Figure 1 It is the front view of the first embodiment of the flexible grinding head structure of the present utility model;

[0019] Figure 2 It is Figure 1 the enlarged view at A in

[0020] Figure 3 It is Figure 2 the sectional view taken along B - B of Detailed Description of the Embodiment

[0021] The following is a further detailed description through specific embodiments:

[0022] The markings in the attached drawings of the specification include: grinding head 1, flexible sleeve 2, connecting head 21, rear grip 3, connecting rod 31, rear housing 32, button 33, front grip 4, front housing 41, abutting head 42, spring 43, dust cover 44, flexible steel wire 5, power supply 6, protective sleeve 7.

[0023] Embodiment 1

[0024] Combined with Figures 1 - 3 as shown, the structure of the flexible grinding head 1 includes a grinding head 1, a flexible sleeve 2, a rear grip 3, and a motor connected in sequence, and further includes a front grip 4 slidably sleeved on the flexible sleeve 2.

[0025] In this embodiment, the flexible sleeve 2 is a metal hose made of stainless steel material, and the grinding head 1 is connected to Figure 1A gap of 2 mm is maintained at the left end of the flexible sleeve 2 shown. A connector 21 with an internal threaded hole is welded and fixed at the right end of the flexible sleeve 2. The rear grip 3 includes a connecting rod 31 detachably connected to the connector 21 in a threaded manner, a rear housing 32 fixedly connected to the connecting rod 31, a motor fixedly installed in the rear housing 32, and a wedge-shaped button 33 for controlling the opening and closing of the motor. Among them, the connecting rod 31 is of a hollow structure. A flexible steel wire 5 for transmission is fixedly arranged between the output end of the motor and the grinding head 1. The flexible steel wire 5 sequentially passes through the hollow parts of the connecting rod 31, the connector 21, and the flexible sleeve 2 from the output end of the motor and is fixedly connected to the grinding head 1 by welding. When the button 33 is pressed to start the motor, under the driving action of the flexible steel wire 5, the grinding head 1 fixedly connected to the end of the flexible steel wire 5 rotates at a high speed to be able to grind and clean the burrs in the workpiece. A power supply 6 for supplying power to the motor is independently arranged outside the rear grip 3. The power supply 6 is electrically connected to the motor by a long-distance wire, and a protective sleeve 7 for protecting the wire is sleeved outside the wire.

[0026] In this embodiment, the front grip 4 includes a front housing 41 and a contact head 42. Among them, the front housing 41 is sleeved on the flexible sleeve 2. The clearance fit between the front housing 41 and the flexible sleeve 2 enables the whole front grip 4 to freely slide along the flexible sleeve 2 between the grinding head 1 and the rear grip 3. The function of the contact head 42 is to fix the position of the front grip 4 when the front grip 4 is slid to a suitable position on the flexible sleeve 2, and at the same time reduce the vibration impact of the rotating flexible steel wire 5 on the staff's hand and improve the comfort of holding the front grip 4. The contact head 42 is made of silica gel with a larger coefficient of friction. When the contact head 42 is pressed downward as shown in Figure 3 the end of the contact head 42 close to the flexible sleeve 2 can contact the outer surface of the flexible sleeve 2 to fix the position of the front grip 4 on the flexible sleeve 2. A spring 43 for resetting the contact head 42 is fixedly installed at the end of the contact head 42 far from the flexible sleeve 2. The specific installation method is that one end of the spring 43 is fixedly welded to the top of the contact head 42, and the other end of the spring 43 is fixedly welded to the front housing 41. A dust-proof cover 44 covering the top of the contact head 42 is adhesively fixed on the housing. The dust-proof cover 44 is made of nylon.

[0027] The specific application process is as follows:

[0028] In use, the operator holds the front grip 4 with the left hand and presses the abutting head 42 with the thumb to initially fix the position of the front grip 4. The operator holds the rear grip 3 with the right hand and presses the button 33 with the thumb to start the motor. Driven by the flexible steel wire 5, the grinding head 1 rotates at a high speed. Then, the operator drags the flexible sleeve 2 forward so that the grinding head 1 can extend into the deep cavity inside the workpiece to grind and clean the burrs on the surface. Due to the good bendability of the flexible sleeve 2 and the flexible steel wire 5, the operator can change the orientation of the grinding head 1 by adjusting the tilt angle of the front grip 4, enabling the grinding head 1 to more smoothly extend into the deep cavity inside the workpiece. It is worth mentioning that as the grinding head 1 continuously penetrates, the operator can loosen the abutting head 42 of the left hand and let the front grip 4 slide towards the rear grip 3. By adjusting the position of the front grip 4 on the flexible sleeve 2, the grinding head 1 can more deeply and thoroughly clean the burrs in the deep cavity of the workpiece. While improving the processing quality of the workpiece, it also facilitates the operation of the operator, having a positive impact on improving the grinding efficiency of the operator.

[0029] The above are only the embodiments of the present invention. The present invention is not limited to the fields involved in this embodiment case. Common knowledge such as the specific structures and characteristics known in the solution is not described in detail here. It should be noted that for those skilled in the art, without departing from the structure of the present invention, several deformations and improvements can still be made, which should also be regarded as the protection scope of the present invention, and these will not affect the implementation effect of the present invention and the practicality of the patent. The protection scope required by this application should be based on the content of its claims, and the specific implementation manners described in the specification can be used to interpret the content of the claims.

Claims

1. Flexible grinding head structure, characterized by: It comprises a flexible sleeve, a rear handle detachably connected to one end of the flexible sleeve, a front handle slidably sleeved on the flexible sleeve, and a grinding head for grinding burrs, a motor for driving the grinding head to rotate is installed in the rear handle, and a flexible steel wire for transmission is fixedly connected between the grinding head and the output end of the motor; The front grip includes a shell body slidably mounted on a flexible sleeve, and a butt joint radially inserted into the shell body, wherein an end of the butt joint close to the flexible sleeve can contact the outer surface of the flexible sleeve, and an end of the butt joint away from the flexible sleeve is fixedly mounted with a spring for resetting the butt joint.

2. The flexible grinding head structure according to claim 1, characterized in that: It also includes a power supply device which is independent of the rear handle and provides power to the motor, and the power supply device is electrically connected to the motor.

3. The flexible grinding head structure according to claim 2, characterized in that: The abutment joint is made of silicone material.

4. The flexible grinding head structure according to claim 3, characterized in that: A dust cover covering the top of the abutment head is fixedly arranged on the shell.

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