Polishing tool

Abstract

The invention discloses a polishing tool, and relates to the technical field of machining, the polishing tool mainly comprises a polishing head and a tensioning seat, the polishing head is used for attaching abrasive paper and polishing, the tensioning seat is connected with the polishing head through a connecting piece, and the two ends of the abrasive paper can be arranged on the polishing head and the tensioning seat in a sleeving mode after being fixedly connected. The connecting piece can drive the grinding head and the tensioning base to be away from each other or close to each other, when the abrasive paper is installed, the connecting piece drives the grinding head and the tensioning base to be close to each other, and when grinding is needed, the connecting piece drives the grinding head and the tensioning base to be away from each other and enables the abrasive paper to be in a tensioned state. The abrasive paper can be fully utilized, waste is reduced, and resources are saved.

Description

Technical Field

[0001] The invention relates to the technical field of mechanical processing, in particular to a grinding tool. Background Art

[0002] With the continuous improvement of the precision and surface roughness requirements for aviation parts manufacturing, most parts need to be ground and polished before final completion, which brings great difficulty to the work of fitters. Pneumatic and electric tools can be used for large-area grinding, but for many blind corners, manual grinding is the only option. The disadvantage of several grinding tools currently on the market is that the sandpaper is fixed in a clamping manner. After clamping, the sandpaper is inconvenient or even cannot be moved. When grinding corners at work, only the front end of the sandpaper is used. The sandpaper will wear out after a short time and needs to be replaced. At this time, most of the sandpaper has not been used. Replacing it will cause a lot of waste and increase costs.

[0003] Therefore, a grinding tool is needed to achieve full use of sandpaper and reduce waste. Summary of the invention

[0004] The purpose of the present invention is to provide a grinding tool to solve the problems existing in the above-mentioned prior art, so that sandpaper can be fully utilized, waste can be reduced, and resources can be saved.

[0005] To achieve the above object, the present invention provides the following solutions:

[0006] The present invention provides a grinding tool, comprising a grinding head and a tensioning seat, wherein the tensioning seat is connected to the grinding head via a connecting piece, the grinding head and the tensioning seat are used to sleeve annular sandpaper, the connecting piece can drive the grinding head and the tensioning seat to move away from each other or move closer to each other, and the connecting piece drives the grinding head and the tensioning seat to move away from each other to change the sandpaper from a relaxed state to a tensioned state.

[0007] In some embodiments of the present invention, a first groove is provided at one end of the grinding head close to the tensioning seat, and a corresponding second groove is provided at one end of the tensioning seat close to the grinding head, and the space formed by the first groove and the second groove is used to accommodate part of the connecting member.

[0008] In some embodiments of the present invention, the connecting member includes a stud, one end of which is threadedly connected to the grinding head or the tensioning seat, and the other end of which is rotatably connected to the tensioning seat or the grinding head.

[0009] In some embodiments of the present invention, two ends of the stud are respectively threadedly connected to the grinding head and the tensioning seat.

[0010] In some embodiments of the present invention, the connecting member further comprises a knob, and the knob is fixedly disposed on the stud and is used for rotating the stud.

[0011] In some embodiments of the present invention, the knob is fixedly disposed at a middle position of the stud and is at the same distance from the tensioning seat and the grinding head.

[0012] In some embodiments of the present invention, the knob side wall is circumferentially provided with anti-slip grooves to increase friction when twisting.

[0013] In some embodiments of the present invention, guide holes are provided at relative positions between the grinding head and the tensioning seat, and the guide holes are used for the guide columns to pass through.

[0014] In some embodiments of the present invention, a first guide hole is disposed on each side of the first groove, and a corresponding second guide hole is disposed on each side of the second groove. Both ends of the guide column are respectively inserted into the first guide hole and the second guide hole.

[0015] In some embodiments of the present invention, the surface of the tensioning seat for contacting the sandpaper is a cylindrical side surface.

[0016] Compared with the prior art, the present invention has achieved the following technical effects:

[0017] The grinding head of the present invention is used for sandpaper to fit and perform grinding. The tensioning seat is connected to the grinding head through a connecting piece. After the two ends of the sandpaper are fixedly connected, they can be sleeved on the grinding head and the tensioning seat. The connecting piece can drive the grinding head and the tensioning seat to move away from or approach each other. When the sandpaper is installed, the connecting piece drives the grinding head and the tensioning seat to approach each other. When grinding is required, the connecting piece drives the grinding head and the tensioning seat to move away from each other and puts the sandpaper in a tensioned state. The connecting piece makes the distance between the tensioning seat and the grinding head adjustable. When the sandpaper located at the grinding head is worn, the connecting piece can be adjusted to make the grinding head and the tensioning seat approach each other, and then the sandpaper is rotated so that the other part of the sandpaper is located at the grinding part of the grinding head, so that almost the entire sandpaper can be used, thereby avoiding waste and saving resources. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 This is a disassembled structural diagram of a grinding device in some embodiments of the present invention.

[0020] In the figure: 1-grinding head; 2-tensioning seat; 3-stud; 4-knob; 5-guide column; 6-first groove; 7-second groove. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] The purpose of the present invention is to provide a grinding tool to solve the problems existing in the prior art, so that sandpaper can be fully utilized, waste can be reduced, and resources can be saved.

[0023] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0024] like Figure 1 As shown, the present invention provides a grinding tool, including a grinding head 1 and a tensioning seat 2, the grinding head 1 and the tensioning seat 2 are used for sleeve sandpaper, the grinding head 1 and the tensioning seat 2 form an integral structure, the sandpaper is sleeved on the integral structure, the tensioning seat 2 is connected to the grinding head 1 through a connecting piece, and the sandpaper can be sleeved on the grinding head 1 and the tensioning seat 2 after the two ends of the sandpaper are fixedly connected, the connecting piece can drive the grinding head 1 and the tensioning seat 2 to move away from or approach each other, and the connecting piece drives the grinding head 1 and the tensioning seat 2 to move away from each other to change the sandpaper from a relaxed state to a tensioned state, the relaxed state is a state in which the annular sandpaper can be sleeved and installed on the grinding head 1 and the tensioning seat 2, and the tensioned state is when the annular sandpaper is sleeved on the grinding head 1 and the tensioning seat 2, the annular sandpaper is in a tight state. When installing sandpaper, the connecting piece drives the grinding head 1 and the tensioning seat 2 to approach each other. When grinding is required, the connecting piece drives the grinding head 1 and the tensioning seat 2 to move away from each other and put the sandpaper in a tensioned state. The connecting piece makes the distance between the tensioning seat 2 and the grinding head 1 adjustable. When the sandpaper located at the grinding head 1 is worn, the connecting piece can be adjusted to make the grinding head 1 and the tensioning seat 2 approach each other, and then the sandpaper is rotated so that the other part of the sandpaper is located at the grinding part of the grinding head 1, so that almost the entire sandpaper can be used, avoiding waste and saving resources. Moreover, since the connecting piece can realize the flexible adjustment of the grinding head 1 and the tensioning seat 2 to move away from or approach each other, this adjustability is not only reflected in the process of sandpaper installation, tensioning and rotation position, but also during the use cycle of the entire grinding device, if the sandpaper is loose to a certain extent, it can be adjusted at any time through the connecting piece to make the sandpaper return to a suitable tensioned state to ensure the continuous and effective grinding work.

[0025] Other things that need to be explained are that since the sandpaper is fixedly connected at both ends and then mounted on the grinding head 1 and the tensioning seat 2, as long as the length of the sandpaper can meet the mounting requirements, the device can be compatible with sandpaper of various specifications (such as different widths, different thicknesses, etc.), which greatly increases the versatility of the grinding device. Users can choose suitable sandpaper according to specific grinding tasks and cost factors, without the need to equip special grinding heads 1 devices for sandpaper of different specifications.

[0026] It should also be noted that the ring sandpaper can be formed by cutting the sandpaper into suitable long strips and then gluing the two ends together or nailing them together.

[0027] In some embodiments, a first groove 6 is provided at one end of the grinding head 1 close to the tensioning seat 2, and a corresponding second groove 7 is provided at one end of the tensioning seat 2 close to the grinding head 1. The space formed by the first groove 6 and the second groove 7 is used to accommodate the connector. The arrangement of the groove provides a relatively closed accommodation space for the connector, which can effectively protect the connector from interference from external factors. For example, during the grinding operation, impurities such as dust and debris may be generated. If the connector is external, these impurities are easily attached to the connector, which may affect its normal adjustment function and even cause its wear to increase. The connector accommodated in the groove can avoid these problems to a large extent, extend the service life of the connector, and reduce the frequency of maintenance or replacement due to connector failure. If the connector is exposed, it is also possible that the connector is touched during the grinding process, which may misadjust the state of the sandpaper. The first groove 6 and the second groove 7 accommodate the connector, which can avoid this problem to a large extent.

[0028] In some embodiments, the connecting member includes a stud 3, at least one of the two ends of the stud 3 is threadedly connected to the grinding head 1 or the tensioning seat 2, and the other end is rotatably connected to the tensioning seat 2 or the grinding head 1. As long as one end of the stud 3 is threadedly connected to the grinding head 1 or the tensioning seat 2, the other end can also be threadedly connected, or in-situ rotatably connected (an annular protrusion can be added to the end of the stud 3, and then a slide groove can be set on the bottom side of the first groove 6 or the second groove 7, and the protrusion can be located in the slide groove to achieve in-situ rotation), so that the stud 3 can be screwed to make the grinding head 1 and the tensioning seat 2 approach or move away from each other. The stud 3 and the grinding head 1 or the tensioning seat 2 are tightly engaged through the thread. During the grinding operation, even if it is subjected to vibration, external force impact, etc., it can effectively prevent the connection part from loosening, disconnection, etc., to ensure that the grinding head 1 and the tensioning seat 2 always maintain a stable connection relationship, and ensure the normal operation of the entire grinding device.

[0029] As a preferred embodiment, the two ends of the stud 3 are respectively threadedly connected to the grinding head 1 and the tensioning seat 2, and the threads at the two ends are in opposite directions. The threaded connection at the two ends makes the forces acting on the grinding head 1 and the tensioning seat 2 relatively symmetrical and balanced during the adjustment process. When the stud 3 is rotated, the threads at the two ends act simultaneously, so that the force is evenly transmitted between the grinding head 1 and the tensioning seat 2, avoiding the deformation and distortion of components caused by excessive or insufficient force on one side, which helps to maintain the shape accuracy and structural integrity of the entire grinding device and extend its service life. In addition, the threaded connection at the two ends makes it possible for the grinding head 1 and the tensioning seat 2 to produce the same displacement away from or close to each other when the stud 3 is rotated. Compared with the threaded connection at one end, a larger relative displacement of the grinding head 1 and the tensioning seat 2 can be obtained by rotating the stud 3 a few times, and the adjustment speed is faster, saving more effort and time.

[0030] In some embodiments, the connector also includes a knob 4, which is fixedly arranged on the stud 3 and used to rotate the stud 3. The operator can easily drive the stud 3 to rotate by turning the knob 4, thereby adjusting the distance between the grinding head 1 and the tensioning seat 2. Compared with directly twisting the stud 3 by hand, the knob 4 provides a larger force point and a more comfortable grip, making the operation of rotating the stud 3 more labor-saving, especially when the tightness of the sandpaper needs to be frequently adjusted, which can effectively reduce the labor intensity of the operator and improve the operating efficiency. In the process of turning the knob 4, the operator can intuitively see the rotation of the knob 4, and then roughly understand the rotation progress of the stud 3 and the adjustment of the distance between the grinding head 1 and the tensioning seat 2. This is more intuitive than simply judging the rotation of the stud 3 by feeling, which helps the operator to better grasp the degree of adjustment and avoid over-adjustment or under-adjustment.

[0031] In some embodiments, the knob 4 is fixedly arranged in the middle of the stud 3, and is at the same distance from the tensioning seat 2 and the grinding head 1. When the knob 4 is turned to adjust the stud 3 and thus change the distance between the grinding head 1 and the tensioning seat 2, since the knob 4 is located in the middle of the stud 3 and is at the same distance from both, the force applied by the operator on the knob 4 can be transmitted relatively evenly to the connection parts between the two ends of the stud 3 and the grinding head 1 and the tensioning seat 2. This makes the forces from the stud 3 applied to the grinding head 1 and the tensioning seat 2 relatively balanced during the adjustment process, avoiding problems such as tilting and twisting of components caused by excessive force on one side and insufficient force on the other side, ensuring the stability of the device structure during the entire adjustment process, and facilitating the uniform and precise adjustment of the tightness of the sandpaper.

[0032] It should be noted that the knob 4 may not be arranged at the middle position of the stud 3, as long as the tensioning seat 2 and the grinding head 1 can be normally moved closer and farther away without causing any conflict.

[0033] In some embodiments, the side wall of the knob 4 is provided with anti-skid patterns in the circumferential direction to increase the friction when twisting. The provision of the anti-skid patterns effectively increases the friction between the knob 4 and the operator's hand. When twisting the knob 4, even if the hand is sweaty or in some greasy working environments, the possibility of the knob 4 slipping out of the hand can be greatly reduced, ensuring that the operator can stably and continuously apply torque to the knob 4, thereby achieving smooth rotation of the stud 3, and ensuring the stability of the adjustment operation of the entire grinding device.

[0034] In some embodiments, a guide hole is provided at the relative position of the grinding head 1 and the tensioning seat 2, and the guide hole is used for the guide column 5 to pass through. The cooperation between the guide hole and the guide column 5 enables the grinding head 1 and the tensioning seat 2 to always maintain an accurate alignment relationship during the relative movement. When the distance between the two is adjusted by the connecting piece, the guide hole provides a clear path for the guide column 5 to pass through, and also provides a clear direction of movement for the relative movement of the grinding head 1 and the tensioning seat 2. The movement of the guide column 5 in the guide hole will constrain them to move only in a straight line, which can effectively limit the deviation and dislocation of the grinding head 1 and the tensioning seat 2, ensure that they move smoothly in the predetermined direction, avoid problems such as uneven force and premature wear of the sandpaper due to random swinging or irregular movement, and help to ensure that the sandpaper is evenly stressed during tensioning and use. Thereby maintaining the stability of the entire grinding device structure and ensuring its normal operation.

[0035] In some embodiments, a first guide hole is provided on each side of the first groove 6, and a corresponding second guide hole is provided on each side of the second groove 7. The two ends of the guide column 5 are respectively inserted into the first guide hole and the second guide hole. The symmetrical layout makes the connection structure between the grinding head 1 and the tensioning seat 2 more stable and symmetrical. During the operation of the grinding device, whether it is subjected to external force impact or when performing operations such as adjusting the tightness of the sandpaper, the guide columns 5 on both sides cooperate with the guide holes to evenly share the force, effectively preventing the grinding head 1 and the tensioning seat 2 from tilting, dislocation, etc. due to excessive force on one side, thereby ensuring the stability and reliability of the entire grinding device structure.

[0036] It should be noted that the positions and numbers of the guide holes and guide columns 5 can be flexibly adjusted according to needs. For example, two guide holes can be provided on the tensioning seat 2 and the grinding head 1 on both sides of the stud 3, and a corresponding number of guide columns 5 can be provided.

[0037] In some embodiments, the surface of the tensioning seat 2 for fitting the sandpaper is a cylindrical side surface, which is a continuous curved surface with uniform curvature. When the sandpaper fits on the cylindrical side surface of the tensioning seat 2, it can achieve a relatively tight and uniform fit with the curved surface. Compared with some irregularly shaped or angular fitting surfaces, the cylindrical side surface can better adapt to the flexible material of the sandpaper, so that the sandpaper can maintain a good contact state on the entire cylindrical side surface, reducing the possibility of gaps or partial warping at the fitting point, so that the sandpaper can be more effectively transmitted after the sandpaper is tightened, ensuring the polishing effect, and there will be no stress concentration that causes the sandpaper to be damaged.

[0038] It should be noted that the grinding head 1 can be manufactured in different shapes as needed. For example, a triangular prism-shaped grinding head can be convenient for grinding corners of components in a narrow space, and a square-shaped grinding head can be convenient for grinding flat surfaces.

[0039] The present invention uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only used to help understand the method and core ideas of the present invention. At the same time, for those skilled in the art, according to the ideas of the present invention, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. A grinding tool, characterized in that: It includes a grinding head and a tensioning seat, which is connected to the grinding head via a connecting piece. The grinding head and the tensioning seat are used to sleeve annular sandpaper. The connecting piece can drive the grinding head and the tensioning seat to move away from or towards each other. The connecting piece drives the grinding head and the tensioning seat to move away from each other so that the sandpaper can change from a relaxed state to a tensioned state.

2. The grinding tool according to claim 1, characterized in that: A first groove is arranged at one end of the grinding head close to the tensioning seat, and a corresponding second groove is arranged at one end of the tensioning seat close to the grinding head. The space formed by the first groove and the second groove is used to accommodate part of the connecting member.

3. The grinding tool according to claim 1, characterized in that: The connecting member comprises a stud, one end of which is threadedly connected to the grinding head or the tensioning seat, and the other end of which is rotatably connected to the tensioning seat or the grinding head.

4. The grinding tool according to claim 1, characterized in that: The connecting member comprises a stud, two ends of which are respectively threadedly connected to the grinding head and the tensioning seat, and the thread directions of the two ends are opposite.

5. The grinding tool according to claim 4, characterized in that: The connecting member also includes a knob, which is fixedly arranged on the stud and is used to rotate the stud.

6. The grinding tool according to claim 5, characterized in that: The knob is fixedly arranged at the middle position of the stud and is at the same distance from the tensioning seat and the grinding head.

7. The grinding tool according to claim 6, characterized in that: The knob side wall is circumferentially provided with anti-slip grooves.

8. The grinding tool according to claim 2, characterized in that: It also includes a guide column, and a guide hole is arranged at the relative position of the grinding head and the tensioning seat, and the guide hole is used for the guide column to pass through.

9. The grinding tool according to claim 8, characterized in that: A first guide hole is respectively arranged on both sides of the first groove, and corresponding second guide holes are arranged on both sides of the second groove. Both ends of the guide column are respectively inserted into the first guide hole and the second guide hole.

10. The grinding tool according to claim 1, characterized in that: The surface of the tensioning seat for contacting the sandpaper is a cylindrical side surface.

Images