Pipe inner diameter polishing tool

Abstract

The utility model provides a pipe inner diameter grinding tool. The pipe inner diameter grinding tool comprises a main rod body, a plurality of grinding heads, an elastic assembly and an adapter, the grinding heads are arranged on the peripheral portion of the main rod body, the multiple grinding heads are evenly arranged around the main rod body and can move in the radial direction of the main rod body, the elastic assembly is arranged on the main rod body and connected with the grinding heads, and when the grinding heads move towards the interior of the main rod body in the radial direction of the main rod body, the grinding heads are driven by the elastic assembly to move towards the interior of the main rod body. The elastic assembly generates elastic deformation, the elastic force of the elastic assembly drives the grinding head to move towards the outside of the main rod body in the radial direction of the main rod body, and the adapter is connected with the main rod body and used for being connected with a power assembly. The pipe inner diameter polishing tool can polish pipes with different calibers, is high in polishing quality and coaxiality with the pipes, is not easy to change the axis position of an original pipe, and is more efficient, more convenient and better in quality performance compared with a traditional polishing tool.

Description

TECHNICAL FIELD

[0001] The utility model relates to pipe material processing technical field, concretely relates to a pipe material inner diameter polishing tool. BACKGROUND

[0002] In the engineering practice process, the structure form of rough pipe material sleeving fine pipe material is often utilized, and the cooperation of the two has very high requirements. For example, in the unmanned aerial vehicle industry, the inner diameter of the rough carbon pipe sleeving the outer diameter of the fine carbon pipe is used as the aircraft wing body power transmission form. Due to the limitation of the processing and manufacturing form, the inner diameter of the purchased carbon pipe generally does not meet the requirements, and the inner wall of the pipe material needs to be polished to change the inner diameter of the pipe material.

[0003] The existing pipe material inner diameter polishing tool in the market has low use efficiency or poor quality performance during work, for example: the existing metal grinding head or sandpaper grinding head in the market can only polish pipe material with a single caliber. If pipe materials with different inner diameters are polished, different diameter grinding heads need to be replaced, and the inner diameter of the polished pipe material cannot be guaranteed to be coaxial with the original state, which causes the inner diameter axis of the polished pipe material to deviate. SUMMARY

[0004] The utility model aims at overcoming the shortcomings and deficiencies in the prior art, and provides a pipe material inner diameter polishing tool.

[0005] One embodiment of the utility model provides a pipe material inner diameter polishing tool, which comprises a main rod body, a plurality of grinding heads, an elastic component and an adapter;

[0006] The grinding head is arranged on the outer peripheral part of the main rod body, a plurality of grinding heads are uniformly arranged around the main rod body and can move in the radial direction of the main rod body, the elastic component is arranged on the main rod body and connected with the grinding head, when the grinding head moves towards the inside of the main rod body in the radial direction of the main rod body, the elastic component produces elastic deformation, the elastic force of the elastic component drives the grinding head to move towards the outside of the main rod body in the radial direction of the main rod body, and the adapter is connected with the main rod body and used for connecting with a power component.

[0007] In some optional embodiments, a movable cavity is arranged in the main rod body, and a plurality of side sliding grooves in communication with the movable cavity are arranged on the outer peripheral part of the main rod body and uniformly arranged around the movable cavity;

[0008] The grinding head is in sliding fit with the side sliding groove, the grinding head can move in the radial direction of the main rod body relative to the side sliding groove, and a first inclined guide part is arranged on the grinding head.

[0009] The elastic assembly comprises a top rod and an elastic piece, the top rod is provided with a plurality of second inclined guide portions, the second inclined guide portions are in sliding fit with the first inclined guide portions, the elastic piece is arranged in the movable cavity and is connected with the top rod, when the grinding head moves along the radial direction of the main rod body into the movable cavity, the second inclined guide portions slide relative to the first inclined guide portions to drive the top rod to move, the top rod moves to drive the elastic piece to elastically deform, and the elastic piece drives the grinding head to move along the radial direction of the main rod body out of the main rod body through the top rod.

[0010] In some optional embodiments, the second inclined guide portions are arranged around the top rod and are in sliding fit with the first inclined guide portions of the plurality of grinding heads.

[0011] In some optional embodiments, a guide hole is arranged in the main rod body, and a part of the top rod extends into the guide hole and is in sliding fit with the guide hole.

[0012] In some optional embodiments, the elastic piece is a spring, and the spring is sleeved on the outside of the top rod.

[0013] In some optional embodiments, one end of the movable cavity is provided with a first mounting opening, a end cover is detachably arranged at the first mounting opening, and an avoiding hole is arranged on the end cover.

[0014] One side of the second inclined guide portion forms a limiting step, and two ends of the elastic piece abut against the end cover and the limiting step respectively, when the grinding head moves along the radial direction of the main rod body into the movable cavity to drive the top rod to move, an end of the top rod passes through the avoiding hole and extends out of the movable cavity.

[0015] In some optional embodiments, one end of the side sliding groove towards the end cover is provided with a second mounting opening for the grinding head to pass through, the second mounting opening is in communication with the first mounting opening, and the end cover closes the first mounting opening and the second mounting opening.

[0016] In some optional embodiments, an adjusting piece is movably arranged on the main rod body, the adjusting piece is in limiting fit with the grinding head and can limit the maximum distance of the grinding head moving along the radial direction of the main rod body out of the main rod body.

[0017] In some optional embodiments, an adjusting piece is movably arranged on the main rod body, the adjusting piece can move along the axial direction of the main rod body, and a limiting portion is arranged on the adjusting piece.

[0018] The third inclined guide part is arranged on the grinding head, the limiting part is in limiting cooperation with the third inclined guide part, and the adjusting piece limits the position of the third inclined guide part to limit the maximum distance of the grinding head moving outward along the radial direction of the main rod body

[0019] In some optional embodiments, the adjusting piece comprises a knob and a lock nut, the lock nut is in threaded cooperation with the main rod body and is connected with the knob, the knob is sleeved on the main rod body, the knob is provided with a groove, the limiting part is arranged on the inner wall of the groove, and part of the third inclined guide part extends into the groove.

[0020] Compared with the prior art, the pipe inner diameter polishing tool can polish pipes with different diameters, has high polishing quality, high coaxiality with the pipe, and is not easy to change the axial position of the original pipe, and is more efficient, convenient and has good quality performance compared with the traditional polishing tool.

[0021] In order to enable clearer understanding of the utility model, the specific embodiments of the utility model will be described below in combination with the drawings. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 is a structural schematic view of the pipe inner diameter polishing tool of one embodiment of the utility model;

[0023] Figure 2 is an exploded view of the pipe inner diameter polishing tool of one embodiment of the utility model;

[0024] Figure 3 is a sectional view of the pipe inner diameter polishing tool of one embodiment of the utility model;

[0025] Figure 4 is a structural schematic view of the grinding head of one embodiment of the utility model;

[0026] Figure 5 is a structural schematic view of the main rod body of one embodiment of the utility model;

[0027] Figure 6 is a structural schematic view of the elastic assembly of one embodiment of the utility model;

[0028] Figure 7 is a structural schematic view of the adjusting piece of one embodiment of the utility model.

[0029] BRIEF DESCRIPTION OF DRAWINGS

[0030] 10, main rod body; 11, movable cavity; 12, side sliding groove; 13, guide hole; 14, first mounting port; 15, end cover; 16, avoiding hole; 17, second mounting port; 18, mounting groove; 20, grinding head; 21, first inclined guide part; 22, third inclined guide part; 30, elastic assembly; 31, top rod; 32, elastic piece; 33, second inclined guide part; 34, limiting step; 40, adapter; 50, adjusting piece; 51, limiting part; 52, knob; 53, lock nut; 54, groove. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Please refer to Figures 1 to 3 The utility model discloses an embodiment provides a kind of pipe inner diameter polishing tool, comprising: main rod body 10, multiple grinding head 20, elastic assembly 30 and adapter 40.

[0032] Grinding head 20 is arranged at the outer circumferential portion of main rod body 10, multiple grinding head 20 is evenly arranged around main rod body 10, and can move in the radial direction of main rod body 10, elastic assembly 30 is arranged on main rod body 10, and is connected with grinding head 20, when grinding head 20 moves to main rod body 10 along the radial direction of main rod body 10, elastic assembly 30 generates elastic deformation, and the elastic force of elastic assembly 30 drives grinding head 20 to move to main rod body 10 along the radial direction of main rod body 10, adapter 40 is connected with main rod body 10, for being connected with power component.Drive adapter 40 to rotate device such as electric drill can be power component.

[0033] Grinding head 20 is pressed to main rod body 10, then main rod body 10 is inserted into the inside of pipe material, and the elastic force of elastic assembly 30 will push grinding head 20 to abut against the inner wall of pipe material, adapter 40 is installed on power component, power component drives adapter 40 to rotate, and then makes main rod body 10 drive grinding head 20 to rotate in the inside of pipe material, and grinding head 20 will polish the inner wall of pipe material to expand the inner diameter of pipe material.Because multiple grinding head 20 is pushed to the inner wall of pipe material under the pushing of elastic assembly 30, main rod body 10 is pushed to the middle position of pipe material together, so that the coaxiality of main rod body 10 and pipe material is high, and the polishing quality is effectively improved.

[0034] The side of grinding head 20 towards main rod body 10 is formed with polishing texture or polishing structure.

[0035] Please refer to Figures 2 to 6In some optional embodiments, the main rod body 10 is provided with a movable cavity 11, and the outer periphery of the main rod body 10 is provided with a plurality of side sliding grooves 12 in communication with the movable cavity 11, which are uniformly arranged around the movable cavity 11. The grinding head 20 is in sliding fit with the side sliding groove 12, and the grinding head 20 can move along the radial direction of the main rod body 10 relative to the side sliding groove 12. The side sliding groove 12 enables the grinding head 20 to move stably, and the grinding head 20 is provided with a first inclined guide part 21. The elastic assembly 30 includes a top rod 31 and an elastic member 32. The top rod 31 is provided with a plurality of second inclined guide parts 33 in sliding fit with the first inclined guide part 21. The elastic member 32 is arranged in the movable cavity 11 and connected with the top rod 31. The grinding head 20 is pressed into the main rod body 10, and then the main rod body 10 is inserted into the pipe. The grinding head 20 is pressed to move along the radial direction of the main rod body 10 into the movable cavity 11. At this time, the second inclined guide part 33 slides relative to the first inclined guide part 21 to drive the top rod 31 to move. After the top rod 31 moves, the elastic member 32 will be elastically deformed. The elastic member 32 drives the grinding head 20 to move along the radial direction of the main rod body 10 out of the main rod body 10, so that the grinding head 20 is pressed against the inner wall of the pipe.

[0036] In some optional embodiments, the second inclined guide part 33 is arranged around the top rod 31 and in sliding fit with the first inclined guide part 21 of the plurality of grinding heads 20. The second inclined guide part 33 adopts an annular structure, which is convenient for production and is conducive to cooperation with the first inclined guide part 21, avoiding the rotation of the top rod 31 in the movable cavity 11 to make the first inclined guide part 21 and the second inclined guide part 33 disengage from each other.

[0037] In some optional embodiments, the main rod body 10 is provided with a guide hole 13, and part of the top rod 31 is inserted into the guide hole 13 and in sliding fit with the guide hole 13. The guide hole 13 guides the top rod 31 to move along the axial direction of the main rod body 10, improving the stability of the movement and position of the top rod 31, and avoiding the offset and shaking of the top rod 31 to cause different thrust forces on different grinding heads 20.

[0038] In some optional embodiments, the elastic member 32 is a spring, which is sleeved on the outside of the top rod 31, so as to facilitate the installation of the elastic member 32. Of course, the elastic member 32 can also adopt other suitable structures or installation methods.

[0039] In some optional embodiments, one end of the movable cavity 11 is provided with a first mounting opening 14, and a cover 15 is detachably arranged at the first mounting opening 14, and the cover 15 is provided with a avoiding hole 16; one side of the second inclined guide part 33 is formed with a limiting step 34, and the two ends of the elastic member 32 abut against the cover 15 and the limiting step 34 respectively, when the grinding head 20 moves along the radial direction of the main rod body 10 into the movable cavity 11 to drive the top rod 31 to move, the end of the top rod 31 passes through the avoiding hole 16 and extends out of the movable cavity 11, thereby avoiding the top rod 31, which is beneficial to shorten the size of the movable cavity 11, and in turn to reduce the size of the main rod body 10. In addition, since the length of the top rod 31 extending out of the avoiding hole 16 matches the distance of the grinding head 20 being pushed out of the movable cavity 11, and the grinding head 20 abuts against the inner wall of the pipe, the inner diameter of the pipe matches the distance of the grinding head 20 being pushed out of the movable cavity 11, that is, the inner diameter of the pipe matches the length of the top rod 31 extending out of the avoiding hole 16, and the user can observe the length of the top rod 31 extending out of the avoiding hole 16 to determine the change of the inner diameter of the pipe, thereby facilitating accurate control of the grinding process. In addition, a plurality of first scale marks can be arranged on the top rod 31, the plurality of first scale marks are arranged along the axial direction of the top rod 31, the portion of the top rod 31 extending out of the avoiding hole 16 can observe the first scale marks, and the first scale mark corresponding to the edge of the avoiding hole 16 corresponds to the current inner diameter of the pipe, thereby facilitating grinding determination.

[0040] In some optional embodiments, one end of the side sliding groove 12 towards the cover 15 is provided with a second mounting opening 17 for the grinding head 20 to pass through, the second mounting opening 17 extends along the axial direction of the main rod body 10 in a strip shape, the second mounting opening 17 is in communication with the first mounting opening 14, the cover 15 closes the first mounting opening 14 and the second mounting opening 17, and the first mounting opening 14 facilitates the installation and positioning of the grinding head 20. In this embodiment, one side of the cover 15 is formed with a mounting groove 18, the head end of the grinding head 20 and part of the main rod body 10 extend into the mounting groove 18, and the cover 15 limits the axial position of the grinding head 20 relative to the main rod body 10.

[0041] Please refer to Figure 7In some optional embodiments, the adjusting member 50 is movably arranged on the main rod body 10, and is in position-limiting cooperation with the grinding head 20 and can limit the maximum distance of the grinding head 20 moving outward along the radial direction of the main rod body 10. After the grinding head 20 is pressed into the movable cavity 11, the grinding head 20 is separated from the adjusting member 50, and the main rod body 10 is inserted into the pipe. During the grinding process of the grinding head 20, the grinding head 20 is pressed against the inner wall of the pipe under the pressing of the elastic assembly 30, and the inner diameter of the pipe is gradually expanded by the grinding of the grinding head 20. In order to facilitate the determination of the maximum inner diameter of the pipe that can be ground by the grinding head 20, when the grinding head 20 abuts against the adjusting member 50, the grinding head 20 cannot continue to move outward along the radial direction of the main rod body 10 due to the limitation of the adjusting member 50, so that the pipe cannot be continuously expanded in diameter. Therefore, the maximum inner diameter of the pipe that can be ground can be determined by the adjusting member 50.

[0042] In some optional embodiments, the adjusting member 50 is movably arranged on the main rod body 10, and is in position-limiting cooperation with the grinding head 20 and can limit the maximum distance of the grinding head 20 moving outward along the radial direction of the main rod body 10. After the grinding head 20 is pressed into the movable cavity 11, the grinding head 20 is separated from the adjusting member 50, and the main rod body 10 is inserted into the pipe. During the grinding process of the grinding head 20, the grinding head 20 is pressed against the inner wall of the pipe under the pressing of the elastic assembly 30, and the inner diameter of the pipe is gradually expanded by the grinding of the grinding head 20. In order to facilitate the determination of the maximum inner diameter of the pipe that can be ground by the grinding head 20, when the grinding head 20 abuts against the adjusting member 50, the grinding head 20 cannot continue to move outward along the radial direction of the main rod body 10 due to the limitation of the adjusting member 50, so that the pipe cannot be continuously expanded in diameter. Therefore, the maximum inner diameter of the pipe that can be ground can be determined by the adjusting member 50.

[0043] The specific structure of the adjusting member 50 can be designed according to actual needs. For example, in some optional embodiments, the adjusting member 50 includes a knob 52 and a lock nut 53, the lock nut 53 is in threaded cooperation with the main rod body 10 and is connected with the knob 52, the knob 52 is sleeved on the main rod body 10, the knob 52 is provided with a groove 54, the position-limiting portion 51 is arranged on the inner wall of the groove 54, and part of the third inclined guide portion 22 extends into the groove 54. Rotating the knob 52 causes the lock nut 53 to rotate relative to the main rod body 10, thereby adjusting the axial position of the knob 52 and the lock nut 53 on the main rod body 10, and thereby adjusting the position of the position-limiting portion 51. The adjusting operation is relatively convenient. In the present embodiment, the position-limiting portion 51 is an inclined annular taper surface, which abuts against the plurality of third inclined guide portions 22.

[0044] Although the embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the present application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A pipe inside diameter tool, comprising: The utility model relates to a grinding head assembly of a main rod body, a plurality of grinding heads, an elastic assembly and an adapter, and relates to the technical field of grinding head assemblies. The grinding heads are arranged on the outer circumferential portion of the main rod body, and a plurality of the grinding heads are uniformly arranged around the main rod body and can move in the radial direction of the main rod body; the elastic assembly is arranged on the main rod body and connected with the grinding heads; when the grinding heads move in the radial direction of the main rod body towards the inside of the main rod body, the elastic assembly is elastically deformed; the elastic force of the elastic assembly drives the grinding heads to move in the radial direction of the main rod body towards the outside of the main rod body; and the adapter is connected with the main rod body and used for being connected with a power assembly. The main rod body is provided with a movable cavity, and the outer circumferential portion of the main rod body is provided with a plurality of side sliding grooves that are in communication with the movable cavity and are uniformly arranged around the movable cavity.

2. A tool for deburring the inside diameter of a tube as defined in claim 1, wherein: The grinding heads are in sliding cooperation with the side sliding grooves, and the grinding heads can move in the radial direction of the main rod body relative to the side sliding grooves; the grinding heads are provided with first inclined guide portions. The elastic assembly comprises a top rod and an elastic piece; the top rod is provided with a plurality of second inclined guide portions; the second inclined guide portions are in sliding cooperation with the first inclined guide portions; the elastic piece is arranged in the movable cavity and connected with the top rod; when the grinding heads move in the radial direction of the main rod body towards the inside of the movable cavity, the second inclined guide portions slide relative to the first inclined guide portions to drive the top rod to move; after the top rod moves, the elastic piece is elastically deformed; and the elastic piece drives the grinding heads to move in the radial direction of the main rod body towards the outside of the main rod body through the top rod. The second inclined guide portions are arranged around the top rod and in sliding cooperation with the first inclined guide portions of a plurality of the grinding heads.

3. A pipe internal diameter tool as claimed in claim 2, wherein: The main rod body is provided with a guide hole, and part of the top rod extends into the guide hole and is in sliding cooperation with the guide hole.

4. A pipe internal diameter tool as claimed in claim 2, wherein: The elastic piece is a spring, and the spring is sleeved on the outside of the top rod.

5. A pipe internal diameter tool as defined in claim 2 wherein: One end of the movable cavity is provided with a first mounting opening, and a end cover is detachably arranged at the first mounting opening; the end cover is provided with an avoiding hole.

6. A pipe internal diameter tool as defined in claim 2, wherein: One side of the second inclined guide portion forms a limiting step, and the two ends of the elastic piece abut against the end cover and the limiting step, respectively; when the grinding heads move in the radial direction of the main rod body towards the inside of the movable cavity to drive the top rod to move, the end of the top rod passes through the avoiding hole and extends to the outside of the movable cavity. One end of the side sliding groove towards the end cover is provided with a second mounting opening through which the grinding heads pass; the second mounting opening is in communication with the first mounting opening; and the end cover closes the first mounting opening and the second mounting opening.

7. A pipe internal diameter tool as claimed in claim 6, wherein: An adjusting piece is movably arranged on the main rod body; the adjusting piece is in limiting cooperation with the grinding heads and can limit the maximum distance by which the grinding heads move in the radial direction of the main rod body towards the outside of the main rod body.

8. A tool for deburring the inside diameter of a tube according to any one of claims 1 to 7, characterized in that: An adjusting piece is movably arranged on the main rod body; the adjusting piece can move in the axial direction of the main rod body; and the adjusting piece is provided with a limiting portion.

9. A tool for deburring the inside diameter of a tube according to any one of claims 1 to 7, characterized in that: ​ The third inclined guide part is arranged on the grinding head, the limiting part is in limiting cooperation with the third inclined guide part, and the adjusting part limits the maximum distance of the movement of the grinding head along the radial direction of the main rod body to the outside of the main rod body by limiting the position of the third inclined guide part.

10. A pipe internal diameter tool as claimed in claim 9, wherein: The adjusting part comprises a knob and a lock nut, the lock nut is in threaded cooperation with the main rod body and is connected with the knob, the knob is sleeved on the main rod body, the knob is provided with a groove, the limiting part is arranged on the inner wall of the groove, and part of the third inclined guide part extends into the groove.

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