Rotary cutting tool

Abstract

The present application provides a rotary cutting tool, which comprises a cutting part and a rod body connected with each other, the cutting part comprises a body part and a first cutter body and a second cutter body fixed to the body part, the first cutter body and the second cutter body are respectively fixed to two sides of the body part and are arranged in a staggered manner in a direction perpendicular to the body part, the first cutter body has a first cutting edge, the second cutter body has a second cutting edge, at one end of the cutting part away from the rod body, the first cutting edge has a first part, the second cutting edge has a second part, and the first part and the second part are arranged adjacent to each other in the direction perpendicular to the body part.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of mechanical processing, in particular to a rotary cutting tool. BACKGROUND

[0002] The rotary cutting tool is a unique tool designed for power carving, and is generally used to create exquisite carved textures on the surface of an object. The rotary cutting tool in the prior art comprises a spherical body, an annular cutting blade arranged on the spherical body, and a rod body extending from the spherical body, the rod body being connected to a driving device, and the driving device driving the rotary cutting tool to work. When the rotary cutting tool works, the annular cutting blade arranged on the spherical body can create exquisite carved textures on the surface of an object. Since the rotary cutting tool in the prior art is provided with only one annular cutting blade, the area that cannot be cut by the annular cutting blade during the cutting process of the annular cutting blade on the surface of an object is relatively large. SUMMARY

[0003] In order to overcome the defects of the prior art, the present application provides a rotary cutting tool with simple structure and better operation performance to overcome the defects of the prior art.

[0004] The technical scheme adopted by the present application to solve the problems of the prior art is as follows: a rotary cutting tool comprises a cutting part and a rod body connected to each other, the cutting part comprises a body part and a first blade body and a second blade body fixed to the body part, the first blade body and the second blade body are respectively fixed to two sides of the body part and are arranged in a staggered manner in a direction perpendicular to the body part, the first blade body has a first cutting edge, the second blade body has a second cutting edge, at one end of the cutting part away from the rod body, the first cutting edge has a first part, the second cutting edge has a second part, and the first part and the second part are arranged adjacent to each other in the direction perpendicular to the body part.

[0005] Preferably, a projection of the first cutting edge in the direction perpendicular to the body part is a first circular arc, a projection of the second cutting edge in the direction perpendicular to the body part is a second circular arc, and the first circular arc and the second circular arc partially overlap.

[0006] Preferably, the first blade body further comprises a first base part connected to the first cutting edge, and a first groove is formed between the first base part and the first cutting edge.

[0007] Preferably, the rotary cutting tool further comprises a first mounting part and a first fixing member, the first mounting part is fixed to the body part through the first fixing member, a first mounting space is formed between the first mounting part and the body part, and the first base part is mounted in the first mounting space.

[0008] Preferably, the rotary cutting tool further comprises a third fixing member, the first base is provided with a third through hole, the first mounting portion is correspondingly provided with a second through hole, and the third fixing member is fixed to the body portion in sequence through the second through hole and the third through hole.

[0009] Preferably, the second cutter body further comprises a second base connected to the second cutting edge, and a second groove is formed between the second base and the second cutting edge.

[0010] Preferably, the rotary cutting tool further comprises a second mounting portion and a second fixing member, the second mounting portion is fixed to the body portion through the second fixing member, a second mounting space is formed between the second mounting portion and the body portion, and the second base is mounted in the second mounting space.

[0011] Preferably, the rotary cutting tool further comprises a fourth fixing member, the second base is provided with a sixth through hole, the second mounting portion is correspondingly provided with a fifth through hole, and the fourth fixing member is fixed to the body portion in sequence through the fifth through hole and the sixth through hole.

[0012] Preferably, the first cutting edge and the second cutting edge both rotate around the longitudinal axis of the rod body.

[0013] Preferably, the first portion and the second portion both have a blade edge boundary point, and in the process of rotating the first cutting edge and the second cutting edge around the longitudinal axis of the rod body, the movement trajectory line of the blade edge boundary point of the first portion and the movement trajectory line of the blade edge boundary point of the second portion are spliced into a circle.

[0014] The beneficial effects of the present application are that the movement trajectory line of the blade edge boundary point of the first portion of the first cutting edge and the movement trajectory line of the blade edge boundary point of the second portion of the second cutting edge are spliced into a circle, the area surrounded by the circle cannot be cut by the first cutting edge and the second cutting edge, and compared with the rotary cutting tool with only one cutting edge in the prior art, the area that cannot be cut by the rotary cutting tool in the present application is relatively small. BRIEF DESCRIPTION OF DRAWINGS

[0015] The above-mentioned purposes, technical solutions and beneficial effects of the application can be achieved through the following drawings.

[0016] Figure 1 is a perspective view of the rotary cutting tool in the present application.

[0017] Figure 2 is Figure 1 is a perspective exploded view of the rotary cutting tool shown in the figure.

[0018] Figure 3 is Figure 2A further exploded perspective view of the rotary cutting tool shown.

[0019] Figure 4 yes Figure 1 The diagram shows a three-dimensional structure of the rotary cutting tool from another perspective.

[0020] Figure 5 yes Figure 4 An exploded perspective view of the rotary cutting tool shown.

[0021] Figure 6 yes Figure 5 A further exploded perspective view of the rotary cutting tool shown.

[0022] Figure 7 yes Figure 1 A three-dimensional structural diagram of the rotary cutting tool from another perspective.

[0023] Figure 8 yes Figure 7 Enlarged view of the circled area shown. Detailed Implementation

[0024] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0025] like Figures 1 to 8 As shown, the present invention provides a rotary cutting tool 100, which includes a cutting part 10 and a rod body 20 connected to each other. The cutting part 10 includes a body part 11, a first mounting part 12, a second mounting part 13, a first cutting tool 14, a second cutting tool 15, a first fixing member 16, a second fixing member 17, a third fixing member 18, and a fourth fixing member 19. The first mounting part 12 is fixed to the body part 11 by the first fixing member 16. Specifically, the first mounting part 12 is provided with a first through hole 121, through which the first fixing member 16 passes and is fixed to the body part 11. The second mounting part 13 is fixed to the body part 11 by the second fixing member 17. Specifically, the second mounting part 13 is provided with a fourth through hole 131, through which the second fixing member 17 passes and is fixed to the body part 11. The first mounting part 12 and the second mounting part 13 are fixed to opposite sides of the body part 11. The first cutting body 14 is generally in the shape of a circular plate at a certain angle and is fixed between the first mounting part 12 and the main body 11 by the third fixing member 18. The second cutting body 15 is fixed between the second mounting part 13 and the main body 11 by the fourth fixing member 19. The rod 20 includes a first end 21 and a second end 22 arranged opposite to each other. The first end 21 of the rod 20 is connected to the main body 11, and the second end 22 of the rod 20 is connected to the drive device (not shown). The drive device drives the rotary cutting tool 100 to work. When the rotary cutting tool 100 works, the first cutting body 14 and the second cutting body 15 of the cutting part 10 begin to create chiseled textures on the surface of the object.

[0026] The first cutter body 14 comprises a first base 141 in the shape of an angle sheet and a first cutting edge 142 in the shape of a circular arc connected to the circular arc side edge of the first base 141, a first recess 143 is formed between the first base 141 and the first cutting edge 142, and the first cutting edge 142 and the first recess 143 are both in the shape of a circular arc. The first mounting portion 12 is fixed to the body portion 11, a first mounting space 30 in the shape of an angle sheet within a certain angle range is formed between the first mounting portion 12 and the body portion 11, the first base 141 of the first cutter body 14 is mounted in the first mounting space 30, and the first cutting edge 142 and the first recess 143 are both located outside the first mounting space 30 to expose the first cutting edge 142 for cutting. The mounting is achieved in the following manner: the first mounting portion 12 is provided with a second through hole 122, the first base 141 is provided with a third through hole 144, and the third fixing member 18 is sequentially inserted through the second through hole 122 and the third through hole 144 to fix the first cutter body 14 to the body portion 11.

[0027] The second cutter body 15 comprises a second base 151 in the shape of an angle sheet and a second cutting edge 152 in the shape of a circular arc connected to the circular arc side edge of the second base 151, a second recess 153 is formed between the second base 151 and the second cutting edge 152, and the second cutting edge 152 and the second recess 153 are both in the shape of a circular arc. The second mounting portion 13 is fixed to the body portion 11, a second mounting space 40 (which is the same as the first mounting space 30 but is symmetrical with respect to the vertical plane defined by the central axis of the first end 21) is formed between the second mounting portion 13 and the body portion 11, the second base 151 is mounted in the second mounting space 40, and the second cutting edge 152 and the second recess 153 are both located outside the second mounting space 40. Specifically, the second mounting portion 13 is further provided with a fifth through hole 132, the second base 151 is provided with a sixth through hole 154, and the fourth fixing member 19 is sequentially inserted through the fifth through hole 132 and the sixth through hole 154 to fix the second cutter body 15 to the body portion 11.

[0028] After the first cutter body 14 and the second cutter body 15 are mounted to the body portion 11, the cutting portion 10 is generally in the shape of a sphere, and the first cutting edge 142 of the first cutter body 14 and the second cutting edge 152 of the second cutter body 15 are arranged on the outer circumferential surface of the sphere. When the cutting portion 10 is rotated, the first cutting edge 142 and the second cutting edge 152 are rotated, the movement track of the first cutting edge 142 is in the shape of a spherical surface with a hollow end, the movement track of the second cutting edge 152 is also in the shape of a spherical surface with a hollow end, and the hollow regions of the two spherical surfaces coincide.

[0029] When the driving device drives the rotary cutting tool 100 to work, the cutting part 10 rotates around the longitudinal axis on which the rod body 20 is located, the first cutting edge 142 of the first blade 14 and the second cutting edge 152 of the second blade 15 rotate around the longitudinal axis on which the rod body 20 is located, and the first cutting edge 142 and the second cutting edge 152 cut the object surface in the process of rotating. The rod body 20 of the rotary cutting tool 100 can be placed in any direction, that is, the cutting part 10 can rotate in any direction. In the embodiment, the rod body 20 of the rotary cutting tool 100 is arranged in an inclined direction, that is, the cutting part 10 rotates in an inclined direction.

[0030] In combination Figure 7 With Figure 8 As shown in the drawings, the first cutting edge 142 of the first blade 14 and the first groove 143 are both arc-shaped and surround the outside of the body part 11 and the first mounting part 12, the second cutting edge 152 of the second blade 15 and the second groove 153 are both arc-shaped and surround the outside of the body part 11 and the second mounting part 13, and the first blade 14 and the second blade 15 are located on both sides of the body part 11 and are arranged in a staggered manner in a direction perpendicular to the body part 11. The projection of the first cutting edge 142 of the first blade 14 and the second cutting edge 152 of the second blade 15 in a direction perpendicular to the body part 11 has an overlapping part, that is, the projection of the first cutting edge 142 in a direction perpendicular to the body part 11 is a first arc, the projection of the second cutting edge 152 in a direction perpendicular to the body part 11 is a second arc, the projection of the first cutting edge 142 and the second cutting edge 152 in a direction perpendicular to the body part 11 is a combination of the first arc and the second arc, the first arc and the second arc partially overlap, and the overlapping part of the first arc and the second arc is located at the end of the cutting part 10 away from the rod body 20. Specifically, the first cutting edge 142 has a first part 145, the second cutting edge 152 has a second part 155, at the end of the cutting part 10 away from the rod body 20, the first part 145 and the second part 155 are arranged adjacent to each other in a direction perpendicular to the body part 11, and the distance between the edge boundary point A of the first part 145 and the edge boundary point B of the second part 155 is L. In the process of rotating the first cutting edge 142 around the longitudinal axis on which the rod body 20 is located, the moving track of the edge boundary point A of the first cutting edge 142 forms a semicircular track, and in the process of rotating the second cutting edge 152 around the longitudinal axis on which the rod body 20 is located, the moving track of the edge boundary point B of the second cutting edge 152 also forms a semicircular track. The two semicircular tracks are spliced into a circle with the above distance L as the diameter, and the area surrounded by the circle cannot be cut by the first cutting edge 142 and the second cutting edge 152.

[0031] The moving track of the edge boundary point A of the first cutting edge 142 of the first tool body 14 and the moving track of the edge boundary point B of the second cutting edge 152 of the second tool body 15 are spliced into a circle with the distance L as the diameter, the area surrounded by the circle cannot be cut by the first cutting edge 142 and the second cutting edge 152, compared with the rotary cutting tool in the prior art which is only provided with one cutting edge, the area which cannot be cut by the rotary cutting tool 100 in the present application is smaller, thus no matter the angle of the tool operator is too large or too small, it does not affect the chiseling effect of the cutting tool 100, thus in the process of using the tool by the operator, the operation angle can be switched or selected at will.

[0032] The technical features of the above-described embodiments can be combined in any manner. To make the description concise, all possible combinations of the technical features in the above-described embodiments are not described, but as long as the combinations of the technical features do not exist contradictions, they should be considered as the scope of the present disclosure.

[0033] The above-described embodiments only express the implementation of the present application, the description is more specific and detailed, but it should not be understood as a limitation on the scope of the present patent. It should be pointed out that for those skilled in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which are all within the scope of the present application. Therefore, the scope of the present application should be subject to the appended claims.

Claims

1. A rotary cutting tool, comprising a cutting section and a rod body interconnected, characterized in that, The cutting part includes a main body and a first cutter body and a second cutter body fixed to the main body. The first cutter body and the second cutter body are respectively fixed to both sides of the main body and are offset in a direction perpendicular to the main body. The first cutter body has a first cutting edge and the second cutter body has a second cutting edge. At the end of the cutting part away from the rod, the first cutting edge has a first part and the second cutting edge has a second part. The first part and the second part are adjacent to each other in a direction perpendicular to the main body. The projection of the first cutting edge in a direction perpendicular to the main body is a first arc and the projection of the second cutting edge in a direction perpendicular to the main body is a second arc. The first arc and the second arc partially overlap. The movement trajectory of the first cutting edge is a spherical shape with a hollow end, and the movement trajectory of the second cutting edge is also a spherical shape with a hollow end. The hollow areas of the two spheres coincide.

2. The rotary cutting tool according to claim 1, characterized in that, The first tool body further includes a first base connected to the first cutting edge, and a first groove is formed between the first base and the first cutting edge.

3. The rotary cutting tool according to claim 2, characterized in that, The rotary cutting tool further includes a first mounting part and a first fixing member. The first mounting part is fixed to the body part by the first fixing member. A first mounting space is formed between the first mounting part and the body part. The first base is mounted in the first mounting space.

4. The rotary cutting tool according to claim 3, characterized in that, The rotary cutting tool further includes a third fixing member. The first base is provided with a third through hole, and the first mounting part is provided with a corresponding second through hole. The third fixing member passes through the second through hole and the third through hole in sequence and is then fixed to the body part.

5. The rotary cutting tool according to claim 1, characterized in that, The second blade also includes a second base connected to the second cutting edge, and a second groove is formed between the second base and the second cutting edge.

6. The rotary cutting tool according to claim 5, characterized in that, The rotary cutting tool further includes a second mounting part and a second fixing member. The second mounting part is fixed to the body part by the second fixing member, and a second mounting space is formed between the second mounting part and the body part. The second base is mounted in the second mounting space.

7. The rotary cutting tool according to claim 6, characterized in that, The rotary cutting tool further includes a fourth fixing member. The second base is provided with a sixth through hole, and the second mounting part is provided with a corresponding fifth through hole. The fourth fixing member passes through the fifth through hole and the sixth through hole in sequence and is then fixed to the body part.

8. The rotary cutting tool according to claim 1, characterized in that, Both the first cutting edge and the second cutting edge rotate around the longitudinal axis of the rod.

9. The rotary cutting tool according to claim 8, characterized in that, Both the first part and the second part have cutting edge boundary points. During the process of the first cutting edge and the second cutting edge rotating around the longitudinal axis of the rod body, the movement trajectory lines of the cutting edge boundary points of the first part and the movement trajectory lines of the cutting edge boundary points of the second part are spliced ​​together to form a circle.

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