CN214396186U

CN214396186U - Rotary cutting tool

Info

Publication number: CN214396186U
Application number: CN202022035482.8U
Authority: CN
Inventors: 闵航; 刘少江
Original assignee: Saame Tools Shanghai Import & Export Co ltd
Current assignee: Saame Tools Shanghai Import & Export Co ltd
Priority date: 2020-09-16
Filing date: 2020-09-16
Publication date: 2021-10-15
Anticipated expiration: 2030-09-16

Abstract

The utility model provides a rotary cutting tool, it includes interconnect's cutting portion and the body of rod, the cutting portion includes the body of body portion and is fixed in the first cutter body and the second cutter body of body portion, first cutter body and second cutter body are fixed in the both sides of body portion respectively and in the direction dislocation set of perpendicular to body of body portion, first cutter body has first cutting edge, the second cutter body has the second cutting edge, keep away from the one end of the body of rod at the cutting portion, first cutting edge has the first portion, the second cutting edge has the second part, first portion and second part are adjacent to be set up in the direction of perpendicular to body of body portion.

Description

Rotary cutting tool

Technical Field

The utility model relates to the field of machining, especially, relate to a rotary cutting tool.

Background

Rotary cutting tools are unique tools designed for power engraving and are commonly used to create elegant chiseled textures on object surfaces. The rotary cutting tool in the prior art comprises a spherical body, an annular cutting knife arranged on the spherical body and a rod body extending from the spherical body, wherein the rod body is connected to a driving device, and the driving device drives the rotary cutting tool to work. When the rotary cutting tool is operated, the annular cutting blade provided to the spherical body can create a fine chiseled texture on the surface of the object. Because the rotary cutting tool in the prior art is only provided with the annular cutting knife, the area that the annular cutting knife can not cut is larger in the process of cutting the surface of an object by the annular cutting knife.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects of the prior art, the utility model provides a rotary cutting tool with simple structure and better operation performance, which aims to overcome the defects of the prior art.

The utility model provides a technical scheme that prior art problem adopted is: a rotary cutting tool comprises a cutting part and a rod body which are connected with each other, wherein the cutting part comprises a body part and a first cutter body and a second cutter body which are fixed on the body part, the first cutter body and the second cutter body are respectively fixed on two sides of the body part and are arranged in a staggered mode in the direction perpendicular to the body part, the first cutter body is provided with a first cutting edge, the second cutter body is provided with a second cutting edge, the first cutting edge is provided with a first part, the second cutting edge is provided with a second part, and the first part and the second part are arranged adjacently in the direction perpendicular to the body part.

Preferably, a projection of the first cutting edge in a direction perpendicular to the body portion is a first arc, a projection of the second cutting edge in a direction perpendicular to the body portion is a second arc, and the first arc and the second arc partially overlap.

Preferably, the first tool body further comprises a first base portion connected to the first cutting edge, the first base portion and the first cutting edge forming a first recess therebetween.

Preferably, the rotary cutting tool further includes a first mounting portion fixed to the body portion by a first fixing member, and a first mounting space is formed between the first mounting portion and the body portion, and the first base portion is mounted in the first mounting space.

Preferably, the rotary cutting tool further includes a third fixing member, the first base portion is provided with a third through hole, the first mounting portion is provided with a second through hole in correspondence, and the third fixing member is fixed to the body portion after passing through the second through hole and the third through hole in sequence.

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.

Preferably, the rotary cutting tool further includes a second mounting portion fixed to the body portion by a second fixing member, a second mounting space is formed between the second mounting portion and the body portion, and the second base portion is mounted in the second mounting space.

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

Preferably, the first cutting edge and the second cutting edge both rotate about a longitudinal axis of the rod.

Preferably, the first portion and the second portion each have an edge boundary point, and a moving trajectory of the edge boundary point of the first portion and a moving trajectory of the edge boundary point of the second portion are spliced into a circle during rotation of the first cutting edge and the second cutting edge about the longitudinal axis of the rod.

The utility model has the advantages that: the removal trajectory line of the blade boundary point of the first portion of first cutting edge splices into circularly with the removal trajectory line of the blade boundary point of the second portion of second cutting edge, and the region that this circular surrounded can not be cut by first cutting edge and second cutting edge, for the rotary cutting tool who only is provided with a cutting edge among the prior art, the utility model provides a rotary cutting tool can not cut the region of arriving less.

Drawings

The above objects, technical solutions and advantages of the present invention can be achieved by the following drawings.

Fig. 1 is a perspective view of a rotary cutting tool according to the present invention.

Fig. 2 is an exploded perspective view of the rotary cutting tool shown in fig. 1.

Fig. 3 is a further exploded perspective view of the rotary cutting tool of fig. 2.

Fig. 4 is a perspective view of the rotary cutting tool of fig. 1 from another perspective.

Fig. 5 is an exploded perspective view of the rotary cutting tool shown in fig. 4.

Fig. 6 is a further exploded perspective view of the rotary cutting tool of fig. 5.

Fig. 7 is a perspective view of the rotary cutting tool shown in fig. 1 from another perspective.

Fig. 8 is an enlarged view of the circled portion shown in fig. 7.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

As shown in fig. 1 to 8, the present invention provides a rotary cutting tool 100, which includes a cutting portion 10 and a rod 20 connected to each other, wherein the cutting portion 10 includes a body portion 11, a first mounting portion 12, a second mounting portion 13, a first cutter body 14, a second cutter body 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 portion 12 is fixed to the body portion 11 by a first fixing member 16, specifically, the first mounting portion 12 is provided with a first through hole 121, and the first fixing member 16 is fixed to the body portion 11 after passing through the first through hole 121. The second mounting portion 13 is fixed to the main body 11 by a second fixing member 17, specifically, the second mounting portion 13 is provided with a fourth through hole 131, and the second fixing member 17 is fixed to the main body 11 after passing through the fourth through hole 131. The first and second mounting

portions

12 and 13 are fixed to opposite sides of the body portion 11. The first blade 14 is formed in a disk shape having a predetermined angle and fixed between the first mounting portion 12 and the main body portion 11 by a third fixing member 18, and the second blade 15 is fixed between the second mounting portion 13 and the main body portion 11 by a fourth fixing member 19. The shaft 20 includes a first end 21 and a second end 22 which are oppositely disposed, the first end 21 of the shaft 20 is connected to the body 11, the second end 22 of the shaft 20 is connected to a driving device (not shown), the driving device drives the rotary cutting tool 100 to operate, and when the rotary cutting tool 100 operates, the first cutter 14 and the second cutter 15 of the cutting portion 10 start to create a chiseled texture on the surface of the object.

The first cutter 14 includes a first base 141 having a plate shape with a certain angle and a first cutting edge 142 having a circular arc shape connected to a circular arc side edge of the first base 141, a first groove 143 is formed between the first base 141 and the first cutting edge 142, and both the first cutting edge 142 and the first groove 143 have a circular arc shape. After the first mounting portion 12 is fixed to the body portion 11, a sheet-shaped first mounting space 30 is formed between the first mounting portion 12 and the body portion 11 within a certain angle range, the first base 141 of the first cutter body 14 is mounted in the first mounting space 30 in a manner of adapting to the first mounting space 30, and the first cutting edge 142 and the first groove 143 are located outside the first mounting space 30, so that the first cutting edge 142 is exposed for cutting. The specific implementation and installation mode is as follows: the first mounting portion 12 is provided with a second through hole 122, the first base portion 141 is provided with a third through hole 144, and the third fixing element 18 passes through the second through hole 122 and the third through hole 144 in sequence to fix the first cutter body 14 to the body portion 11.

The second blade body 15 includes a sheet-shaped second base 151 having a certain angle and a circular arc-shaped second cutting edge 152 connected to a circular arc-shaped side edge of the second base 151, a second groove 153 is formed between the second base 151 and the second cutting edge 152, and both the second cutting edge 152 and the second groove 153 are circular arc-shaped. After the second mounting portion 13 is fixed to the body portion 11, a second mounting space 40 (the shape is the same as the first mounting space 30 but the vertical plane symmetry is 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 portion 151 is mounted in the second mounting space 40, the second cutting edge 152 and the second groove 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 portion 151 is provided with a sixth through hole 154, and the fourth fixing member 19 passes through the fifth through hole 132 and the sixth through hole 154 in sequence to fix the second cutter body 15 to the body portion 11.

When the first blade 14 and the second blade 15 are mounted on the body 11, the cutting portion 10 is generally spherical, the first cutting edge 142 of the first blade 14 and the second cutting edge 152 of the second blade 15 are provided on the outer peripheral surface of the sphere, and the first cutting edge 142 and the second cutting edge 152 rotate with the rotation of the cutting portion 10, the movement locus of the first cutting edge 142 is a spherical surface shape with a hollow end portion, the movement locus of the second cutting edge 152 is a spherical surface shape with a hollow end portion, and the hollow regions of the two spherical surfaces overlap.

When the driving device drives the rotary cutting tool 100 to work, the cutting portion 10 rotates around the longitudinal axis of the rod 20, the first cutting edge 142 of the first cutter body 14 and the second cutting edge 152 of the second cutter body 15 rotate around the longitudinal axis of the rod 20, and the first cutting edge 142 and the second cutting edge 152 cut on the surface of the object during the rotation of the first cutting edge 142 and the second cutting edge 152. The shaft 20 of the rotary cutting tool 100 may be placed in any direction, i.e., the cutting part 10 may rotate in any direction, and in this embodiment, the shaft 20 of the rotary cutting tool 100 is disposed in an oblique direction, i.e., the cutting part 10 rotates in an oblique direction.

As shown in fig. 7 and 8, the first cutting edge 142 and the first groove 143 of the first cutter 14 are both arc-shaped and surround the outer sides of the body 11 and the first mounting portion 12, the second cutting edge 152 and the second groove 153 of the second cutter 15 are both arc-shaped and surround the outer sides of the body 11 and the second mounting portion 13, and the first cutter 14 and the second cutter 15 are located on both sides of the body 11 and are offset from each other in a direction perpendicular to the body 11. The projections of the first cutting edge 142 of the first cutter body 14 and the second cutting edge 152 of the second cutter body 15 in the direction perpendicular to the body portion 11 have an overlapping portion, that is, the projection of the first cutting edge 142 in the direction perpendicular to the body portion 11 is a first arc, the projection of the second cutting edge 152 in the direction perpendicular to the body portion 11 is a second arc, the projection of the first cutting edge 142 and the second cutting edge 152 in the direction perpendicular to the body portion 11 is a combination of the first arc and the second arc, the first arc and the second arc partially overlap, and the overlapping portion of the first arc and the second arc is located at one end of the cutting portion 10 away from the rod body 20. Specifically, the first cutting edge 142 has a first portion 145, the second cutting edge 152 has a second portion 155, the first portion 145 and the second portion 155 are adjacently disposed in a direction perpendicular to the body portion 11 at an end of the cutting portion 10 away from the shaft 20, and a distance between an edge boundary point a of the first portion 145 and an edge boundary point B of the second portion 155 is L. During the rotation of the first cutting edge 142 around the longitudinal axis of the rod 20, the moving track of the edge boundary point a of the first cutting edge 142 forms a semicircular track line, and during the rotation of the second cutting edge 152 around the longitudinal axis of the rod 20, the moving track of the edge boundary point B of the second cutting edge 152 also forms a semicircular track line, the two semicircular track lines are spliced into a circle with the diameter of the distance L, and the area surrounded by the circle cannot be cut by the first cutting edge 142 and the second cutting edge 152.

The utility model provides a rotary cutting tool 100, the removal orbit of the blade boundary point A of the first cutting edge 142 of first cutter body 14 splices into the circular of taking distance L as the diameter with the removal orbit of the blade boundary point B of the second cutting edge 152 of second cutter body 15, the region that this circular surrounds can not be cut by first cutting edge 142 and second cutting edge 152, for the rotary cutting tool who only is provided with a cutting edge among the prior art, the region that rotary cutting tool 100 in the invention can not cut is smaller, therefore no matter the too big or undersize of angle of tool operator's convenient operation, all do not influence the chisel effect of cutting tool 100, consequently in the in-process that the operator used this instrument, can switch over or select the operation angle at will.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express the embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. A rotary cutting tool comprises a cutting part and a rod body which are connected with each other, and is characterized in that the cutting part comprises a body part, a first cutter body and a second cutter body, wherein the first cutter body and the second cutter body are fixed on two sides of the body part respectively and are arranged in a staggered mode in the direction perpendicular to the body part, the first cutter body is provided with a first cutting edge, the second cutter body is provided with a second cutting edge, the first cutting edge is provided with a first portion, the second cutting edge is provided with a second portion, and the first portion and the second portion are arranged in an adjacent mode in the direction perpendicular to the body part.

2. The rotary cutting tool of claim 1, wherein a projection of the first cutting edge in a direction perpendicular to the body portion is a first arc, and a projection of the second cutting edge in a direction perpendicular to the body portion is a second arc, the first arc partially overlapping the second arc.

3. The rotary cutting tool of claim 1, wherein the first insert body further comprises a first base portion connected to the first cutting edge, the first base portion and the first cutting edge forming a first recess therebetween.

4. The rotary cutting tool according to claim 3, further comprising a first mounting portion and a first fixing member, the first mounting portion being fixed to the body portion by the first fixing member, a first mounting space being formed between the first mounting portion and the body portion, the first base portion being mounted to the first mounting space.

5. The rotary cutting tool according to claim 4, further comprising a third fixing member, wherein the first base portion is provided with a third through hole, the first mounting portion is provided with a corresponding second through hole, and the third fixing member is fixed to the body portion after passing through the second through hole and the third through hole in this order.

6. The rotary cutting tool of claim 1, wherein the second cutter body further comprises a second base portion connected to the second cutting edge, the second base portion and the second cutting edge forming a second recess therebetween.

7. The rotary cutting tool according to claim 6, further comprising a second mounting portion and a second fixing member, the second mounting portion being fixed to the body portion by the second fixing member, a second mounting space being formed between the second mounting portion and the body portion, the second base portion being mounted to the second mounting space.

8. The rotary cutting tool according to claim 7, further comprising a fourth fixing member, wherein the second base portion is provided with a sixth through hole, the second mounting portion is provided with a corresponding fifth through hole, and the fourth fixing member is fixed to the body portion after passing through the fifth through hole and the sixth through hole in this order.

9. The rotary cutting tool of claim 1, wherein the first cutting edge and the second cutting edge both rotate about a longitudinal axis of the shank.

10. The rotary cutting tool according to claim 9, wherein the first portion and the second portion each have an edge boundary point, and a movement trajectory line of the edge boundary point of the first portion and a movement trajectory line of the edge boundary point of the second portion are spliced into a circle during rotation of the first cutting edge and the second cutting edge about the longitudinal axis of the rod body.