JP3207057U - Cutting tool with anti-vibration function - Google Patents

Abstract

A cutting tool capable of suppressing vibration during machining is provided. A vibration-proof cutting tool has a main body portion, a vibration-proof member, a fixing member, and a cutting portion. The vibration-proof member 20 is attached to the inside of the main body portion 10 and has a specific gravity of the main body portion. The center anti-vibration rod 21 set larger than the specific gravity of the central anti-vibration rod, the two caps 22 attached to both ends of the central anti-vibration rod, and disposed so as to surround the central anti-vibration rod And having two or more auxiliary vibration isolating rods 23 whose both ends are coupled to two caps, and the fixing member 40 is provided at one end where the vibration isolating member of the main body is installed. The fixing part 42 to be coupled is provided, and the cutting part 50 includes a cutter 51 attached to the fixing part of the fixing member. The center anti-vibration rod and the auxiliary anti-vibration rod whose specific gravity is larger than the specific gravity of the main body part attenuates the vibration generated by the cutting process. [Selection] Figure 2

Description

  The present invention relates to a cutting tool, and more particularly to a cutting tool that can suppress vibration during processing.

  Conventionally, the rigidity of a cutting tool is insufficient, a large reaction force is received in a moment, or if the frequency of the reaction force is close to the frequency of the cutting process, vibration is generated during the process. Normally, when machining a workpiece with a cutting tool, vibration is an accessory, but it does not have a significant effect on cutters that are short, but it is difficult to process workpieces that are long. Not only is the efficiency lowered, the surface of the workpiece becomes rough and machining traces remain, but there is also a problem of noise.

  However, since conventional cutting tools do not have a function to suppress vibration, when cutting a large workpiece or a high hardness workpiece, the cutter vibrates greatly, resulting in poor product quality. It was.

The present invention has been made to solve the problem, and an object thereof is to provide a cutting tool having a vibration isolating function.
The cutting tool with anti-vibration function of the present invention is
A cutting fluid injection hole having a first end portion and a second end portion having a flat end surface, and formed therein in an axial direction so as to extend from the first end portion to the second end portion, and a cutting fluid injection A main body portion including an anti-vibration member housing portion formed in the axial direction so as to communicate with the hole;
A center anti-vibration rod that is formed through the inside in the axial direction and has a passage formed so as to communicate with the cutting fluid injection hole, and whose specific gravity is set larger than that of the main body, Two caps attached to both ends of the rod, and placed between the two caps and arranged to surround the center anti-vibration rod, the specific gravity is set larger than the specific gravity of the main body, the two ends An anti-vibration member comprising two or more auxiliary anti-vibration rods coupled to the cap;
A fixing member having a fixing part coupled to the second end of the main body part;
And a cutting portion including a cutter attached to the fixing portion of the fixing member.

In such a vibration-proof cutting tool,
It further has a limit member in which a through hole penetrating in the axial direction is formed,
A mounting hole for attaching the limit member is formed in the main body portion adjacent to the vibration-proof member housing portion in the axial direction,
It is preferable that the limit member is attached to the attachment hole so that the through hole communicates with the passage of the central vibration isolation rod of the vibration isolation member.

In such a vibration-proof cutting tool,
The center anti-vibration rod includes an intermediate portion and two insertion portions coaxially located at both ends,
Each of the caps has a center hole penetrating in the axial direction, and is preferably attached to the two insertion portions of the center anti-vibration rod through the center hole and is in contact with both ends of the intermediate portion.

In such a vibration-proof cutting tool,
A flat end surface directed in the opposite direction is formed on each of the insertion portions of the central anti-vibration rod,
It is preferable that a seal ring groove is provided in each of the flat end faces so as to surround the passage of the center anti-vibration rod coaxially, and in a concave shape to install the seal ring.

In such a vibration-proof cutting tool,
Each of the caps is preferably provided with a concave seal ring groove on the outer peripheral surface thereof.

In such a vibration-proof cutting tool,
Each of the caps has two opposite side surfaces, and includes a plurality of fitting recesses arranged around the center hole on one side surface thereof,
It is preferable that each of the auxiliary vibration-isolating rods is installed so that both ends thereof are inserted into the fitting recesses of the caps facing each other.

In such a vibration-proof cutting tool,
Six auxiliary anti-vibration rods are installed,
Each of the caps has six recessed recesses,
It is preferable that six auxiliary anti-vibration rods are inserted in the six fitting recesses of each cap.

In such a vibration-proof cutting tool,
The central vibration isolation rod and the auxiliary vibration isolation rod are preferably made of a tungsten alloy.

  In the cutting tool with an anti-vibration function of the present invention, the center anti-vibration rod and the auxiliary anti-vibration rod of the anti-vibration member are manufactured from a material whose specific gravity is larger than the specific gravity of the main body, so that the anti-vibration member cuts off the work. Vibration can be suppressed, the processing efficiency can be improved, and noise can be suppressed.

It is a perspective view of the cutting tool with a vibration isolating function concerning the present invention. It is a partial exploded perspective view of the cutting tool with a vibration isolating function concerning the present invention. It is sectional drawing of the vibration proof member in the cutting tool with a vibration proof function which concerns on this invention. It is a fragmentary sectional view of the cutting tool with a vibration isolating function concerning the present invention. It is another fragmentary sectional view of the cutting tool with a vibration isolating function concerning the present invention.

  Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In addition, the following Example is only what showed the preferred embodiment of this invention, and the technical scope of this invention is not limited to the following Example itself at all.

  As shown in FIGS. 1, 2, and 4, the cutting tool with a vibration isolating function according to the present invention includes a main body 10, a vibration isolating member 20 accommodated in the main body 10, and a vibration isolating member 20. The limit member 30 is abutted and attached to the inside of the main body 10, the fixing member 40 is coupled to the main body 10, and the cutting portion 50 is fixed to the fixing member 40. As shown in FIG. 4, the main body 10, the vibration isolating member 20, the limit member 30, the fixing member 40, and the cutting part 50 are each assembled coaxially along the central axis C.

  The main body portion 10 has a first end portion and a second end portion having a flat end surface, and is formed in the main body portion 10 in the axial direction from the first end portion of the main body portion 10 to the second end portion. A cutting fluid injection hole 11 formed so as to extend in the axial direction, a through hole 12 formed so as to communicate with the cutting fluid injection hole 11 in the axial direction and having an inner diameter smaller than the inner diameter of the cutting fluid injection hole 11, and an axial direction Is formed inside the body portion 10 so as to communicate with the through hole 12, communicates with the cutting fluid injection hole 11 through the through hole 12, and accommodates a vibration isolating member whose inner diameter is larger than the inner diameter of the cutting fluid injection hole 11. The mounting hole 14 is formed in the axial direction so as to be adjacent to the portion 13 and the vibration isolator housing portion 13, and is formed in the axial direction so as to be adjacent to the mounting hole 14. A housing hole 15 extending to the end surface of the second end of the main body 10 and four screw holes 1. When, and a four inserted holes 17.

  The four screw holes 16 are formed from the end surface of the second end portion of the main body portion 10 to the first end portion at an equal angle around the accommodation hole 15, and the four insertion holes 17 are formed in the main body portion 10. Are formed at an equal angle around the receiving hole 15 so as to be positioned between the two screw holes 16 adjacent to the first end portion from the end face of the second end portion.

  As shown in FIGS. 2 to 4, the anti-vibration member 20 is accommodated in the anti-vibration member accommodating portion 13 of the main body portion 10, and includes a central anti-vibration rod 21, two caps 22, and six auxiliary anti-vibration components. The center anti-vibration rod 21 is located at both ends of the rod 23 and has a cylindrical shape. The two end portions 211 are flat and end in opposite directions. Both ends of the center vibration isolating rod 21 are coaxially connected to the insertion portion 211, and have a cylindrical intermediate portion 212 having a diameter larger than the diameter of the insertion portion 211, and the central vibration isolation rod 21 so as to penetrate in the axial direction. A passage 213 that is formed inside and extends between the end surfaces of the two insertion portions 211, and is provided coaxially and concavely around the passage 213 in the end surface of each insertion portion 211, for installing a seal ring Two seal ring grooves 214 Eteiru.

  As shown in FIGS. 2 to 5, each cap 22 is a disk-shaped member having an outer peripheral surface and two side surfaces on the opposite side, and a center hole 221 formed so as to penetrate the cap 22 in the axial direction. , Six fitting recesses 222 formed at equal angles around the center hole 221 respectively on one side surface of the cap 22, and a concave shape on the outer peripheral surface of the cap 22, and a seal ring for installing a seal ring. -A ring groove 223 is provided. Each of the two caps 22 is attached to the two insertion portions 211 so as to contact both ends of the intermediate portion 212 of the center antivibration rod 21 through the respective center holes 221.

  Each auxiliary anti-vibration rod 23 is inserted into two fitting recesses 222 corresponding to the two caps 22 at both ends, so that the six auxiliary anti-vibration rods 23 are equiangular and around the central anti-vibration rod 21. Be placed. The specific gravity of the center vibration isolation rod 21 and the specific gravity of each auxiliary vibration isolation rod 23 are larger than the specific gravity of the main body 10. In the present embodiment, the center vibration isolation rod 21 and the six auxiliary vibration isolation rods 23 of the vibration isolation member 20 are preferably made of a tungsten alloy.

  As shown in FIGS. 2 and 4, the limit member 30 has a disk shape, and has a thread for screwing formed on the outer peripheral surface thereof, and a through hole 31 penetrating in the axial direction. The limit member 30 is screwed into the mounting hole 14 of the main body portion 10 so that the through hole 31 communicates with the passage 213 of the central vibration isolation rod 21 of the vibration isolation member 20, and the vibration isolation member housing portion 13 of the main body portion 10. The separation of the vibration isolating member 20 accommodated in the vibration isolating member accommodating portion 13 can be limited.

  As shown in FIG. 2 and FIG. 4, the fixing member 40 is coupled to the second end portion of the main body portion 10, and four positioning pins 41 inserted into the four insertion holes 17 of the main body portion 10, and the outer periphery And a flange having four engaging holes 4211, four insertion holes 4212, and two fitting recesses 4213. The fixing part 42 provided with the part 421, the positioning part 422, and the insertion part 423, the four coupling bolts 43, and the four pin caps 44 are provided. Each of the four engagement holes 4211 penetrates from the first end surface of the flange portion 421 to the second end surface and is arranged at an equal angle in the vicinity of the periphery of the flange portion 421, and each of the four insertion holes 4212 includes The flange portion 421 is provided in a concave shape from the second end surface to the first end surface, and is disposed at an equal angle so as to be positioned between two adjacent engagement holes 4211. The two fitting recesses 4213 are disposed at both ends in the diametrical direction, and are formed by being cut out in the radial direction from the outer peripheral surface of the flange portion 421 on the first end surface.

  As shown in FIGS. 2 and 4, the positioning portion 422 includes a pressing hole 4221 and is continuously provided on the first end surface of the flange portion 421 in the axial direction so as to be surrounded by the four engaging holes 4211. It is cylindrical. The pressing hole 4221 is provided in a concave shape from the end face of the positioning portion 422 to the flange portion 421 in the axial direction, and a screw thread for screwing is formed on the inner peripheral surface of the pressing hole 4221. The insertion portion 423 has a cylindrical shape and is continuous with the second end surface of the flange portion 421 in the axial direction so as to be surrounded by the four engagement holes 4211 and the four insertion holes 4212. The fixing portion 42 is combined with the main body portion 10 by inserting the insertion portion 423 into the receiving hole 15 of the main body portion 10. The four insertion holes 4212 of the flange portion 421 are combined with the positioning pins 41 inserted into the insertion holes 17 of the main body portion 10. It is provided continuously

  As shown in FIG. 2, the four coupling bolts 43 are respectively inserted into the four engagement holes 4211 of the flange portion 421 and screwed into the four screw holes 16 of the main body portion 10. Each of the four pin caps 44 is fitted into the four engagement holes 4211.

  As shown in FIGS. 2 and 4, the cutting unit 50 includes a cutter 51, two fitting blocks 52, a pressing member 53, and a pressing bolt 54. The cutter 51 is attached to the fixing portion 42 of the fixing member 40, and includes a fitting portion 511 and a cutting portion 512. The fitting portion 511 has a cylindrical shape having a peripheral surface and a flat end surface, and is fitted in the axial direction. A positioning hole 5111 formed so as to penetrate the end surface of the joint portion 511 and a concave shape so as to penetrate the end surface of the fitting portion 511 from the circumferential surface in the radial direction, and communicate with the positioning hole 5111 respectively. Two fitting recesses 5112 formed on opposite sides of the fitting portion 511 in the diameter direction are provided. The cutting portion 512 is coaxially provided in the fitting portion 511 and is provided in a concave shape in the center of the cutting portion 512 in the axial direction. The cutting portion 512 is provided in the axial direction so as to communicate with the receiving hole 5121 having the bottom and the positioning hole 5111. And a screw hole 5122 formed in the bottom of the accommodation hole 5121. The positioning hole 5111 of the fitting portion 511 of the cutter 51 is mounted on the positioning portion 422 of the fixing portion 42 of the fixing member 40 so that the two fitting recesses 5112 face the two fitting recesses 4213.

  As shown in FIGS. 2 and 4, the two fitting blocks 52 are respectively engaged with the two fitting recesses 5112 while being accommodated in the two fitting recesses 4213, and each of the fitting blocks 52 has a bolt. By inserting and screwing into the bottom of the fitting recess 4213, it is fixed to the corresponding fitting recess 4213. The pressing member 53 is installed in the receiving hole 5121 of the cutting portion 512 of the cutter 51, has a short cylindrical shape, and has a short cylindrical shape having a first end portion and a second end portion facing each other. The pressing member 53 is provided in a concave shape from the first end portion to the second end portion, and is formed on the second end portion of the pressing member 53 from the bottom portion of the receiving recess portion 531 in the axial direction. And a through hole 532. The pressing bolt 54 is inserted into the receiving recess 531 of the pressing member 53, the insertion hole 532, and the screwing hole 5122 of the cutting part 512 of the cutter 51 and screwed into the pressing hole 4221 of the positioning part 422 of the fixing part 42. The

  In the cutting tool with an anti-vibration function of the present invention, the center anti-vibration rod 21 and the auxiliary anti-vibration rod 23 of the anti-vibration member 20 are manufactured from a material having a specific gravity greater than that of the main body 10. The vibration generated by the cutting work can be attenuated by the center vibration isolating rod 21 and the auxiliary vibration isolating rod 23, and the vibration can be suppressed, so that the quality of the machining can be improved and the noise can be reduced. In addition, since both ends of each auxiliary vibration isolating rod 23 are fitted and inserted into the two caps 22, an operator can adjust the quantity and position of the auxiliary vibration isolating rod 23 according to the necessity of processing. Further, the two sealing rings installed at both ends of the central anti-vibration rod 21 and the sealing rings installed on the two caps 22 allow the cutting fluid for cutting to be coupled to each member through the cutting fluid injection hole 11. It can prevent leaking from the place.

DESCRIPTION OF SYMBOLS 10 Main-body part 11 Cutting fluid injection hole 12 Through-hole 13 Anti-vibration member accommodating part 14 Mounting hole 15 Accommodating hole 16 Screw hole 17 Insertion hole 20 Anti-vibration member 21 Center anti-vibration rod 22 Cap 23 Auxiliary anti-vibration rod 30 Limit member 31 Through hole 40 Fixing member 41 Positioning pin 42 Fixing part 43 Coupling bolt 44 Pin cap 50 Cutting part 51 Cutter 52 Insertion block 53 Pressing member 54 Pressing bolt 211 Inserting part 212 Intermediate part 213 Passage 214 Sealing groove 221 Central hole 222 Insertion recessed part 223 Seal ring groove 421 Flange part 422 Positioning part 423 Insertion part 511 Fitting part 512 Cutting part 531 Housing recessed part 532 Insertion hole 4211 Engagement hole 4212 Insertion hole 4213 Engagement recess 4221 Pressing hole 5111 Positioning hole 5112 Insertion recess 5121 Yoana 5122 threaded 設穴

Claims (8)

A main body portion having a first end portion and a second end portion having a flat end surface, and extending into the main body portion from the first end portion to the second end portion. The main body portion provided with a cutting fluid injection hole formed in the axial direction and a vibration isolation member housing portion formed in the axial direction so as to communicate with the cutting fluid injection hole,
A center anti-vibration rod formed through the inside in the axial direction and having a passage formed so as to communicate with the cutting fluid injection hole, the specific gravity being set larger than the specific gravity of the main body, and the center Two caps attached to both ends of the anti-vibration rod, and are disposed between the two caps and arranged to surround the central anti-vibration rod, and the specific gravity is set larger than the specific gravity of the main body. An anti-vibration member comprising two or more auxiliary anti-vibration rods having both ends coupled to the two caps;
A fixing member comprising a fixing part coupled to the second end of the main body part;
A cutting part comprising a cutter attached to the fixing part of the fixing member;
A cutting tool with an anti-vibration function. The vibration-proof cutting tool further has a limit member in which a through-hole penetrating in the axial direction is formed,
The body portion is an attachment hole adjacent to the vibration-proof member accommodating portion in the axial direction, and the attachment hole for attaching the limit member is formed.
The cutting tool with a vibration isolating function according to claim 1, wherein the limit member is attached to the attachment hole so that the through hole communicates with a passage of a central vibration isolating rod of the vibration isolating member. The central anti-vibration rod includes an intermediate portion and two insertion portions arranged coaxially at both ends of the central anti-vibration rod;
Each of the caps has a central hole penetrating in the axial direction, and is attached to two insertion portions of the central anti-vibration rod through the central hole, and at both ends of the intermediate portion. The cutting tool with an anti-vibration function according to claim 2, wherein the cutting tool is in contact. A flat end surface facing in the opposite direction is formed on each of the insertion portions of the central anti-vibration rod,
A seal ring groove that is coaxially formed so as to surround the passage of the central anti-vibration rod, and the seal ring groove for installing a seal ring is provided in a concave shape on each of the flat end surfaces. The cutting tool with an anti-vibration function according to claim 3.   The cutting tool with an anti-vibration function according to claim 4, wherein a sealing ring groove for installing the sealing ring is provided in a concave shape on the outer peripheral surface of each of the caps. Each of the caps has both side surfaces, and one of the side surfaces is formed with a plurality of fitting recesses arranged around the center hole,
6. The anti-vibration function according to claim 5, wherein each of the auxiliary anti-vibration rods is installed so that both ends of the auxiliary anti-vibration rod are inserted into the fitting recesses of the cap facing each other. With cutting tool. Six auxiliary vibration isolating rods are installed,
Each of the caps has six fitting recesses,
The cutting tool with a vibration isolating function according to claim 6, wherein the six auxiliary vibration isolating rods are inserted into the six fitting recesses of each of the caps.   The cutting tool with an anti-vibration function according to claim 7, wherein the central anti-vibration rod and the auxiliary anti-vibration rod are made of a tungsten alloy.

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