CN114433949B

CN114433949B - Deburring tool and deburring method

Info

Publication number: CN114433949B
Application number: CN202011217970.9A
Authority: CN
Inventors: 武藤充; 堀智章
Original assignee: Sugino Machine Ltd
Current assignee: Sugino Machine Ltd
Priority date: 2020-11-04
Filing date: 2020-11-04
Publication date: 2024-05-14
Anticipated expiration: 2040-11-04
Also published as: CN114433949A

Abstract

The invention provides a deburring tool and a deburring method without a positioning and clamping part clamped with a fixed part of a machine tool. The deburring tool includes a housing having a shank, a transfer lever, a restoring lever, a tilting lever, a spring, a bracket, and a rotary-to-linear motion conversion mechanism having a plunger. The tilting lever includes a second flange portion facing the first flange portion of the restoring lever, a receiving portion through which the transmitting lever passes, and a spherical sleeve having a tilting center on the stem, and is capable of tilting about the tilting center. The spring biases the restoring rod toward the tilting rod. The holder for fixing the tool is disposed on the tilting lever so as to be rotatable by a predetermined rotation angle. The rotation-translation mechanism separates the first flange portion from the second flange portion when the holder is rotated in a direction opposite to a rotation direction of the handle, and brings the plunger into contact with the return lever on the tilting shaft.

Description

Deburring tool and deburring method

Technical Field

The invention relates to a deburring tool and a deburring method.

Background

There is proposed a deburring tool comprising: a shank mounted to a spindle of a machine tool; a tool holding member that rotates integrally with the shank; and a support member that supports the tool holding member so as to be tiltable with respect to the shank, the support member having a tilting urging member that urges the tool holding member toward the shank (patent document 1).

Prior art literature

Patent literature

Patent document 1: japanese patent laid-open No. 2009-214234

Disclosure of Invention

When deburring is performed using the deburring tool of patent document 1, there is a case where the tool vibrates. The invention provides a deburring tool and a deburring method, wherein the tool is not easy to vibrate.

In the 1 st aspect of the present invention, a deburring tool is characterized by comprising:

a housing having a stem, a seat surface, and a mechanism chamber disposed along a stem;

A restoring rod having a first flange portion capable of reciprocating along the stem;

A tilting lever disposed along a tilting shaft passing through the tilting center and capable of tilting about the tilting center, the tilting lever including a second flange portion disposed opposite to the first flange portion, and a spherical sleeve supported by the seat surface and having a tilting center on the stem;

An elastic member that biases the return lever toward the tilting lever;

a holder which is disposed on the tilting lever so as to be rotatable by a predetermined rotation angle with respect to the tilting lever, and which fixes a cutter;

A rotation-translation mechanism that is provided with a plunger that is movable along the tilting shaft on the bracket, and that separates the first flange portion from the second flange portion when the bracket is rotated in a direction opposite to the rotation direction of the handle, and that brings the plunger into contact with the return lever on the tilting shaft; and

And a rotation transmission mechanism that transmits rotation of the housing to the tilting lever.

In the 2 nd aspect of the present invention, a deburring method is characterized in that:

A rotation transmission mechanism transmits the rotation of the housing to the tilting lever,

When the tilting lever is not processed, the first flange part of the tilting lever is forced towards the second flange part of the tilting lever,

In the course of the processing of the steel sheet,

The holder holding the tool is rotated relative to the tilting lever in a direction opposite to the rotation direction of the tool by a cutting resistance received from the workpiece,

The rotation-translation conversion mechanism converts the rotation of the bracket to move the plunger toward the restoring rod side,

The plunger pushes up the restoring rod, contacts with the restoring rod on the tilting shaft, the first flange part is separated from the second flange part,

The tool that rotates integrally with the tilting lever cuts the workpiece.

The deburring tool is mounted on a machine tool such as a machining center or a turning center and used as a rotary tool. The handle of the deburring tool is arranged on the main shaft of the machine tool, and the whole deburring tool rotates together with the main shaft of the machine tool.

For convenience of explanation, the side on which the tool is mounted is referred to as the distal end side, and the side on which the shank is disposed is referred to as the proximal end side.

The restoring rod, the spherical sleeve, the seat surface, the bracket, the plunger and the cutter are arranged on a stem shaft serving as a central shaft of the stem.

The guide holes and the transmission rods are equally distributed circumferentially on a cylindrical surface centered on the stem.

The receiving portions may be arranged in the same number as the transfer rods so as to be equally distributed circumferentially on the cylindrical surface centered on the tilting shaft. The receptacle may have an abutment surface on a plane passing through the stem.

The tool receives cutting resistance when the tool is in contact with the workpiece. The holder holding the tool is rotated relative to the tilting lever in a direction opposite to the rotation direction of the deburring tool by the cutting resistance received by the tool from the workpiece. The rotation amount is determined according to the construction of the rotation-direct-motion conversion mechanism.

Furthermore, the tool may comprise a brush.

The rotary-to-linear motion conversion mechanism has a plunger. The plunger moves along a tilting shaft as a central shaft of the tilting lever. As the holder rotates in a direction opposite to the rotation direction, the plunger is pushed in the base end direction by the rotation-translation mechanism. The plunger reciprocates at a defined rotational angle relative to the carriage with a constructively defined stroke.

When the holder rotates in a direction opposite to the rotation direction of the deburring tool, the plunger pushes up the restoring rod against the urging force of the elastic member. The plunger pushes up the recovery lever to separate the first flange portion and the second flange portion. The top of the plunger is in contact with the return lever on the tilting shaft, and the tilting lever can tilt freely.

When the holder is rotated to an end in a direction opposite to the rotation direction of the deburring tool, the top of the plunger contacts the restoring rod near the tilting center.

The rotation-translation mechanism is, for example, a cylindrical groove cam mechanism. The cylindrical slot cam mechanism includes a cam pin and a plunger. The plunger has a cam groove, and is disposed inside the holder so as to be capable of reciprocating and non-rotatable. The plunger moves along the tilting axis. The top of the plunger is located on the tilting shaft. The cam pin extends perpendicularly to the tilting shaft and is fixed to the tilting lever. The cam slot preferably extends through the plunger. The cam groove has an opening describing a spiral on a cylindrical surface of the plunger.

The cam pin slides in the cam groove.

The bracket has a pivot hole extending in a fan shape centering on the tilting axis on a plane perpendicular to the tilting axis. The cam pin penetrates the swivel hole. The center angle of the turning hole is equal to or more than the rotation angle of the cam groove.

As the holder rotates relative to the tilt lever in the direction of rotation of the tool, the plunger moves in the tip direction. When the plunger is positioned at the tip end portion in the tip direction, the first flange portion is in contact with the second flange portion. Preferably, at this time the top of the plunger abuts the recovery lever.

When the cutter is not contacted with the workpiece, the restoring rod presses down the plunger by the force of the spring. When the plunger is depressed, the rotation-translation mechanism rotates the holder relative to the tilting lever in the rotation direction of the deburring tool. Thereby, the holder and the plunger return to the initial positions. Then, the first flange portion is in contact with the second flange portion. At this time, the tilting lever cannot tilt.

The rotation transmitting mechanism may include a rolling groove, a rolling element holding portion, and a rolling element. The rolling grooves, the rolling element holding portions, and the rolling elements are arranged in the same number and uniformly on the circumference. The rolling groove is disposed in the mechanism chamber along an arc intersecting a spherical surface centered on the tilting center and a plane passing through the stem. The rolling groove is a circular groove. The rolling bodies are balls. The rolling element holding portion is a circular hole having a bottom and is disposed on an outer surface of the second flange portion. The balls serving as rolling elements are disposed between the rolling element holding portion and the rolling groove to roll. The rolling elements are sandwiched between the rolling element holding portion and the rolling groove, and cannot rotate relative to the second flange portion around the tilting shaft. Therefore, the rotation of the housing is transmitted to the tilting lever via the rolling element, the rolling groove, and the rolling element holding portion.

Further, the rolling element holding portion may be disposed on an inner cylindrical surface of the mechanism chamber, and the rolling groove may be disposed on an outer peripheral portion of the second flange portion.

The rolling element holding portion may be disposed on the spherical sleeve, and the rolling groove may be disposed on the seat surface. Further, the rolling element holding portion may be disposed on the seat surface, and the rolling groove may be disposed on the spherical sleeve.

Further, the first flange and the rotary translational mechanism may be omitted. In this case, an inclination restoring mechanism may be provided. The tilt restoring mechanism is, for example, a compression spring disposed equally circumferentially between the mechanism chamber and the base end portion side of the outer peripheral portion of the second flange portion.

Effects of the invention

According to the present invention, a deburring tool and a deburring method in which the tool is less likely to vibrate can be provided.

Drawings

Fig. 1 is a longitudinal sectional view of a deburring tool in the non-processing of embodiment 1.

Fig. 2 is a sectional view of fig. 1 taken along line II-II.

Fig. 3 is a sectional view taken along line III-III of fig. 1.

Fig. 4 is a cross-sectional view taken along line IV-IV of fig. 1.

Fig. 5 is a cross-sectional view of the V-V line of fig. 1.

Fig. 6 is a perspective view of the plunger of embodiment 1.

Fig. 7 is an explanatory view of the movement stroke of the plunger.

Fig. 8 is a longitudinal sectional view of the deburring tool at the time of processing of embodiment 1.

Fig. 9 is a cross-sectional view taken along line IX-IX of fig. 8.

Fig. 10 is an X-X sectional view of fig. 8.

Fig. 11 is a longitudinal sectional view of the deburring tool in a state where the tilting lever is tilted.

Fig. 12 is a longitudinal sectional view of the deburring tool of embodiment 2 in the non-processing.

Fig. 13 is a sectional view taken along line XIII-XIII of fig. 1.

Fig. 14 is a longitudinal sectional view of the deburring tool in the non-processing of embodiment 3.

FIG. 15 is a cross-sectional view taken along line XV-XV of FIG. 14.

Description of the reference numerals

1 Outer casing

11 Handles

13 Mechanism room

14 Seat surface

15 Stem

24 Spherical sleeve

25 Center of tilting

3 Transfer rod

34 Bulge part

4 Tilting lever

41 Second flange portion

41A receiving portion

41B contact surface

43 Tilting shaft

5 Resume bar

51 First flange portion

51A guide hole

6 Spring (elastic component)

61 Adjusting screw

7 Support

71 Annular groove

72 Ball

76 Rotation stop pin (rotation stop mechanism)

8 Plunger piston

81 Top part

83 Slot (rotation stopping mechanism)

84 Cam pin (rotating direct action conversion mechanism)

85 Cam groove (rotating direct motion conversion mechanism)

87 Rotation stopping mechanism

9-Rotation direct-acting conversion mechanism

10. 100, 200 Deburring tool

101 Cutter

Detailed Description

(Embodiment 1)

As shown in fig. 1, the deburring tool 10 of the present embodiment includes a housing 1 having a handle 11, a tilting lever 4, a recovery lever (recovery rod) 5, a spring 6, a bracket 7, a spherical sleeve (bush) 24, and a rotation-to-translation mechanism 9. The rotation-translation mechanism 9 includes a plunger 8, a cam groove 85, a cam pin 84, and a rotation-stopping mechanism 87. The rotation transmission mechanism 30 includes a set of transmission rods 3 and a receiving portion 41a. The deburring tool 10 may have a guide hole 51a.

In the deburring tool 10, the shank 11 is attached to a spindle (not shown) of a machine tool such as a machining center, and the deburring tool 10 is used as a whole by rotating integrally with the tool 101.

Hereinafter, for convenience of explanation, the direction along the stem 15 or the tilting shaft 43 may be referred to as the up-down direction.

The housing 1 includes a main body 12, a mechanism chamber 13, and a seating surface 14. The housing 1 may also have an adjustment screw 61. The shank 11 is, for example, a straight shank. The stem 11 extends along a stem 15.

The main body 12 is disposed on the distal end side of the handle 11. The main body 12 is cylindrical with the stem 15 as a center.

The mechanism chamber 13 is a stepped cylinder centered on the stem 15, and is developed inside the stem 11 and the main body 12. The mechanism chamber 13 has a small diameter portion 13a disposed at the base end portion and a large diameter portion 13b disposed at the distal end portion. A sleeve 53 may be disposed in the small diameter portion 13 a. The small diameter portion 13a may have an opening 13c on the base end side of the stem 11. The opening 13c is provided with a female screw 11a. The adjustment screw 61 is screwed into the internal thread 11a.

The seat surface 14 is a straight conical surface-like inner surface that is disposed at the distal end portion of the mechanism chamber 13 and reduces in diameter toward the distal end side. The seating surface 14 may be a concave spherical surface.

The spherical sleeve 24 has a spherical surface 24a as a convex surface. The center of the spherical surface 24a is a tilting center 25. The spherical surface 24a is inscribed with the seating surface 14. The spherical sleeve 24 slides over the seat surface 14.

The transmission rod 3 includes a shaft portion 33 and a bulging portion 34. The transmission lever 3 is disposed in the mechanism chamber 13 in parallel with the stem 15. A plurality of transmission rods 3 are arranged on the circumference of a straight cylindrical surface 16 (see fig. 2) centered on the stem 15. The transfer rods 3 may be arranged at equal intervals on the circumference. The transfer rods 3 are arranged, for example, in5 to 7. The transfer lever 3 is fixed to the housing 1. The transmission rod 3 penetrates the guide hole 51a and the receiving portion 41a.

The outer surface of the bulge 34 is a convex spherical surface. The center of the bulge 34 is arranged on a plane perpendicular to the stem 15 and passing through the tilting center 25 of the tilting lever 4. The bulging portion 34 is disposed in the receiving portion 41a with a play of a certain amount.

The recovery lever 5 includes a shaft (stem) 52, a first flange portion 51, and a guide hole 51a. The first flange 51 is a circular plate centered on the stem 15. The restoring rod 5 may include a convex portion 56, an abutment portion 54, and a sleeve 55. The protruding portion 56 is cylindrical and is disposed at the distal end portion of the first flange portion 51. The concave portion 51b is disposed on the stem 15 at the distal end portion of the convex portion 56. The abutment portion 54 is attached to the recess 51b. The top end surface 54a of the abutment 54 is a plane perpendicular to the stem 15. The distal end surface 54a may protrude toward the distal end side or may be recessed toward the proximal end side, or may be flush with the outer peripheral portion of the first flange portion 51.

The shaft 52 is cylindrical and disposed in the small diameter portion 13 a. The shaft 52 is slidably supported by the small diameter portion 13a or the sleeve 53.

The guide holes 51a are arranged in the same number as the transfer bars 3. The guide hole 51a is a cylindrical hole, and is disposed in the first flange 51. The guide hole 51a extends parallel to the stem 15 and is disposed on the circumference of the straight cylindrical surface 16. The sleeve 55 is disposed on the inner diameter of the guide hole 51 a.

The transmission rod 3 penetrates the guide hole 51a. The shaft 33 slides in the guide hole 51a or the sleeve 55.

The restoring rod 5 can reciprocate in the up-down direction so that the shaft 52 is guided by the small diameter portion 13a and the guide hole 51a is guided by the shaft portion 33.

The spring 6 is, for example, a coil spring or a disc spring. The spring 6 biases the restoring rod 5 in the tip direction. The spring 6 is supported by the restoring rod 5 and the adjusting screw 61. The adjustment screw 61 adjusts the initial length of the spring 6.

The tilting lever 4 includes a lever portion 42, a second flange portion 41, and a set of receiving portions 41a. The tilting lever 4 extends along a tilting shaft 43. The tilting shaft 43 passes through the tilting center 25. The tilting lever 4 is supported on the seat surface 14 via a spherical sleeve 24.

The rod 42 is hollow and cylindrical. The lever portion 42 is disposed on the distal end side of the second flange portion 41, and extends downward of the housing 1. The second flange 41 is a circular plate centered on the tilting shaft 43.

The receiving portion 41a is disposed on the second flange portion 41.

The receiving portion 41a is a hole penetrating the second flange portion 41 in the up-down direction. As shown in fig. 2, the receiving portions 41a are equally arranged on a straight cylindrical surface 44 centered on the tilting shaft 43. The diameter of the straight cylindrical surface 44 is the same as the diameter of the straight cylindrical surface 16. The receiving portions 41a are arranged in the same number as the transfer bars 3. The receiving portion 41a has an abutment surface 41b. The contact surface 41b is a wall surface of the receiving portion 41a on the rotation direction side of the cutter 101. The abutment surface 41b forms a part of a plane (for example, a plane) including the tilting shaft 43. The contact surface 41b is disposed corresponding to the position of the transmission lever 3. For example, when the transmission rods 3 are equally circumferentially arranged, the contact surfaces 41b are also equally circumferentially arranged. The receiving portion 41a is rectangular, for example, when viewed in the axial direction of the tilting shaft 43. The receiving portion 41a is sized so that the transfer lever 3 does not contact a portion other than the contact surface 41b when the tilting lever 4 tilts.

As shown in fig. 1 and 5, the bracket 7 is disposed radially inward of the lever portion 42. The bracket 7 is supported so as to be capable of rotating the pivot angle 78 (see fig. 4) about the tilting shaft 43 while suppressing movement in the axial direction of the tilting shaft 43.

The deburring tool 10 may include a ball holding hole 42a, an annular groove 71, and a ball 72.

The ball holding hole 42a is disposed in the lever portion 42. The ball holding holes 42a extend in the radial direction, and are formed in a plurality (2 in fig. 5) at equal intervals on the circumference.

The annular groove 71 has a substantially semicircular longitudinal section, and extends in the circumferential direction of the bracket 7. The annular groove 71 may be disposed over the entire circumference.

The balls 72 are held between the ball holding holes 42a and the annular groove 71, and roll in the annular groove 71.

The ball holding hole 42a may extend in the radial direction to penetrate the rod portion 42. In this case, the holding cylinder 73 is disposed radially outward of the ball holding hole 42 a. The holding cylinder 73 is formed in a hollow cylindrical shape and is disposed outside the ball holding hole 42 a. The balls 72 are held by a holding cylinder 73.

As shown in fig. 1 and 4, the bracket 7 includes a holding hole 74 and a rotation hole 77, and has a hollow cylindrical shape.

The holding hole 74 is a cylindrical hole extending along the tilting shaft 43. The holding hole 74 penetrates the bracket 7.

The swivel hole 77 extends along a plane perpendicular to the tilting shaft 43. Referring to fig. 4, the rotation hole 77 is fanned out centering on the tilting shaft 43. The center angle at which the swivel hole 77 spreads out is a swivel angle 78.

The width of the turning hole 77 in the up-down direction is larger than the diameter of the cam pin 84. The turning angle 78 is a rotation angleThe above.

The holder 7 may have a collet 75. The collet 75 is attached to the distal end portion of the holding hole 74. The collet 75 holds the cutter 101. For example, the holding hole 74 has an internal thread 74a, and the collet 75 has an external thread 75a on its outer peripheral portion. The collet 75 is threadably secured by internal threads 74 a.

As shown in fig. 6, the plunger 8 is formed in a shell shape, and includes a barrel 82, a top 81, and a cam groove 85. The plunger 8 is disposed inside the holding hole 74.

The cylindrical portion 82 is a cylinder centered on the tilting shaft 43. The barrel 82 may be hollow. The cylindrical portion 82 slides with the holding hole 74.

The top 81 is arranged to protrude from the base end side of the tubular portion 82. The top 81 is hemispherical. The top 81 abuts against the abutment 54. The center of the top 81 is disposed on the tilting shaft 43.

The cam groove 85 is a spiral groove. The cam groove 85 penetrates the plunger 8 in a direction orthogonal to the tilting shaft 43. The cam groove 85 has an opening 85a in the cylindrical surface 82a of the cylinder 82. The opening 85a is formed so as to draw a spiral along the cylindrical surface 82 a. The opening 85a is oriented toward the tip direction as it rotates in the rotation direction of the cutter 101. For example, when the cutter 101 rotates clockwise as viewed from the proximal end direction, the opening 85a is a spiral rising rightward. As shown in fig. 7, the cam groove 85 satisfies the following equation.

Here the number of the elements is the number,

A: lead angle of spiral groove

Rotation angle (rad)

D: diameter of plunger (part of cam groove)

L: travel of plunger

For example, the lead angle A is 15 DEG to 20 DEG, and the rotation angle A is a rotation angle60-120 Deg. The width of the cam groove 85 is substantially equal to the diameter of the cam pin 84.

When the plunger 8 is positioned at the end in the base end direction, the apex 86 of the top 81 is positioned in the vicinity of the tilting center 25.

The rotation stop mechanism 87 limits the rotation of the plunger 8 relative to the holder 7. The rotation stopping mechanism 87 includes, for example, a holding hole 79, a long hole 83, and a rotation stopping pin 76.

As shown in fig. 1 and 3, the holding hole 79 is disposed in the bracket 7. The holding hole 79 extends perpendicularly to the tilting shaft 43 and penetrates the bracket 7. The inner diameter of the retaining hole 79 is substantially the same as the rotation stop pin 76.

The long hole 83 is disposed in the plunger 8. The long hole 83 penetrates the tube 82 in a direction orthogonal to the tilting shaft 43. The long hole 83 extends along the tilting shaft 43. The length of the long hole 83 in the up-down direction is substantially the same as the movement stroke L of the plunger 8.

The stopper pin 76 is supported by the holding hole 79. The stopper pin 76 is disposed on the bracket 7 so as to extend in the radial direction of the bracket 7. The rotation stop pin 76 penetrates the long hole 83. The stopper pin 76 slides with the long hole 83.

The plunger 8 is restrained from rotating relative to the holder 7 and is movable in the axial direction.

As shown in fig. 4, the cam pin 84 extends in the radial direction and is disposed on the lever portion 42. Cam pin 84 may be secured to stem 42. The cam pin 84 penetrates the rotation hole 77 and the cam groove 85. The cam pin 84 slides with the rotation hole 77 and the cam groove 85.

The operation of the deburring tool 10 of the present embodiment will be described.

The shank 11 is attached to a spindle (not shown) of a machine tool. The housing 1 rotates together with the spindle. The rotation of the housing 1 is transmitted to the tilting lever 4 via the transmission lever 3. The cutter 101, the holder 7, and the tilting lever 4 integrally rotate.

As shown in fig. 1, when the tool 101 is not in contact with the workpiece 103 (see fig. 8), the first flange 51 is brought into contact with the second flange 41 by the elastic force of the spring 6, and the second flange 41 is biased. Is held in a state in which the tilting shaft 43 coincides with the stem 15.

The machine tool moves the deburring tool 10 while rotating. The tool 101 is in contact with the workpiece 103. Then, the cutter 101 receives cutting resistance, and the holder 7 rotates with respect to the tilting lever 4 in a direction opposite to the rotation direction of the deburring tool 10. As shown in fig. 8 to 10, the plunger 8 is moved in the proximal direction by rotating the translational movement switching mechanism 9. The plunger 8 pushes the restoring rod 5 in the direction of the base end. The first flange portion 51 is separated from the second flange portion 41. The top 81 is in contact with the contact portion 54 on the tilting shaft 43 in a state where the tilting shaft 43 coincides with the stem 15. The tilting lever 4 is tiltable.

In which the bracket 7 is rotated by a rotation angle relative to the tilting lever 4When this occurs, the plunger 8 moves to the proximal end. The contact position between the top 81 and the contact portion 54 is near the tilting center 25.

With the movement of the spindle, the tool 101 cuts the workpiece 103 while moving along the ridge line of the workpiece 103. At this time, the restoring rod 5 is biased toward the tip end of the tilting rod 4 via the plunger 8 and the cam pin 84 by the elastic force of the spring 6. The spherical sleeve 24 is supported so as to slide with the seat surface 14, and the tilt lever 4 can tilt about a tilt center 25 (see fig. 11).

When the tool 101 is moved away from the workpiece 103 again, the tool 101 is not subjected to cutting resistance. Then, the restoring rod 5 is pressed down toward the tip end direction against the plunger 8 by the elastic force of the spring 6. The restoring rod 5 smoothly moves so that the shaft 52 is guided by the sleeve 53 and the guide hole 51a is guided by the shaft 33. As the plunger 8 moves in the tip direction, the holder 7 rotates in the rotation direction of the cutter 101 with respect to the tilting lever 4. The first flange 51 abuts against the second flange 41. As the tip end direction of the restoring rod 5 moves, the inclination of the tilting shaft 43 with respect to the stem 15 decreases. The restoring rod 5 and the plunger 8 reach the tip-directional end. The tilting shaft 43 coincides with the stem 15.

(Embodiment 2)

As shown in fig. 12 and 13, the deburring tool 100 of the present embodiment includes a rotation transmission mechanism 102 instead of the rotation transmission mechanism 30 shown in fig. 1 and 2. The rotation transmission mechanism 102 includes a set of rolling grooves 121, a set of ball retaining holes 122, and balls 123.

The rolling groove 121 is disposed on the cylindrical inner circumferential surface 13f of the mechanism chamber 13. The rolling groove 121 is arranged on a plane passing through the stem 15. Specifically, the rolling groove 121 is disposed so as to extend vertically at an intersection between a plane passing through the stem 15 and a spherical surface having a radius R around the tilting center 25. The cross section of the rolling groove 121 is semicircular. Here, the cross section refers to a section perpendicular to the direction in which the rolling groove 121 extends. The rolling grooves 121 are equally distributed circumferentially around the stem 15.

The ball holding hole 122 is, for example, a right circular cone. The ball holding holes 122 are disposed on the outer peripheral portion 45 so as to be equally distributed circumferentially on a plane passing through the tilting center 25 and perpendicular to the tilting shaft 43. The number of ball holding holes 122 is the same as the number of rolling grooves 121.

The balls 123 are disposed between the ball holding holes 122 and the rolling grooves 121. The balls 123 are held in the ball holding holes 122 and roll in the rolling grooves 121.

The rotation of the housing 1 is transmitted to the tilting lever 4 via the rolling groove 121, the ball 123, and the ball holding hole 122. In other words, the ball 123 restricts relative rotation between the rolling groove 121 and the ball holding hole 122 about the stem 15, and transmits rotation of the housing 1 to the tilting lever 4.

The rolling groove 121 may be disposed on the outer peripheral portion 45 of the second flange portion 41, and the ball holding hole 122 may be disposed on the cylindrical inner peripheral surface 13f of the mechanism chamber 13. In this case, the rolling grooves 121 are equally arranged on a plane passing through the tilting shaft 43 around the tilting shaft 43 in the outer peripheral portion 45 of the second flange portion 41. The ball holding holes 122 are uniformly arranged around the stem 15 on a plane perpendicular to the stem 15 on the cylindrical inner peripheral surface 13f of the mechanism chamber 13.

(Embodiment 3)

As shown in fig. 14 and 15, the deburring tool 200 of the present embodiment includes a rotation transmission mechanism 202 instead of the rotation transmission mechanism 30 shown in fig. 1 and 2. Except for this, the deburring tool 200 has the same structure as the deburring tool 100.

The rotation transmitting mechanism 202 includes a set of rolling grooves 221, a set of ball retaining holes 222, and balls 223.

The rolling groove 221 is disposed on the seat surface 14. The rolling groove 221 is arranged on a plane passing through the stem 15. Specifically, the rolling groove 221 is disposed so as to extend vertically at an intersection between a plane passing through the stem 15 and a spherical surface centered on the tilting center 25. The cross section of the rolling groove 221 is semicircular. Here, the cross section refers to a section perpendicular to the direction in which the rolling groove 221 extends. The rolling grooves 221 are equally distributed circumferentially around the stem 15.

The ball holding hole 222 is, for example, a hemispherical recess. The ball holding holes 222 are disposed on the spherical surface 24a of the spherical sleeve 24 so as to be equally distributed circumferentially on a plane perpendicular to the tilting shaft 43. The number of ball holding holes 222 is the same as the number of rolling grooves 221.

Balls 223 are disposed between the respective ball holding holes 222 and the rolling grooves 221. The balls 223 are held in the ball holding holes 222, and roll in the rolling grooves 221.

The rotation of the housing 1 is transmitted to the tilting lever 4 via the rolling groove 221, the ball 223, and the ball holding hole 222.

The rolling groove 221 may be disposed on the spherical surface 24a of the spherical sleeve 24, and the ball holding hole 222 may be disposed on the seat surface 14. In this case, the rolling grooves 221 are equally arranged on a plane passing through the tilting shaft 43 around the tilting shaft 43 in the spherical sleeve 24. The ball holding holes 222 are equally arranged on a plane perpendicular to the stem 15 around the stem 15 on the seat surface 14.

The present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the scope of the present invention, and all technical matters included in the technical ideas described in the claims are objects of the present invention. While the above embodiment has been described with reference to preferred examples, those skilled in the art can realize various alternatives, modifications, variations, and improvements from the disclosure in the present specification, and these are included in the technical scope described in the claims.

Claims

1. A deburring tool comprising:

A tilting lever including a second flange portion disposed opposite to the first flange portion, and a spherical sleeve supported by the seat surface and having a tilting center on the stem, the tilting lever being disposed along a tilting axis passing through the tilting center and being tiltable about the tilting center;

an elastic member that biases the return lever toward the tilting lever;

A rotation transmission mechanism for transmitting rotation of the housing to the tilting lever,

The rotary translational conversion mechanism includes: a rotation stopping mechanism that restricts rotation of the plunger relative to the bracket; a cam groove formed in a spiral shape on the plunger; and a cam pin disposed on the tilting lever so as to penetrate the tilting lever and the cam groove perpendicularly to the tilting shaft, and sliding in the cam groove.

2. The deburring tool as set forth in claim 1, wherein:

The rotation-translation mechanism brings the plunger into contact with the return lever at the tilting center when the holder is rotated by the rotation angle in a direction opposite to the rotation direction of the handle.

3. The deburring tool as set forth in claim 1, wherein:

the rotation stopping mechanism includes:

A long hole extending along an axial direction of the plunger so as to penetrate the plunger in a radial direction; and

And a rotation stop pin that penetrates the long hole and is disposed on the bracket so as to extend in the radial direction.

4. A deburring tool as claimed in any one of claims 1 to 3, wherein:

The rotation transmission mechanism includes:

A plurality of transmission levers disposed around the stem in parallel with the stem and fixed to the mechanism chamber;

and receiving portions disposed in the second flange portions and penetrated by the transmission rods, respectively.

5. The deburring tool of claim 4, wherein:

The transfer lever has a bulging portion arranged on a plane perpendicular to the stem and passing through the tilting center,

The receiving portion has an abutting surface abutting against the bulging portion.

6. The deburring tool of claim 4, wherein:

The restoring rod has a plurality of guide holes disposed in the first flange portion and penetrated by the transmission rod,

The restoring rod is guided in a manner to slide along the transfer rod within the guide hole.

7. The deburring tool of claim 5, wherein:

8. The deburring tool of claim 4, wherein:

The return lever moves in the stem direction so as to be guided by the transmission lever inserted in a guide hole formed in the first flange portion and the case.

9. The deburring tool of claim 5, wherein:

10. The deburring tool of claim 6, wherein:

the return lever moves in the stem direction so as to be guided by the transmission lever inserted in the guide hole formed in the first flange portion and the case.

11. The deburring tool of claim 7, wherein:

12. A deburring tool as claimed in any one of claims 1 to 3, wherein:

The rotation transmission mechanism includes:

a rolling groove which is disposed around the stem uniformly on a plane passing through the stem on either one of the seat surface and the spherical sleeve;

a ball holding hole which is disposed around the tilting shaft equally on the other of the seat surface and the spherical sleeve, and which is disposed on a plane passing through the tilting shaft; and

And a ball held between the rolling groove and the ball holding hole, and rolling between the rolling groove and the ball holding hole.

13. A deburring tool as claimed in any one of claims 1 to 3, wherein:

The rotation transmission mechanism includes:

A rolling groove which is equally disposed around the stem on a spherical surface centered on the tilting center and on a plane passing through the stem;

A ball holding hole disposed on a plane passing through the tilting center and perpendicular to the stem at an outer peripheral portion of the second flange portion; and

14. A deburring method, characterized in that:

The rotation transmission mechanism transmits the rotation of the housing to the tilting lever,

In the course of the processing of the steel sheet,

The tool that rotates integrally with the tilting lever cuts the workpiece.

15. The deburring method as set forth in claim 14, wherein:

further, the bracket is rotated by a predetermined rotation angle, and the plunger is brought into contact with the restoring rod at the tilting center.

16. The deburring method as set forth in claim 14, wherein:

further, an elastic member biases the return lever toward the tilting lever.

17. The deburring method as set forth in claim 15, wherein:

further, an elastic member biases the return lever toward the tilting lever.

18. The deburring method as set forth in any one of claims 14 to 17, characterized in that:

further, a transfer rod fixed to the housing guides the restoring rod, which moves.

19. The deburring method as set forth in any one of claims 14 to 17, characterized in that:

The transmission rod fixed to the housing is abutted against the receiving portion formed on the second flange portion of the tilting lever, and transmits the rotation of the housing to the tilting lever.

20. The deburring method as set forth in any one of claims 14 to 17, characterized in that:

The rotation of the housing is transmitted to the tilting lever by restricting the rotation of the rolling element rolling in the rolling groove in the rotation direction of the housing by a rolling groove disposed in one of the housing and the tilting lever and a holding portion disposed in the other.