JPH11333617A - Groove machining device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve assembly work efficiency and to reduce a cost by a method wherein this device forms simple constitution. SOLUTION: In a groove machining device 1 to machine a groove 2c in the hole 2b of a work 2, this machining device comprises a holding member 3 for a work 2; a crank member 4', a cutting part 5c arranged at one end part 5b thereof; a cutting member 5 to rotatably couple the other end part 5a to the crank pin 4a of the crank member 4; and an arm member 6 to oscillatorily support one end part 6a around a shaft part 11 and support the intermediate part 5d of the cutting member 5 such that a cutting member 5 is oscillatory centering around an intermediate part 5d.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a groove machining apparatus for machining a groove in a longitudinal direction in a hole of a sleeve member.

[0002]

2. Description of the Related Art A conventional grooving apparatus is disclosed in Japanese Patent Publication No. 57-57.
As disclosed in U.S. Pat. No. 204, in an apparatus for longitudinally machining an arcuate bottom groove in a sleeve member,
A rotatable workpiece carrier for gripping the sleeve member, a cutting tool mounted on a spindle that is offset from an axis of the sleeve member gripped in the workpiece carrier and perpendicular to the axis; A supporting device for supporting the spindle so as to reciprocate angularly so that the cutting tool can continuously perform a cutting and a return stroke alternately with respect to a sleeve member gripped by the workpiece carrier. Have
The support device has a spindle carrier on which the spindle is mounted, the spindle carrier being rotatable about an axis parallel to, but spaced from, the axis of the spindle. A drive shaft, a device for converting the rotational motion of the drive shaft into an angular reciprocating motion of the spindle, and a first rotatable synchronously with the drive shaft.
A cam device and during each return stroke of the cutting tool, a partial rotation of the spindle carrier causes a relative movement of the cutting tool mounted on the spindle away from the workpiece carrier. A first cam follower device and a first coupling device cooperating therewith; a second cam device; a device for driving the second cam device at a reduced speed by the drive shaft; Between the start of the cutting operation and the start of the next cutting step, a partial relative rotation of the spindle carrier causes a gradual relative movement of bringing the spindle closer to the workpiece carrier. It has a two-cam follower device and a second coupling device cooperating therewith, whereby the groove in the arcuate bottom surface is continuously machined into a sleeve in the workpiece carrier.

[0003]

However, this conventional grooving apparatus has a large number of parts and a complicated structure, which hinders an improvement in the efficiency of the assembling work, and further increases the cost. there were.

The present invention has a simple structure,
It is an object of the present invention to provide a groove machining apparatus capable of improving the assembling work efficiency and reducing the cost.

[0005]

In order to solve the above-mentioned problem, in a groove machining apparatus for machining a groove in a longitudinal direction in a hole of a sleeve member, the sleeve member is rotatable about an axis of the sleeve member. A crank member that rotates about an axis perpendicular to the axis of the sleeve member, and a cutting portion inserted into the hole of the sleeve member at one end thereof, and the other end of the crank member A cutting member rotatably connected to a crankpin of the member, one end of which is swingably supported about an axis parallel to the axis of the crank member and the other end of which is the one end of the cutting member; A groove processing apparatus includes an arm member that supports an intermediate portion between the portion and the other end portion so that the cutting member can swing around the intermediate portion.

In a groove machining apparatus for machining a groove in a longitudinal direction in a hole of a sleeve member, a holding member for rotatably holding the sleeve member about an axis of the sleeve member, and a shaft of the sleeve member. A crank member that rotates about an axis perpendicular to the shaft, a cutting member having a cutting portion inserted into the hole of the sleeve member at one end thereof, and a cutting member having the other end connected to a crankpin of the crank member. An axis parallel to the axis of the crank member, the intermediate portion between the one end and the other end of the cutting member being rotatably disposed about an axis parallel to the axis of the crank member. And a support member slidably supported in a direction perpendicular to the groove.

In the grooving device of the first aspect, the locus of the movement of the cutting portion of the cutting member has a substantially elliptical shape due to the rotation of the crank member and the swing of the arm member.

According to a second aspect of the present invention, the trajectory of the movement of the cutting portion of the cutting member has a substantially elliptical shape due to the rotation of the crank member, the rotation of the support member, and the sliding of the cutting member on the support member. Become.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to embodiments.

FIG. 1 is a side view of a groove machining apparatus 1 according to one embodiment of the present invention. As shown in FIG.
Are a holding member 3 for holding the work 2 as a sleeve member, a crank member 4, a cutting member 5, and an arm member 6.
And

The holding member 3 is rotatably disposed about a shaft 2 a of the work 2 extending in the vertical direction on the base portion 7, and is rotated by the first driving device 8. The base 7 can be moved by the first driving device 8 in a direction perpendicular to the axis 2a of the work 2 (the left-right direction in FIG. 1).

Above the holding member 3 (upward in FIG. 1), a second driving device 9 is arranged on the plate portion 10. The crank member 4 is driven by the second driving device 9 to rotate the shaft 2 a of the workpiece 2.
, And rotated about an axis perpendicular to the direction of movement of the base 7.

The first driving device 8 and the second driving device 9 in the present embodiment are formed by using various known driving devices, and thus detailed description thereof will be omitted.

The upper end 5a of the cutting member 5 is
The cutting member 5 is rotatably connected to the crank pin 4a, and a cutting portion 5c is formed at the lower end 5b of the cutting member 5.

One end 6a of the arm member 6 is connected to a shaft portion 11 provided on the plate portion 10 so as to be parallel to the rotation axis of the crank member 4 so that the arm member 6 can swing. I have. The other end 6 b of the arm member 6 is connected to an intermediate portion 5 d between the upper end 5 a and the lower end 5 b of the cutting member 5 by a shaft 12 parallel to the shaft 11. Therefore,
The cutting member 5 is supported by the other end 6b of the arm member 6 so as to be swingable about the intermediate portion 5d.

Next, the operation will be described. By attaching the work 2 to the holding member 3, the cutting portion 5c of the cutting member 5 is inserted into the hole 2b of the work 2.

FIG. 2 is a diagram showing a locus of movement of the cutting edge of the cutting portion 5c of the cutting member 5 in FIG.

As shown in FIGS. 1 and 2, the crank member 4
When the crank pin 4a is positioned at the uppermost part, the cutting edge of the cutting portion 5c of the cutting member 5 is at the position A in FIG.

When the crank member 4 is rotated 45 degrees clockwise in FIG. 1 by the second driving device 9 from the state where the crank pin 4a is at the uppermost position, the cutting portion 5c of the cutting member 5 is cut. Is moved to the position B in FIG. 2 by the rotational movement of the crank member 4 and the swing movement by the arm member 6.

When the crank member 4 is further rotated clockwise by 45 degrees, the cutting edge of the cutting portion 5c moves from the position B in FIG. 2 to the position C in FIG.
By being rotated by degrees, it moves from the position C in FIG. 2 to the position D, and eventually from D to the position A.

That is, as the crank member 4 makes one rotation, the cutting edge of the cutting portion 5c of the cutting member 5 moves in order to A, B, C and D, and the locus of the cutting edge of the cutting portion 5c is shown in FIG. As will be apparent from the above, a substantially elliptical shape is exhibited.

Therefore, by repeating the elliptical movement of the cutting portion 5c, a groove 2c is formed on the inner peripheral surface of the work 2 which extends in the axial direction and has a bottom-shaped arc. .

During the movement of the cutting portion 5c in a substantially elliptical shape, the base portion 7 is gradually moved rightward (rightward in FIG. 1) by the first driving device 8, so that the groove 2c is formed deeply. Will be.

When one groove 2c is formed in the work 2,
The base 7 is moved to the left by the first driving device 8 so that the cutting edge of the cutting portion 5c and the workpiece 2 are not in contact with each other, and then the holding member 3 is rotated by the first driving device 8. When the base 7 is moved rightward after the holding member 3 rotates by a predetermined angle, the cutting edge of the cutting portion 5c abuts on the inner peripheral surface of the work 2 to form a new groove 2c. By repeating this process, the work 2 has a plurality of grooves 2c.
Is formed.

As described above, according to the groove machining apparatus 1 of the present embodiment, it is possible to form the groove 2c on the inner peripheral surface of the work 2 with a simple configuration.

Therefore, by adopting a simple configuration, it is possible to provide the groove machining apparatus 1 which can improve the efficiency of the assembling work and reduce the cost.

(Embodiment 2) FIG. 3 is a side view of a groove machining apparatus 1 according to an embodiment of the present invention. The same members as those in the first embodiment are denoted by the same reference numerals. Except for the configuration of the support member 13, it is substantially the same as the grooving device 1 of the first embodiment, and thus a detailed description is omitted.

As shown in FIG. 3, the plate portion 10 is provided with a support member 13 rotatable about an axis parallel to the rotation axis of the crank member 4. The support member 13 has a slit 13a extending in a direction perpendicular to the rotation axis.

An intermediate portion 5d of the cutting member 5 is slidably mounted in the slit 13a of the support member 13 in the slit 13a.

Next, the operation will be described. By attaching the work 2 to the holding member 3, the hole 2b of the work 2 is formed.
The cutting portion 5c of the cutting member 5 is inserted therein.

FIG. 4 is a diagram showing the locus of the movement of the cutting edge of the cutting portion 5c of the cutting member 5 in FIG.

As shown in FIG. 3 and FIG.
When the crank pin 4a is positioned at the uppermost position, the cutting edge of the cutting portion 5c of the cutting member 5 is at the position A in FIG.

When the crank member 4 is rotated by the second driving device 9 in the direction of the arrow in FIG. 3, that is, 45 degrees clockwise from the state where the crank pin 4a is at the uppermost portion, the cutting portion 5c of the cutting member 5 is cut. Is the rotational motion of the crank member 4,
Due to the rotation of the support member 13 and the sliding movement of the intermediate portion 5d of the cutting member 5 in the support member 13, the support member 13 moves to the position B in FIG.

When the crank member 4 is further rotated clockwise by 45 degrees, the cutting edge of the cutting portion 5c moves from the position B in FIG. 4 to the position C in FIG.
By being rotated by degrees, it moves from the position C in FIG. 4 to the position D, and eventually from D to A.

That is, as the crank member 4 makes one rotation, the cutting edge of the cutting portion 5c of the cutting member 5 moves in the order of A, B, C and D, and the locus of the cutting edge of the cutting portion 5c is shown in FIG. As will be apparent from the above, a substantially elliptical shape is exhibited.

Therefore, by repeating the elliptical movement of the cutting portion 5c, a groove 2c is formed on the inner peripheral surface of the work 2 which extends in the axial direction and whose bottom surface has an arcuate shape. .

During the movement of the cutting portion 5c in a substantially elliptical shape, the base 2 is gradually moved rightward (rightward in FIG. 3) by the first driving device 8, so that the groove 2c is formed deeply. Will be.

When one groove 2c is formed in the work 2,
The base 7 is moved to the left by the first driving device 8 so that the cutting edge of the cutting portion 5c and the workpiece 2 are not in contact with each other, and then the holding member 3 is rotated by the first driving device 8. When the base 7 is moved rightward after the holding member 3 rotates by a predetermined angle, the cutting edge of the cutting portion 5c abuts on the inner peripheral surface of the work 2 to form a new groove 2c. By repeating this process, the work 2 has a plurality of grooves 2c.
Is formed.

The other functions and effects are the same as those of the first embodiment, and the description is omitted.

Although the present invention has been described based on the above embodiments, the present invention is not limited to the above embodiments but includes various embodiments according to the principle of the present invention.

[0041]

As described above, according to the first and second aspects of the present invention, it is possible to form a groove in a sleeve member with a simple configuration.

Therefore, by adopting a simple configuration, it is possible to provide a groove machining apparatus capable of improving the assembling work efficiency and reducing the cost.

[Brief description of the drawings]

FIG. 1 is a side view of a grooving apparatus 1 according to a first embodiment.

FIG. 2 is a diagram showing a locus of movement of a cutting unit 5c of the grooving device 1 of FIG.

FIG. 3 is a side view of the grooving device 1 according to the second embodiment.

FIG. 4 is a diagram showing a locus of movement of a cutting section 5c of the groove machining apparatus 1 of FIG. 3;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Groove processing apparatus 2 Work 2a Shaft 2b Hole 2c Groove 3 Holding member 4 Crank member 4a Crank pin 5 Cutting member 5a Upper end portion 5b Lower end portion 5c Cutting portion 5d Intermediate portion 6 Arm member 6a One end portion 6b Other end portion 11 Shaft portion 12 Shaft 13 support member

Claims (2)

[Claims] 1. A groove processing apparatus for forming a groove in a hole of a sleeve member in a longitudinal direction, the holding member rotatably holding the sleeve member around an axis of the sleeve member, and a shaft of the sleeve member. A crank member that rotates around an axis perpendicular to the shaft, a cutting portion inserted into the hole of the sleeve member at one end thereof, and the other end portion is rotatably connected to a crank pin of the crank member. A cutting member, one end of which is swingably supported about an axis parallel to the axis of the crank member and an intermediate portion between the one end and the other end of the cutting member at the other end And an arm member for supporting the cutting member so that the cutting member can swing around the intermediate portion. 2. A groove processing apparatus for forming a groove in a hole of a sleeve member in a longitudinal direction, a holding member rotatably holding the sleeve member about an axis of the sleeve member, and a shaft of the sleeve member. A crank member that rotates about an axis perpendicular to the shaft, a cutting member having a cutting portion inserted into the hole of the sleeve member at one end thereof, and a cutting member having the other end connected to a crank pin of the crank member. An axis parallel to the axis of the crank member, wherein the intermediate portion between the one end and the other end of the cutting member is arranged rotatably about an axis parallel to the axis of the crank member. And a support member slidably supporting in a direction perpendicular to the groove.