JPH05261619A - Burring device - Google Patents

Abstract

PURPOSE:To remove any burr produced at the backside of a through-hole when this hole is made into a workpiece as well as to make a job for deburring for diverse through-holes achievable with one type burring tool. CONSTITUTION:A spindle 16 connecting to a drive motor 14 is formed on a retractable base 11 via a universal joint 15. A burring tool 18 is connected to a tip of this spindle 16. In addition, plural pieces of pressing means 23, pressing the spindle 16 in a direction crossing with an axis of the spindle 16 are installed on a circumference of the spindle 16 at regular intervals. In succession, a bendable elastic part 37 is formed in an interval between a pressing part of the spindle 16 by means of the pressing means 23 and burring work part 38.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a deburring device, which is a burr that occurs on the back surface side when a through hole is formed in a workpiece, especially on a non-planar (three-dimensional) peripheral edge. It is effective for removing burrs.

[0002]

2. Description of the Related Art Conventionally, when a through hole is opened in a workpiece, a burr is formed on the back surface side of the through hole. This Bali is
If the back side of the through hole is exposed to the outside, it is possible to easily remove it by exposing the back side of the through hole to a deburring tool such as a drill, a reamer, or a file. However, if the shape of the work piece is complicated and the back surface side of the through hole is not exposed to the outside and the polishing tool cannot be faced, it is difficult to perform deburring work using an ordinary file or the like.

Therefore, burrs formed on the back surface side of the through hole are manually removed from the front surface side using an electric tool. In this method, the deburring tool chucked on the tabletop drill is driven to rotate,
By inserting the through hole of the workpiece held by hand and tilting the workpiece slightly if necessary and making one revolution while cutting, the burr on the back side of the through hole is removed. However, since this method is performed by holding the work piece once by hand, it takes a lot of time and the work piece in contact with the deburring tool is likely to vibrate, resulting in poor deburring accuracy. Was there. Further, since the work piece is directly held by the hand, an injury or the like is likely to occur, which is dangerous.

Further, conventionally, as a method for removing burrs on the back side, there is a device described in Japanese Utility Model Laid-Open No. 60-146618. In this invention, a cutting tool bent into an arc shape or an L shape is inserted into a through hole of a workpiece, the tool is moved, and burrs generated on the back surface side of the through hole are removed. However, in this method, since it is necessary to insert a curved cutting tool into the through hole in advance, the cutting tool cannot be inserted into the small through hole, which makes deburring difficult. Further, in this invention, the cutting tool is moved by holding it by hand rather than rotating it electrically. Therefore, it is necessary to rotate the cutting tool at least once while strongly pressing it over the entire circumference of the through hole. However, it became difficult to perform the work for a long time, and the work precision was also uneven.

There is also a method of removing burrs on the back side by electrification. In this proposal, as a deburring tool as disclosed in Japanese Utility Model Laid-Open No. 63-10023, a bunch of thin wires or an eccentric projection is used. However, the deburring tool for a thin wire has a poor deburring accuracy and is likely to cause defective products. In addition, a deburring tool provided with an eccentric projection cannot be deburred unless the eccentric projection and the burr come into contact with each other unless they are accurately inserted into the through hole of the workpiece. Further, according to this invention, since a sleeve having a diameter matching the diameter of the through hole is used, a plurality of types of sleeves are required to deburr through holes having different hole diameters. In addition, since the wire and eccentric projections increase in diameter in the range of movement due to rotation, the tool cannot be inserted into or removed from the through hole unless the tool rotation is stopped each time the workpiece is machined. It was time-consuming and costly.

Further, when the peripheral edge of the opening in which burrs are generated is not circular and, for example, an opening is provided on the side surface of the tubular body, as shown in FIG. 8, the opening edge (34) on the inner surface of the workpiece (31) is , Forms a three-dimensional, non-planar, horse-horse-shaped rim. When burrs are formed on the periphery of the club-shaped mold, the periphery does not form a circular shape, so that automatic deburring cannot be performed, and manual deburring work is inefficient, which is troublesome.

[0007]

DISCLOSURE OF THE INVENTION The present invention is intended to solve the above-mentioned problems, and it is highly accurate in the deburring work that has occurred in the through hole of the workpiece by using an automated and safe device. Deburring is made possible, and this deburring is intended to be carried out inexpensively and efficiently.

[0008]

In order to solve the above-mentioned problems, the present invention forms a main shaft connected to a drive motor through a universal joint on a base that can be moved back and forth with respect to a workpiece. , A deburring tool is connected to the tip of this spindle to make it rotatable and to the outer circumference of this spindle.
A plurality of pressing means capable of pressing the main shaft in a direction intersecting the axis is provided at a constant interval in the circumferential direction, and by this pressing means, the deburring tool can be tilted with respect to the axis of the drive motor with the universal joint as a base point. By sequentially pressing the spindle with the circumferential pressing means, the deburring tool can be rotated about the shaft center of the drive motor in an inclined state, and the distance between the pressing portion of the spindle and the deburring work portion by the pressing means can be increased. In addition, a bendable elastic portion is formed.

The elastic portion may be formed on the main shaft.

The elastic portion may be formed on the deburring tool.

The deburring tool may be formed by a cutting tool.

The deburring tool may be formed by a grinding tool.

The deburring tool may be formed by a polishing tool.

[0014]

Since the present invention is constructed as described above,
In order to remove the burr generated on the back surface side of the through hole of the workpiece, first, the drive motor on the base is activated, and the spindle is rotationally driven via the universal joint. By the rotation of the spindle, the deburring tool connected to the tip of the spindle is driven to rotate. This deburring tool can be formed by a cutting tool, a grinding tool, or a polishing tool. Further, in the tip end direction of the deburring tool, a through hole of a workpiece fixed to a fixing means such as a chuck is positioned so as to face the through hole.

Next, the base is moved toward the workpiece and a deburring tool is inserted into the through hole of the workpiece. This insertion is performed until the actuators of all the pressing means are operated to press the main shaft in the central direction, and the tip of the deburring tool projects to the back surface side of the through hole. At this point, the spindle and deburring tool are rotating on the same axis as the drive motor. For this reason, when inserting the deburring tool, there is no need to stop the rotation of the main shaft, to poke the workpiece with the tool, to vibrate by contacting, etc., as in the conventional method, and it is possible to insert smoothly.

After inserting the deburring tool, the pressing means is operated to press the main shaft in the direction intersecting the axis. In this pressing method for the main shaft, a plurality of pressing means provided at a fixed interval in the circumferential direction on the tip side of the universal joint are sequentially operated in a fixed direction. Since the main shaft that receives the pressing force of the pressing means is connected to the drive motor through the bendable universal joint, the deburring tool is inclined with respect to the axis of the drive motor with the universal joint as the base point. ..

Then, the deburring tool is rotationally moved about the shaft center of the drive motor in an inclined state by the pressing force sequentially generated by a plurality of pressing means in a fixed direction.
Since the rotational movement of the deburring tool is performed in the through hole of the work piece, if the through hole of the work piece is circular, the deburring tool only penetrates the conical-shaped tip end side through hole. It is possible to remove the burrs that have come into contact with the back surface side of the and the back surface side of the through hole.

Further, since a bendable elastic portion is formed between the pressing portion of the main shaft by the pressing means and the deburring work portion, even if the operation timing of the pressing means is somewhat inaccurate. The elastic part flexibly supports accurate deburring work. In addition, even if an extremely large burr remains on the periphery of the through hole and the burr and the deburring tool come into contact with each other and a large repulsive force is applied to the deburring tool, the deburring is possible because the elastic portion can bend. The deburring tool can be protected without damaging the tool or wearing it abnormally.

Next, in order to pull out the deburring tool from the through hole of the workpiece for which deburring has been completed, first, the actuators of all the pressing means are operated to press the main shaft in the central direction. When the main shaft is pressed, the deburring tool, which has been rotating around the axis of the drive motor in an inclined state, rotates about the same axis as the axis of the drive motor. Then, if the base is moved in the direction away from the workpiece contrary to the above, the deburring tool can be pulled out from the through hole of the workpiece. When the deburring tool is pulled out, the rotation of the main shaft may be stopped, but if the main shaft is still rotated, the drive motor restarts and the waiting time such as stop time becomes unnecessary. , Deburring work has become faster,
Workability can be improved.

As described above, when removing the burr generated on the back surface side of the through hole of the workpiece, the deburring work is automated. Therefore, it is not necessary for the worker to remove the burr while holding the work piece by hand, and the manual work is not required. Therefore, highly accurate and safe deburring work can be performed.

Further, since the deburring tool rotates and moves about the axis of the drive motor in an inclined state, a deburring tool having a diameter smaller than the diameter of the through hole of the workpiece is used. As long as the workpiece has a through hole larger than the diameter of the removal tool, it is not necessary to change the deburring tool for each diameter of the through hole, and it can be used as it is, so inexpensive and efficient deburring work is possible. Become.

Further, since the deburring tool has a larger inclination angle as the diameter is smaller, the deburring effect can be enhanced. Of course, in this case, it is premised that the diameter is within a range where the strength of the deburring tool can be maintained.

When inserting the deburring tool into the through hole,
When pulling out, the deburring tool does not rotate around the axis of the drive motor in an inclined state but rotates with the same axis as the drive motor, so the deburring tool forcibly abuts or contacts the work piece. It is possible to prevent tool breakage, damage to the work piece, etc., and improve deburring accuracy without causing vibrations.

If the through hole of the work piece is not circular, the rotational movement shape of the deburring tool can be formed in an arbitrary shape by adjusting the pressing movement amounts and pressing times of the plurality of pressing means. The tip of the deburring tool can be rotated and moved along the peripheral edge of the through hole, and the burr at the opening edge having a complicated three-dimensional shape such as a horse's club shape can be surely removed.

Further, if the elastic portion is formed on the main shaft, the interval between the deburring work portion and the elastic portion becomes long, and for example, the deburring work portion and the deburring work portion which are largely projected on the peripheral edge of the through hole of the workpiece. Even if is touched, the load on the elastic portion is small, and the elastic portion is protected, so that it can be used for a long time. In this case, it is desirable that the rotation of the main shaft is low.

Further, if the elastic portion is formed on the deburring tool, the interval between the deburring working portion and the elastic portion is shortened, and the deburring working portion has improved followability to the peripheral edge of the through hole of the workpiece. In addition, deburring work can be performed more reliably. In this case, the rotation of the main shaft may be high speed.

[0027]

EXAMPLE A first example of the present invention will be described below.
1) is a base, which is installed on the track (13) so as to be movable back and forth by a moving means (12) such as an air cylinder as shown in FIG. This base (11) has a drive motor (14) such as a variable motor with a reducer formed on the upper surface.
Spindle to universal spindle (15) via (14)
By connecting (16), the main shaft (16) is rotationally driven in a bendable state from the universal joint (15).

The spindle (16) has a holder (1
7) is connected, and the deburring tool (1
Connect 8). Further, the spindle (16) has a spindle cylinder (2
0) is formed and is rotatable in the main barrel (20). Furthermore, on the outer circumference of the spindle cylinder (20), the outer circumference spacing (2
An annular outer peripheral frame (22) is formed through 1). The outer peripheral frame (22) is connected and fixed to the base (11) as shown in FIG. 2, and holds four pressing means (23) in the cross direction at regular intervals in the circumferential direction.

The pressing means (23) is attached to the casing (24) provided on the outer surface of the outer peripheral frame (22) as shown in FIG.
A pressing rod (25) capable of sliding in the (16) direction is formed, and the tip of this pressing rod (25) is attached to the sliding hole (26) of the outer peripheral frame (22).
And project to the outer peripheral space (21). This pressing rod (25)
Is always pushed through the spindle tube (20) by the restoring pressing force of the spring (27) provided in the casing (24).
6) is urged. Also, the pressing rods (25) at these four locations
Since the urging force of is uniform, it becomes possible to stabilize the main shaft (16) in the axial direction.

The pressing means (23) is a solenoid coil which forms a magnetic body (28) at the base end of the pressing rod (25) and induces the magnetic body (28) in the direction of the main shaft (16) by excitation.
(30) is formed on the outer circumference. When formed in this way, a highly accurate pressing operation of the pressing rod (25) becomes possible. Also the pressing rod
The operation of (25) energizes the solenoid coils (30) of two adjacent pressing means (23) in a constant rotation direction at the same time to control and balance the exciting currents of the two places, thereby deburring tool (18). ) Can be rotated in a substantially conical shape about the axis of the drive motor (14) in a tilted state.

A chuck (32) for holding the workpiece (31) is formed facing the deburring tool (18) fixed to the holder (17).

Further, the main shaft (16) is provided at a distance between the holder (17) and the pressing portion against the main shaft (16) by the pressing means (23).
A bendable elastic part (37) such as a flexible joint is formed, and the main shaft (16) can be bent via this elastic part (37).

A work piece having the above-mentioned structure
In order to remove the burr generated on the back surface side of the through hole (33) of (31), first the drive motor (14) on the base (11) is started and the main shaft (16) is passed through the universal joint (15). )
To rotate. And at the same time as this spindle (16) is driven to rotate, a deburring tool (18) connected to the tip of the spindle (16)
Is driven. A cutting tool, a grinding tool, or a polishing tool can be used as the deburring tool (18). Also, face the tip of this deburring tool (18) and chuck
The through hole (33) of the workpiece (31) fixed to (32) is located.

Next, an advancing / retreating means (12) such as an air cylinder.
Is operated to move the base (11) toward the workpiece (31), and the deburring tool (1) is inserted into the through hole (33) of the workpiece (31).
Insert 8). In this insertion, the solenoids (30) of all the pressing means (23) are excited, and the pressing rod (25) causes the main shaft (1
6) is pressed toward the center until the tip of the deburring tool (18) projects to the back surface side of the through hole (33). At this time, the main shaft (16) is urged by the pressing rods (25) of the four pressing means (23) in the axial direction with an equal force, so that the main shaft (16) and the deburring tool ( 18) rotates on the same axis as the drive motor (14). Therefore, when inserting the deburring tool (18), as in the conventional method,
The workpiece (31) can be smoothly inserted without being forcibly pierced by the deburring tool (18) or brought into contact with the workpiece and vibrating.

After inserting the deburring tool (18), the solenoid coil (30) of the pressing means (23) is excited to guide the magnetic body (28) of the pressing rod (25) toward the main shaft (16). Then, the main shaft (16) is pressed by the pressing rod (25) through the main shaft cylinder (20) in the direction intersecting the axis. The main shaft (1) of this pressing rod (25)
The pressing on 6) is performed as follows.

For example, when the through hole (33) is circular,
First, the solenoid coil (30) of the first pressing means (23) is excited to press the main shaft (16) in the pressing direction of the pressing rod (25). Next, the solenoid coil (30) of the second pressing means (23) adjacent to the first pressing means (23) is weakly excited,
The exciting current is gradually increased to press the main shaft (16) in the pressing direction of the second pressing rod (25). Simultaneously with this pressing, the exciting current to the first solenoid coil (30) is gradually decreased to decrease the exciting force, and the pressing by the first pressing rod (25) is gradually released. Adjacent pressing means like this
The solenoid coil (30) of (23) is sequentially operated in a constant rotation direction by controlling the exciting current, and the plurality of pressing rods (25) continuously press the spindle (16). Further, in this case, the main shaft (16) by the pressing rod (25) of each pressing means (23)
The pressing force and the amount of pushing out the same shall be the same.

Further, the main shaft (16) which receives the pressing force of the pressing rod (25) of the pressing means (23) is connected to the drive motor (14) through a bendable universal joint (15). Therefore, the deburring tool (18) is tilted with respect to the axis of the drive motor (14) with the universal joint (15) as a base point. Then, the deburring tool (18) is rotationally moved about the axis of the drive motor (14) in an inclined state by the pressing force that the pressing rod (25) sequentially generates in a fixed direction. This deburring tool (18) is moved and rotated in the through hole (33) of the workpiece (31), so
If the through hole (33) of (31) is circular, deburring tool
(18) is a through hole that extends only in the direction of the tip that spreads conically (33)
It is possible to remove the burrs formed on the back surface side of the through hole (33) by contacting the back surface side of the.

Further, when the through hole (33) of the work piece (31) is not circular or has a three-dimensional peripheral edge, the exciting currents of the plurality of solenoid coils (30) are strengthened or weakened, and the exciting currents are increased. Is controlled to control the pressing rod of the pressing means (23).
Deburring tool by adjusting the pressing movement amount and pressing time of (25)
The rotational shape of (18) can be arbitrarily formed, and the tip of the deburring tool (18) can be rotationally moved by following the three-dimensional peripheral edge of the through hole (33).

Further, since the pressing means (23) is formed by the combination of the solenoid coil (30), the magnetic body (28) and the spring (27), accurate control of the exciting current and the spring (27) are performed. The restoring force of allows a high degree of pressing operation. In addition, the deburring tool is constructed in this way, and the exciting current of the solenoid coil (30) is lowered, so that the through hole (33) is not circular in shape as described above.
If the rotation range of (18) is adjusted to the maximum size, the pressing rod (25) of the pressing means (23) is
The deburring tool (18) can be moved along the shape of the through hole (33) without being pushed back in the position direction before excitation and strongly cutting the small diameter portion.

The pressing rod (25) presses the main shaft (16) via the main cylinder (20). Further, since the main shaft (16) is rotatable with respect to the main shaft cylinder (20) via a ball bearing or the like, the main shaft cylinder (20) and the main shaft (16) are kept in contact with each other while the pressing rod (25) is being pressed. There is no turning, and the pressing rod
The pressing of (25) does not impose a load on the rotation of the main shaft (16).

Further, the deburring tool (18) includes a spindle (16)
By the bendable elastic part (37) provided on the
Even if the operation timing of (23) is somewhat inaccurate, the elastic portion (37) flexibly accommodates, and accurate deburring work is possible. Further, for example, an extremely large burr remains on the periphery of the through hole (33), and the burr and the deburring tool (18) may come into contact with each other, and a large repulsive force may be applied to the deburring tool (18). However, even in such a case, the elastic portion (37)
Since the main shaft (16) can be bent via the
It is possible to protect the deburring tool (18) without damaging (18) or abnormally wearing it.

Next, the work piece (31) which has been deburred
In order to pull out the deburring tool (18) from the through hole (33), first, all the solenoid coils (30) are excited, and the pressing rods (25) of all the pressing means (23) are used to rotate the spindle.
Press (16) toward the center. When the main shaft (16) is pressed, the deburring tool (18), which was rotating around the shaft center of the drive motor (14) in an inclined state, surely has the same shaft center as the drive motor (14). It becomes the rotation drive of. Therefore, the deburring tool (18) does not come into contact with the through hole (33) when it is pulled out from the through hole (33), and prevents the through hole (33) from being damaged. Is possible.

By operating the advancing / retreating means (12) in the opposite direction to the above to move the base (11) away from the workpiece (31), the deburring tool (18) is processed. Thing (3
It can be pulled out from the through hole (33) in 1). When pulling out the deburring tool (18), the spindle (1
The rotation of 6) may be stopped, but if the main shaft (16) is kept rotating, the drive motor (14) does not need to be restarted, waiting time such as stop time is required, and deburring work is performed. Can be speeded up and workability can be improved.

Also, in the first embodiment, the elastic portion (37) is used.
Was formed on the main shaft (16). As a result, the deburring work unit (3
The distance between 8) and the elastic part (37) becomes longer, and
Even if the burr largely projected on the peripheral edge of the through hole (33) of (31) and the deburring work part (38) come into contact with each other, the load on the elastic part (37) is small and the elastic part (37) is protected. It became possible to use it for a long time. However, in the second embodiment, the elastic portion
(37) is formed on the deburring tool (18) as shown in FIG. If formed in this way, the interval between the deburring work part (38) and the elastic part (37) becomes short, and the deburring work part (38)
Improves the followability of the workpiece (31) to the peripheral edge of the through hole (33), and enables more reliable deburring work. In this case, the main shaft (16) may rotate at high speed.

In each of the above embodiments, the pressing means (23)
Forms four pressing rods (25) and guides the magnetic body (28) formed at the base end of the pressing rods (25) in the main shaft (16) direction by exciting the solenoid coil (30) on the outer circumference. Made possible However, in the third embodiment, the pressing means (23) is
As shown in FIG. 6, six air cylinder parts (39) are provided without providing the magnetic body (28) and the solenoid coil (30).

The pressing means (23) is a hexagonal outer peripheral frame.
The air cylinder part (39) is fixed to (22), and the pressing rod (25) at the tip of the air cylinder part (39) is attached to the main cylinder (20).
It is positioned so that it can move forward and backward in the outer peripheral distance (21). And
In order to operate the pressing means (23), first, the first air cylinder part (39) is extended, and the main pressing shaft (20) is pressed by the pressing rod (25) at the tip end to press the main shaft (16). .. Then the first
The second air cylinder part (39) adjacent to the air cylinder part (39) of the main shaft is extended, and the main shaft is pushed by the pressing rod (25) at the tip.
Press (16). Further, the first air cylinder part (39) in the expanded state is contracted to stop the pressing of the main shaft (16) by the first pressing rod (25) and to adjoin the second air cylinder part (39). Third air cylinder part
Decompress (39). In this way, the plurality of air cylinder parts (39) are sequentially operated to rotate the deburring tool (18) in a substantially conical shape, and the deburring work generated in the through hole (33) of the workpiece (31) can be performed. It will be possible.

Further, each pressing means (23) fixes a crank type stay (40) in the outer peripheral direction of the outer peripheral frame (22) as shown in FIGS. 4 and 5, and at the tip of this stay (40). One side of the tension spring (42) is connected to the screwed adjustment bolt (41). Then, the tension spring (42) is extended and the other side is connected to a fixing bolt (43) fixed in the axial direction of the main barrel (20). In this way pulling spring
When (42) is connected, each tension spring (42) is connected to the main cylinder (20) when the air cylinder (39) is in the non-operating state.
Deburring tool (18)
Can be reliably positioned on the same axis as the drive motor (14). For this reason, the deburring tool (18) is
It does not come into contact with the through hole (33) at the time of insertion into or withdrawal from the (33) to cause damage to the through hole (33).

Further, in the above embodiment, the pressing means (23)
Connected an actuator such as a magnetic body (28) and an air cylinder part (39) to the pressing rod (25) to operate the pressing rod (25). However, in the fourth embodiment, the pressing means (2
3) enables the outer peripheral frame (22) supported by the steady rest guide (44) as shown in FIG. This outer frame
As shown in FIG. 7, the (22) has four pressing rods (25) each having a hemispherical end projectingly inserted into the sliding holes (26). By interposing the spring (27) on the pressing rod (25), the restoring force of the spring (27) causes the pressing rod (2) to be constantly operated.
In 5), the main shaft (16) is biased via the main cylinder (20). Further, since the urging forces of the four pressing rods (25) are equal, the main shaft (16) can be stabilized in the axial direction.

Further, the outer peripheral frame (22) has a pair of eccentric bearing portions (45) provided at both lower corners thereof so that the working shaft (46) can be advanced and retracted. Then, one end of this operating shaft (46) is eccentrically connected to the rotary plate (49) provided on the rotary shaft (48) of the motor (47), and the other end is supported by a shaft support (50) such as a pillow. It supports. By rotating the pair of motors (47) in synchronization, the plurality of operating shafts (46) are eccentrically rotatable.

Further, the shaft support (50) and the motor
(47) is placed on the placing table (51), and the placing table (51)
Is connected to an anteroposterior moving means (52) such as an air cylinder so that it can be moved in the anteroposterior direction. When formed in this manner, the eccentric bearing portion (45) penetrating the actuating shaft (46) can move the motor (4
7) is located on the rotary plate (49) side, the eccentricity is large with respect to the shaft support (50), and the main shaft (16) by the pressing means (23)
It is possible to adjust the pressing amount to

When the back-and-forth moving means (52) is extended, the eccentric bearing portion (45) is located on the side of the shaft support (50),
The amount of eccentricity with respect to (50) becomes small, and the amount of pressing on the main shaft (16) can be adjusted to a small amount. In this state, the spindle (1
If the motor (47) is stopped at a position where no pressure is applied to (6), the deburring tool (18) can be located on the same axis as the drive motor (14).

[0052]

EFFECTS OF THE INVENTION Since the present invention is configured as described above, when the deburring work that occurs in the through hole of the workpiece is automated, the deburring work is highly accurate and safe. Is possible.

Further, since the deburring tool is rotated in a conical shape about the shaft center of the drive motor in an inclined state, a deburring tool having a diameter smaller than the diameter of the through hole of the workpiece is used. If the workpiece has a through hole larger than the diameter of the deburring tool, the deburring tool does not need to be changed for each hole diameter of the through hole and can be used as it is. Work becomes possible. Further, since the deburring tool has a larger inclination angle as the diameter is smaller, the deburring effect can be enhanced. Of course, in this case, it is premised that the diameter is within a range where the strength of the deburring tool can be maintained.

When inserting the deburring tool into the through hole,
When pulling out, the deburring tool does not rotate around the axis of the drive motor in a tilted state and is driven to rotate with the same axis as the drive motor, so the deburring tool forcibly hits the workpiece. It is possible to prevent damage to the tool, damage to the work piece, etc., and to improve the deburring accuracy without contact or vibration.

When the workpiece has a through-hole peripheral edge or a three-dimensional peripheral edge, the rotational movement shape of the deburring tool is adjusted to an arbitrary shape by adjusting the pressing movement amounts and pressing times of the plurality of pressing means. If it is formed, the tip of the deburring tool can be rotated and moved along the peripheral edge of the through hole, and the burr at the opening edge of the horse's club shape can be surely removed.

Further, since a bendable elastic portion is formed between the pressing portion of the main shaft by the pressing means and the deburring work portion, even if the operation timing of the pressing means is somewhat inaccurate. The elastic part flexibly supports accurate deburring work. Also, even if an extremely large burr remains on the periphery of the through hole and the burr and the deburring tool come into contact with each other and a large repulsive force is applied to the deburring tool, the deburring tool is damaged because it can be bent from the elastic part. It is possible to protect the deburring tool without causing abrasion or abnormal wear.

[Brief description of drawings]

FIG. 1 is a side view of a first embodiment showing a partially cutaway state.

FIG. 2 is a front view of the first embodiment showing a partially cutaway state.

FIG. 3 is a side view of the second embodiment showing a partially cutaway state.

FIG. 4 is a front view showing a part of the third embodiment.

5 is an enlarged sectional view taken along line AA of FIG.

FIG. 6 is a perspective view showing a part of the fourth embodiment.

FIG. 7 is a front view showing a part of the fourth embodiment.

FIG. 8 is a perspective view showing a partially transparent state of an example of a workpiece.

[Explanation of symbols]

 11 Base 14 Drive Motor 15 Universal Joint 16 Spindle 18 Deburring Tool 23 Pressing Means 31 Workpiece 37 Elastic Part 38 Deburring Work Section

Claims (6)

[Claims] 1. A main shaft that is connected to a drive motor through a universal joint is formed on a base that can move back and forth with respect to a workpiece, and a deburring tool is connected to the tip of the main shaft to enable rotation. Along with the outer periphery of the main shaft, a plurality of pressing means capable of pressing the main shaft in the direction intersecting the axis are provided at regular intervals in the circumferential direction, and by this pressing means, the deburring tool is driven by the universal joint as a drive motor. Can be tilted with respect to the shaft center, and the depressing tool can be rotated around the shaft center of the drive motor in a tilted state by pressing the main shaft sequentially by the pressing means in the circumferential direction, and the pressing of the main shaft by the pressing means. A deburring device characterized in that a bendable elastic portion is formed in a space between the portion and the deburring operation portion. 2. The deburring device according to claim 1, wherein the elastic portion is formed on the main shaft. 3. The deburring device according to claim 1, wherein the elastic portion is formed on a deburring tool. 4. The deburring device according to claim 1, wherein the deburring tool is formed by a cutting tool. 5. The deburring device according to claim 1, wherein the deburring tool is formed by a grinding tool. 6. The deburring device according to claim 1, wherein the deburring tool is formed by a polishing tool.