JPS6263010A - Automatic cutter changing type shaving machine - Google Patents

Abstract

PURPOSE:To aim at reduction in cutter changing time, by installing a movable chucking device, a cutter changing arm, a truck, etc., as a cutter changing device, and operating them all. CONSTITUTION:A cutter 11 rotates solidly with a spindle 2 via a key 13, while it is prevented from slipping off a cutter setting part 3 by a clamper 8. When this cutter 11 is changed with a new one, a movable chucking device, a cutter changing arm, a truck and so on are operated, holding it with a chucked part 18, and the clamper 8 is made to go forward by a retractable driving device 7, the clamping of the cutter 11 is released free, and it is removed with travel of the truck. And, the next cutter 11 is fitted in top of the cutter setting part 3, and the clamper 8 is retracted by the retractable driving device 7, thereby clamping the cutter 11. With this constitution, the time required for a preparatory change of the cutter 11 is largely reducible.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a shaving machine used for gear finishing, and provides an automatic cutter exchange type shaving machine in which a shaving cutter can be automatically exchanged.

Conventional TechnologyAlthough most machine tools are now equipped with an automatic tool change mechanism, there are still no automatic tool change types available for shaving machines. do not have. The reason for this is that the cutter for 7-eving is thin and has a small width relative to its diameter, so it is almost impossible to fit the cutter head onto the main shaft of the cutter head, and it is difficult to fit it onto the main shaft. The whole process of centering the tth point by fitting it onto the main shaft without having to fit it into the main shaft: It is difficult to do this, and from the time when the shaving machine was developed to the present day, the method of making and re-sharpening the cutter is very difficult. This is thought to be due to the fact that the cutter is treated as a thin-walled cutter and is fixed in place.

The only known technique for rapid replacement of a shaving cutter is disclosed in Japanese Patent Publication No. 58-33053. This known technology applies to the cutter head,
By providing a sliding part that can slide along the main shaft and supporting the main shaft, and by equipping the main shaft with multiple cutters, the sliding of the sliding part can be improved. The machine can be selectively moved to the processing position for each individual machine.

2 Problems to be solved by the invention In addition to the above-mentioned known technology in which the main shaft is moved together with the sliding part of the cutter head to replace the cutter, there is a problem in that the relatively long purchasing section is moved. Therefore, there is a limit to the number of cutters that can be replaced during the movement, and the number of cutters that can be replaced is limited to two or at most three. And it takes quite a long time to carefully reinstall two or three cutters on the main shaft.

Therefore, the present invention provides a structure suitable for automatic exchange to the cutter itself, and also provides a mechanism for fitting the cutter to the main shaft without twisting the cutter, thereby making it possible to automatically exchange the cutter, thereby creating a completely new shaving machine. This is what we are trying to provide.

To facilitate understanding, the following technical means of the present invention will be explained with reference to the accompanying drawings to facilitate understanding.

In the shaving machine according to the present invention, as illustrated in FIG. 1, a cutter mounting portion 3 is provided at one end of the main shaft 2 mounted on the cutter head 1 (FIGS. 8-9). In other words, the cutter mounting portion 3 is formed at one end of the main shaft by being biased toward the inner side of the support portion 1at of the cutter head 1 that supports the main shaft 2 via the bearing 4 on the same end side. A cutter positioning step 5 is provided on the main shaft 2 at the inner end of the cutter device section 30.
The through hole 6 is formed on the axis of the main shaft 2.

The through hole 6 of the main shaft 20 supports a clamp bar 8 which is mounted on the main shaft 2 on the opposite side of the force-tutter mounting portion 3 and is driven forward and backward by a movement means 7. This clamp bar 8
is equipped with a clamp member 10 which has an axis completely aligned with the main shaft 2 and is open at one end to form a pin support hole 9 at the end on the side of the cutter mounting part 3, and which has a plurality of balls in the illustrated example. let

A plurality of cutters 11 are selectively mounted on the main shaft 2 on its cutter mounting portion 3, and each cutter 11 has the following structure.

That is, each cutter 11 has a fitting hole 12 with one end closed, which is formed so that the cutter axis and the axis coincide with each other, and which is fitted onto the cutter mounting part 3 and which is closed at one end.
n72: A fitting hole 12 having a keyway 14 into which the key 13 is fitted, and a positioning end jfi15 that abuts against the cutter positioning step 5 on the main shaft 2 are provided. In particular, the specific volume cutter 11 has a cutter line aligned with its axis, and is protruded beyond the positioning end surface 15 from within the above-mentioned box-fitting hole 12, and is fitted into the bin support hole 9 of the clamp bar 8. The bin 16 is fitted with a clamped portion 17 that is clamped by the X clamp member 10 when the clamp bar 8 moves backward, and the positioning end surface 15 is formed at the opposite end. lrL ratio gripped part 1
Next, as schematically shown in FIG. 8, this invention provides a frame that is supported so as to be movable in a direction (in the direction of the arrow) toward and away from the cutter mounting portion 3. A running cart 20 is provided. f@4. The truck 20 illustrated in FIG.
'L7t A cutter exchange arm 22f is provided, which is a cutter exchange arm 22, and is rotated to an area facing the cutter mounting portion 3 with one end surface and the other end surface of the cutter exchange arm 22. On each of the above-mentioned end surfaces of the cutter exchange arm 22, there is a cutter phase determining device 23, which is configured as a key in the illustrated example, and a position where each end surface faces the cutter mounting portion 3. At this time, a metal plate 24 and a metal plate are provided which are arranged concentrically with respect to the main shaft 2.

Similarly to the trolley 20, the mechanism illustrated in Fig. 4.5,
Cutter exchange arm 22i$4 A rotation drive means 25 for rotating the machine around the fulcrum #i21 as indicated by arrow B in the figure, a pair of movable chuck means 26 supported by the cutter exchange arm 22, and a cutter exchange arm 22 and a pair of chuck drive means 27 for selectively gripping the pair of movable chuck means 26. Each of the above-mentioned chuck means 26 brings the valley cutter 11 into contact with the gripped portion of the cutter 11 in a state in which the six butts 24t'' are brought into contact with each cutter 11 at its center position, and each cutter 11 is positioned by the cutter phasing device 23. The cutter 11 is configured such that it can be gripped with the cutter 18.
In the construction illustrated in FIG. 1.2, a cutout groove 28 into which the above-mentioned positioning tool 23 fits is formed in the end surface on the gripped part 18 side.

Operation The shaving machine according to the present invention has a cutter 11t-,
Insert the bottle 1 of the cutter 11 into the bottle support hole 9 of the clamp bar 8.
6 is supported, and the key 13 on the main shaft 2 is fitted into the key groove 14 of the cutter 11, and then F-fitted into the fitting hole 12, the clamp bar 8 is moved backward, and the F-covered member is fitted into the clamp member 10. Bin 1 of cutter 11 at clamp part 11
6 is clamped and used for processing. Therefore, the cutter 11 is rotated together with the main body 111b2 via the key 13, and is prevented from coming off from the cutter mounting portion 3 by the clamp bar 8.

When replacing the cutter 11, the cutter 11 shown in FIG. The cutter exchange arm 22, which is in a state where it is gripping the canter 11 to be removed, is moved forward in the direction of the rainbow cutter attachment part 3 while the cart 200 is traveling, and the chuck means 26 is brought to a position where it can grip the cutter 11 on the main shaft 2. 0 At this time, the phase determining tool 23 on the cutter exchange arm 22 is aligned with the notch groove 28 of the cutter 11 on the main shaft 2.
It fits into the At this point, the chuck driving means 27 is operated to grip the chuck means 26t, and the cutter 11 on the main shaft 2 is gripped by its gripped portion 18.
2-cycle blade par 8 is advanced and the cutter 11 is clamped t-S<.

When the cart 20 moves in the opposite direction and the cutter exchange arm 22 is moved back to the workpiece 5 where it can be moved away from the cutter mounting portion 3, the cutter 11 on the main shaft 2 is removed while being gripped by the chuck means 26. Remove it. Then, the cart 20 or the cutter exchange arm 22 is placed in the retracted position, and the rotation driving means 2
When the cutter exchange arm 22 is rotated 180 degrees around the seven fulcrum shafts 21, the new cutter 11 held by the other chuck means 22 is moved to a position facing the cutter mounting portion 3. Sanru. Next, the carriage 20i is moved forward again, and the cutter exchange arm 22 moves forward to insert a new cutter 11 into the fitting hole 1 as illustrated in FIG.
First, bring it to just before the position where the second end enters the third end of the cutter mounting part. Near this position, the pin 16 of the cutter 11 has already entered the pin support hole 15 of the clamp bar 8 slightly. From the position just before the position illustrated in FIG.
1 The cutter 11 is mounted on the exchange arm 22 and is gripped by the chuck means 26, and is pushed between the gripped portion 18 and the center portion where the stopper 24 contacts, but the fitting hole 12 is inserted into the cutter mounting portion 3. The gripping operation of the rainbow chuck means 26 is released by the actuating chuck drive means 27 from the position where the cutter exchange arm 22 has slightly entered the car, and the cutter exchange arm 22 is engaged with the cutter 11 only by its stopper 24. This 1 sea urchin cutter 11
t- When pushing slowly at the center to release the grip, press the pin support hole 9 of the clamp bar 8 with the guide of the pin 16 and the guide of the inner circumferential surface of the fitting hole 12 by the cutter attachment part 3. While the attitude of the cutter 11 is being corrected so that it is placed precisely concentrically with the spindle 2, the cutter 11 is
@3 It is fitted upwards. During this two-way fitting process, the cutter phasing tool 23 on the cutter exchange arm 22 receives 1V.
The key groove 14 of the phased cutter 11 is fitted into the key 13 on the main shaft 2.

When a new cutter 11 is fitted onto the cutter mounting portion 3, the rainbow clamp bar 8 is moved backward to the forward/backward driving means 7 to clamp the cutter 11. At this time, the positioning end face 15 of the cutter 11 precisely abuts against the positioning step 5 on the main shaft 2, and the main shaft 2 of the cutter 11
- Positioning in the linear direction is also achieved. Here, trolley 2 (l
If the cutter 11 is moved backward, the replacement of the cutter 11 is completed. The cutter 11 to be used next is held by the chuck means 26 on the opposite side of the cutter mounting portion 3 on the cutter exchange arm 22 on the retracted cart 20 during the machining process.

Embodiment The structure of the shaving machine in the illustrated embodiment is as follows.
It is schematically shown in Figure 10 and is the same as the conventional one.

That is, on the upper surface of the cheagle 31 installed on the bed 30, there are two tailstocks 32 and 33 on the left and right sides that support the gear to be machined.
The cutter head 1 is mounted on a bed 30 and supported by a column 34 so as to be movable up and down.
ing. An elevating drive motor 35 is provided to move the counter head 1t up and down, and a cutter drive motor 36 is provided to rotate the main shaft 2.

In the mechanism shown in FIG. 1, the support portion 1a and the other support portion 1b of the main shaft 2r1 and the cutter head 1 are supported through the bearing 4 and another bearing 37i.

The forward/backward drive means 7 is constituted by a hydraulic cylinder that rotates integrally with the main shaft 2, and the cutter head 1 includes:
A rotary joint 3 attached to the main shaft 2 and feeding oil to the drive means 7
As shown in FIG. 1.2, the through hole 6 of the main shaft 2 has a large diameter hole 6a on the side of the cutter mounting section 3, and the clamp bar 8 is The bottle support hole 9 is provided on the tip side of a large diameter portion 8ai that fits into the large diameter hole 6a, and the bottle support hole 9 is formed in the large diameter portion 8a. The opening end side portion of this bottle support hole 9 is a large diameter hole 9 in the range where the bottle 16 is inserted to the vicinity of the position shown in FIG.
The end of the large diameter hole 9a and the tip of the bottle 16 are chamfered at z5 as shown in the figure. Similarly, the end of the cutter mounting portion 3 and the end of the fitting hole 12 are chamfered.

A hole 6bl with a larger inner diameter is provided on the tip side of the large-diameter hole 6a of the through-hole 6 of the main shaft 2, and the clamp member 10 of the rim 2 pumper 8 is placed in the forward position of the clamp bar 8. 2 Hole part 6bi) IIK located in the gill shown to the south 1
The clamp bar 8 is provided with a plurality of balls supported in radial holes of the clamp bar 8. The clamped portion 17 of the bin 16 on the cutter 11 is
When the clamp bar 8 is retracted as shown in FIG. It is moved from the hole 6b into the large-diameter hole 6a with a small diameter, and is pushed into the inner circumferential surface of the hole 6a inward in the radial direction and press-fitted into the clamped portion 17. There is.

The cutter 110 shown in FIG. 1.2 said positioning end face 1
5 is formed by slightly protruding the cutter boss portion in the axial direction.

The proximal end is screwed onto the cutter 11 body. The gripped portion 18 of the cutter 11 has a V-pulley-shaped annular groove.

FIG. 3 shows a cutter 111t which is a modification of the existing cutter 11At'', and a ring 11at providing a positioning end WJ1st is attached to one end surface of the existing cutter 11A, and another ring 11 is attached to the other end surface. The above-mentioned members 11a-11b+llc are provided as attachments for the existing cutter 11A.

Among the rings 11a and 11b and the hardware 11c, the rings 11a and 11b and the hardware 11c are attached to the existing cutter 11A using a fastener such as a countersunk screw.
Can be installed against. This cutter 11 is shown in FIG. 3 with the upper half in the same state as in FIG. 1, and the lower half in the same state as in FIG. 2. It can be used in the same way as the cutter 11.

As shown in FIG. 9, a supporting frame 40 is attached to the column 34 and extends in the front direction, and a rectangular pipe 41 overflowing laterally is fixed to the tip of the supporting frame 40 with a melt layer. The rectangular pipe 41 is fitted with rails 42, 43 on the front side and the bottom side, as clearly shown in Fig. 5.6.
These rails 42, 43 are provided with rail grooves 44, 45 that fit into them, allowing them to run along the rails 42, 43. In the illustrated case, the travel drive means 19 is constructed by a hydraulic motor installed on the truck 20 itself. In other words, similarly, the rail 4 is attached to the workpiece 9 shown in Fig. 5.6.
2. Fix the cleaning rack 46 to the rectangular pipe 41 in the same direction as in 43, attach it to the front side of the truck 20, and then engage the rack 46 on the motor shaft 19a of the travel drive means 19, which is a hydraulic motor. Binion 47″lI: Provide pinion 4
7 rotates while meshing with the rack 46, thereby allowing the trolley 20 to travel. Note that the traveling drive means 19
The support frame 40 may be fixed to the support frame 40, and nine hydraulic cylinders or the like may be installed, and the carriage 20 may be moved via a feed screw mechanism or the like.

In the construction shown in FIG. 5, the fulcrum shaft 21 is rotatably supported by the carriage 20 via a pair of bearings 48 and 49 which are fixed to the cutter exchange arm 22. The rotation means 25 is constituted by a hydraulic cylinder, and is attached to the piston rond 25a as shown in FIG.
The cutter exchange arm 22t is to be rotated together with the fulcrum shaft 21 in order to align the t-1m. A pair of fingers 26ai are rotatably supported on the cutter exchange arm 22 about a fulcrum shaft 52t.
It is said to be prepared. Both fingers 26a have an arc-shaped inner surface, and the free end faces downward on the side facing the xB cutter storage section 3 when the cutter exchange arm 220 rotates.
On the other side, take a position with the free end facing upward.

The chuck driving means 27 for selectively gripping each chuck means 26 are as shown in FIG. 4.5.
The piston 153'i is equipped with a double-acting hydraulic cylinder. ri@5 on the cutter exchange arm 22 on one side and the other side of the piston 153 (front and rear of the machine as a whole).
4 is rotatably supported on each shaft 54, and a T-engaging element 55 is inserted into a hole formed around the piston 530 with its protrusion and engaged with the piston 153. 1 for each rotation of the engager 55 due to the movement of the shaft 5
4 is rotated. An arcuate pin bearing hole 54bt is formed in the pin diameter portion 54a of the six fans 54, and each finger 26 is inserted into this pin bearing hole 54b.
51 to support the eccentric drive pin 56, so that each finger 26 is supported when the shaft 54 rotates in one direction and the other direction based on the amount of eccentricity C between the shaft 54 and the eccentric drive pin 56.
A is designed to be able to rotate in one direction and the other direction.

A cutter exchange arm 22 that rotates together with the fulcrum shaft 21
A rotary joint portion R [,
As shown in FIG. 5, the outer peripheral end of the annular groove formed on the peripheral surface of the fulcrum shaft 21 is formed by sealing the inner peripheral surface of the hole in the housing part that supports the fulcrum shaft 21 in the upper truck 20. There is. Since there are two hydraulic cylinders and each hydraulic cylinder has two hydraulic chambers, the above a-tally joint R is not provided on the 4 sides, and each rotary joint R
The oil passage in the fulcrum shaft 21 and the oil passage in the cutter exchange arm 22 are communicated with each of the above-mentioned hydraulic chambers. Each hydraulic cylinder is equipped with an internal spring 57 that biases the piston 53 in the direction of gripping the chuck means 26t in preparation for an unexpected stoppage of the hydraulic valve due to a power outage or the like.

The mechanism for detecting the position of the trolley 20 is not provided with a +7 mitt switch mechanism 58 shown in FIG. 4.5. A hydraulic circuit switching valve 59 is attached to the sea urchin column 34 shown in Figure 8-10, and this switching valve 9P59 and the trolley 2
A hydraulic hose 60 is provided between the two. As shown in FIG. 1, the main shaft 20 is fixed to the main shaft 2 and is provided with a phase detection means consisting of a magnetic body 61 and a magnetic sensor 62 disposed opposite to the main shaft 2. The orientation in which the rotation is stopped in a state where the rotation is at a constant phase is performed by detection by the phase detection means.

FIG. 11 shows a cutter 11 attached to the illustrated shaving machine.
2 is a sequence chart illustrating how the shaving machine is replaced in relation to steps on the main side of the shaving machine. In the figure, among the pair of chuck means 26, the cutter storage section 3 is
The chuck means used when facing the user is designated by the code 26A.
The chuck means on the opposite side is designated by the symbol 26B.
It is displayed. Also, each chuck means 26A, 2
Holding the cutter 6B is referred to as "chuck", releasing the grip is referred to as "unchuck", clamping the cutter 11 by retracting the clamp bar 8 is referred to as "clamp", and releasing the clamp by moving forward is referred to as "unclamp".

The manner in which the cutter 11 is replaced is as described above as a function of the invention.The chuck means 26B is already gripping the next cutter 11 while the machine is in operation.As shown in the bottom column of FIG. Immediately after the operation of this machine is finished, the cart 20 moves forward from the backward end to the forward end. The last short time TI is performed slowly in order to alleviate the problem. Immediately after the carriage 20 reaches the forward end, the chuck means 26A starts the gripping operation.
grip the cutter 11 on the cutter mounting part 3, and
When the set time T of the timer, which is started upon arrival at the forward end of the blade 0, has elapsed, the clan book 8 is moved forward and the clamp of the cutter 11 on the cutter mounting portion 3 is released.
Ru. The F truck 20 is moved backward when the set time T of the timer that is started at the start of forward movement at Clamp No. (-8) has elapsed.

Immediately when the cart 20 reaches the rearward end, the canter exchange arm 22 is rotated to the right, and the chuck means 26B for gripping the next cutter 11 is also moved to a position facing the cutter mounting portion 3. Immediately after this rotation of the cutter exchange arm 22, the cart 20 moves forward.
The cutter 11 is brought to the vicinity of the position shown in the figure, and the forward speed of the platform 20 is reduced.
The timer is set from the moment the contact comes into contact with the timer T, ? 2) - Then, the grip of the chuck means 26 is released, and after that, the cutter 11 is pushed onto the cutter 11 by the pad 24 and fitted onto the cutter mounting portion 3.

Immediately after the carriage 20 reaches the forward end, the clamp bar 8 moves backward and the cutter 11 is clamped. The truck 20 moves backward. In this machine, cleaning such as washing away the cutting powder deposited on the main shaft 2 with sprayed cleaning oil is carried out between the time when the truck 20 starts retreating and the time when it moves forward again to the front end.

When the cart 20 retreats to the rear end, the cutter 11
For example, an automatic gauge mechanism is used to check whether the NFC is installed in the required machine or not. Upon completion of this check, the machine starts operating. The operation of this machine utilizes the phase detection means consisting of the above-mentioned magnetizing body 61 and magnetic sensor/sensor 62, and includes the above-mentioned orientation. The specific gravity tool exchange, which consists of removing the used cutter 11 from the tool exchange arm 22 (D-chip) picking means 26A and causing the chuck means 26B to grip the cutter 11 to be used next, is performed while the machine is in operation. I will do it.

Effects of the Invention The present invention uses the cutter mounting portion 3 of the main shaft 2 as the shaft end, and the cutter 11 is arranged so that the cutter 11 can be mounted while automatically positioning with respect to the cutter mounting portion.
The fitting hole 12 of the cutter 1 is closed at one end, and the cutter 1 is
1 is provided with a gripped portion 18 , and a pin 16 is provided on the cutter 11 to be fitted and supported in the pin support hole 9 of the clamp bar 8 disposed on the main shaft 2 . and a structure in which the bottle 16 on the axis is fitted into the cutter mounting part 3 while being guided by both parts, and can be gripped by the gripped part 18, and at the center of the outer end surface of the closing side of the fitting hole 12. It has a structure that can be pushed and fitted into the cutter mounting part 3 with
Granted 7t.

As a cutter automatic exchange mechanism, the cutter mounting section 3
Alternatively, a cutter exchange arm 22i that can be rotated nine times is equipped on a cart 20 that can be moved from a distance or from a distance.
This cutter exchange arm 22 is provided with a stopper 24i that faces the cutter mounting portion 3 in a concentric manner together with the chuck means 26, and the carriage 20 (/ When moving forward, the cutter 11 is moved by pushing it at the center with the metal 24. Therefore, in this invention, as described above as an effect of the invention, one chuck means of the cutter exchange arm 22 is used. Hold the cutter 11 at 26 and move the cart 20 forward.
Bring the cutter 11 up to a point M where it is guided into the bottle support hole 9 of the clamp bar 8 and the cutter mounting portion 3 on both sides of the inner periphery, and release the grip on the cutter 11 by the chuck means 26. By pushing the cutter 11 against the pad 24 at the center of the needle and fitting it into the cutter mounting portion 3, the thin-walled cutter can be corrected to a position that is precisely concentric with the main shaft 2, and the cutter mounting portion can be inserted without any difficulty. 3 can be fitted.

The required clamping of the cutter 11 can be performed by using the clamp bar 8, and the removal of the used cutter 11 can be performed by force/gripping by the chuck means 26 and by moving the cart 20.
Furthermore, since the cutter exchange arm 22 has a rotation function, removal of the cutter from each chuck means 26 and installation of a new cutter are performed at the cutter mounting portion 3.
This can be done while the machine is operating on the opposite side.

As described above, the present invention provides a new automatic cutter changing type shaving machine which can greatly save the time required to change the cutter for shaving. , greatly contributes to improving the efficiency of shaving processing.

[Brief explanation of the drawing]

The figures illustrate a shaving machine according to the present invention, in which Figure 1 is a front view of the main parts, and Figure 2 shows a part of the parts shown in Figure 1.
The front view of the box is different from the one shown in the figure.
A front view showing a modification of the part shown in the figure, FIG. 4 is a partially vertical front view of other important parts, FIG. 5 is a vertical side view of the main part of the same place, and FIG. Figure 7 is a cross-sectional view taken along the line ■-■ in Figure 5, and Figure 8 is a cross-sectional view of the entire shaving machine. 9 is a schematic side view of the entire shaving machine; FIG. 10 is a schematic plan view of the entire shaving machine;
FIG. 1 is a sequence diagram illustrating how to replace the cutter.

Claims (1)

[Claims] A cutter mounting portion (3) of a main shaft (2) equipped on a cutter head (1) is provided at one end of the main shaft (2), and an inner end of the cutter mounting portion (3) is provided at one end of the main shaft (2). A cutter positioning step (5) is formed on the main shaft (2), and a cutter positioning step (5) is formed on the main shaft (2).
) with a through hole (6) formed on its axis, and a clamp bar (8) that is driven forward and backward by a forward and backward drive means (7) mounted on the main shaft (2) on the opposite side of the cutter mounting portion (3). is supported in the through hole (6),
A pin bearing hole (9) is formed at the end of the clamp bar (8) on the side of the cutter attachment part (3), the axis of which coincides with the main shaft (2), and one end of which is open.
), and a plurality of cutters (11) are selectively mounted on the main shaft (2), the cutter mounting portion (3) being formed such that its axis coincides with the cutter axis; One end closed fitting hole (
12) a fitting hole (12) having a key groove (14) into which a key (13) provided on the cutter mounting part (3) is fitted; and (b) the cutter positioning stepped part. (
(c) a positioning end face (15) that is abutted against the positioning end face (15); The pin (16) is fitted into the pin bearing hole (9) of the clamp bar (3) described above, and is clamped by the clamp member (10) by the backward movement of the clamp bar (8). a pin (16) having a clamped portion (17); (d) the positioning end surface (15);
); and a grasped part (18) formed at the end opposite to the cutter mounting part (3), supported so as to be movable in directions toward and away from the cutter mounting part (3), and driven by a travel drive means (19). (e) is a cart (20) that is rotatable around a fulcrum shaft (21) perpendicular to the running direction of the cart (20), and has one end surface and the other end surface selectively a cutter exchange arm (22) that is rotated so as to face the cutter mounting portion (3), and a cutter phasing device (23) and a cutter phasing device (23) on each end surface of the cutter changing arm (22) are arranged so as to face the cutter mounting portion (3); (3) when the main shaft (2) is placed facing the main shaft (2).
); (f) a rotation drive means (25) for rotating the cutter exchange arm (22); (g); ), a pair of movable chuck means (26) supported by the cutter exchange arm (22), each chuck means (26) having a central position relative to each cutter (11); The stopper (24) is brought into contact with each cutter (11), and the cutter phasing tool (23) is brought into contact with the cutter (11).
), each cutter (11)
a pair of movable chuck means (26) configured to be capable of being gripped by the gripped portion (18); (h) provided on the cutter exchange arm (22);
A cutter automatic exchange type shaving device characterized by comprising a pair of chuck drive means (27) for selectively gripping the pair of movable chuck means (26) described above, and a cart (20) equipped with the following. Machine.