JPH0696214B2 - Cutting machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention cuts a long rod-shaped workpiece such as a steel pipe to a predetermined size, and chamfers an edge of the cut constant-sized workpiece. Etc. The present invention relates to a cutting device capable of performing necessary processing.

(Prior Art and Problems Thereof) Conventionally, when performing constant-size cutting and processing of a long work piece as described above, a constant-size cutting device and a processing device are installed in parallel and The workpiece was transferred to the processing device by hand or by a hand-over device such as a manipulator.

In such a conventional configuration, not only the equipment cost is very high, but also the area occupied by the entire equipment is large, and further, the cycle time from the slicing to the machining is long.

(Means for Solving the Problem) In order to solve the above-mentioned conventional problems, the present invention provides a cutting action position, a machining action position, and a cutting action position around a rotating body that rotates around a horizontal axis. The delivery action positions are set at equal intervals in the circumferential direction, and at least three gripping means that can be simultaneously located at the respective positions are provided around the rotator at equal intervals in the circumferential direction, and the rotator is described above. Driving means for intermittently rotating and driving every one pitch between the gripping means is provided, and the long length is fed to the cutting action position in the axial direction and the tip end is gripped by the gripping means located at the cutting action position. A cutting means for sizing the work piece by sizing is provided on the upper side of the gripping means, and a sizing cutting work piece which is gripped at the working position by the gripping means located at the working position. Is provided with a processing means for processing Further, there is proposed a cutting processing device in which, at the delivery action position, delivery means is provided for delivering the processed fixed-size cutting workpiece to be grasped by the grasping means located at the delivery action position from the grasping means. It is a thing.

(Operation of the Invention) When the distance between the tip of the long work piece fed in the axial direction and the cutting position of the cutting means reaches the cutting set length at the cutting operation position, the cutting is performed. By the gripping means waiting at the working position, the tip of the long work piece,
That is, the portion to be cut and cut is grasped, and in such a state, the long work piece is cut to a predetermined size by the cutting means. Next, the rotating body is rotated by a predetermined pitch to move the gripping means for gripping the workpiece after the constant-size cutting from the cutting operation position to the processing operation position, and the grasped constant-size workpiece is processed by the processing means. Correspond to. In this state, the processing means causes the desired size of the workpiece to be machined. When the processing is completed, the rotating body is rotated again by a predetermined pitch to move the gripping means for gripping the machined fixed-size workpiece from the processing operation position to the delivery operation position, and by the delivery means, the processed constant size is cut from the grasping means. Send out the work piece. After that, the rotary body is rotated again by a predetermined pitch to move the emptied gripping means to the cutting action position again, thereby completing a series of actions of cutting, processing and feeding.

As described above, by intermittently rotating the rotating body, it is possible to sequentially perform the constant-size cutting of the long work piece, the processing of the work piece that has been cut to the predetermined size, and the delivery of the processed work piece. However, since the cutting action position, the machining action position, and the feeding action position are set around the rotating body, and the necessary means are arranged at each action position, these action positions are linearly arranged in parallel on the horizontal plane. The installation floor area of the entire device can be reduced compared to the case where

Moreover, since the means for transporting the workpiece between the respective operating positions is composed of the gripping means for separating the long workpiece, which is necessary for the constant-length cutting of the long workpiece, and the rotating body, a dedicated transport Compared with the case where the means must be used, the whole apparatus can be made small and simple.

Further, since the workpiece is continuously held by one holding means from before the constant-size cutting until it is sent through the processing step, the workpiece can be accurately positioned at each operating position. In addition, it is possible to shorten the cycle time of a series of cutting, processing and sending.

Furthermore, during the processing operation of the sizing workpiece, the feeding operation of the processed workpiece processed in the previous process and the sizing of the long workpiece to obtain the sizing workpiece to be processed next The action and the action can be performed at the same time.

(Example) Hereinafter, one example of the present invention will be described with reference to the accompanying drawings.

In FIGS. 1 and 2, (1) is a rotating body rotatably supported around a horizontal axis, and (2) is a steel pipe fed horizontally in the axial direction (long workpiece). A stopper for receiving the tip of (3), (4) cutting means for cutting the steel pipe (3), (5a) and (5b) chamfering means as a processing means, (6) a processed steel pipe delivering means, (7) ) Is a processed steel pipe delivery chute, and (8) is a stopper for end cutting. The drive means (9), the cutting means (4), and one chamfering means (5a) of the rotating body (1) are fixed bases (10) arranged on one side of the rotating body (1). The processed steel pipe delivery chute (7) and the end cutting stopper (8) are installed on the fixed base (11) arranged on the other side of the rotating body (1). The stopper (2) and the other chamfering means (5b) are installed on a movable base (12) provided on the fixed base (10).

The rotating body (1) is rotatable about a horizontal axis parallel to the axis of the steel pipe (3) fed,
As shown in the figure, three gripping means (13a) to (13c) are provided on the peripheral portion at equal intervals. However, the gripping means (13a) to (13c) have three action positions set around the rotating body (1) at regular intervals, that is, the cutting action positions A corresponding to the cutting means (4), Chamfering means (5
a) A machining action position B corresponding to (5b), and a delivery action position C corresponding to the delivery means (6) and located directly above the rotating body (1), every 120 degrees of the rotating body (1). It is possible to respond sequentially with intermittent rotation.

The movable table (12), as shown in FIGS. 3 and 4,
A guide rail (14) installed on a fixed base (11) supports the fixed base (11) so that the guide rail (14) can move in a direction parallel to the rotation axis of the rotating body (1). A female screw body (17) screwed to a screw shaft (16) rotatably supported by the upper bearing member (15) is fixedly mounted on the movable base (12),
The movable table (12) can be moved back and forth by rotating the screw shaft (16) with the handle (18) attached to the end thereof. (19) is the movable base (1
It is a clamp for fixing 2) to the fixed base (11) via a clamp rail (20) laid on the fixed base (11).

The drive means (9) of the rotating body (1) is, as shown in FIG. 5, a drive shaft (22) perpendicular to the rotating shaft (21) having the rotating body (1) concentrically attached to the outer end thereof. The rotating shaft (21) is for intermittently driving the rotating body (1) in one direction by 120 degrees via the casing (23) mounted on the fixed base (10). ) Is rotatably and axially movably supported, and a push-pull shaft (15) that is push-pull driven by a cylinder unit (24) attached to the casing (23) is provided at the inner end. Bevel gears (26), which are connected concentrically so that only relative rotation is possible.
Is attached. Also, on the peripheral surface of the rotating shaft (21),
Stopper pin (2) attached to the casing (23)
The same groove (28) is formed in which the tip (27a) of 7) is loosely fitted, and in this peripheral groove (28) are three recesses (28a) into which the tip (27a) of the stopper pin (27) fits. Are continuously arranged at equal intervals in the circumferential direction. Further, the outer end of the rotary shaft (21) has a crown gear-shaped movable tooth that can be fitted in and disengaged from the crown gear-shaped fixed tooth ring (29) fixed to the casing (23) side in the axial direction. A ring (30) is attached. The bevel gear (26) and the bevel gear (31) that can be engaged and disengaged are attached to the upper end of the vertical drive shaft (22), and the lower end of the drive shaft (22) is attached by a cylinder unit (not shown). A pinion gear (33) that engages with a rack gear (32) driven by pushing and pulling is attached.

Therefore, as shown in FIG. 5, the cylinder unit (24)
When the push-pull shaft (25) is pulled in by the and the rotary shaft (21) is retracted to the backward limit, the movable gear wheel (30) on the rotary shaft (21) side and the fixed tooth wheel (29) on the casing (23) side are ) And are fitted to each other, and the bevel gear (2
6) is disengaged from the bevel gear (31) on the drive shaft (22) side. Also, the tip (27a) of the stopper pin (27) has a groove (2
It is fitted in one recess (28a) in 8). That is, the rotating shaft (21) (rotating body (1)) is locked so that it cannot rotate, but from this state, the cylinder unit (24)
When the push-pull shaft (25) is pushed out by the and the rotary shaft (21) is advanced to the forward limit, the rotary shaft (2
The movable toothed wheel (30) on the 1) side is disengaged from the fixed toothed wheel (29) on the casing (23) side, and the bevel gear (26) on the rotating shaft (21) side is the bevel gear on the drive shaft (22) side. It meshes with the gear (31). Further, the tip end (27a) of the stopper pin (27) is disengaged from the recess (28a) of the circumferential groove (28), and the rotary shaft (21) becomes rotatable.

Therefore, when the drive shaft (22) is rotated via the rack gear (32) and the pinion gear (33) shown in FIG. 5, the rotation is transferred to the rotary shaft (21) via the bevel gears (31) (26). This is transmitted, and the rotating body (1) is rotated. At this time, the stroke of the rack gear (32) is controlled so that the rotary shaft (21) (rotary body (1)) rotates by 120 degrees, and after the drive is stopped, the cylinder unit (24) rotates the cylinder as described above. By moving the shaft (21) backward to the backward limit, the rotary shaft (21) (rotating body (1)) can be locked again as shown in FIG. The rack gear (32) is returned to the state where the bevel gears (26) and (31) are disengaged by locking the rotary shaft (21) as described above.

As shown in FIGS. 7 to 10, the gripping means (13a) to (13c) attached to the periphery of the rotating body (1) are
A fixed arm (34) fixed to the rotating body (1), a movable arm (36) capable of swinging in a perspective direction around the support shaft (35) with respect to the fixed arm (34), and the movable arm (36). (Disc spring) (38) for urging) in the closing direction via a push pin (37), and grip release means for opening the movable arm (36) against the urging force of the spring (38). It consists of (39).

The grip releasing means (39) penetrates the rotating body (1) and is movable within a certain range, and the cam shaft (40).
A cam driven roller (41a) held by the rotating body (1) between the movable arm (36) and the operated portion (36a) of the movable arm (36) and abutting on the cam surface (40a) of the cam shaft (40). A push pin (41) provided at the inner end, a support roller (42) axially supported by the rotating body (1) so as to receive the cam shaft (40) on the side opposite to the push pin (41), and the cam. The support shaft (41b) of the cam driven roller (41a) and the cam follower roller (41a) are urged to urge the push pin (41) in a direction to bring the driven roller (41a) into contact with the cam surface (40a) of the cam shaft (40). A pair of springs (43) interposed between the support roller (42) and the support shaft (42a), and a pair of springs (43) connected to both ends of a member (44) attached to one end of the cam shaft (40). The guide pin (45) and the cam shaft (40) are held between the member (44) and the rotating body (1) so as to hold the guide shaft (40) in the backward limit. A pair of springs (46) loosely fitted to the pin (45), an operated member (47) also serving as a stopper attached to the other end of the cam shaft (40), and a rotary body drive as shown in FIG. It is composed of two camshaft operating cylinder units (48) (49) attached to the casing (23) of the means (9).

The operated member (47) includes a locked portion (47a) protruding in a direction away from the rotation axis of the rotating body (1), and the piston rod of the cylinder unit (48) (49). Pulling rollers (48b) (49b) that can enter the inside of the locked portion (47a) of the operated member (47) by the rotation of the rotating body (1) are provided on the (48a) and (49a). It is installed. However, the two cylinder units (48) (49) are the operated members of the gripping means at the cutting action position A among the three gripping means (13a) to (13c) as shown in FIG. A position at which the pulling roller (48b) can engage with (47) and a position at which the pulling roller (49b) can engage with the operated member (47) in the gripping means at the feed action position C; , Respectively.

Therefore, when the rotating body (1) is stopped at a predetermined position,
When the pull-in rollers (48b) (49b) are moved in the pull-in direction by the cylinder unit (4) (49) as shown by the phantom line in FIG. 9, these rollers (48b)
The locked portion (4) of the operated member (47) engaged with (49b)
7a), the cam shaft (40) is pulled in against the urging force of the spring (46), and the cam surface (40a) of the cam follower roller (41a) moves the push pin (41) to the spring (43). ), The push pin (41) pushes the operated portion (36a) of the movable arm (36) to push the movable arm (36) into the spring (38). It is opened against the urging force of. That is, the movable arm (36) in the gripping means (for example, the gripping means (13a) (13c) stopped at the cutting action position A and the delivery action position C has a fixed arm (34) around the support shaft (35). When the retracting rollers (48b) (49b) of the cylinder unit (48) (49) are returned, the cam shaft (40) is retracted by the urging force of the spring (46). With the return, the push pin (41) is returned and returned by the urging force of the spring (43), so that the movable arm (36) is closed and returned by the urging force of the spring (38).

Fixed arm (3) in the gripping means (13a) to (13c)
4) and the movable arm (36) have two gripping pieces (50a) (50b) and (51a) (51b) attached to the inside so that they can be exchanged, as shown in FIGS. 7 and 8. The V-shaped attachment members (52) (53) are detachably attached so as to face each other. However, the steel pipe (3) is gripped by the four gripping pieces (50a) to (51b) in the circumferential direction between the fixed arm (34) and the movable arm (36). The illustrated gripping pieces (50a) to (51b) are used when the diameter of the steel pipe (3) to be gripped is the maximum and the cutting length is longer than the length of the gripping means (13a) to (13c). The holding pieces (50a) to (51b) shown by phantom lines in FIG. 8 are operated when the diameter and the cutting length of the steel pipe (3) to be held are minimum. In this way, the grip pieces (50a) to (51b)
Can be replaced with one corresponding to the diameter and cutting length of the steel pipe (3) to be gripped.

The stopper (2) shown in FIG. 1 passes through the cutting means (4) and the gripping means (eg, gripping means (13a)) stopped at the cutting action position A and is fed in the axial direction. Stopper plate (5
4) is equipped. This stopper plate (54)
As shown in FIG. 12 to FIG. 14, it is attached to a movable body (57) supported by a pair of guide shafts (56) installed on a support base (55) so as to be movable in the axial direction of the steel pipe (3). The movable body (57) is supported by the guide shaft (56) so as to be movable in the axial direction of the steel pipe (3) and is reciprocally moved by the cylinder unit (58). It is connected via a (60) so as to be movable in a fixed plate range in the distance direction, and is held at a position most distant from the drive body (59) by a spring (61) interposed therebetween. Reference numeral (62) is a stopper for the forward limit of the drive body (59), and (63) is a stopper for the approach limit of the movable body (57) to the drive body (59).

The end-cutting stopper (8) shown in FIG. 1 is a stopper which can be slidably inserted into and removed from the gripping means (eg, gripping means (13a)) stopped at the cutting action position A as shown in FIG. It is equipped with a plate (64). The stopper plate (64) is attached to a movable body (67) supported by the slide guide (65) and reciprocally moved by the cylinder unit (66) to support the slide guide (65) and the cylinder unit (66). The support base (68) is configured such that its position can be adjusted in the axial direction of the steel pipe (3).

The cutting means (4) shown in FIG. 1 is, as shown in FIGS. 15 to 17, a rotary cylinder rotatably supported by a support base (69a) concentrically with the steel pipe (3) to be fed. Body (7
0), a sliding cylinder (71) fitted inside the rotating cylinder (70) so as to be movable in the axial direction, and the sliding cylinder (71).
And a cutting unit (73) attached to the front end of the rotating cylindrical body (70) and a fixed cylindrical body (72) in which the steel pipe (3) penetrates and moves inside. The fixed cylindrical body (72) has a rear end portion which is attached to the support base (69b) via the attachment / detachment mechanism (74) and which is provided on the sliding cylindrical body (7
1) is supported so that it can be inserted into and removed from the rotary cylinder (7).
0) is interlocked with the motor (77) shown in FIGS. 1 and 11 via the pulley (75) attached to the rear end and the belt (76).

The rotating cylinder body (70) and the sliding cylinder body (71) constitute a cylinder unit (78) in which the rotating cylinder body (70) is a cylinder and the sliding cylinder body (71) is a piston. There is. That is, a piston part (78a) is continuously provided on the outer circumference of the sliding cylinder (71), and a cylinder chamber (78b) in which the piston part (78a) is fitted on the inner circumference of the rotating cylinder (70).
And a fluid supply path (79a) (79b) communicating with both ends of the cylinder chamber (78b) is provided in the support base (69a). (80) is a rotary fluid coupling interposed between the rotary cylinder (70) and the support base (69a),
The fluid supply passages (79a) (79b) are provided at both ends of the cylinder chamber (78b) of the rotating cylindrical body (70), and the fluid inlet and outlet (7) are provided.
8c) (78d) fluid flow path (81a) (81
b). Therefore, by supplying the pressure fluid from the fluid supply path (79a) into the cylinder chamber (78b),
The sliding cylinder (71) moves backward in the direction opposite to the steel pipe feeding direction, and the pressure fluid is supplied into the cylinder chamber (78b) from the fluid supply path (79a), whereby the sliding cylinder (71) is moved. It will move forward in the steel pipe feeding direction.

The cutting unit (73) is a tool rest (84) supported by a casing (82) attached to the front end of the rotary cylinder (70) via a slide guide (83) so as to be diametrically movable. A tool support member (85) mounted on the tool rest (84) so that the fixed position can be adjusted in the moving direction, a cutting tool (86) mounted on the tool support member (85),
Rack gear part (87) formed inside the tool rest (84)
A pinion gear (88) axially supported in the casing (82) so as to mesh with the rack gear (89) attached to the front end of the sliding cylindrical body (71) so as to mesh with the pinion gear (88). It consists of Therefore, when the sliding cylinder body (71) moves backward in the direction opposite to the steel pipe feeding direction, the tool rest (8) is passed through the rack gear (89), the pinion gear (88), and the rack gear portion (87).
4) moves in the centripetal direction and the sliding cylindrical body (71) moves forward in the steel pipe feeding direction, whereby the rack gear (89), the pinion gear (88), and the rack gear part (87).
The tool rest (84) moves in the centrifugal direction via the.

A stopper cylindrical body (91) is provided at the rear end portion of the rotating cylindrical body (70) so as to be positionally adjustable in the axial direction and fixed by a lock nut (90). . This stopper cylindrical body (91) receives the sliding cylindrical body (71) that moves backward, and is provided with rods (92) that are movable in the axial direction at a plurality of circumferential positions thereof. A ring to be detected (94) detected by the proximity switch (93) is coupled to the rear end of the rod (92), and the front end head (92a) of each rod (92) and the stopper cylinder ( A spring (95) for urging the rod (92) toward the sliding cylindrical body (71) is interposed between the spring (95) and the (91). In addition, stopper cylinder (7
The front end of (1) is provided with a recess (96) into which the front end head (92a) of each rod (92) is inserted.

Therefore, with respect to the sliding cylinder body (71) and the amount of backward movement, that is, the cutting depth in the centripetal direction of the tool rest (84) (cutting tool (86)), the rear end of the sliding cylinder body (71) is the stopper. It is limited by the position of contact with the front end of the working cylinder (91). Then, when the rear end of the sliding cylindrical body (71) contacts the front end of the stopper cylindrical body (91), the plurality of rods (92) are moved backward against the urging force of the spring (95). Accordingly, the detected ring (94) also moves backward, so that by detecting the movement of the detected ring (94) by the proximity switch (93), the sliding cylindrical body (71) is restricted to move backward. It is possible to detect that the position has been reached.

A steel pipe guiding cylinder (72a) corresponding to the diameter of the steel pipe (3) is detachably connected to the front end of the fixed cylindrical body (72).

The cutting apparatus of the present invention configured as described above can be used as follows.

First, as shown in FIG. 12, the stopper plate (54) of the stopper (2) was moved by the cylinder unit (58) to the forward limit position (the position where the driving body (59) contacts the stopper (62)). At this time, the distance 1 from the cutting position P by the cutting means (4) to the stopper plate (54) is smaller than the set cutting length L, and the moving distance (stopper (57) of the movable body (57) with respect to the driving body (59) is reduced. The movable table (12) of FIGS. 3 and 4 supporting the stopper (2) and the chamfering means (5b) so that the distance (d) between the (63) and the driving body (59) is shortened. Adjust the position of.

The steel pipe (3) to be cut is the inside of the rotary cylinder (70) in the cutting means (4) as shown in FIG. 18 (more specifically, the inside of the fixed cylinder (72) in FIG. 15). Sent to
When it is necessary to cut and remove the irregular portion of the end of the steel pipe (3), the stopper plate (64) of the stopper for end cutting (8) is attached as shown by phantom lines in FIGS. 12 and 18, respectively. The cylinder unit (66) advances and moves it to the forward limit position, and the tip of the stopper plate (64) advances to a predetermined position inside the gripping means at the cutting action position A, for example, the gripping means (13a). At this time, the stopper plate (64) moves in the space between the fixed arm side grip pieces (50a) (50b) and the movable arm side grip pieces (51a) (51b) of the grip means (13a). . At this time, the gripping means (13a) at the cutting action position A is opened as described above by the cylinder unit (48) of FIGS. 9 to 11 provided corresponding to the cutting action position A. (Ie, the movable arm (36) is opened relative to the fixed arm (34) shown in FIGS. 7 and 8).

The tip of the steel pipe (3) is the stopper (8) for cutting the end.
If it comes into contact with the stopper plate (64), the releasing operation of the holding means by the cylinder unit (48) is released to close the holding means (13a) at the cutting action position A (that is, FIG. 7 and FIG. Movable arm (36) shown in FIG.
And the end cut portion of the steel pipe (3) is gripped.
In this state, the feeding of the steel pipe (3) is stopped, the cutting means (4) is operated, and the steel pipe (3) is cut by the cutting blade (86) shown in FIGS. 15 and 16. That is, by rotating the cutting unit (73) around the steel pipe (3) by the rotating cylindrical body (70) and moving the sliding cylindrical body (71) backward by the cylinder unit (78), the tool rest (84 ) Via a blade supporting member (85), the cutting blade (86) moves in the centripetal direction while rotating around the steel pipe (3), and is fixed by the gripping means (13a). (3) will be cut.

When the end cutting of the steel pipe (3) has already been completed in the previous step, or when the end cutting is unnecessary, the stopper plate (54) of the stopper (2) is attached to the cylinder unit (58) as shown in FIG. Move forward to the forward limit position. In this case, the tip of the steel pipe (3) which is sent through the inside of the cutting means (4) comes into contact with the stopper plate (54), and this stopper plate (54) together with the movable body (57) is spring (61). ) Against the biasing force. However, if the stopper plate (54) and the movable body (57) move backward by a predetermined distance d and the stopper (63) contacts the driving body (59), the stopper plate is moved from the cutting position P by the cutting means (4). The distance to the steel pipe tip that abuts (54) is the cut length L
Therefore, in such a state, the gripping means (13a) is switched from the gripping action released state to the gripping action state to grip the steel pipe (3), and the feeding of the steel pipe (3) is stopped, and Cutting means as described above (4)
The steel pipe (3) is cut at the cutting position P by.

Proximity switch (93) that the sliding cylinder body (71) shown in FIG. 15 has come into contact with the stopper cylinder body (91) after the end cutting or the constant size cutting of the steel pipe (3) is completed. Is detected, the stopper plate (64) of the end cutting stopper (8) or the stopper plate (54) of the stopper (2) is moved backward to the original standby position, and the rotating body (1 ) Is rotated by 120 degrees and the gripping means (13
Steel pipe end cut part or a certain size cut steel pipe that a) holds (3)
Is moved to the next processing operation position B. This rotating body (1)
Since the rotating body (1) is pushed out slightly forward as shown in FIG. 6 during the rotational drive of, the fixed-size cutting steel pipe (3) and the cutting means (4) gripped by the gripping means (13a). The cutting blade (86) is separated from each other in the axial direction of the steel pipe, and the two do not come into sliding contact with each other when the rotating body (1) rotates.

The chamfering means (5a) (5b) arranged on both sides of the rotating body (1) at the working position B are the edge of the sizing cut steel pipe (3) as shown in FIG. 2 and FIG. Rotating body for chamfering (97)
And a motor (98) for rotationally driving the same, and a cylinder unit (100) for reciprocally moving the rotating body (97) and a base (99) supporting the motor (98) in the axial direction of the steel pipe.
The chamfering means (5b) on the same side as the stopper (2) has a movable base (12) for supporting the stopper (2), that is, the set cutting length of the steel pipe (3) as described above. Since it is installed on the movable table (12) whose position is adjusted according to the above, when the sizing cutting steel pipe (3) is fed to the working position B as described above by the rotation of the rotating body (1). The chamfering rotary body (97) of the double-sided chamfering means (5a) (5b) is located at a position apart from both ends of the sizing steel pipe (3) by a certain distance. Therefore, by moving the base (99) forward by the cylinder unit (100) by a certain distance while the chamfering rotary body (97) is rotated by the motor (98), the working position B
The chamfering rotating body (97) that rotates is fitted to both ends of the fixed-size cutting steel pipe (3) gripped by the gripping means (13a), and chamfering of both end edges of the steel pipe (3) is performed. Can be done. Of course, chamfering is not performed on the steel pipe end cut portion.

When the chamfering process for the above-mentioned fixed-size cut steel pipe (3) is completed, the chamfering rotary member (9) of the double-sided chamfering means (5a) (5b).
After retracting 7) to the original standby position, the rotating body (1)
Is rotated by 120 degrees as described above by the drive means (9) to move the chamfered sizing-cut steel pipe (3) to the feeding action position C. As shown in FIGS. 1 and 2, the feeding means (6) arranged at the feeding action position C includes a pushing plate (101) and a cylinder unit (102) for reciprocating the pushing plate (101). As shown in FIG. 20, the gripping means (13a) reaching the delivery action position C is shown in FIG.
By moving the pushing plate (101) forward with the cylinder unit (49) shown in FIG. 11 released as described above, the chamfered fixed-size cut steel pipe ( 3) can be extruded onto the worked steel pipe delivery chute (7) shown in FIGS. 1 and 2. At this time, the extrusion plate (10
1) is a gripping piece (50a) (50b) on the fixed arm side and a gripping piece (51a) (51b) on the movable arm side in the gripping means (13a).
It will move in the space between and.

Similarly to the chamfered sizing-cutting steel pipe (3), the end portion of the steel pipe that has passed through the working position B without being chamfered has the push-out plate (101) at the feeding position C as described above. By this, it is possible to push out from the gripping means (13a) onto the chute (7). In this case, as shown in FIG. 1, the direction of the sorting movable chute (7a) connected to the tip of the chute (7) is switched to a different place from the chamfered sizing steel pipe (3). It is possible to deliver the steel pipe end cut portion.

The above-mentioned fixed-size cutting of the steel pipe (3) at the cutting action position A, chamfering of the fixed-size cutting steel pipe (3) at the working action position B, and the processed fixed-size cutting steel pipe (3 at the feeding action position C). ) Are simultaneously sent in parallel while the rotating body (1) is stopped.

As shown in FIG. 21, when the set cutting length is the minimum, the gripping piece (51
a) to (51b) are to be mounted inside the U-shaped mounting members (52) (53) of the gripping means (13a) to (13c), but in this case, as shown by phantom lines, the stoppers are provided. Chamfering rotor (9) on the plate (54) and chamfering means (5b) side
7) enters into the inside of the gripping means (13a) to (13c).

Although a pair of chamfering means (5a) and (5b) for chamfering both ends of the workpiece (steel pipe (3)) are used as the machining means in the above embodiment, the machining means other than the chamfering means is used. Any processing means can be used.

(Effects of the Invention) As described above, the cutting apparatus of the present invention sequentially performs constant-dimension cutting of a long workpiece, machining of a workpiece that has been subjected to constant-dimension cutting, and delivery of a processed workpiece. In particular, according to the configuration of the present invention, it is possible to configure the entire apparatus in a small size to reduce the installation floor area and to convey the workpiece between the working positions. In addition, since the gripping means for separating the long work piece, which is necessary when cutting the long work piece at a constant size, is used, the whole device can be compared to the case where a gripping means dedicated to conveyance must be used. It can be configured simply.

Further, since the work piece is continuously gripped by one gripping means from the beginning to the end, the work piece can be accurately positioned at each working position, and the cutting, processing, and feeding can be performed. A series of cycle times can be shortened.

Furthermore, since cutting, processing, and feeding of a long workpiece can be simultaneously performed in parallel, each means can be operated efficiently and a series of operations can be performed very efficiently.

[Brief description of drawings]

FIG. 1 is a plan view of the entire apparatus, FIG. 2 is a rear view of the same, FIG. 3 is a side view showing a stopper, a chamfering means, and a movable base supporting these, and FIG. 4 is a plan view of the movable base. FIG. 5 is a partial vertical cross-sectional side view showing the drive means for the rotating body, and FIG. 6 is a vertical cross-sectional side view showing the state when the drive means is driven.
The figure is a vertical sectional front view showing the gripping means and the grip releasing means.
8 is a cross-sectional plan view of the gripping means, FIG. 9 is a vertical cross-sectional side view of FIG. 7, FIG. 10 is a cross-sectional plan view of FIG. 9, and FIG. 11 is a rotary body driving means, cutting means and chamfering means. Front view showing, No. 12
Figure is a plan view showing a stopper for steel pipe receiving and stopper for end cutting, FIG. 13 is a side view showing a stopper plate driving mechanism of the stopper for steel pipe receiving, FIG. 14 is a front view of FIG. 13, and FIG. Vertical side view of cutting means, 16th
FIG. 17 is a front view showing a cutting unit of the cutting means, FIG. 17 is a cross-sectional bottom view of the cutting unit, FIGS. 18 to 20 are operation explanatory views, and FIG. 21 is a cross-sectional view illustrating a modified example of the gripping means. It is a top view. (1) …… Rotator, (2) …… Steel pipe tip receiving stopper, (3) …… Steel pipe (long workpiece), (4) ……
Cutting means, (5a) (5b) ... Chamfering means (processing means),
(6) ... Delivery means, (7) ... Worked steel pipe delivery chute, (8) ... End cutting stopper, (9) ... Rotating body driving means, (10) (11) ... Fixed base , (12) ... movable table, (13a) to (13c) ... gripping means, (34) ... fixed arm, (36) ... movable arm, (39) ... gripping release means, (40) ... … Camshaft, (48) (49) …… Grip release cylinder unit, (50a) to (51b) …… Grip piece, (5
2) (53): U-shaped mounting member, (54) (64): Stopper plate, (58) (66): Stopper plate driving cylinder unit, (73): Cutting unit, (78) ... Cylinder unit for driving turret, (8
4) ... Turret, (86) ... Cutting tool, (97) ... Roller for chamfering, (101) ... Extrusion plate for feeding.

Claims (1)

[Claims] 1. A cutting action position, a machining action position, and a delivery action position are set at equal intervals in the circumferential direction around a rotary body that rotates around a horizontal axis, and the cutting action position, the machining action position, and the feed action position are set around the rotary body. At least three gripping means that can be simultaneously located in each position are provided at equal intervals in the circumferential direction, and driving means for intermittently rotating the rotating body by one pitch between the gripping means is provided. Is provided with cutting means for cutting the long workpiece, which is fed in the axial direction and held by the holding means whose tip is located at the cutting action position, to a predetermined size on the upper side of the holding means. Then, at the machining action position, a machining means for machining the work piece to be cut by the dimension held by the grasping device located at the machining action position is provided,
Further, in the cutting action position, there is provided a cutting device which is provided with a feeding means for feeding the processed constant-size cutting workpiece to be gripped by the gripping unit located at the feeding position from the gripping unit.