JPS63144928A - Tool clamper opening/closing device in automatic tool exchanger - Google Patents

Abstract

PURPOSE:To open and close only a prescribed tool clamper in good timing by engaging and disengaging the cam link of the prescribed tool clamper and the cam member of a cam cylinder installed onto a swing arm by the turn of a tool magazine unit, accompanied with the swing of the swing arm. CONSTITUTION:The cam link 49 of a prescribed tool clamper 33 which shifts toward a machine tool and a cam member 61 installed onto the rod of a cam cylinder 60 can be engaged and disengaged by relatively turning a tool magazine unit and a swing arm 20, accompanied with the swing of the swing arm 20. Therefore, the tool clamper 33 can be freely opened and closed by the advance and retreat of the cam cylinder 60.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Use) The present invention relates to an opening/closing device for a tool clamper in an automatic tool changer.

(Problems to be Solved by the Prior Art and the Invention) While a workpiece is being processed with a tool attached to a machine tool, a tool magazine unit containing replacement tools is kept on standby at a distance, and 2. Description of the Related Art Automatic tool changers are widely known that approach the tool mounting section of a machine tool and directly change tools when the workpiece has been processed and the tools are replaced.

When directly changing tools using this tool changer, after positioning a specified tool clamper of a tool magazine unit having multiple tool clampers toward the tool mounting section of the machine tool, move the tool magazine unit toward the machine tool. It is necessary to move a predetermined tool clamper toward the tool mounting part of the machine tool by swinging the tool to the machine tool, and to open and close this tool clamper to receive the tool from the machine tool and deliver the tool to the machine tool. be.

As a means of opening and closing the tool clampers, it is conceivable to equip each tool clamper with an opening/closing device and selectively open/close only a predetermined tool clamper, but this would require as many opening/closing devices as the number of tool clampers. In addition, a control device for opening and closing only a predetermined tool clamper is also required, leading to an increase in size and complexity of the device. Furthermore, is it possible to install a separate opening/closing device on the machine tool side that opens and closes the clamper by engaging and disengaging only the specified tool clamper? This is undesirable.

The present invention has been made to solve the above-mentioned problems, and its purpose is to use the relative movement of the tool magazine unit and the swing arm caused by the swinging of the swing arm to control only a predetermined tool clamper. To provide an opening/closing device for a tool clamper in an automatic tool changer having a simple structure and opening/closing in a timely manner.

(Means for solving the problem) The means for solving the above problem is to install a tool magazine unit on the side of the machine tool where tools are exchanged, and to freely rotate the tool magazine unit at the tip of the machine tool. a swing arm that is supported by a swing arm and can swing freely by a swing drive 7; a plurality of tool clampers for tool exchange that are attached in the circumferential direction of the tool magazine unit and open and close by the swing of the cam link; a rotating mechanism attached to the arm and causing relative rotation between the tool magazine unit and the swing arm as the swing arm swings; A cam cylinder that moves forward and backward toward the tool magazine unit, and a cam link of a predetermined tool clamper of the tool magazine unit that is attached to the loft end of the cam cylinder and rotates as the tool magazine unit swings as the swing arm swings. A tool clamper opening/closing device in an automatic tool changer is constituted by a cam member that engages and disengages from the tool clamper and swings the cam link to open and close the tool clamper.

(Function) As the swing arm swings, the magazine uni-soto and the swing arm are rotated relative to each other, and the cam link and cam of the predetermined tool clamper swing toward the machine tool and move 8 times. Cylinder mouth 2? Since the tool clamper can be engaged with and disengaged from the cam member attached to the cylinder, the tool clamper can be freely opened and closed by moving the rod of the cam cylinder back and forth.

(Embodiment) Next, a preferred embodiment of the present invention will be described in detail with reference to the attached FIGS. 1 to 13.

Figures 1 and 2 are machine tools (100
) and tool changer (1).
A left/right phantom table j+o3) can be moved in the left/right direction (X direction) on a guide table (102) provided at 111) by an unillustrated Collar (1
Moe with 05)? The multi-rotation table (104) can be moved 8 times in the front and rear directions (two directions) by a two-axis motor (+07). Furthermore, a lifting table (1) is provided in front of the column (105) and holds tools
06) is Y! Column by Ichimo Motor 108) (
105) in the vertical direction (Y direction). Therefore, the tool (T) held horizontally on the lifting table (106): the machine tool (100), in the direction of the X, '/, Z glaze direction toward the O workpiece (not shown) disposed in front of the machine tool (100). A horizontal ring hole will be machined on the π2 workpiece.

E-off table (105)? Akira J ``1! This tool CT) spin toremotor 118) for fixed rotation, kite block moving cylinder (109), guide bar retainer N
The transport vibrator (110), (1i0), etc. are attached to the front side of the lifting table (!06).
), a tool guide member (TG) that guides and supports the tool (T) to prevent the tool (T) from wobbling, and the tool guide member (
a guide block (114) that holds the tool (TG), the tip of which is fixed to the guide plotter (li4), and a guide block moving cylinder (109) that moves the guide block (114) back and forth with respect to the tool (T); A cylinder rod (109a) is attached. Further, on the front side of the lifting table (106), the guide block (
114) The clamp release device (i15) releases the clamp of the tool guide member (TG), and its tip is fixed to the kite block (114), and the elevating table (
108) Two wooden guide bars (116) that penetrate through the inside and guide the back and forth movement of the guide block (114), (
116) etc. are installed. In addition, the guide bar (1i
6), (116) are the guide holding members (117), (117) attached to the lifting table (+06).
), and the kite bar protection pipe (I
IG), jllO).

Next, the tool changing device will be explained.

The tool changer M (1) is disposed on the left side of the machine tool (100) in the X direction, and is a device for exchanging a tool (T) etc. attached to the machine tool (100) with another tool, as shown in Fig. 1. As shown in FIG. 1, a slide base (2) is fixed to a base (101) and has rails (2a), (2a) oriented in the Z direction on the stepped upper part thereof, and a rail (2a), which runs on the slide base (2). A slide table (2a) that can be freely swung in the Z direction by a slide cylinder (4)
3), a main body case (5) fixed on the slide table (3), and 1. An index motor (8), a decelerator (A), an index unit (6), and a tool magazine unit (30) supported by the main body case (5).
It is composed of etc. Their installation is clearly shown in FIG.

As shown in FIG. 4, the rotation of the index motor (8) is transmitted to the index unit (6) via a reducer (7).
The index unit (6) rotates the drive shaft (9) protruding into the main body case (5) by a predetermined angle, that is, 60 degrees. Inside the main body case (5) is a driven shaft, one end of which is connected to the drive shaft (9) via a coupling (lO), and the other end of which is connected to a first bevel gear (15) that changes the direction of rotation by 90 degrees. (ili is arranged, and the center part of the driven shaft (11) is a ball bearing (12).
), (12) are supported by the rotating member (13). The rotating member (13) is rotatably supported by the main body case (5) via a swing arm support bearing (14), and on the - side of the rotating member (13) protruding from the main body case (5). A swing arm (20) having an inverted quotient is fixed above.

The swing arm (20) has an arm portion (2
0a) and a bent part (20b) that is orthogonal to the arm part (20a) and protrudes toward the front of the device to support the tool magazine unit (30).
a) Hall bearing (i9), (1!])
The pivot shaft (16) is supported vertically via the bending part (2
0b), a rotating shaft (21) is supported horizontally in the front and rear directions via seven rings (23), . . . A second bevel gear (17) is fixed to the lower end of the rotation shaft (16), and this second bevel gear (17) and the driven shaft (11)
The first bevel shafts (15) of the rotating shafts (15) are orthogonally engaged with each other, and a third bevel gear (18) is also fixed to the upper end of the turning shaft (16). ! The fourth fixed to the middle part of (21)
It meshes orthogonally with the bevel gear (22). Said first
, second, third, and fourth bevel gears (15), (17)
, (18), and (22) are all the same, so the driven shaft (11) rotates! dl (16), rotation axis (21
) are all the same, and the second . 3rd bevel gear (
17) and (18) are fixed to the same pivot shaft (16), the driven shaft (11) and rotating shaft (21) also rotate in the same direction.

Further, as shown in FIG. 5, a swing cylinder (24) is swingably supported on the slide table (3), and the tip of the cylinder rod (24, a) is attached to the bracket (20C>) of the swing arm (20). The swing arm (29) is pivoted to the tool (T) of the machine tool (100).
) in the direction of a predetermined angle (sudden movement is possible. In this case, the swing 7-arm (20) is one turn ↑',! (i 3 )
At the same time, the swing arm pivots relative to the main body case (5) via the swing arm fulcrum bearing (14), and the pivot shaft (16), rotation shaft (21), tool magazine unit (30), etc. also pivot together. . In addition, (25) in Fig. 4 is an index detection sensor, which consists of six index detection bars attached at equal intervals around the outer circumference of the coupling (10).
(26),... by the tool magazine unit (30)
A predetermined tool clamper (33) is positioned and detected at a predetermined position on the machine tool (100) side. Also (27
) is the swing arm angle detection sensor.

Next, the tool magazine unit (30) will be explained.

The tool magazine unit (30) has a magazine plate (3
1) and six tool clampers (33) attached to the outer periphery of the magazine plate (31).
A tool that grips and moves a tool unit (32a) attached to a machine tool (100) using an empty tool clamper (33a) that does not have a replacement tool unit (32), and also grips a necessary tool unit (32b). Clampa (
33b) toward the machine tool [(100), and this tool unit (+2b) is to be attached to the machine tool (100). The tool unit (32) is the first
As shown in Figure 2, a tool holder (
TH) and a tool guide member (TG) that fits into this tool holder (TH) by sliding movement of the guide block (114).
It consists of.

The magazine plate (31) is attached to the swing arm (20).
) is attached to the tip of the rotating shaft (21) that protrudes from the extending part (20b), and has six chevron-shaped protrusions formed on its outer periphery, and has a star shape as a whole. Along one side of the shape, six tool clampers (33a), . . . are fixed at equal intervals in the same direction with respect to the circumferential direction.

The tool clamper (33) is as shown in FIGS. 7 and 8, and includes a clamper body (34), a moving rod (4
0), left and right grippers (45), (45), cam links (49), etc. Clamper body (34
) has magazine plates (31
), and the inside thereof has blind holes (35) on the top and bottom, and the lower part of the clamper body (34) has a horizontal groove (36) that connects the front and rear surfaces (34a).
4b) and (34c), and the lower end of each has a large arc and a small arc in the circumferential direction, and a tool clamp reference seat (37), (3B) with a projecting cross section.
) is provided. In addition, there are 4 small arc-shaped tool clamp bases (38
) protrudes slightly downward from the tool clamp reference seat (37) on the front part (34b), and the front and rear parts (34b)
, (34C) both have grippers on the left and right (45),
(45) A support receiving part (34d), .

(39) is formed.

A coil spring (41) is attached to the blind hole (35) of the clamper body (34), and an eight-shift rod (40)
is inserted into the lower horizontal groove (36), and the upper end of the coil spring (41) is connected to the collar (40) of the moving rod (40).
a) to elastically bias the moving rod (40) upward. The lower end of the 8th shift rod (40) is fixed to a U-shaped holder (42), and the fulcrum pin (43) installed and fixed to the holder (42) has gripper links (4
4).

(44) is pivotally supported, and both outer ends thereof slightly protrude left and right from the clamper body (34).

Pin portions (44a), (44a) at both outer ends of the gripper links (44), (44), and respective receiving portions (34d) on the front and rear surface portions (34b), (34C) of the clamper body (34). , ... support pin fixed between (
46), (46) has two grippers (45)
, (45) are rotatably supported at their upper ends and middle parts and are mounted in parallel so as to face each other. The lower part of the gripper (45) that extends downward from the clamper body (34) is a wide part (45a) that extends back and forth, and the lower end of the wide part (45a) has a tool clamper reference point for the clamper body (34). Abacus bead-shaped presser pieces (47a) and (47b) are located opposite the seats <37) and (3B).
) is rotatably supported. The holding piece (47) is supported by projecting slightly inward from the tool clamper (37) than the gripper (45), and is supported by the left and right grippers (45), (
45) presser foot pieces (47a), (47b),...
· and the tool clamper reference seats (37) and (38) can support and grip two concentric cylindrical objects with different diameters, that is, the tool unit (32) at three points each.

A support arm (34e) to which a fulcrum pin (48) is fixed extends obliquely upward on the upper rear side of the clamper body (3, 4), and a cam link (49) is attached to this fulcrum pin (48).
) is pivoted at the center. The cam link (49) has a generally carved shape, and the movable rod (4
A pin (40b) fixed to the upper end of
(50) is pivoted.

Here, the action of the tool clamper (37) will be described.
When the upwardly extending portion (49b) of the cam link (49) tilts to the left in FIG.
) is moved against the elastic force of the spring (41) by the moving rod (
40) is pressed downward. The moving rod (40)
As the fulcrum pin (43) descends, the gripper link (44) and the bottle part (44a) at the outer end of the gripper link (44) descend.
.

(44a) rotates upward around the fulcrum pin (43), so the grippers (45) and (49) move around the support pin (46).
), rotate around (46) and gripper (45)
, (45) Lower wide part (45a) , (45a)
will open outward as shown in Figure 9. In this state, the 8th
After pressing the tool clamp reference seats (37) and (38) against the small diameter groove (TH-1) of the tool holder (TH) and the large diameter groove (TG-1) of the tool guide member (TG) as shown in the figure,
The force acting on the upwardly extending portion (49b) of the cam link (49) is released, the movable rod (40) is lowered by the elastic force of the coil spring (41), and the grippers (45), (4
5) The wide portions (45a) and (45a) are closed inward. And the presser piece (47a).

(47b), ... are the large and small diameter grooves (TH-1), (TG-) of the tool holder (TH) and tool guide member (TG).
1) to integrally grip a tool unit (32) consisting of a tool holder (TH), a tool guide member (TG), etc.

Next, a mechanism for opening and closing the tool clamper (33) by swinging the swing arm (20) will be described.

As shown in FIG. 9, the tool clamper (33) has its mounting parts (34a), (34a) fixed to the magazine plate (31) with bolts, and
The cam link (49) and support arm (34e) are connected to the swing arm (20) at the rear of the device through the hole (31a) of 31).
It protrudes toward the bent portion (20b). Cam link (4
The upwardly extending portion (49b) of 9) is bent toward the rotating shaft (21), and its roller (50) is disposed facing in the circumferential direction of the rotating shaft (21).

On the other hand, a cam cylinder (60) is fixed to the upper part of the bending part (20b) of the swing arm (20) along the rotation axis (21) as shown in FIGS. 10 and 11, and its rod (
80a) A cam member (61) having a cam surface (62) formed on the magazine plate (31) side is fixed to the tip. In addition, a stopper cylinder (63) is fixed to the lower part of the bending part (20b) of the swing arm (20), and the stopper hole (31b) provided on the side of the tool clamper (33), . . . of the magazine plate (31) ,... are engaged with the rod (63a) to position the magazine plate (31) on the swing arm (20).

Here, the swinging of the swing arm (20) by the swing cylinder (24) and the positional relationship and opening/closing operation of the tool clamper (33) will be explained.

Index motor (8), index unit (6)
) etc. to rotate the magazine plate (31) and use an empty tool clamper (:]3 that does not hold the tool unit (32)
a) is positioned in the direction of the installation tool (T) of the machine tool (ioo), and the index motor (8) is braked to brake the rotation of the drive shaft (3) and driven shaft (11). After that, the rod (24a) of the swing cylinder (24) is advanced, the swing arm (20) and the tool magazine unit (30) are swung toward the machine tool (100), and the empty tool clamper (33a) is moved toward the machine tool. (100) Advance toward the installation tool (T). In this case, the installation tool (T) of the work tlta (too) of the empty tool clamper (33a)
) does not change due to the swinging of the swing arm (20), and the tool clamper (33a
) to the machine tool (100) can be freely selected, and the tool clamper (33a) can move its gripper (45) by swinging the swing arm (20).
, (,15) is opened.

First, the point that the direction of the empty tool clamper (33a) does not change will be explained with reference to FIGS. 4 to 6. The swing 1tb (16) in the swing arm (20) is
Since the swing arm (20) rotates in the same manner as the swing arm (20), the swing arm (20) rotates by the rotation angle θ from the standby position (1) in Fig. 5 to the sixth blade replacement position (m). When the rotating shaft (16) rotates in the direction, the rotating shaft (16) also
1) It will revolve in a clockwise direction by an angle (θ). In this case, the rotation of the driven shaft (11) is regulated and the first
, the second bevel gears (15), and (17) have the same number of teeth, the rotation shaft (16) also rotates by an angle (θ) in the direction of the arrow as shown in FIG. 6 as it revolves. and the second pivot shaft (16). Third bevel gear (17),
(18) and the fourth bevel gear (22) of the rotating shaft (21)
Since the number of teeth is the same, rotation @ (21) rotates the magazine plate (31) counterclockwise in FIG. Since the magazine plate (31) is rotated clockwise by the rotation angle θ in Fig. 6, the magazine plate (31) does not appear to rotate upward, and therefore, for example, the empty tool clamper (33a) does not rotate and remains in the same orientation as shown in Fig. 5. The installation tool (T) of the machine tool (100) as shown in the rotation locus (P) of
Move from almost sideways to parallel to the tool unit (
32).

Next, work the tool clamper (33) 1'1t4 (too)
We will discuss the point that the rotation locus toward can be freely selected. A predetermined tool clamper (33a) is attached to the machine tool (1
When moving the machine tool toward the tool mounting part (00), if there is an obstacle near the tool mounting part, the tool clamper (33a) cannot be moved toward the machine tool [(10,0), The first to fourth bevel gears (15), (17)
.

(1) If the ratio of the number of teeth in (1) and (22) is appropriately selected, rotation trajectories such as (Q) and (R) can be selected in addition to (P) in Fig. 5. are the first to fourth bevel gears (15), (17), (18), (
This can be achieved by changing the rotation angle of the magazine plate (31) accompanying the swinging of the swing arm (20) by changing the ratio of the number of teeth 22).

In other words, in the case of the rotation trajectory (Q), the rotation angle (θ) of the magazine plate (31) is changed due to the swing of the swing arm (20).
Insert the magazine plate (31) in the opposite direction at a slightly smaller angle than
) is rotated, for example, if the first and second bevel gears (15) and (17) have the same g:I number, the third
This is a case where the number of teeth of the fourth bevel gear (22) is greater than the number of teeth of the bevel gear (18), and the number of teeth of the third and fourth bevel gears (18) is
) and (22) have the same number of teeth, the first umbrella float (1
This is a case where the number of teeth of the second bevel gear (17) is greater than the number of teeth in 5). In addition, in the case of the rotation trajectory (R), the magazine plate (31) is rotated in the opposite direction at an angle slightly larger than the rotation angle (θ) of the magazine plate (31) due to the swinging of the swing arm (20). Yes, the ratio of the number of teeth of the bevel gear is opposite to that of the rotation trajectory (Q), that is, for example, when the first and second bevel gears (15) and (17) have the same number of teeth, the ratio of the number of teeth of the bevel gear is the same as that of the fourth bevel gear ( For example, the number of teeth of the third bevel gear (18) may be greater than the number of teeth of the third bevel gear (18). In addition, the first to fourth bevel gears (15) for both the rotation loci (Q) and (R).

(17) It is not necessary that the meshing gears in (4a) and (22) have the same number of teeth, but bevel gears (15) should be used to achieve the above-mentioned effects.
, (17), (18), and (22).

The gripper (45) of the empty tool clamper (33a) moves as the swing arm (20) swings.

The point of opening (45) will be explained. As mentioned above, as the swing arm (20) swings clockwise, the magazine plate (31) rotates counterclockwise around rotation 1IIt (21) by an angle θ, so that the magazine plate (31) and the swing arm ( 20) is rotated by an angle θ. Therefore, as shown in Fig. 10, before the swing arm (20) turns, the empty tool clamper (33
The position of the roller (50) of the cam link (49) in a) and the position of the cam member (61) of the cam cylinder (60) fixed to the bending part (20b) of the swing arm (20) are determined by the rotation axis (21). If the cam member (61) of the cam cylinder (60) and the air space are spaced apart from the center by an angle θ and equidistant from the center of the rotating shaft (21), the cam member (61) of the cam cylinder (60) will The roller (50) of the tool clamper (33a) overlaps with the roller (50) of the tool clamper (33a).

If the rond (60a) of the cam cylinder (60) is made to protrude toward the magazine plate (31), the cam member (61) can be attached to the cam link (
19) to swing the cam link (49), the moving rod (40)! , f is suppressed and its gripper (
45) and (45) are opened as shown in Fig. 9, and as the swing arm (20) swings, the empty tool clamper (33a) is opened and the tool unit (32a) of the machine tool (100) is opened. It will be sandwiched. After this, when the rod (60a) of the cam cylinder (60) is pulled rearward to release the engagement between the cam member (61) and the tool clamper (33a), the tool clamper (33a) is closed as shown in FIG. Tool clamp reference seats (37), (38) and gripper (45) of the tool clamper (33),
The presser piece (47) of (45) is the tool holder (TH)
and the respective large and small diameter grooves (T) of the tool guide member (TG).
G-1).

(TH-1) and grips the tool unit (32a). Therefore, before the swing arm (20) is tilted toward the machine tool (100), the machine tool (100)
Index motor (8) and index unit (6 ). Although the empty tool clamper (33a) was used to explain the three functions and effects of the tool clamper (33) above, there is no need to stick to this. Of course you can.

Next, the overall operation of the device will be explained.

As shown in FIG. 1, a tool guide member (TG) held by a guide block (114) is brought into contact with a workpiece (not shown), and a tool (T) is inserted into the workpiece through a hole in the tool guide member (TG). When machining for deep holes is completed and the tool is to be replaced, the column (105) is moved backward to a predetermined position, and the guide block (114) is moved to the column (109) by the guide plotter 8 cylinder (109).
105) side. Figure 12 shows the guide block (+14) completely retracted toward the column (105), indicating a deaf state, and the lifting table (106) has a main shaft rotatably driven by a spindle motor (108). 'th (120) is rotatably supported, and the conical tapered shank part (TH-2') of the tool holder (TH) that holds the tool (T) is crimped and engaged with the front part of the tool holder (TH). There is.

Rear cylinder part (TG-2) of the tool guide member (TG)
fits into the head (TH-3) of the tool holder (TH),
Tool (T), tool holder (TH), tool guide member (T
G) together constitute a tool unit (32a). And tool guide member (TG) and tool holder (
TH) has large and small diameter grooves (
TG-1).

(TH-1) is formed.

Further, as shown in FIG. 13, the tool guide member (TG) engages its engagement protrusion (TG-3) with the engagement hole (114a) of the guide plotter (114), and then the toggle device (122)
), but as shown in FIG.
a) slot (115b) and guide block (114)
The bottle part (
122a), the pressing arm (122b) of the toggle device (122) is engaged by the rod (115a).
Guide plotter (11) of opening tool guide member (TG)
4) Repression will be lifted. And a lifting table (10
6) is lowered to a predetermined position, and the column (105
) moves a predetermined distance towards the tool changer (1).

On the other hand, the tool magazine unit (30
) is attached to the slide base (2) by the slide ring (・I) so that it can be positioned at the center of the tool holder (TH) and tool guide member (T-G) of the tool clamper (33) or machine tool (100). An empty tool clamper (33a) without a tool unit (32) is moved by the index motor (8) and index unit (6).
As shown in Fig. 5, the tool unit (3) of the machine tool (100)
2a) Decide on purchasing positions. Thereafter, the swing arm (20) is swung toward the machine tool (1'oO) by the swing cylinder (24), and the empty tool clamper (33a) is moved to the tool holder (TH) and the tool guide member ( TG> dog, sulcus minor (TG-1).

(TH-1) is engaged and held. Then the drawbar (1
21) is advanced to move the tool holder (TH) to the front of the device, and at the same time, the loft of the slide cylinder (4) is advanced to move the tool unit f32a) of the work Fl relative (+00).
The tool clamper (33a) that holds the tool holder (TH) is moved forward and the taper shank part (TH-2
) is sufficiently removed from the main shaft (120), the rod (24a) of the swing cylinder (24) is pulled in and the swing arm (20) is swung in the opposite direction from the machine tool (100).

Here, the tool unit (32b) having the tools (,T) necessary for the machine tool (100) is connected to the index motor (8).
), etc., and rotate the swing arm (20) to a predetermined position on the machine tool (100). The main axis of (
120) to a position where their axes coincide. In this case, since the rod (60a) of the cam cylinder (60) is retracted rearward, the cam member (61) and the cam link (49) do not engage, and the tool clamper (33b) holds the tool unit (32b). It remains in its grip. After that, the tool clamper (
33b) of the tool holder (TH) held by the main body of the machine tool (100)
When press-fitted into the tapered hole of 20), the cam member (61) and tool clamper (33) are moved by the cam cylinder (60).
Engage the cam link (49) of b) to release the tool clamper (
33b), swing the swing arm (20) away from the machine tool (100) again, and use the toggle device (122) to fix the tool guide member (TG3) to the guide block (114) to replace the tool. The work is finished.

(Effect of the invention) The magazine unit and the swing arm are rotated relative to each other as the swing arm swings, and this relative rotation causes the cam member of the cam cylinder attached to the swing arm and the cam link of a predetermined tool clamper to be connected. Therefore, the predetermined tool clamper, which swings toward the machine tool and moves eight times, can be opened and closed only by moving the rod of the cam cylinder back and forth.

Therefore, a tool clamper that can open and close a specified tool clamper with a simple device that simply attaches a cam cylinder with a cam member to the swing arm, and has a function to always close the tool clamper to grip the tool, does not have a tool. By swinging the empty tool clamper toward the machine tool, it can be opened in a timely manner just before the tool is installed on the machine tool.

[Brief explanation of the drawing]

Figure 1 is a perspective view of the machine tool and tool changer, Figure 2 is a front view of Figure 1, Figure 3 is a perspective view of the tool changer, and Figure 4 is a perspective view of the tool changer.
5 is a partial sectional front view of the tool magazine unit in the standby position, FIG. 6 is a partial sectional front view of the tool magazine unit in the exchange position, and FIG. 7 is a partial sectional front view of the tool magazine unit in the exchange position. 8 is a front view of the tool clamper gripping the tool unit, and FIG. 9 is a cross-sectional side view of the tool clamper gripping the tool unit.
The figure shows how the tool clamper is installed, Figure 10 is a front view showing how the cam cylinder is installed, Figure 11 is a partial side view of Figure 10, and Figure 12 is how tool units, etc. are installed in the machine tool. FIG. 13 is a diagram showing how the tool guide member is attached to the guide plotter. In the figure, (20) is a swing arm, (24) is a swing cylinder, (30) is a tool magazine unit, and (3) is a swing arm.
3) is the tool clamper, (49) is the cam link, (SO)
is the cam cylinder, (Boa) is the rod, (6L
) is a cam member, and (T) is a tool. Patent applicant: Honda Motor Co., Ltd. Agent
Person Patent Attorney 2) Patent Attorney Kuni Ohashi, Patent Attorney Otoma
Yuki Koyama Patent Attorney Field 1
) Shigeru Figure 6 Figure 7 Figure 8 G;

Claims (1)

[Claims] Disposed on the side of a machine tool where tools are exchanged,
A swing arm rotatably supports a tool magazine unit at its tip and is swingable by a swing drive source, and a plurality of swing arms are attached in the circumferential direction of the tool magazine unit and are opened and closed by the swinging of the cam link. a tool clamper for tool exchange; a rotation mechanism that is attached to the swing arm and causes relative rotation between the tool magazine unit and the swing arm as the swing arm swings; a cam cylinder that is attached to the rod tip of the cam cylinder and moves its rod tip forward and backward toward the tool magazine unit; A tool clamper opening/closing device for an automatic tool changer, comprising a cam member that engages with and disengages from a cam link of a predetermined tool clamper of a unit, and swings the cam link to open and close the tool clamper.