JPS6362646A - Automatic stylus replacing device for copying machine tool - Google Patents

Abstract

PURPOSE:To shorten the replacing time of stylus and to simplify the structure, by constructing such that a stylus magazine moves from a retracting position to a stylus transferring position close to a tracer shaft of a tracer head when the stylus is replaced. CONSTITUTION:A stylus magazine 40 is not mounted onto a table of a machine tool but held on a magazine supporting table 60 fixed to a tracer head supporting table. Since there is no obstacle in an arranging work process for fixing a copying model onto the table, a worker can approach easily to the copying model or a work thereby the work is facilitated. A lifting/lowering means for a tracer head 32 a lateral moving means of the stylus magazine 40 are provided so as to determine the stylus replacing position of the stylus magazine 40 directly by means of the tracer head 32 and replace the stylus, thus shortening the automatic replacing cycle time of the stylus 34. Since fewer actuators are required for replacement of stylus, the structure is simplified.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to an automatic stylus exchange device for a copying machine tool, and the present invention relates to an improved copying machine tool that improves the speed of automatic stylus exchange and simplifies the structure. This invention relates to an automatic stylus changing device for machines.

[Prior art]

Automatic stylus changing devices for copying machine tools have already been proposed in many papers; for example, two types of automatic stylus changing devices are proposed by the present applicant in Japanese Patent Publication No. 60-59109. That is, in one of the two systems, an automatic stylus exchange device for a copying machine tool, a stylus storage device is provided in a fixed position on the table of the machine tool, and the spindle head of the machine tool and the tracer head support are integrated. The tracer head is approached and positioned above the stylus storage device by relative movement in the x, y, and z directions with respect to the table, and the tracer head is moved between the tracer head's tracer axis and the stylus storage device. Automatic exchange to the desired stylus is performed. This type of automatic stylus exchange device has the advantage of being able to move the tracer head toward and away from the stylus storage device by using the feed mechanism in the X, Y, and Z three-axis directions on the table or spindle head of the machine tool. When placing the copying model on the table, the stylus storage device fixedly placed on the table will not be an obstacle, and the movement stroke of the table will be
A disadvantage is that a stroke length is required which is longer than the required distance dimension for machining purposes in order to allow the tracer head to reach the stylus storage device provided at the end of the table. Moreover, each time the stylus is automatically replaced, X, Y,
Since machining operations are required in the three Z-axis directions, there is a disadvantage that it takes a relatively long time to interrupt the machining operation, complete the stylus exchange, and start the machining operation again. There is also the disadvantage that the position of the tracer head relative to the stylus storage device at the moment of interruption is not necessarily constant, so that the commands for carrying out the movement positioning onto the stylus storage device must be changed each time.

In contrast to the former type of automatic stylus exchange device for copying machine tools described above, the other type of automatic stylus exchange device has a stylus magazine fixed to the end of a tracer arm for supporting the tracer head, and the tracer head and stylus magazine A changer arm for changing the stylus, similar to the changing arm used in automatic tool changers for well-known machine tools, is installed between the changer arm and the changer arm, and the stylus can be changed using the vertical movement and rotation of the changer arm. A configuration has been adopted to achieve this. Although the stylus magazine is not on the table of the machine tool, this configuration is impossible due to design considerations due to the space required to incorporate both the stylus magazine and changer arm into the tip of the tracer arm that supports the tracer head. In addition, the changer arm has various functions such as unlocking the tracer of the tracer head, rotating to change the stylus, and returning to the standby position that does not interfere with machining. However, there are disadvantages such as the need for a large number of actuators, and the disadvantage that the structure is relatively complex.

[Problems to be solved]

Therefore, the above-mentioned automatic stylus exchange device for copying machine tools has various drawbacks that should be improved in terms of function and structure, so the present invention eliminates the structure in which the stylus magazine is placed on the table. It improves the installation of the copying model and the operator's access to the model, reduces the time required to change the stylus, and also simplifies the mechanical structure and makes appropriate use of space. It is an object of the present invention to provide an automatic stylus changing device for copying machine tools that is improved in terms of drawing, function, and structure.

[Solution]

In view of the above-mentioned object of the invention, the present invention provides an automatic stylus exchange device for a copying machine tool that automatically replaces a stylus attached to a tracer shaft of a tracer head of a copying machine tool in response to a replacement command. A tracer head lifting/lowering operation means for raising and lowering the tracer head on a support table, and a tracer head lifting means that allows the tracer head support table to be moved up and down, and a plurality of styli to be stored in a constant posture, and a desired stylus can be indexed to a stylus exchange position. a stylus magazine provided in each stylus for removably mounting the stylus on the tracer shaft of the tracer head; a magazine moving means that causes the stylus to be moved between a stylus transfer position and a stylus exchange command; Provided is an automatic stylus exchange device for a copying machine tool, characterized in that it is configured with an attachment/detachment operation means for setting a stylus attachment means in a clamped state or an unclamped state,
According to this, when replacing the stylus, the stylus magazine can move from the retracted position to the stylus transfer position closest to the tracer axis of the tracer head to prepare for the stylus replacement, so the tracer head, spindle head on the machine tool side, table, etc. There is no need for the stylus to move three-dimensionally toward the stylus magazine solely for the purpose of stylus exchange, and stylus exchange is accomplished without the need for a changer arm. Hereinafter, the present invention will be described in detail based on embodiments shown in the accompanying drawings.

〔Example〕

FIG. 1 is a sectional view showing the main structural parts of an embodiment of an automatic stylus changing device for a copying machine tool according to the present invention, and FIG. 2 is a sectional view of a copying machine tool equipped with this automatic stylus changing device. The front view of Figure 3 is the arrow direction of Figure 2 -
■A sectional view showing the structure of the tracer head as seen from the direction, Fig. 4 is a sectional view taken along the line IV-IV in Fig. 1, Fig. 5 is a sectional view showing the structure of the stylus attachment means, and Fig. 6 is stylus replacement. This is a diagram explaining the action of the gastrointestinal tract.

First, referring to FIG. 2, there is shown the overall structure of a copying machine tool equipped with an automatic stylus changer according to the present invention. This copying machine tool is capable of linear movement on a bed 10 fixed on the floor using a guide 12 in the Y-axis direction perpendicular to the plane of the paper in FIG. A table 16 is provided on this frame 14 and is movable in a straight line in the X-axis direction (direction perpendicular to the plane of FIG. 2) perpendicular to the Y-axis direction. . In addition, a column 18 is fixedly erected on the back side of the ped 10.
A spindle head 20 is provided on the column 18 so as to be linearly movable over a guide surface formed on the column 18 in the Z-axis direction perpendicular to the upper surface of the table 16. This spindle head 20 has a tool spindle 22 to which a tool T is mounted, and performs machining on a workpiece WK on a table 16. The Y-axis motor My serves as a driving source for driving the linear movement of the saddle 14, table 16, and spindle head 20, respectively.

An X-axis motor Mx and a Z-axis motor M2 are provided.

A tool magazine 24 in a well-known automatic tool changer is rotatably mounted on the column 18 on its center axis, and a plurality of tools T can be freely attached to and detached from the tool magazine 24 via tool sockets. It is stored in. For automatic tool exchange, a desired tool T in the tool magazine 24 is indexed to a tool exchange position Ta indicated by a chain line, and the tool T indexed to this tool exchange position Ta is moved to the tool spindle 2.
The tool T mounted on the tool T and the tool exchange arm 26 are automatically exchanged with each other. 28 tool spindle 2
This is a handle for manually displacing 2 up and down.

On the other hand, in the copying machine tool, an arm-shaped tracer head support stand 30 is provided that extends laterally from the column 18, and a tracer spatula r32 is movable up and down on this tracer head support stand 30. A stylus 34 is detachably attached to the lower end of the tracer head 32. The vertical movement of the tracer spatula r32 is driven by a vertical motor MT, and as described later, the tracer head itself is held at the lower end of a tracer head moving table 36, and the tracer head mobile table 36 moves according to the operation of the vertical motor MT. The tracer head 32 moves up and down with respect to the tracer head support 30, and the tracer head 32 moves up and down together with it. In addition, the tracer head support 30 is provided with a stylus magazine support at position h, which is not shown in FIG. 2, either separately or integrally. 40 is provided for storing a plurality of replacement styli and for performing stylus exchange with tracer head 932.

In addition to the mechanical configuration described above, the copying machine tool is equipped with a copying control section 100, a stylus exchange control section 102, etc. as electrical control means, and the former copying control section 100 is installed on the table 16. When the stylus 34 of the tracer head 32 is displaced while tracing the tracing model M, the stylus 34 of the tracer head 32 receives the displacement signal from the tracer head 32 and controls the operation of the actuators Mx, MY, and M2 in the x, y, and z axes, respectively; It will be discussed that it is provided as a control function unit for copying and machining the workpiece W to have the same dimensions or similar dimensions as the copy h model M. On the other hand, when the stylus exchange control section 102 receives a command signal from the above-mentioned copying control section 100 indicating that the stylus 34 needs to be replaced during the copying process, the stylus exchange control section 102 operates the motor MT for raising and lowering the tracer head 32 to move the stylus magazine. The stylus 34 is automatically exchanged with respect to the tracer axis of the tracer spatula r32 by sending a control signal associated with stylus exchange to the tracer spatula r32.

Here, referring to FIG. 3, there is shown a detailed configuration example of the elevating and lowering mechanism for the tracer head 32 held on the tracer head support base 30 shown in FIG. 1. The tracer head support stand 3o has a bracket 42 on the front surface of the jaw part 30a, and the above-mentioned tracer head moving table 36 is attached to this bracket 42 so that it can move up and down in the upward and downward directions. I'm getting beaten up. The tracer head moving table 36 has a tracer spatula 32 fixed at its lowermost end by an appropriate fixing means, and a tracer shaft 33 for attaching a stylus 34 (FIG. 2) to the tip of the tracer head 32. Further, the tracer head moving table 36 is constructed as a hollow structure as shown in the figure, and a nut 48 is fixed to a seat 46 provided above the inside thereof. A feed screw 50 having a predetermined length in the axial direction of the tracer head moving table 36 is screwed into the bracket 42, and the upper end of the feed screw 50 is provided at the upper end of the bracket 42.

The Zori 5
6a and h. 52m is cover. Also,
The Zori 562L is connected to the tracer via the belt 58.
The belt pulley mechanism A is connected to another googly 56b attached to the output shaft end of the lifting motor MT of No. 32, and transmits the rotational output of the lifting motor MT to the feed screw 50.

The feed screw 50 and the nut 48 constitute a feed screw mechanism for raising and lowering the tracer head moving table 36 and the tracer spatula P32. In addition, as a lifting motor MT,
Sir? Using a motor, the operating amount of the feed screw mechanism can be appropriately controlled as desired in accordance with a control signal. In addition, FIG. 3 shows a stylus magazine 40.
A portion of the magazine support stand 60 that supports the magazine is shown.

Next, referring to FIGS. 1 and 4, FIG. 1 shows the main structure of an embodiment of the automatic stylus exchange device according to the present invention, including a partial cross-sectional view, and the tracer head 3 shown in FIG.
A magazine support 60 is provided on the tracer head support 30 that holds the magazine 2, and is provided integrally or with a separate mounting structure. A bracket 62 is formed at the lower part of the magazine support stand 60, and a lateral guide surface 64 is also formed therein. The guide surface 64 is formed as a gear r for moving the slide base 66, which is a component of the stylus magazine 40, toward the tracer head 32 and retracting it in the opposite direction. 62 is provided with an anti-mount 5. for driving the approach movement and retraction movement of the slide base 66.
The outer end of a piston rod 70 of a fluid cylinder 68 provided as a dual cylinder is coupled, and the outer end of a cylinder body 68a of the fluid cylinder 68 is pivotally coupled to a bracket 66a projecting downward from the slide base 66 by means of a pin coupling. Let's go. In other words, when the cylinder body 68a reciprocates with respect to the piston rod 70 of the fluid cylinder 68 according to the supply of pressure fluid, the slide base 66 moves on the guide surface 64 and approaches the tracer spatula P32 at a distance of #, or may separate from the tracer head 32. FIG. 1 shows the slide base 66 in a retracted position.

The slide base 66 has a column 72 extending downward,
A magazine base 74 is provided at the lower end of this column 72. The slide base 66, the column 72, and the magazine base 74 may be formed as an integral structural element (the magazine base 74 is formed with an annular boss portion 76).
A magazine plate 8 is attached to the outer periphery of this boss portion 76 via a bearing 78.
0 is mounted so as to be pivotable about the bearing 78. In this magazine plate 80, a plurality of storage holes 82 for storing and holding the styli 34 of multiple books are formed at approximately equal intervals in the circumferential direction. In addition, the magazine plate 80
An internal gear 84 is carved on the inner periphery of the central large-diameter hole, and a pinion 86 is meshed with this internal gear 84. This pinion 86 is directly connected to an indexing motor 881C mounted on the magazine base 74, and rotates the magazine plate 80 through the engagement between the pinion 86 and the internal gear 84 in accordance with the rotational drive of the indexing motor 88. It can be rotated over a desired rotation angle. And magazine plate 8
0 rotation, a desired one of the plurality of styluses 34 held in the plurality of storage holes 82 is moved to a predetermined angular position by the tube, the pick, and the stylus exchange position aligned with the tracer shaft 33 of the tracer head 32 in the magazine radial direction. 5TaK can be calculated. Then, the stylus 34 indexed to the stylus exchange position STa on the magazine plate 80 of the stylus magazine 40 is moved to a position directly below the tracer shaft 33 of the tracer head 32,
4 from the stylus magazine 40 to the tracer shaft 33.
If the stylus is moved by the linear sliding motion of 6, the stylus can be exchanged. Of course, in advance, the empty stylus storage hole 82 in the magazine plate 80 is moved to the stylus exchange position ST.
a, and bring it close to the tracer shaft 33 to reach the above-mentioned stylus transfer position, the tracer head 3
It goes without saying that, for example, the used stylus 34 attached to the tracer shaft 33 of No. 2 can be transferred and returned to the empty stylus storage hole 82. Now, as described above, the stylus magazine 4o and the tracer shaft 33 In order to achieve automatic stylus exchange by transferring the stylus 34 between the tracer @ 33 and the stylus 34, a means for mounting the stylus 34 on the shaft end of the tracer @ 33, and a means for mounting this mounting means in two states: a flange state and an unclamped state. Both means are required, including a means for attaching and detaching the tracer shaft 33 to and from the shaft end of the tracer shaft 33. FIG. 3 shows a cylinder-operated attachment/detachment device 90 provided on the stylus magazine 40 as an embodiment of the latter attachment/detachment means. This attachment/detachment device 90 includes a fluid cylinder 92 whose one end is pivotally attached to the slide base 66, and
A joint member 95 is attached to the tip of the second piston 94, and two link members 96 are attached to this joint member 95.
a.

A bracket 97 connected via a hinge 96b and fixed on the machine base 74 is formed as a multi-link structure lever device such as a lever member 98 pivotally connected by a hebin connection. In this attachment/detachment device 90, the lever member 98 mentioned above comes into contact with a flange portion 34a (described later) provided on the stylus 34 indexed to the stylus exchange position STa of the stylus magazine 40, and a downward pressing blade is applied to the flange portion 34a. When applied, the mounting means, which will be described later, is moved to an unclamped state, and when separated from the contact position with the flange portion 34a, the mounting means is moved to a flange state. Member 96a.

96b expands or contracts, and as a result, the lever member 98 comes into contact with or moves away from the flange portion 34m of the stylus 34.

FIG. 4 is a plan view of the stylus magazine 40 including the above-mentioned attaching/detaching device 90, viewed from the line ■-■ in FIG. The storage structure and the location of the stylus exchange position ST are clearly indicated. It is also clearly shown that each of the stylus storage holes 82 is a notch-shaped hole (erag pot hole) that opens toward the outside in the radial direction of the circular magazine plate 80.

Now, FIG. 5 shows an embodiment of a mounting means that allows the stylus 34 to be detachably mounted on the lower end of the tracer shaft 33 of the tracer head 32. In this embodiment, the tracer shaft is mainly attached to the stylus 34 itself. The mounting device 1i110 is provided as a mounting device 1i110 formed so as to exhibit two states, a flange state and an unclamped state, with respect to the lower end of the holder 33.

This mounting device 110 engages a plurality of flange spheres 112 into a V-shaped groove 135 formed in a tapered conical portion 133 at the lower end of the tracer shaft 33 by a spring biasing force, and engages the flange spheres 12 with the V-shaped groove 135. It is formed as a device for mounting the stylus 34 on the tracer shaft 33 using engagement with the tracer shaft 33.

That is, the mounting device 110 has a hollow cylindrical socket 116 that fixes and holds the stylus 34 by fixing means such as a set screw 114, and the upper part of the socket 116 can receive the lower end of the tracer shaft 33. The inner peripheral wall of the opening is provided with a tracer shaft 3.
The tapered part 11 is formed in a complementary shape so as to be able to tightly engage with the tapered conical part 133 formed at the lower end of the tapered part 11.
8, and a plurality of holes 12 that receive the clamp sphere 112 in a loosely fitted state directly above the locking part 118.
0 and h. This socket 116 is also inserted with a sleeve 2122iC having a hollow cylindrical shape, and conversely, the sleeve 12
2 is formed so that it can be slid upwardly and downwardly around the outer periphery of the socket 1.16. The sleeve 122 has a flange portion 34a relating to the stylus 34 described above on the outer periphery at the lowermost end, and a spherical contact surface 124 facing the hole 120 of the socket 116 on the lower inner periphery. In addition, sleeve 12
2 is formed as an insertion port for the tracer shaft 33, and an annular shoulder 126 protruding inward is formed as a spring seat. Then, this shoulder portion 126 and the socket 1
The tracer shaft 33 inserted from above between the top end of 16
A compression spring 128 is housed so as to surround the. This compression spring 128 is provided to apply a spring biasing force that constantly presses the socket 116 from above to below against the sleeve 122. In the state in which the sleeve 122 is pressed down, the sphere abutting surface 124 of the sleeve 122 is in a state in which the clamp sphere 112 is pressed inward, so that the clamp sphere 112 is formed in the tapered conical portion 133 of the inserted tracer shaft 33. It engages in the V-shaped groove 135 and is in a clamped state.

On the other hand, when the mounting device 110 is in the clamped state, if the sleeve 122 is forcibly moved downward with respect to the socket 116 against the spring biasing force of the compression spring 128, the spherical contact surface of the sleeve 122] 24 is a clamp sphere 112
Dissociate from. As a result, the inward pressing force acting on the clamp sphere 112 is released, and the clamp sphere 112
is free to move within the hole 120 of the socket 116. In this way, the clamp sphere 112 fits into the V-shaped groove 1 of the tracer shaft 33.
35, the mounting device 110 is in an unclamped state. In this case, the means for downwardly displacing the sleeve 22 with respect to the socket 116 is provided in the attachment/detachment device 90 provided on the stylus magazine 40 described above.
When the stylus 34 is fixed in the storage hole 82 of the magazine plate 80 of the stylus magazine 40 by the step 116a of the socket 116 as shown in FIG. Part 9
8 (having a bifurcated shape as shown in FIG. 4), the above-mentioned clamped state can be shifted to the unclamped state.

Further, by pulling back the lever member 98 of the attaching/detaching device 90 from the position shown by the chain line in FIG. 1 to the position shown by the solid line, the clamping state of the mounting device is restored.

In the following explanation beyond the margins, the mechanical aspects of the tracer head four-lowering mechanism, the stylus magazine, the stylus magazine moving device, the stylus mounting device, the stylus attaching and detaching device, etc., which constitute the automatic stylus changing device of the copying machine tool according to the present invention, will be described. Although the structure and operation have been explained, below,
The operation of this automatic stylus exchange device will be explained according to the operation flowchart shown in FIG.

Now, automatic stylus exchange is carried out by changing the stylus 34 attached to the tracer shaft of the tracer head 32 to another stylus 34 while the copying control unit 100 shown in FIG. When it is necessary to exchange the stylus, the stylus exchange control unit 02
It is generally initiated by sending a signal commanding a stylus change to the stylus. Of course, the process can also be started by the operator voluntarily sending a signal to the stylus exchange control unit 102 instructing the stylus exchange fee. In addition, it is also possible to provide an appropriate detection means for detecting that an abnormality has occurred in the stylus 34 in use, and to automatically replace the stylus in response to an abnormality detection signal from the detection means. .

When the stylus exchange control unit 102 receives an automatic stylus exchange command, it generates automatic stylus exchange control signals in a certain order. At this time, first, the copying operation in the copying machine tool is interrupted, but the saddle 14,
The table 16 and spindle head 20 may simply be stopped at their current positions, or automatic tool exchange or other operations may be performed in parallel as required.

The automatic stylus exchange is first started by raising the tracer head 32 from the tracing operation position where it is in contact with the model M to a predetermined stylus exchange standby position. In this stylus exchange standby position, as shown in FIG. The stylus 34 can be returned from the tracer shaft 33 to the empty storage hole 82 of the stylus magazine 40 without interference by increasing the height by an appropriate amount L1 of several millimeters with respect to the upper surface of the storage hole 82. It is something that exists.

Next, the step of indexing the empty stylus storage hole 82 in the stylus magazine 40 to the stylus exchange position sT and advancing the stylus magazine 40 from the retracted position to the stylus transfer position immediately below the tracer head 32 is performed. This is achieved by the actuation of the fluid cylinder 68 already described. When the stylus magazine 40 moves to the stylus transfer position closest to the tracer head 32, the tracer head 32, which is in the stylus exchange standby position, is lowered by an amount equal to the above-described appropriate amount. Due to this downward movement, the stylus 34 attached to the lower end of the tracer shaft 33 is seated in the empty storage hole 82 of the stylus magazine 40. Then, the jaw portion 116a of the socket 116 of the stylus 34 comes into contact with the upper surface of the stylus storage hole 82 of the magazine plate 80. The detachment device 90 is then actuated and the stylus 34
The mounting device 110 of is shifted to an unclamped state.

As a result, first, the stylus 34 attached to the lower end of the tracer shaft 33 becomes ready to be transferred to and returned to the empty storage hole 82 of the stylus magazine 40. Next, in the unclamped state of this mounting device 110, the tracer head 3
2, the stylus 34 moves toward the tracer shaft 33
The return to the stylus magazine 40 is completed. At this time, the attachment/detachment device 90 is pulled up from the flange portion 34a of the stylus 34 returned from the tracer shaft 33 (returns to the solid line position in FIG. 1).

An indexing operation is then performed on the stylus magazine 40 while maintaining the tracer head 32 in the above-described raised position. In other words, the desired stylus 34 all stylus exchange positions ST to be attached to the tracer head 32 next
A step of indexing to a is performed. As already mentioned, this indexing action is driven by the indexing motor 88.

When the fc desired stylus 34 is indexed as described above, the attachment/detachment device 90 is operated again, and the seventh desired stylus 34 is placed in an unclamped state. Next, when the tracer head 32 in the raised position is lowered,
The tip of the tracer shaft 33 is inserted into the stylus 34 mounting device 1]0, which is waiting in an unclamped state. Therefore, when the attachment/detachment device 90 is pulled up at this time, the attachment device 110 returns to the squeezed state, and as a result, the stylus 34 is firmly attached to the lower end of the tracer shaft 33.

Next, when the tracer head 32 is raised again to the stylus exchange standby position, the tracer shaft 33 moves upward with a desired stylus 34 attached to one end thereof, so that the stylus 34 is inserted into the stylus storage hole of the stylus magazine 40. It leaves upwards from 82. When this state is reached, when the stylus magazine 40i is moved backward from the stylus transfer position to the retracted position, the desired stylus 34 is transferred to the storage hole 82 of the stylus magazine 40.
When the stylus 34 is completely injected, one cycle of the automatic exchange operation of the stylus 34 is completely completed. At this time, stylus exchange control 'f! Alo2 sends out a signal indicating the completion of automatic stylus exchange, and at the same time moves the tracer head 32 closer to the copying model M to prepare for restarting the copying process.

The embodiments of the automatic stylus changing device for copying machine tools according to the present invention have been described above.According to the present invention, the following effects can be obtained based on the above-mentioned configuration and operation. .

〔Effect of the invention〕

1. The stylus magazine is not placed on the table of the machine tool, but is held on the magazine support stand attached to the tracer head support stand, which creates an obstacle in the process of setting up the copying model to be attached to the entire table. In addition, the operator can easily access the copying model and the workpiece, making the work easier.

2. A means for raising and lowering the tracer head and a means for moving the stylus magazine in the lateral direction are provided. In the automatic stylus exchange process, only the stylus magazine and the tracer head can perform the mutual approach operation, so that the machine tool side can move x, y,
Since it is no longer necessary to operate the Z-axis feed shaft and use it for stylus exchange, the cycle time required for automatic stylus exchange can be completely shortened compared to the conventional method.

Furthermore, other operations such as automatic tool exchange can be performed in parallel on the machine tool side as desired.

3. Since there is no stylus exchange arm and the tracer spatula r is directly positioned in the stylus magazine to perform stylus exchange, the structure is simplified with fewer actuators for stylus exchange. It is also time saving based.

[Brief explanation of the drawing]

FIG. 1 shows a partial cross-section Qff of an embodiment of an automatic stylus changer for a copying machine tool according to the present invention.
The side view shown in the i-meeting, and Figure 2 are mechanical diagrams showing the overall mechanism of the copying machine tool equipped with the automatic stylus exchange device.
Figure 3 is a side view, including a partial cross section, showing the raising and lowering mechanism of the tracer head as seen from the direction of the arrows ■-■ in Figure 2, and Figure 4 is a cross-section taken along the line ■-■ of the first prisoner. Figure 5 is
FIG. 6 is an enlarged sectional view showing one embodiment of the detailed structure of the stylus mounting device, and FIG. 6 is a flowchart illustrating the entire operation of the automatic stylus exchange device according to the present invention. I6...Table, 20...Spindle head, 22...Tool spindle, 30...Tracer head support stand, 32...
Tracer head, 33... Tracer shaft, 34... Stylus, 40... Stylus magazine, 60...
Magazine support stand, 64... Guide surface, 66... Slide base, 68... Fluid cylinder, 90... Attachment/detaching device, 100... Copying control section, 102... Stylus exchange control section, 110 ...Mounting device, T...Tool, S
Ta: Stylus exchange position, M: Copying model. Q') 7- Figure 5 1N Open'U63-6264 (E(12) 61st

Claims (1)

[Claims] 1. In an automatic stylus exchange device for a copying machine tool that automatically replaces a stylus attached to a tracer shaft of a tracer head of a copying machine tool in response to a replacement command, the tracer head is replaced on a tracer head support base. a stylus magazine which is movably attached to the tracer head support base, stores a plurality of styli in a fixed posture, and can index a desired stylus to a stylus exchange position. a stylus attachment means provided on each stylus for removably attaching the stylus to the tracer shaft of the tracer head; and a stylus transfer means for moving the stylus magazine to a retracted position away from the tracer head and to a stylus transfer position close to the tracer head. magazine moving means for moving the stylus to and from the stylus exchange command in response to a stylus exchange command, and clamping the stylus mounting means of the stylus to be exchanged at the stylus exchange position of the stylus magazine when the stylus magazine moves to the stylus transfer position. 1. An automatic stylus exchange device for a copying machine tool, comprising: an attachment/detachment operating means for setting the stylus in the clamped state or in the unclamped state. 2. The tracer head elevating means includes an elevating table that holds the tracer head and slides up and down, an elevating guide means provided between the elevating table and the tracer head support, and a sliding movement of the elevating table. 2. The automatic stylus exchange device for a copying machine tool according to claim 1, comprising a feed screw mechanism that generates movement, and a motor that drives the feed screw mechanism in accordance with a control command. 3. The stylus magazine includes a magazine base movably attached to the tracer head support base, and a plurality of notches rotatably supported by the magazine base and holding the plurality of styli on the outer periphery. automatic stylus exchange for a copying machine tool according to claim 1, comprising: a magazine plate; and rotation drive means for indexing and rotating the magazine plate relative to the stylus exchange position in accordance with a control command. Device. 4. The magazine moving means includes a magazine support that is provided integrally with the tracer head support and has a guide surface for magazine movement, and a sliding base provided on the stylus magazine that is connected to the guide surface of the magazine support. Claim 1, further comprising a direct drive source that slides in contact with the stylus magazine and moves the stylus magazine forward or backward between the retracted position and the stylus transfer position in response to a stylus exchange command. Automatic stylus changing device for the copying machine tool described. 5. Claim 4, wherein the linear drive source of the magazine moving means is constituted by a cylinder device coupled to the sliding base and fixed to the magazine support base.
Automatic stylus change device for copying machine tools as described in Section. 6. The stylus mounting means provided on the stylus includes a plurality of clamping spheres that engage with V grooves formed on the outer periphery of a tapered conical portion formed at the tip of the tracer shaft of the tracer head, and a stylus mounting means on the lower end. a socket member having a fitting recess that is complementary to the tapered conical portion of the tip of the tracer shaft and a plurality of radial receiving holes that loosely fit and receive the plurality of clamping spheres, and the socket; a sleeve member that is relatively movable vertically and has a spherical contact surface facing the radial receiving hole inside the lower end, a flange outside the lower end, and an insertion opening for the tip of the tracer shaft at the upper end; , installed between the upper end of the socket member and the upper end of the sleeve member to press the sphere contacting surface of the sleeve member toward the plurality of clamping spheres received in the socket member to apply a clamping force. An automatic stylus changing device for a copying machine tool according to claim 1, wherein the automatic stylus changing device comprises a compression spring. 7. The attachment/detachment means for placing the stylus attachment means of each stylus in a clamped state or an unclamped state is provided in the stylus magazine and configured to push down the sleeve member of the stylus attachment means against the compression spring. The copying machine according to claim 6, comprising a multi-link lever that can be extended and operated, and a cylinder device that is pivotally held in the stylus magazine and that can extend and contract the multi-link lever. Machine's automatic stylus change device.