JP2007098513A - Cutting tool - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a cutting tool capable of simply and properly performing cutting for a workpiece. <P>SOLUTION: This cutting tool 1 is provided with a cutting tool body 2 performing the cutting using a blade part 12 for the workpiece 3 by ultrasonically vibrating the blade part 12, and a copying guide member 23 arranged near the blade part 12 in the cutting tool body 2 to regulate a cutting depth of the workpiece 3 by being brought into contact with the workpiece 3 at the time of cutting. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a cutting tool, and more particularly, to a cutting tool suitable for cutting a workpiece using ultrasonic vibration.

  Conventionally, as a method of cutting a workpiece, a method of manually operating a cutting tool provided with a blade part, or an operation of a cutting tool provided with a blade part by programmable numerical control based on fixed data (for example, a blade A method of automatically controlling the operation of adjusting the distance between the part and the surface of the workpiece, or a method using a water jet (for example, Patent Document 1) is known.

JP 2003-340722 A

  However, the method of manually operating the cutting tool has the disadvantage that the labor cost is high and the quality is unstable because there are many places that rely on human intuition. In particular, since considerable skill is required for cutting a workpiece having a three-dimensional shape, it has become more difficult to maintain quality.

  In addition, the method of automatically controlling the operation of the cutting tool according to a program cannot perform high-precision cutting on a workpiece (for example, a resin molded product) having a large variation or change in dimensional accuracy. There were drawbacks.

  Furthermore, since it is difficult to control the cutting depth in the method using a water jet, for example, it is not possible to selectively cut only one of a plurality of stacked workpieces. was there.

  With the background of the disadvantage of such a cutting method, there has conventionally been a problem that the cutting process on the workpiece cannot be performed simply and appropriately.

  Therefore, the present invention has been made in view of such problems, and an object of the present invention is to provide a cutting tool that can easily and appropriately perform a cutting process on a workpiece.

  In order to achieve the above-mentioned object, the cutting tool according to claim 1 of the present invention is characterized in that a cutting tool main body that performs cutting using the blade portion on a workpiece by ultrasonically vibrating the blade portion. And a copying guide member that is disposed in the vicinity of the blade portion in the cutting tool main body and regulates the cutting depth of the workpiece by contacting the workpiece during the cutting process.

  According to the first aspect of the invention, the workpiece can be cut by the blade portion while the copying guide member is in contact with the workpiece, so that the workpiece is cut at a predetermined depth. Can be performed easily and with high accuracy.

  In the present application, cutting is not limited to cutting one workpiece and separating it into two or more workpieces (in a narrow sense), but also includes cutting without separation such as grooving. A broad concept.

  The cutting tool according to claim 2 is characterized in that, in claim 1, the copying guide member surrounds a portion of a predetermined range on the tip side of the blade portion, and only the tip of the blade portion is the copying guide member. The contact surface of the copying guide member with the workpiece is formed in a curved surface so as to protrude from the contact surface with the workpiece.

  According to the second aspect of the present invention, only the tip of the blade portion can be protruded toward the workpiece by the copying guide member, so that the cutting depth of the workpiece can be kept constant. Further, since the contact surface of the copying guide member with the workpiece is formed in a curved surface, the copying guide member can be brought into contact with the workpiece smoothly, and the workpiece can be smoothly cut.

  According to a third aspect of the present invention, the cutting tool according to the first or second aspect of the present invention adjusts the dimension of the cutting allowance, which is the protruding dimension of the tip of the blade portion from the contact surface of the copying guide member with the workpiece. It is in the point provided with the cutting allowance adjusting means.

  According to the third aspect of the present invention, the cutting allowance adjusting means can adjust the size of the cutting allowance, so that various cutting depths can be appropriately cut. And convenience can be improved.

  A cutting tool according to a fourth aspect is characterized in that, in any one of the first to third aspects, the copying guide member is formed so as to be retractable from a position in contact with the workpiece.

  According to the fourth aspect of the present invention, the copying guide member can be retracted from the position where the copying guide member contacts the work as necessary, so that cutting without using the copying guide member can be performed on the work. In addition, the blade portion can be easily inspected and replaced.

  A feature of the cutting tool according to claim 5 is that, in any one of claims 1 to 4, the cutting tool main body is mounted together with the copying guide member, and a moving device that moves the cutting tool in the cutting direction is provided. It is in.

  According to the fifth aspect of the invention, since the cutting tool body can be automatically moved together with the copying guide member in the direction of the cutting process by the moving means, a highly accurate cutting process is automatically performed on the workpiece. Therefore, workability and mass productivity can be improved.

  A feature of a cutting tool according to a sixth aspect is that, in any one of the first to fifth aspects, the copying guide member is supported by a toggle link mechanism.

  According to the sixth aspect of the invention, the copying guide member can be reliably supported against the cutting resistance by the toggle link mechanism, so that the workpiece can be stably cut.

  The cutting tool according to claim 7 is characterized in that a cutting tool main body that performs cutting using the blade portion on the workpiece while ultrasonically vibrating the blade portion, and the vicinity of the blade portion in the cutting tool main body. And a pressing member that presses the workpiece during the cutting process.

  According to the seventh aspect of the invention, the workpiece can be cut by the blade while the workpiece is thickened by the pressing member, so that the cutting of the thick workpiece can be performed easily and appropriately. Can be done.

  The cutting tool according to claim 8 is characterized in that, in claim 7, the pressing member surrounds a portion of a predetermined range on the tip side of the blade portion, and the tip of the blade portion is the workpiece on the pressing member. The pressing surface of the workpiece in the pressing member is formed in a curved surface.

  And according to this invention concerning Claim 8, since a workpiece | work can be pressed by a press member, the cutting process using a blade part can be performed simply and reliably also to a thick workpiece. . Furthermore, since the pressing surface of the workpiece in the pressing member is formed into a curved surface, the pressing member can be smoothly pressed, and the workpiece can be smoothly cut.

  A feature of a cutting tool according to a ninth aspect resides in that the urging means for urging the pressing member toward the workpiece is provided in the seventh or eighth aspect.

  And according to this invention concerning Claim 9, the pressing force for pressing a workpiece | work with respect to a press member can be provided with a simple structure.

  A feature of a cutting tool according to a tenth aspect is that, in any one of the seventh to ninth aspects, the pressing member is formed so as to be retractable from a position where the workpiece is pressed.

  According to the invention of claim 10, since the pressing member can be retracted from the position where the workpiece is pressed as necessary, the workpiece can be cut as in the case of cutting a thin workpiece. Cutting can be performed without pressing, and the blade portion can be easily inspected and replaced.

  The cutting tool according to an eleventh aspect is characterized in that in any one of the seventh to tenth aspects, the cutting tool main body is mounted together with the pressing member and is moved in a cutting process direction. is there.

  According to the eleventh aspect of the invention, since the cutting tool body can be automatically moved together with the pressing member in the direction of the cutting process by the moving means, a highly accurate cutting process is automatically performed on the workpiece. Therefore, workability and mass productivity can be improved.

  A feature of a cutting tool according to a twelfth aspect is that, in any one of the seventh to eleventh aspects, the pressing member is supported by a toggle link mechanism.

  According to the twelfth aspect of the present invention, the pressing member can be reliably supported against the cutting process resistance by the toggle link mechanism, so that the workpiece can be stably cut.

  According to the cutting tool according to the present invention, it is possible to easily and appropriately perform a cutting process on a workpiece. More specifically, it is possible to easily and accurately perform a cutting process with a predetermined cutting depth on the workpiece. Or the cutting process with respect to a thick workpiece | work can be performed simply and reliably.

  Moreover, cost and power consumption can be reduced by performing a cutting process by ultrasonically vibrating the blade portion.

(First embodiment)
Hereinafter, a first embodiment of a cutting tool according to the present invention will be described with reference to FIGS. 1 to 6.

  As shown in FIG. 1, the cutting tool 1 in this embodiment has the cutting tool main body 2 made long in the vertical direction in FIG.

  This cutting tool main body 2 is fixed to the lower end surface of the arm 5 of a robot (not shown) as a moving device that is movable in the cutting process direction (lateral direction in FIG. 1) of the workpiece 3 such as a resin molded product. Has been.

  Therefore, the cutting tool body 2 can be automatically moved in the direction of the cutting process as the arm 5 moves.

  The cutting tool main body 2 will be described in detail. The cutting tool main body 2 has a slide guide mounting portion 6 having a substantially J-shaped longitudinal section fixed to the lower end surface of the arm 5. 1, a slide guide 7 that is long in the vertical direction is attached to the left side surface. A slider 10 having a first air cylinder 9 is held on the slide guide 7 so as to be slidable in the vertical direction.

  More specifically, the slider 10 includes a long side portion 10a elongated in the vertical direction in FIG. 1, an upper side portion 10b extending leftward from the upper end portion of the long side portion 10a, and a long side portion 10a. The lower side part 10c extended rightward from the lower end part of this.

  The first air cylinder 9 is fixed to the long side portion 10 a of the slider 10, and the first air cylinder 9 is held by the slide guide 7 so as to be slidable directly.

  A coil spring 11 is disposed between the lower end surface of the first air cylinder 9 in FIG. 1 and the upper surface of the lower side portion 6a of the slide guide mounting portion 6 facing the lower end surface of the first air cylinder 9 from below. ing.

  The coil spring 11 applies an elastic force to the slider 10, so that an ultrasonic cutter 12 to be described later has a constant amount with respect to the workpiece 3 regardless of variations in the thickness direction (vertical direction in FIG. 1) of the workpiece 3. The cutting depth is held so that the cutting process can be performed stably.

  The first air cylinder 9 can adjust the elastic force acting on the slider 10 by adjusting the internal pressure.

  A transducer holding portion 14 is fixed to the lower surface of the lower side portion 10c of the slider 10, and the transducer holding portion 14 is subjected to ultrasonic vibration when supplied with power from a power source (not shown). Is held.

  A cutter attachment portion 16 is fixed to the lower surface 15 a of the vibrator 15 in FIG. 1, and an ultrasonic cutter 12 as a blade portion is attached to the lower end surface of the cutter attachment portion 16.

  The ultrasonic cutter 12 performs cutting processing on the workpiece 3 by performing ultrasonic vibration following the vibrator 15.

  By using such an ultrasonic cutter 12, it is possible to perform cutting processing on the workpiece 3 at low cost and with low power consumption.

  A support member 17 having a tip end portion (lower end portion in FIG. 1) formed wider toward the lower left direction in FIG. 1 on the lower surface of the vibrator holding portion 14 in FIG. Is fixed through.

  At the front end portion of the support member 17, two rotation support portions 20 and 21 spaced apart from each other by a predetermined distance are formed, and one of these two rotation support portions 20 and 21 (FIG. 1). The arm portion 22 is rotatably supported at the base end portion of the rotation support portion 20 on the left side.

  The arm part 22 is movable between a cutting position indicated by a solid line in FIG. 1 and a retracted position indicated by a two-dot chain line in FIG.

  The copying guide member 23 is fixed to the distal end portion of the arm portion 22 by a fixing means 24 such as a bolt. The copying guide member 23 rotates integrally with the arm portion 22. In addition, it can swing between a cutting position (solid line portion in FIG. 1) and a retracted position (two-dot chain line in FIG. 1).

  The copying guide member 23 regulates the cutting depth of the workpiece 3 to a constant cutting depth by contacting the surface of the workpiece 3 at a cutting position that is in the vicinity of the ultrasonic cutter 12. .

  The copying guide member 23 will be described in more detail. The copying guide member 23 is formed integrally with a substantially hemispherical guide portion 26 having a contact surface S with the workpiece 3 at the time of cutting. 1 has a base 27 elongated in the vertical direction in FIG.

  The guide portion 26 surrounds a portion of a predetermined range on the distal end side of the ultrasonic cutter 12 at the cutting position.

  Further, as shown in an enlarged view in FIG. 2, a slit 29 is formed at a position corresponding to the ultrasonic cutter 12 in the guide portion 26, and the tip of the ultrasonic cutter 12 (in the figure, through the slit 29). Only the lower end) protrudes toward the workpiece 3 from the contact surface S with the workpiece 3 in the guide portion 26.

  As a result, only the tip of the ultrasonic cutter 12 is cut into the workpiece 3, so that the cutting depth of the workpiece 3 is set to the protruding dimension of the tip of the ultrasonic cutter 12 from the contact surface S with the workpiece 3 in the copying guide member 23. It is possible to regulate to a certain cutting depth corresponding to the cutting allowance dimension t.

  Further, since the contact surface S with the workpiece 3 in the copying guide member 23 is formed in a spherical surface (convex curved surface), the copying guide member 23 can be brought into smooth contact with the workpiece 3 and the cutting process on the workpiece 3 can be smoothly performed. Can be done.

  An extension portion 30 extends toward the left in FIG. 1 at the lower end portion of the base portion 27 of the copying guide member 23, and the extension portion 30 and an arm portion facing the extension portion 30 from above. A cutting allowance adjusting member 31 is disposed between the lower end portion of 22.

  The cutting allowance adjusting member 31 can adjust the cutting allowance dimension t by adjusting the distance between the extending portion 30 and the arm portion 22. Note that the fixing position of the base 27 in the copying guide member 23 by the fixing means 24 can be changed as the cutting allowance is adjusted.

  Thereby, since the dimension t of a cutting allowance can be adjusted, the cutting process of a more various cutting depth can be performed appropriately, and versatility and convenience can be improved by extension.

  Furthermore, in the present embodiment, as described above, the copying guide member 23 can be retracted from the cutting position to the retracted position as the arm portion 22 rotates, so that the copying guide member with respect to the workpiece 3 is The cutting process which does not use 23 can also be performed, and the inspection and replacement | exchange of the ultrasonic cutter 12 can be performed easily.

  Of the two rotation support portions 20 and 21 in the support member 17 described above, the rotation support portion 21 on the other side (right side in FIG. 1) different from the one rotation support portion 20 that supports the arm portion 22 includes: One end portion (upper end portion in FIG. 1) of the toggle link 32 is rotatably supported.

  A lower end portion of the second air cylinder 34 is rotatably supported via a pin 21A at the tip end portion (the lower end portion in FIG. 1) of the toggle link 32. The upper end portion of the second air cylinder 34 is The slider 10 is rotatably supported by a bracket 35 suspended from the lower surface of the upper side portion 10b of the slider 10.

  One end of the second link 33 is rotatably contacted to the pin 21, and the other end of the second link 33 is an intermediate portion between the proximal end portion and the distal end portion of the toggle link 32 at the cutting position. At this point, the arm portion 22 is rotatably supported via the pin 33A.

  The toggle link 32 can reliably prevent the arm portion 22 from rotating from the cutting position to the retracted position due to cutting resistance when cutting the workpiece 3.

  Therefore, according to the present embodiment, the copying guide member 23 can be surely supported against the cutting resistance by maintaining the toggle link 32 and the second link 33 in a straight line. It is possible to stably perform the cutting process with a cutting depth of.

  Further, since the second air cylinder 34 can absorb the backlash in the longitudinal direction of the copying guide member 23 due to the variation in the dimension of the workpiece 3 in the thickness direction, the workpiece 3 is cut at a predetermined cutting depth. Processing can be performed more stably.

Next, examples of the present embodiment will be described with reference to FIGS.

  In the first embodiment, a cutting process for cutting and separating the thin workpiece 3 as shown in FIG. 3 is performed as a cutting process with a predetermined (fixed) cutting depth on the workpiece 3.

  In order to perform this cutting process, the copying guide member 23 is positioned at the cutting position, and the cutting allowance adjusting member 31 adjusts the cutting allowance dimension t to a dimension corresponding to the thickness of the workpiece 3.

  Then, the cutting tool body 2 is automatically moved in the cutting direction by the arm 5 while driving the vibrator 15 to ultrasonically vibrate the ultrasonic cutter 12.

  At this time, since the guide portion 26 of the copying guide member 23 is in contact with the peripheral portion of the workpiece 3 where the cutting process is performed by the ultrasonic cutter 12 via the contact surface S, the cutting allowance is reliably maintained. In this state, cutting is performed smoothly.

  Therefore, according to the present embodiment, even a thin and soft workpiece 3 such as a resin film can be reliably cut.

  In Example 2, as a cutting process with a predetermined cutting depth on the work 3, only the first-layer work 3a in the work 3 having a two-layer structure as shown in FIG. 4 is cut.

  In order to perform this cutting process, the copying guide member 23 is positioned at the cutting process position, and the cutting allowance adjusting member 31 is used to adjust the cutting allowance dimension t to a dimension corresponding to the thickness of the first workpiece 3a.

  Then, the cutting tool body 2 is automatically moved in the cutting direction by the arm 5 while driving the vibrator 15 to ultrasonically vibrate the ultrasonic cutter 12.

  At this time, the guide portion 26 of the copying guide member 23 is in contact with the peripheral portion of the portion of the first-layer workpiece 3a where the cutting is performed by the ultrasonic cutter 12 via the contact surface S, as in the first embodiment. Therefore, the cutting process is smoothly performed in a state where the cutting allowance is securely held.

  Therefore, according to the present embodiment, it is possible to easily and accurately perform the cutting process on only the first-layer workpiece 3a of the workpiece 3 having a two-layer structure, for example, the skin of the dimensionally unstable resin product.

  In the third embodiment, a grooving process with a predetermined depth is performed on the work 3 as shown in FIG.

  To perform grooving in this embodiment, the copying guide member 23 is positioned at the cutting position, and the cutting allowance adjusting member 31 adjusts the cutting allowance t to a dimension corresponding to the groove depth.

  Then, the cutting tool main body 2 is automatically moved in the grooving direction by the arm 5 while driving the vibrator 15 to ultrasonically vibrate the ultrasonic cutter 12.

  At this time, the guide portion 26 of the copying guide member 23 is in contact with the peripheral portion of the workpiece 3 where the groove cutting is performed by the ultrasonic cutter 12 via the contact surface S, as in the first embodiment. Therefore, the grooving process is smoothly performed in a state where the cutting allowance is securely held.

  Therefore, according to the present embodiment, grooving of a predetermined depth on the workpiece 3, for example, grooving for easily cutting and separating the workpiece in a subsequent process can be performed easily and with high accuracy.

  In this embodiment, a cutting process without using the copying guide member 23 is performed on the workpiece 3 as shown in FIG.

  In order to perform the cutting process in the present embodiment, the cutting tool body 2 is moved to the robot 5 while the ultrasonic cutter 12 is ultrasonically vibrated by driving the vibrator 15 with the copying guide member 23 retracted to the retracted position. Automatically move in the cutting direction.

  Therefore, according to the present embodiment, it is possible to appropriately perform a cutting process on the workpiece 3 without using the copying guide member 23.

(Second Embodiment)
Next, 2nd Embodiment of the cutting tool which concerns on this invention is described with reference to FIG. 7 and FIG. 8 focusing on the difference with 1st Embodiment.

  Note that portions having the same or similar basic configuration as the first embodiment will be described using the same reference numerals.

  As shown in FIG. 7, the cutting tool 37 in the present embodiment compresses and cuts a thick non-woven fabric or the like to a cutable thickness, for example, and has a cutting tool main body 39 fixed to the lower surface of the arm 5. Yes.

  The cutting tool main body 39 has the same basic configuration as that of the first embodiment, but the slide guide mounting portion 6, the slide guide 7, the first air cylinder 9, the slider 10, and the coil spring 11 are formed in a cylindrical casing. 40 and not shown in the drawing.

  A support member 17 having two rotation support portions 20 and 21 formed thereon is fixed to the lower surface of the vibrator holding portion 14 as in the first embodiment, and one rotation support portion of the support member 17 is provided. 20, the arm part 41 is supported so as to be rotatable between a cutting position (solid line part in FIG. 7) and a retracted position (dashed line part in FIG. 7).

  A pressing member 42 is disposed at the tip of the arm portion 41, and the pressing member 42 rotates integrally with the arm portion 41, so that the cutting position (solid line portion in FIG. 7) and It is possible to move between the retracted positions (broken lines in FIG. 7).

  The pressing member 42 is configured to press the workpiece 3 at a cutting position that is in the vicinity of the ultrasonic cutter 12.

  The pressing member 42 will be described in more detail. The pressing member 42 is a figure formed integrally with the pressing portion 43 and a substantially hemispherical pressing portion 43 having a pressing surface S of the workpiece 3 in the cutting process. 7 has a base portion 45 elongated in the longitudinal direction, and a slide guide portion 46 elongated in the longitudinal direction in FIG.

  The pressing portion 43 surrounds a portion of a predetermined range on the distal end side of the ultrasonic cutter 12 at the cutting position.

  Furthermore, a slit (not shown) similar to that shown in FIG. 2 is formed at a position corresponding to the ultrasonic cutter 12 in the pressing portion 43, and the tip of the ultrasonic cutter 12 passes through this slit. The pressing portion 43 protrudes closer to the workpiece 3 than the pressing surface S of the workpiece 3.

  On the other hand, an air cylinder 47 is disposed at a position corresponding to the slide guide portion 46 in the pressing member 42 at the distal end portion of the arm portion 41, and the air cylinder 47 slides on the slide guide portion 46. It is held freely. The air cylinder 47 is slidable relative to the slide guide portion 46, but the slide guide portion 46 actually slides.

  Further, a claw-like urging means attaching portion 49 extending toward the upper end portion of the base 45 of the pressing member 42 is extended at the distal end portion of the arm portion 41, and in the urging means attaching portion 49 and the pressing member 42. A biasing means 50 such as a coil spring that biases the pressing member 42 toward the workpiece 3 is disposed between the upper end of the base 45.

  Therefore, since the workpiece 3 can be pressed to a cutable thickness by the pressing member 42 via the urging force of the urging means 50, the cutting process using the ultrasonic cutter 12 is performed even on the workpiece 3 such as a thick nonwoven fabric. Can be carried out easily and reliably.

  Further, in the present embodiment, the internal pressure of the air cylinder 47 can be adjusted to appropriately adjust the pressing force of the pressing member 42, and the cutting process with the pressing of the workpiece 3 can be performed stably.

  Furthermore, in this embodiment, since the pressing surface S of the workpiece 3 in the pressing member 42 is formed into a spherical surface (curved surface), the pressing member 42 can be pressed smoothly, and the cutting process on the workpiece 3 can be performed smoothly. It can be carried out.

  In addition, as shown in FIG. 7, you may comprise so that it can respond also to the cutting process of predetermined thickness by providing the cutting allowance adjustment member 31 similar to 1st Embodiment. In this case, when performing a cutting process involving pressing of the workpiece 3 by the pressing member 42, the cutting allowance adjusting member 31 is held in a free state in which the dimensions of the cutting allowance are not fixed.

  As shown in FIG. 7, in this embodiment, the toggle link 32 is rotatably supported by the arm part 41 similarly to 1st Embodiment.

  Therefore, since the pressing member 42 can be reliably supported against the cutting process resistance by the toggle link 32, the cutting process on the thick workpiece 3 can be stably performed.

  Further, in the present embodiment, it is possible to perform cutting without accompanying the pressing of the workpiece 3 by the pressing member 42 with the pressing member 42 retracted to the retracted position. This cutting process is exactly the same as the cutting process (FIG. 6) of the workpiece 3 that does not use the copying guide member 23 in the first embodiment.

  Next, an example of the present embodiment will be described with reference to FIG.

  In this embodiment, a cutting process for cutting and separating the thick workpiece 3 as shown in FIGS. 7 and 8 is performed.

  In order to perform the cutting process in this embodiment, the cutting tool main body 39 is moved to the robot 5 while driving the vibrator 15 and ultrasonically vibrating the ultrasonic cutter 12 with the pressing member 42 positioned at the cutting process position. Automatically move in the cutting direction.

  At this time, since the thickness of the portion of the workpiece 3 where the cutting process is performed by the ultrasonic cutter 12 and its peripheral portion are compressed by the pressing member 42, the tip of the ultrasonic cutter 3 is placed below the workpiece 3. It can reach the surface.

  Further, since the pressing surface S of the work 3 in the pressing member 42 is a spherical surface, the pressing member 42 can be smoothly pressed against the work 3.

  Thereby, the cutting process of the workpiece | work 3 by the ultrasonic cutter 12 can be performed reliably and smoothly.

  Therefore, according to the present embodiment, the thick workpiece 3 can be reliably cut and separated.

  As described above, according to the cutting tools 1 and 37 according to the present invention, the cutting process on the workpiece 3 can be performed simply and appropriately. Specifically, a cutting process with a predetermined cutting depth on the workpiece 3 can be performed easily and with high accuracy, or a cutting process on the thick workpiece 3 can be performed easily and reliably.

  In addition, this invention is not limited to embodiment mentioned above, A various change is possible as needed.

  For example, the shape of the guide portion 26 in the copying guide member 23 described above is not limited to the substantially hemispherical shell shape as described above, and if the contact surface S with the workpiece 3 is a curved surface, for example, A shape other than a substantially hemispherical shell shape such as a hemispherical shell shape or a bowl shape may be employed.

  This can be similarly applied to the shape of the pressing portion 43 in the pressing member 42.

  Further, an opening may be formed instead of the slit 29 formed in the guide portion 26 in the copying guide member 23 described above. The same applies to the pressing portion 43 in the pressing member 42.

1 is a schematic side view showing a first embodiment of a cutting tool according to the present invention. The bottom view which expands and shows the copying guide member in the 1st Embodiment The side view which shows the principal part of the 1st Example in the same 1st Embodiment The side view which shows the principal part of the 2nd Example in the 1st Embodiment The side view which shows the principal part of the 3rd Example in the same 1st Embodiment The side view which shows the principal part of the 4th Example in the same 1st Embodiment The side view which shows 2nd Embodiment of the cutting tool which concerns on this invention. The side view which shows the principal part of the Example in the 2nd Embodiment

Explanation of symbols

1, 37 ... Cutting tool 2, 39 ... Cutting tool body
DESCRIPTION OF SYMBOLS 3 ... Work 5 ... Robot 12 ... Ultrasonic cutter 23 ... Copying guide member 31 ... Cutting allowance adjusting member 32 ... Toggle link 42 ... Pressing member

Claims (12)

A cutting tool main body that performs cutting using the blade portion on the workpiece by ultrasonically vibrating the blade portion;
A cutting guide provided in the vicinity of the blade portion in the cutting tool main body, and a copying guide member that regulates a cutting depth of the workpiece by contacting the workpiece during the cutting process. tool. A shape in which the copying guide member surrounds a portion of a predetermined range on the front end side of the blade portion, and only the front end of the blade portion protrudes to the workpiece side from the contact surface of the copying guide member with the workpiece. Formed into
The cutting tool according to claim 1, wherein a contact surface of the copying guide member with the workpiece is formed into a curved surface. The cutting allowance adjusting means for adjusting a cutting allowance dimension, which is a protruding dimension of the tip of the blade portion from the contact surface with the workpiece in the copying guide member, is provided. Cutting tool as described. The cutting tool according to any one of claims 1 to 3, wherein the copying guide member is formed to be retractable from a position in contact with the workpiece. The cutting tool according to any one of claims 1 to 4, further comprising a moving device that mounts the cutting tool main body together with the copying guide member and moves the cutting tool main body in a cutting process direction.   The cutting tool according to any one of claims 1 to 5, wherein the copying guide member is supported by a toggle link mechanism. A cutting tool main body that performs cutting using the blade portion on the workpiece while ultrasonically vibrating the blade portion;
A cutting tool, comprising: a pressing member that is disposed in the vicinity of the blade portion of the cutting tool main body and presses the workpiece during the cutting process. The pressing member surrounds a portion of a predetermined range on the tip side of the blade portion, and is formed in a shape that protrudes the tip of the blade portion to the workpiece side from the pressing surface of the workpiece in the pressing member,
The cutting tool according to claim 7, wherein a pressing surface of the workpiece in the pressing member is formed into a curved surface.   The cutting tool according to claim 7 or 8, further comprising biasing means for biasing the pressing member toward the workpiece. The cutting tool according to any one of claims 7 to 9, wherein the pressing member is formed so as to be retractable from a position where the workpiece is pressed. The cutting tool according to any one of claims 7 to 10, further comprising a moving device that mounts the cutting tool main body together with the pressing member and moves the cutting tool main body in a cutting direction.   The cutting tool according to any one of claims 7 to 11, wherein the pressing member is supported by a toggle link mechanism.

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