JP5918542B2 - Machining tool, machining method and machine tool - Google Patents

Description

  The present invention relates to a machining tool suitable for machining a relatively large-diameter screw on a workpiece or a machining tool for performing an inner surface finish machining of a hole, a machining method using the machining tool, and a machine tool.

For example, a tap is used to process a female screw on a workpiece with a machine tool or the like (see Patent Document 1 and Patent Document 2).
To do this, first, a drill is attached to the spindle of the machine tool, and a pilot hole is machined into the workpiece with this drill. Subsequently, after attaching a tap to the main shaft, positioning the tap in the pilot hole, and feeding it in the axial direction while rotating the main shaft, the tap is also rotated along with the rotation of the main shaft, so that a female screw is processed on the workpiece. .

However, when machining a relatively large-diameter female screw on a workpiece, machining is performed by attaching a large-diameter tap corresponding to the female screw to be machined to the main shaft. There are cases where it cannot be processed. For example, if the motor for rotating the spindle is 15 kW and an attempt is made to machine the M42 female thread, the machining cannot be performed due to insufficient motor capacity.
Such a problem occurs not only in the internal thread processing but also in the external thread processing and the inner surface finishing processing in which the inner surface of the hole is reamed.

Therefore, the present applicant has previously proposed a machining tool, a machining method, and a machine tool that solve these problems (see Patent Document 3).
This machining tool is a machining tool for machining a screw or a machining tool for finishing an inner surface of a hole, and includes an arm, a spindle mounting portion provided at one end of the arm and mounted on a spindle of a machine tool, It is the structure provided with the tap or dice | dies or reamer provided in the other end.
Therefore, in the case of a machining tool provided with a tap, after the spindle mounting portion is mounted on the spindle of the machine tool, the machining tool tap is positioned in a prepared hole that has been previously machined into the workpiece. Subsequently, the spindle mounting portion is moved around the tap in a circular motion with a radius from the center to the spindle mounting portion as a radius to rotate the tap, and the machining tool per rotation in the axial direction of the tap and the tap. Send one pitch at a time. Then, since the tap is fed in the axial direction while rotating along the pilot hole, the female screw is processed on the workpiece.
At this time, since the force that causes the spindle mounting portion to make a circular motion about the tap may be small, a relatively large-diameter female screw can be processed efficiently.

JP 2010-89217 A JP 2010-221369 A Japanese Patent Application No. 2011-204770

  However, in the case of the machining tool described in Patent Document 3, when the spindle mounting part is mounted on the spindle of the machine tool, the tap position of the machining tool is shifted by the length of the arm with respect to the axis of the spindle, and the spindle Since the mounting angle of the arm is not constant, it is difficult to position the tap of the machining tool in the prepared hole of the workpiece.

  The object of the present invention is to eliminate such problems and to efficiently perform relatively large-diameter screw machining and inner surface finishing of holes, and in the machining, taps and the like can be easily placed in the workpiece hole. To provide a processing tool, a processing method, and a machine tool capable of positioning.

A machining tool of the present invention is a machining tool for machining a screw or a machining tool for finishing an inner surface of a hole, and an arm-shaped tool body extending in a direction intersecting with a main axis of a machine tool, and the tool body with respect to the tool body. A slider provided to be slidable in an intersecting direction, the tool body is provided with a spindle mounting portion to be mounted on a spindle of a machine tool, and the slider is provided with a tap, a die or a reamer. It is characterized by being provided in parallel with the axis.

According to such a configuration, in the state where the slider is slid with respect to the tool body and the shaft of the tap or the die or the reamer is aligned with the axis of the main shaft mounting portion, the main shaft mounting portion is mounted on the main shaft of the machine tool. Then, the tap or die or reamer is positioned at the processing site of the workpiece.
For example, in the case of a machining tool equipped with a tap, the spindle mounting portion is mounted on the spindle of the machine tool, and the machining tool tap is positioned in a prepared hole that has been previously machined into the workpiece. At this time, since the axis of the tap coincides with the axis of the main shaft mounting portion, that is, the axis of the main axis, the tap of the processing tool can be positioned in the lower hole of the workpiece only by positioning the main axis at the center position of the lower hole. . Therefore, the tap can be easily positioned in the work hole.

Subsequently, the tool body is slid by a predetermined distance with respect to the slider while the tap is fixed to the prepared hole. After that, the spindle mounting portion is moved circularly around the tap with the radius from the center to the spindle mounting portion as a radius to rotate the tap, and the machining tool per one rotation in the axial direction of the tap and the tap. Send one pitch at a time. Then, since the tap is fed in the axial direction while rotating along the pilot hole, the female screw is processed on the workpiece.
At this time, since the force that causes the spindle mounting portion to make a circular motion about the tap may be small, a relatively large-diameter female screw can be processed efficiently.

Even in the case of a machining tool equipped with a die and a reamer, the die and the reamer can be easily positioned in the shaft portion of the work or the pilot hole of the work in the same procedure as the tap. Thereafter, in the same manner as described above, the spindle mounting portion is rotated around the die or reamer in a circular motion with the radius from the center to the spindle mounting portion as a radius, and the die or reamer is rotated and the machining tool per rotation. Is fed in the axial direction of the die or reamer and by one pitch of the die or reamer, so that the external thread machining or the inner surface finishing of the hole can be performed.
Accordingly, it is possible to efficiently perform the processing of a relatively large diameter male screw and the inner surface finishing of the hole.

The processing tool of the present invention preferably has a positioning mechanism for positioning the slider with respect to the tool main body at a reference position where the axis of the tap or die or reamer coincides with the axis of the spindle mounting portion.
According to such a configuration, since the positioning mechanism is provided, the axis of the tap, the die, or the reamer can be easily matched with the axis of the main shaft mounting portion.

In the processing tool of the present invention, it is preferable that biasing means for biasing the slider to the reference position is provided.
According to such a configuration, when the tap, the die, or the reamer is pulled out from the processing portion of the workpiece, the slider is automatically returned to the reference position by the biasing means. Since it is not necessary to slide the slider with respect to the tool main body so that the axis of the axis coincides with the axis of the main shaft mounting portion, the machining operation can be performed efficiently.

In the processing tool according to the aspect of the invention, it is preferable that the slider is provided with a blade portion attachment portion for attaching the tap, the die, or the reamer to the tool body in a replaceable manner.
According to such a configuration, since the tap, the die, or the reamer can be exchanged for the slider by the blade attachment portion, if the tap is changed to a tap having a different diameter, a different diameter is obtained depending on one processing tool. Internal and external threads can be processed. Furthermore, if it replaces | exchanges for a reamer from which a diameter differs, not only the internal thread and external thread of a different diameter but the inner surface finishing process of a different internal diameter can be performed with one processing tool.

In the processing tool of the present invention, it is preferable that the tap, the die, or the reamer has a blade diameter of 30 mm or more.
According to such a configuration, it is possible to efficiently perform the internal finishing of the relatively large-diameter female screw and male screw, and further the hole.

  The machining method of the present invention is a machining method for machining a female screw on a workpiece using any of the machining tools described above, wherein a machining tool having a tap attached to the slider is prepared, and the axis of the tap is the In a state where the slider is slid with respect to the tool main body at a reference position coincident with the axis of the spindle mounting portion, the tap is inserted into a prepared hole formed in the workpiece and positioned, and the tap is fixed to the prepared hole. In this state, the tool body is slid by a predetermined distance with respect to the slider, and then the tap is rotated with a circular motion having a radius from the center to the spindle mounting portion as a radius. A female screw is machined on a workpiece while feeding the machining tool in the axial direction of the tap and by one pitch of the tap per rotation. To.

According to such a configuration, the slider is slid with respect to the tool body, and the tap is inserted into the prepared hole formed in the workpiece and positioned in a state where the axis of the tap coincides with the axis of the spindle mounting portion. That is, since the axis of the tap coincides with the axis of the main shaft mounting portion and the axis of the main shaft, the tap of the processing tool can be positioned in the lower hole of the workpiece only by positioning the main shaft at the center position of the lower hole. Therefore, the tap or the like can be easily positioned in the work hole.
Subsequently, after the tool body is slid by a predetermined distance with respect to the slider with the tap fixed to the pilot hole, the spindle mounting portion is centered on the tap and the distance from the center to the spindle mounting portion is the radius. The tap is rotated by circular movement, and the machining tool per rotation is sent in the axial direction of the tap and by one pitch of the tap. Then, since the tap is fed in the axial direction while rotating along the pilot hole, the female screw is processed on the workpiece.
Therefore, even if the force for rotating the spindle mounting portion is small, a relatively large diameter female screw can be processed efficiently.

The machine tool of the present invention includes a table on which a workpiece is placed, a main shaft, a rotation drive mechanism that rotationally drives the main shaft, and the table and the main shaft that are parallel to the axis of the main shaft and orthogonal to the axis. A machine tool body provided with a linear drive mechanism that relatively moves in the axial direction, a control device that drives and controls the rotation drive mechanism and the linear drive mechanism according to a machining program, and a machining tool attached to the spindle, Any of the above-described processing tools is used as the processing tool.
According to such a configuration, when the rotation drive mechanism and the linear drive mechanism are driven and controlled by the control device, the tap or die or reamer of the machining tool mounted on the main shaft is easily positioned in the prepared hole or shaft portion of the workpiece. In addition, it is possible to carry out internal thread machining, male thread machining or inner surface machining of holes on the workpiece. Therefore, more efficient processing can be realized.

1 is a perspective view showing a machine tool according to a first embodiment of the present invention. The perspective view which shows the processing tool used in the said embodiment. Sectional drawing which shows the processing tool used in the said embodiment. The figure which shows a state when the processing tool of the said embodiment is positioned to a prepared hole. The figure which shows a state when the processing tool of the said embodiment is slid. The figure which shows the state which is processing the internal thread using the processing tool of the said embodiment. Sectional drawing which shows the processing tool used in 2nd Embodiment of this invention. The perspective view which shows the processing tool used in 3rd Embodiment of this invention. The figure which shows the modification of the processing tool of this invention.

[First Embodiment]
FIG. 1 is a perspective view showing a first embodiment of a machine tool of the present invention.
The machine tool includes a machine tool main body 10, a control device 30 that drives and controls the machine tool main body 10 according to a machining program, and a processing tool 50A that is attached to the machine tool main body 10 and processes a workpiece as a workpiece. .

<Description of machine tool body (see FIG. 1)>
The machine tool body 10 includes a base 11, an X table 12A provided on the upper surface of the base 11 so as to be movable in the front-rear direction (X-axis direction), and an axis (C axis) perpendicular to the upper surface of the X table 12A. A rotary table 12B that is rotatably provided at the center and places a workpiece as a workpiece on the upper surface, a pair of columns 13A and 13B that are erected on both sides of the base 11, and an upper portion between the columns 13A and 13B. A cross rail 14 that is stretched over, a saddle 15 that is movable along the cross rail 14 in the left-right direction (Y-axis direction), and the saddle 15 can be moved up and down in the vertical direction (Z-axis direction). The portal machine tool includes a ram 16 provided, a main shaft 17 rotatably accommodated in the ram 16, and a rotational drive source (not shown) that rotationally drives the main shaft 17. . A processing tool 50A for internal thread processing is attached to the tip of the main shaft 17 by an automatic tool changer or manually.

The base 11 is provided with an X-axis linear drive mechanism (not shown) for moving the X table 12A in the X-axis direction. The X table 12A has a rotary table 12B and a C-axis (axis parallel to the Z-axis). A rotation drive mechanism (not shown) that rotates around the center is provided. The cross rail 14 is provided with a Y-axis linear drive mechanism 22 that moves the saddle 15 in the Y-axis direction, and the saddle 15 is provided with a Z-axis linear drive mechanism 23 that moves the ram 16 in the Z-axis direction. .
Accordingly, the work placed on the rotary table 12B can be rotated and moved in the X-axis direction, and the processing tool 50A attached to the main shaft 17 can be rotated, moved in the Y-axis direction and the Z-axis direction. It is configured to be possible.

<Description of control device (see FIG. 1)>
The control device 30 controls the drive of the machine tool body 10 manually or according to a preset program. Specifically, the control device 30 controls the X-axis linear drive mechanism of the X table 12A and the rotary drive mechanism of the rotary table 12B. The Y-axis linear drive mechanism 22 of the saddle 15, the Z-axis linear drive mechanism 23 of the ram 16, and the rotational drive source of the main shaft 17 are driven and controlled according to a preset machining program.

<Description of machining tool (see FIGS. 2 and 3)>
FIG. 2 is a perspective view showing a processing tool 50A for internal thread processing, and FIG. 3 is a cross-sectional view of the processing tool 50A.
The processing tool 50A includes a tool main body 51, a slider 53 provided so as to be slidable with respect to the tool main body 51, and a spindle mounting portion provided on the upper surface of one end of the tool main body 51 at a right angle to the sliding direction of the slider 53. 55, a tap 56A provided on the lower surface of the slider 53 in parallel with the axis of the spindle mounting portion 55, and the slider 53 with respect to the tool body 51 at a reference position where the axis of the tap 56A coincides with the axis of the spindle mounting portion 55. The positioning mechanism 61 includes a positioning mechanism 61 and a biasing means 64 that biases the slider 53 to the reference position.

The tool body 51 has a rectangular parallelepiped shape with a rectangular cross section, and has a T-shaped guide groove 52 that opens to the lower surface along the longitudinal direction.
The slider 53 is a rectangular plate-like block slidably provided along the guide groove 52 of the tool main body 51, and a blade portion attachment portion 54 for attaching a tap 56 </ b> A having a different diameter to the slider 53 so as to be replaceable on the lower surface. Have. The blade attachment portion 54 includes a square hole 43A formed through the slider 53 and a set screw 44 screwed from the side surface of the slider 53 toward the square hole 43A.
The main shaft mounting portion 55 is formed in a taper shank so that it can be inserted into the tool mounting portion of the machine tool, that is, the main shaft 17.

  The tap 56 </ b> A includes a shank portion 57, a square shaft 58 formed at the upper end of the shank portion 57 and engaged with the square hole 43 </ b> A of the slider 53, and a female thread processing portion 59 </ b> A integrally formed at the lower end of the shank portion 57. It consists of and. The female thread machining portion 59A is formed with a female thread machining blade having the same shape as the female thread to be machined, and a plurality of cut grooves are formed along the axial direction at fixed angular intervals. Here, the outer diameter dimension of the female thread processed portion 59A is about 30 mm or more, but is not limited thereto.

The positioning mechanism 61 is constituted by a positioning pin 62 protruding from the guide groove 52 of the tool body 51. The positioning pin 62 contacts the side surface of the slider 53 to position the slider 53 when the slider 53 moves to a reference position where the axis of the tap 56A coincides with the axis of the main shaft mounting portion 55. In the guide groove 52 on the side opposite to the positioning pin 62, a drop prevention pin 63 for preventing the slider 53 from dropping from the tool body 51 is projected.
The biasing means 64 is stretched between the locking pins 65 provided in the guide groove 52 of the tool main body 51, the locking pins 66 attached to the side surface of the slider 53, and the locking pins 65, 66. And a spring 67 for urging the slider 53 toward the positioning pin 62.

<Description of processing method (see FIGS. 4 to 6)>
First, the workpiece W is placed on the rotary table 12B. In addition, after the spindle mounting portion 55 of the machining tool 50A is mounted on the spindle 17 of the machine tool, the tap 56A is positioned in a prepared hole that has been previously machined into the workpiece W.
As shown in FIG. 4, since the axis of the tap 56A coincides with the axis of the main shaft mounting portion 55, that is, the axis of the main shaft 17, the main shaft 17 is simply positioned at the center position of the pilot hole H. Good. Specifically, the X table 12A is moved in the X-axis direction, and the saddle 15 is moved in the Y-axis direction to position the main shaft 17 at the center position of the lower hole H. At this position, the main shaft 17 is moved to the Z-axis. The tip of the tap 56A is inserted and positioned in the lower hole H of the workpiece W.

Subsequently, as shown in FIG. 5, in a state where the tap 56 </ b> A is fixed to the prepared hole H, the tool body 51 is slid by a predetermined distance with respect to the slider 53. That is, the main shaft 17 is moved by a predetermined distance in the Y-axis direction.
After that, C-axis control is performed while causing the spindle mounting portion 55 to perform a circular motion with the distance from the center to the spindle mounting portion 55 as a radius, with the tap 56A as the center, so that the tap 56A rotates at the positioning position. At the same time, the machining tool 50A per rotation is sent in the axial direction of the tap 56A and by one pitch of the tap (female thread machining portion 59A) (see FIG. 6). Specifically, while moving the X table 12A in the X-axis direction and moving the saddle 15 in the Y-axis direction, the C-axis control (rotation angle control of the main shaft 17) is performed to rotate the tap 56A. At the same time, the ram 16 is fed in the Z-axis direction and by one pitch of the female thread machining portion 59A per rotation. That is, the normal helical control operation is performed.
Then, since the tap 56 </ b> A is rotated along the pilot hole H and sent in the axial direction, the female thread is processed on the workpiece W.
After that, the main shaft 17 is operated reversely to the above, and the tap 56A is pulled out from the female screw.

  Therefore, according to the first embodiment, after the spindle mounting portion 55 is mounted on the spindle 17, when the tap 56A is positioned in the work hole H, the axis of the tap 56A is the axis of the spindle mounting portion 55, that is, the spindle. Therefore, the tap 56 </ b> A can be positioned in the lower hole H of the workpiece only by positioning the main shaft 17 at the center position of the lower hole H. Therefore, the tap 56A can be easily positioned in the work hole H.

  Further, after the tool body 51 is slid by a predetermined distance with respect to the slider 53 with the tap 56A fixed to the pilot hole H, the spindle mounting portion 55 is moved in a circle around the tap 56A to rotate the tap 56A. In addition, when the tap 56A is fed in the axial direction of the tap 56A per rotation and by one pitch of the tap 56A, the tap 56A is fed in the axial direction while rotating along the pilot hole H, so that a female screw is processed on the workpiece. At this time, since the force that causes the main shaft 17 to move circularly about the tap 56A may be small, even if the ability of the motor that rotates the main shaft 17 is small, it is possible to efficiently process a relatively large diameter female screw. it can.

  Further, since the positioning pin 62 for positioning the slider 53 with respect to the tool main body 51 is provided at the reference position where the axis of the tap 56A coincides with the axis of the main shaft mounting portion 55, the shaft of the tap 56A is connected to the main shaft mounting portion 55. It is possible to easily match the axis, that is, the axis of the main shaft 17. Therefore, the tap 56A can be easily positioned in the work hole H.

  Further, since the urging means 64 for urging the slider 53 to the reference position is provided, when the tap 56A is pulled out from the lower hole H of the workpiece, the urging means 64 automatically returns the slider 53 to the reference position. The Therefore, the operator does not have to slide the slider 53 with respect to the tool main body 51 so that the axis of the tap 56A coincides with the axis of the main shaft mounting portion 55, so that the machining operation can be performed efficiently. .

Further, the slider 53 is provided with a blade attachment portion 54 for attaching the tap 56A to the slider 53 in a replaceable manner. Therefore, if the blade portion attachment portion 54 is replaced with a tap 56A having a different diameter, 1 With the two processing tools 50A, it is possible to process female threads having different diameters.
Further, when the control device 30 drives and controls the rotation drive mechanism and the linear drive mechanism, the internal thread machining can be performed on the workpiece W by the machining tool 50A attached to the main shaft 17. Therefore, more efficient processing can be realized.

[Second Embodiment (see FIG. 7)]
FIG. 7 is a cross-sectional view showing a processing tool 50B used in the second embodiment. In the description of the second embodiment, the same components as those in the first embodiment are denoted by the same reference numerals, and the description thereof is omitted.
The processing tool 50B of the second embodiment is a processing tool for processing a male screw on the shaft portion of the workpiece W, and a die 56B for processing the male screw is used instead of the tap 56A of the processing tool 50A of the first embodiment. It differs in that it is attached and a circular hole 43B with counterbore for accommodating the die 56B is provided in place of the square hole 43A of the blade attachment portion 54.
In the die 56B, a plurality of cut grooves are formed along the axial direction at fixed angular intervals on the inner peripheral surface, and a male blade machining die blade portion 59B is formed at a portion sandwiching the cut grooves. The male screw machining die blade portion 59B is formed with a female screw machining blade having the same shape as the male screw to be machined in a spiral shape. Here, the outer diameter of the male thread machining die blade portion 59B is about 30 mm or more, but is not limited thereto.

In the case of the second embodiment, similarly to the first embodiment, the die 56B of the processing tool 50B is positioned on the shaft portion of the workpiece, and in this state, the tool body 51 is slid by a predetermined distance with respect to the slider 53. After that, the spindle mounting portion 55 is rotated around the die 56B from the center to the spindle mounting portion 55 while performing a circular motion with a radius as the distance, and the die 56B is rotated and processed per rotation. When the tool 50B is fed in the axial direction of the die 56B and by one pitch of the die 56B, the die 56B is fed in the axial direction while rotating along the shaft portion, so that a male screw is processed on the workpiece.
Therefore, even when the ability of the motor for rotating the main shaft 17 is small, the force for circularly moving the main shaft mounting portion 55 around the die 56B may be small, so that a relatively large-diameter male screw is efficiently processed. Can do.

[Third Embodiment (see FIG. 8)]
FIG. 8 is a perspective view showing a processing tool 50C used in the third embodiment. In the description of the third embodiment, the same components as those of the first embodiment are denoted by the same reference numerals, and the description thereof is omitted.
The machining tool 50C of the third embodiment is a machining tool for finishing the inner surface of the prepared hole H of the workpiece W. Instead of the tap 56A of the machining tool 50A of the first embodiment, a reamer 56C for finishing the inner surface. The point that is attached is different.
The reamer 56 </ b> C includes a shank portion 57, a square shaft 58 formed at the upper end of the shank portion 57 and engaged with the square hole 43 </ b> A of the slider 53, and a finish processing portion 59 </ b> C integrally formed at the lower end of the shank portion 57. It consists of and. The finishing portion 59C is slightly larger in diameter than the prepared hole to be machined, and a plurality of cut grooves are formed along the axial direction at fixed angular intervals, and has a blade on one side of the cut groove. Here, the outer diameter of the finished processed portion 59C is about 30 mm or more, but is not limited thereto.

In the case of the third embodiment, similarly to the first embodiment, the reamer 56C of the processing tool 50C is positioned in the workpiece lower hole H, and in this state, the tool body 51 is slid by a predetermined distance with respect to the slider 53. . After that, the spindle mounting portion 55 is rotated around the reamer 56C with a radius of the distance from the center to the spindle mounting portion 55 while performing C-axis control to rotate the reamer 56C and the machining tool 50C. When the reamer 56C is fed in the axial direction, the reamer 56C is fed in the axial direction while rotating along the lower hole, so that the inner surface of the lower hole of the workpiece is finished.
Accordingly, even when the motor capability of rotating the spindle 17 is small, the force that causes the spindle mounting portion 55 to move circularly around the reamer 56C may be small, so that it is efficient to finish the inner surface of a relatively large diameter hole. Can be done.

<Modification (FIG. 9)>
It should be noted that the present invention is not limited to the above-described embodiments, and modifications, improvements, and the like within the scope that can achieve the object of the present invention are included in the present invention.
In each embodiment, the main shaft mounting portion 55 is fixed to the tool main body 51. However, the main shaft mounting portion 55 may be rotatably connected to the tool main body 51. For example, as shown in FIG. 9, a support shaft 55A may be integrally formed on the upper surface of the tool body 51, and the main shaft mounting portion 55 may be rotatably attached to the support shaft 55A.
In each of the above-described embodiments, the main shaft 17 is C-axis controlled around the tap 56A, the die 56B, and the reamer 56C with the distance from the center to the main shaft mounting portion 55 as a radius, and the tap 56A, the die 56 are controlled. 56B and reamer 56C are rotated. If the structure shown in FIG. 9 is used, the main shaft 17 is tapped by moving the X table 12A in the X-axis direction and moving the saddle 15 in the Y-axis direction. Since the tap 56A, the die 56B, and the reamer 56C can be rotated by simply making a circular motion with the radius from the center to the spindle mounting portion 55 as a center, the tap 56A, the die 56B, and the reamer 56C can be rotated. Can be
In the structure shown in FIG. 9, if the support shaft 55A is provided with a notch and the notch is locked, the case where the C-axis control is performed and the case where the C-axis control is not performed can be combined.

  In each embodiment, while the tap 56A, the die 56B, and the reamer 56C are rotated in one direction, the internal thread and the external thread of the workpiece W are processed, and the inner surface finish processing of the prepared hole is performed. Every time the depth is reached, if the tap 56A, the die 56B and the reamer 56C are processed while rotating in the opposite direction, the cut chips can be discharged.

In the first and third embodiments, the blade mounting portion 54 is composed of the square hole 43A and the set screw 44. In the second embodiment, the blade portion attaching portion 54 is composed of the circular hole 43B and the set screw 44. Not only the structure but also other configurations may be used.
For example, a square hole 43A and a circular hole 43B are provided side by side on the slider 53, and in the case of the tap 56A or reamer 56C, it engages with the square hole 43A, and in the case of the die 56B, it engages with the circular hole 43B. By doing so, it is possible to perform internal thread processing, external thread processing, and reamer processing (finishing processing) with a single processing tool.

  In each embodiment, the use of the cutting oil is not particularly mentioned. However, the cutting oil is supplied to the contact portion between the workpiece and the tap 56A, the die 56B, and the reamer 56C at all times or every constant processing. By doing so, the cutting surface can be finished with high accuracy.

In each embodiment, the machine tool main body 10 is provided so as to be rotatable about a vertical axis (C axis), and a rotary table 12B on which a work as a workpiece is placed on the upper surface. An X-axis linear drive mechanism for moving the workpiece, a rotational drive source for rotationally driving the main shaft 17 to which the processing tools 50A, 50B, and 50C are attached, a Z-axis direction parallel to the rotational axis (C axis) of the rotary table 12B and the main shaft 17 However, the present invention is not limited to this. However, the present invention is not limited to this.
For example, the table on which the workpiece is placed has a structure that does not rotate, and the table and the spindle 17 to which the processing tools 50A, 50B, and 50C are attached move relative to each other in the X-axis direction, the Y-axis direction, and the Z-axis direction. It may be a machine tool provided with a mechanism.

  Furthermore, the machining method of the present invention is applied to a horizontal boring machine or horizontal machining center with a horizontal main shaft, and female thread machining, male screw machining, and reamer machining are performed in these horizontal boring machine and horizontal machining center. You can also.

  INDUSTRIAL APPLICABILITY The present invention can be used for machining a work that requires female thread machining, male thread machining, and reamer machining.

10 ... Machine tool body,
12B ... Rotary table,
17 ... Main shaft 22 ... Y-axis linear drive mechanism (linear movement mechanism),
23 ... Z-axis linear drive mechanism (linear movement mechanism),
30 ... Control device,
50A ... Female thread machining tool,
50B ... Male thread machining tool,
50C ... Internal finishing tool,
51 ... Tool body,
53. Slider,
54 ... Blade mounting part,
55 ... Spindle mounting part,
56A ... Tap,
56B ... Dice,
56C ... reamer,
61 ... positioning mechanism,
64: biasing means.

Claims (7)

A machining tool for machining a screw or a machining tool for finishing an inner surface of a hole,
An arm-shaped tool body extending in a direction intersecting the main axis of the machine tool;
A slider provided to be slidable in the intersecting direction with respect to the tool body,
The tool body is provided with a spindle mounting portion to be mounted on the spindle,
A machining tool, wherein the slider is provided with a tap, a die, or a reamer parallel to the axis of the main shaft mounting portion. In the processing tool according to claim 1,
A machining tool comprising a positioning mechanism for positioning the slider with respect to the tool main body at a reference position where the axis of the tap, die, or reamer coincides with the axis of the spindle mounting portion. In the processing tool according to claim 2,
A working tool comprising biasing means for biasing the slider to the reference position. In the processing tool according to claim 1,
The slider is provided with a blade attachment portion for attaching the tap, die, or reamer to the tool body so as to be replaceable. In the internal thread machining tool according to any one of claims 1 to 4,
The tap, die, or reamer has a blade diameter of 30 mm or more. In the processing method which processes a female screw to a work using the processing tool according to any one of claims 1 to 5,
Prepare a machining tool with a tap attached to the slider,
In the state in which the slider is slid with respect to the tool body at a reference position where the axis of the tap coincides with the axis of the main shaft mounting portion, the tap is inserted into a prepared hole formed in the workpiece, and positioned.
After sliding the tool body with respect to the slider by a predetermined distance with the tap fixed to the pilot hole,
The tap is rotated with the tap as a center and a circular movement having a radius from the center to the spindle mounting portion as a radius, and the processing tool is rotated in the axial direction of the tap and one pitch of the tap per rotation. While feeding one by one, machine the female thread on the workpiece,
A processing method characterized by the above. A table on which a workpiece is placed, a main shaft, a rotation drive mechanism for rotating the main shaft, and the table and the main shaft are relatively moved in an axial direction parallel to the axis of the main shaft and in an axial direction perpendicular to the axis. A machine tool body equipped with a linear drive mechanism;
A control device that drives and controls the rotation drive mechanism and the linear drive mechanism according to a machining program;
A machining tool mounted on the spindle,
As for the said processing tool, the processing tool in any one of the said Claims 1-5 is used,
A machine tool characterized by that.

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