JP2010253626A - Tool presetter - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a tool presetter for making a storage state compact. <P>SOLUTION: A rotary shaft O2 of a support member 50 is inclined by a prescribed angle θ1 in a -Z direction and inclined by a prescribed angle θ2 in a +Y direction by making a +X direction as a reference. A second arm 52 is inclined by a prescribed angle θ3 in a +Z direction and inclined by a prescribed angle θ4 in -Y direction by making the rotary shaft O2 as a reference in a detection state. By setting the prescribed angles θ1, θ2, θ3 and θ4 to the same angle, the second arm 52 becomes parallel to a XZ plane in the detection state and becomes parallel to a XY plane in the storage state. As a result, a distance between a side wall 18 in a machining chamber 12 and the second arm 52 can be reduced in the storage state. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a tool presetter used in an NC lathe.

  2. Description of the Related Art Conventionally, a tool presetter that detects the position of a cutting edge of a tool attached to a turret is known in an NC lathe that performs cutting by applying a tool while rotating a workpiece. The tool presetter described in Patent Document 1 is located in a state where it can come into contact with the cutting edge of the tool when detecting the position of the cutting edge of the tool, and is housed on the side wall side of the processing chamber when cutting the workpiece.

JP 2004-322256 A

However, since this type of tool presetter requires a space larger than the width of the arm of the tool presetter in the accommodated state accommodated on the side wall side of the processing chamber, the effective use area of the opening of the processing chamber is reduced, There has been a problem that work efficiency is lowered, such as obstructing the worker's view during work or tool replacement work.
This invention is made | formed in view of the said problem, The objective is to provide the tool presetter which makes an accommodation state compact.

According to the first aspect of the present invention, the tool presetter is connected to the support member attached to the side wall of the processing chamber, the first arm provided to be rotatable around the rotation axis of the support member, and the first arm. A second arm and a presetter sensor are included.
Here, the axis parallel to the extending direction of the table on which the turret is installed is the X axis, the axis parallel to the rotation axis of the chuck is the Z axis, and the X axis and the axis perpendicular to the Z axis are the Y axis. A direction from the opening side of the chamber toward the back side is defined as + X direction, a direction from the Z axis toward the turret side from the chuck side is defined as + Z direction, and a direction from the Y axis toward the opening side from the table side is defined as + Y direction.
The rotation axis of the support member is inclined by a predetermined angle θ1 in the −Z direction with respect to the + X direction, and is inclined by a predetermined angle θ2 in the + Y direction. On the other hand, the second arm is inclined at a predetermined angle θ3 in the + Z direction and is inclined at a predetermined angle θ4 in the −Y direction with reference to the rotation axis in the detection state.

  Since the angle formed by the first arm and the second arm is an angle obtained by adding a right angle and a predetermined angle θ3, the distance between the connecting portion of the first and second arms and the chuck can be reduced in the accommodated state. . Thereby, the space between a chuck | zipper and opening can be used effectively and a tool presetter can be attached.

By setting the predetermined angle θ1 and the predetermined angle θ3 to corresponding angles, and setting the predetermined angle θ2 and the predetermined angle θ4 to corresponding angles, the second arm can be provided substantially parallel to the XZ plane in the detection state. it can. Then, the predetermined angle θ1 and the predetermined angle θ4 are set to corresponding angles, and the predetermined angle θ2 and the predetermined angle θ3 are set to corresponding angles, so that the second arm is provided substantially parallel to the XY plane, The distance between the second arm and the side wall can be reduced. Accordingly, the accommodation state of the tool presetter becomes compact, and the effective use area of the opening of the machining chamber is ensured, so that the working efficiency of the NC lathe can be improved.
The predetermined angles θ1, θ2, θ3, and θ4 correspond to the distance between the chuck and the opening, and 0 <θ1 <90 (°), 0 <θ2 <90 (°), 0 <θ3 <90 (°), It is set in the range of 0 <θ4 <90 (°).

According to the invention of claim 2, the first arm is composed of a base portion and an arm portion,
In the detection state, the arm portion has a surface on the upper side in the vertical direction tilted clockwise by a predetermined angle θ4 with respect to the rotation axis when viewed from the + Z direction to the −Z direction. For this reason, the distance between the surface on the upper side in the vertical direction in the detection state of the arm portion and the side wall provided with the chuck can be reduced in the accommodated state.

The perspective view of NC lathe to which the tool presetter by one Embodiment of this invention is applied. The principal part sectional drawing of NC lathe to which the tool presetter by one Embodiment of this invention is applied. The principal part sectional drawing of NC lathe to which the tool presetter by one Embodiment of this invention is applied. The principal part sectional drawing of NC lathe to which the tool presetter by one Embodiment of this invention is applied. The principal part sectional drawing of NC lathe to which the tool presetter by one Embodiment of this invention is applied. The perspective view of NC lathe to which the tool presetter of the comparative example is applied. Sectional drawing of the principal part of NC lathe to which the tool presetter of the comparative example is applied. Sectional drawing of the principal part of NC lathe to which the tool presetter of the comparative example is applied. Sectional drawing of the principal part of NC lathe to which the tool presetter of the comparative example is applied.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
A tool presetter according to an embodiment of the present invention is used in an NC lathe and detects the position of a cutting edge of a tool mounted on a turret.
First, the NC lathe will be described. As shown in FIG. 1, the NC lathe 10 has a processing chamber 12 for cutting a workpiece inside a main body 11. On the outer wall of the main body 11 is provided an operation panel 13 for numerically controlling the machining of the workpiece.
The bottom wall 14 of the processing chamber 12 is inclined, for example, 15 ° upward in the vertical direction from the opening 15 side to the back side of the processing chamber 12. On the opening 15 side of the bottom wall 14, a bucket 16 is provided for storing metal generated by cutting and lubricating oil for cutting.
A slide door 17 is provided in the opening 15 of the processing chamber 12. When the workpiece is machined, the slide door 17 moves in the + Z direction and shuts off the machining chamber 12 and the outside air.

  A chuck 20 is provided on the side wall 18 of the processing chamber 12. The chuck 20 has a cylindrical cylindrical portion 21 that protrudes from the side wall 18 toward the processing chamber 12, and three pawls 22 inside the cylindrical portion 21. The chuck 20 holds the workpiece by the movement of the pawl 22 in the radial direction and the axial direction. Further, the chuck 20 rotates the workpiece by being driven to rotate about the rotation axis O1.

As shown in FIG. 5, a turret 30 is provided on the side opposite to the side wall where the chuck of the processing chamber 12 is provided. The turret 30 has a pedestal part 31, a turning part 32, and a holder part 33.
The pedestal portion 31 is installed on a rail 34 provided in parallel with the bottom wall 14. The rail 34 extends from the opening 15 side to the back side, and the pedestal portion 31 is movable on the rail 34.
The turning part 32 is formed in a substantially cylindrical shape, and is provided on the side opposite to the rail 34 of the pedestal part 31. A plurality of holder portions 33 are provided radially in the radially outward direction of the swivel portion 32, and each has a tool 40 for cutting a workpiece. The holder part 33 is movable in the axial direction of the turning part 32. It should be noted that the axial direction of the swivel unit 32 and the rotation axis O1 of the chuck are the same direction. As the turret 30 moves along the X axis and the Z axis, the tool 40 comes into contact with the workpiece, and cutting is performed.

Next, the tool presetter 1 will be described with reference to FIGS.
The tool presetter 1 includes a support member 50, a first arm 51, a second arm 52, a presetter sensor 53, and the like.
The support member 50 is formed in a substantially U-shaped cross section from the first wall 501 on the opening 15 side, the second wall 502 on the back side, and the third wall 503 connecting the first wall 501 and the second wall 502. And attached to the side wall 18 on which the chuck 20 is provided.
The support member 50 is formed such that the first wall 501 and the second wall 502 are inclined by a predetermined angle θ1 in the + X direction with reference to the + Z direction. In addition, the support member 50 has a predetermined upper left surface with respect to the X axis as viewed from the + Z direction so that the second wall 502 is on the + Y side with respect to the first wall 501. The angle θ2 is inclined and attached to the side wall 18. Accordingly, the rotation axis O2 of the support member 50 is inclined by the predetermined angle θ1 in the −Z direction with respect to the + X direction and is inclined by the predetermined angle θ2 in the + Y direction.
A tapered spacer may be provided between the third wall 503 and the side wall 18 so that the first wall 501 and the second wall 502 are inclined by a predetermined angle θ1 in the + X direction with respect to the + Z direction.

The first arm 51 includes a base portion 511 provided between the first wall 501 and the second wall 502 of the support member 50 and an arm portion 512 that protrudes from the base portion 511 toward the turret 30 side.
The base 511 is formed in a substantially rectangular parallelepiped shape, and is provided to be rotatable around the rotation axis O <b> 2 of the support member 50.
The arm part 512 is formed in a prismatic shape and extends perpendicularly to the rotation axis O2 of the support member 50. The arm portion 512 is connected to the base portion 511 with an upper surface 513 that is on the upper side in the vertical direction in the detection state inclined at a predetermined angle θ4 clockwise with respect to the rotation axis O2.

  The second arm 52 is formed in a prismatic shape, is connected to the end of the arm 512 opposite to the base 511, and is provided substantially in parallel with the X axis in the detection state. The second arm 52 is inclined at a predetermined angle θ3 in the + Z direction with respect to the rotation axis O2 in the detection state. Further, the second arm 52 is connected to the arm portion 512 so that the upper surface 521 which is the upper side in the vertical direction of the second arm 52 in the detection state is flush with the upper surface 513 of the arm portion 512. As a result, the second arm 52 is inclined by a predetermined angle θ4 in the −Y direction with respect to the rotation axis O2 in the detection state. In the present embodiment, the predetermined angles θ1, θ2, θ3, and θ4 are set to substantially the same angle. Therefore, the upper surface 513 of the arm part 512 and the upper surface 521 of the second arm 52 are substantially parallel to the XZ plane in the detection state and substantially parallel to the XY plane in the accommodated state.

The presetter sensor 53 is formed in a substantially cylindrical shape, and has four contact sensors 531 in the radial direction. The presetter sensor 53 is attached to the end of the second arm 52 opposite to the first arm 51 so that the axial direction is perpendicular to the upper surface 521 of the second arm 52. For this reason, the plane formed by the four contact sensors 531 is parallel to the XZ plane. Thereby, the presetter sensor 53 can accurately detect the position of the cutting edge of the tool moving on the XZ plane by the movement of the turret.
As shown by a dotted line A, the presetter sensor 53 is accommodated in a cylindrical pot 19 provided on the side wall 18 in the accommodated state. The pot 19 is formed in a cylindrical shape, and an end portion in the axial direction is inserted into a hole provided in the side wall 18. The pot 19 protects the presetter sensor 53 from the dust generated during cutting and the lubricating fluid for cutting.

Next, a tool presetter of a comparative example will be described with reference to FIGS.
Configurations substantially the same as those of the embodiment of the present invention are denoted by the same reference numerals and description thereof is omitted. The tool presetter 2 of the comparative example includes a support member 60, a first arm 61, a second arm 62, a third arm 63, a presetter sensor 53, and the like.
The support member 60 is attached to the side wall 18 with the rotation axis O3 substantially parallel to the X axis.

The first arm 61 includes a base portion 611 and an arm portion 612.
In the arm portion 612, an upper surface 613 that is on the upper side in the vertical direction in the detection state is provided substantially parallel to the rotation axis O3.
The second arm 62 extends in the −Y direction from the end of the arm 612 opposite to the base 611 in the detection state. The third arm 63 extends in the + X direction from the end of the second arm 62 opposite to the arm portion 612.

  As indicated by the dotted line B, the tool presetter 2 of the comparative example has the second arm 62 and the third arm 63 projecting from the side wall 18 in the + Z direction in the accommodated state. For this reason, the effective use area | region of the opening 15 of the process chamber 12 becomes small. Therefore, the work efficiency is lowered, such as blocking the worker's field of view when the work or tool 40 is replaced.

On the other hand, in the present embodiment, the predetermined angles θ1, θ2, θ3, and θ4 are set at substantially the same angle, so that the upper surface 513 of the first arm 51 and the upper surface 521 of the second arm 52 are in the detection state. And substantially parallel to the XZ plane and in the accommodated state substantially parallel to the XY plane. In addition, since the angle formed by the first arm 51 and the second arm 52 is a right angle plus a predetermined angle θ3, the distance between the connecting portion of the first and second arms and the chuck 20 is reduced in the accommodated state. can do. Thereby, the space between a chuck | zipper and opening can be used effectively and the accommodation state of the tool presetter 1 can be made compact. Therefore, the working efficiency of the NC lathe is improved by reducing the amount of protrusion in the + Z direction of the first and second arms 51 and 52 from the side wall 18 and increasing the effective use area of the opening 15 of the machining chamber 12. be able to.
Furthermore, in the present embodiment, the distance between the pot 19 and the opening 15 is smaller than that of the comparative example by setting the predetermined angle θ2. For this reason, cleaning in the pot 19 and maintenance of the presetter sensor 53 can be easily performed.

(Other embodiments)
In the embodiment described above, the first arm and the second arm are formed in a prismatic shape. On the other hand, the first arm and the second arm may be formed in a columnar shape.
In the above-described embodiment, the first arm and the second arm are connected in a square shape. On the other hand, the first arm and the second arm may be connected in a curved shape.
As described above, the present invention is not limited to the above-described embodiment, and can be applied to various embodiments without departing from the gist thereof.

  1: Tool presetter, 10: NC lathe, 11: Main body, 12: Processing chamber, 15: Opening, 18: Side wall, 20: Chuck, 30: Turret, 34: Rail, 40: Tool, 50: Support member, 51 : First arm 52: Second arm 53: Presetter sensor

Claims (2)

A main body having a processing chamber for cutting a workpiece;
A chuck that is provided on a side wall of the processing chamber and holds and rotates a workpiece;
A table provided on the opposite side of the processing chamber from the side wall where the chuck is provided, and extending from the opening side of the processing chamber toward the back side of the processing chamber;
A turret mounted with a tool for cutting a workpiece, provided so as to be movable on the table and movable in the rotation axis direction of the chuck;
A tool presetter for detecting the position of the cutting edge of a tool used in an NC lathe equipped with the turret,
A support member attached to the side wall on which the chuck is provided;
A first arm provided to be rotatable around a rotation axis of the support member;
A second arm connected to an end of the first arm opposite to the support member;
A presetter sensor provided at an end of the second arm opposite to the first arm,
An axis parallel to the extending direction of the table is an X axis, an axis parallel to the rotation axis of the chuck is a Z axis, an axis perpendicular to the X axis and the Z axis is a Y axis, and the X axis is from the opening side to the back side. The direction toward the + X direction, the Z axis from the chuck side to the turret side as the + Z direction, and the Y axis from the table side to the opening side as the + Y direction,
The rotation axis of the support member is inclined by a predetermined angle θ1 in the −Z direction with respect to the + X direction and is inclined by a predetermined angle θ2 in the + Y direction.
The second arm is inclined by a predetermined angle θ3 in the + Z direction with respect to the rotation axis and in a −Y direction in a detection state in which the presetter sensor detects the position of the cutting edge of the tool mounted on the turret. The angle θ4 is inclined and provided substantially parallel to the XZ plane.
The predetermined angles θ1, θ2, θ3, and θ4 are set to angles corresponding to each other, and in the accommodated state in which the presetter sensor is accommodated on the side wall side where the chuck is provided, the second arm and the side wall Tool presetter characterized by reducing the distance. The first arm includes a base portion and an arm portion,
2. The arm portion according to claim 1, wherein when viewed from the + Z direction to the -Z direction in the detection state, the upper surface of the arm portion is inclined clockwise by the predetermined angle θ4 with respect to the rotation axis. Tool presetter described in 1.

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