JP2017077622A - Turning process device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a turning process device which securely holds and fixes a cutting tool at a desired angle position.SOLUTION: Tool attachment means 38 for attaching a cutting tool 40 to a tool attachment part 36 of a turret 34 includes: an attachment body attached to the turret; a tool attachment member which is rotatably attached to the attachment body over a predetermined angle range; and angle position adjustment means 46 for rotating the tool attachment member. The angle position adjustment means 46 includes: first and second eccentric pins 82, 84 which are rotatably attached to the attachment body. The first eccentric pin 82 is configured so that the first eccentric pin 82 is rotated in a predetermined direction to cause a first eccentric action part 88 to act on a part of the tool attachment member, and the second eccentric pin 84 is configured so that the second eccentric pin 84 is rotated in an opposite direction of the predetermined direction to cause a second eccentric action part 90 to act on another part of the tool attachment member.SELECTED DRAWING: Figure 5

Description

  The present invention relates to a cutting apparatus for cutting a workpiece.

  For example, a cutting apparatus such as an NC lathe has been proposed that can perform skiving on a workpiece using a skiving cutting tool. In such a cutting apparatus, the tool attachment means for attaching the cutting tool is improved, and the skiving cutting tool is detachably attached to the tool attachment portion of the turret, for example, via the tool attachment means. (For example, refer to Patent Document 1).

  The tool attachment means includes a tool holder attached to the tool attachment portion of the turret, a cutting tool attached to the tool holder, and an angle adjustment means for adjusting the relative angle of the tool holder with respect to the tool attachment portion. Yes. More specifically, the mounting surface of the tool mounting portion is provided with a mounting recess, and the tool holder is provided with a mounting projection. By inserting the mounting projection into the mounting recess, the tool holder is attached to the tool mounting surface. Is pivotally attached to. Further, the angle adjusting means includes an eccentric pin, the eccentric pin is rotatably attached to the mounting surface, and the eccentric action portion of the eccentric pin is freely rotatable in a long hole provided in the tool holder. It can be moved freely.

  Since it is configured in this way, when the eccentric pin is rotated in a predetermined direction (or a direction opposite to the predetermined direction), the eccentric action part acts on one side surface (or other side surface) of the long hole, As a result, the tool holder is rotated clockwise (or counterclockwise) about the mounting protrusion, and thus the relative angular position of the turret with respect to the tool mounting portion, in other words, relative to the workpiece held by the chuck means. The processing position of the cutting tool can be adjusted.

Japanese Patent No. 4092019

  However, in the cutting apparatus provided with the above-described tool attachment means, since there is one eccentric pin for adjusting the angular position of the tool holder, it is difficult to hold and fix the tool holder at a desired angular position, When a large machining load is generated, the angular position of the tool holder (in other words, the machining position of the cutting tool) may be shifted.

  An object of the present invention is to provide a cutting apparatus capable of reliably holding and fixing a cutting tool at a desired angular position.

A cutting apparatus according to claim 1 of the present invention includes a main shaft portion for rotatably supporting the main shaft, chuck means for removably holding a workpiece and rotating integrally with the main shaft, In a cutting apparatus comprising: a turret having a tool attachment portion for attaching a cutting tool; and tool attachment means for attaching the cutting tool to the tool attachment portion of the turret.
The tool attachment means includes an attachment main body attached to the tool attachment portion of the turret, a tool attachment member attached to the attachment main body so as to be rotatable over a predetermined angle range, and the tool attachment to the attachment main body. An angular position adjusting means for relatively rotating the member, the cutting tool is attached to the tool holding portion of the tool attachment member,
The angular position adjusting means includes first and second eccentric pins rotatably mounted on the mounting body, and the first eccentric pin is rotated in a predetermined direction and has a first eccentric action. And the second eccentric pin is rotated in a direction opposite to the predetermined direction, and the second eccentric acting portion is configured to act on the tool mounting member. It is comprised so that it may act on the other part, By this, the relative angular position of the said tool attachment member with respect to the said attachment main body is adjusted, It is characterized by the above-mentioned.

In the cutting apparatus according to claim 2 of the present invention, the tool attachment member is provided with first and second receiving holes corresponding to the first and second eccentric pins, and the first The first eccentric action part of the eccentric pin is located in the first receiving hole of the tool attachment member, and the second eccentric action part of the second eccentric pin is the tool attachment member. Located in the second receiving hole,
By rotating the first eccentric pin in the predetermined direction, the first eccentric action part acts on the inner side surface of the tool mounting member outside the first receiving hole, and thereby the first eccentric pin The angle of one side of the tool mounting member is positioned by the action of the pin, the second eccentric pin is rotated in the direction opposite to the predetermined direction, and the second eccentric working part is the core pin of the tool mounting member. It acts on the inner side surface outside the second receiving hole, whereby the angle on the other side of the tool mounting member is positioned by the action of the second eccentric pin.

According to a third aspect of the present invention, there is provided a cutting apparatus comprising: a main shaft portion for rotatably supporting the main shaft; and chuck means for rotating integrally with the main shaft while detachably holding a workpiece. A cutting device comprising: a turret having a tool attachment portion for attaching a cutting tool; and a tool attachment means for attaching the cutting tool to the tool attachment portion of the turret.
The tool attachment means includes an attachment main body attached to the tool attachment portion of the turret, a tool attachment member attached to the attachment main body so as to be rotatable over a predetermined angle range, and the tool attachment to the attachment main body. An angular position adjusting means for relatively rotating the member, the cutting tool is attached to the tool holding portion of the tool attachment member,
The angular position adjusting means includes first and second eccentric pins rotatably attached to the tool mounting member, and the first eccentric pin is rotated in a predetermined direction and the first eccentric pin is rotated. The action part is configured to act on a part of the tool mounting part of the turret, and the second eccentric pin is rotated in a direction opposite to the predetermined direction, so that the second eccentric action part is It is configured to act on the other part of the tool mounting part of the turret, whereby the relative angular position of the tool mounting member with respect to the mounting body is adjusted.

In the cutting device according to claim 4 of the present invention, the tool attachment portion of the turret is provided with first and second attachment portions at a predetermined interval, and the attachment of the tool attachment means is performed. The main body is attached over the first and second attachment portions, and the first eccentric action portion of the first eccentric pin is disposed inside the first attachment portion, and the second eccentric pin has the first eccentric portion. The second eccentric action part is disposed inside the second attachment part,
By rotating the first eccentric pin in the predetermined direction, the first eccentric acting part acts on the inner surface of the first attaching part, and thereby the tool attaching is performed by the action of the first eccentric pin. The angle on one side of the member is positioned, the second eccentric pin is rotated in the direction opposite to the predetermined direction, and the second eccentric acting portion acts on the inner surface of the second mounting portion, thereby The angle on the other side of the tool mounting member is positioned by the action of the second eccentric pin.

  Furthermore, in the cutting apparatus according to claim 5 of the present invention, the reciprocating table is supported by the bed body via the first guide support mechanism so as to be movable in the horizontal Z-axis direction, and the second guide support is supported by the reciprocating table. The lower support table is supported by a mechanism so as to be movable in the horizontal front-rear direction, and the upper support table is movable by the lower support table through the third guide support mechanism in the X-axis direction inclined downward toward the front. A turret tool post is attached to the upper support table, the turret is rotatably supported by the turret tool post, and the lower support table is formed by the second guide support mechanism and the third guide support mechanism. According to a combination of movements, it is moved in the Y-axis direction perpendicular to the X-axis.

  According to the cutting apparatus of the first aspect of the present invention, the tool attachment means for attaching the cutting tool is attached to the tool attachment portion of the turret, and is rotatably attached to the attachment body. Since the tool mounting member and the angular position adjusting means for adjusting the angular position of the tool mounting member are provided, the tool mounting member is attached to the mounting body (ie, the tool mounting portion of the turret) by the angular position adjusting means. The relative angular position (in other words, the machining position of the cutting tool) can be adjusted, whereby the machining position of the cutting tool can be adjusted, and the angular position of the tool mounting member with respect to the mounting body is maintained. The turret can be attached to or removed from the tool attachment. Further, the angular position adjusting means includes first and second eccentric pins rotatably attached to the mounting body, and the first eccentric pin is rotated in a predetermined direction so that the first eccentric action portion is The second eccentric pin is configured to act on a part of the tool mounting member, and the second eccentric pin is rotated in a direction opposite to the predetermined direction so that the second eccentric acting part acts on the other part of the tool mounting member. Since the first and second eccentric pins are configured, the first and second eccentric pins are positioned by acting on the tool mounting member in a direction extending to both sides, and thus the tool mounting member is securely held and fixed at a desired angular position. Can do.

  Moreover, according to the cutting apparatus of Claim 2 of this invention, the 1st eccentric action part of the 1st eccentric pin is received in the 1st receiving hole of a tool attachment member, Since the second eccentric action part is received in the second receiving hole of the tool mounting member, the first eccentric action part is located outside the first receiving hole by rotating the first eccentric pin in a predetermined direction. By acting on the inner surface, the positioning of one side of the tool mounting member is performed, and the second eccentric pin is rotated in the direction opposite to the predetermined direction so that the second eccentric acting portion is outside the second receiving hole. The other side of the tool mounting member is positioned by acting on the inner surface of the tool, thus utilizing the first and second eccentric pins on the tool mounting member side and the first and second receiving holes on the mounting body side. Thus, the tool mounting member can be securely held and fixed at a desired angular position.

  According to the third aspect of the present invention, since the cutting device has the same basic configuration as the above-described tool mounting means, the mounting body (that is, the tool of the turret) is adjusted by the angular position adjusting means. The relative angular position of the tool attachment member relative to the attachment portion (in other words, the processing position of the cutting tool) can be adjusted. Further, the angular position adjusting means includes first and second eccentric pins rotatably attached to the tool mounting member, and the first eccentric pin is rotated in a predetermined direction and the first eccentric action portion. Acts on a part of the tool mounting portion of the turret, and the second eccentric pin is rotated in a direction opposite to the predetermined direction so that the second eccentric working portion is attached to the other portion of the tool mounting portion. In this case as well, the first and second eccentric pins are positioned by acting on the tool mounting portion of the turret in such a manner as to expand on both sides, and thus the tool mounting member is positioned at the desired angular position. Can be securely held and fixed.

  Further, according to the cutting device of claim 4 of the present invention, the first eccentric pin is disposed inside the first mounting portion in the tool mounting portion of the turret, and the second eccentric pin is Since it is arranged inside the second mounting portion in the tool mounting portion, the first eccentric acting portion acts on the inner surface of the first mounting portion by rotating the first eccentric pin in a predetermined direction, Positioning of the tool mounting member on one side is performed, and the second eccentric pin is rotated in the direction opposite to the predetermined direction so that the second eccentric acting portion acts on the inner surface of the second mounting portion. Positioning of the other side of the member is performed, and thus the tool mounting member can be reliably positioned at a desired angular position by using the first and second eccentric pins on the tool mounting member side and the first and second mounting portions on the turret side. Can be held and fixed.

  Furthermore, in the cutting apparatus according to claim 5 of the present invention, the reciprocating table is supported by the bed body via the first guide support mechanism so as to be movable in the horizontal Z-axis direction, and the second guide support is supported by this reciprocating table. The lower support table is supported by the mechanism so as to be movable in the horizontal front-rear direction, and the upper support table is movable by the lower support table through the third guide support mechanism in the X-axis direction inclined downward. Since the turret tool post is attached to the upper support table supported in this manner, the tool attachment portion of the tool attachment means is relative to the attachment body about the swivel axis extending in the Z-axis direction. When the angle of the cutting tool attached to the tool mounting portion is adjusted, the angle of the cutting blade of the cutting tool attached to the tool attachment portion is adjusted around the Z axis and also around the Y axis. It can be angular adjusted in a state suitable for blade skiving.

The front view which shows simply one Embodiment of NC lathe as an example of the cutting apparatus according to this invention. The perspective view which shows a part of turret in the NC lathe of FIG. The front view which shows the tool attachment means attached to the tool attachment part of the turret of FIG. 2, and its vicinity. Sectional drawing by the IV-IV line in FIG. Explanatory drawing for demonstrating angle position adjustment of the tool attachment member with respect to the attachment main body of a tool attachment means. The front view which shows a part of turret to which the deformation | transformation form of a tool attachment means is applied. Sectional drawing by the VII-VII line in FIG. The perspective view which shows simply other embodiment of NC lathe as an example of the cutting processing apparatus according to this invention. The front view which looked at the NC lathe of FIG. 8 from the front. The left view which looked at the NC lathe of FIG. 8 from the left side. The elements on larger scale which show a part of turret of NC lathe of FIG. 8 seeing from a Z-axis direction. FIG. 11 is a partially enlarged view showing a part of the turret in FIG. 10 as viewed from the Y-axis direction.

  Hereinafter, an embodiment of an NC lathe as an example of a cutting apparatus according to the present invention will be described with reference to the accompanying drawings. In this embodiment, the description is applied to a 2-axis (2-spindle) NC lathe, but the present invention is similarly applied to other cutting devices such as a 1-axis (1-spindle) NC lathe and a normal lathe. be able to.

  In FIG. 1, an NC lathe shown as an example of a cutting apparatus includes a lathe body 2 (which constitutes a bed body) installed on a floor surface of a factory or the like, and one end portion (in FIG. 1) of the lathe body 2 The first main shaft portion 4 is provided on the left end portion. A first main shaft (not shown) is rotatably supported in the first main shaft portion 4, and a first chuck means 6 is mounted on the first main shaft, and a first workpiece to be processed into the first chuck means 6 is provided. A workpiece (not shown) is attached, and a first driving source (not shown) rotates the first spindle, the first chuck means 6 and the first workpiece in a predetermined direction. Further, a second main spindle 8 is provided at the other end of the lathe body 2 (right end in FIG. 1). A second main shaft (not shown) is rotatably supported in the second main shaft portion 8, and a second chuck means 10 is mounted on the second main shaft, and a second workpiece to be processed into the second chuck means 10. A workpiece (not shown) is attached, and the second spindle, the second chuck means 10 and the second workpiece are rotated in a predetermined direction by a second drive source (not shown).

  A reciprocating table 12 is disposed between the first main shaft portion 4 and the second main shaft portion 8, and this reciprocating table 12 reciprocates in the Z-axis direction (left-right direction in FIG. 1) via the first guide support mechanism 14. The lathe body 2 is movably supported. In addition, the reciprocating table 12 is equipped with a blade table 20, which is connected to the X-axis direction (direction perpendicular to the Z-axis direction through the second guide support mechanism 22 in FIG. It is supported by the reciprocating table 12 so as to be reciprocally movable in a direction perpendicular to the paper surface.

  In this embodiment, a blade mounting base 24 is provided on one side (left side in FIG. 1) of the blade table 20, and a processing tool 28, for example, a cutting tool, is attached to the tool mounting portion of the blade mounting base 24. The processing tool 28 is positioned to face the first chuck means 6 of the first main shaft portion 4, and performs processing on the first workpiece held by the first chuck means 6.

  A turret tool post 30 is provided on the other side (the right side in FIG. 1) of the tool table 20. The turret type tool post 30 includes a turret mounting portion 32 attached to the cutter table 20, and a turret 34 rotatably supported by the turret mounting portion 32 via a rotation shaft (not shown). A cutting tool 40 (see FIG. 2), for example, a skiving cutting tool 40 (see FIG. 2) is attached to the tool attaching portion 36 of 34 using a tool attaching means 38 described later. The cutting tool 40 is positioned opposite to the second chuck means 10 of the second main spindle 8 and performs a required cutting process on the second workpiece held by the second chuck means 10.

  Next, the tool attachment means 38 for attaching the cutting tool 40 will be described with reference to FIGS. The illustrated tool attachment means 38 includes an attachment body 42 attached to the tool attachment portion 36 of the turret 34, a tool attachment member 44 attached to the attachment body 42, and a relative angle of the tool attachment member 44 with respect to the attachment body 42. And an angular position adjusting means 46 for adjusting the position. A plurality of (in this embodiment, twelve) tool attachment portions 36 are provided on the outer peripheral portion of the turret 34 at intervals in the circumferential direction. Each tool attachment portion 36 has a pair of attachment portions 48 disposed at a predetermined interval in the circumferential direction, and a tool in which inner portions of the pair of attachment portions 48 are disposed at a portion 50 between them. It functions as an attachment portion of the attachment means 38.

  For example, the specific part 50A will be described. The first attachment for attaching one side of the tool attachment means 38 to the inner side of the outer surface of the attachment portion 48 located upstream of the specific part 50A when viewed in the clockwise direction in FIG. The inner portion of the outer surface of the attachment portion 48 that functions as the portion 52a and is located downstream of the specific portion 50A functions as a second attachment portion 52b for attaching the other side of the tool attachment means 38. In addition, the inner portion of the front end surface of the mounting portion 48 located on the upstream side of the specific portion 50A as viewed in the clockwise direction in FIG. 2 functions as the first abutting end surface 54a with which the back side of the tool mounting means 38 abuts. The inner portion of the front end surface of the mounting portion 48 located on the downstream side of the specific portion 50A functions as the second contact end surface 54b with which the other rear surface of the tool mounting means 38 contacts. In other words, the side on the downstream side of each mounting portion 48 viewed in the clockwise direction in FIG. 2 functions as the first mounting portion 52a, and the side on the upstream side in FIG. It functions as the second attachment portion 52b. Further, the downstream side portion of the front end surface of each mounting portion 48 as viewed in the clockwise direction in FIG. 2 functions as the first contact end surface 54a, and the upstream side of the front end surface as viewed in the clockwise direction in FIG. The portion functions as the second contact end face 54b.

  The attachment main body 42 of the tool attachment means 38 has a rectangular attachment main body portion 62 and an attachment support portion 64 provided at the distal end portion of the attachment main body portion 62. One end side of the attachment support portion 64 (FIG. 4 protrudes upward in FIG. 4 from the mounting main body 62, and the other end side (lower end side in FIG. 4) protrudes downward from the mounting main body 62 in FIG. Such an attachment main body 42 is attached to the outer surface of the attachment portion 48 in a state where the attachment support portion 64 is in contact with the contact end surfaces (first and second contact end surfaces 54a and 54b) of the adjacent attachment portion 48. It is done. For example, one side of the back surface of the mounting support portion 64 of the mounting body 42 is brought into contact with the first contact end surface 54a of the first mounting portion 52a (the contact end surface of the upstream mounting portion 48 as viewed in the clockwise direction in FIG. 2). And contact the other side of the back surface of the mounting support portion 64 with the second abutting end surface 54b of the second mounting portion 52b (the abutting end surface of the downstream mounting portion 48 as viewed in the clockwise direction in FIG. 2). The mounting body 42 is positioned so that one side of the mounting body 62 is placed on the outer surface (mounting surface) of the first mounting portion 52a, and the other side of the mounting body 62 is the second mounting portion. In this state, the mounting main body 62 (that is, the mounting main body 42) is mounted on the outer surface of the first and second mounting portions 52a and 52b. Attached to.

  The tool attachment member 44 is attached to the front side of the attachment support portion 64 of the attachment main body 42. In this embodiment, the tool attachment member 44 has a substantially rectangular block shape and has an outer shape substantially corresponding to the outer shape of the attachment support portion 64. A columnar support shaft 68 that protrudes toward the back side is provided at a substantially central portion of the back surface of the tool mounting member 44, and a support on the tool mounting member 44 side is provided on the front surface of the mounting support portion 64 of the mounting body 42. A circular mounting recess 70 is provided corresponding to the shaft portion 68, and the tool mounting member 44 is rotatably supported by the mounting body 42 by inserting the support shaft portion 68 into the mounting recess 70. The center axis of the shaft portion 68 is the turning center axis of the tool mounting member 44. Instead of this configuration, the mounting concave portion 70 may be provided on the tool mounting member 44 side, and the support shaft portion 68 may be provided on the mounting body 42 (mounting support portion 64) side.

  A tool mounting recess 72 that functions as a tool holding portion is provided on the front side of the tool mounting member 44, and a cutting tool 40 (for example, for skiving) is mounted on the tool mounting recess 72. The width of the tool mounting recess 72 is larger than the width of the tool main body 74 of the cutting tool 40. Accordingly, a spacer for fixing the cutting tool 40 in a space generated in the tool mounting recess 72 in a state where the cutting tool 40 is mounted. Means 76 are interposed. As such a spacer means 76, a combination of a block-like member and a shim member, a member disclosed in JP 2010-120093 A, or the like can be used.

  In this embodiment, a cover member 78 is disposed on the front surface side of the tool mounting member 44 so as to cover the tool mounting recess 72 (that is, the tool main body 74 and the spacer means 76 of the cutting tool 40). , And are attached to the tool attachment member 44 by attachment bolts 80.

  Next, the angular position adjusting means 46 will be described. The angular position adjusting means 46 includes a pair of eccentric pins, that is, first and second eccentric pins 82 and 84. The first eccentric pin 82 is disposed on one side (left side in FIGS. 3 and 5) of the lower end portion of the mounting support portion 64 of the mounting body 42, and the second eccentric pin 84 is the lower end portion of the mounting support portion 64. It is arranged on the other side (right side in FIGS. 3 and 5). The first and second eccentric pins 82 and 84 are rotatably attached to the mounting support portion 64, and a locking ring 86 (for example, an E ring) is locked to an end portion protruding from the mounting support portion 64. Has been. The first and second eccentric pins 82 and 84 include first and second eccentric action portions 88 and 90 that are eccentric with respect to the rotation center. First and second receiving holes 92 and 94 are provided, and the first and second eccentric acting portions 88 and 90 are received in the corresponding first and second receiving holes 92 and 94. The first and second eccentric action portions 88 and 90 are somewhat smaller than the first and second receiving holes 92 and 94, and rotate within the first and second receiving holes 92 and 94 and move over a predetermined range. It is acceptable. Further, first and second set screws 96 and 98 for preventing the rotation of the first and second eccentric pins 82 and 84 are screwed to the mounting support portion 64.

  In order to allow relative rotation of the tool mounting member 44 with respect to the mounting body 42, the tool mounting member 44 is provided with a through hole 100, and a mounting bolt 102 for mounting the tool mounting member 44 passes through the tool mounting member 44. Although it attaches to the attachment main body 42 (attachment support part 64) through the hole 100, the internal diameter of these through-holes 100 is larger than the external shape of the axial part of the attachment bolt 102 (refer FIG. 3).

  In an NC lathe equipped with such a tool attachment means 38, the angular position of the tool attachment member 44 with respect to the attachment body 42 can be adjusted as follows. 4 and 5, in order to adjust the angular position, the first and second set screws 96 and 98 are loosened, and the mounting bolt 102 that has fixed the tool mounting member 44 is loosened. And the angle position of the tool attachment member 44 (the cutting tool 40 attached to it) is adjusted in the state which loosened the attachment bolt 102 and the 1st and 2nd set screws 96 and 98 in this way. For example, the first eccentric pin 82 is rotated as required, and finally is rotated in a predetermined direction (that is, counterclockwise in FIGS. 3 and 5) so that the angle on one side of the tool mounting member 44 (cutting) The tool 40 is positioned at an angle that prevents the cutting blade of the tool 40 from rotating clockwise about the support shaft 68 of the tool mounting member 44, and then the second eccentric pin 84 is moved in a direction opposite to the predetermined direction ( 3 and FIG. 5 is rotated clockwise to prevent the other angle of the tool mounting member 44 (the cutting blade of the cutting tool 40 from rotating counterclockwise around the support shaft 68). Positioning).

  At this time, when the first eccentric pin 82 is rotated and the first eccentric action part 88 acts on the inner side surface outside the first receiving hole 92 of the tool mounting member 44, the tool mounting member 44 is moved to its support shaft. The second eccentric operation portion 90 is rotated on the inner side surface of the second receiving hole 94 by rotating clockwise around the portion 68 and positioning at a predetermined angular position, and rotating the second eccentric pin 84. When acted, the tool mounting member 44 is rotated counterclockwise around the support shaft 68 and positioned at a predetermined angular position, and thus the angular position of the tool mounting member 44 relative to the mounting body 42 is adjusted. In other words, the machining position of the cutting tool 40 is adjusted with respect to the second workpiece (not shown) held by the second chuck means 10.

  For example, when positioning by rotating from the angular position shown by the solid line in FIG. 5 to the angular position shown by the two-dot chain line, the second eccentric pin 84 is rotated clockwise in FIG. The first eccentric pin 92 is rotated counterclockwise in FIG. 5 to act on the inner surface of the mounting member 44 on the outer side of the second receiving hole 94, and the first eccentric action portion 88 is moved to the first of the tool mounting member 44. It is desirable to operate so as to act on the inner side surface of the outer side of the receiving hole 92. On the contrary, for example, when positioning by rotating from the angular position indicated by the two-dot chain line in FIG. Contrary to the above, the first eccentric pin 82 is rotated counterclockwise in FIG. 5 to cause the first eccentric action portion 88 to act on the inner side surface outside the first receiving hole 92 of the tool mounting member 44, Then, the second eccentric pin 94 is illustrated. It is preferable that the second eccentric action portion 90 be operated clockwise so as to act on the inner side surface outside the second receiving hole 94 of the tool attachment member 44. The angular position of the tool mounting member 44 with respect to the main body 42 can be easily adjusted.

  After adjusting the angular position of the tool mounting member 44 in this way, the first and second set screws 96, 98 are tightened to fix the first and second eccentric pins 82, 84, and the mounting bolt 102 is fixed. The tool attachment member 44 is fixed to the attachment main body 42 (attachment support portion 64) by tightening, and thus the angular position of the tool attachment member 44 can be adjusted.

  As described above, when the first and second eccentric pins 82 and 84 are used for positioning at a predetermined angular position, the first and second eccentric operation portions 88 and 90 extend in both directions (in other words, In the first eccentric pin 82, a portion in which the radius in the first eccentric operation portion 88 is increased by rotation in a predetermined direction, and in the second eccentric pin 84, the predetermined direction. 3 so that the portion where the radius of the second eccentric operation portion 90 increases due to the rotation in the opposite direction) is applied to the tool mounting member 44, and therefore the tool mounting member 44 is counterclockwise in FIG. The second eccentric action portion 90 of the second eccentric pin 84 acts so as to bite into the load to be swung to the right and the load to turn the tool mounting member 44 clockwise in FIG. Of the first eccentric pin 82 It acts to 1 eccentric acting portion 88 bites, thereby, the tool mounting member 44 can be securely held and fixed at a desired angular position.

  In the above-described example, the first eccentric pin 82 is finally rotated in a predetermined direction to determine the angular position on one side of the tool mounting member 44, and then the second eccentric pin 84 is moved in a direction opposite to the predetermined direction. The angular position on the other side of the tool mounting member 44 is determined by rotating, but contrary to the above, the second eccentric pin 84 is finally rotated in the direction opposite to the predetermined direction, and the tool mounting member 44 is rotated. It is possible to determine the angular position on the other side, and then rotate the first eccentric pin 82 in a predetermined direction to determine the angular position on one side of the tool mounting member 44. It is desirable to rotate the first and second eccentric pins 82, 84 as described above with respect to the direction.

  Next, with reference to FIG.6 and FIG.7, the deformation | transformation form of a tool attachment means is demonstrated. In this variation, the first and second eccentric pins are disposed in association with the first and second mounting portions. In the following embodiments, members that are substantially the same as those in the embodiment described above are given the same reference numerals, and descriptions thereof are omitted.

  6 and 7, also in this modification, the angular position adjusting means 46B of the tool mounting means 38B includes a pair of eccentric pins, that is, first and second eccentric pins 82B and 84B. The two eccentric pins 82B and 84B are seen from the pair of adjacent mounting portions 48 in the tool mounting portion 36 of the turret 34, that is, the first mounting portion 52a on the upstream side in the clockwise direction in FIG. It is provided in relation to the second mounting portion 52b on the downstream side. The first eccentric pin 82B is disposed on the inner side of the first mounting portion 52a (on the downstream side of the first mounting portion 52a when viewed in the clockwise direction in FIG. 6), and is mounted on the lower end portion of the tool mounting member 44B. The second eccentric pin 84B is rotatably supported in a through hole (not shown), and is disposed on the inner side of the second mounting portion 52b (upstream side when viewed in the clockwise direction in FIG. 6). The member 44B is rotatably supported by an attachment through hole 112 provided at the lower end of the member 44B.

  The distal ends of the first and second eccentric pins 82B and 84B protrude from the mounting through-hole 112 to the rear surface side (that is, the front surface side of the turret 34), and the first and second eccentric pins protrude from the protruding end portions. Core action portions 88B and 90B are provided. In order to prevent detachment of the first and second eccentric pins 82B and 84B, a detachment prevention plate 114 is provided, and the detachment prevention plate 114 is attached to the back surface of the lower end portion of the tool attachment member 44B. Although not shown, a locking recess is provided at both ends of the separation preventing plate 114, and one locking recess is locked in a locking groove provided in the shaft portion of the first eccentric pin 82B, The other locking recess is locked to a locking groove 118 provided in the shaft portion 116 of the second eccentric pin 84B. Further, first and second set screws 96 and 98 for stopping the rotation of the first and second eccentric pins 82B and 84B are provided. Other configurations in this modified embodiment are substantially the same as those in the above-described embodiment.

  In the modified tool attachment means 38B, the angular position of the tool attachment member 44B relative to the attachment body 42 can be adjusted as follows. In order to adjust the angular position of the tool mounting member 44B (that is, the cutting tool 40), the first and second set screws 96 and 98 and the mounting bolt 102 are loosened in the same manner as described above. Then, the first eccentric pin 82B is rotated as required through the mounting through hole 112 of the tool mounting member 44B, and finally rotated in a predetermined direction (that is, counterclockwise in FIG. 6), thereby the tool mounting member 44B. Then, the second eccentric pin 84B is rotated in the direction opposite to the predetermined direction (clockwise in FIG. 6) to position the angle on the other side of the tool attachment member 44B.

  At this time, when the first eccentric pin 82B is rotated and the first eccentric action part 88B acts on the inner side surface of the first attachment part 52a in the tool attachment part 36 of the turret 34, the tool attachment member 44B is supported by the support part 44B. The shaft 68 is rotated counterclockwise to be positioned at a predetermined angular position, and the second eccentric pin 84B is rotated so that the second eccentric action portion 90B is attached to the tool attachment portion 36 in the second attachment. When acting on the inner surface of the portion 52b, the tool attachment member 44B is rotated clockwise around the support shaft portion 68 and positioned at a predetermined angular position, and the tool attachment member with respect to the attachment body 42 is the same as described above. The angle position of 44B can be adjusted.

  As described above, when the first and second eccentric pins 82B and 84B are used to position at a predetermined angular position, the first and second eccentric operation portions 88B and 90B are the same as described above even in this modified embodiment. In addition, it acts on the tool mounting portion 36 (that is, the first and second mounting portions 52a and 52b) in a direction extending to both sides, and accordingly, the load is applied to turn the tool mounting member 44B counterclockwise in FIG. On the other hand, the second eccentric action portion 88B of the first eccentric pin 82B acts so as to bite, and the second is not applied to a load for turning the tool mounting member 44B clockwise in FIG. The second eccentric action portion 90B of the eccentric pin 90B acts so as to bite in, so that the tool mounting member 44 can be reliably held and fixed at a desired angular position as described above.

  As mentioned above, although one Embodiment of the cutting device according to this invention was described, this invention is not limited to this embodiment, A various change thru | or correction | amendment are possible, without deviating from the scope of the present invention.

  For example, in the above-described embodiment, the biaxial control in which the cutting tool 40 moves relative to the workpiece in the Z axis (left and right direction in FIG. 1) and the X axis (direction perpendicular to the paper surface in FIG. 1). Although this is applied to the cutting device, when such a skiving cutting tool is used, the cutting tool 40 is also relative to the Y axis (vertical direction in FIG. 1) in addition to the Z axis and the X axis. It is desirable to apply to a three-axis control cutting apparatus that moves in a moving manner.

  In FIGS. 8 to 10 showing other embodiments of an NC lathe as an example of a three-axis control cutting apparatus, in the illustrated NC lathe, one side of the lathe body 2C (which constitutes a bed body) (FIG. 8 and FIG. 8). A main shaft portion 4C is provided on the left side in FIG. A main shaft (not shown) is rotatably supported in the main shaft portion 4C, chuck means 6C is mounted on the main shaft, and a workpiece (not shown) to be processed is attached to the chuck means 6C. The main shaft, the chuck means 6C, and the workpiece are rotated in a predetermined direction by one drive source 7C (for example, a drive motor).

  Further, a turret tool post 30C is disposed on the other side of the lathe body 2C (right part in FIGS. 8 and 9). In this embodiment, the lathe body 2C has a right portion of the Z-axis direction in which the reciprocating table 12C extends horizontally via the first guide support mechanism 14C (the direction from the upper left to the lower right in FIG. 8, the left and right direction in FIG. The reciprocating table 12C is reciprocated in the Z-axis direction along the first guide support mechanism 14C by the first drive motor 15C. In the reciprocating table 12C, the lower support table 20C is horizontally moved in the front-rear direction via the second guide support mechanism 22C (the direction from the lower left to the upper right in FIG. 8, the direction perpendicular to the paper in FIG. 9, the left-right direction in FIG. 10). The lower support table 20C is reciprocated in the front-rear direction (a direction inclined with respect to the Y-axis described later) along the second guide support mechanism 22C by the second drive motor 23C. An upper support table 27C is movably supported on the lower support table 20C via a third guide support mechanism 25C, and a turret tool post 30C is attached to the upper support table 27C, and the turret tool post 30C. Is reciprocated along the third guide support mechanism 25C by the third drive motor 29C.

  In this embodiment, the third guide support mechanism 25C extends while being inclined downward toward the front surface side of the lathe body 2C, and a predetermined angle α (see FIG. 10) downward in the horizontal direction is, for example, about 30 degrees. is there. With this configuration, the turret tool post 30C is moved along the third guide support mechanism 25C. Therefore, in this NC lathe, the oblique direction in which the turret tool post 30C is reciprocated is the X axis, and the tool attachment means 38 (the cutting tool 40 attached thereto) attached to the turret 34 is the X axis. The workpiece moves in the direction and moves toward and away from the workpiece held on the chuck means 6C. In addition, this inclination angle (alpha) can be made into appropriate angles, such as 45 degree | times and 60 degree | times, for example.

  Since the X axis of the lathe body 2C extends obliquely downward toward the front side of the lathe body 2C as described above, the Y axis of the lathe body 2C is relative to the X axis as shown in FIGS. Extending vertically (ie, obliquely upward with respect to the horizontal). Accordingly, the amount of movement of the turret type tool post 30C (ie, the turret 34) in the Y-axis direction is the movement in the front-rear direction via the second guide support mechanism 22C and the X-axis direction via the third guide support mechanism 25C. The amount of movement is controlled in combination with the movement of.

  The turret type tool post 30C is rotatably supported by the turret 34 having the same structure as described above, and the tool mounting portion 36 of the turret 34 has the same structure as described above as shown in FIGS. The tool attaching means 38 is attached, and the tool attaching means 38 attached to the turret 34 and its tool attaching portion 36 has substantially the same configuration as that described above (the one shown in FIGS. 2 to 5 or FIG. 6 and the configuration shown in FIG.

  In the cutting device of this other embodiment, the turret tool post 30C is reciprocated in the Y-axis direction in addition to the Z-axis direction and the X-axis direction, so that it can be used conveniently for skiving. it can. Then, in a state where the tool attachment means 38 is attached to the tool attachment portion 36 of the turret 34 as required, the tool attachment member 44 is attached to the attachment main body 42 with the support shaft portion 68 (turning center axis) as the Z axis ( When the angular position is adjusted by rotating around the direction perpendicular to the paper surface in FIG. 11, the cutting blade portion 41 of the cutting tool 40 attached to the tool attachment member 44 (the workpiece is cut) as shown in FIG. The angle around the Z-axis is adjusted, and the angle around the Y-axis changes as shown in FIG. 12 as a result of the rotation about the Z-axis. The angle adjustment about the Z axis and the angle adjustment about the Y axis of the 40 cutting blade portions 41 can be performed, and can be advantageously applied to skiving processing.

  In the above-described embodiment, the third guide support mechanism 25C that supports the turret type tool post 30C is disposed so as to be inclined downward toward the front side of the lathe body 2C, and the second support mechanism 27C supports the upper support table 27C. The guide support mechanism 22C is disposed so as to be horizontal in the front-rear direction of the lathe body 2C, and the X-axis of the lathe body 2C is inclined downward toward the front side of the lathe body 2C. The Y-axis is configured to extend obliquely upward toward the front side of the lathe body 2C perpendicular to the X-axis, but instead of such a configuration, the turret tool post 30C The third guide support mechanism 25C for supporting the upper support table 27C extends horizontally in the front-rear direction of the lathe body 2C. In this case, the movement direction of the lower support table 20C is the X axis of the lathe body 2C, and the movement direction of the upper support table 27C that supports the turret tool post 30C is the Y axis direction. It becomes.

2,2C Lathe body 30, 30C Turret type tool post 34 Turret 36 Tool mounting portion 38, 38B Tool mounting means 40 Cutting tool 41 Cutting blade portion 42 Mounting body 44, 44B Tool mounting member 46, 46B Angular position adjusting means 48 Mounting portion 68 Support shaft part 82, 82B, 84, 84B Eccentric pin 88, 88B, 90, 90B Eccentric action part

Claims (5)

A main shaft portion for rotatably supporting the main shaft, chuck means for holding a workpiece detachably and rotating integrally with the main shaft, and a turret having a tool mounting portion for mounting a cutting tool; In a cutting device comprising: a tool attachment means for attaching the cutting tool to the tool attachment portion of the turret,
The tool attachment means includes an attachment main body attached to the tool attachment portion of the turret, a tool attachment member attached to the attachment main body so as to be rotatable over a predetermined angle range, and the tool attachment to the attachment main body. An angular position adjusting means for relatively rotating the member, the cutting tool is attached to the tool holding portion of the tool attachment member,
The angular position adjusting means includes first and second eccentric pins rotatably mounted on the mounting body, and the first eccentric pin is rotated in a predetermined direction and has a first eccentric action. And the second eccentric pin is rotated in a direction opposite to the predetermined direction, and the second eccentric acting portion is configured to act on the tool mounting member. A cutting apparatus characterized in that it is configured to act on the other part, whereby the relative angular position of the tool mounting member with respect to the mounting body is adjusted. The tool attachment member is provided with first and second receiving holes corresponding to the first and second eccentric pins, and the first eccentric action portion of the first eccentric pin is the tool attachment member. And the second eccentric acting portion of the second eccentric pin is located in the second receiving hole of the tool mounting member,
By rotating the first eccentric pin in the predetermined direction, the first eccentric action part acts on the inner side surface of the tool mounting member outside the first receiving hole, and thereby the first eccentric pin The angle of one side of the tool attachment member is positioned by the action of the pin, the second eccentric pin is rotated in the direction opposite to the predetermined direction, and the second eccentric action portion is the second of the tool attachment member. 2. The cutting device according to claim 1, which acts on an inner side surface of the outer side of the receiving hole, whereby the angle on the other side of the tool mounting member is positioned by the action of the second eccentric pin. . A main shaft portion for rotatably supporting the main shaft, chuck means for holding a workpiece detachably and rotating integrally with the main shaft, and a turret having a tool mounting portion for mounting a cutting tool; In a cutting device comprising: a tool attachment means for attaching the cutting tool to the tool attachment portion of the turret,
The tool attachment means includes an attachment main body attached to the tool attachment portion of the turret, a tool attachment member attached to the attachment main body so as to be rotatable over a predetermined angle range, and the tool attachment to the attachment main body. An angular position adjusting means for relatively rotating the member, the cutting tool is attached to the tool holding portion of the tool attachment member,
The angular position adjusting means includes first and second eccentric pins rotatably attached to the tool mounting member, and the first eccentric pin is rotated in a predetermined direction and the first eccentric pin is rotated. The action part is configured to act on a part of the tool mounting part of the turret, and the second eccentric pin is rotated in a direction opposite to the predetermined direction, so that the second eccentric action part is A cutting apparatus configured to act on the other part of the tool mounting portion of the turret, thereby adjusting a relative angular position of the tool mounting member with respect to the mounting body. The tool attachment portion of the turret is provided with first and second attachment portions at a predetermined interval, and the attachment body of the tool attachment means is attached over the first and second attachment portions, The first eccentric action part of the first eccentric pin is disposed inside the first attachment part, and the second eccentric action part of the second eccentric pin is located inside the second attachment part. Has been placed,
By rotating the first eccentric pin in the predetermined direction, the first eccentric acting part acts on the inner surface of the first attaching part, and thereby the tool attaching is performed by the action of the first eccentric pin. The angle on one side of the member is positioned, the second eccentric pin is rotated in the direction opposite to the predetermined direction, and the second eccentric acting portion acts on the inner surface of the second mounting portion, thereby The cutting apparatus according to claim 3, wherein an angle on the other side of the tool attachment member is positioned by the action of the second eccentric pin. A reciprocating table is supported by the bed body through a first guide support mechanism so as to be movable in the horizontal Z-axis direction, and a lower support table is movable by the reciprocating table through a second guide support mechanism in a horizontal front-rear direction. The upper support table is supported by the lower support table via a third guide support mechanism so as to be movable in the X-axis direction inclined downward, and a turret tool post is attached to the upper support table. The turret is rotatably supported by the turret type tool post, and the lower support table is moved in the Y-axis direction perpendicular to the X-axis by a combination of movement by the second guide support mechanism and the third guide support mechanism. The cutting apparatus according to claim 1, wherein the cutting apparatus is moved.

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