CN117483823A

CN117483823A - Machine tool

Info

Publication number: CN117483823A
Application number: CN202311321588.6A
Authority: CN
Inventors: 前原智宪; 志田忠靖; 片冈洋一
Original assignee: Citizen Machinery Co Ltd; Citizen Watch Co Ltd
Current assignee: Citizen Machinery Co Ltd; Citizen Watch Co Ltd
Priority date: 2016-08-31
Filing date: 2017-06-19
Publication date: 2024-02-02
Also published as: KR20190044639A; WO2018042832A1; KR102352753B1; ES2973473T3

Abstract

A machine tool having a simple structure is provided with comb-shaped tool holders, wherein in order to be able to perform a plurality of types of machining in a complex manner, two comb-shaped tool holders (27, 56) which are disposed so as to face each other with the axis of a spindle (7) being movable in the axial direction therebetween are each supported so as to be movable in the X-direction and the Y-direction orthogonal to the axial direction of the spindle (7), tools (19, 47) are mounted in parallel in the Y-direction, one comb-shaped tool holder (56) is disposed so as to be movable in the Z-direction in the same direction as the axial direction of the spindle (7), and a rotary tool base (34) is integrally provided with any one of the comb-shaped tool holders (27), and the rotary tool base (34) rotatably supports a tool (31) with the Y-axis along the Y-direction as the center.

Description

Machine tool

The present application is a divisional application of chinese patent application with the name of "machine tool" with the application date 2017, 06, month and 19, and application number 201780051173.8.

Technical Field

The present invention relates to a machine tool.

Background

Conventionally, a machine tool is provided with a supported spindle that is movable in an axial direction and two tool holders that are disposed opposite each other with an axis of the spindle interposed therebetween, the two tool holders being supported so as to be movable in an X-axis direction and a Y-axis direction orthogonal to the axial direction of the spindle, and tools being mounted in parallel in the Y-axis direction, and one tool holder being disposed so as to be movable in a Z-axis direction in the same direction as the axial direction of the spindle (for example, refer to patent document 1 (page 5, fig. 1)).

A machine tool having a rotary tool base rotatably supported around the Y axis is also known (for example, refer to patent document 2 (page 6, fig. 4)).

(prior art literature)

(patent literature)

Patent document 1: japanese laid-open patent publication No. 2001-129701

Patent document 2: japanese patent application laid-open No. 4997240

Disclosure of Invention

(problem to be solved by the invention)

The present invention provides a machine tool having a simple structure, which is provided with comb-shaped tool holders for installing tools in parallel along a Y-axis direction, and which can perform a plurality of types of machining in a compound manner.

(measures taken to solve the problems)

In order to solve the above problems, the present invention provides a machine tool including: a main shaft supported so as to be movable in the axial direction; and two comb-tooth-shaped tool holders disposed opposite to each other with the axis (axial center) of the spindle interposed therebetween, each of the two comb-tooth-shaped tool holders being supported so as to be movable in an X direction and a Y direction, and tools being mounted in parallel in the Y direction, the X direction and the Y direction being orthogonal to the axis direction of the spindle, one of the two comb-tooth-shaped tool holders being disposed so as to be movable in a Z direction in the same direction as the axis direction of the spindle, and a rotary tool base integrally being disposed on either (either one of) the two comb-tooth-shaped tool holders, the rotary tool base rotatably supporting the tools about a Y axis along the Y direction.

In the machine tool of the present invention, an end tool base that moves integrally with the comb blade holder may be provided on the comb blade holder side of any one of the two comb blade holders.

In the machine tool of the present invention, the rotary tool base and the end tool base may be provided on different respective sides of the comb-shaped blade holder.

In the machine tool according to the present invention, the rotary tool base may be provided on the comb-shaped blade holder side fixed in the Z direction.

In the machine tool according to the present invention, a second spindle may be provided opposite to the spindle, and a second spindle tool base for attaching a tool for machining a material held by the second spindle may be provided on an opposite side of the axis line of the spindle with respect to the rotary tool base.

In the machine tool according to the present invention, the spindle may be provided such that an axis of the spindle is directed in a left-right direction, and the two comb blade holders may be provided in a front-rear direction with respect to the axis of the spindle, such that the comb blade holder movable in the Z direction is provided on a rear side which is an opposite side to a work area of an operator who is a front side of the machine.

(effects of the invention)

The machine tool according to the present invention configured as described above has a comb-shaped tool rest in which tools are mounted in parallel in the Y-axis direction, and has an effect that a machine tool capable of performing a plurality of types of machining in a complex manner can be provided with a simple structure (configuration).

Drawings

Fig. 1 is a perspective view of an automatic lathe as an embodiment of the machine tool of the present invention.

Fig. 2 is a plan view of a main portion of the automatic lathe shown in fig. 1.

Fig. 3 is a front view of a main portion of the automatic lathe shown in fig. 1.

Fig. 4 is a cross-sectional view A-A of fig. 2.

Fig. 5 is a bevel view showing a main portion of the rotary tool base.

Detailed Description

As shown in fig. 1 to 4, as an automatic lathe according to an embodiment of the machine tool of the present invention, a Z1 slide rail 2 extending in a Z direction, which is a horizontal direction in a plan view, is provided on a bed 1. The Z1 slide rail 2 is fixed on a Z1 guide block 3 fixed on the lathe bed 1. In a plan view, the Z1 slide rail 2 is provided in parallel in two X directions orthogonal to the Z direction in the front-rear direction.

The saddle 4 is slidably mounted on the Z1 slide rail 2. The first spindle base 6 is integrally mounted to the saddle 4. The first spindle 7 is rotatably supported by the first spindle base 6. The first spindle 7 is provided with its axis extending in the Z direction. The Z1 motor 5 is fixed to the Z1 guide block 3.

The Z1 motor 5 rotationally drives a ball screw of a ball screw mechanism engaged with the first spindle base 6 between the two Z1 slide rails 2. The first spindle 7 is slidable in the Z direction through the first spindle base 6 by driving the Z1 motor 5. The automatic lathe is right-handed (right-handed cartesian coordinate system), and the position of the first spindle 7 viewed on the right side (position on the right side) is the front side (front side) of the automatic lathe, and a work area of an operator is provided on the front side as the front side of the automatic lathe.

On the left side of the Z1 slide rail 2, a support base 8 fixed to the bed 1 is provided. A guide sleeve unit 9 is fixed to the support base 8. The guide sleeve unit 9 is formed by accommodating a guide sleeve 10 in a guide sleeve holder 11. The guide sleeve unit 9 is provided in such a manner that the axis of the guide sleeve 10 coincides with the axis of the first spindle 7, and the guide sleeve holder 11 is fixed to the support base 8. The guide sleeve 10 is located on the left side of the first spindle 7.

An X1 slide rail 12 extending in the X direction is fixed to the support base 8. The X1 slide rails 12 are provided in two in parallel in the Y direction orthogonal to the up-down direction of the X direction and the Z direction. Saddle 13 is slidably mounted on X1 slide rail 12. The X1 moving bracket 14 is integrally mounted on the saddle 13. The X direction, the Y direction, and the Z direction are orthogonal to each other.

A saddle 17 slidably mounted on a Y1 slide rail 16 extending in the Y direction is integrally fixed to the X1 moving base 14. The Y1 slide rail 16 is integrally fixed to the first slide base 18. The first tool holder 21 to which the working tool 19 is attached is integrally fixed to the first slide base 18. The first tool holder 21 can arrange the tools 19 side by side in the Y direction.

An X1 motor 22 is fixed to the support base 8. The X1 motor 22 rotationally drives a ball screw of a ball screw mechanism engaged with the X1 moving base 14 between the two X1 slide rails 12. The Y1 motor 24 is fixed to the upper surface of the first slide base 18 via a motor mounting plate 23.

The Y1 motor 24 rotationally drives a ball screw of a ball screw mechanism engaged with the first slide base 18 between the two Y1 slide rails 16 via a belt 26. The first slide base 18 slides in the X direction by the drive of the X1 motor 22, and slides in the Y direction by the drive of the Y1 motor 24.

The first tool holder 21 is fixed to the first slide base 18 to form a first comb-shaped blade holder 27. In the first comb-teeth blade holder 27, the tools 19 are arranged in parallel in the Y direction, and slide in the X direction and the Y direction by driving the X1 motor 22 and the Y1 motor 24. The first comb-shaped blade holder 27 is provided in front of the axis of the first spindle 7 and is slidable within a range in front of the axis of the first spindle 7.

As shown in fig. 5, a rotary tool base 28 is integrally fixed to the first slide base 18 at a position above the first tool holder 21. The first rotary tool base 29 having a substantially inverted L shape is rotatably attached to the rotary tool base 28 about an axis Y along the Y direction. The first rotary tool base 29 extends in the Y direction, and a plurality of rotary tools 31 can be juxtaposed in the Y direction. The first rotary tool base 29 can mount a rotary tool 31 such as a drill or an end mill so as to protrude in the right and left directions.

On the upper surface of the rotary tool base 28, an S3 rotary tool motor 32 for rotationally driving the rotary tool 31 mounted on the first rotary tool base 29 is mounted. The first rotary tool base 29 is capable of rotationally driving the rotary tool 31 mounted on the first rotary tool base 29 by the S3 rotary tool motor 32 via a rotary drive mechanism provided therein.

In the rotary tool base 28, a B1 motor 33 is mounted toward the right side. The first rotary tool base 29 is rotationally driven (rotationally driven) by the B1 motor 33 via a rotational drive mechanism configured between the rotary tool base 28 and the first rotary tool base 29. The first rotary tool base 29 is rotatably supported by the rotary tool base 28, and constitutes a rotary tool base 34.

The rotary tool base 34 is integrally attached to the first comb-shaped blade holder 27 by fixing the rotary tool base 28 to the first slide base 18. The rotary tool 31 mounted on the rotary tool base 34 can integrally rotate a so-called B-axis rotation (rotation) about the Y-direction (Y-axis) by the first rotary tool base 29.

A Z2 moving base 36 is provided behind the first spindle 7. A Z2 slide rail 37 extending in the Z direction is provided on the bottom surface of the Z2 moving base 36. The Z2 slide rails 37 are provided in two in parallel with the X direction. Saddle 38 is slidably mounted on Z2 slide rail 37. The saddle 38 is fixed to the bed 1 behind the first spindle 7.

An X2 slide rail 39 extending in the X direction is fixed to the Z2 moving base 36. The X2 slide rails 39 are provided in two in parallel with the Y direction. The saddle 41 is slidably mounted on the X2 slide rail 39. The X2 moving base 42 is integrally mounted on the saddle 41. A saddle 44 movably mounted on a Y2 slide rail 43 extending in the Y direction is integrally fixed to the X2 moving base 42.

The Y2 slide rail 43 is integrally fixed to the second slide base 46. A second tool holder 48 to which a tool 47 for machining is attached is integrally fixed to the second slide base 46. The second tool holder 48 can arrange the tools 47 in the Y direction. The Z2 motor 49 is fixed to the bed 1.

The Z2 motor 49 rotationally drives a ball screw of a ball screw mechanism engaged with the Z2 moving base 26 between the two Z2 slide rails 37. The Z2 moving base 36 slides in the Z direction by driving of the Z2 motor 49. The X2 motor 51 is fixed to the Z2 moving base 36. The X2 motor 51 rotationally drives a ball screw of a ball screw mechanism engaged with the X2 moving base 42 between the two X2 slide rails 39.

The Y2 motor 53 is fixed to the upper surface of the second slide base 46 via a motor mounting plate 52. The Y2 motor 53 rotationally drives the ball screw of the ball screw mechanism engaged with the second slide base 46 between the two Y2 slide rails 43 via the belt 54. The second slide base 46 slides in the X direction by the drive of the X2 motor 51, and slides in the Y direction by the drive of the Y2 motor 53.

The second tool holder 48 is fixed to the second slide base 46 to form a second comb-shaped tool post 56. The second comb-teeth blade holder 56 is provided with the tools 47 aligned in the Y direction and slides in the X direction, the Y direction, and the Z direction by driving the X2 motor 51, the Y2 motor 53, and the Z2 motor 49. The second comb-shaped blade holder 56 is provided on the rear side (inner side) behind the axis of the first spindle 7, and performs sliding in a range rearward from the axis of the first spindle 7. The first comb-shaped blade holder 27 and the second comb-shaped blade holder 56 sandwich the axis (axial center) of the first spindle 7 and are opposed to each other in the front-rear direction.

In the 2 nd slide base 46, an end tool base 57 is integrally fixed at a position above the second tool holder 48. The end tool base 57 is capable of holding and mounting a boring tool 58 such as a drill bit in an X-direction and Y-direction matrix. The end tool base 57 can mount the boring tool 58 so as to protrude in the right and left directions.

In the second slide base 46, a second rotary tool base 59 is integrally fixed at a position above the end tool base 57. The second rotary tool base 59 extends in the Y direction, and a plurality of rotary tools 61 such as a drill and an end mill can be arranged in the Y direction. An S4 rotary tool motor 62 is mounted on the second rotary tool base 59, and the S4 rotary tool motor 62 rotationally drives a rotary tool 61 mounted on the second rotary tool base 59.

The second rotary tool base 59 is capable of driving the rotary tool 61 mounted on the second rotary tool base 59 to rotate by the S4 rotary tool motor 62 via the rotary driving mechanism provided inside thereof. The uppermost tool mounting portion 60 of the second rotary tool base 59 is rotatably provided around the X direction. The tool mounting portion 60 can be positioned and fixed at a predetermined rotation angle using manual adjustment of the rotation angle from the front side (front side).

On the left side of the support base 8, an X3 slide rail 63 extending in the X direction is provided, which is fixed to the bed 1. The X3 slide rails 63 are provided in two in parallel with the Z direction. Saddle 64 is slidably mounted on X3 slide rail 63. The X3 moving base 66 is integrally mounted on the saddle 64. A Z3 slide rail 67 extending in the Z direction is integrally fixed to the X3 moving base 66.

The Z3 slide rails 67 are provided in two in parallel with the X direction. Saddle 68 is slidably mounted on Z3 slide 67. The second spindle base 69 is integrally mounted to the saddle 68. The second spindle 71 is rotatably supported by the second spindle base 69. The second main shaft 71 is provided with its axis extending in the Z direction.

A ball screw mechanism that engages the X3 moving base 66 and the ball screw 72 between the two X3 slide rails 63 is fixed to the bed 1. The ball screw 72 is rotationally driven by a motor or the like to slide the X3 moving base 66 in the X direction. The Z3 motor 73 is fixed to the X3 moving base 66.

The Z3 motor 73 rotationally drives a ball screw of a ball screw mechanism engaged with the second spindle base 69 between the two Z3 slide rails 67. The second spindle base 69 slides in the Z direction by the drive of the Z3 motor 73. The second spindle 71 slides in the X direction and the Z direction by driving a motor that drives the Z3 motor 73 and the ball screw 72.

An opposed tool rest 70 is integrally fixed to the second spindle base 69, and the opposed tool rest 70 is attached to a tool 75 corresponding to machining on the first spindle 7. The opposing tool holder 70 is capable of mounting a tool 75 in the Z-direction. The opposing tool post 70 slides integrally with the second spindle 71 in the X-direction and the Z-direction.

The second support 74 is mounted on the bed 1 at a position rearward of the X3 slide 63. And a Y3 slide rail 76 extending in the Y direction is integrally fixed to the second support frame 74. The Y3 slide rails 76 are provided in two in parallel with the X direction. Saddle 77 is slidably mounted on Y3 rail 76. The Y3 moving base 78 is integrally mounted on the saddle 77.

A second spindle tool base 81 is integrally fixed to the Y3 moving base 78, and a tool 79 corresponding to machining on the second spindle 71 is attached to the second spindle tool base 81. The Y3 motor 82 is fixed to the second support base 74. The Y3 motor 82 rotationally drives a ball screw of a ball screw mechanism engaged with the Y3 moving base 78 between the two Y3 slide rails 76.

The Y3 moving base 78 slides in the Y direction by the driving of the Y3 motor 82. The second spindle tool base 81 of the present embodiment is formed such that the tools 79 can be arranged in the Y direction. An S5 rotary tool motor 83 for rotationally driving the tool 79 is integrally mounted on the second spindle tool base 81.

The second spindle tool base 81 can mount a rotary tool such as a drill or an end mill as the tool 76, and the rotary tool mounted on the second spindle tool base 81 is rotationally driven by the S5 rotary tool motor 83 via a rotary drive mechanism provided inside thereof. The tool mounting portion 80 at the uppermost stage of the 2 nd spindle tool base 81 is rotatably provided around the X direction. The fixing tool mounting portion 80 can be positioned at a predetermined rotation angle using manual adjustment of the rotation angle from the front side.

An elongated bar can be inserted as material into the first spindle 7 from behind the first spindle 7. The bar inserted into the first spindle 7 is held by the first spindle 7 in a state protruding from the guide sleeve 10. The bar held by the first spindle 7 is rotated by rotationally driving the first spindle 7.

The relatively rotated bar moves the first spindle 7 in the Z direction, and the tool 19 mounted on the first comb-shaped holder 21 is selected by moving the first comb-shaped blade holder 27 in the X direction and the Y direction, and the portion of the bar protruding from the guide sleeve 10 can be machined by the selected predetermined tool 19.

The bar is fixed or rotated, the rotary tool base 34 is rotated, the first spindle 7 is moved in the Z direction, and a predetermined rotary tool 31 mounted on the rotary tool base 34 is selected by moving the first comb-teeth-shaped blade holder 27 in the X direction and the Y direction, and the so-called B-axis machining of the bar can be performed by the selected rotary tool 31.

The relatively rotated bar moves the second comb blade holder 56 in the X direction, the Y direction, and the Z direction to select a tool mounted on the second tool holder 48 or the end tool base 57 or the second rotary tool base 59, and the portion of the bar protruding from the guide sleeve 10 can be machined by a selected predetermined tool. For example, the tool mounting portion 60 of the second rotary tool base 59 is provided with the rotary tool 61 via an attachment or the like in a direction perpendicular to the rotation center axis, whereby the rotary tool 61 can be rotated and mounted at a predetermined angle to perform machining.

The machining of each tool provided on the second comb-teeth blade holder 56 can be performed independently of the machining of each tool provided on the first comb-teeth blade holder 27 (independent machining) in the rear of the bar opposing each other with the axis of the first spindle 7 interposed therebetween.

Since the second comb-shaped blade holder 56 is movable in the Z direction, for example, the machining by the respective tools provided on the first comb-shaped blade holder 27 and the machining by the respective tools provided on the second comb-shaped blade holder 56 can be simultaneously performed by following or superimposing the second comb-shaped blade holder 56 on the movement of the first main shaft 7 in the Z direction corresponding to the machining by the respective tools provided on the first comb-shaped blade holder 27.

The opposing tool rest 70 and the second spindle 71 are integrally moved in the X-direction and the Z-direction by a predetermined tool 75 selected, and the bar held by the first spindle 7 can be processed by the predetermined tool 75 selected. The machining by the tools 75 mounted on the counter blade carrier 70 is performed by following or superimposing the movement of the counter blade carrier 70 on the first spindle 7, whereby the machining by the tools provided on the first comb blade carrier 27 and the machining by the tools provided on the second comb blade carrier 56 can be simultaneously performed.

When the processing of one product is completed in the bar held by the first spindle 7, the second spindle base 69 is moved in the X direction so that the axis of the second spindle 71 coincides with the axis of the first spindle 7, and the cut portion of the bar can be transferred as a material to the second spindle 71. By moving the second spindle 71 in the X direction and the Z direction, and by moving the second spindle tool base 81 in the Y direction, the tool 79 mounted on the second spindle tool base 81 is selected, and the material held by the second spindle 71 can be processed by the selected predetermined tool 79.

At this time, for example, the tool 79 is attached to the tool attachment portion 80 of the second spindle tool base 81 via an attachment or the like in a direction intersecting with the rotation center axis, and the tool 79 is rotatably attached at a predetermined angle to perform machining.

The second spindle 71 is fixed or rotationally driven, and the first comb-shaped blade holder 27 is moved in the X direction and the Y direction while the second spindle 71 is moved in the X direction and the Z direction, whereby the rotating tool base 34 is rotated to select a predetermined rotating tool 31 mounted on the rotating tool base 34, and the material held by the second spindle 71 can be subjected to so-called B-axis machining by the selected rotating tool 31.

The material gripped by the second main shaft 71 is processed by selecting a tool attached to the second comb blade holder 56 by moving the second main shaft 71 in the X direction and the Z direction and moving the second comb blade holder 56 in the X direction, the Y direction, and the Z direction, and using the selected tool.

The first comb-shaped blade holder 27 moving in the X-direction and the Y-direction and the relative first comb-shaped blade 27 move independently in the X-direction and the Y-direction, and the machining in the first main shaft 7 and the machining in the second main shaft 71 can be independently performed by the second comb-shaped blade holder 56 moving in the Z-direction, respectively.

Further, the rotary tool base 34 and the end tool base 57 are provided independently and respectively on the first comb-shaped blade holder 27 and the second comb-shaped blade holder 56 that move in the X direction and the Y direction, and since the second comb-shaped blade holder 56 can move in the Z direction, the second comb-shaped blade holder 56 is followed or superimposed on the movement in the Z direction of the second spindle 71 corresponding to the B-axis processing of the material held by the second spindle 71 of the rotary tool 31 mounted on the rotary tool base 34, and the processing of the material can be performed by the respective tools provided on the second comb-shaped blade holder 56.

(cross-reference to related applications)

The present invention claims priority from Japanese patent application Ser. No. 2016-170350 and Japanese patent application Ser. No. 2016-174600, from Japanese patent application Ser. No. 8 and 31, and from Japanese patent application Ser. No. 9 and 7, the disclosures of which are incorporated herein by reference in their entirety.

Claims

1. A machine tool is characterized in that,

the machine tool is provided with: a main shaft supported so as to be movable in the axial direction; two comb-shaped knife holders which are oppositely arranged with the axis of the main shaft clamped,

the two comb-tooth-shaped tool holders are each supported so as to be movable in an X direction and a Y direction, and tools are mounted in parallel in the Y direction, the X direction and the Y direction being orthogonal to an axial direction of the spindle, and one of the two comb-tooth-shaped tool holders is provided so as to be movable in a Z direction in the same direction as the axial direction of the spindle,

and a rotary tool base is integrally arranged on any one of the two comb-tooth-shaped tool rests, and the rotary tool base supports a tool in a rotatable manner by taking a Y axis along the Y direction as a center.

2. A machine tool according to claim 1, wherein,

an end tool base which moves integrally with the comb-shaped blade holder is provided on the comb-shaped blade holder side of any one of the two comb-shaped blade holders.

3. A machine tool according to claim 2, wherein,

the rotary tool base and the end tool base are disposed on the respective different sides of the comb-shaped blade holder.

4. A machine tool according to claim 1, wherein:

the rotating tool base is arranged on the side of the comb-shaped tool rest fixed in the Z direction.

5. A machine tool according to claim 2, wherein:

6. A machine tool according to claim 3, wherein:

7. A machine tool according to any one of claims 1 to 6,

a second spindle is provided opposite to the spindle, and a second spindle tool base for attaching a tool for machining a material held by the second spindle is provided on an opposite side of an axis line of the spindle with respect to the rotary tool base.

8. A machine tool according to any one of claims 1 to 6,

the main shaft is provided such that an axis of the main shaft is left and right, and the two comb blade holders are provided in front and rear with respect to the axis of the main shaft, so that the comb blade holder movable in the Z direction is provided on a rear side which is an opposite side to a work area of an operator who is a front side of the machine.

9. The machine tool according to claim 7, wherein the machine tool comprises a machine tool body,