JP2016022573A - Machine tool and arrangement structure of the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a machine tool and an arrangement structure of the machine tool capable of shortening a flow line of an operator and avoiding expansion of an arrangement space when arranging a plurality of machine tools.SOLUTION: In a turret lathe, a main shaft is arranged to be directed to an operator side in a machine casing 14 having a front face wall 15 located on the operator side. In the turret lathe, a left workpiece setup section 19a is provided to be overlapped with a right half section of a left front face wall 15a of the machine casing 14 when viewed from the operator side. The workpiece setup section is formed so that a workpiece holding section of a workpiece loading mechanism mounting a workpiece on the main shaft can enter. When the workpiece holding section is located in the workpiece setup section, a workpiece can be supplied to the workpiece holding section from the outside of the workpiece setup section.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a machine tool in which a main shaft is arranged toward an operator in a machine casing and an arrangement structure when two machine tools are arranged.

In a machine tool, it is general that the machine main body is surrounded by a machine body cover, an access opening is provided in the machine body cover, and the opening is opened and closed by a door. As such a conventional machine tool, for example, in Patent Document 1, a front door is provided on the front surface of the machine body cover, a side door is provided on a side surface, and one door allows access to a machined portion. The thing which enabled the attachment or detachment of the workpiece | work with respect to the workpiece | work exchange apparatus by the door of this is disclosed.

Japanese Patent Laid-Open No. 5-96433

In the conventional apparatus described in Patent Document 1, since the workpiece can be attached to and detached from the front door, for example, to the workpiece changer, and the machined portion can be accessed from the side door, for example, the operator can respond to the work contents. Therefore, there is a problem that access is made from the front door or the side door and the flow line of the operator becomes long.

Further, when a plurality of the machine tools are arranged in parallel, it is necessary to secure a working space from the side door between the machine tools, which causes a problem that a necessary arrangement space is enlarged.

  The present invention has been made in view of the above situation, and provides a machine tool capable of shortening the flow line of an operator and avoiding an increase in arrangement space when arranging a plurality of machines, and an arrangement structure of the machine tool. It is an issue.

The invention of claim 1 is a machine tool in which a main shaft is arranged facing an operator side in a machine casing having a front wall located on the operator side.
A workpiece setup portion is provided so as to wrap around a part of the front wall of the machine casing as viewed from the operator side.

The invention of claim 2 is the machine tool according to claim 1,
The workpiece setup portion is formed so that a workpiece gripping portion of a workpiece loading mechanism for mounting a workpiece on the spindle can enter, and when the workpiece gripping portion is located in the workpiece setup portion, the workpiece setup portion is arranged outside the workpiece setup portion. It is characterized in that the workpiece can be supplied from one side to the workpiece gripping portion.

The invention of claim 3 is the machine tool according to claim 2,
The workpiece loading mechanism has an arm portion that can be rotated between the workpiece set-up portion side and the main shaft side about a horizontal axis, and the workpiece gripping portion is provided at a tip portion of the arm portion. It is characterized by being.

The invention of claim 4 is the machine tool according to claim 3,
The workpiece gripping portion is positioned at a workpiece picking position or a workpiece mounting position by moving in the horizontal direction in a state where the arm portion is rotated to the main shaft side.

The invention of claim 5 is the machine tool according to claim 3,
The workpiece gripping portion is characterized by being positioned at a workpiece removal position or a workpiece mounting position by rotating around the axis in the front-rear direction while the arm portion is rotated toward the main shaft.

The invention of claim 6 is the machine tool according to claim 3,
By combining the movement of the arm portion rotating to the main shaft side, the movement of the workpiece gripping portion moving in the horizontal direction, and the movement of the workpiece gripping portion rotating about the front-rear direction axis, It is characterized in that it is positioned at the workpiece removal position or workpiece mounting position.

The invention of claim 7 is a machine comprising the machine tool according to any one of claims 1 to 6 and a machine tool arranged so as to be symmetrical with respect to the machine tool when viewed from the operator side. This is a machine arrangement structure.

  According to the first aspect of the present invention, when the main shaft is arranged in the machine casing toward the operator side, for example, the front surface is wrapped so as to wrap with a part of the front wall of the machine casing as viewed from the operator side. In the case where the workpiece setup portion is provided on one side of the wall, the operator can perform workpiece setup on one side of the front wall, for example, the workpiece can be attached to or detached from the workpiece loading mechanism for mounting the workpiece on the spindle. Further, by providing a door on the remaining part of the one side portion of the front wall, it becomes possible for the operator to access the work gripping part and the processing part, and the operator can perform the work only by movement of the front wall part. As a result, the flow line of the operator can be shortened.

In addition, since the workpiece can be attached to and removed from the front wall and the spindle and the machining part can be accessed, when arranging a plurality of machine tools, adjacent machine tools can be arranged with a minimum gap between them. As a result, it is possible to avoid an increase in necessary arrangement space.

According to the invention of claim 2, since the workpiece setup portion is formed so that the workpiece gripping portion of the workpiece loading mechanism can enter, when the workpiece gripping portion is located in the workpiece setup portion, The workpiece can be attached to or detached from the workpiece gripping portion from the outside of the workpiece setup portion, and the workpiece can be easily attached and detached.

According to the invention of claim 3, since the workpiece loading mechanism has a configuration in which a workpiece gripping portion is provided at a tip portion of an arm portion that is rotatable between the workpiece setup portion side and the spindle side, the arm When the part is rotated to the workpiece setup part side, the workpiece gripping part is positioned in the workpiece setup part, so that the workpiece can be easily attached and detached.

According to a fourth aspect of the present invention, the workpiece gripping portion is positioned at a workpiece picking position or a workpiece mounting position by rotating about the front-rear direction axis in a state where the arm portion is rotated to the main shaft side. Therefore, when the spindle moves toward the positioned workpiece gripping portion, the workpiece gripping portion can take out the processed workpiece from the spindle, or can mount an unmachined workpiece on the spindle.

According to the invention of claim 5, the workpiece gripping portion is positioned at the workpiece removal position or the workpiece mounting position by moving in the horizontal direction with the arm portion rotated to the main shaft side. By moving the spindle toward the workpiece gripping portion, the workpiece gripping portion can take out the processed workpiece from the spindle or mount an unmachined workpiece on the spindle.

According to the invention of claim 6, the workpiece gripping portion includes a movement in which the arm portion moves toward the main shaft side, a movement in which the workpiece gripping portion moves in the horizontal direction, and the workpiece gripping portion that is centered on the longitudinal axis. Since the workpiece is positioned at the workpiece take-out position or workpiece mounting position by combining with the rotating motion, the workpiece gripping portion moves the processed workpiece by moving the spindle toward the positioned workpiece gripping portion. It can be removed from the spindle or a workpiece can be mounted on the spindle.

According to invention of Claim 7, since the said machine tool and the machine tool arrange | positioned so that it may become left-right symmetric when seeing from the operator side with respect to this machine tool were arrange | positioned adjacently, machine tools are minimized. It is possible to arrange with a gap, and as a result, it is possible to avoid an increase in the necessary arrangement space.

1 is a front perspective view of a state in which a two-spindle turret lathe formed by arranging two turret lathes according to Embodiment 1 of the present invention in parallel is surrounded by a mechanical casing. It is a front view of the state which enclosed the said 2 spindle turret lathe with the machine casing. It is a top view of the state which enclosed the said 2 spindle turret lathe with the machine casing. FIG. 3 is a front perspective view of the two-spindle turret lathe. It is a top view in the state in which the workpiece holding part of the said 2 spindle turret lathe exists in a setup part. It is a top view in the state where the work holding part of the 2 spindle turret lathe turned to the spindle side. It is a top view of the state which the workpiece holding part of the said 2 spindle turret lathe moved horizontally. It is a top view in the state where the work gripping part of the 2 spindle turret lathe was rotated around the front-rear direction axis.

  Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. In this embodiment, the front and rear mean the front, the back side means the rear, and the left and right mean the left and right as seen from the operator, as viewed from the operator in front of the machine.

  In the figure, reference numeral 1 denotes a two-spindle turret lathe in which turret lathes 2 and 2 configured so as to be symmetrical are arranged adjacent to each other and joined by a bracket 27. Each turret lathe 2 moves in a vertical direction (Y-axis direction) on a bed 3, a column 4 disposed on the bed 3 so as to be movable in the front-rear direction (Z-axis direction), and on the front surface of the column 4 A spindle head 5 supported in a possible manner and a tool post 6 disposed on the operator M side located in front of the machine are provided.

  Each column 4 is supported on a guide rail 7a fixed on the bed 3 so as to be able to move back and forth via a slider 7b. By rotating a ball screw (not shown) by a Z-axis feed motor, the Z-axis direction is supported. It has become freely movable.

  Each spindle head 5 is fixed to a support plate 5a. The support plate 5a is movably supported by a guide rail 8a fixed to the front surface of the column 4 via a slider 8b. The screw is movable in the Y-axis direction by being driven to rotate by the Y-axis feed motor 8c.

  A spindle 9 is rotatably disposed in each spindle head 5, and a chuck 10 for gripping the workpiece W is directed toward the operator M side at a tip portion of the spindle 9 protruding from the spindle head 5. It is installed. The chuck 10 is provided with three sets of gripping claws 10a that can advance and retract in the radial direction. Further, a shielding cover 13 for preventing chips from entering the column 4 side is attached to the tip of the main shaft 9.

The bed 3 is formed so that a tool post installation wall 3a is positioned on the operator M side. The left and right edges of the tool post installation wall 3a are on the column 4 installation part side of the bed 3. Left and right side walls 3b, 3b are formed. A portion surrounded by the left and right side walls 3b and 3b, the tool post installation wall 3a and the shielding cover 13 is a rectangular chip recovery region A in plan view.

A recess 3c for detachably mounting the tool post 6 is formed on the tool post setting wall 3a so as to open upward. A rectangular plate-like support plate 12 that supports the tool post 6 is inserted and disposed in the recess 3c, and is fixed by bolting.

A turret 6 a having a plurality of cutters T on the outer peripheral surface of the tool rest 6 is supported by the support plate 12 so as to be indexable and positionable around an axis parallel to the axis of the main shaft 9. An indexing motor 6b for rotating the turret 6a is mounted on the outer surface.

The two-spindle turret lathe 1 including the left turret lathe 2 and the right turret lathe 2 is surrounded by a common mechanical casing 14. The mechanical casing 14 includes a front wall 15, a back wall 16, left and right walls 17, and a ceiling wall 18, and has a substantially rectangular shape in plan view. A work set-up portion 19 is formed at the center portion in the left-right direction of the front wall 15 so as to bulge toward the front side.

The front wall 15 is composed of a left front wall 15a corresponding to the left turret lathe 2 and a right front wall 15b corresponding to the right turret lathe 2, and the workpiece setup portion 19 is formed of the left front wall 15a. The left setup part 19a formed so that it may wrap with the right half part of this, and the right setup part 19b formed so that it may wrap with the left half part of the said right front wall 15b.

A left setup door 19c and a right setup door 19d are formed in the left setup part 19a and the right setup part 19b, respectively. Furthermore, the left and right accommodation portions 15c and 15d for accommodating the indexing motors 6a and 6a are formed on the left and right sides of the left and right setup portions 19a and 19b so as to bulge toward the front side. Above the left and right accommodating portions 15c and 15d, left and right access doors 15e and 15f that allow access to the tip of the main shaft 9 and the tool post 6 are formed.

A workpiece W is moved between the left and right setup portions 19a and 19b and the chucks 10 and 10 of the left and right spindles 9 in the left and right setup portions 19a and 19b of the mechanical casing 14. Left and right work loading mechanisms 20, 20 are provided. Since the left and right work loading mechanisms 20 and 20 are symmetrical, only the left work loading mechanism 20 will be described below.

The work loading mechanism 20 has an arm portion 22 that can be rotated about a horizontal shaft 22a, and is rotated between the arm portion 22 and a bracket 22b fixed to the tool post setting wall 3a. The cylinder 23 is connected. The arm portion 22 is rotated between the left setup portion 19a side and the main shaft 9 side by expansion and contraction of the rotation cylinder 23.

A support bracket 22c is supported by a guide rail 22d formed at the tip of the arm portion 22 so as to be movable in the horizontal direction, and a horizontal feed cylinder 24 is connected to the support bracket 22c.

Further, a workpiece gripping portion 25 having two sets of chucks 25a and 25b is disposed on the support bracket 22c so as to be rotatable about a front-rear direction shaft 22e. Further, a rotation motor 26 for rotating the work gripping portion 25 is attached to the support bracket 22c.

In this embodiment, the rotating cylinder 23 is contracted, the arm portion 22 is rotated toward the workpiece setup portion 19 side, and the workpiece gripping portion 25 is located in the left setup portion 19a (see FIG. 5). The case where the machined workpiece W is taken out from the spindle 9 and the unmachined workpiece W is attached to the spindle 9 will be described.

First, the operator M opens the left setup door 19c from the outside of the left setup part 19a and attaches the unprocessed work W to the right chuck 25b of the work gripping part 25 located inside.

Next, by extending the rotating cylinder 23, the arm portion 22, and thus the workpiece gripping portion 25 is rotated to the main shaft 9 side (see FIG. 6), and the horizontal feed cylinder 24 is extended to extend the workpiece gripping portion 25. The left chuck 25a is positioned at a position facing the main shaft 9 (see FIG. 7). In this state, the spindle 9 moves to the left chuck 25a side, the gripping claw of the left chuck 25a closes to grip the workpiece W, and then the gripping claw of the chuck 10 on the spindle 9 side opens, The processed workpiece W on the 9th side is transferred to the left chuck 25a.

Further, the rotation motor 26 rotates the workpiece gripping portion 25 so that the right chuck 25b is positioned at a position facing the main shaft 9 (see FIG. 8). In this state, the main shaft 9 moves to the right chuck 25b side, the chuck 10 of the main shaft 9 closes to grip the workpiece, and the grip claw of the right chuck 25b opens, so that the workpiece gripping portion 25 side is not processed. The workpiece W is transferred to the spindle 9.

Subsequently, the rotation motor 26 rotates the workpiece gripping portion 25 to the original position, the horizontal feed cylinder 24 contracts and the rotation cylinder 23 contracts, whereby the workpiece gripping portion 25 rotates to the left setup portion 19a side. It moves and is located in this left setup part 19a. In this state, the operator opens the left setup door 19c to take out the processed workpiece from the left chuck 25a, and attaches an unprocessed workpiece to the right chuck 25b.

Thus, according to the present embodiment, when the main shaft 9 is arranged in the machine casing 14 toward the operator M side, the left setup portion 19a is viewed from the operator M side and the left side of the machine casing 14 is left. The operator M is provided so as to overlap or wrap in the front-rear direction with the right half of the front wall 15a, so that the operator M can use the workpiece gripping portion 25 of the left workpiece loading mechanism 20 in the right half of the left front wall 15a. It is possible to take out the workpiece and set up the workpiece to which the workpiece is attached. Since the access door 15e is provided in the left half of the left front wall 15a, the operator can access the spindle 9 and the tool post 6 from the left front wall 15a. In this way, the operator can access the work setup work and the spindle 9 by moving only the left front wall 15a, and as a result, the operator's flow line can be shortened.

Further, since the work setup work and the access to the spindle 9 and the like can be performed only in the left front wall 15a, the left and right turret lathes 2 and 2 can be arranged with a minimum gap between them, and adjacent turrets can be arranged. There is no need to provide a work space between the lathes 2 and 2, and as a result, it is possible to avoid an increase in the required arrangement space.

Further, since the left setup portion 19a is formed so that the workpiece gripping portion 25 of the workpiece loading mechanism 20 can enter, the operator can determine when the workpiece gripping portion 25 is located in the left setup portion 19a. The workpiece can be attached to or detached from the workpiece gripping portion 25 from the outside of the left setup portion 19a, and the workpiece can be easily attached and detached.

In the above-described embodiment, the workpiece gripping portion 25 is rotated toward the main shaft 9 and then moved in the horizontal direction so that the left chuck 25a of the workpiece gripping portion 25 is positioned so as to face the main shaft 9, Further, the right chuck 25b is positioned so as to face the main shaft 9 by further rotating, but in the present invention, only the operation of rotating the workpiece gripping portion 25 toward the main shaft 9 and the operation of moving the workpiece gripping portion 25 in the horizontal direction are used. 9 may be opposed to the main shaft 9 or may be opposed to the main shaft only by the operation of rotating the work gripping portion 25 toward the main shaft 9 and the operation of rotating around the front-rear direction shaft 22e.

In the above-described embodiment, the workpiece gripping portion 25 is moved to the main shaft 9 side, moved in the horizontal direction, and further rotated around the longitudinal axis 22e in this order. Although the position 25a or 25b is positioned at the workpiece take-out position or the mounting position, the operation order of the work gripping portion 25 in the present invention is not limited, and may be operated in any order. In short, by combining the movement of moving the workpiece gripping portion 25 toward the main shaft 9 side, the movement of moving the workpiece gripping portion 25 in the horizontal direction, and the movement of rotating about the front-rear direction axis, the workpiece gripping portion 25 is moved to the workpiece. What is necessary is just to position in an extraction position or a workpiece | work mounting position.

In the above embodiment, the case of the two-spindle turret lathe 1 formed by connecting the left and right turret lathes 2 and 2 has been described. However, in the present invention, the spindle is placed in the machine casing located on the operator side. The present invention can be applied to any machine tool arranged toward the head.

1 2 Spindle turret lathe 2 Left turret lathe (machine tool)
9 Main spindle 14 Mechanical casing 15a Left front wall 19a Left work setup 20 Left work loading mechanism 22 Arm 22a Horizontal shaft 25 Work gripping part M Operator W Work

Claims (7)

In a machine tool in which the main shaft is arranged facing the operator side in a machine casing having a front wall located on the operator side,
A machine tool, wherein a work setup portion is provided so as to wrap with a part of a front wall of the machine casing as viewed from the operator side. The machine tool according to claim 1,
The workpiece setup portion is formed so that a workpiece gripping portion of a workpiece loading mechanism for mounting a workpiece on the spindle can enter, and when the workpiece gripping portion is located in the workpiece setup portion, the workpiece setup portion is arranged outside the workpiece setup portion. A machine tool characterized in that a workpiece can be supplied to the workpiece gripping part from one side. The machine tool according to claim 2,
The workpiece loading mechanism has an arm portion that can be rotated between the workpiece set-up portion side and the main shaft side about a horizontal axis, and the workpiece gripping portion is provided at a tip portion of the arm portion. A machine tool characterized by The machine tool according to claim 3,
The machine tool characterized in that the workpiece gripping portion is positioned at a workpiece picking position or a workpiece mounting position by moving in the horizontal direction in a state where the arm portion is rotated to the main shaft side. The machine tool according to claim 3,
The workpiece gripping portion is positioned at a workpiece take-out position or a workpiece mounting position by rotating about a front-rear direction axis in a state where the arm portion is rotated to the main shaft side. machine. The machine tool according to claim 3,
By combining the movement of the arm portion rotating to the main shaft side, the movement of the workpiece gripping portion moving in the horizontal direction, and the movement of the workpiece gripping portion rotating about the front-rear direction axis, A machine tool that is positioned at a workpiece removal position or a workpiece mounting position. A machine tool comprising: the machine tool according to any one of claims 1 to 6; and a machine tool arranged so as to be symmetrical with respect to the machine tool when viewed from an operator side. Placement structure.

Images