JP4272759B2 - Processing head device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a machining head device capable of dealing with various workpieces by providing a tool mounted on a spindle shaft so as to be displaceable in a direction substantially perpendicular to the spindle shaft.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, for example, in order to perform various processing on a workpiece, a processing apparatus including a multi-axis head in which various tools are rotatably mounted on a plurality of spindle shafts has been used.
[0003]
In order to cope with machining of a plurality of different types of workpieces in view of diversified machining modes, the present applicant can make some tools variable in a direction substantially perpendicular to the spindle axis to accommodate a plurality of types of workpieces. Has been proposed (see JP-A-6-226597).
[0004]
[Problems to be solved by the invention]
The present invention has been made in connection with the above proposal, and provides a machining head device capable of displacing a tool in a direction substantially perpendicular to the spindle axis with a simple structure without increasing the size of the entire device. The purpose is to provide.
[0005]
[Means for Solving the Problems]
In order to achieve the above-mentioned object, the present invention has a machining head device that can reciprocate on a slide table, and a plurality of spindle shafts that are rotationally driven via a plurality of gear trains on the machining head device. In cutting units provided extending in substantially the same direction ,
Each of the plurality of gear trains is
A spindle gear disposed on the spindle shaft, a first link member to each rotatably supported an idle gear that meshes with the spindle gear,
It said idle gear, and a driving force transmission gear which meshes with the idle gear rotatably and axially supported, and a second link member connected to the first link member the axis of the idle gear as a connecting point,
Individually
Furthermore, a drive gear that meshes with all the driving force transmission gears and that is driven to operate under the action of a rotational drive source;
A housing for pivotally supporting all the driving force transmission gears and the drive gears;
Supports all the first link members, and is integral with the plurality of spindle shafts and all the first link members, substantially perpendicular to the extending direction of the plurality of spindle shafts and transmitting the driving force. A support member movable in a direction toward or away from each of the gears ;
Equipped with a,
As the link angles of all the first link members and all the second link members change following the movement of the support members, the plurality of spindle shafts move in the moving direction of the support members. It characterized that you move in the same direction as the.
[0006]
In this case, it is preferable to provide a fixing means for fixing the support member to the housing of the cutting unit, or to provide a long hole having an axis along the moving direction of the support member.
[0007]
According to the present invention, it is possible to deal with various workpieces by displacing the tool in a direction substantially orthogonal to the spindle axis by a simple structure including the first link member and the second link member.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
A preferred embodiment of a machining head device according to the present invention will be described in detail below with reference to the accompanying drawings.
[0009]
In FIG. 1, reference numeral 10 indicates a machining head device according to an embodiment of the present invention.
[0010]
The machining head device 10 includes a housing 12 provided in a cutting unit (not shown), a drive gear 16 pivotally supported on the housing 12 via a first bearing member 14, and a second bearing member 18a. (18b) via a drive force transmission gear (drive side gear) 20a (20b) which is pivotally supported by the housing 12 and meshes with the drive gear 16, and third bearing members 22a and 22b. It has an idle gear 24a (24b) that is pivotally supported and meshes with the driving force transmission gear 20a (20b), and a spindle gear 26a (26b) that meshes with the idle gear 24a (24b).
[0011]
The drive gear 16 is transmitted with the rotational drive force of the rotational drive source 28 via a transmission mechanism (not shown). The machining head device 10 includes a slide table (not shown) that is slidable under the guiding action of a guide means (not shown), and the housing 12 can be moved forward and backward in the direction of the arrow X integrally with the slide table. Is provided.
[0012]
Further, the machining head device 10 includes a first link member 30a (30b) that links the spindle gear 26a (26b) and the idle gear 24a (24b), the idle gear 24a (24b), and the driving force transmission gear 20a ( 20b) and the second link member 32a (32b), which supports the first link member 30a (30b), and the first link member 30a (30b). And a support member 34 provided so as to be freely displaceable.
[0013]
The second link member 32a (32b) is formed with a pair of cylindrical protrusions 36a, 36b protruding along the axial direction, and the pair of protrusions 36a, 36b is the first link member 30a (30b). The first link member 30a (30b) and the second link member 32a (32b) are pivotally connected to each other about the axis of the idle gear 24a (24b). Has been. In this case, since the driving force transmission gear 20a (20b) is fixed to the housing 12 via the second bearing members 18a and 18b, the second link that pivotally supports the driving force transmission gear 20a (20b). One end of the member 32a (32b) is fixed to the housing 12 side.
[0014]
A clearance 40 is formed between the support member 34 and the housing 12, and the support member 34 is provided so as to be movable up and down along the vertical direction with respect to the housing 12 via the clearance 40. As shown in FIGS. 2 and 3, the support member 34 has a plurality of long holes 42 formed substantially parallel to each other at a predetermined interval, and engages with the long holes 42 so that the housing 12 is not shown. The support member 34 is fixed at a predetermined position through a screw member 44 screwed into the screw hole.
[0015]
A spindle shaft 46 that rotates integrally with the spindle gear 26a (26b) is coaxially fitted in the spindle gear 26a (26b), and the spindle shaft 46 is rotatable via a bearing member (not shown). A desired tool 48 is exchangeably mounted on the spindle shaft 46 while being supported by the shaft.
[0016]
A positioning member 50a for positioning the supporting member 34 provided so as to be displaceable along the vertical direction is provided on the lower side of the supporting member 34 (see FIG. 1). The positioning member 50 a is integrally formed with a shaft portion 54 that is mounted in the hole 52 of the housing 12 and a disc portion 56 that supports the support member 34. In this case, it is preferable to prepare a plurality of positioning members 50a to 50c having a disk portion 56 having a diameter corresponding to the displacement amount of the support member 34 (see FIGS. 2 and 3). 2 and 3, the drive gear 16 is shown between the pair of driving force transmission gears 20a and 20b for convenience of explanation.
[0017]
The machining head device 10 according to the embodiment of the present invention is basically configured as described above. Next, the operation, action, and effect will be described.
[0018]
The drive gear 16 rotates in a predetermined direction under the driving action of the rotational drive source 28, and the rotational driving force is transmitted to the driving force transmission gear 20a (20b) meshing with the drive gear 16, and further, the driving force transmission gear 20a. Is transmitted to the spindle gear 26a (26b) via the idle gear 24a (24b) meshing with (20b). When the spindle gear 26a (26b) rotates in a predetermined direction, a tool 48, for example, a drill, mounted on the spindle gear 26a (26b) via the spindle shaft 46 rotates.
[0019]
In this way, the housing 12 advances integrally with a slide table (not shown) under the rotating action of the tool 48, so that the tool 48 approaches a workpiece (not shown) positioned at a predetermined position and Desired processing is performed. After the machining operation on the workpiece is completed, the housing 12 moves backward integrally with a slide table (not shown), so that the tool 48 is separated from the workpiece and enters a standby state for the next process.
[0020]
Next, for example, when processing the same workpiece as described above on a different processing site, or when processing a plurality of different types of workpieces different from the above, the support member 34 is moved up and down the housing 12. The support member 34 is fixed by a screw member 44 that is displaced to a desired position along the direction and engages with the long hole 42. 2 shows a case where the support member 34 is displaced to the lowermost position, and FIG. 3 shows a case where the support member 34 is displaced to the uppermost position. Therefore, the support member 34 has a desired position within the range of the uppermost end position and the lowermost end position along the vertical direction via the positioning members 50a to 50c having the disk portions 56 each having a diameter corresponding to the amount of displacement. Can be positioned.
[0021]
By displacing the support member 34 along the vertical direction, the first link member 30a (30b) supported by the support member 34 moves integrally with the support member 34, whereby the first link member 30a (30b) is moved. ) And the link angle of the second link member 32a (32b) changes. In this case, since the driving force transmission gear 20a (20b) that supports one end of the second link member 32a (32b) is held on the housing 12 side, one end of the second link member 32a (32b) is fixed. ing.
[0022]
In the present embodiment, the spindle gear 26a (26b), the idle gear 24a (24b), and the driving force transmission gear 20a (20b) are connected via the first link member 30a (30b) and the second link member 32a (32b). By linking each, and changing the link angle between the first link member 30a (30b) and the second link member 32a (32b) with the axis (rotation center) of the idle gear 24a (24b) as the link point, the spindle shaft The tool 48 attached to 46 can be displaced by a predetermined interval along the vertical direction.
[0023]
The axis of the long hole 42 formed in the support member 34 is inclined at a predetermined angle, for example, or is formed along a substantially horizontal direction so that the support member 34 is inclined not only in the vertical direction but also at a predetermined angle. It can be displaced in all directions such as an oblique direction or a substantially horizontal horizontal direction.
[0024]
Thus, in the present embodiment, the first link member 30a (30b) and the second link member 32a that link the spindle gear 26a (26b), the idle gear 24a (24b), and the driving force transmission gear 20a (20b), respectively. By providing (32b), it can be displaced in a direction substantially orthogonal to the axis of the spindle shaft 46 with a simple structure. Further, in this embodiment, since the number of spindle heads is not increased, the entire apparatus is not increased in size, and the size and weight can be reduced, and the manufacturing cost can be reduced.
[0025]
【The invention's effect】
According to the present invention, the following effects can be obtained.
[0026]
That is, by providing the first link member and the second link member that link the spindle gear, the idle gear, and the driving force transmission gear, respectively, it is possible to displace in a direction substantially orthogonal to the spindle shaft with a simple structure.
[0027]
Further, since the number of spindle heads is not increased, the entire apparatus is not increased in size, and the size and weight can be reduced, and the manufacturing cost can be reduced.
[Brief description of the drawings]
FIG. 1 is a schematic longitudinal sectional view of a machining head device according to an embodiment of the present invention.
FIG. 2 is an explanatory view showing a state in which a support member constituting the machining head device is displaced to a lowermost position.
FIG. 3 is an explanatory view showing a state where the support member is displaced to the uppermost position.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 ... Processing head apparatus 12 ... Housing 14, 18a, 18b, 22a, 22b ... Bearing member 16 ... Drive gear 20a, 20b ... Driving force transmission gear 24a, 24b ... Idle gear 26a, 26b ... Spindle gear 30a, 30b, 32a, 32b ... Link member 34 ... Support member 36a, 36b ... Projection 38 ... Hole 40 ... Clearance 42 ... Long hole 44 ... Screw member 46 ... Spindle shaft 48 ... Tools 50a-50c ... Positioning member

Claims (4)

Cutting having a machining head device reciprocally movable on a slide table, and a plurality of spindle shafts that are driven to rotate through a plurality of gear trains extending in substantially the same direction. In the processing unit,
Each of the plurality of gear trains is
A spindle gear disposed on the spindle shaft, a first link member to each rotatably supported an idle gear that meshes with the spindle gear,
It said idle gear, and a driving force transmission gear which meshes with the idle gear rotatably and axially supported, and a second link member connected to the first link member the axis of the idle gear as a connecting point,
Individually
Furthermore, a drive gear that meshes with all the driving force transmission gears and that is driven to operate under the action of a rotational drive source;
A housing for pivotally supporting all the driving force transmission gears and the drive gears;
Supports all the first link members, and is integral with the plurality of spindle shafts and all the first link members, substantially perpendicular to the extending direction of the plurality of spindle shafts and transmitting the driving force. A support member movable in a direction toward or away from each of the gears ;
Equipped with a,
As the link angles of all the first link members and all the second link members change following the movement of the support members, the plurality of spindle shafts move in the moving direction of the support members. processing head and wherein that you move in the same direction as the. The processing head device according to claim 1,
As all the second link members rotate in the same direction, the link angle changes, and as the link angle of the second link member changes, all the first link members move in the same direction. A machining head device characterized in that the link angle changes by rotating. The apparatus according to claim 1 or 2 ,
A machining head device comprising a fixing means for fixing the support member to a housing of a machining unit. 4. The processing head device according to claim 1, wherein the support member is provided with a long hole having an axis along the moving direction of the support member.

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