JP3684100B2 - Simple drilling unit - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a simple drilling unit used when processing work such as drilling and screwing on a non-metal workpiece such as metal, wood, and synthetic resin.
[0002]
[Prior art]
Conventionally, as a mechanical equipment used for processing such as drilling and screw stand on a large workpiece such as metal, wood, and synthetic resin, a universal joint type (gang Head) Multi-axis drilling machines are manufactured and used in general.
This facility has a structure in which the driving force of the motor 101 is transmitted from one input shaft 102 to each shaft by a clutch 103, a gear 104, a universal joint 105, and the like.
However, when working with the universal joint type (gang head) multi-axis drilling machine 100, there are the following problems.
1) A large number of gears are required to transmit the rotational force to the universal joint, resulting in an increase in the number of parts and the size of the apparatus.
2) Since the multi-axis head 106 has a structure for transmitting the rotational force from one input shaft 102 to each axis by the gear 104 or the universal joint 105, even if a problem occurs in one machining axis, it is necessary to repair it. It takes time and effort.
3) Since the machining tool is fixed integrally with the multi-axis head 106, the multi-axis head 106 must be replaced.
There was a problem such as.
[0003]
Therefore, in order to solve these problems and to make the multi-axis drilling machine compact, and to enable simple repair maintenance in units of machining units from complicated maintenance, FIG. 5 (a) and FIG. 5 (b) A machining tool as shown in FIG.
This processing tool is supported by a main body case 108 and a main shaft 109 that is rotatably supported by bearings 109a and 109b in the main body case 108, one end protrudes from the main body case 108, and a rotary tool is mounted on the tip. A cluster gear 111 that meshes and transmits a driving force from the electric motor 115 to a driven gear 110 provided at the other end of the main shaft 109; and an electric motor portion provided on the opposite side of the shaft of the cluster gear 111. A main shaft portion S ′ having an interlocking mechanism formed by a drive gear 112 that meshes with a main gear 113 of M ′, an electric motor portion M ′ that generates a driving force of the main shaft portion S ′, and the electric motor portion M ′ The main part is composed of a lead wire 116 for supplying electric power to the electric motor 115.
In the conventional machining tool having the above configuration, when electric power is supplied from the lead wire 116, the electric motor 115 rotates, and the driving force is transmitted from the main gear 113 provided at the end of the motor shaft 114 to the drive gear 112. The driving force is further transmitted from the cluster gear 111 provided on the opposite side of the shaft of the drive gear 112 to the driven gear 110, and a workpiece is processed by rotating a rotating tool (not shown) attached to the tip of the main shaft 109. Can do.
[0004]
However, when using the machining tool, there are the following problems.
1) When a design change occurs in the workpiece, select the electric motor that makes the rotation speed of the main spindle the rotation speed suitable for the rotary tool (optimal cutting speed) or obtains the rotation speed suitable for the rotary tool. I can't.
2) When a plurality of machining steps such as drilling and screw stand are continuously performed, the machining tools are required by the number of machining operations, and the machining cost is increased.
In addition, as shown in FIG. 6, when a plurality of processing tools are fixed to the fixed base 117 and processed,
3) Since a mounting space between the fixing bases 117 necessary for fixing the processing tool is required, it is difficult to process a tool having a relatively small processing shaft pitch.
4) When exchanging the spindle part S ′ or the electric motor part M ′ of the machining tool, it takes time and effort to remove the machining tool from the fixed base 117.
There was a problem such as.
[0005]
[Problems to be solved by the invention]
The present invention has been made in order to solve the above-described problem, and is easy to cope with even if a design change occurs in the workpiece, and has a large range in which the number of rotations of the rotary tool can be changed. It is an object of the present invention to provide a simple drilling unit that does not take time and labor to replace.
[0006]
[Means for Solving the Problems]
The gist of the invention described in claim 1 for solving the above-mentioned problem is that the main mechanism ( 2) for mounting the rotary tool (D) at the tip is linked to a rotary drive source at the rear end (F). a main shaft provided with a (S), a rotating shaft main gear (8) is mounted which meshes with the interlocking mechanism (F) of the main shaft portion (S), an electric motor with a built-in electric motor (10, 11) The portion (M) is disposed between the main shaft portion (S) and the electric motor portion (M), and the main shaft portion (S) and the electric motor portion (M) are coupled to be separable. to, a joint portion having a flange portion (16) and (F), simplified drilling unit composed of (23a, 23b, 23c), said flange portion (16), the mounting plate (P) Mounting holes (18 for passing bolts through the bolt holes provided in Characterized in that it has a.
By providing the flanged joint part, the main shaft part and the electric motor part can be connected and separated. Therefore, when a problem occurs, it can be dealt with only by exchanging either the main shaft part or the electric motor part. In addition, even if there is a design change, it can be easily handled.
[0007]
DETAILED DESCRIPTION OF THE INVENTION
A simplified drilling unit according to the present invention will be described with reference to the drawings. 1 (a) is a front longitudinal sectional view of a simplified drilling unit according to the present invention, and FIG. 1 (b) is a left side view of the simplified drilling unit according to the present invention, FIG. 1 (c), FIG. 2A is a front view of a simplified drilling unit according to the present invention, and FIG. 2A is a view showing a fixing method when a simplified drilling unit with a flange attached is fixed to a mounting plate from the main shaft side; FIG. 2 (b) is a diagram showing a fixing method when the simplified drilling unit with a flange attached is fixed to the mounting plate from the electric motor side, and FIG. 2 (c) is the electric motor of FIG. 2 (b). It is a figure which shows the fixing method at the time of providing a spacer (spacer) in the part side and fixing a simple type drill processing unit. FIG. 3 is a view showing an embodiment in which a workpiece is machined by fixing a plurality of simplified drilling units according to the present invention to a mounting plate having a feed mechanism.
[0008]
As shown in FIG. 1 (a), a simplified drilling unit according to the present invention includes a main shaft 2 on which a rotary tool is mounted at the front end, and a main shaft 2 provided with a driving mechanism at the rear end of the main shaft 2. An electric motor unit M having a built-in electric motor, and a rotating shaft to which a main gear 8 meshing with the interlocking mechanism of the main shaft unit S is mounted; and between the main shaft unit S and the electric motor unit M The main part is composed of a flanged joint part F that is connected to each other so as to be connected and separable.
[0009]
The main shaft portion S includes the main shaft 2 and an interlocking mechanism.
The main shaft 2 is a substantially cylindrical shaft. The main shaft case 1 is rotatably supported in the axial direction of the main shaft case 1 by bearings 2a and 2b. One end of the spindle 2 protrudes from the spindle case 1 for mounting a rotary tool. A driven gear 3 for receiving a driving force from the cluster gear 4 is provided at the other end of the main shaft 2.
The interlocking mechanism is installed in a half space in the radial direction of the main shaft case 1 and meshes and transmits the driving force from the electric motor unit M to the driven gear 3 provided on the other shaft of the main shaft 2. The cluster gear 4 and a drive gear 5 provided on the opposite side of the shaft supported by the bearing 6 provided with the cluster gear 4 are formed.
[0010]
Further, a female screw portion N for screwing with the male screw portion O of the flanged joint portion F is provided on the inner side of the main shaft case 1 on the drive gear 5 side.
[0011]
The electric motor unit M includes a motor shaft 9 rotatably supported by bearings 9a and 9b in a motor case 7, a stator 10 that generates a magnetic field for rotating the motor shaft 9, and the motor. An electric motor formed from a rotor 11 fixed to the shaft 9 and rotating in a magnetic field, and a terminal holder 13 for storing a terminal block 15 of a lead wire 14 for supplying electric power to the electric motor are formed.
[0012]
The motor shaft 9 is a substantially cylindrical shaft, and is rotatably supported in the motor case 7 by bearing bearings 9 a and 9 b in the axial direction of the motor case 7. One end of the motor shaft 9 is provided with a main gear 8 that meshes with the drive gear 5 of the main shaft portion S to transmit the driving force of the electric motor, and the main gear 8 protrudes from the motor case 7. The other end of the motor shaft 9 is supported by a bearing bearing 9 b provided in the bearing holder 12.
A rotor 11 is fixed at a substantially middle portion of the motor shaft 9, and a stator 10 that generates a magnetic field for rotating the motor shaft 9 extends along the inner periphery of the motor case 7. Is provided.
[0013]
A terminal holder 13 is provided adjacent to the right side of the bearing holder 12 and stores a terminal block 15 of a lead wire 14 that supplies electric power to the electric motor.
[0014]
On the inner side of the motor case 7 on the main gear 8 side, a female screw portion N ′ for screwing with the male screw portion O ′ of the flanged joint portion F is provided.
[0015]
The flanged joint portion F is disposed substantially in the middle of the simplified drilling unit, and male screw portions O and O ′ for connecting the main shaft portion S and the electric motor portion M are provided at both ends with the flange 16 interposed therebetween. . The male screw portions O and O ′ are respectively a female screw portion N provided inside the main shaft case 1 of the main shaft portion S and a female screw portion N ′ provided inside the motor case 7 of the electric motor portion M. Screwed.
Around the flange 16, there are provided a plurality of mounting holes 18 that are used when a plurality of simplified drilling units are fixed to the mounting plate.
[0016]
The operation when the main shaft portion S and the electric motor portion M of the simplified drilling unit according to the present invention having the above-described configuration are connected by the joint portion F with flange will be described. When electric power is supplied from the lead wire 14, the stator 10 of the electric motor is excited, and the rotor 11 fixed to the motor shaft 9 rotates. The main gear 8 provided at the end of the rotating motor shaft 9 transmits a driving force to the drive gear 5 of the main shaft S that meshes with the main gear 8.
Further, the drive gear 5 transmits a driving force to the cluster gear 4 provided on the opposite side of the shaft of the drive gear 5, and the cluster gear 4 further transmits the driving force to the driven gear 3 that meshes therewith. (The cluster gear 4 is a gear having a predetermined number of rotations suitable for the rotary tool with respect to the number of teeth of the driven gear 3). The driving force transmitted to the driven gear 3 processes the workpiece by rotating a rotary tool mounted on the spindle 2 (not shown) via the driving force transmission path as described above. be able to.
[0017]
Next, the shape of the flange of the simplified drilling unit according to the present invention will be described with reference to FIG.
The flange of the simplified drilling unit according to the present invention, a through hole for attachment to the mounting plate simplified drilling unit is provided a plurality. These through-holes are usually circular holes larger than the diameter of the bolt to be attached. However, when the attachment plate is provided with screw holes for attachment bolts, the through-holes may be screw holes to be screwed with the attachment bolts.
Normally, when using a single simple drilling unit, the flange shape can be manufactured at low cost because an off-the-shelf product can be used if it is a disc-shaped flange.
FIG. 1 (c) shows a front outline view of a simplified drilling unit according to the present invention.
[0018]
Next, a fixing method for fixing the flange of the simplified drilling unit according to the present invention to the mounting plate will be described with reference to FIG.
FIG. 2A shows a fixing method in the case where the simplified drilling unit with the flange attached is fixed to the attachment plate P from the main shaft portion S side.
By mounting in this way, the type of the main shaft portion S can be easily exchanged on the main shaft portion S side while the electric motor portion M side is mounted on the mounting plate P. A state when the main shaft portion S on the main shaft portion S side is removed is indicated by a two-dot chain line.
Moreover, the figure which shows the fixing method at the time of fixing the simple drill processing unit which provided the flange from the electric motor part side is shown in FIG.2 (b). By attaching in this way, the electric motor on the electric motor part M side can be easily replaced with the motor case while the main shaft part S side is fixed to the attachment plate P. Therefore, it is possible to easily replace the motor with an electric motor having a different electric capacity or an electric motor having a rotation speed suitable for the rotary tool to be used.
Furthermore, when the processed surface of the workpiece is not coplanar and has irregularities, as shown in FIG. 2 (c), by providing a spacer (spacer) R between the flange and the mounting plate P, The distance from the rotary tool D can also be adjusted.
In FIG. 2C, the spacer (spacer) R is provided on the electric motor M side, but the spacer (spacer) R may be provided on the main shaft S side.
[0019]
As described above, by fixing the simplified drilling unit provided with the flanged joint portion F to the mounting plate P,
1) Since the main shaft portion S and the electric motor portion M of the simplified drilling unit can be connected and separated by the flanged joint portion F, the main shaft portion S can be used even if the design changes. On the side, the type of rotary tool can be changed, or the number of rotations of the spindle suitable for the rotary tool can be set.
Further, on the electric motor unit M side, the electric motor can be replaced with an electric motor that can obtain a rotation speed suitable for the rotary tool.
2) When a plurality of machining processes such as drilling and screw stand are continuously performed, machining tools are required for the number of machining processes, but the main spindle S and the electric motor M of the simplified drilling unit are flanged. Since the joint portion F can be connected and disconnected, the machining tools can be easily replaced in a short time, and the number of machining tools can be reduced compared to the number of machining steps, resulting in cost savings.
[0020]
【Example】
Next, an example of machine equipment when machining a large workpiece by attaching a plurality of simplified drilling units according to the present invention to a mounting plate like a multi-axis head of a multi-axis machine tool is illustrated. This will be described with reference to FIG.
In addition, the capability of the electric motor of the electric motor unit and the number of rotations of the tool attached to the main shaft of the main shaft were used in combination as required according to the machining specifications.
The equipment of the example is
A workpiece 21 fixed to the base 19 with a fixture 20, and
A mounting plate 22 on which a large number of simplified drilling units 23a, 23b, 23c arranged perpendicularly to a cradle 24 facing the workpiece 21 are disposed;
Rails 25 are provided below both end portions of the mounting plate 22 in the longitudinal direction so as to be parallel to the longitudinal direction of the mounting plate 22 and slide the receiving table 24 forward and backward. , 25 and
A spiral rod 26 having one end screwed to the lower part of the cradle 24 and a servo motor 27 for positioning the other end; a servo motor 27 for supplying a driving force for rotating the spiral rod 26;
Consists of
[0021]
A processing method for processing a workpiece with the present equipment having the above-described configuration will be described.
1) The workpiece 21 is fixed to the base 19 with the fixture 20.
2) A plurality of simple drilling units 23 a, 23 b, 23 c equipped with a rotary tool suitable for machining work are attached to the mounting plate 22 and fixed.
When the processed surface of the workpiece is uneven and not on the same plane, the processing position can be adjusted by providing a spacer (spacer) R between the mounting plate 22 and the flange as shown in FIG.
3) The servo motor 27 is turned on. By rotating the spiral rod 26 to the right when the workpiece 21 is viewed from the servo motor 27 side, the cradle 24 slides on the rails 25 and 25, and the attachment plate 22 approaches the workpiece 21.
4) Turning on the power of the simple drilling units 23a, 23b, and 23c.
5) The rotary tools mounted on the simple drilling units 23a, 23b, and 23c rotate and simultaneously start processing on the workpiece.
6) When the mounting plate 22 moves forward to a predetermined position and the processing operation of the workpiece is completed, the cradle 24 is rotated by rotating the spiral rod 26 counterclockwise while viewing the workpiece 21 from the servo motor 27 side. Sliding on the rails 25, 25, the mounting plate 22 moves backward from the workpiece 21.
7) Simple drilling units 23a, 23b, all the tip of the rotating tool mounted on 23c workpiece Once away from 21 Simple drilling units 23a, 23b, 23c supply OFF.
8) Turn off the servo motor power.
9) Remove the fixture 20 and remove the workpiece 21 from the base 19.
As explained above, if this equipment is operated, a workpiece of any shape can be easily processed.
[0022]
Thus, the following effects can be obtained by using a plurality of simplified drilling units according to the present invention attached to the mounting plate 22.
1) It is not necessary to remanufacture the mounting plate 22 even if the processing size changes in the workpiece.
2) When a problem occurs, it is only necessary to replace one processing tool, so that the influence on the production line can be minimized.
3) A multi-axis head type machine tool capable of handling holes (holes) with a relatively small shaft pitch can be provided.
[0023]
The multi-axis machine tool provided with a plurality of simplified drilling units according to the present invention shows a horizontal multi-axis drilling machine as shown in FIG. 3 in the embodiment. Needless to say, it can also be used as a vertical multi-axis drilling machine in which a plurality of simple drilling units are vertically fixed and fixed to a multi-axis head so that the multi-axis head can be moved up and down.
[0024]
【The invention's effect】
According to the present invention having the above configuration and operation,
1) Since the spindle part S and the electric motor part M of the simplified drilling unit can be connected and separated by the flanged joint part F, the type of spindle part can be changed even if the design changes in the workpiece. Or the number of rotations of the spindle suitable for the rotary tool. Further, on the electric motor unit M side, the electric motor can be replaced with an electric motor that can obtain a rotation speed suitable for the rotary tool.
2) Although machining tools are required for the number of machining operations when performing a plurality of machining operations such as drilling, screw stand, etc., the spindle part S and electric motor part M of the simple drilling unit are joints with flanges. Since it can be connected and separated by the part F, the simple drilling unit can be easily replaced in a short time, and the number of simple drilling units can be reduced as compared with the number of machining operations, thereby reducing the cost.
3) When a problem occurs, it is only necessary to replace one simple drilling unit, so that the influence on the production line can be minimized.
4) When machining a large workpiece by attaching multiple simple drilling units to the mounting plate,
A. The driving source of each simplified drilling unit is independent.
B. Both the front side and the rear side of the flange of the simple drilling unit can be fixed to the mounting plate.
C. A spacer (spacer) can be provided between the mounting plate and the flange to adjust the shaft allowance.
Therefore, it can respond to workpieces of any shape.
[Brief description of the drawings]
FIG. 1 (a) is a front longitudinal sectional view of a simplified drilling unit according to the present invention.
(B) It is a left view of the simple type drill processing unit which concerns on this invention.
(C) It is a front external view of the simple type drill processing unit which concerns on this invention.
FIG. 2A is a view showing a fixing method when a simplified drilling unit with a flange attached is fixed to a mounting plate from the main shaft side.
(B) It is a figure which shows the fixing method at the time of fixing the simple drill processing unit which attached the flange to the attachment plate from the electric motor part side.
(C) It is a figure which shows the fixing method at the time of providing a spacer (spacer) in the electric motor part side of FIG.2 (b), and fixing a simple type drill processing unit.
FIG. 3 is a view showing an embodiment when a workpiece is machined by fixing a plurality of simplified drilling units according to the present invention to a mounting plate having a feed mechanism.
FIG. 4 is a view showing a universal joint type (gang head) multi-axis drilling machine in which a plurality of conventional simple drilling units are fixed to a multi-axis head.
FIG. 5A is a front longitudinal sectional view of a conventional machining tool.
(B) It is a front external view of the conventional processing tool.
FIG. 6 is a diagram showing a state where a plurality of conventional processing tools are fixed to a fixed base and a workpiece is processed.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Main shaft case 2 Main shaft 3 Driven gear 4 Cluster gear 5 Drive gear 6 Bearing bearing 7 Motor case 8 Main gear 9 Motor shaft 10 Stator 11 Rotor 12 Bearing holder 13 Terminal holder 14 Lead wire 15 Terminal block 16 Flange 18 Mounting hole 19 Base 20 Fixing tool 21 Workpiece 22 Mounting plate 23a, 23b, 23c Simplified drilling unit 24 Base 25 Rail 26 Spiral rod 27 Servo motor S, S 'Main shaft part F Flange joint part M, M' Electric motor Part R Spacer (Spacer)
P Mounting plate D Rotating tool O, O 'Male thread N, N' Female thread

Claims (1)

A main shaft portion (S) provided with an interlocking mechanism (F) with a rotation drive source at the rear end of the main shaft (2 ) on which the rotary tool (D) is mounted;
An electric motor section (M) having a rotating shaft to which a main gear ( 8) meshing with the interlocking mechanism (F ) of the main shaft section (S) is mounted, and including an electric motor (10, 11) ;
It is disposed between the main shaft portion (S) and the electric motor (M), for coupling and detachably coupling the main shaft portion (S) and the electric motor unit (M), the flange portion (16 ) A joint part (F) having
A simple drilling unit (23a, 23b, 23c) comprising:
The flange portion (16) has a mounting hole (18) for passing a bolt in a bolt hole provided in the mounting plate (P), and a simplified drilling unit (23a, 23b, 23c) )

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