WO2015141898A1

WO2015141898A1 - Automatic machine processing device

Info

Publication number: WO2015141898A1
Application number: PCT/KR2014/005990
Authority: WO
Inventors: 배기호; 최덕수
Original assignee: 주식회사 성남전자; 배기호
Priority date: 2014-03-20
Filing date: 2014-07-04
Publication date: 2015-09-24
Also published as: KR101443294B1

Abstract

Disclosed is an automatic machine processing device for automatically performing a machine processing work of the same kind to a plurality of working materials simultaneously when the plurality of working materials is transferred along a certain path and stopped in a predetermined position of the path. The disclosed automatic machine processing device comprises: a transferring unit for moving the plurality of working materials sequentially to a loading position where the plurality of working materials is positioned adjacently, to at least one processing position where the adjacently positioned plurality of working materials is mechanically processed simultaneously, and to an unloading position where the plurality of working materials is detached; and at least one processing unit including a plurality of tools for mechanically processing the plurality of working materials which is stopped at at least one processing position, wherein each at least one processing unit further comprises: one motor; a plurality of tool-rotating shafts which are rotated by the power of the motor so as to rotate a plurality of tools, and at the lower end of which the plurality of tools is fixed one by one; and a head box for supporting the plurality of tool-rotating shafts.

Description

Automatic machining equipment

The present invention relates to a machining apparatus for machining a work material such as a metal sheet or plastic injection molding, and more particularly, an automatic machining device in which the work material is transferred along a predetermined path and at least one machining operation is automatically performed. It is about.

Machining is a process of deforming a shape or a property by applying pressure, heat, or the like to a solid material, and includes cutting, pressing, heat treatment, and the like. Materials such as sheet metal and plastic injection molding are used to make a number of products, including mobile phones. These materials are subjected to machining such as, for example, drilling to form a circular through hole, tapping to form a female thread, and milling to cut the surface to form an intermediate of the final product. .

Conventionally, when performing a plurality of types of processing operations for one processing material, the processing material is loaded in one processing machine to complete one operation. Thereafter, the processing material is transferred to another processing machine and loaded to complete another operation. For example, when the female screw is to be formed on the metal sheet, the metal sheet is loaded into a drilling machine to drill a circular hole in the metal sheet. Thereafter, the sheet metal material is transferred to a tapping machine and loaded to form a female thread in the circular hole. This lowers work productivity.

The present invention provides an automatic machining apparatus in which a plurality of work materials are conveyed along a certain path and automatically perform the same kind of machining work on the plurality of work materials simultaneously when stopped at a predetermined point on the path.

The automatic machining apparatus of the present invention includes a conveying unit and at least one machining unit. The conveying unit sequentially moves the plurality of working materials to a loading position, a machining position and an unloading position. In the loading position a plurality of working materials are placed next to each other. In the machining position, a plurality of working materials placed adjacent to each other are machined simultaneously. The unloading position is detached from the plurality of working materials. At least one machining unit comprises a plurality of tools. The tool machines a plurality of working materials stopped at the at least one machining position.

Each of the at least one machining unit includes a motor, a plurality of tool rotation shafts that rotate by the power of the motor to rotate the plurality of tools, and a head box that supports the plurality of tool rotation shafts. (head box). The plurality of tools are fixed to the lower end of the tool rotating shaft one by one.

The head box may include a top panel and a bottom panel spaced apart from each other, and a plurality of columns connecting the top panel and the bottom panel to maintain a gap therebetween.

In addition, each of the plurality of tool rotating shafts may include an upper shaft member, a lower shaft member, a first universal joint, a second universal joint, an intermediate shaft member, and a spindle. An upper shaft member is inserted into the upper panel. The lower shaft member penetrates through the lower panel. A first universal joint is fastened to the lower end of the upper shaft member. The second universal joint is fastened to the upper end of the lower shaft member. An intermediate shaft member has an upper end coupled to the first universal joint, and a lower end coupled to the second universal joint and connected to the upper shaft member and the lower shaft member. The tool is fixedly fastened to the tool provided at the lower end of the lower shaft member. In this case, the upper axis extending in the longitudinal direction of the upper shaft member and the lower axis extending in the longitudinal direction of the lower shaft member may be configured to be parallel to each other but not overlap.

The head box may include a gear assembly that transmits rotational force of the motor to the plurality of tool rotation shafts inside the upper panel. In this case, the gear assembly includes at least one central gear, a first connecting gear, a second connecting gear, and a plurality of tool turning gears. The central gear is directly connected to the rotating shaft by the power of the motor. The first connecting gear is driven to rotate the rotation of the center gear, and is disposed on the outer periphery of the center gear. The second connecting gear is driven by rotation of the plurality of first connecting gears, and is spaced farther from the central gear than the first connecting gear. A plurality of tool turning gears are meshed with the plurality of second connecting gears, at least one of which is disposed on an outer periphery of each of the plurality of second connecting gears, and is coupled to the upper shaft member so that the tool rotating shaft rotates. .

At least one of the plurality of tool turning gears may be engaged with the first connecting gear to transfer the rotational force of the first connecting gear to the second connecting gear.

The plurality of working materials may be provided in a pair, and the plurality of first connecting gears and the plurality of second connecting gears may each be provided in two pairs. In this case, a plurality of tool turning gears meshed with a pair of second connecting gears of the two pairs of second connecting gears transmit the rotational force of the motor to a tool for machining the working material of one of the pair of working materials. In addition, a plurality of tool turning gears meshed with another pair of second connecting gears of the two pairs of second connecting gears machine a tool for machining another working material of the pair of working materials. It may be configured to transmit the rotational force of the motor to the tool.

The intermediate shaft member may include a cylinder, a rod, and a length adjusting means. The upper end of the cylinder is fastened to the first universal joint. The rod has a lower end coupled to the second universal joint and an upper end inserted into the cylinder. The length adjustment means changes the length of the intermediate shaft member by adjusting the length in which the rod is inserted into the cylinder. In this case, the length adjusting means is formed on an inner circumferential surface of the rod and spaced apart in the longitudinal direction of the rod and the elastic ball (elastic ball) elastically biased (elastic bias) in a direction projecting toward the center of the cylinder It may be configured to have a plurality of mounting grooves dug to be seated when the elastic ball is protruded.

The transfer unit may comprise a transfer rail, a moving bar, and a plurality of material holders. The conveying rail extends along the direction in which the plurality of working materials move. A moving bar extends in parallel with the conveying rail and alternates forward and backward alternately by the distance between a pair of adjacent positions of the loading position, the at least one machining position, and the unloading position. . A plurality of material holders are provided in the moving bar to hold the plurality of working materials in the loading position and the at least one processing position, and the moving bar is placed in the loading position and the at least one processing position when the moving bar is advanced. The plurality of working materials is transferred to the next position.

The transfer unit may further include a material lifter for supporting and elevating the plurality of working materials at the loading position and the at least one machining position. When the plurality of working materials are lowered by the material lifter, the plurality of work materials are caught by the plurality of material holders, the moving bar is advanced, and the plurality of work materials are advanced, and the plurality of work materials are moved by the material lifter. As the material rises, the plurality of working materials may be disengaged from the plurality of material holders and the moving bar may be configured to retract separately from the plurality of working materials.

The at least one machining unit includes a drilling unit having a drill for drilling through holes in the plurality of working materials as the tool, and the at least one machining position is machined by the drilling unit. This drilling position may be included.

The at least one machining unit includes a tapping unit provided with a tap as a tool for forming a female screw thread on an inner circumferential surface of the through hole formed in the plurality of working materials by the drill. The tapping position at which the machining by the tapping unit is performed may be included in the at least one machining position.

The at least one machining unit includes a milling unit having a milling cutter as the tool for cutting the surfaces of the plurality of working materials to remove projections or forming grooves, the at least One machining position may include a milling position in which machining by the milling unit is performed.

According to the present invention, since a plurality of working materials are transported along a predetermined path and at least one machining operation is performed, work speed and productivity are improved, and labor costs are high because only one worker is responsible for performing the work. Savings.

In addition, according to the present invention, when a machining operation such as drilling is to be performed at various points of a plurality of working materials, a plurality of similar tools can be configured to operate simultaneously with the power of one motor. The production cost and power consumption of automatic machining equipment can be reduced.

1 is a front view schematically showing an automatic machining apparatus according to an embodiment of the present invention.

FIG. 2 is a plan view of the transfer unit of FIG. 1. FIG.

3 is a longitudinal cross-sectional view taken along line III-III of FIG. 2.

FIG. 4 is a cross-sectional view illustrating the head box of the drilling unit of FIG. 1 in section IV-IV, showing an example of the arrangement of gears inside the head box. FIG.

FIG. 5 is a plan view illustrating an example of an arrangement of through holes formed in a lower panel of a head box of the drilling unit of FIG. 1.

FIG. 6 is a front view showing a tool rotating shaft connected by a universal joint, which transmits rotational power to the drill of the drilling unit of FIG. 1.

7 is a cross-sectional view illustrating a drilling operation by the drilling unit of FIG. 1.

8 is a cross-sectional view illustrating a tapping operation by a tapping unit of FIG. 1.

FIG. 9 is a cross-sectional view illustrating a milling operation by the milling unit of FIG. 1.

Hereinafter, with reference to the accompanying drawings will be described in detail an automatic machining apparatus according to an embodiment of the present invention. Terminology used herein is a term used to properly express a preferred embodiment of the present invention, which may vary depending on the intention of a user or an operator or customs in the field to which the present invention belongs. Therefore, the definitions of the terms should be made based on the contents throughout the specification.

1 is a front view schematically showing an automatic machining apparatus according to an embodiment of the present invention, FIG. 2 is a plan view showing the transfer unit of FIG. 1, and FIG. 3 is a longitudinal sectional view according to III-III of FIG. 2. 1 to 3 together, the automatic machining apparatus 10 according to the embodiment of the present invention is a device for sequentially machining and conveying a pair of working materials 2 along a predetermined path. The working material 2 is a plate formed by casting of a metal such as aluminum or injection molding of plastic, for example. Specifically, the machining applied to the work material 2 is all cutting by drilling, tapping, and milling, but the machining that the automatic machining apparatus of the present invention can perform is cutting. It is not limited to.

The automatic machining apparatus 10 has a drilling unit 11, a tapping unit 50, a milling unit 60, a conveying unit 74, and a controller 130.

The transfer unit 74 is a unit that sequentially transfers a pair of working

materials

1A and 1B, and includes a transfer rail 81, a moving bar 92, a hydraulic cylinder 85, and Hydraulic cylinder connecting bar 91, first to

third material holders

95, 96, 97, and four material lifts 105.

The conveying rail 81 has a pair of parallel beams 82 extending parallel to the X axis. The conveying rail 81 has a loading position 76 and a drilling position 77 along the direction of travel of the working

materials

1A and 1B, that is, parallel to the direction of the positive X axis. ), A tapping position 78, a milling position 79, and an unloading position 80 are provided in turn. Each of the positions 76 to 80 is spaced at the same interval as the adjacent position.

The loading position 76 is a position where the pair of working

materials

1A and 1B are placed next to each other adjacent to each other. The operation of placing the pair of working

materials

1A and 1B in the loading position 76 so as to be adjacent to each other next to each other may be performed by an automated process by an industrial robot, or by manual labor of an operator. May be

Drilling position 77, tapping position 78, milling position 79 are machining positions at which a pair of working

materials

1A, 1B are machined. The drilling position 77 is a position at which drilling processing by the drilling unit 11 is performed on the pair of working

materials

1A and 1B. The tapping position 78 is a position at which a tapping process by the tapping unit 50 is performed on the pair of

work materials

1A and 1B which have finished drilling. The milling position 79 is a position at which milling processing by the milling unit 60 is performed on the pair of working

materials

1A and 1B which have finished tapping. The unloading position 80 is a position at which the pair of

work materials

1A and 1B, which have been sequentially drilled, tapped and milled, is separated from the transfer rail 81.

The moving bar 92 is disposed between the pair of parallel beams 82 and extends in parallel with the direction in which the transfer rail 81 extends, and is adjacent to each other among the positions 76 to 80 provided on the transfer rail 81. The distances between the pair of positions 76 to 80 are alternated to advance and retract, i.e., reciprocate. The hydraulic cylinder 85 has a cylinder housing 86 and a cylinder rod 87 movable in a direction protruding from the cylinder housing 86 and inserted into the cylinder housing 86.

The hydraulic cylinder 85 is disposed outside one side of the transfer rail 81. When the fluid is supplied into the cylinder housing 86, the cylinder rod 87 moves in parallel with the positive X-axis direction. When the fluid is discharged from the inside of the cylinder housing 86 to the outside, the cylinder rod 87 moves in parallel with the negative direction of the X axis. The stroke of the cylinder rod 87 is equal to the distance spaced between a pair of positions 76 to 80 adjacent to each other among the positions 76 to 80 provided on the conveying rail 81.

The hydraulic cylinder connecting bar 91 is arranged to intersect across the pair of parallel beams 82, one side of which is fastened to the end of the cylinder rod 87 so that the pair of parallel beams 82 extends. That is, it can reciprocate in parallel with the X axis. The other side of the hydraulic cylinder connecting bar 91 is fastened to one end of the moving bar 92. In such a configuration, the moving bar 92 moves forward and backward by the driving force of the hydraulic cylinder 85. The movement in the direction parallel to the X axis of the cylinder rod 87 is controlled by the controller 130.

The first to

third material holders

95, 96, 97 are provided on the moving bar 92 to provide a pair of pairs in the loading position 76, the drilling position 77, the tapping position 78, and the milling position 79. Hold the

work materials

1A and 1B. Therefore, when the moving bar 92 is advanced parallel to the X-axis positive direction, the pair of working

materials

1A and 1B placed at the respective positions 76 to 79 are moved along the moving bar 92. It is conveyed to the next position 77-80. Specifically, the

material holders

96 and 97 are provided with the first material holder 95 provided on the upstream side along the traveling direction of the pair of working

materials

1A and 1B in the transfer rail 81 and along the traveling direction. A third material holder 97 provided on the downstream side and a second material holder 96 provided between the quantums 95 and 97 are provided.

The work material 1A is sandwiched between the first material holder 95 and the second material holder 96, and the work material 1B is sandwiched between the second material holder 96 and the third material holder 97. Lose. When the moving bar 92 is advanced parallel to the X-axis positive direction, the first material holder 95 pushes the work material 1A and the second material holder 96 pushes the work material 1B. Transfer to the next position 77-80. Then, when the moving bar 92 stops moving forward, the second material holder 96 prevents the advancement due to the inertia of the work material 1A, and the third material holder 97 advances the work material 1B. The

work material

1A, 1B is accurately stopped at the next positions 77 to 80 by intercepting them.

The four material elevators 105 support and elevate a pair of working

materials

1A, 1B at the loading position 76, the drilling position 77, the tapping position 78, and the milling position 79, respectively. The structure of the four material elevators 105 is the same, and representatively, the structure of the material elevator 105 in the drilling position 77, the material elevator 105 is in accordance with the driving force of the lifting actuator 106. The elevating block 108 which elevates and lowers by this, and the material support plate 115 fixedly supported above the elevating block 108 are provided.

The elevating actuator 106 may include, for example, a hydraulic cylinder, a solenoid, or a motor. The elevating block 108 is formed with a groove 109 recessed from the upper side so as not to collide with the moving bar 92 despite its elevating. The material support plate 115 has a first portion 116 and a second portion 117 disposed on both sides with a moving bar 92 interposed therebetween, and the first portion 116 and the second portion 117. Is fixedly supported on one side upper end and the other upper end of the lifting block 108 divided by the groove 109, respectively. The elevating of the elevating actuator 106 is controlled by the controller 130.

On the other hand, inside the pair of parallel beams 82, stepped material support jaw 83 is provided to support the outer circumferential portions of the pair of working

materials

1A and 1B. When the material support plate 115 of the material elevator 105 is lowered, the pair of

work materials

1A and 1B are also lowered so that the pair of

work materials

1A and 1B are supported by the material support jaw 83 (FIG. 3). Solid support), the material support plate 115 is further lowered and spaced apart from the pair of working

materials

1A and 1B. In addition, the pair of working

materials

1A, 1B may include the first to

third material holders

95, 96, of the loading position 76, the drilling position 77, the tapping position 78, and the milling position 79. 97, and the moving bar 92 is advanced, the pair of working

materials

1A, 1B along the moving bar 92 moves to the next position, that is, the drilling position 77, the tapping position 78, Move to the milling position 79 and the unloading position 80.

On the contrary, when the material support plate 115 of the material elevator 105 is raised, the pair of working

materials

1A and 1B are supported by the material support plate 115 to be spaced apart from the material support jaw 83 and are first to third. The

material holders

95, 96 and 97 are also displaced (see the dashed-dotted line in FIG. 3). At this time, when the moving bar 92 is retracted, the first to

third material holders

95, 96, and 97 are separated from the pair of working

materials

1A and 1B, and the drilling position 77, the tapping position 78, Return from the milling position 79, and the unloading position 80 to the original position, namely the loading position 76, the drilling position 77, the tapping position 78, and the milling position 79. On the other hand, in the loading position 76, when the material support plate 115 of the material elevator 105 raises, a pair of

work material

1A, 1B is mounted on the material support plate 115. As shown in FIG.

FIG. 4 is a cross-sectional view illustrating the head box of the drilling unit of FIG. 1 in section IV-IV, showing an example of the arrangement of gears inside the head box. FIG. FIG. 5 is a plan view illustrating an example of an arrangement of through holes formed in a lower panel of a head box of the drilling unit of FIG. 1. FIG. 6 is a front view showing a tool rotating shaft connected by a universal joint, which transmits rotational power to the drill of the drilling unit of FIG. 1. 7 is a cross-sectional view illustrating a drilling operation by the drilling unit of FIG. 1.

1, and 4 to 7, when the pair of working

materials

1A and 1B are raised by the material elevator 105 (see FIG. 3) in the drilling position 77, the drilling unit 11 Drilling) is carried out. Through the drilling operation, a plurality of through holes 3 having a circular inner diameter are simultaneously formed in the pair of

work materials

1A and 1B.

The drilling unit 11 includes a motor 12, a plurality of tool rotating shafts 30 in which drills 47 are fixed to the lower end one by one, and a head for supporting a plurality of tool rotating shafts 30. A head box 15 is provided. The plurality of tool rotation shafts 30, the plurality of drills 47, and the head box 15 constitute a multi-axis head 14. The multi-axis head 14 is simultaneously lowered when the pair of working

materials

1A, 1B placed in the drilling position 77 are lifted by the material elevator 105 (see FIG. 3) to drill the drill 47. A blade (49) allows a drill hole (3) to penetrate the surface of the pair of work materials (1A, 1B), and after the hole (3) has been formed, the pair of work materials (1A, 1B) are material lifters. As it descends by 105 (see FIG. 3), it rises at the same time and spaces the drill blade 49 away from the pair of working

materials

1A and 1B.

The plurality of tool rotating shafts 30 supported by the head box 15 all rotate by the power of the motor 12, which causes the plurality of drills 47 to rotate in the same direction and at the same rotational speed. The head box 15 has four columns that connect the upper panel 20 and the lower panel 16 spaced apart from each other, and the upper panel 20 and the lower panel 16 so as to maintain a gap therebetween. (19) is provided. The four columns 19 have their upper and lower ends coupled to four corners of the upper panel 20 and the lower panel 16.

Inside the upper panel 20, a gear assembly is provided to transmit the rotational force of the motor 12 to the plurality of tool rotation shafts 30 supported by the head box 15. The gear assembly includes one central gear 22 positioned in the center of the upper panel 20, four first connecting gears 23 arranged around the outer side of the central gear 22, and the four from the central gear 22. Four second connecting gears 25 arranged farther apart than the first first connecting gears 23, and a plurality of tool turning gears 27 arranged around the periphery of each of the four second connecting gears 25, 28).

Specifically, the tool turning gears 27 and 28 include a first tool turning gear 27 and a second tool turning gear 28. One first tool turning gear 27 is provided for each second connecting gear 25 and is interposed between the first connecting gear 23 and the second connecting gear 25 together with the quantum 23, 25. Are matched. Nine second tool rotation gears 28 are provided for each of the second connection gears 25 and are engaged only with the second connection gears 25.

The center gear 22 is fastened to the lower end of the main shaft 13 which rotates by the power of the motor 12, and coaxially rotates as the main shaft 13 rotates, and the four first The connecting gear 23 is meshed with the center gear 22 and is driven to rotate the center gear 22. The four first tool turning gears 27 are engaged with each of the first connecting gears 23 one by one, and follow the rotation of the first connecting gears 23. Four second connecting gears 25 are engaged with each of the first tool turning gears 27 one by one, and are driven to rotate with the rotation of the first tool turning gears 27, and the 36 second tool turning gears 28 Nine pieces of the second connecting gears 25 are driven and rotated to the second connecting gears 25.

The tool rotation shaft 30 is fastened to each of the plurality of tool rotation gears 27 and 28, and the drill 47 fixed to each tool rotation shaft 30 and its lower end as the tool rotation gears 27 and 28 rotate. ) Will rotate. In this configuration, when the motor 12 is operated, the 40 tool rotary shafts 30 supported by the head box 15 and the 40 drills 47 fixed thereto rotate at the same speed and in the same direction. Operation of the motor 12 is controlled by the controller 130.

Based on the dashed dashed line extending parallel to the Y axis in FIG. 4 and crossing the center gear 22, a total of 20 tool turning gears 27, 28 engaged with the left pair of second connecting gears 25 are The rotational force of the motor 12 is transmitted to the drill 47 for machining the work material 1A on the upstream side in the travel direction among the pair of

work materials

1A and 1B.

In addition, a total of 20 tool turning gears 27 and 28 meshed with the right pair of second connection gears 25 on the basis of the one-dot chain line are downstream of the pair of working

materials

1A and 1B in the traveling direction. The rotational force of the motor 12 is transmitted to the drill 47 for machining the working material 1B in the.

The plurality of tool rotation shafts 30 respectively include an upper shaft member 32, a lower shaft member 43, a first universal joint 33, a second universal joint 40, and an intermediate portion. The side shaft member 36 and the spindle 45 are provided.

The upper shaft member 32 is inserted into the upper panel 20 and fastened to the tool rotation gears 27 and 28 so as to be coaxially rotatable. The lower shaft member 43 penetrates the lower panel 16. The first universal joint 33 is fastened to the lower end of the upper shaft member 32. The second universal joint 40 is fastened to the upper end of the lower shaft member 43. The middle shaft member 36 has an upper end coupled to the first universal joint 33, and a lower end coupled to the second universal joint 40 and connected to the upper shaft member 32 and the lower shaft member 43. The spindle 45 is fixedly fastened to the drill 47 provided at the lower end of the lower shaft member 43.

The first universal joint 33 is positioned to protrude below the upper panel 20, and the second universal joint 40 is positioned to protrude above the lower panel 16. The spindle 45 is positioned to protrude below the lower panel 16.

The drill 47 includes an upper drill bag 48 and a lower drill blade 49, and the drill bag 48 is inserted and fixed to the spindle 45 in a detachable manner.

The upper axis SH1 extending in the longitudinal direction of the upper shaft member 32 and the lower axis SH2 extending in the longitudinal direction of the lower shaft member 43 both extend in the vertical direction and are parallel to each other but do not overlap. Thus, the intermediate shaft member 36 extends linearly inclined with respect to the upper axis SH1 and the lower axis SH2.

As is known, a universal joint refers to a coupling that connects two shafts so as to transmit rotational power even when the two shafts are at a remote position or there is an angle difference between the two shafts.

Therefore, when the upper shaft member 32 of the tool rotation shaft 30 rotates, the rotational force is sequentially transmitted to the intermediate shaft member 36 and the lower shaft member 43 so that the drill 47 rotates.

Meanwhile, as shown in FIG. 5, the lower shaft member through hole 17 is formed in the lower panel 16 so that the lower shaft member 43 penetrates the lower panel 16. Although not shown in FIG. 5, a bearing is interposed around the through hole 17 so that the lower shaft member 43 can easily rotate with respect to the lower panel 16.

Meanwhile, in FIG. 5, the through hole 17 is disposed closer to the center of the second connecting gear 25 than the tool turning gears 27 and 28, but is not limited thereto, and is formed in the working

materials

1A and 1B. Depending on the position of the through hole 3, the through hole 17 may be arranged farther from the center of the second connecting gear 25 than the tool turning gears 27 and 28.

Referring again to FIG. 6, the intermediate shaft member 36 includes a cylinder 37, a rod 39, and length adjusting means.

The upper end of the cylinder 37 is fastened to the first universal joint 33. The rod 39 has a lower end coupled to the second universal joint 40 and an upper end inserted into the cylinder 37. The lengthening means adjusts the length in which the rod 39 is inserted into the cylinder 37 so that the length of the intermediate shaft member 36 can be changed.

The length adjusting means includes an elastic ball (not shown) and a plurality of seating grooves (not shown). An elastic ball (not shown) is elastically biased in a direction projecting toward the center of the cylinder 37 on the inner circumferential surface of the cylinder 37. The plurality of mounting grooves are formed to be dug inward from the outer circumferential surface of the rod 39, and are formed spaced apart in the longitudinal direction of the rod 39.

When the elastic ball projects toward the center of the cylinder 37, the elastic ball is seated in the seating groove, and the rod 39 is fixed relative to the cylinder 37. When the rod 39 is inserted or withdrawn with a moderate force against the cylinder 37, the elastic ball is elastically contracted and exits from the seating groove, and when the elastic ball is aligned with another adjacent seating groove, the elastic ball protrudes again. It is settled in the seating groove. And, accordingly, the rod 39 is fixed while being slightly inserted or removed with respect to the cylinder 37. With such a structure, the length of the intermediate shaft member 36 can be adjusted.

Referring together to FIGS. 1 and 7, the pair of working

materials

1A, 1B passed through the loading position 76 and transferred to the drilling position 77 are moved by the material lift 105 at the drilling position 77. Raised Then, when the plurality of drills 47 rotate at a high speed and the multi-axis head 14 descends downward, the plurality of drill blades 49 cut through the pair of

work materials

1A and 1B and penetrate through the pair of work materials. A plurality of through holes 3 are formed at predetermined points of 1A and 1B.

After the plurality of through holes 3 are formed, the multi-axis head 14 is raised to its original position, and the plurality of drill blades 49 are spaced apart from the pair of working

materials

1A and 1B.

The pair of working

materials

1A and 1B in which the plurality of through holes 3 are formed has a pair of parallel beams 82 (FIG. 3) as the material support plate 115 (see FIG. 3) of the material elevator 105 descends. 3 is supported by the material support jaw 83 (see FIG. 3), and is sandwiched between the first to

third material holders

95, 96, 97 (see FIG. 2).

Although not shown in FIG. 1, the pair of working

materials

1A and 1B positioned at the drilling position 77 are continuously supplied with water through a water supply hose (not shown), and the pair cut by the drill blade 49. The debris and dust of the working

materials

1A and 1B of the rinse are washed off by this water, and thus can be removed from the automatic machining apparatus 10 without being scattered.

1 and 8 together, the pair of working

materials

1A, 1B having completed the drilling operation are conveyed by the transfer unit 74 to the tapping position 78, and at the tapping position 78 the material lifter ( When the pair of

work materials

1A and 1B are raised by 105, the tapping processing operation is performed by the tapping unit 50. FIG. The tapping machining operation is an operation of forming a female screw thread on the inner circumferential surface of the through hole 3 (see FIG. 7) formed by drilling.

The tapping unit 50 includes a motor 52 and a multi-axis head 54 having a plurality of taps 57 as tools. Although not clearly shown in FIG. 1, the multi-axis head 54 is identical to the multi-axis head 14 of the drilling unit 11, with the only difference being that the tab 57 is provided instead of the drill 47 as a tool. .

Specifically, the multi-axis head 54 of the tapping unit 50 includes a plurality of tool rotation shafts 30 and a head box 15. The plurality of tool rotation shafts 30 are fixed with one tab 57 at the lower end thereof. The head box 15 supports a plurality of tool rotation shafts 30.

The tab 57 has an upper tab bag 58 and a lower tap blade 59 which are respectively inserted into and fixed to the spindle 45 (see FIG. 6) at the bottom of the tool rotating shaft 30. .

The pair of working

materials

1A, 1B, which in turn passes through the loading position 76 and the drilling position 77 and is transferred to the tapping position 78, is lifted by the material lift 105. When the tab 57 is rotated at high speed and the multi-axis head 54 is lowered, the tab blade 59 is inserted into the plurality of through holes 3 (see FIG. 7) formed by drilling, and rotated, so that the internal thread tread is threaded. The formed sand yarns or through holes 3a are formed. After the female threaded through hole 3a is formed, the multi-axis head 54 is raised to its original position, and the tab blade 59 is spaced apart from the pair of working

materials

1A and 1B. The pair of working

materials

1A and 1B on which the female threaded through holes 3a are formed is lowered by the material elevator 105 to allow the material supporting jaw 83 of the pair of parallel beams 82 (see FIG. 3) (FIG. 3). And the first to

third material holders

95, 96, 97 (see Fig. 2).

Although not shown in FIG. 1, the pair of working

materials

1A and 1B positioned in the tapping position 78 are continuously supplied with water through a water supply hose (not shown), and the pair cut by the tab blade 59. The debris and dust of the working

materials

1 and 9 together, the pair of working

materials

1A and 1B on which the tapping operation is completed is transferred by the transfer unit 74 to the milling position 79, and at the milling position 79 the material lifter ( When the pair of

work materials

1A and 1B are raised by 105, the tapping machining operation is performed by the milling unit 60. The milling operation is an operation of removing the protrusions 5 by cutting the surfaces of the pair of working

materials

1A and 1B.

The milling unit 60 includes a multi-axis head 64 having one motor 62 and a plurality of milling cutters 67 as tools. Although not clearly shown in FIG. 1, the multi-axis head 64 is also the same as the multi-axis head 14 of the drilling unit 11 or the multi-axis head 54 of the tapping unit 50, but only as a tool a drill 47 or The only difference is that the milling cutter 67 is provided instead of the tab 57. Specifically, the multi-axis head 64 of the milling unit 60 is a head box for supporting a plurality of tool rotary shaft 30 and a plurality of tool rotary shaft 30, each of which is fixed to the milling cutter 67 at the lower end. (head box) 15 is provided. The milling cutters 67 respectively have an upper milling cutter bag 68 and a lower milling cutter blade 69 inserted into and fixed to the spindle 45 (see Fig. 6) at the bottom of the tool rotating shaft 30. ).

When forming a product by die casting or injection molding, a pin for pushing up the product to separate the molded product from the mold in a cavity in the mold is called a mill pin. When the end portion of the mill pin is not smoothly connected to the inner surface of the cavity at the time of molding, the protrusion may be formed on the surface of the molded product, which is called 'mil pin marks'. As described above, when the pair of

work materials

1A and 1B is a die cast metal sheet or an injection molded plastic sheet material, one or a plurality of protrusions due to the mil pin marks on the surface of the pair of work materials 1A and 1B. (5) can be formed. If the working

material

1A, 1B molded in the same mold is used, the location of the mill pin marks, i.e., the protrusions 5 is constant.

The pair of working

materials

1A, 1B, which are in turn passed through the loading position 76, the drilling position 77, and the tapping position 78 and transferred to the milling position 79, are lifted by the material lift 105. . At this time, the protrusions 5 formed on the pair of working

materials

1A and 1B and the milling cutter 67 are aligned in the vertical direction. When the milling cutter 67 rotates at high speed and the multi-axis head 64 is lowered to an appropriate height, the protrusions 5 are cut by the milling cutter blades 69 so that the surfaces of the pair of

work materials

1A and 1B are flat. (See reference 5a).

After the protrusion 5 is removed, the multi-axis head 64 is raised to its original position, and the milling cutter blade 69 is spaced apart from the surface of the pair of working

materials

1A and 1B. The pair of working

materials

1A and 1B from which the protrusions 5 have been removed are lowered by the material elevator 105 to allow the material supporting jaw 83 of the pair of parallel beams 82 (see FIG. 3) (FIG. 3). And sandwiched between the first to

third material holders

95, 96, 97. On the other hand, the milling process by the milling unit 60 is not limited to the removal of the protrusion 5 mentioned above, and may also include the operation | work which forms the groove | channel recessed in the surface of the

work material

1A, 1B.

The pair of working

materials

1A, 1B, which have been machined through the loading position 76, the drilling position 77, the tapping position 78, and the milling position 79 in sequence, is moved forward of the moving bar 92. Is conveyed to the unloading position 80. The work material 2 conveyed to the unloading position 80 is picked up by the human force of the operator or by the operation of the industrial robot.

Although the present invention has been described with reference to the embodiments shown in the drawings, this is merely exemplary, and it will be understood by those skilled in the art that various modifications and equivalent other embodiments are possible. Therefore, the true scope of protection of the present invention should be defined only by the appended claims.

The present invention is applicable to devices in which machining is performed, such as drilling, tapping to form female threads, and milling to cut surfaces.

Claims

The plurality of working positions into a loading position in which a plurality of working materials are loaded, at least one processing position in which the plurality of working materials are simultaneously machined, and an unloading position in which the plurality of working materials is separated; A transfer unit for sequentially moving the work material; And a plurality of tools for machining a plurality of working materials stopped at the at least one machining position.

Each of the at least one processing unit comprises: a motor; A plurality of tool rotation shafts, which rotate by the power of the motor to rotate the plurality of tools, the plurality of tools being fixed one by one to a lower end; And an upper panel and a lower panel spaced apart from each other to support the plurality of tool rotation shafts;

Each of the plurality of tool rotating shafts includes: an upper shaft member inserted into the upper panel; A lower shaft member penetrating the lower panel; And an intermediate shaft member which connects between the upper shaft member and the lower shaft member having different axes to connect the rotational force of the upper shaft member to the lower shaft member.
According to claim 1,

Further comprising a head box having the upper panel and the lower panel,

The head box further includes a plurality of columns connecting the upper panel and the lower panel to maintain a gap therebetween.

Each of the tool rotation shafts may include: a first universal joint coupled to a lower end of the upper shaft member and connected to an upper end of the intermediate shaft member; A second universal joint fastened to an upper end of the lower shaft member and connected to a lower end of the intermediate shaft member; And a spindle to which the tool provided in the lower end of the lower shaft member is fixedly fastened.

And the upper axis extending in the longitudinal direction of the upper shaft member and the lower axis extending in the longitudinal direction of the lower shaft member are configured to be parallel to each other but not overlap.
The method of claim 2,

The head box has a gear assembly (gear assembly) for transmitting the rotational force of the motor to the plurality of tool rotating shafts in the upper panel,

The gear assembly includes: a central gear connected directly to a shaft rotating by the power of the motor; A plurality of first connecting gears which are driven to rotate the rotation of the center gear and are disposed around the center gear; The second connecting gear equal to the number of the first connecting gears, which is driven by the rotation of the plurality of first connecting gears, is spaced farther from the center gear than the first connecting gears. ; And a plurality of tools engaged with the plurality of second connecting gears, at least one of which is disposed at an outer periphery of each of the plurality of second connecting gears and fastened to the upper shaft member so that the tool rotating shaft rotates. Rotating gear; Automatic machining device characterized in that it comprises a.
The method of claim 3, wherein

At least one of the plurality of tool turning gears is also meshed with the first connecting gear and configured to transmit rotational force of the first connecting gear to the second connecting gear.
The method of claim 3, wherein

The plurality of working materials are provided with a pair, and the plurality of first connecting gears and the plurality of second connecting gears are each provided with two pairs,

A plurality of tool turning gears meshed with a pair of second connecting gears of the two pairs of second connecting gears transmit a rotational force of the motor to a tool for machining the working material of one of the pair of working materials, A plurality of tool turning gears meshed with another pair of second connecting gears of the two pairs of second connecting gears to machine a tool for machining another working material of the pair of working materials into the motor; Automatic machining apparatus, characterized in that configured to transmit the rotational force of.
The method of claim 2,

The intermediate shaft member may include a cylinder in which an upper end is fastened to the first universal joint, a rod in which a lower end is fastened to the second universal joint, and an upper end is inserted into the cylinder. It is provided with a length adjusting means for changing the length of the intermediate shaft member by stepwise adjusting the length inserted into the cylinder,

The length adjusting means may be formed on an inner circumferential surface of the cylinder so as to be spaced apart in the longitudinal direction of the rod from an elastic ball elastically biased in an direction projecting toward the center of the cylinder, and an outer circumferential surface of the rod. And a plurality of seating grooves recessed to be seated when the elastic ball is projected.
According to claim 1,

The transfer unit includes a transfer rail extending along a direction in which the plurality of working materials move; A moving bar extending in parallel with the transfer rail and alternately moving forward and backward by a distance between a pair of adjacent positions of the loading position, the at least one machining position, and the unloading position; And holding the plurality of working materials at the loading position and the at least one processing position, and moving the plurality of working materials placed at the loading position and the at least one processing position when the moving bar is advanced. And a plurality of material holders for transferring to the next position.
The method of claim 7, wherein

The transfer unit further includes a material lifter for supporting and elevating the plurality of working materials in the loading position and the at least one machining position.

When the plurality of working materials are lowered by the material lifter, the plurality of working materials are caught by the plurality of material holders and the moving bar is advanced to advance the plurality of working materials,

And when the plurality of working materials are lifted by the material lifter, the plurality of working materials are separated from the plurality of material holders and the moving bar is configured to retract separately from the plurality of working materials. Device.
According to claim 1,

The at least one machining unit includes a drilling unit having a drill for drilling a hole in the plurality of working materials as the tool,

And at least one machining position includes a drilling position at which machining by the drilling unit is performed.
The method of claim 9,

The at least one machining unit includes a tapping unit provided with a tap as a tool for forming a female screw thread on an inner circumferential surface of the through hole formed in the plurality of working materials by the drill. Included,

And the tapping position at which the machining by the tapping unit is performed is included in the at least one machining position.
According to claim 1,

The at least one processing unit includes a milling unit having a milling cutter as the tool that cuts surfaces of the plurality of working materials to remove projections or form grooves,

And the milling position at which the machining by the milling unit is performed is included in the at least one machining position.