JPH0723126Y2 - Spider drilling equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention is a member having a central spherical portion and four connecting protrusions having a circular cross-section protruding through the center of the central spherical portion. More specifically, the present invention relates to a spider drilling device, and more particularly, to a device for efficiently drilling fluid communication holes that communicate with four connecting protrusions of a spider in a central spherical portion.

[Conventional technology]

Conventionally, the spider has four holes for connecting to
Clamp the spider and drill from the outside of the three connecting projections to the point just before the center of the central sphere with the drill of the drilling device, and after retracting these drills, the outside of the remaining connecting projections. By making a connecting hole that connects with the hole of the connecting protrusion on the same straight line, which has been previously drilled by a drill of another drilling device, the four connecting protrusions protruding in a cross shape are drilled. The four holes were in communication.

[Problems to be solved by the device]

When a communication hole is drilled in the spider's cruciform protrusion by the conventional method, each hole to be drilled in the three connecting protrusions at the same time must be stopped exactly before reaching the center of the central spherical portion. The drills of the table's drilling device touch each other and are damaged.

Further, since the remaining connecting protrusions are drilled up to the position where they pass through the center of the central spherical portion, the fourth drilling device is the drill of the three drilling devices that previously drilled. If the drill is not advanced after retreating, the drills will be damaged by the contact between the drills.

Besides, while the three drilling devices are working at the same time,
The feed of the remaining one drilling device is stopped, and when the stopped drilling device is activated, the drills of the three previously drilled devices are retracted and stopped, In drilling the spider, each drilling device could not be operated efficiently.

The present invention has been made in view of the above circumstances, and the four connecting holes of the spiders, which are rotated by the carrier by simultaneously operating the four hole forming devices, are formed on the connecting protrusions of the spiders reaching the center of the central spherical portion. It is an object of the present invention to provide a spider drilling device capable of eliminating damage to a drill that may occur due to contact and performing drilling in a spider efficiently by sequentially performing the above.

[Means for Solving the Problems]

In order to achieve the above object, according to the present invention, a horizontal disc-shaped carrier has a workpiece holding jig having vertical through holes in jig holes at respective positions equally divided into six on the same circumference. A tool is provided, and it is held in a positioning state at each stop position where it is stopped by rotating 1/6 around the vertical column,
The vertical support is fixed on the upper side of the carrier in parallel with a disk-shaped fixing plate of about the same size as the carrier. The fixing plates are not on the diameter line and the work holding jig of the carrier that is stopped on the work supply side. A workpiece positioning jig having an inverted V-shaped groove is attached at a position opposite to the workpiece holding jig, and the workpiece holding jig is provided below the carrier which is stopped at a position corresponding to each positioning jig on the fixed plate. There is a fluid cylinder for upward movement that presses the workpiece against each positioning jig of the fixed plate through each through hole of the tool, and different cross-shaped connecting protrusions of the same workpiece pressed against each positioning jig of the fixed plate. On the extension line of the part, a drilling device is provided for drilling up to the center of the central spherical part of the work, and the work is supplied to the outside of the carrier of the arcuate removal part provided on the supply side of the fixed plate. Discharging conveyors are arranged separately, and at the tip of the carrier side of these conveyors, there is provided a feeding / discharging device that delivers the processed work from the carrier to the delivery conveyor and also delivers the work on the supply conveyor to the carrier. In the lower side of the work holding jig of the carrier that is stopped on the opposite side of the conveyor, there is provided a direction changing means that moves upward through the through hole and half-turns the work back to the work holding jig. A drilling device is configured.

The fixing plate may be configured to be removed in an arc shape above the work holding jig of the carrier stopped at the position opposite to the conveyor side.

[Action]

When the carrier that holds the 6 workpieces is stopped at the position where it has been rotated 1/6 turn, the 4 fluid cylinders below the workpiece holding jig of the carrier will move the respective workpiece holding jigs. Are simultaneously moved up through the through-holes, and the connecting projections of the four works held on the upper side are pressed against the inverted V-shaped grooves of the positioning jigs of the fixing plate. Simultaneously with this pressing, four drilling devices are operated, and these drilling devices perform drilling to reach the center of the central spherical portion of the work on each of the cross-shaped connecting projections projected from the work. After drilling the workpiece at each stop position,
The plungers of the fluid cylinders are moved down to their original positions, and the work is returned to the upper side of the work holding jig on the carrier.

During this time, the work on the carrier stopped below the arcuate removal portion of the fixing plate is gripped by the feeding / discharging device provided at the tip of the conveyor side and delivered to the discharging conveyor. After the delivery of the work is completed, the feeding / discharging device grips the work on the supply conveyor and supplies the work to the upper side of the empty work holding jig on the carrier.

Further, the work on the carrier stopped on the opposite side of the conveyor moves to the intermediate position between the work holding jig and the positioning jig through the through hole of the work holding jig by the direction changing means provided on the lower side of the carrier. After that, the two cross-shaped connecting protrusions that are left on the work holding jig after being half-turned in that state and left without being drilled are changed in direction suitable for the subsequent drilling.

〔Example〕

 An embodiment of the present invention will be described below with reference to the drawings.

The spider drilling device of this embodiment includes a vertical column 2, which is erected from a base 1, a carrier 3, a fixing plate 4, a positioning and holding means 5 for the carrier 3, a fluid cylinder 6 for upward movement, a drill device 7, and a supply conveyor 8. And a discharge conveyor 9, a supply / discharge device 10, and a direction changing means 11.

The horizontal carrier 3 in the shape of a disk is provided with jig holes 3a at each of the six equally divided positions on the same circumference in the periphery, and these jig holes 3a are arranged in the vertical direction. A work holding jig 13 having a through hole 13a slightly larger than the central spherical portion 12a of a spider (hereinafter referred to as a work) 12 is fitted therein. The work holding jig 13 has the above-mentioned through hole 13 on the disk-shaped upper surface.
A circular concave hole 13b, which is concentric with a and is larger than the through hole 13a, is formed, and in a cross direction of an annular portion 13c surrounding the circular concave hole 13b, a connection projecting from the central spherical portion 12a of the work 12 in the cross direction. A V-shaped groove 13d for holding the projecting portion 12b in the positioned direction is provided.

The carrier 3 has an annular groove 3b having a constant depth formed on the upper surface inside which the work holding jig 13 is fitted, and on the same circumference inside and outside the annular groove 3b. An engaging hole 3c for a knock pin is penetrated to each of the six equally divided positions, and a positioning pin 14 is projected downward. 3d is a bush press-fitted into the engagement hole 3c for the knock pin.

The vertical support 2 above the carrier 3 has the carrier 3
A disk-shaped fixing plate 4 having a size substantially the same as that of is fixed in parallel with the carrier 3. The fixing plate 4 has an arcuate shape above the jig hole 3a of the carrier 3 that is stopped at the position where the work 12 is supplied and discharged, and the work 12 on the carrier 3 that is stopped at this position is removed. The work 12 is delivered to and from the supply conveyor 8 and the discharge conveyor 9 provided outside the carrier 3 without being hindered by the fixed plate 4.

Reference numeral 15 denotes a motor mounted on the upper surface of the fixed plate 4, and the rotation of the carrier 3 causes a drive gear 16 fixed to a motor shaft 15a protruding from the motor 15 to the lower side of the fixed plate 4 to be coaxial with the carrier 3. It is performed by meshing with a driven gear 17 fixed to. Each time the carrier 3 is rotated 1/6 of a turn by the motor 15, the six positioning pins 14 projecting from the carrier 3 actuate a proximity switch (not shown) provided in the rotation range thereof, and a predetermined distance is obtained. Stopped in position. After the carrier 3 is stopped, the knock pin 5a, which is moved upward from the positioning and holding means 5 provided on the lower side of the carrier 3, is sequentially inserted into the knock pin engaging hole 3c and is held at the stopped position. Therefore, each work holding jig 13 of the carrier 3 which is rotated by 1/6 rotation and stopped is always in the same state as shown in FIG. The positioning holding means 5 moves the knock pin 5a downward to the original position after the set time,
When the downward movement of the knock pin 5a is detected, the motor 15 is started and the carrier 3 is rotated to the next position.

When the rotation direction of the carrier 3 is, for example, clockwise when viewed from the upper side, the positions at which the six work holding jigs 13 of the carrier 3 are stopped are determined from positions close to the supply conveyor 8 and the discharge conveyor 9. A, B, C, D, E, in order of rotation
When it is set to F, the work 12 is supplied and discharged at the stop position A, and the cross-shaped connecting projections 12b of the work 12 are drilled at the stop positions B, C, E, and F, respectively. Then, at the stop position D, the direction of the work 12 is changed by a half rotation.

At the four stop positions B, C, E, and F where the connecting projection 12b of the work 12 is drilled, the work is held on the lower surface of the fixing plate 4 facing the work holding jig 13 of the carrier 3. There is provided a positioning jig 18 having four inverted V-shaped grooves 18a for holding the connecting protrusions 12b protruding in the cruciform direction 12 in the positioned direction. The positioning jig 18 has a structure in which the through hole 13a of the work holding jig 13 is omitted, and a ridge 18b having a rectangular cross section is formed on the fixed plate 4 side, and the inverted V-shaped groove 18a is attached downward. Has been. 19 is a fixed plate 4
The cylindrical cover 19 is fixed to the lower surface of the carrier 3. The cylindrical cover 19 has its lower end edge inserted in the annular groove 3b formed on the upper surface of the carrier 3 and holds each work holding jig 13 of the carrier 3. Are separated from the drive gear 16 that rotates the carrier 3, the driven gear 17, and the engagement hole 3c for the knock pin.

Each V-shaped groove 13d passes through the through hole 13a of the work holding jig 13 provided on the carrier 3 at the lower position of the carrier 3 corresponding to the four positioning jigs 18 attached to the fixed plate 4.
Four fluid cylinders 6 for upward movement are provided for moving the work 12 held by the above. By operating these fluid cylinders 6 at the same time, B, C, E, F
The four work pieces 12 held by the work piece holding jig 13 at the stop position are pressed and held by the respective positioning jigs 18 of the fixing plate 4, and the respective connecting projections 12b of the work pieces 12 have an inverted V shape. The grooves 18a are positioned in the drilling direction.

Further, below the stop position D of the carrier 3, the work 12 held in the V-shaped groove 13d of the work holding jig 13 is moved upward through the through hole 13a of the work holding jig 13, and the fixing plate 4 is moved. The direction changing means 11 is provided for rotating the work 12 half a turn at a height position where it does not come into contact with. The direction changing means 11 is
For example, it can be configured by combining the fluid cylinder 11A and the motor 11B in the vertical direction.

Now, at the stop position A, the four connecting protrusions 12b of the work 12 held by the work holding jig 13 of the carrier 3 are a, b, c, d.
In the stop positions B, C, D in which the carrier 3 is rotated by 1/6 rotation, and in the stop positions E, F in which the carrier 3 is rotated by 1/6 rotation after being half-turned at the stop position D. Distinguishes the four connecting protrusions 12b of the work 12a,
The directions of b, c and d are as shown in FIG.

At the stop positions B, C, E, F shown in FIG. 1, the work 12 pressed and held by each positioning jig 18 of the fixing plate 4 has the connecting projections 12b shown by a, b, c, d. The drill device 7 for making a hole reaching the center of the central spherical portion 12a of each work 12 is horizontally provided on the installation plate 20 to which the base 1 of the vertical column 2 is fixed on the extension line of the above.

The supply conveyor 8 and the discharge conveyor 9 are fixed plates 4
It is disposed so as not to overlap with the mounting plate 20 on the outside of the carrier 3 in which the arcuate portion is formed. A supply / discharging device 10 for supplying and discharging the work 12 is provided at the tips of the supply conveyor 8 and the discharge conveyor 9 on the carrier 3 side. The supply / discharge device 10 includes a fluid cylinder 10A that vertically moves a gripping member 10C that can move in the left-right direction.
And a rotary actuator 10B that rotates the gripping member 10C moved in the vertical direction about a vertical axis.

The workpiece 12 on the carrier 3 stopped at the stop position A after the completion of the drilling is gripped by the gripping members 10C at both ends of the pair of connecting protrusions 12b, 12b protruding in the linear direction, and the work cylinder 12A is vertically moved. It is discharged to the discharge conveyor 9 by the combination of the movement in the direction and the rotation of the rotary actuator 10B. The supply and discharge device 10 that has finished discharging the work 12
The gripping member 10C is moved to the upper side of the supply conveyor 8 and grips the work 12 on the supply conveyor 8 to form a fluid cylinder.
10A and rotary actuator 10B actuate to stop position A
Is supplied to the work holding jig 13 of the carrier 3.

Next, the operation of the device will be described.

When the work 12 on the supply conveyor 8 is supplied to the work holding jig 13 at the stop position A of the carrier 3 by the supply / discharge device 10, the carrier 3 is rotated by the motor 15 attached to the fixed plate 4, and the position is changed. A proximity switch (not shown) operated by the take-out pin 14 stops at the position rotated by 1/6. At the same time when the carrier 3 is stopped, the knock pin 5a of the positioning and holding means 5 is moved upward to move the carrier 3
The carrier 3 is fixed by being inserted into the knock pin engaging hole 3c.

Then, the fluid cylinder 6 provided below the stop positions B, C, E, F of the carrier 3 is operated, and the workpiece holding jig is fixed by the plunger 6a passing through the through hole 13a of the workpiece holding jig 13 on the upper side thereof. The work 12 held by the tool 13 is lifted, and the four connecting projections 12b of the work 12 are pressed by the positioning jig 18 fixed to the lower surface of the fixing plate 4.

By this pressing, the cross-shaped connecting projection 12b of the work 12 is
Is held in each inverted V-shaped groove 18a of the positioning jig 18, and one of the connecting projections 12b is positioned in the direction indicated by a.
When the work 12 is held in the positioned state, the drill device 7 provided on the extension line of the connecting projection 12b indicated by a is operated, and one connecting projection 12b of the work 12 has a central spherical portion 12a. A circular hole is drilled to reach the center of the.

When the boring to one of the connecting projections 12b is completed, the knock pin 5a of the positioning holding means 5 is moved down to release the fixing of the carrier 3, and at the same time, the plunger 6a of the fluid cylinder 6 is moved down to the original position. Then, the work 12 is placed on the work holding jig 13 of the carrier 3. When the completion of the lowering of the plunger 6a is detected, the carrier 3 is rotated by the motor 15 and stopped at the position rotated 1/6 by the same operation as described above. Along with this, the workpiece 12 that has been subjected to drilling at the stop position B is rotationally moved to the stop position C.

When the work 12 is stopped at the stop position C, the carrier 3
Is fixed in that position by a knock pin 5a of the positioning holding means 5, and the work 12 is pressed against the positioning jig 18 of the fixing plate 4 by the operation of the fluid cylinder 6 provided below the stop position C, and is connected. The projection 12b for positioning is positioned. In the positioning at the stop position C, the second connecting protrusion 12b of the work 12 shown by b is aligned with the processing direction of the second drill device 7. Therefore, by machining with the drill device 7 at the stop position C, a circular hole reaching the center of the central spherical portion 12a is drilled in the second connecting projection 12b of the work 12, and two adjacent connecting projections are formed. The two circular holes made in 12b are connected in an L-shape. The operation after the drilling is the same as that described for the stop position B, and the work 12 after the fixing release of the carrier 3 and the drilling is completed.
After the downward movement of the carrier 3, the carrier 3 is rotated 1/6 turn,
The work 12 at the stop position C is rotationally moved to the stop position D.

When the work 12 is stopped at the stop position D and the carrier 3 is fixed, the direction changing means 11 below the carrier 3 is moved.
Operation causes the plunger 11a of the fluid cylinder 11A to move upward, and the work 12 is lifted from the carrier 3 and half-rotated by the motor 11B.
It is held on the work holding jig 13 of the carrier 3 by the downward movement.

When the work 12 is half rotated and returned to the original position, the work 12 is rotated from the stop position D to the stop position E by the 1/6 rotation of the carrier 3, but the work 12 at the stop position D is rotated.
By a half rotation of the first and second connecting projections 12b, 1 which are directed to the outside of the carrier 3 at the stop positions A, B, C.
2b faces the inside of the carrier 3, until then the carrier 3
The third and fourth connecting protrusions 12b and 12b, which are indicated by c and d and which faced the inside of the carrier, face the outside of the carrier 3.

Therefore, the work 12 pressed against the positioning jig 18 of the fixed plate 4 by the fluid cylinder 6 at the stop position E is the third connecting projection of the work 12 shown by c by the third drill device 7. A circular hole reaching the center of the central spherical portion 12a is formed in 12b, and the three circular holes formed in the three connecting protrusions 12b are connected in a T shape.

Further, at the stop position F where the carrier 3 is rotated 1/6, the positioning jig for the fixing plate 4 is fixed by the fluid cylinder 6.
The work 12 pressed against 18 is 4 of the work 12 shown by d.
The second connecting projection 12b is positioned in the direction of the fourth drill device 7. Therefore, the fourth connecting device 12b of the work 12 is attached to the central spherical portion 1 by the fourth drill device 7.
When a circular hole reaching the center of 2a is drilled, the four circular holes drilled in the four connecting projections 12b are connected in a cross shape, and the work of drilling the work 12 is completed.

The work 12 for which the drilling work has been completed is fixed at the initial stop position A by the subsequent 1/6 rotation of the carrier 3.
Simultaneously with this fixing, the feeding / discharging device 10 is actuated, and is gripped by the gripping member 10C and moved upward to move the workpiece 12 at the stop position A.
Is transferred from the carrier 3 onto the discharge conveyor 9 by the downward movement after being rotated. Next, the new work 12 on the supply conveyor 8 is gripped by the gripping member 10C, and the vertical movement of the fluid cylinder 10A and the rotation actuator 1 are performed.
By the combination of the rotations by 0B, the work 12 is removed and supplied onto the work holding jig 13 of the carrier 3 at the stop position A which is empty. Then, by repeating the above-described operations, the work of drilling the work 12 is continued.

The above operation is performed for one work piece at each stop position A to F.
It is an explanation of drilling for 12. Therefore, the work 12 is supplied every time the carrier 3 is rotated 1/6, the six works 12 are supplied to the carrier 3, and the work 3 is supplied to the carrier 3 by 6 times.
In the steady state where one work 12 is placed, the work 12 is ejected after the completion of drilling at the stop position A and a new work 12 is placed.
Is supplied during this time, and at the stop position of B, the first connecting projection 12b of one work 12 is perforated. Further, at the stop position of C, the second connecting protrusion 12b of another work 12, which has already been drilled in the first connecting protrusion 12b, is drilled. On the other hand, at the stop position D, the direction change of half the rotation is performed on the workpiece 12 that has been drilled in the two connecting protrusions 12b. At the stop position of E and F, it is already 2
For each of the separate workpieces 12 in which one or three connecting protrusions 12b are perforated, the third or fourth connecting protrusion 12b is perforated, respectively.

Therefore, when this spider drilling device is used, the four drilling devices 7 perform drilling on the connecting projections 12b of the four different works 12, respectively.
Even if the drilling device 7 simultaneously performs drilling to reach the center of the central spherical portion 12a of the workpiece 12, each drilling device 7
Since there is no contact between the drills, it is possible to reliably prevent damage to the drill caused by the contact.

Further, since the four drilling devices 7 do not need to wait for a certain period of time while each other is operating and can perform drilling at the same time, it is always necessary to perform drilling work on four workpieces 12. It can be done efficiently.

Moreover, the supply, discharge, and half-rotational direction change of the work 12 are performed during the drilling work by the four drill devices 7, so that the work time can be eliminated and the productivity can be remarkably improved. .

[Effect of device]

Since the present invention is configured as described above, it has the following effects.

The work is fed to the upper side of the carrier, which is stopped every 1/6 turn around the vertical column, and four different drilling devices are installed at the four machining positions where the carrier is stopped. Since the connecting projections of the workpieces are drilled at the same time, even if drilling is performed at each drilling position up to the position that reaches the center of the central spherical portion of the workpiece, it is certain that the drills will come into contact and cause damage. Can be prevented.

In addition, the four drill units can be operated efficiently without wasting the waiting time as before, and in addition to supplying and discharging the work to the carrier,
Since the direction change of half a rotation after drilling the two connecting protrusions for the work can also be performed by utilizing the time during which the four drill devices are drilling,
The productivity can be remarkably improved by effectively utilizing the time per cycle of one rotation of the carrier.

[Brief description of drawings]

FIG. 1 is a plan view of an embodiment of the present invention, and FIG. 2 is an enlarged vertical sectional view of a main portion of FIG. 1 including a supply side and a direction changing portion (including a vertical sectional view of a motor portion). ), Fig. 3 is Fig. 1
III-III sectional view, FIG. 4 is a plan view showing half of the carrier, FIG. 5 is a vertical sectional view of a work holding jig, and FIG.
The figure is a vertical sectional view of the positioning jig. 2 ... Vertical support 3 ... Carrier 3a ... Jig hole 4 ... Fixing plate 5 ... Positioning / holding means 6 ... Fluid cylinder 7 ... Drill device, 8 ... Supply conveyor 9 ... Discharge conveyor, 10 ... Supply / discharge device 11 ... Direction Converting means 12 ... Work (spider) 12a ... Central spherical portion, 12b ... Connecting protrusion 13 ... Work holding jig, 13a ... Through hole 18 ... Positioning jig, 18a ... Inverted V-shaped groove

Claims (1)

[Scope of utility model registration request] 1. A horizontal disk-shaped carrier is provided with a work holding jig having through holes in the vertical direction in jig holes at respective positions divided into six equal parts on the same circumference, and is provided vertically. It is held in a positioning state at each stop position where it rotates by 1/6 rotation around the column, and the vertical column is fixed to the upper side of the carrier in parallel with a disc-shaped fixing plate of approximately the same size as the carrier. The fixing plate is provided with a workpiece positioning jig having an inverted V-shaped groove at a position facing the workpiece holding jig of the carrier stopped on the workpiece supply side and the four workpiece holding jigs not on the diameter line. , A fluid cylinder for upward movement is provided below the carrier that is stopped at a position corresponding to each positioning jig of the fixed plate, and presses the workpiece against each positioning jig of the fixed plate through each through hole of the work holding jig. Positioning of fixed plate On the extension lines of the different cross-shaped connecting protrusions of the same work that are pressed by the jig, a drilling device that drills up to the center of the central spherical part of the work is installed, and is installed on the supply side of the fixed plate. Conveyors for supplying and discharging the work are separately arranged outside the carrier of the arcuate removing section, and the processed work is delivered from the carrier to the discharge conveyor at the carrier-side end of these conveyors. A feeding / discharging device that delivers the work on the supply conveyor to the carrier is installed, and it moves up through the through hole below the work holding jig of the carrier that is stopped on the opposite side of the conveyor, and rotates the work half a turn. A spider drilling device, characterized in that a direction changing means for returning to the holding jig is provided.