JPS588406Y2 - Spindle support device for multi-axis drilling machine - Google Patents

Description

[Detailed description of the invention] This invention holds a large number of vertically oriented spindles on one support shaft, and by slightly rotating this support shaft around its central axis, all spindles can be simultaneously operated. The present invention relates to a spindle support device in a multi-spindle drilling machine that can be tilted by the same amount.

In order to create a scale-like or wavy-like polishing pattern on the surface of a metal plate, a large number of vertically oriented spindles are arranged in a straight line horizontally, and each spindle is equipped with a grinding wheel for patterning. There is a patterned multi-spindle drilling machine in which the grinding wheel is pressed against the surface of a metal plate placed on a feeding table.

In a multi-spindle drilling machine used for this type of patterning, each spindle must be tilted slightly with respect to the surface of the metal plate in order to create a scale pattern on the surface of the metal plate. It was troublesome to adjust the inclination angle of the spindle.

Additionally, conventional multi-spindle drilling machines of this type have the disadvantage that it is difficult to change the spacing between the spindles.

The present invention aims to provide a spindle support device for a multi-spindle drilling machine that eliminates the above-mentioned drawbacks, and will be described below based on embodiments shown in the accompanying drawings.

FIG. 1 shows an example of a patterned multi-spindle drilling machine equipped with an embodiment of the present invention.

Reference numeral 1 denotes a main body having an arched front shape, and a main shaft 2 extending in the vertical direction is supported on a portion projecting forward from its upper end.

The upper end of the main shaft 2 is linked via a sprocket 3, a chain 4, and a sprocket 5 to a shaft 6a of a motor 6 provided at the rear of the upper part of the main body 1, and the main shaft 2 is rotated by this motor 6.

A gear box 7 is provided at the lower end of the main shaft 2, and within the gear box 7, the rotational force of the main shaft 2 is transferred to a large number of branch shafts (
(not shown).

A housing-shaped spindle head 8 is located on the bottom surface of the gear box 7.
is fixedly installed, and a spindle support device 9 is provided on the lower surface thereof.

The spindle head 8 is provided so as to be able to move up and down along the main body 1, and inside the spindle head 8, a large number of spindles 1 supported by a spindle support device 9 are installed.
0 is a connecting rod 11 with an appropriate universal joint.
are connected to each branch axis via.

Reference numeral 12 denotes a feed table, which is moved continuously or stepwise in the front and rear direction by the operation of a hydraulic cylinder 14 provided in the table 13 below the spindle 10.
It is mounted on a stand 13.

In this way, a grindstone (see FIG. 5) is fitted to the lower end of each spindle 10, and while rotating this grindstone, the spindle head 8 is lowered to send the grindstone to a metal plate (not shown) placed on the table 12. ), various polished patterns can be applied to the surface of the metal plate.

Next, details of the spindle support device 9 will be explained with reference to FIGS. 2 to 5.

In this embodiment, a pair of front and rear support units 15 are provided at the lower end of the spindle head 8 and have a symmetrical structure.
．． 15 is provided, and both support units 15°15 provide
Since the spindle support device 9 is formed,
In the following description, in order to avoid duplication, only the front support unit 15 will be described, and each component in the rear support unit 15 will be denoted by a reference numeral indicating each component in the front support unit 15. It is indicated with the same symbol as .

A pair of T grooves 16, 16 are cut in the left and right sides of the spindle head 8, and each T groove 16 has a T groove.
The head of the grooved bolt 17 is fitted so that it can slide in the front and back direction.

Each T-slot bolt 17 is loosely fitted into a vertical shaft hole 19 bored approximately in the center of the holding block 18 .

At the center of the flat edge of the holding block 18, there is an inverted V-shaped mark on the side.
A shaped groove 20 is formed in the upper part of the holding block 18, and a pair of front and rear protrusions 21, 21 protrude outward.
is formed.

The T-slot bolt 17 below the holding block 18 has
Vertically extending shaft holes 23 are cut in the vicinity of both ends of the support shaft 22 extending in the left and right direction, and are loosely fitted therein.

A washer 24 is attached to the T-slot bolt 17 below the support shaft 22.
By tightening the nut 25, the holding block 18, the supporting shaft 22, etc. are attached to the spindle head 8 with the supporting shaft 22 fitted into the ■-shaped groove 20 of the holding block 18. It is designed to be fastened to the bottom surface of the

The center of a side arm member 26 facing in the front-rear direction is fixed to both ends of the support shaft 22.

An adjustment bolt 28 having a tightening nut 27 is screwed into both ends of the side arm member 26 from below, and the upper end of the tightening nut 27 is in contact with the lower surface of the protrusion 21 of the holding block 18. .

In this way, when the nut 25 is loosened, one adjustment bolt 28 can be increased in the upward protrusion amount, and the other adjustment bolt 28 can be increased.
By reducing the amount of upward protrusion of the shaft 8 and tightening the nut 25 again, the rotation angle of the support shaft 22 about the central axis can be adjusted.

In addition, in this embodiment, the T-slot bolt 17 and the support shaft 2
The support shaft 22 is only within the range of play with the shaft hole 23 of No. 2.
Although it is not possible to change the rotation angle of the spindle 10, the adjustment range of the inclination angle of the spindle 10 required for a multi-spindle drilling machine for patterning is only small, so this adjustment range is sufficient.

A T-groove 29 in the axial direction is cut in the front surface of the support shaft 22,
And the support shaft 22 between the left and right holding blocks 18 and 18
A flat surface 30 is cut out on the rear surface of.

Also, the support shaft 2 between the left and right holding blocks 18.
A key 31 is fixed to the lower surface of 2 with appropriate setscrews 32 and 32.

Therefore, around the support shaft 22 between the left and right holding blocks 18, 18, a large number of annular retaining rings 34 having key grooves 33 that fit into the keys 31 are arranged at appropriate intervals in the axial direction of the support shaft 22. When fitted, each retaining ring 34 is inserted into the T-groove 2.
9 is loosely fitted into the shaft hole 36 drilled in the front part of the retaining ring 34, and is screwed onto the free end of the T-groove bolt 35 via a suitable washer 37. By tightening the nut 38, the support shaft 22 is secured to a desired position.

A bearing member 39 is fixed to the rear portion of the retaining ring 34 with a set screw 40 inserted from inside the retaining ring 34, and the bearing member 39 rotatably holds the spindle 10.

41 is a spring compressed between the bearing member 39 and the lower large diameter portion of the spindle 10.

In addition, in FIG. 5, a state in which the grindstone 42 is fitted to the lower end of the spindle 10 and a state in which the connecting rod 11 is linked to the upper end of the spindle 10 via the universal joint 43 are shown by imaginary lines.

Further, in FIG. 3, the connecting rod 11 connected to the upper end of each spindle 10 is schematically shown along the center line.

Since the spindle support device of the present invention has the above-described structure, when the nut 25 is loosened, the adjustment pole)-2
8 and 28 and tightening the nut 25 again, the rotation angle of the support shaft 22 is changed, thereby changing the inclination angle of each spindle 10 supported by a large number of retaining rings 34 mounted on the support shaft 22. can be easily changed by the same amount at the same time, making it ideal for multi-spindle drilling machines.

Furthermore, in the device of the present invention, the distance between the spindles 10 can be easily adjusted by sliding each retaining ring 34 fitted onto the spindle 22 in the axial direction of the spindle 22. It is extremely convenient because it can be done.

In the above-described embodiment, the inclination angle of each spindle 10 can be adjusted individually by removing the key 31 from the support shaft 22.

[Brief explanation of drawings]

FIG. 1 is a partially cutaway side view showing an example of a multi-spindle drilling machine equipped with an embodiment of the present invention, FIG. 2 is an enlarged side view of the main part of FIG. 1, and FIG. FIG. 4 is a longitudinal sectional view taken along the line IV--IV in FIG. 3, and FIG. 5 is a longitudinal sectional view taken along the line ■--■ in FIG. 1...Main body, 2...Main shaft, 3...
...Sprocket, 4...Chain, 5...
...Sprocket, 6...Motor, 6a...
...shaft, 7...gear box, 8...
...Spindle head, 9...Spindle support device, 10...Spindle, 11...
Continuous rod, 12...Feeding table, 13...
・Base, 14...Hydraulic cylinder, 15...
・Support unit, 16...T groove, 17...
... T-slot bolt, 18 ... Holding block, 19
...Shaft hole, 20...■ Shape groove, 21...
... Protrusion, 22 ... Support shaft, 23 ...
・Shaft hole, 24...Washer, 25...Nut, 26...Side arm material, 27...Tightening nut, 28...・Adjustment bolt, 29...
T groove, 30... Flat surface, 31... Key, 32... Set screw, 33... Key groove, 34... Holding Ring, 35...T-slot bolt, 36...Shaft hole, 37...Washer, 3
8... Nut, 39... Bearing member, 4
0... Set screw, 41... Spring, 42
...Whetstone, 43...Universal joint.

Claims (1)

[Scope of utility model registration request] With a bolt hanging down from the lower surface of the spindle head and a nut screwed onto the lower end of the bolt, a ■-shaped groove is formed on the lower edge of the spindle head to fit into the support shaft near both ends of the support shaft extending in the left-right direction. A side arm member facing in the front-rear direction is fixed to at least one end of the spindle, and adjustment screws are provided at both ends of the side arm member. is screwed in from below, and the upper end of the adjustment screw is brought into contact with the lower surface of the appropriate position of the holding block. By adjusting the amount of upward protrusion of the adjustment screw, the rotation angle around the central axis of the support shaft can be adjusted. 1. A spindle support device for a multi-spindle drilling machine, characterized in that a plurality of retaining rings which are adjustable and rotatably hold the spindle are externally fitted onto the support shaft at appropriate intervals.