JP2690565B2 - Work processing device - Google Patents

Description

TECHNICAL FIELD The present invention relates to an orthogonal biaxial type work processing apparatus.

(Prior Art) An apparatus disclosed in Japanese Utility Model Laid-Open No. 63-158749 is known as an apparatus for performing machining from a direction orthogonal to a work.

This work processing device consists of a pair of processing units,
The axis lines of the spindle shafts of the respective processing units are orthogonal to each other in a side view, so that the work can be processed from different directions.

(Problems to be Solved by the Invention) In the above-described conventional apparatus, it is not possible to cope with a case where the parts to be machined are different even if the shape of the workpiece is the same due to the change of the model, etc. However, there are problems in terms of cost and manufacturing work. In addition, the blade is often inserted with the spindle shaft being shifted in the direction perpendicular to the axis so that the blade does not hit the workpiece when moving inside the workpiece. Frequent shifting of the spindle shaft is not preferable because it causes deterioration of the accuracy of the processing machine.

(Means for Solving the Problems) In order to solve the above problems, the present invention provides a spindle shaft 9
Of the orthogonal biaxial type including one processing unit in which the processing tool holder 10 is attached to the tip of the other, and the other processing unit in which the processing tool holder 57 is attached to the tip of the spindle shaft 56 orthogonal to the spindle shaft 9. In the workpiece processing apparatus, the spindle shaft 9 of one processing unit is rotatably supported in an eccentric sleeve 8, and the eccentric sleeve 8 is rotatably held by the unit body 5. A pallet P is movably attached to the front surface of one of the processing units via a plurality of guide bars 75, and a clamp cylinder 71 and a clamp claw 72 for clamping the work W on the pallet P are attached. A shift mechanism 80 for pushing and pulling the pallet P on the front surface of one processing unit in the direction perpendicular to the spindle shaft 56 of the other processing unit. The shift mechanism 80 pushes the pallet P to move the work W to the insertion position of the spindle shaft 56 of the other processing unit, and the shift mechanism 80 pulls the pallet P to move the work W to the processing position. It is characterized by doing so.

(Operation) When the position of one of the machined holes of the workpiece is vertically eccentric to the other due to the model change,
The eccentric sleeve is rotated according to the amount, and the axis line of the spindle shaft of one of the processing units is eccentric in the vertical direction. When the tool interval of the pair of machining units is widened or narrowed due to the rotation of the eccentric sleeve, the other machining unit is moved back and forth with respect to the work in order to correct it. Since it is not necessary to shift the spindle shaft 56 of the other processing unit in the axis-perpendicular direction, the perpendicularity between the one spindle shaft 9 and the other spindle shaft 56 can be accurately maintained.

(Example) Hereinafter, an example of the present invention will be described with reference to the accompanying drawings.

FIG. 1 is an overall plan view of a work processing apparatus according to the present invention,
2 is an enlarged view of a main part of FIG. 1, FIG. 3 is a cross-sectional view of the first processing unit, FIG. 4 is a view in the direction of arrow A of FIG. 3, and FIG. 5 is a cross-section of the second processing unit. Figures and 6 are front views of the pallet.

The workpiece processing apparatus is provided with a first processing unit U1 and a second processing unit U2 on a base 1, a chip processing device 2 is installed at a position away from the base 1, and the chip processing device 2 and the base are installed. Stand 1
A duct 3 is bridged in between so that chips generated during processing are sucked and removed through the duct 3. Also, the base 1
A pallet P holding a work W is fixed on the top.

The first processing unit U1 engages the unit body 5 with the rail 4 provided on the base 1, and moves the work W forward and backward by the operation of the cylinder unit 6. As shown in FIG. 3, a through hole 7 is formed in the unit body 5 in the axial direction, an eccentric sleeve 8 is rotatably inserted in the through hole 7, and a spindle shaft 9 is freely rotatable in the eccentric sleeve 8. The tool holder 10 is mounted on the tip of the spindle shaft 9 via a quick change adapter, and the blade 11 for cutting is attached to the tool holder 10. Further, a pulley 12 is fitted to the rear end of the spindle shaft 9 and a rotary joint is provided.
A cutting water supply pipe 14 is connected via 13, and a belt 17 is stretched between a pulley 16 rotated by a motor 15 attached to the unit body 5 and the pulley 12 so that the spindle shaft 9 is rotated. There is. Although not shown, the belt 17 is constantly pushed by the tension pulley,
Even if the distance between the pulleys 12 and 16 changes, the pulleys are stretched with a constant tension.

Further, the eccentric sleeve 8 is positioned by the positioning mechanism 20 at any rotation position. The positioning mechanism 20 has a disc 21 fixed to the rear end surface of the eccentric sleeve 8, an arm 22 fixed to the disc 21, an engagement hole 23 formed at the front end of the arm 22 and a lever 24 attached thereto. As shown in FIG. 4, mounting holes 25 ... Are formed at the outer periphery of the rear end of 25 at intervals of about 15 °, and cases 26, 26 are mounted in predetermined mounting holes 25 of these mounting holes 25. . Each case 2
The pin 27 is housed in the 6 by being urged by the spring 28 in the projecting direction, and the rear end of the pin 27 is connected to the knob 29.
Pulling pulls pin 27 back.

Then, with the pin 27 retracted, the lever 24 is held and the eccentric sleeve 8 is rotated about 90 ° from one case 26 to the other case 26, and the pin 27 is inserted into the engagement hole 23 of the arm 22. By doing so, the shaft center l1 of the spindle shaft 9 moves so as to draw an arc locus 13 around the shaft center l4 of the eccentric sleeve 8, and the shaft center position of the spindle shaft 9 is switched from the A model position to the B model position.

15 ° × n + α (n is an integer, α <15 °) around the disk 21 with respect to the mounting hole 21a of the operation arm 22.
At the position of, a mounting hole for mounting the other operation arm 22 '
Forming 21b.

By doing so, it is possible to deal with the C model, which has a small eccentricity with respect to the A model.

The first processing unit U1 is a hydro chuck mechanism.
30 and a toggle chuck mechanism 40. Here, in FIG. 3, the toggle chuck mechanism 40 for facilitating the understanding is shown provided on the upper part of the unit main body 5, but the actual device is provided as a pair on the left and right as shown in FIG.

The hydro chuck mechanism 30 is provided with a portion that forms a space between the through hole 7 formed in the unit body 5 and the eccentric sleeve 8, and an elastic annular member 31 is attached to the inner periphery of the through hole 7 of the portion. An airtight pressure chamber 32 is formed between the elastic annular member 31 and the inner periphery of the through hole 7, and an oil hole 33 is formed in the pressure chamber 32.
The hydraulic oil is supplied and discharged via the. By supplying hydraulic oil to the pressure chamber 32, the elastic annular member 31 is expanded inward and the outer circumference of the eccentric sleeve 8 is tightened and locked.

Further, the toggle chuck mechanism 40 forms a space portion 41 in the unit body 5, and an arm 43 is formed in the space portion 41 by a shaft 42.
The end of the short portion of the arm 43 extending rearward is brought into contact with the disk 21, and a pin 44 is urged inward by a spring on the outer surface of the end of the long portion extending forward.
The hydraulic cylinder unit on the inner surface of the tip of the long part.
The piston rod 46 of 45 is in contact. Then, the arm 43 swings counterclockwise in FIG. 3 around the shaft 42 by the pin 44 to pull the eccentric sleeve 8 rearward (to the right in FIG. 3) via the disc 21, and the eccentric sleeve 8 The back side of the flange 8a provided at the tip is strongly pressed against the step 5a of the unit body 5 to lock the eccentric sleeve 8 in the axial direction. Further, by supplying the working oil to the oil chamber 47 of the hydraulic cylinder unit 45, the piston rod 46 is projected so that the arm 43 is swung clockwise and the locked state is released.

In this way, by firmly locking the eccentric sleeve 8 in the circumferential direction and the axial direction by the hydro chuck mechanism 30 and the toggle chuck mechanism 40, the spindle shaft 9 will not be displaced during the working operation.

On the other hand, as shown in FIG. 1, the second processing unit U2 slidably engages the unit main body 51 with the rail 50 provided on the base 1, and as shown in FIG.
Rotate the ball screw 52 rotatably in parallel with the axial direction of U2,
The nut portion 53 of the unit body 51 is screwed onto the ball screw 52, and the ball screw 52 is rotated by the servo motor 54 attached to the base 1 so that the unit body 51 moves back and forth with respect to the work W.

A through hole 55 is formed in the unit body 51 in the axial direction,
A spindle shaft 56 is rotatably supported in the through hole 55 via a bearing. Here, the axis l1 of the spindle shaft 9 of the first machining unit U1 and the second machining unit U2
The axis l2 of the spindle shaft 56 is orthogonal to the plan view as shown in FIG. 1, and is vertically displaced as shown in FIG. 6 in a front view. The imaginary line 13 in FIG. 6 is the locus of the axis 11 of the spindle shaft 9 when the eccentric sleeve 8 of the first processing unit U1 is rotated.

As shown in FIG. 5, a tool holder 57 is attached to the tip of the spindle shaft 56 via a quick change adapter, a cutting blade 58 is attached to the tool holder 57, and a pulley 59 is attached to the rear end of the spindle shaft 56. And the cutting water supply pipe 61 through the rotary joint 60
Further, a belt 64 is stretched between a pulley 63 which is rotated by a motor 62 attached to the unit main body 51 and the pulley 59, and a spindle shaft 56 is rotated.

Next, the pallet P will be described with reference to FIGS. 2 and 6.

An opening 70 facing the tool holder 10 of the first processing unit U1 is formed in the center of the pallet P. Clamp cylinders 71 ... Are arranged around the opening 70, and the clamp cylinder 71 is provided.
The work piece W is palletized P by the clamp claw 72 attached to the rod of the clamp cylinder 71 by compressing the ...
To hold.

On the other hand, a pallet fixing jig 73 is erected on the base 1, and the pallet P moving on the rail 74 is fixed to the pallet fixing jig 73. That is, guide bars 75, 75 projecting forward are attached to the front surface of the pallet fixing jig 73, and the guide holes 76 provided in the pallet P are engaged with the guide bars 75, 75 to position the pallet P.

Further, the pallet fixing jig 73 is provided with a shift mechanism 80 for shifting the pallet P in the front-rear direction indicated by the arrow S in FIG. This shift mechanism 80 is provided with cylinder units 81 at four positions on the front surface side of the pallet fixing jig 73, and a piston rod 82 of this cylinder unit 81 penetrates through a hole 83 formed in the pallet P to project to the front of the pallet P. A clamp claw 84 is attached to the front end of the hole 83, and a shift amount adjusting collar 85 is exchangeably attached to one end of the hole 83. In addition, a protrusion 86, which the tip of the clamp claw 84 abuts when the shift cylinder unit 81 is compressed, and a work reference seat 87 are provided on the front surface of the pallet P and the pallet positioning on the back surface of the pallet P and the front surface of the pallet fixing jig 73. Standard seats 88 and 89 are provided.

Further, a proximity switch 90 for confirming the shift of the pallet is provided on the side of the pallet P, and the proximity switch 90 is turned on.
A dog 91 that is turned off is attached to the side end of the pallet P.

The operation of the workpiece processing apparatus having the above-mentioned configuration will be described below.

First, the work W is brought into contact with the pallet P and positioned, and then the work W is fixed to the pallet P by the plurality of clamp cylinders 71 and the clamp claws 72. Next shift mechanism 80
Adjusting collar 85 for the cylinder unit 81
Abut the piston rod step of cylinder unit 81 to
The pallet P is shifted in the direction of arrow S. This shift is performed in order to prevent the blade 58 attached to the tool holder 57 from hitting a small diameter portion of the work W when the tool holder 57 of the second processing unit U2 is advanced and inserted into the work W. . Therefore, the shift amount is sufficient as long as the blade 58 does not hit a part of the work W.

When the work W is shifted as described above, the first and second machining units U1 and U2 are moved forward, the tool holders 10 and 57 of the respective machining units U1 and U2 are inserted into the work W, and then the work W is shifted. Compress the cylinder unit 81, press the clamp claw 84 against the protrusion 86, and
Are brought into contact with each other to firmly fix the pallet P to the pallet fixing jig 73. In this state, a predetermined blade of the blades 11 and 58 attached to the tool holders 10 and 57 is in contact with the workpiece W to be processed.

Then, in the above state, the spindle shaft 9,56 is connected to the motor 15,6
Rotate with the drive of 2 to cut the work area. still,
When there are a plurality of parts to be processed, the processing units U1 and U2 may be moved forward or backward.

Further, when the parts to be machined by the first and second machining units U1 and U2 relatively change their positions due to a model change or the like, for example, the hole W1 of the work W cut by the first machining unit U1, When the workpiece W to be cut by the first machining unit U2 is vertically eccentric to the hole W2, the positioning pin 27 of the first machining unit U1 is used.
Is pulled out from the engaging hole 23 formed in the arm 22 of the positioning mechanism 20, the lever 24 is grasped and the eccentric sleeve 8 is rotated by a predetermined angle (interval of 15 °) to move the axis l1 of the spindle shaft 9 to a predetermined height position. Then, at that position, the positioning pin 27 is engaged with the engagement hole 23 to rotate the eccentric sleeve 8 by a predetermined angle.
Also, the locked state of the toggle chuck mechanism 40 is released.

When the positioning of the eccentric sleeve 8 is completed in this way, the hydro chuck mechanism 30 and the toggle chuck mechanism
The eccentric sleeve 8 is locked to the unit main body 5 in the circumferential direction and the axial direction by 40.

Here, the order of locking the eccentric sleeve 8 is as follows. That is, when the eccentric sleeve 8 is rotated with respect to the unit main body 5 and stopped at a predetermined position, since there is a minute gap between the eccentric sleeve 8 and the unit main body 5, the eccentric sleeve 8 sinks due to its own weight after the stop. . Therefore, the hydrochuck mechanism 30 is locked after waiting until this subsidence disappears and then settling down. Here, since the elastic annular member 31 of the hydro chuck mechanism 30 is deformed according to the depression of the eccentric sleeve 8, it is convenient to wait and lock the depression.

Also, the axis line of the spindle shaft 9 of the first processing unit U1
When l1 is changed in the vertical direction and the position of the axis l1 is also changed in the horizontal direction at the same time, and the attachment position of the work W to the pallet P is changed accordingly, the left and right of the machining site cut by the second machining unit U2 are changed. The position is displaced with respect to the blade 58 of the second processing unit U2. In this case, the position of the second processing unit U2 is adjusted by rotating the ball screw 52 by the servo motor 54 and moving the second processing unit U2 forward or backward.

(Effects of the Invention) As described above, according to the present invention, even if the machining position is changed due to a model change or the like, the position of one machining unit constituting the machining device is changed without changing the machining device. This is advantageous in terms of cost, and it is also advantageous in terms of space because it is not necessary to prepare different devices for each model. Further, since it is not necessary to shift the spindle shaft of the other processing unit in the direction perpendicular to the axis, it is possible to accurately maintain the perpendicularity between the one spindle shaft and the other spindle shaft.

[Brief description of the drawings]

FIG. 1 is an overall plan view of a work processing apparatus according to the present invention, FIG. 2 is an enlarged view of an essential part of FIG. 1, FIG. 3 is a sectional view of a first processing unit, and FIG. FIG. 5 is a sectional view of the second processing unit, and FIG. 6 is a front view of the pallet. In the drawing, 1 is a base, 5 and 51 are processing unit bodies, 8 is an eccentric sleeve, 9 and 56 are spindle shafts, 10 and 57 are tool holders, 20 is a positioning mechanism, 30 is a hydro chuck mechanism,
40 is a toggle chuck mechanism, U1 and U2 are processing units, and W is a work.

 ─────────────────────────────────────────────────── --- Continuation of front page (72) Inventor Koichi Fujii 1-10-1 Shin-Sayama, Sayama-shi, Saitama Honda Engineering Co., Ltd. (56) References JP-A-63-109907 (JP, A) JP-A-SHO 58-181503 (JP, A)

Claims (1)

(57) [Claims] 1. A machining unit in which a machining tool holder 10 is attached to the tip of a spindle shaft 9, and another machining unit in which a machining tool holder 57 is attached to the tip of a spindle shaft 56 orthogonal to the spindle shaft 9. And a spindle shaft 9 of one machining unit is rotatably supported in an eccentric sleeve 8, and the eccentric sleeve 8 is rotatably held by a unit main body 5. In the workpiece processing apparatus, a plurality of guide bars are provided on the front surface of the one processing unit.
Clamp cylinder for movably mounting pallet P via 75 and clamping work W on this pallet P
71 and a clamp claw 72 are attached, and further, a shift mechanism 80 for pushing and pulling the pallet P in the direction perpendicular to the spindle shaft 56 of the other processing unit on the front surface of the one processing unit.
Is provided, and the pallet P is extruded by the shift mechanism 80 so that the work W
Is moved to the insertion position of the spindle shaft 56 of the other processing unit, and the work mechanism W is moved to the processing position by pulling the pallet P by the shift mechanism 80.