JPH0425333A - Double-face machining device - Google Patents

Abstract

PURPOSE:To perform efficient mounting and dismounting of a workpiece by mounting a horizontal cutting machine provided with a main spindle which faces rear side, a horizontal cutting machine provided with a main spindle which faces front side, and a workpiece hold device which machines by respective machining device on a double face machining device. CONSTITUTION:A double-face machining device M is moved to a machining position by servo motors 32, 33 in the condition where a workpiece hold tool 31 of a first workpiece hold device 30 is fixed, and machining is done on the front face of a workpiece W by a first horizontal cutting machine 10. In this case, the workpiece hold device 30 is moved forward and backward and to the right and left by the servo motors 32, 33 as required. Machining is done while a spindle 11 is moved up and down. Next, the workpiece hold device 30 is moved to a first workpiece delivery position P3, and a second workpiece hold device 40 is moved to a second delivery position Q3 by servo motors 42, 43 to deliver the workpiece W from the workpiece hold tool 31 to a workpiece hold tool 41. Next, the workpiece hold device 40 is moved to the machining position, and machining is done on the rear face of the workpiece W by a second horizontal cutting machine 20.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a double-sided machining device that can efficiently machine both sides of a workpiece.

[Prior art]

Conventionally, various double-sided machining devices that cut both sides of a workpiece have been proposed.
-149951), a workpiece is placed on the base of a C-shaped frame that is C-shaped in side view, and the workpiece is pressed and fixed to the base with a clamp device provided on the upper frame of the C-shaped frame, and the workpiece is fixed on both the left and right sides of the C-shaped frame. A double-sided simultaneous milling machine has a pair of horizontal cutting machines facing each other, and cuts both sides of the workpiece simultaneously with the pair of cutting machines while moving the C-shaped frame with the workpiece fixed to the C-shaped frame. A processing device was proposed.

[Problem to be solved by the invention]

In the above-mentioned double-sided simultaneous milling machine, the workpiece is supported and fixed on a C-shaped frame with an open front because it is necessary to attach and detach the workpiece, but the vertical dimensions of the workpiece are restricted and the workability of attaching and detaching the workpiece is difficult. The bad news is that the cantilevered upper frame of the C-shaped frame becomes very large in order to securely fix the workpiece, and that the cutting force is unbalanced when cutting asymmetrically on both sides of the workpiece. Problems include that the workpiece tends to move minutely, reducing cutting accuracy, and that it is difficult to firmly secure the workpiece with a clamp device when machining a plate-shaped workpiece with a small thickness in the left and right direction. be.

SUMMARY OF THE INVENTION An object of the present invention is to provide a double-sided machining device that has excellent workability in attaching and detaching a workpiece, has few restrictions on the dimensions of the workpiece, can strongly fix the workpiece, and can improve machining accuracy.

[Means to solve the problem]

A double-sided machining device according to the present invention includes a first horizontal cutting machine that is at least vertically movable and has a rearward-facing main shaft;
The first
A second horizontal cutting machine is provided at a position a predetermined distance from the horizontal cutting machine in the left and right direction and rearward of the first horizontal cutting machine, and the workpiece to be processed by the first horizontal cutting machine can be freely attached and detached. a workpiece holding section for holding at least a first workpiece;
A first workpiece that is movable in the left-right direction and can be moved in the front-rear direction by a predetermined stroke between a processing position facing the horizontal cutting machine and a first workpiece delivery position between the first and second horizontal cutting machines. It has a holding means, a first driving means for independently moving and driving the first work holding means in the left-right direction and the front-back direction, and a work holding part for holding the work to be machined by the second horizontal cutting machine, and at least a second work holding means that is movable in the left-right direction and capable of moving a predetermined stroke in the front-back direction between a processing position facing the second horizontal cutting machine and a second work delivery position facing the first work delivery position; , a second drive means for independently driving the second work holding means in the left-right direction and the front-back direction.

[Effect]

In the double-sided machining device according to the present invention, with the workpiece fixed to the workpiece holding part of the first workpiece holding means, the first workpiece holding means is moved to the processing position by the first drive means, and the first horizontal cutting process is performed. A machine performs machining on the front of the workpiece. In this case, the first workpiece holding means is moved left and right or back and forth by the first drive means as needed, and the workpiece is processed while moving the spindle head in the up and down direction.

Next, the first work holding means is moved to the first work transfer position by the first driving means, and the second work holding means is moved to the second work holding means.
The first workpiece holding means is moved forward or backward by the first drive means as needed, and the first workpiece holding means is moved forward or backward by the first drive means as needed.
The workpiece holding means is moved forward or backward by the second drive means as necessary, and the workpiece is transferred from the workpiece holding portion of the first workpiece holding means to the workpiece holding portion of the second workpiece holding means.

Next, the second workpiece holding means is moved to the processing position by the second drive means, and the rear surface of the workpiece is machined by the second horizontal cutting machine.

In this double-sided machining device, the main shafts of the first and second processing machines can move in the vertical direction, so the height dimension of the workpiece that can be machined is not so restricted, and the first and second workpiece holding means can be moved back and forth. Since the workpiece can be moved by a predetermined stroke in the direction, the front-to-back dimension of the workpiece that can be machined is not so restricted, and since the workpiece is held in the workpiece holding portions of the first and second workpiece holding means, even thin plate-shaped workpieces can be processed at high speeds. Can be processed with precision.

Since the upper parts of the work holding parts of the first and second work holding means are open, it is possible to easily attach and detach the work.
If the left and right movement strokes of the first and second workpiece holding means are sufficiently secured, a dedicated workpiece mounting position can be secured on the side opposite to the first workpiece transfer position with respect to the processing position. Further, since a dedicated workpiece removal position for removing the workpiece can be secured on the opposite side of the second workpiece transfer position to the processing position, the workpiece can be efficiently attached and removed.

When transferring the workpiece from the first workpiece holding means to the second workpiece holding means, there is no need to invert or position the workpiece, which reduces workpiece handling work.

Since the workpiece can be firmly fixed in contact with the workpiece holding portion of the first workpiece holding means and the workpiece holding portion of the second workpiece holding means, machining accuracy can be improved.

〔Effect of the invention〕

According to the double-sided machining device according to the present invention, the above [effect]
As explained in the section above, it is possible to process both small and large workpieces without being subject to dimensional constraints, and the ability to attach and detach the workpieces to and from the workpiece holding parts of the first and second workpiece holding means. Effects such as being able to perform work efficiently, reducing work handling work, and improving the accuracy of machining performed on the workpiece can be obtained.

〔Example〕

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

As shown in FIGS. 1 and 2, a first horizontal cutting machine IO with the main shaft 11 facing backward is provided on the right end of the front part of the base frame B of the double-sided machining device M, and the base A second horizontal cutting machine 20 is provided on the rear left end of the frame B, with the main shaft 21 facing forward.

The main shaft 11 of the first processing machine IO is driven to move vertically by a servo motor 12 and rotated by a main shaft motor 13, and in this embodiment, a milling tool 14 is attached to the rear end of the main shaft 11. There is.

The main shaft 21 of the second processing machine 20 is driven to move vertically by a servo motor 22 and rotated by a main shaft motor 23, and in this embodiment, a milling tool 24 is attached to the front end of the main shaft 21. . The second processing machine 20 is disposed at a position in the left-right direction separated by a predetermined distance to the left with respect to the first processing machine IO.

A first work holding device 30 is provided on the right side of the rear left end of the base frame B, and the first work holding jig 31 is mounted at a position P1 on the right side of the first processing machine IO. It is movable in the left-right direction between a processing position P2 facing the rear of the first processing machine 10 and a first workpiece delivery position P3 between the first and second processing machines 10 and 20. The workpiece holding jig 31 is movable in the front and back direction by a predetermined stroke.

That is, the support stand (shown in the figure) that supports the first workpiece holding jig 31 is movably attached to the base frame B over the three positions mentioned above.
The first workpiece holding jig 31 is guided and supported on the support base so as to be movable by a predetermined stroke in the front and rear direction. The support stand is driven to move in the left-right direction with respect to the base frame B by a servo motor 32 via a ball screw shaft, and the first work holding jig 31 is moved in the front-rear direction with respect to the support stand via a ball screw shaft by a servo motor 33. Driven to move.

A second work holding device 40 is provided on the left side of the front right end of the base frame B, and the second work holding jig 41 is located at a work removal position Q1 to the left of the second processing machine 20. and a processing position Q2 facing the front of the second processing machine 20, and a second workpiece delivery position Q3 located between the first and second processing machines 10 and 20 (however, this is opposed to the front of the first workpiece delivery position P3). The second workpiece holding jig 41 is movable in the left-right direction between the two positions, and the second workpiece holding jig 41 is movable in the front-rear direction by a predetermined stroke.

That is, the support stand (shown in the figure) that supports the second work holding jig 41 is movably attached to the base frame B over the three positions mentioned above.
The second work holding jig 41 is guided and supported on the support base so as to be movable by a predetermined stroke in the front and rear direction. The support stand is driven to move left and right with respect to the base frame B by a servo motor 42 via a ball screw shaft, and the second work holding jig 41 is moved back and forth with respect to the support stand via a ball screw shaft by a servo motor 43. Driven to move in the direction.

The guide mechanism and drive mechanism for moving and driving the first and second work holding jigs 31 and 41 in the left-right and front-back directions are basically the same as those used in a normal numerically controlled machine. Since they are similar, detailed explanation will be omitted.

The main shaft motor 13.23 is controlled and the servo motor 1
A control unit 50 is provided to numerically control each of 2, 22, 32, 33, 42, and 43, and an operation panel 60 is connected to the control unit 50. The control unit 50 and the operation panel 60 are similar to those of a normal numerically controlled machine, so a detailed explanation will be omitted.

A vertical work holding surface 34 is formed on the front side of the first work holding jig 31 to hold the work W etc. in abutting manner, and the work holding surface 34 has two T-grooves separated vertically. 35・
36 are recessed in the left-right direction, and a pair of clamp devices 70 are installed in each of the T-slots 35 and 36 so as to be opposed to each other and whose positions can be adjusted left and right.

A vertical work holding surface 44 is formed on the rear side of the second work holding jig 41 to hold the work W etc. in abutting manner, and the work holding surface 44 has two T grooves separated vertically. 45・
46 is recessed in the left-right direction, the lower T-slot 45 is provided at an intermediate height position between the T-slots 35 and 36, and the upper T-slot 46 is provided at a slightly higher position than the front and rear T-slots 36. T
A pair of clamp devices 70 are installed in the grooves 45 and 46 so as to be able to adjust their positions laterally to face each other.

Since all of the above-mentioned clamping devices 70 have the same structure, the right-hand clamping device 70 of the second work holding jig 41 will be explained with reference to FIG.

A clamp arm 72 is rotatably provided at the left end of the clamp body 71 via a pivot shaft 73, and at the left end of the upper end of the clamp arm 73, the end surface of the workpiece W is moved leftward and forward. A pressing point 72a is formed, and a hydraulic cylinder 74 for pushing and driving the clamp arm 72 to the left is provided in the clamp body 71, and a ram 75 of the hydraulic cylinder 74 is a compression spring supported by a spring receiver 76. 77 in the retracting direction, the clamp arm 72 is urged in the clamp release direction by the torsion spring 78, and hydraulic pressure is supplied from an external hydraulic supply device (path shown) to the clamp operating chamber 74a via the hose 79. Then, the ram 75 is driven to move forward to the left, and the output portion 75a at the tip of the ram 75 clamps the clamp arm 72 to the left. It is designed to be fixed to

However, the auxiliary plate S is for adjusting the position of the workpiece W with respect to the workpiece holding surface 44 in the longitudinal direction and for preventing damage to the workpiece holding surface 44 due to cutting.

The clamp body 71 is attached to the workpiece holding surface 4 with four bolts.
4 and is fixed in a variable position. The hydraulic supply system is automatically controlled by the control unit 50.

It is of course possible to use various existing types of clamping device W70 other than the one shown in the drawings.

Next, the operation of the double-sided machining device M will be explained.

While the second work holding jig 41 is positioned at the machining position Q2 and the work W is being machined, the first work holding jig 31 is positioned at the work mounting position PL and its work holding surface 3
An unprocessed workpiece W is attached to 4 and fixed in a predetermined posture using a clamping device 70.

Next, the second workpiece holding jig 41 is moved to the workpiece removal position Q1 after completion of machining, and the workpiece W is removed.

During this time, the first workpiece holding jig 31 is moved to the processing position and the workpiece W is processed.

Next, after the processing of the workpiece W by the first workpiece holding jig 31 is completed, the first workpiece holding jig 31 is moved to the first workpiece delivery position P3.
In parallel with this, the second work holding jig 41 is moved to the second work transfer position Q3.

However, at this time, the first
and the first and second workpiece transfer positions P3 and 41, respectively, with the longitudinal positions of the second workpiece holding jigs 31 and 41 adjusted.
It will be moved to Q3.

Next, the first and second work holding jigs 31 and 41 are moved relatively close to each other, and the work W is held in contact with the auxiliary plate S of the work holding surface 44 of the second work holding jig 41. Second
The work W is fixed by the four sets of clamp devices 70 of the work holding jig 41, and then the clamps of the four sets of clamp devices 70 of the first work holding jig 31 are released.

Next, the first workpiece holding jig 31 is mounted at position P1.
and move the second work holding jig 41 to the processing position Q.
2 to process the workpiece W.

By repeating such steps, the front and rear surfaces of the workpiece W can be efficiently machined by this double-sided machining device M.

Here, to provide a supplementary explanation, the first and second processing machines 10 and 2
0, the positions of the main spindles 11 and 21 are controlled in the vertical direction as necessary, and the first and second workpiece holding jigs 31 and 41 are precisely controlled in the left-right and/or front-back directions as necessary. Position is controlled by numerical control. For example, spindle 1
When a drill is attached to the first and second work holding jigs 31 and 21 to perform multiple drilling operations on the workpiece W, the control unit 50 controls the left and right positions of the first and second workpiece holding jigs 31 and 41 based on predetermined numerical control information input in advance. Precisely control the longitudinal position.

In the above-mentioned double-sided machining device M, when the first work holding jig 31 is positioned at the work mounting position P1, the work W can be mounted efficiently because the work space is open above and in front of the first work holding jig 31. Similarly, when the second workpiece holding jig 41 is positioned at the workpiece removal position Q1, the workpiece W can be removed efficiently since the workspace above and behind it is open.

The main shafts 11 and 21 of the first and second processing machines 10 and 20 are movable in the vertical direction, and the first and second workpiece holding jigs 31 and 21 are movable in the vertical direction.
41 is movable in the left-right direction and the front-back direction, cutting can be performed not only on thin plate-shaped workpieces W in the front-rear direction, but also on tall workpieces W or thick block-shaped workpieces in the front-rear direction. I can do it. Moreover, the workpiece holding surfaces 34 and 44 of the first and second workpiece holding jigs 31 and 41
Since the workpiece W is directly or indirectly held in abutment and fixed by the clamp device 70, the workpiece W will not be deformed or displaced by the cutting force, so that highly accurate machining can be achieved.

Since the work W can be automatically or semi-automatically transferred from the first work holding jig 31 to the second work holding jig 41, the work W can be handled efficiently. Moreover, since the workpiece W fixed to the first workpiece holding jig 31 can be fixed to the workpiece holding surface 44 by the clamp device 70 of the second workpiece holding jig 41, the first workpiece holding jig 31 can be fixed to the workpiece holding surface 44.
When transferring the workpiece W from the first workpiece holding jig 41 to the second workpiece holding jig 41, reversing and positioning work of the workpiece W can be omitted, and errors in positioning the workpiece W will not occur. Therefore, the accuracy of cutting the front and rear surfaces of the workpiece W can be significantly improved.

In addition, the workpiece mounting for the first workpiece holding jig 31 is at position P.
I may be omitted and the first work holding jig 31 may be configured to be movable between the processing position P2 and the first work transfer position P3, and the workpiece removal position Q for the second holding jig 41 may be configured.
1 may be omitted and the second work holding jig 41 may be configured to be movable between the processing position Q2 and the second delivery position Q3.

Note that cutting in the present application includes grinding, and cutting machines also include processing machines that perform grinding.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention; FIG. 1 is a perspective view of a double-sided machining device, FIG. 2 is a schematic plan view of the same machining device,
FIG. 3 is a sectional view of the clamping device. M...Double-sided machining device, IO...1st horizontal cutting machine, 11...Main shaft, 12...Servo motor,
13...Spindle motor, 20...Second horizontal cutting machine, 21...Spindle, 22...Servo motor, 2
3. Main shaft motor, 30. First work holding device,
31..First work holding jig, 32.33.42.
43... Servo motor, 34... Work holding surface, 40
...Second work holding device, 41..Second work holding jig, 44..Work holding surface, 50..Control unit, 60..Operation panel, 70..Clamp device.

Claims (1)

[Claims] (1) A first horizontal cutting machine equipped with at least a vertically movable main shaft and facing backward, and a first horizontal cutting machine equipped with at least a vertically movable main shaft facing forward.
A second horizontal cutting machine is provided at a predetermined distance in the left and right direction from the horizontal cutting machine and rearward of the first horizontal cutting machine, and a workpiece to be processed by the first horizontal cutting machine can be freely attached and detached. It has a workpiece holding part that holds the workpiece, and is movable in the left-right direction at least between a processing position facing the first horizontal cutting machine and a first workpiece delivery position between the first and second horizontal cutting machines. The first member is movable by a predetermined stroke in the front-rear direction.
It has a workpiece holding means, a first driving means for independently moving and driving the first workpiece holding means in the left-right direction and the front-back direction, and a workpiece holding part for holding the workpiece to be processed by the second horizontal cutting machine, A second work holding means that is movable in the left and right direction and is movable in a predetermined stroke in the front and back direction at least between a processing position facing the second horizontal cutting machine and a second work delivery position facing the first work delivery position. A double-sided machining device comprising: and second drive means for independently moving and driving the second workpiece holding means in the left-right direction and the front-back direction, respectively.