JP4477586B2 - Double-sided milling machine - Google Patents

Double-sided milling machine Download PDF

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Publication number
JP4477586B2
JP4477586B2 JP2006051629A JP2006051629A JP4477586B2 JP 4477586 B2 JP4477586 B2 JP 4477586B2 JP 2006051629 A JP2006051629 A JP 2006051629A JP 2006051629 A JP2006051629 A JP 2006051629A JP 4477586 B2 JP4477586 B2 JP 4477586B2
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Japan
Prior art keywords
clamp
milling machine
double
workpiece
pressing tool
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Expired - Fee Related
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JP2006051629A
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JP2007229828A (en
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章 島崎
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株式会社中央精機
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Description

  The present invention relates to a double-sided side milling machine. More specifically, the present invention relates to a double-headed side milling machine that can simultaneously process two opposing surfaces of a workpiece.

As a conventional double-sided side milling machine, there is the following conventional example (see Patent Document 1).
This conventional example is a milling machine with a built-in numerical controller that selectively performs four-side milling on the front, rear, left, and right sides of a rectangular workpiece and milling only the left and right sides by performing required positioning of the workpiece. .

In the milling machine, a milling machine is attached to the main shafts of the first and second heads. A table that is rotated around a vertical axis by a numerical control device is provided so as to be movable in the front-rear direction along a moving path disposed between the first and second heads. It is rotatably installed on a table base that is controlled to move.
The left and right milling cutters can simultaneously mill two opposing surfaces of the workpiece that have been positioned and set on the table as the spindle rotated by a drive motor (not shown).
A portal frame is erected on the table base so as to straddle the table, and a pressing cylinder is provided at the center of the portal frame.

  The above conventional example will be further described with reference to FIG. As shown in the figure, a pressing tool 136 is attached to the lower end of the vertical pressing shaft provided on the rod 133 of the pressing cylinder 127 so as to be rotatable about a vertical axis. It is set so as to coincide with the rotation axis of the table 106 that is assumed to have stopped. The pressing tool 136 presses the work positioned and set on the table 106 by the downward protrusion of the rod 133, so that the work can be fixed on the table 106. Can rotate around the rotation axis.

However, in the above conventional example, there is a problem that even if the table 106 is rotated, the workpiece W does not always rotate exactly the same rotation angle.
That is, if the rotation angle of the pressing tool 136 is slightly short due to friction between the rod 133 of the pressing cylinder 127 and the pressing tool 136, the rotation angle of the work W is also slightly short and the indexing angle becomes inaccurate.
Further, if the workpiece W is not a single piece and is a workpiece in which a plurality of plate-like workpieces W1 to Wn are stacked, a slight slip occurs between the plate-like workpieces W1 to Wn, and the side surface of the workpiece W is displaced. Therefore, there is a problem that accurate end face processing cannot be performed.

JP2003-11012A

SUMMARY OF THE INVENTION In view of the above circumstances, an object of the present invention is to provide a double-sided side milling machine that is capable of accurate end face processing without causing a rotational shift in a laminate of workpieces.

A double-sided side milling machine according to a first aspect of the present invention is a double-sided side milling machine for machining a side surface of a workpiece in which a plurality of plate-like workpieces are stacked, and includes two machining heads arranged opposite to each other, and the two machining heads. A machining frame provided so as to be movable so as to pass through; an indexing table provided at a lower part of the machining frame that rotates around a vertical axis; and the index provided at an upper part of the machining frame. and clamping in the axial and same axis of the platform consists of an upper clamping mechanism for clamping the workpiece on the indexing table, the upper clamping mechanism, the upper clamp consisting of a clamp cylinder and the rod, said indexing table In order to clamp the upper workpiece by the upper clamp, the upper clamp includes a pressing tool that transmits the pressing force of the upper clamp, and the pressing tool is attached to the rod of the upper clamp. Tsu is rotatably mounted about the axis of the de, is characterized in that so as to rotate said pushers in a controlled motor.
Double head sides milling machine of the second invention is the first invention, the pushers is characterized in that the relative rod of the upper clamp is mounted rotatably via a thrust bearing.
In the double-sided side milling machine of the third invention, in the first invention, the control motor starts and stops in synchronization with the indexing base, and rotates the pressing tool by the same angle.
It is characterized by

According to the first invention, the pressing tool can be rotated by the control motor in accordance with the rotation of the work by the indexing table, so that friction does not occur between the pressing tool and the work, and the work is accurately set to the indexing angle. Can be rotated together. Therefore, even workpiece workpiece has a plurality product layer plate workpiece, no deviation in the rotational direction between the plate-shaped workpiece. Therefore , the end surface of the workpiece can be processed at an accurate angle. Furthermore, since only the pressing tool of the upper clamp mechanism is rotated, the resistance is reduced as compared with the case of rotating the whole, and the rotation angle control by the control motor can be performed accurately.
According to the second aspect of the present invention, since the thruster that applies the pressing force to the workpiece has the thrust bearing interposed with respect to the rod of the upper clamp, the rotational resistance is small, and the rotational angle control by the control motor can be performed accurately.
According to the third invention, the control motor starts and stops in synchronization with the indexing table and rotates the upper clamp mechanism only by the same angle. Therefore, the control motor is located between the indexing table and the workpiece, and between the upper clamp mechanism and the workpiece. There is no rotational misalignment between the two. For this reason, extremely accurate double-sided processing is possible.

Next, an embodiment of the present invention will be described with reference to the drawings.
FIG. 4 is an overall front view of a double-sided side milling machine according to an embodiment of the present invention. FIG. 5 is an overall plan view of FIG. First, the basic configuration of the double-sided side milling machine of this embodiment will be described.

4 and 5, reference numeral 1 denotes a base, and a rail 2 is provided on the upper surface of the base 1 in the front-rear direction (in FIG. 4, the front and back direction of the page, and the vertical direction in FIG. 5). A processing frame 3 is attached so as to be movable on the rail 2. The processing frame 3 includes an index table 4 at a lower portion thereof and an upper clamp 5 at an upper portion thereof.
If the upper clamp 5 is extended, the workpiece W can be fixed on the index table 4 by sandwiching the workpiece W between the lower jig 7 and the upper jig 9. If the processing frame 3 is moved back and forth, the work W can be moved back and forth together with the processing frame 3 while the work W is sandwiched between the upper jig 9 and the lower jig 7.

On the other hand, a pair of left and right machining heads 10 are provided on the left and right sides of the base 1, and the headstocks 11, 11 are located on the center line of the base 1 (intermediate between the two rails 2). It is movable in the approaching / separating direction.
A pair of main shafts are rotatably supported on the pair of main spindle bases 11 and 11, respectively, and the pair of main shafts are provided horizontally so that their axis centers coincide with each other. Cutters 13 and 13 are respectively attached to one end portions of the pair of main shafts opposite to each other, and the other end portions of the main shafts are attached to the upper portion of the main shaft base 11 by a belt or the like, for example. It is connected to the main shaft.
For this reason, if the motors 14 and 14 are driven, the cutters 13 and 13 can be rotated.

  Since it is the above basic composition, according to the double-sided side milling machine of the above-mentioned embodiment, work W is attached on index stand 4, and a pair of processing heads 10 and 10 are processed frame 3 by the amount which processes work W. Move towards. Then, by driving the motor 13 to rotate the cutter 13 and feeding the workpiece W in the direction of the cutter 13 by the machining frame 3, the front and back surfaces of the workpiece W can be cut at a time by the cutter 13.

Next, the index table 4 and the upper clamp 5 will be described.
FIG. 1 is a side view of an essential part of a double-sided side milling machine according to an embodiment of the present invention.
As shown in FIG. 1, the processing frame 3 is a substantially C-shaped member in a side view, a travel guide 3a and the index table 4 are provided at the lower part of the frame, and an upper clamp 5 is provided at the upper part of the frame. Installed.
The index table 4 is a device that equally divides the outer peripheral surface of the work W into an arbitrary number, and includes an upper index plate 41, a lower index plate 42, a drive shaft 43 that rotationally drives the upper index plate 42, This is a known device composed of a servo motor 44 that rotates the drive shaft 43.
The lower index plate 42 is fixed, and the upper index plate 41 can be swung in a horizontal plane and fixed in an arbitrary circumferential direction. A pallet 6 is fixed on the upper surface of the upper index plate 41, and a lower jig 7 is placed on the upper surface of the pallet 6.

  The upper clamp 5 includes a clamp cylinder 51 and a rod 52. The clamp cylinder 51 is fixed to the processing frame 3, and the rod 52 is disposed vertically downward. A pressing tool 8 is connected to the rod 52, and the pressing tool 8 presses the workpiece W via the upper jig 9. The upper clamp 5 and the pressing tool 8 correspond to the upper clamp mechanism referred to in the claims.

Next, the rotating structure of the upper clamp mechanism will be described with reference to FIG.
FIG. 2 is a cross-sectional view of the main part of the upper clamp mechanism.
An upper outer cylinder 53 is screwed onto the outer periphery of the rod 52 of the clamp cylinder 51, and a lower outer cylinder 54 is fixed to the lower end of the upper outer cylinder 53 with a bolt or the like. The inner circumference of the lower outer cylinder 54 is formed in a tapered cylinder shape, and the inner diameter at the lower end is smaller than the inner diameter at the upper end.
On the other hand, the pressing tool 8 is a round bar-like member, and an upper inner cylinder 81 is fitted to an upper end portion thereof, and is fixed together with a bearing holder 82 attached to the upper surface thereof with a bolt or the like.
The upper inner cylinder 81 is a tapered tubular member, and has an outer diameter at the upper end and a smaller inner diameter at the lower end. And it is accommodated in the lower outer cylinder 54 on the rod 52 side, and is held rotatably around the axis.

  A thrust bearing 83 is fitted into the bearing holder 82, and the thrust bearing 83 is placed in a bearing holder portion 55 formed on the inner periphery of the lower end of the upper outer cylinder 53 on the rod side. The thrust bearing 83 allows the pressing tool 8 to rotate lightly even when the pressing force of the clamp cylinder 51 acts on the pressing tool 8 strongly.

Next, the rotation mechanism of the pressing tool 8 will be described.
A large-diameter gear 84 is fitted on the outer periphery of the upper inner cylinder 81. A small-diameter gear 85 is engaged with the large-diameter gear 84, and the main shaft of the control motor 86 is fixed to the small-diameter gear 85. The control motor 86 is fixed at an appropriate position on the processing frame 3.
The control motor 86 is a motor that can accurately control the rotation angle, such as a servo motor or a stepping motor. The start / stop is controlled by software so as to synchronize with the servo motor 44 of the index table 4.

Next, the rotating action of the pressing tool 8 will be described with reference to FIG.
FIG. 3 is an explanatory diagram of the operation of the upper clamp rotating mechanism.
When the processing of the pair of side surfaces of the workpiece W is finished, the pallet 6 is rotated by 90 ° by the index table 4 in order to process the other pair of side surfaces. At this time, the control motor 86 is activated in synchronization with the rotation of the pallet 6 and thus the index table 4 to rotate the pusher 8 by 90 °. The pressing tool 8 can be rotated with low friction by the thrust bearing 83, and no deviation occurs between the rotation of the pressing tool 8 and the rotation of the pallet 6.
For this reason, there is no rotational displacement between the pressing tool 8 and the upper jig 9 (reference numeral X1) and between the upper jig 9 and the upper surface of the workpiece W (reference numeral X2).
For this reason, the right angle between a pair of side surface of the workpiece | work W and another pair of side surface can be taken out correctly. In addition, since there is no rotational deviation between the respective plate-like workpieces of the workpiece W, all the plate-like workpieces can be accurately machined.

  In the above embodiment, only the pressing tool 8 is rotated, so that the rotation can be controlled with a small resistance. However, if the control motor 86 has sufficient capability, the rod 52 of the upper clamp 5 may be rotated, or the entire upper clamp 5 may be rotated. You may make it rotate.

It is a principal part side view of the double-headed side milling machine which concerns on one Embodiment of this invention. It is principal part sectional drawing of an upper clamp mechanism. It is operation | movement explanatory drawing of an upper clamp mechanism. 1 is an overall front view of a double-sided side milling machine according to an embodiment of the present invention. It is a whole top view of the double-headed side milling machine. It is explanatory drawing of the problem of a prior art example.

1 Base 3 Processing Frame 4 Indexing Table 5 Upper Clamp 6 Pallet 7 Lower Jig 8 Pressing Tool 9 Upper Jig 83 Thrust Bearing 86 Control Motor

Claims (3)

  1. A double-sided side milling machine that processes the side of a workpiece in which a plurality of plate-like workpieces are stacked,
    Two machining heads arranged opposite each other;
    A machining frame provided so as to be movable between the two machining heads;
    An index table provided at a lower portion of the processing frame and rotating around a vertical axis;
    The provided above the processing frame, said clamping operation with indexing table axis and coaxially, made of an upper clamping mechanism for clamping the workpiece on the indexing table,
    The upper clamp mechanism is composed of an upper clamp composed of a clamp cylinder and a rod, and a pressing tool for transmitting the pressing force of the upper clamp to clamp the work on the index table by the upper clamp.
    The pusher is attached to the rod of the upper clamp so as to be rotatable about the axis of the rod,
    The double-sided side milling machine, wherein the pressing tool is rotated by a control motor .
  2. The double-sided side milling machine according to claim 1, wherein the pressing tool is rotatably attached to a rod of the upper clamp via a thrust bearing.
  3. The double-sided side milling machine according to claim 1, wherein the control motor starts and stops in synchronization with the indexing base and rotates the pressing tool by the same angle.
JP2006051629A 2006-02-28 2006-02-28 Double-sided milling machine Expired - Fee Related JP4477586B2 (en)

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JP2006051629A JP4477586B2 (en) 2006-02-28 2006-02-28 Double-sided milling machine

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Application Number Priority Date Filing Date Title
JP2006051629A JP4477586B2 (en) 2006-02-28 2006-02-28 Double-sided milling machine

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JP2007229828A JP2007229828A (en) 2007-09-13
JP4477586B2 true JP4477586B2 (en) 2010-06-09

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CN102476210A (en) * 2010-11-22 2012-05-30 福州钜立机动车配件有限公司 Double-side milling machine for processing connecting rod
CN106881483A (en) * 2017-04-01 2017-06-23 东莞市中佑机械科技有限公司 A kind of full-automatic double-ended billot machine
CN108356337A (en) * 2017-02-17 2018-08-03 苏州国质信网络通讯有限公司 A kind of fish-tail cutter Pneumatic fixing device

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JP5856212B2 (en) 2014-03-19 2016-02-09 ファナック株式会社 Jig and processing system for supporting a workpiece rotatably with respect to a tool of a machine tool
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CN104759666B (en) * 2015-03-17 2017-09-12 温惠珍 A kind of method for milling of lifting workpieces right angle precision
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CN104841984A (en) * 2015-04-13 2015-08-19 宁波鑫富晨数控设备制造有限公司 Multi-surface machining numerical control machine tool
CN106270668A (en) * 2015-06-09 2017-01-04 东莞市固达机械制造有限公司 A kind of numerical control bilateral milling machine with rotary table
CN105127490A (en) * 2015-10-14 2015-12-09 陈美青 Horizontal-type engraving and milling machine
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Publication number Priority date Publication date Assignee Title
CN102476210A (en) * 2010-11-22 2012-05-30 福州钜立机动车配件有限公司 Double-side milling machine for processing connecting rod
CN108356337A (en) * 2017-02-17 2018-08-03 苏州国质信网络通讯有限公司 A kind of fish-tail cutter Pneumatic fixing device
CN106881483A (en) * 2017-04-01 2017-06-23 东莞市中佑机械科技有限公司 A kind of full-automatic double-ended billot machine

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