JP2508527Y2 - NC trim processing machine - Google Patents

Description

[Detailed Description of the Invention] <Industrial Application Field> The present invention relates to an NC trim processing machine for trimming a material to be cut composed of a laminated plate made of aluminum alloy or the like with a rotary cutting tool.

<Prior art> When cutting a material to be cut in this type of machine tool, conventionally, in order to withstand the cutting force, a screw was fixed at a pitch of 50 to 60 mm on the center and outer periphery of the material to be cut. Was there.

<Problems to be solved by the invention> However, in order to obtain sufficient proof strength against the cutting force by the screw fastening, the screw fastening locations must be increased accordingly, which increases the man-hours for drilling without value added. In addition, there is a problem in that extra tabs need to be attached.

Then, the objective of this invention is to provide the NC trimming machine which can fix a to-be-cut material effectively and firmly, without inviting the man-hour of hole drilling.

<Means for Solving the Problems> In order to achieve the above object, an NC trim processing machine according to the present invention is an NC trim for trimming a work material composed of a laminated plate fixed with a synthetic resin rivet with a rotary cutting tool. In a processing machine, an annular holder that surrounds the rotary cutting tool and is slidably attached to the main body of the processing machine in the axial direction of the rotary cutting tool and communicates with a suction-type dust collector; And a pressing means capable of pressing and moving to the holder, and a polytetrafluoroethylene sphere that is assembled to the holder in a circumferentially discrete manner and urged downward by a spring member to roll the machined surface of the workpiece. It is characterized by that.

<Operation> According to the above configuration, the material to be cut around the rotary cutting tool is effectively pressed by the sphere without causing a flaw on the material to be cut.

<Embodiment> An embodiment of the present invention will be described below with reference to the accompanying drawings.

As shown in FIG. 1 applied to an NC router, a cylindrical case 4 is fixedly mounted on a router body 1 so as to surround a trim head 3 having a rotary cutting tool 2 fixed to its tip.

A tubular holder 5 is slidably fitted in the tubular case 4 in the vertical direction, and six air cylinders (pressing members) fixed at the outer periphery of the tubular case 4 at equal intervals in the circumferential direction and downward. Means) 6. 4a, 5a in the figure
Is a connecting bracket.

Eight housing holes 7 are formed in the lower part of the cylindrical holder 5 at equal intervals in the circumferential direction, and these housing holes 7 are made of polytetrafluoroethylene (trade name “Teflon”) as rolling elements. The spherical bodies (hereinafter referred to as Teflon spheres) 9 are assembled by being urged downward by the spring member 10 and partially protruding from the lower end surface of the cylindrical holder 5. In the figure, 11 is an adjusting screw for changing the spring constant, 12 is a spring receiver, and 13 is a bearing.

Further, a duct 14 connected to a dust collector (not shown) is connected to the cylindrical case 4, and the duct 14 is connected to the cylindrical case 4.
And through the hole passage (not shown) formed in the cylindrical holder 5 into the cylindrical holder 5.

On the other hand, a material to be cut 15 made of a laminated plate of aluminum alloy or the like is fixed on a veneer board 16 with a plurality of synthetic resin rivets 17. These rivets 17 are mechanically driven with a shimeiro of 0.01 to 0.03 mm between the rivet 17 and the size of the drill hole formed in the material to be cut 15.

With this configuration, during the cutting process, the cylindrical holder 5 is moved to the cylindrical case 4 by the expansion operation of the air cylinder 6.
Slide the Teflon sphere 9 downward against the workpiece 15
It should be pressed against the processed surface of.

As a result, the material 15 to be cut is firmly fixed, in addition to the lateral deviation prevented by the rivet 17, and the rising and deviation of the cutting portion are prevented by the Teflon ball 9.

At this time, the rivets 17 have a little elasticity and bite into the material to be cut 15 to obtain a large fixing force. Therefore, the number of rivets 17 (that is, the number of drill holes) can be reduced as compared with the conventional screw fixing method, and at the same time, there is no need for fixing. There is no need to install a meaningful tab. In addition, the Teflon ball 9 has self-lubricating properties, which eliminates the need for forced lubrication of the rotating portion and has an advantage that the material to be cut 15 is not flawed.

Further, in this embodiment, the inside of the cylindrical holder 5 becomes a negative pressure by sucking with the dust collector. As a result, all the cutting dust flying up by the rotary cutting tool 2 is sucked into the cylindrical holder 5 without being scattered to the outer periphery, and then passed through the duct 14 to be stored in the dust collector.

Needless to say, the present invention is not limited to the above-described embodiments, and various changes can be made without departing from the scope of the present invention.

<Effects of the Invention> As described above, according to the present invention, the work material around the rotary cutting tool can be pressed without a flaw by the spherical body that can smoothly move in all directions, and accordingly, the work to be cut can be performed. Precise cutting is possible by preventing the material from rising and shifting.

[Brief description of drawings]

FIG. 1 is a half sectional view showing an embodiment of the present invention. In the drawings, 1 is a router body, 2 is a rotary cutting tool, 3 is a trim head, 4 is a cylindrical case, 5 is a cylindrical holder, and 9 is a Teflon ball.

Claims (1)

(57) [Scope of utility model registration request] 1. An NC trim processing machine for trimming a material to be cut consisting of a laminated plate fixed with synthetic resin rivets with a rotary cutting tool, wherein the rotary cutting tool is surrounded by a shaft of the rotary cutting tool. An annular holder that is slidably mounted in the axial direction and communicates with a suction type dust collector, a pressing unit that can press and move the holder toward the material to be cut, and a circumferentially discrete spring on the holder and a downward spring member. An NC trim processing machine, comprising: a polytetrafluoroethylene sphere that is assembled in a biased state and can roll on the machined surface of the material to be cut.