JPS5959341A - Three-dimensional cutting machine - Google Patents

Abstract

PURPOSE:To permit a smooth trace in a three-dimensional cutting machine for a disappearing model of foamed resin by sensing trace pressure of a probe to smooth the movement of a contact head with torque proportional to three- dimensional directions. CONSTITUTION:Three-dimensional forces corresponding to irregularities on the surface of a master model act on a probe 137. The vertical force presses a load cell 119 through a spring 132 and the forward, backward, leftward and rightward forces press respectively load cells 104, 105 through press pieces 116, 117 by swing of a slide 110 around a spherical portion 111 to generate electric signals respectively proportional to the forces. The three-dimensional move torque of a contact head 100 is aided by the generated quantity of electricity. Thus, a disappearing model can be easily produced by an operator who traces the contact head along the surface of the master model with a slight force.

Description

[Detailed Description of the Invention] This invention is a contactor of a three-dimensional 9J cutting machine for producing a vanishing model using 11tt of foamed 7J solid styrene wood, which is used in the full mode method in the υ, J type manufacturing method. This invention relates to a three-dimensional cutting machine that facilitates tracing.

With conventional three-dimensional cutting machines, in order to trace the surface of the master model with a contactor, the contact head was moved by the operator. However, in order to move the contact head and make the cutting element of the cutting arm 1 move in accordance with the surface of the master model, it must be able to move smoothly in the vertical direction, left-right direction, and front-back force direction. ．． However, since frictional resistance and inertia act in each direction of movement, in the case of complex shapes, it may be difficult to trace the contactor of the contact head smoothly on the surface of the master model.

Therefore, in order to smooth the movement of the rat contact head of the present invention, the -111: trace pressure of the contactor in the vertical direction, left-right direction, and front-back force direction is sensed. It is an object of the present invention to provide a three-dimensional cutting machine that eliminates the above-mentioned drawbacks by making the movement of the contact head light with a torque proportional to the E-dimensional direction.

Embodiments of the invention will be described with reference to the drawings. 1st
Fig. and Fig. 2 d-shows the three-dimensional J front crosspiece according to the implementation ju11, -1 of the fixed base 1: 1) ij to t
Fixed rails 2 and 6 are spaced apart from each other in the longitudinal direction, and a rack 4 is arranged in the longitudinal direction at the overwhelming portion J of the fixed base 1 (see FIG. 1). The moving pace 1 is on the top surface of the fixed base 1.
0 is disposed, and the rail receiving portion 11.12 disposed on the lower surface of this movable base 10 is slidably fitted to the fixed rail 2.6, so that the movable base 10 is disposed so as to be slidable. .

Next, a hollow column 20 with a rectangular cross section is erected at the center of the moving base 10, and a weight 21 is disposed inside the hollow column 20. i'1. A chain 22 is connected to this weight 21, and this chain 22 is connected to the column 20 through a sprocket 26 disposed at the top of the column 20.
The head main body 60 disposed at i'jJ of 0 is suspended. Rails 24.25 are disposed in front of this column 20 and spaced apart in the longitudinal direction, and a force of 1 is provided on the rails 24.25. ．． A filter 2 is slidably fitted into the head body 1, and is disposed in a slidable manner with respect to the column 20 at 60% of the head body.

Next, the contact arm 40 is
Regarding the cutting arm 50, the contact arm 40 and the cutting arm 50 are disposed on the head main body 60 so as to be horizontally slidable. A contact head 100 is disposed at the lower left end of the contact arm 40, and an IJJ cutting head 51 is disposed at the lower right end of the cutting arm 50.
1 is provided with a cutting cutter 52 driven by an air motor. When the contact arm 4J and the cutting arm 50 are to be moved in the same direction, a switching mechanism in the head body 60 is used to switch the movement in the same direction. On the other hand, if the master model and the disappearing model are to be manufactured in opposite shapes, a switching mechanism disposed within the bed body 60 is used to switch the movement in the opposite direction.

Next, to describe the structure of the contact head 1 (JO) based on Fig. 6, the contact head 100 has a flange portion 1 disposed on the lower surface of the tip of the contact arm 50 on the outer periphery of the upper end of the cylinder 102.
01 is fixedly installed, and a flange portion 106 is disposed on the outer periphery of the lower end of this 1 m body 1 [J2, and this flange portion 103 has three-dimensional cutting (corresponding to the horizontal and longitudinal movement axes). Load cells 104 and 105 are disposed, and a guide bin 106 is erected on the lower surface of the trench flange portion 106. A rocking body 110 is rockably disposed within the cylinder body 102, and the rocking body A spherical part 111 is disposed at the upper end of the cylindrical body 110, and this spherical part 111 is supported by a support part 112 disposed inside the upper part of the cylindrical body 102 to swingably support the rocking body 110. A flange portion 116 is provided on the outer periphery of the +1/11 portion of the rocking body 110, and a guide hole 114 is bored in the upper surface of the flange portion 116. A first hole 115 is disposed in the center rb of the oscillator 110, and the load cells 104, 105 are fitted horizontally into the first hole 115, and the suppressors 116, 117 are fitted horizontally.
is arranged and presses the load cells 104, 105 with the tip of the presser 116°1j17.

A second hole 118 is disposed below the first hole 115, and a load cell 1, 19 is disposed in this second hole 118, and the load cell 1, 19 is connected to the axis of movement in the vertical force direction of the three-dimensional cutting machine. A pressurizer 120 is disposed at the lower part of the load cell 119 so as to be slidable in the second hole 118, and a third hole 121 is disposed in communication with the F section of the second hole 118. A slide bearing 122 is fixedly installed in the sixth hole 121, and a fourth hole 126 is disposed in communication with the lower part of the sixth hole 121. The locking portion 124 is arranged in the shape of a brim. The upper part of the sliding body 160 is slidably disposed on the slide bearing 122, and the sliding body 160 is
One hole 161 is provided at the upper end of 30, and this hole 161
A spring 162 is disposed between the inside and the pressurizing element 120, and a flange portion 166 is disposed at the middle portion of the 'r fc sliding + 1f11 body 130, and this flange portion 166 is connected to the fourth hole of the rocking body 110. 126 , the do face is regulated by the locking part 124 of the rocking body 110 , and the rocking body 110 is small.
Guide bin 1 erected on the outer surface of the lower end of the fifth hole 121 of
64 is a guide hole 1 bored in the upper surface of the flange portion 166
65, and the flange portion 166 and the sixth hole portion 1
A comb 166 is disposed between the outer surface of the lower end of the sliding body 130 and a contact 167 is disposed in series with the lower end of the sliding body 130.

To describe the operation of this contact head 100, when the contactor 137 is brought into contact with the surface of the master model and traced, the contactor 137 will move in response to the irregularities on the surface of the master model.
A force in a three-dimensional direction is applied to 7. First, in the vertical direction, the upper part of the sliding body 130 on which the contactor 167 is disposed is supported by the slide bearing 122, so it moves in the vertical direction, and when the sliding body 130 moves in the vertical direction, it presses the spring 162. However, when this spring 162 is compressed and leaks, the load cell 119 is
is pressed, and an updraft proportional to this pressing force is generated.

Further, the contactor 167 swings i1.
Then, the sliding body 110 swings about the spherical part 111 as a fulcrum,
When the oscillator 110 is photographed, the suppressors 116 and 117 press the load cells 1[)4 and 105 in each direction, so
An amount of electricity proportional to this amount of suppression is generated.

Next, load cell 104. ．． Describing the generation of torque that assists the movement of the three-dimensional cutting machine in each direction using the amount of electricity generated at 105 and 119, first of all, regarding the front-rear direction of the movable base 10, the drive motor 16 is disposed on the side of the movable base 10. A gear 14 is fixed to the output shaft of this drive motor 16, a gear 16 is fixed to the upper part of the rotating shaft 15 meshing with this gear 14, and a gear 17 is fixed to the lower part of the rotating shaft 15. This gear 17 meshes with the rack 4 of the fixed base 1 and drives the movable base 1U with the torque of the drive motor 16. The torque of this drive motor 16 is controlled by the amount of electricity from a load cell 105 that is proportional to the amount of deflection in the front-back direction of the contactor 167 of the contact head 100, and the torque is set smaller than the force for moving the moving base 10. The movement of the moving base 10 is carried out by the contact head ioo.
'lIt is moved by the force of the operator.

Next, regarding the movement of the head main body 60 in the vertical direction, a motor 29 is connected to the spool rocket 26 around which the chain 22 is wound, and the torque of the motor 29 is applied in the vertical direction of the contact 167 of the contact head 100. The torque is set to be smaller than the force that moves the head body 60 (-, the head body 60 is controlled by the force of the operator who operates the contact head 100). Moving.

Next, regarding the horizontal movement of the contact arm 50 and the cutting arm 40, a motor 57 disposed on the back side of the head body 60 has a friction roller 58 on its output shaft.
This friction roller 58 drives the upper surface of the cutting arm 40 and applies torque to easily move the cutting arm 40 and the contact arm 50 in the horizontal direction. The torque of this motor 57 is proportional to the horizontal deflection of the contactor 167 of the contact head 100.
, f 1liil 1ill i and also the torque -
1 Set smaller than the force for moving the cutting arm 40 and the contact arm 50 [7, the movement is performed by the force of the operator operating the contactless head 1oo-6.

Since this invention is constructed as claimed in the claims based on the embodiments described above, three-dimensional cutting (in which the operator traces the contact head along the surface of the master model with a slight force) is possible. By doing so, it became possible to create a disappearing model.

[Brief explanation of drawings]

Fig. 1 is a normal view of the three-dimensional cutting machine, Fig. 2 is a side view of the three-dimensional cutting machine, Fig. 6 is a side view of the moving mechanism of the moving base, and Fig. 4 is a plan view of the contact arm and cutting arm. , FIG. 5 shows a front view of the contact arm and cutting arm, and FIG. 6 shows a longitudinal sectional view of the contact head. 100 ~ contact head 110 ~ rocking body 104.1tJ5, 119 ~ load cell 130 ~ sliding body 167 ~ contactor

Claims (1)

[Claims] In a three-dimensional cutting machine, there is a oscillator whose upper end is arranged to be swingable at the bottom of the tip of the contact arm, and a oscillator arranged slidably at the bottom of this oscillator, and one at the end of the V-shaped thread. Arrangement of feelers 1. a sliding body, a drowsiness sensor that senses the amount of sliding electric IJ of the sliding body, and a drowsiness sensor that detects the left and right shaking fists of the oscillating body; A three-dimensional cutting machine, which generates a torque proportional to the amount of shaking and sliding, and uses this torque to make the movement of the -C contactor in the original direction easier.