JPS6224104A - Non-contact 3-d measuring apparatus for outer profile of object - Google Patents

Abstract

PURPOSE:To obtain a object with the same shape as an object to be measured, by arranging a non-contact measuring device in the perimeter of the object being measured in such a manner as to be free to turn and lift to electrically record measured values at measuring points set at equally divided point of the circumference with a fixed upper and lower pitch. CONSTITUTION:After a sleeve 10 is lifted, a person 48 intended to take a breast image slits on a chair 4, the head thereof is adjusted right under a pad 36 and then, a lift rod 35 is fixed. Then, as the equipment starts, a rotary frame 28 also turns with the rotation of a motor 24 while the rotation of a motor 15 is transmitted to a screw shaft 14 through an output shaft 16a on both sides. With the turning of the screw 14, the sleeve 10 lowers along a strut 7 and a rail 11 fastened integral goes down bit by bit. Carriers 29 turning together with the rotation of the frame 28 also comes down with the lowering of the rail 11. Then, a non-contact measuring device 33 mounted to one carrier 29 starts to measure and electrically record the distance to the outer surface of the person 48 from the device 33 at measuring points as equally divided points of the circumference with fixed upper and lower pitches being set.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a three-dimensional measuring device for the outer surface of an object having a three-dimensionally complex shape that is difficult to measure by contact.

(Prior art) For example, it is difficult to measure the outer surface of a human body or animal, or the outer surface of an object with a three-dimensionally complex shape such as a soft rubber product, a thin plate product, or a thin wire product. Therefore, conventionally, the external shape has been restored mainly by hand and visual inspection.

(Problem to be solved by the invention) Therefore, for example, creating human body images has traditionally been done manually by specially skilled workers, which has poor production efficiency.
In addition, there was a problem in that it was easy to produce or fail the product.

(Means for Solving the Problems) In order to solve the above-mentioned problems, the present invention makes it possible to install the object to be measured on the center of the base frame, and uses a non-contact measuring device with a low height laser distance measurement. The object to be measured is arranged so as to be rotatable and movable up and down, and the measurement points are set at equally divided points on the circumference with a constant pitch above and below, and the measured values at each measurement point are electrically recorded. A non-contact three-dimensional measurement device for the outer surface of an object is constructed.

(Function) According to the device of the present invention configured as described above, all distances to a large number of measurement points distributed on the outer surface of the object to be measured are measured, and the measured values are electrically recorded. Therefore, by inputting this record directly into the machine tool, an object having the same shape as the object to be measured can be obtained.

Furthermore, by using the data processed by computer processing the marked records as necessary, enlarged or reduced objects can be easily obtained, so the apparatus of the present invention can easily produce molds and their cores. and can be made accurately. Therefore, especially when casting using high-quality materials, the wall thickness of each part can be made uniform and minimized, so that the maximum effect can be achieved.

(Embodiment) An embodiment of the present invention for manufacturing a bust of a human body will be described below with reference to the drawings.

In the figure, 1 is a base frame whose planar shape is rectangular as shown in FIG. 2, and 2 is a plurality of casters for movement provided on the lower surface of the base frame. 3 is a cover plate 1~ provided on the base frame 1 with an appropriate space, and 4+1 is a δΩ stomach placed on the center of this cover plate 3! 5 is a handle for horizontal movement, and 6 is a handle for vertical movement.

Branches 7 are installed at the front and rear of the base frame 1, and a beam 8 is spanned between the upper ends of these branches 7. Note that 9, not shown in FIG. 2, is a stay provided on one side of the support column 7. Reference numeral 1o denotes sleeves provided on the front and rear columns 7 so as to be able to rise and fall freely, and a ring-shaped rail 11 is fixed to the inside of these sleeves 10. 12 is a bracket protruding from one side of the sleeve 10, and 13 is this bracket 1-12.
It is a nut stuck to the. 14 is a screw shaft that is screwed into the oak 1-13, and this screw shaft 14 descends along the support column 7;
The lower end passes through the cover plate 3 and connects to the base frame 1.
is supported by. A motor 15 is equipped with a brake for raising and lowering the sleeve 10 by rotating the front and rear screw shafts 14, and this motor 15 is fixed to an index unit box installed on the base frame 1. 16a (an output shaft that protrudes from the front and rear of the index unit 16, and is connected to the horizontal shaft 18 via a coupling 17, respectively. 19 is the bearing of these horizontal shafts 18, 2° is the horizontal shaft 1
A bevel gear 21 is fixed to the lower end of the screw shaft 14 and meshes with the bevel gear 2°.

22 is rotatable via a bearing 23 provided on the beam 8!
r! A rotary sleeve 22 is mounted directly in the center of the ring-shaped rail 11. 24 is a variable speed motor with a brake for driving the rotating sleeve and is fixed to the beam 8. 25 is a pulley fixed to the output shaft of the motor 24, 26 is a pulley fixed to the rotary sleeve 22, and 27 is a timing bell l~ extended between these pulleys 25 and 26.

Reference numeral 28 denotes a bifurcated rotating frame which is movable in the axial direction relative to the rotating sleeve 22 and rotates together with the rotary sleeve 22, and 28a is a boss portion that fits into the rotating sleeve 22. 29 is a carrier provided at both leg ends of the rotating frame 28, and includes a guide roller 3o that rolls into contact with the upper surface of the ring-shaped rail 11, a guide roller 31 that rolls into contact with the lower surface of the rail 11, and a carrier that rolls with the inner peripheral surface of the rail 11. Contacting guide roller 3
2 are rotatably supported.

Reference numeral 33 is a non-contact measuring device such as a laser rangefinder mounted on one of the carriers 29. Measured values can be recorded electrically. 34 is a cover provided inside the rotating frame 28.

Reference numeral 35 denotes an elevating rod that is movable up and down inside the rotating sleeve 22, and a head fixing pad 3 is attached to the lower end of this rod 35.
G is provided. 37 is the lifting rod 3 on the bearing 23
The lifting rod 35 can be fixed and released by rotating a lever 38 using a clamper boss fitted to the clamper boss 5. 39 is an operating rod connected to the lever 38, and 4o is its guide. Also 41 (second
(see figure) is III? This is an ID control panel.

FIG. 3 shows an example of a numerically controlled machine tool for inputting data obtained by the device of the present invention to process a restored object. 42 is its base frame, and 43 is a machine that can be freely operated on the bed of this frame. 44 is an index unit installed on the slide table 43, 45 is a column installed on one side of the base frame 42, 46 is a cutting unit l- that moves up and down along this column 45, and 47 is a It's a cutter.

Next, the operation of the apparatus of the present invention constructed as described above will be explained.

With the sleeve 10 raised as shown in FIG.
A person 48 who is going to take a bust is made to sit on a chair 4. In this case, the lifting rod 35 is raised out of the way, and adjusted by the handle 5.6, if necessary, so that the head of the seated person 48 is located directly under the pad 36. Once the adjustment is complete, lower the lifting rod 35, place the pad 36 on your head, and then pull down the operating rod 39 to rotate the lever 38 in the direction of arrow A in Figure 1 to lower the clamper boss. 37 fixes the lifting rod 35.

If the control operation panel 41 is operated in this state to start this device, the motor 24 will rotate and the pulley 25. Timing belt 27. The rotating frame 28 rotates via the pulley 26° rotating sleeve 22.

On the other hand, since the motor 15 on the base frame 1 also rotates,
The rotation is transmitted to the output shafts 16a on both sides via the index unit 16, and further to the coupling 11. Horizontal axis 18. It is transmitted to the screw shaft 14 via the heavy wire 20.21. As the screw shaft 14 rotates, the nut 13. The sleeve 10 is inserted through the bracket 12 into the first
In order to descend along the branch 7 from the position shown in the figure, the ring-shaped rail 11, which is integrally fixed to the sleeve 10, gradually descends.

As mentioned above, when the rotating frame 28 rotates, the carrier 17-29 also rotates integrally, and this key A7-2 rotates.
Each guide roller 30, 31, 32 supported by the carrier 2 is in rolling contact with the ring-shaped rail 11.
9 rotates horizontally and gradually descends as the ring-shaped rail 11 descends.

Also, with the start of operation of this device, one of the carriers 29
Since the non-contact measuring device 33 equipped with VR has started operating, the human body 48, which is the object to be measured, is measured from the measuring device 33 at each measuring point, which is a circumference equally divided point with a constant pitch above and below. The distance to the outer surface is measured and the measured value is recorded electrically.

Then, by continuing the above-described actions, when the sleeve 10 and the rotating frame 28 reach the position shown by the two-dot chain line in FIG.
At the same time as stopping the operation, the descended member is returned to its original position without rising, and the measurement work is completed.

Next, in order to restore the image based on the data obtained as described above, the data recorded in the numerically controlled machine tool as shown in FIG. Set 49 and operate this machine. In this way, the month 49 rotates as shown by arrow B, and the cutter 47 moves forward and backward based on the input data while rotating as shown by arrow C.
By moving slightly from top to bottom in the direction of the arrow, the workpiece material 49 can be cut to create an image having the same shape as the human body 48.

In this case, by applying the measurement data to a computer and processing it, it is possible to obtain an enlarged or reduced image, so when making hollow casting products, the mold and core can be made accurately. be able to.

(Effects of the Invention) According to the device of the present invention configured as described above, all distances to a large number of measurement points distributed on the outer surface of the object to be measured are measured, and the measured values are electrically recorded. Therefore, by inputting this record directly into the machine tool, it is possible to easily produce 1q of objects having the same shape as the object to be measured. Therefore, it is possible to industrially accurately restore even three-dimensionally complex shapes without requiring special skills unlike in the past.

Furthermore, by using the data processed by computer processing the above-mentioned records as necessary, it is possible to easily obtain enlarged or reduced objects, so that molds and their cores can be easily and can be made accurately. Therefore, especially when casting using expensive materials, the wall thickness of each part can be made uniform and minimized, so that the maximum economic effect can be achieved.

[Brief explanation of the drawing]

Fig. 1 is an elevational view of the device of the present invention, Fig. 2 is a plan view thereof, and Fig. 3 is an elevational view of the restoration machine tool. 1... Base frame 4... Chair 7... Support,
8...Beam 10...Sleeve
11...Ring-shaped rail 15...Motor with brake 22...Rotating sleeve 24...Variable speed motor with brake 28...Rotating frame 29...Carrier 33
...Non-contact measuring device 35...Scaling rod 36...
·pad

Claims (1)

[Claims] 1. The object to be measured can be installed on the center of the base frame, and a non-contact measuring device such as a laser rangefinder is placed around the object to be measured so that it can rotate and move up and down. A non-contact three-dimensional measurement device for the outer surface of an object, characterized in that the measurement values at each measurement point are electrically recorded by setting the measurement points at equally divided points on the circumference at a constant pitch above and below.