JPS5943302A - Touch probe apparatus - Google Patents

Abstract

PURPOSE:To surely detect contact of a measuring probe by an apparatus wherein an in-contact signal attendant on displacement of the measuring probe is detected based on the changes in a light signal between a fixed probe and an exchange probe. CONSTITUTION:A light emitted from a light source 24 of a fixed probe 12 hits on a reflection plate 30 through an optical fiber 28, a gap 36 and a projector head 32. When a measuring probe 16 is in a neutral position, the reflected light enters into a photo converter 26 through a photo receiving head 34, gap 36 and an optical fiber 28. Thus, by detecting an output of the photo converter, it is determined that the measuring probe 16 is now in a neutral position. On the other hand, when the measuring probe 16 contacts with an object to be measured 14, the reflection plate 30 is displaced and the reflection light will not enter into the photo receiving head so that the photo converter 26 issues no output. As a result, contact between the measuring probe 16 and the object to be measured 14 can be detected surely.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a touch probe device, particularly a touch probe device mounted on a tool head of a three-dimensional measuring machine or a machine tool, for determining the shape, dimensions, etc. of an object to be measured. It is something.

6111 is a well-known three-dimensional measuring machine that measures the size and shape of an object placed on a base. A touch no log device is attached to a movable platform capable of moving in the direction of i!l ID.

In addition, recent machine tools - RAD's T1, installation V' and tap blow 7 device installation and removal '1 installation L7, jJn
1. After completing the pressurization, it is necessary to determine the dimensions of the 14 objects to be applied, etc. 1.The force of the single item 11.
1. , jtlJ, or one is widely practiced.

nil tan-ar probe area f sentence ('', neutral 1jX
l? '＋璽・(~1"i served (Ill established), and this (llllI foot completed) is a divergence rule ^mej + of course: Displaced by adding bird oil. comes out, IJ is done and 1ll
ll constant (the positive measurement action of the point is ri).

However, the following of this weight) 1. a) Touch τ1
- ノ"Device e and device i'j are all integrated (te)t<7
Iti, Are C, so the replacement has become larger, and this M.
1;'I 1'17i71ζ field jlljr, I, state, [earth J that also serves as a head (there was a drawback that the work of removing the head from the head was troublesome.71'4 k'l) (Integrated type, l-; Formed for both l&r measurement head II
Taichi 1f'"OmiMakoto's earthy odor - 11 when attached to Tsudo"
, the tap blow 7 device 1q is extremely larger than the utensil.
;1. ! Not only is it troublesome to attach and detach the 7°L, but the position between the tap-globe device and the tool head is also difficult.
Since the relationship is constant and must be mounted at 17, the tool head field zh tXIX & τ7 people'; O (-There is a drawback that it is difficult to put on and take off the touch glove device immediately @ 1 t)
Ta. i.e. conventional touch gloves % Ft 1171
ir, 1, the external cable for the human blade is connected, and it is difficult to store it in a sergy box etc. because of ζ-. It is necessary to have a configuration that can be adapted to the deterioration of the pond in 11 months, and due to these constraints, it is necessary to make the probe device an automatic detachable type. The drawback was that it was difficult to form.

In order to eliminate these above-mentioned drawbacks, tap probe position i 1 fixed block body and father)
Figure 1 "Improved Hari Insertion" is proposed.
+ Fixed probe fixed to the fixed head io (, 12, fixed probe 11 - facing the measuring head 12 (7)
Replacement Zorog body I having a lever 16 which is attached to the attachment/detachment port r← and is displaced by contact with the object to be measured 14
8 and Karamimi, both groups r]-B body [i between 2 and 18
[1, Due to magnetic coupling, the detection output of 1111 constantor t6 is It
(Small meal) 5 Ru.

That is, the coils 20 and 22 are installed at the opposing part between the fixed globe body I2 and the replacement globe body 18.
iJ: f
A switch device is provided which operates off based on 1 to 'LK of the ill constant 16, and the phase U of the coil 20 and the coil 22 is turned off based on the switch device's OFF operation when the probe 16 comes into contact with the object to be measured I4. The change in inductance is output as a touch signal, and by detecting this touch signal, the contact between the previous n14 measurement object 16 and the +117 measurement object 14 is detected.

However, in this improved device, the probe 1
When G touches the object to be measured 14, the coil 20.
In order to detect based on the phase q and intance changes induced by 22V, it is necessary to have an extremely complex circuit configuration including a detection circuit t, an oscillator, etc., which makes the device complicated and expensive. It had the disadvantage of being large.

The present invention is described in this book, which was created in view of the conventional methods, and its purpose is to provide a simple device↑1/? We provide a complete touch glove system that consists of a touch glove and can reliably detect the contact metal of the probe.

In order to achieve the above objective '5C, the present invention tJ, 1ll
The fixed probe body fixed on the fixed head and 17i1
Can be freely attached to and detached from the measuring head facing the constant globe body.
Fill that is disposed on JA and is displaced due to contact with the object to be measured
and a replacement glove body having a "ii'-child,"
Contact f between the probe and the object to be measured by detecting the displacement of the probe:
Detection - In a tag glove device, a fixed glove body includes a 1'',)'[, source, and 2),)'', a converter, a light source and a converter for converting an optical signal into an electrical signal.
TiT, a transducer and a pre-probe body 9f, an exchange probe (which optically connects the predetermined parts of the i-bu body) and a fiber body are provided, and the exchange probe body iC+ can be displaced by thousands. Interlocking reflection 41
, ile, i, is supplied through the optical fiber body to the head, t+ 't' (: to the reflector) and the head, and ξ! Reflection from A1 plate) ゛(Receives - of fixed globe body)'e Yl (Reflects to converter) Y.

A receiver (C, head C) for supplying the probe is provided, and the displacement of the probe is detected based on the change in the optical signal transmitted and received between the fixed globe body and the replacement globe body, and the probe is converted into a fixed probe body. The glove body is configured as a separate body, and the transmitting and receiving bodies are arranged face-to-face in 7. ``1'' - To do f: Characteristic.

, μF illustration no. Next, a description of suitable embodiments of the present invention will be given.

I will clarify.

Figure 2 (1) of the Tatsuji blog device according to the present invention.
1 is shown, and the same members as the conventional device are marked with V, and the description thereof will be omitted.

Characteristic features of the present invention
γ, Zunawara Met signal detection all times 1 probe body t2
Intersect with 41 power glove body! C4 received between 8) Y;
This is done based on the change in confidence, and the 7 fixed prongs 12 and the replacement glove body +8 are separately provided.
'l formation; ~ Senryo's :) 1'; Transmitting and receiving surface placed in x'1 direction 6
That's what happened.

In this embodiment, as shown in FIG. 2, it is attached to the fixed glove body I2.
The light source z4, the photoelectric converter 26, and the replacement globe body 18 are fixedly arranged on the holding frame, for example, at 1';11 of the fixed probe body 12. Optical fiber bodies 28 are fixedly disposed on the holding frame of the fixed probe body 12 for optically connecting predetermined portions to be described later.

On the other hand, the replacement probe body t8, which is disposed opposite to the fixed probe body 12 with a predetermined gap, has a displacement K of the probe 16.
A reflection plate 30 that moves A, and a V bell in the non-implementation mode 11 are provided at the center 81 of one side of the fixed element 1G, and this reflection plate 30-'! l!
Perform IK displacement. Dry and cross-twist the probe to 8) J[
Further, the reflection plate 30 detects) C) Y, and throws )'
A light receiving head 34 for receiving reflected light from the reflecting plate 30 is provided. 111
1. In this embodiment, the light emitting head 32 and the light receiving head 34 receive the detection light from the Y5 source 24 (which is formed from the original fiber body for the head, and from the base surface t of the light emitting head 320 to the fixed probe body 12). Force to transmit:) - Disposed opposite to the end surface of the fiber body 28, - Force receiving) °L head node 4
The base direction of the fixed globe body 12 is arranged 11 times from the end surface of the body 28.

The detection light from the source 24 is incident on the fiber body 28, the spacer section 36, and is further projected into the head 32. KE L) Y, is radiated to the anti-Musaka 30 11Z). At this time, C16 enters J7 and C16 enters.
/l' (received) by the head 34), and this light is reflected 9' (and then γ() is incident on the fiber body 28 through the gap 36.Then, this light] (reflection that did not propagate)
Stomach,) 11m1? ! By detecting the output of Y::÷26, the neutral position of the probe 16:jp 7'j
Q'(r can be detected.

This ((benefit 1iil Ako 16 touches the proboscis 14 to be measured, 1, 1, 4111 constantor 16, f\x, e reflection plate, (0 is the change of measuring head 16)'1 ', V
In order to do this series i・11, the light is projected from the 1-32 to the 1-reduction plate 30;

ga) ゛(-to, tsu ゛34 to die this ta〃) s)
0・＼Reflection on the throat) “C1 is receiving L” “!”,
As a result, the output of 1 (I, express message [¥) is not detected from the output of the 6 Nomushi,
In other words, it is possible to detect a touch signal 2).

In this embodiment, IJ receives the presence or absence of displacement of the probe 16 as described above) (- spatula, 1, reflection to 34)' (presence or absence of 2, i.e. -)'t, The output 1 from the eye 1 device 26 (it can be detected by the presence or absence of the eye 1-1) is 1 yen.

Said: Y(: m, * Output TNT from 4-focus 526
, z, faith rykJ, (it is understood that the detection circuit 38 detects a single gold, but a differentiation circuit is installed in this detection circuit)
'(: TIT, %>('!÷): To differentiate the output from ÷26 (from ·ζ, further ji'
It is possible to detect the displacement of the measuring head 10 with a high sensitivity.

In addition, tree nuts Jf' and 11 examples "Tl: z 1M'
, l note)'(', ;' to -J-f('h2 +'
consists of a group of optical fibers, and it is possible to divide the area by 1 - as shown in Figure 3 on the 1':14 section of the Noah-Iba body 28. , this one end))'(:) - The end surface of the driver body 28 and the above-mentioned 1 parent and receiver), facing the throat: 42.340 surface i1
Shini”, ・Keru +1? ! -, t' There is some misalignment -
7)"(', m,'
fi-'l'j
'! (Ij River) When the il head 10K 1st generation size is reduced (
It becomes possible to compensate for the slight deviation of fNt with respect to the old glove 12 within a predetermined amount range, making it extremely easy to attach and detach the replacement glove body 18.

In addition, in case of non-implementation 11, it is also possible to separate the fixed globe body into multiple parts, and divide the fixed globe body into two pieces for 1 day or more, and then place the holding frame on one side with light. The other holding frame that houses the fiber body contains a light source and a light source.
! ')', l−'-alternative zg, and these)v;
By arranging the fiber body, the photoelectric converter, and the photoelectric converter to face each other, it is possible to transmit and receive light.
'TT4. WJ's ability is to diversify the design by attaching a holding frame containing a pond, etc., to a location other than the measurement head, and it is a small 1st floor.

It is possible to facilitate maintenance work such as replacing the pond, or to perform inspections.

FIG. 4 shows a schematic diagram of another embodiment of the touch probe device according to the present invention. L, ni I': t/j bar in the same month as the conventional flute and the device shown in Fig. 2 - No reference numeral is given and the explanation thereof will be omitted.

Instead of providing the fiber body 2B with a separate outgoing path for the detection light from the light source and a return path for the reflected light from the light receiving head as in the device shown in FIG. The return path for transmitting the reflected light from the head node 2 to the optical converter 26 is formed by a common fiber body 28.

Therefore, in the apparatuses shown in FIGS. 1 and 4, a beam splitter 40 is installed near the front of the optical fiber body 28 in order to split the outgoing light and the incoming light, so that the detected light from the light source 24 is directly transmitted to the photoelectric converter. 26 is incident on '1. In addition, the structure is such that all of the reflected light from the light receiving head 34 is received by the converter 26 without leaking toward the light source. Therefore, similarly to the device shown in FIG. 2, it is possible to detect the displacement of the probe 16 based on the presence or absence of the output of the optical ffl converter 26.

As explained above, according to the present invention, a touch signal based on the contact of a probe to a measured object is detected based on a change in an optical signal transmitted and received between one fixed glow body and a replacement probe body. In other words, 7.1. Consists of a configuration that detects based on /'
r-k'), this light 71'j change 4&"! Tanu's test to detect the output force 1 signal from the device ((The circuit borrowed is extremely simplified, this 7';,, , v, ] It is possible to increase the complexity of the entire device η, and it is possible to reliably detect the contact of the contact point with the object to be measured using an extremely simple small ring device. be.

(i'f)
-f:! 1v3, Answer 1・To detect based on the change knowledge of
'1・ni-! We can provide superior equipment.

Furthermore, since the device of the present invention (the fixed probe body and the replacement probe body I- are separated), it is necessary to install one part of the wiring 4A, Ti1, etc. to one fixed glow body. By arranging it in the middle, it is possible to form a small exchange probe body with detachable 1111, which makes handling and attachment/detachment of the 7 exchange probes easier. e when attached to the tool head of a machine tool.
” 2 King 71 installation part requires one tool and replacement probe body without requiring special construction or modification (t, li-replacement i14:
can be obtained.

Furthermore, according to the present invention, since the distance between the opposing end faces of one fixed glow body and the replacement probe body can be arbitrarily set, automatic attachment and detachment of the replacement glove body can be easily achieved.

[Brief explanation of drawings]

Fig. 1 is a schematic configuration diagram showing a conventional touch glove device, Fig. 2 is a schematic diagram showing a schematic configuration of a touch glove device according to the present invention, and Fig. 3 is an optical fiber diagram in the device shown in Fig. 2. FIG. 4 is a bottom view showing the proximal end of the body, and FIG. 4 is a schematic diagram showing another embodiment of the touch glove device according to the present invention. 10--Measuring head, 12--Fixing Glove body, 14... Object to be measured, 16... Measuring point, 18... Replacement glove body, 24... Light source, 26... Photoelectric converter, 28...) C: 77171 pieces, 30...Reflector, 32...Throwing) Y, head, 34...Receiving) Y knee rad. Representative Patent Attorney Yoshi 11 Ken - (FG, or 1 person)

Claims (1)

[Claims] (1) An exchangeable glove body that has a rigid bib rope body fixed to the measuring head and a measuring tip that is detachably attached to the measurement tool 1' facing the fixed probe body and is displaced by contact with the object to be measured. In a touch probe device that detects the displacement of the probe and detects the contact between the probe and the object to be measured, , a photoelectric converter that converts the energy into
A light source, a light weight, a conversion k (to optically connect the exchange probe body with a predetermined portion of the exchange probe body), and a fiber body are provided, and the exchange globe body is provided with a displacement of 1'' and a displacement of measurement a. 11 reflector and 1-・1 constant globe body)
Detection that the fiber body was supplied from 0 to 4) Y;
Light is emitted onto the reflector) (receives the light reflected from the head and the reflector) Y;, then the fixed graph r1- is reflected to the converter) Y:, A receiving head is provided to transmit the signal f, and the change in the optical signal transmitted and received between the fixed probe body and the exchangeable probe body is -4; =5.
1. In 7-1 +6) Know and replace the fixed probe body - Configure the probe book separately and make both ') Y4
The sending and receiving surfaces are placed opposite each other! A touch probe device a0 (2) characterized by
), the original fiber body consists of a group of optical fibers at least at the ends facing both the light emitting and light receiving heads, and the fixed globe body and the replacement globe body are connected to each other. A touch glove device characterized by allowing relative positional deviation within a predetermined range.