JPS6049203A - Contact detector - Google Patents

Abstract

PURPOSE:To perform high-precision detection by providing a fixed part, the 1st movable member supported with the 1st parallel springs fixed at one terminal on the fixed part, and the 1st electric contact between the fixed part and the 1st movable member. CONSTITUTION:A contact detector has the fixed part 1, which forms the external cylinder of the contact detector. Then, the 1st movable member 2 is supported on the fixed part 1 with the 1st parallel springs 3 and 4. Further, the 2nd movable members 5 are supported with the 2nd parallel springs 6 and 7 provided to said 1st movable member 2 in parallel to the 1st parallel springs 3 and 4. This 2nd movable member 5 holds the contactor 9 having a contacting ball 8 atop. Thus, the high-precision contact detection is performed.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a contact detection device, generally referred to as a touch probe, that electrically detects the contact of a contact with an object in an NG machine tool and a three-dimensional coordinate system of 3111. . This contact detection TV has the ability to sensitively detect contact, move back in response to contact when it hits an object, and accurately return to its original position when removed from the object. It is necessary to return to normal operation, and a small and easy-to-operate device is desired.

In the past, many contact detection systems have been announced for this purpose. For example, Special Publication No. 54-6218 [Multidimensional Electronic Processor J]
The contact detector shown in Figure 2 uses a special mechanism to determine the return position.
Because of the V-structure, the device had a motor that could not be used by people, and it had drawbacks such as being expensive and cumbersome to operate.

The present invention has a simple structure, /+ S-type deafness, and a very accurate return position t+ U) F, high f-
It is suitable for his current situation.

Fig. 1 shows an embodiment of the invention, in which 1 is a fixed part forming the outer cylinder etc. of the contactor outlet, and 2 (first parallel springs 3.4 are attached to the fixed part 1 of every Z). Supported by the second parallel spring 6.7 provided in the moving member 2 in parallel with the first parallel spring 3.4. 0 is a second movable J member, and the second movable part 45 holds a sliding contact 9 having a contact ball 8 at the tip. The contact piece 12 is insulated and provided on the second movable member 2, and the contact ball 13 is provided on the movable member 2.
16 is a first electrical contact formed between a contact ball 17 provided on the first movable member 2 and the second i-th
jJ moving member 5 is insulated and provided with an insulating material 18;
This is a second electrical contact formed between the contact pin 19 and the contact pin 19. It is preferable that the first electrical contact 1o and the second electrical contact 16 are provided at positions 1800 degrees opposite to the axis of the contactor 9, but the present invention is not limited thereto; - The first position is sufficient if it operates against a force in the incoming direction.

14 refers to the first uJ moving part 2 and the contact piece 1 of the palace identification part 1.
2, that is, the first electrical contact; and 20 is a first biasing means such as a tension spring mounted so as to bias the second MJ moving member 5 in the 0 or close direction. ] A second biasing means such as a tension spring attached to bias the contact ball 17 of the UF moving member 2 in the direction of the contact ball 17, that is, the second electric contact 16 in the closing direction.
When no external force is applied to the soil contact ball 8 in the ÷X direction or the -in direction, it contacts the contact piece 12. l
, 1.35, the contact piece 19 and the contact ball 17 are in contact with each other, so that the contact 9 maintains a constant position relative to the fixed part 1, that is, the original position, as shown in the figure. 15.21 was connected at one end to the contact piece 12 and the contact piece 19, respectively! The other end of Soso 1 is connected to a power source (not shown) λ1, so: 2-Door 15, contact piece 12, Mf! 2i4'N 73,
First movable member 2, f'g contact 17, contact piece 19, -1-1
・A series circuit consisting of 21 is formed.

In addition, the first possible A) member 2 is fixed part; i) 'Fr,
Also, the second movable member 5 is biased 1 in the direction of the movable part key 2.
As the filtering means, the sea urchin tension spring 14.2 in Example 7 above is used.
It may be possible to do it by special Murakami means as in 0, or as another method, the 111m member 2 and the 2nd Ei]
The moving part 45 can be supported by the first parallel spring 3.4 and the second parallel spring 6.7, which can also serve as the first biasing means and the second biasing means. That is, as shown in FIG. 2 with only one parallel spring as an example, a parallel spring 3 is installed obliquely between the fixed part 1 and the movable member 2 (not shown by the solid line), and then shown by the dotted line 3'. By forcibly biasing the parallel spring as shown in FIG. be able to.

In such a structure, the right side of the contact 1 8 is now in contact with the object to be measured (not shown), and when the contact JJ: 8 moves in the -X direction, the second movable part 5 applies the second bias. It moves in the -X direction by 1 level against the biasing force of the stage 20. At this time, the 1st T
'i] The moving member 2 has its contact 1. Since the contact piece 13 is restricted to the contact piece 2, the contact piece 19 and the contact ball 17 are roughly aligned, and electrical continuity is interrupted at the point t. .

In other words, the second electric contact 16 is cut off at the moment when the contact ball 8 comes into contact with the mouse figurine and is displaced, which is detected by an appropriate detection device.By this, the position of the mouse object can be accurately detected. I can do something. Next, when the contact between the contact ball 8 and the object to be measured is released, the second movable member 5 comes into contact with either the contact piece 19 or the contact ball 17 and moves in the +X direction by the action of the second biasing means 20. The contact ball 8 moves in parallel and returns to its original position.

Next, the left side of the contact ball 8 contacts the target object 1, and the contact ball 8 becomes +
The displacement in the X direction, the first movable part ηa2, and the second movable member 5
While maintaining the state shown in the figure, hold two ((cutting length: 1 large)) on the contact piece 19 and the contact piece 17. ; Kuno (-), : Nigni and move the flat wire in the 10-in direction, and the contact piece ', 2 and row n work, ・15 4 at the same time, the electricity of the first electrical contact lO [1' no. 〕1〕 is i, 'r hi J + Sasu 1 As in the previous case, 1; j
Be able to check the constant weight of a figurine very well.

Next, contact I7 and contact 8 with the object to be worn are released.2
By the action of the biasing force 7 and 14, the contact ball 8 moves in parallel in the input direction until the first movable member 2 comes into contact with the contact piece 12, and the contact ball 8 returns to its original position. do.

FIG. 3 shows another embodiment of the contact detection device of the present invention, which is practically constructed in a conobact. That is, 1 is a fixed part forming an outer cylinder of the contact detection device, and inside this, the 11th IC/1 part 2 is supported by first parallel springs 3 and 4. The first movable member 2 has a 21+ movable member 5 supported by second parallel springs 6 and 7; 1 electrical contact 10
However, in addition to the structure of the 1st!1J (such as the fact that a second electrical contact point 6 is provided in the circle between the J member 2 and the second flexible member 5), its I'1 river effect is also similar to that shown in Fig. 1. This is the case of the example shown in iiJ.

As described in detail above, the contact detection device of the present invention has a simpler structure than the conventional one, can detect the contact of the contact width to the object to be measured and return to the original position, and can support the movable member. Since the mechanism is a parallel spring, there is no rattling or friction of the fulcrum like a rotating fulcrum, and high precision contact detection and return to origin are possible, as well as the displacement of the movable member and contact. is always the same amount regardless of the length of the contact, so even if the length of the contact is freely selected, high precision
'.

11.

[Brief explanation of the drawing]

The first ward is the first heaven hi of the present invention = Ita'+ IT! <Gai"
Shiman;, A2 is the other attachment 'j f, Explanation of the stage X, 3rd
．． 74 Q) 2nd Example υ (Cross-cut 5. 1 Fixed part 2 10th moving part - A 3.4 1st parallel spring 5° 2nd i Kolshi 5. Sound) η i6.7.0
2nd A row spring 9th child The paddle 10: 1st electric point 14th 1st, 8th force, 75th 16th 2nd
Electrical connection, fortune-telling, 7chopo with 52 on 20 Patent applicant Tokyo Kenmitsu Co., Ltd.

Claims (1)

[Claims] a first movable part having one end fixed to the fixed part and supported by a first parallel spring; a first electrical contact provided between the fixed part and the first movable member; a first biasing means for biasing the j-th movable member in a direction to close the contact; and a second parallel spring having one end fixed in parallel to the first parallel spring to the 11i-J working part O.
And the arc contactor is held by the second movable part O and the first Tj,"
a second electric contact provided in a position opposite to the first electric torque point in relation to the second uJus member; and a second attachment that biases the second movable member in the direction to close the second electric contact. a contact detection device comprising a force means;