JP3072986U - Workpiece seating confirmation device - Google Patents

Abstract

(57) [Summary] [Object] A work seating confirmation device for confirming whether or not a work is in close contact with a jig when processing various works with a processing jig to a predetermined accuracy. Even if there is surface roughness or distortion on the contact surface on the workpiece side, not only can the seating be confirmed with high accuracy irrespective of these, but also the seating can be confirmed with high precision even on workpieces of various materials and shapes. . [Constitution] A pin 101 having a work receiving surface on the top, an elastic material 104 attached in a belt shape in a circumferential direction of the pin 101,
A hole 106 for inserting the pin 101 is formed, and an air supply port 108 and an exhaust port 109 are formed in the seating surface 107 of the hole 106, respectively.
The pin 101 is vertically movably inserted into the hole 106 through the elastic material 104, and the pin 101 is placed on the workpiece receiving surface 103 by placing the workpiece on the workpiece receiving surface 103.
, The pin 101 sinks and the bottom 110 of the pin 101
When the pin 110 comes into contact with the seating surface 107 and the pressing of the pin 101 is stopped, the bottom surface 110 of the pin 101 separates from the seating surface 107 due to the restoring force or elasticity of the elastic material 104, and the space between the bottom surface 110 of the pin 101 and the seating surface 107 is formed. Is formed by forming a gap 111.

Description

[Detailed description of the invention]

[0001]

TECHNICAL FIELD OF THE INVENTION

 The present invention relates to a work seating confirmation device for checking whether or not a work is in close contact with a jig when processing various works to a predetermined accuracy using a processing jig. Even if there is surface roughness or distortion on the surface, not only can the seating be confirmed with high accuracy irrespective of these, but also the workpiece seating can be confirmed with high accuracy even for workpieces of various materials and shapes. Related to the device.

[0002]

[Prior art]

 In order to process a work to a predetermined accuracy, the work must be properly seated on a processing jig. This is particularly important in the case of an automatic processing machine and the like, and it is necessary to confirm that the seating is properly performed.

[0003] As a seating confirmation device, a device shown in Fig. 3 is conventionally known. In FIG. 3, reference numeral 1 denotes a seating confirmation unit, which is a work receiving surface 2 at an end, an air outlet 3 formed in the work receiving surface 2, and further communicates with the air outlet 3. It comprises an attachment 5 having an air supply port 4 opened in the vertical direction. Reference numeral 6 denotes a work, and 7 denotes a gap formed between the work 6 and the work receiving surface 2.

The seating confirmation unit 1 of FIG. 3 configured as described above introduces air from the air supply port 4 using, for example, the air supply system A shown in FIG. That is, in FIG. 1, when the air from the air supply source 9 is introduced into the air supply port 4 through the pressure reducing valve 10 and the fixed throttle 11, the air initially passes through the air ejection port 3 as shown in FIG. Is discharged from

[0005] As shown in FIG. 2, when the work 6 is pressed by the clamp 8, the air outlet 3 of the work receiving surface 2 in FIG. The fluctuation of the air pressure leaking from the gap between the work receiving surface 2 and the work 6 during this time is detected by the pressure sensor 12 in FIG. If the seating is perfect, there should be no air leakage from this gap and the pressure should rise to the seating pressure.

[0006]

[Problems to be solved by the invention]

 However, if the contact surface of the workpiece 6 has surface roughness or distortion, air leaks from the surface roughness or distortion point through the contact surface, and there is a gap even if seating is completely achieved. Will be judged. In addition, the above-mentioned apparatus reacts sensitively even when a minute gap exists, and therefore, can be applied only to a specific work.

As a measure to cope with such a problem, it is conceivable to make the work receiving surface 2 small. However, in this case, the surface pressure increases. It is also conceivable to increase the air flow rate by increasing the size of the air jet port 3. However, in this case, not only the surface pressure rises, but also the air consumption increases.

Therefore, the object of the present invention is not only to enable high-precision confirmation of seating regardless of surface roughness and distortion on the work side contact surface, but also to check the workability of various materials and shapes. An object of the present invention is to provide a work seating confirmation device which can confirm seating of a workpiece with high accuracy and improves the above-mentioned disadvantages of the known art.

[0009]

[Means for Solving the Problems]

 In order to achieve the above object, according to the present invention, a pin having a work receiving surface on the top, an elastic material adhered in a belt shape in a circumferential direction of the pin, and a hole for inserting the pin are formed. And a seating case through which an air supply port and an exhaust port are respectively penetrated on a seating surface of the hole, and the pin is inserted into the hole so as to be movable up and down through the elastic material. When the work is placed on the work receiving surface and the pin is pressed, the elastic material is crushed, the pin moves downward, the bottom surface of the pin comes into contact with the seating surface, and the pressing of the pin is stopped. The pin is moved upward by the restoring force of the elastic material, and the bottom surface of the pin is separated from the seating surface to form a gap between the bottom surface of the pin and the seating surface.

[0010]

[Embodiment of the invention]

 Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a cross-sectional view of a specific example of a work seating confirmation device according to the present invention, and FIG. 2 is an explanatory view showing a state where the work is pressed against a work receiving surface by a clamp. Is a sectional view of a conventional device.

As shown in FIG. 1, the device X of the present invention basically includes a pin 101 and a seating case 102.

The pin 101 has a work receiving surface 103 on the top, and a band-shaped elastic material 104 is attached in the circumferential direction of the pin 101. This attachment is performed, for example, by forming a groove 105 in the circumferential direction of the pin 101 as shown in FIG. 1 and inserting a ring-shaped elastic material 104 into the groove 105 and wrapping the groove. It can be attached by any method. As the elastic material 104, for example, a polyurethane resin or the like is used.

The seating case 102 is provided with a hole 106 for inserting a pin 101 in a vertical direction at a substantially central portion thereof. The seating surface 107 of the hole 106 has an air supply port 108 and an exhaust port 109, respectively. Are penetrated outward.

The pin 101 is inserted through the elastic material 104 into the hole 106 movably up and down. That is, the pin 101 enters the floating state via the elastic material 104. In this state, the work 6 is placed on the work receiving surface 103 and pressed by the clamp 8 as shown in FIG. At this time, the pin 101 is crushed by the elastic material 104 and sinks downward. As a result, the bottom surface 110 of the pin 101 comes into contact with the seating surface 107.

Next, when the clamp 8 is loosened and the pressing of the pin 101 is stopped, the pin 101 moves upward due to the restoring force of the elastic material 104, that is, the spring action, and the bottom surface 110 of the pin 101 separates from the seating surface 107. A gap 111 is formed between the bottom surface 110 of the pin 101 and the seating surface 107. The initial compression setting of the resilient material 104 is 0.5 mm, so that the pin 101 retains a 0.5 mm movable stroke due to the spring action of the resilient material 104.

As shown in FIG. 1, a groove 112 is engraved on an arbitrary peripheral surface of the pin 101, for example, a middle peripheral surface, and the bolt 113 is inserted into the groove 112 so that the tip 114 of the bolt 113 is located. Can be inserted laterally from the side surface of the seating case 102 to thereby serve as a stopper for preventing the pin 101 from coming out upward.

In use of the device of the present invention having the above-described configuration, first, a work 6 to be seated is placed on the work receiving surface 103 of the pin 101 as shown in FIG. 1, and then shown in FIG. The work 6 is pressed by the clamp 8 so that the work 6 can be moved.

At the same time, as shown in FIG. 1, air is supplied from an air supply source 9, for example, from an air cylinder, through a pressure reducing valve 10 and a fixed throttle 11, while measuring air pressure with a pressure sensor 12. To supply.

While the work 6 is not sufficiently pressed down by the clamp 8 in FIG. 2, there is a gap 111 between the seating surface 107 and the bottom surface 110, so that the air from the air supply port 108 removes the air from the gap 111. Through the exhaust port 109 to the outside.

Eventually, when the work 6 is sufficiently pressed down by the clamp 8 in FIG. 2, the elastic material 104 is crushed and the pin 101 moves downward. As a result, the bottom surface 110 is pressed against the seating surface 107 and The gap 111 disappears. Therefore, the air from the air supply port 108 is not discharged from the exhaust port 109, and the air pressure rises to the seating pressure. As a result, seating of the work 6 on the work receiving surface 103 is confirmed.

[0022]

[Effect of the invention]

 The above-described present invention has the following effects.

(1) Since the air pressure change between the bottom surface of the pin and the seating surface is detected without detecting the air pressure change at the contact portion between the work and the work receiving surface, the work side contact surface has surface roughness or Even if there is distortion, the seating can be confirmed with high accuracy regardless of these.

(2) Since the gap to be detected is a machined surface, it can be applied to works of various materials and shapes.

(3) The area of the work receiving surface can be freely selected, and the surface pressure on the work can be kept low.

(4) Settings such as air consumption and air pressure can be kept constant.

(5) Since the hole is not exposed, there is no hole clogging due to entry of dust or the like.

(6) When the workpiece is clamped and when it is not clamped, a clear difference in air pressure is generated by the pin floating mechanism, so that the clamp confirmation can be used also.

(7) Unlike the electric type, since it is an air pressure detection type, there is no need to route electric wires and the use range is not limited.

(8) Since the portion of the work receiving surface that is easily worn has a pin shape, it has conventionally been necessary to replace the entire attachment when it becomes worn, but only the pin may be replaced. Also, the cost of consumables is low and the replacement time is short. Note that the attachment has a different shape depending on the device and the work, but all pins may have the same shape.

(9) Foreign matter entering the moving part is sealed by an elastic material, and since the internal pressure is higher than the outside by the air pressure for confirming seating, a completely purged state is obtained, which causes a malfunction. But very few.

[Submission date] February 3, 2000 (200.2.3)

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] 0001

[Correction method] Change

[Correction contents]

[0001]

BACKGROUND OF devised]

 The present invention relates to a workpiece seating confirmation device for confirming whether or not a workpiece is in close contact with a jig when processing various workpieces to a predetermined accuracy using a processing jig. Even if there is surface roughness or distortion on the surface, not only can the seating be confirmed with high accuracy regardless of these, but also the workpiece can be confirmed with high accuracy even for workpieces of various materials and shapes. Related to the device.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of a specific example of a work seating confirmation device according to the present invention.

FIG. 2 is an explanatory diagram of a state where a work is pressed against a work receiving surface by a clamp.

FIG. 3 is a sectional view of a conventional device.

[Explanation of symbols]

 101 Pin 102 Seating case 103 Work receiving surface 104 Elastic material 106 Hole 107 Seat surface 108 Air supply port 109 Exhaust port 110 Bottom surface 111 Gap X

Claims (2)

[Utility model registration claims] 1. A pin having a work receiving surface on a top, an elastic material adhered in a belt shape in a circumferential direction of the pin, and a hole for inserting the pin, and a seating surface of the hole. A seat case through which an air supply port and an exhaust port are penetrated, wherein the pin is movably inserted up and down into the hole via the elastic material, and the work is placed on the work receiving surface. Then, when the pin is pressed, the elastic material is crushed, the pin moves downward and the bottom surface of the pin contacts the seating surface, and when the pressing of the pin is stopped, the pin is moved upward by the restoring force of the elastic material. A seating confirmation device for a work, wherein the bottom surface of the pin is moved away from the seating surface to form a gap between the bottom surface of the pin and the seating surface. 2. The apparatus according to claim 1, wherein the elastic material is a polyurethane resin material.