JPS62241675A - Forcep - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to tweezers for clamping articles.

[Conventional technology]

Conventional tweezers have a plate material selected according to the material and shape of the article to be clamped, as shown in the front view in Figure 1 (a) and its side view (b). A clamping member 1.2 processed into a complicated shape is prepared.

These clamping members 1 and 2 are made opposite to each other,
When the two are combined, the proximal end 3 is welded or riveted, as shown in FIG. In the figure, the clamping member 1.2 is processed so that it becomes uniformly thin toward the distal end 4, but although it is not actually shown, the proximal end 3 is thin, the middle is thick, and the distal end is thin. It has a complex shape in which 4 becomes thinner again, has just the right amount of elasticity to open and close when pressed with your fingers, and the tip has been very carefully designed to make it easy to hold items, and is further quenched. It is finished with heat treatment such as

[Problem that the invention seeks to solve]

In this way, since the tweezers are used to hold and hold objects, the quality of the tweezers immediately affects work efficiency. Therefore, in many cases, the finishing work is done manually by skilled workers, which results in poor work efficiency.Moreover, due to the shape, material, and clamping pressure of the product, products with complex shapes based on computer output designs are manufactured in large quantities. The reality is that this is not possible. In addition, because finishing work must be performed after rough machining from the plate material and heat treatment such as hardening, there is a natural limit to finishing the areas where hardness has increased due to hardening. It is difficult to provide hardness or to form by joining different materials.

In addition, the distal ends 4 of the pair of welded clamping members are often misaligned, and it is a labor-intensive task to make them always match. The proximal end 3 where the pair of clamping members 1 and 2 are welded has a narrow wedge-shaped space, so dirt can easily accumulate there and it is difficult to clean, so a pin hit that handles items that do not want to be contaminated with impurities is created. This was extremely difficult.

The present invention provides a tweezers that eliminates the above-mentioned drawbacks and can produce a large number of vin ceramics and the like in a single stroke and at the same time.

[Means for solving problems]

The present invention uses wire-cut electric discharge machining to make tweezers, and forms gripping parts of any shape and thickness connected to a common base end from a single base material in a continuous stroke-like manner. It was designed to do so. The shape of the gripping part is rounded with no narrow wedge-shaped gap at the base end,
The pair of clamping parts have the same shape and are formed symmetrically, and one clamping part is made thick so that it does not move, and only the other clamping part is made thin so that it is movable and can hold the article. Alternatively, the left and right sides can have different shapes depending on the size of the fingers of the hand. On the other hand, the base material can be heat-treated in advance, and the tip that will hold the object can be made of Hastelloy (trade name), a heat-resistant and corrosion-resistant alloy mainly made of nickel, HSS, or WC.
, r+ 1Re , AnoTiV, Fe Cr Co ,
Alternatively, a plurality of tweezers can be successively formed from each alloy such as l''eNiCr, or a base material in which each of these alloys is bonded.In forming the tweezers, first, the side portions having a common shape are formed. The machining in the X direction is performed collectively by wire-cut electric discharge machining, and then the Y direction of the clamping portion is machined and formed for each tweezers according to their respective shapes to separate them.

At that time, a portion may be connected and then separated at the end, or may be separated at the time of use and used as tweezers.

However, items that can be formed using this processing method are not limited to tweezers, but also include eating utensils such as pliers, scissors, chucks, and forks, medical utensils, and the like.

[Effect]

Since it is processed and formed in a single stroke from a heat-treated base material or a base material that is a combination of different materials, the shape of the pair of gripping parts can be processed and formed to match exactly.
It is possible to make defective products such as when the proximal ends of a pair of clamping parts, which were formed separately by pressing, forging, or a contour machine, are welded together as in the past, where the distal ends are misaligned and do not match. Moreover, the tweezers of the present invention can be provided with a combination of different materials at the tip, and the shape of the base end can be rounded by eliminating the wedge-shaped gap that is created when conventionally welded. Since this part can be completely cleaned and disinfected, it is extremely advantageous for medical instruments that must not be contaminated, and can also be used for tableware such as forks.

Furthermore, when making pliers, scissors, chucks, etc., there is no need to bend a pair of clamping parts and assemble them as in the past, but instead the wire-cut electrical discharge machining is performed on base materials after heat treatment. We are now able to produce highly accurate products.

C Embodiment] The present invention will be described based on figures illustrating the present invention. Figure 2 (d
), the side surface 1.2 of the clamping part is machined in the X direction from the base material 5 indicated by the chain line in a single stroke using a wire-cut electrical discharge machine. At this time, it is also possible to provide a hollow central portion 6 to make the tweezers lighter and have appropriate elasticity. Next, as shown in the same figure (C), the proximal end 3 has a rounded radius to facilitate disinfection and cleaning, and the distal end 4 has a space 7 formed thickly so as not to bend. Y with cut electric discharge machine
Process the direction. To perform this processing, prepare a large base material 5 within the length range in which the wire electrode 21 can be set, as shown in Fig. 5, and process the base material 5 in the X direction using a plurality of tweezers. It is extremely efficient to process the Y-direction by forming each piece individually. At that time, the 6th
As shown in the figure, the tweezers can be easily organized and stored if they are connected at the connecting part 8 and then separated at the end or broken off when used.

As shown in FIG. 5, the base material 5 is made of other materials such as Hastelloy, HSS, Wc, Ti, Re, AJTi V, Fe.
When using a combination of different materials 9 such as Cr Co , Fe Ni Cr , etc.
As shown in (r), a tweezers having the tip portion 4 made of a material 9 different from that of the clamping portion 1.2 is produced.

The tip portion 4 can also be made of a permanent magnet material or a magnetic material and then magnetized.

In the example shown in Fig. 4, the clamping part 1 is made thick so as to have rigidity so that it does not move, and only the clamping part 2 is thinly combed and has elasticity so that it can move. Place the tip of No. 1 on the item to prevent it from moving,
It can be held by moving the tip of the holding part 2. Furthermore, the gripping parts 1 and 2 can be formed into different shapes depending on the size of the fingers of the hand. In the clamping tool shown in FIG. 7, the handle 10 and the handle 11 are processed and formed separately, and the bottle 12 is caulked so that it can be opened and closed.
a notch 15 is provided so that the rings 16. and 16.
Pattern 10 so that 11 matches. The curved structure (not shown) is formed by pre-treating the base material 1 and then using wire-cut electric discharge machining or die-sinking electric discharge machining, so it can be finished with extremely high precision. . The tableware 18 shown in FIG. 8 can be formed into any shape by rounding the grooved base 20 of the fork 19 from a single base material, and when processing in the Y direction, The diameter of the wire electrode 21, for example 0.2111
If this is the case, it is possible to produce the parts in close contact with each other at intervals of about 0.21 to 0.31, including the processing expansion allowance.

〔Effect of the invention〕

According to the present invention, the tweezers are made of one base material, or one base material made of a combination of different materials, which has been subjected to heat treatment, etc., and then processed and formed into a brush-like shape. The rounded shape allows for perfect cleaning and disinfection, and unlike welded parts, the gripping part can be processed and formed to fit perfectly. Moreover, since the clamping surface has a pear-finished surface due to electrical discharge, there is no need to provide uneven lines like in conventional tweezers, and even if the gripping surface has a shape that does not allow uneven lines to be provided. It is possible to hold an object without it slipping. Not limited to such tweezers or tweezers, pliers, scissors,
For products such as chucks and forks, the base material is any high-hardness material, corrosion-resistant material, or vibration-resistant material.
100 with extremely high precision, and can perform continuous forming at intervals equal to the distance between the wire electrodes plus the machining expansion allowance. Since no mold is required, it can be manufactured at low cost.

It should be noted that, in the processing and forming in the present invention, it is preferable that as many of the processing and forming parts as possible be performed by wire-cut electrical discharge machining, and if necessary, by electrical discharge machining using a ram-type electrical discharge machine. Cornering and polishing of the outer periphery can be done by various machining, electrolytic machining, or chemical machining, and the clamping surface of the tip part 4 can be wire-cut into a line, a knife, or an edge shape depending on the purpose of use. It goes without saying that finishing polishing may be performed by various means other than machining.

[Brief explanation of drawings]

Figure 1 is a diagram of conventional tweezers, Figure 2 (a) and (b)
, Fig. 3(C)(d), Fig. 4((1)(h)) are diagrams illustrating the tweezers of the present invention, Fig. 5 and Fig. 6 are diagrams showing the base material, and Fig. 7 is a diagram illustrating the tweezers of the present invention. The figure showing the clamping tool and Fig. 8 are the figures showing the fork. 1.2... Clamping part 3... Base end part 4... ...Tip 5 ...Base material 9 ...Material patent applicant Inoue Japax Laboratory Co., Ltd., -1'-Tai 2, t 61n (1) The claims of the specification must be included in the attached document.
1. Indication of the incident 1985 Patent Application No. 289.706 2. Name of the invention Tweezers 3. Relationship with the person making the amendment fl Appointment of patent applicant Location Yokohama City, Kanagawa Prefecture Address: 5289 Michisho, Nagatsuta-cho, Midori-ku Please correct the attached paper. (2) In the 6th line of page 5, change ``each alloy or'' to ``If Ti is used as a base material, it may be used in a medium gas or powder, or by using a diffused solid electrode, laser treatment, partial discharge, or other methods. Carbonization and nitridation are performed by heat treatment of TiC,T
A layer such as iN is obtained at a depth of about 0.01 to 0.1 mm from the surface. Also, or” is corrected. (3) Correct the gap J in the second line of page 4 to 1° gap. (4) On page 8, line 5 of the same page, after "Pin hit is possible." [Especially when Ti is used as the base material, laser treatment, partial discharge, etc. in a medium gas or powder, using a diffused solid electrode, etc. Other heat treatments include carbonization and nitridation to form layers of TiC, TiN, etc. from the surface by 0.01 to 0.
It is possible to obtain a depth of about 11III1. ” is inserted. (1) Tweezers that continuously process and form an integrated ffl material, a base end portion from this base material, and a pair of clamping portions having an arbitrary shape and arbitrary thickness connected to this base end portion. (2 ) The tweezers according to claim 1, in which the pair of clamping portions are rounded and connected to the base end. (3) The tweezers according to claim 1, wherein the base material is a heat-treated base material. ( 4) The tweezers according to claim 1, wherein the base material is a composite material made by joining a plurality of materials together. (5) The tweezers according to claim 1, wherein the machining is wire cut electrical discharge machining. Tweezers. (6) The tweezers according to claim 1, which processes the base material in common in the X direction and individually in the Y direction perpendicular to it. (7) Continuously from the base material. (8) The base material is Ti, and the portions requiring hardness are carbonized and processed.
The tweezers according to claim 1, which are nitrided. (9) The tweezers according to claim 8, wherein the carbonization and nitridation are performed by laser treatment in a medium gas or powder. (10) The Vincera according to claim 8, wherein the carbonization and nitridation are performed by partial discharge treatment using a diffused solid electrode. ”Procedure Nerti correct analysis (method) 1, Indication of the case 1985 Patent Application No. 289,706 2, Name of the invention 3, Relationship with the person making the amendment Patent applicant address Yokohama, Kanagawa Prefecture City Midori Ward Mayor) 5289 Uedamachi Michisho
Address 1, Indication of the case 1985 Patent Application No. 289.706 2, Name of the invention Tweezers 3, Relationship with the person making the amendment f1 Patent applicant Location 5289 Michisho, Nagatsuta-cho, Midori-ku, Yokohama-shi, Kanagawa Prefecture Address Name (048) Inoue Japax Research Institute Representative Kiyoshi Inoue Contact: Telephone Yokohama (045) 922-3121 (Main) Ji4, Date of Amendment Order April 28, 1985 (1) ) "Figure 2 (a) (
b), Figure 3 (c) (d) J is 1 - Figure 2 (C) < d
) is a diagram illustrating the tweezers of the present invention, FIG. 3(e)
<f) is a diagram illustrating the tweezers of the present invention.''

Claims (7)

[Claims] (1) Tweezers that continuously process and form an integral base material, a proximal end portion from the base material, and a pair of clamping portions having an arbitrary shape and arbitrary thickness connected to the proximal end portion. (2) The tweezers according to claim 1, wherein the pair of clamping portions are rounded and continue to the base end portion. (3) The tweezers according to claim 1, wherein the base material is a heat-treated base material. (4) The tweezers according to claim 1, wherein the base material is a composite material made by joining a plurality of materials together. (5) The tweezers according to claim 1, wherein the machining is wire cut electrical discharge machining. (6) The tweezers according to claim 1, wherein one of the base materials is processed in common in the X direction, and individually processed in the Y direction perpendicular thereto. (7) The tweezers according to claim 1, in which a plurality of tweezers of the same shape are successively machined from a base material in parallel.