TWI462808B - Metal handle manufacturing method - Google Patents

Description

Metal handle manufacturing method

The present invention relates to a method of manufacturing a metal handle.

With the advancement of human science and technology, various metal processing methods have evolved and increased, bringing convenience and variety of metal products processing. Nowadays, people not only need to control precise dimensional tolerances in processing methods, but also hope to process them. The cost of the billet in the process, and the associated costs, are reduced.

The conventional metal handle processing method mainly involves directly forging the blank and removing excess blank material, or directly molding the blank material by turning and milling, but it causes waste of cost. Nowadays, in the manufacture of metal handles of different shapes, the blanks after blanking are generally used, which are pre-formed by forging, and then milled after removing excess blanks to meet the surface precision and roughness of the handle shape. degree. When the above-mentioned forging processing method is adopted, sufficient blank material is reserved for forging in the blanking to avoid the problem of lack of material, but in the forging process, the excess blank material extruded from the mold needs to be removed, resulting in The problem of waste of blank material, forging die cutting and cost increase; in addition, this processing method has to wait for the next process to find the material shortage or the abnormality of the sand hole, and waste cost and manufacturing man-hour.

In view of the above, it is necessary to propose a method of manufacturing a metal handle that can reduce the waste of the billet and reduce the manufacturing cost.

A method for manufacturing a metal handle comprises the steps of: blanking, providing a blank; extrusion, extruding a blank to obtain a preform; turning and milling, cutting the preform to obtain a finished size of the metal handle The same pre-forged body; forging, forging the pre-forged body to obtain metal handles with different appearances.

Compared with the prior art, the handle of the metal handle manufacturing method has the advantages of processing with less reserved amount of blanks, and the cost is lower, and the processing by preforming and milling In the way, the size controlled is more precise, and the advantages of less mold loss and easier control can be obtained during forging. No waste is generated during the forging process, and the material can be controlled to lack material, sand hole or due to forging die loss. The defective products save costs.

A preferred embodiment of the present invention discloses a method of manufacturing a metal handle and a handle made by the method, which is suitable for use with a non-powered tool, a power tool, or a generally grasped product or a handle thereof. Moreover, the appearance of the metal handle to be formed has different appearances depending on the product to be matched. The following molding method is described by taking a metal handle as a straight tool.

The manufacturing method of the metal handle according to the preferred embodiment includes the following steps: blanking. Referring to Figure 1, a blank 10 is cut from a coffin according to the shape and size of the handle. In this embodiment, the material of the blank may be any metal material.

extrusion. Referring to FIG. 2, the blank 10 is extruded using a mold 20, which includes an upper mold 201 and a lower mold 202. The extrusion upper mold 201 is provided with a molding surface toward one end of the lower mold 202. The shape of the metal handle to be formed is designed, and the blank 10 is placed in the lower mold 202 during extrusion, and the upper mold 201 is pushed to the lower mold 202 by applying appropriate temperature and pressure, thereby obtaining the preform 30. During the extrusion process, there is no mold opening or excess blank material to be removed, and the cost associated with extrusion is much less than that of direct blanking of the blank 10, so that the more accurate raw material and lower cost can be used.

Turning and milling. Referring to FIG. 3 to FIG. 4, the preform 30 is surface-processed by using a processing machine, and the processing machine includes a jaw 401, a cutter 402, a turning tool 403, and the clamping jaw 401 fixes the preform 30 and Rotating, a cutter 402 locks a turning tool 403, and the surface of the preform 30 is carried out by the turning tool 403. The cutting is performed to obtain the pre-forged body 50 having the same size as the finished metal handle. It can be understood that the processing machine can also be other cutting type processing machines, such as a milling machine. Since the shape and size of the preform 30 formed by extrusion are substantially the same as those of the metal handle required, the finishing time of the turning and milling can be greatly shortened, and the shape of the preform 30 can be processed by the finishing of the turning and milling. Accuracy and dimensional accuracy are high, which is beneficial to reduce the size variation during forging and has better surface roughness. The cutting process is provided with a mounting surface for fixing the blade, and the preform 30 is clamped in the clamping jaw 401. The cutting tool 402 and the clamping jaw 401 can be manually or dynamically driven to cut, the cutter 402 and the clamping jaw. The 401 travel is not limited to the simultaneous mover.

forging. Referring to FIG. 5, the pre-forging body 50 is forged by using an implement, and the forging machine includes an upper mold 601, a lower mold 602, and a forged upper mold 601 is provided with a molding surface at one end of the lower mold 602. The molding surface is designed according to the shape of the metal handle 70 to be formed, and the pre-forged body 50 is placed in the upper mold 601 and the lower mold 602 to be forged, thereby obtaining the metal handle 70.

In the handle 70 obtained by the above-described manufacturing method of the metal handle, since the roughing stage is a pressing method, the material is extruded, and no material is detached from the blank 10, so that no waste is generated, and if it is manufactured by using a mold In the method of forging, excess blank material is required to be removed. For example, the conventional forged body 80, please refer to FIG. 6 and FIG. 7. After the forging, the forged preform 802 must be cut to obtain the forged preform 801, which can be understood redundantly. The blanks have different billets due to the use of technology. In the finishing stage, although the method is still turning and milling, the preform 30 is subjected to external shape trimming. However, since the shape or size of the preform 30 is substantially the same as the required metal handle 70, material waste is small. When the pre-forged body 50 produced by cutting is used for forging, the material waste and the problem of defective products can be greatly reduced, and the service life of the forging die is also increased because no excess material needs to be removed.

In summary, the present invention complies with the requirements of the invention patent and submits a patent application according to law. However, the above is only a preferred embodiment of the present invention, and the scope of the present invention The scope of the invention is not limited to the above-mentioned embodiments, and any equivalent modifications or variations made by the person skilled in the art of the present invention should be included in the following patent application.

10‧‧‧Mao-embryo

201‧‧‧Extrusion die

202‧‧‧Extrusion die

30‧‧‧Preforms

401‧‧‧claw

402‧‧‧Tools

403‧‧‧ turning tools

50‧‧‧Pre-forged body

601‧‧‧Forging upper die

602‧‧‧Forged die

70‧‧‧Metal handle

80‧‧‧Chinese forged body

801‧‧‧Forged preforms

802‧‧‧Forged bulk material

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a blank in a method of manufacturing a metal handle of the present invention.

Fig. 2 is a schematic view showing extrusion molding in a method of manufacturing a metal handle according to the present invention.

Fig. 3 is a first state view of the turning and milling process in the method of manufacturing the metal handle of the present invention.

Fig. 4 is a second state view of the turning and milling process in the method of manufacturing the metal handle of the present invention.

Fig. 5 is a schematic view showing the forging type in the method of manufacturing the metal handle of the present invention.

Fig. 6 is a schematic view showing the forging type of the material in the conventional manufacturing method.

Figure 7 is a flow chart of a conventional manufacturing method and a manufacturing method of the present invention.

Claims (6)

A method for manufacturing a metal handle comprises the steps of: blanking, providing a blank; extruding, extruding a blank with an extrusion die to obtain a preform, wherein the extrusion die is mounted on a pressing device The utility model comprises an upper mold and a lower mold fixed on the pressing device, wherein the upper mold is driven by the pressing device to travel relative to the lower mold; turning and milling, precision cutting and shaping the preform, thereby obtaining a pre-forged body having the same size as the finished metal handle; and forging, forging the pre-forged body using a forging die, wherein the forging die is mounted on a device, which comprises an upper die and a lower die, the lower die is fixed In the forging device, the upper die is driven by the forging device to impact against the lower die, thereby obtaining a metal handle. The method of manufacturing a metal handle according to claim 1, wherein the preform has a shape and a size substantially the same as a desired metal handle. The method of manufacturing a metal handle according to claim 1, wherein the extrusion upper mold is provided with a molding surface toward one end of the lower mold, and the molding surface is designed according to a shape of a metal handle to be formed. The method of manufacturing a metal handle according to claim 1, wherein the cutting tool is provided with a mounting surface for fixing the blade, and the preform is clamped in the jaw, and the cutter and the jaw device can be manually or The power is driven to travel, and the tool and jaw travel are not limited to simultaneous actuation. The method of manufacturing a metal handle according to claim 4, wherein the turning and milling is performing surface cutting forming on the preform. The method of manufacturing a metal handle according to the fourth aspect of the invention, wherein the forged upper mold is provided with a molding surface at one end of the lower mold, and the molding surface is designed according to the shape of the metal handle to be formed.