TW201918320A - Method for forming a spanner - Google Patents

Abstract

A method for forming a spanner includes following steps: preparing a cylindrical metal blank, heating the metal blank to become softened, shaping the metal blank by pressing and pushing the metal blank forward on a shaping die with a pushing unit to form two head sections and a holding section connected between the head sections, and stamping the metal blank when the metal blank still has residual heat to flatten the holding section and shape each head section into a spanner-shaped part. Therefore, a spanner product is made. The method simplifies the processing procedures, decreases residual materials, achieves a quick shaping operation, reduces processing costs, and increases the forming efficiency.

Description

Wrench tool forming method

The present invention relates to a tool forming method, and more particularly to a wrench tool forming method.

Referring to FIG. 1 and FIG. 2, a cold forging manufacturing method 1 of a conventional wrench tool includes a preparation step 11, a head region forming step 12, a press forming step 13 and a strip forming step 14; The preparation step 11 is provided with a round bar-shaped metal blank a; in addition, the head region forming step 12 is cold forged and stamped to form a round head a1 shape for the two ends of the metal blank a; thus, the punching step 13 That is, the two round heads a1 formed by the foregoing steps are punched by a punching device (not shown), so that the metal blank a having the round head a1 is stamped to exhibit a flat shape of the wrench tool 2 The grip and the appearance of the lock portion; finally, in the stripping step 14, a punch (not shown) is further provided and the grip and the periphery of the lock portion are formed for the wrench tool 2 Excess material is removed, so that the wrench tool 21 can be visualized, thus completing the forming of the wrench tool 2.

However, after the actual operation, it is found that, in view of the conventional wrench tool 2, all kinds of punching machines with different driving forces are used for the punching operation in various stages, that is, the cold forging forming of the preliminary round head a1, the grip and the The stamping forming of the locking groove can effectively form the overall shape of the wrench tool 2, so that the driving force of the punching machine equipment is much higher than that of the general machine, so that sufficient driving force can be obtained. In order to carry out the cold forging and stamping stroke of metal, the equipment used in each part to be formed may be different, and the impact force on the machine body may be excessively affected for a long time, which may cause the wear of the machine body, that is, in the machine tool. The cost of the equipment is relatively increased, and the molding work of the wrench tool 2 can be completed by the conversion between the tools and the implements of the different driving forces during the molding process of the wrench tool 2 at various stages. This makes the processing time more tedious in the process, resulting in poor processing efficiency, resulting in increased manufacturing costs and problems, which is not economical. Room for improvement.

Therefore, the object of the present invention is to provide a wrench tool forming method, which is advantageous for quickly forming an overall shape of the wrench tool, which not only reduces the processing flow, reduces processing waste, but also achieves rapid prototyping, and can greatly reduce the cost of mechanical and mechanical processing. Expenditure greatly increases the forming rate of the wrench tool.

Therefore, the method for forming a wrench tool according to the present invention includes a preparation step, a heating step, a molding step and a stamping step; wherein, in the preparing step, a metal blank having a round shape wire is prepared, and The metal blank is subjected to segmental shearing so that in the heating step, each of the metal blanks can be respectively subjected to high-temperature heating, thereby causing the material of the metal blank to be softened, and more in the molding step. The metal blank can be adjusted on the molding machine in a high temperature state, so that the metal blank is plastically formed, and one of the two ends of the holding area is larger than the holding. At the same time, the head region of the zone can be adjusted by the plastic molding of the plastic machine, and the microstructure density of the metal blank can be changed, and the mechanical properties are further improved, and then the high temperature softening state is still maintained in the head regions. The stamping forming steps are respectively performed, and the holding area is flat, and the head areas are respectively formed into a locking portion (groove, hole) shape to form a wrench contour and the stamping process No more waste is generated, and the required size and shape are also in the control range, and there is no excessive cracking. Therefore, the yield can be effectively increased greatly, that is, the stamping step is completed, so that the wrench is reached. The rapid prototyping of the tool is based on the continuous continuous process of high temperature heating, adjustment molding and rapid stamping, which not only reduces the processing flow, reduces the waste generation, effectively improves the processing efficiency of the wrench, and achieves the rapid forming of the wrench. The overall shape can greatly reduce the cost of mechanical and mechanical processing, and effectively improve the molding efficiency of the finished wrench tool.

1 is a flow chart of a cold forging manufacturing method of a conventional wrench tool. 2 is a schematic view of a molding process of the conventional wrench tool. 3 is a flow chart of a method for forming a wrench tool according to a preferred embodiment of the present invention. Figure 4 is a schematic illustration of a partial configuration of the preferred embodiment. Figure 5 is a block diagram of another partial component of the preferred embodiment. Figure 6 is a schematic view showing the forming process of the wrench tool of the preferred embodiment.

The above and other technical contents, features, and advantages of the present invention will become apparent from the Detailed Description of the <RTIgt;

3, FIG. 4, a preferred embodiment of the present invention, the wrench tool forming method 3, which comprises a preparation step 31, a heating step 32, a molding step 33, and a stamping step 34; Wherein, in the preparation step 31, the metal blank b having a round wire material is prepared, and the metal blank material b can be segmented and cut according to the type and size required for the finished product. In this way, the metal billets b can be directly subjected to heating operation; in addition, in the heating step 32, the heater 4 is provided with a heater 4, and the heater 4 can be a high frequency, The medium-cycle wave is also heated by means of electric heating or the like, and the high temperature effect generated by the heater 4 is used for the metal billets b to be heated at a high temperature via the heater 4, thereby making the entire metal billet b as a whole. It shows a softening state due to high temperature.

Continuing the foregoing, when the metal billet b has been softened by high temperature, the molding step 33 can be performed, that is, the molding step 33 is provided with a molding machine 5 (shown in a simplified manner in the figure), and The molding machine 5 has a molding base 51, a mold 52 disposed on the molding base 51 for the metal blank b, and a pair of molds 52 and movable on the mold 52. a piece 53, wherein the metal blank b is placed on the mold for molding, so that the metal blank b is progressively displaced by the pushing member 53, of course, in view of the wrench tool (not shown) Different shapes, the design of the mold 52 formed on the molding base 51 can be replaced by using a plurality of different molds 52 according to the type, size and the like to be formed, that is, when the metal has a high temperature state. After the billet b is placed on the mold 52, it can be compressed by the pushing member 53, so that the metal billet b can be stably fixed while being moved by the pushing member 53, that is, by the molding seat. One end of 51 is gradually moved to the other side, so that the metal blank b is pushed during the movement. The high temperature and movement relationship of the mold is gradually shaped into a holding area b2 and a semi-finished product of the head area b1 located at both ends of the holding area b2, respectively, in the form of the mold 52, and the same The outer diameter d1 of the head region b1 is larger than the outer diameter d2 of the holding region b2 (as shown in FIG. 6), that is, as shown in the figure, and the head regions b1 can change the tissue density during the high temperature plastic deformation process. In order to improve the processing ductility of the metal billet b.

Please refer to FIG. 5 to FIG. 6 . As a result, after the high-temperature molding is completed, the metal blank b of the semi-finished product obtained by the molding step 33 can be further subjected to the press forming step 34, in the punching step 34. It is provided with a punching machine 6, and the punching machine 6 can be stamped for the aforementioned metal billet b which still has a temperature, so that the gripping zone b2 is flattened after being punched, and at the same time, in view of the wrench 7 The shape of the locking portion is divided into a plurality of shapes, that is, as shown in the flowchart of FIG. 6 after the manufacturing, the two ends thereof are respectively circular arcs and have a locking groove type with outward communication, or FIG. 6 After the process of B is shown, one end has an arc and is a locking groove type with outward communication, and the other end has a locking groove type at the center, or is shown in the flow chart C of FIG. After the manufacture, the two ends are in the shape of a round head, and a locking groove is formed in the center, which is mainly due to the appearance of the A, B, and C processes. However, as long as the mold for the press 6 is corrected, the operation can be performed as described above. The process completes the shape of the wrench 7 to be formed. Therefore, after the punching operation of the holding area b2 is completed, the locking portions (grooves, holes) can be formed separately for the head regions b1 to form a wrench 7 , of course, in the process of forming the metal billet b into a wrench 7 , which can be punched by the punching machine 6 times, so that the holding area b2 and the heads can be made The section b1 is formed by multi-stage stamping.

Referring to FIG. 3 to FIG. 6 , when the process is performed, the metal blank b having a round wire is prepared, and the metal blank b is segmented and cut according to the size of the wrench tool 7 which is prepared. And heating and heating the heater 4 to perform high-temperature preheating, so that the temperature of the heater 4 reaches a preset high temperature, the metal billets b can be heated one by one through the heater 4, so that The metal billet b exhibits a softening state after being heated by high temperature, so that the high-temperature heating effect produced by the heater 4 can not only improve the processing ductility of the metal billet b, but also facilitate subsequent operations. The process time of the process can be shortened substantially effectively, and at the same time, the desired shape can be rapidly formed in the high temperature state of the metal billet b body, so that when the metal billet b is heated, After that, the overall molding work of the metal blank b can be continued. At this time, the metal blank b is placed on the mold 52, and the pushing member 53 corresponding to the mold 52 is used to top the metal blank. b, the pusher 53 can be actuated on the mold 52 Moving, causing the metal billet b to move along the mold 52 under the driving of the pushing member 53, so that the metal billet b is subjected to the double action effect of the high temperature and the shifting effect of the metal billet b. The plastic deformation is gradually started in the shifting operation, and the contour of the mold 52 is formed to form the head region b1 having the holding portion b2 and the both ends of the grip portion b2, and is molded. When the outer diameter d1 of the head region b1 is greater than the outer diameter d2 of the holding region b2, and then the metal billet b still has a temperature, the punching machine 6 can be reused for the holding region b2. So that the holding area b2 is flattened after being punched, and then by the punching die (not shown) of the punching machine 6, respectively, an impact force is generated for the head regions b1, so that the The metal structure of the head region b1 is subjected to the pushing state of the impact force, and the shape of the locking portion (groove, hole) is formed, so that a wrench 7 is formed, so that the metal billet b is still in a temperature state. Down the stamping operation, it will not produce excessive cracking, Moreover, the amount of waste is small, and the required molding size and shape are also in the control range, so that the yield can be effectively increased greatly. Therefore, in the stamping operation, the metal billet b is still left after being heated and plastically deformed. Under the condition, the holding area b2 and the head area b1 are press-formed, so that the stamping operation can be formed quickly and stably, which is advantageous for the production cost reduction; therefore, the high-temperature heating, the adjustment molding, the rapid press forming, and the like are consistent. The continuous process can not only reduce the processing flow and the use of processing tools, reduce the waste generation and machine wear, effectively improve the processing efficiency, and achieve the rapid formation of the overall shape of the wrench tool 7, and can greatly reduce the cost of machining. Effectively improve the forming efficiency of the finished wrench tool 7.

As can be seen from the foregoing description, the present invention does have an enhancement of the effects described below in the molding method, as follows:

1. The present invention utilizes heating to soften the metal blank b, which not only improves the processing ductility of the metal billet b, but also facilitates the process time of each step performed subsequently. Shorten, it can reduce the use of processing tools, reduce waste generation and machine wear, and effectively improve processing efficiency.

2. Following the above, in the molding step 33 and the press forming step 34, the metal blank b after the high temperature heating is separately subjected to plastic deformation operation, so that the process is different from the conventional one. It is necessary to carry out the conversion between the implements and the implements of various driving forces in order to obtain the desired finished product type. Therefore, not only the required holding area b2 but also the head area can be quickly molded by the high temperature softening effect. The formation of b1, without the generation of waste, and at the same time in the subsequent press forming step 34, the punching machine 6 can be used for multiple times of pressing, so that the holding area b2 can be completely flattened. The head regions b1 are formed into a form of a locking portion (groove, hole), which not only reduces the use of the processing tools used, but also greatly reduces the amount of waste, and enables the stamping operation to be formed quickly and stably, which is advantageous for the process. Reduced production costs.

In summary, the method for forming a wrench tool of the present invention uses a heating step to heat the metal blank of the round-shaped wire material which has been prepared and cut, which not only improves the processing and ductility of the metal blank, but also improves the processability of the metal blank. The utility model can effectively shorten the subsequent processing time, and the plastic material is plastically deformed in a state of softening due to high temperature, that is, a holding area having a wrench tool appearance, and a head area formed at both ends of the holding area, and finally Further, through the stamping and forming step, the metal stamping and holding portion of the metal billet having a temperature is flattened by using a plurality of stamping operations, and the shape of the locking portion (groove, hole) is formed. Therefore, through the continuous process of high-temperature heating, adjustment molding and rapid stamping, to reduce the processing flow and the use of processing tools, reduce waste generation and machine wear, effectively improve processing efficiency, and make stamping operations It can be formed quickly and stably, and the production cost is reduced, so that the object of the present invention can be achieved.

The above is only the preferred embodiment of the present invention, and the scope of the present invention is not limited thereto, that is, the simple equivalent changes and modifications made in accordance with the scope of the present invention and the contents of the description of the invention. All should remain within the scope of the invention patent.

(known)

1‧‧‧Wrought tool for cold forging manufacturing method

11‧‧‧Material preparation steps

12‧‧‧ Head zone forming step

13‧‧‧Pressing step

14‧‧‧Drawing step

A‧‧‧metal billet

A1‧‧‧ round head

2‧‧‧Wrench tools

(this invention)

3‧‧‧Wrench tool forming method

31‧‧‧Material preparation steps

32‧‧‧heating steps

33‧‧‧Molding steps

34‧‧‧Pressing step

4‧‧‧heater

5‧‧‧Molding machine

51‧‧‧ molded seat

52‧‧‧Mold

53‧‧‧Pushing pieces

6‧‧‧Pressing machine

7‧‧‧Wrench

B‧‧‧metal billets

B1‧‧‧ head area

B2‧‧‧ Holding area

D1‧‧‧ outer diameter of the head area

D2‧‧‧ grip area outer diameter

Claims (3)

A wrench tool forming method, comprising: a preparation step, preparing a metal blank having a round shape wire, and the metal blank is subjected to segmental shearing; and a heating step, comprising: a heater, The heater can separately heat each of the metal blanks prepared in the previous step to make the metal blank soften due to high temperature; a molding step, which is equipped with a molding machine, the plastic The molding machine has a molding seat, a mold disposed on the molding base for the metal blank, and a pushing member corresponding to the molding base and movable on the mold, wherein The metal blank is progressively displaced by the pushing member such that the metal blank forms a holding area and a head area respectively located at both ends of the holding area, and the outer diameter of the head area is larger than An outer diameter of the holding area; and a stamping forming step, which is provided with a punching machine, which can punch the metal blank which still has the temperature to make the holding area appear flat, and the punching area Waiting for the head area to form a lock ( , Hole) shape, to form a wrench. The wrench tool forming method according to claim 1, wherein the heater is heated by a high frequency, a medium wave or an electric heat. The method of forming a wrench tool according to the first aspect of the invention, wherein the stamping step is stamped in a plurality of times so that the grip area and the head regions are stamped and formed in a segmented manner.