CN102161074A

CN102161074A - Manufacturing method of wing nut

Info

Publication number: CN102161074A
Application number: CN 201010121329
Authority: CN
Inventors: 吴柏熹
Original assignee: TAIWAN YIMAO CO Ltd
Current assignee: TAIWAN YIMAO CO Ltd
Priority date: 2010-02-23
Filing date: 2010-02-23
Publication date: 2011-08-24

Abstract

The invention discloses a manufacturing method of a wing nut. The method comprises the following steps of: cutting a round bar-shaped metal linear material into sections serving as blanks; directly forging and stamping the blanks into crude blanks with nut cap sections through a basic embryo molding step, wherein bent wing sheets are connected to the two sides of the crude blanks; forging and stamping the two wing sheets into butterfly wings with arc sides through a wing shaping step; forging and stamping the nut cap sections into cropping tapers through a nut edge forming step, wherein a positioning groove is concavely formed in the centers on the upper side and the lower side respectively; and forming a semi-finished product with a wing nut cap shape in a cold forging way, and forming a complete wing nut cap through ordinary through hole and tapping steps. By the method, the processing procedures of the wing nut cap can be shortened and simplified; the production is quick; the yield is sharply increased; the waste materials are few; the cost is reduced; and the industrial competitiveness is greatly improved.

Description

The wing nut manufacture method

Technical field

The present invention relates to a kind of wing nut manufacture method, especially a kind of wing nut manufacture method of simplifying procedure that shortens.

Background technology

Known simple and easy sealed design, mostly cooperate nut directly to screw togather by relative screw thread with bolt, reach sealed assembling, and general nut need be used instrument (spanner) operation usually, could lock or dismantle, for this reason, thereby a kind of wing nut that has two butterfly wings can easy operation is early arranged, but existing wing nut manufacture method is nothing more than being divided into cast-forming method and punch forming method; Wherein:

Described cast-forming method, the molten metal liquation is injected the sand mo(u)ld casting, but this forming method, need earlier through the founding molding, with metallic high temperature liquefaction, through the program of injection molding and die sinking, manufacture process is quite loaded down with trivial details again, and the finished product after the moulding forms most pores, causes that rough surface is unsmooth, texture difference and easy fracture.

Described punch forming method, with sheet metal through punching press tortuous with cut off moulding, in manufacture process, can produce sharp keen burr, easy incised wound finger, and can produce more scrap metal causes cost of idleness, deficiency in economic performance.

For this reason, someone develops a kind of research and development design of adopting method for forging and molding to make wing nut, " utilizes the element coil material to forge the manufacture method of wing nut " and CN1327090C " the wing nut manufacture method of cold-forge forming " as Chinese patent CN1024639C; Wherein:

In the technical scheme of Chinese patent CN1024639C, this method defective is: owing to adopt circular wire rod, therefore, forge in the middle of need doing through two sections steps and slightly form cylindricly, could form stock, again through turnover fixture upset process bending two ends double-vane portion, become the blank of wing nut, squeeze type by two sections centres and do to squeeze the type action, afterwards at stock central authorities truncation taper, do through hole again, last step is the alar part moulding, need both wing portions be flattened moulding with die casting machine, and this method fabrication schedule is loaded down with trivial details consuming time, cost improves, and this manufacture method is after double-vane portion flattens action, and its double-vane shape becomes dihedral, and double-vane portion shape can't be done difform various variation, doing variation as desire changes, need re-use cutting machine, turning one by one, not only consuming time, more increase cost, do not meet economic benefit.

In the technical scheme of Chinese patent CN1317090C, the defective of this method is: owing to adopt cylindric wire rod, therefore, need to do middle the forging and slightly form the shape that oblate post is connected long column through spreading, could form stock through cutting off step again, again through the squeezing shaping step, the groove that is swaged into chamfer shape is inwardly pushed in both sides, oblate post center, and the groove periphery is outwards forged long shaping, ability shape coarse-blank, afterwards, do through hole again, final step is the alar part moulding, need long column be forged into one group of mould upwards to roll over perk and gradually wide flat butterfly wing, and this method fabrication schedule is loaded down with trivial details consuming time, production efficiency still can't improve, and manufacture method through six steps, needs different processing mechanical apparatus to cooperate at cylindric wire rod, causes the production line lengthening and increases cost.

For solving the defective of above-mentioned prior art, the inventor is engaged in the experience of screw, nut manufacturing for many years with accumulation, dive meticulously and grind, test again and again, and adhering to the invention spirit of working with perseverance, finally develop a kind of procedure simplification, rapid, waste material is low, and the wing nut manufacture method that can reduce cost.

The patent of invention content

The purpose of this invention is to provide a kind of wing nut manufacture method, with the round bar shape metal wire rod section of cutting into as stock, directly forge into through basic blank step and to have the nut section and both sides are connected the thick embryo that folded over tab is arranged, through alar part shaping step the butterfly wing is rebuild in these two fins forging and pressing again, through the marginal ridge forming step these nut section forging and pressing are shaped to the crop taper again and the upper and lower sides center respectively is concaved with locating slot; In view of the above, finish the semi-finished product of wing nut outward appearance, through carrying out general through hole, tapping step, just form complete wing nut finished product again in the cold forging mode.

Further, can also be between basic blank and alar part shaping step, add an alar part blank step, utilize little fin radian module of repairing that two fins of thick embryo are carried out differential of the arc forging and pressing, just the gradual butterfly wing of rebuilding into is adopted in the differential of the arc forging and pressing in advance of described two fins, make the radian on butterfly wing circular arc limit exquisite more perfect.

According to as can be known above-mentioned, wing nut manufacture method of the present invention is compared with prior art, has plurality of advantages really, and details are as follows:

1. wing nut manufacture method of the present invention, by simple and easy steps such as basic blank, alar part shaping, marginal ridge shapings, finish the manufacturing processing of wing nut, save many steps with respect to prior art, reach the simplification process, do not need too much processing mechanical apparatus, save equipment purchasing cost and maintenance cost relatively, and improve throughput rate and efficient, be good innovation and creation in fact.

2. with above-mentioned, because of simplifying procedure of processing shortened process time, thereby reach volume production usefulness, therefore have the market competitiveness.

Description of drawings

Fig. 1 is a flow chart of the present invention;

Fig. 2 is a wing nut of the present invention top cross-sectional view in process of production;

Fig. 3 is a wing nut of the present invention schematic rear view in process of production;

Fig. 4 is another process block diagram of the present invention;

Fig. 5 is another wing nut of the present invention top cross-sectional view in process of production.

Wherein:

The basic blank 20-alar part of 10-shaping 20A-alar part blank 30-marginal ridge is shaped

The thick embryo of 40-through hole 50-tapping 1-stock 2-

21-nut section 211-locating slot 22-fin 221-circular arc limit

The 23-through hole

The specific embodiment

In order to further specify technology contents of the present invention, feature and practical purpose, below be described in detail as follows with the specific embodiment conjunction with figs.:

At first please refer to shown in Figure 1, a kind of wing nut manufacture method provided by the invention, with the metal wire rod section of cutting into of round bar shape as stock 1, the cold-forge forming machinery that cooperates the wing nut special use, directly procedure is simplified in the shortening of forming through basic blank (10), alar part shaping (20) and marginal ridge shaping steps such as (30), finish the semi-finished product of wing nut outward appearance in the cold forging mode, pass through general through hole (40), the tapping rapid moulding of step continuous and automatic such as (50) again, obtain complete wing nut finished product.

Shown in 2 and 3, the step of the embodiment of the invention includes in conjunction with the accompanying drawings:

Basic blank (10) step is utilized wing nut basic styling module directly stock 1 to be forged into to have nut section 21 and both sides are connected the thick embryo 2 of blank body that folded over tab 22 is arranged, and is moved in alar part shaping (20) step by an anchor clamps gripping;

Alar part shaping (20) step utilizes fin radian trimming module that the butterfly wing that becomes to have circular arc limit 221 is rebuild in two fins, 22 forging and pressing of thick embryo 2, is moved in marginal ridge shaping (30) step by an anchor clamps gripping;

Marginal ridge (30) step that is shaped utilizes the nut Shaping Module that the nut section 21 of thick embryo 2 is shaped to the crop taper and the upper and lower sides center respectively is arranged with locating slot 211, thereby finishes the semi-finished product of wing nut outward appearance, is shifted out by an anchor clamps gripping;

After gripping processing by above-mentioned three step letters, the semi-finished product of this wing nut outward appearance are sent in the interior locating module of through hole (40) step at once and are located, locating slot 211 with nut section 21 is a central point, it is die-cut to carry out through hole, make it have a through hole 23, and take tapping (50) step again at these through hole 23 places, thereby become the complete wing nut with internal thread, it can lock with screw threaded and combine; In view of the above, adopt the metal wire rod section of cutting into, forge into the continuous automatic operation of wing nut one by one, reach shortening and simplify procedure, produce purpose rapid, that output is increased sharply, can promote economic benefit, strengthen industrial competitiveness more significantly as stock 1.

Another embodiment of the present invention, please refer to Fig. 4 and shown in Figure 5, be between basic blank (10) step and alar part shaping (20) step, add alar part blank (20A) step, this alar part blank (20A) step utilizes little fin radian module of repairing that the double fins 22 of thick embryo 2 is carried out differential of the arc forging and pressing, make fin 22 through alar part blank (20A) and alar part shaping (20) step by the gradual one-tenth of the trace butterfly wing, make the exquisite more perfection in circular arc limit 221 of the butterfly wing.

Claims

1. a wing nut manufacture method is characterized in that, with the round bar shape metal wire rod section of cutting into as stock, via the following step:

Basic blank step is utilized wing nut basic styling module directly stock to be forged into to have the nut section and both sides are connected the thick embryo of blank body that folded over tab is arranged;

Alar part shaping step utilizes fin radian trimming module that the butterfly wing that becomes to have the circular arc limit is rebuild in the two fins forging and pressing of thick embryo;

The marginal ridge forming step utilizes the nut Shaping Module that the forging and pressing of the nut section of thick embryo are shaped to the crop taper and the upper and lower sides center respectively is concaved with locating slot, finishes the semi-finished product of a wing nut outward appearance;

After the above-mentioned procedure of processing, be that central point gives through hole, tapping forms a wing nut with the locating slot of this nut section.

2. wing nut manufacture method as claimed in claim 1 is characterized in that, between described basic blank step and the alar part shaping step, also comprises alar part blank step, utilizes little fin radian module of repairing that two fins of thick embryo are carried out differential of the arc forging and pressing.