CN214719895U - One-step forming die for cold extrusion, shrinkage, expansion, arc and tooth pressing - Google Patents

Abstract

The utility model discloses a cold-extrusion shrinkage expands circular arc and presses tooth one shot forming mould relates to cold-extrusion mould technical field, this cold-extrusion shrinkage expands circular arc and presses tooth one shot forming mould, including terrace die and the die of setting in the terrace die below, the below of die is provided with the liftout cover, and the activity of the inside axis position of liftout cover is pegged graft and is had the locating pin, and the locating pin is pegged graft in the inside of terrace die and die, is provided with the die cavity between terrace die and the die, and the inside of terrace die and die is provided with respectively cup joints last spacing pipe and lower spacing pipe on locating pin surface, goes up the spacing pipe and is provided with between the lower spacing pipe and is located the die cavity inside and cup joint the work piece on locating pin surface. The utility model discloses a set up terrace die, go up spacing pipe, down spacing pipe, locating pin, liftout cover, thimble and liftout pole, solved among the prior art terminal surface tooth depth that exists in the special-shaped bush production manufacturing process of middle circular arc, terminal surface tooth differ, the shaping degree of difficulty is big, production efficiency hangs down problem.

Description

One-step forming die for cold extrusion, shrinkage, expansion, arc and tooth pressing

Technical Field

The utility model relates to a cold extrusion mould technical field specifically is a cold extrusion contracts circular arc that expands and presses tooth one shot forming mould.

Background

The middle arc and the special-shaped bushing with the toothed end face are mainly used for ensuring that a bolt is screwed and slipped, the middle arc aims to enhance the damping rigidity of rubber, the manufacturing process of similar workpieces in the prior art is formed by multiple bulging, necking and hole shrinkage through a punch press or an oil press and then tooth pressing, the whole manufacturing process is complex and has multiple processes, and the requirements on the hardness, the height and a die of a blank are high, so that the depth of the teeth on the end face of the workpiece is different, the height and the size after molding are difficult to control, the molding difficulty is high, the production and manufacturing efficiency is low, and the production requirements cannot be met.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

The not enough to prior art, the utility model provides a cold-extrusion contracts and expands circular arc and press tooth one shot forming mould has solved among the prior art terminal surface tooth depth that exists in the special-shaped bush production manufacturing process of middle circular arc, terminal surface tooth and has differed, the shaping degree of difficulty is big, production efficiency hangs down problem.

(II) technical scheme

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a cold-extrusion shrinkage and bulging circular arc and press tooth one shot forming mould, includes terrace die and the die of setting in the terrace die below, the below of die is provided with the liftout cover, the activity of the inside axis position of liftout cover is pegged graft there is the locating pin, and the locating pin is pegged graft in the inside of terrace die and die, be provided with the die cavity between terrace die and the die, the inside of terrace die and die is provided with respectively cup joints last spacing pipe and lower spacing pipe on locating pin surface, it just cup joints the work piece on locating pin surface to be provided with to be located the die cavity inside between last spacing pipe and the lower spacing pipe, the bottom of liftout cover is provided with the thimble, the bottom of thimble is provided with the liftout pole.

Preferably, the die cavity is cylindrical with a thick middle part and two thin ends, and tooth grooves are formed in the opposite ends of the upper limiting pipe and the lower limiting pipe.

(III) advantageous effects

The utility model provides a cold-extrusion shrinkage expands circular arc and presses tooth one shot forming mould possesses following beneficial effect:

the utility model discloses a set up the terrace die, the die, go up the spacing pipe, lower spacing pipe, the locating pin, the liftout cover, thimble and liftout pole, constitute the throat with whole mould respectively, the bulging, press the tooth, five parts of shrinkage cavity and liftout are constituteed, with the throat, the bulging, press the tooth, four manufacturing process combinations in the throat are in the same place, it needs throat many times originally to dissolve, the bulging, the technological problem of tooth is recompressed in the throat, reach and improved production efficiency, product quality has been promoted, manufacturing cost and equipment resource's effect has been reduced, middle circular arc among the prior art has been solved, the terminal surface tooth depth that exists is different in the special-shaped bush production manufacturing process of tooth is taken to the terminal surface, the big degree of difficulty of shaping, the problem that production efficiency is low.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

fig. 2 is the structure schematic diagram of the position of the male die and the female die of the utility model.

In the figure: 1. a male die; 2. a female die; 3. a material ejecting sleeve; 4. positioning pins; 5. a mold cavity; 6. an upper limit pipe; 7. a lower limit pipe; 8. a workpiece; 9. a thimble; 10. and a material ejecting rod.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

As shown in fig. 1-2, the utility model provides a technical solution: the utility model provides a cold-extrusion shrinkage and bulging circular arc and press tooth one shot forming mould, including terrace die 1 and the die 2 of setting in terrace die 1 below, the below of die 2 is provided with liftout cover 3, the activity of the inside axis position of liftout cover 3 is pegged graft and is had locating pin 4, and locating pin 4 is pegged graft in the inside of terrace die 1 and die 2, be provided with die cavity 5 between terrace die 1 and the die 2, the inside of terrace die 1 and die 2 is provided with respectively cup joints at last spacer tube 6 and lower spacer tube 7 on locating pin 4 surface, go up spacer tube 6 and be provided with between the spacer tube 7 and be located the inside work piece 8 that just cup joints on locating pin 4 surface of die cavity 5, the bottom of liftout cover 3 is provided with thimble 9, the bottom of thimble 9 is provided with ejector beam 10.

As a technical optimization scheme of the utility model, thick both ends are thin cylindricly in the middle of die cavity 5 is, go up spacing pipe 6 and be provided with the tooth's socket with spacing pipe 7's looks remote site down.

The working principle is as follows: the whole die is respectively composed of five parts of necking, bulging, tooth pressing, hole shrinking and material ejecting, four manufacturing processes of necking, bulging, tooth pressing and hole shrinking are combined together, the technical problem that the tooth pressing is required to be performed by multiple times of necking, bulging and hole shrinking is solved, the effects of improving the production efficiency, improving the product quality and reducing the production cost and equipment resources are achieved,

the whole die work is divided into five steps: necking, bulging, tooth pressing, reducing and material ejecting, wherein a blank of a workpiece 8 to be processed is sleeved on a positioning pin 4 and is placed in a die cavity 5 on a female die 2, an oil press is started, the male die 1 and the female die 2 are matched, and because the sizes of the upper end and the lower end of the die cavity 5 are smaller than that of the blank of the workpiece 8, necking plastic deformation is completed during die matching; the middle size of the die cavity 5 is larger than that of the blank of the workpiece 8, so that bulging plastic deformation is completed during die assembly; meanwhile, the upper limiting pipe 6 and the lower limiting pipe 7 respectively extrude the top and the bottom of the blank in the die closing process to finish tooth pressing plastic deformation, and tooth grooves are formed in the opposite ends of the upper limiting pipe 6 and the lower limiting pipe 7 to ensure that teeth on the end face of a workpiece 8 are uniform, flat and full; the hydraulic press drives the male die 1 to reset, and the formed workpiece 8 tightly holds the positioning pin 4 and stays in the die cavity 5 on the female die 2, so that the shrinkage cavity plastic deformation is completed; starting the air pump, ejecting the ejector pin 9 through the ejector rod 10, ejecting the ejector sleeve 3 through the ejector pin 9, ejecting the lower limiting pipe 7 through the ejector sleeve 3, ejecting the workpiece 8 through the lower limiting pipe 7, and taking out the workpiece 8 from the die cavity 5 along the positioning pin 4 to finish the ejecting step.

To sum up can, the utility model discloses a set up terrace die 1, die 2, go up spacing pipe 6, down spacing pipe 7, locating pin 4, liftout cover 3, thimble 9 and liftout pole 10, solved among the prior art the terminal surface tooth that exists in the special-shaped bush production manufacturing process of middle circular arc, terminal surface tooth and differ deeply, the shaping degree of difficulty is big, the problem that production efficiency is low.

It should be noted that, in this document, terms such as "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (2)

1. The utility model provides a cold-extrusion shrinkage and swell circular arc and press tooth one shot forming mould, includes terrace die (1) and die (2) of setting in terrace die (1) below, its characterized in that: the die is characterized in that an ejection sleeve (3) is arranged below the female die (2), a positioning pin (4) is movably inserted in the inner axis position of the ejection sleeve (3), the positioning pin (4) is inserted in the male die (1) and the female die (2), a die cavity (5) is arranged between the male die (1) and the female die (2), an upper limiting pipe (6) and a lower limiting pipe (7) which are sleeved on the surface of the positioning pin (4) are respectively arranged in the male die (1) and the female die (2), a workpiece (8) which is located in the die cavity (5) and sleeved on the surface of the positioning pin (4) is arranged between the upper limiting pipe (6) and the lower limiting pipe (7), an ejector pin (9) is arranged at the bottom of the ejection sleeve (3), and an ejection rod (10) is arranged at the bottom of the ejector pin (9).

2. The cold extrusion, shrinkage, expansion, arc and tooth pressing one-step forming die as claimed in claim 1, wherein: the die cavity (5) is cylindrical with a thick middle part and two thin ends, and tooth grooves are formed in opposite ends of the upper limiting pipe (6) and the lower limiting pipe (7).

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