CN204975172U - A cold mould of passing through many hands or places of putting for producing trapezoidal terminal surface tooth meshing cover has - Google Patents

Abstract

The utility model discloses a cold swing rolling die used for producing a trapezoidal end face gear meshing sleeve, which comprises an upper die and a lower die. The upper mold includes an upper mold base, an upper mold backing plate and an upper mold core. The backing plate of the upper mold is installed in the middle part of the upper mold base, the upper mold core is installed on the lower surface of the backing plate of the upper mold, and the lower end of the upper mold core is a forming part. The lower mold includes a lower template, a lower mold cushion core, a lower mold cushion jacket, a lower mold core, a lower mold jacket and a push rod. The lower mold cushion core and the lower mold cushion jacket are fixedly installed on the lower template, and the middle part of the lower template, the lower mold cushion core and the lower mold core is provided with a movable cavity, and the ejector pin is installed in the movable cavity, and the lower mold jacket passes through the taper excess. Cooperate and press fit on the outside of the lower mold core, and the middle part of the upper end of the lower mold core is provided with a forming cavity of trapezoidal teeth. The upper mold core of the utility model is fixedly installed on the upper mold base through the upper mold pressing plate provided on the upper mold by bolts, so as to facilitate the replacement of the upper mold core, thereby saving the production cost. The upper mold core and the lower mold core are made of high-carbon high-chromium tool steel, which improves their service life.

Description

A cold rotary rolling die for producing gear meshing sleeves with trapezoidal end faces

technical field

The utility model relates to a mould, in particular to a cold swing rolling mould, which is used to produce a trapezoidal end face gear meshing sleeve.

Background technique

At present, the processing method of the meshing sleeve with trapezoidal end teeth is hot die forging blank + subsequent finishing + milling trapezoidal end teeth. The blank of the hot die forging billet has a large allowance for subsequent finishing, and the production efficiency is extremely low; at the same time, the blank of the hot die forging billet does not have trapezoidal end face teeth, and its end face tooth shape is formed by subsequent milling. The production efficiency of the milling trapezoidal face gear is not high, and the load capacity of the milled face gear is low (because the metal fiber streamline of the face gear is cut off). Therefore, this processing method has problems such as low material utilization rate, low production efficiency, high production cost, and poor bearing capacity of the engaging sleeve.

Utility model content

In view of the above-mentioned deficiencies, the purpose of this utility model is to provide a cold swing rolling die for producing trapezoidal end tooth meshing sleeves, using the cold swing rolling mold to produce trapezoidal end tooth meshing sleeves, which has high material utilization rate and production High efficiency, low production cost, long service life of the mold and so on.

In order to achieve the above object, the technical solution provided by the utility model is:

A kind of cold rotary rolling mold used for producing trapezoidal end-face gear meshing sleeve includes an upper mold and a lower mold matched with the upper mold, the upper end of the upper mold is equipped with a swing head seat, and the upper mold includes an upper mold base, an upper mold Mold backing plate, upper mold core and upper mold jacket. The upper mold backing plate is installed in the middle of the upper mold base, the upper mold core is installed on the lower surface of the upper mold backing plate, the upper mold outer sleeve is set outside the upper mold core, and the lower end of the upper mold core is a plurality of molding department. The lower mold includes a lower template, a lower mold cushion core, a lower mold cushion jacket, a lower mold core, a lower mold jacket and a push rod. The lower die pad cover is fitted outside the lower die pad core through interference heat inserting, the lower die pad core and the lower die pad cover are fixedly installed on the lower template, the lower template, the lower die pad core and the middle part of the lower die core A movable cavity is provided, the ejector rod is installed in the movable cavity, the lower mold jacket is installed outside the lower mold core through taper fit and cold press, and the lower mold core and the lower mold jacket are correspondingly installed on the lower mold core. The upper surface of the lower mold cushion core and the lower mold cushion jacket, the middle part of the upper end of the lower mold core is provided with a forming cavity with trapezoidal teeth that communicates with the movable cavity corresponding to the movable cavity.

As an improvement of the utility model, the upper mold also includes an upper pressing plate, an upper mold pressing plate and an upper core block, the upper mold seat is fixedly installed on the swing head seat through the upper pressing plate, and the upper mold core and the upper mold jacket are fixed on the upper mold base through the upper mold pressing plate with bolts, and the upper core block is installed in the middle of the upper mold core.

As an improvement of the utility model, the upper mold core and the lower mold core are made of high-carbon high-chromium tool steel.

As an improvement of the utility model, the lower mold also includes a lower backing plate, a lower bearing plate, a lower mold seat and a lower pressing plate, and the lower backing plate and the lower bearing plate are fixedly installed on the On the lower template, the lower mold base is sleeved on the outer periphery of the lower mold pad outer casing and the lower mold outer casing and is fixedly installed on the upper surface of the lower template, and the lower pressing plate is sleeved on the lower mold core and the lower mold outer casing. The upper end of the lower mold jacket is fixedly installed on the lower mold base.

As an improvement of the utility model, the ejector rod includes a ejector rod, a middle ejector rod and a lower ejector rod, and the ejector rod, the middle ejector rod and the lower ejector rod are installed in the movable cavity so as to move up and down.

As an improvement of the utility model, the upper surface of the lower mold cushion core and the lower mold cushion jacket are flush.

As an improvement of the present utility model, the upper surface of the lower mold core and the lower mold jacket are flush.

The beneficial effects of the utility model are: the utility model is used to produce a cold swing rolling mold with a trapezoidal end tooth meshing sleeve, because the upper mold core and the upper mold outer cover are fixed by bolts through the upper mold pressure plate set on the upper mold. It is arranged on the upper mold base to facilitate the replacement of the upper mold core, thereby saving production cost. The upper mold core and the lower mold core are made of high-carbon and high-chromium tool steel, thereby improving the service life of the cold rotary rolling mold used for producing trapezoidal end surface gear meshing sleeves. The cold rotary rolling mold is used to produce the gear meshing sleeve with trapezoidal end face, which has the characteristics of high material utilization rate, high production efficiency and low production cost.

Below in conjunction with accompanying drawing and embodiment, the utility model is further described.

Description of drawings

Fig. 1 is a structural schematic diagram of a cold rotary rolling die for producing a trapezoidal end-face tooth engagement sleeve of the utility model.

Each reference numeral in the figure is explained as follows.

Upper mold—1, swing head seat—11, upper mold seat—12, upper mold backing plate 13, upper mold core—14, forming part—141, upper mold jacket—15, upper pressing plate—16, upper mold pressing plate—17 , Upper core block - 18, Lower mold - 2, Lower template - 211, Lower backing plate - 212, Lower bearing plate - 213, Lower mold cushion core - 221, Lower mold cushion coat - 222, Lower mold core - 231, Lower mold core - 231, Lower Die overcoat—232, forming cavity—233, ejector rod—241, middle ejector rod—242, lower ejector rod—243, movable chamber—25, lower mold base—26, lower platen—27.

detailed description

In order to describe the technical content, structural features, achieved goals and effects of the present utility model in detail, the following will be described in detail in conjunction with the embodiments and accompanying drawings.

Please refer to Fig. 1, a cold rotary rolling die for producing trapezoidal end-face gear engagement sleeves includes an upper die 1 and a lower die 2 matched with the upper die 1, the upper end of the upper die 1 is equipped with a swing head seat 11 , the upper mold 1 includes an upper mold base 12 , an upper mold backing plate 13 , an upper mold core 14 and an upper mold jacket 15 . The upper mold backing plate 13 is installed in the middle part of the upper mold base 12, the upper mold core 14 is installed on the lower surface of the upper mold backing plate 13, and the upper mold outer cover 15 is sleeved outside the upper mold core 14. The lower end of the mold core 14 is a plurality of forming parts 141 . The lower mold 2 includes a lower template 211 , a lower mold cushion core 221 , a lower mold cushion jacket 222 , a lower mold core 231 , a lower mold jacket 232 and a push rod. The lower die pad cover 222 is fitted outside the lower die pad core 221 through interference heat inserting, the lower die pad core 221 and the lower die pad cover 222 are fixedly installed on the lower template 211, the lower template 211, the lower die pad A movable cavity 25 is opened in the middle of the core 221 and the lower mold core 231 , and the ejector rod is installed in the movable cavity 25 . The lower mold jacket 232 is installed outside the lower mold core 231 through taper fit and cold press, and the lower mold core 231 and the lower mold jacket 232 are correspondingly installed on the lower mold cushion core 221 and the lower mold cushion jacket 222 of the upper surface. A forming cavity 233 with trapezoidal teeth communicated with the movable cavity 25 is defined in the middle of the upper end of the lower mold core 231 corresponding to the movable cavity 25 .

The upper mold 1 also includes an upper pressing plate 16 , an upper mold pressing plate 17 and an upper core block 18 . The upper mold base 12 is fixedly installed on the swing head base 11 through the upper pressing plate 16, and the upper mold core 14 and the upper mold outer cover 15 are fixedly installed on the upper mold base 12 through the upper mold pressing plate 17 with bolts. Above, the upper core block 18 is installed in the middle of the upper mold core 14 .

In this embodiment, the upper mold core 14 and the lower mold core 231 are made of high carbon and high chromium tool steel.

The lower mold 2 also includes a lower backing plate 212 , a lower bearing plate 213 , a lower mold base 26 and a lower pressing plate 27 . The lower backing plate 212 and the lower bearing plate 213 are fixedly installed on the lower template 211 sequentially from top to bottom, and the lower mold base 26 is sleeved on the outer periphery of the lower mold pad cover 222 and the lower mold cover 232 And fixedly installed on the upper surface of the lower template 211 . The lower pressing plate 27 is sheathed on the upper end of the lower mold core 231 and the lower mold outer casing 232 and fixedly installed on the lower mold base 26. The structure of the lower pressing plate 27 is designed to fix the lower mold cushion core 221 and lower die pad overcoat 222.

The ejector pin includes an ejector pin 241, a middle ejector pin 242 and a lower ejector pin 243, and the ejector pin 241, the middle ejector pin 242 and the lower ejector pin (243) are installed in the movable chamber 25 so as to move up and down.

In this embodiment, the upper surfaces of the lower die pad core 221 and the lower die pad cover 222 are flush.

In this embodiment, the upper surfaces of the lower mold core 231 and the lower mold casing 232 are flush.

The utility model is used to produce a cold rotary rolling mold with a trapezoidal end tooth meshing sleeve, which is used to install on a rotary rolling machine (not shown in the figure), and its working process is as follows: turn on the power supply of the rotary rolling machine, start the rotary rolling machine machine, the swing head of the swing roll machine performs circular swing, and the workbench of the swing roll machine reciprocates up and down; the upper mold 1 for producing a cold swing roll mold with a trapezoidal end face tooth engagement sleeve is installed on On the swing head of the swing rolling machine, the lower mold 2 is fixed on the working table of the swing rolling machine, and the coaxiality of the upper mold 1 and the lower mold 2 is guaranteed to be good; adjust the travel switch position of the swing rolling machine to ensure that the working table of the swing rolling machine The stroke meets the requirements of the forming process. First press the return switch of the table and the return switch of the ejection system of the rotary rolling machine, return the worktable of the rotary rolling machine, and return the ejection system, and then place the billet to be rolled in the forming cavity 233 of the lower mold 2; then , press the pressing switch of the rotary rolling machine table, the rotary rolling machine table will move upward, the upward movement of the rotary rolling machine table will drive the lower mold 2 to move upward, and the upper mold core 14 in the upper mold 1 will be rolled blanks Carry out swing rolling forming; when the swing rolling machine workbench moves to the set travel switch position, it will stop moving upward, and the upper mold core 14 has also completed the cold swing rolling forming; press the return switch of the swing rolling machine workbench, along with the swing For the return journey of the rolling machine workbench, the upper mold 2 installed on the swing rolling machine workbench drives the lower mold core 231 to return to the original position; then press the ejector switch of the ejector system, and the ejector system will push the The lower ejector rod 243 and the middle ejector rod 242 move upward, thereby pushing the ejector rod 241 to move upward, and the ejector rod 241 moves upward to push out the formed part of the engaging sleeve having a trapezoidal end surface tooth structure.

As mentioned above, the utility model is used to produce a cold swing rolling mold with trapezoidal end face gear meshing sleeve. Since the upper mold core 14 and the upper mold outer cover 15 are fixed by bolts through the upper mold pressing plate 17 provided on the upper mold 1 It is arranged on the upper mold base 12 to facilitate the replacement of the upper mold core 14, thereby saving production cost. The upper mold core 14 and the lower mold core 231 are made of high-carbon high-chromium tool steel, thereby improving the service life of the cold rotary rolling mold used to produce trapezoidal end face gear meshing sleeves. The cold rotary rolling mold is used to produce the gear meshing sleeve with trapezoidal end face, which has the characteristics of high material utilization rate, high production efficiency and low production cost.

According to the disclosure and teaching of the above specification, those skilled in the art to which the present utility model belongs can also change and modify the above embodiment. Therefore, the utility model is not limited to the specific implementation manners disclosed and described above, and some modifications and changes to the utility model should also fall within the scope of protection of the claims of the utility model. In addition, although some specific terms are used in this specification, these terms are only for convenience of description, and do not constitute any limitation to the present invention. The use of other devices identical or similar thereto is within the protection scope of the present invention.

Claims (7)

1. one kind for the production of the cold drawn section mould with trapezoidal end faces tooth engaging sleeve, it is characterized in that: the counterdie (2) comprising patrix (1) and match with patrix (1), described patrix (1) upper end is equiped with yaw seat (11), this patrix (1) comprises upper bolster (12), upper die plate (13), upper mold core (14) and patrix overcoat (15), described upper die plate (13) is installed in the middle part of upper bolster (12), described upper mold core (14) is installed in the lower surface of upper die plate (13), patrix overcoat (15) is colded pressing by tapering interference fit and is loaded on upper mold core (14) outward, this upper mold core (14) lower end is multiple forming part (141), described counterdie (2) comprises lower bolster (211), counterdie bedding core (221), lower die-cushion overcoat (222), lower mold core (231), counterdie overcoat (232) and push rod, described lower die-cushion overcoat (222) is bushing in counterdie bedding core (221) outward by interference heat, counterdie bedding core (221) and lower die-cushion overcoat (222) are fixed on described lower bolster (211), lower bolster (211), counterdie bedding core (221) and lower mold core (231) middle part offer movable chamber (25), described push rod is installed in movable chamber (25), described counterdie overcoat (232) is colded pressing by tapering interference fit and is loaded on described lower mold core (231) outward, and lower mold core (231) and counterdie overcoat (232) correspondence are installed in the upper surface of described counterdie bedding core (221) and lower die-cushion overcoat (222), the corresponding described movable chamber (25) of described lower mold core (231) upper center offers the shaping die cavity (233) with stepped tooth be connected with movable chamber (25).

2. a kind of cold drawn section mould for the production of having trapezoidal end faces tooth engaging sleeve as claimed in claim 1, it is characterized in that: described patrix (1) also comprises top board (16), upper molded plate (17) and upper pellet (18), described upper bolster (12) is fixed on described yaw seat (11) by top board (16), described upper mold core (14) and patrix overcoat (15) adopt bolt to be fixed on described upper bolster (12) by upper molded plate (17), described upper pellet (18) is installed in the middle part of upper mold core (14).

3. a kind of cold drawn section mould for the production of having trapezoidal end faces tooth engaging sleeve as claimed in claim 2, is characterized in that: described upper mold core (14) and lower mold core (231) adopt high carbon and chromium tool steel.

4. a kind of cold drawn section mould for the production of having trapezoidal end faces tooth engaging sleeve as claimed in claim 1, it is characterized in that: described counterdie (2) also comprises lower bolster (212), lower loading plate (213), die shoe (26) and lower platen (27), described lower bolster (212) and lower loading plate (213) are fixed on described lower bolster (211) from top to bottom successively, described die shoe (26) is sheathed on the periphery of described lower die-cushion overcoat (222) and counterdie overcoat (232) and is fixed at the upper surface of described lower bolster (211), described lower platen (27) is sheathed on the upper end of described lower mold core (231) and counterdie overcoat (232) and is fixed on described die shoe (26).

5. a kind of cold drawn section mould for the production of having trapezoidal end faces tooth engaging sleeve as claimed in claim 1, it is characterized in that: described push rod comprises ejector beam (241), middle push rod (242) and lower push rod (243), ejector beam (241), middle push rod (242) and lower push rod (243) are movable up and down to be installed in described movable chamber (25).

6. a kind of cold drawn section mould for the production of having trapezoidal end faces tooth engaging sleeve as claimed in claim 1, is characterized in that: described counterdie bedding core (221) is concordant with lower die-cushion overcoat (222) upper surface.

7. a kind of cold drawn section mould for the production of having trapezoidal end faces tooth engaging sleeve as claimed in claim 1, is characterized in that: described lower mold core (231) is concordant with counterdie overcoat (232) upper surface.