CN211588410U

CN211588410U - Metal precise drawing forming die

Info

Publication number: CN211588410U
Application number: CN201922448777.5U
Authority: CN
Inventors: 郭胜利
Original assignee: GRIMN Engineering Technology Research Institute Co Ltd
Current assignee: GRIMN Engineering Technology Research Institute Co Ltd
Priority date: 2019-12-30
Filing date: 2019-12-30
Publication date: 2020-09-29
Anticipated expiration: 2029-12-30

Abstract

The utility model relates to a metal accurate drawing-out forming die belongs to metal-working forming technical field. The die consists of an upper die and a lower die which are provided with semicircular through holes and are symmetrical up and down, and the upper die and the lower die are closed to form a circular through hole die cavity; the upper die and the lower die are connected together through a guide rod and a spring sleeved on the guide rod; the die cavity comprises a first deformation section, a second deformation section and a finishing section which are symmetrical, the diameter of the die cavity is gradually reduced from the first deformation section to the second deformation section, the taper of the first deformation section is larger than that of the second deformation section, and the diameter of the die cavity of the finishing section is unchanged. The utility model discloses a gradual deformation of section by section, it is even to warp, and the tissue is even, and the die cavity is hugged closely and is not spilled over the die cavity with forging the material, forges that the material circularity is good, the surface is bright and clean, surface quality is high, reduces machining volume by a wide margin, is showing the product quality and the lumber recovery that improve rare noble metal and alloy. The forming die is simple in structure, easy to assemble, low in cost, high in practicability and universality.

Description

Metal precise drawing forming die

Technical Field

The utility model relates to a metal accurate drawing forming die mainly takes shape to drawing out of noble metal such as rare noble metal tantalum, niobium, rare earth metal, tungsten, molybdenum and silver price noble metal and alloy, belongs to metal processing and takes shape technical field.

Background

The rare noble metals such as tantalum, niobium, rare earth metals, tungsten, molybdenum, silver and the like and the alloys thereof have all excellent properties, are indispensable key base materials in the fields of aerospace, aircrafts, submarines, nuclear industry, advanced equipment systems and the like, drawing and forming are main processes for forming and processing bars and pipes of the rare noble metals, the defects of surface folding, peeling, cracking and the like of a traditional free forging anvil drawing-out or throwing-out formed product are serious, the subsequent machining amount is large, the material waste is serious, and the utilization rate is low. The rare and precious metals such as tantalum, silver and the like are short in resources and expensive in price, the utilization rate of materials is increased, and the invisible waste is avoided.

Disclosure of Invention

The method aims to overcome the problems of serious defects of surface folding, peeling, cracking and the like of products formed by drawing tantalum, niobium, rare earth metals, tungsten, molybdenum, silver and other rare and noble metals and alloys thereof, large subsequent machining amount, serious material waste and low utilization rate. The utility model provides a metal accurate drawing-out forming die adopts the utility model discloses accurate drawing-out forming die, material warp defects such as even, the surface is bright and clean, do not have folding and skinning, have improved the product quality and the lumber recovery of rare noble metal and alloy rod or tubular product.

The technical scheme of the utility model as follows:

a metal precise drawing forming die comprises an upper die and a lower die which are provided with semicircular through holes and are symmetrical up and down, wherein the upper die and the lower die are closed to form a circular through hole die cavity; the upper die and the lower die are connected together through a guide rod and a spring sleeved on the guide rod; the die cavity comprises a first deformation section, a second deformation section and a finishing section, the diameter of the die cavity is gradually reduced from the first deformation section to the second deformation section, the taper of the first deformation section is larger than that of the second deformation section, and the diameter of the die cavity of the finishing section is unchanged.

Taper angle α of first deformation section of the mold cavity₁At 15-30 deg., and taper angle α of the second deformation section of the mold cavity₂Is 9-15 degrees; die cavity sidewall opening angle theta of first deformation section₁Is 30-45 degrees, and the opening angle theta of the side wall of the die cavity of the second deformation section₂Is 17 degrees to 30 degrees, and the opening angle theta of the side wall of the die cavity of the finishing section₃Is 8-17 degrees.

The guide rod is fixed on the lower die, the upper die is provided with a guide rod hole, the spring is sleeved on the guide rod, and when the upper die and the lower die are closed, the guide rod is inserted into the guide rod hole of the upper die. The upper die and the lower die are connected together through a guide rod and a spring, the spring is arranged between the upper die and the lower die and sleeved on the guide rod, and the guide rod has a positioning function, so that the center lines of the upper die and the lower die are on the same plane. The number of the guide rods is more than 4. When forging and loading (when the hammer head of the press presses the upper die), the upper die moves downwards, and the upper die and the lower die are closed to form a circular through hole; when unloading (when the press hammer head leaves the upper die), the spring bounces the upper die and feeds.

The metal precise drawing forming die further comprises a fixing rod, and the fixing rod is fixedly arranged on the upper die and the lower die.

When forging and drawing, the material gradually deforms section by section, the deformation is uniform, the structure is uniform, the opening degree of the die cavity gradually changes section by section corresponding to the first deformation section, the second deformation section and the finishing section, the die cavity is tightly attached to the forging material without overflowing out of the die cavity, the forged bar or pipe has good roundness, smooth surface and good surface quality, and the machining amount is greatly reduced.

The utility model discloses an advantage and effect do: the drawing die cavity consists of a first deformation section, a second deformation section and a finishing section, and the material gradually deforms section by section during drawing, so that local large deformation is avoided, and the deformation is uniform; the corresponding opening angle of the side wall of the die cavity gradually changes section by section, so that the cracking and the ovality of the surface of the bar or the pipe caused by the overlarge opening angle of the die cavity are avoided; meanwhile, the phenomenon that the surface of the bar or the pipe is provided with ears, folded and peeled due to the over-small opening degree of the die cavity is avoided. Adopt the utility model discloses accurate drawing out forming die, the material warp defects such as even, the surperficial is bright and clean, do not have folding and skinning, has improved the product quality and the lumber recovery of rare noble metal and alloy rod or tubular product thereof.

The utility model discloses mainly do to rare noble metal and be used for ordinary metal material, have very strong commonality. The forming die is simple in structure, easy to assemble, low in cost, high in practicability and universality.

Drawings

Fig. 1 is a schematic front view of the structure of the present invention.

Fig. 2 is a left side view of the structure of the present invention.

Description of the main reference numerals:

1 upper die 2 die cavity first deformation section I

Finishing section III of 3 die cavity second deformation section II 4 die cavity

5 spring 6 guide rod

7 lower die 8 fixing rod

9 die cavity side wall opening angle θ of finishing section Ш₃

10 deformation section П die cavity sidewall opening angle theta₂

11 deformation section I die cavity side wall opening angle theta₁

Detailed Description

To further explain the metal precise drawing forming die of the present invention, the present invention is described in detail below with reference to the accompanying drawings.

As shown in fig. 1-2, the metal precise drawing forming die of the present invention mainly comprises an upper die 1, a lower die 7, a guide rod 6, a spring 5, a fixing rod 8, etc., wherein the upper die 1 and the lower die 7 are provided with upper and lower symmetrical semicircular through holes, which are in an up-down symmetrical structure, and a circular through hole die cavity is formed when the upper die 1 and the lower die 7 are closed; the upper die 1 and the lower die 7 are connected together through a guide rod 6 and a spring 5 sleeved on the guide rod 6; the die cavity formed by combining the upper die 1 and the lower die 7 is formed by a first die cavity deformation section I2, a second die cavity deformation section II 3 and a die cavity finishing section III 4, the die cavity diameter is gradually reduced from the first die cavity deformation section I2 to the second die cavity deformation section II 3, the taper of the first die cavity deformation section I2 is greater than that of the second die cavity deformation section II 3, and the die cavity finishing section III 4 is unchanged in diameter of the die cavity.

Taper angle α of first deformation section I2 of mold cavity₁Is 15 DEG to 30 DEG, and the taper angle α of the second deformation section П 3 of the mold cavity₂Is 9-15 degrees; die cavity side wall opening angle theta of first deformation section I2 of die cavity₁Is 30 degrees to 45 degrees, and the opening angle theta of the side wall of the die cavity of the second deformation section П 3 of the die cavity₂17 to 30 degrees, die cavity side of die cavity finishing section Ш 4Wall opening angle θ₃Is 8-17 degrees.

The upper die 1 and the lower die 7 which are symmetrical up and down are connected together through a guide rod 6 and a spring 5. The guide rod 6 is fixed on the lower die 7, a guide rod hole is formed in the upper die 1, the spring 5 is sleeved on the guide rod 6, when the upper die 1 and the lower die 7 are closed, the guide rod 6 is inserted into the guide rod hole of the upper die 1, the spring 5 is arranged between the upper die 1 and the lower die 7 and sleeved on the guide rod 6, the guide rod 6 has a positioning function, the central lines of the upper die and the lower die are ensured to be on the same plane, namely the upper die and the lower die are located on the same vertical line, and the phenomenon of die. The number of the guide rods 6 is more than 4.

The metal precise drawing forming die further comprises a fixing rod 8, and the fixing rod 8 is fixedly connected to one end of the upper die 1 and one end of the lower die 7 and used for fixing and positioning the upper die and the lower die.

When forging and loading (when the hammer head of the press presses the upper die), the upper die 1 moves downwards, and the upper die and the lower die are closed to form a circular through hole; when unloading (when the press hammer leaves the upper die), the spring 5 bounces the upper die 1 for feeding.

The forging material successively passes through a first deformation section I of the die cavity, a second deformation section ii of the die cavity, and a finishing section iii of the die cavity. When forging and drawing, the material gradually deforms section by section, the deformation is uniform, the tissue is uniform, the opening degree of the die cavity corresponds to the gradual change of the first deformation section I, the second deformation section II and the finishing section III of the die cavity section by section, the die cavity and the forging material are tightly attached to each other without overflowing the die cavity, the forged bar or pipe is good in roundness, smooth in surface and good in surface quality, and the machining amount is greatly reduced.

The utility model discloses a metal precision is drawn out long forming die mainly is taken shape to drawing out of noble metal such as rare noble metal tantalum, niobium, rare earth metal, tungsten, molybdenum and silver price noble metal and alloy. The progressive deformation by sections is adopted, the deformation is uniform, the tissue is uniform, the roundness of the forged material is good, the surface is smooth and clean, the surface quality is high, the machining amount is greatly reduced, and the product quality and the yield of rare noble metals and alloys thereof are obviously improved.

Claims

1. The utility model provides a metal precision is drawn out long forming die which characterized in that: the die consists of an upper die and a lower die which are provided with semicircular through holes and are symmetrical up and down, and the upper die and the lower die are closed to form a circular through hole die cavity; the upper die and the lower die are connected together through a guide rod and a spring sleeved on the guide rod; the die cavity comprises a first deformation section, a second deformation section and a finishing section which are symmetrical, the diameter of the die cavity is gradually reduced from the first deformation section to the second deformation section, the taper of the first deformation section is larger than that of the second deformation section, and the diameter of the die cavity of the finishing section is unchanged.

2. The metal precision-elongation forming die of claim 1, wherein the taper angle α of the first deformation section of the die cavity₁Is 15 degrees to 30 degrees, and the cone angle α of the second deformation section₂Is 9-15 degrees.

3. The metal precision drawing forming die of claim 2, wherein: a cavity side wall opening angle theta of the first deformation section of the cavity₁Is 30-45 degrees, and the opening angle theta of the side wall of the die cavity of the second deformation section₂Is 17 degrees to 30 degrees, and the opening angle theta of the side wall of the die cavity of the finishing section₃Is 8-17 degrees.

4. The metal precision drawing forming die of claim 1, wherein: the guide rod is fixed on the lower die, and the upper die is provided with a guide rod hole.

5. The metal precision drawing forming die of claim 4, wherein: when the upper die and the lower die are closed, the guide rod is inserted into the guide rod hole of the upper die, so that the central lines of the upper die and the lower die are in the same plane.

6. The metal precision drawing forming die of claim 5, wherein: the number of the guide rods is more than 4.

7. The metal precision drawing forming die of claim 6, wherein: the die further comprises a fixing rod, and the fixing rod is fixed on the upper die or the lower die.