Cold forging die for cutting tooth forge piece

Abstract

An upper mounting groove is formed in the lower face of an upper die pier, inserting grooves are formed in the two sides of the upper die pier, the inserting grooves correspond to the upper mounting groove in position, two movable dies which are spliced with each other and just fill the inserting grooves are inserted into the inserting grooves, and the ends, located in the upper mounting groove, of the two movable dies are spliced in a matched mode; four lower die plates are arranged in the lower mounting groove, and the lower workpiece is provided with an orientation assembly for orienting the position of the upper die cavity. Four products can be produced at the same forging time, so that the production efficiency is greatly improved; and in the forging process, combined backward extrusion is adopted, respective forging pressure is dispersed, and the service life of the die is prolonged.

Description

Technical Field

[0001] This utility model relates to a cold forging die for cutting teeth forgings. Background Technology

[0002] Cutting teeth are widely used in coal mining and construction projects such as roadways, tunnels, and surface trenching. They are mainly used in conjunction with mechanized equipment such as coal mining machines, tunneling machines, and milling machines. They are cutting tools for cutting coal and rock and are frequently replaced, easily worn parts. Cutting teeth are mainly composed of an alloy structural steel tooth body and hard alloy welded to the tooth head. During operation, they bear large and uneven loads, making them highly susceptible to breakage. Cold forging ensures uniform and fine grains within the metal, preserving streamlines and improving the strength of the forging. This effectively extends the lifespan of the cutting teeth and improves the production efficiency of mining machinery.

[0003] Existing cold forging dies for cutting teeth mostly consist of a single forming cavity. A single forming cavity can only forge one cutting tooth, resulting in low efficiency. Moreover, after prolonged use, the unit extrusion pressure of a single forming cavity is high, which can easily cause the cavity to deform and be damaged, leading to a short service life for the cold forging die. Utility Model Content

[0004] The technical problem to be solved by this utility model is to address the above-mentioned issues by providing a cold forging die for cutting teeth forgings.

[0005] To solve the above-mentioned technical problems, the technical solution provided by this utility model is as follows:

[0006] A cold forging die for a cutting tooth forging includes an upper workpiece and a lower workpiece. The upper workpiece has guide posts at each of its four corners, with the other end of each guide post connected to the corresponding corner of the lower workpiece. A hydraulic cylinder is located at the center of the lower part of the upper workpiece, and an upper die block is located below the hydraulic cylinder. The upper die block has holes at each of its four corners that allow the guide posts to pass through. The holes and guide posts cooperate to guide the upper die block's movement along a consistent trajectory. A lower die block is located on top of the lower workpiece. The upper and lower die blocks correspond vertically, and the upper and lower die blocks are combined to forge the cutting tooth forging.

[0007] The upper die block has an upper mounting groove on its underside, and slots on both sides of the upper die block. The slots correspond to the upper mounting grooves. Two movable dies are inserted into each slot, and they fit together to fill the slot. Each of the two movable dies has an upper die cavity below it. The ends of the two movable dies located in the upper mounting grooves are fitted together and matched to fit within the upper mounting grooves. The misalignment between the movable dies and the openings of the upper mounting grooves is minimized. The lower die block has a lower mounting groove, and four lower templates are provided in the lower mounting groove. Each lower template has a lower die cavity. The upper and lower die cavities correspond one-to-one and are used for forging cutting teeth. The lower workpiece is provided with an orientation component for orienting the upper die cavity.

[0008] Furthermore, the orientation component includes orientation blocks at opposite ends of the movable die. The orientation blocks are partially offset to the side of the upper die block. An orientation post is provided on the lower workpiece at a position corresponding to the positioning block. The orientation block has an orientation hole that allows the orientation post to pass through. When not stamping, the orientation post is located below the orientation hole and is not inserted into the orientation hole. During stamping, the orientation post is inserted into the orientation hole, so the movable die will not be easily vibrated and fall out of the slot, greatly increasing the structural stability. When forging is completed and the movable die needs to be replaced, the movable die can easily fall out of the slot.

[0009] Furthermore, the cross-section of the directional column is circular, and the cross-section of the directional hole is circular.

[0010] Furthermore, the slot has an inverted trapezoidal cross-section, and the shape of the movable mold matches the shape of the slot, so that the inserted movable mold is more securely placed in the slot.

[0011] Furthermore, the lower mold block can be inserted into the upper mounting groove, and the outer surface of the lower mold block is in contact with the groove wall of the upper mounting groove. The insertion of the lower mold block into the upper mounting groove fixes the position of the lower mold block and presents a nested structure, which increases the bending resistance of the lower mold block.

[0012] Advantages of this utility model:

[0013] 1. The traditional single forming die cavity is set to four forming cavities (the upper die cavity and the lower die cavity correspond to each other to form one forming die cavity). Each forming die cavity forges one cutting tooth. In the same forging time, four products can be produced, which greatly improves production efficiency.

[0014] 2. The four movable dies and four lower die plates are matched and embedded in their respective upper and lower die blocks. During forging, they are combined and counter-extruded, dispersing their respective forging pressure and extending the working life of the dies. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0016] Figure 2 This is a three-dimensional structural schematic diagram of the present invention from another perspective.

[0017] Figure 3 This is a schematic diagram of the upper mounting groove and lower mounting groove of this utility model.

[0018] As shown in the figure: 11. Upper workpiece, 12. Lower workpiece, 13. Guide post, 14. Hydraulic cylinder, 15. Upper mold block, 16. Post hole, 17. Lower mold block, 18. Upper mounting groove, 19. Slot, 21. Movable mold, 2. Upper mold cavity, 23. Lower mounting groove, 24. Lower template, 26. Orienting block, 27. Orienting post, 28. Orienting hole. Detailed Implementation

[0019] The present invention will now be described in further detail with reference to the accompanying drawings.

[0020] Combined with appendix Figure 1 , Figure 2 , Figure 3 A cold forging die for a cutting tooth forging includes an upper workpiece 11 and a lower workpiece 12. Guide posts 13 are installed at the four corners of the upper workpiece 11, and the other end of the guide posts 13 is fixedly connected to the corresponding four corners of the lower workpiece 12. A hydraulic cylinder 14 is fixed at the center of the lower part of the upper workpiece 11, and an upper die block 15 is installed below the hydraulic cylinder 14. The upper die block 15 has column holes 16 at the four corners that allow the guide posts 13 to pass through. The column holes 16 and the guide posts 13 cooperate to guide the upper die block 15 to move along the same trajectory.

[0021] The lower workpiece 12 is equipped with a lower die block 17, and the upper die block 15 corresponds to the lower die block 17. The upper die block 15 and the lower die block 17 are combined to forge (stamp) a cutting tooth forging.

[0022] The upper mold block 15 has an upper mounting groove 18 on its bottom. The upper mold block 15 has slots 19 on both sides. The slots 19 are symmetrically arranged and correspond to the upper mounting groove 18 in position and are interconnected. Two movable molds 21 are inserted into each slot 19 and they fit together to fill the slot 19. The slot 19 has an inverted trapezoidal cross section. The shape of the movable mold 21 matches the shape of the slot 19, and the inserted movable mold 21 is more stable in the slot.

[0023] Both movable dies 21 have upper cavities. The ends of the two movable dies 21 located within the upper mounting groove 18 are fitted together and matched within the upper mounting groove 18. The misalignment between the movable dies 21 and the opening of the upper mounting groove 18 is minimized to reduce the outward protrusion of the lower template 24, ensuring a tight fit. The lower die block 17 has a lower mounting groove 23, within which are four lower templates 24, each with a lower die cavity. The upper and lower die cavities correspond one-to-one and are used for forging cutting teeth. The lower die block 17 can be inserted into the upper mounting groove 18, and the outer surface of the lower die block 15 contacts the groove wall of the upper mounting groove 18. The insertion of the lower die block 15 into the upper mounting groove 18 fixes its position and creates a nested structure, increasing its bending resistance. The lower workpiece 12 has an orienting component for oriented the position of the upper die cavity.

[0024] Furthermore, the orientation component includes orientation blocks 26 at opposite ends of the movable molds 21. The orientation blocks 26 are partially offset to the side of the upper mold block 15 to prevent the movable molds 21 from shifting relative to each other, thereby orienting the position of the movable molds 21. An orientation post 27 is provided on the lower workpiece 12 at a position corresponding to the positioning block 26. An orientation hole 28 is provided on the orientation block 26 to allow the orientation post 27 to pass through. When not pressing downwards, the orientation post 27 is located below the orientation hole 28 and is not inserted into it. When pressing downwards, the orientation post 27 is inserted into the orientation hole 28, so the movable molds 21 will not easily vibrate and fall out of the slot 19, greatly increasing structural stability. When forging is complete and the movable molds 21 need to be replaced, they can easily fall out of the slot 19. The orientation post 27 and the orientation hole 28 have circular cross-sections, facilitating processing.

[0025] In practical implementation, this utility model allows for easy removal and insertion of the movable mold from the slot and upper mounting groove. In actual use, the upper mold, i.e., the movable mold in this application, experiences significant wear. This detachable connection method allows for convenient replacement of the movable mold based on wear conditions. During use, the cutting teeth to be forged are sequentially placed into the lower mold cavity, and the hydraulic cylinder is activated for forging. This application can produce four products in the same forging time, greatly improving production efficiency. The combined reverse extrusion during forging disperses the forging pressure, extending the working life of the mold.

[0026] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. A cold forging die for a pick forging, comprising an upper workpiece and a lower workpiece, characterized in that: The upper workpiece has guide posts at each of its four corners, and the other end of each guide post is connected to the corresponding corner of the lower workpiece. A hydraulic cylinder is located at the center of the lower part of the upper workpiece, and an upper mold block is located below the hydraulic cylinder. The upper mold block has post holes at each of its four corners that allow the guide posts to pass through. The lower workpiece has a lower mold block on its upper part, and the upper mold block and the lower mold block are vertically aligned. An upper mounting groove is opened under the upper mold block, and slots are opened on both sides of the upper mold block. The slots are positioned corresponding to the upper mounting grooves. Two movable molds are inserted into each slot, and they fit together perfectly to fill the slots. Each of the two movable molds has an upper mold cavity below it. The ends of the two movable molds located in the upper mounting grooves are fitted together and matched to fit into the upper mounting grooves. The lower mold block has a lower mounting groove, and four lower templates are located in the lower mounting groove. Each lower template has a lower mold cavity, and the upper mold cavity and the lower mold cavity are one-to-one. The lower workpiece has an orienting component for orienting the upper mold cavity.

2. A cold forging die for a pick forging according to claim 1, characterized in that: The orientation component includes orientation blocks at opposite ends of the movable molds. The orientation blocks are partially offset to the side of the upper mold block. An orientation post is provided on the lower workpiece at a position corresponding to the positioning block. The orientation blocks have orientation holes that allow the orientation post to pass through.

3. A cold forging die for a pick forging according to claim 2, characterized in that: The cross-section of the directional column is circular, and the cross-section of the directional hole is circular.

4. The cold forging die for a cutting pick forging according to claim 1, characterized in that: The slot has an inverted trapezoidal cross-section, and the movable mold shape matches the slot shape.

5. A cold forging die for a pick forging according to claim 4, characterized in that: The lower mold block can be inserted into the upper mounting groove, and the outer surface of the lower mold block is in contact with the groove wall of the upper mounting groove.

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