Cold heading forming die for gear product

Abstract

The utility model discloses a cold heading forming die for gear products. The cold heading forming die comprises a cutting die, a first cold heading die, a second cold heading die, a third cold heading die, a fourth cold heading die, a fifth cold heading die and a sixth cold heading die. The first cold heading die is used for primarily shaping the raw materials into products; the second cold heading die is used for heading the product; the third cold heading die is used for carrying out tooth binding and punching on the product; the fourth cold upsetting die is used for upsetting the product; the fifth cold heading die is used for trimming and blanking the product; and the sixth cold mold is used for overturning and shaping the product. Compared with original powder metallurgy, the cold heading forming die for the gear product has the advantages that the production efficiency is improved, the requirements for the tissue density and the overall strength of the product are met by using the die, the size precision and the shape precision of the gear product are ensured, the manufacturing requirement of the gear product is met, and the production safety and stability are improved.

Description

Technical Field

[0001] This utility model relates to the technical field of molds, and in particular to a cold heading mold for gear products. Background Technology

[0002] A mold is a set of molds and tools used in industrial production to obtain desired products through methods such as injection molding, blow molding, extrusion, die casting, forging, smelting, and stamping. In short, a mold is a tool used to create shaped objects; this tool is composed of various parts, and different molds are composed of different parts. It primarily achieves the shaping of objects by changing the physical state of the material being molded.

[0003] When producing planetary gears, the original production method was powder metallurgy technology. However, this method had limitations, including limited output, insufficient product density, poor stability, and inability to meet precision requirements. Utility Model Content

[0004] One objective of this invention is to provide a cold heading mold for gear products to solve the problems existing in the prior art.

[0005] To achieve this objective, the present invention adopts the following technical solution:

[0006] A cold heading die for a gear product includes a cutting die, a first cold heading die, a second cold heading die, a third cold heading die, a fourth cold heading die, a fifth cold heading die, and a sixth cold heading die. The cutting die is used to cut the raw material. The first cold heading die is used to preliminarily shape the raw material into the product. The second cold heading die is used to upset the product. The third cold heading die is used to form teeth and drill holes in the product. The fourth cold heading die is used to forge the product. The fifth cold heading die is used to trim the edges and blank the product. The sixth cold heading die is used to flip and shape the product.

[0007] As a preferred technical solution, the cutting die includes a cutting blade and a cutting mold, wherein the cutting blade moves laterally above the cutting mold.

[0008] As a preferred technical solution, the first cold heading die includes a first die housing, a first main die, and a first ejector rod. A first die back pad is installed inside the first die housing, a first punch sleeve is installed on the first die back pad, a first upper punch is inserted into the first punch sleeve, the first ejector rod is covered by the first back pad, the upper end of the first ejector rod is connected to a first lower punch, a first die core is installed inside the first main die, and the first lower punch passes through the upper end of the first die core.

[0009] As a preferred technical solution, the second cold heading die includes a second die housing, a second main die, and a second ejector rod. A second die back pad is installed inside the second die housing. A second punch sleeve is installed on the second die back pad. A second upper punch is inserted into the second punch sleeve. The lower end of the second main die is connected to the second back pad. The second ejector rod is inserted into the second back pad. The upper end of the second ejector rod is connected to a second lower punch. The second lower punch passes through the upper end of the second main die.

[0010] As a preferred technical solution, the third cold heading die includes a third die housing, a third main die, and a third ejector rod. A third die back pad is installed inside the third die housing. A third punch sleeve is installed on the third die back pad. A third upper punch is inserted into the third punch sleeve. The lower end of the third main die is connected to the third back pad. The third ejector rod is inserted into the third back pad. A third lower punch is provided at the upper end of the third ejector rod. The third lower punch passes through the upper end of the third main die. A third sleeve is fitted on the outside of the third lower punch. A third lower push pin is connected between the third sleeve and the third ejector rod. A third punch back pad is connected between the third lower punch and the third ejector rod. A third punch fixing pad is provided at the lower end of the third main die. The third punch fixing pad is located above the third punch back pad.

[0011] As a preferred technical solution, the fourth cold heading die includes a fourth die housing, a fourth main die, and a fourth ejector rod. A fourth die back pad is installed inside the fourth die housing. A fourth punch sleeve is installed on the fourth die back pad. A fourth upper punch is inserted into the fourth punch sleeve. The lower end of the fourth main die is connected to the fourth back pad. The fourth ejector rod is inserted into the fourth back pad. A fourth lower punch is provided at the upper end of the fourth ejector rod. The fourth lower punch passes through the upper end of the fourth main die. A fourth sleeve is fitted on the outside of the fourth lower punch. A fourth lower push pin is connected between the fourth sleeve and the fourth ejector rod. A fourth punch back pad is connected between the fourth lower punch and the fourth ejector rod. A fourth punch fixing pad is provided at the lower end of the fourth main die. The fourth punch fixing pad is located above the fourth punch back pad.

[0012] As a preferred technical solution, the fifth cold heading die includes a fifth die shell, a fifth main die, and a fifth ejector pin. A fifth push pin pad is installed at the upper end of the fifth die shell, and a fifth upper push pin is connected to the lower end of the fifth push pin pad. A fifth upper rear pad is provided on the outer side of the fifth upper push pin. A fifth outer sleeve is installed at the lower end of the fifth die shell, and a fifth upper sleeve is installed in the middle of the fifth outer sleeve. A fifth scrap punch is connected to the lower end of the fifth upper push pin, and the fifth scrap punch passes through the fifth upper sleeve. The fifth main die... The lower end of the mold is connected to a fifth lower rear pad. The fifth ejector rod is inserted into the fifth lower rear pad. The upper end of the fifth ejector rod is provided with a fifth lower punch. The fifth lower punch passes through the upper end of the fifth main mold. The outer side of the fifth lower punch is fitted with a fifth lower sleeve. A fifth lower push pin is connected between the fifth lower sleeve and the fifth ejector rod. A fifth punch rear pad is connected between the fifth lower punch and the fifth ejector rod. A fifth punch fixing pad is provided at the lower end of the fifth main mold. The fifth punch fixing pad is located above the fifth punch rear pad.

[0013] As a preferred technical solution, the sixth cold heading die includes a sixth die housing, a sixth main die, and a sixth ejector rod. A sixth die back pad is installed inside the sixth die housing. A sixth punch sleeve is installed on the sixth die back pad. A sixth upper punch is inserted into the sixth punch sleeve. The lower end of the sixth main die is connected to the sixth back pad. The sixth ejector rod is inserted into the sixth back pad. A sixth lower punch is provided at the upper end of the sixth ejector rod. The sixth lower punch passes through the upper end of the sixth main die. A sixth sleeve is fitted on the outside of the sixth lower punch. A sixth lower push pin is connected between the sixth sleeve and the sixth ejector rod. A sixth punch back pad is connected between the sixth lower punch and the sixth ejector rod. A sixth punch fixing pad is provided at the lower end of the sixth main die. The sixth punch fixing pad is located above the sixth punch back pad.

[0014] The beneficial effects of this utility model are as follows: It provides a cold heading forming mold for gear products. Compared with the original powder metallurgy, the cold heading forming mold for gear products greatly improves the production efficiency. By using the mold, the coiled wire is sequentially cut, shaped, upsetting, tooth punching, forging, and edge trimming, etc., to achieve the product's microstructure density and overall strength requirements, ensuring the dimensional and shape accuracy of the gear products, meeting the manufacturing needs of gear products, and improving the safety and stability of production. Attached Figure Description

[0015] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments.

[0016] Figure 1 This is a diagram illustrating the molding process of the gear product described in the embodiment (from right to left).

[0017] Figure 2 This is a cross-sectional view of the cutting die described in the embodiment;

[0018] Figure 3 This is a cross-sectional view of the first cold heading die described in the embodiment;

[0019] Figure 4 This is a cross-sectional view of the second cold heading die described in the embodiment;

[0020] Figure 5 This is a cross-sectional view of the third cold heading die described in the embodiment;

[0021] Figure 6 This is a cross-sectional view of the fourth cold heading die described in the embodiment;

[0022] Figure 7 This is a cross-sectional view of the fifth cold heading die described in the embodiment;

[0023] Figure 8 This is a cross-sectional view of the sixth cold heading die described in the embodiment.

[0024] Figures 1 to 8 middle:

[0025] 101. Cutting blade; 102. Cutting die;

[0026] 201. First die housing; 202. First main die; 203. First ejector pin; 204. First die back pad; 205. First punch sleeve; 206. First upper punch; 207. First back pad; 208. First lower punch; 209. First die core;

[0027] 301. Second die housing; 302. Second main die; 303. Second ejector pin; 304. Second die rear pad; 305. Second punch sleeve; 306. Second upper punch; 307. Second rear pad; 308. Second lower punch;

[0028] 401. Third die housing; 402. Third main die; 403. Third ejector rod; 404. Third die rear pad; 405. Third punch sleeve; 406. Third upper punch; 407. Third rear pad; 408. Third lower punch; 409. Third sleeve; 410. Third lower push pin; 411. Third punch rear pad; 412. Third punch retaining pad;

[0029] 501. Fourth die housing; 502. Fourth main die; 503. Fourth ejector rod; 504. Fourth die rear pad; 505. Fourth punch sleeve; 506. Fourth upper punch; 507. Fourth rear pad; 508. Fourth lower punch; 509. Fourth sleeve; 510. Fourth lower push pin; 511. Fourth punch rear pad; 512. Fourth punch retaining pad;

[0030] 601. Fifth die housing; 602. Fifth main die; 603. Fifth ejector pin; 604. Fifth push pin pad; 605. Fifth upper push pin; 606. Fifth upper rear pad; 607. Fifth outer sleeve; 608. Fifth upper sleeve; 609. Fifth scrap punch; 610. Fifth lower sleeve; 611. Fifth lower rear pad; 612. Fifth lower punch; 613. Fifth lower push pin; 614. Fifth punch rear pad; 615. Fifth punch fixing pad;

[0031] 701. Sixth die housing; 702. Sixth main die; 703. Sixth ejector rod; 704. Sixth die rear pad; 705. Sixth punch sleeve; 706. Sixth upper punch; 707. Sixth rear pad; 708. Sixth lower punch; 709. Sixth sleeve; 710. Sixth lower push pin; 711. Sixth punch rear pad; 712. Sixth punch retaining pad;

[0032] 8. Products. Detailed Implementation

[0033] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0034] like Figures 1 to 8 As shown, in this embodiment, a cold heading mold for a gear product includes a cutting mold, a first cold heading mold, a second cold heading mold, a third cold heading mold, a fourth cold heading mold, a fifth cold heading mold, and a sixth cold heading mold. The cutting mold is used to cut the raw material; the first cold heading mold is used to initially shape the raw material into product 8; the second cold heading mold is used to upset product 8; the third cold heading mold is used to form teeth and drill holes in product 8; the fourth cold heading mold is used to forge product 8; the fifth cold heading mold is used to trim edges and blank product 8; and the sixth cold heading mold is used to flip and shape product 8.

[0035] The more specific structure of each production mold section is as follows.

[0036] The cutting die includes a cutting blade 101 and a cutting mold 102, with the cutting blade 101 moving laterally above the cutting mold 102.

[0037] The first cold heading die includes a first die housing 201, a first main die 202, and a first ejector rod 203. A first die back pad 204 is installed inside the first die housing 201. A first punch sleeve 205 is installed on the first die back pad 204. A first upper punch 206 is inserted into the first punch sleeve 205. The first ejector rod 203 is covered by a first back pad 207. A first lower punch 208 is connected to the upper end of the first ejector rod 203. A first mold core 209 is installed inside the first main die 202. The first lower punch 208 passes through the upper end of the first mold core 209.

[0038] The second cold heading die includes a second die housing 301, a second main die 302, and a second ejector rod 303. A second die back pad 304 is installed inside the second die housing 301. A second punch sleeve 305 is installed on the second die back pad 304. A second upper punch 306 is inserted into the second punch sleeve 305. A second back pad 307 is connected to the lower end of the second main die 302. The second ejector rod 303 is inserted into the second back pad 307. A second lower punch 308 is connected to the upper end of the second ejector rod 303. The second lower punch 308 passes through the upper end of the second main die 302.

[0039] The third cold heading die includes a third die housing 401, a third main die 402, and a third ejector rod 403. A third die back pad 404 is installed inside the third die housing 401. A third punch sleeve 405 is installed on the third die back pad 404, and a third upper punch 406 is inserted into the third punch sleeve 405. A third back pad 407 is connected to the lower end of the third main die 402, and the third ejector rod 403 is inserted into the third back pad 407. A third lower punch is provided at the upper end of the third ejector rod 403. The third lower punch 408 passes through the upper end of the third main mold 402. The outer side of the third lower punch 408 is fitted with a third sleeve 409. The third sleeve 409 and the third ejector rod 403 are connected by a third lower pusher 410. The third lower punch 408 and the third ejector rod 403 are connected by a third punch rear pad 411. The lower end of the third main mold 402 is provided with a third punch fixing pad 412, which is located above the third punch rear pad 411.

[0040] The fourth cold heading die includes a fourth die housing 501, a fourth main die 502, and a fourth ejector rod 503. A fourth die back pad 504 is installed inside the fourth die housing 501. A fourth punch sleeve 505 is installed on the fourth die back pad 504. A fourth upper punch 506 is inserted into the fourth punch sleeve 505. A fourth back pad 507 is connected to the lower end of the fourth main die 502. The fourth ejector rod 503 is inserted into the fourth back pad 507. A fourth lower punch is located at the upper end of the fourth ejector rod 503. The fourth lower punch 508 passes through the upper end of the fourth main mold 502. The fourth lower punch 508 is fitted with a fourth sleeve 509. The fourth sleeve 509 is connected to the fourth ejector rod 503 by a fourth lower pusher 510. The fourth lower punch 508 is connected to the fourth ejector rod 503 by a fourth punch rear pad 511. The lower end of the fourth main mold 502 is provided with a fourth punch fixing pad 512, which is located above the fourth punch rear pad 511.

[0041] The fifth cold heading die includes a fifth die housing 601, a fifth main die 602, and a fifth ejector pin 603. A fifth ejector pin pad 604 is installed at the upper end of the fifth die housing 601. A fifth upper ejector pin 605 is connected to the lower end of the fifth ejector pin pad 604. A fifth upper rear pad 606 is provided on the outer side of the fifth upper ejector pin 605. A fifth outer sleeve 607 is installed at the lower end of the fifth die housing 601. A fifth upper sleeve 608 is installed in the middle of the fifth outer sleeve 607. A fifth scrap punch 609 is connected to the lower end of the fifth upper ejector pin 605. The fifth scrap punch 609 passes through the fifth upper sleeve 608. The lower end of the fifth main die 602 is connected to... A fifth lower rear pad 611 is attached, and a fifth ejector rod 603 is inserted into the fifth lower rear pad 611. A fifth lower punch 612 is provided at the upper end of the fifth ejector rod 603. The fifth lower punch 612 passes through the upper end of the fifth main mold 602. A fifth lower sleeve 610 is sleeved on the outside of the fifth lower punch 612. A fifth lower push pin 613 is connected between the fifth lower sleeve 610 and the fifth ejector rod 603. A fifth punch rear pad 614 is connected between the fifth lower punch 612 and the fifth ejector rod 603. A fifth punch fixing pad 615 is provided at the lower end of the fifth main mold 602. The fifth punch fixing pad 615 is located above the fifth punch rear pad 614.

[0042] The sixth cold heading die includes a sixth die housing 701, a sixth main die 702, and a sixth ejector rod 703. A sixth die back pad 704 is installed inside the sixth die housing 701. A sixth punch sleeve 705 is installed on the sixth die back pad 704, and a sixth upper punch 706 is inserted into the sixth punch sleeve 705. A sixth back pad 707 is connected to the lower end of the sixth main die 702. The sixth ejector rod 703 is inserted into the sixth back pad 707, and a sixth lower punch is located at the upper end of the sixth ejector rod 703. The sixth lower punch 708 passes through the upper end of the sixth main mold 702. The outer side of the sixth lower punch 708 is fitted with a sixth sleeve 709. The sixth sleeve 709 and the sixth ejector rod 703 are connected by a sixth lower pusher 710. The sixth lower punch 708 and the sixth ejector rod 703 are connected by a sixth punch rear pad 711. The lower end of the sixth main mold 702 is provided with a sixth punch fixing pad 712, which is located above the sixth punch rear pad 711.

[0043] By using high-precision parts forming equipment and high-precision molds, product 8 is ensured to meet the precision dimensional requirements. When using the molds, the coiled wire is subjected to a series of processing steps such as cutting, shaping, upsetting, tooth binding, forging, and edge trimming to finally obtain the required gear shape. In addition, through the cooperation of the equipment and molds, the dimensional and shape accuracy of gear product 8 is ensured, meeting the manufacturing requirements of high-end gear product 8. The entire cold heading forming process is highly automated, reducing manual operation and improving the safety and stability of production.

[0044] It should be stated that the above-described specific embodiments are merely preferred embodiments of this utility model and the technical principles applied thereto. Within the scope of the technology disclosed in this utility model, any variations or substitutions that are easily conceived by those skilled in the art should be covered within the protection scope of this utility model.

Claims

1. A cold-upsetting forming die for a gear product, characterized by, The application relates to a cold heading die set, which comprises a cutting die, a first cold heading die, a second cold heading die, a third cold heading die, a fourth cold heading die, a fifth cold heading die and a sixth cold heading die; the cutting die is used for cutting raw materials; the first cold heading die is used for initially shaping the raw materials into products; the second cold heading die is used for upsetting the products; the third cold heading die is used for tooth bundling and punching of the products; the fourth cold heading die is used for upsetting the products; the fifth cold heading die is used for edge cutting and material falling of the products; and the sixth cold heading die is used for overturning and shaping the products.

2. A cold heading forming die for a gear product according to claim 1, characterized in that, The cutting die comprises a cutting knife and a cutting die, and the cutting knife moves transversely above the cutting die.

3. A cold heading die for a gear product according to claim 1, wherein The first cold heading die comprises a first punch outer shell, a first main die and a first ejection rod, a first punch back pad is arranged in the first punch outer shell, a first punch pin sleeve is arranged on the first punch back pad, a first upper punch pin is inserted into the first punch pin sleeve, the outer side of the first ejection rod is covered with a first back pad, a first lower punch pin is connected to the upper end of the first ejection rod, a first die core is arranged in the first main die, and the first lower punch pin passes through the upper end of the first die core.

4. A cold heading die for a gear product as defined in claim 1, wherein The second cold heading die comprises a second punch outer shell, a second main die and a second ejection rod, a second punch back pad is arranged in the second punch outer shell, a second punch pin sleeve is arranged on the second punch back pad, a second upper punch pin is inserted into the second punch pin sleeve, a second back pad is connected to the lower end of the second main die, the second ejection rod is inserted into the second back pad, a second lower punch pin is connected to the upper end of the second ejection rod, and the second lower punch pin passes through the upper end of the second main die.

5. A cold heading forming die for a gear product according to claim 1, wherein The third cold heading die comprises a third punch outer shell, a third main die and a third ejection rod, a third punch back pad is arranged in the third punch outer shell, a third punch pin sleeve is arranged on the third punch back pad, a third upper punch pin is inserted into the third punch pin sleeve, a third back pad is connected to the lower end of the third main die, the third ejection rod is inserted into the third back pad, a third lower punch pin is arranged at the upper end of the third ejection rod, the third lower punch pin passes through the upper end of the third main die, a third sleeve tube is sleeved on the outer side of the third lower punch pin, a third lower push pin is connected between the third sleeve tube and the third ejection rod, a third punch pin back pad is connected between the third lower punch pin and the third ejection rod, a third punch pin fixed pad is arranged at the lower end of the third main die, and the third punch pin fixed pad is above the third punch pin back pad.

6. A cold heading die for a gear product as defined in claim 1, wherein The fourth cold heading die comprises a fourth die shell, a fourth main die and a fourth ejector rod, a fourth die back pad is arranged in the fourth die shell, a fourth punch sleeve is arranged on the fourth die back pad, a fourth upper punch is inserted into the fourth punch sleeve, a fourth back pad is connected to the lower end of the fourth main die, the fourth ejector rod is inserted into the fourth back pad, a fourth lower punch is arranged on the upper end of the fourth ejector rod, the fourth lower punch penetrates through the upper end of the fourth main die, a fourth sleeve tube is sleeved on the outer side of the fourth lower punch, a fourth lower push pin is connected between the fourth sleeve tube and the fourth ejector rod, a fourth punch back pad is connected between the fourth lower punch and the fourth ejector rod, a fourth punch fixing pad is arranged on the lower end of the fourth main die, and the fourth punch fixing pad is arranged above the fourth punch back pad.

7. A cold heading die for a gear product as defined in claim 1, wherein The fifth cold heading die comprises a fifth die shell, a fifth main die and a fifth ejector rod, a fifth push pin pad is arranged on the upper end of the fifth die shell, a fifth upper push pin is connected to the lower end of the fifth push pin pad, a fifth upper back pad is arranged on the outer side of the fifth upper push pin, a fifth outer sleeve tube is arranged on the lower end of the fifth die shell, a fifth upper sleeve tube is arranged on the middle part of the fifth outer sleeve tube, a fifth waste punch is connected to the lower end of the fifth upper push pin, the fifth waste punch penetrates through the fifth upper sleeve tube, a fifth lower back pad is connected to the lower end of the fifth main die, the fifth ejector rod is inserted into the fifth lower back pad, a fifth lower punch is arranged on the upper end of the fifth ejector rod, the fifth lower punch penetrates through the upper end of the fifth main die, a fifth lower sleeve tube is sleeved on the outer side of the fifth lower punch, a fifth lower push pin is connected between the fifth lower sleeve tube and the fifth ejector rod, a fifth punch back pad is connected between the fifth lower punch and the fifth ejector rod, a fifth punch fixing pad is arranged on the lower end of the fifth main die, and the fifth punch fixing pad is arranged above the fifth punch back pad.

8. A cold heading die for a gear product as defined in claim 1, wherein The sixth cold heading die comprises a sixth die shell, a sixth main die and a sixth ejector rod, a sixth die back pad is arranged in the sixth die shell, a sixth punch sleeve is arranged on the sixth die back pad, a sixth upper punch is inserted into the sixth punch sleeve, a sixth back pad is connected to the lower end of the sixth main die, the sixth ejector rod is inserted into the sixth back pad, a sixth lower punch is arranged on the upper end of the sixth ejector rod, the sixth lower punch penetrates through the upper end of the sixth main die, a sixth sleeve tube is sleeved on the outer side of the sixth lower punch, a sixth lower push pin is connected between the sixth sleeve tube and the sixth ejector rod, a sixth punch back pad is connected between the sixth lower punch and the sixth ejector rod, a sixth punch fixing pad is arranged on the lower end of the sixth main die, and the sixth punch fixing pad is arranged above the sixth punch back pad.

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