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Split middle die for high-strength and high-precision chain wheel

A high-precision, high-strength technology, applied in the field of powder metallurgy, can solve problems such as high mold cost and mold cracking, and achieve the effect of reducing maintenance, reducing stress concentration, and reducing overall replacement cost.

Pending Publication Date: 2021-02-12
SUZHOU NETABHAPE COMPOSITE MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In the conventional finishing mold design, the finishing mold is generally integral. On the one hand, it will cause mold cracking due to stress concentration during use. At the same time, due to the high-precision requirements of the sprocket, when the mold is worn or damaged Overall replacement, resulting in higher mold costs

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  • Split middle die for high-strength and high-precision chain wheel
  • Split middle die for high-strength and high-precision chain wheel

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Embodiment Construction

[0019] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0020] refer to figure 1 and figure 2 As shown, a split middle mold for high-strength and high-precision sprocket includes a base 1, the center of the base 1 is provided with a base cavity, and the center of the base 1 is embedded with a boss through the base cavity The mold core 2, the outer end of the boss mold core 2 is provided with a cover plate 4, the center of the cover plate 4 is provided with a cover plate inner cavity, and the center portion of the base 1 is inlaid with teeth through the cover plate inner cavity The mold core 3 is used to shape the tooth part of the sprocket, and the boss mold core 2 abuts against the side end surface of the tooth part mold core 3, and the cover plate 4 is fixedly connected to the base 1 through corresponding bolts. In this embodiment, eight M12 high-strength bolts are used to securely c...

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Abstract

The invention discloses a split middle die for a high-strength and high-precision chain wheel. The split middle die comprises a base, wherein a base inner cavity is formed in the center of the base, aboss die core is embedded in the center of the base through the base inner cavity, a cover plate is arranged at the outer side end of the boss die core, and a cover plate inner cavity is formed in the center of the cover plate; and a tooth die core is embedded in the center of the base through the cover plate inner cavity and used for shaping the tooth portion of the chain wheel, the boss die core abuts against the side end face of the tooth die core, and the cover plate is fixedly connected with the base through corresponding bolts. The die is changed into a split type, so that the risk of stress concentration is reduced, the strength of the die is improved, local replacement or maintenance can be achieved, and the cost is reduced.

Description

technical field [0001] The invention relates to the technical field of powder metallurgy, in particular to a split middle mold for high-strength and high-precision sprockets. Background technique [0002] As a transmission and force-bearing part, the sprocket has high requirements on strength and precision. When the precision of the tooth part is low, it will not mesh well with the chain during use, affecting power transmission. At the same time, local torque will be too high, which will lead to Breakage, damage, wear and other problems. [0003] In the production process of powder metallurgy parts, shaping is used as the main option to improve the accuracy of the teeth and inner diameter of the sprocket. [0004] In the conventional finishing mold design, the finishing middle mold is generally an integral type. On the one hand, it will cause mold cracking due to stress concentration during use. At the same time, due to the high-precision requirements of the sprocket, when ...

Claims

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Application Information

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IPC IPC(8): B22F3/16B22F3/24B22F5/08
CPCB22F3/16B22F3/24B22F5/08B22F2003/166
Inventor 张坤
Owner SUZHOU NETABHAPE COMPOSITE MATERIALS