Tapered sleeve forging method

Abstract

The invention discloses a conical sleeve forging method, which belongs to the technical field of forging, and comprises the following steps: S1, selecting a steel ingot, preheating the steel ingot, carrying out main deformation and blanking treatment on the steel ingot, and then cutting off the tail of the steel ingot to eliminate cracks and inclusions; s2, an upper flat anvil is adopted for upsetting the blank, so that the blank reaches the design height needed by the conical sleeve, then the upset blank is rounded to the maximum design diameter needed by the conical sleeve, and end face flattening operation is conducted; s3, taper forming is conducted on the blank through cooperation of an upper flat anvil and a lower inclined flat anvil, and the inclination angle of the blank is gradually adjusted in the forming process; s4, a solid punch is adopted to be aligned with the end face of the blank, punching operation is conducted, and the solid punch is guaranteed to be perpendicular to the end face of the blank in the punching process; and S5, the blank is trimmed, burrs and flashes are removed, and forging of the conical sleeve is completed. The production heating number can be reduced, the energy utilization efficiency is improved, and the repair and rejection rate can be reduced.

Description

Technical Field

[0001] The invention belongs to the technical field of forging, and in particular relates to a tapered sleeve forging method. Background Art

[0002] The tapered sleeve is a common mechanical part, widely used in various mechanical equipment, especially in the fixing and protection of shaft parts. The production process of the tapered sleeve mainly involves forging, heat treatment, machining and other links. However, in the current forging process, the production of the tapered sleeve needs to go through multiple firings, and each firing needs to be adjusted according to the shape and size of the blank. During this process, tools need to be replaced frequently, which makes the overall production time longer and easily leads to irregular shapes of the blanks. Multiple forming and rework are required, which increases production costs and scrap rates. In the later stage of forging, although the required degree of deformation of the blank is relatively small, the temperature of the blank is much higher than the final forging temperature, resulting in heat waste, which not only reduces energy utilization efficiency, but also has an adverse effect on the quality of the final product.

[0003] Therefore, a tapered sleeve forging method is now needed that can reduce production fire times, improve energy efficiency and reduce rework and scrap rates. Summary of the invention

[0004] The object of the present invention is to provide a tapered sleeve forging method, which can reduce the number of production fires, improve energy utilization efficiency and reduce the rework and scrap rate.

[0005] To achieve the above purpose, the technical solution adopted by the present invention is: A method for forging a tapered sleeve comprises the following steps: Step S1: selecting a steel ingot and preheating the steel ingot, performing main deformation and blanking treatment on the steel ingot, and then cutting off the ingot tail to eliminate cracks and inclusions; Step S2: placing the pre-treated blank on the lower platform, clamping the blank with a clamp, upsetting the blank with an upper flat anvil to make the blank reach the required design height of the tapered sleeve, and then rolling the upset blank to the maximum design diameter required by the tapered sleeve and performing end surface flattening operation; Step S3: placing the rounded blank on the lower inclined flat anvil, clamping the end face of the blank with a clamp, performing taper forming on the blank by using the cooperation of the upper flat anvil and the lower inclined flat anvil, and gradually adjusting the inclination angle of the blank during the forming process; Step S4: Use a solid punch to align with the end face of the blank and perform a punching operation, and ensure that the solid punch is perpendicular to the end face of the blank during the punching process; Step S5: trimming the blank, including removing burrs and flash, to complete the forging of the tapered sleeve.

[0006] A further improvement of the technical solution of the present invention is that the angle of the lower inclined flat anvil is 28 mm for every 100 mm of length.

[0007] A further improvement of the technical solution of the present invention is that the taper drop of the conical sleeve is 32-36 mm for every 100 mm of diameter.

[0008] Due to the adoption of the above technical solution, the technical progress achieved by the present invention is: The tapered sleeve forging method of the present invention can effectively reduce the number of production fires in the entire forging process by integrating multiple processes into fewer fires, significantly improve production efficiency and energy utilization efficiency, and can accurately control the size and shape of the tapered sleeve by using the cooperation of an upper flat anvil and a lower inclined flat anvil to perform taper forming and gradually adjust the inclination angle of the blank, thereby reducing rework and scrap rates. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 It is a schematic structural diagram of a lower inclined flat anvil used in the tapered sleeve forging method of the present invention. DETAILED DESCRIPTION

[0010] The present invention is further described in detail below in conjunction with embodiments: The present invention provides a tapered sleeve forging method, comprising the following steps: Step S1: selecting a steel ingot and preheating the steel ingot, performing main deformation and blanking treatment on the steel ingot, and then cutting off the ingot tail to eliminate cracks and inclusions; Step S2: placing the pre-treated blank on the lower platform, clamping the blank with a clamp, upsetting the blank with an upper flat anvil to make the blank reach the required design height of the tapered sleeve, and then rolling the upset blank to the maximum design diameter required by the tapered sleeve and performing end surface flattening operation; Step S3: Place the rounded blank on the lower oblique flat anvil, clamp the end face of the blank with a clamp, and taper the blank by using the upper flat anvil and the lower oblique flat anvil, and gradually adjust the inclination angle of the blank during the forming process, such as Figure 1 As shown, the angle of the lower bevel anvil is 28mm for every 100mm of length; Step S4: Use a solid punch to align with the end face of the blank and perform a punching operation, and ensure that the solid punch is perpendicular to the end face of the blank during the punching process; Step S5: trimming the blank, including removing burrs and flash, and completing the forging of the tapered sleeve, wherein the tapered sleeve has a height of 32-36 mm for every 100 mm of diameter.

[0011] By integrating multiple processes into fewer fires, the number of production fires in the entire forging process can be effectively reduced, and production efficiency and energy utilization efficiency can be significantly improved. By using the upper flat anvil and the lower inclined flat anvil for taper forming and gradually adjusting the inclination angle of the billet, the size and shape of the tapered sleeve can be accurately controlled, reducing rework and scrap rates.

[0012] It is to be understood that the present invention is described by some embodiments, and it is known to those skilled in the art that various changes or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention. In addition, under the teachings of the present invention, these features and embodiments may be modified to adapt to specific circumstances and materials without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the scope of protection of the present invention.

Claims

1. A method for forging a tapered sleeve, characterized in that The following steps are involved: Step S1: selecting a steel ingot and preheating the steel ingot, performing main deformation and blanking treatment on the steel ingot, and then cutting off the ingot tail to eliminate cracks and inclusions; Step S2: placing the pre-treated blank on the lower platform, clamping the blank with a clamp, upsetting the blank with an upper flat anvil to make the blank reach the required design height of the tapered sleeve, and then rolling the upset blank to the maximum design diameter required by the tapered sleeve and performing end surface flattening operation; Step S3: placing the rounded blank on the lower inclined flat anvil, clamping the end face of the blank with a clamp, performing taper forming on the blank by using the cooperation of the upper flat anvil and the lower inclined flat anvil, and gradually adjusting the inclination angle of the blank during the forming process; Step S4: Use a solid punch to align with the end face of the blank and perform a punching operation, and ensure that the solid punch is perpendicular to the end face of the blank during the punching process; Step S5: trimming the blank, including removing burrs and flash, to complete the forging of the tapered sleeve.

2. A tapered sleeve forging method according to claim 1, characterized in that: The lower bevel anvil has a length of 28 mm for every 100 mm.

3. A tapered sleeve forging method according to claim 2, characterized in that: The cone sleeve has a taper drop of 32-36 mm per 100 mm diameter.

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