A method for processing a mine wheel hub

Abstract

The invention relates to the technical field of mining wheel hub processing methods, and provides a mining wheel hub processing method, comprising the following steps: blanking and upsetting blanks; punching and bottom cutting: punching holes in the cylindrical blank of step one by a punching machine, and then cutting the bottom of the cylindrical blank after punching by a cutting machine to make it flat; first hole expansion: using a first rolling wheel of a specific mold and a first fire core rod to expand holes in the cylindrical blank obtained in step two; heating the initial sample obtained in step three; second hole expansion; the invention overcomes the shortcomings of the prior art, has a reasonable design and a compact structure, solves the problem that the existing mining wheel hub is generally sheet metal welding or partial sheet metal welding, has low processing efficiency and is easy to be damaged, and improves the processing efficiency of the mining wheel hub through a simple process method, and at the same time, the strength, tolerance, load-bearing capacity, etc. of the mining wheel hub forged by an integrated whole are superior to those of the mining wheel hub processed by sheet metal encirclement and other methods.

Description

Technical Field

[0001] The invention relates to the technical field of mine wheel hub processing methods, and in particular to a mine wheel hub processing method. Background Art

[0002] The domestically produced mining wheel hubs are generally sheet metal welded or partially sheet metal welded, usually two or three pieces are welded together, the process is complicated, both pieces need machining and other processes, and after the two or three pieces are processed, they need to be welded and polished. The whole process is very costly, and the welding workload is large, the welding rod consumption is high, and it cannot withstand high temperature and high pressure, repeated bending and temperature fluctuations, and the welds are prone to cracking. To this end, we propose a mining wheel hub processing method. Summary of the invention

[0003] 1. Technical issues to be resolved

[0004] In view of the shortcomings of the prior art, the present invention provides a method for processing a mine wheel hub, which overcomes the shortcomings of the prior art, has a reasonable design and a compact structure, and solves the problem that the existing mine wheel hub is generally sheet metal welded or partially sheet metal welded, has low processing efficiency and is easy to be damaged. The present invention improves the processing efficiency of the mine wheel hub through a simple process method, and at the same time, the strength, tolerance, and load-bearing capacity of the integrated forged mine wheel hub are superior to those of the mine wheel hub processed by sheet metal encirclement and other methods.

[0005] (II) Technical solution

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions:

[0007] A method for processing a mine wheel hub, comprising the following steps:

[0008] Step 1: Blanking and upsetting: Blank 290KG, heat to 1250℃ and then punch out the cylindrical blank in the punching die on a 1000KG air hammer;

[0009] Step 2: Punching and cutting the bottom: Punch the cylindrical blank in step 1 by a punching machine, and then use a cutting machine to cut the bottom of the punched cylindrical blank flat;

[0010] Step 3, first hole expansion: using a first rolling wheel of a specific mold and a first fire core rod, the cylindrical blank obtained in step 2 is expanded at a processing temperature of 850°C, and the hole is expanded to the initial sample after one rolling;

[0011] Step 4, heating the initial sample obtained in step 3;

[0012] Step 5, second hole expansion: using a specific mold, a second rolling wheel and a second fire core rod, the initial sample in step 4 is expanded again, and a fixed wheel hub is formed by rolling and expanding again;

[0013] Step 6: Air cooling and finishing: After the shaped wheel hub in step 5 is air cooled, it can be used directly after finishing to remove burrs.

[0014] The upsetting blank is made of 16Mn carbon manganese steel.

[0015] The temperature of the heat treatment in step 4 is 1250-1350°C.

[0016] (III) Beneficial effects

[0017] The embodiment of the present invention provides a method for processing a mine wheel hub. It has the following beneficial effects:

[0018] 1. High processing efficiency and fewer processes. Reduce the cumbersome processing links such as sheet metal welding, improve production efficiency, and the integrally forged special mining wheel hub is directly provided as a finished product, which can be directly loaded and used, which can greatly reduce the manufacturer's complex sheet metal welding process and improve production efficiency.

[0019] 2. Increase the overall reliability and safety of the equipment. Due to the use of integral forging technology, the integrally forged special mining wheel hub is superior to the mining wheel hub processed by sheet metal encirclement and other methods in terms of strength, tolerance, and load-bearing capacity. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention are clearly and completely described. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] The wheel diameter of the finished product of the mine wheel hub of the present invention is 300 mm, and the wheel shaft diameter is 70 mm; the process specifically comprises the following steps:

[0022] Step 1: Blanking and upsetting: 290KG of 16Mn carbon manganese steel with a specification of φ300mm is blanked to a cylindrical blank in a blanking die on a 1000KG air hammer after being heated to a temperature of 1250℃.

[0023] Step 2: Punching and cutting the bottom: Punch the cylindrical blank in step 1 with a punching machine, and then use a cutting machine to cut the bottom of the punched cylindrical blank flat.

[0024] Step 3, first hole expansion: Use the first rolling wheel of a specific mold and the first fire core rod to expand the cylindrical blank obtained in step 2. The processing temperature is 850°C, and the hole is expanded to the initial sample after one rolling.

[0025] Step 4: heat the initial sample obtained in step 3 to a temperature of 1250-1350° C. to improve the performance of the initial sample.

[0026] Step 5, second hole expansion: Use a specific mold, a second rolling wheel and a second fire core rod to expand the initial sample in step 4 again, and then roll and expand the hole again to form a shaped wheel hub.

[0027] Step 6: Air cooling and finishing: After the shaped wheel hub in step 5 is air cooled, it can be used directly after finishing to remove burrs.

[0028] Increase the overall reliability and safety of the equipment. Due to the use of integral forging technology, the integrally forged special mining wheel hub is superior to the mining wheel hub processed by sheet metal encirclement and other methods in terms of strength, tolerance, and load-bearing capacity. It reduces cumbersome processing links such as sheet metal welding and improves production efficiency. The integrally forged special mining wheel hub is directly provided as a finished product and can be directly loaded and used, which can greatly reduce the manufacturer's complex sheet metal welding processing process and improve production efficiency.

[0029] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0030] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A method for processing a mine wheel hub, characterized in that: The specific steps include: Step 1: Blanking and upsetting: Blank 290KG, heat to 1250℃ and then punch out the cylindrical blank in the punching die on a 1000KG air hammer; Step 2: Punching and cutting the bottom: Punch the cylindrical blank in step 1 by a punching machine, and then use a cutting machine to cut the bottom of the punched cylindrical blank flat; Step 3, first hole expansion: using a first rolling wheel of a specific mold and a first fire core rod, the cylindrical blank obtained in step 2 is expanded at a processing temperature of 850°C, and the hole is expanded to the initial sample after one rolling; Step 4, heating the initial sample obtained in step 3; Step 5, second hole expansion: Use a specific mold, a second rolling wheel and a second fire core rod to expand the initial sample in step 4 again, and then roll and expand the hole again to form a shaped wheel hub.

2. A method for processing a mine wheel hub as claimed in claim 1, characterized in that: The upsetting blank is made of 16Mn carbon manganese steel.

3. A method for processing a mine wheel hub as claimed in claim 1, characterized in that: The temperature of the heat treatment in step 4 is 1250-1350°C.

4. A method for processing a mine wheel hub as claimed in claim 1, characterized in that: The process also includes step six, air cooling and finishing: after the shaped wheel hub in step 5 is air cooled, it can be used directly after finishing to remove burrs.