For details, please refer to the PDF of the fourth issue of Modern Parts in 2007 or the bottom of the download page.
At present, a large amount of lightweight materials such as aluminum alloys are used for components such as automobile engines. Based on the characteristics of lightweight materials, Unimog has introduced numerous solutions for aluminum alloy processing, improving the customer's process flow, reducing processing costs, further improving processing efficiency and greatly improving customers' presence in the market. Competitiveness.
With the rapid development of automotive technology, the processing precision requirements of automotive parts are also increasing. In the processing of automotive steering gear components, the accuracy of the spool valve is the most stringent. To ensure its high precision, we can finally ensure the smooth and accurate steering of the car. As a manufacturer of customized PCD tools for high quality customers in Europe, Unimog Co., Ltd. has successfully provided low cost and high efficiency optimization solutions to its customers through close cooperation with customers.
Difficulties in the processing of the steering valve spool and the original process analysis ...
A processing technique is analyzed as follows:
(1) High-speed steel twist drills are pre-drilled with a bottom hole of f12.7mm.
(2) Carbide straight groove reamer hinged hole of f13.7mm.
(3) Carbide straight groove reamer hinged hole of f13.8mm.
(4) Carbide straight groove reamer hinged hole of f13.9mm.
(5) Single-blade belt guide bar f14mm file, using carbide inserts, cutting speed n=800r/min, Fn=0.1mm/r.
It is not difficult to see that in order to ensure the accuracy of the hole, the customer uses multiple reaming methods for processing. In this way, it is necessary to slow down the processing cycle and become a bottleneck process on the production line. At the same time, due to the use of cemented carbide inserts for finishing, the processing quality is not very stable, and the surface roughness Ra is guaranteed to be 0.24 mm and the roundness is 0.004 mm. Under the premise of diameter f14+0.01 mm, the tool life is generally around 1000 pieces.
Unimog's optimization program based on the material, tolerances, spool hole structure, machine tool spindle runout, machine tool fixture and cutting fluid analysis, combined with Unimog's technology, we designed a spiral diamond hinge The knife is equipped with a UM adjustable handle (see Figure 2). The spiral diamond reamer is a patented product of Unimog Co., Ltd.
Figure 2 Spiral diamond reamer has proved that the program has the following advantages:
......
Unimog optimizes the chart of the two process schemes. Comparing the two schemes, the two tools of Unimog replace the five original customers. Processing effect: the roundness is within 0.003mm (100% full inspection), the surface roughness reaches Ra=0.14mm, the diameter is within f14+0.01 mm, and the production tact is reduced to about 1/3 of the original. While ensuring the above requirements, it is possible to stably process 100,000 holes.
At present, a large amount of lightweight materials such as aluminum alloys are used for components such as automobile engines. Based on the characteristics of lightweight materials, Unimog has introduced numerous solutions for aluminum alloy processing, improving the customer's process flow, reducing processing costs, further improving processing efficiency and greatly improving customers' presence in the market. Competitiveness.
With the rapid development of automotive technology, the processing precision requirements of automotive parts are also increasing. In the processing of automotive steering gear components, the accuracy of the spool valve is the most stringent. To ensure its high precision, we can finally ensure the smooth and accurate steering of the car. As a manufacturer of customized PCD tools for high quality customers in Europe, Unimog Co., Ltd. has successfully provided low cost and high efficiency optimization solutions to its customers through close cooperation with customers.
Difficulties in the processing of the steering valve spool and the original process analysis ...
A processing technique is analyzed as follows:
(1) High-speed steel twist drills are pre-drilled with a bottom hole of f12.7mm.
(2) Carbide straight groove reamer hinged hole of f13.7mm.
(3) Carbide straight groove reamer hinged hole of f13.8mm.
(4) Carbide straight groove reamer hinged hole of f13.9mm.
(5) Single-blade belt guide bar f14mm file, using carbide inserts, cutting speed n=800r/min, Fn=0.1mm/r.
It is not difficult to see that in order to ensure the accuracy of the hole, the customer uses multiple reaming methods for processing. In this way, it is necessary to slow down the processing cycle and become a bottleneck process on the production line. At the same time, due to the use of cemented carbide inserts for finishing, the processing quality is not very stable, and the surface roughness Ra is guaranteed to be 0.24 mm and the roundness is 0.004 mm. Under the premise of diameter f14+0.01 mm, the tool life is generally around 1000 pieces.
Unimog's optimization program based on the material, tolerances, spool hole structure, machine tool spindle runout, machine tool fixture and cutting fluid analysis, combined with Unimog's technology, we designed a spiral diamond hinge The knife is equipped with a UM adjustable handle (see Figure 2). The spiral diamond reamer is a patented product of Unimog Co., Ltd.
Figure 2 Spiral diamond reamer has proved that the program has the following advantages:
......
Unimog optimizes the chart of the two process schemes. Comparing the two schemes, the two tools of Unimog replace the five original customers. Processing effect: the roundness is within 0.003mm (100% full inspection), the surface roughness reaches Ra=0.14mm, the diameter is within f14+0.01 mm, and the production tact is reduced to about 1/3 of the original. While ensuring the above requirements, it is possible to stably process 100,000 holes.
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