Industry Applications

Truck driveshaft bore machining

Trial Cutting Report for Hole Machining of a 42CrMo Material Spline Shaft for Truck Transmissions (HRC 30–35).

Case Study: Truck Drive Shaft Hole Machining for a Customer in Shandong Province:

South Beijing Arrow Through Stone Industry and Trade Co., Ltd.
To Report on the Competition
Measure Purpose of the test: □ Wear resistance □ Resistance to breakage □ Surface quality of machined surfaces
	Option One	Option Two	Current items Card
drill Head specification and model	D 1 6.773123* d 18	D 1 6.773123* d 18	drill Drill bit
product Card	Non-standard arrow stone 1	Arrow Stone Non-standard 2	None Sismika
produce Material of the product	42 crmo	42 crmo	42 crmo
material Material hardness	HRC 30-35	HRC 30-35	HRC 30-35
Product Processing face	Spline shaft	Spline shaft	Spline shaft
Add Work method	drill to shave	drill to shave	drill to shave
Cut Cutting method	Outside Cold, cutting fluid	Outside Cold, cutting fluid	Outside Cold, cutting fluid
Measure Trial Equipment	Silver Chuan Dahe CNC Drilling	Silver Chuan Dahe CNC Drilling	Silver Chuan Dahe CNC Drilling

Spindle speed n r / nim	S 1300	S 1400	S 1300
hole deep mm	15	15	15
Feed f mm/r	300	350	260
Add Number of manufactured items	332 item	1,400 items	6 00 items
Blade Loss condition	Horizontal Blade wear, continuous chip formation	Outside Side-edge wear, continuous chip formation.	Debris, continuously Debris
Add Work Evaluation	Longevity So-so performance; efficiency has improved compared with before, but still a failure.	Processing efficiency, product lifespan, and customer recognition. . Knife test successful.	Flat Surface finish 1.6, Parallelism 0.02 mm It takes two passes to complete the finishing operation.

Cutting effect diagram

Iron Crumbly state

Invalid state

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