Get high-precision CNC camshaft machining with in-house grinding, тесни допустими отклонения(up to ±0.01 mm), и ISO 9001:2015 certified quality.
Tops Precision is an ISO-certified manufacturing company in China. We bring a wealth of experience and a strong reputation of more than a decade. We machine camshafts from blank to finished parts.
Our process is completely in-house. Each step is planned and controlled to ensure the camshaft meets specification without compromising on quality standards. With a strong supply chain, we support OEM manufacturers from all over the world.
Machining a camshaft takes more than cutting it to size. It calls for precision control of the cam profile, proper alignment of all journals, and reproducible surface finish. We handle all this using simple processes, квалифицирани оператори, and the right machinery.
If at any time there is a problem, we address it right away. По този начин, we don't pass faults down the chain. не, not only is the final stage of a camshaft checked.
С върхова прецизност, we employ a series of precision CNC machining techniques to produce camshafts. Each technique allows us to manage size, форма, and finish along the way. The key techniques that we use are:
Each of our techniques is part of a controlled process. This allows us to produce camshafts that are exact in measurements and reliable in use.
Our camshaft machining process is divided into obvious stages. Each stage serves a purpose. None of the steps is skipped or rushed. This is how we ensure our strict quality and consistency.
We start by rough-turning the camshaft. This eliminates most of the excess material. We manufacture the bearing journals, gear ends, cam lobes, and other critical sections. The idea is to get the shape close without going to the final size.
At this point in the process (during rough machining), we don’t cut the part to the final size yet. We intentionally leave a little extra material on the camshaft.
The part is inspected before it goes forward. That includes runout and general alignment. If something is wrong, it is fixed before the next setting.
Semi-finishing typically includes an early grinding step. This moves the cam lobes and other features closer to their final shape. It is also useful to relieve stress remaining from rough turning.
В този момент, we are not going after final tolerances. We are preparing the profiles and surfaces to finish grinding. The machines remove a small amount of material to smooth out the earlier cuts. This step is necessary for proper stability. It eliminates the heat distortion and ensures the part will not move or warp.
Here is the final size of the camshaft. The machines are prepared for fine-tolerance work. Cam profiles are machined to the exact lift and timing values. We utilize correct wheels and speeds to keep the part cool and prevent any burn or warping.
When the grinding is completed, the journals and lobes are polished. This provides the proper surface for oil flow and wear resistance. It also minimizes noise and friction, allowing efficient engine working.
Cam surface grinding is the most significant in the process. Here’s how we grind CAM shafts precisely at our factory.
Each camshaft is installed by means of reference points on bearing journals and gear faces. These references keep the cam lobes ground accurately in the proper position and at the correct angle.
Long shafts are supported on steady rests and supporting rollers. This will not allow for movement or bending during grinding. Any slight shaft movement during grinding affects the cam profile. All steps are checked before grinding begins. That includes wheel condition, tool setup, and shaft alignment.
The cam lobes are ground in a two-pass operation. The first pass is rough. It gets rid of most of the material. The second pass is fine. It's the profile that gives final shape.
We check how much the grinding wheel wears down and adjust the process while the job runs. This maintains the cam shape of all lobes. When the cycle is complete, the cam curve is compared to both a profile gauge and a digital reader. If the shape is not quite right, we immediately reshape it.
Cam machining requires more than just standard machines. It requires well-established processes and good controls. We take great care to control every step to make sure the final part is correct.
We operate cam grinders with controls, and our machines keep the shaft and wheel synchronized. Скорост, фураж, and pressure are tightly controlled.
We generally use hard wheels such as CBN. These are well-formed and work cleanly. We also check the proper flow of coolant. This prevents heat-related problems and provides a neat finish.
Each machine is inspected regularly as part of our SOPs. We do not wait for things to fail. If something is out of kilter, we service or replace it before it becomes a problem.
Quality is not an afterthought at our facility. Every step is quality-controlled before the part progresses. These measures include runout, диаметър, and profile shape checks.
Final inspections include cam lift, journal size, и повърхностно покритие. We understand the nature of a good camshaft and what it requires to function. If a part fails, it’s sorted, not shipped.
No matter how smooth the process is, things can go wrong even though. С върхова прецизност, we eliminate issues at the source.
Понякога, a journal is out of round. This can occur if the wheel is worn or the shaft has shifted during setup. We inspect the tooling and reset the fixturing. Then we regrind as needed.
If the cam lift is off, then it is most likely the master form or wheel profile. We shut down the machine, check the form, and dress the wheel. We never leave bad parts in operation.
Cam base circle bounce is typically related to a worn coupling and setup fault. We take the setup apart, inspect the components, and replace the parts that are worn and out of alignment. Only when the runout is corrected do we return to production.
С върхова прецизност, surface finish matters just as much as the camshaft shape. Гладък, even surface keeps friction low, helps oil flow, and avoid parts from wearing too early. We apply the right finish depending on what the camshaft is made of and where it’s going to be used.
We use polishing after the grinding to remove fine marks. It leaves the journals and cam lobes smooth and ready for use. It also helps reduce engine noise and wear and tear.
A clean and even surface is created directly during the final grinding process. It’s ideal when the camshaft doesn’t need extra finishing. It provides sufficient smoothness for effective oil control and long-term use.
For higher-end camshafts, we use a superfine finish. It gives a surface near-mirror state, helping with wear and keeping parts cool under load.
If a camshaft needs extra treatment like nitriding and coating, we stop at the right finish. This helps the next step bond better and last longer. We make sure the surface is prepped just right.
At our factory, we check every finish from start to end. По този начин, the camshaft leaves our shop ready to run, гладко, чисти, and perform long-lasting.
да, we can machine camshafts to match custom lift, timing, and shape requirements. Whether it’s for standard engines or performance builds, we follow your exact profile data.
Като цяло, we work with стомана, легирана стомана, неръждаема стомана, и чугун. If you have a specific material in mind, just let us know. Our team will confirm if it’s suitable for your design.
да, we support both small runs and one-off prototypes. We apply the same precision process no matter the quantity you need.
We hold tolerances up to ±0.01 mm on journals and lobes. Each camshaft is inspected at every step to make sure the final part meets spec.
да, all our camshafts are fully finished, полиран, and ready for use. We also check alignment, lift, and surface finish before final delivery.