CMM Software ease of use and inspection of gears - Questions

D

dgeesaman

#1
Hello,

My company is close to buying a CMM system. I'm comparing Zeiss/Calypso, B&S / PCDMIS, and Wenzel/OpenDMIS.

I'd like your opinion on the software. We mostly inspect a broad variety of prismatic machine housings. Most of them do not have a CAD model available, and we typically inspect between 1 and 3 at a time, so for us the software ease of use is valuable and so is ease of running the CMM without a formal program. How do these packages perform in our environment?

Also, we are interested in inspecting spiral bevel and helical gears if possible on this machine. We buy them based on engineering drawings so we don't have manufacturing setup data. I'd like opinions on how the gear packages (Quindos in the case of the B&S) are for a user who is going to set up each inspection by plugging in the gearing parameters from the drawing. Our user will not be doing this every day, so it's important that it's easy to learn and document our procedures.

Thanks,

David
 
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J

jasonb067

#3
This question really gets into the preference of the users. I am assuming that you or your operator/programmer do not have a preference of BS or Zeiss. Both machines and software are good and will be capable. I prefer using BS with PC DMIS :2cents:. I do think that it is more felixable for someone writing information. I have heard many cmm operators say that they prefer using calypso on the Zeiss machine. To the person putting the part on the machine it seems from what I have heard that the Zeiss is more user friendly.

Bottom line, I think that it is up to you and your organization. If you have no one that has strong feelings either way (based on past experience) I would probably say that Zeiss with calypso is the easiest to implement for what you have generally described you will be doing.

Also, there is some laser based 3D scanning technology which you may want to consider. FARO and others which may be helpful to you.

When going with CMM the fixture is important as the machine/software so spend time and money with development there also.

Hope this helps and answers your question.
 
T

True Position

#4
For my :2cents: I'll recommend a Zeiss with Calypso. While it is not ideal for just taking quick measurements without a program, if you're making large housings and you're looking to just check a few dimension on it (say after a tool change) with Calypso you can highlight the dimensions you are interested in checking inside your master program and it will run only them saving a lot of time writing multiple programs or checking features you are not interested in. As to gear measuring, while I have never played with Gearpro, I know for helical gears/splines Zeiss recommends(possibly requires?) the rotary table so you might need to budget for that.

I will also say though, I do not have a lot of experience with PC-DMIS, but what I have used, I was glad to get back to Calypso.
 
D

dgeesaman

#5
Thanks for the feedback.

I've heard generally good things about both systems but it's never obvious how these "advantages" might apply to our organization.

Re: user preference, we have arm CMM technology that does not always support our accuracy requirements. We did have manual B&S Validators that just got too old. We also do the majority of our parts without a CAD model. So our user(s) liked the measure-as-you-go workflow in operating the arm. I saw that same workflow done on the B&S, but I haven't had a Zeiss demo yet. (I'm not a quality guy so I don't have much to offer this forum in return, save for the topic of arm CMMs - I've learned quite a lot about them and not by choice).

We have the laser attachment for the arm but frankly I don't think it's worth the time/effort to us. Contact probe scanning will be fine because we don't need and can't use the incredibly dense data sets it produces.

David
 
D

dgeesaman

#6
For my :2cents: I'll recommend a Zeiss with Calypso. While it is not ideal for just taking quick measurements without a program, if you're making large housings and you're looking to just check a few dimension on it (say after a tool change) with Calypso you can highlight the dimensions you are interested in checking inside your master program and it will run only them saving a lot of time writing multiple programs or checking features you are not interested in. As to gear measuring, while I have never played with Gearpro, I know for helical gears/splines Zeiss recommends(possibly requires?) the rotary table so you might need to budget for that.

I will also say though, I do not have a lot of experience with PC-DMIS, but what I have used, I was glad to get back to Calypso.
Some updates:

After some discussion I thought I'd mention the major differences between the various systems:

- Zeiss uses Calypso and the gearing programs are a subset of Calypso. Zeiss also requires a rotary table and uses a single probe for gear inspection.
- B&S uses PC-DMIS and there is a gearing add-on to PC-DMIS. However, for anything beyond simple gearing they will proscribe Quindos Gear software. While Quindos is certainly good software it's entirely different package. B&S / Quindos uses a star probe and traverses the gear, therefore it does not require a rotary table.
- Wenzel uses GearTec software and usually OpenDMIS if you also want general CMM software. Wenzel requires either an integral rotary table or removable rotary table.

In summary, all of these systems can do regular CMM work and convert to doing high quality gear inspection for less than the cost of a separate gear checker. Compared to a regular gear inspection CMM, the only downsides are accuracy (depending on the CMM hardware accuracy and probe setup) and less flexibility in the rotary chucks and fixtures.

Dave
 
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