panosonic copycat

jmbfestool said:
Darren1972 said:
Percussion drills are hammer drills
Click to expand...

No they are not.  Yes they are

A hammer drill is a drill for hammering only and some do have rotary stop so you can use a chisel.

A percussion drill has drill/drive function.  The drill/drive function is its main feature and the percussion is the added extra for those times when you need to drill some holes in stone/concrete/brick with out the need to get the hammer drill out.  A percussion drill can not hammer with out rotation a hammer drill can due to how they work.  They are different

The festool PD can be bought with or without percussion feature. Mine came with although I didn't want that feature the dealer gave me a good price which he couldn't do with one which didn't have percussion because he would have to order the drill in.    So I thought suppose it might come in handy.
Click to expand...
 
jmbfestool said:
Darren1972 said:
Percussion drills are hammer drills
Click to expand...

No they are not.

A hammer drill is a drill for hammering only and some do have rotary stop so you can use a chisel.

A percussion drill has drill/drive function.  The drill/drive function is its main feature and the percussion is the added extra for those times when you need to drill some holes in stone/concrete/brick with out the need to get the hammer drill out.  A percussion drill can not hammer with out rotation a hammer drill can due to how they work.  They are different

The festool PD can be bought with or without percussion feature. Mine came with although I didn't want that feature the dealer gave me a good price which he couldn't do with one which didn't have percussion because he would have to order the drill in.    So I thought suppose it might come in handy.
Click to expand...
Here in North America a hammer drill is just like a regular Chuck drill with percussion
Usually have a rate of 30000 50000 bpm
The hammering is more like a vibration(at least that's what I feel)
Drill bits for hammer drills are called  percussion bits
The other drill like the SDS drive are called rotary hammer
They usually have a lower bpm rate but much more powerful and can drill much faster
Some drill have a hammer only mode to use for chiselling
I have a Hilti TE 5  SDS
It's a rotary hammer
 
Types: "Cam-Action" (Percussion) and "Electro-Pneumatic" Edit

Lower power units are usually called "hammer drills," typically have a "cam-action" or "percussion" hammering mechanism, in which two sets of toothed gears mechanically interact with each other to hammer while rotating the drill bit. With "cam-action" drills, the chuck has a mechanism whereby the entire chuck and bit move forward and backwards on the axis of rotation, the motion is tied to the rotation of the chuck. This type of drill is often used with and without the hammer action but it is not possible to use the hammer action alone as it is the rotation over the "cams" which causes the hammer motion. These units are usually smaller and are commonly powered by cordless technology. They are not typically used for production construction drilling, but rather for occasional drilling of concrete or masonry.
 
All getting a bit silly
Hammer action is sds with or without rotation ie hammering in a nail
Percussion relies on rotation
Dave
 
Wrong my sds hammer drill rotates only eithe in hammer (percussion) mode or with out it does not chisel
 
Darren1972 said:
Wrong my sds hammer drill rotates only eithe in hammer (percussion) mode or with out it does not chisel
Click to expand...

Not wrong. I did say with or without rotary action.
Festool have their own interpretation of hammer/ percussion drill.
I have a bhc with no chisel function and a Makita with chisel function, both are sds HAMMER drills not sds PERCUSSION drills
 
In Holland your "percussion" drills are called hammer drills too, and so are SDS drills.

So there are many regional differences, also between english speaking areas.

Why don't you stick with some logic: hammering is the action of beating with one object on another.

Both "percussion" and "hammer" drills have  the hammering action. HOW you get it to hammer is not important.
 
I could say a drill is just a drill....but this may complicate the thread even more [eek]

It differs country to country as to the interpretation of the mechanical action for the drills.
Percussion - Two plates act against each other to move the masonry bit and chuck forward and back. Hence the reason the chucks have a small amount of play. Higher RPM required.

Hammer - Eccentric collar on the spindle pushes a rod forward and back while the SDS bit is 'hammered' as it is rotating providing a high 'J' or force to drill through concrete but with less RPM - below 5000.

This can be seen on EKAT
http://ekat.festool.de/login/jsp/main.jsp?doAction=start&autologin=true&userId=Kunde-FT_GB&password=Customer&design=festool

JMB has picked up Festool before in the U.K for having the terminology wrong and it has since been improved.
rg
Phil

Edit spell error/grammar

 
 
I just think its a marketing gimick for me a percussion rotary drill is a hammer rotary drill sds or not it does the same thing the festool pd drill is a hammer drill in eccence
 
Alex said:
In Holland your "percussion" drills are called hammer drills too, and so are SDS drills.

So there are many regional differences, also between english speaking areas.

Why don't you stick with some logic: hammering is the action of beating with one object on another.

Both "percussion" and "hammer" drills have  the hammering action. HOW you get it to hammer is not important.
Click to expand...
Every country has its own interpretation of what a hammer drill is
Technically they are both hammer drill
Just one is more flexible/less powerful for concrete
And the other more engineered for drilling into it
 
The PD is much more of a screwdriver then the normal percussion drills, it has slower speeds and a brake.

Doug
 
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