Hello
Please, I would like to have an idea of what can be happening when comparing inspection results between a CMM machine and conventional micrometer. Here at my company, we have a part (casing) which has a hole repaired making use of a bush installed in it. Just to clarify my question, I have...
Hello everybody.
Please, I need your support regarding the sketch attached. It is a simplified drawing of a shroud of turbine. Only the main features are represented in the sketch. The aim of drawing is to supply information to machine a lobule located at 30° from hole “O” at opposite position (...
Hello everybody.
Please, I need some advices about the use of markers on aeronautic parts. In the aeronautic industries the use of markers is restrict to some ones because of contamination that some products can cause on parts. At my company we make use of a marker with red wax. It is easier to...
Hi everybody.
Please, I would like to have your support on the following issue if possible:
We have a turbine case (Inconel) that reaches a temperature of 350° C ( 662°F ) when in working. There is a identification plate (0,7 mm thick) welded by Resistance Spot in the wall (1,5 mm thick) of...
Hi, I have checked some previous questions about this matter in this forum but anyway I would like to be sure.
Please, could someone confirm my following doubt and interpretation?
Is it possible to have a dimensional tolerance (diameter ) of 0,005 mm and a total runout of 0,02 mm for the same...
Hello everybody.
Please, I need your help. I have attached the main features of a part and its hard gauge to inspect the runout of internal diameter and having as datum a pattern of holes. I know that is possible to inspect it making use of a CMM machine, but we are interested on developing a...
Please, could someone help me with the following issue?
The shop floor of my company have to install inserts to obtain threads M5 x 0,8 in a 32 (quantity) threads holes (through holes) in a flange of 7,7 mm thick and approximately 260 mm external diameter. The metal base flange is already...
Hi everybody.
Please, could someone say me if the configuration shown in the drawing attached would be legal? The tolerance position frame of 0,02 mm would be conflicting with the run out of 0,05 mm? Thanks for any clarification.
Roberto
Hello everybody.
I have the following case and if someone could give me a light I would be very thankful:
At my company we are trying to perform a repair on some small casings made of Aluminum. Because of some parts display areas with corrosion, the following process is applied:
1-Clean the...
Please, could someone help me to interpret the actual meaning of the last phase of the following text in an Overhaul Manual ? English is not my native language and I have to explain it. I was confused about. For sure it is a technical issue.
The phrase is: The shaft transfers torque from the...
Hi everybody
I would like to have your opinion in the following issue: We had to weld two parts, one with 0,5 mm thick (Stainless Steel 321) and the other with 0,8 mm thick (Inco 625). The process was Resistance Spot Welding. The welding was performed making use of the following machine features...
Hello all
We have a part with two flanges. One of them is our datum X – see sketch – with a flatness of 0,02 mm max. The other opposite flange (surface) has the following indication: flatness of 0,02 and parallelism of 0,02 mm as showed in the sketch. My question is: Is it necessary to show the...
Hello everybody.
Please, could someone give me a light about the following issue?
We have a part as shown in the figure attached. An internal fillet radius of 0,3 mm is machined (cutting tool). Nowadays we are able to inspect it using an internal resin mould and projecting it making use of an...
Hi all
Please, could someone help me with the following issue?
At my company we have the procedure of protecting bearings putting them inside VCI plastic bags with its proper sealing. Before putting them inside the VCI bags, they are protected with the product Turboprotec aerosol. For some...
Hello everybody, please could someone help me with the following issue?
At our shop floor we had to bond a solid sleeve of aluminium with an external thread of M8 x 1,0 mm into a housing of an aluminium casing . The total depth is 26 mm – the same dimension as the sleeve length.
The parts were...
Please, I would like to have some information about the procedures of inspecting thread inserts installed in parts. Note – The tapped holes are blind holes.
At our shop floor we have a part with 32 holes at the flange face. These holes have inserts of nominal thread size diameter 5mm. According...
Please, could someone help me with the following issue?
My objective is to calculate the maximum and minimum gap possible (RSS case) when assembling two identical washers into an envelope (part) of 10,10 +/- 0,02mm of length (refer to the figure showing the assembly. The two washers have the...
Hello everybody !
Please, could someone help me with this following issue?
At my job we have a part to be inspected applying best fit to the datum. Below I describe the machine caracteristics and the sequence of the process. Our doubt is how to apply the function best fit on the pins using the...
