来跟我动手做磨床（砂带机）Let’s make a Grinder

734315

发霉鸟，论坛的数据丢了几天的……转来的教程也挂鸟
来源：http://www.britishblades.com/for ... Lets-make-a-Grinder
图纸和教程打包下载
教程简单明了，不懂鸟文，Googel之！

OK folks, there hasn’t been a grinder tutorial for sometime now,whenever I post one of mine up they get a lot of interest so thought Iwould show you how to make one of these



It’s basically a KMG clone uses 1600 to 2000 x 50 belts and the greatthing about these machines is there adaptability. It’s very simple tohave a platen grinding head, contact wheel or small wheel attachment
A general overview of the construction is, all welded main frame,sliding type tool arm lockable with a single fastener, single knobtracking system with variable spring tension, main drive pulley is100mm Dia x 55mm wide
Tracking pulley is 80 mm Dia ‘crowned’ x 55mm wide platen rollers 45mmDia x 50mm wide. This will be run with a 2hp motor and three speeddrive.
For those of you that have seen one of these in action you’ll know just how good they really are!!  
As for the plan, their isn’t one, I’ve made quite a few of these nowand the major problem that I have is obtaining a regular supply ofsteel the sizes that I want, so I make them with the steel that’savailable to me,
The good news is that all the dimensions given are quite adaptable; aslong as you stick to very similar sizes you shouldn’t go wrong.
I will start of by making the main frame (the blue bit) first, It’s anall welded construction making for a very rigid frame, the disadvantageis you will need to be very careful in getting it clamped up square andspot on before you weld, as I’m sure you will appreciate it’s a realpain having to grind off welds when you get them wrong!
I intend to complete the grinder right through to fitting the motor and running it.

So here we go then let’s make a grinder

This is the steel that will be required to make the main frame and tracking arm, all materials are Bright mild steel



A = Tracking arm = 300 x 30 x 10mm
B = Tracking arm up-right = 100 x 30 x 10mm
C = Tracking hinge materials = (see separate bit on the tracking)
D = Main frame top section = 325 x 35 x 10mm (or use 1.5inch x 3/8inch)
E = Main frame side = 325 x 55 x 8mm (or 10mm )
F = Main frame side = 325 x 55 x 8mm
G = Main frame Bottom section = 390 x 35 x 10mm
H = Front up-right = 150 x 50 x 10mm
I = Front stand = 300 x 50 x 10
J = Rear up-right/bearing carrier = 150 x 65 x 10mm
K = Rear stand = 300 x 50 x 10mm
L = Rear up-right/bearing carrier = 150 x 65 x 10mm
M = Main tooling arm = 500 x 35 x 35 mm

Here is there corresponding position on the frame



Now before we get the MIG out we need to drill a few holes



I will be using SFT20 bearing for the main drive pulley, so we have todrill the up-rights (items J and L 150x65x10) measure down from thetop, 25mm (this is where the first 11.5mm hole goes), mark the centreline, and drill to suit the bearings, make the main mounting holes11.5mm and the centre hole 25mm that way it allows for a bit ofadjustment.
The tracking arm up-right (item B 100x30x10) mark the centre and measure down 15mm from the top drill (8.5mm) and tap M10
The two stands (items I and K 300x50x10) mark the centre line measurein 15mm from each end drill 6mm from one end only measure in 50mm anddrill 10mm (this is for the motor mounting frame, not shown yet)

Right now with that successfully done we move onto the next bit, thisis where we get serious, we now have to make a box around the main toolarm, to make this as easy as possible we will use the tool arm as a jig,
You will need several clamps and bits of metal to get this right, placethe top and bottom box sections opposite each other on the tool arm, wewill need a bit of clearance here so insert a couple of thin (1mm) bitsof steel between the tool arm and bottom section clamp into place, fitthe sides, position so the top is level and clamp into place, youshould have the lower section with 65mm protruding out from the back (G on the third picture down)



When happy with your clamping, tack weld in several places, removeclamps check for square and alignment and that the tool arm slides inand out easily if your happy with it weld it up, then grind and cleanup the welds on the top section,



Now we will fit the rear up-rights (item J and L) when I make these Ialways drill as a pair, when it comes to welding them into place theyneed to be spaced at 38mm apart on the inside edge this is to allow oneof the drive bearings to fit between the up-rights, this is best donewith a block of metal (I use an off-cut from the tooling arm @35mm plus3x 1mm shims making 38mm)





Position the up-rights as in the photo (above)and use the tool arm tomake sure they are in line with side A (this is the side the tool armclamps against so everything must be aligned with this side) use asquare to get them exactly up-right when you are happy with theposition weld into place, (do not remove the spacer block) should looklike this if you got it right



Next is the front up-right (item H 150x50x10) using a block position35mm back from the front of the grinder, make sure its square and weldinto place



If we are doing ok you should have something like this



Now its time for the stands (items I and K 300x50x10) measure in 100mmfrom the end (distance A in picture below) use metal block and squareto get it right when happy weld into place, now do the same with thefront stand making sure that the two 10mm holes are on the oppositeside to side A



The final bit of welding on the main frame is the tracking arm up-right
(item B 100x30x10) position A =  15mm in and B = 35mm in make sure its square and weld into position  



If progress is going to plan you should have something like this



That’s it for now folks next instalment is the tracking arm, tracking hinge and tracking pulley
Thanks Aly                                

576427321

做这鬼玩意儿比买还贵吧？

nz_x

看不懂，有高人翻译过来就最好了。

734315

做这鬼玩意儿比买还贵吧？
576427321 发表于 2010-1-21 02:11

哪能啊，卖至少得4位数才弄的到。
DIY的成本算下来也就3位数，当然有些在地方省了不必要的经费。
主要是自己攒台机子的少部分配件难搞到手。{:4_133:}

keco

学习

阳光猪

哪能啊，卖至少得4位数才弄的到。
DIY的成本算下来也就3位数，当然有些在地方省了不必要的经费。
主要是自己攒台机子的少部分配件难搞到手。{:4_133:}
734315 发表于 2010-1-21 08:55

３位数怎么可能下来呢！
光电机要多少钱？二手的现在不见得比新电机便宜。

老鼠二号

主要是配件加工需要一定的技术手段
要是直接找人加工加工费不便宜的。
随便一看至少要用到电焊，台钻，可能还要用到车床。

十三X

光买材料 不做3位数差不多

xiaochai

这焊功要到家才能焊好

寻找

买呢，方便。D呢，有感觉。
     至于费用嘛，基本上差不多！
   当然那些在加工厂上班，或者条件好的，自己D的话就便宜！

断鸿吴钩

这么一看就简单了，但精度的保证、调偏等等那就得经验说话了

xiaoddd

这个不赖！！学习了！

东北猎人

很 经典  可操作行强 不会很贵的

buyu1962

学习了

老梅子

看着不错，就是没有这么强大的动手能力！

半素

继续发吧~后面的呢

半老菜刀

做还是比买便宜的

磐石

图挂了，更看不懂了。

磐石

下载一份，真的不错，但是精度确实不太好保证

野人悍锋

高手