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Continuous Chip with Builtup Edge

This is a chip to be avoided and is caused by small particles from the work piece becoming welded to the
tool face under high pressure and heat. The phenomenon results in a poor finish and damage to the tool.
It can be minimised or prevented by using light cuts at higher speeds with an appropriate cutting
lubricant

.

Figure 9. Continuous Chip with

Buildup Edge

Chip Breaker

A chip breaker is used to break the continuous chip into sections so that the chips cannot tangle around
the cutting tool. Grinding a groove on the tool face a few millimeters behind the cutting edge makes the
simplest form of chip breaker.

Chester UK Craftsman Lathe

19

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Содержание Craftsman

Страница 1: ...Craftsman Belt Drive Lathe Instruction Manual Chester UK Ltd Clwyd Close Hawarden Industrial Pk Hawarden Nr Chester Flintshire CH5 3PZ Tel 01244 531631 Email sales chesteruk net www chesteruk net...

Страница 2: ...eaker j Cutting Speed Feed k Cutting Fluid Lubric l Screw Cutting 9 10 11 12 13 14 15 16 17 18 19 20 21 22 7 Conclusion 23 8 Parts a Bed Assembly b Headstock Assembly c Gearbox Assembly d Apron Assemb...

Страница 3: ...mpany Export Education Model Engineering UK Sales all with dedicated sales personnel who are trained to answer your questions When buying from Chester you can be assured of a complete back up service...

Страница 4: ...face and or a dust mask if the cutting operation is dusty 3 Don t overreach Keep a proper footing and balance at all times 4 Never stand on a tool Serious injury could occur if the tool is tipped or i...

Страница 5: ...d areas and benches invite accidents 2 Don t use in a dangerous environment Don t use power tools in damp or wet locations or expose to rain Keep the work area well lit 3 Keep children etc at a safe d...

Страница 6: ...Do not remove this switch from the machine for any reason and check it s function frequently 2 Interlock switch on cutting area As soon as the pulley cover is open the machine will come to a stop with...

Страница 7: ...165 220 High Gear 300 410 550 655 900 1200 Feed Range 0 12 0 42mm rev Number of Inch Threads 40 Range of Inch Threads 4 112TPI Number of Metric Threads 27 Range of Metric Threads 0 25 7 5mm Max Tool...

Страница 8: ...Installation Plans Machine to stand Machine to floor 1 Craftsman Lathe 2 Tray 3 Stand 4 Adjustable iron spacer 5 Foundation bolt Chester UK Craftsman Lathe 7...

Страница 9: ...General Dimension Front view Top view A 717mm B 1310mm C 610mm D 1400mm E 1310mm Chester UK Craftsman Lathe 8...

Страница 10: ...most use of the limited time available on lathes it is essential that you use every chance to consolidate what you observe This type of work is largely self motivated and the drive and desire to find...

Страница 11: ...used to cut metal The spindle carrying the work is rotated whilst a cutting tool which is supported in a tool post is made to travel in a certain direction depending on the form of surface required I...

Страница 12: ...movement is of paramount importance too much at once could for instance result in breakage of the tool Figure 3 Types of Cutting Tool The type and design of the tools selected will depend on the job...

Страница 13: ...fe shaped Consequently a shearing action takes place when the work moves against the tool Figure 4 Basic Metal Cutting Theory Figure 4 shows a tool being moved against a fixed work piece When the cut...

Страница 14: ...early tool failure since the tool wedge angle is relatively weak A compromise must therefore be made between adequate strength and good cutting action Metal Being Cut Cast Iron Hard Steel Brass Medium...

Страница 15: ...d The angle at which the edge approaches the work should in theory be as large as possible but if too large chatter may occur This angle known as the Plan Approach Angle should therefore be as large a...

Страница 16: ...ools hardness and eventually its ability to cut Strength and Resistance to Shock At the start of a cut the first bite of the tool into the work results in considerable shock loading on the tool It mus...

Страница 17: ...el which has a hot hardness value of about 600 C possesses good strength and shock resistant properties It is commonly used for single point lathe cutting tools and multi point cutting tools such as d...

Страница 18: ...een the tool life and cutting speed is VTn C where V cutting speed in m min T tool life in min C a constant For high speed steel tools the value of C ranges from 0 14 to 0 1 and for carbide tools the...

Страница 19: ...bbon and is common when cutting most ductile materials such as mild steel copper and Aluminium It is associated with good tool angles correct speeds and feeds and the use of cutting fluid Figure 7 Con...

Страница 20: ...ool It can be minimised or prevented by using light cuts at higher speeds with an appropriate cutting lubricant Figure 9 Continuous Chip with Build up Edge Chip Breaker A chip breaker is used to break...

Страница 21: ...face of the work passes the cutting edge or point of the tool and is normally given in meters min To calculate the spindle Speed required Where N Spindle Speed RPM CS Cutting Speed of Metal m min d Di...

Страница 22: ...use Water It has a high specific heat but is poor in lubrication and also encourages rusting It is used as a cooling agent during tool grinding Soluble Oils Oil will not dissolve in water but can be...

Страница 23: ...s is done however and this you will be shown the process of screw cutting becomes relatively simple Fig 10 shows the arrangement in simplified form Figure 10 Screw Cutting Set up There are many differ...

Страница 24: ...e regularly carried out and that important surfaces such as slide ways are kept well protected so as to reduce wear and thus maintain good accuracy This aspect of good husbandry should be of interest...

Страница 25: ...Parts Bed Assembly Chester UK Craftsman Lathe 24...

Страница 26: ...Chester UK Craftsman Lathe 25...

Страница 27: ...Headstock Assembly Chester UK Craftsman Lathe 26...

Страница 28: ...Chester UK Craftsman Lathe 27...

Страница 29: ...Chester UK Craftsman Lathe 28...

Страница 30: ...Chester UK Craftsman Lathe 29...

Страница 31: ...Gearbox Assembly Chester UK Craftsman Lathe 30...

Страница 32: ...Chester UK Craftsman Lathe 31...

Страница 33: ...Chester UK Craftsman Lathe 32...

Страница 34: ...Apron Assembly Chester UK Craftsman Lathe 33...

Страница 35: ...Chester UK Craftsman Lathe 34...

Страница 36: ...Chester UK Craftsman Lathe 35...

Страница 37: ...Saddle Assembly Chester UK Craftsman Lathe 36...

Страница 38: ...Chester UK Craftsman Lathe 37...

Страница 39: ...Tool Post Assembly Chester UK Craftsman Lathe 38...

Страница 40: ...Chester UK Craftsman Lathe 39...

Страница 41: ...Tailstock Assembly Chester UK Craftsman Lathe 40...

Страница 42: ...Chester UK Craftsman Lathe 41...

Страница 43: ...Control Rod Assembly Chester UK Craftsman Lathe 42...

Страница 44: ...Chester UK Craftsman Lathe 43...

Страница 45: ...Headstock Cover Assembly Chester UK Craftsman Lathe 44...

Страница 46: ...Chester UK Craftsman Lathe 45...

Страница 47: ...Electric System Assembly Chester UK Craftsman Lathe 46...

Страница 48: ...Chester UK Craftsman Lathe 47...

Страница 49: ...Follow Rest Assembly Chester UK Craftsman Lathe 48...

Страница 50: ...Chester UK Craftsman Lathe 49...

Страница 51: ...Steady Rest Assembly Chester UK Craftsman Lathe 50...

Страница 52: ...Chester UK Craftsman Lathe 51...

Страница 53: ......

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