Design of Guide Way /Slide Ways
DESIGN OF GUIDE WAY /SLIDE WAYS
INTRODUCTION
- The guide ways of a machine tool ensure that the machine tool operative element (e.g. saddle, cross slide, etc.) carrying the cutting tool, ( or job), move along a predetermines path which may be a straight line (path0 as in lathe and drilling machines or a circular path as in a vertical torrent lathes.
- Guide ways with sliding friction are known as slide ways
- Guide ways with rolling friction are known as anti frication ways
- Slide ways are either attached on the top of the bed or they are an integral part of the bed. Slide ways guide the movement of the slide. The slide is mounted on the sideways, sometimes, just as the railway train (I.e. slide) is one the rails (i.e. slid ways) (fig. 34.100. in a lathe, carriage and tails stock are slides. A slide carried the tools or the h job
- Slide way located and guide the slide and maintain the alignment of the guided parts (i.e. slides). The slides move thereby changing the position of the tool relative to the work pieces.
Characteristic / requirement of slide ways
1. Accuracy of movement of the slide. It depends upon the accuracy with whit the slide ways are machined. The general tolerance for straightness of machine tool slide ways is 0 to 0.02. mm per 1000 mm. the slide should move in compliance with strictly straight line ( or circular) motion without slide rotation . to maintain accuracy, the ingress of foreign matter e.g. swage must be prevented and lubrication should be adequate
2. Durability. The dies ways should retina the initial accuracy of travel of the slides over a specified period of operation. Sometime, to facilitate assembly, maintain accuracy and eliminate play between the slide ways and the slide, a gab strip is inserted in the slides
Diagram
3. Adequate load carrying capacity
4. Reduced friction between the slide and slide ways
5. Rigidity
6. Wear resistance
7. Damping capacity
8. Freedom from unnecessary restraint
9. Prevention of
INTRODUCTION
- The guide ways of a machine tool ensure that the machine tool operative element (e.g. saddle, cross slide, etc.) carrying the cutting tool, ( or job), move along a predetermines path which may be a straight line (path0 as in lathe and drilling machines or a circular path as in a vertical torrent lathes.
- Guide ways with sliding friction are known as slide ways
- Guide ways with rolling friction are known as anti frication ways
- Slide ways are either attached on the top of the bed or they are an integral part of the bed. Slide ways guide the movement of the slide. The slide is mounted on the sideways, sometimes, just as the railway train (I.e. slide) is one the rails (i.e. slid ways) (fig. 34.100. in a lathe, carriage and tails stock are slides. A slide carried the tools or the h job
- Slide way located and guide the slide and maintain the alignment of the guided parts (i.e. slides). The slides move thereby changing the position of the tool relative to the work pieces.
Characteristic / requirement of slide ways
1. Accuracy of movement of the slide. It depends upon the accuracy with whit the slide ways are machined. The general tolerance for straightness of machine tool slide ways is 0 to 0.02. mm per 1000 mm. the slide should move in compliance with strictly straight line ( or circular) motion without slide rotation . to maintain accuracy, the ingress of foreign matter e.g. swage must be prevented and lubrication should be adequate
2. Durability. The dies ways should retina the initial accuracy of travel of the slides over a specified period of operation. Sometime, to facilitate assembly, maintain accuracy and eliminate play between the slide ways and the slide, a gab strip is inserted in the slides
Diagram
3. Adequate load carrying capacity
4. Reduced friction between the slide and slide ways
5. Rigidity
6. Wear resistance
7. Damping capacity
8. Freedom from unnecessary restraint
9. Prevention of