Fixed method is used to clamp shaft type workpieces for post insulators

The cutting fluid shall be injected at the part where the chips are separated from the workpiece, that is, the pillar insulator shall be injected at the place with high heat and high temperature. Pay attention to check the quality of cutting fluid, especially the quality of lotion. The use of modified cutting fluid usually can not achieve the desired effect. It can be processed with disk milling cutter and finger milling cutter. Open right angle groove can be processed with three face edge milling cutter and disk groove milling cutter. Wide right angle grooves can be processed with synthetic milling cutters. The closed right angle groove is processed by end milling cutter or keyway milling cutter. It is necessary to determine the semi closed right angle groove according to the form of the closed end. The vertical arc is processed by end milling cutter or keyway milling cutter, and the horizontal arc is processed by disk milling cutter. Knife processing. It is worth noting that the keyway milling cutter can only grind the end teeth when grinding, otherwise the milling accuracy of the keyway dimension will be affected. The faces are basically the same. The clamping methods and characteristics of shaft parts are as follows. The machine vice is used to clamp the shaft workpiece, as shown in Fig. 3-31. When the machine vice is aligned and fixed on the workbench, the relative position between the fixed jaw and the upper plane of the guide rail and the workbench remains unchanged. If the diameter of the shaft changes, the axial position of the rear workpiece will change along the 45 direction, thus affecting the symmetry and size of the groove on the workpiece. Therefore, this method is suitable for single piece machining or small batch shaft diameter finishing, and requires high dimensional accuracy. Use V-shaped iron to position and clamp the shaft workpiece.

When the diameter of the workpiece changes, the axis or position of the workpiece will change along the angular bisector of the V-shaped surface. Therefore, in multi piece or batch processing, as long as the axis of the finger milling cutter or the center bisector of the disc milling cutter is aligned with the angular bisector of the V-shaped groove, the milled right angle groove will only become larger, but the alignment will not change, as shown in the figure. However, if the finger milling cutter is used for milling on the horizontal milling machine or the disk milling cutter is used for milling on the vertical elevator, when the angle bisector of the V-groove is still vertical, the diameter of the workpiece will change. Straightening will affect the symmetry of the right angle groove, as shown in the figure. For the slender shaft with a diameter of 20-60mm, the T-shaped groove of the workbench can be used to position and clamp the workpiece. The clamping method and positioning error are the same as V-shaped iron. The workpiece 5 is pressed against the V-shaped iron 8. The axial positioning plate 4 is used for axial positioning of the workpiece.

V-shaped iron can be turned and exchanged according to the workpiece diameter. The vise can be installed in a horizontal or vertical position to facilitate milling with finger and disc cutters on vertical and horizontal milling cutters. The positioning error of this method is the same as that of V-shaped iron. The post insulator is used to clamp the shaft workpiece in a fixed manner, as shown in the figure. Thus, the shaft workpiece is clamped. The axis of the workpiece is parallel to the table surface and the feed direction. After adjusting the relative position of the tool and the workpiece, the symmetry of the right angle groove is not affected by the change of the workpiece diameter. The groove depth dimension and dimension reference datum are the axes of the workpiece and are not affected by the diameter change; If the reference is the upper and lower mass lines of the workpiece, it will be affected. The clamping method of three claw self centering chuck and tailstock is introduced; Two clamping methods are shown and two clamping methods are shown. Clamping is usually used on the indexing head; Use self centering tiger. Shows the clamping method. Since both jaws can move, the centering accuracy is slightly lower than that of the three jaw self centering chuck. 3) The key point of milling is to select a suitable milling cutter and install it.

The above is the fixed method for clamping shaft workpieces of post insulators. If you have any other questions, please contact us!