CA6 140 Bed and Slide Rail Structure

Transmission of main components of ca6 140 horizontal lathe, such as four bed seats, intermediate slide plate and square tool rest.

1. Bed saddle

The Ca6 140 bed saddle 1 is installed on the guide rails A and B of the bed and can move longitudinally along the guide rails of the bed. A is a prismatic guide rail, the shape of which is equivalent to two right angles of an isosceles right triangle. B is the plane guide rail. The front pressure plate 14 and the rear pressure plate 15 are installed at the front and rear of the bed saddle. The gap between the pressure plate and the guide rail surface under the bed should be less than 0.04mm, and the gap can be adjusted after the pressure plate is worn. The bed saddle is H-shaped, and the end face of its guide rail is equipped with a scraper made of fine felt 16. The lathe is fixed on the end face of the saddle with steel plate 17 and screws. When the bed saddle moves, the scraper scrapes off the debris, such as chips and dust, falling on the surface of the bed guide rail to prevent the debris from invading between the guide rail surfaces, thus reducing the wear of the guide rail.

2. Middle skateboard

The sliding plate 3 in ca6 140 can move laterally along the dovetail guide rail at the upper part of the saddle L, and the middle sliding plate is driven by the lateral feed screw 2. In order to adjust the clearance, the nut consists of a right nut 1 1 and a left nut 13. If the clearance is too large after the nut is worn, the clearance can be adjusted as follows: first loosen the screw 4 of the left nut 13, and then turn the screw 5 to pull the wedge 12 upward. At this time, the left nut 13 moves to the left to reduce the gap between the nut and the lead screw. After adjusting the clearance, fix the left nut 13 with screw 4.

The clearance of dovetail guide rail of middle slide plate is adjusted with insert 18. By screwing the adjusting screws 19 at the front and rear ends of the blade, the lathe can adjust the position of the blade 18 in the horizontal tool rest, thus realizing the adjustment of the clearance. The horizontal movement of the middle sliding dial is 0.05 mm per grid.

3. turntable.

The ca6 140 turntable l is installed on the upper plane of the middle slide plate. Its lower centering cylindrical surface H is installed in the hole H of the middle slide plate, and the turntable 1 and the small slide plate 2 can rotate to a certain angular position on the middle slide plate. The maximum adjustable angle of the turntable is 90. After the position of the turntable is adjusted, it is necessary to tighten the nut 18 and the T-screw 19 with the nut to fix the turntable on the middle slide plate.

4. Small skateboard

Ca6 140 small sliding plate 2 is installed on the dovetail guide rail of turntable 1. When the turntable rotates to a certain angle and is adjusted, the short conical surface can be rotated by moving the small sliding plate by hand. There is also a dial on the handle shaft of the small slide plate, and the movement of each dial is 0. 1 mm, and the clearance of the small slide rail of the lathe is adjusted by the insert 17.

5. Square tool rest

The Ca6 140 square tool rest is installed on the small slide plate 2. Four turning tools (or four groups of tools) can be clamped on the four sides of the square tool holder. The square tool holder body 4 can rotate at four positions (at an interval of 90 degrees), so that the four turning tools installed in this way can participate in cutting in turn. The working principles of indexing, positioning and clamping of the square tool rest are as follows. When indexing, first, the handle 8 is rotated counterclockwise so that the thread between the handle and the shaft 12 moves the handle upward, which loosens the square tool holder body 4. At the same time, the handle 8 drives the sleeve 9 to rotate through the pin 14, and the sleeve 9 has a spline hole to match the spline of the sleeve 10, and the lower end of the sleeve 10 has a unidirectional inclined end tooth, which contacts the end cam 7. Turn counterclockwise. Lathe When the end cam 7 turns below the "wide tail" of the locating pin 16, the end cam? Pull the locating pin 16 out of the locating hole with the upper inclined plane. When the end cam rotates, the handle 8 continues to rotate counterclockwise. When the lower surface in the notch touches the indexing pin 20, the end cam 7 drives the square tool holder body 4 to rotate counterclockwise. When the square tool holder is rotated to 90 degrees, the coarse positioning steel ball 5 is pressed into another positioning hole 3 on the small slide plate 2 under the action of the spring 6, so that the square tool holder body 4 can be roughly positioned. At this time, the operator of ca6 140 changed the handle 8 to rotate clockwise, so the sleeve 9 and 10 and the end cam 7 also changed to rotate clockwise. When the end cam 7 rotates until its upper face is separated from the R-shaped tail of the positioning pin 16, the positioning pin 16 is pressed into another positioning hole of the small slide plate 2 by the spring 15, and the square tool holder body 4 is accurately positioned. When the end cam 7 rotates clockwise until the other side of the notch touches the indexing pin 20, the end cam 7 cannot continue to rotate because the square tool holder 4 has been positioned, but the handle 8 continues to rotate clockwise for a certain angle, and ca6 140 makes the handle 8 tighten along the thread of the shaft 12 until the square tool holder 4 is pressed against the small slide plate 2. On the terminal camera? When the handle 8 and the sleeve 9, 10 continue to rotate clockwise, the axial upward force acting on the sleeve 10 compresses the spring 13. Because the end face teeth between the sleeve 10 and the handle 8 are unidirectional helical teeth, the teeth of the sleeve 10 can slide on the tooth surface of the end face cam 7. Lubricating oil is injected from the oil cup 1 1 to lubricate all parts in the square tool holder.

Verb (abbreviation for verb) suffix

Ca6 140 tailstock is installed on tailstock guide rails C and D of the lathe bed, and the longitudinal position can be adjusted according to the length of the workpiece. After the position is adjusted, use the quick fastening handle? Clamping: When the quick fastening handle 7 is pushed backward, the tailstock can be clamped on the guide rail of the lathe bed through the eccentric shaft and the pull rod. Sometimes, in order to fasten the tailstock more firmly, the nut 9 can be tightened. At this time, the nut 9 firmly clamps the tailstock on the lathe bed through the screw 10 and the pressure plate 1 1. The rear center 1 is installed in the tapered hole of the tailstock center sleeve 3. The tailstock center sleeve 3 is installed in the hole of the tailstock body 2, guided by Ping Jian 15, and can only move axially and cannot rotate. Shake the handwheel 8 and move the tailstock center sleeve 3 longitudinally. When the tailstock center sleeve 3 moves to the required position, the handle 4 can be used to turn the screw 12 to tighten the sleeves 13 and 14, thus clamping the tailstock center sleeve 3. If it is necessary to remove the center, turn the handwheel 8 to make the tailstock center sleeve 3 retreat until the left end of the lead screw 5 abuts against the rear center, and push the rear center out of the cone L. ..

Ca6 140 On the horizontal lathe, drilling tools with equal holes can also be installed on the taper L of the tailstock center sleeve. At this time, the handwheel 8 is rotated, and the tailstock center sleeve 3 can drive the drilling tool to move longitudinally for hole processing with the help of the transmission of the lead screw 5 and the nut 6.

The adjusting screws 16 and 17 are used to adjust the lateral position of the tailstock body 2, that is, to adjust the position of the center line of the rear center in the horizontal plane to make it coincide with the center line of the spindle to turn the cylindrical surface; Or make it intersect with the center line of the spindle, the workpiece is supported by the front and rear centers, and the conical surface with smaller taper is used. "