SU21928A1 - Grinding machine - Google Patents

Description

In the proposed crushing machine, constructed from elements known per se, a carriage is used supporting the chuck, which covers the spindles parallel to each other and the chisel shaft and is equipped with a slider that engages when turning the lever fastened on the carriage to one of the spindle screws, which carriage. a gets movement in one direction or another.

In FIG. 1 is a side view of the machine; FIG. 2nd cross section; FIG. 3-top view of the machine; FIG. 4 and 5 are a side view and cross-section of the device for driving and stopping the carriage; FIG. 6 is a side view of the incisal holder and chuck.

The machine has two frames) 1 and 2 (fig. 1-3), in which the cutting shaft 3 is installed, equipped with two pulleys 4 and 5, located behind the frame 2 and connected by a belt drive with a motor; the pulley 4 is mounted on the shaft 3 freely, the pulley is 5 still. On the shaft 3, also from the outer side of the frame 2, a gear wheel 6 is mounted, interlocking with another gear wheel 7, mounted fixedly on the end of the screw 8, “fixed in frames 1 and 2, located under shaft 3

and parallel to it. On the screw 8 there is, in addition, on the outside of the frame 2, a gear wheel 9 coupled with the gear box below it, fixed 10 mounted on the screw 11 placed in frames 1 and 2, parallel to screw 8, but rotating relative to to the latter in the opposite direction. A carriage 12 is mounted on a shaft 3 mounted along it, equipped with a recess 13 (FIGS. 4 and 5), in which a slider 14 is mounted in a vertical direction, fitted on one side with an upper thread 15 corresponding to a screw 8, and on the other side lower cutting 16, corresponding to cutting screw 11, and playing the role of a nut for said screws 8 and 11. For raising and lowering the slider 14, the latter is provided with an axis 17, the ends of which are pivotally connected to the lower parts of two earrings 18 located on both sides of the carriage 12. The upper parts of earrings 18 with dinenets with the ends of the bracket 20 connected pivotally to the appendix 21 of the lever 22, which rotates on the axis 23 fixed in the protrusion of the carriage 12. To guide the axis 17 of the slide 14 and the bracket 20 in the lower end of the carriage 12, grooves 24 and 25 are arranged. On the carriage 12 fortified

at its lower end there is a part 26 with an axis 27 mounted on it, on which a lever 28 is movably mounted, which serves to hold the lever 22 in a defined position. The lever 28 is provided with a spring 31, a shoulder 34 and an inclined platform 29, in the upper part of which there is a protrusion 30 interlocking at certain moments with the lower end of the lever 22.

The wooden round for 35, as shown in FIG. 1 to 3 dotted lines, held by four supporting gears 36, 37, 38 and 39, of which the gear 38 and 39 are fixedly wedged on the shaft 40 (Fig. 3), receiving a continuous movement from the drive (for example, from a screw 8 by means of a chain transmission), and the teeth 36 and 37 sit freely on the adjustable part using screws 42 and 43 of the rod 41 parallel to the shaft 40. The chuck 45 of FIG. 1, 3, 6), which carries a cutter for machining round 35, is mounted on a pivoting holder 44, which covers the incisal shaft, 3 and can be moved along it. Between the processes of the fork holder 44, the upper end of the carriage 12 is placed (Fig. 6), as a result of which the holder 44 with a cutter takes part in the movement of the carriage along the shaft 3; the cutter is rotated by any method, for example, by means of gear wheels with transmission from shaft 3.

FIG. 4 and 5, the slider 14 is depicted in a neutral position and is not in contact with the screws 8 and I. When the lever 22 is turned by hand in the direction of the arrow 46 (FIG. 4), the slider 14 by way of the appendix 21 and the earrings 18 rises, and the upper cutting 15 of the slider enters the screw thread 8. During this rotation, the lower part of the lever 22 simultaneously slides along the inclined platform 29 of the lever 28, the latter turning downwards due to pressing it, pulling the spring 31. As soon as the end of the lever 22 passes over the upper end of the inclined platform 29 where the protrusion 30 is located, the lever 28 is raised by the force of the spring 31, and the end of the lever 22 is retained by said protrusion 30 and holds the slider 14 in the closed position associated with the rotating screw 8. Due to the rotation of the screw 8, the slider 14 with the carriage 12, and together with them the holder 44 is moved along the shaft 3, for example, from the end o, of the machine to the other end b (Fig. 1).

When the carriage 12 reaches the stop 33 fixed on the frame 1 (Fig. 1), the lever arm 34 hits the stop 33, and the lever 28 is bent down and the lever 22 is released from engaging the protrusion 30. Thereafter, the slider 14 due to its weight (or with the help of springs) moves away from the screw 8 and, slipping down, enters the thread 16 into the thread of the lower screw 11, which, as mentioned above, rotates in the opposite direction with respect to the screw 8. Because of the above, the slider 14 with the carriage 12 and the holder 44 will begin to move under the action of the screw 11 back to the opposite end tsu and machine. When approaching the latter, the lower part of the lever 22 abuts against the anvil 32 fixed to the frame 2, at which the lever rotates and the slider 14 rises to the middle position between the screws 8 and 11 shown in FIG. 5 and the carriage stops. Round to 35, after clearing it from the bark, it is removed and a new one is inserted, after which the lever 22 is again turned in the direction indicated by the arrow 46 in FIG. 4. The slider 14 is inserted into the threading of the upper screw 8, the lever 22 is held up by the lever 28, and the described process is repeated.

The subject matter of the invention.

A crushing machine, characterized by the use of the carriage 12 (Fig.), Covering the spindle screws 8 and 11 parallel to each other and the tool shaft 3, which receive rotation from the drive by means of the respective gears, at the end of which both the carriage 12 is located between the processes of the stem a conventional swivel holder 44 (fig. 1 and 6) for a chisel chuck 45 for treating a wooden round 35 placed on the support teeth 36, 37, 38, 39, of which the teeth 36 and 37 sit freely on a reversible one using screws 42, 43 of the rod 41, " and the teeth 38, 39 are wedged on the shaft 40, receiving continuous rotation from the drive, then

as the lower end of the carriage 12, which includes screws 8 and 11 (Fig. 4 and 5), is provided with grooves 24 and 25, guiding, respectively, the slider 14 with cuts 15 and 16, which plays the role of a nut for these screws, and the ends of the bracket 20, connected on one side with earrings 18 with a slider 14, and on the other with a process 21 of the lever 22, designed to reproduce the clutch with

or another of screws 8 and 11, for which rotation, stops 33 and 32 (Fig. 1) are used, acting at the end of the stroke of the carriage 12 first-on the shoulder 34 of the spring lever 34-28 to release from engagement with its protrusion 30 the lever 22 and the second - on this lever to set it to the middle position (fig. 4), from which it is manually transferred into engagement with the protrusion 30.

FIG. 6 4 figs