SU10254A1 - File and Hack Sawing Machine - Google Patents

Description

In the proposed machine, the notching of files and hacksaw blades is produced by a chisel hinged at the end of a uniformly swinging lever, fixed on an axis, rotated by engaging a finger moving along the coupling shaft with a finger of a constantly rotating pulley. The longitudinal movement of the suporta with a file fixed on it or the blade of the hacksaw is produced by the lead screw with the help of the nut turning from the ratchet. For adjusting the frequency and impact force of the chisel, there is a wedge-shaped cam, the setting of which changes the notch pitch.

In FIG. 1 shows a longitudinal section of the machine; FIG. 2-cross section; FIG. 3 is a rear view of the regulation sector; FIG. 4 is a longitudinal section of the screw drive mechanism; FIG. 5-view of the sleeves with a wedge-shaped cam.

The machine consists of a transverse shaft 1 (Fig. 1, 2), resting on two bearing brackets 2 and 3, with a lever 5 mounted on a key, at the end of which a chisel 25 is hinged, and a spring 29 pressed to the ledge 30 of the lever.

Adjacent to the lever on the shaft 1 is mounted a spring coupling 8 moving with its finger 9, a spring pressed 6 to a wedge-shaped cam 13 of the rotary sleeve 13 (FIG. 2.5), the other end of which is fitted with a spring latch on the key 14. A drive pulley 10 is mounted on the sleeve 13, which rotates freely on the sleeve and is equipped with a finger 11. The handle 14 with the latch 14 can engage in a certain position with the sector 16 fixed on the base 4 (Fig. 3). At the opposite end of the shaft 1, a lever 17c is fastened with a slot engaging a connecting rod 18 connected to a connecting rod 19. By this connection, the ratchet 23 is rotated with the clamp 26, which is pivotally connected to the nut 24, which holds the screw 21 on the semicircle. The coupling and disengagement of the nut 24 with the lead screw 21 is made by a movable hollow cylinder 36 with tapering inner walls moved by the handle 34 when turning the latter in one direction or the other, thereby making the cutout on the head of the handle Z intercepts a sleeve tooth 36

and pulls on the screw 21 nut 24 or releases it. The cylinder 36 moves inside the fixed tube 37, which is tightly attached to the corresponding part of the bed 4. The tube 37 is provided with a finger on which the handle 34 is rotated to move to one or the other side of the inner cylinder 36. One end of the screw 21 is tightly connected to the support 22, on which strengthens the file or the notch-saw blade. The suporta is moved by means of a nut 24 rotated by a ratchet 23, 19, 20.

The machine operates as follows: the handle 14 is transferred to the extreme right position b (Fig. 3) on the last tooth of sector 16, the sleeve 13 is turned together with the handle 14 and with its cam 13 it moves the sleeve 8 to the extreme right position (Fig. 2) until the finger 9 ceases to engage with the finger 11, mounted on the driving pulley 10. Then, the pulley 10, which will rotate into the idle state, is actuated by the drive. When moving the handle 14 to the left of the bc. A (Fig. 2), the cam 13 moves away from the finger 9, while the spring 6 moves the sleeve 8 to the pulley 10, so that the finger 9 engages the finger 11 and thereby activates the mechanism. At the same time, the rotating pulley 10 will grab the finger 9 and rotate the shaft 1, and with it the lever 5 at a known angle until the finger 9 slips off the cam 13i and then the lever 5, with the chisel 25, under the action of the spring 33, makes a blow by file In the interval between the blows of the lever 5, the ratchet 23 turns the half-nut 24 and thereby advances the caliper 22 forward. The impact force of the lever 5 and the speed of movement of the supor 22 forward depend on the height of the chisel lift and the amount of rotation of the ratchet 23, which vary by turning the handle 14, since this changes the time the finger 9 contacts the cam 13; The greatest impact force will be at the position a of the handle 14 (Fig. 3).

The subject of the patent.

1. A machine for notching files and hacksaw blades, characterized by the use of a lever 5 fixed on shaft 1, carrying at its end, pivotally connected with it and under the influence of spring 29, chisel 25 (Fig. 1), which lever 5 is driven action using a spring clutch 8 with a finger 9 and a i-pulley 10 mounted on a shaft 1 and moving along this shaft with a finger 11, sitting freely on a rotary sleeve 13 fitted with a wedge-shaped cam 13 at one end and a handle with another Not spring-loaded latch 14 / (Fig. 1, 2), included in the g the drive fixedly mounted on the bed 4 of the sector 16 (Fig. 3), intended together with the rotary sleeve and the wedge 13 on it (Fig. 5) to adjust the angle of rotation of the shaft 1., 2. When the machine tool described in paragraph 1 the caliper 22 of the mechanism consisting of the spindle 21 attached to the caliper and the nut 24 pivotally connected to the collar 26 of the ratchet 23 brought into motion by means of a pull 18 connected with the lever 17 seated on the shaft 1 and the connecting rod 19 equipped with a doggie 20, what is the nut 24 inserted into the hollow cylinder 36 with a bevel bubbled vnut1ei walled, enclosed in a stationary, secured to the frame tube 37 provided with a rotary handle 34, prednazna ennuyu for moving cylinder 36 along the axis of the screw, c order engage or disengage the nut from the bolt (FIGS. 1 and 4).