SU366061A1 - DEVICE FOR GRINDING OF MULTI-LEVEL TOOLS - Google Patents

Description

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The invention relates to the field of engineering and can be used for sharpening tools.

Devices are known for sharpening a multi-blade tool that performs reciprocating axial rotational movement relative to a grinding blade with prop and pick-up.

The proposed device differs from the known ones in that the prop is fixed and rigidly connected with the cam, with which the pick-up interacts, which is moved together with the tabletops until the prop leaves the next tooth and combines the next with the pick-up. This increases the versatility of the device.

FIG. 1 given basic hydrokinematic scheme; in fig. 2, 3 and 4 - the position of the prop and pickup.

The device contains a frame /, and which has a table 2. And a drawer 3. The front 4 and rear 5 headstock is mounted on the table, in the centers 6 of which the tool 7 is sharpened.

In front of the headstock 4 mounted hydraulic engine 8. On the table 2 is also fixed mechanism 9 pickup. On the cabinet 3 there is a grinding wheel with a circle of 10.

Prop 11c. the stop 12 is installed on the lower guide tables.

Inside the bed / are located a power cylinder 13, a control spool 14, a four-way "wound 15, a pump 16, an overflow safety valve" 17, a throttle 18, a spool 19 for controlling the hydraulic motor 8, a distribution valve 20, a reducing valve 21.

Tool 7 is installed in centers b

Babo K 4 and 5 are on the table 2 of the machine tool and are connected to the spindle of the headstock 4 with a lead.

The support // is brought to the tool face and the table 2 is displaced with the tool 7 in the transverse direction until the tool 7 is in a position relative to the position ensuring the formation of the back angle. Then, the pick-up mechanism 9 is brought to the end face and the pick-up itself is set so that it is tensioned into the tool end and its end would be slightly higher than the tooth to be sharpened. After that, the pump 16 is turned on and the reciprocating movement of the table 2 begins, provided by the valve 15 and the spool 14. At the same time, the rotor of the hydraulic motor 8 begins to rotate, which presses the screw tooth of the tool to the prop 11.

As the tool 7 moves to the right, the last tooth of the latter is turned by the hydraulic motor 8, slides (with sliding) along the prop, making a helical motion.

When the table moves backward, the tooth of the tool 7 must rotate in the opposite direction, overcoming the torque developed by the hydraulic motor 8. When the teeth are pressed strongly, they do not pry up the teeth (this time is always overcome, sometimes the prop breaks.

To prevent breakage in the hydraulic actuator, a spool 19 is installed, which in the course of the table 2 switches the flow of fluid to the hydraulic motor 8 so that the liquid passes through the pressure reducing valve 21.

The decrease in pressure reduces the torque on the rotor shaft and, therefore, facilitates the prop backward rotation of the tool 7.

The spool 19 switches on. E1Dy-shift with the measurement of the direction of the table, since its piston is connected through the distribution valve 10 to the spool 14.

The throttle / 5 controls the speed of rotation of the hydraulic motor 8.

As for the rest (transverse feed per revolution of the workpiece, supply of the tool to the circle, etc.), the stak.nok acts similarly to other grinding semi-automatic machines.

After the prop 11 and the pick-up mechanism 9 are installed, they press into the initial

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the position, the movement of table 2 with tool 7 begins. The mechanism 9 of the catch, which is connected to the table, also begins to move. The pickup roller 22 slides against the anvil 12, deflects and deflects the mechanism 9, and then slides along the anvil 12.

The prop // remains in place and acts as previously described.

When the table 2 returns to its initial position, the roller 22 moves down from the stop 12 and the pickup mechanism of the spring 23 presses against the end face of the tool 7. The sharpened tooth of the tool 7 moves down from

the stubs // and the tool 7 begins to rotate until its next tooth rests against the grip 9.

Subject invention

A tool for sharpening a multi-blade tool in terms of its reciprocating axial and rotational movement relative to the grinding wheel on props and with a pickup, characterized in that, in order to increase its versatility, the prop is fixed and has a copier with which the pickup interacts moved together with the product table until the support leaves the next tooth and combines the next tooth with the pickup.