RU2710618C1 - Device for grinding chamfers and plates of engines valves - Google Patents

Abstract

FIELD: machine building.

SUBSTANCE: invention relates to maintenance of internal combustion engines of tractors and cars and can be used for grinding chamfers and plates of valves for removal of deposits formed during fuel combustion. Device comprises body, abrasive and cutter arms fixed thereon, working elements of which are intended for interaction, respectively, with chamfer and plate of valve. Abrasive and cutting arms are arranged with the possibility of their driving by means of gear wheels mounted on screw pushers, with provision of axial movement along the housing axis.

EFFECT: as a result, the design of the appliance is simplified, the efficiency of valve grinding and service life are increased.

1 cl, 5 dwg

Description

FIELD OF THE INVENTION

The invention relates to the maintenance of internal combustion engines (ICE) of tractors and automobiles, in particular for grinding facets and valve plates from soot formed during the combustion of fuel and lubricating oil, and can be used to reduce labor costs for grinding the valve, as well as to increase engine performance.

State of the art

A device is known for grinding bevels of valves of internal combustion engines, with a valve-based assembly mounted thereon, grinding wheel and valve rotation actuators, a plate in which the grinding wheel drive shaft supporting the valve rotation drive made in the form of a friction gear ( SU 1458170 A1, published in the bulletin No. 6 02/15/1989).

The known device has a complex design, is not able to process the bottom of the valve disc.

A device is also known for processing a chamfer of a valve of a gas distribution mechanism of an internal combustion engine using a rotating eccentric for communicating to a spring-loaded valve an axial reciprocating movement with respect to an abrasive tool, which provides a reduction in the hydraulic resistance of gases during suction and exhaust, as well as a better valve-seat coupling seal that has an attachment abrasive bars in vibrating holders in which they are pressed against the machined surface under the influence of centrifugal forces developed by loads located on the levers. (No. 135784, published in the "Bulletin of inventions" No. 3 for 1961) (prototype).

The known device does not have the ability to install abrasive bars at different angles of processing the bevel of the valve and to process the bottom of the valve disc.

Disclosure of invention

The objective of the invention is to simplify the technical design of the device for grinding bevels and plates of engine valves, increasing productivity during grinding of valves, increasing the service life of valves.

This is achieved by the fact that, in contrast to the known technical solution, the device for grinding the chamfers and valve plates of the gas distribution mechanism of the internal combustion engine contains gears for driving the left and right screw pushers in order to move the abrasive and incisal arms, which in turn allows you to complete a complex of technological operations for grinding an engine valve with a reduction in labor costs.

Description of drawings

In FIG. 1 shows a general view of a device for grinding chamfers and valve plates of engines, FIG. 2 is an assembly drawing of a device for grinding bevels and plates of engine valves, FIG. 3 - abrasive shoulder, in FIG. 4 - incisal shoulder, in FIG. 5 - left screw pusher.

The implementation of the invention

In FIG. 1 shows a General view of the fixture, mounted in working position on the bed of the drilling machine; in FIG. 2 shows a device for grinding chamfers and plates of ICE valves, containing a bed (1) for installation on a drilling machine, a housing (2) for fastening working bodies, an abrasive shoulder (3), a cutting shoulder (4), a left screw pusher (5) for move the abrasive shoulder (3) and the right screw pusher (6) to move the cutting arm (4), the gears (7) serve to move the left and right screw pushers (5, 6), the latch (8), the abrasive block ( 9), clamp (10), rod (11), rod (12), spring (13), cam (14), electric motor (15), tool guide (16), tool clamp (17), turning tool (18), fixing bolt (19), left handle (20) to drive the left screw pusher (5), right handle (21) to drive the right screw pusher (6), connecting sleeve (22), nuts (23).

The device operates as follows.

The device is installed and fixed on the bed of the drilling machine (Fig. 1). The valve is clamped into the machine chuck, then the latch 8 sets a certain angle (30 ° or 45 ° depending on the type of valve) of the abrasive arm 3 and the height of the cutting clamp 17 is set using the guide of the cutter 16, followed by fixing it with a fixing bolt 19. In the cutting clamp 17, a turning tool 18 is located which cleans the valve disc. Then the machine is turned on and, using the left handle 20, the worker moves the abrasive shoulder 3, on which the electric motor 15, the eccentric 14, the rod 12, the spring 13, the rod 11, the clamp 10, the abrasive block 9 are mounted. An eccentric 14 is fixed on the motor shaft, during rotation of which there is a movement of the rod 12, which is meshed with the clamp 10, where the abrasive block 9 is fixed, which performs the function of grinding and eliminating defects (cracks, chips, bumps) in the valve facet. Due to the movement of the rod 12, the abrasive bar 9 moves along the axis of the shoulder to the extreme right position. After turning the eccentric 180 °, the spring 13 moves the clamp 10 to the leftmost position, as a result of which a reciprocating movement is created, which in turn allows grinding of the valve facet along the entire length of the abrasive bar 9.

After grinding the chamfer of the valve, the worker using the right handle 21 moves the cutting arm 4 due to the right screw pusher 6, due to which the valve plate is cleaned.

The abrasive shoulder 3 and the cutting arm 4 are connected to the left and right screw pushers 5, 6 by means of nuts 23. The abrasive and cutting shoulders are moved along the axis of the housing 2 due to the left and right screw pushers 5, 6, which are connected by a connecting sleeve 22 and are driven by gear counting 7. Due to the rotational movement and two shoulders with an abrasive beam and a turning tool, the chamfer and valve plate are quickly polished, the metal layer is grinded to eliminate defects (cracks and chips).

Claims (1)

A device for grinding bevels and valve plates of a gas distribution mechanism of an internal combustion engine, having a housing, characterized in that it comprises abrasive and tool shoulders fixed to the body, the working elements of which are designed to interact, respectively, with the chamfer and valve plate, while the tool is abrasive and tool shoulders are made with the possibility of bringing them into motion by means of gears mounted on screw pushers, with the provision of axial movement along the axis of the housing.

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