RU1802785C - Crankshaft grinding device - Google Patents

Abstract

Usage: for processing frame necks of crankshafts of engines without removing them from the frame. SUMMARY OF THE INVENTION: the device comprises a housing consisting of upper and lower parts. In the worm wheel of the two halves are placed nodes of the grinding blocks. The body orientation mechanism relative to the surface being machined is made in the form of brackets connected to the body, adjustable eccentric support brackets of the body position measuring instruments. When the worm wheel rotates, the gear cams meshed with the gear rim of the housing move the blocks with grinding bars through the leash, causing them to oscillate along the axis of the crankshaft journal. 8 ill. ate

Description

The invention relates to mechanical engineering, in particular, to devices for processing frame necks of engine crankshafts without removing them from the frame and rotating, and can be used in shipitioHTe for repairing internal combustion engines.

The aim of the invention is to improve the quality of processing.

Figure 1 shows a General view of the device; figure 2 is the same, a top view; in Fig. 3 - section AA in Fig. 1; figure 4 - node I; on fip5 - view along arrow B in figure 4; on figb-site II in figure 1; Fig.7-section bB in Fig.4; in Fig.8 - node III.

A device for grinding crankshafts comprises an upper (1) and lower (2) part of the housing with a ring gear on one side of the housing. A worm with a drive (3) is installed on the upper part of the housing (1) and its orientation mechanism relative to the surface to be machined is made in the form of brackets (4) connected to the housing, as well as the upper part of the connecting unit (5). Inside the housing (1) and (2) there is a worm wheel (6), consisting of two halves, which are interconnected by eccentric locks (7).

In the grooves of the worm wheel (6), the fastening points of the grinding blocks are placed

yu vj

00 joint venture

SL

8) (node A). The sanding bar assemblies are secured by screws (9) in the worm wheel.

Screws (9) hold the carriage (10), in the direction of which is placed block 11) with grinding bars (12) and a lead (13). On the worm wheel (B) on the axle x 14), cams (15) are installed, having gears (16) at the other end of the gear,

The leash (13) enters the grooves of the cam (15). A pin (17) is fixed on the upper part of the housing (1), and a bayonet lock case (18) of the connecting unit (5) (node B) is fixed on the lower part of the housing (2). A bayonet lock (19) is installed in the bayonet lock housing (18). Adjustable eccentric supports (20) and supports with conventional screws (21) are installed on the brackets (4). The supports (20) (assembly B) consist of screws (22) and support nuts (23). On the top of the lid, body position meters) and (25) are installed.

. A device for grinding crankshafts operates as follows. To install the device on the crankshaft journal (26), the lower half of the frame bearing shell is previously removed from the bed of the frame bearing (27). Instead of the lower half of the liner, the lower part of the housing of the device (2) with half of the worm wheel (6) located in it is rolled between the frame neck of the crankshaft (26) and the bed frame bearing (27).

Then the upper part of the housing (1) with the second half of the worm wheel (6) placed in it is mounted on the neck of the crankshaft. By turning the bayonet lock (19), the pin (17) and the housing (18) of the connecting unit (5) are connected, thereby the upper (1) and lower (2) parts of the housing are fastened together. By turning the eccentric clamps (7), both halves of the worm wheel are connected to each other. Brackets (4) are secured through adjustable bearings (20) and (21) to the bed of the frame bearing (27). Unscrewing the eccentric screws (22) and using indicators (24) and micrometric dowels (25) (body position gauges), set the device relative to the neck of the crankshaft (26). After that

indicators and pins are raised and locked in the idle position. When the drive (3) is turned on, the worm wheel (6) rotates, entraining

axis (14) of the cams (15), which begin to rotate at the other end of the gear (16), which engages with the ring gear at the end of the device (1). Rotating, the cam (15) moves the leash (13), which makes the block (11) of the grinding blocks oscillate, moving the grinding blocks (12) along the axis of the grinding neck of the crankshaft.

Moving simultaneously in two directions - around the neck and along the axis of the crankshaft, the grinding bars perform a super-finish operation, which achieves a positive effect due to

improving the quality of the processed surface ..

The design of the body with the mechanism of orientation relative to the work surface and position meters

body, giving the grinding bars two movements simultaneously to realize the superfinishing operation improves the quality of the surface being machined.

Claims (1)

The claims A device for grinding crankshafts, comprising a housing of two parts interconnected by locks, a worm installed in it with a drive for rotating it, and a worm coaxial to the housing a wheel of two halves and carriages spring-loaded with respect to the carriage wheel with fastening points of grinding wheels, furthermore, in order to improve the quality, the device is equipped with each knot of fastening of grinding whetstones with leashes connected to them and cams located on the wheel with gears fixed on each of them, engaged with a gear ring made on the inner surface of the body, and mounted on the core - the mechanism of its orientation relative to the machined surfaces made in the form of brackets connected to the body, adjustable eccentric supports of the brackets and body position meters. 1802785 // - L cfw.3 $ Ј /. ()