Device for friction-mechanical coating on the neck of a cranked shaft on the lathe

 

The invention can be used in the repair of machines. On the support device installed in the housing with the rubbing bars. Each of the buildings are made with cylindrical shank. The bars are placed in the housing at an angle to the axis RUB neck with samopomoc. A support configured to secure the tool holder lathe. The invention allows to improve the performance and simplify the design of the device. 2 C.p. f-crystals, 2 Il.

The invention relates to the field of mechanical engineering and repair of vehicles, in particular for friction-mechanical coating type fabo on the neck of a cranked shaft.

The aim of the invention is to increase processing performance.

A device for friction-mechanical coating on the neck of a cranked shaft (patent of the USSR 1834913, 1993, bull. 30). The disadvantages of the device are as follows: 1. Low device performance because the processing journals of crankshafts is consistently one after another.

2. The impossibility of simultaneous processing of several journals of crankshafts.

3. The complexity of mounting bars and clamping cheeks to the device.

In C the hoist and the rubbing bars to rigidly positioned in the housing at an angle (for example, 3oto the axis of the piece, the end of the shank body to do as polished cylindrical roller undercarriage landing in support of the rotary device, to simplify the design of the clamp cheeks to the device.

Diagram of the device is given in Fig.1, where 1 is the case with shank, 2 - jaw, 3 - rubbing block, 4 - pad, 5 - bracket, 6 - clamping bolt, 7 - axis.

Device number 3, 4 or more pieces can be used on a lathe for simultaneous processing of connecting rod and crankshaft journals of crankshafts (for example, a diesel engine ZMZ-62), which should provide improved performance of the process. In addition, the performance of the process of rubbing crankshaft journals brass (copper) can be increased by a corresponding increase in the feed of the tool due to the fact that the tool feed is performed by samopomoc tool and supply shank casing other end of setup by automatically submitting the longitudinal slide of the machine. Thus, the proposed device consists of a device and supports in two versions: one for indigenous necks, the other for the connecting rod journals of the crankshaft.

In Fig.2 shows the schematic of the supports to the lathe for odnovremennoi indigenous necks consists of the base 8 area 5 and the four pairs of pins 9, located respectively at the location of indigenous journals on the crankshaft. Each right pin 9 will be feeding device longitudinal carriage of a lathe; each left when you change the rotation of the spindle in the opposite direction. Automatic feeding machine must be equal to the amount of samopomoc device.

Support for processing three connecting rod journals of the crankshaft (Fig.2,b) consists of the base 10 - area 5 and three rotary bushing 12 to the shank of device cases in which the processing of the connecting rod journals shank body 1 performs reciprocating motion and rotate together with the sleeve 12. The rotary sleeve 12 is freely placed in the hole of area 11, is welded to the base 10, respectively, the location of the connecting rod journals in the crankshaft. For mounting bushings 12 in area 11 used the washer 13 and the pin 14.

Simultaneous processing of connecting rod and crankshaft journals. In this case, the appliance must have the characteristics of both devices (Fig.2,a and 2,b).

Claims

1. Device for friction-mechanical coating on cervical crankshafts made with the possibility of installation on token the buildings are made with cylindrical shank, the bars are placed in the housing at an angle to the axis RUB the neck, with the possibility of samopomoc, and a support configured to secure the tool holder lathe.

2. The device under item 1, characterized in that the coating on the core cervical support contains pins for the implementation of the supply corps through the carriage of a lathe, with its value equal to the amount of samopomoc bars.

3. The device under item 1, characterized in that the coating on the crank pin bearing includes swivel bearings serving to secure the shank of the buildings.

 

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FIELD: machine building.

SUBSTANCE: machine contains first machine module (1) made with possibility of simultaneous machining of the crankshafts, second machine module (2) made with possibility of simultaneous machining of two crankshafts, and load carrying structure (3) having at least four places (31, 32, 33, 34) to secure crankshafts for their machining. The carrying structure (3) is located between the machine modules. Places (31, 32, 33, 34) for securing are located in two vertical rows (35, 36) of securing places, each of them contains two places of securing places (31, 32, 33, 34), located at different height, and carrying structure (3) is installed with possibility of rotation such that it can rotate by at least 180є. Besides the crankshafts machining method is suggested.

EFFECT: reduced time of the production cycle and ensured good operation parameters of the equipment.

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FIELD: machine engineering.

SUBSTANCE: crankpins are processed on a lathe when the large-sized crankshaft rotates around the axis of the crusts alternately by grinding and turning. In this case, a grinding device is used comprising an endless abrasive belt of the appropriate grain size stretched on the rollers which is attached to the slide support of the lathe and a turning device comprising a two-position tool head with a right or left cutter and three support rollers for placing on the connecting rod of crankpin, which is fixed on the support of the lathe.

EFFECT: use of the invention makes it possible to increase the accuracy of processing and to reduce the roughness of the surfaces of the connecting rod necks.

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EFFECT: improving the crankshaft turning accuracy.

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FIELD: finish treatment of precision friction pairs requiring high quality of treatment at retaining starting dimensions, for example, high-precision machines and tools and diesel engine supply equipment.

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EFFECT: improved quality of coat at low porosity.

2 cl, 2 dwg, 1 ex

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