SU1135615A1 - Vertical multiple-spindle machine tool - Google Patents

Abstract

A VERTICAL MULTI-SPINDLE MACHINE with one boot and several working positions, containing a frame with a stand, slides mounted on it with spindle heads and tools, as well as a multi-position rotary table with product spindles and a drive for their rotation, characterized in that, in order to automate a multi-operation the processing of the edges of the gas distribution windows of the engine cylinders; two-step grooves are made at each position of the rotary table; the machine is equipped with POSSIBILITY reacting with dvuhstupenchatymipazami pivot bracket and the three-position hydraulic cylinder mounted with its stock roll, the spindle head mounted on a carriage rotatably.

Description

with

01

05

The invention relates to mechanical engineering, to mechanical processing, and can be used to process the inner surfaces of cylinder liners of a diesel engine.

The rounding and finishing of the edges of the gas distribution windows of the cylinders are performed sequentially with wire brushes, abrasive and leather elastic tools, which can be done, for example, on vertical multi-spindle machines.

Vertical multi-spindle machines for sequential machining of parts are known, including a stand frame, machining units mounted on it, as well as a multi-position rotary table containing several rotating spindles for mounting the product. Such machines have one loading position at which the workpiece is changed and the rest of the working positions at which a particular operation is performed.

These machines have been used in processing various parts, both round (with rotating work positions) and box-shaped 1.

However, for machining the edges of gas distribution windows of engine cylinders, they are not adapted because of the specificity of operations that require an additional installation movement to be given to the product to obtain the required tension between the tool and part, which is characteristic of dimensionless processing methods.

The aim of the invention is to automate the multi-operational process of processing the edges of the gas distribution windows of engine cylinders.

The goal is achieved by the fact that in a vertical multi-spindle machine with one loading and several working positions, containing a frame with a stand, skids of spindle heads with tools mounted on it, as well as a multi-position rotary table with spindles of the product and a drive of their rotation at each position the rotary table has two-step grooves, the machine is equipped with a swivel bracket fixed on the frame with the ability to interact with the slots and a three-position hydraulic cylinder with the installed and its stock roll, and the spindle head mounted on a carriage rotatably.

FIG. 1 shows the kinematic diagram of the machine; in fig. 2 --- a schematic view of the machine from above; in fig. 3 is a view A of FIG. one; in fig. 4 - tool position when processing the longitudinal edges of the windows; in fig. 5 - the same, when processing the transverse edges of the windows.

The machine consists of a rotary table 1 mounted in bearings 2 on plate 3 and driven in rotation from hydraulic motor 4 through a system of gear wheels 5 and 6, 5 evenly spaced around spindles of table 1 of spindle chucks 7 in bearings 8, which are driven in rotation from electric motor 9 through gear 10, a conic pair 11, cylindrical pairs 12 and 13, spindle heads 14 driven by electric motors 15, mounted in pairs in guides 16 on the portal 17, hydraulic cylinders 18 for reciprocating movement of the crosspiece 19 with the rods 20, associated with spindle heads 14. The bed of the machine includes plate 3, columns 21, and a cruciform portal 17.

The spindle heads 14 have pivot brackets 22, with which they are hinged R skids 23 and move along them along the rails 16. On the rails 23 there is a bracket 24 with a screw mechanism 25, which from the flywheel 26 allows the spindle head 14 to move around the circumference for

5 tool wear compensation 27-34. The axes of the tools 27, 29, 31, 33 are arranged parallel to the guide 16. These tools are intended for machining the longitudinal edges of the window of the liner. Axes of tools 28, 30, 32, 34 intended

 For processing the transverse edges of the windows of the liner, they are perpendicular to the guides 16 at the expense of the conical pair 35. The following tools are installed on the spindle heads, in accordance with the technological process: wire rods 27 and 28, petal abrasive wheels 29-32, leather petal circles 33. and 34. Wire brushes 27, 28 and leather petals. circles 33 and 34 are reversed in rotation.

0 On the periphery of the rotary table 1, nine positions were made, including loading, two-step grooves 36, and on the machine bed there is a rotation-fixing mechanism consisting of three-position hydraulic cylinder 37 with roller 38 on the rod and rotatable spring-loaded bracket 39. Axis of two-step groove 36 at the second stage, it is shifted by an amount equal to the tension created between the tools and the surface to be treated.

0 The sleeve 40 being machined from one edge has a double-sided flange 41, and from the other edge, the same technological flange 42 is installed symmetrically on this flange. resting against the flange 41 or 42 transmits the rotation of the sleeve. Fixture for fixing processed

The sleeve includes a housing 45 and a flap cover 46, with supporting rollers 47.

The cartridges 7 have a hollow construction, their cavities 48 are connected to a common cavity 49 located in the plate 3 and connected to the exhaust channel. This ensures the removal of small chips and wear products of tools.

At the loading position, the rotation of the spindle chuck 7 is turned off by a special mechanism consisting of a fixed bracket 50, interacting rollers 51 with a rod 52, a lever 53 and a coupling 54 mounted on each position of the table 1. A bracket 50 is attached to a fixed rack 55 located in the center hole of the table 1. When the table is rotated, the rollers 51 approach the unloading position and slide onto the bracket 50 and disengage the clutch 54.

The gas distribution ports 56 are rectangular in shape and are located on both sides of the liner at an equal distance from its ends. The windows face the liner mirror with their longitudinal 57 and 58 transverse edges, which need to be rounded and polished.

The machine works as follows.

The machined sleeve 40 is mounted on the spindle chuck 7 and pressed with a hinged lid 46 to the housing 45. After turning on the machine, its table 1 is rotated one position, while the brace 39 under the action of the spring enters the groove 36 and gives the command to move

roller 38 to the first step of the two-step groove 36, then the hydraulic cylinder 18 moves the yoke 19 with the spindle heads to the working position, in which the tools are located against the machined windows 56, barely touching the edges 57 and 58. After that, the hydraulic cylinder 37 moves the rod with the roller 38 to the second the step of the groove 36, as a result of which the table is further rotated by a certain angle, providing tension between the tool and the part. The rotation of the spindle heads is turned on, processing is performed during which at the positions 27, 28, 33, 34 the tools are stopped and their rotation is reversed. This ensures effective processing of all surfaces of the edges. After finishing the treatment, the roller 38 is taken out of the groove 36, the table is rotated to its original position, and the tools come out of contact with the work surface. The spindle heads 14 are withdrawn from the machined sleeves, the machining step is completed. One row of rectangular windows is machined with all tools at eight positions. To process another

a row of liner windows are stopped and the indicated processing cycle is repeated.

The presence of several consecutive working positions makes it possible to optimally construct the technological process of processing rectangular windows in engine sleeves, which

not only helps to reduce the complexity of processing but also increases the durability of the engine.

j2 / LIZG

 Afterlife

27 SS 0

////// L

26

FIG

58 0 5B

Y //////// A

f-r-J;

V ////////

FIG. five

Claims (1)

VERTICAL MULTI-SPINDLE MACHINE with one loading and several working positions, containing a bed with a stand, a slide mounted on it with spindle heads and tools, as well as a multi-position turntable with product spindles and a drive for their rotation, characterized in that. that, in order to automate the multi-operation process of processing the edges of gas distribution windows of engine cylinders, two-stage grooves are made at each position of the rotary table, the machine is equipped with a rotary bracket and a three-position hydraulic cylinder with a roller mounted on its rod, which are mounted on the bed with the possibility of interaction with two-stage grooves, while the spindle the heads are mounted on a slide with the possibility of rotation. SB SI 05 cl