SU1423297A1 - Deep-boring machine tool - Google Patents

Abstract

The invention relates to the machine tool industry and can be used in the processing of the inner surface of the liners of long hydraulic cylinders. The aim of the invention is to expand the technological capabilities of the machine by providing | synchronous simultaneous movement of the part and the tool. When processing a part, the working fluid enters the piston cavity of the hydraulic cylinder 7 and through the hydraulic distributor 27 from the current cavity of the hydraulic cylinders 17 and 19 into the piston cavity of the hydraulic cylinder 18 that provides, along with the working feed of the clamping headstock 2, together with the guide head 3, the counter-synchronous feed of the tool heads 4. For this, the area of each of the hydrocylin firewood 17 and 19 is equal to half of the piston area of the hydraulic head 18 of the tool head 4. The feed speed of the hydraulic cylinders 17 and 19 is controlled by the throttle 23 mounted on the hydraulic line connecting the rods, then the cavity of the hydraulic cylinder 18 of the head 1 with the drain. 1 il.

Description

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The invention relates to machine tool and can be used in the treatment of the inner surface of the sleeves of long hydraulic cylinders.

The aim of the invention is to expand the technological capabilities of the machine by providing counter-synchronous movement of the workpiece and the tool.

The drawing shows a hydrokiemayematic scheme of a high-margin g-tank.

A deep-gouging machine, for example, for boring of hydraulic cylinders of hydraulic cylinders, |: it will hold the bed I, on which the clamping headstock 2, the guide head 3 and the tool baba 4 are installed.

The clamping head 2 consists of a hydraulic-) table 5, a power head 6, equipped with a conical sleeve 7) n, centering and clamping and rotating part 8. On the hydraulic table 5 but both sides are fixed rolling pins 9. The tool head 4 consists of hydraulic table 10, power-1YUH golotzki 1 1 with Surtanga 12 with tool 13 fixed in it.

The guide head 3 includes a hydraulic table 14, a device (not shown) for guiding and supporting boring bar 12 with tool 3, a conical sleeve 15 for guiding the tool, centering and clamping the part 8, a device 6 for fixing and clamping the skalok 9. Hydrocarb - Jtindry 17–19 tables 5, iO to 14 sv ijbi into a single hydraulic system with the help of 1 (distributors 20–22 and drosse– jjw 23. At the same time, the stockpile area of each hydroelectric reservoir is equal to half of the rodless area.

In the initial position, the clamping bab- 1 {a 2 and the guide head 3 ia-Dtc in the extreme left position and mounted on the bed 1. So that in. 1 | the spacing between their conical sleeves 7 and 15 was set to the maximum length (up to 2500 MI-J) of machining- E | aem part 8 with a gap of 40-50 mm. P (the instrumental head 4 is set to the extreme right position so that the end face of the tool 13 fixed by Eta boring bar 12 is separated from the left end of the guide head 3 with a minimum clearance.

The workpiece 8 is installed on the prism of the preliminary base

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povak (not shown) clamping headstock 2 and the guide head 3-.

Consider the work of the machine on transitions, moves,

When clamping the parts, the left cavities of the valve 20 and are included. 21. The oil is supplied to the rodless cavity of the hydrostroche-17 of table 5, and the rod cavity is connected to the drain. The clamping head 2 begins to move to the right, moving part B to the guide head 3 as far as it goes into the conical valve V5 and clamping it in sleeves 7 and 15. The working cavities of the hydraulic cylinders 19 and 18 of the tables 14 and 10 are closed at a time.

By clamping the workpiece 8., the headstock 2 stops and the pressure in the rodless cavity of the hydraulic cylinder 17 of the table 5 begins to increase. When the maximum pressure is reached, a command is sent to the clamp by the device 16 of the rollers 9, which in the course of processing guarantee a stable maximum clamping force on the part 8.

In the next cycle transition (working feed), the right cavity of the distribution valve 22 is turned on, and the hydraulic distributor 20 is set to the neutral position and thereby connects the rod together. The left cavities of the hydraulic cylinders 17 and 9 of the tables 5 and 14 and; . rodless hydraulic cylinder cavity 1 & table 10. The left cavity of the hydraulic distributor 21 remains included. Clamping head 2 starts moving again to the right. In this case, through the clamped part 8 and the rolling head 9 of the rolling pin 9 closed on the direction of the pin 3, moves the guide head.

The oil displaced from the rod cavities of the hydraulic cylinders 17 and 19 enters the rodless cavity of the cylinder 18 and causes the tool headstock 4 to move to the left with the speed of the clamp headstock 2, since the n-step of the two rod cavities is equal to the area of the rodless cavity. The oil from the rod end of the hydraulic cylinder 18 is drained. The movement speed (feed) is controlled by the throttle 23.

After finishing the part, i.e. in the cycle transition of the tool removal, the right cavity of the hydraulic distributor 21 and the left axle of the hydraulic distributor 22 turn on. The hydraulic distributor 20 remains in the bottom trail

Mr. position. The oil enters the rod end of the hydraulic cylinder 18 of the table 10, and the instrumental headstock 4 moves to the right. At the same time, the displaced oil from the rodless cavity of the hydraulic cylinder 18 of the table 10 falls into the rod cavity of the hydraulic cylinder 17 and 19 of the tables 5 and 4, causing them to move to the left with the same speed. The oil from the rodless cavity of the hydraulic cylinder 17 goes to the drain.,

When the tool head 4 reaches its initial position, a command is issued to disconnect the clip device. 16 skalok 9 and to retraction of the head stock, i.e. the part is unclamped. At the same time, the hydraulic distributor valve 20 additionally includes the right hydraulic distributors 21 to 22. The oil enters the rod cavity of the hydraulic cylinder 17 of the table 5 and the headstock 2 moves to the left (to its original position), freeing part 8. Oil from the rodless cavity hydraulic cylinder 17 table 5 goes to the drain.

Then a transition is established - leakage compensation. At the same time, the control valve 21 remains with the included, right cavity, the left cavity of the hydraulic distributor 20 is turned on,

. and the hydraulic distributor 22 turns off to the neutral position. The oil enters the rod cavity of the hydraulic unit of table 14 and the guide head 3, moving to the left, is set to its original position. The oil also enters the rodless cavity

the lindra 18 of the table 10, but since its rod end is locked by the hydrospread by the divider 22, the head 4 remains in its original position.

Claims (2)

1. A deep-growing machine, on the bed of which there is a clamping headstock with a guide head and an instrumental headstock with a feed hydraulic cylinder. about crying 5 about five 0 five so that, in order to expand technological capabilities by providing counter-simultaneous movement of the part and tool during processing, the machine is equipped with two additional hydraulic cylinders, one of which is connected with the clamping headstock, the other with the guide head, and their rod cavities are connected to the piston cavity of the hydraulic cylinder of the instrumental library with the ability to control its feeds, and the area of the rod cavity of each of the additional hydraulic cylinders is equal to half the area of the piston cavity idrotsilindra instru- .mentalnoy grandmother. . 2. Machine POP.1, characterized in that, in order to increase the reliability of the clamping of the part, it is equipped with two rolling pins fixed on both sides of the clamping headstock with the possibility of interaction with the clamping device, which is located on the guide head.