CN214196804U - Hydraulic balance system for vertical tool rest of machine tool - Google Patents

Abstract

The utility model discloses a perpendicular knife rest hydraulic balance system of lathe belongs to lathe hydraulic pressure technical field. The hydraulic control system comprises a coarse filter, a gear pump, a pressure gauge, a fine filter, a back pressure overflow valve, an overflow valve, a one-way valve, an energy accumulator and a hydraulic control one-way valve, wherein the gear pump is arranged on a machine tool base; the outlet end of the fine filter is respectively connected with an overflow valve and a one-way valve through pipelines, and the inlet end of the overflow valve is provided with a pressure gauge; the one-way valve is communicated with an oil inlet of the balance oil cylinder through a pipeline, a piston rod of the balance oil cylinder is fixedly connected with a ram of the moving part through a connecting piece, the ram is connected with a feeding mechanism, and the feeding mechanism is a screw rod device driven by a feeding motor; the outlet end of the check valve is provided with an energy accumulator, a branch of the pipeline is provided with a hydraulic control check valve, and the hydraulic control check valve is connected with the backpressure overflow valve. The utility model discloses the side satisfies the quick travel requirement that the lathe fed, reduction in production cost.

Description

Hydraulic balance system for vertical tool rest of machine tool

Technical Field

The utility model relates to a perpendicular knife rest hydraulic balance system of lathe belongs to lathe hydraulic pressure technical field.

Background

With the change of global economic situation, the requirements for equipment manufacturing are also changed greatly, and the positioning of the product adapting to the market also has a great influence on domestic machine tool enterprises. Most of domestic users require that machine tool products at the present stage have higher performance and certain cost performance due to the problem of low capital. In order to match with the design principle of high efficiency and energy saving of products, the hydraulic balance system of the vertical tool rest of the machine tool can greatly reduce the model selection specification of the feeding motor, reduce the cost, meet the requirement of quick movement of machine tool feeding, and greatly save the external matching cost and the use consumption.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects of the prior art, the utility model provides a vertical knife rest hydraulic balance system of machine tool, the system is applicable to the work of the vertical knife rest of the balanced machine tool, is convenient and practical, meets the requirement of quick movement of feeding of the machine tool, and reduces the production cost.

The utility model provides a technical scheme that its technical problem adopted is: a hydraulic balance system for a vertical tool rest of a machine tool comprises a coarse filter, a gear pump, a pressure gauge, a fine filter, a backpressure overflow valve, an overflow valve, a one-way valve, an energy accumulator and a hydraulic control one-way valve.

The gear pump is arranged on the base of the machine tool, the inlet end of the gear pump is connected with the coarse filter, and the outlet end of the gear pump is connected with the fine filter; the outlet end of the fine filter is respectively connected with an overflow valve and a one-way valve through pipelines, and the inlet end of the overflow valve is provided with a pressure gauge; the one-way valve is communicated with an oil inlet of the balance oil cylinder through a pipeline, a piston rod of the balance oil cylinder is fixedly connected with a ram of the moving part through a connecting piece, the ram is connected with a feeding mechanism, the feeding mechanism is a screw rod device driven by a feeding motor, and then a cutter holder is driven by the screw rod device to move; the outlet end of the check valve is provided with an energy accumulator, a branch of the pipeline is provided with a hydraulic control check valve, and the hydraulic control check valve is connected with a backpressure overflow valve through the pipeline.

The gear pump firstly sucks oil filtered by a coarse filter into a cavity of the gear pump, then sends the oil filtered by the coarse filter into a fine filter, the oil filtered by the fine filter flows through an overflow valve through a pipeline, a pressure gauge is observed according to the principle that the balance of a ram of a moving part needs to set a pressure value, the oil pressure in the pipeline is monitored by the pressure gauge, the overflow valve controls the oil pressure in the pipeline, the overflow valve does not overflow when the working load is less than the set pressure value, and the overflow valve overflows when the working load is greater than the set pressure value and is used for stabilizing and limiting the pressure; oil flows into a balance oil cylinder of the vertical tool rest through a one-way valve, meanwhile, the accumulator is filled with liquid to store energy in the oil supply process to reduce the flow pulsation of the system, when the oil is interrupted accidentally and the system needs hydraulic oil, the oil is discharged by air pressure in the accumulator to ensure pressure balance, and when the ram responds quickly, the accumulator can also be used as an auxiliary power source; the hydraulic control one-way valve is a one-way valve with controllable reverse opening, oil can freely flow through in two directions, when a hydraulic control port of the hydraulic control one-way valve is communicated with pressure oil, a piston mandril in the hydraulic control one-way valve jacks a valve core, the oil can flow through in two directions, when the pressure oil is suddenly interrupted, the hydraulic control port of the hydraulic control one-way valve has no pressure, the valve core is closed, and the oil way keeps pressure; the one-way valve, the hydraulic control one-way valve and the energy accumulator can keep pressure under unexpected conditions, namely keep the position of the whole tool rest; the back pressure overflow valve is not unloaded under the normal condition in the system, and only unloads redundant pressure oil in the balance oil cylinder when the ram moves downwards so as to adapt to the volume change generated by the balance oil cylinder when the vertical ram moves up and down.

The utility model has the advantages that: the utility model has the characteristics of reasonable design, convenient operation, safety, practicality, large bearing capacity, stable operation, good retentivity and high economic cost performance; the vertical tool rest hydraulic balance system of the machine tool can greatly reduce the model selection specification of the feeding motor, reduce the cost, meet the requirement of quick movement of machine tool feeding, and greatly save the external matching cost and the use consumption.

Drawings

The present invention will be further described with reference to the accompanying drawings and the following detailed description.

Fig. 1 is a schematic structural diagram of the present invention.

Reference numbers in the figures:

1. the device comprises a coarse filter, 2, a gear pump, 3, a pressure gauge, 4, a fine filter, 5, a backpressure overflow valve, 6, an overflow valve, 7, a one-way valve, 8, an energy accumulator, 9, a hydraulic control one-way valve, 10, a balance oil cylinder, 11, an oil inlet, 12, a feeding motor, 13 and a ram.

Detailed Description

As shown in fig. 1, a hydraulic balance system for a vertical tool rest of a machine tool comprises a coarse filter 1, a gear pump 2, a pressure gauge 3, a fine filter 4, a backpressure overflow valve 5, an overflow valve 6, a check valve 7, an energy accumulator 8 and a hydraulic control check valve 9, wherein the gear pump 2 is installed on a base of the machine tool, the inlet end of the gear pump 2 is connected with the coarse filter 1, and the outlet end of the gear pump 2 is connected with the fine filter 4; the outlet end of the fine filter 4 is respectively connected with an overflow valve 6 and a one-way valve 7 through pipelines, and the inlet end of the overflow valve 6 is provided with a pressure gauge 3; the check valve 7 is communicated with an oil inlet 11 of a balance oil cylinder 10 through a pipeline, a piston rod of the balance oil cylinder 10 is fixedly connected with a ram 13 of a moving part through a connecting piece, the ram 13 is connected with a feeding mechanism, the feeding mechanism is a screw rod device driven by a feeding motor 12, and a tool holder is driven by the screw rod device to move; the outlet end of the check valve 7 is provided with an energy accumulator 8, a branch of the pipeline is provided with a hydraulic control check valve 9, and the hydraulic control check valve 9 is connected with the backpressure overflow valve 5 through the pipeline.

The gear pump 2 firstly sucks oil filtered by the coarse filter 1 into a cavity of the gear pump, then the oil filtered by the coarse filter is sent to the fine filter 4, the oil filtered by the fine filter flows through the overflow valve 6 through a pipeline, the pressure gauge 3 is observed according to the principle that the balance of the ram 13 of the moving part needs to be set with a pressure value, the oil pressure in the pipeline is monitored by the pressure gauge 3, the oil pressure in the pipeline is controlled by the overflow valve 6, the overflow valve 6 does not overflow when the working load is less than the set pressure value, and the overflow valve 6 overflows to stabilize and limit the pressure when the working load is greater than the set pressure value; oil flows into a balance oil cylinder 10 of the vertical tool rest through a one-way valve 7, meanwhile, the energy accumulator 8 is filled with liquid to store energy in the oil supply process to reduce the flow pulsation of the system, when the oil is interrupted accidentally and the system needs hydraulic oil, the air pressure in the energy accumulator 8 discharges the oil to ensure the pressure balance, and when the ram 13 responds quickly, the energy accumulator 8 can also be used as an auxiliary power source; the hydraulic control one-way valve 9 is a one-way valve with controllable reverse opening, oil can freely flow through in two directions, when a hydraulic control port of the hydraulic control one-way valve 9 is communicated with pressure oil, a piston mandril in the hydraulic control one-way valve pushes a valve core open, the oil can flow through in two directions, when the pressure oil is suddenly interrupted, the hydraulic control port of the hydraulic control one-way valve 9 has no pressure, the valve core is closed, and the oil way keeps pressure; the one-way valve 7, the hydraulic control one-way valve 9 and the energy accumulator 8 can keep pressure, namely the position of the whole tool rest under unexpected conditions; the back pressure overflow valve 5 is not unloaded under the normal condition in the system, only when the ram 13 moves downwards, the redundant pressure oil in the balance oil cylinder 10 is unloaded so as to adapt to the volume change generated by the balance oil cylinder 10 when the vertical ram 13 moves up and down, and the back pressure overflow valve can play a role in balancing the ram 13 of the moving part by matching the valves, so that the gravity of the ram 13 is stable.

Claims (1)

1. The utility model provides a perpendicular knife rest hydraulic balance system of lathe, includes coarse filter (1), gear pump (2), manometer (3), smart filter (4), backpressure overflow valve (5), overflow valve (6), check valve (7), energy storage ware (8) and liquid accuse check valve (9), its characterized in that: the gear pump (2) is arranged on a machine tool base, the inlet end of the gear pump (2) is connected with the coarse filter (1), and the outlet end of the gear pump (2) is connected with the fine filter (4); the outlet end of the fine filter (4) is respectively connected with an overflow valve (6) and a one-way valve (7) through pipelines, and the inlet end of the overflow valve (6) is provided with a pressure gauge (3); the check valve (7) is communicated with an oil inlet (11) of the balance oil cylinder (10) through a pipeline, a piston rod of the balance oil cylinder (10) is fixedly connected with a ram (13) of a moving part through a connecting piece, the ram (13) is connected with a feeding mechanism, the feeding mechanism is a screw rod device driven by a feeding motor (12), and then a tool holder is driven by the screw rod device to move; the outlet end of the check valve (7) is provided with an energy accumulator (8), a branch of the pipeline is provided with a hydraulic control check valve (9), and the hydraulic control check valve (9) is connected with the backpressure overflow valve (5) through the pipeline.

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