Leveling structure of numerical control milling machine

Abstract

The utility model relates to a leveling structure of a numerical control milling machine, which comprises a support component arranged between a base and a workbench, the support component comprises a plurality of groups of support oil cylinders uniformly distributed below the workbench, and an annular pipeline is laid along the distribution path of the support oil cylinders. Each supporting oil cylinder is communicated with the annular pipeline through a branch pipeline to form a communicating vessel structure, and an electromagnetic reversing valve is installed on each branch pipeline. And a gradienter for monitoring levelness is arranged on the workbench and is in communication connection with the electromagnetic directional valve. By controlling the electromagnetic directional valves and the flow control valves at the same time, a plurality of supporting cylinders can work cooperatively, leveling can be completed in a short time, the working efficiency is greatly improved, the downtime of equipment is shortened, and the production benefit is improved; meanwhile, through real-time monitoring of the gradienter and the displacement sensor, the leveling precision can be further improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of milling machine leveling, especially relates to numerical control milling machine leveling structure. BACKGROUND

[0002] In modern manufacturing industry, numerical control milling machine as a kind of high-precision processing equipment is widely used in aerospace, automobile manufacturing, precision machining and many other fields.The machining precision of numerical control milling machine directly influences the quality and performance of product, and the levelness of workbench is one of the key factors to determine the machining precision of numerical control milling machine.

[0003] Traditional numerical control milling machine leveling structure mostly adopts simple thread adjusting mode, and the height of workbench is adjusted by rotating bolt.This leveling mode has many disadvantages.On the one hand, the operation process is complicated, and operating personnel need to spend a lot of time and energy to repeatedly adjust each bolt to achieve the horizontal state of workbench, which not only reduces work efficiency, but also has higher requirements for the skill level of operating personnel.On the other hand, the precision of thread adjustment is limited, and it is difficult to meet the demand of modern high-precision machining.In the machining process, slight levelness deviation can cause machining error and affect the dimensional accuracy and surface quality of product. SUMMARY

[0004] The utility model provides numerical control milling machine leveling structure in view of prior art problem, and specific technical scheme is as follows:

[0005] Numerical control milling machine leveling structure, including the support assembly between the base and workbench, the support assembly includes several groups of support oil cylinder that are evenly distributed below the workbench, annular pipeline is laid along the distribution path of the support oil cylinder, each support oil cylinder is communicated with the annular pipeline through branch pipeline to form a communicating vessel structure, and electromagnetic reversing valve is installed on the branch pipeline;

[0006] The level meter for monitoring levelness is installed on the workbench, and the level meter and electromagnetic reversing valve are communicatively connected.

[0007] As a further technical scheme of the utility model, the flow control valve is also installed on the branch pipeline, and the flow control valve is arranged close to the support oil cylinder.

[0008] As a further technical scheme of the utility model, the support oil cylinder includes support cylinder and support rod, the bottom of the support cylinder is communicated with the branch pipeline, and the support rod is slidingly arranged in the support cylinder and exposed at the top.

[0009] As a further technical scheme of the utility model, the support oil cylinder further includes displacement sensor, and the displacement sensor is installed on the support rod.

[0010] As a further technical scheme of the utility model, the supporting oil cylinder further comprises a rubber pad, and the rubber pad is installed between the supporting rod and the workbench.

[0011] The utility model discloses the beneficial effects are as follows:

[0012] In the application, by simultaneously controlling the electromagnetic reversing valve and the flow control valve, multiple supporting cylinders can work cooperatively, leveling can be completed in a short time, work efficiency is greatly improved, equipment downtime is reduced, and production benefit is improved; meanwhile, through real-time monitoring of the level meter and the displacement sensor, the leveling accuracy can be further improved. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 The overall structure schematic diagram of the numerical control milling machine leveling structure is shown.

[0014] Figure 2 The structure schematic diagram of the level meter is shown.

[0015] Figure 3 The structure schematic diagram of the supporting assembly is shown.

[0016] Figure 4 The structure schematic diagram of the supporting oil cylinder and the branch pipeline is shown.

[0017] LEGEND:

[0018] 100, base; 200, workbench; 210, level meter; 300, supporting assembly; 310, supporting oil cylinder; 311, supporting cylinder; 312, supporting rod; 313, displacement sensor; 314, rubber pad; 320, branch pipeline; 321, electromagnetic reversing valve; 322, flow control valve; 330, annular pipeline. DETAILED DESCRIPTION

[0019] To make the purpose, technical scheme and advantages of the utility model embodiment clearer, the utility model technical scheme will be clearly and completely described in combination with embodiments.

[0020] Figure 1 The overall structure schematic diagram of the numerical control milling machine leveling structure is shown. Figure 1 In the application, by simultaneously controlling the electromagnetic reversing valve and the flow control valve, multiple supporting cylinders can work cooperatively, leveling can be completed in a short time, work efficiency is greatly improved, equipment downtime is reduced, and production benefit is improved; meanwhile, through real-time monitoring of the level meter and the displacement sensor, the leveling accuracy can be further improved.

[0021] Figure 2 The structure schematic diagram of the level meter 210 is shown.Figure 2 In the embodiment, the level meter 210 is installed at the bottom of the workbench 200 to monitor the level of the surface of the workbench 200 in real time, and can send an electrical signal when the workbench 200 is tilted. The level meter 210 is installed at the back of the workbench 200, which ensures the monitoring effect and ensures that the front space of the workbench 200 is not interfered. It should be noted that in the embodiment, the projection shape of the workbench 200 is a circular structure, and the level meter 210 is installed at the center of the workbench 200. When the projection shape of the workbench 200 is some other regular or irregular shape, the installation position of the level meter 210 can be the center or diagonal of the workbench 200 to ensure the detection accuracy.

[0022] Figure 3 A structural diagram of the support assembly 300 is shown; Figure 3 In the embodiment, the support assembly 300 includes a plurality of groups of support oil cylinders 310 uniformly distributed below the workbench 200, and an annular pipeline 330 is laid along the distribution path of the support oil cylinders 310. Each support oil cylinder 310 is in communication with the annular pipeline 330 through a branch pipeline 320 to form a communicating vessel structure. The support oil cylinders 310 are distributed according to the projection shape of the workbench 200, which can better support the workbench 200. The shape of the annular pipeline 330 is laid along the distribution path of the support oil cylinders 310 to ensure that the distance between the annular pipeline 330 and each support oil cylinder 310 is equal. The support oil cylinders 310 and the annular pipeline 330 can be in communication with each other through the branch pipeline 320, and the plurality of support oil cylinders 310 are also in communication with each other through the annular pipeline 330 to form a communicating vessel structure based on the annular pipeline 330. According to Pascal's law, the pressure at the same depth in the same stationary liquid in the communicating vessel is equal everywhere. In the numerical control milling machine leveling system, when the workbench 200 is in a horizontal state, the oil depth in each hydraulic support cylinder is the same, and the pressure is also equal. Therefore, the support force of each piston rod on the workbench is uniformly distributed, which ensures the stability of the workbench.

[0023] Figure 4 A structural diagram of the support oil cylinder 310 and the branch pipeline 320 is shown; Figure 4 In the embodiment, an electromagnetic reversing valve 321 is installed on the branch pipeline 320. The electromagnetic reversing valve 321 is used to control the inflow or outflow of oil into or out of the support oil cylinder 310, so as to realize the height adjustment of the support oil cylinder 310. That is, when the height of one or more support oil cylinders 310 needs to be adjusted, the electromagnetic reversing valve 321 only needs to be turned on to realize the height adjustment. In the leveling process, not only the lower support oil cylinder 310 can be raised, but also the higher branch pipeline 320 can be lowered synchronously, so as to multiply the leveling rate.

[0024] It should be noted that the level meter 210 and the electromagnetic reversing valve 321 can be automatically controlled through the PLC, that is, the level meter 210 and the electromagnetic reversing valve 321 are both communicated and connected with the PLC through cables, the level meter 210 monitors the levelness of the workbench 200 in real time and sends an electric signal to the PLC when it is not level, and the PLC controls the electromagnetic reversing valve 321 to execute the command of oil flowing into or out of the supporting oil cylinder 310 according to the electric signal, so as to realize automatic control center.

[0025] With reference to the above Figure 4 , the flow control valve 322 is also arranged on the branch pipeline 320 and is arranged close to the supporting oil cylinder 310; the flow control valve 322 is used for accurately controlling the oil flow into the supporting oil cylinder 310, ensuring that the lifting action of the supporting cylinder is stable and accurate, avoiding that the workbench 200 is adjusted too much or too slowly due to too large or too small oil flow, and thus realizing accurate adjustment of the levelness of the workbench.

[0026] With reference to the above Figure 4 , the supporting oil cylinder 310 includes a supporting cylinder 311, a supporting rod 312, a displacement sensor 313 and a rubber pad 314, the bottom of the supporting cylinder 311 is communicated with the branch pipeline 320, and the supporting rod 312 is slidingly arranged in the supporting cylinder 311 and exposes the top; the supporting cylinder 311 is installed on the base 100 through bolts and is communicated with the annular pipeline 330 through the branch pipeline 320, the supporting rod 312 is slidingly arranged in the supporting cylinder 311 and is driven to rise by the pressure of the oil in the supporting cylinder 311 and is lowered by gravity; the displacement sensor 313 is installed on the supporting rod 312 and is used for monitoring the displacement of the supporting rod 312 in real time; the rubber pad 314 is installed between the supporting rod 312 and the workbench 200, so that the supporting oil cylinder 310 and the workbench 200 are connected in a soft manner, and vibration is avoided.

[0027] The above embodiments are only used to illustrate the technical solutions of the present application, but not to limit them.

Claims

1. A leveling structure of a numerical control milling machine, comprising a supporting assembly (300) arranged between a base (100) and a worktable (200), characterized in that, The support assembly (300) comprises several groups of support oil cylinders (310) evenly distributed below the workbench (200), an annular pipeline (330) is laid along the distribution path of the support oil cylinders (310), each support oil cylinder (310) is communicated with the annular pipeline (330) through a branch pipeline (320) to form a communicating vessel structure, and an electromagnetic reversing valve (321) is installed on the branch pipeline (320). A level meter (210) for monitoring the levelness is installed on the workbench (200), and the level meter (210) and the electromagnetic reversing valve (321) are communicatively connected.

2. The leveling structure of the numerical control milling machine according to claim 1, characterized in that: A flow control valve (322) is further installed on the branch pipeline (320), and the flow control valve (322) is arranged close to the support oil cylinder (310).

3. The leveling structure of the numerical control milling machine according to claim 2, characterized in that: The support oil cylinder (310) comprises a support cylinder (311) and a support rod (312), the bottom of the support cylinder (311) is communicated with the branch pipeline (320), and the support rod (312) is slidingly arranged in the support cylinder (311) and exposed at the top.

4. The numerically controlled milling machine leveling structure according to claim 3, characterized in that: The support oil cylinder (310) further comprises a displacement sensor (313), and the displacement sensor (313) is installed on the support rod (312).

5. The leveling structure of the numerical control milling machine according to claim 3, characterized in that: The support oil cylinder (310) further comprises a rubber pad (314), and the rubber pad (314) is installed between the support rod (312) and the workbench (200).

Images