Five-axis gantry pneumatic system

Abstract

The invention discloses a five-axis gantry pneumatic system, which belongs to the field of machine tools. An air gun path is connected to an air source, a first air source processing unit filters the gas of the air source, an air blowing branch is connected to the air source through the first air source processing unit, an air curtain branch is connected to the air source through the first air source processing unit, a C-axis air curtain branch and a spindle air curtain protection branch are connected to the first air source processing unit through a drying unit, an accumulator is connected to the air source, and a plurality of control branches are connected to the accumulator through a second air source processing unit. The control branch of the present application is independently led out from the air source, and an accumulator is arranged at the front end of the control branch to ensure the stability and reliability of the actuator and reduce the influence of the external air source; the gas blown out of the air blowing branch and the air curtain branch is filtered by the first air source processing unit to avoid bearing burning; a drying unit is arranged on the air curtain branch to dry the gas blown out of the air curtain branch to ensure that the blown gas will not affect the life of the five-axis head.

Description

Technical Field

[0001] The present invention relates to a machine tool, and more particularly to a five-axis gantry pneumatic system. Background Art

[0002] As one of the processing mother machines in industries such as aircraft and automobile, the five-axis gantry has particularly high requirements for processing accuracy and stability, which poses certain requirements for the air pressure connected to the five-axis head. On the one hand, there should be no impurities, and on the other hand, there should be no water vapor and oil vapor in the places where air curtains are used. Where air pressure is required in the five-axis head, the gas flow rate and pressure should be kept stable.

[0003] Currently, most manufacturers adopt a single pneumatic processing unit system, and this structure has the following drawbacks:

[0004] 1. Once the air gun or the tool setter uses air, axis A or C will alarm, causing a risk of shutdown.

[0005] 2. During the processing, due to the use of air by other machine tools, axis A / C will have a stall alarm during processing, resulting in workpiece scrapping.

[0006] 3. The air source is not processed cleanly, resulting in bearing burnout and the five-axis head being unable to work. Summary of the Invention

[0007] In order to overcome the deficiencies of the prior art, one of the purposes of the present invention is to provide a five-axis gantry pneumatic system that is less affected by external air pressure, ensures the smoothness and reliability of operation, and has a clean air source.

[0008] One of the purposes of the present invention is achieved by adopting the following technical solutions:

[0009] A five-axis gantry pneumatic system includes an air source, an air gun branch, a first air source treatment unit, a blowing branch, an air curtain branch, and a control branch. The air gun branch is connected to the air source. The first air source treatment unit filters the gas of the air source. The blowing branch is connected to the air source through the first air source treatment unit. The air curtain branch is connected to the air source through the first air source treatment unit. The air curtain branch includes a drying unit, a C-axis air curtain shunt, and a spindle air curtain protection shunt. The C-axis air curtain shunt and the spindle air curtain protection shunt are connected to the first air source treatment unit through the drying unit. The control branch includes an accumulator, a second air source treatment unit, and several control shunts. The accumulator is connected to the air source, and several control shunts are connected to the accumulator through the second air source treatment unit.

[0010] Further, the first air source treatment unit includes a filter, a first pressure reducing valve, and a pressure gauge connected in sequence. The filter is connected to the air source, and the pressure gauge is connected to the blowing branch and the drying unit.

[0011] Further, the control branch includes one or more of an A-axis clamping branch, an A-axis releasing branch, a C-axis clamping branch, and a C-axis releasing branch.

[0012] Further, the drying unit includes an oil mist separator, a micro mist separator, and a polymer dryer connected in sequence. The oil mist separator is connected to the first air source treatment unit, and the polymer dryer is connected to the C-axis air curtain branch and the main shaft air curtain protection branch.

[0013] Further, the air gun branch includes a manual valve, and the manual valve controls the opening and closing of the air gun branch.

[0014] Further, the blowing branch includes a first solenoid valve, and the first solenoid valve controls the opening and closing of the blowing branch.

[0015] Further, the main shaft air curtain protection branch includes a third pressure reducing valve, and the third pressure reducing valve reduces the pressure of the gas flowing out of the main shaft air curtain protection branch.

[0016] Further, the C-axis air curtain branch includes a second pressure reducing valve, and the second pressure reducing valve reduces the pressure of the gas flowing out of the C-axis air curtain branch.

[0017] Further, the second air source treatment unit includes a filter, a first pressure reducing valve, and a pressure gauge connected in sequence. The filter is connected to the accumulator, and the pressure gauge is connected to the control branch.

[0018] Further, the control branch includes a second solenoid valve and a pressure switch. The second solenoid valve controls the opening and disconnection of the control branch. The pressure switch monitors the working pressure at the shaft end. When there is an error between the shaft end pressure and the preset value, the pressure switch alarms.

[0019] Compared with the prior art, the control branch of the five-axis gantry pneumatic system of the present invention is separately led out from the air source, and an accumulator is arranged at the front end of the control branch to ensure the stable and reliable operation of the actuating element and reduce the influence of the external air source. The first air source treatment unit filters the gas of the air source, and the blowing branch is connected to the air source through the first air source treatment unit, so that the gas blown out by the blowing branch and the air curtain branch is filtered to avoid burning out the bearing. The air curtain branch is provided with a drying unit to dry the gas blown out by the air curtain branch, ensuring that the blown gas will not affect the life of the five-axis head. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a schematic structural diagram of the five-axis gantry pneumatic system of the present invention;

[0021] Figure 2 isFigure 1 Structural schematic diagram of the first air source treatment unit of the five-axis gantry pneumatic system;

[0022] Figure 3 For Figure 1 Structural schematic diagram of the drying unit of the five-axis gantry pneumatic system.

[0023] In the figure: 10, air source; 20, air gun branch; 21, manual valve; 30, first air source treatment unit; 31, filter; 32, first pressure reducing valve; 33, pressure gauge; 40, blowing branch; 41, first solenoid valve; 50, air curtain branch; 51, drying unit; 510, oil mist separator; 511, micro mist separator; 512, polymer dryer; 52, C-axis air curtain shunt; 520, second pressure reducing valve; 53, spindle air curtain protection shunt; 530, third pressure reducing valve; 60, control branch; 61, accumulator; 62, second air source treatment unit; 63, control shunt; 630, second solenoid valve; 631, pressure switch. Detailed implementation manners

[0024] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0025] It should be noted that when a component is referred to as being "fixed to" another component, it can be directly on the other component or there can also be another intermediate component through which it is fixed. When a component is considered to be "connected" to another component, it can be directly connected to the other component or there may be another intermediate component at the same time. When a component is considered to be "disposed on" another component, it can be directly disposed on the other component or there may be another intermediate component at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are only for the purpose of illustration.

[0026] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field to which this invention belongs. The terms used herein in the description of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0027] Figures 1 to 3This is the five-axis gantry pneumatic system of the present invention. The five-axis gantry pneumatic system includes a gas source 10, a gas gun branch 20, a first gas source treatment unit 30, a blowing branch 40, a gas curtain branch 50, and a control branch 60.

[0028] The gas source 10 provides compressed gas for the five-axis gantry pneumatic system.

[0029] The gas gun branch 20 is used to supply gas to the gas gun. The gas gun branch 20 includes a manual valve 21, and the manual valve 21 controls the opening or closing of the gas gun branch 20.

[0030] The first gas source treatment unit 30 is used to filter the compressed gas conveyed by the gas source 10 to prevent the bearing from burning out due to impurities in the gas. The first gas source treatment unit 30 includes a filter 31, a first pressure reducing valve 32, and a pressure gauge 33. The filter 31, the first pressure reducing valve 32, and the pressure gauge 33 are connected in sequence. The filter 31 filters the gas, the first pressure reducing valve 32 reduces the pressure of the gas, and the pressure gauge 33 displays the pressure of the gas after pressure reduction.

[0031] The blowing branch 40 is used for tool change blowing. The blowing branch 40 is connected to the pressure gauge 33 of the first gas source treatment unit 30, and the gas flowing through the pressure gauge 33 flows into the blowing branch 40. The blowing branch 40 is provided with a first solenoid valve 41, and the first solenoid valve 41 controls the opening or closing of the blowing branch 40.

[0032] The gas curtain branch 50 includes a drying unit 51, a C-axis gas curtain shunt 52, and a spindle gas curtain protection shunt 53. The drying unit 51 is connected to the output end of the first gas source treatment unit 30. The drying unit 51 is used to dry the gas. The drying unit 51 includes an oil mist separator 510, a fine mist separator 511, and a polymer dryer 512. The oil mist separator 510, the fine mist separator 511, and the polymer dryer 512 are connected in sequence.

[0033] The C-axis gas curtain shunt 52 is connected to the output end of the polymer dryer 512 to dry the gas introduced into the C-axis gas curtain shunt 52, extend the service life of the C-axis, and prevent the C-axis from rusting due to moisture. The C-axis gas curtain shunt 52 is provided with a second pressure reducing valve 520, and the second pressure reducing valve 520 is used to adjust the gas pressure of the C-axis gas curtain shunt 52. The C-axis gas curtain shunt 52 ventilates the C-axis to achieve gas curtain sealing for the C-axis.

[0034] The spindle gas curtain protection shunt 53 is connected to the output end of the polymer dryer 512 to dry the gas introduced into the spindle gas curtain protection shunt 53, extend the service life of the spindle, and prevent the spindle from rusting due to moisture. The spindle gas curtain protection shunt 53 is provided with a third pressure reducing valve 530, and the third pressure reducing valve 530 is used to adjust the air pressure of the spindle gas curtain protection shunt 53. The spindle gas curtain protection shunt 53 ventilates the spindle to achieve gas curtain sealing for the spindle.

[0035] The control branch 60 includes an accumulator 61, a second air source treatment unit 62, and a plurality of control shunts 63.

[0036] The accumulator 61 is connected to the air source 10. The accumulator 61 converts the energy in the system into compressed energy or potential energy for storage. When the system needs it, the compressed energy or potential energy is converted back into pneumatic energy and released to replenish the system again. When the instantaneous pressure of the system increases, it can absorb this part of the energy to ensure the normal pressure of the entire system. The presence of the accumulator 61 makes the five-axis head less affected by the external air pressure during the machining process, ensuring the smoothness and reliability of operation; it avoids the occurrence of A / C axis blocking alarms during the machining process of the five-axis head, resulting in workpiece scrapping.

[0037] The second air source treatment unit 62 is connected to the accumulator 61. The structure of the second air source treatment unit 62 is the same as that of the first air source treatment unit 30. The second air source treatment unit 62 is used to filter the gas output by the air source 10.

[0038] The plurality of control shunts 63 are respectively an A-axis clamping shunt, an A-axis releasing shunt, a C-axis clamping shunt, and a C-axis releasing shunt. The A-axis clamping shunt is used to control the clamping of the A-axis, the A-axis releasing shunt is used to control the release of the A-axis, the C-axis clamping shunt is used to control the clamping of the C-axis, and the C-axis releasing shunt is used to control the release of the C-axis. Each control shunt 63 includes a second solenoid valve 630 and a pressure switch 631. The second solenoid valve 630 is used to control the opening and closing of the control shunt 63. The pressure switch 631 monitors the working pressure at the shaft end. When there is an error between the shaft end pressure and the preset value, the pressure switch 631 alarms.

[0039] When using the five-axis gantry pneumatic system of the present invention, the manual valve 21 controls the on and off of the air gun branch 20 to close or open the air gun. The gas from the air source 10 enters the blowing branch 40 after being filtered by the first air source treatment unit 30. The first solenoid valve 41 controls the on and off of the blowing branch 40 to close or blow the blowing branch 40. The gas from the air source 10 enters the drying unit 51 for drying after being filtered by the first air source treatment unit 30. The second pressure reducing valve 520 adjusts the gas pressure of the C-axis air curtain branch 52, and the C-axis air curtain branch 52 supplies air to the C-axis to achieve air curtain sealing for the C-axis. The third pressure reducing valve 530 adjusts the air pressure of the main shaft air curtain protection branch 53, and the main shaft air curtain protection branch 53 supplies air to the main shaft to achieve air curtain sealing for the main shaft. The accumulator 61 converts the gas energy of the air source 10 into compressed energy or potential energy for storage. When the system needs it, the compressed energy or potential energy is converted back into pneumatic energy and released to replenish the system again. The presence of the accumulator 61 makes the five-axis head less affected by the external air pressure during the processing, ensuring the smoothness and reliability of the operation. The second air source treatment unit 62 filters the gas output from the air source 10. The A-axis clamping branch controls the clamping of the A-axis, the A-axis release branch controls the release of the A-axis, the C-axis clamping branch controls the clamping of the C-axis, and the C-axis release branch controls the release of the C-axis.

[0040] Through the above design, the control branch 63 of the five-axis gantry pneumatic system is separately led out from the air source 10, and an accumulator 61 is provided at the front end of the control branch 63 to ensure the stable and reliable operation of the actuator, reduce the influence of the external air source, and avoid the occurrence of A / C axis stall alarms during the processing of the five-axis head, resulting in workpiece scrapping. The first air source treatment unit 30 filters the gas of the air source. The blowing branch 40 is connected to the air source 10 through the first air source treatment unit 30, so that the gas blown out by the blowing branch 40 and the air curtain branch 50 is filtered to avoid bearing burnout. The air curtain branch 50 is provided with a drying unit 51 to dry the gas blown out by the air curtain branch 50, ensuring that the blown gas will not affect the life of the five-axis head.

[0041] The above embodiments only represent several implementation modes of the present invention, and the description is relatively specific and detailed, but it should not be construed as a limitation to the scope of the invention patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several deformations and improvements can be made. These are all equivalent modifications and evolutions based on the essence of the present invention to the above embodiments, and all belong to the protection scope of the present invention.

Claims

1. A five-axis gantry pneumatic system, comprising an air source, characterized in that: The five-axis gantry pneumatic system also includes an air gun route, a first air source processing unit, an air blowing branch, an air curtain branch and a control branch. The air gun route is connected to the air source. The first air source processing unit filters the gas of the air source. The air blowing branch is connected to the air source through the first air source processing unit. The air curtain branch is connected to the air source through the first air source processing unit. The air curtain branch includes a drying unit, a C-axis air curtain branch and a spindle air curtain protection branch. The C-axis air curtain branch and the spindle air curtain protection branch are connected to the first air source processing unit through the drying unit. The control branch includes an accumulator, a second air source processing unit and several control branches. The control branch includes one or more of the A-axis clamping branch, the A-axis release branch, the C-axis clamping branch and the C-axis release branch. The accumulator is connected to the air source, and several of the control branches are connected to the accumulator through the second air source processing unit.

2. The five-axis gantry pneumatic system according to claim 1, characterized in that: The first air source processing unit includes a filter, a first pressure reducing valve and a pressure gauge which are connected in sequence. The filter is connected to the air source, and the pressure gauge is connected to the air blowing branch and the drying unit.

3. The five-axis gantry pneumatic system according to claim 1, characterized in that: The drying unit includes an oil mist separator, a micro mist separator and a polymer dryer which are connected in sequence. The oil mist separator is connected to the first air source processing unit, and the polymer dryer is connected to the C-axis air curtain branch and the spindle air curtain protection branch.

4. The five-axis gantry pneumatic system according to any one of claims 1 to 3, characterized in that: The air gun circuit includes a manual valve, and the manual valve controls the opening and closing of the air gun circuit.

5. The five-axis gantry pneumatic system according to any one of claims 1 to 3, characterized in that: The air blowing branch includes a first solenoid valve, and the first solenoid valve controls the opening and closing of the air blowing branch.

6. The five-axis gantry pneumatic system according to any one of claims 1 to 3, characterized in that: The spindle air curtain protection branch includes a third pressure reducing valve, and the third pressure reducing valve reduces the pressure of the gas flowing out of the spindle air curtain protection branch.

7. The five-axis gantry pneumatic system according to any one of claims 1 to 3, characterized in that: The C-axis air curtain branch includes a second pressure reducing valve, which reduces the pressure of the gas flowing out of the C-axis air curtain branch.

8. The five-axis gantry pneumatic system according to any one of claims 1 to 3, characterized in that: The second gas source processing unit includes a filter, a first pressure reducing valve and a pressure gauge which are connected in sequence. The filter is connected to the accumulator, and the pressure gauge is connected to the control branch.

9. The five-axis gantry pneumatic system according to any one of claims 1 to 3, characterized in that: The control branch includes a second solenoid valve and a pressure switch. The second solenoid valve controls the opening and disconnection of the control branch. The pressure switch monitors the working pressure of the shaft end. When there is an error between the shaft end pressure and a preset value, the pressure switch alarms.

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