CN216349422U

CN216349422U - Air tightness detection system for numerical control lathe

Info

Publication number: CN216349422U
Application number: CN202122574235.XU
Authority: CN
Inventors: 张建中; 苏纪忠
Original assignee: Shanghai Wentian Hardware Machinery Co ltd
Current assignee: Shanghai Wentian Hardware Machinery Co ltd
Priority date: 2021-10-25
Filing date: 2021-10-25
Publication date: 2022-04-19
Anticipated expiration: 2031-10-25

Abstract

The utility model relates to an air tightness detection system for a numerically controlled lathe, which comprises a detection table, a workpiece processing seat and a portal frame, wherein the workpiece processing seat is fixedly arranged at the middle position of the top surface of the detection table, the portal frame is erected above the workpiece processing seat, an electric hydraulic column is fixedly arranged on the bottom surface of the portal frame, and a passage box is welded at the bottom end of the electric hydraulic column. The air pump pumps the air in the zero pressure passage and the detection passage, the air exhaust pipe in the zero pressure passage is exhausted to the atmosphere, the air in the detection passage is exhausted by the detection nozzle, when the detection nozzle is communicated with a workpiece, the pressure difference of the two passages is changed, the pressure difference sensor transmits a signal to the numerical control system of the machine tool, so that the machine tool normally operates, the structure is simple, the detection is convenient and quick, the detection precision is high, the air flow passing through the zero pressure passage can be adjusted by the adjusting valve, the pressure difference between the two passages is zero, and the detection precision is further improved.

Description

Air tightness detection system for numerical control lathe

Technical Field

The utility model relates to the technical field of air tightness detection of numerically controlled lathes, in particular to an air tightness detection system for a numerically controlled lathe.

Background

The air tightness detection technology is widely applied to the fields of national defense, automobiles, high-medium pressure pneumatic and hydraulic elements, electrical equipment, chemical engineering and the like. In the field of machine tools, air tightness detection is widely applied to production and detection of pneumatic elements and hydraulic elements. The labor cost of the manufacturing industry is increasing day by day, and the automation requirement of the machine tool is increasing day by day. In the automatic machining process of the machine tool, whether the machined workpiece is clamped in place or not is judged through air tightness detection, and the method is generally adopted in the machine tool industry at present.

The airtight detecting system for numerical control lathe that has now deals with different work pieces and all need to cooperate with its assorted mould and just can accomplish the test when doing airtight detection, therefore the restriction is too strong, the die sinking expense is high, be unfavorable for the detection processing of the big or small work piece of various different models of small batch volume, and the leakproofness is relatively poor between pneumatic route and the intercommunication work piece, the influence detects the precision, in addition, current airtight detecting system for numerical control lathe can't adjust the pressure through pressure route at zero point, lead to probably having pressure differential between detection route and the pressure route at zero point, and then the influence detects the precision, the practicality is waited to further promote.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects in the prior art, the utility model aims to provide an air tightness detection system for a numerical control lathe, and aims to solve the problems that the existing air tightness detection system for the numerical control lathe can be used for detecting different workpieces only by matching with a matched mold during air tightness detection, so that the limitation is high, the mold opening cost is high, the detection processing of small batches of workpieces with different types and sizes is not facilitated, the sealing property between a pneumatic passage and a communicated workpiece is poor, and the detection precision is influenced.

The above object of the present invention is achieved by the following technical solutions:

an air tightness detection system for a numerical control lathe comprises a detection table, a workpiece processing seat and a portal frame, wherein the workpiece processing seat is fixedly arranged at the middle position of the top surface of the detection table, the portal frame is erected above the workpiece processing seat, an electric hydraulic column is fixedly arranged on the bottom surface of the portal frame, a passage box is welded at the bottom end of the electric hydraulic column, a visual window is embedded in the front surface of the passage box, a pneumatic pump is fixedly arranged at the left side position of the top surface of the passage box, the bottom end of the pneumatic pump is connected with a three-way pipeline in a penetrating way, a zero pressure passage is fixedly connected at the right side position of the bottom end of the three-way pipeline, a first throttle valve is arranged on the surface of the zero pressure passage in a mounting way, an exhaust pipe is sleeved at the right port of the zero pressure passage, and a detection passage is connected at the left side position of the bottom end of the three-way pipeline in a penetrating way, the surface of the detection passage is fixedly provided with a second throttle valve, a communicating pipe is integrally connected between the detection passage and the zero pressure passage, and a detection nozzle is fixedly embedded in the center of the bottom surface of the passage box.

The present invention in a preferred example may be further configured to: one port of the detection passage far away from the three-way pipeline is connected with the detection nozzle in a penetrating way, the surface of the detection passage is fixedly provided with a pressure gauge, and the communicating pipe is used for connecting the zero pressure passage with the detection passage in a penetrating way.

The present invention in a preferred example may be further configured to: the surface of the zero pressure passage is fixedly sleeved with an adjusting valve, the surface of the communicating pipe is fixedly provided with a differential pressure sensor, and the differential pressure sensor is in communication connection with a machine tool numerical control system.

The present invention in a preferred example may be further configured to: the passage box is fixedly connected with the bottom surface of the top end of the portal frame through the electric hydraulic column, and the passage box, the electric hydraulic column and the detection nozzle are all positioned on the same axis.

The present invention in a preferred example may be further configured to: the bottom surface edge of the detection nozzle is pasted and provided with a sealing washer, the inner diameter of the sealing washer is equal to that of the detection nozzle, and the sealing washer is made of silica gel.

The present invention in a preferred example may be further configured to: the front surface of passageway case link up and is provided with the opening, but the visual window is fixed to be inlayed in the opening of passageway case, and the visual window is the visual window of ya keli material.

In summary, the utility model includes at least one of the following beneficial technical effects:

1. in the using process of the utility model, the zero pressure passage and the detection passage are arranged, the air is pumped by the pneumatic pump to enter the three-way pipeline and is divided into the zero pressure passage and the detection passage by the three-way pipeline, the air in the zero pressure passage is exhausted to the atmosphere through the exhaust pipe by the first throttle valve, the air in the detection passage is exhausted by the detection nozzle by the second throttle valve, when the detection nozzle is communicated with a workpiece, the pressure difference of the two passages is changed, and the pressure difference sensor transmits a signal to the numerical control system of the machine tool, so that the machine tool normally operates, the structure is simple, the detection is convenient and fast, and the detection precision is high.

2. In the using process of the utility model, the differential pressure sensor and the adjusting valve are arranged, the differential pressure sensor can monitor the differential pressure existing in the zero pressure passage and the detection passage in real time, and the air flow passing through the zero pressure passage can be adjusted by the adjusting valve before detection so as to ensure that the differential pressure between the two passages is zero, thereby further improving the detection precision.

3. In the using process of the utility model, the electric hydraulic column is arranged, the electric hydraulic column can operate to push the passage box to descend until the detection nozzle is contacted and communicated with the workpiece positioning surface, the detection nozzle which can be adjusted up and down can be used for dealing with workpieces with different height specifications, the flexibility is strong, the application range is effectively improved, and the production cost is effectively saved.

4. In the using process, the sealing washer is arranged, when the detection nozzle is communicated with the workpiece, the sealing washer is arranged between the detection nozzle and the workpiece, and the resilience of the self silica gel material is utilized to fill the gap between the detection nozzle and the workpiece, so that the air tightness between the detection nozzle and the workpiece is ensured, the accuracy of detection work is ensured, and the practicability is effectively improved.

5. In the using process, the visual window is arranged, the visual window made of acrylic materials is transparent, the readings of the pressure gauge and the pressure difference sensor can be observed through the visual window, so that the detection work can be controlled in real time, the controllability is high, and the work efficiency and the work quality are effectively improved.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic view of the construction of the access box of the present invention;

FIG. 3 is a schematic cross-sectional view of the channel box of the present invention;

FIG. 4 is an enlarged view of part A of the present invention.

Reference numerals: 1. a detection table; 2. a workpiece machining seat; 3. a gantry; 4. an electro-hydraulic column; 5. a passage box; 6. a visual window; 7. a pneumatic pump; 8. a three-way pipeline; 9. a zero pressure passage; 901. adjusting the valve; 10. a first throttle valve; 11. an exhaust pipe; 12. detecting a path; 1201. a pressure gauge; 13. a second throttle valve; 14. a communicating pipe; 1401. a differential pressure sensor; 15. detecting the nozzle; 1501. a gasket is provided.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Referring to fig. 1-4, the present invention provides the following technical solutions: an air tightness detection system for a numerical control lathe comprises a detection table 1, a workpiece processing seat 2 and a portal frame 3, wherein the workpiece processing seat 2 is fixedly arranged at the middle position of the top surface of the detection table 1, the portal frame 3 is erected above the workpiece processing seat 2, an electric hydraulic column 4 is fixedly arranged on the bottom surface of the portal frame 3, a passage box 5 is welded at the bottom end of the electric hydraulic column 4, a visual window 6 is embedded in the front surface of the passage box 5, a pneumatic pump 7 is fixedly arranged at the left side position of the top surface of the passage box 5, a three-way pipeline 8 is connected at the bottom end of the pneumatic pump 7 in a penetrating way, a zero pressure passage 9 is fixedly connected at the right side position of the bottom end of the three-way pipeline 8, a first throttle valve 10 is arranged on the surface of the zero pressure passage 9, an exhaust pipe 11 is sleeved at the right port of the zero pressure passage 9, a detection passage 12 is connected at the left side position of the bottom end of the three-way pipeline 8 in a penetrating way, a second throttle valve 13 is fixedly mounted on the surface of the detection passage 12, a communicating pipe 14 is integrally connected between the detection passage 12 and the zero pressure passage 9, and a detection nozzle 15 is fixedly embedded in the center of the bottom surface of the passage box 5.

Referring to fig. 1 and 3, specifically, one port of the detection passage 12, which is far away from the three-way pipeline 8, is connected in a penetrating manner with a detection nozzle 15, a pressure gauge 1201 is fixedly mounted on the surface of the detection passage 12, and a communicating pipe 14 connects the zero pressure passage 9 in a penetrating manner with the detection passage 12; in the embodiment, the air pumped by the pneumatic pump 7 enters the three-way pipeline 8 and is divided into the zero pressure passage 9 and the detection passage 12 by the three-way pipeline 8, the air in the zero pressure passage 9 is discharged to the atmosphere through the exhaust pipe 11 via the first throttle valve 10, the air in the detection passage 12 is discharged from the detection nozzle 15 via the second throttle valve 13, when the detection nozzle 15 is communicated with a workpiece, the pressure difference of the two passages changes, the pressure difference sensor 1401 transmits a signal to the machine tool numerical control system, so that the machine tool operates normally, the structure is simple, the detection is convenient and fast, the detection precision is high, and the pressure difference sensor 1401 can monitor the pressure difference existing in the zero pressure passage 9 and the detection passage 12 in real time, before detection, the air flow passing through the zero pressure passage 9 can be adjusted by adjusting the valve 901 so as to make the pressure difference between the two passages zero, thereby further improving the detection precision.

Referring to fig. 2 and 4, specifically, the passage box 5 is fixedly connected with the bottom surface of the top end of the portal frame 3 through the electric hydraulic column 4, and the passage box 5, the electric hydraulic column 4 and the detection nozzle 15 are all located on the same axis; detect the bottom surface border of nozzle 15 and paste and be provided with seal ring 1501, seal ring 1501 internal diameter equals with detection nozzle 15 internal diameter, and seal ring 1501 is the seal ring 1501 of silica gel material, in this embodiment, but electronic hydraulic column 4 function top moves route case 5 and descends, until making detection nozzle 15 and work piece locating surface contact and intercommunication, the work piece of different height specifications can be responded to detection nozzle 15 that can adjust from top to bottom, the flexibility is strong, application scope is effectively promoted, and effectively save manufacturing cost, when detection nozzle 15 communicates with the work piece, seal ring 1501 is in between detection nozzle 15 and the work piece, and utilize the resilience of its self silica gel material, fill the gap between the two, guarantee the gas tightness between the two, guarantee the accurate nature of detection work, the practicality is effectively promoted.

Referring to fig. 2, specifically, the front surface of passageway case 5 link up and is provided with the opening, and visual window 6 is fixed to be inlayed in passageway case 5's opening, and visual window 6 is the visual window 6 of ya keli material, and in this embodiment, the visual window 6 of ya keli material is transparent form, and manometer 1201 all can be observed through visual window 6 with pressure differential sensor 1401's reading to in real time handle the accuse to detection work, the controllability is strong, and work efficiency and operating mass are effectively promoted.

The utility model has the following use flow and working principle: when the utility model is used, firstly, a workpiece is placed on the surface of a workpiece processing seat 2, an electric hydraulic column 4 is started, the electric hydraulic column 4 operates to push a channel box 5 to descend until a detection nozzle 15 is contacted and communicated with a workpiece positioning surface, the detection nozzle 15 which can be adjusted up and down can correspond to workpieces with different height specifications, the flexibility is strong, the application range is effectively improved, the production cost is effectively saved, when the detection nozzle 15 is communicated with the workpiece, a sealing washer 1501 is positioned between the detection nozzle 15 and the workpiece, the gap between the two is filled by using the resilience of the silica gel material of the sealing washer, the air tightness between the two is ensured, the accuracy of detection work is ensured, the practicability is effectively improved, then, a pneumatic pump 7 is started, the pneumatic pump 7 pumps air into a three-way pipeline 8, and the air is shunted into a zero pressure channel 9 and a detection channel 12 by the three-way pipeline 8, the air in the zero pressure passage 9 is exhausted to the atmosphere through the exhaust pipe 11 through the first throttle valve 10, the air in the detection passage 12 is exhausted from the detection nozzle 15 through the second throttle valve 13, when the detection nozzle 15 is communicated with a workpiece, the pressure difference of the two passages changes, the pressure difference sensor 1401 transmits a signal to a numerical control system of the machine tool, so that the machine tool normally operates, the structure is simple, the detection is convenient and quick, the detection precision is high, the pressure difference sensor 1401 can monitor the pressure difference existing in the zero pressure passage 9 and the detection passage 12 in real time, the air flow passing through the zero pressure passage 9 can be adjusted through the adjusting valve 901 before the detection, so that the pressure difference between the two passages is zero, the detection precision is further improved, the visual window 6 made of acrylic material is in a transparent state, the readings of the pressure gauge 1201 and the pressure difference sensor 1401 can be observed through the visual window 6, so as to facilitate the real-time control of the detection work, the controllability is strong, and work efficiency and operating mass are effectively promoted.

The embodiments of the present invention are preferred embodiments of the present invention, and the scope of the present invention is not limited by these embodiments, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered by the protection scope of the utility model.

Claims

1. The utility model provides an airtight detecting system for numerical control lathe, is including examining test table (1), work piece processing seat (2) and portal frame (3), its characterized in that: the workpiece processing seat (2) is fixedly arranged at the middle position of the top surface of the detection table (1), the portal frame (3) is erected above the workpiece processing seat (2), the bottom surface of the portal frame (3) is fixedly provided with an electric hydraulic column (4), the bottom end of the electric hydraulic column (4) is welded with a passage box (5), the front surface of the passage box (5) is embedded with a visual window (6), the left side position of the top surface of the passage box (5) is fixedly provided with a pneumatic pump (7), the bottom end of the pneumatic pump (7) is connected with a three-way pipeline (8) in a penetrating way, the right side position of the bottom end of the three-way pipeline (8) is fixedly connected with a zero pressure passage (9), the surface of the zero pressure passage (9) is provided with a first throttle valve (10), and the right port of the zero pressure passage (9) is sleeved with an exhaust pipe (11), the bottom left side position through connection of tee bend pipeline (8) has detection route (12), the fixed surface that detects route (12) installs second choke valve (13), and detects that the integral type is connected with communicating pipe (14) between route (12) and zero pressure route (9), the bottom surface central point of passageway case (5) puts fixed the inlaying and has detection nozzle (15).

2. The airtightness detection system for the numerically controlled lathe according to claim 1, wherein: one port of the detection passage (12), which is far away from the three-way pipeline (8), is connected with the detection nozzle (15) in a penetrating way, a pressure gauge (1201) is fixedly arranged on the surface of the detection passage (12), and the communicating pipe (14) is used for connecting the zero pressure passage (9) with the detection passage (12) in a penetrating way.

3. The airtightness detection system for the numerically controlled lathe according to claim 2, wherein: the surface of the zero pressure passage (9) is fixedly sleeved with an adjusting valve (901), the surface of the communicating pipe (14) is fixedly provided with a differential pressure sensor (1401), and the differential pressure sensor (1401) is in communication connection with a machine tool numerical control system.

4. The airtightness detection system for the numerically controlled lathe according to claim 1, wherein: the passage box (5) is fixedly connected with the bottom surface of the top end of the portal frame (3) through the electric hydraulic column (4), and the passage box (5), the electric hydraulic column (4) and the detection nozzle (15) are all positioned on the same axis.

5. The airtightness detection system for the numerically controlled lathe according to claim 4, wherein: the bottom surface border of detecting nozzle (15) is pasted and is provided with seal ring (1501), seal ring (1501) internal diameter equals with detecting nozzle (15) internal diameter, and seal ring (1501) are seal ring (1501) of silica gel material.

6. The airtightness detection system for the numerically controlled lathe according to claim 1, wherein: the front surface of passageway case (5) link up and is provided with the opening, visual window (6) are fixed to be inlayed in the opening of passageway case (5), and visual window (6) are visual window (6) of ya keli material.