CN107717559B - CNC machine tool and online detection fool-proof method and system for cylinder clamp of CNC machine tool - Google Patents
CNC machine tool and online detection fool-proof method and system for cylinder clamp of CNC machine tool Download PDFInfo
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- CN107717559B CN107717559B CN201710930573.8A CN201710930573A CN107717559B CN 107717559 B CN107717559 B CN 107717559B CN 201710930573 A CN201710930573 A CN 201710930573A CN 107717559 B CN107717559 B CN 107717559B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q11/00—Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling work; Safety devices specially combined with or arranged in, or specially adapted for use in connection with, machine tools
- B23Q11/0078—Safety devices protecting the operator, e.g. against accident or noise
- B23Q11/0092—Safety devices protecting the operator, e.g. against accident or noise actuating braking or stopping means
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q3/00—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine
- B23Q3/02—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine for mounting on a work-table, tool-slide, or analogous part
- B23Q3/06—Work-clamping means
- B23Q3/08—Work-clamping means other than mechanically-actuated
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- A Measuring Device Byusing Mechanical Method (AREA)
Abstract
The invention discloses an on-line detection fool-proofing method for a cylinder clamp of a CNC (computer numerical control) machine tool, which comprises the following steps of: vertically placing the probe at an initial position with a preset height above the surface of the cylinder clamp; enabling the probe to move downwards for a preset distance, detecting whether the probe touches a pressing block on the surface of the cylinder clamp in the moving process, and if so, warning a user according to a preset warning mode; and the length value of the preset distance is smaller than the difference between the preset height and the surface height of the pressing block when the air cylinder is tensioned. Within the preset distance length of the downward movement of the section, if the cylinder is not in a tensioning state, the pressing block is inevitably jacked up for a certain distance, so that the position of the pressing block is within the preset distance length of the section, and the pressing block is touched by the probe in the downward movement process. Therefore, the on-line detection fool-proofing method for the cylinder clamp provided by the invention can accurately judge the working state of the cylinder clamp in real time, and remind a user of carrying out corresponding operation in time, so that safety accidents are prevented.
Description
Technical Field
The invention relates to the technical field of numerical control machines and automatic control, in particular to an on-line detection fool-proofing method for a cylinder clamp of a CNC machine tool. The invention also relates to an on-line detection fool-proofing system of the cylinder clamp of the CNC machine tool and the CNC machine tool.
Background
With the development of the Chinese machinery industry, more and more mechanical devices are widely used.
In the machining manufacturing industry, the machining processes of workpieces are increasing, such as turning, milling, planing and grinding, and the corresponding machining equipment is a lathe, a milling machine, a planer, a grinding machine and the like. The lathe is generally used for machining rotating parts and the like, and the rotating speed of the lathe during operation is high and can reach thousands of revolutions per minute.
In a CNC (computer Numerical Control) machine tool, a power mechanism such as an air cylinder is often used to clamp a workpiece. The pressure of the air cylinder is stable, so that the operation is convenient and the automation is easy to realize, and the air cylinder is more and more widely applied to CNC clamps. When a workpiece is clamped through the air cylinder, the air cylinder is generally installed into the air cylinder clamp, then the workpiece is clamped through the air cylinder clamp, and the air cylinder stretches out and draws back in the air cylinder clamp, so that the workpiece is positioned. Generally, the cylinder has two operating states, i.e., pulled-up (extended) and pushed-away (retracted). When the telescopic rod of the cylinder extends out, the air valve is in an opening state, otherwise, the air valve is in a closing state.
However, in labor-intensive industries such as machining, technicians often need to monitor and operate dozens of machine tools simultaneously, and for CNC machine tools, operations such as opening or closing an air valve are included, so that monotonous actions are repeated for a long time, and operations of forgetting and omitting to open the air valve are inevitable, which may result in damages to fixtures and workpieces by tools, and even serious consequences of harming personal safety.
Therefore, how to accurately judge the working state of the cylinder clamp in real time and remind the user of corresponding operation in time to prevent safety accidents is a technical problem to be solved urgently by technical personnel in the field.
Disclosure of Invention
The invention aims to provide an on-line detection fool-proofing method for a cylinder clamp of a CNC (computer numerical control) machine tool, which can accurately judge the working state of the cylinder clamp in real time and remind a user of carrying out corresponding operation in time so as to prevent safety accidents. The invention also provides an on-line detection fool-proof system for the cylinder clamp of the CNC machine tool and the CNC machine tool comprising the on-line detection fool-proof system for the cylinder clamp.
In order to solve the technical problem, the invention provides an online detection fool-proofing method for a cylinder clamp of a CNC (computer numerical control) machine tool, which comprises the following steps:
vertically placing the probe at an initial position with a preset height above the surface of the cylinder clamp;
enabling the probe to move downwards for a preset distance, detecting whether the probe touches a pressing block on the surface of the cylinder clamp in the moving process, and if so, warning a user according to a preset warning mode;
and the length value of the preset distance is smaller than the difference between the preset height and the surface height of the pressing block when the air cylinder is tensioned.
Preferably, after detecting that the probe touches the pressing block during the moving process and before warning the user, the method further comprises the following steps:
and detecting whether an air valve of the air cylinder is closed, if so, warning a user according to a preset warning mode, and if not, scanning foreign matters on the surface of the pressing block and executing corresponding cleaning operation.
Preferably, when the probe moves downwards, the probe is axially kept perpendicular to the surface of the pressing block.
Preferably, the warning of the user according to a preset warning mode specifically includes:
the alarm lamp is made to flash and/or a preset audio file is played.
The invention also provides an on-line detection fool-proofing system for the cylinder clamp of the CNC machine tool, which comprises the following components:
the resetting module is used for vertically placing the probe at an initial position with a preset height above the surface of the cylinder clamp;
the driving module is used for enabling the probe to move downwards for a preset distance;
the first detection module is used for detecting whether the probe touches a pressing block on the surface of the cylinder clamp in the moving process;
the alarm module is used for warning the user according to a preset alarm mode when the detection result of the first detection module is positive;
and the length value of the preset distance is smaller than the difference between the preset height and the surface height of the pressing block when the air cylinder is tensioned.
Preferably, the method further comprises the following steps:
and the second detection module is used for detecting whether the air valve of the air cylinder is closed or not when the detection result of the first detection module is yes, warning a user according to a preset alarm mode if the air valve of the air cylinder is closed, and scanning foreign matters existing on the surface of the pressing block and executing corresponding cleaning operation if the air valve of the air cylinder is not closed.
The invention also provides a CNC machine tool, which comprises a supporting table, a workbench arranged on the supporting table, a cylinder clamp arranged on the workbench, a cylinder arranged in the cylinder clamp, a pressing block arranged on the surface of the cylinder clamp and connected with an expansion link of the cylinder, a spindle slidably arranged on the surface of the workbench, a probe arranged at the tail end of the spindle and capable of moving vertically, a signal receiver arranged on the workbench and used for receiving a signal sent by the probe, a controller in signal connection with the workbench, and an on-line detection foolproof system for the cylinder clamp arranged in the controller and provided by any one of the two items.
Preferably, a pressure sensor is disposed within the probe.
The invention provides an on-line detection fool-proofing method for a cylinder clamp of a CNC (computer numerical control) machine tool, which mainly comprises two steps, wherein the core is that the working state of a cylinder is detected through a probe. In the second step, the probe is displaced in the vertical direction after being positioned, and moves downwards for a preset distance, and in the process of moving downwards, the probe can detect whether a pressing block on the surface of the cylinder clamp is touched in the stroke or not in a specific detection mode. The pressing block lifts or descends along with the movement of the telescopic rod of the air cylinder, when the air cylinder is in a tensioning state, the pressing block is tightly attached to the surface of the air cylinder clamp, and when the air cylinder is in a pushing state, the pressing block is not tightly attached to the surface of the air cylinder clamp but lifted to a certain height. The probe moves down the in-process and is used for detecting whether touch the briquetting, and it is important, the length value of the predetermined distance that the probe moved down is less than the difference between the predetermined height of its initial position and the surface height of the briquetting when the cylinder is taut, so, can avoid the probe directly to move down to the briquetting surface when the cylinder is taut and cause the misjudgment, in the predetermined distance length that this section moved down, if the cylinder is not in taut state, must jack up the briquetting a certain distance for the position of briquetting is in this section predetermined distance length, thereby touch by it in the in-process that the probe moved down. And if the probe detects that the probe touches the surface of the pressing block, the current cylinder is not tensioned and still in a push-open state, and at the moment, a user is warned according to a preset warning mode so as to remind a technician to perform corresponding processing in time. Therefore, the on-line detection fool-proofing method for the cylinder clamp provided by the invention can accurately judge the working state of the cylinder clamp in real time, and remind a user of carrying out corresponding operation in time, so that safety accidents are prevented.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
FIG. 1 is a flow chart of one embodiment of the present invention;
FIG. 2 is a block diagram of one embodiment of the present invention;
FIG. 3 is a block diagram of one embodiment of the present invention;
FIG. 4 is a schematic diagram of the probe detection when the cylinder is under tension in one embodiment of the present invention;
fig. 5 is a schematic diagram illustrating the detection of the probe when the cylinder is in the push-away state according to an embodiment of the present invention.
Wherein, in fig. 2-5:
the device comprises a probe-1, a cylinder clamp-2, a pressing block-3, a cylinder-4, a supporting table-5, a workbench-6, a main shaft-7, a signal receiver-8, a controller-9, a reset module-10, a driving module-11, a first detection module-12, an alarm module-13 and a second detection module-14.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, fig. 1 is a schematic overall structure diagram of an embodiment of the present invention.
In a specific embodiment provided by the invention, the online detection fool-proofing method for the cylinder clamp of the CNC machine tool mainly comprises two steps, which are respectively as follows: vertically placing the probe at an initial position with a preset height above the surface of the cylinder clamp; enabling the probe to move downwards for a preset distance, detecting whether the probe touches a pressing block on the surface of the cylinder clamp in the moving process, and if so, warning a user according to a preset warning mode; wherein, the length value of the preset distance is smaller than the difference between the preset height and the surface height of the pressing block when the air cylinder is tensioned.
In the first step, the probe is first positioned above the surface of the cylinder fixture, and has a preset height from the surface of the cylinder fixture, and the preset height is set as an initial position of the probe, and meanwhile, the probe needs to be vertically arranged for subsequent movement and detection.
In the second step, the probe is displaced in the vertical direction after being positioned, and moves downwards for a preset distance, and in the process of moving downwards, the probe can detect whether a pressing block on the surface of the cylinder clamp is touched in the stroke or not in a specific detection mode. Meanwhile, when the probe moves downwards, the state of the cylinder needs to be detected through the touch of the end part of the probe and the surface of the pressing block, so that the axial direction of the probe can be always vertical to the surface of the pressing block when the probe moves. The pressing block lifts or descends along with the movement of the telescopic rod of the air cylinder, when the air cylinder is in a tensioning state, the pressing block is tightly attached to the surface of the air cylinder clamp, and when the air cylinder is in a pushing state, the pressing block is not tightly attached to the surface of the air cylinder clamp but lifted to a certain height.
The probe moves down the in-process and is used for detecting whether touch the briquetting, and it is important, the length value of the predetermined distance that the probe moved down is less than the difference between the predetermined height of its initial position and the surface height of the briquetting when the cylinder is taut, so, can avoid the probe directly to move down to the briquetting surface when the cylinder is taut and cause the misjudgment, in the predetermined distance length that this section moved down, if the cylinder is not in taut state, must jack up the briquetting a certain distance for the position of briquetting is in this section predetermined distance length, thereby touch by it in the in-process that the probe moved down. And if the probe detects that the probe touches the surface of the pressing block, the current cylinder is not tensioned and still in a push-open state, and at the moment, a user is warned according to a preset warning mode so as to remind a technician to perform corresponding processing in time.
Therefore, the on-line detection fool-proofing method for the cylinder clamp provided by the embodiment can accurately judge the working state of the cylinder clamp in real time, and timely remind a user of carrying out corresponding operation, so that safety accidents are prevented.
In addition, in order to improve the accuracy of the result of detecting the state of the cylinder through the probe, in this embodiment, after the probe touches the pressing block in the moving process, the correction detection operation is continued, specifically, whether the air valve of the cylinder is closed or not can be detected, if so, it is indicated that the air valve of the cylinder is actually closed, and the cylinder is in the push-open state, and the result is detected by the probe to be a normal result, so that the reliability is high. If not, the air valve of the air cylinder is not closed, but is in an open state, the air cylinder is tensioned at the moment, the probe is not touched with the pressure block under normal conditions, however, the detection feedback of the probe does have a touch condition, the condition indicates that foreign matters such as impurities, chips and the like generated in cutting machining exist on the pressure block, the surface condition of the pressure block can be scanned, and corresponding cleaning operation such as spraying cleaning liquid or cooling liquid and the like can be executed.
In addition, when the probe detects that the air cylinder is in a push-open state and the air valve is closed, an alarm can be given out through sound and light alarms and the like, for example, the installed alarm and the like twinkle, or/and a preset audio file is played to remind technicians to pay attention.
The embodiment also provides a cylinder clamp online detection fool-proofing system of the CNC machine tool, which mainly comprises a resetting module, a driving module, a first detection module and an alarm module. The resetting module is mainly used for vertically placing the probe at an initial position with a preset height above the surface of the cylinder clamp; the driving module is mainly used for enabling the probe to move downwards for a preset distance; the first detection module is mainly used for detecting whether the probe touches a pressing block on the surface of the cylinder clamp in the moving process; the alarm module is mainly used for warning the user according to a preset alarm mode when the detection result of the first detection module is yes. And the length value of the preset distance is smaller than the difference between the preset height and the surface height of the pressing block when the air cylinder is tensioned.
The detection method of the cylinder clamp online detection fool-proof system is the same as the above-mentioned method, and the details are not repeated here.
In addition, in order to improve the reliability of the detection result, a second detection module is further added in the embodiment. Specifically, the second detection module is mainly used for detecting whether the air valve of the air cylinder is closed or not when the detection result of the first detection module is yes, if so, warning a user according to a preset alarm mode, and if not, scanning foreign matters existing on the surface of the pressing block and executing corresponding cleaning operation.
This embodiment still provides a CNC lathe, mainly includes brace table, workstation, cylinder anchor clamps, cylinder, briquetting, main shaft, probe, signal receiver, controller and cylinder anchor clamps on-line measuring and prevents slow-witted system, and wherein, the workstation sets up on the brace table, and cylinder anchor clamps set up on the workstation, and the cylinder sets up inside cylinder anchor clamps, and the briquetting setting is continuous on the surface of cylinder anchor clamps and with the telescopic link of cylinder. The spindle is slidable on the surface of the table, and the probe is disposed at the end of the spindle and is vertically movable. The probe is internally provided with a pressure sensor and other components which can be used for detecting whether an object is touched. The signal receiver is arranged on the workbench and keeps communication with the probe, when the probe touches an object, the probe sends a specific signal to the signal receiver, the controller is in signal connection with the workbench, and the signal receiver can send the signal to the controller through the workbench. The cylinder clamp online detection fool-proof system is the same as the related content, and the details are not repeated here.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (3)
1. The utility model provides a cylinder anchor clamps on-line measuring of CNC lathe prevents slow-witted method which characterized in that includes:
vertically placing the probe (1) at an initial position with a preset height above the surface of the cylinder clamp (2);
enabling the probe (1) to move downwards for a preset distance, detecting whether the probe touches a pressing block (3) on the surface of the cylinder clamp (2) in the moving process, and if so, warning a user according to a preset warning mode;
wherein the length value of the preset distance is smaller than the difference between the preset height and the surface height of the pressing block (3) when the air cylinder (4) is tensioned;
after detecting that the probe (1) touches the pressing block (3) in the moving process and before warning a user, the method further comprises the following steps:
detecting whether an air valve of the air cylinder (4) is closed to carry out correction detection operation, if so, warning a user according to a preset warning mode, and if not, scanning foreign matters existing on the surface of the pressing block (3) and executing corresponding cleaning operation;
when the probe (1) moves downwards, the probe (1) is axially kept vertical to the surface of the pressing block (3);
warning the user according to a preset warning mode, and specifically comprising the following steps:
the alarm lamp is made to flash and/or a preset audio file is played.
2. The utility model provides a slow-witted system is prevented in cylinder anchor clamps on-line measuring of CNC lathe which characterized in that includes:
the resetting module is used for vertically placing the probe (1) at an initial position with a preset height above the surface of the cylinder clamp (2);
the driving module is used for enabling the probe (1) to move downwards for a preset distance;
the first detection module is used for detecting whether the probe (1) touches a pressing block (3) on the surface of the cylinder clamp (2) in the moving process;
the alarm module is used for warning the user according to a preset alarm mode when the detection result of the first detection module is positive;
wherein the length value of the preset distance is smaller than the difference between the preset height and the surface height of the pressing block (3) when the air cylinder (4) is tensioned;
further comprising:
and the second detection module is used for detecting whether the air valve of the air cylinder (4) is closed or not when the detection result of the first detection module is yes, warning a user according to a preset alarm mode if the air valve of the air cylinder is closed, scanning foreign matters existing on the surface of the pressing block (3) if the air valve of the air cylinder is not closed, and executing corresponding cleaning operation.
3. A CNC machine tool is characterized by comprising a supporting table (5), a workbench (6) arranged on the supporting table (5), a cylinder clamp (2) arranged on the workbench (6), a cylinder (4) arranged in the cylinder clamp (2), a pressing block (3) arranged on the surface of the cylinder clamp (2) and connected with an expansion link of the cylinder (4), a spindle (7) arranged on the surface of the workbench (6) in a sliding manner, a probe (1) arranged at the tail end of the spindle (7) and capable of moving vertically, a signal receiver (8) arranged on the workbench (6) and used for receiving a signal sent by the probe (1), and a controller (9) in signal connection with the workbench (6), and an on-line cylinder clamp detection fool-proofing system according to claim 2, arranged in the controller (9);
a pressure sensor is arranged in the probe (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710930573.8A CN107717559B (en) | 2017-10-09 | 2017-10-09 | CNC machine tool and online detection fool-proof method and system for cylinder clamp of CNC machine tool |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710930573.8A CN107717559B (en) | 2017-10-09 | 2017-10-09 | CNC machine tool and online detection fool-proof method and system for cylinder clamp of CNC machine tool |
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| Publication Number | Publication Date |
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| CN107717559A CN107717559A (en) | 2018-02-23 |
| CN107717559B true CN107717559B (en) | 2020-01-17 |
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| CN201710930573.8A Active CN107717559B (en) | 2017-10-09 | 2017-10-09 | CNC machine tool and online detection fool-proof method and system for cylinder clamp of CNC machine tool |
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| EP0316261A2 (en) * | 1987-11-12 | 1989-05-17 | Rayco Manufacturing, Inc. | Universal vacuum and clamp setup fixture for coordinate measuring machines |
| CN1145286A (en) * | 1995-09-11 | 1997-03-19 | 村田机械株式会社 | Detecting apparatus for abnormalities in work holder |
| CN103257373A (en) * | 2013-04-22 | 2013-08-21 | 宁波天龙电子股份有限公司 | Device for automatically detecting whether components are left out of installation |
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| CN107717559A (en) | 2018-02-23 |
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