Quick-changing device for end clamp of numerical control machine tool capable of automatically adjusting alignment center
Technical Field
The invention relates to the technical field of machine tool parts, in particular to a quick-changing device for a numerical control machine tool tail end clamp capable of automatically adjusting a center.
Background
The quick-change device for the clamp at the tail end of the numerical control machine tool is a key connecting component, so that the tool at the tail end of the numerical control machine tool can be quickly changed between different machining scenes, and the working efficiency and the flexibility are greatly improved;
Such devices typically consist of a connection interface, a locking mechanism, a drive system, a communication module, etc.;
the quick-change device enables the numerical control machine tool to adapt to various complex machining requirements and quickly switches machining tools of the numerical control machine tool;
The connecting part of the quick-change device at the tail end of the numerical control machine tool is gradually worn in the frequent plugging and unlocking processes, the fit clearance is increased, the originally tight connection becomes loose, the position is deviated, the numerical control machine tool is vibrated and impacted during working, and the connecting part is slightly displaced or deformed under the long-term action, so that the connection precision is reduced, and the limitation is further caused.
Therefore, we propose a quick-change device for the end fixture of a numerical control machine tool, which automatically adjusts the alignment center.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a quick-changing device for a numerical control machine tool end clamp capable of automatically adjusting a centering, which overcomes the defects of the prior art and aims at solving the problems in the background art.
The quick-changing device for the numerical control machine tool tail end clamp capable of automatically adjusting the alignment center comprises a machine tool connecting disc, a gas-liquid connecting port and a circuit connecting port, wherein a connecting groove is formed in the machine tool connecting disc, a connecting block is connected onto the tool connecting disc in a sliding mode, a jacking cylinder is fixedly connected onto the tool connecting disc, an ejection block is connected onto the tool connecting disc in a sliding mode, a jacking cylinder is also arranged in the connecting groove, the output end of the jacking cylinder pushes the connecting block, a positioning groove is formed in the tool connecting disc, and a positioning block is fixedly connected onto the machine tool connecting disc;
The positioning rod is arranged on the machine tool connecting disc, the positioning rod is located at the center of the machine tool connecting disc, the tool connecting disc is provided with a detection mechanism and a fine adjustment mechanism, the detection mechanism is in contact with the positioning rod and detects the positions of the tool connecting disc and the machine tool connecting disc, and the fine adjustment mechanism adjusts the position of the tool connecting disc according to the position deviation detected by the detection mechanism so that the tool connecting disc is located at the center of the machine tool connecting disc.
Preferably, the detection mechanism comprises a detection rod, a detection spring and a detection pressure sensor, wherein detection grooves are formed in the tool connecting disc, the detection grooves are uniformly formed in the tool connecting disc, the detection pressure sensor is fixedly connected in the detection grooves, one end of the detection spring is fixedly connected with the detection pressure sensor, and the other end of the detection spring is fixedly connected with the detection rod.
The fine adjustment mechanism comprises a fine adjustment motor and a fine adjustment block, an adjustment groove is formed in the tool connecting disc, the fine adjustment block is connected in the adjustment groove in a sliding mode, the fine adjustment motor is fixedly connected in the adjustment groove, and a screw rod in threaded fit with the fine adjustment block is fixedly connected to the output end of the fine adjustment motor.
The position of the tool connecting disc relative to the machine tool connecting disc is detected by arranging the detection rod and the detection pressure sensor in the tool connecting disc, and the position of the tool connecting disc is adjusted to the center of the machine tool connecting disc by pushing the fine adjustment block, so that when the machine tool connecting disc and the tool connecting disc are worn, the position after installation is deviated, and the precision error is reduced.
Preferably, a rotating rod is fixedly connected in the detection groove, the detection rod is rotatably connected to the rotating rod, the rotating rod divides the detection rod into two sections, and the length of one section, close to the detection spring, is larger than the length of one end, far away from the detection spring.
Preferably, the front end of the detection rod is bent to an arc shape to the outside.
Preferably, the positioning rod is detachably mounted on the machine tool connecting disc.
Preferably, annular grooves are formed in the machine tool connecting disc and the tool connecting disc, annular blocks are connected in a sliding mode in the annular grooves, and the gas-liquid connecting port and the circuit connecting port are fixedly connected to the annular blocks.
The detection rod is connected in a rotating way, so that the detection rod is equivalent to a lever, the error of the tool connecting disc is amplified and transmitted to the detection pressure sensor, and the detection precision is improved, so that the situation that the position deviation of the tool connecting disc is smaller and the pressure change transmitted to the detection pressure sensor is smaller is prevented, and the detection precision of the detection pressure sensor is improved.
The invention has the beneficial effects that:
1. According to the invention, the position of the tool connecting disc relative to the machine tool connecting disc is detected by arranging the detection rod and the detection pressure sensor in the tool connecting disc, and then the position of the tool connecting disc is adjusted to the center of the machine tool connecting disc by pushing the fine adjustment block, so that when the machine tool connecting disc and the tool connecting disc are worn, the position after installation is deviated, and the precision error is reduced by adjusting the tool connecting disc.
2. According to the invention, the detection rod is rotationally connected, so that the detection rod is equivalent to a lever, the error of the tool connecting disc is amplified and transmitted to the detection pressure sensor, and the detection precision is improved, so that the situation that the position deviation of the tool connecting disc is smaller and the pressure change transmitted to the detection pressure sensor is smaller is prevented, and the detection precision of the detection pressure sensor is improved.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic view of another view of the present invention;
FIG. 3 is a schematic view of the structure of the tool attachment of the present invention in a partially cut-away state;
FIG. 4 is an enlarged view of FIG. 3 at A;
FIG. 5 is an enlarged view at B in FIG. 3;
Fig. 6 is a cross-sectional view of a machine tool interface according to the present invention.
The device comprises a machine tool connecting disc 1, a tool connecting disc 2, a gas-liquid connecting port 11, a circuit connecting port 13, a connecting groove 21, a connecting block 22, a jacking cylinder 23, a positioning groove 24, a positioning block 25, a positioning rod 3, a detection rod 31, a detection spring 32, a detection pressure sensor 33, a detection groove 34, a rotating rod 4, a fine adjustment motor 41, a fine adjustment block 42, an adjustment groove 5, an annular groove 51, an annular block 6 and a jacking block.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to the accompanying drawings of 1,2, 3, 4 and 6 in the specification, the quick-change device for the end clamp of the numerical control machine tool capable of automatically adjusting the alignment center comprises a machine tool connecting disc 1, a tool connecting disc 2, a gas-liquid connecting port 11 and a circuit connecting port 12, wherein a connecting groove 13 is formed in the machine tool connecting disc 1, a connecting block 21 is connected onto the tool connecting disc 2 in a sliding manner, a jacking air cylinder 22 is fixedly connected onto the tool connecting disc 2, an ejection block 6 is connected onto the connecting groove 13 in a sliding manner, a jacking air cylinder 22 is also arranged in the connecting groove 13, the output end of the jacking air cylinder 22 pushes the connecting block 21, a positioning groove 23 is formed in the tool connecting disc 2, and a positioning block 24 is fixedly connected onto the machine tool connecting disc 1;
The positioning rod 25 is arranged on the machine tool connecting disc 1, the positioning rod 25 is positioned at the center of the machine tool connecting disc 1, the detection mechanism and the fine adjustment mechanism are arranged on the tool connecting disc 2, the detection mechanism is in contact with the positioning rod 25 to detect the positions of the tool connecting disc 2 and the machine tool connecting disc 1, and the fine adjustment mechanism adjusts the position of the tool connecting disc 2 according to the position deviation detected by the detection mechanism so that the tool connecting disc 2 is positioned at the center of the machine tool connecting disc 1.
The detection mechanism comprises a detection rod 3, a detection spring 31 and a detection pressure sensor 32, wherein a detection groove 33 is formed in a tool connecting disc 2, the detection groove 33 is uniformly formed in the tool connecting disc 2, the detection pressure sensor 32 is fixedly connected in the detection groove 33, one end of the detection spring 31 is fixedly connected with the detection pressure sensor 32, and the other end of the detection spring is fixedly connected with the detection rod 3.
The fine adjustment mechanism comprises a fine adjustment motor 4 and a fine adjustment block 41, an adjustment groove 42 is formed in a tool connecting disc 2, the fine adjustment block 41 is connected in the adjustment groove 42 in a sliding mode, the fine adjustment motor 4 is fixedly connected in the adjustment groove 42, and a screw rod in threaded fit with the fine adjustment block 41 is fixedly connected to the output end of the fine adjustment motor 4.
In the invention, when a machine tool connecting disc 1 and a tool connecting disc 2 are connected together, a connecting block 21 in the tool connecting disc 2 stretches into a connecting groove 13 under the pushing of a corresponding jacking cylinder 22, so that the connecting block 21 is clamped in the connecting groove 13, the machine tool connecting disc 1 and the tool connecting disc 2 are connected together, a gas-liquid connecting port 11 and a circuit connecting port 12 on the machine tool connecting disc 1 and the tool connecting disc 2 are connected with each other, a detection rod 3 is contacted with a positioning rod 25, and a fine adjustment block 41 on the tool connecting disc 2 is contacted with the machine tool connecting disc 1;
When the tool connecting disc 2 is replaced, firstly, the corresponding screw rod is driven by the fine adjustment motor 4 on the tool connecting disc 2 to reversely rotate, so that the fine adjustment block 41 is retracted into the adjustment groove 42, the connection block 21 is pushed out of the connection groove 13 by the ejection block 6, so that the connection between the tool connecting disc 1 and the tool connecting disc 2 is released, after the tool connecting disc 2 is removed from the tool connecting disc 1, the tool connecting disc 2 which is required to be used is placed above the tool connecting disc 1, then the tool connecting disc 2 moves downwards, the detection rod 3 on the tool connecting disc 2 is contacted with the side wall of the positioning rod 25 on the tool connecting disc 1, and after the positioning rod 25 is positioned at the center of the tool connecting disc 1, the detection rod 3 is positioned at the center of the tool connecting disc 1 through the detection spring 31, the force transmitted to the detection connecting disc 32 is equal, and if the force is inconsistent, the position of the tool connecting disc 2 and the tool connecting disc 1 is deviated, the fine adjustment motor 4 drives the corresponding screw rod to extend out of the adjustment groove 42, the position of the tool connecting disc 2 is contacted with the tool connecting disc 1, the position of the tool connecting disc 2 is adjusted through pushing of the fine adjustment block 41, so that the tool connecting disc 2 is positioned at the center of the tool connecting disc 1 is positioned at the center of the positioning rod 25, and then the connecting disc 21 is connected with the connecting disc 13 in the pneumatic cylinder;
According to the invention, the position of the tool connecting disc 2 relative to the machine tool connecting disc 1 is detected by arranging the detection rod 3 and the detection pressure sensor 32 in the tool connecting disc 2, and then the position of the tool connecting disc 2 is adjusted to the center of the machine tool connecting disc 1 by pushing the fine adjustment block 41, so that when the machine tool connecting disc 1 and the tool connecting disc 2 are worn, the position after installation is deviated, and the precision error is reduced by adjusting the tool connecting disc.
In the second embodiment, referring to fig. 2,3, 5 and 6 of the specification, in the present invention, a rotating rod 34 is fixedly connected in a detection groove 33, the detecting rod 3 is rotatably connected to the rotating rod 34, the rotating rod 34 divides the detecting rod 3 into two sections, and a section of the detecting rod near the detecting spring 31 has a length greater than that of a section far from the detecting spring 31.
In the present invention, the front end of the detection lever 3 is curved outward in an arc shape.
In the invention, the positioning rod 25 is detachably arranged on the machine tool connecting disc 1.
In the invention, annular grooves 5 are formed on a machine tool connecting disc 1 and a tool connecting disc 2, an annular block 51 is connected in a sliding way in the annular grooves 5, and a gas-liquid connecting port 11 and a circuit connecting port 12 are fixedly connected on the annular block 51.
In the invention, the detecting rod 3 is rotatably connected in the detecting groove 33, and the length of one end close to the detecting pressure sensor 32 is longer than the length of one end far away from the pressure sensor, so after the detecting rod 3 contacts with the positioning rod 25, the detecting rod 3 is equivalent to a lever, the position deviation of the tool connecting disc 2 can be amplified and transferred to the detecting pressure sensor 32, the detecting pressure sensor 32 receives the tensile force of the detecting spring 31, when the tensile force received by the detecting pressure sensor 32 on one side is greater than that on the other side, the position of the tool connecting disc 2 is indicated to deviate towards the opposite direction, and the fine adjusting block 41 pushes the tool connecting disc 2 to move towards the direction close to the detecting pressure sensor 32;
in the invention, the positioning rod 25 is in threaded connection with the machine tool connecting disc 1, after a period of use, the positioning rod 25 is unscrewed and a new positioning rod 25 is replaced, so that the positioning rod 25 is prevented from being worn after long-time use, the positioning effect is deviated, and the use effect of the invention is further influenced;
In the invention, the gas-liquid connection port 11 and the circuit connection port 12 are arranged on the annular block 51 and can move along with the annular block 51, so that when the position of the tool connection disc 2 is adjusted, the tool connection disc 2 can slide relative to the annular block 51, thereby not affecting the gas-liquid connection port 11 and the circuit connection port 12, and preventing the situation that the movement of the tool connection disc 2 is affected after the gas-liquid connection port 11 and the circuit connection port 12 on the machine tool connection disc 1 and the tool connection disc 2 are connected;
According to the invention, the detection rod 3 is rotationally connected, so that the detection rod 3 is equivalent to a lever, the error of the tool connecting disc 2 is amplified and transmitted to the detection pressure sensor 32, and the detection precision is improved, so that the situation that the position deviation of the tool connecting disc 2 is smaller and the pressure change transmitted to the detection pressure sensor 32 is smaller is prevented, and the detection precision of the detection pressure sensor 32 is improved.
The foregoing has shown and described the basic principles, principal features and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the foregoing embodiments, which have been described in the foregoing embodiments and description merely illustrates the principles of the invention, and that various changes and modifications may be effected therein without departing from the spirit and scope of the invention as defined in the appended claims and their equivalents.