Quick positioning and fixing device for numerical control boring and milling machine and fixing method of quick positioning and fixing device

Abstract

The invention relates to the technical field of lathe fixing equipment, and discloses a numerical control boring and milling machine rapid positioning and fixing device and a fixing method thereof.The numerical control boring and milling machine rapid positioning and fixing device comprises a body, two pneumatic frames are slidably connected to the top of the body, a hollow frame is fixedly connected to the tops of the pneumatic frames, and an inner ring is fixedly connected to the interior of the hollow frame; a plurality of rectangular grooves are formed in the inner wall of the inner ring. When the extrusion block clamps a workpiece, the extrusion block can be well attached to the outer surface of the workpiece, the stability of the workpiece in the machining process can be improved through the wrapping fixing mode, the workpiece is prevented from shifting or deforming in the machining process, and compared with a traditional bolt fixing mode, the machining efficiency is improved. According to the device, the workpiece can be quickly positioned and fixed through rotation of the internal thread block, the time for installing and adjusting the workpiece is shortened, and therefore the machining efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of lathe fixing equipment, in particular to a fast positioning and fixing device for a numerically controlled boring and milling machine and a fixing method thereof. Background Art

[0002] CNC boring and milling machine is a combination milling machine that can be used for large-surface milling of castings, steel parts and non-ferrous metal parts. The main features of CNC gantry boring and milling machine are good rigidity, high precision and high efficiency. With appropriate milling cutter disc, the cutting speed can reach 800mm per minute. The maximum cutting depth is 8-10mm, which can achieve efficient cutting processing. It can be used for large-surface milling of castings, steel parts and non-ferrous metal parts. It is generally used in the production line of box parts in diesel engine, tractor and other industries, and can meet the production capacity requirements of 100,000 to 200,000 units per year.

[0003] Generally, existing fixing devices usually fix the clamp on the workbench by bolts and nuts, and then press the workpiece on the surface of the clamp with a pressure plate and bolts. When fixing a cylindrical workpiece by bolts, it takes a long time to adjust the workpiece by loosening and tightening the bolts. The positioning process may be complicated and take a long time, and it will also affect the fixing efficiency and processing efficiency of the workpiece. Summary of the invention

[0004] The object of the present invention is to provide a fast positioning and fixing device for a CNC boring and milling machine and a fixing method thereof, so as to solve the problems raised in the above-mentioned background technology.

[0005] In order to solve the above technical problems, the present invention is achieved through the following technical solutions:

[0006] The invention is a fast positioning and fixing device for a numerically controlled boring and milling machine, comprising a main body, the top of which is slidably connected to two pneumatic frames, the top of which is fixedly connected to a hollow frame, the interior of the hollow frame is fixedly connected to an inner ring, the inner wall of the inner ring is provided with a plurality of rectangular grooves, and further comprising;

[0007] The pushing mechanism includes a fixed cylinder fixedly connected to the inner wall of the hollow frame away from the inner ring, the outer surface of the fixed cylinder is slidably connected with a spring cylinder, the inner wall of the spring cylinder close to the inner ring is fixedly connected with a raised rod, the outer surface of the raised rod is rotatably connected with a fan cylinder, the inner wall of the fan cylinder is provided with a threaded groove, the protrusion on the outer surface of the raised rod is slidably connected in the threaded groove, the outer surface of the fan cylinder is rotatably connected with a cross, the cross is fixedly connected to the inside of the spring cylinder, the outer surface of the fan cylinder is provided with a right-angle groove, the inside of the right-angle groove is slidably connected with an extrusion plate, the outer surface of the extrusion plate is slidably connected to the inside of the fixed cylinder, the inner wall of the fixed cylinder is fixedly connected with a conical cylinder, and the outer surface of the fixed cylinder is provided with a plurality of square grooves.

[0008] The expansion mechanism includes a fixed ring fixedly connected to the outer surface of the fixed cylinder, the outer surface of the fixed ring is rotatably connected to a plurality of hollow bars, the inside of the hollow bars is rotatably connected to an L-plate, the end of the L-plate away from the fixed cylinder is rotatably connected to an arc-shaped rubber plate, and the side of the L-plate close to the spring cylinder is rotatably connected to a movable plate.

[0009] Furthermore, the movable plate is rotatably connected to the outer surface of the spring tube at one side close to the spring tube, the outer surface of the hollow bar is rotatably connected to a telescopic rod, the L plate is connected to the fixed tube, and the L plate is connected to the arc-shaped rubber plate.

[0010] Furthermore, a rotating mechanism is provided on the outer surface of the telescopic rod, and the rotating mechanism includes a fixed frame slidably connected to the outer surfaces of several telescopic rods, the outer surface of the internally threaded gear cylinder is rotatably connected to the internally threaded gear cylinder, the outer surface of the telescopic rod is fixedly connected to a convex rod, the convex rod is slidably connected to the groove inside the internally threaded gear cylinder, the outer surfaces of several internally threaded gear cylinders are meshingly connected to gear rings, the gear rings are rotatably connected to the outer surface of the fixed frame, the outer surface of the gear rings is slidably connected to several internally threaded blocks, and one end of the internally threaded gear cylinder away from the fixed cylinder is fixedly connected to a friction rod.

[0011] Furthermore, an auxiliary mechanism is provided on the outer surface of the gear ring, which includes two L-bars rotatably connected to the side wall of the internal threaded block, an intermediate frame rotatably connected between the two L-bars, a hollow plate fixedly connected to the top of the intermediate frame, two rotating plates rotatably connected inside the hollow plate, an arc plate rotatably connected between the two rotating plates, an extrusion block fixedly connected to the top of the arc plate, and two semicircular blocks rotatably connected to the side wall of the extrusion block.

[0012] Furthermore, a contraction mechanism is provided inside the hollow frame, and the contraction mechanism includes a rotating ring rotatably connected to the inside of the inner ring, an arc groove is provided on the outer surface of the rotating ring, a plurality of rotating blocks are rotatably connected to the inner wall of the rotating ring, a sliding rod is slidably connected to the inside of the arc groove, the top of the sliding rod is slidably connected to the rectangular groove on the inner wall of the inner ring, an end of the sliding rod away from the inner ring is rotatably connected to an arc plate 2, the top of the arc plate 2 is rotatably connected to a spring shaft, an end of the spring shaft away from the arc plate 2 is slidably connected to the rectangular groove, and the side wall of the rotating ring is in contact with the outer surface of the friction rod.

[0013] Furthermore, a winding mechanism is provided on the side wall of the second arc plate, which includes a giant wheel shaft rotatably connected to the side wall of the sliding rod, the outer surface of the giant wheel shaft is rotatably connected to an outer frame, the inner part of the outer frame is slidably connected to a spring plate, and an elastic belt is slidably connected between the two giant wheel shafts.

[0014] Furthermore, a cleaning mechanism is provided inside the main body, and the cleaning mechanism includes a spherical chain rotatably connected to the two side walls of a plurality of arc-shaped plates, a plurality of air outlet holes are provided on the outer surface of the spherical chain, a plurality of connecting shafts are fixedly connected to the outer surface of the spherical chain, a side of the connecting shaft close to the elastic band is fixedly connected to the side wall of the elastic band, a plurality of elastic membranes are fixedly connected to the inside of the spherical chain, and a plurality of conical holes are provided inside the spherical chain.

[0015] Furthermore, a method for using a fast positioning and fixing device for a CNC boring and milling machine is provided, wherein the method comprises the following steps:

[0016] S1: First, place the device at the bottom of the processing device to be processed, then adjust the distance between the two pneumatic racks, and then place the workpiece to be processed between the two inner rings;

[0017] S2: After that, the distance between the two main bodies is adjusted, and then the pneumatic frame is connected to the external air pump, and then the external air pump is started to fix the pneumatic frame tightly on the main body, thereby completing the fixation of the workpiece.

[0018] The present invention has the following beneficial effects:

[0019] 1. In the present invention, when the L-plate moves and the hollow bar is pushed to rotate by the L-plate, the rotation of the hollow bar will drive the telescopic rod to move backward. When the telescopic rod moves backward, the convex rod on its surface will slide in the thread groove inside the internal threaded gear cylinder and drive the internal threaded gear cylinder to rotate through sliding. When the internal threaded gear cylinder rotates, it will drive the gear ring to rotate synchronously. When the gear ring rotates, it will drive the internal thread block to rotate by sliding its surface inside the internal thread block. When the internal thread block rotates, it will drive the intermediate frame to rotate through the L-bar and rotate to the surface of the workpiece. When the intermediate frame rotates to the surface of the workpiece, the workpiece will squeeze the rotating plate. After the rotating plate is squeezed, its bottom will squeeze the arc plate to make the middle part move upward. The bulge deformation, the arc plate will push the extrusion block after deformation so that the semicircular block on the extrusion block clamps the workpiece. Since there are multiple hollow plates and they are evenly distributed on the surface of the workpiece, when the extrusion block in the middle frame extrudes the workpiece, multiple extrusion blocks will clamp the workpiece on the surface of the workpiece. At the same time, when the extrusion block clamps the workpiece, it can fit well on the outer surface of the workpiece. This wrapping and fixing method can improve the stability of the workpiece during the processing and prevent the workpiece from shifting or deforming during the processing. Compared with the traditional bolt fixing method, this device can quickly position and fix the workpiece by rotating the internal thread block, shortening the time for workpiece installation and adjustment, thereby improving processing efficiency.

[0020] 2. In the present invention, when the workpiece is placed in the inner ring and the distance between the two pneumatic frames is moved, the workpiece will squeeze the spring tube, and after the spring tube is squeezed, the spring tube will squeeze the push L plate through the movable plate, and after the L plate is squeezed, it will drive the hollow bar to rotate on the surface of the fixed ring, and then when the movable plate squeezes the L plate, the L plate will rotate inside the hollow bar and drive the arc-shaped rubber plate on the top to relatively squeeze the surface of the workpiece. At the same time, when the spring tube is squeezed by the workpiece and moves, the movement of the spring tube will drive the raised rod to slide inside the fan tube, and when the raised rod slides, it will drive the fan tube to move on the spring tube through the convexity on the surface. The fan cylinder rotates inside, and the fan cylinder absorbs the external gas through the square groove on the outer surface of the fixed cylinder and enters the fixed cylinder through the tapered cylinder. At the same time, when the fan cylinder rotates, the rotation of the fan cylinder will drive the extrusion plate to move in the direction of the raised rod through the right-angle groove and squeeze the gas. After being squeezed, the gas will enter the arc-shaped rubber plate through the L plate and expand and fit the surface of the workpiece, guiding the workpiece to the center position, realizing fast and accurate preliminary positioning, which helps to reduce the position deviation of the workpiece in the hollow cylinder. At the same time, relying on the relative extrusion of the workpiece by the arc-shaped rubber plate can reduce the shaking and displacement of the workpiece during the processing, thereby improving the processing accuracy.

[0021] 3. In the present invention, when the sliding of the telescopic rod drives the internal threaded gear cylinder to rotate, the rotation of one of the internal threaded gear cylinders will drive the friction rod to rotate, and the friction rod will drive the rotating ring to rotate when rotating. When the rotating ring rotates, it will drive the sliding rod to be squeezed through the arc groove, so that the sliding rod slides in the rectangular groove of the inner wall of the inner ring, and the sliding rod will drive the arc plate 2 to move forward when sliding. At the same time, when the rotating ring rotates, the rotation of the rotating ring will move the outer frame through the rotating block, so that the outer frame and the spring plate drive the giant wheel shaft to rotate, and the giant wheel shaft will reel in the elastic belt when rotating. The elastic belt will become straight and tight when reeling and be wrapped around the surface of the workpiece. This tight state helps to further fix the workpiece and reduce its shaking during processing. At the same time, the tight elastic belt can also absorb and disperse part of the vibration energy, thereby reducing the vibration of the workpiece during processing.

[0022] 4. In the present invention, when the elastic band is wrapped around the surface of the workpiece, the stretched and tightened elastic band will pull the front end of the arc plate 2 through the connecting shaft so that the multiple arc plates 2 move relatively and form a conical tube to drive the spherical chain to cover the surface of the workpiece. After that, when the workpiece vibrates during processing, the vibration of the workpiece will cause the multiple elastic membranes inside the spherical chain to resonate with the external vibration. At this time, the resonance of the elastic membrane will shake back and forth inside the spherical chain. When the elastic membrane shakes inside the spherical chain through the resonance, the shaking of the elastic membrane will absorb the external gas into the spherical chain through the conical hole and blow the waste chips on the workpiece surface at the front end of the arc plate 2 through the blowing hole during shaking, thereby reducing the entry of waste chips and impurities into the surface of the auxiliary mechanism, resulting in increased friction and shaking between the internal components and the surface, affecting the clamping and fixing accuracy of the device for the workpiece and normal operation.

[0023] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for describing the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0025] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0026] Figure 2 It is a schematic diagram of the overall partial cross-sectional structure of the present invention;

[0027] Figure 3 It is a schematic diagram of the main body of the present invention;

[0028] Figure 4 This is a schematic diagram of the structure of the driving mechanism of the present invention;

[0029] Figure 5 For the present invention Figure 6 Enlarged view of point A in the middle;

[0030] Figure 6 It is a schematic diagram of the expansion mechanism structure of the present invention;

[0031] Figure 7 It is a schematic diagram of the structure of the rotating mechanism of the present invention;

[0032] Figure 8 For the present invention Figure 7 Enlarged view of point B in the middle;

[0033] Fig. 9It is a schematic diagram of the structure of the contraction mechanism of the present invention;

[0034] Fig.10 For the present invention Fig.10 Enlarged view of point C in the middle;

[0035] Fig.11 This is an enlarged view of the cleaning mechanism structure of the present invention;

[0036] Fig.12 The figure is a flow chart of the fixing method of the present invention.

[0037] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0038] In the figure: 1. Main body; 101. Pneumatic frame; 102. Hollow frame; 103. Inner ring; 2. Push mechanism; 201. Fixed cylinder; 202. Spring cylinder; 203. Protruding rod; 204. Fan cylinder; 205. Right angle groove; 206. Extrusion plate; 3. Expansion mechanism; 301. Fixed ring; 302. Hollow bar; 303. L plate; 304. Movable plate; 305. Telescopic rod; 4. Rotation mechanism; 401. Fixed frame; 402. Internal threaded cylinder; 403. Gear ring; 404. Internal thread block; 5. Auxiliary mechanism; 501. L-bar; 502. Intermediate frame; 503. Hollow plate; 504. Rotating plate; 505. Arc plate; 506. Extrusion block; 6. Contraction mechanism; 601. Rotating ring; 602. Sliding rod; 603. Arc plate 2; 604. Rotating block; 7. Winding mechanism; 701. Giant wheel shaft; 702. Outer frame; 703. Spring plate; 704. Elastic belt; 8. Cleaning mechanism; 801. Ball chain; 802. Connecting shaft; 803. Elastic membrane. DETAILED DESCRIPTION

[0039] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0040] See also Figure 1-Figure 11 As shown, the present invention is a fast positioning and fixing device for a CNC boring and milling machine, comprising a main body 1, the top of the main body 1 is slidably connected to two pneumatic frames 101, the top of the pneumatic frames 101 is fixedly connected to a hollow frame 102, the inside of the hollow frame 102 is fixedly connected to an inner ring 103, the inner wall of the inner ring 103 is provided with a plurality of rectangular grooves, and further comprising;

[0041] The pushing mechanism 2 includes a fixed cylinder 201 fixedly connected to the inner wall of the hollow frame 102 away from the inner ring 103, the outer surface of the fixed cylinder 201 is slidably connected with a spring cylinder 202, the inner wall of the spring cylinder 202 close to the inner ring 103 is fixedly connected with a raised rod 203, the outer surface of the raised rod 203 is rotatably connected with a fan cylinder 204, the inner wall of the fan cylinder 204 is provided with a threaded groove, the protrusion on the outer surface of the raised rod 203 is slidably connected in the threaded groove, the outer surface of the fan cylinder 204 is rotatably connected with a cross, the cross is fixedly connected to the inside of the spring cylinder 202, the outer surface of the fan cylinder 204 is provided with a right-angle groove 205, the inside of the right-angle groove 205 is slidably connected with an extrusion plate 206, the outer surface of the extrusion plate 206 is slidably connected to the inside of the fixed cylinder 201, the inner wall of the fixed cylinder 201 is fixedly connected with a conical cylinder, and the outer surface of the fixed cylinder 201 is provided with a plurality of square grooves.

[0042] The expansion mechanism 3 includes a fixed ring 301 fixedly connected to the outer surface of the fixed cylinder 201, the outer surface of the fixed ring 301 is rotatably connected to a plurality of hollow bars 302, the inside of the hollow bars 302 is rotatably connected to an L plate 303, the end of the L plate 303 away from the fixed cylinder 201 is rotatably connected to an arc-shaped rubber plate, and the side of the L plate 303 close to the spring cylinder 202 is rotatably connected to a movable plate 304. First, place this device at the bottom of the processing device to be processed, then adjust the distance between the two pneumatic frames 101, and then place the workpiece to be processed between the two inner rings 103.

[0043] The movable plate 304 is rotatably connected to the outer surface of the spring cylinder 202 on one side close to the spring cylinder 202, and the outer surface of the hollow bar 302 is rotatably connected to the telescopic rod 305, the L plate 303 is connected to the fixed cylinder 201, and the L plate 303 is connected to the arc-shaped rubber plate. When the L plate 303 moves and pushes the hollow bar 302 to rotate through the L plate 303, the rotation of the hollow bar 302 will drive the telescopic rod 305 to move backward. When moving backward, the telescopic rod 305 will slide in the thread groove inside the internal threaded gear cylinder 402 through the convex rod on its surface and drive the internal threaded gear cylinder 402 to rotate through sliding.

[0044] The outer surface of the telescopic rod 305 is provided with a rotating mechanism 4, which includes a fixed frame 401 slidably connected to the outer surface of the plurality of telescopic rods 305, the outer surface of the internally threaded gear cylinder 402 is rotatably connected to the internally threaded gear cylinder 402, the outer surface of the telescopic rod 305 is fixedly connected to a convex rod, the convex rod is slidably connected to the groove inside the internally threaded gear cylinder 402, the outer surfaces of the plurality of internally threaded gear cylinders 402 are meshedly connected to a gear ring 403, the gear ring 403 is rotatably connected to the outer surface of the fixed frame 401, and the gear ring 403 is rotatably connected to the outer surface of the fixed frame 401. The outer surface of the ring 403 is slidably connected to a plurality of internal thread blocks 404, wherein one end of an internal threaded gear cylinder 402 away from the fixed cylinder 201 is fixedly connected to a friction rod, and the internal threaded gear cylinder 402 will drive the gear ring 403 to rotate synchronously when rotating, and the gear ring 403 will drive the internal thread block 404 to rotate by sliding its surface inside the internal thread block 404 when rotating, and when the internal thread block 404 rotates, it will drive the intermediate frame 502 to rotate through the L bar 501 and rotate to the surface of the workpiece.

[0045] An auxiliary mechanism 5 is provided on the outer surface of the gear ring 403, and the auxiliary mechanism 5 includes two L-bars 501 rotatably connected to the side wall of the internal thread block 404, an intermediate frame 502 is rotatably connected between the two L-bars 501, a hollow plate 503 is fixedly connected to the top of the intermediate frame 502, two rotating plates 504 are rotatably connected inside the hollow plate 503, an arc plate 505 is rotatably connected between the two rotating plates 504, an extrusion block 506 is fixedly connected to the top of the arc plate 505, and two semicircular blocks are rotatably connected to the side wall of the extrusion block 506. When the intermediate frame 502 rotates to the surface of the workpiece, the workpiece will squeeze the rotating plate 504. After the rotating plate 504 is squeezed, its bottom will squeeze the arc plate 505 to cause it to bulge upward in the middle. After the arc plate 505 is deformed, it will push the extrusion block 506 so that the semicircular blocks on the extrusion block 506 clamp the workpiece. Since there are multiple hollow plates 503 and they are evenly distributed on the surface of the workpiece.

[0046] The hollow frame 102 is provided with a contraction mechanism 6 inside, which includes a rotating ring 601 rotatably connected to the inside of the inner ring 103, an arc groove is provided on the outer surface of the rotating ring 601, a plurality of rotating blocks 604 are rotatably connected to the inner wall of the rotating ring 601, a sliding rod 602 is slidably connected to the inside of the arc groove, the top of the sliding rod 602 is slidably connected to the rectangular groove on the inner wall of the inner ring 103, an end of the sliding rod 602 away from the inner ring 103 is rotatably connected to an arc plate 2 603, the top of the arc plate 2 603 is rotatably connected to a spring shaft, and the spring shaft is away from the arc plate 2 One end of 603 is slidably connected in the rectangular groove, and the side wall of the rotating ring 601 contacts the outer surface of the friction rod. When the sliding of the telescopic rod 305 drives the internal threaded gear cylinder 402 to rotate, the rotation of one of the internal threaded gear cylinders 402 will drive the friction rod to rotate. When the friction rod rotates, it will drive the rotating ring 601 to rotate. When the rotating ring 601 rotates, it will drive the sliding rod 602 to be squeezed through the arc groove, so that the sliding rod 602 slides in the rectangular groove on the inner wall of the inner ring 103. When the sliding rod 602 slides, it will drive the arc plate 2 603 to move forward.

[0047] A winding mechanism 7 is provided on the side wall of the arc plate 603, and the winding mechanism 7 includes a giant wheel shaft 701 rotatably connected to the side wall of the sliding rod 602, the outer surface of the giant wheel shaft 701 is rotatably connected to the outer frame 702, the inner part of the outer frame 702 is slidably connected to the spring plate 703, and an elastic belt 704 is slidably connected between the two giant wheel shafts 701. At the same time, when the rotating ring 601 rotates, the rotation of the rotating ring 601 will move the outer frame 702 through the rotating block 604, so that the outer frame 702 and the spring plate 703 drive the giant wheel shaft 701 to rotate, and the giant wheel shaft 701 will reel up the elastic belt 704 when rotating, and the elastic belt 704 will become straight and tight during reeling, and be wrapped around the surface of the workpiece. This tight state helps to further fix the workpiece and reduce its shaking during processing.

[0048] The cleaning mechanism 8 is arranged inside the main body 1, and the cleaning mechanism 8 includes a ball chain 801 rotatably connected to the side walls of the plurality of arc-shaped plates 603, a plurality of air outlet holes are provided on the outer surface of the ball chain 801, a plurality of connecting shafts 802 are fixedly connected to the outer surface of the ball chain 801, a side of the connecting shaft 802 close to the elastic band 704 is fixedly connected to the side wall of the elastic band 704, a plurality of elastic membranes 803 are fixedly connected to the inside of the ball chain 801, a plurality of tapered holes are provided inside the ball chain 801, and the ball chain 801 is straightened and tightened. The elastic belt 704 will pull the front end of the arc plate 2 603 through the connecting shaft 802, so that multiple arc plates 2 603 move relative to each other and form a conical tube to drive the spherical chain 801 to cover the surface of the workpiece. Then, when the workpiece vibrates during processing, the vibration of the workpiece will cause the multiple elastic membranes 803 inside the spherical chain 801 to resonate with the external vibration. At this time, the resonance of the elastic membrane 803 will swing back and forth inside the spherical chain 801. When the elastic membrane 803 swings inside the spherical chain 801 through resonance.

[0049] A method for using a fast positioning and fixing device for a CNC boring and milling machine, the method comprising the following steps:

[0050] S1: First, place the device at the bottom of the processing device to be processed, then adjust the distance between the two pneumatic racks 101, and then place the workpiece to be processed between the two inner rings 103;

[0051] S2: After that, the distance between the two main bodies 1 is adjusted, and then the pneumatic frame 101 is connected to the external air pump, and then the external air pump is started to fix the pneumatic frame 101 tightly on the main body 1, thereby completing the fixation of the workpiece.

[0052] When in use, first place this device at the bottom of the processing device that needs to be processed, then adjust the distance between the two pneumatic frames 101, then place the workpiece to be processed between the two inner rings 103, then adjust the distance between the two main bodies 1, then connect the pneumatic frame 101 to the external air pump, then start the external air pump to fix the pneumatic frame 101 tightly on the main body 1, and complete the fixation of the workpiece.

[0053] When the workpiece is placed in the inner ring 103 and the distance between the two pneumatic frames 101 is moved, the workpiece will squeeze the spring cylinder 202. After being squeezed, the spring cylinder 202 will squeeze the push L plate 303 through the movable plate 304. After being squeezed, the L plate 303 will drive the hollow bar 302 to rotate on the surface of the fixed ring 301. Then, when the movable plate 304 squeezes the L plate 303, the L plate 303 will rotate inside the hollow bar 302 and drive the arc-shaped rubber plate on the top to relatively squeeze the surface of the workpiece. At the same time, when the spring cylinder 202 is squeezed and moved by the workpiece, the movement of the spring cylinder 202 will drive the raised rod 203 to slide inside the fan cylinder 204. When the raised rod 203 slides, it will pass through the raised belt on the surface. The dynamic fan barrel 204 rotates inside the spring barrel 202. When the fan barrel 204 rotates, it absorbs external gas through the square groove on the outer surface of the fixed barrel 201 and enters the fixed barrel 201 through the tapered barrel. At the same time, when the fan barrel 204 rotates, the rotation of the fan barrel 204 will drive the extrusion plate 206 to move in the direction of the raised rod 203 through the right-angle groove and squeeze the gas. After being squeezed, the gas will enter the arc-shaped rubber plate through the L plate 303 and expand and fit the surface of the workpiece, guiding the workpiece to the center position, realizing fast and accurate preliminary positioning, which helps to reduce the position deviation of the workpiece in the hollow barrel. At the same time, relying on the relative extrusion of the arc-shaped rubber plate on the workpiece can reduce the shaking and displacement of the workpiece during the processing, thereby improving the processing accuracy.

[0054] When the L plate 303 moves and pushes the hollow bar 302 to rotate through the L plate 303, the rotation of the hollow bar 302 will drive the telescopic rod 305 to move backward. When the telescopic rod 305 moves backward, the convex rod on its surface will slide in the thread groove inside the internal threaded gear cylinder 402 and drive the internal threaded gear cylinder 402 to rotate through sliding. When the internal threaded gear cylinder 402 rotates, it will drive the gear ring 403 to rotate synchronously. When the gear ring 403 rotates, it will drive the internal thread block 404 to rotate through its surface sliding inside the internal thread block 404. When the internal thread block 404 rotates, it will drive the intermediate frame 502 to rotate through the L bar 501 and rotate to the surface of the workpiece. When the intermediate frame 502 rotates to the surface of the workpiece, the workpiece will squeeze the rotating plate 504. After the rotating plate 504 is squeezed, its bottom will squeeze The arc plate 505 causes the middle part to bulge upward due to deformation. After the arc plate 505 is deformed, it pushes the extrusion block 506 so that the semicircular block on the extrusion block 506 clamps the workpiece. Since there are multiple hollow plates 503 and they are evenly distributed on the surface of the workpiece, when the extrusion blocks 506 in the middle frame 502 extrude the workpiece, the multiple extrusion blocks 506 will wrap and clamp the workpiece on the surface of the workpiece. At the same time, when the extrusion blocks 506 clamp the workpiece, they can fit well on the outer surface of the workpiece. This wrapping and fixing method can improve the stability of the workpiece during the processing and prevent the workpiece from shifting or deforming during the processing. Compared with the traditional bolt fixing method, this device can quickly position and fix the workpiece by rotating the internal thread block 404, shortening the time for installing and adjusting the workpiece, thereby improving the processing efficiency.

[0055] When the sliding of the telescopic rod 305 drives the internal threaded gear cylinder 402 to rotate, the rotation of one of the internal threaded gear cylinders 402 will drive the friction rod to rotate, and the friction rod will drive the rotating ring 601 to rotate when rotating. When the rotating ring 601 rotates, it will drive the sliding rod 602 to be squeezed through the arc groove, so that the sliding rod 602 slides in the rectangular groove on the inner wall of the inner ring 103. When the sliding rod 602 slides, it will drive the arc plate 2 603 to move forward. At the same time, when the rotating ring 601 rotates, the rotating ring The rotation of 601 will move the outer frame 702 through the rotating block 604, so that the outer frame 702 and the spring plate 703 drive the giant wheel shaft 701 to rotate. When the giant wheel shaft 701 rotates, it will reel up the elastic belt 704. The elastic belt 704 will become straight and tight when it is reeled up, and will be wrapped around the surface of the workpiece. This tight state helps to further fix the workpiece and reduce its shaking during processing. At the same time, the tight elastic belt 704 can also absorb and disperse part of the vibration energy, thereby reducing the vibration of the workpiece during processing.

[0056] When the elastic band 704 is wrapped around the surface of the workpiece, the stretched and tightened elastic band 704 will pull the front end of the arc plate 2 603 through the connecting shaft 802, so that the multiple arc plates 2 603 move relatively and synthesize into a conical tube to drive the ball chain 801 to cover the surface of the workpiece. Later, when the workpiece vibrates during processing, the vibration of the workpiece will cause the multiple elastic membranes 803 inside the ball chain 801 to resonate with the external vibration. At this time, the resonance of the elastic membrane 803 will swing back and forth inside the ball chain 801. When the elastic membrane 803 shakes inside the spherical chain 801 through resonance, the shaking of the elastic membrane 803 will absorb the external gas into the spherical chain 801 through the conical hole and blow the absorbed gas of the spherical chain 801 through the blowing hole to clean the waste chips on the surface of the workpiece at the front end of the arc plate 2 603, thereby reducing the entry of waste chips and impurities into the surface of the auxiliary mechanism 5, resulting in increased friction and shaking between the internal components and the surface, affecting the clamping and fixing accuracy of the device to the workpiece and normal operation.

[0057] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A fast positioning and fixing device for a CNC boring and milling machine, comprising a main body (1), wherein the top of the main body (1) is slidably connected to two pneumatic frames (101), the top of the pneumatic frames (101) is fixedly connected to a hollow frame (102), the interior of the hollow frame (102) is fixedly connected to an inner ring (103), and the inner wall of the inner ring (103) is provided with a plurality of rectangular grooves, wherein: Also includes; The pushing mechanism (2) comprises a fixed cylinder (201) fixedly connected to the inner wall of a side of the hollow frame (102) away from the inner ring (103); the outer surface of the fixed cylinder (201) is slidably connected to a spring cylinder (202); the inner wall of the side of the spring cylinder (202) close to the inner ring (103) is fixedly connected to a protruding rod (203); the outer surface of the protruding rod (203) is rotatably connected to a fan cylinder (204); the inner wall of the fan cylinder (204) is provided with a threaded groove; the protruding rod (203) on the outer surface of the protruding rod (203) is rotatably connected to the inner wall of the fan cylinder (204); ... The fan tube (204) is slidably connected in the thread groove, and the outer surface of the fan tube (204) is rotatably connected with a cross, and the cross is fixedly connected to the inside of the spring tube (202). The outer surface of the fan tube (204) is provided with a right-angle groove (205), and the inside of the right-angle groove (205) is slidably connected with an extrusion plate (206), and the outer surface of the extrusion plate (206) is slidably connected to the inside of the fixed tube (201). The inner wall of the fixed tube (201) is fixedly connected with a conical tube, and the outer surface of the fixed tube (201) is provided with a plurality of square grooves. An expansion mechanism (3), the expansion mechanism (3) comprising a fixing ring (301) fixedly connected to the outer surface of a fixing tube (201), the outer surface of the fixing ring (301) being rotatably connected to a plurality of hollow bars (302), the interior of the hollow bars (302) being rotatably connected to an L-plate (303), one end of the L-plate (303) away from the fixing tube (201) being rotatably connected to an arc-shaped rubber plate, and the side of the L-plate (303) close to the spring tube (202) being rotatably connected to a movable plate (304).

2. The rapid positioning and fixing device for a CNC boring and milling machine according to claim 1, characterized in that: The movable plate (304) is rotatably connected to the outer surface of the spring tube (202) at one side close to the spring tube (202), the outer surface of the hollow bar (302) is rotatably connected to a telescopic rod (305), the L plate (303) is connected to the fixed tube (201), and the L plate (303) is connected to the arc-shaped rubber plate.

3. The rapid positioning and fixing device for a CNC boring and milling machine according to claim 2, characterized in that: The outer surface of the telescopic rod (305) is provided with a rotating mechanism (4), and the rotating mechanism (4) includes a fixed frame (401) slidably connected to the outer surfaces of the plurality of telescopic rods (305); the outer surface of the internally threaded gear cylinder (402) is rotatably connected to the internally threaded gear cylinder (402); the outer surface of the telescopic rod (305) is fixedly connected to a convex rod, and the convex rod is slidably connected to a groove inside the internally threaded gear cylinder (402); the outer surfaces of the plurality of internally threaded gear cylinders (402) are meshingly connected to a gear ring (403), and the gear ring (403) is rotatably connected to the outer surface of the fixed frame (401); the outer surface of the gear ring (403) is slidably connected to a plurality of internally threaded blocks (404); and one end of one of the internally threaded gear cylinders (402) away from the fixed cylinder (201) is fixedly connected to a friction rod.

4. The rapid positioning and fixing device for a CNC boring and milling machine according to claim 3, characterized in that: An auxiliary mechanism (5) is provided on the outer surface of the gear ring (403), and the auxiliary mechanism (5) comprises two L-bars (501) rotatably connected to the side wall of the internal thread block (404), an intermediate frame (502) is rotatably connected between the two L-bars (501), a hollow plate (503) is fixedly connected to the top of the intermediate frame (502), two rotating plates (504) are rotatably connected inside the hollow plate (503), an arc plate (505) is rotatably connected between the two rotating plates (504), an extrusion block (506) is fixedly connected to the top of the arc plate (505), and two semicircular blocks are rotatably connected to the side wall of the extrusion block (506).

5. The rapid positioning and fixing device for a CNC boring and milling machine according to claim 4, characterized in that: A contraction mechanism (6) is arranged inside the hollow frame (102), and the contraction mechanism (6) comprises a rotating ring (601) rotatably connected inside the inner ring (103); an arc groove is provided on the outer surface of the rotating ring (601); a plurality of rotating blocks (604) are rotatably connected to the inner wall of the rotating ring (601); a sliding rod (602) is slidably connected inside the arc groove; the top of the sliding rod (602) is slidably connected in the rectangular groove on the inner wall of the inner ring (103); an end of the sliding rod (602) away from the inner ring (103) is rotatably connected to an arc plate 2 (603); a top of the arc plate 2 (603) is rotatably connected to a spring shaft; an end of the spring shaft away from the arc plate 2 (603) is slidably connected in the rectangular groove; and a side wall of the rotating ring (601) contacts the outer surface of the friction rod.

6. The rapid positioning and fixing device for a CNC boring and milling machine according to claim 5, characterized in that: The side wall of the second arc-shaped plate (603) is provided with a winding mechanism (7), and the winding mechanism (7) comprises a giant wheel shaft (701) rotatably connected to the side wall of the sliding rod (602), the outer surface of the giant wheel shaft (701) is rotatably connected to an outer frame (702), the interior of the outer frame (702) is slidably connected to a spring plate (703), and an elastic belt (704) is slidably connected between the two giant wheel shafts (701).

7. The rapid positioning and fixing device for a CNC boring and milling machine according to claim 6, characterized in that: A cleaning mechanism (8) is arranged inside the main body (1), and the cleaning mechanism (8) comprises a spherical chain (801) rotatably connected to the side walls of a plurality of the arc-shaped plates (603), a plurality of air outlet holes are provided on the outer surface of the spherical chain (801), a plurality of connecting shafts (802) are fixedly connected to the outer surface of the spherical chain (801), a side of the connecting shaft (802) close to the elastic band (704) is fixedly connected to the side wall of the elastic band (704), a plurality of elastic membranes (803) are fixedly connected inside the spherical chain (801), and a plurality of conical holes are provided inside the spherical chain (801).

8. A method for using a fast positioning and fixing device for a CNC boring and milling machine, characterized in that: Using the CNC boring and milling machine rapid positioning and fixing device as claimed in claim 7, the method comprises the following steps: S1: firstly, the device is placed at the bottom of the processing device to be processed, then the distance between the two pneumatic frames (101) is adjusted, and then the workpiece to be processed is placed between the two inner rings (103); S2: After that, the distance between the two main bodies (1) is adjusted, and then the pneumatic frame (101) is connected to an external air pump, and then the external air pump is started so that the pneumatic frame (101) is tightly fixed on the main body (1), thereby completing the fixation of the workpiece.

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