CN110976933B - Machine tool for mechanical finish machining - Google Patents
Machine tool for mechanical finish machining Download PDFInfo
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- CN110976933B CN110976933B CN201911255838.4A CN201911255838A CN110976933B CN 110976933 B CN110976933 B CN 110976933B CN 201911255838 A CN201911255838 A CN 201911255838A CN 110976933 B CN110976933 B CN 110976933B
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- 238000003754 machining Methods 0.000 title claims abstract description 28
- 238000001125 extrusion Methods 0.000 claims description 27
- 239000007787 solid Substances 0.000 claims description 19
- 239000011241 protective layer Substances 0.000 claims description 10
- 238000000034 method Methods 0.000 claims description 8
- 238000010002 mechanical finishing Methods 0.000 claims description 7
- 230000005389 magnetism Effects 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 10
- 208000010543 22q11.2 deletion syndrome Diseases 0.000 description 5
- 230000009471 action Effects 0.000 description 5
- 230000001965 increasing effect Effects 0.000 description 5
- 238000005299 abrasion Methods 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 238000005520 cutting process Methods 0.000 description 3
- 238000007373 indentation Methods 0.000 description 3
- 238000005242 forging Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B31/00—Chucks; Expansion mandrels; Adaptations thereof for remote control
- B23B31/02—Chucks
- B23B31/10—Chucks characterised by the retaining or gripping devices or their immediate operating means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B31/00—Chucks; Expansion mandrels; Adaptations thereof for remote control
- B23B31/02—Chucks
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B31/00—Chucks; Expansion mandrels; Adaptations thereof for remote control
- B23B31/02—Chucks
- B23B31/10—Chucks characterised by the retaining or gripping devices or their immediate operating means
- B23B31/102—Jaws, accessories or adjustment means
Abstract
The invention belongs to the technical field of machine tool machining, and particularly relates to a machine tool for mechanical finish machining, which comprises a rack, a tool rest, a tailstock and a three-jaw chuck, wherein a locking module is arranged in the three-jaw chuck, the locking module comprises a chassis, a movable ring and a fixed ring, a positioning block is arranged on the side wall of a clamping groove, the other end of the movable ring is connected with an arc-shaped locking rod, and a locking groove matched with the locking rod is formed in the end surface of the fixed ring on one side of the locking rod; according to the invention, the locking module is arranged in the three-jaw chuck, so that the jaws indirectly clamp and fix the workpiece through the movable ring and the fixed ring in the locking module, the fixing effect of the three-jaw chuck is improved, and the processing precision of the workpiece can be effectively improved; in addition, the side surfaces of the fixing ring and the three-jaw chuck are respectively provided with the limiting block and the first limiting groove, so that the fixing precision of the fixing ring and the movable ring to the workpiece is enhanced, and the processing quality of the machine tool to the workpiece is improved.
Description
Technical Field
The invention belongs to the technical field of machine tool machining, and particularly relates to a machine tool for mechanical finish machining.
Background
Machine tools are machines for manufacturing machines, also called machine tools or machine tools, and are generally classified into metal cutting machines, forging machines, woodworking machines, and the like. The methods for machining machine parts in modern machine manufacturing are numerous: in addition to cutting, casting, forging, welding, pressing, extruding, etc., however, in general, a part requiring high precision and fine surface roughness is finished by cutting on a machine tool.
When a machine tool is used for processing a workpiece, one end of the workpiece is often clamped and fixed, for example, a three-jaw chuck is used for fixing one end of the workpiece, however, when the existing three-jaw chuck is used for fixing a workpiece, a wrench is often needed to control the jaws of the three-jaw chuck to clamp and fix the workpiece inside the three-jaw chuck, when the clamping jaw clamps the workpiece too tightly, the clamping jaw is easy to cause indentation damage to the outer surface of the machined workpiece, when the clamping jaws clamp the workpiece too loosely, the workpiece is easy to fall off from the interior of the three-jaw chuck during the processing, therefore, the machining precision and the machining quality of the workpiece are influenced, the jaw is easy to abrade the surface of the workpiece when the jaw is directly clamped with the workpiece, the abraded jaw can cause inconvenience in replacement and increase of cost, and form and position tolerance of a machined part can be influenced, so that the machining precision and the machining quality of a machine tool are influenced.
In view of the above, the invention provides a machine tool for mechanical finishing, which enables the jaws in the three-jaw chuck to indirectly clamp and fix a workpiece through the movable ring and the fixed ring, so that the fixing effect of the three-jaw chuck is improved, and the processing precision and the processing quality of the workpiece can be effectively improved.
Disclosure of Invention
In order to make up for the defects of the prior art, the invention provides a machine tool for mechanical finish machining, so that clamping jaws in a three-jaw chuck indirectly clamp and fix a workpiece through a movable ring and a fixed ring, the fixing effect of the three-jaw chuck is improved, and the machining precision and the machining quality of the workpiece can be effectively improved.
The technical scheme adopted by the invention for solving the technical problems is as follows: a machine tool for mechanical finish machining comprises a frame, a tool rest, a tailstock and a three-jaw chuck, wherein the tool rest is positioned in the middle of the frame, the tailstock is positioned at one end of the frame, and the three-jaw chuck is positioned at the other end of the frame; clamping grooves which are uniformly distributed in an annular mode are formed in the three-jaw chuck, clamping jaws which can slide synchronously in the clamping grooves are arranged in the clamping grooves, extrusion blocks are arranged at the end portions of the clamping jaws, and one ends of the extrusion blocks are arranged to be inclined planes; a positioning block is arranged on the side wall of the clamping groove and can be used for positioning the sliding distance of the bottom end of the clamping jaw; the locking module is arranged in the three-jaw chuck and comprises a chassis, a movable ring and a fixed ring, the chassis is slidably connected to the inner end of the three-jaw chuck, the inner diameter and the outer diameter of the movable ring are the same as those of the fixed ring, elastic protective layers are arranged on the inner ring side faces of the movable ring and the fixed ring, the inner end face of the movable ring is slidably connected to the chassis, the movable ring and the fixed ring are symmetrically distributed at two ends of the extrusion block in a group, the movable ring is arranged on one side close to the inclined surface of the extrusion block, one end of the movable ring close to the inclined surface of the extrusion block is arranged in an inclined shape matched with the inclined surface of the extrusion block, the other end of the movable ring is connected with an arc-shaped locking rod, and a locking groove matched with the locking rod is formed in the end face of the fixed ring on one side of the locking rod; the machine frame is provided with a controller, and the controller is used for controlling the automatic operation of the machine tool; when the machine tool works, one end of the workpiece is often clamped and fixed when the machine tool is used for processing the workpiece, for example, one end of the workpiece is fixed by using a three-jaw chuck, however, when the existing three-jaw chuck is used for fixing a workpiece, a wrench is often needed to control the jaws of the three-jaw chuck to clamp and fix the workpiece inside the three-jaw chuck, when the clamping jaw clamps the workpiece too tightly, the clamping jaw is easy to cause indentation damage to the outer surface of the machined workpiece, when the clamping jaws clamp the workpiece too loosely, the workpiece is easy to fall off from the interior of the three-jaw chuck during the processing, therefore, the machining precision and the machining quality of the workpiece are influenced, the surface of the clamping jaw is easily abraded when the clamping jaw is directly clamped with the workpiece, the abraded clamping jaw causes inconvenience in replacement and increase in cost, and the form and position tolerance of a machined part is influenced, so that the machining precision and the machining quality of a machine tool are influenced; when the machine tool works, one end of a workpiece is placed in the three-jaw chuck, then the jaws in the three-jaw chuck are controlled by the wrench to synchronously slide towards the center of the three-jaw chuck, at the moment, the inclined surfaces of the extrusion blocks at the end parts of the jaws gradually extrude the inclined end surfaces of the movable rings at one side, so that the movable rings drive the locking rods at the other end to slide towards the inside of the locking grooves under the action of the extrusion blocks, at the moment, the locking rods are gradually retracted into the inside of the locking grooves, so that the fixed chambers formed by the movable rings and the fixed rings are gradually reduced, the workpieces positioned in the fixed chambers are fixed and limited by the gradually reduced fixed chambers, and then the controller controls the machine tool to process the workpieces; the elastic protective layer arranged on the side faces of the inner rings of the movable ring and the fixed ring can effectively protect contacted workpieces, reduce abrasion and workpiece damage caused by direct contact of the workpieces with the surfaces of the movable ring and the fixed ring, and when the protective layer needs to be replaced, only the chassis needs to drive the fixed ring and the movable ring to slide out of the three-jaw chuck for replacement, so that the damage of clamping jaws is reduced conveniently and quickly; the positioning block is arranged on the side wall of the clamping groove, so that the sliding distance of the bottom end of the clamping jaw can be positioned by the positioning block, the clamping force of the clamping jaw on the workpiece is effectively controlled, and the influence on the machining of the workpiece caused by over-tight or over-loose stress applied to the workpiece by the clamping jaw is reduced; the invention has the beneficial effects that: through the locking module arranged in the three-jaw chuck, the clamping jaws clamp and fix the workpiece indirectly through the movable ring and the fixed ring in the locking module, so that the fixing effect of the three-jaw chuck is improved, and the processing precision and the processing quality of the workpiece can be effectively improved.
Preferably, a limiting block is arranged on the side surface of the outer ring of one of the fixing rings, a first limiting groove matched with the limiting block is arranged on the side surface of the inner ring of the three-jaw chuck, and the limiting block can be inserted into the first limiting groove and clamped and locked with the first limiting groove; the during operation, when the chassis drives the loose ring and solid fixed ring when the inside slip of three-jaw chuck, need rotate the calibration to the chassis and make the extrusion piece can accurately extrude the loose ring, not only waste time and energy, still can make the loose ring and solid fixed ring's positional deviation cause the influence to the fixed precision of work piece, stopper and spacing groove through setting up this moment, make the chassis slide in to the inside time of three-jaw chuck, the spacing groove is injectd the stopper department solid fixed ring relative position on the radial direction, it rotates at the three-jaw chuck in-process with the loose ring to reduce solid fixed ring, thereby effectively strengthened solid fixed ring and the fixed precision of loose ring to the work piece, improve the processingquality of lathe to the work piece.
Preferably, a second limiting groove is formed in the side face of the fixing ring at the bottom end of the limiting block, a spring is connected between the limiting block and the inner end of the second limiting groove, a third limiting groove is formed in the inner end of the first limiting groove in the radial direction of the fixing ring, a working cavity is formed in the three-jaw chuck at the position of the third limiting groove, and the inner end of the third limiting groove is communicated with the side face of the inner end of the working cavity; when the machine tool is in work, the fixing ring drives the limiting block to slide in the first limiting groove, at the moment, the limiting block is extruded by the side wall of the first limiting groove to be located in the second limiting groove, when the limiting block moves to the opening part of the third limiting groove at the innermost end of the first limiting groove, the limiting block pushes the limiting block to slide between the second limiting groove and the third limiting groove under the action of the spring at the moment, so that the limiting block located between the limiting block and the first limiting groove can fix the axial sliding of the fixing ring, the stability of the fixing ring in work is enhanced, and when the fixing ring needs to slide out from the inside of the three-jaw chuck, the limiting block is extruded through the opening of the third limiting groove communicated with the working chamber at the moment, the fixing ring is pulled to slide out from the inside of the three-jaw chuck when the fixing ring is located in the first limiting groove, and the convenience and the practicability of the machine tool in use are improved.
Preferably, a sliding groove is formed in the side face of the inner end of the working cavity, a sliding plate is connected in the sliding groove in a sliding mode, and magnets are arranged at the end portions of the sliding plate and the limiting block respectively and have the same magnetism; during operation, when needs follow the inside roll-off of three-jaw chuck with solid fixed ring, through sliding slide, make the slide drive the magnet motion of bottom to the intercommunication department of No. three spacing grooves and working chamber side in the inside gliding of spout, the magnet of slide and stopper tip repels each other this moment, make magnet on the stopper drive the stopper under the effect of slide magnet and move to the inside of a spacing groove, thereby make things convenient for the staff to follow the inside roll-off of three-jaw chuck with solid fixed ring, the convenience when further having increased the lathe and using.
Preferably, the top end of the sliding plate is provided with a sucker, the sucker can be adsorbed on the top surface of the working cavity, and one side of the top surface of the working cavity adsorbed by the sucker is provided with an air leakage hole; when the sliding plate works, the sliding plate is pushed upwards to drive the sucking disc at the top end to extrude and adsorb with the side wall of the working cavity when the sliding plate works, and the sucking disc sucked with the side wall of the working cavity fixes the sliding plate, so that the movement and limiting failure of the limiting block driven by the sliding plate when the sliding plate moves downwards are reduced, and the stability of the machine tool during working is improved; when the slide needs to be used, the slide is upwards extruded once more for the slide exerts the effort and drives the sucking disc outward flange expansion to disappointing hole one side to the sucking disc at top, the inside negative pressure state of sucking disc this moment disappear and with the adsorption failure of working chamber lateral wall, thereby make things convenient for the use of slide, increased the convenience when the lathe used.
Preferably, the positioning block is internally connected with a positioning bolt in a threaded manner, and the top surface of the positioning bolt can position the sliding distance of the bottom end of the clamping jaw; the during operation, through setting up positioning bolt in the locating piece is inside, and positioning bolt's top surface can fix a position the sliding distance of jack catch bottom, it is fixed to press from both sides the work piece of equidimension not, highly adjusting its top surface through twisting positioning bolt, make the positioning bolt top surface can carry out assorted location with it to the work piece of difference, thereby make the jack catch carry out reasonable control to the dynamics of pressing from both sides of work piece, reduce the jack catch and to the influence that the stress that the work piece was applyed tension or too loose and led to the fact its processing, further reinforcing the processingquality of lathe to the work piece.
The invention has the following beneficial effects:
1. according to the invention, the locking module is arranged in the three-jaw chuck, so that the clamping jaws indirectly clamp and fix the workpiece through the movable ring and the fixed ring in the locking module, the fixing effect of the three-jaw chuck is improved, and the processing precision and the processing quality of the workpiece can be effectively improved.
2. According to the invention, the limiting block is arranged on the side surface of the outer ring of the fixing ring, and the first limiting groove matched with the limiting block is arranged on the side surface of the inner ring of the three-jaw chuck, so that the rotation of the fixing ring and the movable ring in the process of sliding into the three-jaw chuck is reduced, the fixing precision of the fixing ring and the movable ring to the workpiece is effectively enhanced, and the processing quality of the machine tool to the workpiece is improved.
Drawings
The invention will be further explained with reference to the drawings.
FIG. 1 is a schematic perspective view of the present invention;
FIG. 2 is a perspective view of a three-jaw chuck according to the present invention;
FIG. 3 is an enlarged view at A in FIG. 2;
FIG. 4 is a schematic view of the construction of the three-jaw chuck of the present invention;
FIG. 5 is an enlarged view at B in FIG. 4;
in the figure: the device comprises a rack 1, a tool rest 11, a tailstock 12, a three-jaw chuck 2, a clamping groove 21, a clamping jaw 22, an extrusion block 23, a first limiting groove 24, a third limiting groove 25, a positioning block 3, a chassis 4, a movable ring 5, a locking rod 51, a fixing ring 6, a locking groove 61, a limiting block 62, a second limiting groove 63, a protective layer 64, a working cavity 7, a sliding groove 71, a sliding plate 72, a magnet 73, a sucking disc 74, an air leakage hole 75 and a positioning bolt 8.
Detailed Description
In order to make the technical means, the creation features, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the following embodiments.
As shown in fig. 1 to 5, the machine tool for mechanical finishing according to the present invention includes a frame 1, a tool post 11, a tailstock 12, and a three-jaw chuck 2, wherein the tool post 11 is located in the middle of the frame 1, the tailstock 12 is located at one end of the frame 1, and the three-jaw chuck 2 is located at the other end of the frame 1; clamping grooves 21 which are uniformly distributed in an annular mode are formed in the three-jaw chuck 2, clamping jaws 22 which can slide synchronously in the clamping grooves 21 are arranged in the clamping grooves 21, extrusion blocks 23 are arranged at the end portions of the clamping jaws 22, and one ends of the extrusion blocks 23 are arranged to be inclined planes; a positioning block 3 is arranged on the side wall of the clamping groove 21, and the positioning block 3 can position the sliding distance of the bottom end of the clamping jaw 22; a locking module is arranged in the three-jaw chuck 2 and comprises a chassis 4, a movable ring 5 and a fixed ring 6, the chassis 4 is connected with the inner end of the three-jaw chuck 2 in a sliding way, the inner diameter and the outer diameter of the movable ring 5 are the same as those of the fixed ring 6, the side surfaces of the inner rings of the movable ring 5 and the fixed ring 6 are both provided with an elastic protective layer 64, the inner end surface of the movable ring 5 is connected on the chassis 4 in a sliding way, the movable rings 5 and the fixed rings 6 are symmetrically distributed at two ends of the extrusion block 23 in a pairwise manner, the movable rings 5 are all arranged at one side close to the inclined plane of the extrusion block 23, one end of each movable ring 5 close to the inclined plane of the extrusion block 23 is arranged to be inclined matched with the inclined plane of the extrusion block, the other end of the movable ring 5 is connected with an arc-shaped locking rod 51, and the end surface of the fixed ring 6 at one side of the locking rod 51 is provided with a locking groove 61 matched with the locking rod 51; the machine frame 1 is provided with a controller, and the controller is used for controlling the automatic operation of the machine tool; when the three-jaw chuck 2 is used for fixing a workpiece, a wrench is often needed to control the jaws 22 of the three-jaw chuck 2 to clamp and fix the workpiece inside the three-jaw chuck 2, when the jaws 22 clamp the workpiece too tightly, the jaws 22 are prone to indentation damage on the outer surface of the machined workpiece, when the jaws 22 clamp the workpiece too loosely, the workpiece is prone to falling off from the inside of the three-jaw chuck 2 during machining, so that machining precision and machining quality of the workpiece are affected, and the jaws 22 are prone to abrasion on the surface when directly clamping the workpiece, and the abraded jaws 22 not only cause inconvenience in replacement and increase in cost, but also affect form and position tolerance of the machined part, thereby influencing the processing precision and the processing quality of the machine tool; when the machine tool works, one end of a workpiece is placed in the three-jaw chuck 2, then the jaws 22 in the three-jaw chuck 2 are controlled by a wrench to slide towards the center of the three-jaw chuck 2 synchronously, at the moment, the inclined surfaces of the extrusion blocks 23 at the end parts of the jaws 22 gradually extrude the inclined end surfaces of the movable rings 5 on one side, so that the movable rings 5 drive the locking rods 51 at the other end to slide towards the inside of the locking grooves 61 under the action of the extrusion blocks 23, at the moment, the locking rods 51 are gradually retracted into the locking grooves 61 to gradually reduce the fixed cavity formed by the movable rings 5 and the fixed rings 6, so that the gradually reduced fixed cavity fixes and limits the workpiece positioned in the inner part, and then the controller controls the machine tool to process the workpiece; the elastic protective layer 64 arranged on the inner ring side faces of the movable ring 5 and the fixed ring 6 can effectively protect contacted workpieces, reduce abrasion and workpiece damage caused by direct contact of the workpieces with the surfaces of the movable ring 5 and the fixed ring 6, and when the protective layer 64 needs to be replaced, only the chassis 4 needs to drive the fixed ring 6 and the movable ring 5 to slide out of the three-jaw chuck 2 for replacement, so that damage to the clamping jaws 22 is reduced conveniently and quickly; the side wall of the clamping groove 21 is provided with the positioning block 3, so that the positioning block 3 can position the sliding distance at the bottom end of the clamping jaw 22, the clamping force of the clamping jaw 22 on the workpiece is effectively controlled, and the influence on the machining of the workpiece caused by over-tight or over-loose stress applied to the workpiece by the clamping jaw 22 is reduced; the invention has the beneficial effects that: through setting up the locking module in that three-jaw chuck 2 is inside for jack catch 22 presss from both sides the work piece through the loose ring 5 in the locking module and presss from both sides fixedly with solid fixed ring 6 is indirect, has not only improved three-jaw chuck 2's fixed effect, can also effectual improvement work piece's machining precision and processingquality.
As an embodiment of the present invention, a limiting block 62 is disposed on an outer ring side surface of one of the fixing rings 6, a first limiting groove 24 matched with the limiting block 62 is disposed on an inner ring side surface of the three-jaw chuck 2, and the limiting block 62 can be inserted into the first limiting groove 24 and be locked with the first limiting groove; during operation, when chassis 4 drives loose ring 5 and solid fixed ring 6 when three-jaw chuck 2 is inside to slide, need rotate the calibration to chassis 4 and make extrusion piece 23 can accurately extrude loose ring 5, not only waste time and energy, still can make loose ring 5 and solid fixed ring 6's positional deviation cause the influence to the fixed precision of work piece, stopper 62 and the spacing groove through setting up this moment, when making chassis 4 slide into three-jaw chuck 2 inside, the spacing groove is injectd the stopper 62 department solid fixed ring 6 relative position on the radial direction, it rotates at the three-jaw chuck 2 in-process with loose ring 5 to reduce solid fixed ring 6, thereby effectively strengthened solid fixed ring 6 and the fixed precision of loose ring 5 to the work piece, improve the processingquality of lathe to the work piece.
As an embodiment of the invention, a second limiting groove 63 is arranged on the side surface of the fixing ring 6 at the bottom end of the limiting block 62, the inner ends of the limiting block 62 and the second limiting groove 63 are connected with a spring, a third limiting groove 25 is arranged at the inner end of the first limiting groove 24 along the radial direction of the fixing ring 6, a working cavity 7 is arranged on the three-jaw chuck 2 at the position of the third limiting groove 25, and the inner end of the third limiting groove 25 is communicated with the side surface of the inner end of the working cavity 7; when the fixing ring 6 drives the limiting block 62 to slide in the first limiting groove 24, at the moment, the side wall of the first limiting groove 24 extrudes the limiting block 62 to be positioned in the second limiting groove 63, when the limiting block 62 moves to the opening of the third limiting groove 25 at the innermost end of the first limiting groove 24, the limiting block 62 pushes the limiting block 62 to slide between the second limiting groove 63 and the third limiting groove 25 under the action of the spring, so that the limiting block 62 positioned between the two can fix the axial sliding of the fixing ring 6, thereby enhancing the stability of the fixing ring 6 during working, and when the fixing ring 6 needs to slide out from the inside of the three-jaw chuck 2, the limiting block 62 is extruded through the opening of the third limiting groove 25 communicated with the working cavity 7 at the moment, so that the fixing ring 6 is pulled to slide out from the inside of the three-jaw chuck 2 when the fixing ring 6 is positioned in the first limiting groove 24, thereby increasing the convenience and the practicability of the machine tool during use.
As an embodiment of the present invention, a sliding groove 71 is disposed on a side surface of an inner end of the working chamber 7, a sliding plate 72 is slidably connected in the sliding groove 71, the sliding plate 72 and an end of the limit block 62 are respectively provided with a magnet 73, and the magnets 73 have the same magnetism; during operation, when needs follow the inside roll-off of three-jaw chuck 2 with solid fixed ring 6, through slide plate 72, make slide plate 72 drive the magnet 73 of bottom and move to the intercommunication department of No. three spacing grooves 25 and working chamber 7 side when spout 71 is inside gliding, slide plate 72 repels each other with the magnet 73 of stopper 62 tip this moment, make magnet 73 on the stopper 62 drive stopper 62 and move to No. one inside the spacing groove 24 under the effect of slide plate 72 magnet 73, thereby make things convenient for the staff to follow the inside roll-off of three-jaw chuck 2 with solid fixed ring 6, the convenience when further having increased the lathe and using.
As an embodiment of the present invention, a suction cup 74 is disposed at the top end of the sliding plate 72, the suction cup 74 can be adsorbed on the top surface of the working cavity 7, and an air release hole 75 is disposed on one side of the top surface of the working cavity 7 adsorbed by the suction cup 74; when the sliding plate 72 works, the sliding plate 72 is pushed upwards to drive the sucking disc 74 at the top end to be extruded and adsorbed with the side wall of the working cavity 7, and the sucking disc 74 which is adsorbed with the side wall of the working cavity 7 fixes the sliding plate 72, so that the movement and limiting failure of the limiting block 62 driven by the sliding plate 72 when moving downwards are reduced, and the stability of the machine tool during working is improved; when slide 72 needs to use, upwards extrude slide 72 once more for slide 72 exerts the effort to the sucking disc 74 at top and drives sucking disc 74 outward flange expansion to run-flat hole 75 one side, the inside negative pressure state of sucking disc 74 this moment disappear and with the absorption inefficacy of working chamber 7 lateral wall, thereby make things convenient for slide 72's use, increased the convenience when the lathe used.
As an embodiment of the present invention, a positioning bolt 8 is connected to the inside of the positioning block 3 through a thread, and the top surface of the positioning bolt 8 can position the sliding distance of the bottom end of the clamping jaw 22; the during operation, through setting up positioning bolt 8 in locating piece 3 inside, and positioning bolt 8's top surface can fix a position the sliding distance of jack catch 22 bottom, it is fixed to press from both sides the work piece of equidimension not getting, highly adjusting its top surface through twisting positioning bolt 8, make positioning bolt 8 top surface can carry out assorted location with it to different work pieces, thereby make jack catch 22 carry out reasonable control to the dynamics of getting of the clamp of work piece, reduce jack catch 22 and to the influence that the stress that the work piece was applyed tension or too loose and led to the fact its processing, further reinforcing the processingquality of lathe to the work piece.
When the three-jaw chuck works, one end of a workpiece is placed inside the three-jaw chuck 2, then the jaws 22 in the three-jaw chuck 2 are controlled by a wrench to slide towards the center of the three-jaw chuck 2 synchronously, at the moment, the inclined surfaces of the extrusion blocks 23 at the end parts of the jaws 22 gradually extrude the inclined end surfaces of the movable rings 5 on one side, so that the movable rings 5 drive the locking rods 51 at the other end to slide towards the inside of the locking grooves 61 under the action of the extrusion blocks 23, at the moment, the locking rods 51 are gradually retracted into the inside of the locking grooves 61, so that the fixed chambers formed by the movable rings 5 and the fixed rings 6 are gradually reduced, the workpieces positioned in the fixed chambers are fixed and limited, and then the controller controls the machine tool to process the workpieces; the elastic protective layer 64 arranged on the inner ring side faces of the movable ring 5 and the fixed ring 6 can effectively protect contacted workpieces, reduce abrasion and workpiece damage caused by direct contact of the workpieces with the surfaces of the movable ring 5 and the fixed ring 6, and when the protective layer needs to be replaced, only the chassis 4 needs to drive the fixed ring 6 and the movable ring 5 to slide out of the three-jaw chuck 2 for replacement, so that the damage of the clamping jaws 22 is reduced conveniently and quickly; the side wall of the clamping groove 21 is provided with the positioning block 3, so that the positioning block 3 can position the sliding distance at the bottom end of the clamping jaw 22, the clamping force of the clamping jaw 22 on the workpiece is effectively controlled, and the influence on the machining of the workpiece caused by over-tight or over-loose stress applied to the workpiece by the clamping jaw 22 is reduced; the invention has the beneficial effects that: through setting up the locking module in that three-jaw chuck 2 is inside for jack catch 22 presss from both sides the work piece through the loose ring 5 in the locking module and presss from both sides fixedly with solid fixed ring 6 is indirect, has not only improved three-jaw chuck 2's fixed effect, can also effectual improvement work piece's machining precision and processingquality.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are given by way of illustration of the principles of the present invention, and that various changes and modifications may be made without departing from the spirit and scope of the invention as defined by the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (6)
1. A machine tool for mechanical finish machining comprises a frame (1), a tool rest (11), a tailstock (12) and a three-jaw chuck (2), wherein the tool rest (11) is located in the middle of the frame (1), the tailstock (12) is located at one end of the frame (1), and the three-jaw chuck (2) is located at the other end of the frame (1); the method is characterized in that: clamping grooves (21) which are uniformly distributed in an annular mode are formed in the three-jaw chuck (2), clamping jaws (22) which can slide synchronously in the clamping grooves (21) are arranged in the clamping grooves, extrusion blocks (23) are arranged at the end portions of the clamping jaws (22), and one ends of the extrusion blocks (23) are arranged to be inclined planes; the side wall of the clamping groove (21) is provided with a positioning block (3), and the positioning block (3) can position the sliding distance of the bottom end of the clamping jaw (22); the locking module is arranged inside the three-jaw chuck (2), the locking module comprises a chassis (4), a movable ring (5) and a fixing ring (6), the chassis (4) is connected to the inner end of the three-jaw chuck (2) in a sliding manner, the inner diameter and the outer diameter of the movable ring (5) are the same as those of the fixing ring (6), elastic protective layers (64) are arranged on the inner ring side surfaces of the movable ring (5) and the fixing ring (6), the inner end surfaces of the movable ring (5) are connected to the chassis (4) in a sliding manner, the movable ring (5) and the fixing ring (6) are symmetrically distributed at two ends of the extrusion block (23) in a two-to-two group manner, the movable ring (5) is arranged on one side close to the inclined surface of the extrusion block (23), one end of the movable ring (5) close to the inclined surface of the extrusion block (23) is arranged to be inclined surface matched with the inclined surface of the extrusion block, and the other end of the movable ring (5) is connected with a curved locking rod (51), the end faces of the fixing rings (6) on one side of the locking rod (51) are provided with locking grooves (61) matched with the locking rod (51); the machine tool is characterized in that a controller is installed on the machine frame (1), and the controller is used for controlling automatic operation of the machine tool.
2. A machine tool for mechanical finishing according to claim 1, characterized in that: one of them be equipped with stopper (62) on the outer loop side of solid fixed ring (6), be provided with on the inner loop side of three-jaw chuck (2) with stopper (62) assorted spacing groove (24), stopper (62) can insert to inside and the block locking with it of a spacing groove (24).
3. A machine tool for mechanical finishing according to claim 2, characterized in that: be provided with No. two spacing grooves (63) on solid fixed ring (6) side of stopper (62) bottom, stopper (62) and No. two spacing grooves (63) the inner is connected with the spring, No. three spacing grooves (25) along solid fixed ring (6) radial direction are provided with in a spacing groove (24) the inner, be provided with working chamber (7) on three-jaw chuck (2) of No. three spacing groove (25) position department, No. three spacing groove (25) the inner is linked together with working chamber (7) the inner side.
4. A machine tool for mechanical finishing according to claim 3, characterized in that: the side face of the inner end of the working cavity (7) is provided with a sliding groove (71), a sliding plate (72) is connected in the sliding groove (71) in a sliding mode, the ends of the sliding plate (72) and the limiting block (62) are respectively provided with a magnet (73), and the magnets (73) are the same in magnetism.
5. A machine tool for mechanical finishing according to claim 4, characterized in that: slide (72) top is equipped with sucking disc (74), sucking disc (74) can adsorb on the top surface of working chamber (7), and sucking disc (74) adsorbed working chamber (7) top surface one side is provided with disappointing hole (75).
6. A machine tool for mechanical finishing according to claim 1, characterized in that: locating piece (3) inside threaded connection has positioning bolt (8), positioning bolt (8) top surface can be fixed a position the sliding distance of jack catch (22) bottom.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911255838.4A CN110976933B (en) | 2019-12-10 | 2019-12-10 | Machine tool for mechanical finish machining |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911255838.4A CN110976933B (en) | 2019-12-10 | 2019-12-10 | Machine tool for mechanical finish machining |
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| Publication Number | Publication Date |
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| CN110976933A CN110976933A (en) | 2020-04-10 |
| CN110976933B true CN110976933B (en) | 2021-10-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201911255838.4A Active CN110976933B (en) | 2019-12-10 | 2019-12-10 | Machine tool for mechanical finish machining |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN117047652A (en) * | 2023-09-13 | 2023-11-14 | 哈尔滨理工大学 | Self-centering and adjustable pretightening force type ultrasonic vibration grinding clamp for internal spline |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060115337A1 (en) * | 2004-12-01 | 2006-06-01 | Fusao Higashi | Runout eliminating collet chuck |
| CN201049426Y (en) * | 2007-05-25 | 2008-04-23 | 平原机器厂（新乡） | Claw correcting tool for repairing three-jaw chuck |
| CN101758257B (en) * | 2009-11-28 | 2012-03-21 | 芜湖长胜机械制造有限公司 | Three-jaw chuck |
| CN204867492U (en) * | 2015-08-18 | 2015-12-16 | 常州市尼尔司机械有限公司 | From lock three -jaw chuck |
| US9887120B2 (en) * | 2015-11-03 | 2018-02-06 | Lam Research Ag | Apparatus for treating surfaces of wafer-shaped articles |
| CN106513732A (en) * | 2016-11-21 | 2017-03-22 | 中国电子科技集团公司第四十八研究所 | Self-centering multi-claw chuck device |
| CN107716967A (en) * | 2017-10-26 | 2018-02-23 | 镇江市丹徒区石马机械铸造厂 | A kind of lathe clamping device of convenient use |
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Effective date of registration: 20240314 Address after: 519000, 1st floor, West Block, Building 4, Wufu Village, Jing'an Town, Doumen District, Zhuhai City, Guangdong Province Patentee after: Zhuhai Hongxinshun Precision Machinery Co.,Ltd. Country or region after: China Address before: 246011 No. 1318 Jixian North Road, Anqing City, Anhui Province Patentee before: ANQING NORMAL University Country or region before: China |
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