CN101439417A - Method for clamping machine tool chuck and device for clamping machine tool chuck - Google Patents
Method for clamping machine tool chuck and device for clamping machine tool chuck Download PDFInfo
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- CN101439417A CN101439417A CNA200810182990XA CN200810182990A CN101439417A CN 101439417 A CN101439417 A CN 101439417A CN A200810182990X A CNA200810182990X A CN A200810182990XA CN 200810182990 A CN200810182990 A CN 200810182990A CN 101439417 A CN101439417 A CN 101439417A
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- pawl
- main shaft
- pressing plate
- trombone slide
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Abstract
The invention discloses a clamping method of a clamping head of a machine tool and a device for clamping the clamping head of the machine tool. The clamping method comprises the steps as follows: (1) a pull tube, a clamping head, a pressure plate and a spring are arranged in pore space of a principal shaft; and paws and an impelling device are arranged on the periphery of the principal shaft; (2) the paws are driven by the impelling device to rotate along the clockwise direction while the pressure plate is driven to move backwards, so as to synchronously drive the pull tube to move backwards until the clamping head is clamped by pressing of the principal shaft; (3) after the impelling device is rest, the pull tube and the paws are synchronously reset. The clamping device consists of a principal shaft, a pull tube, a clamping head, a pressure plate, paws, an impelling device and a spring. The paws are provided with supporting sections, impelling sections and forced sections. The impelling device is provided with a pressing piece for driving the forced sections of the paws to move toward the shaft axis of the principal shaft. The invention has the advantage that the device has small space usage, fast returning speed and improves the processing efficiency.
Description
Technical field
The invention belongs to machine tool chuck structure-design technique field, be specifically related to a kind of clamping means and a kind of machine tool chuck clamping device of machine tool chuck.
Background technology
Traditional machine tool clamping device, generally comprise be provided with vestibule main shaft, be arranged on trombone slide in main shaft vestibule, be arranged on trombone slide front end chuck, be arranged on trombone slide rear end pressing plate, be arranged on main shaft periphery and rotatable certain angle two to six pawls, for drive each pawl make its promote backward pressing plate and and then drive trombone slide mobile pressing device backward; Traditional pressing device is all generally to utilize sliding sleeve pushing pawl, and pawl is rotated counterclockwise, and pawl promotes pressing plate also again and then drives trombone slide to move backward, until chuck is clamped.
For example Chinese patent 02247374.2 discloses a kind of watchmaker's machine tool chuck, comprise handle, clutch bearing pin, slide block, clutch shifter, screw and three-jaw etc., its design feature is to adopt clutch shifter to replace traditional clutch circle, with clutch bearing pin, has replaced traditional slide block.
Chinese patent 200720106772.9 discloses a kind of clutch apparatus of watchmaker's machine tool chuck, comprise main shaft, in main shaft, be provided with concentric trombone slide, main shaft one end cover has sliding sleeve, on sliding sleeve, push away circle, one end of trombone slide is provided with the three-jaw seat that three-jaw is housed, on main shaft one end, be fixed with the three-jaw flap matching with three-jaw seat, trombone slide one end is provided with trombone slide cap, its design feature is: described three-jaw seat is provided with several three-jaw block holes, in three-jaw block hole, be inserted with three-jaw flap hold-down screw, on hold-down screw, cover has three-jaw regulating spring, three-jaw flap is provided with the corresponding screwed hole of through hole of taking with three-jaw, the head of hold-down screw screws in screwed hole through through hole.
Pawl in these two kinds of lathes is all driven and to rotate counterclockwise by sliding sleeve, its shortcoming be the enlargement ratio of power few, firmly large, trombone slide return speed is slow, component wear is serious, service life is short; Backboard is easily movable, and also the structure of cap causes its regulating step loaded down with trivial details, not convenient.
summary of the invention table
The object of this invention is to provide the clamping means that a kind of less, return speed of taking up room is fast, improve the machine tool chuck of working (machining) efficiency.
Another object of the present invention is to provide the machine tool chuck clamping device that a kind of less, return speed of taking up room is fast, improve working (machining) efficiency.
The technical scheme that realizes first object of the present invention is: a kind of clamping means of machine tool chuck, comprise the following steps:
1. in the vestibule of main shaft, trombone slide is set; Front end at trombone slide arranges chuck, in the rear end of trombone slide, pressing plate is set; Be provided for providing for trombone slide the spring of reseting elasticity; Two to six pawls and the pressing device moving back and forth of rotatable certain angle are set in main shaft periphery; One end of described each pawl is against on pressing plate;
2. pressing device moves under external force, and then drive each pawl to rotate clockwise around the center of rotation of each pawl, when each pawl rotates in the clockwise direction, the moving trombone slide of also mobile and then Timing Belt is mobile also until chuck is clamped under the extruding of main shaft backward backward to promote described pressing plate;
3. after pressing device homing, described trombone slide is homing under the elastic force effect of back-moving spring, and described each pawl is also synchronously driven and homing by pressing plate.
Above-mentioned steps 1. in, described spring is positioned at main shaft vestibule and is set on trombone slide, one end of described spring is against on main shaft, the other end is against on trombone slide; Described pressing device arranges with main shaft is concentric, and can move back and forth along main-shaft axis direction; Described each pawl is provided with for the support portion as center of rotation, for promoting described pressing plate mobile pushing part and for bearing the forced section of pressing device pressure backward; In the axial direction, described support portion is arranged between pushing part and forced section; Described each pawl is arranged between pressing plate and chuck, and the pushing part of each pawl is against on pressing plate;
Above-mentioned steps 2. in, when rotate in the clockwise direction the pushing part of each pawl, the pushing part of each pawl promotes described pressing plate and moves a certain distance backward on axis direction, and then drives trombone slide to move a certain distance backward.
The technical scheme that realizes second object of the present invention is: a kind of machine tool chuck clamping device, comprise be provided with vestibule main shaft, be arranged on trombone slide in main shaft vestibule, be arranged on trombone slide front end chuck, be arranged on trombone slide rear end pressing plate, be arranged on main shaft periphery and rotatable certain angle two to six pawls, for drive each pawl make its promote backward pressing plate and and then drive trombone slide mobile pressing device and be used to trombone slide that the spring of reseting elasticity is provided backward; Described each pawl is provided with for the support portion as center of rotation, for promoting described pressing plate mobile pushing part and for bearing the forced section of pressing device pressure backward; In the axial direction, the pushing part of described each pawl is against on pressing plate, and the forced section of each pawl is arranged on the one end away from pressing plate, and described support portion is arranged between pushing part and forced section; Described pressing device is provided with the forced section that can promote described each pawl towards the pressing piece that approaches spindle axis line direction and move.
In technique scheme, described spring is positioned at main shaft vestibule and is set on trombone slide, and one end of described spring is against on main shaft, and the other end is against on trombone slide; Described pressing device arranges with main shaft is concentric, and can move back and forth along main-shaft axis direction.
In technique scheme, the support portion of described each pawl is provided with circular hole, and described main shaft is provided with the pivot pin for matching with this circular hole; Pressing piece in described pressing device is the sliding sleeve being set on main shaft, described sliding over apart from the nearer side of described pawl, its perforate is that outer imperial palace is little and be provided with round and smooth arcwall face or the bellmouth orifice of chamfered transition, described sliding in the process moving along the direction that approaches pawl, can overlap on the forced section that is pressed in described each pawl, under round and smooth arcwall face on perforate inwall or the squeezing action on inclined-plane, the forced section of each pawl is moved towards approaching spindle axis line direction.
In technique scheme, this clamping device also comprises the pawl support being arranged on main shaft, and described pawl support is provided with the semi-circular recesses of a ring-type on the end wall of a side of contiguous described pressing plate, is provided with in the axial direction the stopper slot identical with pawl quantity; The support portion of described each pawl is provided with the semicircle boss matching with pawl support semi-circular recesses, and its pushing part is provided with boss protrusion and that have arcwall face or inclined-plane; The semicircle boss of described each pawl support portion is arranged in the semi-circular recesses of pawl support, and the boss with arcwall face or inclined-plane of described each pawl pushing part is against on pressing plate, and the forced section of described each pawl is arranged in a corresponding stopper slot of pawl support; Described pawl in the process of rotating, stopper slot described in the extended and indentation of its forced section.
In technique scheme, the pressing piece in described pressing device comprises the bearing that is set on pawl support and for driving described bearing mobile driving member in axial direction on pawl support.
In technique scheme, described pressing device is rectilinearly-movable pressing device or swing type pressing device; When described pressing device is rectilinearly-movable pressing device, described driving member comprises the cylinder/hydraulic cylinder that is provided with vestibule, and described main shaft is through the vestibule of described cylinder/hydraulic cylinder, and the piston of described cylinder/hydraulic cylinder is relative with described bearing to be fixedly installed; When described pressing device is swing type pressing device, described driving member comprises two bearing Fasteners, pushing lasso, a support column and a drive link; Described pushing lasso in the vertical direction is provided with two symmetrical connection holes, is provided with in the horizontal direction the connecting rod of two symmetrical protrusions; The basic configuration of described bearing Fastener is T shape, and one end is provided with the cylinder matching with the connection holes that pushes lasso, and the other end is provided with the groove matching with bearing; The cylinder of described bearing Fastener inserts in the connection holes of pushing lasso, and the other end is stuck on bearing by groove; Connecting rod and the support column of described pushing lasso are rotationally connected, and another connecting rod and the drive link of described pushing lasso are rotationally connected.
In technique scheme, when described pressing device is swing type pressing device, described pressing device also comprises Manual operation handle or cylinder or hydraulic cylinder, and described drive link is connected with the piston of described Manual operation handle or cylinder or hydraulic cylinder.
In technique scheme, described pressing plate comprise be provided with the internal threaded nut of breach and screw, the briquetting matching with notch geometry, for pushing up the lock-screw of pressing briquetting; The breach of described pressing plate arranges vertically, and the screw of described pressing plate is disposed radially and is positioned at the central authorities of breach; Described lock-screw) be arranged in screw; The outside of described briquetting is provided with screw thread; The shape approximation of described breach and described briquetting is in trapezoidal.
The present invention has positive effect:
(1) in the inventive method, turn clockwise pawl and then promote the method that pressing plate moves backward of employing, finally realizes the clamping of chuck, promising trombone slide is also set simultaneously and resets the spring of reseting elasticity is provided, this structure can utilize spring to make trombone slide Rapid reset, improves working (machining) efficiency; In addition, the present invention adopts the pawl turn clockwise to promote the method that pressing plate moves backward, and the pawl being rotated counterclockwise with traditional employing promotes the method that pressing plate moves backward and compares, and can make whole clamping device have the less advantage that takes up room.
(2) in product of the present invention, be provided with the spring that reseting elasticity is provided for trombone slide; In pressing device, being provided with the forced section that can promote described each pawl moves towards approaching spindle axis line direction---and be also the pressing piece that pawl is turned clockwise, it is less that this structure has product of the present invention to take up room, the advantage that working (machining) efficiency improves.The inventive method can reduce each pawl pin holding capacity with multijaw work such as two pawls, three-jaw, four paws, six pawls, and pawl pin should not be worn and torn and rupture.
(3) in the present invention, the support portion of described each pawl is provided with circular hole, and described main shaft is provided with the pivot pin for matching with this circular hole; Pressing piece in described pressing device is the sliding sleeve being set on main shaft, the perforate of sliding sleeve is arranged to outer imperial palace little and be provided with round and smooth arcwall face or the bellmouth orifice of chamfered transition, described, slide in the process moving along the direction that approaches pawl, utilize this bellmouth orifice cover to be pressed on the forced section of described each pawl, utilization is arranged on round and smooth arcwall face on bellmouth orifice inwall or the squeezing action on inclined-plane, the forced section of each pawl is moved, even if also pawl clockwise rotates towards approaching spindle axis line direction; Compare with traditional clamping device, have advantages of simple in structure.
(4) in the present invention, this clamping device also comprises the pawl support being arranged on main shaft, and described pawl support is provided with the semi-circular recesses of a ring-type on the end wall of a side of contiguous described pressing plate, is provided with in the axial direction the stopper slot identical with pawl quantity; The support portion of described each pawl is provided with the semicircle boss matching with pawl support semi-circular recesses, and its pushing part is provided with boss protrusion and that have arcwall face or inclined-plane; The semicircle boss of described each pawl support portion is arranged in the semi-circular recesses of pawl support, and the boss with arcwall face or inclined-plane of described each pawl pushing part is against on pressing plate, and the forced section of described each pawl is arranged in a corresponding stopper slot of pawl support; Described pawl in the process of rotating, stopper slot described in the extended and indentation of its forced section; In this structure, the supporter that utilizes pawl support to rotate as pawl, replaced traditional pivot pin, its advantage is that in pawl support, the end wall for the support portion of support claw can be done thicklyer, pawl, due to without axis hole is set, so also can the support portion of pawl be done thicklyer, makes the bearing capacity of the support portion of pawl and the end wall of pawl support better simultaneously, compare with traditional clamping device that axis hole need to be set, effectively avoid axis hole because bearing the excessive phenomenon rupturing of pressure; Simultaneously, because the bearing capacity of the support portion of pawl and the end wall of pawl support is better, can use the pawl with larger enlargement ratio, only need by less power, be applied on the pressing piece in pressing device, can by pawl promote pressing plate and and then drive pull bar to move backward until clamping collet, so also have advantages of that power consumption is less.In addition, because pawl all contracts in the stopper slot of pawl support at ordinary times, so it is less also to have advantages of that integral body takes up room.
(5) in product of the present invention, when the pressing piece in described pressing device is selected bearing, have not easy to wearly, resistance is few, and noise is little, the advantage that service life is longer.
(6) in product of the present invention, when described pressing device is swing type pressing device, the piston of cylinder or hydraulic cylinder directly can be connected with drive link, can obtain the advantage of automation, its manufacturing cost is lower.
(7) in product of the present invention, when described pressing device is rectilinearly-movable pressing device, due to be vertically rectilinear translation as the bearing of pressing piece, so there is the good advantage of abrasion resistance properties.
(8) in product of the present invention, described pressing plate comprise be provided with the internal threaded nut of breach and screw, the briquetting matching with notch geometry, for pushing up the lock-screw of pressing briquetting; The breach of described pressing plate arranges vertically, and the screw of described pressing plate is disposed radially and is positioned at the central authorities of breach; Described lock-screw) be arranged in screw; The outside of described briquetting is provided with screw thread; The shape approximation of described breach and described briquetting is in trapezoidal, the pressing plate of this structure, not only when being promoted backward by pawl, can synchronously drive trombone slide, himself be simultaneously also a governor motion, rotating nut can make self along trombone slide, to move forward and backward, for regulating the spacing between self and pawl, after mixing up spacing, only need to screw lock-screw, suppress briquetting, can be self being fixed on trombone slide; This kind of pressing plate can be finely tuned, and has and regulate sensitive, advantage easily.
Accompanying drawing explanation
Fig. 1 be the first structure of the present invention partly cut open structural representation;
Fig. 2 is a kind of perspective view of machine tool chuck clamping device shown in Fig. 1;
The perspective view of Fig. 3 when to be machine tool chuck clamping device shown in Fig. 2 observe from another angle;
Fig. 4 is a kind of perspective view of the median claw of machine tool chuck clamping device shown in Fig. 1 support;
The perspective view of Fig. 5 when to be the support of pawl shown in Fig. 4 observe from another angle;
Fig. 6 be the support of pawl shown in Fig. 4 partly cut open structural representation;
Fig. 7 is a kind of perspective view of machine tool chuck clamping device median claw shown in figure Fig. 1;
The perspective view of Fig. 8 when to be pawl shown in Fig. 7 observe from another angle;
Fig. 9 be pawl shown in Fig. 7 partly cut open structural representation;
Figure 10 is a kind of perspective view of the middle (center) bearing of machine tool chuck clamping device shown in Fig. 1 Fastener;
A kind of perspective view of Figure 11 when to be the Fastener of bearing shown in Figure 10 observe from another angle;
Figure 12 is a kind of perspective view that pushes lasso shown in Fig. 1 in machine tool chuck clamping device;
Figure 13 is a kind of perspective view of the center platen of machine tool chuck clamping device shown in Fig. 1;
Figure 14 is a kind of perspective view of briquetting in pressing plate shown in Figure 13;
Figure 15 is the kind perspective view of nut in pressing plate shown in Figure 13;
Figure 16 is the sectional structure chart that adopts the head that shown in Fig. 1, machine tool chuck clamping device is made;
Figure 17 is turn an angle pusher dynamic pressure plate drive the sectional structure schematic diagram of trombone slide of the pawl in head shown in Figure 16;
Figure 18 be adopt head that the second structure of the present invention makes partly cut open structural representation;
Figure 19 be the pawl in head shown in Figure 18 turn an angle pusher dynamic pressure plate and drive trombone slide partly cut open structural representation;
Figure 20 is a kind of structural representation of pressing device in head shown in Figure 18;
Figure 21 be adopt head that the third structure of the present invention makes partly cut open structural representation;
Figure 22 is a kind of structural representation of the median claw of head shown in Figure 21.
Reference numeral is: main shaft 1, vestibule 11, trombone slide 2, chuck 21, pressing plate 22, internal threaded nut 221, breach 2211, screw 2212, briquetting 222, screw thread 2221, lock-screw 223, pawl 3, support portion 31, circular hole 311, semicircle boss 312, pushing part 32, boss 321, forced section 33, pressing device 4, pressing piece 41, driving member 42, cylinder/hydraulic cylinder 421, vestibule 422, piston 423, plug 4231, air inlet 4232, bearing Fastener 424, cylinder 4241, groove 4242, pushing lasso 425, connection holes 4251, connecting rod 4252, support column 426, drive link 427, operating grip, cylinder 44, piston 441, bearing 46, spring 5, pivot pin 6, sliding sleeve 7, perforate 71, pawl support 8, end wall 81, semi-circular recesses 82, stopper slot 83, headstock 91, belt pulley 92, bearing 93.
Tool is stopped embodiment
(embodiment 1, machine tool chuck clamping device)
Fig. 1 to Figure 17 has shown a kind of specific embodiment of the present invention, wherein Fig. 1 be the first structure of the present invention partly cut open structural representation; Fig. 2 is a kind of perspective view of machine tool chuck clamping device shown in Fig. 1; The perspective view of Fig. 3 when to be machine tool chuck clamping device shown in Fig. 2 observe from another angle; Fig. 4 is a kind of perspective view of the median claw of machine tool chuck clamping device shown in Fig. 1 support; The perspective view of Fig. 5 when to be the support of pawl shown in Fig. 4 observe from another angle; Fig. 6 be the support of pawl shown in Fig. 4 partly cut open structural representation; Fig. 7 is a kind of perspective view of machine tool chuck clamping device median claw shown in figure Fig. 1; The perspective view of Fig. 8 when to be pawl shown in Fig. 7 observe from another angle; Fig. 9 be pawl shown in Fig. 7 partly cut open structural representation; Figure 10 is a kind of perspective view of the middle (center) bearing of machine tool chuck clamping device shown in Fig. 1 Fastener; A kind of perspective view of Figure 11 when to be the Fastener of bearing shown in Figure 10 observe from another angle; Figure 12 is a kind of perspective view that pushes lasso shown in Fig. 1 in machine tool chuck clamping device; Figure 13 is a kind of perspective view of the center platen of machine tool chuck clamping device shown in Fig. 1; Figure 14 is a kind of perspective view of briquetting in pressing plate shown in Figure 13; Figure 15 is the kind perspective view of nut in pressing plate shown in Figure 13; Figure 16 is the sectional structure chart that adopts the head that shown in Fig. 1, machine tool chuck clamping device is made; Figure 17 is turn an angle pusher dynamic pressure plate drive the sectional structure schematic diagram of trombone slide of the pawl in head shown in Figure 16.
The present embodiment is a kind of instrument lathe chuck clamping device, see Fig. 1 to Figure 15, this chuck clamping device comprise be provided with vestibule 11 main shaft 1, be arranged on trombone slide 2 in main shaft vestibule 11, be arranged on trombone slide 2 front ends chuck 21, be arranged on trombone slide 2 rear ends pressing plate 22, be arranged on main shaft 1 periphery and rotatable certain angle six pawls 3, for drive each pawl 3 make its promote backward pressing plate 22 and and then drive trombone slide 2 backward mobile pressing device 4, be arranged on the pawl support 8 on main shaft 1, and be used to trombone slide 2 that the spring 5 of reseting elasticity is provided; Described spring 5 is positioned at main shaft 1 vestibule 11 and is set on trombone slide 2, and one end of described spring 5 is against on main shaft 1, and the other end is against on trombone slide 2; Described pressing device 4 and the concentric setting of main shaft 1, and can move back and forth along main shaft 1 axis direction.
Described each pawl 3 is provided with for the support portion 31 as center of rotation, for promoting described pressing plate 22 mobile pushing part 32 and for bearing the forced section 33 of pressing device 4 pressure backward; In the axial direction, the pushing part 32 of described each pawl 3 is against on pressing plate 22, and the forced section 33 of each pawl 3 is arranged on the one end away from pressing plate 22, and described support portion 31 is arranged between pushing part 32 and forced section 33;
Described pressing device 4 is provided with the forced section 33 that can promote described each pawl 3 towards the pressing piece 41 that approaches main shaft 1 direction of axis line and move.
Described pawl support 8 is provided with the semi-circular recesses 82 of a ring-type on the end wall 81 of a side of contiguous described pressing plate 22, is provided with in the axial direction the stopper slot 83 identical with pawl 3 quantity; The support portion 31 of described each pawl 3 is provided with the semicircle boss 312 matching with pawl support 8 semi-circular recesses 82, its pushing part 32 is provided with boss 321 protrusion and that have arcwall face or inclined-plane, in the present embodiment, its pushing part 32 is provided with boss 321 protrusion and that have arcwall face; The semicircle boss 312 of described each pawl 3 support portions 31 is arranged in the semi-circular recesses 82 of pawl support 8, the boss with arcwall face 321 of described each pawl pushing part 32 is against on pressing plate 22, and the forced section 33 of described each pawl 3 is arranged in a corresponding stopper slot 83 of pawl support 8; Described pawl 3 in the process of rotating, stopper slot 83 described in the extended and indentation of its forced section 33.
The pressing device 4 of the present embodiment is swing type pressing device, comprises pressing piece 41 and cylinder 44; Pressing piece 41 wherein comprises the bearing 46 that is set on pawl support 8 and for driving described bearing 46 mobile driving member 42 in axial direction on pawl support 8.Described driving member 42 comprises two bearing Fasteners 424, pushing lasso 425, support column 426 and a drive link 427; Described pushing lasso 425 in the vertical directions are provided with two symmetrical connection holes 4251, are provided with in the horizontal direction the connecting rod 4252 of two symmetrical protrusions; The basic configuration of described bearing Fastener 424 is T shapes, and one end is provided with the cylinder 4241 matching with the connection holes 4251 that pushes lasso 425, and the other end is provided with the groove 4242 matching with bearing 46; The cylinder 4241 of described bearing Fastener 424 inserts in the connection holes 4251 of pushing lasso 425, and the other end is stuck on bearing 46 by groove 4242; A connecting rod 4252 and the support column 426 of described pushing lasso 425 are rotationally connected, and another connecting rod 4252 of described pushing lasso 425 is rotationally connected with drive link 427.Described drive link 427 is connected with the piston 441 of cylinder 44.In other embodiments, can select Manual operation handle or hydraulic cylinder to replace the cylinder 44 in the present embodiment.
Pressing plate 22 in the present embodiment comprise be provided with the internal threaded nut 221 of breach 2211 and screw 2212, the briquetting 222 matching with breach 2211 shapes, for pushing up the lock-screw 223 of pressing briquetting 222; The breach 2211 of described pressing plate 22 arranges vertically, and the screw 2212 of described pressing plate 22 is disposed radially and is positioned at the central authorities of breach 2211; Described lock-screw 223 is arranged in screw 2212; The outside of described briquetting 222 is provided with screw thread 2221; The shape approximation of described breach 2211 and described briquetting 222 is in trapezoidal.
In the present embodiment, when described pressing device is swing type pressing device, the piston of cylinder or hydraulic cylinder directly can be connected with drive link, can obtain the advantage of automation, its manufacturing cost is lower.
(embodiment 2, machine tool chuck clamping device)
Figure 18 to 20 has shown the second specific embodiment of the present invention, wherein Figure 18 be adopt head that the second structure of the present invention makes partly cut open structural representation; Figure 19 be the pawl in head shown in Figure 18 turn an angle pusher dynamic pressure plate and drive trombone slide partly cut open structural representation; Figure 20 is a kind of structural representation of pressing device in head shown in Figure 18.
The present embodiment is substantially the same manner as Example 1, difference is: see Figure 18 to Figure 20, described pressing device 4 is rectilinearly-movable pressing devices, described driving member 42 comprises the cylinder/hydraulic cylinder 421 that is provided with vestibule 422, described main shaft 1 is through the vestibule 422 of described cylinder/hydraulic cylinder 421, the piston 423 of described cylinder/hydraulic cylinder 421 and relative being fixedly installed of described bearing 46, specifically utilize to be provided with externally threaded plug 4231 described bearing 46 is fixed on the inwall of described piston 423.
In the present embodiment, when described pressing device is rectilinearly-movable pressing device, due to be vertically rectilinear translation as the bearing of pressing piece, so there is the good advantage of abrasion resistance properties.
(embodiment 3, machine tool chuck clamping device)
Figure 21 to Figure 22 has shown the third specific embodiment of the present invention, wherein Figure 21 be adopt head that the third structure of the present invention makes partly cut open structural representation; Figure 22 is a kind of structural representation of the median claw of head shown in Figure 21.
The present embodiment is substantially the same manner as Example 1, sees Figure 21 to Figure 22, and difference is: the support portion 31 of described each pawl 3 is provided with circular hole 311, and described main shaft 1 is provided with the pivot pin 6 for matching with this circular hole 311; Pressing piece 41 in described pressing device 4 is the sliding sleeves 7 that are set on main shaft 1, described sliding sleeve 7 is at the nearer side of the described pawl 3 of distance, its perforate 71 is that outer imperial palace is little and be provided with round and smooth arcwall face or the bellmouth orifice of chamfered transition, in the process that described sliding sleeve 7 moves in the direction along approaching pawl 3, can overlap on the forced section 33 that is pressed in described each pawl 3, under round and smooth arcwall face on perforate 71 inwalls or the squeezing action on inclined-plane, the forced section 33 of each pawl 3 is moved towards approaching main shaft 1 direction of axis line.
(clamping means of embodiment 4, machine tool chuck)
The clamping method of work of machine tool chuck in above-described embodiment 1 to embodiment 3, comprises the following steps:
1. at the interior trombone slide 2 that arranges of vestibule 11 of main shaft 1; Front end at trombone slide 2 arranges chuck 21, in the rear end of trombone slide 2, pressing plate 22 is set; Be provided for providing for trombone slide 2 spring 5 of reseting elasticity; Two to six pawls 3 and the pressing device moving back and forth 4 of rotatable certain angle are set in main shaft 1 periphery; One end of described each pawl 3 is against on pressing plate 22;
2. pressing device 4 moves under external force, and then drive each pawl 3 to rotate clockwise around the center of rotation of each pawl 3, when each pawl 3 rotates in the clockwise direction, the moving trombone slide 2 of also mobile and then Timing Belt is mobile also until chuck 21 is clamped under the extruding of main shaft 1 backward backward to promote described pressing plate 22;
3. after pressing device 4 homings, described trombone slide 2 is homing under the elastic force effect of back-moving spring 5, and described each pawl 3 is also synchronously driven and homing by pressing plate 22.
Above-mentioned steps 1. in, described spring 5 is positioned at main shaft 1 vestibule 11 and is set on trombone slide 2, one end of described spring 5 is against on main shaft 1, the other end is against on trombone slide 2; Described pressing device 4 and the concentric setting of main shaft 1, and can move back and forth along main shaft 1 axis direction; Described each pawl 3 is provided with for the support portion 31 as center of rotation, for promoting described pressing plate 22 mobile pushing part and for bearing the forced section 33 of pressing device 4 pressure backward; In the axial direction, described support portion 31 is arranged between pushing part and forced section 33; Described each pawl 3 is arranged between pressing plate 22 and chuck 21, and the pushing part of each pawl 3 is against on pressing plate 22.
Above-mentioned steps 2. in, when rotate in the clockwise direction the pushing part of each pawl 3, the pushing part of each pawl 3 promotes described pressing plate 22 and moves a certain distance backward on axis direction, and then drives trombone slide 2 to move a certain distance backward.
In the present embodiment method, turn clockwise pawl and then promote the method that pressing plate moves backward of employing, finally realizes the clamping of chuck, promising trombone slide is also set simultaneously and resets the spring of reseting elasticity is provided, this structure can utilize spring to make trombone slide Rapid reset, improves working (machining) efficiency; In addition, the present invention adopts the pawl turn clockwise to promote the method that pressing plate moves backward, and the pawl being rotated counterclockwise with traditional employing promotes the method that pressing plate moves backward and compares, and can make whole clamping device have the less advantage that takes up room.
Above-described embodiment 1 to embodiment 3 has the following advantages:
(1) above-described embodiment 1 to embodiment 3, is provided with the spring that reseting elasticity is provided for trombone slide; In pressing device, being provided with the forced section that can promote described each pawl moves towards approaching spindle axis line direction---and be also the pressing piece that pawl is turned clockwise, it is less that this structure has product of the present invention to take up room, the advantage that working (machining) efficiency improves.The inventive method can reduce each pawl pin holding capacity with multijaw work such as two pawls, three-jaw, four paws, six pawls, and pawl pin should not be worn and torn and rupture.
(2) above-described embodiment 1 to embodiment 3, and the support portion of described each pawl is provided with circular hole, and described main shaft is provided with the pivot pin for matching with this circular hole; Pressing piece in described pressing device is the sliding sleeve being set on main shaft, the perforate of sliding sleeve is arranged to outer imperial palace little and be provided with round and smooth arcwall face or the bellmouth orifice of chamfered transition, described, slide in the process moving along the direction that approaches pawl, utilize this bellmouth orifice cover to be pressed on the forced section of described each pawl, utilization is arranged on round and smooth arcwall face on bellmouth orifice inwall or the squeezing action on inclined-plane, the forced section of each pawl is moved, even if also pawl clockwise rotates towards approaching spindle axis line direction; Compare with traditional clamping device, have advantages of simple in structure.
(3) above-described embodiment 1 to embodiment 3, described clamping device comprises the pawl support being arranged on main shaft, described pawl support is provided with the semi-circular recesses of a ring-type on the end wall of a side of contiguous described pressing plate, is provided with in the axial direction the stopper slot identical with pawl quantity; The support portion of described each pawl is provided with the semicircle boss matching with pawl support semi-circular recesses, and its pushing part is provided with boss protrusion and that have arcwall face or inclined-plane; The semicircle boss of described each pawl support portion is arranged in the semi-circular recesses of pawl support, and the boss with arcwall face or inclined-plane of described each pawl pushing part is against on pressing plate, and the forced section of described each pawl is arranged in a corresponding stopper slot of pawl support; Described pawl in the process of rotating, stopper slot described in the extended and indentation of its forced section; In this structure, the supporter that utilizes pawl support to rotate as pawl, replaced traditional pivot pin, its advantage is that in pawl support, the end wall for the support portion of support claw can be done thicklyer, pawl, due to without axis hole is set, so also can the support portion of pawl be done thicklyer, makes the bearing capacity of the support portion of pawl and the end wall of pawl support better simultaneously, compare with traditional clamping device that axis hole need to be set, effectively avoid axis hole because bearing the excessive phenomenon rupturing of pressure; Simultaneously, because the bearing capacity of the support portion of pawl and the end wall of pawl support is better, can use the pawl with larger enlargement ratio, only need by less power, be applied on the pressing piece in pressing device, can by pawl promote pressing plate and and then drive pull bar to move backward until clamping collet, so also have advantages of that power consumption is less.In addition, because pawl all contracts in the stopper slot of pawl support at ordinary times, so it is less also to have advantages of that integral body takes up room.
(4) above-described embodiment 1 to embodiment 3, when the pressing piece in described pressing device is selected bearing, has not easy to wearly, and resistance is few, and noise is little, the advantage that service life is longer.
(5) state embodiment 1 to embodiment 3, described pressing plate comprise be provided with the internal threaded nut of breach and screw, the briquetting matching with notch geometry, for pushing up the lock-screw of pressing briquetting; The breach of described pressing plate arranges vertically, and the screw of described pressing plate is disposed radially and is positioned at the central authorities of breach; Described lock-screw) be arranged in screw; The outside of described briquetting is provided with screw thread; The shape approximation of described breach and described briquetting is in trapezoidal, the pressing plate of this structure, not only when being promoted backward by pawl, can synchronously drive trombone slide, himself be simultaneously also a governor motion, rotating nut can make self along trombone slide, to move forward and backward, for regulating the spacing between self and pawl, after mixing up spacing, only need to screw lock-screw, suppress briquetting, can be self being fixed on trombone slide; This kind of pressing plate can be finely tuned, and has and regulate sensitive, advantage easily.
Obviously, the above embodiment of the present invention is only for example of the present invention is clearly described, and is not the restriction to embodiments of the present invention.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here exhaustive without also giving all embodiments.And these belong to apparent variation that spirit of the present invention extended out or change still among protection scope of the present invention.
Claims (10)
1, clamping means for machine tool chuck, comprise the following steps:
1. in the vestibule (11) of main shaft (1), trombone slide (2) is set; Front end at trombone slide (2) arranges chuck (21), in the rear end of trombone slide (2), pressing plate (22) is set; Be provided for providing for trombone slide (2) spring (5) of reseting elasticity; Two to six pawls (3) and the pressing device moving back and forth (4) of rotatable certain angle are set in main shaft (1) periphery; One end of described each pawl (3) is against on pressing plate (22);
2. pressing device (4) moves under external force, and then drive each pawl (3) to rotate clockwise around the center of rotation of each pawl (3), when each pawl (3) rotates in the clockwise direction, the moving trombone slide (2) of also mobile and then Timing Belt is mobile also until chuck (21) is clamped under the extruding of main shaft (1) backward backward to promote described pressing plate (22);
3. after pressing device (4) homing, described trombone slide (2) is homing under the elastic force effect of back-moving spring (5), and described each pawl (3) is also synchronously driven and homing by pressing plate (22).
2, the method for work of machine tool chuck according to claim 1, it is characterized in that: step 1. in, described spring (5) is positioned at main shaft (1) vestibule (11) and is set on trombone slide (2), it is upper that one end of described spring (5) is against main shaft (1), and the other end is against on trombone slide (2);
Described pressing device (4) and the concentric setting of main shaft (1), and can move back and forth along main shaft (1) axis direction;
Described each pawl (3) is provided with for the support portion as center of rotation (31), for promoting described pressing plate (22) mobile pushing part and for bearing the forced section (33) of pressing device (4) pressure backward; In the axial direction, described support portion (31) are arranged between pushing part and forced section (33); Described each pawl (3) is arranged between pressing plate (22) and chuck (21), and the pushing part of each pawl (3) is against on pressing plate (22);
Step 2. in, when rotate in the clockwise direction the pushing part of each pawl (3), the pushing part of each pawl (3) promotes described pressing plate (22) and moves a certain distance backward on axis direction, and then drives trombone slide (2) to move a certain distance backward.
3, a machine tool chuck clamping device, comprise be provided with vestibule (11) main shaft (1), be arranged on trombone slide (2) in main shaft vestibule (11), be arranged on trombone slide (2) front end chuck (21), be arranged on trombone slide (2) rear end pressing plate (22), be arranged on main shaft (1) periphery and rotatable certain angle two to six pawls (3), for drive each pawl (3) make its promote backward pressing plate (22) and and then drive trombone slide (2) mobile pressing device (4) backward; It is characterized in that:
Also comprise the spring (5) that is used to trombone slide (2) that reseting elasticity is provided;
Described each pawl (3) is provided with for the support portion as center of rotation (31), for promoting described pressing plate (22) mobile pushing part (32) and for bearing the forced section (33) of pressing device (4) pressure backward; In the axial direction, the pushing part (32) of described each pawl (3) is against on pressing plate (22), the forced section (33) of each pawl (3) is arranged on the one end away from pressing plate (22), and described support portion (31) are arranged between pushing part (32) and forced section (33);
Described pressing device (4) is provided with the forced section (33) that can promote described each pawl (3) towards the pressing piece (41) that approaches main shaft (1) direction of axis line and move.
4, machine tool chuck clamping device according to claim 3, it is characterized in that: described spring (5) is positioned at main shaft (1) vestibule (11) and is set on trombone slide (2), it is upper that one end of described spring (5) is against main shaft (1), and the other end is against on trombone slide (2); Described pressing device (4) and the concentric setting of main shaft (1), and can move back and forth along main shaft (1) axis direction.
5, machine tool chuck clamping device according to claim 3, it is characterized in that: the support portion (31) of described each pawl (3) is provided with circular hole (311), described main shaft (1) is provided with the pivot pin (6) for matching with this circular hole (311); pressing piece (41) in described pressing device (4) is the sliding sleeve (7) being set on main shaft (1), described sliding sleeve (7) is at the nearer side of distance described pawl (3), its perforate (71) is that outer imperial palace is little and be provided with round and smooth arcwall face or the bellmouth orifice of chamfered transition, in the process that described sliding sleeve (7) moves in the direction along approaching pawl (3), can overlap on the forced section (33) that is pressed in described each pawl (3), under round and smooth arcwall face on perforate (71) inwall or the squeezing action on inclined-plane, the forced section (33) of each pawl (3) is moved towards approaching main shaft (1) direction of axis line.
6, machine tool chuck clamping device according to claim 3, it is characterized in that: this clamping device also comprises the pawl support (8) being arranged on main shaft (1), described pawl support (8) is provided with the semi-circular recesses (82) of a ring-type on the end wall (81) of a side of contiguous described pressing plate (22), is provided with in the axial direction the stopper slot (83) identical with pawl (3) quantity; The support portion (31) of described each pawl (3) is provided with the semicircle boss (312) matching with pawl support (8) semi-circular recesses (82), and its pushing part (32) are provided with boss protrusion and that have arcwall face or inclined-plane (321); The semicircle boss (312) of described each pawl (3) support portion (31) is arranged in the semi-circular recesses (82) of pawl support (8), it is upper that the boss with arcwall face or inclined-plane (321) of described each pawl pushing part (32) is against pressing plate (22), and the forced section (33) of described each pawl (3) is arranged in a corresponding stopper slot (83) of pawl support (8); Described pawl (3) in the process of rotating, stopper slot (83) described in the extended and indentation of its forced section (33).
7, machine tool chuck clamping device according to claim 6, is characterized in that: the pressing piece (41) in described pressing device (4) comprises the bearing (46) that is set on pawl support (8) and for driving described bearing (46) mobile driving member (42) in axial direction on pawl support (8).
8, machine tool chuck clamping device according to claim 7, is characterized in that: described pressing device (4) is rectilinearly-movable pressing device (4) or swing type pressing device (4);
When described pressing device (4) is rectilinearly-movable pressing device, described driving member (42) comprises the cylinder/hydraulic cylinder (421) that is provided with vestibule (422), described main shaft (1) is through the vestibule (422) of described cylinder/hydraulic cylinder (421), the piston (423) of described cylinder/hydraulic cylinder (421) and relative being fixedly installed of described bearing (46);
When described pressing device (4) is swing type pressing device, described driving member (42) comprises two bearing Fasteners (424), pushing lasso (425), a support column (426) and a drive link (427); Described pushing lasso (425) in the vertical direction is provided with symmetrical two connection holes (4251), is provided with in the horizontal direction the connecting rod (4252) of two symmetrical protrusions; The basic configuration of described bearing Fastener (424) is T shape, one end is provided with the cylinder (4241) matching with the connection holes that pushes lasso (425) (4251), and the other end is provided with the groove (4242) matching with bearing (46); The cylinder (4241) of described bearing Fastener (424) inserts in the connection holes (4251) of pushing lasso (425), and the other end is stuck on bearing (46) by groove (4242); A connecting rod (4252) of described pushing lasso (425) is rotationally connected with support column (426), and another connecting rod (4252) of described pushing lasso (425) is rotationally connected with drive link (427).
9, machine tool chuck clamping device according to claim 8, it is characterized in that: when described pressing device (4) is swing type pressing device, described pressing device (4) also comprises Manual operation handle or cylinder (44) or hydraulic cylinder, and described drive link (427) is connected with the piston (441) of described Manual operation handle or cylinder (44) or hydraulic cylinder.
10, machine tool chuck clamping device according to claim 3, is characterized in that: described pressing plate (22) comprise be provided with the internal threaded nut (221) of breach (2211) and screw (2212), the briquetting (222) matching with breach (2211) shape, for pushing up the lock-screw (223) of pressing briquetting (222); The breach (2211) of described pressing plate (22) arranges vertically, and the screw (2212) of described pressing plate (22) is disposed radially and is positioned at the central authorities of breach (2211); Described lock-screw (223)) be arranged in screw (2212); The outside of described briquetting (222) is provided with screw thread (2221); The shape approximation of described breach (2211) and described briquetting (222) is in trapezoidal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200810182990 CN101439417B (en) | 2008-12-15 | 2008-12-15 | Device for clamping machine tool chuck |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200810182990 CN101439417B (en) | 2008-12-15 | 2008-12-15 | Device for clamping machine tool chuck |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101439417A true CN101439417A (en) | 2009-05-27 |
| CN101439417B CN101439417B (en) | 2013-12-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200810182990 Expired - Fee Related CN101439417B (en) | 2008-12-15 | 2008-12-15 | Device for clamping machine tool chuck |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101439417B (en) |
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| CN102059569A (en) * | 2010-10-29 | 2011-05-18 | 无锡迪奥机械有限公司 | Clamping chuck for automatic lathe |
| CN102423857A (en) * | 2011-12-05 | 2012-04-25 | 浙江华顺椅业有限公司 | Fastening structure suitable for steel pipe inner wall grooving machine |
| CN102489770A (en) * | 2011-12-05 | 2012-06-13 | 浙江华顺椅业有限公司 | Cutter |
| CN102490069A (en) * | 2011-12-08 | 2012-06-13 | 北京智博高科生物技术有限公司 | Fixture for conveying microtubes in welding process |
| CN102764899A (en) * | 2012-08-08 | 2012-11-07 | 山东国强五金科技有限公司 | Automatic square shaft turning machine |
| CN102975048A (en) * | 2012-11-30 | 2013-03-20 | 徐建 | Cutter clamp head of mechanical processing center |
| CN103481087A (en) * | 2013-09-22 | 2014-01-01 | 林春红 | Double-end machining air compressing machine tool clamping base with constant locking force and cooling function |
| CN103753323A (en) * | 2014-02-23 | 2014-04-30 | 张鸿来 | Automatic self-centering clamp |
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| CN109518366A (en) * | 2019-01-03 | 2019-03-26 | 中国兵器装备集团自动化研究所 | A kind of presser foot device of fine-tuning angle |
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| CN102059569A (en) * | 2010-10-29 | 2011-05-18 | 无锡迪奥机械有限公司 | Clamping chuck for automatic lathe |
| CN102423857A (en) * | 2011-12-05 | 2012-04-25 | 浙江华顺椅业有限公司 | Fastening structure suitable for steel pipe inner wall grooving machine |
| CN102489770A (en) * | 2011-12-05 | 2012-06-13 | 浙江华顺椅业有限公司 | Cutter |
| CN102490069A (en) * | 2011-12-08 | 2012-06-13 | 北京智博高科生物技术有限公司 | Fixture for conveying microtubes in welding process |
| CN102764899B (en) * | 2012-08-08 | 2015-04-22 | 山东国强五金科技有限公司 | Automatic square shaft turning machine |
| CN102764899A (en) * | 2012-08-08 | 2012-11-07 | 山东国强五金科技有限公司 | Automatic square shaft turning machine |
| CN102975048A (en) * | 2012-11-30 | 2013-03-20 | 徐建 | Cutter clamp head of mechanical processing center |
| CN103481087A (en) * | 2013-09-22 | 2014-01-01 | 林春红 | Double-end machining air compressing machine tool clamping base with constant locking force and cooling function |
| CN103481087B (en) * | 2013-09-22 | 2016-08-03 | 林春红 | There is constant locking force and band refrigerating function both-end processing pneumatics toolroom machine holder |
| CN103753323A (en) * | 2014-02-23 | 2014-04-30 | 张鸿来 | Automatic self-centering clamp |
| CN103753323B (en) * | 2014-02-23 | 2016-01-20 | 张鸿来 | Automatic self-centering fixture |
| CN104057340A (en) * | 2014-06-18 | 2014-09-24 | 贵州天义电器有限责任公司 | Lathe clamping device |
| CN104097079A (en) * | 2014-07-04 | 2014-10-15 | 宁波真和电器股份有限公司 | Clamp used for fixing net of shaver |
| CN104227599A (en) * | 2014-08-21 | 2014-12-24 | 南京信息职业技术学院 | Clamping mechanism |
| CN104227599B (en) * | 2014-08-21 | 2015-12-02 | 南京信息职业技术学院 | Clamping mechanism |
| CN105345972A (en) * | 2015-11-28 | 2016-02-24 | 渝北区千里马模具加工厂 | Device for removing burrs of square rubber work-pieces |
| CN105345972B (en) * | 2015-11-28 | 2017-08-29 | 渝北区千里马模具加工厂 | Square rubber workpiece deburring device |
| CN106392691A (en) * | 2016-12-08 | 2017-02-15 | 浙江达峰汽车技术有限公司 | Pipe fitting rotational clamping device |
| CN114042949A (en) * | 2017-05-26 | 2022-02-15 | 莱维克龙有限公司 | Clamping device, rotating or positioning device and method for extracting rotating shaft from rotating or positioning device |
| CN109623457A (en) * | 2018-12-14 | 2019-04-16 | 咸阳圣亚机电设备有限公司 | Speed-changer operation device housing lathe-use clamp and processing method |
| CN109518366A (en) * | 2019-01-03 | 2019-03-26 | 中国兵器装备集团自动化研究所 | A kind of presser foot device of fine-tuning angle |
| CN109968088A (en) * | 2019-04-16 | 2019-07-05 | 东创智能装备(深圳)有限公司 | A kind of dedicated permanent magnet synchronization motor spindle of longitudinal cutting machine tool |
| CN109926857A (en) * | 2019-04-23 | 2019-06-25 | 上海矢力机械设备有限公司 | A kind of clamping device and its driving method |
| CN109926857B (en) * | 2019-04-23 | 2024-04-12 | 上海矢力机械设备有限公司 | Driving method of clamping device |
| CN110842223A (en) * | 2019-10-25 | 2020-02-28 | 湖南中大创远数控装备有限公司 | Locking mechanism, main shaft mechanism and machine tool |
| CN112095069A (en) * | 2020-09-09 | 2020-12-18 | 安徽鼎恒实业集团有限公司 | Equipment for remanufacturing wheel set handle of railway locomotive wheel in plasma spraying mode |
| CN112356493A (en) * | 2020-10-23 | 2021-02-12 | 一重集团大连工程技术有限公司 | Clamping device for carbon electrode extruder |
| CN112356493B (en) * | 2020-10-23 | 2022-03-29 | 一重集团大连工程技术有限公司 | Clamping device for carbon electrode extruder |
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