Workpiece angle adjusting device for vertical machining center
Technical Field
The invention relates to the technical field of vertical machining center clamps, in particular to a workpiece angle adjusting device for a vertical machining center.
Background
The vertical machining center is a machining center with a spindle axis perpendicular to the workbench, and is mainly suitable for machining complex parts such as plates, discs, dies and small shells. The vertical machining center can finish the working procedures of milling, boring, drilling, tapping, cutting threads and the like. When the vertical machining center is machining, a workpiece needs to be fixedly clamped on a clamp of a machining table.
The existing vertical machining center clamp is usually a three-jaw chuck and a bench vice, the three-jaw chuck is mainly used for fixing cylindrical workpieces, the bench vice is mainly used for clamping rectangular workpieces, the existing clamp cannot be suitable for clamping various workpieces, and because the clamping angles of clamping jaws are fixed, the clamping angles of the workpieces cannot be adjusted, the machining range is limited, in a document (application number: CN 202310725939.3), a vertical machining center clamp is disclosed, the clamp can clamp a plurality of workpieces at one time, the clamping angles of the workpieces are also fixed, part of included angles are realized by enabling the clamp to rotate, but the method leads to poor circumferential stability of the clamp, and particularly in the vertical machining center, a tool which vertically rotates applies certain circumferential force to the workpieces, so that the stability of the clamp is easy to influence.
Disclosure of Invention
The invention aims to solve the problems and provides a workpiece angle adjusting device for a vertical machining center.
The invention adopts the following technical scheme for realizing the purposes:
The utility model provides a vertical machining center is with work piece angle adjusting device, includes the base, the top fixed mounting of base has the plummer, six sets of straight line spouts have been seted up to the inside of plummer, six sets of straight line spouts are annular symmetric distribution, the bottom rotation of plummer is installed and is changeed the cover, three sets of installation annular have been seted up in the outside of changeing the cover, three sets of installation annular's inside is rotated and is installed the lantern ring, the outside fixed mounting of lantern ring has two sets of arc guide rails, two sets of arc guide rails are annular distribution, the inside sliding connection of arc guide rail has the centre gripping bracing piece, and the centre gripping bracing piece runs through straight line spout, the top of centre gripping bracing piece is provided with the chuck;
the sliding cavity is correspondingly designed with the mounting ring groove, a contact switch is fixedly arranged in the sliding cavity, a shifting block is connected in the sliding cavity in a sliding manner, a contact piece is arranged on the outer side of the shifting block, a top spring is arranged between the shifting block and the inner wall of the sliding cavity, a push rod is arranged on one side, close to the inner part of the rotating sleeve, of the shifting block, the push rod penetrates through the rotating sleeve, an inner shifting groove is annularly formed in the inner wall of the lantern ring, the shifting block can be inserted into the inner shifting groove, and the cross sections of the shifting block and the inner shifting groove are triangular;
The lifting cylinder is fixedly arranged at the top of the base, the lifting lock sleeve is fixedly arranged at the top of the telescopic end of the lifting cylinder, and three groups of annular grooves are formed in the outer side of the lifting lock sleeve in an annular mode.
Further, the chuck rotates and installs the top at the centre gripping bracing piece, and the rotation center of chuck is provided with the torsional spring, the internal rotation of internal rotation groove has been seted up to the inside of chuck, and the internal rotation of internal rotation groove installs interior chuck, the arc groove has been seted up to the inner wall of internal rotation groove, the outside of interior chuck is provided with the slider, slider sliding connection in the arc groove, is provided with supporting spring between slider and the arc groove inner wall.
Further, the clamping heads and the inner clamping heads are semicircular.
Further, a tooth-shaped clamping piece is arranged on the outer side of the inner clamping head.
Further, the clamping support rod is a threaded rod, a plurality of groups of limit nuts are connected to the outer side threads of the threaded rod, and the arc-shaped guide rail and the bearing table are located between the adjacent limit nuts.
Further, a torque motor is fixedly arranged at the top of the base, a worm is fixedly arranged at the output end of the torque motor, a worm wheel is rotatably arranged at the top of the base, a driving wheel is fixedly arranged at the top of the worm wheel, the worm is meshed with the worm wheel, external gear teeth are arranged on the outer side of the rotating sleeve, and the driving wheel is meshed with the external gear teeth.
Further, the outer side of the lantern ring is provided with a mounting claw, and the arc-shaped guide rail is fixedly mounted on the mounting claw through a bolt.
Further, the top of base fixed mounting has outer pillar and interior pillar, plummer fixed mounting is on outer pillar, interior pillar runs through lift lock sleeve and plummer fixed connection.
Further, an angle scale is arranged at the top of the bearing table.
Further, mounting holes are formed in the periphery of the base.
The beneficial effects of the invention are as follows:
1. According to the invention, the rotating sleeve is controlled to rotate, the rotating sleeve drives the three groups of sleeves to simultaneously rotate, the lantern rings drive the arc-shaped guide rails to rotate, the arc-shaped guide rails drive the clamping support rods to slide along the linear sliding grooves, when the clamping support rods drive the clamping heads to be attached to workpieces, the group of lantern rings can rotate relative to the rotating sleeve, the rotating sleeve continuously drives other lantern rings to rotate, so that workpieces with different shapes can be clamped, the workpieces can be clamped at any angles, when round workpieces are clamped, the clamping points are annularly distributed on the outer surfaces of the workpieces, when rectangular workpieces are clamped, the clamping points are linearly distributed on the outer surfaces of the workpieces, and when the angles of the rectangular workpieces are changed, the clamping points incline along the edges of the workpieces, and the clamping stability is high.
2. The annular groove on the lifting lock sleeve is controlled to correspond to the ejector rod, the rotating sleeve drives the lantern ring to rotate through the elastic force of the ejector spring at the moment, so that the lantern ring can rotate relative to the rotating sleeve when being subjected to limiting force, the annular groove on the lifting lock sleeve is controlled to be misplaced with the ejector rod, the rotating sleeve is locked with the lantern ring, and clamping force adjustment can be performed at the moment, so that clamping shape adjustment and clamping force adjustment can be automatically completed, and clamping can be completed in a self-adaptive manner only by placing a workpiece on the top of the bearing table, and clamping is convenient.
Drawings
FIG. 1 is a schematic perspective view of the present invention;
FIG. 2 is an exploded view of the overall structure of the present invention;
FIG. 3 is a schematic cross-sectional view of the swivel and arcuate guide rail of the present invention;
FIG. 4 is an exploded view of the swivel and arcuate guide rail of the present invention;
FIG. 5 is a schematic cross-sectional view of a sleeve of the present invention;
FIG. 6 is a schematic view of a collar and arcuate guide rail of the present invention;
FIG. 7 is a schematic view of a clamping support bar and chuck according to the present invention;
FIG. 8 is a schematic view of a circular workpiece clamp of the present invention;
FIG. 9 is a schematic view of a rectangular workpiece clamp of the present invention;
FIG. 10 is a schematic view of the workpiece angle adjustment of the present invention.
The device comprises the following components of 1, a base, 11, an outer support, 12, an inner support, 13, a torque motor, 14, a worm, 15, a worm wheel, 16, a driving wheel, 17, a lifting cylinder, 2, a bearing table, 21, a linear chute, 3, a rotating sleeve, 31, a mounting ring groove, 32, a sliding cavity, 33, a contact switch, 34, an outer gear tooth, 35, a shifting block, 36, a contact piece, 37, a top spring, 38, a top rod, 4, a lantern ring, 41, an inner shifting groove, 42, a mounting claw, 5, an arc-shaped guide rail, 6, a clamping support rod, 7, a clamping head, 71, an inner clamping head, 72, a sliding block, 73, a supporting spring, 8, a lifting lock sleeve and 81 and an annular groove.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.
1-10, A workpiece angle adjusting device for a vertical machining center comprises a base 1, wherein a bearing table 2 is fixedly arranged at the top of the base 1, six groups of linear sliding grooves 21 are formed in the bearing table 2, the six groups of linear sliding grooves 21 are symmetrically distributed in an annular mode, a rotating sleeve 3 is rotatably arranged at the bottom of the bearing table 2, three groups of mounting annular grooves 31 are formed in the outer side of the rotating sleeve 3, a lantern ring 4 is rotatably arranged in the three groups of mounting annular grooves 31, two groups of arc-shaped guide rails 5 are fixedly arranged on the outer side of the lantern ring 4, the two groups of arc-shaped guide rails 5 are annularly distributed, clamping support rods 6 are connected in the arc-shaped guide rails 5 in a sliding mode, the clamping support rods 6 penetrate through the linear sliding grooves 21, and clamping heads 7 are arranged at the tops of the clamping support rods 6;
The inside of the rotating sleeve 3 is provided with a sliding cavity 32, the sliding cavity 32 is designed corresponding to the mounting ring groove 31, the inside of the sliding cavity 32 is fixedly provided with a contact switch 33, the inside of the sliding cavity 32 is slidably connected with a shifting block 35, the outer side of the shifting block 35 is provided with a contact piece 36, a top spring 37 is arranged between the shifting block 35 and the inner wall of the sliding cavity 32, one side of the shifting block 35, which is close to the inside of the rotating sleeve 3, is provided with a top rod 38, the top rod 38 penetrates into the rotating sleeve 3, the inner wall of the lantern ring 4 is provided with an inner shifting groove 41 in a ring shape, the shifting block 35 can be inserted into the inner shifting groove 41, and the cross sections of the shifting block 35 and the inner shifting groove 41 are all triangular;
The top fixed mounting of base 1 has lift cylinder 17, and the top fixed mounting of the flexible end of lift cylinder 17 has lift lock sleeve 8, and three sets of annular grooves 81 have been seted up to the outside annular of lift lock sleeve 8.
When in use, the base 1 is arranged on a processing table of a vertical processing center, then a workpiece is placed on the bearing table 2, at the moment, the ejector rod 38 corresponds to the annular groove 81, equipment is started, the rotating sleeve 3 rotates, a driving source of the rotating sleeve 3 is not limited, motor driving or other rotary driving modes can be directly adopted, the rotating sleeve 3 drives three groups of lantern rings 4 to rotate through the shifting block 35 and the inner shifting groove 41, the three groups of lantern rings 4 drive six groups of arc-shaped guide rails 5 to synchronously rotate, the arc-shaped guide rails 5 drive the clamping support rods 6 to slide along the linear sliding grooves 21, the clamping support rods 6 move towards the workpiece, the clamping support rods 6 drive the clamping heads 7 to approach the workpiece, when the clamping is round workpiece, the multiple groups of clamping heads 7 simultaneously contact with the workpiece, the workpiece is clamped in the middle of the bearing table 2, and after the clamping and positioning are finished, the three groups of lantern rings 4 cannot rotate, the rotating sleeve 3 rotates relative to the three groups of lantern rings 4, the rotating sleeve 3 drives the shifting block 35 to rotate relative to the lantern rings 4, the inner shifting groove 41 pushes the shifting block 35 to slide into the sliding cavity 32, the shifting block 35 presses the top spring 37, the shifting block 35 drives the top rod 38 to move into the annular groove 81, the shifting block 35 drives the contact piece 36 to touch and press the contact switch 33, the three groups of contact switches 33 are triggered simultaneously, an external controller receives feedback to control the operation of the lifting cylinder 17, the lifting cylinder 17 drives the lifting lock sleeve 8 to lift, the lifting lock sleeve 8 drives the annular groove 81 to be misplaced with the top rod 38, the lifting lock sleeve 8 presses the shifting block 35 into the inner shifting groove 41 through the top rod 38, at the moment, the lantern rings 4 and the rotating sleeve 3 are locked together, and the clamping force on a workpiece can be controlled by giving certain torque to the rotating sleeve 3;
When clamping rectangular workpieces, workers are required to hold the rectangular workpieces, when two corresponding groups of chucks 7 on the same lantern ring 4 are simultaneously contacted with the workpieces, under the limiting action of the workpieces, the two groups of clamping support rods 6 cannot be continuously combined, clamping points at two ends of the workpieces are one group, at the moment, the workpiece placing angle can be adjusted according to the requirements, the lantern ring 4 cannot continuously rotate, at the moment, the lifting cylinder 17 drives the shifting block 35 to rotate relative to the lantern ring 4, the inner shifting groove 41 pushes the shifting block 35 to slide into the sliding cavity 32, the shifting block 35 presses the top spring 37, the shifting block 35 drives the ejector rod 38 to move into the annular groove 81, the shifting block 35 drives the contact piece 36 to be contacted with the contact switch 33, the rotating sleeve 3 continuously drives other lantern rings 4 to rotate, when the six groups of chucks 7 are all contacted with the workpieces, the rotating sleeve 3 rotates relative to the three groups of lantern rings 4, the three groups of contact switch 33 are simultaneously triggered, the external controller receives feedback, the lifting cylinder 17 is controlled to operate, the lifting cylinder 17 drives the lifting sleeve 8 to lift the annular groove 81 to be misplaced with the ejector rod 38, the lifting sleeve 8 is pressed in the inner shifting block 35 through the ejector rod 38, the shifting block 35 is pressed into the inner shifting block groove 41, the contact sleeve 3 and the rotating sleeve 3 is locked with the rotating sleeve 3, and the clamping torque can be controlled to rotate together;
The device is used for positioning and clamping the workpiece firstly, then carrying out pressure clamping, and has high clamping stability, when clamping a round workpiece, the clamping is carried out for six-point circumference clamping, when clamping a rectangular workpiece, the clamping is carried out for six-point double-straight-line clamping, the workpiece with any angle can be clamped, the application range is wide, the circumferential stability of the clamped workpiece is high, and the vertical machining is more stable.
Further, an angle scale is arranged at the top of the bearing table 2, so that the angle of the workpiece can be conveniently adjusted.
Furthermore, the periphery of the base 1 is provided with mounting holes, and the base 1 is convenient to be mounted on a processing table of the vertical processing center through the arrangement of the mounting holes.
The second embodiment further includes, based on the above embodiment, that the chuck 7 is rotatably mounted at the top of the clamping support rod 6, the rotation center of the chuck 7 is provided with a torsion spring, an inner rotation groove is formed in the chuck 7, an inner chuck 71 is rotatably mounted in the inner rotation groove, an arc groove is formed in the inner wall of the inner rotation groove, a slide block 72 is arranged on the outer side of the inner chuck 71, the slide block 72 is slidably connected in the arc groove, and a support spring 73 is arranged between the slide block 72 and the inner wall of the arc groove.
Through this design, chuck 7 and interior chuck 71 can the appearance of self-adaptation work piece, can laminate the work piece surface better, and the centre gripping is more stable, and simultaneously when adjusting rectangle work piece angle, because chuck 7 can rotate, consequently can adjust rectangle work piece gesture more easily, the centre gripping is more convenient.
Further, the collet 7 and the inner collet 71 are both semi-circular.
Further, the tooth-shaped clamping pieces are arranged on the outer side of the inner clamping head 71, so that clamping is stable.
The third embodiment further comprises, based on the above embodiment, that the clamping support rod 6 is a threaded rod, the outer side of the threaded rod is connected with a plurality of groups of limit nuts in a threaded manner, and the arc-shaped guide rail 5 and the bearing table 2 are located between the adjacent limit nuts.
When the device is assembled, one limit nut is firstly threaded on the clamping support rod 6, then the clamping support rod 6 penetrates through the linear sliding groove 21, then two limit nuts are screwed, then the clamping support rod 6 penetrates through the arc-shaped guide rail 5, finally one limit nut is screwed, the bearing table 2 is clamped in the middle by the two limit nuts above, the arc-shaped guide rail 5 is clamped in the middle by the two limit nuts below, the clamping support rod 6 is further installed, the installation is convenient, the clamping support rod 6 can stably slide along the arc-shaped guide rail 5 and the linear sliding groove 21, through the arrangement of the embodiment, the clamping support rod 6 can be fixed on the bearing table 2 by screwing the limit nuts, the device can be clamped and locked, and the clamping stability can be further improved through secondary locking when large-sized workpieces are processed.
The fourth embodiment further comprises, based on the above embodiment, a torque motor 13 fixedly installed at the top of the base 1, a worm 14 fixedly installed at the output end of the torque motor 13, a worm wheel 15 rotatably installed at the top of the base 1, a driving wheel 16 fixedly installed at the top of the worm wheel 15, the worm 14 meshed with the worm wheel 15, an outer gear tooth 34 arranged at the outer side of the rotating sleeve 3, and the driving wheel 16 meshed with the outer gear tooth 34.
The embodiment is a rotating sleeve 3 driving structure, the torque motor 13 is electrified through control, the torque motor 13 drives the worm 14 to rotate, the worm 14 drives the worm wheel 15 to rotate, the worm wheel 15 drives the driving wheel 16 to rotate, the driving wheel 16 drives the rotating sleeve 3 to rotate through the outer gear teeth 34, the clamping force can be controlled more accurately through the arrangement of the torque motor 13, and the worm wheel 15 cannot drive the worm 14 to rotate through the design of the worm wheel and worm structure, so that after the torque motor 13 is powered off, the device is clamped stably.
Fifth embodiment, on the basis of the above embodiment, further comprises that the outer side of the collar 4 is provided with a mounting claw 42, and the arc-shaped guide rail 5 is fixedly mounted on the mounting claw 42 through a bolt, so that subsequent replacement and maintenance are facilitated.
The sixth embodiment further comprises, based on the above embodiment, an outer support 11 and an inner support 12 fixedly mounted on the top of the base 1, the bearing platform 2 is fixedly mounted on the outer support 11, and the inner support 12 penetrates through the lifting lock sleeve 8 to be fixedly connected with the bearing platform 2, so that the device is convenient to assemble.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.