CN2291242Y - Slotter cutter head - Google Patents

Abstract

The utility model relates to a machine tool accessory for mechanical cutting and forming equipment, more specifically to a milling head of a milling machine used for milling a narrow groove on the middle part of a knitting needle. The milling head is provided with a milling cutter shaft which can be rotated in high speed and can be fed longitudinally or transversely. A transverse feeding mechanism adopts two guide posts which are supported by a ball sleeve type bearing seat, and a longitudinal feeding mechanism is rigidly suspended on one end of each guide post. The guide posts are fed by cams on the other end of each guide post. A spring is arranged between the longitudinal feeding mechanism and a guide post fixing seat in order to reset the longitudinal feeding mechanism. The milling head can both be fed longitudinally and transversely, so two milled grooves can be formed in one step.

Description

Traverse slotter milling head

The utility model relates to the machine tool accessories of machine cut former.The milling machine milling head that specifically refers to the narrow groove of milling knitting needle head.This milling head is equipped with other anchor clamps and also is widely used in other Milling Process of the various high accuracy of knitting needle.

In knitting equipment industry, the processing of knitting needle needle tray is one critical process in the whole process of production at present, the quality of the whole Zhi Zhizhen of precision decision of its geomery.For guaranteeing machining accuracy, say it mainly is the kinematic accuracy of the milling cutter when determining the needle tray milling and the kinematic accuracy of portraitlandscape feed mechanism from equipment.The inventor is to the motion of the milling cutter rotary speed of cutter spindle particularly, and the influence factors such as axial float of smooth rotation and cutter shaft have been done comprehensive examination and improved design.Applied for utility model patent simultaneously with the utility model, it has only determined the shape and size precision of needle tray and the problem of automated production.Because knitting needle needle tray instructions for use decision, the length of groove are milling cutters moves milling and once just can meet the requirements of length, is to adopt twice clamping entirely in the market, milling is finished.This has just determined this elongated slot that twice clamping milling come out, the concentricity of groove and secondary groove, and the concentricity precision of coming out than a milling is low.Sometimes a collection of part that processes does not all reach requirement.Cause the raising of percent defective.And basic way remains the various kinematic accuracies of the milling head that solves milling machine.

The purpose of this utility model is intended to solve the elongated slot of machined needles knitting needle groove, does not need clamping twice, and once milling is finished on a milling machine.

The utility model is to realize by following technical scheme: the cutter spindle part of the milling head of milling machine, use the design of the design people in another utility model application, the single row angular contact ball bearing that adopts the axle front end to use two reversed arrangement to install, shaft rear end uses the rolling bearing of an arbitrary form, forms to rotatablely move to pay with axle bed to connect.Eliminated and adopted bearing shell to do the shortcoming that connector is paid in rotation, made the cutter spindle faster rotational speed, running steadily.Axle bed is used dovetail and is connected and fixed on milling cutter planker seat, and planker forms straight-line pair with vertical dovetail slideway and connects.Use prior art and finish moving both vertically of axle bed.Make the feed milling of milling cutter whereabouts, lift withdrawing then.Vertically soft connection of dovetail slideway and milling cutter planker applied compression spring.The key of crossfeed is to adopt two guide pillars, every guide pillar is supported by the diaxon bearing, the bearing shell of using in the bearing block is the ball cover, the ball cover of using in the bearing block connects the rigid suspended end at two guide pillars of longitudinal feed mechanism that vertical dovetail slideway and the milling cutter planker that is slidingly connected with it form with smooth cylinder formation straight-line pair.Longitudinal feed mechanism also can be the rectilinear motion that the guide pillar ball cover of another case application of the design people connects, or other prior art constructions form, want to guarantee the feeding form of precision, the other end of two guide pillars connects with cam via fork, cam promotes a fork, drive guide pillar and do intermittently laterally straight-line feed along the horizontal linear that ball cover center line in the bearing block forms, withdraw from dependence, respectively establish an extension spring in the guide pillar both sides between longitudinal feed mechanism and the guide pillar bearing block, make longitudinal feed mechanism that one power of pressing to guide pillar be arranged all the time, when cam rotates, impel guide pillar to promote fork and be close on the cam curved surface, reach traverse feed and withdraw from accurate.Ball cover is for establishing evenly distributed some through holes on the jacket wall of a circle cover, ball of panel in each hole, its ball diameter be greater than wall thickness, the center of ball should with the central lines of wall thickness.So far use the cutter spindle seat mechanism of another application and the longitudinal feed mechanism of vertical dovetail chute type, the ball of mixing the bearing block formula of the ad hoc meter of the utility model overlaps the guide pillar transverse feed mechanism of supporting, forms the traverse milling head.Send anchor clamps to the knitting needle on the milling machine and cooperate, reach twice milling moulding of a clamping, reach the purpose of this utility model.

Using a cam lifts the interior cutter spindle of axle bed on the end slipway, send the pin anchor clamps that pin is sent under the milling cutter, cutter spindle descends, the blade milling reaches adjusts the degree of depth, cam makes axle bed lift again, another guide pillar cam promoted fork and stirred two guide pillars and protract this moment, drove rigid suspendedly vertically to give mechanism's distance that moves forward, the cutter spindle milling secondary groove that falls again at this moment at the guide pillar front end.Cutter shaft lifts then, and fork retreats, and guide pillar is return original position in the effect of extension spring.The one action flow process is finished.

Diagram is the utility model the most typical a kind of easy embodiment, uses this scheme the utility model is further described.

Fig. 1-traverse slotter complete machine structure schematic diagram;

Fig. 2-cutter spindle holder structure schematic diagram;

Fig. 3-vertical and horizontal are given mechanism and are connected schematic diagram;

B-B cutaway view among Fig. 4-Fig. 3.

The drawing explanation:

1 adjustment seat, 2 adjustment screw, 3 axle beds, 4 bearings, 5 bearing glands, 6 covers, 7 cutter spindle belt pulleys, 8 packing rings, 9 cutter spindles, 10 tachometer discs, 11 gauge outfit bumping posts, 12 indicator brackets, 13 dial gauges, 14 single row angular contact ball bearings, 15 bearing outer separators, 16 bearing inner spacing collars, 17 nuts, 18 bearing glands, 19 folder milling cutter pads, 20 oil covers, 21 forks, 22 regulate bolt, and 23 advance screw, 24 joint covers, 25 bearing blocks, 26 guide pillar steel bushings, 27 ball covers, 28 clamps, 29 clamps, 30 columns, 31 scale connecting plates, 32 nuts, 33 knurled nuts, 34 central spindle of the spring, 35 stage clips, 36 adjustment (adjusting) levers, 37 bearing pins, 38 bearings, 39 bearing pins, 40 extension spring posts, 41 extension springs, 42 guide pillar bases, 43 fork bearing pins, 44 bearings, 45 little axles, 46 fork supports, 47 milling cutter planker seats, 48 longitudinal slide press strips, 49 longitudinal slides, 50 tight cutter nuts, 51 sleeves, 52 broach shells, 57 guide pillars.

Cutter spindle 9 in the milling head is installed in the axle bed 3, stretches out the cutter shaft front end dress milling cutter of axle bed 3 outsides, and it is by broach shell 52, and sleeve 51 and tight cutter nut 50 are installed on milling cutter on the cutter shaft.Rear end dress uses the belt pulley 7 of round belt, and the driving force of motor is passed to cutter spindle 9, and its rotating speed is obtained by tachometer disc 10.Axle bed 3 Inner Front Ends use two single row angular contact ball bearings 14 oppositely to install, and by spacer 15 and 16 location, regulate end play with nut 17.Backend application bearing arbitrarily gets final product, and uses single-row radial ball bearing 4, and two ends are sealed with bearing gland 5 and 18.Cutter spindle 9 is assembled into independent parts with axle bed 3.Axle bed profile band dovetail can be fitted together with milling cutter planker seat 47 dovetail grooves and is fixedly connected, and is fixed by a planker pressing plate.Be assembled into parts of rigid attachment.Milling cutter planker seat 47 slides in the dovetail groove of longitudinal slide 49.Column 30 is housed on longitudinal slide 49, fixes a scale connecting plate 31 with bolt on column 30, also be enclosed within on the central spindle of the spring 34 that is connected on the milling cutter planker seat 47 simultaneously, compression spring 35 is contained on the central spindle of the spring 34 between connecting plate and the planker seat.Nut 32 and knurled nut 33, adjust the relative position of planker seat 47 relative longitudinal slides 49, determined the milling cutter axle bed of installing 3 thereon, the position of relative workpiece, stage clip 35 assurance planker seats 47 answer positions are oppressed adjustment (adjusting) lever 36 all the time and are pressed on the curved surface of cam.Guarantee the groove depth of milling cutter milling and the accuracy of groove depth.The characteristic of this case is a crossfeed, and two guide pillars, 57 usefulness thread connection are on longitudinal slide 49, and being tightened by nut becomes rigid attachment.Every guide pillar is by the 25 level supports of two bearing blocks, bearing block 25 endoporus and guide pillar steel bushing 26 interference fit are ball cover 27 between steel bushing 26 and the guide pillar 57, what the ball of this programme overlapped 27 usefulness is copper sheathing, panel ball on request thereon, and it acts on the sand frame in the similar bicycle.Ball and steel bushing and guide pillar are to contact substantially, contact evenly, fit clearance is accurate, thereby motion is accurately steadily.Send the bearing 44 that is promoted fork 21 lower ends by cam before the guide pillar 57, fork turns over certain angle around fork bearing pin 43, and the process of formation reaches together with crossing feed of sending before longitudinal slide that hangs over the front and the axle bed.Guide pillar 57 backhauls are by hanging over the extension spring on the tension spring pin 40 41 on the longitudinal slide, and the other end hangs on the bearing block and finishes, and the pulling force with spring 41 when cam turns over peak, is return guide pillar and resetted.The bearing block of supporting two guide pillars is by being bolted on the guide pillar base 42, and just the base of milling head is fixed on the milling machine lathe bed.Be furnished with dial gauge 13 on the equipment, the user has been easy to use.

So far finished twice length feed and a traverse feed and reach purpose of design of the present utility model in a clamping, this enforcement is finished.

Claims (2)

1, a kind of cutter spindle of the milling cutter of rotation at a high speed that is equipped with, and the traverse slotter milling head that cutter spindle energy portraitlandscape is sent to, it is characterized in that crossfeed adopts two guide pillars, every guide pillar is supported by the diaxon bearing, the bearing shell of using in the bearing block is the ball cover, the ball cover forms straight-line pair with smooth cylinder and connects, the rigid suspended end of the longitudinal feed mechanism of milling head at two guide pillars, the other end of two guide pillars connects with cam via fork, between longitudinal feed mechanism and the guide pillar bearing block, respectively establish an extension spring in the both sides of guide pillar.

2, according to the described traverse slotter of claim 1 milling head, it is characterized in that using in the bearing block ball cover on the jacket wall of a circle cover, establishing evenly distributed some through holes, ball of panel in each hole, its ball diameter is greater than wall thickness, and the center of ball should with the central lines of wall thickness.