CN207026533U - A kind of brake-shoe special boring mill - Google Patents

Abstract

The utility model discloses a kind of brake-shoe special boring mill, including lathe bed, the main shaft pedestal and the workbench to clamping workpiece being arranged on lathe bed, two main shafts are abreast provided with the main shaft pedestal, the main shaft be provided with can clamping boring cutter clamping head, clamping head on two main shafts is associated with a distance regulating mechanism, the workbench is provided with can be along a left side, the axial movement slide carriage of the axial movement of right main shaft, the distance regulating mechanism includes the radial rotating support being rotatably arranged on main shaft, two clamping heads are separately positioned on corresponding radial rotating support, two counter-rotational link gears of radial rotating support can be driven by being provided between two radial rotating supports, clamping has positioning cylinder on the clamping head of left and right two.The utility model can both significantly increase the production efficiency of brake-shoe bore hole, while be advantageous to improve the dimensional accuracy of brake-shoe bore hole, scrapping when reducing brake-shoe processing.

Description

A kind of brake-shoe special boring mill

Technical field

Boring machine technical field is the utility model is related to, more particularly, to a kind of brake-shoe suitable for drum type braking device The brake-shoe special boring mill of bore hole.

Background technology

Existing brake device for car mainly has two kinds of a disc type brake and drum brake, and wherein disc type brake includes and wheel The discoidal corresponding braking clamp of brake block one-level that is fixed and rotating at the same speed, brake callipers are promoted to clamp with oil pressure during brake Brake block is to produce frictional force, so as to control the rotation of wheel to reach the brake slowed down and braked.And drum brakes includes one Brake rim and the brake-shoe that is arranged on brake rim in of the shape similar to tambourine（Brake block）, brake drum fixes and synchronized with wheel Rotate.Brake-shoe when brake（Brake block）It is flared out, the inner side of friction brake drum, so as to reach what is slowed down and brake Purpose.Compared to disc type brake, the advantages of drum brake has that rate of wear is low, and holistic cost is relatively low.

For example, one kind disclosed " new automobile drum type braking device ", its notification number in Chinese patent literature are CN206265014U, including the braking cavity being made up of brake drum and back-plate, brake empty intracavitary are equipped with automotive drum type braking Piece, automotive drum type braking device also include drive device, and drive device includes brake pedal, is connected with turn and pushes away on brake pedal Bar, master cylinder piston, master cylinder, oil pipe and wheel cylinder, wheel cylinder are built-in with wheelcylinder piston, wheelcylinder piston both ends and automobile Drum-type brake pad is connected, and wheel cylinder is arranged on brake empty intracavitary.The technical scheme uses non-uniform thickness friction plate so that its energy Larger pressure is enough born, changes the conduction of vibrations, significantly improves noise during automotive drum type braking device braking.

Brake-shoe substantially semicircular in shape, it is respectively necessary for processing a circular hole in the openend of the left and right of brake-shoe two, existing Have in technology, people first cast out two preformed holes typically by the mode of casting, then pre- to two by way of bore hole Box out and carry out secondary operation, to obtain having the circular hole of higher position precision and dimensional accuracy, while it is higher to have circular hole Surface smoothness.Existing boring machine generally includes a workbench for being used for clamping workpiece, and one clamping and can drive cutter Main shaft, however, the processing mode of existing brake-shoe circular hole has following defect：Two circular holes in left and right need points two on brake-shoe Secondary bore hole could be completed to process, and correspondingly workpiece needs secondary clamping, not only make the efficiency of whole brake-shoe bore hole reduce, simultaneously Dimensional accuracy between the circular hole of left and right two is also difficult to ensure that.Although also there is the workbench of boring machine horizontally moveable, for example, in It is disclosed " a kind of Novel horizontal boring machine " on state's patent document, including lathe bed, tailstock, rear column, workbench, lower slide carriage, on slip Plate, boring axle, floral disc, front column, boring head frame and cradle, described lathe bed one end is provided with tailstock and the rear column runs through tailstock Inside is fixedly connected with lathe bed, and the side surface of lathe bed one is fixed with workbench, the workbench bottom end surface and upper slide carriage It is in close contact, and the upper slide carriage bottom is provided with lower slide carriage, and the workbench side is provided with boring axle, boring axle one end insertion Inside floral disc.The boring machine is compact-sized, by the static clamping of workpiece on work top, makees feed motion by system of processing, solves Workpiece need to lift twice, clamping, big correction and product concentricity trueness error the problems such as, operating efficiency is high, reduces simultaneously Cost, product quality is ensure that, there is good economic benefit and social benefit, suitably promote the use of.But such boring machine exists When processing two circular holes in left and right of brake-shoe, it is still desirable to which bore hole in two times, the efficiency of its bore hole are difficult to improve, secondly, when adding During the complete circular hole of work, it is necessary to by movable workbench and the position of adjustment workpiece, to process another circular hole, now, two Centre-to-centre spacing between individual circular hole can only lean on the displacement shown by workbench to ensure, by boring table mobile accuracy and The limitation of corresponding display precision, it is difficult to ensure the precision of the centre-to-centre spacing of two circular holes of brake-shoe or so, and existing measurement Instrument and measuring method are also difficult to the displacement that workpiece is accurately measured before second circular hole is processed, and people are typically only capable to Process a brake-shoe, and to workbench after the centre-to-centre spacing of two circular holes in left and right measures on the brake-shoe to processing Displacement carry out adjustment, it is not only wasted time and energy, and the waste of workpiece can also can be also caused in adjustment.

Utility model content

The purpose of this utility model is to be deposited to solve existing boring machine when processing two circular holes in left and right of brake-shoe Processing efficiency it is low, dimensional accuracy of pitch of holes is difficult to ensure that the problem of, there is provided a kind of brake-shoe special boring mill, both can be notable Ground improves the production efficiency of brake-shoe bore hole, while is advantageous to improve the dimensional accuracy of brake-shoe bore hole, reduces brake-shoe processing When scrap.

To achieve these goals, the utility model uses following technical scheme：A kind of brake-shoe special boring mill, including bed Body, the main shaft pedestal and the workbench to clamping workpiece being arranged on lathe bed, two are abreast provided with the main shaft pedestal Individual main shaft, is provided with the spindle drive to drive shaft in main shaft pedestal, the main shaft be provided with can clamping boring cutter dress Chuck, the clamping head on two main shafts is associated with a distance regulating mechanism, and the workbench is provided with can be along the axle of main shaft To mobile axial movement slide carriage, the spindle drive in the axial movement slide carriage and main shaft pedestal is associated.

As a kind of special boring mill of brake-shoe, the utility model sets two main shafts on lathe bed, so as to simultaneously right The brake-shoe of clamping on the table carries out Boring, significantly increases production efficiency.The utility model makes on two main shafts Clamping head it is associated with a distance regulating mechanism, so as on the premise of main shaft is not moved conveniently adjusted two clamping heads The distance between, to adapt to the processing of the brake-shoe of different size, while be advantageous to simplify structure and the control of main shaft.Need Bright, we can distinguish the cylinder that clamping is used to position on two clamping heads, so as to convenient accurately two clamping heads of measurement Between centre-to-centre spacing, be advantageous to improve two circular hole spacing of brake-shoe dimensional accuracy.When main shaft drives boring cutter to rotate, you can Drive axial movement slide carriage to move axially by spindle drive, workpiece is done axial feed motion with respect to boring cutter.

Preferably, the distance regulating mechanism includes being rotatably arranged in radial rotating support on main shaft, two Clamping head is separately positioned on corresponding radial rotating support, and two radial directions can be driven by being provided between two radial rotating supports The counter-rotational link gear of swinging mounting, clamping has positioning cylinder on the clamping head of left and right two.

When we make two radial rotating supports rotate in a reverse direction by link gear, two radial directions are arranged on Clamping head on swinging mounting can be relatively close or left, so as to the spacing being conveniently adjusted between two clamping heads, so as to Make the utility model adapt to different model, specification brake-shoe Boring.

Preferably, the radial rotating support includes the gear ring being set on main shaft, the link gear includes and it In radial rotating support the adjustment gear of gear ring engagement and the transition gear of adjustment gear engagement, the transition gear It is meshed with the gear ring of another radial rotating support.

When we rotate adjustment gear, you can drive one angle of a ring gear against rotation engaged, and passed through Crossing gear drives another gear ring to rotate an identical angle with opposite rotation direction, so as to adjust between two clamping heads Spacing, and two clamping heads is remained in same level.

Preferably, the link gear also includes a regulation worm screw, the worm gear being arranged on the gear shaft of adjustment gear, The regulation worm and wheel engagement, the regulation worm screw are provided with rotational handle.

When we rotate rotational handle manually, you can by adjusting worm drive worm gear wheel, and then drive regulation tooth Wheel rotates, to adjust the spacing between two clamping heads.Because worm and gear has good self-locking action, therefore, it can be ensured that Regulate the reliable location between two clamping heads of spacing.In addition, worm and gear has larger gearratio, therefore be advantageous to Laborsaving and accurate control during manual adjustment clamping head spacing.

Preferably, the main shaft is provided with driving gear, the clamping head is provided with what is engaged with the driving gear Driven gear.

So, when the shaft rotates, you can driving clamping head rotates, and then drives turning for boring cutter of the clamping on clamping head It is dynamic, to complete Boring.

Preferably, being provided with lockable mechanism between two radial rotating supports, the lockable mechanism includes being hinged on it In left regulation cross bar on a radial rotating support, the right regulation cross bar that is hinged on another radial rotating support, it is described The end of left regulation cross bar is provided with sliding eye, and the end adapter of the right regulation cross bar is in the sliding eye, in sliding eye Provided with the preloading spring for compressing right regulation crossbar end, it is uniform in a circumferential direction to be provided with 3-4 bars in the end face of left regulation cross bar The slot segmentation for being distributed and axially extending, the circumference side of left regulation crossbar end is circular conical surface, in left regulation cross bar close to end The circumference side of portion's circular conical surface is provided with external screw thread, and left regulation crossbar end is provided with the locking swivel nut being threadedly coupled with external screw thread, The madial wall of the locking swivel nut is provided with and the extruding conical surface of circular conical surface fitting.

When our positively rotation lock swivel nuts, you can the circular cone of left regulation crossbar end is extruded by extruding the conical surface Face, so that the circular conical surface of left regulation cross bar forms the active force of a radial direction.Due to being provided with 3-4 in the end face of left regulation cross bar The slot segmentation that bar is uniformly distributed and axially extended in a circumferential direction, therefore, the end of left regulation cross bar are divided groove and separated The segmentation block tile-shaped into 3-4 blocks, the right regulation cross bar that can be held snugly against by the segmentation block after radial compression in sliding eye, So as to realize the locking between left and right regulation cross bar, and then the rotational angle of two radial rotating supports of locking by frictional force. When we rotate backward locking swivel nut, you can the extruding conical surface and the circular conical surface of left regulation crossbar end are separated, a left side now, It can relatively move axially between right regulation cross bar and change the rotational angle of two radial rotating supports, and then adjust two Centre-to-centre spacing between clamping head.Due to being provided with preloading spring in sliding eye, so as to produce a left and right regulation cross bar of driving The active force being separated from each other, and then the fit clearance between each gear of link gear can be eliminated, it is ensured that two radial rotating branch The synchronous backward of frame rotates, and then the position of center line of two clamping heads is kept constant.

Therefore, the utility model has the advantages that：Both the production efficiency of brake-shoe bore hole can have been significantly increased, together When be advantageous to improve brake-shoe bore hole dimensional accuracy, reduce brake-shoe processing when scrapping.

Brief description of the drawings

Fig. 1 is a kind of structural representation of the present utility model.

Fig. 2 is the structural representation of distance regulating mechanism.

Fig. 3 is the structural representation of lockable mechanism.

In figure：1st, lathe bed 2, main shaft pedestal 21, main shaft 211, clamping be first 212, positioning cylinder 22, driving tooth Wheel 23, driven gear 3, workbench 4, radial rotating support 41, gear ring 42, left regulation cross bar 421, sliding eye 422nd, slot segmentation 43, right regulation cross bar 44, locking swivel nut 441, the extruding conical surface 5, adjustment gear 51, transition gear 52nd, worm screw 53, turbine 54, rotational handle 6, brake-shoe are adjusted.

Embodiment

The utility model is further described with embodiment below in conjunction with the accompanying drawings.

As shown in figure 1, a kind of brake-shoe special boring mill, it is applied to the bore hole of semicircular brake-shoe or so two circular holes Processing, specifically includes lathe bed 1, and main shaft pedestal 2 is set in lathe bed side, and clamping brake-shoe to be processed is set in lathe bed opposite side 6 workbench 3, the main shaft 21 of two lateral arrangements is abreast set, so as to form a kind of horizontal boring machine on main shaft pedestal.When So, needed in main shaft pedestal set can drive shaft rotate spindle drive.Can clamping boring in addition, being set on main shaft The clamping first 211 of knife, setting on the table can be along the axial movement slide carriage of the axial movement of main shaft and to by brake-shoe Clamping moves axially the clamp system on slide carriage, and moves axially slide carriage and spindle drive and be associated.It is main during bore hole Axle drive mechanism drive shaft rotates, and main shaft then drives boring cutter to rotate by clamping head, and spindle drive drives simultaneously and it Associated axial movement slide carriage axial movement, and then drive brake-shoe to do axial feed motion, to realize the boring of brake-shoe Hole machined.Because clamping head, the clamp system for moving axially slide carriage, spindle drive, workpiece etc. belong to showing for horizontal boring machine There is technology, therefore, do not do excessive description in the present embodiment.

In addition, a distance regulating mechanism associated with the clamping head on two main shafts can be set in we, so as to not The distance between conveniently adjusted two clamping heads on the premise of mobile main shaft, to adapt to the processing of the brake-shoe of different size. Specifically, as shown in Fig. 2 distance regulating mechanism includes two radial rotating supports 4, one end of radial rotating support, which is set, to be had The gear ring 41 of external tooth, the gear ring of two radial rotating supports is socketed on two main shafts respectively, and two clamping heads are then set respectively Put in the end of corresponding radial rotating support.

In order to ensure two radial rotating supports in a reverse direction, identical rotational speed, we can be in two radial directions One link gear is set between swinging mounting, and the link gear includes what is engaged with the gear ring of one of radial rotating support Adjustment gear 5 and the transition gear 51 of adjustment gear engagement, transition gear are mutually nibbled with the gear ring of another radial rotating support Close.So, when we rotate adjustment gear, one angle of a ring gear against rotation engaged, the opposing party are on the one hand driven Face drives another gear ring to rotate an identical angle with opposite rotation direction by transition gear, so that two radial directions Swinging mounting rotates identical angle in a reverse direction, both can adjust the spacing between two clamping heads, can make two dresses again Chuck is remained in same level, and the position of center line between two clamping heads keeps constant, so as to be advantageous to Clamping different model on the table, the brake-shoe of specification and two clamping heads keep centerings.

Certainly, as shown in figure 1, we can distinguish Set and Positioning cylinder 212 on the clamping head of left and right two, measurement two is passed through The outside spacing and inner side spacing of individual positioning cylinder, you can the centre-to-centre spacing of clamping head is readily obtained, accurately to adjust dress The centre-to-centre spacing of chuck, so as to meet the requirement of the size of the brake-shoe of processing different model and specification.

In order to facilitate regulation, link gear may also include a regulation worm screw 52, be arranged on the gear shaft of adjustment gear Worm gear 53, regulation worm and wheel engagement, rotational handle 54 is set on regulation worm screw.Turn manually when we hold rotational handle During dynamic regulation worm screw, you can driving worm gear wheel, and then drive adjustment gear to rotate, between adjusting between two clamping heads Away from.Because worm and gear has larger gearratio, therefore laborsaving and accurate control when being advantageous to manual adjustment clamping head spacing System, and good self-locking can be realized.

It should be noted that we can set driving gear 22 on main shaft, set on clamping head clamping head and active The driven gear 23 of gear engagement.When the shaft rotates, you can drive clamping head to rotate by driving gear, driven gear, enter And the rotation of boring cutter of the clamping on clamping head is driven, to complete Boring.That is, the utility model is in regulation two During the spacing of clamping head, the fixation of two main shafts can be kept, so as to be advantageous to simplify the structure of main shaft and control.It is and to be processed Brake-shoe clamping is moved axially on slide carriage, and relative main moves horizontally, to complete the Boring of brake-shoe.

Further, we can also set lockable mechanism between two radial rotating supports, to turn two radial directions Position between dynamic support keeps fixing.As shown in figure 3, lockable mechanism includes being hinged on one of radial rotating support Left regulation cross bar 42, the right regulation cross bar 43 being hinged on another radial rotating support, the end set edge of left regulation cross bar The sliding eye 421 extended axially inwardly, the end adapter of right regulation cross bar is in the sliding eye of left regulation cross bar.In addition, in cunning A preloading spring 43 is set in dynamic hole, preloading spring one end compresses right regulation crossbar end, and the other end compresses the bottom of sliding eye Portion.In addition, chamfering is set at the edge of left regulation cross bar end face, so that the circumference side of left regulation crossbar end turns into circular cone Face, and 4 slot segmentations 422 for being uniformly distributed and axially extending in a circumferential direction are set in the end face of left regulation cross bar, from And there is the end of circular conical surface to be separated into 4 pieces of tile-shaped segmentation blocks left regulation cross bar.Also, it would be desirable to horizontal in left regulation Bar sets external screw thread on the circumference side of end circular conical surface, and sets a locking swivel nut 44 in left regulation crossbar end, Locking swivel nut one end is open-minded, and the other end sets the through hole being adapted to right regulation cross bar, and the madial wall of one end is opened in locking swivel nut Upper setting internal thread, and the madial wall close to through hole one end then sets the circular conical surface taper identical with left regulation crossbar end to squeeze The conical surface 441 is pressed, so that locking swivel nut is threadedly coupled with the external screw thread of left regulation crossbar end.

When our positively rotation lock swivel nuts, axial movement of the locking swivel nut along left regulation cross bar, now lock The circular conical surface of the left regulation crossbar end of extruding conical surface fitting in swivel nut.When we are rotated further locking swivel nut, the conical surface is extruded The circular conical surface of i.e. extrudable left regulation crossbar end, so that active force of the circular conical surface of left regulation cross bar by a radial direction, The segmentation block that the divided groove in end of left regulation cross bar separates can be held snugly against after by radial compression is plugged on slip Right regulation cross bar in hole, so as to realize the locking between left and right regulation cross bar by frictional force, and then two radial directions of locking turn The rotational angle of dynamic support.When we rotate backward locking swivel nut, you can make the extruding conical surface and the circle of left regulation crossbar end The conical surface separates, and can relatively be moved axially between left and right regulation cross bar now, we can be adjusted by spacing as previously mentioned The rotational angle that mechanism changes two radial rotating supports is saved, and then adjusts the centre-to-centre spacing between two clamping heads.Due in cunning Preloading spring is provided with dynamic hole, so as to produce the active force that the left and right regulation cross bar of a driving is separated from each other, and then can be eliminated Fit clearance between each gear of link gear, it is ensured that the synchronous backward of two radial rotating supports rotates, and makes two clampings The position of center line of head keeps constant.

Claims (6)

1. a kind of brake-shoe special boring mill, including lathe bed, the main shaft pedestal being arranged on lathe bed and the work to clamping workpiece Make platform, it is characterized in that, two main shafts are abreast provided with the main shaft pedestal, the master to drive shaft is provided with main shaft pedestal Axle drive mechanism, the main shaft be provided with can clamping boring cutter clamping head, clamping head and a spacing regulation on two main shafts Mechanism is associated, and the workbench is provided with can be along the axial movement slide carriage of the axial movement of main shaft, the axial movement slide carriage It is associated with the spindle drive in main shaft pedestal.

2. a kind of brake-shoe special boring mill according to claim 1, it is characterized in that, the distance regulating mechanism includes turning The radial rotating support being arranged on dynamicly on main shaft, two clamping heads are separately positioned on corresponding radial rotating support, two Two counter-rotational link gears of radial rotating support, the clamping head of left and right two can be driven by being provided between individual radial rotating support Upper clamping has positioning cylinder.

3. a kind of brake-shoe special boring mill according to claim 2, it is characterized in that, the radial rotating support includes being arranged Gear ring on main shaft, the link gear include and one of radial rotating support gear ring engage adjustment gear and The gear ring of the transition gear of adjustment gear engagement, the transition gear and another radial rotating support is meshed.

4. a kind of brake-shoe special boring mill according to claim 3, it is characterized in that, the link gear also includes a regulation Worm screw, the worm gear being arranged on the gear shaft of adjustment gear, the regulation worm and wheel engagement, the regulation worm screw are provided with Rotational handle.

5. a kind of brake-shoe special boring mill according to claim 1 or 2 or 3 or 4, it is characterized in that, the main shaft is provided with Driving gear, the clamping head are provided with the driven gear engaged with the driving gear.

6. a kind of brake-shoe special boring mill according to Claims 2 or 3 or 4, it is characterized in that, in two radial rotating supports Between be provided with lockable mechanism, the lockable mechanism includes left regulation cross bar, the hinge being hinged on one of radial rotating support The right regulation cross bar being connected on another radial rotating support, the end of the left regulation cross bar are provided with sliding eye, the right tune The end adapter of cross bar is saved in the sliding eye, the preloading spring for compressing right regulation crossbar end is provided with sliding eye, The end face of left regulation cross bar is provided with the slot segmentation that 3-4 bars are uniformly distributed and axially extended in a circumferential direction, left regulation cross bar The circumference side of end is circular conical surface, and external screw thread, left tune are provided with circumference side of the left regulation cross bar close to end circular conical surface Section crossbar end is provided with the locking swivel nut being threadedly coupled with external screw thread, and the madial wall of the locking swivel nut is provided with and circular conical surface fitting The extruding conical surface.