CN201211570Y

CN201211570Y - Continuous speed regulation feed apparatus

Info

Publication number: CN201211570Y
Application number: CNU2008200136853U
Authority: CN
Inventors: 王波; 赵春杰; 柴海林; 刘昆; 马宁
Original assignee: Bohai Shipbuilding Heavy Industry Co Ltd
Current assignee: Bohai Shipyard Group Co Ltd
Priority date: 2008-06-27
Filing date: 2008-06-27
Publication date: 2009-03-25
Anticipated expiration: 2018-06-27

Abstract

The utility model provides a stepless speed regulation feed apparatus, which consists of a cam mechanism and a feed mechanism. The feed mechanism has a structure that a rocker arm is arranged in a shell; the shell is fixed on a mandrel; the rocker arm is supported on the mandrel by a bearing; an upper rocker is in threaded connection with the rocker arm; the lower end of the upper rocker is in threaded connection with a lower rocker and a roller bracket in turn; a roller is arranged on the roller bracket; a screw rod transition shaft is inserted in the mandrel; and a feed clutch is arranged on the screw rod transition shaft. The cam mechanism has a structure that a cam bush is assembled with a cam and a cam shaft respectively. The feed mechanism is fixedly connected with a screw rod gland through the shell thereof; the screw rod transition shaft is connected with a screw rod; and the cam mechanism is in threaded connection with a boring bar through the cam shaft passing through the screw rod gland. The roller on the feed mechanism falls into a groove on the outer edge of the cam of the cam mechanism, and the feed mechanism moves along an outer contour line of the cam mechanism, so as to realize stepless speed regulation feed movement. The feed apparatus has the advantages of reducing the frequency of grinding tools, lowering production cost and improving work efficiency by more than one time.

Description

Stepless speed regulated feeding apparatus

Technical field

The utility model relates to the boring processing equipment, particularly relates to the stepless speed regulated feeding apparatus of large-scale boring machinery.

Background technology

Present large-scale bore hole equipment, when the processing endoporus is to drive feed screw by the planetary system geared machine, the realization feed motion thereby drive boring head and cutter holder are back and forth walked, the gear-driven drawback of single group is that the amount of feeding is non-adjustable, in order to reach the adjustable purpose of the amount of feeding, must be equipped with the gear that the multiple sets of teeth number do not wait and adjust the amount of feeding.Stern tube shaft pipe, rudder are that axis hole all has very big allowance in the shipbuilding process, processing work is quite heavy, the scene adds the upper slitter amount that determines cutting depth man-hour and adopts range estimation to judge, so the upper slitter amount is uneven when using double-pole, influence the precision of machining, but also the sharpening number of times of increase cutter, bore hole efficient is not high.

Summary of the invention

The technical problems to be solved in the utility model, shipbuilding stern tube shaft pipe, rudder were the nonadjustable difficult problem of tool feeding amount in the bore hole process of axis hole in the past to provide a kind of solution, keep continuous feed, reduce the tool sharpening number of times, improve the stepless speed regulated feeding apparatus of bore hole efficient.

The technical scheme that adopts is:

Stepless speed regulated feeding apparatus is made up of cam mechanism and feed mechanism two parts.Described feed mechanism comprises housing, rocking arm, mandrel, leading screw transition axis, goes up rocking bar, following rocking bar, roller, feeding clutch and back-moving spring.The described rocking arm housing of packing into, subsequently side cover is fixed on the housing, its middle shell is fixed on the mandrel; rocking arm by bearings on mandrel, the last rocking bar described rocking arm that is threaded, and set dust cap and last rocking bar are locked on the rocking arm; go up the rocking bar lower end rocking bar that is threaded down; following rocking bar lower end screw thread is connected with rolling wheel support, and roller is contained on the rolling wheel support, and the back-moving spring two ends of rocking arm are separately fixed on housing and the rocking arm with nut and lock-screw.The leading screw transition axis is installed in the mandrel, and feeding clutch is sleeved on the leading screw transition axis, and feeding clutch can be slided on the leading screw transition axis, feeding clutch and mandrel can be interlocked mutually during cutting, and be screwed, and constitutes feed mechanism.Described cam mechanism comprises cam, camshaft, cam lining and fixed bar.The outer rim of cam is provided with groove, the assembling of cam lining cylindrical and cam, and circle and camshaft assembling in the cam lining, an end of camshaft is installed with round nut, and fastening with locking nut, an end of the fixed bar formation cam mechanism that is threaded with cam.Feed mechanism is fixedlyed connected with boring machine leading screw gland with its housing, and its leading screw transition axis is connected with the boring machine leading screw, and cam mechanism passes boring machine leading screw gland with camshaft and is threaded with boring bar, and distinguishes lock tab wheel shafts and cam with two locking nuts.Roller on the described feed mechanism falls within the groove on the cam outer rim of cam mechanism, and feed mechanism is moved along the outer contour of cam mechanism, constitutes stepless speed regulated feeding apparatus.

The housing of above-mentioned feed mechanism is provided with the adjustment screw of control rocking arm amplitude of fluctuation, and adjustment screw screws in housing, and adjustment screw outer casing spring, spring are replaced in the housing outside.

The good effect that the utility model is obtained is:

The utility model can be realized stepless speed regulation, any one value that promptly can speed governing to 0-2mm, and then satisfy the specific (special) requirements of boring processing.Be applied in screw shaft of ship, rudder is the tool feeding of bore hole, the then increase that the rotating speed of the cutting depth of cutter and boring bar can be an amount of, the amount of feeding reduces, can reduce heat in metal cutting and cutting force like this, prolong the service life of cutter, reduce the sharpening number of times of cutter, not only greatly reduce processing cost, also improved machining accuracy simultaneously.This device is used in the 174000T bulk freighter and two kinds of serial ship profile shafts of 46000T oil tanker are that bore hole efficient is enhanced about more than once.

Description of drawings

Fig. 1 is a schematic appearance of the present utility model.

Fig. 2 is a structural representation of the present utility model.

Fig. 3 is the A-A view of Fig. 1.

Fig. 4 is the I place zoomed-in view of Fig. 1.

Fig. 5 is the schematic diagram of installing and using of the present utility model.

Fig. 6 is that the K of Fig. 5 is to view.

The specific embodiment

Stepless speed regulated feeding apparatus is made up of cam mechanism 2 and feed mechanism 1 two parts.Described feed mechanism 1 comprises housing 3, rocking arm 16, mandrel 4, leading screw transition axis 19, goes up rocking bar 9, following rocking bar 10, roller 12, feeding clutch 18 and back-moving spring 27.Described rocking arm 16 housing 3 of packing into is fixed on side cover 20 on the housing 3 subsequently, and its middle shell 3 is sleeved on the mandrel 4, by housing 3 two ends Spring Cards 5 fixed positions, prevents left and right sides play on mandrel.Rocking arm 16 is supported on the mandrel 4 by bearing 6, and bearing 6 adopts unidirectional needle bearing, and its unidirectional needle bearing and rocking arm are that interference fit is an integrative-structure, and unidirectional needle bearing plays feeding and non-return effect.The last rocking bar 9 described rocking arm 16 that is threaded, and set dust cap 7 and last rocking bar 9 are locked on the rocking arm 16 with nut 8 and lock-screw 21, the last rocking bar 9 lower ends rocking bar 10 that is threaded down, the length that can adjust rocking bar promptly reaches the purpose of the length of adjusting rocking arm.Following rocking bar 10 lower end screw threads are connected with rolling wheel support 11, and roller 12 is contained on the rolling wheel support 11, and back-moving spring 27 two ends of rocking arm are separately fixed on housing 3 and the rocking arm 16.Do when waving when rocking arm, back-moving spring plays the effect that rocking arm is resetted, and is installed with adjustment screw 25 on the housing 3, the amplitude of fluctuation of its outer casing spring 26 control rocking arms.Leading screw transition axis 19 is installed in the mandrel 4, feeding clutch 18 is sleeved on the leading screw transition axis 19, and feeding clutch 18 can be slided on leading screw transition axis 19, feeding clutch 18 and mandrel 4 can be interlocked mutually during cutting, and fixing with screw 17, constitute feed mechanism.Described cam mechanism 2 comprises cam 13, camshaft 14, cam lining 22 and fixed bar 33.The cylindrical of cam lining 22 and cam 13 assemble movingly, and the interior circle of cam lining 22 and camshaft 14 be assembling movingly also, plays the bearing effect.One end of camshaft 14 is installed with round nut 23, and fastening with locking nut 24, and cam 13 is provided with a hole, and an end of fixed bar 33 is threaded with cam 13, and fixed bar can guarantee that cam does not rotate with boring bar, constitutes cam mechanism.Feed mechanism 1 is fixedlyed connected with boring machine leading screw gland 32 with its housing 3, its leading screw transition axis 19 is connected with boring machine leading screw 31, cam mechanism 2 passes boring machine leading screw gland 32 with camshaft 14 and is threaded with boring bar 30, by revolving the round nut 23 turn power that are added in camshaft one end camshaft is put in place, and, prevent the loosening and cam play of camshaft with two locking nuts, 15 difference lock tab wheel shaft 14 and cams 13.Cam 13 outer rims of described cam mechanism have a shallow slot wideer slightly than the roller 12 of described feed mechanism, and roller 12 falls within the shallow slot of cam 13, is fettered the movement locus of roller.When the outer contour of boring bar 30 drive rollers along cam moves, drive rocking arm 16 swings, the leading screw 31 of stirring feeding rotates, and drives boring head and cutter holder 29 and moves, thereby realize being contained in cutter 28 feed motions on boring head and the cutter holder 29, constitute stepless speed regulated feeding apparatus.

Operation principle:

When boring adds man-hour, feeding clutch 18 and mandrel 4 can be interlocked, and be fixed on the leading screw transition axis 19 with screw 17, make mandrel 4, leading screw transition axis 19 form the one (see figure 2), can reach the purpose of feeding.When needs move quickly into a certain position with boring head and cutter holder 29, feeding clutch 18 and mandrel 4 can be broken away from, shake feeding clutch, thereby drive boring head and cutter holder are done axial fast moving (see figure 5).When roller 12 drives

rocking bars

9,10 when cam 13 outlines move, and then the oscillating motion (see figure 3) about driving rocking arm 16 and doing, drive leading screw 31 one-directional rotation, make boring head and cutter holder 29 produce axial feed motion, cutter 28 carries out the machining (see figure 5).When rocking arm 16 swung to the right-hand member maximum, back-moving spring 27 was moved it to initial position, thereby prepared for feed motion next time.Adjustment screw 25 can be controlled the amplitude of fluctuation of rocking arm, and then can reach the control amount of feeding, can realize stepless speed regulation.In the boring process, sometimes need boring head and cutter holder to do counter motion, to satisfy special process requirements, traditional knife system of walking does not have reverse function, and this device only needs that feed mechanism is pulled down reverse installation just can realize the oppositely purpose of processing of boring head and cutter holder.

Claims

1; Stepless speed regulated feeding apparatus; Formed by cam mechanism (2) and feed mechanism (1) two parts; It is characterized in that described feed mechanism (1); Comprise housing (3); Rocking arm (16); Mandrel (4); Leading screw transition axis (19); Upper rocking bar (9); Lower rocking bar (10); Roller (12); Feeding clutch (18) and back-moving spring (27); Described rocking arm (16) housing (3) of packing into; Subsequently side cover (20) is fixed on the housing (3); Its middle shell (3) is sleeved on the mandrel (4); Rocking arm (16) is supported on the mandrel (4) by bearing (6); Upper rocking bar (9) the described rocking arm (16) that is threaded; And with nut (8) and lock-screw (21) set dust cap (7) and upper rocking bar (9) are locked on the rocking arm (16); Upper rocking bar (9) the lower end lower rocking bar (10) that is threaded; Lower rocking bar (10) lower end screw thread is connected with rolling wheel support (11); Roller (12) is contained on the rolling wheel support (11); The back-moving spring of rocking arm (27) two ends are separately fixed on housing (3) and the rocking arm (16); Leading screw transition axis (19) is installed in the mandrel (4); Feeding clutch (18) is sleeved on the leading screw transition axis (19); Feeding clutch (18) can be slided at leading screw transition axis (19); Feeding clutch (18) and mandrel (4) can be interlocked mutually during cutting; And fixing with screw (17), consist of feed mechanism; Described cam mechanism (2), comprise cam (13), camshaft (14), cam lining (22) and fixed bar (33), cam lining (22) cylindrical and cam (13) assembling, circle and camshaft (14) assembling in the cam lining (22), one end of camshaft (14) is installed with round nut (23), and fastening with locking nut (24), an end of fixed bar (33) is threaded with cam (13), constitutes cam mechanism; Described feed mechanism (1) is fixedlyed connected with boring machine leading screw gland (32) with its housing (3), its leading screw transition axis (19) is connected with boring machine leading screw (31), cam mechanism (2) passes boring machine leading screw gland (32) with camshaft (14) and is threaded with boring bar (30), and with two locking nuts (15) respectively lock tab wheel shaft (14) and cam (13), the roller (12) on the described feed mechanism (1) falls within the groove on cam (13) outer rim of cam mechanism (2).