CN2273638Y

CN2273638Y - Machine for grinding cylindrical surface of carbin rod

Info

Publication number: CN2273638Y
Application number: CN 96204458
Authority: CN
Inventors: 袁克俭
Original assignee: YUAN KIJIANG
Current assignee: YUAN KIJIANG
Priority date: 1996-02-14
Filing date: 1996-02-14
Publication date: 1998-02-04
Anticipated expiration: 2006-02-14

Abstract

The utility model relates to a machine for the grinding cylindrical surface of a carbon rod. The machine for the grinding cylindrical surface of a carbon rod is composed of a bed body, a motor, a guiding wheel rack, a guiding wheel, a grinding wheel rack, a grinding wheel, a support plate, a guiding rail, a screw rod, a feed plate and a support knife. A rolling cone bearing is adopted on a sleeve type guiding wheel shaft of the guiding wheel rack. A back-to-back angular contact bearing is adopted on a sleeve type grinding wheel shaft of the grinding wheel rack. The rolling cone bearing and the back-to-back angular contact bearing are respectively sealed and pressed by pressing covers. The guiding wheel is revolved within a vertical plane. The guiding wheel moves in an annular groove with a guiding wheel center on the guiding wheel shaft as a circle center for adjustment through screws on the guiding wheel rack. The utility model has the advantages of simple structure, convenient adjustment and return, high precision of processing, long service life, etc. The processing size precision of the carbon rod can reach 0.015 mm or so. The output speed for carbon rod bar can reach 11 pieces per second. The service life of the bearing can reach two years. The grinding wheel rack can be utilized for 10-15 years.

Description

The carbon-point outer circular end grinding machine

The utility model belongs to the process equipment to the outer garden of carbon-point face.

At present, the outer garden of the carbon-point that each carbon element producer uses face processing equipment, what its abrasive grinding wheel frame and wheel frame adopted all is the integral bearing shelf structure, this structure axiality is poor, and machining accuracy is low, and the carbon-point diameter tolerance that processes is ± 0.04MM, because the bearing in the bearing bracket stand is sealing not, cause dust, foul etc. are entered easily, refuel also inconvenient, bearing is worn and torn easily, damage, only have 1 month average life, and, after changing several times bearing, it is big that the aperture of bearing bracket stand becomes, and causes whole frame body to be scrapped, and causes waste; In addition, the helical pitch centre of gyration of wheel frame is in the guideway centreline of wheel frame, if adjust lead angle, thereby the formed zone of that guide wheel and abrasive grinding wheel will change and influence the crudy of carbon-point, and adjustment is inconvenience also.

The purpose of this utility model will provide a kind of simple in structure exactly, and it is convenient to adjust the backhaul angle, machining accuracy height, the carbon-point outer circular end grinding machine of long service life.

The utility model mainly is that the internal structure of grinding carriage and wheel frame is improved, and the structure of adjusting the backhaul angle provided one than novel scheme, what adopt on the wheel frame inner sleeve formula guide wheel shaft is two taper roller bearings, gland by the band sealing ring compresses, its tightness is adjusted by the thickness of adjusting pad, because the rotating speed of guide wheel is low, has only 252～315 rev/mins, caloric value is little, so the sealing of rubber seal loop contacts is adopted in its sealing; What adopt on the abrasive grinding wheel frame inner sleeve formula grinding wheel spindle is two diagonal angle contact ball bearings, for back-to-back formula is placed, spacer has certain height poor, inner spacing collar is lower than outer separator, adjusts the tight degree of giving of bearing with a nut respectively, eliminates its play, guarantee the running accuracy and the stiffness of grinding wheel spindle, its adopts axial location slightly to give tightly, makes outer gland and bearing outer ring end face that the gap of 0.01～0.03mm be arranged, in case two side bearing off-loads.The nut at two ends is formed sealing ring again with lid, can prevent that dust or foul from entering in the bearing, prolong the service life of living bearing, bearing lubricated is that the axis hole by the axle two ends carries out, because the rotating speed height of emery wheel, it is 2600 rev/mins, like this, caloric value is also big, so, what it adopted is non-contact pins, avris at the wheel frame planker, be fixed with a L-square, on drive four cannelures, they are that the garden heart is offered with guide wheel shaft upper block center, when guide wheel when vertical plane turns round, the guider screw that is contained on the wheel frame moves in cannelure, forwarding required angle to can be fastening, make the formed grinding area of guide wheel and abrasive grinding wheel constant, the angle of revolution can be adjusted in 0 °～8 ° scopes in its vertical plane, abrasive grinding wheel frame and wheel frame all are positioned on the guide rail above the grinding machine, adjust distance between emery wheel and the guide wheel by the screw mandrel at two ends respectively, to adapt to the carbon-point of different-diameter, their top all is welded with a surface plate that has four holes, be used for laying truer, motor directly drives abrasive grinding wheel and rotates, and pass through another belt pulley and transmit power for respectively guide wheel and feed table, opening part on the feed table has a holder cutter, carbon-point is transported between emery wheel and the guide wheel from feed table processes, and the carbon-point diameter of processing is 3～8mm.

Adopt sealed bearing in the utility model in abrasive grinding wheel frame and the wheel frame, by the cannelure on the L-square, in vertical plane, adjust the angle of revolution of guide wheel, the accurate to dimension of carbon-point is reached ± 0.015mm, surface roughness reaches more than 3.2 microns, go out 11/second of carbon-point bar speed, bearing life can reach 2 years, and the emery wheel support body can be with 10～15 years.

Fig. 1 is a left view of the present utility model;

Fig. 2 is the utility model rearview and as Figure of abstract;

Fig. 3 is the structural representation of the utility model abrasive grinding wheel frame;

Fig. 4 is the structural representation of the utility model wheel frame.

As Fig. 1, shown in 2, on bed body 1, grinding carriage 3 is by following planker 6 dovetail grooves, be fixed on the guide rail 4, the L-square 11 of wheel frame 2 by being fixed as one with planker 5, also be fixed on the guide rail 4

rotary screw rod

7,8, can drive respectively and advise

planker

5,6 move, to adjust the distance between guide wheel 9 and the emery wheel 10, the diameter that adapts to the carbon-point of processing is fixed with the L-square 11 of wheel frame 2, and having four above is the cannelure 12 of the garden heart with the guide wheel shaft, be contained in guider screw on the wheel frame 2 in cannelure when mobile, guide wheel shaft and grinding wheel spindle still are in same plane, and guide wheel 9 is constant with emery wheel 10 formed grinding areas, and just the angle of revolution of guide wheel 9 changes, to adjust the sliver exporting speed of processing carbon-point, motor 13 is fixed on a body 14 fronts, and it one is a drive pulley 14, and emery wheel 10 is rotated; The one, drive pulley 15 drives belt pulley 16, and guide wheel 9 is rotated.The axle of belt pulley 15 passes a body 1 again, and to other end drive pulley 17, belt pulley 17 by a Pulley shaft, drives a pair of bevel gear again, and feed table 18 is rotated, and the carbon-point in the dish is delivered between guide wheel 9 and the emery wheel 10 and processed through holder cutter 19.At the top of wheel frame 2 and grinding carriage 3, be welded with a surface plate 20.21 respectively, all have four holes above, be used for imitating and put dresser.

As shown in Figure 3, a taper roller bearing 22,23 is laid at the two ends in wheel frame 2 upper block shaft sleeves respectively, is compressed by the

gland

26,27 of being with sealing ring, adjusts the

trimmer

24,25 of its tightness, between them.Guide wheel shaft 28 runs through two

bearings

22,23 and guide wheel 9, is driven by belt pulley 16.

As shown in Figure 4, two ends on grinding carriage 3 in the grinding wheel spindle sleeve, back-to-backly respectively be equipped with a pair of angular contact ball bearing 30,31,32,33, inner spacing collar 35,36 is lower than

outer separator

34,37, and the

nut

40,41 of outer end and gland 38,39 are formed sealing ring, and bearing seal is lived, the two ends of grinding wheel spindle 29 axially are drilled with a hole respectively, with offer on the shaft sleeve two on tank filler sleeve A, B communicate, boring A, B lay respectively between the two bearings, and be oily with the convenient bearing of giving.

Claims

1, carbon-point outer circular end grinding machine, form by bed body, motor, belt pulley, wheel frame, guide wheel, grinding carriage, emery wheel, planker, guide rail, screw mandrel, feed table, holder cutter, it is characterized in that: two ends in the guide wheel shaft sleeve of wheel frame (2), be equipped with taper roller bearing (22,23) respectively, wheel frame (2) is fixed on the L-square (11), two ends in the grinding wheel spindle sleeve of grinding carriage (3) back-to-back are equipped with a pair of angular contact bearing (30,31,32,33) respectively.

2, according to the said carbon-point outer circular end grinding machine of claim 1, it is characterized in that: bearing (22,23) two ends use trimmer (24,25) and gland (26,27) to compress sealing respectively.

3, according to the said carbon-point outer circular end grinding machine of claim 1, it is characterized in that: the two ends of two pairs of bearings (30,31,32,33) use gland (38,39) and nut (40,41) to compress sealing respectively.

4, according to the said carbon-point outer circular end grinding machine of claim 3, it is characterized in that: the grinding wheel spindle (29) of two pairs of bearings (30,31,32,33) usefulness, two ends axially are drilled with two tank filler sleeve A, B offering on hole and the grinding wheel spindle sleeve respectively and communicate,

5, according to the said carbon-point outer circular end grinding machine of claim 1, it is characterized in that: having four on the L-square (11) is the cannelure (12) of the garden heart with guide wheel shaft (28) upper block (9) center.