CN204221614U - Trailing type crankshaft grinding machine with double grinding carriages packaged type CBN dresser - Google Patents

Trailing type crankshaft grinding machine with double grinding carriages packaged type CBN dresser Download PDF

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Publication number
CN204221614U
CN204221614U CN201420508488.4U CN201420508488U CN204221614U CN 204221614 U CN204221614 U CN 204221614U CN 201420508488 U CN201420508488 U CN 201420508488U CN 204221614 U CN204221614 U CN 204221614U
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China
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cbn
diamond roller
connector
grinding
emery wheel
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CN201420508488.4U
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Inventor
卢振洋
穆东辉
范晋伟
刘勇军
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Beijing University of Technology
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Beijing University of Technology
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Abstract

Trailing type crankshaft grinding machine with double grinding carriages packaged type CBN dresser, diamond roller is arranged on electro spindle one end; Electro spindle to be arranged in box body hole and to be fixed by screws on casing; Casing is fixed by screws in connector top, is provided with slide block bottom connector, and the connector that slide block is housed can linearly move by guide rail, and line slideway screw is connected with base; Oil cylinder is fixed by screws on base, and the piston in oil cylinder is connected with casing by contiguous block; Described rolling bearing is arranged in the chute of spring and pressing handle; The direction of motion of one end of described base linearly guide rail is provided with limited block.This device has compact conformation, and motion is simple, and good rigidly, revises the features such as steady.The machining accuracy of bent axle can be ensured, improve the production efficiency of trailing type crankshaft grinding machine with double grinding carriages, be applicable to the high accuracy of automobile crane, at a high speed, high acceleration and deceleration trailing type processing.

Description

Trailing type crankshaft grinding machine with double grinding carriages packaged type CBN dresser
Technical field
The utility model relates to numerically control grinder technical field, is specially a kind of trailing type crankshaft grinding machine with double grinding carriages packaged type CBN dresser.
Background technology
Crankshaft grinding machine is applied CBN emery wheel and carry out the developing direction that large cutting-in high-efficiency grinding has become current crankshaft grinding machine.Require that crankshaft grinding machine all will carry out grinding to the cylindrical of the trunnion of bent axle and connecting rod neck, thrust surface, require that the grinding wheel cylindrical of CBN, end face all will participate in grinding.Mainly there are three problems in the CBN dresser of existing crankshaft grinding machine: 1, the trimmer of crankshaft grinding machine is positioned over frame rear portion end to end more, and when trimming wheel, grinding carriage need retreat and make grinding wheel cylindrical cutting edge touch diamond roller cylindrical finishing sword.When the emery wheel using diameter larger, be satisfied finishing needs, the stroke of grinding carriage feed mechanism (X-axis) must be increased, so not only can reduce lathe efficiency, more can affect the kinematic accuracy of X-axis.During as later stage replacing larger emery wheel, also can there is the situation that emery wheel is interferenceed with trimmer; 2, crankshaft grinding machine is when repairing CBN grinding wheel cylindrical, end face at present, and adopt two cover diamond rollers, shortcoming takies lathe inner space, and the bad control of curve binding site in finishing cross section, cause Grinding defects; 3, crankshaft grinding machine trimmer layout mostly is diamond roller center line and emery wheel centerline parallel or both angles is at present the form of acute angle, the left and right finishing sword of the left and right end face diamond roller of emery wheel is repaired respectively, for ensureing that trimmer has enough trimming wheel left and right, space end faces, when emery wheel is wider, the axle head length of electro spindle must be increased, cause the rigidity of trimmer not enough, therefore when electro spindle runs up, the rotation of axle head drive roller can produce trembles, and affects the dressing accuracy of CBN emery wheel.
Summary of the invention
The purpose of this utility model there are provided a kind of trailing type crankshaft grinding machine with double grinding carriages packaged type CBN dresser, the arrangement achieves micro-precision correction of the flank shape and the dressing of maximum three cutting edges of CBN emery wheel, fundamentally solve emery wheel and trimmer interference problem, optimize inner electric machine structure, improve trimmer rigidity, ensure that dressing accuracy.
For achieving the above object, the technical solution adopted in the utility model is trailing type crankshaft grinding machine with double grinding carriages packaged type CBN dresser, and this device comprises burring machine, hydraulic drive mechanism, buffering micro-adjusting mechanism, position-limit mechanism; Wherein, burring machine comprises casing, connector, diamond roller, electro spindle; Hydraulic drive mechanism comprises slide block, line slideway, oil cylinder, piston, contiguous block; Buffering micro-adjusting mechanism comprises spring, rolling bearing, pressing handle; Position-limit mechanism comprises base, limited block; Wherein the headstock, CBN emery wheel, work supporting block, tailstock, bent axle are the component of crankshaft grinding machine, front finishing sword, side finishing sword are the finishing sword of diamond roller, front finishing sword is arranged on one end of diamond roller in order to repair the outer round surface of CBN emery wheel, side finishing sword is arranged on diamond roller both sides in order to repair the left and right end face of CBN emery wheel, and diamond roller can realize the micro-precision finishing of CBN emery wheel three cutting edges.
Specifically, diamond roller is arranged on electro spindle one end; Electro spindle to be arranged in box body hole and to be fixed by screws on casing; Casing is fixed by screws in connector top, is provided with slide block bottom connector, and the connector that slide block is housed can linearly move by guide rail, and line slideway screw is connected with base; Oil cylinder is fixed by screws on base, and the piston in oil cylinder is connected with casing by contiguous block; Described rolling bearing is arranged in the chute of spring and pressing handle, and the rotation being beneficial to pressing handle regulates; The direction of motion of one end of described base linearly guide rail is provided with limited block, ensures trimmer position zero deflection in finishing CBN emery wheel process.
Described packaged type CBN dresser is arranged on the work top of trailing type crankshaft grinding machine with double grinding carriages, in Grinding Process, trimmer is arranged on noncontact place of limited block and both leave gap, thus avoid and crank up space interference, and trimmer is arranged on the contact position with limited block when trimming wheel.
Compared with prior art, the utility model tool has the following advantages.
1, have employed and trimmer is placed on work top and the structure that can move forward and backward, first fundamentally solve the problem that emery wheel and trimmer are interfered; Secondly, the stroke of two grinding carriage feed mechanisms is decreased in crushing process, greatly reduce the production cost of linear electric motors, hydrostatic slideway, machine shield, ensure that linearity and the sensitivity of grinding carriage feed motion, and then ensure that CBN grinding wheel shape and bent axle shape.
2, have employed large power, electrically main shaft and the direct-connected structure of diamond roller, higher running accuracy can be reached, improve the dressing accuracy of emery wheel, and by changing different electro spindle and diamond roller, multiple finishing rotating ratio can be met, applied widely.
3, the structure of diamond roller meets multiple functional requirement, achieves the micro-precision finishing using a set of trimmer to complete maximum three cutting edges of CBN emery wheel.
4, the utility model has compact conformation, and motion is simple, and good rigidly, revises the features such as steady.The machining accuracy of bent axle can be ensured, improve the production efficiency of trailing type crankshaft grinding machine with double grinding carriages, be applicable to the high accuracy of automobile crane, at a high speed, high acceleration and deceleration trailing type processing.
Accompanying drawing explanation
Fig. 1 trailing type crankshaft grinding machine with double grinding carriages packaged type CBN wheel dresser structure schematic diagram.
Fig. 2 is the left view of trailing type crankshaft grinding machine with double grinding carriages packaged type CBN dresser.
Trimmer schematic diagram when Fig. 3 is crankshaft grinding machine trimming wheel.
Trimmer schematic diagram when Fig. 4 is crankshaft grinding machine grinding work piece.
Fig. 5 .1 is trimmer finishing cylindrical schematic diagram.
Fig. 5 .2 is trimmer finishing left side schematic diagram.
Fig. 5 .3 is trimmer finishing right side schematic diagram.
In figure: 1, casing, 2 connectors, 3, slide block, 4, line slideway, 5, limited block, 6, base, 7, diamond roller, 8, electro spindle, 9, oil cylinder, 10, piston, 11, spring, 12, rolling bearing, 13, contiguous block, 14, pressing handle, 15, the headstock, 16, CBN emery wheel, 17, work supporting block, 18, tailstock, 19, bent axle, 20, front finishing sword, 21, side finishing sword.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
As shown in Fig. 1-5.3, trailing type crankshaft grinding machine with double grinding carriages packaged type CBN dresser, this device comprises burring machine, hydraulic drive mechanism, buffering micro-adjusting mechanism, position-limit mechanism; Wherein, burring machine comprises casing 1, connector 2, diamond roller 7, electro spindle 8; Hydraulic drive mechanism comprises slide block 3, line slideway 4, oil cylinder 9, piston 10, contiguous block 13; Buffering micro-adjusting mechanism comprises spring 11, rolling bearing 12, pressing handle 14; Position-limit mechanism comprises base 6, limited block 5; Wherein the headstock 15, CBN emery wheel 16, work supporting block 17, tailstock 18, bent axle 19 are the component of crankshaft grinding machine, front finishing sword 20, side finishing sword 21 are the finishing sword of diamond roller 7, front finishing sword 20 is arranged on one end of diamond roller 7 in order to repair the outer round surface of CBN emery wheel 16, side finishing sword 21 is arranged on diamond roller 7 both sides in order to repair the left and right end face of CBN emery wheel 16, and diamond roller 7 can realize the micro-precision finishing of CBN emery wheel 16 3 cutting edges.
Specifically, diamond roller 7 is arranged on electro spindle 8 one end; Electro spindle 8 to be arranged in box body hole and to be fixed by screws on casing 1; Casing 1 is fixed by screws in connector 2 top, is provided with slide block 3 bottom connector 2, and the connector 2 that slide block 3 is housed can linearly move by guide rail 4, and line slideway 4 screw is connected with base 6; Oil cylinder 9 is fixed by screws on base 6, and the piston 10 in oil cylinder 9 is connected with casing 1 by contiguous block 13; Described rolling bearing 12 is arranged on spring 11 with in the chute of pressing handle 14, and the rotation being beneficial to pressing handle 14 regulates; The direction of motion of one end of described base 6 linearly guide rail 4 is provided with limited block 5, ensures trimmer position zero deflection in finishing CBN emery wheel 16 process.
Described packaged type CBN dresser is arranged on the work top of trailing type crankshaft grinding machine with double grinding carriages, in Grinding Process, trimmer is arranged on noncontact place of limited block 5 and both leave gap, thus avoid and interfere with bent axle 19 rotary space, and trimmer is arranged on the contact position with limited block 5 when trimming wheel.
Described diamond roller 7 center line and CBN emery wheel 16 central axis.
Described diamond roller 7 adopts high accuracy steel matrix, and front finishing sword 20 and rear finishing sword 21 are sintered by diamond particle and form.
When described buffering micro-adjusting mechanism is the constant propulsion when hydraulic oil in oil cylinder 9, can the size of thrust of regulating spring 11 by rotatably compressing handle 14, ensure trimmer invariant position in the process of trimming wheel; In feeding process, play cushioning effect, after compaction as fixed support try hard to keep card trim locations constant.
Described hydraulic jack 9 is the driving mechanism of this device, its can drive trimmer linearly guide rail 4 move reciprocatingly, realize the switching of machine tool grinding turning work piece and crushing action.
The operation principle of this trailing type crankshaft grinding machine with double grinding carriages packaged type CBN dresser is divided into CBN crushing process and Grinding Process, CBN crushing process, when trimmer works, hydraulic oil promotes piston 10 and moves along limited block 5, piston 10 drives contiguous block 13 and pressing handle 14 along runner movement, pressing handle 14 relies on rolling bearing 12 to be connected with spring 11, promotion connector 2 linearly guide rail 4 moves, when connector 2 encounters limited block 5, hydraulic oil continues to promote piston 10 and moves, this thrust puts on spring 11 by pressing handle 14, spring 11 Absorbable rod part thrust, play certain cushioning effect, thrust is delivered on connector 2 simultaneously, under the acting in conjunction of limited block 5 and hydraulic jack thrust, trimmer holding position zero deflection, the now diamond roller 7 circle end face cutting edge repairing sword 20 before it and repair CBN emery wheel 16, the two sides cutting edge of CBN emery wheel 16 is repaired with its side finishing sword 21, Grinding Process, when wheel grinding bent axle, hydraulic oil promotes piston 10 and leaves limited block 5, drive the motion in the other direction of whole trimmer, by bent axle 19 clamping between the headstock 15, tailstock 16, the headstock 15 and tailstock 16 driving crank 19 rotate, CBN emery wheel 16 advances and carries out grinding to the trunnion of bent axle 19 and connecting rod neck, now under the effect of hydraulic oil thrust, trimmer remains on noncontact place of limited block 5 and both leave gap, ensures that the rotary space of trimmer and bent axle 19 does not interfere.
Embodiment
In present embodiment, CBN emery wheel 16 and diamond roller 7 all do gyration, produce relative speed difference.Velocity ratio from-1 to+1 can set, and can by selecting to repair from the both sides (left side or right side) of diamond roller 7, carry out-1 ~ 0 or 0 ~+1 two section of velocity ratio finishing respectively, therefore need not carry out electro spindle 8 rotating adjustment, reduce cost.CBN emery wheel 16 and diamond roller 7 do feed motion along rectilinear coordinates axle simultaneously, and speed sets from 0.5mm/min to 10m/min.By the coupling to parameters, achieve the object of CBN emery wheel 16 surfacing.
Example recited above is only be described preferred embodiment of the present utility model; not the utility model scope is limited; under the prerequisite not departing from the utility model design spirit; the various distortion that the common engineers and technicians in this area make the technical solution of the utility model and improvement, all should fall in protection domain that claims of the present utility model determine.

Claims (2)

1. trailing type crankshaft grinding machine with double grinding carriages packaged type CBN dresser, is characterized in that: this device comprises burring machine, hydraulic drive mechanism, buffering micro-adjusting mechanism, position-limit mechanism, wherein, burring machine comprises casing (1), connector (2), diamond roller (7), electro spindle (8), hydraulic drive mechanism comprises slide block (3), line slideway (4), oil cylinder (9), piston (10), contiguous block (13), buffering micro-adjusting mechanism comprises spring (11), rolling bearing (12), pressing handle (14), position-limit mechanism comprises base (6), limited block (5), the wherein headstock (15), CBN emery wheel (16), work supporting block (17), tailstock (18), the component that bent axle (19) is crankshaft grinding machine, front finishing sword (20), the finishing sword that side finishing sword (21) is diamond roller (7), front finishing sword (20) is arranged on one end of diamond roller (7) in order to repair the outer round surface of CBN emery wheel (16), side finishing sword (21) is arranged on diamond roller (7) both sides in order to repair the left and right end face of CBN emery wheel (16), diamond roller (7) can realize the micro-precision finishing of CBN emery wheel (16) three cutting edges,
Specifically, diamond roller (7) is arranged on electro spindle (8) one end; Electro spindle (8) to be arranged in box body hole and to be fixed by screws on casing (1); Casing (1) is fixed by screws in connector (2) top, connector (2) bottom is provided with slide block (3), the connector (2) that slide block (3) are housed can linearly move by guide rail (4), and line slideway (4) screw is connected with base (6); Oil cylinder (9) is fixed by screws on base (6), and the piston (10) in oil cylinder (9) is connected with casing (1) by contiguous block (13); Described rolling bearing (12) is arranged on spring (11) with in the chute of pressing handle (14); The direction of motion of one end of described base (6) linearly guide rail (4) is provided with limited block (5);
Described packaged type CBN dresser is arranged on the work top of trailing type crankshaft grinding machine with double grinding carriages, in Grinding Process, trimmer is arranged on noncontact place of limited block (5) and both leave gap, and trimmer is arranged on the contact position with limited block (5) when trimming wheel.
2. trailing type crankshaft grinding machine with double grinding carriages packaged type CBN dresser according to claim 1, is characterized in that: described diamond roller (7) center line and CBN emery wheel (16) central axis.
CN201420508488.4U 2014-09-04 2014-09-04 Trailing type crankshaft grinding machine with double grinding carriages packaged type CBN dresser Active CN204221614U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201420508488.4U CN204221614U (en) 2014-09-04 2014-09-04 Trailing type crankshaft grinding machine with double grinding carriages packaged type CBN dresser

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Application Number Priority Date Filing Date Title
CN201420508488.4U CN204221614U (en) 2014-09-04 2014-09-04 Trailing type crankshaft grinding machine with double grinding carriages packaged type CBN dresser

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104227564A (en) * 2014-09-04 2014-12-24 北京工业大学 Movable CBN (cubic boron nitride) grinding wheel dresser for following double-grinding-carriage crankshaft grinder
CN110253418A (en) * 2019-03-24 2019-09-20 北京工业大学 A kind of precision and ultra-precision machining method for form grinding

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104227564A (en) * 2014-09-04 2014-12-24 北京工业大学 Movable CBN (cubic boron nitride) grinding wheel dresser for following double-grinding-carriage crankshaft grinder
CN104227564B (en) * 2014-09-04 2017-01-25 北京工业大学 Movable CBN (cubic boron nitride) grinding wheel dresser for following double-grinding-carriage crankshaft grinder
CN110253418A (en) * 2019-03-24 2019-09-20 北京工业大学 A kind of precision and ultra-precision machining method for form grinding

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