CN200974191Y

CN200974191Y - Diamond grinding wheel dressing device

Info

Publication number: CN200974191Y
Application number: CN 200620159342
Authority: CN
Inventors: 李长河
Original assignee: Qingdao University of Technology
Current assignee: Qingdao University of Technology
Priority date: 2006-11-21
Filing date: 2006-11-21
Publication date: 2007-11-14
Anticipated expiration: 2016-11-21

Abstract

The utility model relates to a mechanical equipment, in particular to a diamond grinding wheel trimming device. The conventional similar device has high operation complexity by respectively carrying out the truing and dressing operations in trimming operation of superhard abrasive diamond grinding wheel. A step motor is arranged on the outer side of the frame of the device to drive a screw, on which a tapered nut is arranged, the screw penetrates through a support plate 4 on both sides of the frame and a sliding table 6 at the middle of the frame, and the tapered nut reversely butts against a taper in the through hole of the slide table 6. One side of the sliding table 6 is fixedly connected with a high-speed motor 2 below a trimming grinding wheel, and a grinding liquid spray 8 is arranged on the sliding table 6. During operation, the step motor drives the screw to rotate and drives the nut to translate so as to push the sliding table 6 and the trimming grinding wheel 1 to slightly advance upwards, thereby achieving the truing and dressing operation of bond-dense superhard abrasive diamond grinding wheel. The utility model has such advantages as simple structure, stable operation, reliable performance and high processing accuracy, and solves the trimming problems of superhard abrasive diamond grinding wheel.

Description

Diamond abrasive wheel dressing device

Technical field the utility model is a kind of plant equipment, promptly a kind of diamond abrasive wheel dressing device.

The background technology skive is a kind of super-abrasive grinding wheel, because of it has good grinding performance and antiwear property, does not need often finishing and is favored.Especially in recent years, superhard material sharply increases the application of skive in engineering and sciemtifec and technical sphere extensive use., the bigger problem of finishing difficulty after this emery wheel also exists initial installation and uses blunt becomes the important topic that the countries in the world colleague studies.The finishing of super-abrasive grinding wheel is divided into two contents of shaping and dressing usually.Wherein, shaping is that emery wheel is carried out micro cutting, makes emery wheel reach desired geometrical precision, and makes the most advanced and sophisticated trickle fragmentation of abrasive material, forms sharp sharpening.Dressing is the bond of removing between abrasive particle, and making has certain chip space between abrasive particle, and makes outside the outstanding bond of sharpening, forms cutting edge.At present, for the loose skive of bond, shaping and dressing can carry out in an operation simultaneously, for bond compact-type super-abrasive grinding wheel, as resin or metal anchoring agent diamond wheel etc., shaping and dressing must carry out respectively, and there is finishing time length in this method for trimming, repairs shortcomings such as difficulty is big, dressing efficiency is low.Therefore efficient, the high-quality dressing technique of skive become the key technology that realizes hard brittle material precision and superfine grinding, high-speed and high-efficiency grinding, plunge grinding, grinding automation.Therefore development low cost, high efficiency, wide adaptability, incorporate technology and equipment has become the task of top priority to the high skive shaping of industrial applications degree with dressing.

The summary of the invention the purpose of this utility model provides the diamond grinding wheel dressing machine that a kind of shaping and dressing can carry out simultaneously in an operation.

Above-mentioned purpose is realized by following technical scheme: develop a kind of diamond abrasive wheel dressing device, this trimming device also has a base and top frame, drives the grinding parts by motor and control device and carries out operation.Different is: said grinding parts are trimming wheels, and the working face of this trimming wheel makes progress, and the output shaft with high-speed electric expreess locomotive interrelates below; Frame on the said base is the gripper shoe that erect relatively on the two sides, and stands on a side of high-speed electric expreess locomotive and trimming wheel; In the outside of frame, stepper motor is housed, stepper motor drives a leading screw, and leading screw is flat to be through on the two sides gripper shoe of frame, and tapered cup nut is housed above; Between the gripper shoe of the two sides of frame, a slide unit moving up and down is arranged, the high-speed electric expreess locomotive of slide unit one side below trimming wheel is connected mutually; The middle part of slide unit has through hole, on the upper side wall of through hole, a bullet is housed, and leading screw passes the through hole of slide unit, and the bullet axle center line parallel in tapered cup nut above the leading screw and the slide unit through hole, awl be on the contrary, and is in contact with one another; Above slide unit, be provided with the grinding fluid shower nozzle relative with the trimming wheel flour milling.During work, stepper motor drives leading screw and rotates, and the tapered cup nut translation on the leading screw promotes slide unit and trimming wheel and makes progress littlely to advance, under high-speed electric expreess locomotive drives, and trimming wheel high speed rotating and skive is carried out shaping.By the come off free abrasive action of abrasive particle of trimming wheel, remove the bond around the diamond abrasive grain, so the abrasive particle projecting height increases gradually, realize the dressing of skive.In the dressing process, between freeing wheel and skive, spray into grinding fluid by jet head, wash away the abrasive particle and the bond material that are trimmed, thereby once finish the dressing operation of skive.

The diamond abrasive wheel dressing device of employing technique scheme can once be finished shaping and two operations of dressing of bond compact-type super hard abrasive skive, and have simple in structure, stable working, dependable performance, wide accommodation, characteristics such as machining accuracy height are for a finishing difficult problem that solves the super hard abrasive skive provides condition.

The description of drawings specific embodiment of the utility model is provided by the following drawings:

Fig. 1 is the front view of a kind of embodiment;

Fig. 2 is the left view of this embodiment;

Fig. 3 is the vertical view of this embodiment;

Fig. 4 is the working state schematic representation of this embodiment.

Among the figure as seen: trimming wheel 1, high-speed electric expreess locomotive 2, base 3, gripper shoe 4, stepper motor 5, slide unit 6, grinding fluid case 7, grinding fluid shower nozzle 8, bullet 9, tapered cup nut 10, leading screw 11, through hole 12, slideway 13, skive 14.

The specific embodiment is introduced a kind of embodiment below in conjunction with accompanying drawing:

As shown in Figure 1, this diamond abrasive wheel dressing device is made of the workpiece on the left side and the frame and the control assembly on the right side.Workpiece is made of top trimming wheel 1 and following high-speed electric expreess locomotive 2.Frame is that the gripper shoe 4 by base 3 and top two opposition constitutes.By Fig. 1,2,3 as seen, a slide unit 6 is arranged between two gripper shoes 4, slide unit 6 can move up and down under the restriction of rack slide 13.Slide unit 6 middle parts are the through hole 12 of horizontal direction, the through hole 12 upper side walls bullet 9 that is connected.Have the leading screw 11 of a level pass frame two gripper shoes 4 and between the through hole 12 of slide unit 6.The axis of the bullet 9 in equipped tapered cup nuts 10 above the leading screw 11, tapered cup nut 10 and slide unit through hole 12 is parallel, bores on the contrary, and is in contact with one another.That is to say that the weight of slide unit 6 is to be pressed on the leading screw 11 by bullet 9.The diameter of slide unit 6 through holes 12 is more much bigger than the diameter of the tapered cup nut on the leading screw 11 10, or a slotted hole, so, slide unit 6 can with leading screw 11 relative displacements.As shown in the figure, in the frame outside micro-step motor 5 is housed also, micro-step motor 5 can drive leading screw 11 and rotate.When leading screw 11 rotated, top tapered cup nut 10 will horizontal displacement, and promotes contacted with it bullet 9 and vertically move, thus the upper and lower displacement of drive slide unit.Because leading screw 11 and tapered cup nut 10 are to adopt high-accuracy screw thread pair to cooperate, high performance of control system in addition, so, can realize the little knee springing that advances of the high accuracy of slide unit, can satisfy little feeding requirement of dressing operation.On the other hand, trimming wheel is general to require to have high rotational speed, and can speed governing in by a relatively large margin, therefore, has been equipped with the adjustable high-speed electric expreess locomotive 2 of rotating speed.High-speed electric expreess locomotive can stepless speed regulation between 5000～20000r/min.Like this, trimming wheel 1 can be under drive power source separately with skive 14, end face contact carrying out dressing operation.

Fig. 4 has represented the duty of this equipment.As shown in the figure, trimming wheel 1 is revolved at a high speed under the drive of high-speed electric expreess locomotive 2, the skive 14 that is trimmed of order rotates under the drive of grinding wheel spindle and near trimming wheel 1 again, and drive the axial feed that bullet is adjusted freeing wheel by micro-step motor, make the two-wheeled contact and produce appropriate pressure, the rotating speed of trimming wheel 1 is 3～10 times of the skive 14 that is trimmed, can finish trimming fast.Simultaneously, the abrasive particle that comes off on the emery wheel is again being trimmed suitable the dispeling of bond around the diamond abrasive grain on the emery wheel, top layer diamond abrasive grain evagination, this moment, jet head sprayed into grinding fluid between freeing wheel and skive, grinding fluid washes away abrasive particle and the bond material that is trimmed, and has finished the dressing process of skive.

This trimming wheel 1 both can be used plain wheel, also can use skive.Plain wheel both can be used the corundum abrasive emery wheel, also can use the silicon carbide abrasive emery wheel, and the granularity of abrasive material can be from selecting between 46 orders (average grain diameter 390 μ m)～W7 (average grain diameter 6 μ m).Select between granularity 80 orders of skive (average grain diameter 200 μ m)～W7 (average grain diameter 6 μ m).The shape of trimming wheel 1 can be determined as requested, can be cup emery wheel, flaring cup wheel, also can be flat-faced wheel.Both can be implemented in the line trimming wheel, also can use by off-line.Turning to of trimming wheel 1 can be with to be trimmed emery wheel 14 identical, also can be opposite.The skive kind that is fit to finishing is also a lot, promptly can be resinoid bond, metal (bronze) bond, can also be vitrified bonded grinding wheel and plated metal emery wheel.

Claims

1. diamond abrasive wheel dressing device, a base (3) and top frame are also arranged, drive the grinding parts by motor and control device and carry out operation, it is characterized in that: said grinding parts are trimming wheels (1), the working face of this trimming wheel (1) makes progress, and the output shaft with high-speed electric expreess locomotive (2) interrelates below; Frame on the said base (3) is the gripper shoe (4) that erect relatively on the two sides, and stands on a side of high-speed electric expreess locomotive (2) and trimming wheel (1); In the outside of frame, stepper motor (5) is housed, stepper motor (5) drives a leading screw (11), and leading screw (11) is flat to be through on the two sides gripper shoe (4) of frame, and tapered cup nut (10) is housed above; Between the two sides of frame gripper shoe (4), a slide unit moving up and down (6) is arranged, the high-speed electric expreess locomotive (2) of slide unit (6) one sides below trimming wheel (1) is connected mutually; The middle part of slide unit (6) has through hole (12), on the upper side wall of through hole (12), a bullet (9) is housed, leading screw (11) passes the through hole (12) of slide unit (6), tapered cup nut (10) above the leading screw (11) and interior bullet (9) axis parallel of slide unit (6) through hole (12), awl is on the contrary, and is in contact with one another; Top in slide unit (6) is provided with the grinding fluid shower nozzle (8) relative with trimming wheel (1) working face.

2. diamond abrasive wheel dressing device according to claim 1, it is characterized in that: said trimming wheel (1) is a plain wheel, promptly adopt the emery wheel of corundum abrasive or silicon carbide abrasive, the granularity of abrasive material is 46 orders (average grain diameter 390 μ m)～W7 (average grain diameter 6 μ m).

3. diamond abrasive wheel dressing device according to claim 1 is characterized in that: said trimming wheel (1) is a skive, and the granularity of diamond abrasive is 80 orders (average grain diameter 200 μ m)～W7 (average grain diameter 6 μ m).

4. diamond abrasive wheel dressing device according to claim 1 is characterized in that: the high-speed electric expreess locomotive (2) of said drive trimming wheel (1) is rotating speed adjustable stepless speed-regulating motor between 5000～20000r/min.

5. diamond abrasive wheel dressing device according to claim 1 is characterized in that: said trimming wheel (1) is a cup emery wheel.

6. diamond abrasive wheel dressing device according to claim 1 is characterized in that: said trimming wheel (1) is a flaring cup wheel.

7. diamond abrasive wheel dressing device according to claim 1 is characterized in that: said trimming wheel (1) is a flat-faced wheel.

8. diamond abrasive wheel dressing device according to claim 1 is characterized in that: the skive that turns to be trimmed of said trimming wheel (1) turns to identical.

9. diamond abrasive wheel dressing device according to claim 1 is characterized in that: the skive that turns to and be trimmed (14) switched in opposite of said trimming wheel (1).