CN200974191Y - Diamond grinding wheel dressing device - Google Patents

Abstract

The utility model relates to mechanical equipment, namely a diamond grinding wheel dressing device. The current similar devices must separate the shaping and sharpening when carrying out the dressing operation of the superabrasive diamond grinding wheel, which is relatively difficult. The outer side of the frame of this device is equipped with a stepping motor, which drives a lead screw, on which a tapered nut is installed, and the lead screw passes through the supporting plates 4 on both sides of the frame and the slide table 6 in the middle of the frame, the tapered The nut and the cone in the through hole of the slide table 6 offset against each other, one side of the slide table 6 is fixedly connected with the high-speed motor 2 below the dressing wheel 1, and the top of the slide table 6 is provided with a grinding fluid nozzle 8. When working, the stepper motor drives the lead screw to rotate, the tapered nut translates, and pushes the sliding table 6 and the dressing wheel 1 to advance slightly upwards, so that two processes of dressing and sharpening of the bond-dense superabrasive diamond grinding wheel can be completed at one time. And it has the characteristics of simple structure, stable work, reliable performance, high processing precision, etc., which solves the difficult problem of dressing superabrasive diamond grinding wheel.

Description

Diamond grinding wheel dressing device

Technical field The utility model is a kind of mechanical equipment, that is, a diamond grinding wheel dressing device.

Background technology Diamond grinding wheel is a kind of superabrasive grinding wheel, which is favored because of its excellent grinding performance and wear resistance, and does not require frequent dressing. Especially in recent years, superhard materials have been widely used in the fields of engineering and science and technology, so that the application of diamond grinding wheels has increased dramatically. However, this kind of grinding wheel also has the problem that it is difficult to repair after initial installation and blunt use, and it has become an important subject of research by colleagues all over the world. The dressing of superabrasive grinding wheels is usually divided into two parts: shaping and sharpening. Among them, shaping is to carry out micro-cutting on the grinding wheel, so that the grinding wheel can reach the required geometric shape accuracy, and the tip of the abrasive is finely broken to form a sharp grinding edge. Sharpening is to remove the bonding agent between the abrasive grains, so that there is a certain chip space between the abrasive grains, and the grinding edge protrudes beyond the bonding agent to form a cutting edge. At present, for diamond grinding wheels with loose bond, shaping and sharpening can be carried out at the same time in one process. For dense bond superabrasive grinding wheels, such as resin or metal bonded diamond grinding wheels, shaping and sharpening must be carried out separately. This trimming method has the disadvantages of long trimming time, high trimming difficulty, and low trimming efficiency. Therefore, the high-efficiency and high-quality dressing technology of diamond grinding wheels has become a key technology for realizing precision and ultra-precision grinding of hard and brittle materials, high-speed and high-efficiency grinding, profile grinding, and grinding automation. Therefore, it has become a top priority to develop low-cost, high-efficiency, wide-adaptability, and high-level diamond grinding wheel shaping and sharpening integration technology and equipment.

SUMMARY OF THE INVENTION The purpose of this utility model is to provide a diamond wheel dressing machine which can carry out shaping and sharpening in one process at the same time.

The above object is achieved by the following technical solutions: develop a diamond grinding wheel dressing device, this dressing device also has a base and an upper frame, and the grinding parts are driven by the motor and the control device to perform operations. The difference is: said grinding part is a dressing wheel, the working face of this dressing wheel is upward, and the lower part is connected with the output shaft of the high-speed motor; It stands side by side with the high-speed motor and the dressing wheel; on the outside of the frame, a stepping motor is installed, and the stepping motor drives a lead screw. Nut; between the two support plates of the frame, there is a sliding table that can move up and down, one side of the sliding table is fixedly connected with the high-speed motor under the dressing wheel; the middle part of the sliding table has a through hole, and the upper part of the On the side wall, a cone is installed, and the lead screw passes through the through hole of the slide table. The cone nut on the lead screw is parallel to the axis line of the cone in the through hole of the slide table, the cone direction is opposite, and they are in contact with each other; On the top of the slide table, there is a grinding fluid nozzle opposite to the grinding surface of the dressing wheel. When working, the stepper motor drives the lead screw to rotate, and the tapered nut on the lead screw translates, pushing the sliding table and the dressing wheel to advance slightly upwards. Driven by the high-speed motor, the dressing wheel rotates at high speed to shape the diamond grinding wheel. Through the free grinding effect of the grinding wheel falling off the abrasive grains, the bond around the diamond abrasive grains is removed, so the protruding height of the abrasive grains gradually increases, and the sharpening of the diamond grinding wheel is realized. During the sharpening process, the liquid spray head sprays the grinding fluid between the dressing wheel and the diamond grinding wheel to wash away the trimmed abrasive grains and bond materials, thus completing the dressing of the diamond grinding wheel at one time.

The diamond grinding wheel dressing device adopting the above technical scheme can complete two processes of dressing and sharpening of the bonded superabrasive diamond grinding wheel at one time, and has the characteristics of simple structure, stable operation, reliable performance, wide application range, and high processing accuracy. It provides conditions for solving the dressing problem of superabrasive diamond grinding wheel.

BRIEF DESCRIPTION OF THE DRAWINGS The 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 side view of this embodiment;

Figure 3 is a top view of such an embodiment;

Fig. 4 is a schematic diagram of the working state of this embodiment.

It can be seen in the figure: dressing wheel 1, high-speed motor 2, base 3, support plate 4, stepping motor 5, slide table 6, grinding fluid tank 7, grinding fluid nozzle 8, cone body 9, cone nut 10, wire Bar 11, through hole 12, slideway 13, diamond grinding wheel 14.

Specific embodiments A kind of embodiment is introduced below in conjunction with accompanying drawing:

As shown in Figure 1, this diamond grinding wheel dressing device is made of the working parts on the left and the frame and control parts on the right. The working parts are composed of the dressing wheel 1 above and the high-speed motor 2 below. The frame is composed of a base 3 and two opposite support plates 4 above. As can be seen from Figures 1, 2 and 3, there is a slide table 6 between the two support plates 4, and the slide table 6 can move up and down under the restriction of the frame slideway 13. The middle part of the slide table 6 is a through hole 12 in the horizontal direction, and the upper side wall of the through hole 12 is fixedly connected with a cone 9 . A horizontal leading screw 11 is arranged to pass through the two support plates 4 of the frame and the through hole 12 of the slide table 6 between them. A tapered nut 10 is fitted on the leading screw 11, the tapered nut 10 is parallel to the axis of the cone 9 in the through hole 12 of the slide table, the tapered directions are opposite, and they contact each other. That is to say, the weight of the slide table 6 is pressed on the leading screw 11 through the cone 9 . The diameter of the slide table 6 through hole 12 is much larger than the diameter of the tapered nut 10 on the leading screw 11, or is a long hole, so the slide table 6 can be displaced relative to the leading screw 11. As shown in the figure, a micro-stepping motor 5 is also installed outside the frame, and the micro-stepping motor 5 can drive the leading screw 11 to rotate. When the leading screw 11 rotates, the conical nut 10 above will displace horizontally, which will push the conical body 9 in contact with it to move longitudinally, thereby driving the slide table to move up and down. Since the lead screw 11 and the tapered nut 10 are matched by high-precision thread pairs and a high-performance control system, the high-precision micro-feeding elastic action of the sliding table can be realized, which can meet the micro-feeding requirements of the trimming operation. On the other hand, the dressing wheel is generally required to have a relatively high speed, and the speed can be adjusted within a relatively large range. Therefore, a high-speed motor 2 with an adjustable speed is equipped. The high-speed motor can be steplessly adjusted between 5000 and 20000r/min. In this way, the dressing grinding wheel 1 and the diamond grinding wheel 14 can be dressed by contacting the end faces under the drive of their respective power sources.

Figure 4 shows the working state of this device. As shown in the figure, the dressing grinding wheel 1 is rotated at high speed under the drive of the high-speed motor 2, and then the dressed diamond grinding wheel 14 is driven by the main shaft of the grinding wheel to rotate and approach the dressing wheel 1, and the cone is driven by a micro-stepping motor. Adjust the axial feed of the dressing wheel so that the two wheels contact and generate moderate pressure. The speed of the dressing wheel 1 is 3 to 10 times that of the diamond grinding wheel 14 to be dressed, so that the shaping process can be completed quickly. At the same time, the abrasive grains falling off the grinding wheel properly remove the bond around the diamond abrasive grains on the dressed grinding wheel, and the surface layer of diamond abrasive grains protrudes outward. At this time, the liquid spray head sprays the grinding fluid between the dressing wheel and the diamond grinding wheel. , the grinding fluid washes away the trimmed abrasive grains and bond materials, completing the sharpening process of the diamond grinding wheel.

This dressing wheel 1 both can use common emery wheel, also can use diamond emery wheel. Ordinary grinding wheels can be either corundum abrasive grinding wheels or silicon carbide abrasive grinding wheels. The abrasive grain size can be selected from 46 mesh (average particle size 390 μm) to W7 (average particle size 6 μm). The particle size of the diamond grinding wheel is selected from 80 mesh (average particle size 200 μm) to W7 (average particle size 6 μm). The shape of the dressing grinding wheel 1 can be determined according to requirements, and can be a cup-shaped grinding wheel, a bowl-shaped grinding wheel, or a flat grinding wheel. Both on-line dressing and off-line use can be realized. The turning direction of the dressing grinding wheel 1 can be the same as that of the dressing grinding wheel 14, or it can be opposite. There are also many types of diamond grinding wheels suitable for dressing, that is, resin bond, metal (bronze) bond, vitrified bond grinding wheel and electroplated metal grinding wheel.

Claims (9)

1. A diamond grinding wheel dressing device also has a base (3) and a frame above, and the grinding part is driven by a motor and a control device to perform operations, and it is characterized in that: said grinding part is a dressing wheel (1) , the working face of this dressing wheel (1) is upward, and the following is connected with the output shaft of the high-speed motor (2); One side of motor (2) and dressing wheel (1); On the outside of frame, stepper motor (5) is housed, and stepper motor (5) drives a leading screw (11), and leading screw (11) is flat Wear it on the two support plates (4) of the frame, on which a tapered nut (10) is housed; between the two support plates (4) of the frame, there is a slide table (6) that can move up and down, the slide table (6) One side is fixedly connected with the high-speed motor (2) under the dressing wheel (1); the middle part of the slide table (6) has a through hole (12), and on the upper side wall of the through hole (12), a There is a tapered body (9), and the leading screw (11) passes through the through hole (12) of the slide table (6), and the tapered nut (10) on the leading screw (11) is connected with the slide table (6) through hole (12). ) inside the cones (9) are parallel to the axes, the cones are opposite, and they are in contact with each other; on the top of the slide table (6), there is a grinding fluid nozzle (8) opposite to the working surface of the dressing wheel (1). 2. diamond grinding wheel dressing device according to claim 1, is characterized in that: said dressing grinding wheel (1) is common emery wheel, promptly adopts the emery wheel of corundum abrasive material or silicon carbide abrasive material, and the grain size of abrasive material is 46 orders (average grain diameter 390 μm) ~ W7 (average particle size 6 μm). 3. The diamond grinding wheel dressing device according to claim 1, characterized in that: said dressing grinding wheel (1) is a diamond grinding wheel, and the particle size of the diamond abrasive is 80 orders (average particle diameter 200 μm)～W7 (average particle diameter 6 μm) ). 4. The dressing device for diamond grinding wheel according to claim 1, characterized in that: the high-speed motor (2) driving the dressing wheel (1) is a stepless motor whose speed is adjustable between 5000 and 20000r/min. speed motor. 5. The dressing device for diamond grinding wheel according to claim 1, characterized in that: said dressing wheel (1) is a cup-shaped grinding wheel. 6. The dressing device for diamond grinding wheel according to claim 1, characterized in that: said dressing wheel (1) is a bowl-shaped grinding wheel. 7. The dressing device for diamond grinding wheel according to claim 1, characterized in that: said dressing grinding wheel (1) is a plane grinding wheel. 8. The diamond grinding wheel dressing device according to claim 1, characterized in that: the steering of said dressing grinding wheel (1) is the same as that of the diamond grinding wheel being dressed. 9. The diamond grinding wheel dressing device according to claim 1, characterized in that: the steering of said dressing grinding wheel (1) is opposite to that of the dressing diamond grinding wheel (14).

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