CN104889889B - A kind of multi-thread emery wheel is combined automatic trimming device - Google Patents

Abstract

The invention provides a multi-line grinding wheel compound automatic dressing device, which includes a fuselage, a first grinding wheel dresser, a second grinding wheel dresser and a grinding mechanism; the first grinding wheel dresser and the second grinding wheel dresser have the same structure, both It includes diamond roller, dressing motor, dressing servo motor, dressing transmission shaft and dressing transmission parts. The dressing motor is connected to the diamond roller through the dressing transmission shaft, and the dressing servo motor is connected to the diamond roller through the dressing transmission part. The grinding mechanism includes grinding wheels, Grinding motor, grinding servo motor, grinding transmission shaft and grinding transmission parts, the grinding motor is connected to the grinding wheel through the grinding transmission shaft, the grinding servo motor is connected to the grinding wheel through the grinding transmission part, and the grinding The grinding wheel is composed of a coaxially arranged groove grinding wheel and a sharpening wheel. The invention has a compact fuselage structure, can remarkably improve production efficiency and product quality, and is easy to operate.

Description

A multi-line grinding wheel compound automatic dressing device

technical field

The invention relates to the technical field of machine tool processing, in particular to a multi-line grinding wheel compound automatic dressing device.

Background technique

Grinding wheel dressing is the operation process of using dressing tools to shape the grinding wheel or remove the blunt surface layer to restore the grinding performance and correct geometry of the working surface. Timely and correct dressing of the grinding wheel is the key to improving grinding efficiency and ensuring grinding. It is an indispensable part of cutting quality.

The most common grinding wheel dressing method in the existing tap grinding machine processing equipment is turning dressing, and the single-grain diamond pen is used as a tool to turn the grinding wheel. This dressing method not only has low structural rigidity, the diamond pen is easy to damage, and the structure is complex, and the dressing accuracy is not high. , the flexibility is not strong. The manual practice method can carry out the initial modification of the new grinding wheel, and make the cutting shape of the grinding wheel tend to the precise profile of the grinding wheel in a short time, but this modification method has a lot of randomness, which will increase the difficulty of subsequent modification. Reduce the modification efficiency. In addition, the existing grinding wheel dressing methods, whether it is a flat grinding wheel or a complex surface grinding wheel, generally only use a single grinding wheel dresser for dressing a single grinding wheel, that is, only one grinding wheel can be dressed at a time.

Contents of the invention

The purpose of the present invention is to provide a multi-line grinding wheel compound automatic dressing device to solve the problems of low dressing efficiency and low precision of the existing grinding wheel dressing device using a single grinding wheel dresser.

In order to meet the above requirements, the technical solution adopted by the present invention is to provide a multi-line grinding wheel compound automatic dressing device, the multi-line grinding wheel compound automatic dressing device includes a fuselage, a grinding table is arranged under the fuselage, and a support The first grinding wheel dresser connected to the upper part of the fuselage, the second grinding wheel dresser arranged on the grinding table, and the grinding mechanism arranged between the first grinding wheel dresser and the second grinding wheel dresser; the first grinding wheel The structure of the dresser is exactly the same as that of the second wheel dresser, including diamond roller, dressing motor, dressing servo motor, dressing transmission shaft and dressing transmission parts. The dressing motor is connected with the diamond roller through the dressing transmission shaft, and the dressing servo motor is driven The components are connected with the diamond roller; the grinding mechanism includes a grinding wheel, a grinding motor, a grinding servo motor, a grinding transmission shaft and a grinding transmission part arranged in the fuselage, and the grinding motor communicates with the grinding transmission shaft through the grinding transmission shaft. The grinding wheel is connected, and the grinding servo motor is connected with the grinding wheel through the grinding transmission part. The grinding wheel is composed of a coaxial grinding groove grinding wheel and a sharpening grinding wheel; The servo motor, the grinding motor and the grinding servo motor are electrically connected.

Further, the first grinding wheel dresser is set opposite to the second grinding wheel dresser.

Further, the grinding servo motor is arranged above the fuselage.

Further, the center distance between the groove grinding wheel and the sharpening wheel is 25mm.

The advantages of this multi-line grinding wheel compound automatic dressing device are as follows: the upper and lower independent grinding wheel dressers can be configured to dress the grinding wheel, and each grinding wheel dresser can simultaneously complete the external grinding of the grooved grinding wheel and the sharpened grinding wheel. Contour trimming, compact body structure, high degree of digitalization, significantly improved production efficiency and product quality, simple operation, low technical requirements for workers, high precision and stable quality of processed products, especially suitable for high precision and mass production model.

Description of drawings

The accompanying drawings described here are used to provide a further understanding of the application and constitute a part of the application. In these drawings, the same reference numerals are used to indicate the same or similar parts. The illustrative embodiments of the application and their descriptions are used The purpose of explaining this application does not constitute an improper limitation of this application. In the attached picture:

Fig. 1 is the structural representation of an embodiment of the present application;

Fig. 2 is the schematic diagram of the modification process of the present application;

Fig. 3 is a schematic diagram of the relative position of the grinding wheel zero point, processing zero position and dressing wheel of the present application.

Among them: 1—body; 2—support bar; 3—first grinding wheel dresser; 4—second grinding wheel dresser; 5—grinding mechanism; 6—grinding table; 7—control components; 31, 41— Dressing drive shaft; 32, 42—dressing transmission parts; 33, 43—dressing motor; 34, 44—dressing servo motor; 35, 45—diamond roller; 51—sharp grinding wheel; 52—groove grinding wheel; 53—grinding Motor; 54—grinding transmission parts; 55—grinding transmission shaft; 56—grinding servo motor.

detailed description

In order to make the purpose, technical solution and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

In the following description, references to "one embodiment," "an embodiment," "an example," "example," etc. indicate that such described embodiment or example may include a particular feature, structure, characteristic, property, element, or limitations, but not every embodiment or example necessarily includes the specific feature, structure, characteristic, property, element or limitation. Additionally, repeated use of the phrase "according to one embodiment of the present application" does not necessarily refer to the same embodiment, although it may.

For simplicity, some technical features known to those skilled in the art are omitted from the following description.

According to one embodiment of the present application, a multi-line grinding wheel compound automatic dressing device is provided, as shown in Figures 1 to 3, including a fuselage 1, a grinding table 6 is arranged under the fuselage 1, and a support bar 2 The first dresser 3 connected to the upper part of the fuselage 1, the second dresser 4 set on the grinding table 6, and the grinding wheel set between the first dresser 3 and the second dresser 4 Cutting mechanism 5; The structure of the first emery wheel dresser 3 and the second emery wheel dresser 4 is exactly the same, all comprises diamond roller 35,45, dressing motor 33,43, dressing servo motor 34,44, dressing transmission shaft 31,41 and Dressing transmission parts 32, 42, dressing motors 33, 43 are connected with diamond rollers 35, 45 through dressing transmission shafts 31, 41, and dressing servo motors 34, 44 are connected with diamond rollers 35, 45 through dressing transmission parts 32, 42; grinding Mechanism 5 comprises grinding wheel, grinding motor 53, grinding servo motor 56 and the grinding transmission shaft 55 and the grinding transmission part 54 that are arranged in the fuselage 1, and grinding motor 53 is connected with grinding by grinding transmission shaft 55. The grinding wheel is connected, and the grinding servo motor 56 is connected with the grinding wheel through the grinding transmission part 54. The grinding wheel is composed of a coaxially arranged grinding groove grinding wheel 52 and a sharpening grinding wheel 51, and the grinding groove grinding wheel 52 is used for the groove of the spiral tip tap. Groove grinding, sharpening grinding wheel 51 is used for the spiral point grinding of spiral point tap; The fuselage 1 is provided with control part 7, control part 7 and dressing motor 33,43, dressing servo motor 34,44, grinding motor 53 And grinding servo motor 56 is electrically connected.

According to an embodiment of the present application, the first grinding wheel dresser 3 and the second grinding wheel dresser 4 of the multi-line grinding wheel compound automatic dressing device are arranged oppositely, that is, the diamond roller 35 of the first grinding wheel dresser 3 is set toward the left, and the second The diamond roller 45 of the grinding wheel dresser 4 is arranged towards the right.

According to an embodiment of the present application, the grinding servo motor 56 of the multi-line grinding wheel compound automatic dressing device is arranged above the machine body 1 .

According to an embodiment of the present application, the center-to-center distance between the groove grinding wheel 52 and the sharpening wheel 51 of the multi-line grinding wheel compound automatic dressing device is 25 mm.

The working principle of the present invention is that the first grinding wheel dresser 3 is driven by a dressing motor 33, and the rotational movement of the diamond roller 35 is realized through the dressing transmission shaft 31; Grinding the feed movement of the grinding wheel in both radial and axial directions, the working principle of the second grinding wheel dresser 4 is the same as that of the first grinding wheel dresser 3 . The grinding motor 53 drives the grinding transmission shaft 55 to realize the rotation of the grinding wheel, and the grinding servo motor 56 realizes the feeding of the grinding wheel along the up-down direction through the grinding transmission part 54 . During the grinding wheel dressing process, the linear speed of the grinding wheel and the dressing wheel must maintain a certain ratio, which is 0.4~0.7.

As shown in Figures 2 and 3, the dressing times of the first grinding wheel dresser 3 and the second grinding wheel dresser 4 are adjustable, which can be single grinding wheel dressing or multiple grinding grinding wheel dressing, the first grinding wheel dresser 3 Dress the sharpened grinding wheel 51 from right to left above the grinding wheel, and then dress the groove grinding wheel 52, and the dressing process of the second grinding wheel dresser 4 is opposite to it. The grinding wheel dressing process of the first grinding wheel dresser 3 is divided into five stages: fast forwarding of sharpened grinding wheel, working forward of sharpened grinding wheel, fast forwarding of grinding groove grinding wheel, working forward of grinding groove grinding wheel and fast rewinding. In the fast-forward stage of sharpening the grinding wheel, the diamond roller 35 is fast-feeded along a straight line; The roller 35 fast forwards to the initial contour line position of the grinding groove grinding wheel 52; the grinding groove grinding wheel works forward stage, the diamond roller 35 feeds at the working speed along the grinding groove grinding wheel 52 contour line; the fast rewinding stage, the grinding groove grinding wheel 52 and sharpening The grinding wheel 51 retreats downwards to the zero point of the grinding wheel, and the diamond roller 35 quickly returns to the initial trimming zero position, and uses this as the basic data for the next grinding.

The two grinding wheel dressers adopt the initial dressing method of feeding along the radial direction of the grinding wheel. During the grinding process, the wear amount of the sharpened grinding wheel 51 and the grooved grinding wheel 52 are different, so the distance compensation amount of the grinding wheel during the grinding wheel dressing process The value with the largest wear of the two grinding wheels shall prevail. The compensation method of the dressing amount of the two grinding wheel dressers is a fixed value compensation method, and the compensation amount can be adjusted in the grinding wheel dressing program; during the dressing process, the original position of the zero point of the grinding wheel in the machine tool coordinate system is fixed. The initial positions of the screw taps, the sharpened grinding wheel 51, the grinding groove grinding wheel 52 and the diamond roller 35 are all different, and the lowest point of the outer diameter of the grinding wheel is always kept at a distance of 2 mm from the outer diameter of the tap.

The above-mentioned embodiments only represent several implementations of the present invention, and the description thereof is relatively specific and detailed, but should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention should be determined by the claims.

Claims (1)

1. A compound automatic dressing device for multi-line grinding wheels, comprising a fuselage (1), a grinding workbench (6) is provided below the fuselage (1), it is characterized in that: it also includes a support bar (2) and The first grinding wheel dresser (3) connected to the upper part of the fuselage (1), the second grinding wheel dresser (4) arranged on the grinding table (6), and the first grinding wheel dresser (3) and the second grinding wheel dresser (4) The grinding mechanism (5) between the grinding wheel dressers (4); the structure of the first grinding wheel dresser (3) and the second grinding wheel dresser (4) is exactly the same, including diamond rollers (35,45), Dressing motors (33, 43), dressing servo motors (34, 44), dressing transmission shafts (31, 41) and dressing transmission parts (32, 42), the dressing motors (33, 43) pass through the dressing transmission shafts (31 , 41) are connected with the diamond rollers (35,45), and the dressing servo motor (34,44) is connected with the diamond rollers (35,45) through the dressing transmission parts (32,42); the grinding mechanism (5) includes the grinding wheel , grinding motor (53), grinding servo motor (56) and the grinding transmission shaft (55) and grinding transmission parts (54) that are arranged in the fuselage (1), and the grinding motor (53) passes through Grinding transmission shaft (55) is connected with grinding wheel, and described grinding servomotor (56) is connected with grinding wheel by grinding transmission part (54), and described grinding wheel is arranged by coaxial grinding ditch grinding wheel ( 52) and a sharpening wheel (51); the fuselage (1) is provided with a control unit (7), and the control unit (7) is connected with a dressing motor (33, 43), a dressing servo motor (34, 44) ), the grinding motor (53) and the grinding servo motor (56) are electrically connected; the first grinding wheel dresser (3) is set opposite to the second grinding wheel dresser (4); the grinding servo motor (56) It is arranged on the top of the fuselage (1); the center distance between the groove grinding wheel (52) and the sharpening wheel (51) is 25mm; the two grinding wheel dressers adopt the initial dressing method of feeding along the radial direction of the grinding wheel. During the grinding process, the wear amount of the sharpened grinding wheel and the grooved grinding wheel are different, so the distance compensation amount of the grinding wheel during the grinding wheel dressing process is based on the value of the larger wear amount of the two grinding wheels, and the dressing amount compensation method of the two grinding wheel dressers It is a fixed-value compensation method, and the compensation amount can be adjusted in the grinding wheel dressing program; during the dressing process, the original position of the zero point of the grinding wheel in the machine tool coordinate system is fixed, and for taps of different specifications, sharpening grinding wheels, groove grinding wheels and The initial positions of the diamond rollers are all different, and the lowest point of the outer diameter of the grinding wheel is always kept at a distance of 2 mm from the outer diameter of the tap.