Online grinding wheel dressing structure

Abstract

The utility model discloses a kind of online grinding wheel dressing structures, without disassembling grinding wheel can be dressed, realize simplifying operation, improve efficiency.Online grinding wheel dressing structure includes main shaft box, main shaft, grinding wheel, sliding seat, dressing seat, dressing shaft and driving device;The main shaft is installed in the main shaft box, and the grinding wheel is coaxially connected with the end of the main shaft;The sliding seat is slidably fitted on the upper surface of the main shaft box, and its sliding direction is parallel to the axial direction of the main shaft;The dressing seat is slidably fitted on the side of the sliding seat, and its sliding direction is perpendicular to the axial direction of the main shaft;The dressing shaft is installed on the lower surface of the dressing seat, and it is parallel to the main shaft, and the dressing shaft is driven by the driving device to rotate;The circumference of the dressing shaft is provided with several dressing wheels with different outer diameters.

Description

Technical Field

[0001] This utility model belongs to the field of grinding machine technology, and specifically refers to an online grinding wheel dressing structure. Background Technology

[0002] A grinding machine is a commonly used metal processing equipment used to grind workpieces.

[0003] In the machining of aerospace components, sticky metals such as titanium alloys tend to adhere to the surface of the grinding wheel under the high temperatures generated during grinding, affecting the grinding performance and machining accuracy. Therefore, it is necessary to dress the grinding wheel regularly.

[0004] Traditional grinding wheel dressing methods typically require removing the grinding wheel from the grinding machine spindle for offline dressing. This method is cumbersome, inefficient, and can interfere with the normal operation of the grinding machine. Utility Model Content

[0005] The main purpose of this utility model is to provide an online grinding wheel dressing structure to solve the problems existing in the prior art. It can dress the grinding wheel without disassembling it, thereby simplifying the operation and improving efficiency.

[0006] To achieve the above objectives, the solution of this utility model is:

[0007] An online grinding wheel dressing structure includes a spindle box, a spindle, a grinding wheel, a slide, a dressing seat, a dressing shaft, and a drive device. The spindle is installed inside the spindle box, and the grinding wheel is coaxially connected to the end of the spindle. The slide is slidably fitted on the upper surface of the spindle box, and its sliding direction is parallel to the axis of the spindle. The dressing seat is slidably fitted on the side of the slide, and its sliding direction is perpendicular to the axis of the spindle. The dressing shaft is installed on the lower surface of the dressing seat and is parallel to the spindle, and the dressing shaft is driven by the drive device to rotate. The circumferential surface of the dressing shaft is provided with a plurality of dressing wheels with different outer diameters.

[0008] The driving device is a servo motor.

[0009] Preferably, the lower surface of the trimming seat is provided with a mounting seat for mounting the drive device and a shaft seat for rotating one end of the trimming shaft, and the other end of the trimming shaft passes through the mounting seat and is coaxially connected to the output end of the drive device.

[0010] The upper surface of the spindle box is provided with a pair of first slide rails for sliding engagement with the slide block, and the lower surface of the slide block is provided with a first slider that slides on the first slide rails; the side of the slide block is provided with a pair of second slide rails for sliding engagement with the dressing seat, and the side of the dressing seat is provided with a second slider that slides on the second slide rails.

[0011] The spindle box is equipped with a first motor and a first lead screw. The first motor is driven by the first lead screw. The first lead screw is arranged along the Y-axis and threaded through a first nut arranged on the slide. The slide is equipped with a second motor and a second lead screw. The second motor is driven by the second lead screw. The second lead screw is arranged along the Z-axis and threaded through a second nut arranged on the dressing seat.

[0012] Preferably, the first motor and the first lead screw, and the second motor and the second lead screw are arranged in parallel.

[0013] Preferably, the dressing seat is provided with a through hole through which the first lead screw moves, and the through hole is configured as a waist hole extending along the Z-axis direction.

[0014] After adopting the above technical solution, the present invention has the following technical effects:

[0015] (1) This utility model can realize the movement of the Y-axis and Z-axis of the dressing shaft by means of the slide and dressing seat installed on the spindle box, and the dressing shaft can be driven by the drive device 7 to rotate, so as to achieve rotation in the same direction or opposite direction to the grinding wheel.

[0016] (2) When the dressing axis is raised in the Z-axis direction to move away from the grinding wheel, it can avoid the grinding wheel and does not affect the normal grinding action of the grinding wheel. When the dressing axis is lowered in the Z-axis direction and its dressing wheel is close to or even in contact with the grinding wheel, the grinding wheel can be dressed by turning dressing or rolling dressing. This dressing method does not require the grinding wheel to be removed, making the operation simpler and more efficient.

[0017] (3) When the dressing axis moves in the Y-axis direction, different dressing wheels can be positioned vertically relative to the grinding wheel, and different dressing methods can be implemented according to different scenarios. Attached Figure Description

[0018] Figure 1 This is a perspective view of a specific embodiment of the present utility model.

[0019] Figure 2 Breakdown of specific embodiments of this utility model Figure 1 .

[0020] Figure 3 Breakdown of specific embodiments of this utility model Figure 2 .

[0021] Explanation of icon numbers:

[0022] 1-Spindle box; 11-First slide rail; 2-Spindle; 3-Grinding wheel; 4-Slide block; 41-First slider; 42-Second slide rail; 43-First nut; 5-Cut-off seat; 51-Mounting seat; 52-Shaft seat; 53-Second slider; 54-Second nut; 55-Through hole; 6-Cut-off shaft; 61-Cut-off wheel; 7-Drive device; 8-First motor; 9-First lead screw; 10-Second motor; 20-Second lead screw. Detailed Implementation

[0023] To further explain the technical solution of this utility model, the following detailed description is provided through specific embodiments.

[0024] refer to Figures 1 to 3 As shown, this utility model discloses an online grinding wheel dressing structure, including a spindle box 1, a spindle 2, a grinding wheel 3, a slide 4, a dressing seat 5, a dressing shaft 6, and a drive device 7;

[0025] The spindle 2 is installed inside the spindle box 1, and the grinding wheel 3 is coaxially connected to the end of the spindle 2;

[0026] The slide block 4 is slidably fitted on the upper surface of the spindle box 1, and its sliding direction is parallel to the axis of the spindle 2 (usually defined as the Y-axis).

[0027] The dressing seat 5 is slidably fitted on the side of the slide seat 4, and its sliding direction is perpendicular to the axis of the main spindle 2 (usually defined as the Z-axis).

[0028] The dressing shaft 6 is mounted on the lower surface of the dressing seat 5 and is parallel to the main shaft 2. The dressing shaft 6 is driven by the drive device 7 to rotate. The circumferential surface of the dressing shaft 6 is provided with several dressing wheels 61 with different outer diameters.

[0029] Through the above-described scheme, this utility model, via the slide 4 and dressing seat 5 mounted on the spindle box 1, enables the Y-axis and Z-axis movement of the dressing shaft 6. The dressing shaft 6 can be driven by the drive device 7 to rotate, achieving rotation in the same or opposite direction as the grinding wheel 3. When the dressing shaft 6 is raised in the Z-axis direction to move away from the grinding wheel 3, it can avoid interference with the normal grinding action of the grinding wheel 3. When the dressing shaft 6 is lowered in the Z-axis direction, bringing one of its dressing wheels 61 close to or even in contact with the grinding wheel 3, the grinding wheel 3 can be dressed using turning or rolling dressing methods. This method of dressing eliminates the need to remove the grinding wheel 3, making the operation simpler and more efficient. Furthermore, when the dressing shaft 6 moves in the Y-axis direction, different dressing wheels 61 can be positioned vertically opposite the grinding wheel 3, allowing for different dressing methods to be implemented depending on the specific scenario.

[0030] Specifically, the turning dressing method uses a diamond dressing wheel 61 to perform micro-cutting on the surface of the grinding wheel 3, simultaneously completing shaping (restoring geometric accuracy) and sharpening (exposing the abrasive grain cutting edge). Its core implementation steps are as follows: During the machining process, both the grinding wheel 3 and the dressing wheel 61 rotate clockwise. The dressing wheel 61 rotates at 300 RPM. The radial feed (depth of cut A) is usually divided into rough dressing (0.01~0.03mm) and fine dressing (<0.01mm). During fine dressing, the feed rate must be less than 3mm / min to ensure the surface dressing quality.

[0031] The principle of the roller dressing method is different. It relies on the extrusion and rolling between the dressing wheel 61 and the grinding wheel 3. The abrasive grains are micro-fractured by the fracturing binder bridge to form a sharp cutting edge. During the processing, the grinding wheel 3 rotates clockwise and the dressing wheel 61 rotates counterclockwise. The number of revolutions n = k × (diameter of dressing wheel 61 / diameter of grinding wheel 3 × number of revolutions of grinding wheel 3) where k is the linear velocity proportional coefficient, and the value range is 0.75≤k≤0.9 (dynamically adjusted according to process requirements).

[0032] The following are specific embodiments of the present invention.

[0033] The aforementioned drive device 7 is a servo motor, which can precisely control the rotational speed of the dressing shaft 6 and its dressing wheel 61, and output sufficient torque.

[0034] Furthermore, the lower surface of the trimming seat 5 is provided with a mounting seat 51 for mounting the drive device 7, and a bearing seat 52 for rotating one end of the trimming shaft 6. The other end of the trimming shaft 6 passes through the mounting seat 51 and is coaxially connected to the output end of the drive device 7.

[0035] The upper surface of the aforementioned spindle box 1 is provided with a pair of first slide rails 11 for sliding engagement with the slide block 4, and the lower surface of the slide block 4 is provided with a first slider 41 that slides on the first slide rails 11; the side of the slide block 4 is provided with a pair of second slide rails 42 for sliding engagement with the trimming seat 5, and the side of the trimming seat 5 is provided with a second slider 53 that slides on the second slide rails 42. Thus, the sliding of the slide block 4 and the trimming seat 5 can be guided, preventing misalignment.

[0036] The aforementioned spindle box 1 is equipped with a first motor 8 and a first lead screw 9. The first motor 8 is driven by the first lead screw 9, which is threaded along the Y-axis and threaded onto a first nut 43 mounted on the slide 4. The slide 4 is equipped with a second motor 10 and a second lead screw 20, which are driven by the second motor 10 and the second lead screw 20, which is threaded along the Z-axis and threaded onto a second nut 54 mounted on the dressing seat 5. This allows for the movement of the slide 4 along the Y-axis and the dressing seat 5 along the Z-axis, and the movement is self-locking via motor and lead screw transmission, resulting in higher structural stability.

[0037] Furthermore, the first motor 8 and the first lead screw 9, as well as the second motor 10 and the second lead screw 20, are arranged in parallel, and the ends of the motors and lead screws in the same direction are connected by synchronous pulleys, synchronous belts, or other components. This reduces the size of the product and minimizes interference between components during relative movement.

[0038] Meanwhile, the trimming seat 5 is provided with a through hole 55 through which the first lead screw 9 is movably inserted. The through hole 55 is configured as a waist hole extending along the Z-axis direction, which can avoid the end of the first lead screw 9.

[0039] The above embodiments and figures are not intended to limit the product form and style of this utility model. Any appropriate changes or modifications made by those skilled in the art should be considered as not departing from the patent scope of this utility model.

Claims

1. An online grinding wheel dressing structure, characterized in that: It includes a spindle box, spindle, grinding wheel, slide, dressing seat, dressing shaft, and drive unit; The spindle is installed inside the spindle box, and the grinding wheel is coaxially connected to the end of the spindle; The slide block is slidably fitted on the upper surface of the spindle box, and its sliding direction is parallel to the axial direction of the spindle. The dressing seat is slidably fitted on the side of the slide block, and its sliding direction is perpendicular to the axial direction of the main shaft. The dressing shaft is mounted on the lower surface of the dressing seat and is parallel to the main shaft. The dressing shaft is driven by the drive device to rotate. The circumferential surface of the dressing shaft is provided with several dressing wheels with different outer diameters.

2. The online grinding wheel dressing structure as described in claim 1, characterized in that: The driving device is a servo motor.

3. The online grinding wheel dressing structure as described in claim 2, characterized in that: The lower surface of the dressing seat is provided with a mounting seat for mounting the drive device and a shaft seat for rotating one end of the dressing shaft. The other end of the dressing shaft passes through the mounting seat and is coaxially connected to the output end of the drive device.

4. The online grinding wheel dressing structure as described in claim 1, characterized in that: The upper surface of the spindle box is provided with a pair of first slide rails for sliding engagement with the slide block, and the lower surface of the slide block is provided with a first slider that slides on the first slide rails; the side of the slide block is provided with a pair of second slide rails for sliding engagement with the dressing seat, and the side of the dressing seat is provided with a second slider that slides on the second slide rails.

5. The online grinding wheel dressing structure as described in claim 1, characterized in that: The spindle box is equipped with a first motor and a first lead screw. The first motor is driven by the first lead screw. The first lead screw is arranged along the Y-axis and threaded through a first nut arranged on the slide. The slide is equipped with a second motor and a second lead screw. The second motor is driven by the second lead screw. The second lead screw is arranged along the Z-axis and threaded through a second nut arranged on the dressing seat.

6. The online grinding wheel dressing structure as described in claim 5, characterized in that: The first motor and the first lead screw, as well as the second motor and the second lead screw, are arranged in parallel.

7. The online grinding wheel dressing structure as described in claim 5, characterized in that: The dressing seat is provided with a through hole through which the first lead screw moves, and the through hole is configured as a waist hole extending along the Z-axis direction.

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