A symmetrical grinding wheel dressing mechanism with dual linear axes and dual dressing spindles

Abstract

The present invention discloses a symmetrical grinding wheel dressing mechanism with two linear axes and two dressing spindles, comprising two grinding wheel dressers symmetrically arranged on a grinding wheel dressing base; the grinding wheel dresser comprises a dressing spindle, a dresser bracket, a diamond roller, a spindle bearing, and a dresser support; the dresser bracket is mounted on the dresser support, and both ends of the dresser bracket clamp a spindle bearing with a bearing housing; the dressing spindle is mounted on the dresser bracket via the spindle bearing, and the diamond roller is mounted on the dressing spindle and positioned between the two spindle bearings. The present invention has a symmetrical structure with two linear axes and two dressing spindles, and the provision of a clamping block and a dressing bracket simultaneously enables good position locking of the grinding wheel, thereby preventing the grinding wheel from shifting during dressing, improving the dressing accuracy, and thereby improving the quality of the grinding wheel dressing work, thereby ensuring the quality of the grinding wheel product.

Description

Technical Field

[0001] The invention relates to the technical field of grinding wheel dressing, in particular to a symmetrical grinding wheel dressing mechanism with double linear axes and double dressing main axes. Background Art

[0002] During the grinding process, after the grinding wheel for grinding the workpiece has been used for a period of time, the pores on the surface of the grinding wheel are blocked by grinding dust, making it impossible for the grinding wheel to effectively dissipate heat. The corundum particles on the grinding wheel will also be ground to an insufficient sharpness, affecting the grinding performance. It is necessary to use a diamond roller for dressing, remove the grinding dust, and sharpen the grinding wheel.

[0003] In the prior art, the dressing shaft of the grinding wheel dresser is usually fixed at one end. The non-fixed end of the dressing shaft is subjected to a large torque during dressing, which makes the position of the diamond roller easily offset, thereby affecting the dressing accuracy of the grinding wheel and the grinding accuracy of the workpiece; and most of the current grinding wheel dressers are single-set. When the grinder uses different types of grinding wheels, different grinding wheel dressers need to be replaced accordingly, which is inconvenient to use. Summary of the Invention

[0004] The invention provides a symmetrical grinding wheel dressing mechanism with double linear axes and double dressing spindles, so as to overcome the technical problems of low dressing precision and the like.

[0005] In order to achieve the above object, the technical solution of the present invention is:

[0006] A symmetrical grinding wheel dressing mechanism with double linear axes and double dressing spindles comprises: two grinding wheel dressers symmetrically arranged on a grinding wheel dressing base;

[0007] The grinding wheel dresser includes a dressing spindle, a dresser bracket, a diamond roller, a spindle bearing and a dresser support;

[0008] The dresser bracket is installed on the dresser support, and the two ends of the dresser bracket are clamped with the spindle bearing with a bearing shell. The dresser is installed on the dresser bracket through the spindle bearing, and the diamond roller is installed on the dresser spindle and the diamond roller is located between the two spindle bearings.

[0009] Furthermore, the trimmer bracket includes a mounting block and clamping blocks arranged at both ends of the mounting block, a clamping hole is provided between the clamping block and the mounting block, the spindle bearing is provided in the clamping hole and the spindle bearing forms an interference fit with the clamping hole.

[0010] Furthermore, it also includes a guide plate arranged on the trimmer support, the guide plate has a guide protrusion, the top of the trimmer support is provided with a guide groove that cooperates with the guide protrusion, and a baffle is installed at the front end of the trimmer support, and the baffle abuts against the end of the trimmer support.

[0011] Furthermore, it also includes a dresser gasket, which is arranged between the dresser support and the grinding wheel dressing base.

[0012] Furthermore, it also includes a first adjustment key and a second adjustment key arranged between the guide plates, the first adjustment key and the second adjustment key are installed on the trimmer support by screws, and an adjustment key slot is provided on the top of the trimmer support, the first adjustment key is tightly attached to one side of the adjustment key slot, and the second adjustment key is tightly attached to the other side of the adjustment key slot.

[0013] Furthermore, the dresser bracket is provided with a positioning hole, the outer shell of the spindle bearing is provided with a positioning groove, a first positioning screw and a second positioning screw are provided in the positioning hole, the first positioning screw supports the second positioning screw, and the end of the second positioning screw extends into the positioning groove.

[0014] Furthermore, it also includes a linear axis motor, a grating scale, a linear axis slide, a spacer ring and a locking nut;

[0015] The linear axis motor is arranged on the grinding wheel dressing base, and the linear axis motor drives the linear axis slide to move up and down along the guide rail on the grinding wheel dressing base. The grating scale is arranged on one side of the linear axis slide. The diamond roller is installed on the dressing spindle through the locking nut, and the spacer is provided between the diamond roller and the locking nut.

[0016] Furthermore, it also includes a drag chain support block and a drag chain guide block, which are arranged on the grinding wheel dressing base. The drag chain guide block has a guide slope, and the drag chain can slide along the guide slope to the top surface of the drag chain guide block.

[0017] Furthermore, a V-ring is provided between the outer shell of the spindle bearing and the dressing spindle.

[0018] Beneficial effects: The present invention has a symmetrical structure of double linear shafts and double dressing spindles. The two linear shafts drive two dressers respectively. The two dressers can be installed with different dressing wheels and can dress different types of grinding wheels. The diamond roller is installed on the dressing spindle. Both ends of the dressing spindle are installed on the dresser bracket through bearings, so that both ends of the dressing spindle can be subjected to force, so that the diamond roller has better stability during rotation and stronger structural rigidity, which better guarantees the accuracy of grinding wheel dressing.

[0019] The clamping block and dressing bracket can effectively lock the grinding wheel in place, thereby preventing the grinding wheel from shifting during dressing, improving the dressing accuracy, and thus improving the quality of the grinding wheel dressing work and ensuring the quality of the grinding wheel products. The guide plate and guide plate adjustment key can facilitate the installation and positioning after replacing the diamond roller. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following is a brief introduction to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0021] Figure 1 This is a schematic diagram of the three-dimensional structure of the grinding wheel dresser of the present invention;

[0022] Figure 2 This is a schematic diagram of the positions of the bearing housing and the motor-end bearing housing of the present invention;

[0023] Figure 3 This is a schematic structural diagram of the clamping mechanism of the present invention;

[0024] Figure 4 This is a schematic diagram of the positions of screws and pins of the present invention;

[0025] Figure 5 This is a schematic diagram of the position of the guide plate of the present invention;

[0026] Figure 6 This is a schematic diagram of the position of the front baffle of the present invention;

[0027] Figure 7 This is a schematic diagram of the position of the gasket of the dresser of the present invention;

[0028] Figure 8 Schematic diagram of the structure of the dresser gasket of the present invention;

[0029] Figure 9 This is a schematic diagram of the position of the positioning screw of the present invention;

[0030] Figure 10 This is a schematic diagram of the guide plate adjustment key of the present invention;

[0031] Figure 11 This is a schematic structural diagram of the drag chain support block and the drag chain guide block of the present invention;

[0032] Figure 12 This is an exploded view of the grinding wheel dresser structure of the present invention;

[0033] Figure 13 This is a schematic diagram of the positions of the positioning holes and positioning grooves of the present invention.

[0034] Among them, 1. Linear axis motor; 2. Grating scale; 3. Dressing spindle; 4. Linear axis slide; 5. Bearing housing; 6. Motor end bearing housing; 7. Dresser bracket; 8. Mounting block; 9. Clamping block; 10. Guide plate; 11. Baffle; 12. Dresser gasket; 131. First adjustment key; 132. Second adjustment key; 14. Diamond roller; 15. Locking nut; 16. V-ring; 17. Spindle bearing; 18. Skeleton oil seal; 19. Spacer; 20. Dresser support; 21. Coupling; 22. Linear axis motor connecting plate; 23. Drag chain support block; 24. Drag chain guide block; 25. Screw; 26. Pin; 27. Drag chain box; 28. Housing positioning screw; 29. ​​Pressure cover; 30. Positioning hole; 31. Positioning groove; 32. First positioning screw; 33. Second positioning screw; 34. Grinding wheel dressing base. DETAILED DESCRIPTION

[0035] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0036] This embodiment provides a symmetrical grinding wheel dressing mechanism with dual linear axes and dual dressing spindles, such as Figure 1-13 , comprising: two grinding wheel dressers symmetrically arranged on the grinding wheel dressing base 34;

[0037] The grinding wheel dresser includes a dressing spindle 3, a dresser bracket 7, a diamond roller 14, a spindle bearing 17 and a dresser support 20;

[0038] The dresser bracket 7 is installed on the dresser support 20, and both ends of the dresser bracket 7 clamp the spindle bearing 17 with a bearing housing. The dressing spindle 3 is installed on the dresser bracket 7 through the spindle bearing 17, and the diamond roller 14 is installed on the dressing spindle 3 and the diamond roller 14 is located between the two spindle bearings 17.

[0039] In a specific embodiment, the dresser bracket 7 includes a mounting block 8 and clamping blocks 9 disposed at both ends of the mounting block 8. A clamping hole is defined between the clamping block 9 and the mounting block 8. The spindle bearing 17 is disposed within the clamping hole and forms an interference fit with the clamping hole, enabling high-precision dressing of high-precision diamond rollers. The clamping structure formed by the clamping blocks 9 and the mounting block 8 forms an interference fit with the bearing housing, applying appropriate clamping force to the bearing housing while preventing deformation of the bearing housing from affecting bearing accuracy.

[0040] In a specific embodiment, it also includes a linear axis motor 1, a grating ruler 2, a linear axis slide 4, a spacer 19 and a locking nut 15;

[0041] The linear axis motor 1 is arranged on the grinding wheel dressing base 34, and the linear axis motor 1 drives the linear axis slide 4 to move up and down along the guide rail on the grinding wheel dressing base 34. The grating scale 2 is arranged on one side of the linear axis slide 4. The diamond roller 14 is installed on the dressing spindle 3 through the locking nut 15. The spacer 19 is provided between the diamond roller 14 and the locking nut 15. The spacer 19 can be installed with diamond rollers of different models to adapt to the thickness of different rollers.

[0042] The linear shaft motor 1 further includes a coupling 21 and a linear shaft motor connecting plate 22 . The linear shaft motor 1 drives the diamond roller 14 to rotate via the coupling 21 and the linear shaft motor connecting plate 22 .

[0043] In a specific embodiment, the dresser support 20 further includes a guide plate 10 having a guide protrusion. The top of the dresser bracket 7 is provided with a guide groove that cooperates with the guide protrusion. A baffle 11 is mounted on the front end of the dresser bracket 20, and the baffle 11 abuts against the end of the dresser bracket 7. When the diamond roller 14 needs to be replaced, the screws securing the top end are loosened, the baffle 11 is removed, and the dresser bracket 7 can be withdrawn.

[0044] In a specific embodiment, a dresser shim 12 is further included. The dresser shim 12 is disposed between the dresser support 20 and the grinding wheel dressing base 34. The dresser shims 12 of different thicknesses are provided to adjust the horizontal and vertical positions of the dresser support 7. A buckle is provided on the upper end of the dresser shim 12 for easy removal.

[0045] In a specific embodiment, a first adjustment key 131 and a second adjustment key 132 are provided between the guide plates 10. The first and second adjustment keys 131 and 132 are mounted on the dresser support 20 via screws 25. An adjustment key slot is provided at the top of the dresser bracket 7. The first adjustment key 131 abuts against one side of the adjustment key slot, and the second adjustment key 132 abuts against the other side of the adjustment key slot. By adjusting the left-right distance between the first and second adjustment keys 131 and 132, the centerline of the dressing spindle 3 is kept parallel to the center of the grinding wheel, and the first and second adjustment keys 131 and 132 are ensured to mate with the key slots of the dresser bracket 7. When the first and second adjustment keys 131 and 132 are first installed, their positions are determined. The dresser bracket 7 is positioned using the first and second adjustment keys 131 and 132. When the dresser bracket 7 is removed or replaced, the first and second adjustment keys 131 and 132 can be used to ensure the accuracy of the dresser bracket 7's position.

[0046] In a specific embodiment, it also includes a drag chain support block 23 and a drag chain guide block 24, which are arranged on the grinding wheel dressing base 34, and the drag chain guide block 24 has a guiding slope. The drag chain support block 23 and the drag chain guide block 24 can lead the drag chain out of the drag chain box 27 and rotate with the grinding wheel dresser. Since the drag chain is long, the drag chain will have a certain bending under the action of gravity when the grinding wheel dresser rotates. The arrangement of the drag chain support block 23 and the drag chain guide block can make the drag chain supported by the drag chain support block 23 along the drag chain guide block.

[0047] In a specific embodiment, a V-ring 16 is provided between the housing of the spindle bearing 17 and the trimming spindle 3 to block dust. The contact seal of the V-ring 16 provides a better sealing effect. During rotation, the V-ring 16 deforms under the action of centrifugal force, which can reduce friction.

[0048] In a specific embodiment, the dresser bracket 7 is provided with a positioning hole 30, and the outer shell of the spindle bearing is provided with a positioning slot 31. A first positioning screw 32 and a second positioning screw 33 are provided in the positioning hole 30. The first positioning screw 32 abuts the second positioning screw 33, and the end of the second positioning screw 33 extends into the positioning slot 31. The first and second positioning screws 32 and 33 are used to axially position the dresser bracket 7 before clamping at both ends, preventing the dresser bracket 7 from axial movement.

[0049] In a specific embodiment, a bearing housing 5 and a motor-end bearing housing 6 are further included. The bearing housing 5 is used to protect the dressing spindle 3, and the motor-end bearing housing 6 is used to protect the spindle bearing 17. The dressing spindle 3 is positioned by inserting the housing set screws 28 into the axial positions of the bearing housing 5 and the motor-end bearing housing 6, and then tightening the set screws with set screws.

[0050] In a specific embodiment, a skeleton oil seal 18 is further included, which is disposed on both sides of the spindle bearing. When the grinding wheel dresser runs at high speed, the diamond roller 14 generates a large amount of dust and throws out oil. The V-ring 16 and the skeleton oil seal 18 can play a double-layer protection role.

[0051] In a specific embodiment, a pressure cover 29 is further included, and the pressure cover 29 is used to further fix the linear axis motor 1.

[0052] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A symmetrical grinding wheel dressing mechanism with dual linear axes and dual dressing spindles, characterized in that: include: Two grinding wheel dressers symmetrically arranged on a grinding wheel dressing base (34); The grinding wheel dresser comprises a dressing spindle (3), a dresser bracket (7), a diamond roller (14), a spindle bearing (17) and a dresser support (20); The dresser bracket (7) is mounted on the dresser support (20), and the spindle bearing (17) with a bearing housing is clamped at both ends of the dresser bracket (7). The dresser spindle (3) is mounted on the dresser bracket (7) through the spindle bearing (17), and the diamond roller (14) is mounted on the dresser spindle (3) and the diamond roller (14) is located between the two spindle bearings (17); It also includes a guide plate (10) provided on the dresser support (20), the guide plate (10) having a guide protrusion, a guide groove cooperating with the guide protrusion being provided on the top of the dresser support (7), the guide groove being opened in a direction parallel to the center line of the dresser spindle (3), a baffle (11) being installed at the front end of the dresser support (20), the baffle (11) being in contact with the end of the dresser support (7); The trimmer bracket (7) further comprises a first adjustment key (131) and a second adjustment key (132) disposed between the guide plates (10), wherein the first adjustment key (131) and the second adjustment key (132) are mounted on the trimmer bracket (20) via screws (25), and the positions of the first adjustment key (131) and the second adjustment key (132) are adjusted and determined via the screws (25); an adjustment key slot is disposed on the top of the trimmer bracket (7), wherein the first adjustment key (131) is in close contact with one side of the adjustment key slot, and the second adjustment key (132) is in close contact with the other side of the adjustment key slot.

2. A symmetrical grinding wheel dressing mechanism with two linear axes and two dressing spindles according to claim 1, characterized in that: The trimmer bracket (7) comprises a mounting block (8) and clamping blocks (9) arranged at both ends of the mounting block (8); a clamping hole is provided between the clamping block (9) and the mounting block (8); the spindle bearing (17) is provided in the clamping hole, and the spindle bearing (17) forms an interference fit with the clamping hole.

3. A symmetrical grinding wheel dressing mechanism with two linear axes and two dressing spindles as claimed in claim 1, characterized in that: It also includes a dresser gasket (12), which is arranged between the dresser support (20) and the grinding wheel dressing base (34).

4. A symmetrical grinding wheel dressing mechanism with two linear axes and two dressing spindles according to claim 1, characterized in that: The trimmer bracket (7) is provided with a positioning hole (30), the outer shell of the spindle bearing is provided with a positioning groove (31), a first positioning screw (32) and a second positioning screw (33) are provided in the positioning hole (30), the first positioning screw (32) supports the second positioning screw (33), and the end of the second positioning screw (33) extends into the positioning groove (31).

5. A symmetrical grinding wheel dressing mechanism with dual linear axes and dual dressing spindles as claimed in claim 1, characterized in that: It also includes a linear axis motor (1), a grating ruler (2), a linear axis slide (4), a spacer (19) and a locking nut (15); The linear axis motor (1) is arranged on the grinding wheel dressing base (34), and the linear axis motor (1) drives the linear axis slide (4) to move up and down along the guide rail on the grinding wheel dressing base (34). The grating scale (2) is arranged on one side of the linear axis slide (4). The diamond roller (14) is installed on the dressing spindle (3) through the locking nut (15), and the spacer (19) is provided between the diamond roller (14) and the locking nut (15).

6. A symmetrical grinding wheel dressing mechanism with two linear axes and two dressing spindles according to claim 1, characterized in that: It also includes a drag chain support block (23) and a drag chain guide block (24), wherein the drag chain support block (23) and the drag chain guide block (24) are arranged on the grinding wheel dressing base (34), and the drag chain guide block (24) has a guide inclined surface, and the drag chain can slide along the guide inclined surface to the top surface of the drag chain guide block (24).

7. A symmetrical grinding wheel dressing mechanism with two linear axes and two dressing spindles according to claim 1, characterized in that: A V-ring (16) is provided between the outer shell of the spindle bearing (17) and the trimming spindle (3).

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