Power roller dresser capable of rotating by 90 degrees

Abstract

The utility model discloses a power roller dresser capable of rotating by 90 degrees, and relates to the technical field of roller dressers, the power roller dresser comprises a shell, and further comprises a roller rotation assembly, a power driving assembly and a rotating assembly, the roller rotation assembly comprises a central shaft, a driven belt wheel and a roller which share the same central axis, and the top end and the bottom end of the central shaft are connected with the driven belt wheel and the roller respectively; the power driving assembly comprises a micro motor, the micro motor is in transmission connection with a driving belt wheel, and a synchronous belt is linked with the driving belt wheel and a driven belt wheel; the transposition assembly comprises a gland, a rotating seat and a rotating sleeve, the rotating seat and the rotating sleeve share the same central axis, the rotating sleeve is arranged on the rotating seat in a sleeving mode, the locating pin is fixed to the rotating seat, and an arc groove concentric with the rotating axis is machined in the corresponding position of the rotating sleeve and used for limiting the rotating range of the rotating sleeve on the rotating seat to range from 0 degree to 90 degrees. The 90-degree transposition device can achieve 90-degree transposition, space needed by workpiece clamping is reserved after transposition, the dresser does not need to be taken down, and the effect of improving work efficiency is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of roller dressers, and more specifically to a powered roller dresser which can be indexed by 90 degrees. Background Art

[0002] The roller dresser is an auxiliary tool for dressing the grinding wheel workpiece in size, shape, geometric angle, etc. The existing dresser placed on the workbench has the following disadvantages: the dresser needs to be removed after the grinding wheel is dressed, otherwise the dresser may interfere with the workpiece, which will reduce the work efficiency and needs to be improved. Utility Model Content

[0003] In view of this problem in practical application, the utility model aims to provide a powered roller dresser that can be rotated 90°. The specific scheme is as follows:

[0004] A powered roller dresser capable of 90° rotation comprises a housing, a roller rotation assembly, a power drive assembly, and a rotation assembly, wherein:

[0005] The roller rotating assembly comprises a central shaft with the same central axis, a driven pulley, an inner bushing, an outer bushing and a roller, wherein the central shaft is connected to the driven pulley near the top end; the inner bushing and the outer bushing are sequentially connected to the outside of the central shaft, and the roller rotating assembly as a whole is fixed in the housing by two pairs of angular contact bearings at both ends of the inner bushing and the outer bushing and fixed by positioning screws, and the roller is fixed by the central shaft near the bottom end;

[0006] The power drive assembly includes a micro motor, a driving pulley and a synchronous belt, wherein the micro motor is fixed to the housing, the output end of the micro motor is connected to the driving pulley, and the synchronous belt links the driving pulley and the driven pulley;

[0007] The rotation assembly includes a pressure cover and a swivel seat and a swivel sleeve with the same central axis. The swivel sleeve is mounted on the swivel seat and fixed on the shell. The pressure cover is locked to the top of the swivel seat and embedded in the inner circumference of the swivel sleeve. It also includes a positioning pin, which is fixed on the swivel seat. A circular arc groove concentric with the axis of rotation is machined at the corresponding position on the swivel sleeve to limit the rotation range of the swivel sleeve on the swivel seat. The rotation angle range is between 0°-90°. A locking device is also provided on the swivel sleeve, which is used to lock or loosen the swivel sleeve.

[0008] Furthermore, a mounting hole is provided on one side of the rotating sleeve along its radial direction, and the locking device includes a locking handle, a screw, a pressure plate, and a locking block. The locking block is located in the mounting hole and abuts against one side of the rotating seat. One end of the screw extends into the locking block and is connected to the locking block lead screw nut pair, and the other end is connected to the locking handle via the pressure plate. At the same time, a corner of the locking block is provided with a chamfered surface matching the conical surface of the rotating seat.

[0009] Furthermore, the top end of the driven pulley is locked on the central shaft by a cross-slot pan head screw, an I-type hexagonal nut, and a flat washer, and a washer is also provided between the flat washer and the end face of the central shaft, and the roller rotating assembly is provided with axial locking force by an I-type hexagonal nut.

[0010] Furthermore, the central shaft is connected to the driven pulley and the roller via a flat key.

[0011] Furthermore, the micro motor is provided with a motor cover outside, and the motor cover is fixed on the housing.

[0012] Furthermore, the bottom end portion of the gland is radially contracted so that its bottom end face is pressed against the top end of the swivel seat, and the end face of the gland is used to ensure that the swivel sleeve can rotate freely on the swivel seat but the axial gap between the two is extremely small.

[0013] Furthermore, it also includes a radial micro-feeding assembly, which includes a single-axis fine-tuning platform. The single-axis fine-tuning platform is arranged below the rotating seat and is used for radially adjusting the trimmer.

[0014] Furthermore, a dust cover is provided at the front end of the radial micro-feeding assembly.

[0015] Furthermore, it also includes a base assembly, which includes a base, and the radial micro-feed assembly is installed on the base. The base is provided with multiple groups of radial micro-feed assembly installation holes with optional radial positions along its radial direction.

[0016] Furthermore, two mounting surfaces and two mounting bases are provided below the base, wherein one mounting surface inclined at 15° matches a mounting base also inclined at 15°, and the other horizontal mounting surface matches a vertical mounting base.

[0017] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0018] Through the setting of the indexing component, the dresser of the present application can achieve 90° indexing, so that the dresser does not need to be removed after the grinding wheel is dressed. After indexing, the space required for clamping the grinding wheel workpiece is freed up, which helps to improve work efficiency;

[0019] The roller is driven to rotate by a power drive assembly;

[0020] Micro-adjustment feeding is achieved through the radial micro-feeding assembly, which facilitates the adjustment of the radial position of the dresser on the workbench. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is an internal schematic diagram of the utility model;

[0022] Figure 2 It is a side view of the utility model (without the motor cover);

[0023] Figure 3 It is a top view of the utility model (without the motor cover and lid).

[0024] Figure numerals: 1. housing; 2. cover; 3. center shaft; 4. driven pulley; 5. inner bushing; 6. outer bushing; 7. roller; 8. I-type hexagonal nut; 9. washer; 10. angular contact bearing; 11. micro motor; 12. driving pulley; 13. synchronous belt; 14. motor cover; 15. swivel seat; 16. swivel sleeve; 17. pressure cover; 18. positioning pin; 19. locking device; 20. locking handle; 21. screw; 22. pressure plate; 23. locking block; 24. single-axis fine-tuning platform; 25. dust cover; 26. base; 27. mounting hole. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0026] like Figure 1-3 As shown, a powered roller dresser capable of 90° rotation comprises a shell 1, on which is provided a cover 2, which is fixed to the shell 1 by cross-slot pan head screws, and further comprises a roller rotation assembly, a power drive assembly, a rotation assembly, a radial micro-feed assembly and a base assembly.

[0027] in:

[0028] The roller rotating assembly includes a central shaft 3, a driven pulley 4, an inner bushing 5, an outer bushing 6 and a roller 7. The central shaft 3 is connected to the driven pulley 4 through a spacer and a locking nut near the top shaft end, and the inner side of the driven pulley 4 is connected to the central shaft 3 through a flat key; the top of the driven pulley 4 is locked on the central shaft 3 by a cross slot pan head screw, an I-type hexagonal nut 8, a flat washer and a washer 9, and the entire roller rotating assembly is provided with an axial locking force by an I-type hexagonal nut; the inner bushing 5 and the outer bushing 6 are connected to the central shaft 3 in sequence. Two pairs of angular contact bearings 10 are arranged outside the shaft 3 and outside the center shaft 3 at both ends of the inner bushing 5 and the outer bushing 6. The roller rotary assembly is fixed in the housing 1 by two pairs of angular contact bearings 10 and slotted cone end positioning screws. The two pairs of angular contact ball bearings eliminate the clearance of the bearings through the adjustment of the axial dimensions of the inner bushing 5 and the outer bushing 6, and at the same time, the bearings have a certain preload force. The center shaft 3 is locked and fixed to the roller 7 near the bottom shaft end by a flat key and a locking nut. Preferably, the roller 7 adopts an electroplated diamond roller. Among them, the central axis of the center shaft 3, the driven pulley 4, the angular contact bearing 10, the inner bushing 5, the outer bushing 6 and the roller 7 are on the same axis.

[0029] The power drive assembly includes a micro motor 11, a driving pulley 12 and a synchronous belt 13. The micro motor 11 is fixed to the housing 1 by a cylindrical head hexagon socket screw. A motor cover 14 is provided outside the micro motor 11. The motor cover 14 is fixed to the housing 1 by a cross slot pan head screw. The output end of the micro motor 11 is connected to the driving pulley 12. Specifically, the driving pulley 12 is fixed to the output end of the micro motor 11 by a slotted cone end set screw; the synchronous belt 13 links the driving pulley 12 and the driven pulley 4. After the micro motor 11 is started, the motor power is transmitted to the driven pulley 4 through the driving pulley 12 and the synchronous belt 13. The rotation of the driven pulley 4 causes the rotation of the central shaft 3, and then causes the rotation of the roller 7.

[0030] In addition, the speed of the micro motor 11 can be controlled by a speed regulating device to obtain the required rotation speed of the roller shaft. The speed regulating device is a prior art and will not be described in detail here.

[0031] The rotation assembly includes a rotating seat 15, a rotating sleeve 16, and a pressure cover 17. Specifically, the rotating sleeve 16 is mounted on the rotating seat 15, and the central axes of rotation of the two are located on the same axis. At the same time, the rotating sleeve 16 is fixed to the housing 1. The rotation of the rotating sleeve 16 drives the power drive assembly and the roller 7 rotating assembly to rotate as a whole to meet the space required for workpiece clamping. The bottom end of the pressure cover 17 is radially contracted so that its bottom end face is pressed against the top of the rotating seat 15 and is embedded in the inner circumference of the rotating sleeve 16. The end face of the pressure cover 17 ensures that the rotating sleeve 16 can rotate freely on the rotating seat 15, but the axial gap between the two is extremely small, and the pressure cover 17 is locked on the rotating seat 15 by a cylindrical head hexagon socket screw. It also includes a positioning pin 18, which is fixed on the swivel seat 15. A circular arc groove (not shown in the figure) concentric with the axis of rotation is processed at a corresponding position on the swivel sleeve 16 to limit the rotation range of the swivel sleeve 16 on the swivel seat 15. In this embodiment, the rotation angle range is between 0°-90°, and the positioning pin 18 is preferably a cylindrical pin.

[0032] The rotating sleeve 16 is also provided with a locking device 19. A mounting hole is provided on one side of the rotating sleeve 16 along its radial direction. The locking device 19 includes a locking handle 20, a screw rod 21, a pressure plate 22, and a locking block 23. The locking block 23 is located in the mounting hole and abuts against one side of the rotating seat 15. One end of the screw rod 21 extends into the locking block 23 and is connected to the screw nut pair of the locking block 23, and the other end is connected to the locking handle 20 through the pressure plate 22. The locking handle 20 includes a conical pin fixed on the screw rod 21 and a conical column handle fixed on the outside of the conical pin. At the same time, one end of the locking block 23 is provided with a chamfered surface that matches the conical surface of the rotating seat 15. The rotation of the locking handle 20 drives the screw rod 21 to rotate and then drives the locking block 23 to move forward and backward along the radial direction of the rotating sleeve 16. When the locking block 23 moves toward the center of the axis, the inclined surface on the locking block 23 presses against the conical surface of the swivel seat 15; due to the action of the inclined surface, while radially pressing against the center axis of the swivel seat 15, an axial component force is generated, thereby pressing the swivel sleeve 16 axially toward the swivel seat 15 and playing a locking role. When the locking block 23 moves in the opposite direction to the center of the axis, the swivel sleeve 16 and the swivel seat 15 are loosened, and the swivel sleeve 16 can rotate on the swivel seat 15. After the grinding wheel dressing process is completed, the locking handle 20 is released to rotate the swivel sleeve 16, and the housing 1 fixed on the swivel sleeve 16 can be rotated to a certain angle and then locked, so that the axis of the roller 7 can move away from the position required for the workpiece clamping.

[0033] The radial micro-feeding assembly includes a single-axis fine-tuning platform 24, which is arranged below the rotating seat 15 and is used for radially adjusting the dresser. The single-axis fine-tuning platform 24 adopts the existing technology. For example, in a possible embodiment, the single-axis fine-tuning platform 24 includes an upper platform, a lower base plate, a locking knob, and a pair of cross roller guides (not shown in the figure) located between the upper platform and the lower base plate. The rotating seat 15 is fixed to the upper platform of the single-axis fine-tuning platform 24 by a cylindrical head hexagon socket screw. The upper platform can be operated to perform micro-feeding adjustment on the lower base plate through the roller guide through the spiral differential mechanism on the single-axis fine-tuning platform 24. After the adjustment is completed, the upper platform can be locked on the lower base plate by the locking knob. The radial feed adjustment of the upper platform drives the overall radial feed adjustment of the indexing assembly, the roller 7 rotation assembly, and the power drive assembly. That is, the radial micro-feeding assembly can facilitate the adjustment of the radial position of the roller 7 dresser on the workbench.

[0034] In addition, a dust cover 25 is also provided at the front end of the radial micro-feed assembly. Specifically, the dust cover 25 is fixed to the upper platform and the lower base plate near the end of the roller 7 through a spring washer 9 to prevent dust generated during the operation of the roller 7 from entering the interior of the machine.

[0035] The base assembly includes a base 26, and the radial micro-feed assembly is mounted on the base 26. The base 26 has multiple groups of radial micro-feed assembly mounting holes 27 with optional radial positions along its radial direction. The mounting holes 27 at appropriate positions are selected, and the lower base plate on the radial micro-feed assembly is fixed to the base 26 through cylindrical head hexagon socket screws passing through the mounting holes 27. The arrangement of multiple groups of mounting holes 27 facilitates the roller 7 trimmer to select appropriate front and rear positions on the base 26 to meet the needs of different trimming positions. Two mounting surfaces and two mounting references are arranged below the base 26, one of which is inclined at 15° and matches a mounting reference that is also inclined at 15°, so that the trimmer of the present application can be installed on a 15° inclined table, and the other horizontal mounting surface matches a vertical mounting reference, so that the trimmer can also be installed on a horizontal workbench, expanding the scope of use.

[0036] The above is only a preferred embodiment of the present invention. The protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A powered roller dresser capable of 90° rotation, characterized in that: It includes a housing, a roller rotation assembly, a power drive assembly, and a transfer assembly, wherein: The roller rotating assembly comprises a central shaft with the same central axis, a driven pulley, an inner bushing, an outer bushing and a roller, wherein the central shaft is connected to the driven pulley near the top end; the inner bushing and the outer bushing are sequentially connected to the outside of the central shaft, and the roller rotating assembly as a whole is locked and fixed in the housing through angular contact bearings at both ends of the inner bushing and the outer bushing and positioning screws, and the roller is locked and fixed near the bottom end of the central shaft; The power drive assembly includes a micro motor, a driving pulley and a synchronous belt, wherein the micro motor is fixed to the housing, the output end of the micro motor is connected to the driving pulley, and the synchronous belt links the driving pulley and the driven pulley; The rotation assembly includes a pressure cover and a swivel seat and a swivel sleeve with the same central axis. The swivel sleeve is mounted on the swivel seat and fixed on the shell. The pressure cover is locked to the top of the swivel seat and embedded in the inner circumference of the swivel sleeve. It also includes a positioning pin, which is fixed on the swivel seat. A circular arc groove concentric with the axis of rotation is machined at the corresponding position on the swivel sleeve to limit the rotation range of the swivel sleeve on the swivel seat. The rotation angle range is between 0°-90°. A locking device is also provided on the swivel sleeve, which is used to lock or loosen the swivel sleeve.

2. The 90° indexable powered roller dresser according to claim 1, characterized in that: A mounting hole is provided on one side of the rotating sleeve along its radial direction, and the locking device includes a locking handle, a screw, a pressure plate, and a locking block. The locking block is located in the mounting hole and abuts against one side of the rotating seat. One end of the screw extends into the locking block and is connected to the locking block lead screw nut pair, and the other end is connected to the locking handle via the pressure plate; at the same time, a corner of the locking block is provided with a chamfered surface matching the conical surface of the rotating seat.

3. The 90° indexable powered roller dresser according to claim 1, characterized in that: The top end of the driven pulley is locked on the central shaft by a cross slot pan head screw, an I-type hexagonal nut, and a flat washer, and a washer is further provided between the flat washer and the end face of the central shaft. The roller rotating assembly is provided with axial locking force by an I-type hexagonal nut.

4. The powered roller dresser capable of 90° indexing according to claim 1, characterized in that: The central shaft is connected with the driven pulley and the roller through a flat key.

5. The powered roller dresser capable of 90° indexing according to claim 1, characterized in that: The micro motor is provided with a motor cover outside, and the motor cover is fixed on the housing.

6. The 90° indexable powered roller dresser according to claim 1, characterized in that: The bottom end portion of the gland is radially contracted so that its bottom end face is pressed against the top end of the rotating seat, and the end face of the gland is used to ensure that the rotating sleeve can rotate freely on the rotating seat but the axial gap between the two is extremely small.

7. The 90° indexable powered roller dresser according to claim 1, characterized in that: It also includes a radial micro-feeding assembly, which includes a single-axis fine-tuning platform. The single-axis fine-tuning platform is arranged below the rotating seat and is used for radially adjusting the trimmer.

8. The powered roller dresser capable of 90° indexing according to claim 7, characterized in that: A dust cover is also provided at the front end of the radial micro-feeding component.

9. The powered roller dresser capable of 90° indexing according to claim 7, characterized in that: It also includes a base assembly, which includes a base. The radial micro-feed assembly is installed on the base, and the base is provided with multiple groups of radial micro-feed assembly installation holes with optional radial positions along its radial direction.

10. The powered roller dresser capable of 90° indexing according to claim 9, characterized in that: Two mounting surfaces and two mounting bases are arranged below the base, wherein one mounting surface inclined at 15° matches a mounting base also inclined at 15°, and the other horizontal mounting surface matches a vertical mounting base.

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