A grinding wheel dresser and a cylindrical grinding machine

Abstract

This utility model discloses a grinding wheel dresser, comprising: a connecting mechanism, a rotating base, a telescopic mechanism, a diamond pen, and a reference block. The connecting mechanism is used to connect to an external cylindrical grinding machine. The rotating base is connected to the connecting mechanism with an adjustable rotation angle. The telescopic mechanism has a mounting base connected to the rotating base and a telescopic end. The distance between the telescopic end and the rotating base is adjustable. The diamond pen is mounted on the telescopic end. The reference block is connected to the rotating base with an adjustable rotation angle. The reference block has a reference surface and several rotation angles. When the reference surface is in the reference position, each rotation angle causes the diamond pen to correspond to a chamfering angle of the grinding wheel. This grinding wheel dresser can dress the outer circumferential surface, end face, and chamfered surface of the grinding wheel, significantly improving the dressing accuracy of the grinding wheel chamfered surface.

Description

Technical Field

[0001] This utility model relates to the field of grinding wheel processing technology, and in particular to a grinding wheel dresser. Background Technology

[0002] Cylindrical grinding machines are important machine tools that use abrasive grains on the surface of a high-speed rotating grinding wheel as cutting edges for precision machining. They are widely used for material removal, obtaining accurate dimensions and high surface quality, and machining specific geometries. The machine tool mainly consists of a bed, spindle system, worktable, feed mechanism, and grinding wheel dressing device. The key working surfaces of the grinding wheel and their applications are as follows: First, the outer circumferential surface (cylindrical surface) of the grinding wheel is the main grinding area with the largest diameter and highest linear velocity. It is mainly used for grinding the outer cylindrical surface of workpieces (such as various shaft parts), surface grinding (achieved by worktable movement), and some forms of plunge grinding (e.g., machining bearing grooves). Second, the end face (side face) is the end plane of the grinding wheel. Grinding is achieved through the axial feed motion of the spindle, and it is specifically used for machining vertical stepped surfaces, end faces, shaped surfaces with complex side profiles, and narrow grooves requiring high-precision widths. Finally, chamfered surfaces generally refer to specific bevels or rounded corners formed on the outer periphery or end face edge of the grinding wheel after dressing. They are specifically used for deburring the edges of precision workpieces, machining chamfers at specified angles, and creating small-sized transition rounded corners (R-angles).

[0003] Before use, the concentricity between the outer diameter of the grinding wheel and its center hole is often poor, making it difficult to meet the requirements of static balance. Therefore, the grinding wheel's shape needs to be dressed. Furthermore, during long-term use, grinding wheels experience dulling and wear, and their geometry is also damaged. Therefore, a grinding wheel dressing device is needed to dress the grinding wheel. Existing grinding wheel dressing devices, as accessories for cylindrical grinding machines, typically only dress the outer circumference and end faces of the grinding wheel, and have problems with dressing the chamfers or achieving inaccurate dressing angles. Utility Model Content

[0004] This application provides a grinding wheel dresser to solve the technical problems of dressing the outer circumferential surface, end face, and chamfered surface of a grinding wheel. This application also discloses an external cylindrical grinding machine including the aforementioned grinding wheel dressing mechanism.

[0005] The first aspect of this application provides a grinding wheel dresser, comprising:

[0006] A connecting mechanism for connecting to an external cylindrical grinding machine;

[0007] A rotating base, with an adjustable rotation angle, is connected to the connecting mechanism.

[0008] A telescopic mechanism has a mounting base connected to a rotating base, and the telescopic mechanism has a telescopic end, the distance between the telescopic end and the rotating base being adjustable;

[0009] A diamond pen is installed on the telescopic end;

[0010] A reference block, with an adjustable rotation angle, is connected to the rotating seat. The reference block has a reference surface and several rotation angles. When the reference surface is in the reference position, each rotation angle causes the diamond pen to correspond to a chamfering angle of a grinding wheel.

[0011] The beneficial effects of the above embodiments are as follows: by installing the diamond pen on different end faces of the telescopic end, the outer peripheral surface and end face of the grinding wheel can be processed and dressed; when processing the chamfered surface of the grinding wheel, the reference block is first adjusted to the corresponding rotation angle, and then the diamond pen is roughly adjusted to the processing angle through the rotating seat. Then, by cooperating with the reference surface and the measuring tool, the rotating seat is precisely adjusted until the reference surface is in the reference position, and the diamond pen is in a more accurate chamfering angle processing position, thereby realizing the processing and dressing of the chamfered surface of the grinding wheel and significantly improving the accuracy of the chamfered surface dressing of the grinding wheel.

[0012] Based on the above embodiments, the embodiments of this application can be further improved as follows:

[0013] In one embodiment of this application: the connecting mechanism includes: a base, a first positioning member, and a first connecting member. The first connecting member is used to connect the base to the worktable of the cylindrical grinding machine. The first positioning member is disposed between the base and the worktable. The first positioning member is used to improve the accuracy and stability of the base positioning. The base is connected to the rotary seat. The beneficial effects of this step are: the cooperation of the first positioning member and the first connecting member not only achieves a rigid connection between the base and the worktable, but more importantly, effectively eliminates assembly gaps, provides high repeatability positioning accuracy, and lays a stable reference foundation for the angle adjustment of the rotary seat.

[0014] In one embodiment of this application, the connecting structure further includes a hinge and a locking member. The hinge is inserted into the base and the rotating seat, the rotating seat is rotatably fitted onto the hinge, and the locking member is connected to the hinge and locks the rotating seat to the base. The beneficial effect of this step is that the hinge provides a precise center of rotation for the rotating seat, and combined with the controllable locking force of the locking member, stepless adjustment and reliable fixation of the rotating seat's rotation angle are achieved, ensuring angular stability during the trimming process.

[0015] In one embodiment of this application, the locking member is threadedly connected to the hinge member. The advantages of this step are: the threaded connection locking method has a simple and reliable structure, is easy to apply and release locking force, and makes the angle adjustment and locking operation of the rotating seat convenient and the fastening force controllable.

[0016] In one embodiment of this application: the connecting mechanism is provided with an angle scale around the rotation axis of the rotating seat, and the rotating seat is provided with an indicator mark pointing to the angle scale. The beneficial effect of this step is that the angle scale and the indicator mark form an intuitive angle indication structure, enabling the operator to quickly and directly read the current rotation angle of the rotating seat, greatly improving the efficiency of coarse angle adjustment.

[0017] In one embodiment of this application: the telescopic mechanism further includes: a rotating shaft, a telescopic shaft, and a guide member. The rotating shaft is rotatably connected to the rotating seat, the telescopic shaft is threadedly connected to the rotating shaft, and the guide member is installed on the rotating seat and slidably inserted into the guide groove configured in the telescopic shaft. The telescopic end is located on the telescopic shaft. The beneficial effects of this step are: rotating the rotating shaft drives the telescopic shaft to move linearly via the threaded pair; the cooperation between the guide member and the guide groove ensures precise guidance of the telescopic movement, without wobbling or rotation, achieving smooth and linear telescopic adjustment of the telescopic end relative to the rotating seat, and effectively preventing the threaded pair from bearing radial off-center loads.

[0018] In one embodiment of this application, the telescopic mechanism further includes a dustproof seal disposed between the rotating seat and the telescopic shaft. The beneficial effect of this step is that the dustproof seal effectively isolates grinding debris and dust from the grinding environment from entering the telescopic mechanism, preventing them from contaminating and wearing critical transmission components, and ensuring the smoothness and precision stability of the telescopic mechanism's long-term movement.

[0019] In one embodiment of this application, the telescopic mechanism further includes a handwheel mounted on the rotating shaft. The beneficial effect of this step is that the handwheel provides an ergonomic operating end, increases the operating torque, and is easy to grip, allowing the operator to more easily and precisely control the rotation of the rotating shaft, thereby accurately adjusting the position of the telescopic end.

[0020] In one embodiment of this application, the system further includes a second connector and a second positioning member. The second connector connects the reference block to the rotating base, and the second positioning member positions the reference block at the rotation position corresponding to the rotation angle. The beneficial effects of this step are: the second connector connects the reference block to the rotating base, and the second positioning member ensures that the reference block is accurately positioned and reliably locked at a preset angle, guaranteeing the repeatability of each preset chamfer angle position and providing an accurate starting point for the final fine-tuning of the reference surface.

[0021] A second aspect of this application provides an external cylindrical grinding machine, including the aforementioned grinding wheel dresser. Attached Figure Description

[0022] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0023] Figure 1 This is a schematic diagram of the first structure of a grinding wheel dresser;

[0024] Figure 2 for Figure 1 A sectional view along the middle AA;

[0025] Figure 3 This is a schematic diagram of the second structure of the grinding wheel dresser;

[0026] Figure 4 This is a schematic diagram of the third structure of the grinding wheel dresser;

[0027] Figure 5 for Figure 4 A sectional view along the middle edge BB;

[0028] Figure 6 A schematic diagram of the grinding wheel dresser after removing the reference block;

[0029] Figure 7 This is a schematic diagram of the fourth structure of the grinding wheel dresser;

[0030] Figure 8 A schematic diagram of the working state of a grinding wheel dresser for dressing a 30° chamfered surface.

[0031] Among them, 1 is the connecting mechanism, 101 is the base, 102 is the first positioning component, 103 is the first connecting component, 104 is the hinge component, 105 is the locking component, 106 is the angle scale, 2 is the rotating seat, 201 is the indicator mark, 202 is the housing, 203 is the bearing seat, 204 is the rotating hole, 205 is the connecting hole, 206 is the positioning hole, 3 is the telescopic mechanism, 301 is the rotating shaft, 302 is the telescopic shaft, 303 is the guide component, 304 is the dustproof seal component, 305 is the handwheel, 306 is the connecting block, 4 is the diamond pen, 5 is the reference block, 501 is the reference surface, 502 is the first positioning hole, 503 is the second positioning hole, 504 is the third positioning hole, 6 is the second connecting component, and 7 is the second positioning component. Detailed Implementation

[0032] In this application, unless otherwise expressly specified and limited, the terminology used should be interpreted broadly. For example, a connection can be a fixed connection, a detachable connection, or an integral part; it can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of different terms in this utility model according to the specific circumstances, and the scope of the specific meaning should be limited to achieving the function of this application.

[0033] In the description of this application, it should be understood that the directional terms or positional relationships described are based on the orientation or positional relationships shown in the accompanying drawings, or based on the orientation or positional relationships in actual use, and are only for the purpose of facilitating the description of the contents of this application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0034] Example 1

[0035] like Figure 1 , 7 As shown, a grinding wheel dresser includes: a connecting mechanism 1, a rotating seat 2, a telescopic mechanism 3, a diamond pen 4, and a reference block 5. The connecting mechanism 1 is used to connect to an external cylindrical grinding machine. The rotating seat 2 is connected to the connecting mechanism 1 with an adjustable rotation angle. The telescopic mechanism 3 has a mounting base connected to the rotating seat 2. The telescopic mechanism 3 has a telescopic end, and the distance between the telescopic end and the rotating seat 2 is adjustable. The diamond pen 4 is mounted on the telescopic end. The reference block 5 is connected to the rotating seat 2 with an adjustable rotation angle. The reference block 5 has a reference surface 501 and several rotation angles. When the reference surface 501 is in the reference position, each rotation angle causes the diamond pen 4 to correspond to a chamfering angle of a grinding wheel.

[0036] Specifically, such as Figure 2 As shown, the connecting mechanism 1 includes: a base 101, a first positioning member 102, and a first connecting member 103. The first connecting member 103 is used to connect the base 101 to the worktable of the cylindrical grinding machine. The first positioning member 102 is disposed between the base 101 and the worktable. The first positioning member 102 is used to improve the positioning accuracy and stability of the base 101. The base 101 is connected to the rotary seat 2.

[0037] Specifically, the base 101 is mounted on the mounting seat configured on the worktable of the cylindrical grinding machine. The mounting seat is mounted on the worktable, and the direction of movement of the worktable is defined as longitudinal. The direction perpendicular to the longitudinal direction and parallel to the horizontal plane is defined as transverse. The T-slot extends transversely. The first connecting member 103 is a T-slot bolt, which is slidably inserted into the T-slot and its threaded end passes through the base 101 and is connected to the nut. The first positioning member 102 is a positioning block. There are two positioning blocks, which are symmetrically arranged on both sides of the T-slot bolt. The positioning blocks are slidably inserted into the narrow groove at the upper end of the T-slot. The gap between the positioning blocks and the T-slot bolt and the T-slot is small. The positioning blocks make the connection of the base 101 more stable.

[0038] Specifically, such as Figure 2As shown, the connection structure further includes: a hinge 104 and a locking member 105. The hinge 104 is inserted into the base 101 and the rotating seat 2. The rotating seat 2 is rotatably fitted onto the hinge 104. The locking member 105 is connected to the hinge 104 and locks the rotating seat 2 to the base 101.

[0039] Specifically, such as Figure 2 As shown, the locking member 105 is threadedly connected to the hinge member 104.

[0040] Specifically, such as Figure 2 As shown, the hinge 104 uses a bolt, the locking part 105 uses a nut, and the lower end of the rotating seat 2 has a disc-shaped structure. The bolt passes through the disc-shaped structure and is connected to the nut. When it is necessary to rotate the rotating seat 2, the nut can be loosened.

[0041] Specifically, such as Figure 3 As shown, the connecting mechanism 1 is provided with an angle scale 106 around the rotation axis of the rotating seat 2, and the rotating seat 2 is provided with an indicator mark 201, which points to the angle scale 106.

[0042] Specifically, such as Figure 4 , 5 As shown, the telescopic mechanism 3 further includes: a rotating shaft 301, a telescopic shaft 302, and a guide member 303. The rotating shaft 301 is rotatably connected to the rotating seat 2, the telescopic shaft 302 is threadedly connected to the rotating shaft 301, the guide member 303 is installed on the rotating seat 2 and slidably inserted into the guide groove configured in the telescopic shaft 302, and the telescopic end is located on the telescopic shaft 302.

[0043] Specifically, such as Figure 5 As shown, the telescopic mechanism 3 further includes a dustproof seal 304, which is disposed between the rotating seat 2 and the telescopic shaft 302.

[0044] Specifically, such as Figure 5 As shown, the telescopic mechanism 3 further includes a handwheel 305, which is mounted on the rotating shaft 301.

[0045] Specifically, such as Figure 5As shown, the upper end of the rotating seat 2 has a housing 202, one end of which is connected to a bearing seat 203. A bearing is installed in the bearing seat 203. One end of the rotating shaft 301 is inserted into the inner ring of the bearing and extends to the outside of the bearing seat 203. A handwheel 305 is installed thereon. The rotating shaft 301 is stably positioned in the bearing seat 203 by the handwheel 305 and the shoulder of the rotating shaft 301. The rotating shaft 301 has a threaded section located in the housing 202. The telescopic shaft 302 has a sleeve-like structure. The inner hole of the telescopic shaft 302 has an internal thread that is threaded to the threaded section. A guide groove is opened axially on the outer periphery of the telescopic shaft 302. The guide member 303 is threadedly connected to the threaded hole opened in the housing 202. The threaded hole and the guide groove are connected. The guide member 303 is inserted into the guide groove to prevent the telescopic shaft 302 from rotating. The housing 202 has a sealing ring groove at the end away from the bearing seat 203. The dustproof seal 304 is made of dustproof polyurethane sealing ring. The dustproof seal is fitted onto the telescopic shaft 302 and inserted into the sealing ring groove. The front end of the telescopic shaft 302 has a connecting block 306. The three sides of the connecting block 306 are the three mounting surfaces of the diamond pen 4. Each mounting surface has a hole for inserting the diamond pen 4. The upper end of the connecting block 306 has a threaded hole that communicates with the hole. The threaded hole is threaded with a bolt. The bolt presses the end of the diamond pen 4 located in the hole, so that the diamond pen 4 is stably positioned.

[0046] Specifically, such as Figure 3 As shown, the grinding wheel dresser also includes: a second connector 6 and a second positioning component 7. The second connector 6 connects the reference block 5 to the rotating seat 2, and the second positioning component positions the reference block 5 at the rotation position corresponding to the rotation angle.

[0047] Specifically, such as Figure 7 As shown, the reference block 5 has three rotation angles, corresponding to three rotation positions, which in turn correspond to three chamfer positions of the grinding wheel: a 30° chamfer position, a 45° chamfer position, and a 60° chamfer position. The reference block 5 has three positioning holes corresponding to the above chamfer angles: the first positioning hole 502 corresponds to the 30° chamfer position, the second positioning hole 503 corresponds to the 45° chamfer position, and the third positioning hole 504 corresponds to the 60° chamfer position. By using the first positioning hole 502, the second positioning hole 503, and the third positioning hole 504 in conjunction with the two side mounting surfaces of the connecting block 306 to install the diamond pen 4, the chamfer angles can be adjusted to six angles, namely ±30°, ±45°, and ±60°.

[0048] Specifically, such as Figure 6 , 7As shown, the upper end face of the housing 202 is provided with a rotating hole 204, a connecting hole 205, and a positioning hole 206. A pin passes through the reference block 5 and is inserted into the rotating hole 204. The rotation axis of the reference block 5 is determined by the pin. The second connecting member 6 is a bolt. The second connecting member 6 passes through the arc-shaped hole opened around the axis of the rotating hole 204 in the reference block 5 and is threadedly connected to the connecting hole 205. The second positioning member 7 is a pin. The second positioning member 7 passes through the first positioning hole 502, the second positioning hole 503, or the third positioning hole 504 and is inserted into the positioning hole 206. The reference surface 501 is the surface facing the grinding wheel direction.

[0049] The method of using this type of grinding wheel dresser is as follows:

[0050] (1) Dressing the outer circumference of the grinding wheel

[0051] The diamond pen 4 is installed on the end face of the connecting block 306 facing the grinding wheel. The grinding wheel rotates, and by rotating the handwheel 305, the diamond pen 4 is positioned adjacent to the outer circumference of the grinding wheel. The worktable drives the grinding wheel dresser to move, so that the diamond pen 4 contacts the outer circumference of the high-speed rotating grinding wheel. The diamond pen 4 moves along the axis of the grinding wheel, thereby achieving the dressing of the outer circumference of the grinding wheel.

[0052] (2) Dress the outer end face of the grinding wheel

[0053] The diamond pen 4 is installed on the other side of the connecting block 306. The grinding wheel rotates while the worktable remains stationary. The operator rotates the handwheel 305 so that the diamond pen 4 contacts the corresponding outer end face of the grinding wheel and moves radially along the grinding wheel during the high-speed rotation of the grinding wheel, thereby achieving the dressing of one outer end face of the grinding wheel.

[0054] Dressing the other outer end face of the grinding wheel simply requires moving the diamond pen 4 to the last mounting surface and repeating the above process to dress both outer end faces of the grinding wheel.

[0055] (3) Dress the chamfered surface of the grinding wheel

[0056] Taking a 30° chamfer position as an example, insert the second positioning piece 7 into the first positioning hole 502, rotate the rotary seat 2 so that the indicator mark 201 rotates to a 60° angle, thereby achieving coarse adjustment of the angle; attach the magnetic base of the dial indicator to the grinding wheel frame of the cylindrical grinding machine so that the measuring head of the dial indicator contacts the reference surface 501, the worktable drives the reference block 5 to move, observe the dial indicator runout, if there is no runout or the runout is within the threshold (the threshold is set according to actual needs), then the diamond pen 4 is in the accurate adjustment angle. If the runout exceeds the threshold, rotate the rotary seat 2 according to the runout adaptability, and then measure again until the runout of the dial indicator pointer meets the requirements, thereby achieving precise adjustment of the angle; then lock the rotary seat 2, move the diamond pen 4 to the edge of the grinding wheel to be dressed, the grinding wheel rotates at high speed, rotate the handwheel, the telescopic shaft moves along the adjustment angle, the diamond pen contacts the edge of the grinding wheel, thereby achieving the dressing of one chamfer surface of the grinding wheel;

[0057] To dress the other chamfered surface of the grinding wheel, follow the steps described above: rotate the rotating seat 2 so that the indicator mark 201 is aligned with the other 60°, then install the diamond pen 4 on the corresponding other side, fine-tune the diamond pen 4 to the required angle, and then perform the dressing.

[0058] Example 2

[0059] An external cylindrical grinding machine includes the grinding wheel dresser disclosed in Embodiment 1.

[0060] The above are merely embodiments of this utility model. Commonly known structures and characteristics are not described in detail here. Those skilled in the art are aware of all common technical knowledge in the field prior to the application date or priority date, are aware of all existing technologies in that field, and have the ability to apply conventional experimental methods prior to that date. Those skilled in the art can, based on the guidance provided in this application, improve and implement this solution in combination with their own capabilities. Some typical known structures or methods should not be obstacles for those skilled in the art to implement this application. It should be noted that those skilled in the art can make several modifications and improvements without departing from the structure of this utility model. These should also be considered within the scope of protection of this utility model, and will not affect the effectiveness of the implementation of this utility model or the practicality of the patent.

Claims

1. A grinding wheel dresser characterized by, include: A connecting mechanism for connecting to an external cylindrical grinding machine; A rotating base, with an adjustable rotation angle, is connected to the connecting mechanism. A telescopic mechanism has a mounting base connected to a rotating base, and the telescopic mechanism has a telescopic end, the distance between the telescopic end and the rotating base being adjustable; A diamond pen is installed on the telescopic end; A reference block, with an adjustable rotation angle, is connected to the rotating seat. The reference block has a reference surface and several rotation angles. When the reference surface is in the reference position, each rotation angle causes the diamond pen to correspond to a chamfering angle of a grinding wheel.

2. The grinding wheel dresser according to claim 1, wherein The connecting mechanism includes: a base, a first positioning member, and a first connecting member. The first connecting member is used to connect the base to the worktable of the cylindrical grinding machine. The first positioning member is disposed between the base and the worktable. The first positioning member is used to improve the accuracy and stability of the base positioning. The base is connected to the rotary table.

3. The grinding wheel dresser according to claim 2, characterized in that, The connecting mechanism further includes: a hinge and a locking member. The hinge is inserted into the base and the rotating seat. The rotating seat is rotatably fitted onto the hinge. The locking member is connected to the hinge and locks the rotating seat to the base.

4. The grinding wheel dresser according to claim 3, wherein The locking element is threadedly connected to the hinge element.

5. The grinder as set forth in claim 1, wherein The connecting mechanism is provided with an angle scale around the rotation axis of the rotating seat, and the rotating seat is provided with an indicator mark that points to the angle scale.

6. The grinder as set forth in claim 1, wherein The telescopic mechanism further includes: a rotating shaft, a telescopic shaft, and a guide member. The rotating shaft is rotatably connected to the rotating seat, the telescopic shaft is threadedly connected to the rotating shaft, the guide member is installed on the rotating seat and slidably inserted into the guide groove configured in the telescopic shaft, and the telescopic end is located on the telescopic shaft.

7. The grinding wheel dresser according to claim 6, wherein The telescopic mechanism further includes a dustproof seal, which is disposed between the rotating seat and the telescopic shaft.

8. The grinding wheel dresser of claim 6, wherein, The telescopic mechanism further includes a handwheel, which is mounted on the rotating shaft.

9. The grinding wheel dresser according to claim 1, characterized in that, Also includes: The second connector and the second positioning component are provided. The second connector connects the reference block to the rotating seat, and the second positioning component positions the reference block at the rotation position corresponding to the rotation angle.

10. An external cylindrical grinding machine, characterized in that, The grinding wheel dresser includes any one of claims 1-9.

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