High-precision grinding machine grinding wheel assembling structure

Abstract

The high-precision grinding machine grinding wheel assembling structure is applied to the technical field of grinding machine equipment and comprises a main shaft, a chuck and a grinding wheel, the main shaft comprises a cylindrical mounting part, a mounting hole matched with the mounting part is formed in the chuck, the chuck is arranged on the mounting part in a sleeving mode through the mounting hole, and the grinding wheel is arranged on the chuck. The grinding wheel is arranged on the chuck, then the chuck sleeves the cylindrical mounting part through the cylindrical mounting hole, the machining difficulty of the cylindrical surface and the straight hole is low, the machining precision is high, the positioning precision is guaranteed, and the universality is very high.

Description

Technical Field

[0001] The present application relates to the technical field of grinding machine equipment, and in particular to a high-precision grinding wheel assembly structure for a grinding machine. Background Art

[0002] A grinder is a machine tool that uses abrasive tools to grind the surface of a workpiece. Most grinders use high-speed rotating grinding wheels for grinding.

[0003] The grinding wheel and the spindle are important components of a grinding machine, wherein the grinding wheel is mounted on the spindle through a grinding wheel chuck. The assembly connection between the grinding wheel chuck and the spindle requires very high precision. In the prior art, the grinding wheel chuck and the spindle are connected by a conical surface positioning connection. The above installation method requires a conical hole to be opened on the grinding wheel chuck and a conical surface to be arranged on the annular surface of the spindle to match the conical hole. Although the conical surface positioning precision is high, the conical surface machining is difficult, the taper is difficult to control, and inaccurate machining may cause the line contact between the grinding wheel chuck and the spindle to change to point contact, affecting the positioning precision, and the conical surface positioning connection is not very versatile.

[0004] In view of this, a high-precision grinding wheel assembly structure is urgently needed to solve the above problems. Summary of the invention

[0005] In order to help solve the problems existing in the prior art, the present application provides a high-precision grinding wheel assembly structure for a grinding machine, which adopts the following technical solution: it includes: a main shaft, a chuck, and a grinding wheel, the main shaft includes a cylindrical mounting portion, the chuck is provided with a mounting hole adapted to the mounting portion, and is sleeved on the mounting portion through the mounting hole, and the grinding wheel is arranged on the chuck.

[0006] Through the above technical solution, the chuck is mounted on the cylindrical mounting part through the cylindrical mounting hole. The cylindrical surface and the straight hole are easy to process, the processing accuracy is high, the matching accuracy and positioning accuracy are guaranteed, and the versatility is strong.

[0007] In a specific possible implementation manner, the main shaft further includes a first connecting portion and a first fixing portion which are sequentially arranged at one end of the mounting portion, and the first connecting portion and the first fixing portion are both coaxially arranged with the mounting portion.

[0008] According to the technical solution, when installing the main shaft, the main shaft is installed on the grinding machine through the first fixing part.

[0009] In a specific possible implementation manner, the diameter of the first engaging portion is greater than the diameter of the first fixing portion.

[0010] Through the above technical solution, a positioning surface is formed between the first connecting portion and the first fixing portion, which facilitates positioning of the main shaft when the main shaft is installed.

[0011] In a specific possible implementation manner, the diameter of the first engaging portion is greater than the diameter of the mounting portion.

[0012] Through the above technical solution, a positioning surface is formed between the first connecting portion and the mounting portion, so that when the chuck is installed, it is easy to position the chuck, thereby reducing the difficulty of installation and improving the installation efficiency.

[0013] In a specific possible implementation manner, the main shaft further includes a second connecting portion and a second fixing portion which are sequentially arranged at an end of the mounting portion away from the first fixing portion, and the second connecting portion and the second fixing portion are coaxially arranged with the mounting portion.

[0014] Through the above technical solution, a support assembly can be selected to support the second mounting portion through the second mounting portion, thereby achieving the purpose of supporting the main shaft suspension end.

[0015] In a specific possible implementation manner, a limiting member for limiting the movement of the chuck is provided on an annular surface at one end of the mounting portion close to the second fixing portion.

[0016] Through the above technical solution, the limiting member is used to limit the movement of the chuck, thereby achieving the purpose of fixing the chuck.

[0017] In a specific possible implementation manner, the limiting member includes a plurality of limiting bolts arranged in a circumference, and the limiting bolts are threadedly connected to the mounting portion.

[0018] Through the above technical solution, a plurality of limiting bolts are provided to cooperate with the positioning surface formed by the first connecting portion and the first fixing portion to clamp and fix the chuck, and the plurality of limiting bolts are threadedly connected to the main shaft, which is convenient for installation and disassembly.

[0019] In a specific possible implementation manner, the diameters of the second connecting portion and the second fixing portion are both smaller than the diameter of the mounting portion.

[0020] Through the above technical solution, the diameters of the second connecting portion and the second fixing portion are both smaller than the diameter of the mounting portion, so that when the chuck is installed, the chuck can be sleeved on the main shaft.

[0021] In a specific possible implementation scheme, the chuck includes a mounting sleeve, an annular fixed clamping plate sleeved on one end of the mounting sleeve, and an annular movable clamping plate sleeved on the other end of the mounting sleeve, the grinding wheel is arranged between the annular fixed clamping plate and the annular movable clamping plate, and the inner cavity of the mounting sleeve is a mounting hole.

[0022] Through the above technical solution, the grinding wheel is clamped between the annular fixed clamping plate and the annular movable clamping plate by sleeve-mounting the mounting sleeve on the mounting portion of the main shaft.

[0023] In a specific possible implementation manner, the annular movable clamp is fixed to the mounting sleeve by bolts.

[0024] Through the above technical solution, the annular movable splint is fixed to the mounting sleeve by bolts, so that the annular movable splint is easy to install and disassemble, and the grinding wheel is easy to install and replace.

[0025] In summary, the grinding wheel is assembled by placing the grinding wheel on the chuck, and then the chuck is mounted on the cylindrical mounting part through the cylindrical mounting hole. The cylindrical surface and the straight hole have low processing difficulty, high processing accuracy, guaranteed positioning accuracy, and strong versatility. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present application.

[0027] Figure numerals: 1. spindle; 11. mounting portion; 12. first connecting portion; 13. first fixing portion; 14. second connecting portion; 15. second fixing portion; 2. chuck; 21. mounting sleeve; 22. annular fixed splint; 23. annular movable splint; 3. grinding wheel; 4. limit bolt. DETAILED DESCRIPTION

[0028] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present application.

[0029] It should be noted that the terms "including" and "having" and any variations thereof in the specification and claims of the present application and the above-mentioned drawings are intended to cover non-exclusive inclusions. For example, a process, method, apparatus, product or equipment comprising a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or equipment.

[0030] The following is combined with Figure 1 This application is further described in detail.

[0031] Reference Figure 1A high-precision grinding wheel assembly structure for a grinding machine includes: a main shaft 1, a chuck 2, and a grinding wheel 3. The main shaft 1 includes a cylindrical mounting portion 11. The chuck 2 is provided with a cylindrical mounting hole adapted to the mounting portion 11, and is sleeved on the mounting portion 11 through the mounting hole. The grinding wheel 3 is arranged on the chuck 2. In this way, the chuck 2 is sleeved on the cylindrical mounting portion 11 through the cylindrical mounting hole, thereby completing the assembly of the grinding wheel 3. The cylindrical surface and the straight hole have low difficulty in processing, high processing accuracy, guaranteed positioning accuracy, and strong versatility.

[0032] Reference Figure 1 The spindle 1 also includes a first connecting portion 12 and a first fixing portion 13 sequentially arranged at one end of the mounting portion 11, and the first connecting portion 12 and the first fixing portion 13 are both coaxially arranged with the mounting portion 11. The diameter of the first connecting portion 12 is greater than the diameter of the first fixing portion 13. The diameter of the first connecting portion 12 is greater than the diameter of the mounting portion 11, so that when installing, the spindle is installed on the grinding machine through the first fixing portion 13. Since the diameter of the first connecting portion 12 is greater than the diameter of the first fixing portion 13, a positioning surface is formed between the first connecting portion 12 and the first fixing portion 13, which facilitates the positioning of the spindle 1 when installing the spindle 1, and the diameter of the first connecting portion 12 is greater than the diameter of the mounting portion 11, so that a positioning surface is formed between the first connecting portion 12 and the mounting portion 11, which facilitates the positioning of the chuck 2 when installing the chuck 2, reduces the difficulty of installation, and improves the installation efficiency.

[0033] Reference Figure 1 The spindle 1 also includes a second connecting portion 14 and a second fixing portion 15 which are sequentially arranged at an end of the mounting portion 11 away from the first fixing portion 13. The second connecting portion 14 and the second fixing portion 15 are coaxially arranged with the mounting portion 11. The diameters of the second connecting portion 14 and the second fixing portion 15 are both smaller than the diameter of the mounting portion 11. In this way, the diameters of the second connecting portion 14 and the second fixing portion 15 are both smaller than the diameter of the mounting portion 11, so that when the chuck 2 is installed, it is convenient to put the chuck 2 on the spindle 1.

[0034] Reference Figure 1 A limiting member that limits the movement of the chuck 2 is provided on the annular surface of one end of the mounting portion 11 close to the second fixing portion 15, and the limiting member includes a plurality of limiting bolts 4 arranged in a circle, and the limiting bolts 4 are threadedly connected to the mounting portion 11. In this way, by setting a plurality of limiting bolts 4 to cooperate with the positioning surface formed by the first connecting portion 12 and the first fixing portion 13, the chuck 2 is clamped and fixed, and the plurality of limiting bolts 4 are threadedly connected to the main shaft 1, which is convenient for installation and disassembly.

[0035] Reference Figure 1The chuck 2 includes a mounting sleeve 21, an annular fixed clamping plate 22 mounted on one end of the mounting sleeve 21, and an annular movable clamping plate 23 mounted on the other end of the mounting sleeve 21. The grinding wheel 3 is arranged between the annular fixed clamping plate 22 and the annular movable clamping plate 23. The inner cavity of the mounting sleeve 21 is a mounting hole. The annular movable clamping plate 23 is fixed to the mounting sleeve 21 by bolts. In this way, the mounting sleeve 21 is mounted on the mounting portion 11 of the spindle 1 to clamp the grinding wheel 3 between the annular fixed clamping plate 22 and the annular movable clamping plate 23, and the annular movable clamping plate 23 is fixed to the mounting sleeve 21 by bolts, so that the annular movable clamping plate 23 is easy to install and disassemble, and easy to install and replace the grinding wheel 3.

[0036] In summary: the chuck 2 is mounted on the cylindrical mounting portion 11 through the cylindrical mounting hole, thereby completing the assembly of the grinding wheel 3, and the cylindrical surface and the straight hole are easy to process, the processing accuracy is high, the positioning accuracy is guaranteed, and the versatility is very strong.

[0037] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed. However, as long as they are within the scope of the claims of the present invention, they are protected by the patent law.

Claims

1. A high-precision grinding wheel assembly structure, characterized in that: include: A main shaft (1), a chuck (2), and a grinding wheel (3), wherein the main shaft (1) comprises a cylindrical mounting portion (11), the chuck (2) is provided with a mounting hole adapted to the mounting portion (11), and is sleeved on the mounting portion (11) through the mounting hole, and the grinding wheel (3) is arranged on the chuck (2).

2. The high-precision grinding wheel assembly structure of claim 1, characterized in that: The main shaft (1) further comprises a first connecting portion (12) and a first fixing portion (13) which are sequentially arranged at one end of the mounting portion (11); the first connecting portion (12) and the first fixing portion (13) are both coaxially arranged with the mounting portion (11).

3. The high-precision grinding wheel assembly structure of claim 2, characterized in that: The diameter of the first connecting portion (12) is greater than the diameter of the first fixing portion (13).

4. The high-precision grinding wheel assembly structure of claim 2, characterized in that: The diameter of the first connecting portion (12) is greater than the diameter of the mounting portion (11).

5. The high-precision grinding wheel assembly structure of claim 4, characterized in that: The main shaft (1) further comprises a second connecting portion (14) and a second fixing portion (15) which are sequentially arranged at an end of the mounting portion (11) away from the first fixing portion (13); the second connecting portion (14) and the second fixing portion (15) are coaxially arranged with the mounting portion (11).

6. The high-precision grinding wheel assembly structure of claim 5, characterized in that: A limiting member for limiting the movement of the chuck (2) is provided on an annular surface at one end of the mounting portion (11) close to the second fixing portion (15).

7. The high-precision grinding wheel assembly structure of claim 6, characterized in that: The limiting member comprises a plurality of limiting bolts (4) arranged in a circumference, and the limiting bolts (4) are threadedly connected to the mounting portion (11).

8. The high-precision grinding wheel assembly structure of claim 5, characterized in that: The diameters of the second connecting portion (14) and the second fixing portion (15) are both smaller than the diameter of the mounting portion (11).

9. The high-precision grinding wheel assembly structure of claim 1, characterized in that: The chuck (2) comprises a mounting sleeve (21), an annular fixed clamping plate (22) sleeved on one end of the mounting sleeve (21), and an annular movable clamping plate (23) sleeved on the other end of the mounting sleeve (21); the grinding wheel (3) is arranged between the annular fixed clamping plate (22) and the annular movable clamping plate (23); and the inner cavity of the mounting sleeve (21) is a mounting hole.

10. The high-precision grinding wheel assembly structure of claim 9, characterized in that: The annular movable clamping plate (23) is fixed on the mounting sleeve (21) by means of bolts.

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