High-precision grinding wheel mounting structure of grinding machine

Abstract

The utility model relates to a high-precision grinding machine grinding wheel mounting structure which is applied to the technical field of grinding machine equipment and comprises a mounting sleeve arranged on a grinding machine, a main shaft, a grinding wheel and an end supporting piece, the main shaft comprises a fixing section, a mounting section and a supporting section which are sequentially arranged from one end of the main shaft, and one end of the fixing section is arranged in the mounting sleeve in a penetrating mode; the grinding wheel is arranged on the mounting section in a sleeving manner; the end supporting piece comprises a supporting table arranged on one side of the grinding machine and an end installation lantern ring arranged on the supporting table, and the suspension end of the supporting section is arranged in the installation lantern ring in a penetrating mode. The suspension end of the main shaft is supported through the supporting table and the mounting lantern ring, and when a large-size grinding wheel is mounted on the main shaft, due to the fact that the two ends of the main shaft are supported, when the large-size grinding wheel works, the radial run-out of the main shaft is small, the radial run-out of the grinding wheel is small, and the precision of machined workpieces is improved.

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 mounting 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 the grinding machine. In the prior art, one end of the spindle is installed on the grinding machine through the housing on the grinding machine, and then the grinding wheel is fixed to the suspended end (suspension beam) of the spindle. When the grinding wheel size is large (the outer diameter of the grinding wheel exceeds 400 mm), the grinding wheel is very heavy. When the above-mentioned installation method of the grinding wheel and the spindle is adopted, the radial runout of the grinding wheel is large when the grinding wheel is working, which affects the processing accuracy of the workpiece.

[0004] In view of this, a high-precision grinding wheel mounting 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 installation structure for a grinding machine, which adopts the following technical solution: comprising: an installation sleeve, a main shaft, a grinding wheel and an end support member arranged on the grinding machine, wherein the main shaft comprises a fixed section, a mounting section and a supporting section arranged in sequence at one end of the main shaft, one end of the fixed section is inserted into the installation sleeve, and the grinding wheel is sleeved on the mounting section;

[0006] The end support member comprises a support platform arranged on one side of the grinding machine and an end mounting collar arranged on the support platform, and the suspended end of the support section is inserted into the mounting collar.

[0007] Through the above technical solution, the support table and the mounting ring support the suspended end of the spindle. When a large-sized grinding wheel is installed on the spindle, since both ends of the spindle are supported, the radial runout of the spindle is small when the large-sized grinding wheel is working, which makes the radial runout of the grinding wheel small and improves the accuracy of the processed workpiece.

[0008] In a specific possible implementation scheme, a plurality of first bearings are arranged in series in the mounting ring, and the suspended end of the support section is inserted into the plurality of first bearings.

[0009] Through the above technical solution, the arrangement of multiple first bearings makes the main shaft rotate more smoothly and stably.

[0010] In a specific implementation manner, four first bearings are provided, and the four first bearings are divided into two first bearing assemblies in turn, and the first bearings of the two first bearing assemblies are arranged back to back.

[0011] Through the above technical solution, a four-way configuration of four first bearings is adopted, which can withstand radial loads and axial loads in two directions. The maximum axial load that can be sustained is greater and the deformation resistance is stronger.

[0012] In a specific implementation scheme, a first slot is provided on the support section, the first slot is used to fix the inner rings of the four first bearings, and a second slot is provided in the mounting ring, the second slot is used to fix the outer rings of the four first bearings.

[0013] Through the above technical scheme, after a long period of processing and production, the first bearing is worn and a gap is generated between the raceway and the ball. The main shaft can be displaced axially to make the outer ring and the inner ring of the first bearing relatively displaced, so that the bearing balls are close to the raceway again, and the first bearing can work normally, thereby increasing the service life of the first bearing and further improving the production and processing efficiency of the machine tool.

[0014] In a specific possible implementation scheme, the support segment is provided with a first step surface facing away from the fixing segment, and the annular surface of the support segment is provided with a plurality of fixing bolts, and the plurality of fixing bolts and the first step surface form a first clamping groove.

[0015] Through the above technical solution, a plurality of fixing bolts and the first step surface are used to form a clamping space for clamping the inner rings of the four first bearings.

[0016] In a specific possible implementation manner, the end support member further comprises an end cover arranged on one side of the mounting collar, the inner cavity annular surface of the mounting collar is provided with a ring plate, and the ring plate and the end cover form a second slot.

[0017] Through the above technical solution, the end cover and the ring plate are used to fix the outer rings of the four first bearings.

[0018] In a specific possible implementation manner, the end cover is fixed to the mounting collar by bolts.

[0019] The above technical solution makes it easy to install and remove the end cover.

[0020] In a specific possible implementation manner, a chuck for fixing a grinding wheel is sleeved on the mounting section, and the grinding wheel is arranged on the chuck.

[0021] Through the above technical solution, a chuck is adopted to facilitate fixing the grinding wheel on the main shaft.

[0022] In a specific possible implementation manner, a plurality of second bearings are disposed on a side of the mounting sleeve close to the end support member.

[0023] Through the above technical solution, multiple second bearings are provided to support the inner end of the fixed section, so that the stability of the main shaft is further improved.

[0024] In a specific possible implementation manner, a plurality of third bearings are provided on a side of the mounting sleeve away from the end support member.

[0025] Through the above technical solution, a plurality of third bearings are provided to support the suspension end of the fixed section, so that the stability of the main shaft is further improved.

[0026] In summary, the suspended end of the spindle is supported by the support table and the mounting ring. When a large-sized grinding wheel is installed on the spindle, since both ends of the spindle are supported, the radial runout of the spindle is small when the large-sized grinding wheel is working, which makes the radial runout of the grinding wheel small and improves the accuracy of the processed workpiece. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present application.

[0028] Figure numerals: 1. mounting sleeve; 2. main shaft; 21. first step surface; 22. fixing bolt; 23. chuck; 3. grinding wheel; 4. support table; 5. mounting ring; 51. ring plate; 6. first bearing; 7. end cover; 8. second bearing; 9. third bearing. DETAILED DESCRIPTION

[0029] In order to enable those skilled in the art to better understand the present application, the technical solutions 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 this application.

[0030] 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.

[0031] The following is combined with Figure 1 This application is further described in detail.

[0032] Reference Figure 1A high-precision grinding wheel installation structure for a grinding machine comprises: an installation sleeve 1, a main shaft 2, a grinding wheel 3 and an end support member arranged on the grinding machine, the main shaft 2 comprises a fixed section, a mounting section and a supporting section arranged in sequence at one end of the main shaft 2, one end of the fixed section is inserted into the installation sleeve 1, and a chuck 23 for fixing the grinding wheel 3 is sleeved on the mounting section, and the grinding wheel 3 is arranged on the chuck 23; the end support member comprises a support platform 4 arranged on one side of the grinding machine, and an end mounting collar 5 arranged on the support platform 4, and the suspended end of the supporting section is inserted into the mounting collar 5, so that the suspended end of the main shaft 2 is supported by the support platform 4 and the mounting collar 5. When the large-sized grinding wheel 3 is installed on the main shaft 2, since both ends of the main shaft 2 are supported, the fixed end and the supporting end of the main shaft 2 are evenly stressed. Therefore, when the large-sized grinding wheel 3 is working, the radial runout of the main shaft 2 is small, so that the radial runout of the grinding wheel 3 is small, the working accuracy of the grinding wheel is improved, and thus the accuracy of the processed workpiece is improved.

[0033] Reference Figure 1 A plurality of first bearings 6 are arranged in series in the mounting ring 5, and the suspended end of the support section is penetrated in the plurality of first bearings 6. In this embodiment, four first bearings 6 are arranged, and the four first bearings 6 are divided into two first bearing assemblies in turn. The first bearings 6 (angular contact ball bearings) of the two first bearing assemblies are arranged back to back in series in pairs. In this way, the four first bearings 6 are arranged in a quadruple configuration, which can withstand radial loads and axial loads in two directions. Under the condition of the same internal clearance, the preload and stiffness are twice that of the configuration, and the maximum axial load that can be withstood is greater.

[0034] Reference Figure 1 A first slot is provided on the support section, and the first slot is used to fix the inner rings of the four first bearings 6. A second slot is provided in the mounting ring 5, and the second slot is used to fix the outer rings of the four first bearings 6. A first step surface 21 facing away from the fixing section is provided on the support section, and a plurality of fixing bolts 22 are circumferentially provided on the annular surface of the support section (the fixing bolts 22 are threadedly connected with the main shaft 2 for easy installation and removal). The plurality of fixing bolts 22 and the first step surface 21 form a first slot, and the end support member also includes an end cover 7 provided on one side of the mounting ring 5. A ring plate 51 is provided on the inner cavity annular surface of the mounting ring 5, and the ring plate 51 and the end cover 7 form a second slot. In this way, the main shaft 2 can be supported for a long time for processing and production, thereby further improving the production and processing efficiency of the machine tool.

[0035] Reference Figure 1 The end cover 7 is fixed to the mounting collar 5 by bolts, so that the end cover 7 is easy to install and remove.

[0036] Reference Figure 1A plurality of second bearings 8 are arranged on the side of the mounting sleeve 1 close to the end support, and a plurality of third bearings 9 are arranged on the side of the mounting sleeve 1 away from the end support. In this way, the two ends of the main shaft 2 in the mounting sleeve 1 are supported respectively by arranging a plurality of second bearings 8 and a plurality of third bearings 9, so as to further improve the stability of the main shaft 2.

[0037] In summary: the suspended end of the spindle 2 is supported by the support table 4 and the mounting ring 5. When the large-sized grinding wheel 3 is installed on the spindle 2, since both ends of the spindle 2 are supported, the radial runout of the spindle 2 is small when the large-sized grinding wheel 3 is working, which makes the radial runout of the grinding wheel 3 small, thereby improving the accuracy of the processed workpiece.

[0038] 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 installation structure, characterized in that: include: A mounting sleeve (1), a main shaft (2), a grinding wheel (3) and an end support member are arranged on a grinding machine, wherein the main shaft (2) comprises a fixing section, a mounting section and a supporting section which are arranged in sequence at one end of the main shaft (2), one end of the fixing section is inserted into the mounting sleeve (1), and the grinding wheel (3) is sleeved on the mounting section; The end support member comprises a support platform (4) arranged on one side of the grinding machine, and an end mounting collar (5) arranged on the support platform (4); the suspended end of the support section is inserted into the mounting collar (5).

2. The high-precision grinding wheel mounting structure of claim 1, characterized in that: A plurality of first bearings (6) are arranged in series in the mounting collar (5), and the suspended ends of the support sections are inserted into the plurality of first bearings (6).

3. The high-precision grinding wheel mounting structure of claim 2, characterized in that: Four first bearings (6) are provided, and the four first bearings (6) are divided into two first bearing assemblies in turn, and the first bearings (6) of the two first bearing assemblies are arranged back to back.

4. The high-precision grinding wheel mounting structure of claim 1, characterized in that: The support section is provided with a first slot for fixing the inner rings of the four first bearings (6), and the mounting ring (5) is provided with a second slot for fixing the outer rings of the four first bearings (6).

5. The high-precision grinding wheel mounting structure of claim 4, characterized in that: The support section is provided with a first step surface (21) facing the side away from the fixing section, and the support section annular surface is provided with a plurality of fixing bolts (22), and the plurality of fixing bolts (22) and the first step surface (21) form a first clamping groove.

6. The high-precision grinding wheel mounting structure of claim 4, characterized in that: The end support member further comprises an end cover (7) arranged on one side of the mounting collar (5); an inner cavity annular surface of the mounting collar (5) is provided with an annular plate (51); the annular plate (51) and the end cover (7) form a second slot.

7. A high-precision grinding wheel mounting structure for a grinding machine according to claim 6, characterized in that: The end cover (7) is fixed to the mounting collar (5) by means of bolts.

8. The high-precision grinding wheel mounting structure of claim 1, characterized in that: The mounting section is sleeved with a chuck (23) for fixing a grinding wheel (3), and the grinding wheel is arranged on the chuck (23).

9. The high-precision grinding wheel installation structure of claim 1, characterized in that: A plurality of second bearings (8) are arranged on one side of the installation sleeve (1) close to the end support member.

10. The high-precision grinding wheel installation structure of claim 1, characterized in that: A plurality of third bearings (9) are arranged on a side of the mounting sleeve (1) away from the end support member.

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