Machine tool spindle bearing assembling device

Abstract

The utility model discloses a machine tool spindle bearing assembling device which comprises a base, a positioning frame is fixedly connected to the top of the base, and first electric push rods are symmetrically and fixedly connected to the two sides of the positioning frame. Through cooperation of the base, the positioning frame, the first electric push rod and the first clamp, the machine tool spindle can be positioned and can be borne through the base, then the stability of the machine tool spindle after positioning can be improved, then through cooperation of the mounting frame, the second electric push rod and the second clamp, a bearing can be clamped and positioned, and the machining efficiency is improved. According to the machine tool spindle assembly device, the probability that the spindle and the bearing cannot be aligned can be completely eradicated, the bearing can vertically descend through cooperation of the lifting frame, the lifting groove, the threaded rod and the threaded block, then the bearing can be inserted into the machine tool spindle, assembly of the machine tool spindle can be completed, and stability and precision in the assembly process can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of machine tool spindle bearing assembly, in particular to a device for assembling a machine tool spindle bearing. Background Art

[0002] Direct-drive spindles for machine tools, commonly known as electric spindles, integrate the machine tool spindle and spindle motor into one unit. This new spindle component offers excellent performance, including compact structure, light weight, low inertia, low noise, and fast response, as well as high speed and high power. Electric spindles are directly driven by a built-in electric motor, which, through a control system, achieves the required operating speed and torque. These electric spindles are also known as built-in electric spindles. These eliminate the need for belts, gears, or couplings, reducing the length of the machine tool's main drive chain to zero, achieving "zero drive" and effectively improving the spindle's overall performance.

[0003] After searching, Chinese patent application number 202320898833.9 discloses a device for facilitating the assembly of spindle bearings. This patent relates to the field of spindle assembly technology and discloses a device for facilitating the assembly of spindle bearings, comprising a table, an assembly mechanism provided inside the table, and a clamping mechanism installed on the top of the assembly mechanism; the assembly mechanism comprises a mounting groove and a first motor, the mounting groove being provided inside the table, the first motor being installed at the bottom end of the table, the output end of the first motor passing through the bottom of the table and fixedly connected to a gear, the inner wall of the mounting groove being provided with two slide grooves 2, the inner walls of the two slide grooves 2 being slidably connected to a rack plate, and the top of the rack plate being fixedly connected to a connecting block. This patent can automatically press the spindle into the inner hole of the bearing, automatically completing the assembly operation, with high work efficiency, without the need for manual hammering with tools, and at the same time, will not cause deformation of the spindle or bearing, thereby ensuring the quality of the spindle assembly.

[0004] Although the above patent can automatically press the main shaft into the inner hole of the bearing and automatically complete the assembly operation with high work efficiency, without the need for manual hammering with tools, and at the same time will not cause the main shaft or bearing to deform, thereby ensuring the quality of the main shaft assembly, in actual use, since the main shaft has different length specifications, and the patent can only clamp one end of the main shaft, if the main shaft is long, the assembly part at the other end is in a suspended state, it may tilt under the action of gravity, resulting in the main shaft assembly part and the bearing on the other side cannot be aligned, so that additional tools or manual auxiliary positioning are required, thereby affecting the assembly accuracy of the main shaft and the bearing.

[0005] Therefore, it is necessary to modify the spindle bearing assembly device in the above patent to effectively prevent only one end of the spindle from being clamped. If the spindle is long, the assembly at the other end is suspended, and it may tilt due to the force of gravity, resulting in the spindle assembly being unable to align with the bearing on the other side. Utility Model Content

[0006] In order to solve the problems raised in the above-mentioned background technology, the purpose of the utility model is to provide a device for assembling the spindle bearings of a machine tool, which has the ability to convert the horizontal clamping assembly of the spindle into a vertical clamping assembly, and can eliminate the possibility of the spindle and the bearing being misaligned, thereby improving the assembly stability and accuracy. It solves the problem that only one end of the spindle can be clamped. If the spindle is long, the assembly at the other end is in a suspended state, and it may tilt due to the action of gravity, thereby causing the spindle assembly to be misaligned with the bearing on the other side.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a device for assembling a spindle bearing of a machine tool, comprising a base, the top of the base is fixedly connected to a positioning frame, the two sides of the positioning frame are symmetrically fixedly connected to a first electric push rod, the output end of the first electric push rod passes through the positioning frame and is fixedly connected to a first clamp, the top of the base is fixedly connected to a lifting frame, the lifting frame is provided with a lifting slot on a side close to the positioning frame, the lifting slot is rotatably connected to a threaded rod, and the bottom of the threaded rod extends to the interior of the lifting frame and is driven by a lifting motor, the surface of the threaded rod is threadedly connected to a threaded block, the front of the threaded block is fixedly connected to the mounting frame, the two sides of the mounting frame are symmetrically fixedly connected to a second electric push rod, the output end of the second electric push rod passes through the mounting frame and is fixedly connected to the second clamp, and the second clamp is located directly above the first clamp and used in conjunction with it, and a control panel is provided on the front of the base.

[0008] As a preferred embodiment of the present invention, the inner wall of the second clamp is symmetrically provided with limiting grooves, the interior of the limiting groove is fixedly connected with a spring, the other end of the spring is fixedly connected with a limiting block, and the limiting block is slidably connected to the limiting groove.

[0009] As a preferred embodiment of the present invention, a bearing pad is fixedly connected to the interior of the positioning frame, a first limiting groove is symmetrically provided on the top of the bearing pad, a first limiting block is symmetrically fixedly connected to the bottom of the first clamp, and the first limiting block is slidably connected to the first limiting groove.

[0010] As a preferred embodiment of the present invention, second limiting grooves are symmetrically provided on the inner wall of the installation frame, second limiting blocks are symmetrically fixedly connected to both sides of the second clamp, and the second limiting blocks are slidably connected to the second limiting grooves.

[0011] As a preferred embodiment of the present invention, a sliding column is fixedly connected symmetrically with respect to the threaded rod inside the lifting groove, and a sliding opening is symmetrically opened on the surface of the threaded block, and the sliding opening is slidably connected to the sliding column.

[0012] As a preferred embodiment of the present invention, the bottom of the base is fixedly connected to a screw rod, the surface of the screw rod is threadedly connected to a rod sleeve, and the bottom of the rod sleeve is fixedly connected to a brake block.

[0013] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0014] 1. The utility model can position the machine tool spindle through the cooperation of the base, the positioning frame, the first electric push rod and the first clamp, and can use the base to support it, thereby improving the stability of the machine tool spindle after positioning; then, through the cooperation of the mounting frame, the second electric push rod and the second clamp, the bearing can be clamped and positioned, and the possibility of the spindle and the bearing not being able to be aligned can be eliminated; and by using the cooperation of the lifting frame, the lifting slot, the threaded rod and the threaded block, the bearing can be vertically lowered, and then the bearing can be inserted into the machine tool spindle, thereby completing its assembly and improving the stability and precision during assembly.

[0015] 2. The utility model can block the upward movement path of the bearing by setting the limiting groove, spring and limiting block, thereby preventing the bearing from moving upward autonomously when in contact with the machine tool spindle, thereby improving the stability of the device during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the structure of the utility model;

[0017] Figure 2 This is a three-dimensional schematic diagram of the structure of the utility model when viewed from above;

[0018] Figure 3 It is a three-dimensional schematic diagram of the structure of the utility model from a top view;

[0019] Figure 4 This is a bottom-up stereoscopic diagram of the first electric push rod and the first clamp used in conjunction with each other in the present invention;

[0020] Figure 5 It is a top perspective schematic diagram of the installation frame, the second electric push rod and the second clamp used in conjunction with each other in the utility model.

[0021] In the figure: 1. Base; 2. Positioning frame; 3. First electric push rod; 4. First clamp; 5. Lifting frame; 6. Lifting slot; 7. Threaded rod; 8. Threaded block; 9. Mounting frame; 10. Second electric push rod; 11. Second clamp; 12. Control panel; 13. Limiting slot; 14. Spring; 15. Limiting block; 16. First limiting slot; 17. First limiting block; 18. Second limiting slot; 19. Second limiting block; 20. Sliding column; 21. Sliding mouth; 22. Screw rod; 23. Rod sleeve. DETAILED DESCRIPTION

[0022] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0023] like Figures 1 to 5 As shown, the utility model provides a device for assembling a spindle bearing of a machine tool, comprising a base 1, a positioning frame 2 being fixedly connected to the top of the base 1, a first electric push rod 3 being symmetrically fixedly connected to both sides of the positioning frame 2, an output end of the first electric push rod 3 passing through the positioning frame 2 and fixedly connected to a first clamp 4, a lifting frame 5 being fixedly connected to the top of the base 1, a lifting slot 6 being provided on the side of the lifting frame 5 close to the positioning frame 2, a threaded rod 7 being rotatably connected to the inside of the lifting slot 6, and the bottom of the threaded rod 7 extending to the inside of the lifting frame 5 and driven by a lifting motor, a threaded block 8 being threadedly connected to the surface of the threaded rod 7, a mounting frame 9 being fixedly connected to the front of the threaded block 8, a second electric push rod 10 being symmetrically fixedly connected to both sides of the mounting frame 9, an output end of the second electric push rod 10 passing through the mounting frame 9 and fixedly connected to a second clamp 11, and the second clamp 11 is located directly above the first clamp 4 and used in conjunction with it, a control panel 12 is provided on the front of the base 1, and the control panel 12 is an existing mature technology product.

[0024] refer to Figure 5 The inner wall of the second clamp 11 is symmetrically provided with a limiting groove 13, the interior of the limiting groove 13 is fixedly connected with a spring 14, the other end of the spring 14 is fixedly connected with a limiting block 15, and the limiting block 15 is slidably connected to the limiting groove 13.

[0025] As a technical optimization solution of the present invention, by setting the limiting groove 13, the spring 14 and the limiting block 15, the path of the bearing moving upward can be blocked, thereby avoiding the phenomenon of the bearing moving upward autonomously when contacting the machine tool spindle, thereby improving the stability of the device during use.

[0026] refer to Figure 3 and Figure 4 A bearing pad is fixedly connected to the inside of the positioning frame 2, and a first limiting groove 16 is symmetrically opened on the top of the bearing pad. A first limiting block 17 is symmetrically fixedly connected to the bottom of the first clamp 4, and the first limiting block 17 is slidably connected to the first limiting groove 16.

[0027] As a technical optimization solution of the present invention, by setting the bearing pad, the first limiting groove 16 and the first limiting block 17, the movement trajectory of the first clamp 4 can be limited, making it more stable when clamping the machine tool spindle.

[0028] refer to Figure 5 The inner wall of the mounting frame 9 is symmetrically provided with a second limiting groove 18 , and the two sides of the second clamp 11 are symmetrically fixedly connected with a second limiting block 19 , and the second limiting block 19 is slidably connected to the second limiting groove 18 .

[0029] As a technical optimization solution of the present invention, the second limiting groove 18 and the second limiting block 19 are provided to limit the movement trajectory of the second clamp 11, thereby improving its stability when clamping the bearing.

[0030] refer to Figure 1 and Figure 3 The interior of the lifting groove 6 is symmetrically fixed with a sliding post 20 about the threaded rod 7, and the surface of the threaded block 8 is symmetrically provided with a sliding opening 21, and the sliding opening 21 is slidably connected to the sliding post 20.

[0031] As a technical optimization solution of the present invention, the setting of the sliding column 20 and the sliding mouth 21 can limit the movement trajectory of the threaded block 8, ensuring that it can only perform vertical linear movement.

[0032] refer to Figure 2 The bottom of the base 1 is fixedly connected with a screw rod 22, the surface of the screw rod 22 is threadedly connected with a rod sleeve 23, and the bottom of the rod sleeve 23 is fixedly connected with a brake block.

[0033] As a technical optimization solution of the present invention, through the setting of the screw rod 22, the rod sleeve 23 and the brake block, the rod sleeve 23 can be rotated to make it rise and fall, thereby adjusting the height of the base 1, and then the base 1 can be kept parallel to the horizontal plane.

[0034] The working principle and usage process of the present invention are as follows: when using the device for assembling the machine tool spindle bearing, the device is first connected to an external power supply, and then the control panel 12 starts the first electric push rod 3 to move the first clamp 4 to the maximum position on both sides, and then starts the lifting motor to drive the threaded rod 7 to rotate, so that it drives the threaded block 8 to move up to the appropriate position, and then starts the second electric push rod 10 to drive the second clamp 11 to clamp the bearing to be assembled. At this time, it should be noted that the bearing to be assembled needs to be placed under the limit block 15 and fit with it, and then the machine tool spindle to be assembled is placed in the positioning frame 2, and then the first electric push rod 3 is started again to drive the first clamp 4 to clamp and position the machine tool spindle, and then the lifting motor is started again to drive the threaded block 8 to descend vertically, so that the bearing to be assembled can be pressed into the machine tool spindle to be assembled, and the assembly operation is automatically completed. At this time, the limit block 15 can resist the bearing, thereby avoiding the bearing from offsetting during the assembly process, and thus eliminating the possibility of the spindle and the bearing being out of alignment, thereby improving the assembly stability and precision, and ensuring the assembly quality of the machine tool spindle.

[0035] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0036] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A device for assembling a spindle bearing of a machine tool, comprising a base (1), characterized in that: The top of the base (1) is fixedly connected to a positioning frame (2), and the two sides of the positioning frame (2) are symmetrically fixedly connected to first electric push rods (3), and the output end of the first electric push rod (3) passes through the positioning frame (2) and is fixedly connected to a first clamp (4). The top of the base (1) is fixedly connected to a lifting frame (5), and a lifting slot (6) is provided on the side of the lifting frame (5) close to the positioning frame (2). The interior of the lifting slot (6) is rotatably connected to a threaded rod (7), and the bottom of the threaded rod (7) extends to the interior of the lifting frame (5) and is driven by a lifting motor. The surface of the threaded rod (7) is threadedly connected to a threaded block (8), and the front of the threaded block (8) is fixedly connected to a mounting frame (9). The two sides of the mounting frame (9) are symmetrically fixedly connected to second electric push rods (10), and the output end of the second electric push rod (10) passes through the mounting frame (9) and is fixedly connected to a second clamp (11), and the second clamp (11) is located directly above the first clamp (4) and is used in conjunction with it. A control panel (12) is provided on the front of the base (1).

2. The device for assembling a machine tool spindle bearing according to claim 1, characterized in that: The inner wall of the second clamp (11) is symmetrically provided with a limiting groove (13), the interior of the limiting groove (13) is fixedly connected to a spring (14), the other end of the spring (14) is fixedly connected to a limiting block (15), and the limiting block (15) is slidably connected to the limiting groove (13).

3. The device for assembling a machine tool spindle bearing according to claim 1, characterized in that: A bearing pad is fixedly connected to the interior of the positioning frame (2), a first limiting groove (16) is symmetrically provided on the top of the bearing pad, a first limiting block (17) is symmetrically fixedly connected to the bottom of the first clamp (4), and the first limiting block (17) is slidably connected to the first limiting groove (16).

4. The device for assembling a machine tool spindle bearing according to claim 1, characterized in that: The inner wall of the installation frame (9) is symmetrically provided with a second limiting groove (18), and the two sides of the second clamp (11) are symmetrically fixedly connected with a second limiting block (19), and the second limiting block (19) is slidably connected to the second limiting groove (18).

5. The device for assembling a machine tool spindle bearing according to claim 1, characterized in that: The interior of the lifting groove (6) is symmetrically fixedly connected with a sliding column (20) about the threaded rod (7), and the surface of the threaded block (8) is symmetrically provided with a sliding opening (21), and the sliding opening (21) is slidably connected to the sliding column (20).

6. The device for assembling a machine tool spindle bearing according to claim 1, characterized in that: The bottom of the base (1) is fixedly connected to a screw rod (22), the surface of the screw rod (22) is threadedly connected to a rod sleeve (23), and the bottom of the rod sleeve (23) is fixedly connected to a brake block.

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