Vertical dynamic and static piezoelectric spindle

Abstract

The utility model discloses a vertical dynamic and static piezoelectric spindle which comprises a protective shell, a rotary supporting mechanism and a quick mounting mechanism. The interior of the protective shell is rotationally connected with a rotor; the rotary supporting mechanism comprises inserting columns and hybrid bearings, the inserting columns are fixedly connected to the upper end and the lower end of the rotor respectively, the hybrid bearings are fixedly connected to the upper end and the lower end of the inner wall of the protective shell, and the outer surfaces of the inserting columns are connected with the inner walls of inner rings of the hybrid bearings on the same side in an inserted mode; the quick mounting mechanism is arranged on the outer surface of the protective shell; the supporting columns are fixedly connected to the opposite ends of the inserting column, the power input frame is fixedly connected to the upper end of the supporting column on the upper side, the hybrid bearing is sealed into a closed space through the sealing frame, pressure oil cannot leak when the hybrid bearing is in a vertical state, the uniformity of the hybrid bearing cannot be affected, meanwhile, rapid installation can be achieved, and the service life of the hybrid bearing is prolonged. And the device is suitable for more complex installation environments.

Description

Technical Field

[0001] The utility model relates to the technical field of electric spindles, in particular to a vertical dynamic and static pressure electric spindle. Background Art

[0002] The electric spindle is a new technology that integrates the machine tool spindle and the spindle motor in the field of CNC machine tools, while the static-dynamic piezoelectric spindle fills the gap between the dynamic and static pressure bearings with pressurized oil, making the spindle suspended and reducing friction.

[0003] Some traditional static and dynamic piezoelectric spindles input pressure oil into the gap between dynamic and static pressure bearings through oil supply equipment;

[0004] There are some problems. They are generally horizontal and lack sealing. When the electric spindle is used vertically, it will cause pressure oil leakage, affecting the uniformity of the pressure oil and the processing accuracy. At the same time, the installation is more troublesome. For this reason, we propose a vertical dynamic and static pressure electric spindle. Utility Model Content

[0005] The technical problem to be solved by the utility model is to overcome the existing defects and provide a vertical dynamic and static piezoelectric spindle that can be quickly installed. At the same time, the gap is closed into a sealed space through a sealing frame, making it more suitable for vertical use, which can effectively solve the problems in the background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a vertical dynamic and static piezoelectric spindle, comprising a protective shell, a rotation support mechanism and a quick installation mechanism;

[0007] Protective shell: the rotor is rotatably connected inside it;

[0008] Rotation support mechanism: It includes a plug column and a dynamic and static pressure bearing. The plug column is fixedly connected to the upper and lower ends of the rotor respectively. The upper and lower ends of the inner wall of the protective shell are fixedly connected to the dynamic and static pressure bearings. The outer surface of the plug column is plugged into the inner wall of the inner ring of the dynamic and static pressure bearing on the same side.

[0009] Quick installation mechanism: it is arranged on the outer surface of the protective shell;

[0010] Among them: it includes support columns, which are fixedly connected to the opposite ends of the plug columns, the upper end of the upper support column is fixedly connected to the power input frame, and the lower end of the lower support column is fixedly connected to the first mounting frame. The dynamic and static pressure bearings are closed into a closed space through the sealing frame, so that the pressure oil will not leak and affect its uniformity when it is vertical, and it can be installed quickly to adapt to more complex installation environments.

[0011] Furthermore, the rotation support mechanism also includes a sealing frame, and the upper and lower ends of the outer ring of the dynamic and static pressure bearings are fixedly connected with the sealing frame, so that the gap becomes a closed space.

[0012] Furthermore, the rotating support mechanism also includes an oil inlet pipe, an oil inlet groove and an oil exchange port. The left and right ends of the dynamic and static pressure bearings are fixedly connected with oil inlet pipes, and the oil inlet pipes are connected with the internal gaps of the dynamic and static pressure bearings on the same side. The left and right sides of the upper end of the protective shell and the left and right sides of the lower end of the protective shell are provided with oil inlet grooves, and the oil inlet grooves are connected with the interiors of the left and right adjacent oil inlet pipes. The opposite ends of the two oil inlet grooves on the upper side are fixedly connected to the oil exchange port, and the opposite ends of the two oil inlet grooves on the lower side are also fixedly connected to the oil exchange port to facilitate oil intake.

[0013] Furthermore, the quick installation mechanism includes a second mounting frame, a pillar and a third mounting frame. The second mounting frame is fixedly connected to the middle end of the outer surface of the protective shell. The outer surface of the second mounting frame is provided with evenly distributed threaded connection grooves. The internal threads of the threaded connection grooves on the front side are connected to the pillar. The front end of the pillar is fixedly connected to the third mounting frame to adapt to more complex installation environments.

[0014] Furthermore, the quick installation mechanism also includes a bolt connection port, and a left-right symmetrical third installation frame is provided on the front side of the third installation frame to facilitate quick installation.

[0015] Furthermore, a cooling groove is provided inside the protective shell, and coolant exchange ports are provided at both upper and lower ends of the front side of the protective shell, and the interior of the coolant exchange ports is connected to the interior of the cooling groove to facilitate heat dissipation.

[0016] Furthermore, both upper and lower ends of the protective shell are connected to air sealing covers through locking bolts to prevent dust from entering the interior of the electric spindle.

[0017] Compared with the prior art, the utility model has the following beneficial effects: the vertical dynamic and static piezoelectric spindle has the following advantages:

[0018] 1. The staff first connects the output shaft of the motor to the first mounting bracket through a connector, and then connects the oil delivery end of the oil supply device to the two oil exchange ports on one side, and the two oil exchange ports on the other side to the oil inlet of the oil tank. Then the oil supply device starts to supply oil, and the pressure oil enters through the two oil exchange ports on the oil inlet end to fill the gap between the dynamic and static pressure bearings. After the pressure oil is filled, it is sealed by the sealing frame. Then, during the rotation of the motor, the support column drives the plug column to rotate, and the rotation of the plug column drives the inner rings of the two dynamic and static pressure bearings to rotate. The rotation of the inner ring brings up a layer of pressure oil film. When the oil supply device supplies oil in a quantitative manner, the inner ring is suspended in the gap between the dynamic and static pressure bearings. Therefore, the pressure oil enters the gap between the dynamic and static pressure bearings and is sealed by the sealing frame to prevent the pressure oil from flowing out of the gap when the electric spindle is erected, so that the uniformity of the internal pressure oil is not affected when the electric spindle is erected.

[0019] 2. During installation, the staff can select the threaded connection groove in the appropriate position according to the different installation positions, then rotate the support to thread it with the threaded connection groove, and then install it on the machine tool through the bolt connection port. This allows for quick installation, and at the same time, more installation points are available, making it more adaptable to complex working environments. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the structure of the utility model;

[0021] Figure 2 It is a schematic diagram of the partial cross-sectional structure of the rear side of the utility model;

[0022] Figure 3 It is a schematic diagram of the external partial cross-sectional structure of the utility model.

[0023] In the figure: 1 protective shell, 2 rotor, 3 rotation support mechanism, 31 plug column, 32 dynamic and static pressure bearing, 33 sealing frame, 34 oil inlet pipe, 35 oil inlet groove, 36 oil exchange port, 4 gas seal cover, 5 locking bolt, 6 support column, 7 first mounting frame, 8 power input frame, 9 quick mounting mechanism, 91 second mounting frame, 92 support column, 93 third mounting frame, 94 bolt connection port, 10 cooling groove, 11 coolant exchange port. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] See also Figure 1-3 , This embodiment provides a technical solution: a vertical dynamic and static piezoelectric spindle, including a protective shell 1, a rotation support mechanism 3 and a quick installation mechanism 9;

[0026] Protective shell 1: The rotor 2 is rotatably connected inside the protective shell 1, a cooling groove 10 is provided inside the protective shell 1, and coolant exchange ports 11 are provided at both upper and lower ends of the front side of the protective shell 1. The interior of the coolant exchange ports 11 is communicated with the interior of the cooling groove 10, and the upper and lower ends of the protective shell 1 are connected to the gas sealing cover 4 through the locking bolts 5;

[0027] The rotation support mechanism 3 includes a plug post 31 and a dynamic and static pressure bearing 32. The plug post 31 is fixedly connected to the upper and lower ends of the rotor 2 respectively. The upper and lower ends of the inner wall of the protective shell 1 are fixedly connected to the dynamic and static pressure bearing 32. The outer surface of the plug post 31 is plugged into the inner wall of the inner ring of the dynamic and static pressure bearing 32 on the same side. The rotation support mechanism 3 also includes a sealing frame 33. The upper and lower ends of the outer ring of the dynamic and static pressure bearing 32 are fixedly connected to the sealing frame 33. The rotation support mechanism 3 also includes an oil inlet pipe 34 and an oil inlet groove 34. 5 and oil exchange port 36, the left and right ends of the dynamic and static pressure bearing 32 are fixedly connected with oil inlet pipes 34, and the oil inlet pipes 34 are communicated with the internal gap of the dynamic and static pressure bearing 32 on the same side, and the left and right sides of the upper end of the protective shell 1 and the left and right sides of the lower end of the protective shell 1 are provided with oil inlet grooves 35, and the oil inlet grooves 35 are communicated with the interior of the left and right adjacent oil inlet pipes 34, and the opposite ends of the two oil inlet grooves 35 on the upper side are fixedly connected to the oil exchange port 36, and the opposite ends of the two oil inlet grooves 35 on the lower side are fixedly connected to the oil exchange port 36. The ends are also fixedly connected to the oil exchange port 36. The staff first connects the output shaft of the motor to the first mounting frame 7 through the connector, and then connects the oil delivery end of the oil supply device to the two oil exchange ports 36 on one side, and the two oil exchange ports 36 on the other side are connected to the oil inlet of the oil tank. Then the oil supply device starts to supply oil, and the pressure oil enters through the two oil exchange ports 36 on the oil inlet end to fill the gap of the dynamic and static pressure bearings 32. After the pressure oil is filled, it is sealed by the sealing frame 33. Then, during the rotation of the motor, the support column 6 drives the plug column 31 to rotate. The rotation of the plug column 31 drives the inner rings of the two dynamic and static pressure bearings 32 to rotate. The rotation of the inner ring brings up a layer of pressure oil film. When the oil supply device supplies oil in a quantitative manner, the inner ring is suspended in the gap of the dynamic and static pressure bearings 32. Therefore, the pressure oil enters the gap of the dynamic and static pressure bearings 32 and is sealed by the sealing frame 33, so as to prevent the pressure oil from flowing out of the gap when the electric spindle is erected, so that the uniformity of the internal pressure oil is not affected when the electric spindle is erected.

[0028] Quick installation mechanism 9: It is arranged on the outer surface of the protective shell 1. The quick installation mechanism 9 includes a second installation frame 91, a pillar 92 and a third installation frame 93. The second installation frame 91 is fixedly connected to the middle end of the outer surface of the protective shell 1. The outer surface of the second installation frame 91 is provided with evenly distributed threaded connection grooves. The inner thread of the threaded connection groove on the front side is connected with the pillar 92. The front end of the pillar 92 is fixedly connected with the third installation frame 93. The quick installation mechanism 9 also includes a bolt connection port 94. The front side of the third installation frame 93 is provided with a left-right symmetrical third installation frame 93. During installation, the staff can select a threaded connection groove at a suitable position according to different installation positions, and then rotate the pillar 92 to thread it with the threaded connection groove, and then install it on the machine tool through the bolt connection port 94, thereby allowing for quick installation. At the same time, there are more points that can be installed, which is more adaptable to complex working environments.

[0029] Among them: it includes support columns 6, and the support columns 6 are fixedly connected to the opposite ends of the plug columns 31. The upper end of the upper support column 6 is fixedly connected to the power input frame 8, and the lower end of the lower support column 6 is fixedly connected to the first mounting frame 7.

[0030] The working principle of a vertical dynamic and static pressure electric spindle provided by the utility model is as follows: during the working process, the staff first connects the output shaft of the motor to the first mounting frame 7 through a connector, and then connects the oil delivery end of the oil supply device to the two oil exchange ports 36 on one side respectively, and the two oil exchange ports 36 on the other side are connected to the oil inlet of the oil tank, and then the oil supply device starts to supply oil, and the pressure oil enters through the two oil exchange ports 36 at the oil inlet end to fill the gap of the dynamic and static pressure bearings 32. After the pressure oil is filled, it is sealed by the sealing frame 33, and then during the rotation of the motor, the support column 6 drives the plug column 31 to rotate, and the rotation of the plug column 31 drives the inner rings of the two dynamic and static pressure bearings 32 The inner ring rotates and brings up a layer of pressure oil film. When the oil supply equipment supplies oil quantitatively, the inner ring is suspended in the gap between the dynamic and static pressure bearings 32. The pressure oil enters the gap between the dynamic and static pressure bearings 32 and is sealed by the sealing frame 33 to prevent the pressure oil from flowing out of the gap when the electric spindle is erected. Therefore, the uniformity of the internal pressure oil is not affected when the electric spindle is erected. During installation, the staff can select the threaded connection groove at a suitable position according to the different installation positions, and then rotate the support 92 to thread it with the threaded connection groove, and then install it to the machine tool through the bolt connection port 94. This allows for quick installation and more installation points, which is more adaptable to complex working environments.

[0031] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A vertical dynamic and static piezoelectric spindle, characterized in that: It comprises a protective shell (1), a rotation support mechanism (3) and a quick installation mechanism (9); Protective shell (1): a rotor (2) is rotatably connected therein; The rotation support mechanism (3) comprises an insertion column (31) and a dynamic and static pressure bearing (32), wherein the insertion column (31) is fixedly connected to the upper and lower ends of the rotor (2), respectively, and the upper and lower ends of the inner wall of the protective shell (1) are fixedly connected to the dynamic and static pressure bearing (32), and the outer surface of the insertion column (31) is inserted into the inner wall of the inner ring of the dynamic and static pressure bearing (32) on the same side; A quick installation mechanism (9): arranged on the outer surface of the protective shell (1); Wherein: it comprises support columns (6), the support columns (6) are all fixedly connected to the opposite ends of the plug column (31), the upper end of the upper support column (6) is fixedly connected to the power input frame (8), and the lower end of the lower support column (6) is fixedly connected to the first mounting frame (7).

2. A vertical dynamic and static piezoelectric spindle according to claim 1, characterized in that: The rotation support mechanism (3) further comprises a sealing frame (33), and the sealing frame (33) is fixedly connected to the upper and lower ends of the outer ring of the dynamic and static pressure bearing (32).

3. The vertical dynamic and static piezoelectric spindle according to claim 1, characterized in that: The rotation support mechanism (3) further comprises an oil inlet pipe (34), an oil inlet groove (35) and an oil exchange port (36); the left and right ends of the dynamic and static pressure bearing (32) are fixedly connected to the oil inlet pipe (34); the oil inlet pipe (34) is communicated with the internal gap of the dynamic and static pressure bearing (32) on the same side; the left and right sides of the upper end of the protective shell (1) and the left and right sides of the lower end of the protective shell (1) are provided with oil inlet grooves (35); the oil inlet grooves (35) are communicated with the interior of the left and right adjacent oil inlet pipes (34); the opposite ends of the two upper oil inlet grooves (35) are fixedly connected to the oil exchange port (36); and the opposite ends of the two lower oil inlet grooves (35) are also fixedly connected to the oil exchange port (36).

4. The vertical dynamic and static piezoelectric spindle according to claim 1, characterized in that: The quick installation mechanism (9) comprises a second installation frame (91), a support column (92) and a third installation frame (93); the second installation frame (91) is fixedly connected to the middle end of the outer surface of the protective shell (1); the outer surface of the second installation frame (91) is provided with evenly distributed threaded connection grooves; the inner thread of the front threaded connection groove is connected to the support column (92); and the front end of the support column (92) is fixedly connected to the third installation frame (93).

5. A vertical dynamic and static piezoelectric spindle according to claim 4, characterized in that: The quick installation mechanism (9) further comprises a bolt connection port (94), and a left-right symmetrical third installation frame (93) is provided on the front side of the third installation frame (93).

6. The vertical dynamic and static piezoelectric spindle according to claim 1, characterized in that: A cooling groove (10) is provided inside the protective shell (1), and cooling liquid exchange ports (11) are provided at both upper and lower ends of the front side surface of the protective shell (1), and the interior of the cooling liquid exchange ports (11) is communicated with the interior of the cooling groove (10).

7. The vertical dynamic and static piezoelectric spindle according to claim 1, characterized in that: The upper and lower ends of the protective shell (1) are connected to gas sealing covers (4) via locking bolts (5).

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