Split type HSK taper hole tool changing electric spindle

Abstract

The utility model relates to the field of machine tool spindles, in particular to a split type HSK taper hole tool changing electric spindle which is characterized in that a spindle is rotationally arranged in a spindle shell, a taper hole is formed in one end of the spindle, a threaded lantern ring for protecting the taper hole is installed in the taper hole and is of a detachable structure, and an HSK pull claw assembly is installed in the threaded lantern ring; an HSK knife handle assembly is mounted on the HSK pull claw assembly; the HSK pull claw assembly is fixedly connected with a main shaft in the main shaft shell, the other end of the main shaft is connected with the top extending end of the air cylinder assembly on the outer side of the main shaft shell, the outer side of the main shaft is fixedly sleeved with a broach rod, and a stator and rotor driving assembly is arranged in the main shaft shell and located on the outer side of the broach rod. According to the utility model, the threaded lantern ring is arranged in the taper hole of the main shaft, so that the taper hole can be protected, when the threaded lantern ring is worn after being used for a long time, the precision of the threaded lantern ring can be recovered only by simply grinding the threaded lantern ring, the repairing speed is higher, and the maintenance cost is greatly reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of machine tool spindles, in particular to a split-type HSK taper hole tool-changing electric spindle. Background Art

[0002] HSK taper tool change electric spindle is a key component widely used in modern CNC machine tools. It combines the high performance of the electric spindle with the efficient tool change advantage of HSK taper hole. The HSK taper tool change electric spindle is an electric spindle that integrates the motor, bearing, cooling system and HSK taper hole interface. It can realize the rotation of the workpiece and a variety of processing technologies, while supporting the rapid tool change function.

[0003] However, the existing HSK taper hole tool change electric spindle is prone to wear due to frequent tool change operations and high-speed rotation during long-term use. And it has many disadvantages, such as:

[0004] 1. After the traditional HSK taper spindle is worn, it needs to be electroplated and then ground to restore the accuracy. This repair process is complicated and takes a long time, affecting production efficiency. In addition, the cost of electroplating and grinding is high, which increases maintenance costs.

[0005] 2. The electroplating and grinding repair process may cause deformation of the overall structure of the spindle, thus affecting the performance and life of the spindle. Utility Model Content

[0006] The utility model aims to solve the shortcomings in the prior art and proposes a split-type HSK taper hole tool-changing electric spindle.

[0007] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0008] A split HSK tapered hole tool-changing electric spindle comprises a spindle housing, a spindle is rotatably arranged in the spindle housing, a tapered hole is arranged at one end of the spindle, a threaded collar for protecting the tapered hole is installed in the tapered hole, the threaded collar is a detachable structure, an HSK claw assembly is installed in the threaded collar, and an HSK tool handle assembly is installed on the HSK claw assembly; the HSK claw assembly is fixedly connected to the spindle inside the spindle housing, the other end of the spindle is connected to the top extension end of the cylinder assembly outside the spindle housing, a tool drawing rod is arranged on the outer fixed sleeve of the spindle, and a stator and rotor drive assembly is arranged on the outer side of the tool drawing rod in the spindle housing.

[0009] In addition, a preferred structure is that a plurality of connecting blocks are provided on a side of the spindle housing away from the tapered hole, and the connecting blocks are all fixedly connected to the cylinder assembly.

[0010] In addition, a preferred structure is that a plurality of broaching disc springs are installed inside the spindle housing, the broaching disc springs are arranged along the direction of the tapered hole, and the other ends of the broaching disc springs are connected to the broaching rod.

[0011] In addition, a preferred structure is that a rear bearing chamber and a front bearing chamber are respectively provided at both ends of the spindle housing, and a plurality of rear bearings and front bearings are respectively provided in the rear bearing chamber and the front bearing chamber.

[0012] In addition, a preferred structure is that the rear bearing and the front bearing are both sleeved on the outside of the main shaft.

[0013] In addition, a preferred structure is that a stator coil is arranged inside the main shaft housing, a rotor is arranged inside the stator coil, and the rotor is fixedly sleeved on the outside of the main shaft.

[0014] In addition, a preferred structure is that the threaded collar is provided with an external thread, a screw groove is provided in the tapered hole corresponding to the external thread on the threaded collar, and the threaded collar is movably arranged in the tapered hole.

[0015] The beneficial effects of the utility model are as follows: by installing the threaded collar in the tapered hole of the main shaft, the tapered hole can be protected; when the threaded collar is worn after long-term use, its accuracy can be restored by simply grinding it without complicated electroplating and grinding repair of the tapered hole; the repair speed is fast and the impact on production efficiency is small; and the threaded collar and the tapered hole are separated, so when the threaded collar is severely worn, it only needs to be replaced without replacing the entire main shaft, which greatly reduces the maintenance cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a structural schematic diagram of a split-type HSK taper hole tool-changing electric spindle proposed by the utility model;

[0017] Figure 2 for Figure 1 Schematic diagram of the structure when the middle spindle is releasing the tool.

[0018] In the figure: 1 spindle housing, 2 cylinder assembly, 3 connecting block, 4 rear bearing chamber, 5 rear bearing, 6 broaching rod, 7 broaching disc spring, 8 stator coil, 9 rotor, 10 front bearing chamber, 11 front bearing, 12 threaded collar, 13 HSK claw assembly, 14 HSK tool holder assembly. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0020] Reference Figure 1-2 A split-type HSK tapered hole tool-changing electric spindle comprises a spindle housing 1, a spindle is rotatably arranged in the spindle housing 1, a tapered hole is arranged at one end of the spindle, a threaded collar 12 for protecting the tapered hole is installed in the tapered hole, the threaded collar 12 is a detachable structure, an HSK claw assembly 13 is installed in the threaded collar 12, and an HSK tool handle assembly 14 is installed on the HSK claw assembly 13. The HSK claw assembly 13 is fixedly connected to the spindle inside the spindle housing 1, and the other end of the spindle is connected to the top extension end of the cylinder assembly 2 outside the spindle housing 1, a tool rod 6 is arranged on the outer fixed sleeve of the spindle, and a stator-rotor drive assembly is arranged outside the tool rod 6 in the spindle housing 1.

[0021] It is worth noting that the specific structure and working mode of the split HSK tapered hole tool changing electric spindle are existing technologies currently disclosed on the market. They are common knowledge known to technical personnel in this field and are not the main technical problems to be solved in this technical solution. Therefore, they are not elaborated in this utility model.

[0022] Among them, a plurality of connection blocks 3 are arranged on the side of the spindle housing 1 away from the tapered hole, and the connection blocks 3 are all fixedly connected to the cylinder assembly 2. Through the arrangement of the connection blocks 3, the cylinder assembly 2 and the spindle housing 1 can be fixedly connected, so that the broaching rod 6 can be connected to the top extension end of the cylinder assembly 2, so that the broaching rod 6 can be controlled by the cylinder assembly 2 to move.

[0023] Among them, a plurality of broaching disc springs 7 are installed inside the spindle housing 1, and the broaching disc springs 7 are arranged along the direction of the tapered hole, and the other ends of the broaching disc springs 7 are connected to the broaching rod 6. Through the arrangement of the broaching disc springs 7, when the cylinder assembly 2 is retracted, the broaching disc springs 7 can be used to control the broaching rod 6 to reset, and through the arrangement of the broaching disc springs 7, the stability of the broaching rod 6 during use can also be improved.

[0024] The two ends of the spindle housing 1 are respectively provided with a rear bearing chamber 4 and a front bearing chamber 10, and a plurality of rear bearings 5 ​​and a front bearing 11 are respectively provided in the rear bearing chamber 4 and the front bearing chamber 10. The rear bearing 5 and the front bearing 11 are both sleeved on the outside of the broaching rod 6. The arrangement of the rear bearing 5 and the front bearing 11 can ensure the stability of the spindle during rotation, thereby ensuring the normal rotation of the spindle.

[0025] Among them, the spindle housing 1 is provided with a stator coil 8, and the stator coil 8 is provided with a rotor 9, and the rotor 9 is fixedly sleeved on the outside of the spindle. By supplying power to the stator coil 8, the rotor 9 can be driven to rotate, thereby driving the spindle and the broaching rod 6 to rotate. And it is worth noting that the specific structure of the stator coil 8 and the rotor 9 and their working methods are all existing technologies currently disclosed on the market, which are common knowledge known to those skilled in the art, and do not belong to the main technical problems to be solved in this technical solution, so they are not elaborated in this utility model.

[0026] The threaded collar 12 is provided with an external thread, and a screw groove is provided in the tapered hole corresponding to the external thread on the threaded collar 12, and the threaded collar 12 is movably arranged in the tapered hole. The threaded collar 12 is not only connected by threads during installation, but also installed in the tapered hole by interference fit, so as to ensure that the threaded collar 12 will not loosen during high-speed rotation.

[0027] In this embodiment, the threaded collar 12 is installed in the tapered hole. The threaded collar 12 can protect the tapered hole, thereby increasing the service life of the entire spindle. The HSK claw assembly 13 and the HSK tool handle assembly 14 are both installed on the spindle. The tool can be installed through the arrangement of the HSK claw assembly 13 and the HSK tool handle assembly 14, so that the installed tool can be rotated and milled through the spindle. It is also worth noting that the specific structure and working method of the HSK claw assembly 13 and the HSK tool handle assembly 14 are both existing technologies currently disclosed on the market, which are common knowledge known to those skilled in the art, and do not belong to the main technical problems to be solved in this technical solution, so they are not elaborated in this utility model.

[0028] Furthermore, by the matching arrangement between the cylinder assembly 2, the broaching rod 6 and the broaching disc spring 7, the spindle can be pushed, thereby realizing the replacement of the tool. By the matching arrangement between the stator coil 8 and the rotor 9, the spindle can be driven, thereby causing the spindle to rotate. By the arrangement of the rear bearing 5 and the front bearing 11, it can be ensured that the spindle remains stable during the rotation process, thereby ensuring the normal use of the device.

[0029] Furthermore, the threaded collar 4 is made of high-strength, wear-resistant material, such as high-strength steel. This ensures its stability and durability during use, thereby providing more effective protection for the tapered hole. The threaded collar 4 is installed in the external tapered hole by means of an interference fit threaded connection, ensuring that it will not loosen during high-speed rotation.

[0030] Furthermore, when the threaded collar 4 is worn, the accuracy of the tapered hole can be restored by simply adjusting the position of the threaded collar 4 and then performing a simple grinding operation, without the need for performing a complex electroplating and grinding process to repair the tapered hole, and the repair cost is low.

[0031] Furthermore, the threaded collar 4 can be replaced separately. When the main shaft is severely worn, there is no need to replace the entire main shaft, but only the collar needs to be replaced, which greatly reduces the maintenance cost of the device.

[0032] In the utility model, the threaded collar 4 is installed in the tapered hole of the main shaft, so that the tapered hole can be protected. When the threaded collar 4 is worn after long-term use, it only needs to be simply ground to restore its accuracy, without the need for complicated electroplating and grinding repair of the tapered hole. The repair speed is fast and the impact on production efficiency is small. The threaded collar 4 and the tapered hole are separated. When the threaded collar 4 is severely worn, it only needs to be replaced without replacing the entire main shaft, which greatly reduces the maintenance cost.

[0033] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A split-type HSK taper-hole tool-changing electric spindle, comprising a spindle housing (1), characterized in that: A spindle is rotatably arranged in the spindle housing (1), one end of the spindle is provided with a tapered hole, a threaded collar (12) for protecting the tapered hole is installed in the tapered hole, the threaded collar (12) is a detachable structure, an HSK claw assembly (13) is installed in the threaded collar (12), and an HSK tool handle assembly (14) is installed on the HSK claw assembly (13); The HSK pulling claw assembly (13) is fixedly connected to the main shaft inside the main shaft housing (1), and the other end of the main shaft is connected to the top extension end of the cylinder assembly (2) outside the main shaft housing (1). The outer fixed sleeve of the main shaft is provided with a pulling rod (6), and a stator and rotor drive assembly is provided on the outside of the pulling rod (6) in the main shaft housing (1).

2. The split-type HSK taper hole tool-changing electric spindle according to claim 1 is characterized in that: A plurality of connection blocks (3) are arranged on a side of the spindle housing (1) away from the tapered hole, and the connection blocks (3) are all fixedly connected to the cylinder assembly (2).

3. The split-type HSK taper hole tool-changing electric spindle according to claim 1 is characterized in that: A plurality of tool puller disc springs (7) are installed inside the spindle housing (1). The tool puller disc springs (7) are arranged along the direction of the tapered hole, and the other ends of the tool puller disc springs (7) are connected to the tool puller rod (6).

4. The split-type HSK taper hole tool-changing electric spindle according to claim 1 is characterized in that: The two ends of the main shaft housing (1) are respectively provided with a rear bearing chamber (4) and a front bearing chamber (10), and a plurality of rear bearings (5) and a plurality of front bearings (11) are respectively provided in the rear bearing chamber (4) and the front bearing chamber (10).

5. The split-type HSK taper hole tool-changing electric spindle according to claim 4 is characterized in that: The rear bearing (5) and the front bearing (11) are both sleeved on the outside of the main shaft.

6. The split-type HSK taper hole tool-changing electric spindle according to claim 1 is characterized in that: A stator coil (8) is arranged inside the main shaft housing (1), a rotor (9) is arranged inside the stator coil (8), and the rotor (9) is fixedly sleeved on the outside of the main shaft.

7. The split-type HSK taper hole tool-changing electric spindle according to claim 1 is characterized in that: The threaded collar (12) is provided with an external thread, a screw groove is provided in the tapered hole corresponding to the external thread on the threaded collar (12), and the threaded collar (12) is movably arranged in the tapered hole.

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