High-rigidity power head directly driven by gear

Abstract

The utility model discloses a gear direct transmission high rigidity power head, including box body, and motor shaft and four main shaft rotatingly installed in the box body inner side, the motor shaft is located in box body inner side center, the back surface of box body is fixed with box cover, and the back surface of box cover is equipped with servo motor, and the four main shaft is located in the box body inner side center. The output end of the servo motor is connected with a motor shaft; the transmission device has the advantages that transmission efficiency is improved, intermediate links such as transition teeth are reduced by adopting the mode that the spiral gear directly drives the main shaft to rotate, energy loss is reduced, and the transmission efficiency is improved; by adopting the high-performance bearing, the rigidity and the supporting force of the power head are improved, so that the power head can bear heavier cutting load; the inner cavity of the main shaft is filled with stainless steel glass beads through the particle damping technology, vibration energy is converted into heat energy through friction and collision among particles, and therefore the vibration amplitude is reduced.

Description

Technical Field

[0001] This utility model belongs to the field of machine tool power head technology, specifically relating to a high-rigidity power head with direct gear transmission. Background Technology

[0002] In the field of machining, the power head is one of the core components of a machine tool, and its performance directly affects machining accuracy, efficiency, and quality. Traditional power heads, such as the ER20 and ER25 models, can meet basic needs in general machining scenarios, but they show obvious limitations when dealing with large, heavy-chip machining.

[0003] 1. Insufficient rigidity and weak clamping force:

[0004] Due to design limitations, traditional power heads have relatively small clamping force and rigidity, making it difficult to withstand the high loads and impacts generated during heavy cutting. This can lead to deformation or vibration of the power head when machining large workpieces or performing heavy cutting, which in turn affects machining accuracy and surface quality.

[0005] 2. Limited processing efficiency:

[0006] Due to insufficient rigidity, traditional power heads often need to reduce cutting parameters to ensure machining stability during heavy cutting and high-feed machining, which directly limits the improvement of machining efficiency. At the same time, frequent vibration and deformation also increase tool wear and replacement frequency, further increasing machining costs.

[0007] 3. Energy loss and transmission efficiency:

[0008] Traditional power head transmission systems often have intermediate links such as transition teeth, which increases energy loss and transmission chain complexity. This energy loss is particularly noticeable under high-speed rotation and heavy load conditions, reducing the overall transmission efficiency of the power head.

[0009] Therefore, this utility model proposes a high-rigidity power head with direct gear transmission. Utility Model Content

[0010] The purpose of this invention is to provide a high-rigidity power head for direct gear transmission, so as to solve the problems mentioned in the background art.

[0011] To achieve the above objectives, this utility model provides the following technical solution: a high-rigidity power head for direct gear transmission, comprising...

[0012] The enclosure includes a housing, a motor shaft rotatably mounted inside the housing, and four main shafts. The motor shaft is located at the center of the inner side of the housing. A cover is fixed to the rear surface of the housing, and a servo motor is mounted on the rear surface of the cover. The output end of the servo motor is connected to the motor shaft. Helical gears are locked to the rear end surfaces of the motor shaft and the main shafts, and adjacent helical gears mesh with each other.

[0013] Preferably, the front ends of both the motor shaft and the main shaft extend through to the front surface of the housing and are connected to a power head.

[0014] Preferably, it also includes front bearings and rear bearings disposed on the inner wall of the housing, with four front bearings disposed on the front surface of both the motor shaft and the main shaft, and two rear bearings disposed on the rear surface of both the motor shaft and the main shaft.

[0015] Preferably, the front bearing is an angular contact ball bearing and the rear bearing is a deep groove ball bearing.

[0016] Preferably, both the motor shaft and the main shaft have internal cavities filled with stainless steel glass beads, and a T-shaped threaded plug is provided at the front end of the internal cavity.

[0017] Preferably, the diameter of the stainless steel glass beads is 2-3 mm.

[0018] Preferably, the front end of the inner cavity is provided with a threaded groove that is compatible with the T-shaped threaded plug, and the T-shaped threaded plug is threadedly connected to the threaded groove.

[0019] Preferably, the T-shaped threaded plug has two annular rubber rings at its edge, and the inner wall of the threaded groove has two annular sealing grooves for the annular rubber rings to enter.

[0020] Compared with the prior art, the beneficial effects of this utility model are:

[0021] 1. Improve transmission efficiency: By using helical gears to directly drive the main shaft rotation, intermediate links such as transition teeth are reduced, energy loss is reduced, and transmission efficiency is improved.

[0022] 2. Enhance rigidity and support: By adopting high-performance bearings, the rigidity and support of the power head are improved, enabling it to withstand heavier cutting loads.

[0023] 3. Effectively suppress vibration: By using particle damping technology, stainless steel glass beads are filled into the inner cavity of the spindle. The vibration energy is converted into heat energy through friction and collision between the particles, thereby reducing the amplitude of vibration and improving machining accuracy and stability. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the structure of this utility model;

[0025] Figure 2 This is a sectional view of the main shaft of this utility model;

[0026] Figure 3 This utility model Figure 2 A magnified view of a portion of region A in the middle;

[0027] Figure 4 This utility model Figure 3 A magnified view of a portion of region B in the middle;

[0028] In the diagram: 1. Housing; 11. Housing cover; 2. Servo motor; 3. Motor shaft; 4. Spindle; 5. Front bearing; 6. Rear bearing; 7. Helical gear; 8. Power head; 91. Inner cavity; 92. Stainless steel glass ball; 93. T-shaped threaded plug; 931. Annular rubber ring; 94. Threaded groove; 941. Annular sealing groove. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0030] Example 1

[0031] Please see Figures 1 to 3 This is the first embodiment of the present invention, which provides a technical solution: a high-rigidity power head with direct gear transmission, comprising...

[0032] The enclosure 1 includes a motor shaft 3 and four main shafts 4 rotatably mounted inside the enclosure 1. The motor shaft 3 is located at the center of the inner side of the enclosure 1. A cover 11 is fixed to the rear surface of the enclosure 1, and a servo motor 2 is mounted on the rear surface of the cover 11. The output end of the servo motor 2 is connected to the motor shaft 3. The rear end surfaces of both the motor shaft 3 and the main shafts 4 are locked with helical gears 7, and two adjacent helical gears 7 mesh with each other, so that the output end of the servo motor 2 can directly transmit power to the motor shaft 3, and the motor shaft 3 directly and efficiently transmits power to the main shafts 4 through the helical gears 7, without transition teeth, thus reducing energy loss.

[0033] In this embodiment, preferably, the front ends of both the motor shaft 3 and the main shaft 4 extend through to the front surface of the housing 1 and are connected to the power head 8.

[0034] In this embodiment, preferably, it also includes a front bearing 5 and a rear bearing 6 disposed on the inner wall of the housing 1. The front surfaces of the motor shaft 3 and the main shaft 4 are each provided with four front bearings 5, and the rear surfaces of the motor shaft 3 and the main shaft 4 are each provided with two rear bearings 6, which can effectively support the motor shaft 3 and the main shaft 4 and improve the rigidity and support force of the motor shaft 3 and the main shaft 4.

[0035] In this embodiment, preferably, the front bearing 5 is an angular contact ball bearing with a 45mm diameter and the rear bearing 6 is a deep groove ball bearing with a 35mm diameter.

[0036] In this embodiment, preferably, both the motor shaft 3 and the spindle 4 have an inner cavity 91, which is filled with stainless steel glass beads 92. During machine tool processing, the motor shaft 3 and the spindle 4 may vibrate when rotating at high speed, which will affect the processing accuracy. This utility model adds an inner cavity 91 to the motor shaft 3 and the spindle 4, fills it with stainless steel glass beads 92, and blocks it with a T-shaped threaded plug 93. By using particle damping technology, the vibration energy is converted into heat energy through the friction and collision between the stainless steel glass beads 92 particles, thereby reducing the vibration amplitude of the motor shaft 3 and the spindle 4. A T-shaped threaded plug 93 is provided at the front end of the inner cavity 91 to seal the opening at the front end of the inner cavity 91.

[0037] In this embodiment, preferably, the diameter of the stainless steel glass bead 92 is 2mm.

[0038] In this embodiment, preferably, the front end of the inner cavity 91 is provided with a threaded groove 94 that is adapted to the T-shaped threaded plug 93, and the T-shaped threaded plug 93 is threadedly connected to the threaded groove 94 for easy locking and installation of the T-shaped threaded plug 93.

[0039] Example 2

[0040] Please see Figures 1 to 4 This is the second embodiment of the present invention, which provides a technical solution: a high-rigidity power head with direct gear transmission, comprising...

[0041] The enclosure 1 includes a motor shaft 3 and four main shafts 4 rotatably mounted inside the enclosure 1. The motor shaft 3 is located at the center of the inner side of the enclosure 1. A cover 11 is fixed to the rear surface of the enclosure 1, and a servo motor 2 is mounted on the rear surface of the cover 11. The output end of the servo motor 2 is connected to the motor shaft 3. The rear end surfaces of both the motor shaft 3 and the main shafts 4 are locked with helical gears 7, and two adjacent helical gears 7 mesh with each other, so that the output end of the servo motor 2 can directly transmit power to the motor shaft 3, and the motor shaft 3 directly and efficiently transmits power to the main shafts 4 through the helical gears 7, without transition teeth, thus reducing energy loss.

[0042] In this embodiment, preferably, the front ends of both the motor shaft 3 and the main shaft 4 extend through to the front surface of the housing 1 and are connected to the power head 8.

[0043] In this embodiment, preferably, it also includes a front bearing 5 and a rear bearing 6 disposed on the inner wall of the housing 1. The front surfaces of the motor shaft 3 and the main shaft 4 are each provided with four front bearings 5, and the rear surfaces of the motor shaft 3 and the main shaft 4 are each provided with two rear bearings 6, which can effectively support the motor shaft 3 and the main shaft 4 and improve the rigidity and support force of the motor shaft 3 and the main shaft 4.

[0044] In this embodiment, preferably, the front bearing 5 is an angular contact ball bearing with a 45mm diameter and the rear bearing 6 is a deep groove ball bearing with a 35mm diameter.

[0045] In this embodiment, preferably, both the motor shaft 3 and the spindle 4 have an inner cavity 91, which is filled with stainless steel glass beads 92. During machine tool processing, the motor shaft 3 and the spindle 4 may vibrate when rotating at high speed, which will affect the processing accuracy. This utility model adds an inner cavity 91 to the motor shaft 3 and the spindle 4, fills it with stainless steel glass beads 92, and blocks it with a T-shaped threaded plug 93. By using particle damping technology, the vibration energy is converted into heat energy through the friction and collision between the stainless steel glass beads 92 particles, thereby reducing the vibration amplitude of the motor shaft 3 and the spindle 4. A T-shaped threaded plug 93 is provided at the front end of the inner cavity 91 to seal the opening at the front end of the inner cavity 91.

[0046] In this embodiment, preferably, the diameter of the stainless steel glass bead 92 is 2mm.

[0047] In this embodiment, preferably, the front end of the inner cavity 91 is provided with a threaded groove 94 that is adapted to the T-shaped threaded plug 93, and the T-shaped threaded plug 93 is threadedly connected to the threaded groove 94 for easy locking and installation of the T-shaped threaded plug 93.

[0048] In this embodiment, preferably, two annular rubber rings 931 are provided at the edge of the T-shaped threaded plug 93, and two annular sealing grooves 941 are opened on the inner wall of the threaded groove 94 for the annular rubber rings 931 to enter. After the T-shaped threaded plug 93 is locked inside the threaded groove 94 to seal the inner cavity 91, the two annular rubber rings 931 will be squeezed into the annular sealing grooves 941 to form two annular sealing structures, preventing external cutting fluid and other liquids from seeping into the inner cavity 91 during subsequent processing, thus playing a sealing and protective role. The annular rubber rings 931 are made of fluororubber.

[0049] Although embodiments of the present invention have been shown and described (see the detailed description above), it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A high-rigidity power head for direct gear transmission, characterized in that: include The housing (1) includes a motor shaft (3) and four main shafts (4) rotatably mounted inside the housing (1). The motor shaft (3) is located at the center of the inner side of the housing (1). A cover (11) is fixed to the rear surface of the housing (1), and a servo motor (2) is mounted on the rear surface of the cover (11). The output end of the servo motor (2) is connected to the motor shaft (3). The rear end surfaces of the motor shaft (3) and the main shafts (4) are locked with helical gears (7), and two adjacent helical gears (7) mesh with each other.

2. The high-rigidity power head for direct gear transmission according to claim 1, characterized in that: The front ends of the motor shaft (3) and the main shaft (4) both extend through the front surface of the housing (1) and are connected to the power head (8).

3. The high-rigidity power head for direct gear transmission according to claim 1, characterized in that: It also includes a front bearing (5) and a rear bearing (6) disposed on the inner wall of the housing (1). The front surfaces of the motor shaft (3) and the main shaft (4) are each provided with four front bearings (5), and the rear surfaces of the motor shaft (3) and the main shaft (4) are each provided with two rear bearings (6).

4. A high-rigidity power head for direct gear transmission according to claim 3, characterized in that: The front bearing (5) is an angular contact ball bearing, and the rear bearing (6) is a deep groove ball bearing.

5. A high-rigidity power head for direct gear transmission according to claim 1, characterized in that: The motor shaft (3) and the main shaft (4) are both provided with an inner cavity (91), and the inner cavity (91) is filled with stainless steel glass beads (92). A T-shaped threaded plug (93) is provided at the front end of the inner cavity (91).

6. A high-rigidity power head for direct gear transmission according to claim 5, characterized in that: The diameter of the stainless steel glass beads (92) is 2-3 mm.

7. A high-rigidity power head for direct gear transmission according to claim 5, characterized in that: The front end of the inner cavity (91) is provided with a threaded groove (94) that is compatible with the T-shaped threaded plug (93), and the T-shaped threaded plug (93) is threadedly connected to the threaded groove (94).

8. A high-rigidity power head for direct gear transmission according to claim 7, characterized in that: Two annular rubber rings (931) are provided at the edge of the T-shaped threaded plug (93), and two annular sealing grooves (941) are opened on the inner wall of the threaded groove (94) for the annular rubber rings (931) to enter.

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