Horizontal numerical control head boring and turning cable and oil circuit slip ring mechanism

Abstract

This utility model relates to the field of CNC machine tool accessories, and more particularly to a cable and hydraulic slip ring mechanism for a horizontal CNC boring machine. It includes a stator housing, a rotor shaft, a slip ring conductive ring assembly, an hydraulic rotary joint, a bearing assembly, a sliding seal ring, internal oil passages, and radial positioning pins. The stator housing is fixedly installed, and the rotor shaft is rotatably mounted within it, with a through oil passage inside. The slip ring conductive ring assembly is positioned between the rotor shaft and the stator housing to transmit electrical signals. The hydraulic rotary joint is hollow and sleeved on the tail of the rotor shaft. It is supported by bearings and limited by radial positioning pins to the stator housing, ensuring it remains stationary when the rotor shaft rotates. A sliding seal ring is provided between the hydraulic rotary joint and the rotor shaft to achieve a sealed connection of the rotating oil passages. This utility model has a compact structure, can simultaneously achieve stable transmission of cable signals and hydraulic oil, avoids oil pipe entanglement, and is suitable for the operating environment of horizontal CNC boring machines.

Description

Technical Field

[0001] This utility model relates to the field of CNC machine tool accessories technology, and in particular to a cable and oil circuit slip ring mechanism for a horizontal CNC head boring machine. Background Technology

[0002] A horizontal CNC head-aligning boring machine is a type of CNC machine tool used for machining high-precision heavy parts. Its spindle system typically requires synchronous transmission of cable signals and hydraulic oil during high-speed rotation to perform functions such as tool position control, cooling and lubrication, and hydraulic clamping. In such equipment, slip ring devices are widely used to achieve electrical signal transmission between the stator and rotating components, while rotary joints are used to achieve rotary connections for hydraulic or cooling oil circuits.

[0003] However, existing slip ring devices and rotary oil circuit interfaces are mostly independent structures, with scattered installation locations, complex wiring, and large overall space requirements. Furthermore, because the oil pipes are directly connected to the rotating components, they are prone to tangling, fatigue, or leakage during spindle rotation, severely affecting the stability and safety of the equipment. In addition, existing rotary connection structures generally lack reliable anti-rotation mechanisms, causing the oil circuit interface to easily lose its relative stationary state during high-speed operation, leading to interface loosening or mechanical interference. Therefore, it is essential to design a cable and oil circuit slip ring mechanism for horizontal CNC head boring machines. Utility Model Content

[0004] The purpose of this invention is to provide a horizontal CNC head boring machine cable and oil circuit slip ring mechanism to solve the problems mentioned in the background art.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a cable and oil circuit slip ring mechanism for a horizontal CNC head-to-head boring machine, comprising: a stator housing, wherein the stator housing is a hollow structure and is used for fixed installation on a horizontal CNC head-to-head boring machine;

[0006] The rotor shaft is rotatably disposed within the stator housing and has a through internal oil passage.

[0007] A slip ring conductive ring assembly is disposed between the rotor shaft and the stator housing for transmitting electrical signals;

[0008] The oil circuit rotary joint is a hollow structure that is sleeved on the outer circumference of the tail of the rotor shaft for connection with external oil circuits.

[0009] A bearing assembly is disposed between the oil circuit rotary joint and the rotor shaft to support the oil circuit rotary joint so that it can rotate relative to the rotor shaft;

[0010] A sliding sealing ring is disposed in the gap between the oil circuit rotary joint and the rotor shaft to seal the connection between the internal oil passage and the external oil passage.

[0011] A radial locating pin is disposed between the oil circuit rotary joint and the stator housing to restrict the circumferential rotation of the oil circuit rotary joint, so that it remains stationary when the rotor shaft rotates.

[0012] According to the above technical solution, the slip ring conductive ring assembly includes multiple conductive rings, which are spaced apart along the rotor shaft and respectively contact the brush assembly.

[0013] According to the above technical solution, the outer wall of the oil circuit rotary joint is provided with an insertion hole, the stator housing is provided with a limiting hole at a corresponding position, and the radial positioning pin is inserted between the two.

[0014] According to the above technical solution, the stator housing is provided with a cable interface for cable introduction and is electrically connected to the slip ring conductive ring assembly.

[0015] According to the above technical solution, the bearing assembly is a double-row deep groove ball bearing, which is used to bear the radial and axial loads of the oil circuit rotary joint during rotation.

[0016] Compared with existing technologies, the beneficial effects achieved by this utility model are as follows: This utility model, by providing a rotatable rotor shaft and a matching slip ring conductive ring assembly, achieves reliable transmission of electrical signals during spindle rotation; by providing a hollow oil circuit rotary joint outside the rotor shaft, and by setting a bearing assembly and a sliding seal ring between the interface and the rotor shaft, a sealed connection is achieved between the internal oil passages of the rotating spindle and the external stationary oil passages; furthermore, by setting a radial positioning pin to connect the oil circuit rotary joint to the stator housing to prevent rotation, the oil circuit rotary joint remains stationary when the rotor rotates, avoiding the risks of external oil pipe entanglement and loosening. The above structure enables the slip ring mechanism to simultaneously provide electrical signal transmission and ensure stable connection of the hydraulic oil circuit. It features a compact structure and high integration, making it particularly suitable for the needs of horizontal CNC head-mounted boring machines for coordinated transmission of electrical and hydraulic systems, effectively improving the reliability of equipment operation and ease of maintenance. Attached Figure Description

[0017] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0018] Figure 1 This is a schematic diagram of the overall structure of a horizontal CNC head-to-head boring machine cable and oil circuit slip ring mechanism proposed in this utility model;

[0019] Figure 2 This is a cross-sectional view of a horizontal CNC head-to-head boring machine cable and oil circuit slip ring mechanism proposed in this utility model;

[0020] Figure 3 This is a schematic diagram of the radial positioning pin connection relationship in the cable and oil circuit slip ring mechanism of a horizontal CNC head boring machine proposed in this utility model.

[0021] In the diagram: 1. Oil circuit rotary joint, 2. Rotor shaft, 3. Bearing assembly, 4. Stator housing, 5. Sliding seal ring, 6. Internal oil passage, 7. Slip ring conductive ring assembly, 8. Radial locating pin. Detailed Implementation

[0022] 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.

[0023] Example:

[0024] Reference Figure 1-3 A horizontal CNC head boring machine cable and oil circuit slip ring mechanism includes an oil circuit rotary joint 1, a rotor shaft 2, a bearing assembly 3, a stator housing 4, a sliding seal ring 5, an internal oil passage 6, a slip ring conductive ring assembly 7, and a radial positioning pin 8.

[0025] The stator housing 4 is a hollow cylindrical structure, fixedly installed at the rear support of a horizontal boring machine. Its interior has a mounting cavity for installing cable entry channels and slip ring assemblies. A rotatable rotor shaft 2 is housed in the axial through hole of the stator housing 4. The front end of the rotor shaft 2 is coaxially connected to the main shaft or rotation system for rotating with the main shaft. The rotor shaft 2 is hollow, and its interior has a through-hole internal oil passage 6 for conveying lubricating oil or cooling oil.

[0026] A slip ring conductive ring assembly 7 is fitted around the outer periphery of the rotor shaft 2. The slip ring conductive ring assembly 7 is electrically connected to the brush plate or brush system on the stator side to realize reliable transmission of electrical signals from the stator to the rotor.

[0027] A bearing assembly 3 is provided between the outside of the rotor shaft 2 and the stator housing 4. The bearing assembly 3 is a double-row deep groove ball bearing and is installed in the annular cavity inside the stator housing 4. It is used to support the axial and radial loads of the rotor shaft 2 during rotation, while ensuring smooth rotation.

[0028] An oil passage rotary joint 1 is fitted around the rear end of the rotor shaft 2. This oil passage rotary joint 1 is a cylindrical hollow structure, with one end having a threaded connector or clamp interface for connecting to an external oil pipe, and the other end hollowly fitted onto the outer surface of the rear end of the rotor shaft 2. The oil passage rotary joint 1 is supported on the rotor shaft 2 by a bearing assembly 3 and is fixed in place by a radial locating pin 8 positioned between the oil passage rotary joint 1 and the stator housing 4. The radial locating pin 8 is inserted between a hole on the outer wall of the oil passage rotary joint 1 and a mating hole on the stator housing 4, forming a rotation-stopping and limiting fit. Therefore, when the rotor shaft 2 rotates, the oil passage rotary joint 1 remains stationary and does not rotate with the rotor.

[0029] In order to achieve reliable sealing of the oil between the rotating and stationary structures, a sliding sealing ring 5 is also provided between the oil circuit rotary joint 1 and the rotor shaft 2. The sliding sealing ring 5 is located in the sealing groove between the inner cavity of the oil circuit rotary joint 1 and the outer wall of the rotor shaft 2. It is made of wear-resistant polymer material or fluororubber material and can maintain the oil circuit seal in a relatively sliding state to prevent oil leakage.

[0030] This invention provides a stationary oil circuit rotary joint 1 outside the rotor shaft 2, which is used in conjunction with a sliding sealing ring 5 and a radial positioning pin 8. This allows the slip ring structure to achieve both electrical signal transmission during rotation and dynamic sealing connection between the rotating spindle and the stationary oil circuit, thereby meeting the requirements of horizontal CNC head boring machine for simultaneous transmission of cable signals and hydraulic oil during operation.

[0031] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0032] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A cable and oil circuit slip ring mechanism for a horizontal CNC head-to-head boring machine, characterized in that, include: Stator housing (4), the stator housing is a hollow structure, used for fixed installation on a horizontal CNC head-mounted boring machine; The rotor shaft (2) is rotatably disposed inside the stator housing (4) and has a through internal oil passage (6). The slip ring conductive ring assembly (7) is disposed between the rotor shaft (2) and the stator housing (4) for realizing electrical signal transmission; The oil circuit rotary joint (1) is a hollow structure, which is sleeved on the outer circumference of the tail of the rotor shaft (2) for connecting with the external oil circuit; The bearing assembly (3) is disposed between the oil circuit rotary joint (1) and the rotor shaft (2) to support the oil circuit rotary joint (1) so that it can rotate relative to the rotor shaft (2); A sliding sealing ring (5) is provided in the gap between the oil circuit rotary joint (1) and the rotor shaft (2) to seal the connection between the internal oil passage (6) and the external oil passage; A radial positioning pin (8) is provided between the oil circuit rotary joint (1) and the stator housing (4) to restrict the oil circuit rotary joint (1) from rotating circumferentially, so that it remains stationary when the rotor shaft (2) rotates.

2. The horizontal CNC head-mounted boring machine cable and oil circuit slip ring mechanism according to claim 1, characterized in that, The slip ring conductive ring assembly (7) includes multiple conductive rings, which are spaced apart along the rotor shaft (2) and respectively contact the brush assembly.

3. The horizontal CNC head-mounted boring machine cable and oil circuit slip ring mechanism according to claim 1, characterized in that, The outer wall of the oil circuit rotary joint (1) is provided with an insertion hole, the stator housing (4) is provided with a limiting hole at the corresponding position, and the radial positioning pin (8) is inserted between the two.

4. The horizontal CNC head-mounted boring machine cable and oil circuit slip ring mechanism according to claim 1, characterized in that, The stator housing (4) is provided with a cable interface for cable introduction and is electrically connected to the slip ring conductive ring assembly (7).

5. The horizontal CNC head-mounted boring machine cable and oil circuit slip ring mechanism according to claim 1, characterized in that, The bearing assembly (3) is a double-row deep groove ball bearing used to bear the radial and axial loads of the oil circuit rotary joint (1) during rotation.

Images