Electric spindle oil cylinder
By designing a positioning mechanism and shock absorbing mechanism in the electric spindle cylinder, the problems of difficulty in adjusting the expansion length of the hydraulic rod and excessive contact force in the prior art are solved, and flexible adjustment of the hydraulic rod and stable performance of the oil cylinder are achieved.
Patent Information
- Application Number
- CN202421629572.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-11
- Publication Date
- 2025-05-13
- Estimated Expiration
- 2034-07-11
AI Technical Summary
It is difficult for existing electric spindle cylinders to adjust the expansion length of the hydraulic rod, and the contact between the cylinder piston and the limit ring is too large, which can easily lead to the limit ring tilt.
An electric spindle cylinder is designed, adopting a positioning mechanism and a shock absorbing mechanism. The positioning mechanism includes a hydraulic rod, a buffer ring gasket, a disc spring and an outer brace column, and the expansion length of the hydraulic rod is adjusted by deformation of the disc spring. The shock absorbing mechanism includes a cylinder piston, limit ring, fastening hole and sleeve. The downforce of the cylinder piston is slowed down through buffer ring gaskets and disc springs to prevent direct hard contact between the cylinder piston and limit ring.
The flexible adjustment of the hydraulic rod is achieved, the flexibility of the hydraulic rod in control and adjustment is improved, the limit ring tilt is avoided, and the stable performance of the oil cylinder is ensured.
Smart Images
Figure CN222856733U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of electric spindles, in particular to an electric spindle oil cylinder. Background Art
[0002] The tool changing cylinder of the traditional electric spindle on the current market mainly uses the cylinder piston to directly push the pull rod installed inside the shaft core. The pull rod is displaced by the force, compressing the support disc spring. The support disc spring transmits the force to the shaft core. The shaft core is displaced by the force and finally transmits the force to the bearing to support the shaft core.
[0003] The spindle tool release mechanism realizes the automatic loosening and clamping of machine tool tools on the spindle. As one of the key components of machine tools, its structure and stability and other performance have always been one of the main considerations in machine tool design. When different hydraulic rods are deployed, it is difficult to adjust and control the deployment length of the cylinder rod according to the deployment requirements, which increases the difficulty of the cylinder rod in the adjustment process. Summary of the invention
[0004] The purpose of the utility model is to provide an electric spindle cylinder to solve the above-mentioned defects caused by the prior art.
[0005] The electric spindle cylinder comprises a cylinder housing, an oil outlet end is penetrated through one side of the cylinder housing, an oil inlet end is penetrated through one side of the cylinder housing, a sleeve is provided at the bottom end of the cylinder housing, a dust ring is provided inside the sleeve, a positioning mechanism is provided inside the cylinder housing, the positioning mechanism controls the extension size of the hydraulic rod and adjusts the expansion size of the cylinder, a shock absorbing mechanism is provided inside the cylinder housing, the shock absorbing mechanism reduces the downward pressure force of the cylinder piston to avoid direct hard contact between the cylinder piston and the limit ring.
[0006] Preferably, the positioning mechanism includes a hydraulic rod, a buffer ring washer, a disc spring and an external socket column. A cylinder piston is arranged at the top of the hydraulic rod, a buffer ring washer is arranged directly below the cylinder piston, a disc spring is distributed in a ring shape at the bottom end of the buffer ring washer, and an external socket column is arranged at the bottom end of the disc spring.
[0007] Preferably, the disc spring is connected to the top of the limiting ring through an outer sleeve column provided at the bottom end.
[0008] Preferably, the shock absorbing mechanism includes a cylinder piston, a limiting ring, a fastening hole and a sleeve. The cylinder piston is arranged inside the cylinder housing. A limiting ring is arranged directly below the cylinder piston. A hydraulic rod is connected to the inside of the limiting ring. Fastening holes are arranged at equal intervals on the outside of the limiting ring. Sleeves are arranged on both sides of the limiting ring, and the other side of the sleeve is connected to the inner wall of the cylinder housing.
[0009] Preferably, the limiting ring is connected to the inside of the oil cylinder housing through side positioning arms symmetrically arranged on both sides.
[0010] Preferably, the limiting ring contacts the bottom end of the oil cylinder piston via a buffer ring gasket arranged at the top end.
[0011] Preferably, fin plates are symmetrically arranged on both sides of the cylinder housing.
[0012] Compared with the prior art, the utility model has the following advantages:
[0013] 1. According to the setting of the broaching force and the spring stress-strain curve, the size of the loosening force required for the disc spring deformation is calculated, and the cross-sectional area of the cylinder cavity of the loosening cylinder and the size of the loosening oil pressure are designed and calculated. The piston can be pushed forward by the oil entering the rear cavity of the cylinder. After the piston chassis moves forward to the set size, the piston chassis contacts the hydraulic rod limit ring and continues to move forward to push the hydraulic rod forward to deform the disc spring. The cylinder of this design is small in size and has stable performance.
[0014] 2. During use, the bottom end of the buffer ring is positioned by the limit ring. During operation, the height of the buffer ring is adjusted to meet the adjustment of the extended length of the hydraulic rod, thereby improving the flexibility of the hydraulic rod in control and adjustment. The disc spring is used to decompress the cylinder piston set at the top of the hydraulic rod to avoid excessive contact force between the cylinder piston and the limit ring, which may cause the limit ring to tilt. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the utility model.
[0016] Figure 2 It is a schematic diagram of the front section structure of the oil cylinder housing in the utility model.
[0017] Figure 3 It is a schematic diagram of the top-sectional structure of the oil cylinder housing in the utility model.
[0018] Figure 4 It is a schematic diagram of the front section structure of the casing in the utility model.
[0019] Figure 5 It is a schematic diagram of the front section structure of the limiting ring in the utility model.
[0020] in:
[0021] 1. Cylinder housing; 2. Oil outlet; 3. Hydraulic rod; 4. Fin plate; 5. Oil inlet; 6. Positioning mechanism; 7. Cylinder piston; 8. Limiting ring; 9. Buffer ring; 10. Fastening hole; 11. Side positioning arm; 12. Shock absorption mechanism; 13. Dustproof ring; 14. Disc spring; 15. External socket column; 16. Casing. DETAILED DESCRIPTION
[0022] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.
[0023] like Figures 1 to 5 As shown, the electric spindle cylinder includes a cylinder housing 1, one side of the cylinder housing 1 is penetrated by an oil outlet end 2, one side of the cylinder housing 1 is penetrated by an oil inlet end 5, the bottom end of the cylinder housing 1 is provided with a sleeve 16, the interior of the sleeve 16 is provided with a dust ring 13, the interior of the cylinder housing 1 is provided with a positioning mechanism 6, the positioning mechanism 6 controls the extension size of the hydraulic rod 3 and adjusts the expansion size of the cylinder, the interior of the cylinder housing 1 is provided with a shock absorbing mechanism 12, the shock absorbing mechanism 12 reduces the downward pressure of the cylinder piston 7 to avoid direct hard contact between the cylinder piston 7 and the limit ring 8.
[0024] In this embodiment, the positioning mechanism 6 includes a hydraulic rod 3, a buffer ring gasket 9, a disc spring 14 and an external socket column 15. A cylinder piston 7 is arranged at the top of the hydraulic rod 3, and a buffer ring gasket 9 is arranged directly below the cylinder piston 7. A disc spring 14 is distributed in a ring shape at the bottom end of the buffer ring gasket 9, and an external socket column 15 is arranged at the bottom end of the disc spring 14. The hydraulic rod 3 pushes the disc spring 14 forward to deform, thereby adjusting and controlling the expansion size of the hydraulic rod 3.
[0025] In this embodiment, the disc spring 14 is connected to the top of the limiting ring 8 through an external sleeve column 15 provided at the bottom end. The bottom end of the disc spring 14 is positioned by the external sleeve column 15, and the size of the disc spring 14 is rotated and positioned according to the retraction requirements.
[0026] In this embodiment, the shock absorbing mechanism 12 includes a cylinder piston 7, a limiting ring 8, a fastening hole 10 and a sleeve 16. The cylinder piston 7 is arranged inside the cylinder housing 1. A limiting ring 8 is arranged directly below the cylinder piston 7. The hydraulic rod 3 is connected to the inside of the limiting ring 8. Fastening holes 10 are arranged at equal intervals on the outside of the limiting ring 8. Sleeves 16 are arranged on both sides of the limiting ring 8. The other side of the sleeve 16 is connected to the inner wall of the cylinder housing 1. The top end of the hydraulic rod 3 is limited by the cylinder piston 7 to prevent the hydraulic rod 3 from tilting.
[0027] In this embodiment, the limiting ring 8 is connected to the inside of the oil cylinder housing 1 through the side positioning arms 11 symmetrically arranged on both sides, and the inside of the oil cylinder housing 1 is positioned through the side positioning arms 11.
[0028] In this embodiment, the limiting ring 8 contacts the bottom end of the cylinder piston 7 via the buffer ring gasket 9 provided at the top, and the cylinder piston 7 is decompressed and limited by the buffer ring gasket 9.
[0029] In this embodiment, fin plates 4 are symmetrically arranged on both sides of the oil cylinder housing 1 , and the fin plates 4 are used to dissipate heat on both sides of the oil cylinder housing 1 .
[0030] This kind of electric spindle cylinder includes the following work contents in practical application:
[0031] Step 1: During use, by installing the limiting ring 8, the limiting ring 8 is positioned inside the oil cylinder housing 1, and then the unfolded size of the hydraulic rod 3 is adjusted, and the bolt is inserted into the inside of the fastening hole 10 opened on the outside of the limiting ring 8, so that the limiting ring 8 and the inside of the oil cylinder housing 1 are positioned, and the oil inlet end 5 and the oil outlet end 2 can be connected by pipeline, and the oil can be directly injected into the inside of the oil cylinder housing 1;
[0032] Step 2: inject oil into the interior of the oil cylinder housing 1, apply pressure to the surface of the oil cylinder piston 7 through the oil, apply pressure to the hydraulic rod 3 arranged at the bottom end through the oil cylinder piston 7, guide the hydraulic rod 3 by using the sleeve 16 arranged at the bottom end of the oil cylinder housing 1, limit and guide the hydraulic rod 3, and prevent external dust from entering the interior of the oil cylinder housing 1 as the hydraulic rod 3 retracts through the dustproof ring 13 arranged inside the sleeve 16;
[0033] Step 3: During the process of filling the hydraulic cylinder with oil, the heat of the oil is released through the fin plates 4 arranged on both sides, and the hydraulic rod 3 is pressurized by the buffer ring pad 9 arranged on one side through the cylinder piston 7, and one side of the buffer ring pad 9 is decompressed through the disc spring 14. When the hydraulic rod 3 retracts, the disc spring 14 is used to push one side of the cylinder piston 7 in the opposite direction, so that the hydraulic rod 3 retracts into the inside of the cylinder housing 1;
[0034] Step 4: During the retraction process, the bottom end of the disc spring 14 is positioned by the outer sleeve column 15, so that the disc spring 14 and the bottom end of the buffer ring 9 are positioned, and the buffer ring 9 is used to reduce the pressure on the bottom end of the hydraulic rod 3 and the cylinder piston 7. The side positioning arms 11 arranged on both sides of the limit ring 8 increase the strength of the connection to prevent the limit ring 8 from displacement or tilting during the limiting process.
[0035] Therefore, the embodiments disclosed above are only illustrative in all aspects and are not exclusive. All changes within the scope of the present invention or within the scope equivalent to the present invention are included in the present invention.
Claims
1. Electric spindle cylinder, characterized by: The invention comprises a cylinder housing (1), one side of the cylinder housing (1) is provided with an oil outlet end (2), one side of the cylinder housing (1) is provided with an oil inlet end (5), the bottom end of the cylinder housing (1) is provided with a sleeve (16), the interior of the sleeve (16) is provided with a dust ring (13), the interior of the cylinder housing (1) is provided with a positioning mechanism (6), the positioning mechanism (6) controls the extension size of the hydraulic rod (3) and adjusts the expansion size of the cylinder, and the interior of the cylinder housing (1) is provided with a shock absorbing mechanism (12), the shock absorbing mechanism (12) reduces the downward pressure of the cylinder piston (7) to avoid direct hard contact between the cylinder piston (7) and the limit ring (8).
2. The electric spindle cylinder according to claim 1, characterized in that: The positioning mechanism (6) comprises a hydraulic rod (3), a buffer ring washer (9), a disc spring (14) and an external socket column (15); a cylinder piston (7) is arranged at the top end of the hydraulic rod (3); a buffer ring washer (9) is arranged directly below the cylinder piston (7); a disc spring (14) is distributed in an annular manner at the bottom end of the buffer ring washer (9); and an external socket column (15) is arranged at the bottom end of the disc spring (14).
3. The electric spindle cylinder according to claim 2, characterized in that: The disc spring (14) is connected to the top of the limiting ring (8) via an outer sleeve column (15) provided at the bottom end.
4. The electric spindle cylinder according to claim 1, characterized in that: The shock absorbing mechanism (12) comprises a cylinder piston (7), a limiting ring (8), a fastening hole (10) and a sleeve (16); the cylinder piston (7) is arranged inside a cylinder housing (1); a limiting ring (8) is arranged directly below the cylinder piston (7); a hydraulic rod (3) is connected through the limiting ring (8); fastening holes (10) are arranged at equal intervals on the outside of the limiting ring (8); sleeves (16) are arranged on both sides of the limiting ring (8); and the other side of the sleeve (16) is connected to the inner wall of the cylinder housing (1).
5. The electric spindle cylinder according to claim 4, characterized in that: The limiting ring (8) is connected to the inside of the oil cylinder housing (1) via side positioning arms (11) symmetrically arranged on both sides.
6. The electric spindle cylinder according to claim 4, characterized in that: The limiting ring (8) contacts the bottom end of the oil cylinder piston (7) via a buffer ring pad (9) arranged at the top end.
7. The electric spindle cylinder according to claim 1, characterized in that: Fin plates (4) are symmetrically arranged on both sides of the oil cylinder housing (1).