一种高刚度高精度车刀升降装置
By using a laser rangefinder and a differential screw system driven by a hydraulic cylinder, precise adjustment and locking of the cutting tool height are achieved, solving the problems of low machining accuracy and insufficient rigidity in traditional methods, and improving the accuracy and stability of the cutting tool lifting device.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- EAST CHINA JIAOTONG UNIVERSITY
- Filing Date
- 2025-07-29
- Publication Date
- 2026-07-17
AI Technical Summary
In existing technologies, tool height adjustment is cumbersome and relies on manual experience, resulting in low machining accuracy and insufficient rigidity. Shims are prone to loosening, affecting machining quality. Traditional screw and wedge mechanisms have backlash and nonlinearity issues, making it difficult to achieve high-precision and high-rigidity tool height adjustment.
A laser rangefinder sensor is used in conjunction with a differential screw to achieve precise height measurement and adjustment. Combined with a hydraulic cylinder-driven tension block assembly, it ensures that the tool loading table is locked in the set position, preventing slippage and settlement, and improving rigidity and vibration resistance.
It enables precise adjustment of the cutting tool height, improves machining accuracy and rigidity, reduces vibration, and ensures the stability and accuracy of the cutting tool under high-precision and heavy-load cutting conditions.
Smart Images
Figure CN224508474U_ABST
Abstract
Claims
1. A high-rigidity, high-precision lathe tool lifting device, comprising a lifting and positioning mechanism and a loading platform height locking mechanism; characterized in that: The lifting and positioning mechanism includes a laser rangefinder (1), a base (2), a central stud (15), a differential screw (8), and a tool loading table (11). The central stud (15) is installed at the center of the base (2), the central stud (15) is installed inside the differential screw (8), the differential screw (8) is installed through the tool loading table (11), the tool loading table (11) is installed at the upper end of the base (2), and the laser range sensor (1) is installed on one side of the base (2). The loading platform height locking mechanism includes a bearing mechanism, four oil supply branch pipes (10), four hollow guide rods (12), four tensioning block assemblies (19), four tensioning knobs (20), four tensioning rods (21), four reset springs (22), and four push rod assemblies (23).
2. The high-rigidity and high-precision turning tool lifting device according to claim 1, characterized in that: Four hollow guide rods (12) are fixed at the four corners of the upper end of the base (2). Four tension rods (21) are respectively installed in the four hollow guide rods (12). A tension block assembly support frame (24) is installed in the hollow guide rods (12). The tension rods (21) are installed through the tension block assembly support frame (24). The tension block assembly (19) is installed at the upper end of the tension block assembly support frame (24). Four push rod assemblies (23) are respectively installed in the four tension block assemblies (19). The four push rod assemblies (23) are respectively connected to the four tension rods (21). The bearing mechanism is equipped with four hydraulic cylinders (7), and four tension knobs (20) are connected to the four hydraulic cylinders (7) respectively. The four tension knobs (20) are fixed to the upper ends of the four tension rods (21) respectively. Four return springs (22) are fixed to the lower ends of four tension rods (21).
3. The high-rigidity high-precision turning tool lifting device according to claim 1, characterized in that: The bearing mechanism includes a top plate (6), four hollow guide rods (12) are respectively installed through the four corners of the top plate (6), two hydraulic cylinders (7) located on the same side are a group, and each of the two groups of hydraulic cylinders (7) is provided with an oil pipe channel (9). Two oil supply branch pipes (10) are fixed at both ends of the oil pipe channel (9), and the two oil supply branch pipes (10) are fixedly connected to the hydraulic cylinder (7) on the same side.
4. The high-rigidity and high-precision turning tool lifting device according to claim 1, characterized in that: A cutting tool (3) is provided through one side of the tool loading platform (11). Three fastening bolts (4) are screwed at equal intervals on one side of the upper end of the tool loading platform (11). The lower end of the fastening bolts (4) abuts against the upper end of the cutting tool (3).
5. The high-rigidity and high-precision turning tool lifting device according to claim 1, characterized in that: A hydraulic control line pipe (17) and a pipeline channel (18) are provided through one side of the base (2). A control panel (14) is provided on one side of the base (2). A display screen (13) is installed on the upper end of the control panel (14). The control panel (14) is connected to the laser rangefinder (1) and the hydraulic cylinder (7) through the hydraulic control line pipe (17) and the pipeline channel (18).
6. The high-rigidity high-precision turning tool lifting device according to claim 2, characterized by: The push rod assembly (23) includes six push rods, which are divided into three groups. The three groups of push rods are fixed at equal intervals around the tension rod (21). The two push rods in each group are fixed on the tension rod (21) from top to bottom. The tension block assembly includes three tension blocks, which are fixedly connected to the three groups of push rods respectively.