Tool setting device
Precise positioning of turbine blades is achieved by using electric push rods and mechanical indicator components, which solves the error problem introduced by manual tool setting and improves machining accuracy and efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-28
- Publication Date
- 2026-03-06
AI Technical Summary
In the current turbine blade machining process, manual tool setting is prone to human error, resulting in insufficient repeatability and making it difficult to meet the requirements of high-precision machining.
By employing components such as an electric push rod, a rectangular contact plate, a vertical rod, and a rectangular horizontal placement plate, precise positioning of the center horizontal position is achieved. Combined with mechanical indication, human error is eliminated, and positioning accuracy is improved.
By using a mechanical and intuitive instruction method, tool position data can be obtained quickly and accurately, greatly improving processing efficiency and precision, and meeting the processing requirements of high-precision steam turbine blades.
Smart Images
Figure CN223971355U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of turbine blade processing technology, and in particular to a tool setting device. Background Technology
[0002] Steam turbine blades have complex structures, often featuring torsional free-form surfaces, and require extremely high machining precision. The machining quality of the blades directly affects the working efficiency and reliability of the steam turbine. Therefore, tool setting operations can accurately establish the connection between the workpiece coordinate system and the machine tool coordinate system, thereby ensuring the positioning accuracy of the tool and the accuracy of the machining path during the machining process, and avoiding machining errors caused by tool position deviations.
[0003] In existing technologies, the tool setting process often involves manual trial cutting, feeler gauge measurement, or simple tool setting blocks. The operator's experience and skill level directly affect the tool setting accuracy and are prone to human error (such as visual deviation and tactile error), resulting in insufficient repeatability (usually only ±0.05mm), which makes it difficult to meet the high-precision machining requirements of blade tenons and grooves, blade curved surfaces, etc. Therefore, we propose a tool setting device to solve the above problems. Utility Model Content
[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a tool setting device.
[0005] To achieve the above objectives, the present invention adopts the following technical solution:
[0006] A tool setting device includes a chassis, a worktable fixedly connected inside the chassis, an electric push rod fixedly connected inside the chassis, a rectangular contact plate fixedly connected to the top of the output end of the electric push rod, two vertical rods fixedly connected to the top of the rectangular contact plate, a same rectangular horizontal plate fixedly connected to the top of the two vertical rods, a bottom cover fixedly connected to the top of the rectangular horizontal plate, a threaded ring fixedly connected to the top of the bottom cover, a calibration cylinder threaded onto the outer wall of the threaded ring, a circular plate slidably connected inside the calibration cylinder, a telescopic cylinder fixedly connected to the top of the circular plate, and a tool setting assembly inside the chassis.
[0007] Preferably, the tool setting assembly includes a guide post, the top of the bottom cover is fixedly connected to the bottom of the guide post, a spring is sleeved on the outer wall of the guide post, the top of the spring is pressed against the bottom of the circular plate, the bottom of the spring is pressed against the top of the bottom cover, and the outer wall of the telescopic cylinder is provided with multiple scale lines, and the reference surface for measuring the drill bit during machining is set by the tool setting assembly.
[0008] Preferably, two turbine blade clamps are installed on the top of the workbench, and a drill bit is installed inside the casing.
[0009] Preferably, the outer wall of the workbench has two circular holes, and the inner walls of the two circular holes are slidably connected to the outer walls of the two vertical rods, respectively, so that the vertical rods can move up and down by setting the circular holes.
[0010] Preferably, the top of the calibration cylinder is provided with a sliding hole, and the inner wall of the sliding hole is slidably connected to the outer wall of the telescopic cylinder.
[0011] Preferably, both the circular plate and the telescopic cylinder have through holes at their bottoms, and the inner wall of the through hole is slidably connected to the outer wall of the guide post.
[0012] Preferably, the outer wall of the chassis has two sliding doors.
[0013] Compared with the prior art, the advantages of this utility model are:
[0014] This solution achieves center horizontal positioning by setting up an electric push rod, a rectangular contact plate, a vertical rod, and a rectangular horizontal placement plate, eliminating human error factors in traditional manual tool setting. Through intuitive mechanical indication, operators can quickly and accurately obtain tool position data, greatly improving work efficiency. The overall structure is compact and reasonable, and the operation is simple. It retains the intuitiveness of mechanical tool setting while achieving a level of precision close to that of automated equipment. Attached Figure Description
[0015] To more clearly illustrate the technical solution of this utility model, the drawings used in the description of the specific embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0016] Figure 1 This is a three-dimensional structural diagram of a tool setting device proposed in this utility model;
[0017] Figure 2 This is a cross-sectional structural diagram of a tool setting device proposed in this utility model;
[0018] Figure 3 This utility model proposes a tool setting device. Figure 2 A magnified structural diagram of part A in the diagram;
[0019] Figure 4 This is a partial three-dimensional structural diagram of a tool-setting device proposed in this utility model.
[0020] In the diagram: 1. Chassis; 2. Workbench; 3. Turbine blade clamp; 4. Drill bit; 5. Electric push rod; 6. Rectangular contact plate; 7. Vertical rod; 8. Rectangular horizontal placement plate; 9. Bottom cover; 10. Threaded ring; 11. Calibration cylinder; 12. Circular plate; 13. Telescopic cylinder; 14. Spring; 15. Guide post; 16. Opening and closing door; 17. Scale line. Detailed Implementation
[0021] 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 skilled in the art without creative effort are within the protection scope of the present utility model.
[0022] Depend on Figures 1-4 As shown, a tool setting device is disclosed, including a housing 1, a worktable 2 fixedly connected inside the housing 1, two turbine blade clamps 3 mounted on the top of the worktable 2, a drill bit 4 installed inside the housing 1, and an electric push rod 5 fixedly connected inside the housing 1. The electric push rod 5 serves as a power source and achieves precise lifting and lowering through servo control, pushing subsequent components to a preset position.
[0023] A rectangular contact plate 6 is fixedly connected to the top of the output end of the electric push rod 5. When the rectangular contact plate 6 contacts the bottom of the worktable 2, it forms a hard limit to ensure the consistency of the reference surface for each calibration. Two vertical rods 7 are fixedly connected to the top of the rectangular contact plate 6. Two round holes are opened on the outer wall of the worktable 2. The inner walls of the two round holes are slidably connected to the outer walls of the two vertical rods 7 respectively. The vertical rods 7 and the round holes of the worktable 2 are matched with high-precision sliding bearings to prevent the rectangular horizontal plate 8 from tilting.
[0024] The tops of the two vertical rods 7 are fixedly connected to the same rectangular horizontal plate 8. The rectangular horizontal plate 8 is made of marble or alloy steel and serves as the reference carrier for tool setting. The top of the rectangular horizontal plate 8 is fixedly connected to the bottom cover 9 by existing screws. The bottom cover 9 and the rectangular horizontal plate 8 are detachably installed.
[0025] A threaded ring 10 is fixedly connected to the top of the bottom cover 9. A calibration cylinder 11 is threadedly fitted on the outer wall of the threaded ring 10. A circular plate 12 is slidably connected inside the calibration cylinder 11. A telescopic cylinder 13 is fixedly connected to the top of the circular plate 12. A sliding hole is opened on the top of the calibration cylinder 11, and the inner wall of the sliding hole is slidably connected to the outer wall of the telescopic cylinder 13.
[0026] The machine housing 1 is equipped with a tool setting assembly, which includes a guide post 15. The top of the bottom cover 9 is fixedly connected to the bottom of the guide post 15. The bottom of the circular plate 12 and the telescopic cylinder 13 are both provided with through holes. The inner wall of the through hole is slidably connected to the outer wall of the guide post 15. The outer wall of the guide post 15 is fitted with a spring 14. The spring 14 ensures that the drill bit 4 is slowed down when it comes into contact. The top of the spring 14 is pressed against the top of the circular plate 12, and the bottom of the spring 14 is pressed against the top of the bottom cover 9. The bottom cover 9 can be rotated by the threaded ring 10 to periodically replace the internal spring 14. The outer wall of the telescopic cylinder 13 is provided with multiple scale lines 17. The outer wall of the machine housing 1 is slidably connected with two opening and closing doors 16. The outer wall of the machine housing 1 is provided with upper and lower guide rails. The opening and closing doors 16 are connected to the guide rails by sliders.
[0027] Working principle: When calibrating the machining plane of the turbine blades during processing, the electric push rod 5 drives the rectangular contact plate 6 to rise and fall. The rise and fall of the rectangular contact plate 6 drives the two vertical rods 7 to rise, and the rise of the two vertical rods 7 drives the rectangular horizontal placement plate 8 to rise. Since the two turbine blade clamps 3 are on the same horizontal plane, the center horizontal position between them is fixed. When the rectangular contact plate 6 contacts the bottom of the worktable 2, the two vertical rods 7 drive the rectangular horizontal placement plate 8 to the center horizontal position. This step can be calibrated in advance to meet the needs of subsequent multiple uses. The rectangular horizontal placement plate 8 drives the calibration cylinder 11 and the telescopic cylinder 13 to move synchronously, moving the drill bit 4 to the top of the telescopic cylinder 13. After the drill bit 4 moves downward, the bottom of the drill bit 4 contacts the top of the telescopic cylinder 13 and continues to press down. By observing the scale line 17, the downward movement distance of the telescopic cylinder 13 is judged, and the distance between the bottom of the drill bit 4 and the center horizontal position is measured (i.e., the Z-axis tool setting value).
[0028] All standard parts used in this utility model can be purchased from the market. Irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art. In addition, the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here. Furthermore, the structure and principle of the components known to those skilled in the art can be learned by those skilled in the art through technical manuals or conventional experimental methods.
[0029] Although embodiments of this application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A tool setting device comprising a housing (1), characterized in that The inside of the case (1) is fixedly connected with a workbench (2), the inside of the case (1) is fixedly connected with an electric push rod (5), the top of the output end of the electric push rod (5) is fixedly connected with a rectangular contact plate (6), the top of the rectangular contact plate (6) is fixedly connected with two vertical rods (7), the top of the two vertical rods (7) is fixedly connected with the same rectangular horizontal placement plate (8), the top of the rectangular horizontal placement plate (8) is fixedly connected with a bottom cover (9), the top of the bottom cover (9) is fixedly connected with a threaded ring (10), the outer wall of the threaded ring (10) is threadedly sleeved with a calibration cylinder (11), the inside of the calibration cylinder (11) is slidably connected with a circular plate (12), the top of the circular plate (12) is fixedly connected with a telescopic cylinder (13), the inside of the case (1) is provided with a tool setting assembly.
2. The tool setting device according to claim 1, wherein The tool setting assembly comprises a guide column (15), the top of the bottom cover (9) is fixedly connected with the bottom of the guide column (15), the outer wall of the guide column (15) is sleeved with a spring (14), the top of the spring (14) is pressed against the bottom of the circular plate (12), the bottom of the spring (14) is pressed against the top of the bottom cover (9), the outer wall of the telescopic cylinder (13) is provided with a plurality of scale lines (17).
3. The tool setting device according to claim 1, wherein The top of the workbench (2) is mounted with two steam turbine blade clamps (3), the inside of the case (1) is mounted with a drill bit (4).
4. The tool setting device according to claim 1, wherein The outer wall of the workbench (2) is provided with two circular holes, the inner walls of the two circular holes are slidably connected with the outer walls of the two vertical rods (7) respectively.
5. The tool setting device according to claim 2, wherein The top of the calibration cylinder (11) is provided with a sliding hole, the inner wall of the sliding hole is slidably connected with the outer wall of the telescopic cylinder (13).
6. The tool setting device according to claim 2, wherein The bottom of the circular plate (12) and the bottom of the telescopic cylinder (13) are both provided with through holes, the inner walls of the through holes are slidably connected with the outer wall of the guide column (15).
7. The tool setting device according to claim 1, wherein The outer wall of the case (1) is slidably connected with two opening and closing doors (16).