Novel hydraulic automatic clamp with built-in oil way
By introducing level and pressure sensors into the internal hydraulic automatic clamping system, the clamping coordinates are automatically set, solving the problem of needing to adjust before workpiece fixation. This achieves efficient and precise workpiece fixation, improving production efficiency and product quality.
Patent Information
- Application Number
- CN202520416009.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-11
- Publication Date
- 2026-02-03
- Estimated Expiration
- 2035-03-11
AI Technical Summary
Existing hydraulic automatic clamps with built-in oil circuits require adjustment of the clamps based on the workpiece parameters before fixing the workpiece, which leads to complicated operation and affects work efficiency.
The design employs a liquid level sensor and a pressure sensor in conjunction with a guide hydraulic oil pipe and a recovery cylinder. The clamping coordinates are automatically set through the workpiece clamping action, eliminating the need for manual adjustment and enabling adaptation to workpieces of different heights.
It improves the efficiency and precision of the workpiece fixing process, reduces the number of operation steps, and enhances production efficiency and product quality consistency.
Smart Images
Figure CN223863623U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of clamping technology, and in particular to a novel hydraulic automatic clamp with an internal oil circuit. Background Technology
[0002] When the internally-connected hydraulic automatic clamp is in operation, the control system sends a clamping signal, the hydraulic pump starts, and hydraulic oil is drawn from the tank and delivered to the hydraulic cylinder through the internal oil circuit system. The hydraulic oil generates pressure within the cylinder, pushing the piston rod outward. The piston rod, through connecting components, moves the clamping elements of the clamp body, thus clamping the workpiece. When it is necessary to release the workpiece, the control system sends a release signal. Under pressure, the hydraulic oil in the cylinder flows back to the tank, the piston rod retracts, and the clamping elements of the clamp body release the workpiece.
[0003] The built-in hydraulic automatic clamping fixture can provide a strong clamping force to ensure that the workpiece remains stable during processing and is not prone to displacement or vibration. Through the precise design of the positioning elements and the hydraulic control system, it can achieve high-precision positioning of the workpiece and meet the requirements of various precision machining.
[0004] However, when fixing the workpieces, since the workpieces are of different heights, the fixture needs to be adjusted according to the parameters of the workpieces before fixing them. This operation is complicated and affects work efficiency. Utility Model Content
[0005] The purpose of this invention is to address the problem in the prior art where the movement parameters of the clamp need to be adjusted according to the workpiece parameters before positioning and clamping, which affects work efficiency. This invention proposes a novel hydraulic automatic clamp with an internal oil circuit.
[0006] The technical solution of this utility model is as follows: A novel hydraulic automatic clamp with an internal oil circuit includes a clamp support plate, a base plate for placing workpieces is provided directly below the clamp support plate, a push cylinder base is fixedly installed on the top of the clamp support plate, and a cylinder raising block for supporting the oil cylinder is fixedly installed on the bottom of the push cylinder base.
[0007] The clamping assembly includes a positioning clamping element, a guide rod, a guide hydraulic oil pipe, a piston, and a recovery cylinder. The positioning clamping element slides up and down inside the clamping support plate. The guide hydraulic oil pipe is fixedly installed inside the clamping support plate. The piston is slidably connected inside the guide hydraulic oil pipe. The guide rod is fixedly installed at the bottom of the piston. The guide rod is fixedly connected to the positioning clamping element. The guide hydraulic oil pipe is connected to the recovery cylinder through a hose.
[0008] The recovery cylinder has a built-in liquid level sensor, which is connected to the oil cylinder, and the base plate is located directly below the positioning pressure component.
[0009] Optionally, the hose on the guide hydraulic oil pipe is located on the outer arc surface of the guide hydraulic oil pipe and near the top, and the rod body of the guide rod is slidably connected to the guide hydraulic oil pipe.
[0010] Optionally, the positioning pressure member includes a guide cavity, a slider, and a clamping plate. The guide cavity is opened in the middle of the clamping support plate. The slider is slidably connected up and down in the guide cavity. The clamping plate is fixedly installed at the bottom of the slider. The bottom plate is located directly below the clamping plate.
[0011] Optionally, two guide rods are provided and symmetrically arranged on the top of the slider, and the number of guide rods is the same as the number of guide hydraulic oil pipes.
[0012] Optionally, the volume of the two guide hydraulic lines is smaller than the volume of the recovery cylinder, and the top of the recovery cylinder is fixedly connected to the clamp support plate.
[0013] Optionally, a pressure sensor is fixedly installed on the top of the slider. Two pressure sensors are provided and symmetrically arranged on the top of the slider.
[0014] Optionally, the pressure sensor is located directly below the guide hydraulic line, and the pressure sensor is misaligned with the guide rod.
[0015] Optionally, a quick-press base is fixedly installed on the top of the clamp support plate.
[0016] Compared with the prior art, this application includes at least one of the following beneficial technical effects:
[0017] This invention uses a workpiece to push the clamping plate upwards, causing hydraulic oil in the guide hydraulic pipe to be squeezed into the recovery cylinder. The liquid level sensor in the recovery cylinder senses the hydraulic oil level, and the liquid level sensor stops the operation of the cylinder through the control system. At this time, the clamping plate is in a semi-clamping state. Using this as a coordinate, clamping is performed again, thus adapting to workpieces of different heights without the need for adjustment based on workpiece parameters, thereby improving work efficiency.
[0018] Furthermore, the volume of the two guide hydraulic oil pipes is smaller than that of the recovery cylinder to prevent the hydraulic oil in the two guide hydraulic oil pipes from completely filling the recovery cylinder. When the pressure plate presses the workpiece, the guide hydraulic oil pipes are squeezed by the pressure sensor. Through the structural design of the two pressure sensors, the pressure is measured from two different positions to detect whether the pressure plate tilts or is unbalanced during the pressing process. Attached Figure Description
[0019] Figure 1 A front view schematic diagram of one embodiment of the present invention is provided;
[0020] Figure 2 A top view schematic diagram of one embodiment of the present invention is provided;
[0021] Figure 3 A half-sectional schematic diagram of the clamp support plate structure according to an embodiment of the present invention is provided.
[0022] Figure 4 A cross-sectional schematic diagram of the guide hydraulic oil pipe structure according to an embodiment of the present invention is provided.
[0023] Reference numerals: 1. Fixture support plate; 2. Base plate; 3. Push cylinder base; 4. Clamping assembly; 41. Guide cavity; 42. Slider; 43. Clamping plate; 44. Guide rod; 45. Guide hydraulic oil pipe; 46. Piston; 47. Recovery cylinder; 48. Pressure sensor; 5. Quick-press base; 6. Cylinder raising block. Detailed Implementation
[0024] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of this utility model, but not all embodiments.
[0025] The components of the present invention embodiments described and shown in the accompanying drawings can typically be arranged and designed in a variety of different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention.
[0026] Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.
[0027] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0028] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0029] Example 1
[0030] This embodiment proposes a novel internally integrated hydraulic automatic clamp, such as... Figure 1 As shown, the fixture includes a fixture support plate 1, a base plate 2 for placing workpieces is provided directly below the fixture support plate 1, a push cylinder base 3 is fixedly installed on the top of the fixture support plate 1, a cylinder lifting block 6 for supporting the cylinder is fixedly installed on the bottom of the push cylinder base 3, and a quick-press base 5 is fixedly installed on the top of the fixture support plate 1.
[0031] like Figure 2 and Figure 3 As shown, the clamping support plate 1 is provided with a clamping assembly 4 inside. The clamping assembly 4 includes a positioning clamping element, a guide rod 44, a guide hydraulic oil pipe 45, a piston 46, and a recovery cylinder 47. The positioning clamping element includes a guide cavity 41, a slider 42, and a clamping plate 43. The guide cavity 41 is opened in the middle of the clamping support plate 1. The slider 42 is slidably connected to the guide cavity 41. The clamping plate 43 is fixedly installed at the bottom of the slider 42. The bottom plate 2 is located directly below the clamping plate 43.
[0032] A downward pressure is applied to the clamp support plate 1 by a hydraulic cylinder, causing the clamp support plate 1 to move downward, so that the clamping plate 43 moves and clamps the workpiece together with the base plate 2. During the downward movement of the clamp support plate 1, the slider 42 extends out of the clamp support plate 1 due to gravity. When it contacts the workpiece, the workpiece pushes the clamping plate 43 upward, so that the slider 42 is completely retracted into the clamp support plate 1.
[0033] like Figure 4 As shown, a guide hydraulic oil pipe 45 is fixedly installed inside the clamp support plate 1. A piston 46 is slidably connected inside the guide hydraulic oil pipe 45. A guide rod 44 is fixedly installed at the bottom of the piston 46. The guide rod 44 is fixedly connected to the positioning pressure member. The guide hydraulic oil pipe 45 is connected to the recovery cylinder 47 through a hose. The hose on the guide hydraulic oil pipe 45 is located on the outer arc surface of the guide hydraulic oil pipe 45 and near the top. The rod body of the guide rod 44 is slidably connected to the guide hydraulic oil pipe 45.
[0034] Two guide rods 44 are provided and symmetrically arranged on the top of the slider 42. The number of guide rods 44 is the same as the number of guide hydraulic oil pipes 45. When the workpiece pushes the clamping plate 43 upward, the slider 42 pushes the guide rods 44 towards the guide hydraulic oil pipes 45. The guide rods 44 use the piston 46 to squeeze the hydraulic oil in the guide hydraulic oil pipes 45 into the recovery cylinder 47. The recovery cylinder 47 has a built-in liquid level sensor. The liquid level sensor in the recovery cylinder 47 senses the hydraulic oil level in the recovery cylinder 47. The liquid level sensor stops the operation of the oil cylinder through the control system. At this time, the clamping plate 43 is in the waiting clamping state, thereby realizing the initial coordinates formed by the support of the workpiece.
[0035] The workpiece is manually placed into the fixture and clamped securely by a hydraulic cylinder. The machine then begins processing. This semi-automatic clamping device, with its simple structure and ease of operation, significantly improves usability, increases production efficiency, reduces instability during production, and directly enhances product quality and consistency.
[0036] In this embodiment, the workpiece pushes the clamping plate 43 upward, causing the hydraulic oil in the guide hydraulic oil pipe 45 to be squeezed into the recovery cylinder 47. The liquid level sensor in the recovery cylinder 47 senses the hydraulic oil level in the recovery cylinder 47, and the liquid level sensor stops the operation of the oil cylinder through the control system. At this time, the clamping plate 43 is in a semi-clamping state. Using this as a coordinate, clamping is performed again, thereby adapting to workpieces of different heights without the need for adjustment based on workpiece parameters, thus improving work efficiency.
[0037] Example 2
[0038] Based on Example 1, this example proposes a novel internally integrated hydraulic automatic clamp, such as... Figure 3 As shown, the volume of the two guide hydraulic oil pipes 45 is smaller than the volume of the recovery cylinder 47. The top of the recovery cylinder 47 is fixedly connected to the clamp support plate 1 to prevent the hydraulic oil in the two guide hydraulic oil pipes 45 from completely filling the recovery cylinder 47.
[0039] Two pressure sensors 48 are fixedly mounted on the top of the slider 42, symmetrically arranged. When the slider 42 is fully retracted into the fixture support plate 1, the pressure sensors 48 contact the guide hydraulic oil pipe 45. When the clamping plate 43 presses down on the workpiece, the pressure sensors 48 are squeezed against the guide hydraulic oil pipe 45, so that the pressure sensors 48 can sense the pressure of the clamping plate 43 on the workpiece, making the data more accurate.
[0040] Since there are two pressure sensors 48, the pressure can be measured from two different positions, which can average the measurement results to a certain extent and more accurately reflect the overall pressure applied by the pressure plate to the workpiece. In addition, the two pressure sensors can help detect whether the pressure plate tilts or is unbalanced during the extrusion process. At the same time, the data from the two sensors can be used for mutual calibration to improve the reliability and accuracy of the measurement.
[0041] In this embodiment, when the pressure plate 43 presses the workpiece, the guide hydraulic oil pipe 45 is squeezed by the pressure sensor 48. Through the structural design of the two pressure sensors 48, the pressure is measured from two different positions to detect whether the pressure plate tilts or is overloaded during the pressing process.
[0042] The above specific embodiments are merely several optional embodiments of this utility model. Based on the technical solution of this utility model and the relevant teachings of the above embodiments, those skilled in the art can make various alternative improvements and combinations to the above specific embodiments.
Claims
1. A novel internally integrated hydraulic automatic clamp, characterized in that, include: A fixture support plate (1) is provided with a base plate (2) for placing workpieces directly below the fixture support plate (1). A push cylinder base (3) is fixedly installed on the top of the fixture support plate (1). A cylinder lifting block (6) for supporting the cylinder is fixedly installed on the bottom of the push cylinder base (3). The clamping assembly (4) includes a positioning clamp, a guide rod (44), a guide hydraulic oil pipe (45), a piston (46), and a recovery cylinder (47). The positioning clamp slides up and down inside the clamp support plate (1). The guide hydraulic oil pipe (45) is fixedly installed inside the clamp support plate (1). The piston (46) is slidably connected inside the guide hydraulic oil pipe (45). The guide rod (44) is fixedly installed at the bottom of the piston (46). The guide rod (44) is fixedly connected to the positioning clamp. The guide hydraulic oil pipe (45) is connected to the recovery cylinder (47) through a hose. The recovery cylinder (47) has a built-in liquid level sensor, which is connected to the oil cylinder. The base plate (2) is located directly below the positioning pressure member.
2. The novel internally mounted hydraulic automatic clamp according to claim 1, characterized in that: The hose on the guide hydraulic oil pipe (45) is located on the outer arc surface of the guide hydraulic oil pipe (45) and near the top. The rod body of the guide rod (44) is slidably connected to the guide hydraulic oil pipe (45).
3. The novel internally mounted hydraulic automatic clamp according to claim 1, characterized in that: The positioning pressure component includes a guide cavity (41), a slider (42) and a clamping plate (43). The guide cavity (41) is opened in the middle of the clamp support plate (1). The slider (42) is slidably connected in the guide cavity (41). The clamping plate (43) is fixedly installed at the bottom of the slider (42). The base plate (2) is located directly below the clamping plate (43).
4. A novel internally mounted hydraulic automatic clamp according to claim 3, characterized in that: Two guide rods (44) are provided and symmetrically arranged on the top of the slider (42). The number of guide rods (44) is the same as the number of guide hydraulic oil pipes (45).
5. A novel internally mounted hydraulic automatic clamp according to claim 4, characterized in that: The volume of the two guide hydraulic pipes (45) is smaller than the volume of the recovery cylinder (47), the top of which is fixedly connected to the clamp support plate (1).
6. A novel internally mounted hydraulic automatic clamp according to claim 5, characterized in that: Two pressure sensors (48) are fixedly installed on the top of the slider (42) and are symmetrically arranged on the top of the slider (42).
7. A novel internally mounted hydraulic automatic clamp according to claim 6, characterized in that: The pressure sensor (48) is located directly below the guide hydraulic oil pipe (45), and the pressure sensor (48) is misaligned with the guide rod (44).
8. A novel internally mounted hydraulic automatic clamp according to claim 1, characterized in that: A quick-press base (5) is fixedly installed on the top of the clamp support plate (1).