Three-point flexible clamp for clamping unfixed size through rigid clamping jaw structure
By combining a rigid gripper structure and a flexible clamping design with movable grippers, buffer springs, and sensors, the problem of existing clamps being unable to hold objects of varying sizes has been solved, achieving stable clamping and reduced wear.
Patent Information
- Application Number
- CN202520473854.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-17
- Publication Date
- 2026-01-30
- Estimated Expiration
- 2035-03-17
AI Technical Summary
Existing clamps are difficult to effectively hold objects of variable size, especially those with a large error range, and the sensing rubber is prone to wear.
It adopts a rigid gripper structure, combined with movable grippers, buffer springs, pressure sensors and limit position limit switches to form a three-point flexible clamping, which can adapt to objects of different sizes, and the clamping point can be flexibly adjusted through pins and lead screws.
It achieves stable clamping of objects with a large error range, reduces fixture wear, and improves clamping efficiency and adaptability.
Smart Images
Figure CN223849082U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the technical field of clamp, concretely to a three -point flexible clamp with steel clamping jaw structure clamping not fixed size. BACKGROUND
[0002] Clamp is the device that is used to fix the processing object in the mechanical manufacturing process, makes it occupy the correct position, accepts the device of construction or detection, from the broad sense, clamp is the indispensable part in the process, can quickly, conveniently and safely install workpiece, is suitable for various processes, such as welding, inspection, assembly and machine tool processing etc.
[0003] Clamp has important role in production. It can ensure that workpiece reaches predetermined size, shape and position accuracy when processing to improve production efficiency and product quality. In addition, clamp can also reduce working time, improve economic benefits, so that unskilled workers can also complete complex work. According to different purposes and functions, clamp can be divided into assembly clamp, machining clamp and inspection clamp etc.
[0004] However, the existing ones are all through computer programming control ball screw motor to carry out clamping function, are suitable for accurate clamping and moving of fixed size clamped objects, are not suitable for objects with large error range and large clamping force, and the fixed clamping jaw of the existing clamp is inducted by setting inductive rubber, and the inductive rubber is easy to wear during use. Therefore, the technical personnel in the art provide a three-point flexible clamp with steel clamping jaw structure clamping not fixed size to solve the problems raised in the above background art. CONTENT OF THE UTILITY MODEL
[0005] In view of the deficiencies of the prior art, the utility model provides a three -point flexible clamp with steel clamping jaw structure clamping not fixed size to solve the problems raised in the above background art.
[0006] To achieve the above object, the utility model is realized by the following technical scheme: a three -point flexible clamp with steel clamping jaw structure clamping not fixed size, including bottom thrust support, the inside installation of bottom thrust support has motor housing, the both sides of motor housing (2) are provided with straight groove type long hole (4), bottom thrust support (3) is connected in straight groove type long hole (4) inside through pin shaft, the inside of motor housing is provided with motor, and the output end of motor has deep groove ball bearing and thrust bearing in turn, the one end of thrust bearing is connected with shaft coupling in the inside of bottom thrust support, one end of shaft coupling is connected with screw rod, one side of bottom thrust support is fixed with positioning shell, the upper surface end face position of positioning shell is installed with fixed jaw, and the inside of positioning shell is slidably installed with movable clamping jaw, the outside of movable clamping jaw is provided with clamping jaw near the position of fixed jaw.
[0007] Preferably, the outer part of the movable clamping jaw is provided with a pin shaft, and the clamping jaw is arranged on the outer part of the movable clamping jaw through the pin shaft.
[0008] Preferably, the inner side of the bottom thrust frame is provided with a limit position travel switch, and the other inner side of the bottom thrust frame is provided with an L-shaped mounting frame, and the lower surface of the mounting frame is provided with a pressure sensor.
[0009] Preferably, the inner part of the bottom thrust frame is further provided with a buffer spring, one end of the buffer spring is fixed to the inner side of the bottom thrust frame, and the other end of the buffer spring is fixed to the stress end of the motor housing (2).
[0010] Preferably, the inner part of the positioning shell is further provided with a lead screw bearing, and one end of the lead screw penetrates through the inner part of the limit push rod and is embedded into the bearing to be rotationally connected with the lead screw bearing.
[0011] Beneficial effects
[0012] The utility model provides a three point flexible clamp of clamping not fixed size, has the following beneficial effects compared with prior art:
[0013] 1. The three point flexible clamp of clamping not fixed size, through the pin shaft of movable clamping jaw installation, through the pin shaft connection has two ends to rise up's clamping jaw, clamping jaw can move, and the two ends of its rise up form two fixed clamping points, and the fixed connection of positioning shell forms three points with positioning clamping jaw, clamping the clamped object, and the clamping effect is better, is applicable to the article of error range is relatively big and needs big clamping force.
[0014] 2. The three point flexible clamp of clamping not fixed size, through the setting of buffer spring, pressure sensor and limit position travel switch, so that limit push rod and limit position travel switch cooperate, avoid the retreat of movable clamping jaw to exceed the limit position. BRIEF DESCRIPTION OF DRAWINGS
[0015] Figure 1 It is a kind of three point flexible clamp of clamping not fixed size with rigid clamping jaw structure structure schematic diagram;
[0016] Figure 2 It is Figure 1 The enlarged view of part A;
[0017] Figure 3 It is a kind of three point flexible clamp of clamping not fixed size with rigid clamping jaw structure structure schematic diagram of lead screw;
[0018] Figure 4 It is a kind of three point flexible clamp of clamping not fixed size with rigid clamping jaw structure structure schematic diagram of lead screw;
[0019] Figure 5It is a schematic view of a pressure sensor structure of a three-point flexible clamp with a steel clamping jaw structure clamping non-fixed size.
[0020] In the figure: 1, motor; 2, motor housing; 3, bottom thrust frame; 4, straight slot type long hole; 5, buffer spring; 6, pressure sensor; 61, mounting bracket; 9, shaft coupling; 10, screw rod; 11, limit position travel switch; 12, movable clamping jaw; 13, clamping jaw; 14, limit push rod; 15, positioning shell; 16, fixed jaw. DETAILED DESCRIPTION
[0021] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.
[0022] Please refer to Figures 1-4 The present application provides a technical solution: a three-point flexible clamp with a steel clamping jaw structure clamping non-fixed size, comprising a bottom thrust frame 3, a motor housing 2 is installed inside the bottom thrust frame 3, straight slot type long holes 4 are formed on both sides of the motor housing 2, the bottom thrust frame 3 is connected inside the straight slot type long holes 4 through a pin shaft, a motor 1 is arranged inside the motor housing 2, and a deep groove ball bearing and a thrust bearing are sequentially arranged at the output end of the motor 1, one end of the thrust bearing is connected with a shaft coupling 9 inside the bottom thrust frame 3, one end of the shaft coupling 9 is connected with a screw rod 10, a positioning shell 15 is fixed on one side of the bottom thrust frame 3, a fixed jaw 16 is installed on the upper surface end face position of the positioning shell 15, and a movable clamping jaw 12 is slidably installed inside the positioning shell 15, and two clamping jaws 13 with two ends raised are arranged on the outer side of the movable clamping jaw 12 close to the fixed jaw 16.
[0023] In Figure 1 and Figure 2 In the figure: the outer part of the movable clamping jaw 12 is provided with a pin shaft, the clamping jaw 13 is arranged on the outer part of the movable clamping jaw 12 through the pin shaft, the pin shaft is installed on the movable clamping jaw 12, and the clamping jaw 13 is connected through the pin shaft, the clamping jaw 13 can move, the two ends raised form two fixed clamping points, and the fixed jaw 16 fixedly connected on the positioning shell 15 forms three points, and the clamping jaw 13 clamps the clamped object.
[0024] In Figure 1In the middle: the inner side of the bottom thrust frame 3 is provided with a limit position switch 11, and the other inner side of the bottom thrust frame 3 is provided with an "L" type mounting bracket 61, the lower surface of the mounting bracket 61 is provided with a pressure sensor 6, and the limit position switch 11 is contacted by the movable clamp jaw 12 to avoid exceeding the limit position when the movable clamp jaw 12 is retracted, and the pressure sensor 6 is moved by the long slot on the mounting bracket 61, so that the pressure of the movable clamp jaw 12 on the fixed jaw 16 through the clamped object can be adjusted.
[0025] In Figure 1 and Figure 4 In: the inside of the bottom thrust frame 3 is also provided with a buffer spring 5, one end of the buffer spring 5 is fixed on the inner side of the bottom thrust frame 3, and the other end of the buffer spring 5 is fixed on the force receiving end of the motor housing 2, so that when the motor housing 2 is stressed, it can move inside the bottom thrust frame 3 and protect the motor from the thrust force.
[0026] In Figure 1 and Figure 3 In: the inside of the positioning shell 15 is also provided with a lead screw bearing, one end of the lead screw 10 penetrates the inside of the movable clamp jaw 12 and is embedded in the inside of the lead screw bearing to rotate with the bearing, so that when the motor 1 works, the lead screw 10 will rotate to move the limit push rod 14, and then the movable clamp jaw 12, the clamping jaw 13 and the fixed jaw 16 can be used to clamp objects of different sizes.
[0027] When working (or using), first set the motor 1 inside the motor housing 2, the motor housing 2 has two corresponding straight slot type long holes 4 on both sides, the motor housing 2 is placed inside the bottom thrust frame 3 and is matched with the inside of one end of the bottom thrust frame 3, the bottom thrust frame 3 is provided with a pin hole, and the straight slot type long hole 4 is connected by a pin shaft, so that when the motor 1 and the motor housing 2 are stressed, they can move inside the bottom thrust frame 3 and be buffered by the buffer spring 5, and the torque when clamping the clamped object can be adjusted.
[0028] The connection relationship of the motor 1 output end is deep groove ball bearing → thrust bearing → coupling 9 → lead screw 10, the lead screw 10 extends to the inside of the positioning shell 15 and rotates therein, the lead screw 10 is threadedly connected with the movable clamp jaw 12, the movable clamp jaw 12 has a pin shaft, the pin shaft is connected with the clamping jaw 13, the clamping jaw 13 can move, the two ends of which are raised to form two fixed points, and the fixed jaw 16 on the upper surface of the positioning shell 15 is fixedly connected to form three points to clamp the clamped object.
[0029] The end of the motor housing 2 and the end of the bottom thrust frame 3 are provided with a buffer spring 5, the inside of the bottom thrust frame 3 is provided with a pressure sensor 17 (the position is not limited to the pressure sensor 17, and can be an infrared sensor or other sensor or mechanism capable of judging the stroke and position) corresponding to the motor housing 2, and the upper part of the coupling 9 is located at the position of the bottom thrust frame 3 and is provided with a limit position stroke switch 11, and the movable clamping jaw 12 cooperates with the limit position stroke switch 11 to avoid the movable clamping jaw 12 from exceeding the limit position when it is retracted.
[0030] Meanwhile, the contents not described in detail in the specification all belong to the prior art known to those skilled in the art.
Claims
1. A three-point flexible clamp with a rigid gripper structure for gripping non-fixed-size objects, characterized in that: Including bottom thrust frame (3), the inside of bottom thrust frame (3) is installed with motor housing (2), the both sides of motor housing (2) are provided with straight slot type long hole (4), bottom thrust frame (3) is connected in straight slot type long hole (4) inside by pin shaft, the inside of motor housing (2) is provided with motor (1), and the output end of motor (1) has deep groove ball bearing and thrust bearing in turn, one end of thrust bearing is connected with shaft coupling (9) in the inside of bottom thrust frame (3), one end of shaft coupling (9) is connected with lead screw (10), one side of bottom thrust frame (3) is fixed with positioning shell (15), the upper surface end face position of positioning shell (15) is installed with fixed jaw (16), and movable jaw (12) is slidably installed in the inside of positioning shell (15), the outer side of movable jaw (12) is provided with two end upturned clamping jaw (13) near the position of fixed jaw (16).
2. A three-point flexible fixture of the type defined in claim 1, characterized in that: The outside of movable jaw (12) is provided with a pin shaft, and the clamping jaw (13) is arranged on the outside of the movable jaw (12) through the pin shaft.
3. A three-point flexible fixture of the type described in claim 1, wherein: the fixture is of the type having a rigid jaw structure for clamping non- fixed size workpieces. One inner side of the bottom thrust frame (3) is provided with a limit position travel switch (11), and the other inner side of the bottom thrust frame (3) is provided with an "L"-shaped mounting bracket (61), and the lower surface of the mounting bracket (61) is provided with a pressure sensor (6).
4. A three-point flexible fixture of the type described in claim 1, wherein: the fixture is of the type having a rigid jaw structure for gripping workpieces of non-uniform size. The inside of the bottom thrust frame (3) is further provided with a buffer spring (5), one end of the buffer spring (5) is fixed to the inner side of the bottom thrust frame (3), and the other end of the buffer spring (5) is fixed to the stress end of the motor housing (2).
5. A three-point flexible clamp with a rigid gripper structure for gripping non-fixed sizes according to claim 1, characterized in that: The inside of the positioning shell (15) is further provided with a lead screw bearing, one end of the lead screw (10) penetrates through the inside of the movable jaw (12) and is embedded in the bearing and connected with the lead screw bearing.