CN109719546B - An electromechanical-hydraulic integrated pressure equalizing clamping system - Google Patents

Abstract

The invention belongs to the technical field of mechanical clamping, and discloses an electro-mechanical-hydraulic integrated voltage-sharing clamping system which comprises a base and a clamping device, wherein the base is fixedly provided with a motor, the motor is fixedly connected with a screw rod, a screw block is in threaded connection with the screw rod, a first lifting mechanism is fixedly arranged on the screw block, and the first lifting mechanism is connected with a connecting plate; a second lifting mechanism is fixed on the connecting plate; the clamping device comprises at least two clamping mechanisms, and each clamping mechanism comprises at least two groups of clamping pieces; the two groups of clamping pieces form a clamping space, and the clamping space of each clamping mechanism is correspondingly connected with the clamping spaces of other clamping mechanisms through a horizontal rod; and the hinged joint at the lowest part of one clamping mechanism is connected with the second lifting mechanism. The invention aims to solve the problem that a plurality of workpieces cannot be clamped in a pressure equalizing mode at the same time.

Description

An electromechanical-hydraulic integrated pressure equalizing clamping system

technical field

The invention belongs to the technical field of mechanical clamping, and in particular relates to an electromechanical-hydraulic integrated pressure equalizing clamping system.

Background technique

In the fixture, the device used to prevent displacement or vibration during the reprocessing of the workpiece is called a clamping device. On the basis of positioning the workpiece, because the workpiece is subjected to a large external force during processing, mainly cutting force, the positioning will generally be destroyed. At this time, it is necessary to apply a clamping force to the workpiece to prevent the workpiece from moving.

There are many kinds of existing clamping devices, but most of them are only changes in style. The clamping device itself does not have much performance improvement. The traditional clamping device cannot clamp multiple workpieces at the same time. When the clamping device is more clamped for uneven or irregular surfaces, it is easy to cause damage to the workpiece due to uneven clamping or excessive clamping force.

SUMMARY OF THE INVENTION

The invention provides an electromechanical-hydraulic integrated pressure equalizing clamping system to solve the problem that multiple workpieces cannot be clamped simultaneously by equalizing pressure.

The basic solution of the present invention: an electromechanical-hydraulic integrated pressure equalizing and clamping system, including a base and a clamping device, a motor is fixed at one end of the base, and a screw rod is fixedly connected to the output shaft of the motor, and the screw rod is It is arranged along the length direction of the base, the screw rod is threadedly connected with a wire block, the upper end surface of the wire block is fixed with a vertically arranged first lifting mechanism, and the moving end of the first lifting mechanism is connected with a horizontally arranged lifting mechanism. a connecting plate; the upper end face of the connecting plate is fixed with a vertically arranged second lifting mechanism; the clamping device includes at least two clamping mechanisms arranged side by side, each clamping mechanism includes at least two sets of clamps, each The set of clips is arranged along the height direction; each set of clips includes two clip rods, the midpoints of the two clip rods are hinged to each other through a hinge joint, and the top ends of the two clip rods of each set of clip members are respectively connected with the clip members located above. The bottom ends of the two clamping rods are hinged to each other; the two sets of clamps form a clamping space, and the inner side of the clamping rod of each clamping space is fixedly connected with a hydraulic strut for clamping the workpiece, and the hydraulic strut is connected to the workpiece. The contact end is provided with a pressure sensing plate, and the pressure sensing plate is electrically connected with a force balancer for adjusting the hydraulic strut; the clamping space of each clamping mechanism is connected with the clamping space of other clamping mechanisms through the horizontal rod Correspondingly connected; the bottom ends of the two lowermost clamping rods of each clamping mechanism are respectively hinged with a first connecting rod and a second connecting rod, and the bottom ends of the first connecting rod and the second connecting rod are hinged with each other, the said The hinge points of the first connecting rod and the second connecting rod are fixedly arranged just below the hinge head of the clamping mechanism, wherein the lowermost hinge head of one clamping mechanism is connected with the second lifting mechanism.

The working principle and beneficial effects of the basic scheme: when in use, the second lifting mechanism is activated, and the second lifting mechanism drives the hinged joint connected to it to move up or down according to the size of the workpiece. When the second lifting mechanism pushes the hinged joint connected to it to move up, the clamping space of the clamping mechanism connected to the second lifting mechanism becomes larger through the principle of the link mechanism, and multiple workpieces can be placed in this clamping mechanism respectively. in each clamping space of the system. Then, the clamping space is reduced by the second lifting mechanism, so as to clamp the workpiece. In this solution, only the second lifting mechanism can drive the entire clamping device to clamp a plurality of workpieces, and the operation is convenient and fast.

When the workpiece is irregular, the data sensed by each point is transmitted to the force balancer through the pressure sensing plate, and the force balancer adjusts the hydraulic struts at each point according to the pressure value, so that the force is balanced when clamping the irregular workpiece. , the clamping effect is better.

When the workpiece is processed, align the machining head with one of the clamping spaces. After the machining head has finished processing a workpiece, since the position of the machining head does not move, the second lifting mechanism and the motor are used to drive the workpieces to be machined in other clamping spaces. Move to the processing place, so that the processing head completes the processing of the next workpiece, so as to finally complete the processing of multiple workpieces in the entire clamping system, which improves the processing efficiency.

Further, a hydraulic strut is arranged on the inner side of each clamp rod in the clamping space, and the hydraulic struts of the clamping space are symmetrically arranged along the diagonal of the clamping space.

Hydraulic struts are arranged symmetrically in the clamping space, which improves the effect of balanced force on the workpiece.

Further, a compression spring is arranged between the upper and lower hinged clamping rods in each clamping space.

When the workpiece is in the clamping space, after the compression spring is stretched, the compression spring will provide a clamping force, which further clamps the workpiece. And when the workpiece is processed, the compression spring can achieve the effect of shock absorption.

Further, the base is fixed with a support plate located behind the clamping device, and each hinge head in the clamping device is fixed with a support block capable of abutting against the support plate.

When the workpiece is processed, the hinged head on the clamping mechanism abuts against the support plate through the support block, and the support plate provides the stability of the clamping mechanism.

Further, the supporting plate is fixed directly behind one of the clamping mechanisms, the height of the supporting plate is greater than the height of the clamping mechanism connected with the second lifting mechanism, and the width of the supporting plate is smaller than that connected with the second lifting mechanism The width of the clamping mechanism, and the width of the support plate is greater than the width of the hinge joint.

To use, align the processing head with the clamping mechanism located directly in front of the support plate. When the machining head processes the workpiece, the clamping mechanism that clamps the workpiece being processed is subject to greater vibration. Only the support plate needs to provide support for the clamping mechanism, that is, it can provide stability for the entire clamping system, thereby reducing the The production cost of the support plate is reduced. When the workpiece in the next clamping mechanism needs to be processed, since the position of the processing head does not move, the next clamping mechanism is moved to the front of the support plate, so that the support block on the next clamping mechanism abuts against the support plate , so that the support plate provides support for the next clamping mechanism. That is to say, the solution can realize that the support plate can provide a supporting force for each workpiece in the clamping space when processing the workpiece, which effectively guarantees the stability of the clamping system.

Further, the first lifting mechanism, the second lifting mechanism and the hydraulic strut are all selected from hydraulic cylinders.

The use of hydraulic cylinders facilitates automatic control of the positioning and clamping process.

Description of drawings

FIG. 1 is a schematic structural diagram provided by an embodiment of an electromechanical-hydraulic integrated pressure equalizing clamping system of the present invention.

Detailed ways

In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, but not to limit the present invention.

The application principle of the present invention will be further described below in conjunction with the accompanying drawings and specific embodiments:

The reference signs in the drawings include: base 1, motor 2, screw rod 3, screw block 4, first lifting mechanism 5, connecting plate 6, second lifting mechanism 7, clamping mechanism 8, horizontal rod 9, hinge Head 10, clamping space 11, clamping rod 12, compression spring 13, hydraulic strut 14, pressure sensing plate 15, first connecting rod 16, second connecting rod 17, hinge point fixing seat 18, support plate 19, support block 20. Force balancer 21 and clip 22.

The embodiment is based on, as shown in FIG. 1 : an electromechanical-hydraulic integrated pressure equalizing clamping system, including a base 1 and a clamping device. A motor 2 is fixed on the right end of the base 1 , and a lead screw 3 is fixedly connected to the output shaft of the motor 2 , and the lead screw 3 is arranged along the length direction of the base 1 . A wire block 4 is threadedly connected to the screw rod 3 , the upper end surface of the wire block 4 is fixed with a vertically arranged first lifting mechanism 5 , and the moving end of the first lifting mechanism 5 is connected with a horizontally arranged connecting plate 6 . In this embodiment, the first lifting mechanism 5 selects a hydraulic cylinder, and the telescopic end of the hydraulic cylinder is fixedly connected to the connecting plate 6 . A vertically arranged second lifting mechanism 7 is fixed on the upper end surface of the connecting plate 6 , and a hydraulic cylinder is selected for the second lifting mechanism 7 .

The clamping device includes at least two clamping mechanisms 8 arranged side by side, and each clamping mechanism 8 includes at least two sets of clamping members 22 , and each set of clamping members 22 is arranged along the height direction. In this embodiment, three clamping mechanisms 8 are arranged side by side, and each clamping mechanism 8 is connected with three sets of clamping members 22 . Each set of clamping members 22 includes two clamping rods 12 , the midpoints of the two clamping rods 12 are hinged to each other through the hinge joint 10 , and the top ends of the two clamping rods 12 of each set of clamping members 22 are respectively connected with the upper ends of the clamping members 22 located above. The bottom ends of the two clamping rods 12 are hinged to each other. The two sets of clamping members 22 form a clamping space 11. In this embodiment, a clamping mechanism 8 has two clamping spaces 11, and the inner sides of the four clamping rods 12 of each clamping space 11 are fixedly connected with a clamping space 11 for clamping. The hydraulic struts 14 for tightening the workpiece and the hydraulic struts 14 for the clamping space 11 are symmetrically arranged along the diagonal of the clamping space 11 , and the hydraulic struts 14 are selected from hydraulic cylinders. The end of the hydraulic strut 14 in contact with the workpiece is provided with a pressure sensing plate 15, and the pressure sensing plate 15 is electrically connected with a force balancer 21 for adjusting the hydraulic strut 14, and the force balancer 21 is installed on the base 1, through the pressure The sensing board 15 transmits the data sensed by each point to the force balancer 21, and the force balancer 21 adjusts the hydraulic strut 14 at each point according to the pressure value, so that the force is balanced when clamping the irregular workpiece, and the clamping effect is better.

The clamping space 11 of each clamping mechanism 8 is correspondingly connected with the clamping spaces 11 of the other clamping mechanisms 8 through the horizontal rod 9 . The bottom ends of the two lowermost clamping rods 12 of each clamping mechanism 8 are respectively hinged with a first connecting rod 16 and a second connecting rod 17 , and the bottom ends of the first connecting rod 16 and the second connecting rod 17 are hinged with each other. The hinge points of the first connecting rod 16 and the second connecting rod 17 are fixedly arranged just below the hinge head 10 of the clamping mechanism 8. Specifically, the connecting plate 6 is fixed with a plurality of hinge point fixing seats 18, each of which The hinge points of the connecting rod 16 and the second connecting rod 17 are both fixed on the corresponding hinge point fixing seat 18 . In this embodiment, the lowermost hinge joint 10 of the middle clamping mechanism 8 is connected to the second lifting mechanism 7 .

In the entire clamping device, a compression spring 13 is provided between the upper and lower hinged clamping rods 12 in each clamping space 11. When the workpiece is located in the clamping space 11 and the compression spring 13 is stretched, the compression spring 13 will Provides a clamping force that further clamps the workpiece. And when the workpiece is processed, the compression spring 13 can achieve the effect of shock absorption. The base 1 is fixed with a supporting plate 19, the supporting plate 19 is located directly behind the intermediate clamping mechanism 8, the height of the supporting plate 19 is greater than the height of the intermediate clamping mechanism 8, the width of the supporting plate 19 is smaller than the width of the intermediate clamping mechanism 8, and The width of the support plate 19 is greater than the width of the hinge joint 10 . Each hinge head 10 in the clamping device is fixed with a support block 20 that can abut on the support plate 19 , by moving the clamp mechanism 8 , the hinge head 10 of each clamp mechanism 8 can be moved to the support plate 19 It is in front of and abuts against the support plate 19 , when the workpiece is processed, the support plate 19 provides the stability of the clamping mechanism 8 .

The specific implementation process is as follows: when in use, the second lifting mechanism 7 is activated, and the second lifting mechanism 7 drives the hinge joint 10 connected thereto to move up or down according to the size of the workpiece. When the second lifting mechanism 7 pushes the hinge head 10 upward, all hinge heads 10 on the clamping mechanism 8 in the middle move up along the support plate 19 through the principle of the link mechanism, so that the clamping space 11 becomes larger, A plurality of workpieces are respectively placed in each clamping space 11 of the clamping system. Then, the hinge head 10 is pulled down by the second lifting mechanism 7 to make the clamping space 11 smaller, and the workpiece is clamped. When the workpiece is irregular, when the pressure of the hydraulic strut 14 in each clamping space 11 acting on the workpiece is small or no pressure, the pressure signal sent to the force balancer 21 through the pressure sensing plate 15, the force balancer 21 controls the extension of the hydraulic strut 14 so that it can act on the workpiece, thereby compressing the irregular workpiece.

In this embodiment, when the second lifting mechanism 7 drives the clamping space 11 in the intermediate clamping mechanism 8 to change, the intermediate clamping mechanism 8 will simultaneously drive the clamping spaces 11 of the clamping mechanisms 8 on both sides through the horizontal rod 9 . Consistent changes occur, so that each clamping space 11 clamps the workpiece together.

When the workpiece is processed, align the processing head with the upper clamping space 11 in the intermediate clamping mechanism 8. After the processing head completes processing a workpiece, the second lifting mechanism 7 drives the clamping device to move up, so that the intermediate clamping mechanism 8 The lower clamping space 11 in the middle is facing the processing place, so that the processing head can process the workpiece in the clamping space 11 . When all the workpieces in the intermediate clamping mechanism 8 are processed, start the motor 2, the rotation of the motor 2 drives the screw rod 3 to rotate, and the rotation of the screw rod 3 makes the screw block 4 move, thereby causing the left or right clamping mechanism 8 to translate to the place to be processed. In this solution, the entire clamping device can be driven to clamp a plurality of workpieces through the second lifting mechanism 7, and the operation is fast. And when a workpiece is processed, the next workpiece to be processed is moved to the processing place, so that the processing of multiple workpieces in the entire clamping system is finally completed, and the processing efficiency is improved.

The above descriptions are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention shall be included in the protection of the present invention. within the range.

Claims (4)

1. The electro-mechanical-hydraulic integrated pressure-equalizing clamping system is characterized by comprising a base (1) and a clamping device, wherein a motor (2) is fixed at one end of the base (1), an output shaft of the motor (2) is fixedly connected with a lead screw (3), the lead screw (3) is arranged along the length direction of the base (1), a screw block (4) is in threaded connection with the lead screw (3), a vertically arranged first lifting mechanism (5) is fixed on the upper end face of the screw block (4), and a horizontally arranged connecting plate (6) is connected with the moving end of the first lifting mechanism (5); a second lifting mechanism (7) which is vertically arranged is fixed on the upper end face of the connecting plate (6);

the clamping device comprises at least two clamping mechanisms (8) arranged side by side, each clamping mechanism (8) comprises at least two groups of clamping pieces (22), and each group of clamping pieces (22) is arranged along the height direction; each group of clamping pieces (22) comprises two clamping rods (12), the middle points of the two clamping rods (12) are hinged with each other through a hinge joint (10), and the top ends of the two clamping rods (12) of each group of clamping pieces (22) are respectively hinged with the bottom ends of the two clamping rods (12) of the clamping pieces (22) above; the two groups of clamping pieces (22) form a clamping space (11), the inner side of a clamping rod (12) of each clamping space (11) is fixedly connected with a hydraulic support rod (14) used for clamping a workpiece, a pressure sensing plate (15) is arranged at the end part of the hydraulic support rod (14) contacted with the workpiece, and the pressure sensing plate (15) is electrically connected with a stress balancer (21) used for adjusting the hydraulic support rod (14); the clamping space (11) of each clamping mechanism (8) is correspondingly connected with the clamping spaces (11) of other clamping mechanisms (8) through a horizontal rod (9);

the bottom ends of two lowermost clamping rods (12) of each clamping mechanism (8) are respectively hinged with a first connecting rod (16) and a second connecting rod (17), the bottom ends of the first connecting rod (16) and the second connecting rod (17) are hinged with each other, the hinged points of the first connecting rod (16) and the second connecting rod (17) are fixedly arranged right below the hinged joint (10) of the clamping mechanism (8), and the hinged joint (10) of one clamping mechanism (8) at the lowermost part is connected with a second lifting mechanism (7);

a supporting plate (19) positioned behind the clamping device is fixed on the base (1), and a supporting block (20) capable of abutting against the supporting plate (19) is fixed on each hinge joint (10) in the clamping device;

the supporting plate (19) is fixed right behind one of the clamping mechanisms (8), the height of the supporting plate (19) is larger than that of the clamping mechanism (8) connected with the second lifting mechanism (7), the width of the supporting plate (19) is smaller than that of the clamping mechanism (8) connected with the second lifting mechanism (7), and the width of the supporting plate (19) is larger than that of the hinge joint (10).

2. The electro-mechanical-hydraulic integrated pressure equalizing clamping system according to claim 1, wherein a hydraulic brace (14) is disposed inside each clamping bar (12) in the clamping space (11), and the hydraulic braces (14) of the clamping space (11) are symmetrically disposed along a diagonal of the clamping space (11).

3. The electro-mechanical-hydraulic integrated pressure equalizing clamping system according to claim 1, wherein a pressure spring (13) is arranged between the upper and lower hinged clamping bars (12) in each clamping space (11).

4. The electro-mechanical-hydraulic integrated pressure equalizing and clamping system according to claim 1, wherein the first lifting mechanism (5), the second lifting mechanism (7) and the hydraulic support rod (14) are all hydraulic cylinders.

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