Clamping device for intelligent boring and milling machining center of robot parts

Abstract

The present invention relates to the technical field of CNC machining center equipment, and in particular to a clamping device for an intelligent boring and milling machining center of robot components, comprising a bracket and a pressing plate, wherein the pressing plate is slidably mounted on the side surface of the bracket, and the pressing plate is provided with a fixing hole matching a workpiece, and further comprising: a balancing component for balancing the gravity of the pressing plate; an energy storage component and a piston rod component, comprising a first cylinder body, a second cylinder body and an oil tank, which form a closed oil circuit through the connection of a return oil pipe, an output oil pipe and an overflow oil pipe. When in use, the balancing component pulls the pressing plate to keep the pressing plate in a normally lifted state, and utilizes the pressure of the workpiece on the workbench to compress the spring of the energy storage component to store energy, and utilizes the piston rod component to adjust the tension of the pressing plate. Only three control valves on the oil circuit need to be controlled to complete the lifting and pressing actions of the pressing plate. The device does not require additional power, works reliably, and the workpiece clamping operation is simple and convenient, with high clamping efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of numerical control machining center equipment, and in particular to a clamping device for an intelligent boring and milling machining center of robot components. Background Art

[0002] The box workpieces in large robot components need to be processed using a floor-standing boring and milling machining center. In order to ensure relative accuracy, multiple sides of the workpiece need to be clamped at one time to complete the processing, and a top clamping clamping method is required. Usually, a device with a column and a pressure plate is used for clamping. The pressure plate is first connected and fixed to the top of the workpiece, and then the pressure plate is fixed to the column set next to the workpiece. Since the pressure plate of the large workpiece clamping device is relatively heavy, it is necessary to frequently use a crane to load, unload and adjust the pressure plate. This clamping efficiency is low. At the same time, due to the high position of the pressure plate, it is difficult to fix and adjust the pressure plate to the workpiece or column. Summary of the invention

[0003] The technical problem to be solved by the present invention is: in order to solve the problems of low loading and unloading efficiency of ordinary robot component boring and milling machining center clamping devices and great difficulty in fixed installation and adjustment operations, a robot component intelligent boring and milling machining center clamping device is provided.

[0004] The technical solution adopted by the present invention to solve the technical problem is: a clamping device for an intelligent boring and milling machining center of robot components, comprising a bracket and a pressing plate, wherein the pressing plate is slidably mounted on the side of the bracket, and a fixing hole is provided on the pressing plate, and further comprising:

[0005] A balancing assembly, the balancing assembly comprising a connecting rope, a left guide wheel, a right guide wheel, a balancing weight and a stop block, the left guide wheel and the right guide wheel are fixed to the top of the bracket, one end of the connecting rope is fixedly connected to the pressure plate, and the other end is fixedly connected to the balancing weight after passing through the left guide wheel and the right guide wheel in sequence, the weight of the balancing weight is greater than the weight of the pressure plate, and the stop block is fixed to the bracket and is located below the balancing weight;

[0006] An energy storage assembly, the energy storage assembly comprising a first cylinder body, a first piston, a second piston, a spring and a stopper, the first cylinder body being fixed in a workbench of a machining center, the first piston and the second piston being both slidably mounted in an oil cavity of the first cylinder body, the lower end of the spring being connected to an upper end surface of the first piston, and the upper end of the spring being connected to a lower end surface of the second piston, a stopper being provided at an upper end of the first cylinder body, and a rodless cavity being formed between a cavity bottom of the oil cavity of the first cylinder body and the first piston;

[0007] and a piston rod assembly, the piston rod assembly comprising a second cylinder body, a piston rod, an output oil pipe, a return oil pipe, an overflow oil pipe and an oil tank, the oil tank being fixed on a bracket, the second cylinder body being fixed on a bracket, the third piston on the piston rod being slidably mounted in the oil chamber of the second cylinder body, and the upper end of which is connected to a pressure plate, a rod chamber is formed between the top end of the oil chamber of the second cylinder body and the third piston, the top end of the return oil pipe is connected to the bottom of the oil tank, and the bottom end of the return oil pipe is connected to the rodless chamber, the top end of the output oil pipe is connected to the rod chamber, and the bottom end of the return oil pipe is connected to the rodless chamber, one end of the overflow oil pipe is connected to the rod chamber, and the other end of the overflow oil pipe is connected to the bottom of the oil tank, a first control valve is provided on the overflow oil pipe, a second control valve is provided on the return oil pipe, and a third control valve is provided on the output oil pipe.

[0008] In this solution, the pressure plate is slidably mounted on the bracket, which simplifies the clamping action and reduces the difficulty of adjustment. At the same time, a balancing assembly is provided on the bracket, and the gravity of the balancing weight is used to reduce the power required for the up and down adjustment of the pressure plate. At the same time, an energy storage assembly and a piston rod assembly are provided. The first cylinder body, the second cylinder body and the oil tank form a closed loop through the return oil pipe, the output oil pipe and the overflow oil pipe. The first cylinder body is connected to the second cylinder body through the output oil pipe, the second cylinder body and the oil tank are connected through the overflow oil pipe, the first cylinder body and the oil tank are connected through the return oil pipe, and the cylinder body and the oil pipe are filled with hydraulic oil. The opening and closing of the overflow oil pipe is controlled by the first control valve, the opening and closing of the return oil pipe is controlled by the second control valve, and the opening and closing of the output oil pipe is controlled by the third control valve.

[0009] The return oil pipe and the output oil pipe connected to the first cylinder are usually closed, the first piston and the first cylinder form a closed space, and the spring above the first piston supports the second piston, so that the upper end of the second piston leaks out of the workbench. When the workpiece is hoisted above the energy storage assembly of the workbench, the second piston is pressed down, the spring is compressed, and energy is stored.

[0010] When the workpiece is to be pressed, the return oil pipe and the overflow oil pipe are closed, the output oil pipe is opened, the spring pushes the second piston downward, the hydraulic oil enters the second cylinder through the output oil pipe, and pushes the piston rod of the piston rod assembly downward. Under the action of the piston rod, the pressing plate moves toward the workpiece and presses the workpiece, and then the output oil pipe is closed, and the installation operation of the pressing plate and the workpiece can be carried out.

[0011] After the workpiece is processed, lift the pressure plate, open the overflow oil pipe, and the counterweight drives the pressure plate and the piston rod to move upward until the stop block blocks the counterweight or pressure plate. The piston rod pushes the hydraulic oil into the oil tank through the overflow oil pipe. After closing the overflow oil pipe, open the return oil pipe.

[0012] When the workpiece is unloaded from the workbench, the first piston drives the spring and the second piston to move upward under the action of the hydraulic oil pressure in the first cylinder until the second piston abuts against the stopper, completes the reset action, and then closes the return oil pipe.

[0013] The energy storage component is stored by installing the workpiece, and the action of the piston rod is controlled by the control valve to complete the clamping. Then the energy storage component is reset under the gravity of the hydraulic oil, and the loading and unloading operation of the workpiece is completed in this cycle. The lifting and pressing actions of the pressure plate can be completed by controlling the three control valves on the oil circuit.

[0014] Furthermore, a steel ball is rotatably disposed on the upper end surface of the second piston.

[0015] A steel ball is provided on the upper end surface of the second piston for rolling, so as to facilitate the horizontal adjustment of the workpiece when it is placed on the workbench and prevent the workpiece from damaging the second piston.

[0016] Furthermore, the pressing plate is provided with a plurality of mounting grooves, and the bracket is provided with bolt holes matching the mounting grooves.

[0017] After the pressing plate and the workpiece are installed and fixed, the pressing plate is locked on the bracket with bolts through the installation groove to improve the connection rigidity between the pressing plate and the bracket and enhance the clamping stability of the workpiece.

[0018] Furthermore, the output oil pipe, the overflow oil pipe and the return oil pipe are all steel pipes.

[0019] The steel pipe has less elasticity, which prevents the oil pipe from expanding under high pressure and affecting the control effect.

[0020] The beneficial effects of the present invention are: when the clamping device of the intelligent boring and milling machining center of the robot component of the present invention is in use, the balancing component pulls the pressing plate to keep the pressing plate in a normally lifted state, the pressure of the workpiece on the workbench is used to compress the spring of the energy storage component to store energy, and the piston rod assembly is used to adjust the tension of the pressing plate. It is only necessary to control the three control valves on the oil circuit to complete the lifting and pressing down actions of the pressing plate. The device does not require additional power, works reliably, and the workpiece clamping operation is simple and convenient, with high clamping efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0022] Figure 1 is a schematic diagram of the present invention when the pressing plate is lifted;

[0023] Figure 2 It is a schematic diagram of the pressing plate of the present invention in a downward pressing state;

[0024] Figure 3 is a top view of the present invention;

[0025] Figure 4 It is a right side view of the pressing plate of the present invention;

[0026] Figure 5is an enlarged view of the piston rod assembly of the present invention when the pressure plate is pressed downward;

[0027] Figure 6 is an enlarged view of the piston rod assembly of the present invention when the pressure plate is lifted;

[0028] Figure 7 It is an enlarged view of the energy storage assembly of the present invention when the workbench is not loaded with a workpiece;

[0029] Figure 8 It is an enlarged view of the energy storage assembly of the present invention when a workpiece is loaded on the workbench;

[0030] Fig. 9 It is an enlarged view of the energy storage assembly of the present invention when the output oil pipe is opened.

[0031] In the figure: 1, bracket, 2, pressure plate, 201, fixing hole, 202, mounting groove, 3, balance assembly, 301, connecting rope, 302, left guide wheel, 303, right guide wheel, 304, balance weight, 305, stop block, 4, output oil pipe, 5, return oil pipe, 6, energy storage assembly, 601, first cylinder body, 602, first piston, 603, spring, 604, second piston, 605, stopper, 607, rodless chamber, 608, steel ball, 7, piston rod assembly, 701, second cylinder body, 702, piston rod, 7021, third piston, 703, overflow oil pipe, 704, oil tank, 705, first control valve, 706, second control valve, 707, third control valve, 708, rod chamber, 8, workpiece, 9, workbench, 10, machining center. DETAILED DESCRIPTION

[0032] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams that only illustrate the basic structure of the present invention in a schematic manner, and therefore only show the components related to the present invention, and directions and references (e.g., up, down, left, right, etc.) may only be used to help describe the features in the drawings. Therefore, the following specific embodiments are not to be taken in a limiting sense, and the scope of the subject matter claimed is limited only by the attached claims and their equivalents.

[0033] like Figure 1-9 As shown, a clamping device for an intelligent boring and milling machining center of robot components includes a bracket 1 and a pressing plate 2, wherein the pressing plate 2 is slidably mounted on the side of the bracket 1, and a fixing hole 201 is provided on the pressing plate 2, and further includes:

[0034] The balancing assembly 3 includes a connecting rope 301, a left guide wheel 302, a right guide wheel 303, a counterweight 304 and a stop block 305. The left guide wheel 302 and the right guide wheel 303 are fixed to the top of the bracket 1. One end of the connecting rope 301 is fixedly connected to the pressing plate 2, and the other end is fixedly connected to the counterweight 304 after passing through the left guide wheel 302 and the right guide wheel 303 in sequence. The weight of the counterweight 304 is greater than the weight of the pressing plate 2. The stop block 305 is fixed to the bracket 1 and is located below the counterweight 304.

[0035] An energy storage assembly 6, the energy storage assembly 6 comprises a first cylinder 601, a first piston 602, a second piston 604, a spring 603 and a stopper 605, the first cylinder 601 is fixed in the workbench 9 of the machining center, the first piston 602 and the second piston 604 are both slidably mounted in the oil chamber of the first cylinder 601, the lower end of the spring 603 is connected to the upper end surface of the first piston 602, and the upper end thereof is connected to the lower end surface of the second piston 604, a stopper 605 is provided at the upper end of the first cylinder 601, and a rodless chamber 607 is formed between the bottom of the oil chamber of the first cylinder 601 and the first piston 602;

[0036] The piston rod assembly 7 includes a second cylinder 701, a piston rod 702, an output oil pipe 4, a return oil pipe 5, an overflow oil pipe 703 and an oil tank 704. The oil tank 704 is fixed on the bracket 1. The second cylinder 701 is fixed on the bracket 1. The third piston 7021 on the piston rod 702 is slidably installed in the oil chamber of the second cylinder 701, and its upper end is connected to the pressure plate 2. A rod chamber 7 is formed between the top end of the oil chamber of the second cylinder 701 and the third piston 7021. 08, the top of the return oil pipe 5 is connected to the bottom of the oil tank 704, and the bottom end thereof is connected to the rodless chamber 607, the top of the output oil pipe 4 is connected to the rod chamber 708, and the bottom end thereof is connected to the rodless chamber 607, one end of the overflow oil pipe 703 is connected to the rod chamber 708, and the other end thereof is connected to the bottom of the oil tank 704, the overflow oil pipe 703 is provided with a first control valve 705, the return oil pipe 5 is provided with a second control valve 706, and the output oil pipe 4 is provided with a third control valve 707.

[0037] Preferably, the connecting rope 301 is a steel wire rope, and the left guide wheel 302 and the right guide wheel 303 are both fixed pulleys;

[0038] Preferably, the connecting rope 301 is a chain, and the left guide wheel 302 and the right guide wheel 303 are both sprockets;

[0039] Preferably, there is at least one set of the connecting rope 301, the left guide wheel 302 and the right guide wheel 303;

[0040] Preferably, the pressing plate 2 is fixed on the bracket 1 through a slider guide unit;

[0041] Preferably, the piston rod assembly 7 is fixed below the pressing plate 2 , and the piston rod 702 is connected to the lower end surface of the pressing plate 2 .

[0042] Preferably, the piston rod assembly 7 is fixed between the pressure plate 2 and the bracket 1 , and the piston rod 702 is connected to the side of the pressure plate 2 adjacent to the bracket 1 .

[0043] Preferably, a steel ball 608 is rollingly provided on the upper end surface of the second piston 604 .

[0044] Preferably, the pressing plate 2 is provided with a plurality of mounting grooves 202 , and the bracket 1 is provided with bolt holes matching the mounting grooves 202 .

[0045] After the clamping operation between the pressing plate 2 and the workpiece 8 is completed, the pressing plate 2 is fastened to the bracket 1 with bolts.

[0046] Preferably, the output oil pipe 4, the overflow oil pipe 703 and the return oil pipe 5 are all steel pipes.

[0047] When the clamping device of the intelligent boring and milling machining center of the robot component is used, it is fixed on the side of the workbench 9 relative to the machining center 10. When the workpiece 8 is not installed on the workbench 9, the upper end of the second piston 604 of the energy storage assembly 6 leaks out of the table surface of the workbench 9, and the return oil pipe 5 and the output oil pipe 4 connected to the first cylinder 601 are in a closed state. The pressing plate 2 is in a lifted state under the pulling of the counterweight 304.

[0048] When the workpiece 8 is hoisted above the energy storage assembly 6 of the workbench 9 , the second piston 604 is pressed down by the workpiece 8 and the spring 603 is compressed.

[0049] When preparing to press the workpiece with the pressing plate 2, close the return oil pipe 5 and the overflow oil pipe 703, open the output oil pipe 4, and the spring 603 pushes the second piston 604 downward. The hydraulic oil in the first cylinder body 601 enters the second cylinder body 701 through the output oil pipe 4 and pushes the piston rod 702 of the piston rod assembly 7 downward. Under the action of the piston rod 702, the pressing plate 2 moves toward the workpiece 8 and presses the workpiece 8, and then the output oil pipe 4 is closed, and the installation operation of the pressing plate 2 and the workpiece 8 can be carried out.

[0050] After the workpiece 8 is processed, the pressure plate 2 needs to be lifted, the overflow oil pipe 703 is opened, and the counterweight 304 drives the pressure plate 2 and the piston rod 702 to move upward until the stop block 305 blocks the counterweight 304 or the pressure plate 2. The piston rod 702 pushes the hydraulic oil into the oil tank 704 through the overflow oil pipe 703. After closing the overflow oil pipe 703, the return oil pipe 5 is opened.

[0051] When the workpiece 8 is removed from the workbench 9, the pressure above the second piston 604 disappears, and the first piston 602, under the action of the hydraulic oil pressure in the first cylinder 601, drives the spring 603 and the second piston 604 to move upward until the second piston 604 abuts against the stopper 605, completing the reset action, and then closing the return oil pipe 5.

[0052] The energy storage assembly 6 is energized by installing the workpiece 8, and the movement of the piston rod 702 is controlled by the control valve to complete the clamping of the pressure plate 2 and the workpiece 8. The energy storage assembly 6 is automatically reset under the action of the gravity of the hydraulic oil, and this cycle is repeated to complete the loading and unloading operations of the workpiece 8.

[0053] The above-mentioned ideal embodiments of the present invention are for inspiration. Through the above-mentioned description, relevant staff can make various changes and modifications without departing from the technical idea of ​​the present invention. The technical scope of the present invention is not limited to the contents of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A clamping device for an intelligent boring and milling machining center of robot components, comprising a bracket (1) and a clamping plate (2), wherein the clamping plate (2) is slidably mounted on the side of the bracket (1), and a fixing hole (201) is provided on the clamping plate (2), characterized in that: Also includes: The pressing plate (2) is provided with a plurality of mounting grooves (202), and the bracket (1) is provided with bolt holes matching the mounting grooves (202); A balancing assembly (3), the balancing assembly (3) comprising a connecting rope (301), a left guide wheel (302), a right guide wheel (303), a balancing weight (304) and a stop block (305), the left guide wheel (302) and the right guide wheel (303) being fixed on the top of the bracket (1), one end of the connecting rope (301) being fixedly connected to the pressure plate (2), and the other end of the connecting rope (301) being fixedly connected to the balancing weight (304) after passing through the left guide wheel (302) and the right guide wheel (303) in sequence, the weight of the balancing weight (304) being greater than the weight of the pressure plate (2), and the stop block (305) being fixed on the bracket (1) and being located below the balancing weight (304); An energy storage assembly (6), the energy storage assembly (6) comprising a first cylinder body (601), a first piston (602), a second piston (604), a spring (603) and a stopper (605), the first cylinder body (601) being fixed in a workbench (9) of a machining center, the first piston (602) and the second piston (604) being both slidably mounted in an oil chamber of the first cylinder body (601), the lower end of the spring (603) being connected to an upper end surface of the first piston (602), and the upper end of the spring (603) being connected to a lower end surface of the second piston (604), a stopper (605) being provided at the upper end of the first cylinder body (601), a rodless chamber (607) being formed between the bottom of the oil chamber of the first cylinder body (601) and the first piston (602), and a steel ball (608) being provided rollingly on the upper end surface of the second piston (604); and a piston rod assembly (7), the piston rod assembly (7) comprising a second cylinder body (701), a piston rod (702), an output oil pipe (4), a return oil pipe (5), an overflow oil pipe (703) and an oil tank (704), the oil tank (704) being fixed on a bracket (1), the second cylinder body (701) being fixed on the bracket (1), the third piston (7021) on the piston rod (702) being slidably mounted in an oil chamber of the second cylinder body (701), and the upper end of the third piston (7021) being connected to a pressure plate (2), a rod joint being formed between the top end of the oil chamber of the second cylinder body (701) and the third piston (7021) The top of the return oil pipe (5) is connected to the bottom of the oil tank (704), and the bottom of the return oil pipe (5) is connected to the rodless chamber (607). The top of the output oil pipe (4) is connected to the rod chamber (708), and the bottom of the output oil pipe (4) is connected to the rodless chamber (607). One end of the overflow oil pipe (703) is connected to the rod chamber (708), and the other end of the overflow oil pipe (703) is connected to the bottom of the oil tank (704). The overflow oil pipe (703) is provided with a first control valve (705), the return oil pipe (5) is provided with a second control valve (706), and the output oil pipe (4) is provided with a third control valve (707).

2. The clamping device for the intelligent boring and milling machining center of robot parts according to claim 1 is characterized in that: The output oil pipe (4), the overflow oil pipe (703) and the return oil pipe (5) are all steel pipes.

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