Four-axis for numerical control machining equipment

Abstract

The utility model discloses a four-axis for numerical control machining equipment, and relates to the field of four-axis clamp equipment, and the four-axis for the numerical control machining equipment is characterized in that a rotary workbench is provided with a machining space; the clamp mechanism is used for clamping a workpiece, and the clamp mechanism is arranged on the rotary workbench and arranged in the machining space; the jaw driving mechanism comprises a jaw body, a power piece and a sliding assembly, one end of the jaw body is connected with the rotary working table, the power piece is arranged at the other end of the jaw body, the power piece further extends into the jaw body and is connected with the sliding assembly, the sliding assembly is connected with the clamp mechanism, and the clamp mechanism is arranged on the rotary working table. The sliding assembly is further connected with the clamp body in a sliding mode, and the power piece drives the sliding assembly to slide along the clamp body so as to drive the clamp mechanism to clamp or loosen the workpiece. According to the technical scheme, the four shafts for the numerical control machining equipment can automatically achieve clamping, and the machining efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of four-axis fixture equipment, and particularly relates to a four-axis for numerical control machining equipment. Background Technique

[0002] For a three-axis machining center equipment, when machining a workpiece fixed on the workbench, only one side can be machined. For workpieces that need multi-sided machining, a four-axis with a dividing plate is often used at present. However, at present, the four-axis requires manual clamping of the workpiece, which seriously affects the machining efficiency and is prone to mechanical damage. Content of the Utility Model

[0003] The main purpose of the utility model is to provide a four-axis for numerical control machining equipment, aiming to solve the technical problems that manual operation is required in the current four-axis workpiece clamping, which affects the machining efficiency and is prone to mechanical damage.

[0004] To achieve the above purpose, a four-axis for numerical control machining equipment proposed by the utility model includes:

[0005] A rotary table, which is provided with a machining space;

[0006] A fixture mechanism for clamping the workpiece, which is arranged on the rotary table and in the machining space;

[0007] A jaw driving mechanism, which includes a jaw body, a power component and a sliding component. One end of the jaw body is connected to the rotary table, the power component is arranged at the other end of the jaw body, and the power component also extends into the jaw body and is connected to the sliding component. The sliding component is connected to the fixture mechanism and is also slidably connected to the jaw body. The power component drives the sliding component to slide along the jaw body to drive the fixture mechanism to clamp or loosen the workpiece.

[0008] In an embodiment, the sliding component includes a movable cover and a slider. The slider is movably arranged in the jaw body. A chute is opened at the top of the jaw body, and the movable cover is slidably connected to the chute. A slant hook is arranged at the top of the slider, and a slant groove is opened at the bottom of the movable cover. The slant hook is embedded and connected in the slant groove. The movable cover is connected to the rotary table, and the slider is connected to the power component.

[0009] In an embodiment, the slant hook is provided with a first inclined surface, the slant groove is provided with a second inclined surface, and the first inclined surface and the second inclined surface are arranged oppositely. The sliding component further includes a movable block, which is hemispherical. An activity groove is opened in the movable cover, and the movable block is movably arranged in the activity groove, and the flat surface of the movable block is used to contact the first inclined surface.

[0010] In one embodiment, the power component includes a piston rod and a coupling sleeve. The slider is connected with a connecting rod. One end of the piston rod extends into the coupling sleeve and is fixedly connected with the coupling sleeve. One end of the connecting rod is connected with the slider, and the other end passes through the slider and is connected with the coupling sleeve. The coupling sleeve is arranged in the clamp body.

[0011] In one embodiment, the jaw driving mechanism further includes a pneumatic control device. The pneumatic control device is fixedly arranged on one side of the clamp body. The pneumatic control device includes a pneumatic control master valve and a switching valve. The pneumatic control master valve is the main control switch for pneumatically controlling or shutting down the power of the jaw driving mechanism with one key. The power component further includes a plurality of cylinders, and the plurality of cylinders are respectively connected with the switching valve.

[0012] In one embodiment, the four-axis further includes a self-locking mechanism. The self-locking mechanism includes a self-locking cylinder, an inclined block connecting plate and a pressing inclined block. The self-locking cylinder is arranged on one side of the clamp body. The output end of the self-locking cylinder is connected with the inclined block connecting plate. A fixed inclined block and a stop block are further arranged in the clamp body. The pressing inclined block is arranged in the clamp body and is located between the fixed inclined block and the stop block. The self-locking cylinder drives the inclined block connecting plate to move so that the pressing inclined block approaches or moves away from the fixed inclined block. The fixed inclined block is fixedly connected with the output end of the power component. The pressing inclined block is provided with a long hole, and the power component also passes through the long hole.

[0013] In one embodiment, the fixture mechanism includes a first jaw plate and a second jaw plate. The first jaw plate is arranged on one side of the machining space of the rotary table. The second jaw plate is arranged on the sliding assembly, and the sliding assembly drives the second jaw plate to approach or move away from the first jaw plate from the other side of the machining space to clamp or release the workpiece. The first jaw plate and the second jaw plate are respectively provided with clamping openings to cooperate with clamping the workpiece.

[0014] In one embodiment, the fixture mechanism further includes at least one set of clamping assemblies. The clamping assembly includes a jaw fixing plate, a sliding rod, a sleeve rod and a spring. The sleeve rod and the spring are sleeved on the outer periphery of the sliding rod. One end of the sliding rod passes through the jaw fixing plate and is locked by a nut. The other end of the sliding rod is connected with the adjacent jaw fixing plate or the rotary table. The jaw fixing plate is movably connected with the rotary table, and the first jaw plate and the second jaw plate are correspondingly arranged on the opposite two sides of the jaw fixing plate.

[0015] In one embodiment, the rotary table includes a base, a rotary seat, a tailstock and a cross bridge. The rotary seat is provided with a left connecting plate, and the tailstock is provided with a right connecting plate. One end of the cross bridge is connected to the left connecting plate, and the other end is connected to the right connecting plate. The right connecting plate is connected to the clamp body, the sliding assembly passes through the right connecting plate and is connected to the fixture mechanism, the left connecting plate is also connected to the fixture mechanism, and the fixture mechanism is movably arranged on the cross bridge.

[0016] In one embodiment, the fourth axis further includes a homing mechanism. The homing mechanism includes a homing fixing plate, a homing driving part and a blanking part. The homing fixing plate is connected to the rotary table. The blanking part is located above the fixture mechanism. The homing driving part is arranged on the homing fixing plate, and the homing driving part is also drivingly connected to the blanking part to drive the blanking part to push the workpiece.

[0017] The technical solution of the present utility model is to set a processing space on the rotary table and install the fixture mechanism in the processing space, and drive the fixture mechanism to clamp the workpiece through the jaw driving mechanism, which eliminates the need for manual clamping, avoids mechanical injuries, and greatly improves production efficiency. Specifically, the clamp body is connected to the rotary table, the power part is connected to the clamp body, and the power part is also connected to the sliding assembly and drives the sliding assembly to slide along the clamp body. The sliding assembly is also connected to the fixture mechanism. In this way, the sliding of the sliding assembly can drive the fixture assembly to clamp or release the workpiece, realizing automatic clamping of the workpiece, reducing the clamping time, and improving the efficiency. In addition, the fourth axis for numerical control machining provided by the present utility model has high stability, ensures the machining accuracy and quality, can improve the machining efficiency, and has strong versatility, with extremely high practical value. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on the structures shown in these drawings.

[0019] Figure 1 It is a schematic structural diagram of the fourth axis embodiment for a numerical control machining equipment provided by the present utility model;

[0020] Figure 2 It is an exploded structural diagram of the fourth axis embodiment for a numerical control machining equipment provided by the present utility model;

[0021] Figure 3 It is an exploded structural diagram of the rotary table of the fourth axis embodiment for a numerical control machining equipment provided by the present utility model;

[0022] Figure 4 Structural schematic diagram of the jaw drive mechanism of the four-axis embodiment for a numerical control machining device provided by the present utility model;

[0023] Figure 5 Exploded structural schematic diagram of the jaw drive mechanism of the four-axis embodiment for a numerical control machining device provided by the present utility model;

[0024] Figure 6 Cross-sectional structural schematic diagram of the jaw drive mechanism of the four-axis embodiment for a numerical control machining device provided by the present utility model;

[0025] Figure 7 Exploded structural schematic diagram of the pneumatic control device of the four-axis embodiment for a numerical control machining device provided by the present utility model;

[0026] Figure 8 Structural schematic diagram of the power component of the four-axis embodiment for a numerical control machining device provided by the present utility model;

[0027] Figure 9 Structural schematic diagram of the self-locking mechanism of the four-axis embodiment for a numerical control machining device provided by the present utility model;

[0028] Figure 10 Structural schematic diagram of the fixture mechanism of the four-axis embodiment for a numerical control machining device provided by the present utility model;

[0029] Figure 11 Partial exploded structural schematic diagram of the fixture mechanism of the four-axis embodiment for a numerical control machining device provided by the present utility model;

[0030] Figure 12 Structural schematic diagram of the return mechanism of the four-axis embodiment for a numerical control machining device provided by the present utility model.

[0031] Explanation of the reference numerals in the attached drawings:

[0032] 100, workpiece;

[0033] 200, rotary table; 210, base; 220, rotating seat; 230, tailstock; 240, left connecting plate; 250, bridge plate; 260, right connecting plate;

[0034] 300, Clamping jaw drive mechanism; 310, Power member; 311, Pneumatic cylinder for pushing; 312, Boosting cylinder; 313, Piston rod; 314, Coupling sleeve; 315, First pin; 316, Second pin; 320, Clamping body; 330, Stopper; 340, Fixed inclined block; 350, Connecting rod; 360, Slide block; 370, Movable cover; 380, Movable block; 390, Pneumatic control device; 391, Main pneumatic control valve; 392, Switch valve; 393, Pressure regulating valve; 394, Pressure gauge; 395, Fixed box;

[0035] 400, Self-locking mechanism; 410, Self-locking cylinder; 420, Inclined block connecting plate; 430, Pressing inclined block; 440, Guide post; 450, Linear bearing;

[0036] 500, Clamping fixture mechanism; 510, Clamping assembly; 511, Clamping jaw fixing plate; 512, Sliding rod; 513, Sleeve rod; 514, Spring; 520, First clamping jaw plate; 530, Second clamping jaw plate; 540, Clamping opening;

[0037] 600, Return mechanism; 610, Return fixing plate; 620, Return driving member; 630, Ejector bottom plate; 640, Adjusting screw; 650, Ejector plate;

[0038] A1, Clamping position 1; A2, Clamping position 2; A3, Clamping position 3; A4, Clamping position 4.

[0039] The realization, functional features and advantages of the purpose of the present utility model will be further described with reference to the embodiments and the accompanying drawings. Detailed implementation manners

[0040] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0041] It should be noted that if there are directional indications (such as up, down, left, right, front, back,...) involved in the embodiments of the present utility model, the directional indications are only used to explain the relative positional relationship and movement conditions between components in a specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0042] In addition, if the descriptions such as "first", "second", etc. are involved in the embodiments of the present utility model, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first", "second" may explicitly or implicitly include at least one such feature. In addition, if "and / or" or "and / or" appears throughout the text, its meaning includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, or solution B, or the solution where A and B are satisfied simultaneously. In addition, the technical solutions between the respective embodiments can be combined with each other, but it must be based on the fact that those of ordinary skill in the art can implement it. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0043] In the prior art, for a three-axis machining center device, when machining a workpiece fixed on the workbench, only one side can be machined. For workpieces that require multi-sided machining, a four-axis with a dividing plate is often used at present. However, at present, the four-axis requires manual clamping of the workpiece, which seriously affects the machining efficiency and is prone to mechanical injuries.

[0044] The present utility model provides a four-axis for a numerical control machining device.

[0045] Please refer to Figures 1 to 2 As shown, in an embodiment of the present utility model, the four-axis for a numerical control machining device includes: a rotary table 200, a fixture mechanism 500, and a jaw driving mechanism 300. Among them, the rotary table 200 is provided with a machining space; the fixture mechanism 500 is used for clamping the workpiece 100, the fixture mechanism 500 is arranged on the rotary table 200 and is arranged in the machining space; the jaw driving mechanism 300 includes a jaw body 320, a power member 310, and a sliding component. One end of the jaw body 320 is connected to the rotary table 200, the power member 310 is arranged at the other end of the jaw body 320, and the power member 310 also extends into the jaw body 320 and is connected to the sliding component. The sliding component is connected to the fixture mechanism 500, and the sliding component is also slidably connected to the jaw body 320. The power member 310 drives the sliding component to slide along the jaw body 320 to drive the fixture mechanism 500 to clamp or loosen the workpiece 100.

[0046] In this embodiment, it can be understood that the rotary table 200 of the four-axis drives the fixture mechanism 500 to rotate, and the fixture mechanism 500 is used for clamping the workpiece 100 to facilitate the machining of the workpiece 100. The jaw driving mechanism 300 controls the clamping of the workpiece 100 to achieve automatic control of the clamping operation and improve the machining efficiency.

[0047] Among them, refer to Figure 3As shown in the figure, the rotary table 200 includes a base 210, a rotary seat 220, a tailstock 230, and a bridge plate 250. The rotary seat 220 is provided with a left connecting plate 240, the tailstock 230 is provided with a right connecting plate 260. One end of the bridge plate 250 is connected to the left connecting plate 240, and the other end is connected to the right connecting plate 260. The right connecting plate 260 is connected to the clamp body 320. The sliding assembly passes through the right connecting plate 260 and is connected to the fixture mechanism 500. The left connecting plate 240 is also connected to the fixture mechanism 500, and the fixture mechanism 500 is movably arranged on the bridge plate 250.

[0048] Specifically, the rotary seat 220 and the tailstock 230 are respectively fixedly installed at opposite ends of the base 210, and the space between the rotary seat 220 and the tailstock 230 forms a processing space. The fixture assembly is located in the processing space. The fixture assembly also cooperates with the left connecting plate 240. The end of the sliding assembly passes through the tailstock 230 and the right connecting plate 260 and enters the processing space to be connected to the fixture mechanism 500. One end of the bridge plate 250 is connected to the left connecting plate 240, and the other end is connected to the right connecting plate 260, so that the bridge plate 250 spans across the processing space. The right connecting plate 260 is rotatably connected to the tailstock 230. The rotary seat 220 drives the left connecting plate 240, the bridge plate, and the right connecting plate 260 to rotate, so that the fixture mechanism 500 rotates, facilitating the machining of the workpiece 100. The fixture mechanism 500 drives the fixture mechanism 500 to clamp and release the workpiece 100 through the sliding assembly.

[0049] In this embodiment, one end of the clamp body 320 is installed on the rotary table 200 by screws or the like. It can be understood that the power member 310 includes a fixed part and a driving part. Among them, the fixed part is installed at one end of the clamp body 320 away from the rotary table 200, and the driving part extends into the clamp body 320 and is connected to the sliding assembly to drive the sliding assembly to slide along the clamp body 320. The fixture mechanism 500 is located in the processing space of the rotary table 200. One end of the sliding assembly extends from one side of the processing space into the processing space and is connected to the fixture mechanism 500. The fixture mechanism 500 also cooperates with the other side of the processing space. The other end of the sliding assembly is connected to the driving part of the power member 310. The driving part drives the sliding assembly to slide along the clamp body 320 to drive the fixture mechanism 500 to clamp or release the workpiece 100 in the processing space.

[0050] The technical solution of the present utility model is to set a processing space on the rotary table 200, install the fixture mechanism 500 in the processing space, and drive the fixture mechanism 500 to clamp the workpiece 100 through the jaw driving mechanism 300, eliminating the need for manual loading and clamping, avoiding mechanical injuries, and greatly improving production efficiency. Specifically, the pliers body 320 is connected to the rotary table 200, the power component 310 is connected to the pliers body 320, and the power component 310 is also connected to the sliding component and drives the sliding component to slide along the pliers body 320. The sliding component is also connected to the fixture mechanism 500. In this way, the sliding of the sliding component can drive the fixture component to clamp or release the workpiece 100, realizing automatic clamping of the workpiece 100, reducing the loading and clamping time, and improving efficiency. In addition, the four-axis for numerical control machining provided by the present utility model has high stability, ensures machining accuracy and quality, can improve machining efficiency, and has strong versatility, with extremely high practical value.

[0051] In one embodiment, referring to Figures 4 to 8 As shown, the sliding component includes a movable cover 370 and a slider 360. The slider 360 is movably arranged in the pliers body 320. A chute is opened at the top of the pliers body 320. The movable cover 370 is slidably connected to the chute. An inclined hook is provided at the top of the slider 360. An inclined groove is opened at the bottom of the movable cover 370. The inclined hook is embedded and connected in the inclined groove. The movable cover 370 is connected to the rotary table 200, and the slider 360 is connected to the power component 310.

[0052] In the specific implementation process, a cavity is opened in the pliers body 320. A chute is opened at the top of the pliers body 320. The slider 360 is movably arranged in the cavity. A sliding part is convexly provided at the bottom of the movable cover 370. The sliding part matches the chute and slides along the chute. A concave inclined groove is formed at the bottom of the movable cover 370 near one end. An inclined hook is convexly formed at the top of the slider 360. The inclined hook cooperates with the inclined groove, and the inclined hook is accommodated in the inclined groove, thereby realizing the connection between the slider 360 and the movable cover 370. The slider 360 is connected to the power component 310. The power component 310 drives the slider 360 to move, driving the movable cover 370 to move, so as to drive the fixture mechanism 500 to act.

[0053] Further, the inclined hook is provided with a first inclined surface, the inclined groove is provided with a second inclined surface, and the first inclined surface and the second inclined surface are oppositely arranged. The sliding component further includes a movable block 380. The movable block 380 is hemispherical. A movable groove is opened in the movable cover 370. The movable block 380 is movably arranged in the movable groove, and the flat surface of the movable block 380 is used to contact the first inclined surface.

[0054] Specifically, the first inclined surface and the second inclined surface are arranged in parallel cooperation. The movable cover 370 is recessed from the second inclined surface to form a movable groove. The inner wall of the movable groove is a spherical surface and is matched with the movable block 380. The movable block 380 is movably arranged in the movable groove. The first inclined surface of the inclined hook contacts the plane of the movable block 380. The inclined hook of the slider 360 enables the movable block 380 to move during the movement, avoiding direct friction with the inclined groove. In this way, the movable block 380 can compensate for the angular deviation caused by the friction between the slider 360 and the movable cover 370 during long-term use, thereby ensuring the movement accuracy of the movable cover 370 driving the fixture mechanism 500 and improving the processing accuracy.

[0055] In one embodiment, the power member 310 includes a piston rod 313 and a coupling sleeve 314. The slider 360 is connected with a connecting rod 350. One end of the piston rod 313 extends into the coupling sleeve 314 and is fixedly connected with the coupling sleeve 314. One end of the connecting rod 350 is connected with the slider 360, and the other end passes through the slider 360 and is connected with the coupling sleeve 314. The coupling sleeve 314 is arranged in the clamp body 320.

[0056] In this embodiment, the power member 310 adopts a cylinder structure. The power member 310 is installed at one end of the clamp body 320. The piston rod 313 extends into the clamp body 320 and is connected with the slider 360 through the coupling sleeve 314 and the connecting rod 350 to drive the slider to move. Among them, the piston rod 313 is fixedly connected with the coupling sleeve 314, and the connecting rod 350 is connected with the coupling sleeve 314. Furthermore, the piston rod 313 is connected with the connecting rod 350 through the coupling sleeve 314. In this way, the telescopic movement of the piston rod 313 can drive the connecting rod 350 to telescopic movement through the coupling sleeve 314, and then drive the slider 360 to move. It can be understood that the coupling sleeve 314, the connecting rod 350 and the piston rod 313 can be connected by connecting pieces such as bolts or pins, and only the degrees of freedom of the three in the axial direction need to be restricted. In the specific implementation process, the power member 310 further includes a first pin 315 and a second pin 316. Among them, the first pin 315 passes through the coupling sleeve 314 and the piston rod 313 in the radial direction to realize the connection between the piston rod 313 and the coupling sleeve 314. There are two second pins 316. A ring groove is provided on the outer peripheral wall of the connection. The ring groove extends in the circumferential direction. The two second pins 316 are inserted into the coupling sleeve 314 and the connecting rod 350 is located between the two second pins 316. The second pin 316 is also located in the ring groove. In this way, the two pins can restrict the displacement of the connecting rod 350 and the coupling sleeve 314 in the axial direction, and the piston rod 313 can drive the connecting rod 350 to move axially through the coupling sleeve 314.

[0057] In one embodiment, the jaw driving mechanism 300 further includes a pneumatic control device 390. The pneumatic control device 390 is fixedly arranged on one side of the jaw body 320. The pneumatic control device 390 includes a pneumatic control main valve 391 and a switching valve 392. The pneumatic control main valve 391 is the main control switch for starting or closing the power of the jaw driving mechanism 300 with one key. The power member 310 further includes a plurality of cylinders, and the plurality of cylinders are respectively connected to the switching valve 392.

[0058] In the specific implementation process, the power member 310 is a multiple-acting cylinder. The multiple-acting cylinder includes a pushing cylinder 311 and several boosting cylinders 312. The multiple-acting cylinder is fixedly installed at one end of the jaw body 320. The pneumatic control device 390 controls and adjusts the driving force of the multiple-acting cylinder, and then adjusts the clamping force of the fixture mechanism 500. Specifically, in this embodiment, the pneumatic control main valve 391 can start or close the power of the jaw driving mechanism 300 with one key, acting as a switch. The switching valve 392 is connected to the boosting cylinders 312 for opening or closing the boosting cylinders 312 in the jaw driving mechanism 300. It can also start or close the boosting cylinders 312 according to the usage requirements to achieve the effect of adjusting the number of working cylinders, so as to adjust the thrust output by the jaw driving mechanism 300. In this way, one, two or more of the multiple cylinders of the jaw driving mechanism 300 can be ventilated for work, and the cylinder diameters are different. By adjusting the air pressure and the number of working cylinders, the maximum thrust provided by the jaw driving mechanism 300 can reach 2 tons, and the minimum thrust can reach 80 kg. It can not only meet the strong clamping for rough machining of steel parts with high workpiece clamping stability, but also meet the small-force clamping of plastic parts without workpiece deformation, improving the applicability.

[0059] Further, referring to Figure 7 As shown, the pneumatic control device 390 further includes a pressure regulating valve 393, a pressure gauge 394 and a fixing box 395. It should be noted that the pneumatic control main valve 391, the switching valve 392, the pressure regulating valve 393 and the pressure gauge 394 are located in the fixing box 395 and connected in the same pneumatic pipeline system to control the output driving force of the power member 310. In this embodiment, the pressure regulating valve 393 adjusts the air pressure of the compressed air in the power member 310 to adjust the output thrust of the power member 310, and the pressure gauge 394 is used to display the air pressure of the compressed air in the power member 310 for easy adjustment.

[0060] In the specific implementation process, the pneumatic control device 390 can realize the automatic control of clamping and loosening of the workpiece 100, reduce the clamping time, improve the clamping efficiency, and then improve the production efficiency, reduce the labor intensity of the operator and reduce the labor cost. In addition, it can be understood that the loading and unloading of the workpiece 100 can be manually operated, and the pneumatic control device 390 controls the clamping and loosening, which can also reduce the manual labor intensity.

[0061] In one embodiment, referring to Figure 9As shown in the figure, the four-axis further includes a self-locking mechanism 400. The self-locking mechanism 400 includes a self-locking cylinder 410, an inclined block connecting plate 420, and a pressing inclined block 430. The self-locking cylinder 410 is disposed on one side of the pliers body 320. The output end of the self-locking cylinder 410 is connected to the inclined block connecting plate 420. A fixed inclined block 340 and a stop block 330 are further disposed in the pliers body 320. The pressing inclined block 430 is disposed in the pliers body 320 and is located between the fixed inclined block 340 and the stop block 330. The self-locking cylinder 410 drives the inclined block connecting plate 420 to move, so that the pressing inclined block 430 approaches or moves away from the fixed inclined block 340. The fixed inclined block 340 is fixedly connected to the output end of the power member 310. The pressing inclined block 430 is provided with a long hole, and the power member 310 also passes through the long hole.

[0062] In the specific implementation process, the cylinder barrel of the self-locking cylinder 410 is fixed at the bottom of the pliers body 320. The driving part of the self-locking cylinder 410 is connected to the inclined block connecting plate 420. The pressing inclined block 430 is fixedly installed on the inclined block connecting plate 420. In this way, the self-locking cylinder 410 can drive the pressing inclined block 430 to move. Both the stop block 330 and the fixed inclined block 340 are located in the pliers body 320. Among them, the stop block 330 is fixed at one end of the pliers body 320 close to the power member 310. The fixed inclined block 340 is fixedly connected to the piston rod 313 and moves synchronously with the piston rod 313. The piston rod 313 is movably connected to the stop block 330. In this embodiment, the piston rod 313 of the power member 310 passes through the fixed inclined block 340 and the stop block 330. There is an interval space between the fixed inclined block 340 and the stop block 330 for accommodating the pressing inclined block 430. The piston rod 313 also passes through the pressing inclined block 430. The pressing inclined block 430 is provided with a long hole. The piston rod 313 passes through the long hole and is movably connected to the long hole. The pressing inclined block 430 and the fixed inclined block 340 are respectively provided with inclined surfaces. The two inclined surfaces are parallel and cooperate with each other. The pressing inclined block 430 moves perpendicular to the piston rod 313 under the drive of the self-locking cylinder 410. When the driving part of the self-locking cylinder 410 retracts, the inclined surface of the pressing inclined block 430 approaches the inclined surface of the fixed inclined block 340, and the other side of the pressing inclined block 430 moves along the stop block 330 and fits with the stop block 330, preventing the pressing inclined block 430 from retreating, and further resisting the fixed inclined block 340, thus preventing the jaw driving mechanism 300 from being forced to retreat, playing a self-locking function. When the driving part of the self-locking cylinder 410 extends, the inclined surface of the pressing inclined block 430 moves away from the inclined surface of the fixed inclined block 340. The long hole is used to avoid the piston rod 313, and the jaw driving mechanism 300 can move smoothly. The movement direction of the self-locking mechanism 400 is perpendicular to the direction of the force applied to the jaw driving mechanism 300. The jaw driving mechanism 300 will not retreat under force, playing a self-locking function, improving the stability of the four-axis for clamping the workpiece 100, and further ensuring the machining accuracy and product quality of the machining.

[0063] In this embodiment, the self-locking mechanism 400 further includes a guiding component. The guiding component includes a guide post 440 and a linear bearing 450. One end of the guide post 440 is connected to the inclined block connecting plate 420, and the other end extends towards the cylinder barrel of the self-locking cylinder 410. The linear bearing 450 is fixed to the bottom of the cylinder barrel, and the guide post 440 is also connected to the linear bearing 450. Driven by the inclined block connecting plate 420, the guide post 440 moves along the linear bearing 450, thereby guiding the inclined block connecting plate 420 and improving the stability of pressing the inclined block 430.

[0064] In one embodiment, referring to Figures 10 to 11 As shown, the fixture mechanism 500 includes a first jaw plate 520 and a second jaw plate 530. The first jaw plate 520 is disposed on one side of the processing space of the rotary table 200, and the second jaw plate 530 is disposed on the sliding component. The sliding component drives the second jaw plate 530 to approach or move away from the first jaw plate 520 from the other side of the processing space to clamp or release the workpiece 100. The first jaw plate 520 and the second jaw plate 530 are respectively provided with clamping openings 540 to cooperate in clamping the workpiece 100.

[0065] In the specific implementation process, the first jaw plate 520 is connected to the left connecting plate 240 of the rotary table 200. A through hole is provided in the right connecting plate 260 of the rotary table 200. One end of the movable cover 370 passes through the through hole in the right connecting plate 260 and extends into the processing space. The second jaw plate 530 is fixed to the movable cover 370. The power component 310 drives the movable cover 370 to move to drive the second jaw plate 530 to approach or move away from the first jaw plate 520. The workpiece 100 is located within the clamping opening 540, thereby realizing clamping or releasing of the workpiece 100. In addition, the first jaw plate 520 and the second jaw plate 530 can be modified or replaced according to the requirements of different workpieces 100, and have strong versatility.

[0066] Furthermore, the fixture mechanism 500 further includes at least one set of clamping components 510. The clamping component 510 includes a jaw fixing plate 511, a sliding rod 512, a sleeve rod 513, and a spring 514. The sleeve rod 513 and the spring 514 are sleeved on the outer periphery of the sliding rod 512. One end of the sliding rod 512 passes through the jaw fixing plate 511 and is locked by a nut. The other end of the sliding rod 512 is connected to the adjacent jaw fixing plate 511 or the rotary table 200. The jaw fixing plate 511 is movably connected to the rotary table 200, and the first jaw plate 520 and the second jaw plate 530 are correspondingly arranged on the opposite sides of the jaw fixing plate 511.

[0067] In the specific implementation process, the jaw fixing plate 511 includes a bearing part and a connecting part. The first jaw plate 520 and the second jaw plate 530 are installed on both sides of the bearing part. The connecting part passes through the bridge plate 250 and is movably connected to the bridge plate 250. It can be understood that the bridge plate 250 is provided with a long avoidance hole in the clamping direction of the clamping mechanism, and the connecting part is movably connected to the avoidance hole. The sliding rod 512, the sleeve rod 513 and the spring 514 are located below the bridge plate 250. The sleeve rod 513 and the spring 514 are sleeved on the sliding rod 512. Nuts are connected to both ends of the sliding rod 512. Specifically, one end of the sliding rod 512 passes through the connecting part of the jaw fixing plate 511 and is locked by a nut, and the other end passes through the connecting part of the adjacent jaw fixing plate 511 and is connected to a nut. This nut plays a role in limiting. It should be noted that the end of the sliding rod 512 of the clamping assembly 510 close to the left connecting plate 240 passes through the left connecting plate 240 and is movably connected to the connecting plate. In addition, the sliding rods 512 of adjacent jaw fixing plates 511 are staggered from each other to avoid mutual interference.

[0068] In this embodiment, the first jaw plate 520 of the jaw fixing plate 511 cooperates with the second jaw plate 530 of the adjacent jaw fixing plate 511 to clamp the workpiece 100. Specifically, when the jaw driving mechanism 300 drives the clamping mechanism 500 to clamp, the adjacent two jaw fixing plates 511 approach each other, and the first jaw plate 520 and the second jaw plate 530 approach each other to clamp the workpiece 100, and the spring 514 is compressed. When the jaw driving mechanism 300 moves in the reverse direction, the spring 514 drives the jaw fixing plate 511 to move back to its original position to release the workpiece 100. Further, in order to improve the stability of the jaw fixing plate 511, two groups of connecting parts are connected below the bearing part. The connecting parts are symmetrically arranged, and two groups of sliding rods 512, sleeve rods 513 and springs 514 are respectively provided and connected to the corresponding connecting parts.

[0069] In one embodiment, referring to Figure 12 As shown, the four-axis further includes a homing mechanism 600. The homing mechanism 600 includes a homing fixing plate 610, a homing driving member 620 and a blanking member. The homing fixing plate 610 is connected to the rotary table 200. The blanking member is located above the clamping mechanism 500. The homing driving member 620 is provided on the homing fixing plate 610, and the homing driving member 620 also drives and connects the blanking member to drive the blanking member to push the workpiece 100.

[0070] In the specific implementation process, there are two home - position fixing plates 610, which are respectively fixed at the left and right ends of the bridge plate 250. The upper end of the home - position fixing plate 610 is equipped with a home - position driving member 620, and the home - position driving member 620 adopts a driving cylinder structure. The blanking member includes a blanking bottom plate 630 and a blanking plate 650. Among them, the connecting ends of the blanking bottom plate 630 are respectively connected to the two home - position driving members 620. A plurality of adjusting screws 640 are provided on the blanking bottom plate 630 and are locked by nuts. The adjusting screw 640 is also connected to the blanking plate 650. The home - position driving member 620 drives the blanking bottom plate 630 to move, so that the blanking plate 650 pushes the workpiece 100. By adjusting the position of the nut on the adjusting screw 640, the position of the blanking plate 650 can be adjusted to match workpieces 100 of different sizes. It should be noted that one side of the clamping opening 540 is a positioning edge. In this embodiment, the blanking plate 650 pushes the workpiece 100 to move, so that one side of the workpiece 100 fits against the positioning edge, which is used for positioning the workpiece 100. This ensures that during the automated production process, the workpiece 100 is accurately placed at the positioning edge of the clamping opening 540, improving the machining accuracy and further enhancing the quality of the processed product.

[0071] During the NC machining process of the four - axis provided by the present utility model, the loading of the workpiece 100 is completed manually or by a loading and unloading mechanism, and then the clamping of the workpiece 100 is controlled. Specifically, before machining, according to the actual situation of the workpiece 100, the air pressure is adjusted by rotating the pressure regulating valve 393, and the switch valve 392 is opened or closed to adjust the clamping force of the fixture mechanism 500. And before the workpiece 100 is machined, the pneumatic master valve 391 of the four - axis is in the open state, the piston rod 313 of the double - acting cylinder of the jaw driving mechanism 300 is in the retracted position, the jaws on the multi - station adjustable fixture are in the open state, and the self - locking cylinder 410 is in the unlocked state.

[0072] Specifically, as shown in the figure, the fixture mechanism 500 is provided with four clamping positions, which are named from left to right as: clamping position one A1, clamping position two A2, clamping position three A3, and clamping position four A4;

[0073] Step 1: Place 4 workpieces 100 to be machined at the four clamping positions of the multi - station adjustable fixture respectively. The home - position mechanism 600 ensures that the workpieces 100 are placed accurately and in place;

[0074] Step 2: Control the pneumatic master valve 391 to change from the open state to the closed state;

[0075] Step 3: The piston rod 313 of the double - acting cylinder of the jaw driving mechanism 300 extends, driving the jaw plate fixed on the movable cover 370 to move leftward. From right to left, it sequentially pushes the workpiece 100 to be machined and the fixture mechanism 500 to move leftward until the jaw plates on both sides of the workpiece 100 to be machined clamp the workpiece 100 to be machined, and the spring 514 in the fixture mechanism 500 is in a compressed state;

[0076] Step 4: Synchronously, the piston rod 313 of the self-locking cylinder 410 retracts, driving the pressing wedge block 430 to press against the fixed wedge block 340. Driven by the self-locking cylinder 410, the pressing wedge block 430 will not retract even when subjected to the impact force during the machining of the clamped workpiece 100, playing a self-locking role;

[0077] Step 5: The numerical control machining equipment starts to machine the workpiece 100 to be machined on the four-axis;

[0078] Step 6: The numerical control machining equipment completes the machining of the workpiece 100 to be machined on the four-axis;

[0079] Step 7: Control the pneumatic control main valve 391 to change from the closed state to the open state;

[0080] Step 8: The piston rod 313 of the self-locking cylinder 410 extends, driving the pressing wedge block 430 away from the fixed wedge block 340, and the jaw driving mechanism 300 is in the unlocked state;

[0081] Step 9: Synchronously, the piston rod 313 of the double-acting cylinder of the jaw driving mechanism 300 retracts, driving the jaw plate fixed on the movable cover 370 to move to the right. Under the action of the spring 514 in the fixture mechanism 500, the workpiece 100 to be machined and the fixture mechanism 500 move to the right until the spring 514 returns to its original length;

[0082] Step 10: Take away the machined workpiece 100 on the four-axis;

[0083] Repeat steps 1 to 10 to continuously complete the loading, machining, and unloading of the workpiece 100 to be machined.

[0084] It should be noted that the picking and placing of the workpiece 100 and the control of the valve in the above steps can be manually operated or automatically controlled by the control system.

[0085] The above is only an exemplary embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structural transformation made under the inventive concept of the present invention, or direct / indirect application in other related technical fields, is included in the patent protection scope of the present invention.

Claims

1. A four-axis for a numerically controlled machining device, characterized in that, Comprising: A rotary table provided with a processing space; A fixture mechanism for clamping a workpiece, the fixture mechanism being provided on the rotary table and in the processing space; A jaw drive mechanism, the jaw drive mechanism comprising a jaw body, a power member and a sliding assembly, one end of the jaw body being connected to the rotary table, the power member being provided at the other end of the jaw body and extending into the jaw body and connected to the sliding assembly, the sliding assembly being connected to the fixture mechanism and also slidingly connected to the jaw body, the power member driving the sliding assembly to slide along the jaw body to drive the fixture mechanism to clamp or release the workpiece.

2. The four-axis for a numerically controlled machining device according to claim 1, wherein The sliding assembly includes a movable cover and a slider, the slider being movably provided in the jaw body, a chute being provided at the top of the jaw body, the movable cover being slidably connected to the chute, an inclined hook being provided at the top of the slider, an inclined groove being provided at the bottom of the movable cover, the inclined hook being embedded and connected in the inclined groove, the movable cover being connected to the rotary table, and the slider being connected to the power member.

3. The four-axis for a numerically controlled machining device according to claim 2, wherein, The inclined hook is provided with a first inclined surface, the inclined groove is provided with a second inclined surface, and the first inclined surface and the second inclined surface are oppositely arranged. The sliding assembly further includes a movable block which is hemispherical, the movable cover is provided with a movable groove, the movable block is movably provided in the movable groove, and the flat surface of the movable block is used to contact the first inclined surface.

4. The four-axis for a numerically controlled machining device according to claim 2, characterized in that, The power member includes a piston rod and a coupling sleeve, the slider is connected with a connecting rod, one end of the piston rod extends into the coupling sleeve and is fixedly connected with the coupling sleeve, one end of the connecting rod is connected with the slider, the other end passes through the slider and is connected with the coupling sleeve, and the coupling sleeve is provided in the jaw body.

5. The four-axis for a numerically controlled machining device according to claim 1, wherein The jaw drive mechanism further includes a pneumatic control device, the pneumatic control device being fixedly provided on one side of the jaw body, the pneumatic control device including a pneumatic control master valve and a switching valve, the pneumatic control master valve being a master control switch for pneumatically controlling or closing the power of the jaw drive mechanism with one key, and the power member further includes a plurality of cylinders, and the plurality of cylinders are respectively connected to the switching valve.

6. The four-axis for a numerically controlled machining device according to claim 1, characterized in that, The four-axis further includes a self-locking mechanism, the self-locking mechanism including a self-locking cylinder, an inclined block connecting plate and a pressing inclined block, the self-locking cylinder being provided on one side of the jaw body, the output end of the self-locking cylinder being connected to the inclined block connecting plate, a fixed inclined block and a stop block being further provided in the jaw body, the pressing inclined block being provided in the jaw body and located between the fixed inclined block and the stop block, the self-locking cylinder driving the inclined block connecting plate to move so that the pressing inclined block approaches or moves away from the fixed inclined block, the fixed inclined block being fixedly connected to the output end of the power member, and the pressing inclined block being provided with a long hole, and the power member further passes through the long hole.

7. The four-axis for a numerically controlled machining device according to claim 1, characterized in that, The fixture mechanism includes a first jaw plate and a second jaw plate. The first jaw plate is arranged on one side of the processing space of the rotary table. The second jaw plate is arranged on the sliding component, and the sliding component drives the second jaw plate to approach or move away from the first jaw plate from the other side of the processing space to clamp or release the workpiece. The first jaw plate and the second jaw plate are respectively provided with clamping openings to cooperate in clamping the workpiece.

8. The four-axis for a numerically controlled machining device according to claim 7, characterized in that, The fixture mechanism further includes at least one set of clamping components. Each clamping component includes a jaw fixing plate, a sliding rod, a sleeve rod and a spring. The sleeve rod and the spring are sleeved on the outer periphery of the sliding rod. One end of the sliding rod passes through the jaw fixing plate and is locked by a nut. The other end of the sliding rod is connected to the adjacent jaw fixing plate or the rotary table. The jaw fixing plate is movably connected to the rotary table, and the first jaw plate and the second jaw plate are correspondingly arranged on the opposite sides of the jaw fixing plate.

9. The four-axis for a numerically controlled machining device according to claim 1, wherein, The rotary table includes a base, a rotary seat, a tailstock and a bridge plate. The rotary seat is provided with a left connecting plate, and the tailstock is provided with a right connecting plate. One end of the bridge plate is connected to the left connecting plate, and the other end is connected to the right connecting plate. The right connecting plate is connected to the clamp body. The sliding component passes through the right connecting plate and is connected to the fixture mechanism. The left connecting plate is also connected to the fixture mechanism, and the fixture mechanism is movably arranged on the bridge plate.

10. The four-axis for a numerically controlled machining device according to claim 1, characterized in that, The four-axis further includes a homing mechanism. The homing mechanism includes a homing fixing plate, a homing driving member and a blanking member. The homing fixing plate is connected to the rotary table. The blanking member is located above the fixture mechanism. The homing driving member is arranged on the homing fixing plate, and the homing driving member is also drivingly connected to the blanking member to drive the blanking member to push the workpiece.

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