A dual-movement platform parallel machining equipment capable of heavy-duty milling

Abstract

This invention relates to the field of mechanical manufacturing. The objective is to provide a parallel machining equipment with dual moving platforms capable of heavy-duty milling. This equipment features high rigidity, high load capacity, and high precision, addressing the problems of insufficient rigidity, load capacity, and precision in traditional machining environments. The technical solution is a parallel machining equipment with dual moving platforms capable of heavy-duty milling; characterized in that: the combined moving platform includes a first moving platform and a second moving platform connected by an adapter; the adapter is a rectangular cylinder with through slots on all four sides, one end of which is horizontally hinged to the first moving platform, and the other end is fixedly connected to the second moving platform; of the four branches: the first and third branches each include a third revolute joint, an RPR prismatic joint, and a first revolute joint sequentially connected between the fixed platform and the first moving platform; the second and fourth branches each include a Hooke's joint, a UPR prismatic joint, and a second revolute joint sequentially connected between the fixed platform and the second moving platform.

Description

Technical Field

[0001] This invention relates to the field of mechanical manufacturing, specifically to a dual-motion platform parallel machining equipment capable of heavy-duty milling. Background Technology

[0002] Following my country's industrial reforms, industrial equipment and technology have rapidly developed in fields such as automobiles, shipbuilding, energy, aviation, and aerospace. This has led to increasingly higher demands for the processing of large and complex parts. The processing difficulty of various key basic components for these large and complex parts, characterized by intricate curved surfaces and diverse processing scenarios, has also increased. High-end sectors such as aerospace, defense, and automotive manufacturing are experiencing a surge in demand for large, complex, and irregularly shaped structural components. The processing of these parts requires high-precision machining through heavy-duty milling. These parts are often made of hard materials and are large in size, placing stringent requirements on the load capacity, rigidity, and machining accuracy of the processing equipment.

[0003] Traditional heavy-duty milling machining mainly relies on gantry CNC machine tools with a tandem structure. These machine tools achieve multi-axis motion through the tandem superposition of components such as the bed, column, slide, and spindle box, forming a dual-movement platform capable of heavy-duty milling. However, with the continuous improvement in requirements for machining efficiency, accuracy, and dynamic performance, the inherent defects of the tandem structure are becoming increasingly apparent.

[0004] Compared with traditional serial mechanisms, parallel mechanisms have advantages such as greater rigidity, stronger flexibility, compact structure, large load-bearing capacity, high positioning accuracy, and superior attitude adjustment capability. They can achieve additional machining of curved surfaces, which is conducive to more diversified machining and production at present, proving the practical value of parallel mechanisms in milling.

[0005] Therefore, industry professionals urgently need a dual-motion platform parallel machining equipment that can achieve heavy-duty milling. Summary of the Invention

[0006] The purpose of this invention is to overcome the shortcomings in the above-mentioned background technology and provide a parallel machining equipment with a dual-motion platform that can realize heavy-duty milling. This equipment has the characteristics of high rigidity, high load and high precision, so as to solve the problems of low rigidity and load capacity and insufficient precision of machining equipment in traditional machining scenarios.

[0007] The technical solution provided by this invention is as follows: A parallel machining equipment with two moving platforms capable of heavy-duty milling includes a fixed platform supported by a bracket, a combined moving platform with a spindle head, four branches arranged in parallel between the fixed platform and the combined moving platform, and a slide located in front of the spindle head for clamping the workpiece; characterized in that: The combined moving platform includes a first moving platform and a second moving platform connected by a connector; the connector is a rectangular cylinder with through slots on all four sides, one end of the connector is horizontally hinged to the first moving platform, and the other end of the connector is fixedly connected to the second moving platform. Of the four branches: the first and third branches each include a third revolute joint, an RPR prismatic joint, and a first revolute joint connected sequentially between the fixed platform and the first moving platform; the second and fourth branches each include a Hooke joint, an UPR prismatic joint, and a second revolute joint connected sequentially between the fixed platform and the second moving platform.

[0008] Both the first moving platform and the second moving platform have an opening in the middle; one end of the adapter extends into the opening of the first moving platform and is then hinged to the first moving platform through a horizontally set hinge shaft, and the other end extends into the opening of the second moving platform and is then fixed to the second moving platform.

[0009] The spindle head passes through the through groove and enters the adapter for installation and positioning; a tool hole is opened on one end face of the adapter, and the tool installed on the spindle head extends outward from the tool hole to perform machining operations.

[0010] The RPR sliding pair includes a strip-shaped RPR base, an elongated groove disposed on the RPR base and extending through two sides of the base, an RPR guide rail located on the two groove walls of the elongated groove, and an RPR slider embedded in the elongated groove and slidingly engaged with the RPR guide rail; the RPR ball screw is rotatably positioned in the elongated groove, the RPR nut engages with the RPR ball screw and is fixed to the RPR slider, and the RPR servo motor is fixed on the RPR base and coaxially connected to the RPR ball screw for driving.

[0011] The UPR sliding pair includes a strip-shaped UPR base, an elongated groove disposed on the UPR base and extending through two sides of the base, UPR guide rails located on the two groove walls of the elongated groove, and a UPR slider embedded in the elongated groove and slidingly engaged with the UPR guide rails; a UPR ball screw is rotatably positioned in the elongated groove, a UPR nut engages with the UPR ball screw and is fixed to the UPR slider, and a UPR servo motor is fixed to the UPR base and coaxially connected to the UPR ball screw for driving.

[0012] The two vertically arranged frame bars in the RPR connector are fixed to the RPR slider respectively; two coaxial rotating shafts are vertically fixed on the two horizontally arranged frame bars of the RPR connector. The two rotating shafts are rotatably engaged with the two shaft holes on the top and bottom sidewalls of the fixed platform opening to form the third rotating pair.

[0013] The two frame bars of the UPR connector, which are arranged vertically and corresponding to each other, are respectively provided with shaft holes. The two shaft holes are rotatably engaged with the rotating shaft that is horizontally fixed on the UPR slider to form one rotating shaft of the Hooke's hinge. Two rotating shafts with the same axis are vertically fixed on the two frame bars of the UPR connector. The two rotating shafts are rotatably engaged with the two shaft holes on the top and bottom sidewalls of the fixed platform opening to form the second rotating shaft of the Hooke's hinge.

[0014] In the first and third branches, the axes of the first and third revolute joints are parallel to each other and arranged vertically; in the second and fourth branches, the axes of the second revolute joints are parallel to each other and arranged horizontally, the axis of rotation of the fixed platform connected by the Hooke joint is arranged vertically, and the axis of rotation of the UPR slider connected by the Hooke joint is arranged horizontally.

[0015] The slide table includes a slide table sliding pair and a first fixed frame and a second fixed frame that move horizontally through the slide table sliding pair; the slide table sliding pair includes a long strip base that is horizontally fixed to the ground, two slide rails that are arranged parallel to each other and fixed on the base and equipped with a plurality of sliders; a ball screw is mounted on the base and located in the middle of the two slide rails, and a nut seat that cooperates with the ball screw is also connected to the plurality of sliders through a connecting component; a first servo motor is mounted on the base and coaxially connected to the ball screw.

[0016] The first and second fixed frames are both vertically arranged and their bottom ends are respectively fixed to the plurality of sliders; a clamp is set on each side of the two fixed frames facing each other through a clamping joint for clamping the workpiece to be processed; the rotating shafts of the two clamping joints are respectively set on the two fixed frames and arranged coaxially; the two fixed frames are also respectively equipped with a second servo motor and a third servo motor to drive the rotating shafts of the corresponding clamping joints.

[0017] The beneficial effects of this invention are as follows: Compared with traditional serial machining equipment, the parallel machining equipment with dual moving platforms proposed in this invention, which can realize heavy-duty milling, has three degrees of freedom on the moving platform. With the movement of the slide table and the rotation of the workpiece, it can realize five-axis machining, achieving three rotational and two translational motions, for a total of five degrees of freedom. It has the advantages of high dynamic performance, high load capacity, and high stiffness-to-weight ratio, and can achieve higher machining efficiency and higher machining accuracy. It is particularly suitable for machining parts such as aerospace structural parts (most of which are thin-walled structures, and some parts are curved surfaces, with complex structures and high machining accuracy requirements). In addition, the moving platform of this machine tool can realize relatively complex movements, can mill large parts with complex curved surfaces, and can avoid defects such as milling damage to the surface of the part during over-quadrant machining. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of an embodiment of the present invention.

[0019] Figure 2 This is a schematic diagram of the installation structure of the four branches in an embodiment of the present invention (in the figure, the plane of the fixed platform is arranged vertically).

[0020] Figure 3 This is a three-dimensional structural diagram of the RPR branch in an embodiment of the present invention.

[0021] Figure 4 This is a three-dimensional structural diagram of the UPR branch in an embodiment of the present invention.

[0022] Figure 5 This is a schematic diagram of the spindle head structure in an embodiment of the present invention.

[0023] Figure 6 This is a three-dimensional structural diagram of the adapter in an embodiment of the present invention.

[0024] Figure 7 This is a schematic diagram of the slide structure in an embodiment of the present invention.

[0025] Figure 8 This is a schematic diagram of the base structure (top view) in an embodiment of the present invention. Markings in the diagram: 1. Support; 2. Fixed platform; 3. First branch; 4. Second branch; 5. Third branch; 6. Fourth branch; 7. First moving platform; 8. Second moving platform; 9. Spindle head; 10. Slide table; 11. Adapter; 31. RPR base; 32. RPR ball screw; 33. RPR slider; 34. RPR servo motor; 35. RPR guide rail; 36. First rotary joint axis; 37. RPR connector; 41. UPR base; 42. UPR ball screw; 38. UPR... PR connector 43, UPR slider 44, UPR servo motor 45, UPR guide rail 46, second rotary joint axis 47, spindle 91, cutting tool 92, first servo motor 101, ball screw 102, slide rail 103, second servo motor 104, first fixed frame 105, machined part 106, second fixed frame 107, third servo motor 108, nut seat 109, slider 1010, base 1011, hinge hole 111. Detailed Implementation

[0026] The present invention will be further described below with reference to the embodiments shown in the accompanying drawings.

[0027] Positional conventions in the diagram: Figure 2 A rectangular, flat fixed platform is arranged vertically, with its upper and lower edges arranged horizontally. The horizontal setting and parallel to the lower edge of the fixed platform is the X-axis, the vertical setting is the Y-axis, and the horizontal setting and perpendicular to the plane of the fixed platform is the Z-axis.

[0028] See Figure 1 , Figure 2The present invention proposes a parallel machining equipment with two moving platforms capable of heavy-duty milling, mainly comprising a support 1, a fixed platform 2, a first branch chain 3, a second branch chain 4, a third branch chain 5, a fourth branch chain 6, a first moving platform 7, a second moving platform 8, a spindle head 9, and a slide table 10. The two supports 1 are parallel to each other and vertically fixed to the ground, and the fixed platform 2 is inclinedly mounted on the support 1. See also... Figure 2 The fixed platform has four symmetrically arranged rectangular openings, with two rectangular openings on the left and right at the same height, and two rectangular openings on the top and bottom aligned vertically; one end of each of the four branches is inserted into these four openings and connected to the fixed platform through kinematic pairs.

[0029] The first branch 3 and the third branch 5 are RPR-type motion branches; one end of each branch is connected to the fixed platform 2 via a third revolute joint, and the other end is connected to the left and right sides of the first moving platform 7 via a first revolute joint. Figure 2 In the middle, the first and third revolute joint shafts of the two branches are both arranged vertically; one end of the second branch 4 and the fourth branch 6 are respectively connected to the fixed platform through Hooke's joints, and the other end are respectively connected to the upper and lower sides of the second moving platform through the second revolute joint. Figure 2 In the process, the two second rotating joint shafts are both arranged horizontally, and the two shafts of each Hooke joint are arranged horizontally and vertically respectively; the main spindle head 9 is fixed to the adapter 11, and the two ends of the adapter 11 are respectively connected to the first moving platform 7 and the second moving platform 8; the slide is located below the front side of the main spindle head.

[0030] Furthermore, the axes of the two rotating joints connecting the first branch 3 and the third branch 5 of the fixed platform 2 are parallel to each other and parallel to the Y-axis; in the second branch 4 and the fourth branch 6, the axes of the rotating shafts connecting the fixed platform 2 via two Hooke joints are parallel to each other and parallel to the Y-axis.

[0031] like Figure 2 , Figure 3As shown, both the first branch 3 and the third branch 5 include an RPR sliding pair capable of moving along the length of the branch. The RPR sliding pair includes an RPR base 31, an RPR guide rail 35, and an RPR slider 33. The RPR base is strip-shaped and has a long groove parallel to the length of the RPR base and extending through two corresponding sides. The RPR ball screw 32 is rotatably positioned in the long groove via a bearing seat. The two opposing groove walls serve as the RPR guide rails 35. The two parallel outer sides of the RPR slider 33 slide in cooperation with the two opposing RPR guide rails. A cavity for accommodating the RPR ball screw is provided through the middle of the RPR slider. An RPR nut that cooperates with the RPR ball screw is embedded and fixed in the cavity and fixed to the RPR slider. RPR connector 37 is a rectangular frame formed by four frame bars. This frame horizontally surrounds the outside of the RPR base, and the plane of the rectangular frame is perpendicular to the length direction of the RPR base. Two vertically arranged frame bars in RPR connector 37 are respectively fixed to the RPR slider via connecting elements. A rotating shaft is vertically fixed to two horizontally arranged frame bars in RPR connector 37. This rotating shaft is divided into two coaxial sections, vertically fixed to the top and bottom ends of the RPR connector (i.e., the top and bottom ends of the two horizontally arranged frame bars). This rotating shaft rotatably engages with two shaft holes in the opening of the fixed platform, thus forming the third rotating pair. The two shaft holes are located on the top and bottom sidewalls of the opening, respectively, and are parallel to the plane of the fixed platform and coaxially arranged. The RPR servo motor 34 is fixed to one end of the moving platform opposite to the RPR base 31, and can drive the RPR ball screw 32 to rotate, thereby driving the RPR base 31 to translate along the branch length direction; so that the first branch 3 or the third branch 5 moves relative to the fixed platform.

[0032] like Figure 2 , Figure 4As shown, the second branch 4 and the fourth branch 6 are UPR type motion branches; each branch includes a UPR sliding pair that can move along the length of the branch. The UPR sliding pair includes a UPR base 41, a UPR guide rail 46, and a UPR slider 44. The UPR base is strip-shaped and has long grooves parallel to the length of the UPR base and passing through the two corresponding sides. The UPR ball screw 42 is rotatably positioned in the long groove through a bearing seat. The two opposing groove walls of the long groove serve as guide rails 46. The two parallel outer sides of the UPR slider slide in cooperation with the two opposing guide rails 46. A cavity for accommodating the UPR ball screw is provided through the middle of the UPR slider. The UPR nut that cooperates with the UPR ball screw is embedded and fixed in the cavity and fixed to the UPR slider. The UPR connector 43 is a rectangular frame formed by four frame bars, which horizontally surrounds the outside of the UPR base. Two vertically arranged frame bars in the UPR connector 43, corresponding horizontally, each have shaft holes. These two shaft holes rotatably engage with a rotating shaft horizontally fixed to the UPR slider, thus forming one rotating shaft of the Hooke's hinge. Two horizontally arranged frame bars in the UPR connector 43, corresponding vertically, each have a vertically fixed rotating shaft (this rotating shaft is divided into two coaxial sections, vertically fixed to the top and bottom ends of the UPR connector; i.e., the top and bottom ends of the two horizontally arranged frame bars). This rotating shaft rotatably engages with two shaft holes in the opening of the fixed platform (the two shaft holes are located on the top and bottom sidewalls of the opening, respectively), thus forming the second rotating shaft structure of the Hooke's hinge. Therefore, the shaft holes on the UPR connector 43, the two mutually perpendicular rotating shafts, and the shaft holes at the opening of the fixed platform combine to form the Hooke's hinge. The UPR servo motor 45 is fixed to one end of the UPR base facing away from the moving platform. It can drive the UPR ball screw to rotate, thereby driving the UPR base to translate along the length of the branch, so that the first branch 3 or the third branch 5 moves relative to the fixed platform.

[0033] When the servo motors in the four branches are started, they can simultaneously drive the corresponding bases forward or backward, realizing the horizontal movement of the two-motion platform and the spindle head 9 along the Z-axis; when the UPR servo motors 45 in the second branch 4 and the fourth branch 6 are not started, and the RPR servo motors in the first branch 3 and the third branch 5 are started, driving one first base forward and the other first base backward, the two-motion platform and the spindle head 9 can rotate around the Y-axis; when the RPR servo motors 34 in the first branch 3 and the third branch 5 are not started at the same time, and the UPR servo motors 45 in the second branch 4 and the fourth branch 6 are started, driving one second base forward and the other second base backward, the two-motion platform and the spindle head 9 can rotate around the X-axis.

[0034] like Figure 5As shown, the spindle head 9 includes a spindle 91 and a cutting tool 92 (such as a milling cutter or a drill bit); the milling cutter 92 is fixed on the spindle 91.

[0035] Both the first moving platform 7 and the second moving platform 8 are U-shaped frames with an opening in the middle, connected by a connector 11 to form a combined moving platform. Figure 6 As shown: The adapter is a rectangular cylinder with through slots extending along the generatrix on all four sides, penetrating the cylinder wall. The spindle head can be installed inside the adapter through these slots (conventional installation method). One end of the adapter has a horizontally arranged hinge hole 111 perpendicular to its length. The two ends of the hinge shaft fixed to this hole extend outward and engage with two shaft holes (located on the inner walls of the left and right sides of the opening) of the first moving platform 7, forming a fourth rotating pair. A tool hole is provided in the center of the other end face of the adapter. The milling cutter 92 carried by the spindle head 9 installed in the adapter can extend outward from this tool hole for machining operations. At the same time, the end of the adapter near the tool hole is also inserted into the middle opening of the second moving platform and fixed as a whole, thus enabling movement under the control of the two moving platforms.

[0036] like Figure 7 , Figure 8As shown, the slide table 10 includes a slide table sliding pair and a first fixed frame 105 and a second fixed frame 107 that move horizontally through the slide table sliding pair. In the slide table sliding pair, a long strip-shaped base 1011 is horizontally fixed to the ground, and two slide rails 103 are arranged parallel to each other and fixed on the base 1011. Several sliders 1010 are provided on the two slide rails. A ball screw 102 is mounted on the base at the middle position of the two slide rails through a bearing seat and is parallel to the two slide rails. A first servo motor 101 is also mounted on the base and is coaxially connected to the ball screw 102 through a coupling. The first fixed frame 105 and the second fixed frame 107 are both vertically arranged and equipped with clamps. The bottom ends of the fixed frames are respectively fixed to the sliders of the two slide rails 93, so that the two fixed frames are placed on the left and right sides of the base with a distance between them. The nut seat 109 that cooperates with the ball screw is also connected to the slider through a connecting component. Thus, when the first servo motor is started, it drives the two fixed frames to move along the X-axis (plane movement parallel to the fixed platform). Two fixed frames are each equipped with a clamp via a clamping joint on opposite sides, used to clamp the workpiece 106 to be processed. The rotating shafts of the two clamping joints are respectively set in the shaft holes of the two fixed frames and arranged coaxially. The two fixed frames are also equipped with a second servo motor 104 and a third servo motor 108 to drive the rotating shafts of the corresponding clamping joints. The first servo motor 101 drives the ball screw 102 to rotate, thereby driving the two fixed frames to translate along the slide rail 103, so that the workpiece 106 clamped on the two clamps moves along the X-axis. The second servo motor 104 and the third servo motor 108 are driven simultaneously, and can drive the workpiece 106 to rotate around the X-axis through the clamps, thereby adjusting the processing position of the workpiece.

[0037] The sliding pairs contained in the first branch 3, the second branch 4, the third branch 5 and the fourth branch 6 of this invention are driving pairs. In addition, the workpiece carried by the slide can translate and rotate along the X direction. Therefore, there are three rotational and two translational degrees of freedom between the spindle head 9 and the slide 10, which can perform five-axis linkage machining on the workpiece.

[0038] This invention is not limited to the specific embodiments described above. Anyone inspired by this invention can derive other forms of efficient over-constraint parallel mechanism equipment for heavy-duty milling and their usage methods. All equivalent variations and modifications made within the scope of the claims of this invention should be considered within the scope of this invention.

Claims

1. A parallel machining equipment with dual moving platforms capable of heavy-duty milling, comprising a fixed platform (2) supported by a bracket (1), a combined moving platform with a spindle head (91), four branches arranged in parallel between the fixed platform and the combined moving platform, and a slide (10) located in front of the spindle head for clamping the workpiece; characterized in that: The combined moving platform includes a first moving platform (7) and a second moving platform (8) connected by a connector (11); the connector is a rectangular cylinder with through slots on all four sides, one end of the connector is horizontally hinged to the first moving platform, and the other end of the connector is fixedly connected to the second moving platform. Of the four branches: the first branch (3) and the third branch (5) each include a third revolute joint, an RPR prismatic joint and a first revolute joint connected in sequence between the fixed platform and the first moving platform; the second branch (4) and the fourth branch (6) each include a Hooke joint, an UPR prismatic joint and a second revolute joint connected in sequence between the fixed platform and the second moving platform.

2. The parallel machining equipment with dual-moving platforms capable of heavy-duty milling according to claim 1, characterized in that: Both the first moving platform (7) and the second moving platform (8) have openings in the middle. One end of the adapter extends into the opening of the first moving platform and is then hinged to the first moving platform through a horizontally set hinge shaft. The other end extends into the opening of the second moving platform and is then fixed to the second moving platform.

3. The parallel machining equipment with dual-moving platforms capable of heavy-duty milling according to claim 2, characterized in that: After passing through the through groove, the spindle head enters the middle position of the adapter (11) for installation and positioning; a tool hole is opened on one end face of the adapter, and the tool (92) installed on the spindle head extends outward from the tool hole to perform machining operations.

4. The parallel machining equipment with dual-moving platforms capable of heavy-duty milling according to claim 3, characterized in that: The RPR sliding pair includes a strip-shaped RPR base (31), an elongated groove disposed on the RPR base and passing through two sides of the base, an RPR guide rail (35) located on the two groove walls of the elongated groove, and an RPR slider (33) embedded in the elongated groove and slidingly engaged with the RPR guide rail; an RPR ball screw (32) is rotatably positioned in the elongated groove, an RPR nut engages with the RPR ball screw and is fixed to the RPR slider, and an RPR servo motor (34) is fixed on the RPR base and coaxially connected to the RPR ball screw for driving.

5. The parallel machining equipment with dual-moving platforms capable of heavy-duty milling according to claim 4, characterized in that: The UPR sliding pair includes a strip-shaped UPR base (41), a long groove disposed on the UPR base and passing through the two sides of the base, a UPR guide rail (46) located on the two groove walls of the long groove, and a UPR slider (44) embedded in the long groove and slidingly engaged with the UPR guide rail; a UPR ball screw (42) is rotatably positioned in the long groove, a UPR nut engages with the UPR ball screw and is fixed to the UPR slider, and a UPR servo motor (45) is fixed on the UPR base and coaxially connected to the UPR ball screw for driving.

6. The parallel machining equipment with dual-moving platforms capable of heavy-duty milling according to claim 5, characterized in that: The two vertically arranged frame bars in the RPR connector (37) are fixed to the RPR slider respectively; two coaxial rotating shafts are vertically fixed on the two horizontally arranged frame bars of the RPR connector respectively, and the two rotating shafts are rotatably engaged with the two shaft holes on the top side wall and bottom side wall of the fixed platform opening to form the third rotating pair.

7. The parallel machining equipment with dual-moving platforms capable of heavy-duty milling according to claim 5, characterized in that: The UPR connector (43) has two vertically arranged frame bars with shaft holes. The two shaft holes are rotated and engaged with the rotating shaft fixed horizontally on the UPR slider (44) to form one rotating shaft of the Hooke hinge. The two horizontally arranged frame bars of the UPR connector have two coaxial rotating shafts fixed vertically. The two rotating shafts are rotated and engaged with the two shaft holes on the top and bottom sidewalls of the fixed platform opening to form the second rotating shaft of the Hooke hinge.

8. The parallel machining equipment with dual-moving platforms capable of heavy-duty milling according to claim 6, characterized in that: In the first branch (3) and the third branch (5), the axes of the first and third revolute joints are parallel to each other and arranged vertically; in the second branch (4) and the fourth branch (6), the axes of the second revolute joints are parallel to each other and arranged horizontally, the axis of rotation of the fixed platform connected by the Hooke hinge is arranged vertically, and the axis of rotation of the UPR slider connected by the Hooke hinge is arranged horizontally.

9. The parallel machining equipment with dual-moving platforms capable of heavy-duty milling according to claim 8, characterized in that: The slide table includes a slide table sliding pair and a first fixed frame (105) and a second fixed frame (107) that move horizontally through the slide table sliding pair; the slide table sliding pair includes a long strip base (1011) that is horizontally fixed to the ground, and two slide rails (103) that are arranged parallel to each other and fixed on the base and equipped with a plurality of sliders (1010); a ball screw (102) is mounted on the base and located in the middle of the two slide rails, and a nut seat (109) that cooperates with the ball screw is also connected to the plurality of sliders; a first servo motor (101) is also mounted on the base and coaxially connected to the ball screw (102).

10. The parallel machining equipment with dual-moving platforms capable of heavy-duty milling according to claim 9, characterized in that: The first fixed frame (105) and the second fixed frame (107) are both vertically arranged and their bottom ends are respectively fixed on several sliders (1010); a clamp is set on one side of the two fixed frames facing each other through a clamping joint, which is used to clamp the workpiece to be processed (106) together; the rotating shafts of the two clamping joints are respectively set on the two fixed frames and arranged coaxially; the two fixed frames are also respectively equipped with a second servo motor (104) and a third servo motor (108) to drive the rotating shafts of the corresponding clamping joints.

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