Multi-axis numerical control machining equipment with pre-tightening force function

Abstract

The invention relates to the technical field of numerical control machine tool parts, in particular to multi-axis numerical control machining equipment with a pre-tightening force function, which comprises multi-axis numerical control machining equipment, a Z-axis machining part is arranged above the multi-axis numerical control machining equipment, and a Y-axis moving part is arranged in front of the multi-axis numerical control machining equipment; an X-axis moving pre-tightening part is arranged above the Y-axis moving part; the device has the beneficial effects that the X-axis moving pre-tightening component is carried on the Y-axis moving component, so that the first moving workbench moves to drive the second moving workbench to translate in the X-axis direction of the machine tool, and the first pressure sensing device feeds back the actually borne X-direction force value data until the X-direction force value data is matched with the preset force value of the system; and at the moment, the system sends an instruction to brake and hold the X-axis servo motor, so that the rotary table has constant pre-tightening force on the workpiece, the device can be suitable for machining various workpieces, workpiece deformation is prevented, and machining stability and precision are improved.

Description

Technical Field

[0001] The invention relates to the technical field of numerical control machine tool components, in particular to a multi-axis numerical control processing device with a pre-tightening force function. Background Art

[0002] Multi-axis CNC machining equipment is a very important type of equipment in modern manufacturing. They can perform precise machining in multiple axes at the same time, greatly improving machining efficiency and accuracy. Multi-axis CNC machining equipment usually includes three-axis, four-axis, five-axis or even more-axis configurations, which are suitable for machining workpieces with complex shapes and high-precision requirements. In order to better meet the needs of fully automated production, when machining parts with complex curved surfaces, in order to ensure their machining accuracy, a certain preload force needs to be maintained during clamping. In the prior art, the equipment cannot achieve fully automatic clamping of the workpiece, and the workpiece that needs to be preloaded can only be adjusted manually, which results in problems such as easy deformation of the workpiece, large machining errors, and low efficiency.

[0003] The existing Chinese patent document with publication number CN119017113A proposes a wheel hub bearing end face processing tooling, which solves the above technical problems in a manner that the outer ring of the wheel hub bearing is clamped and fixed by a fixing device, the inner ring of the wheel hub bearing is provided with a center hole, and the centering shaft is installed in the center hole. However, it is impossible to automatically pre-tighten the workpiece when clamping and it is also impossible to determine and correct the deflection error in real time.

[0004] Therefore, the present invention proposes a multi-axis CNC machining equipment with a preload function to solve the problem in the prior art that CNC machining equipment cannot automatically preload the workpiece when clamping it. An X-axis preload component is designed and the clamping component is improved. A pressure sensing device is used for feedback. The mobile workbench is used to set the preload data. The deflection of the workpiece is automatically corrected. The equipment can be used for machining a variety of workpieces, prevent workpiece deformation, and improve machining stability and accuracy. Summary of the invention

[0005] The object of the present invention is to provide a multi-axis CNC machining device with a preload function to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a multi-axis CNC machining equipment with a preload function, comprising a multi-axis CNC machining equipment, a Z-axis machining component is arranged above the multi-axis CNC machining equipment, a Y-axis moving component is arranged in front of the multi-axis CNC machining equipment, an X-axis moving preload component is arranged above the Y-axis moving component, the X-axis moving preload component comprises an X-preload axis mounting frame, a fixed worktable, a movable worktable one and a movable worktable two, a turntable is fixedly installed above the fixed worktable and the movable worktable two, a workpiece fixing correction component is arranged on one side of the output shaft of the turntable, and the workpiece fixing correction component comprises a workpiece fixing table, a movable seat and a deflection correction disk.

[0007] Preferably, the bottom of the X-preload shaft mounting frame is fixedly connected to the top of the sliding component of the Y-axis moving component by bolts, the fixed workbench is fixedly mounted on one side of the upper surface of the X-preload shaft mounting frame by bolts, and the movable workbench is slidably mounted on the other side of the upper surface of the X-preload shaft mounting frame, and a limiting slide rail matching the movable workbench is fixedly mounted on the upper surface of the X-preload shaft mounting frame.

[0008] Preferably, the movable workbench 2 is arranged above the movable workbench 1, a threaded sleeve is fixedly installed on the lower surface of the movable workbench 1, a pushing and extruding sleeve is fixedly installed on the upper surface of the movable workbench 1, and a limiting slide groove matched with the pushing and extruding sleeve is arranged on the upper surface of the movable workbench 2, a pressure sensing device mounting plate is fixedly installed inside the slide groove of the movable workbench 2, the pressure sensing device 1 is fixedly installed on the middle part of the pressure sensing device mounting plate by bolts, a slide groove matched with the pressure sensing device mounting plate is arranged on the side wall of the pushing and extruding sleeve, and the pushing and extruding sleeve is arranged on the outside of the pressure sensing device 1.

[0009] Preferably, an X-axis preload screw is rotatably installed inside the X-axis preload shaft mounting frame, and an X-axis servo motor for driving the X-axis preload screw to rotate is fixedly installed inside the side of the X-axis preload shaft mounting frame close to the fixed workbench, and the interior of the threaded sleeve is connected to the outer surface of the X-axis preload screw by a thread.

[0010] Preferably, the workpiece fixing table is fixedly mounted on one end of the output shaft of the turntable, the movable seat is fixedly mounted on the middle part of the side surface of the workpiece fixing table, movable blocks are symmetrically and slidably mounted on both sides of the interior of the movable seat, a two-way telescopic rod is fixedly mounted on the middle part of the interior of the movable seat, the output ends of the two-way telescopic rod are respectively fixedly connected to the inner surface of the movable block, and a workpiece fixing clamp is fixedly mounted on the outer surface of the movable block by bolts.

[0011] Preferably, a push rod movable groove is provided in the middle of one end of the workpiece fixing clamp, and side push blocks are symmetrically and slidably installed on both sides of the push rod movable groove, and a pressure sensing device 2 is fixedly installed on one side surface of the side push block, and an extrusion pad is provided on the outer side of the pressure sensing device 2, and a spring support sleeve is fixedly installed on the side surface of the extrusion pad, and one end of the spring support sleeve is fixedly connected to the inner surface of the workpiece fixing clamp.

[0012] Preferably, a conical push rod is slidably mounted inside the push rod movable groove, a special-shaped extrusion pad is fixedly mounted on one end of the conical push rod, and a wedge block adapted to the conical push rod is fixedly mounted on the other side surface of the side push block.

[0013] Preferably, workpiece side fixing clamps are symmetrically arranged on both sides of the special-shaped extrusion pad, and the workpiece side fixing clamps are rotatably installed on the inner side of the workpiece fixing clamp, a spring pull rod is movably installed between the outer surface of the workpiece side fixing clamp and the inner surface of the workpiece fixing clamp, a movable clamp plate is hingedly installed on the inner wall of the workpiece side fixing clamp, and an elastic gasket is fixedly installed between the outer surface of the movable clamp plate and the inner surface of the workpiece side fixing clamp.

[0014] Preferably, the deflection correction plate is fixedly mounted on the middle part of the side surface of the movable seat by bolts, a pin fixing seat is fixedly mounted on the middle part of the side surface of the deflection correction plate, a pin is fixedly mounted on one end of the pin fixing seat, and a centering correction claw is symmetrically hingedly mounted on the side wall of the pin fixing seat.

[0015] Preferably, a telescopic rod is fixedly installed on one side of the interior of the deflection correction disk, a pushing bevel block is fixedly installed on the output end of the telescopic rod, a movable wedge block is slidably installed on the inner middle part of the movable seat, a limiting spring rod is fixedly installed between the inner wall of one end of the movable wedge block and the inner surface of the deflection correction disk, and the outer surface of the other end of the movable wedge block is in contact with the inner surface of the centering correction claw.

[0016] Compared with the prior art, the present invention has the following beneficial effects: The present invention carries an X-axis moving pre-tightening component on the Y-axis moving component, so that the mobile worktable 1 moves and then drives the mobile worktable 2 to translate in the X-axis direction of the machine tool. The pressure sensing device 1 will feed back the actual X-direction force value data until it matches the system preset force value. At this time, the system sends a command to brake and clamp the X-axis servo motor, so that the turntable has a constant pre-tightening force on the workpiece. At the same time, a workpiece fixing correction component is carried on the output end of the turntable to assist in clamping the workpiece and automatically correct the deflection of the workpiece. It can be applicable to the processing of various workpieces, prevent workpiece deformation, improve processing stability and accuracy, and solve the problem in the prior art that CNC processing equipment cannot automatically pre-tighten the workpiece when clamping it. BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 It is a schematic diagram of the overall structure of the multi-axis CNC machining equipment of the present invention; Figure 2 It is a schematic diagram of the overall side structure of the multi-axis CNC machining equipment of the present invention; Figure 3 For the present invention Figure 2 A schematic diagram of the enlarged structure at point A; Figure 4 It is a schematic diagram of the overall structure of the X-axis movable pre-tightening component of the present invention; Figure 5 This is a schematic diagram of the overall disassembly structure of the X-axis movable pre-tightening component of the present invention; Figure 6 This is a schematic diagram of the structure of the turntable and the workpiece fixing and correction component of the present invention after the workpiece is installed; Figure 7 It is a schematic diagram of the overall structure of the turntable and the workpiece fixing and correction component of the present invention; Figure 8 It is a schematic diagram of the overall structure of the workpiece fixing and correction component of the present invention; Fig. 9 This is a schematic diagram of the overall disassembled structure of the workpiece fixing and correction component of the present invention; Fig.10 It is a schematic diagram of the internal structure of the workpiece fixing clamp of the present invention in a state of clamping a workpiece; Fig.11 For the present invention Figure 7 The enlarged structural diagram at B; Fig.12 It is a schematic diagram of the internal structure of the deflection correction disk of the present invention; Fig.13 It is a schematic diagram of the structure of the deflection correction disk of the present invention after correction; Fig.14 It is a schematic diagram of the structure of the deflection correction disk of the present invention before correction.

[0017] In the figure: 1. Multi-axis CNC machining equipment; 2. Z-axis machining parts; 3. Y-axis moving parts; 4. X-axis moving preload parts; 41. X-axis preload shaft mounting frame; 411. Limiting slide rail; 42. Fixed workbench; 43. Mobile workbench 1; 431. Threaded sleeve; 432. Pushing and extruding sleeve; 44. Mobile workbench 2; 441. Pressure sensing device mounting plate; 442. Pressure sensing device 1; 45. Turntable; 46. X-axis servo motor; 47. X-axis preload screw; 5. Workpiece fixing and correction parts; 51. Workpiece fixing table; 52. Movable seat; 521. Two-way telescopic rod; 522. Movable block; 523, workpiece fixing clamp; 5231, push rod movable groove; 5232, spring support sleeve; 5233, extrusion pad; 5234, side push block; 5235, pressure sensing device II; 524, special-shaped extrusion pad; 5241, conical push rod; 525, workpiece side fixing clamp; 5251, spring pull rod; 5252, movable splint; 5253, elastic gasket; 53, deflection correction disk; 531, ejector pin fixing seat; 5311, centering correction claw; 532, ejector pin; 533, telescopic rod; 534, push inclined block; 535, movable wedge block; 5351, limit spring rod. DETAILED DESCRIPTION

[0018] In order to make the purpose and technical solution of the present invention clearly and completely described, and the advantages more clearly understood, the embodiments of the present invention are further described in detail with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are part of the embodiments of the present invention, rather than all of the embodiments, and are only used to explain the embodiments of the present invention, and are not used to limit the embodiments of the present invention. All other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019] For example, see Figure 1 - Fig.14The present invention provides a technical solution: a multi-axis CNC machining device with a preload function, comprising a multi-axis CNC machining device 1, a Z-axis machining component 2 is arranged above the multi-axis CNC machining device 1, a Y-axis moving component 3 is arranged in front of the multi-axis CNC machining device 1, an X-axis moving preload component 4 is arranged above the Y-axis moving component 3, and the X-axis moving preload component 4 includes an X-preload axis mounting frame 41, a fixed workbench 42, a moving workbench 1 43 and a moving workbench 2 44, and the fixed workbench 42 and the moving workbench 2 44 are arranged above A turntable 45 is fixedly installed on each of the two axes. A workpiece fixing correction component 5 is arranged on one side of the output shaft of the turntable 45. The workpiece fixing correction component 5 includes a workpiece fixing table 51, a movable seat 52 and a deflection correction disk 53. The bottom of the X-preload shaft mounting frame 41 is fixedly connected to the top of the sliding component of the Y-axis moving component 3 by bolts. The fixed worktable 42 is fixedly installed on one side of the upper surface of the X-preload shaft mounting frame 41 by bolts. The movable worktable 43 is slidably installed on the other side of the upper surface of the X-preload shaft mounting frame 41. The upper surface of the X-preload shaft mounting frame 41 is fixed A limiting slide rail 411 adapted to the mobile workbench 1 43 is installed, the mobile workbench 2 44 is arranged above the mobile workbench 1 43, a threaded sleeve 431 is fixedly installed on the lower surface of the mobile workbench 1 43, a pushing and extruding sleeve 432 is fixedly installed on the upper surface of the mobile workbench 1 43, a limiting slide groove adapted to the pushing and extruding sleeve 432 is arranged on the upper surface of the mobile workbench 2 44, a pressure sensing device mounting plate 441 is fixedly installed inside the slide groove of the mobile workbench 2 44, and the middle part of the pressure sensing device mounting plate 441 is fixedly fixed by bolts. A pressure sensing device 442 is fixedly installed, a side wall of the push-extrusion sleeve 432 is provided with a slide groove adapted to the pressure sensing device mounting plate 441, the push-extrusion sleeve 432 is arranged outside the pressure sensing device 442, an X-axis preload screw 47 is rotatably installed inside the X-axis preload shaft mounting frame 41, an X-axis servo motor 46 for driving the X-axis preload screw 47 to rotate is fixedly installed inside the X-axis preload shaft mounting frame 41 on one side close to the fixed workbench 42, and the inside of the threaded sleeve 431 is connected to the outer surface of the X-axis preload screw 47 through a threaded connection;In this embodiment, the multi-axis CNC machining equipment 1 moves the parts through the Y-axis moving part 3 and the X-axis moving preload part 4, and processes the workpiece through the Z-axis machining part 2, so as to realize the multi-axis moving machining of the parts. The X-preload shaft mounting frame 41 mainly serves to connect and fix the sliding part of the Y-axis moving part 3 so that the X-preload shaft mounting frame 41 can move along the Y-axis. The sliding part of the Y-axis moving part 3 mainly includes a screw rod and a sliding platform. At the same time, the X-preload shaft mounting frame 41 also serves to install the fixed workbench 42 and the moving workbench. The function of 43 is that the turntable 45 installed above the fixed workbench 42 and the movable workbench 2 44 realizes the clamping and fixing of the workpiece through the auxiliary cooperation of the workpiece fixing and correction component 5, and drives the workpiece to rotate. The workpiece is grabbed and placed between the two sets of workpiece fixing and correction components 5 by manual or mechanical devices, and the X-axis servo motor 46 is set on the operation panel of the multi-axis CNC machining equipment 1 to drive the X-axis preload screw 47 to rotate, so that the movable workbench 1 43 moves under the cooperation of the limit slide rail 411, thereby driving the movable workbench 2 44 to The machine tool translates in the X-axis direction, so that the turntable 45 pre-presses or pre-tensions the workpiece, and cooperates with the workpiece fixing and correction component 5 to complete the installation of the workpiece. The specific way to pre-tighten the workpiece in the X-axis is that when the mobile worktable 1 43 drives the mobile worktable 2 44 to move, the side wall of the extrusion sleeve 432 is pushed to produce an extrusion effect with the pressure sensing device 1 442. When the turntable 45 generates pressure on the workpiece in the X direction, the pressure sensing device 1 442 will transmit the actual X-direction force value data to the control system of the multi-axis CNC machining equipment 1, and compare it with the set force value. The system calculates the force value difference and drives the X-axis pre-tightening screw 47 through the X-axis servo motor 46 to cooperate with the pulling of the mobile worktable 1 43 to move until the actual X-direction force value data is adjusted to match the system preset force value. At this time, the system sends a command to brake and clamp the X-axis servo motor 46, so that the turntable 45 has a constant pre-tightening force on the workpiece, and then starts to process the workpiece under the constant pre-tightening force. Under the action of a certain pre-tightening force, the workpiece is not easy to deform, the dimensional accuracy will be more stable, and the machining accuracy is improved. ;

[0020] Embodiment 2: On the basis of embodiment 1, a workpiece fixing table 51 is fixedly mounted on one end of the output shaft of the turntable 45, a movable seat 52 is fixedly mounted on the middle of the side surface of the workpiece fixing table 51, movable blocks 522 are symmetrically slidably mounted on both sides of the inside of the movable seat 52, a two-way telescopic rod 521 is fixedly mounted on the middle of the inside of the movable seat 52, the output ends of the two-way telescopic rod 521 are respectively fixedly connected to the inner surface of the movable block 522, a workpiece fixing clamp 523 is fixedly mounted on the outer surface of the movable block 522 by bolts, a push rod movable groove 5231 is provided in the middle of one end of the workpiece fixing clamp 523, side push blocks 5234 are symmetrically slidably mounted on both sides of the push rod movable groove 5231, a pressure sensing device 2 5235 is fixedly mounted on one side surface of the side push block 5234, a compression pad 5233 is provided on the outer side of the pressure sensing device 2 5235, and a side surface of the compression pad 5233 is fixedly mounted The spring support sleeve 5232 has one end fixedly connected to the inner surface of the workpiece fixing clamp 523, a conical push rod 5241 is slidably installed inside the push rod movable groove 5231, a special-shaped extrusion pad 524 is fixedly installed on one end of the conical push rod 5241, a wedge block matched with the conical push rod 5241 is fixedly installed on the other side surface of the side push block 5234, workpiece side fixing clamps 525 are symmetrically arranged on both sides of the special-shaped extrusion pad 524, the workpiece side fixing clamp 525 is rotatably installed on the inner side of the workpiece fixing clamp 523, a spring pull rod 5251 is movably installed between the outer surface of the workpiece side fixing clamp 525 and the inner surface of the workpiece fixing clamp 523, a movable clamp plate 5252 is hingedly installed on the inner side wall of the workpiece side fixing clamp 525, and an elastic gasket 5253 is fixedly installed between the outer surface of the movable clamp plate 5252 and the inner surface of the workpiece side fixing clamp 525;The workpiece fixing platform 51 is fixed to the output shaft of the turntable 45. As the turntable 45 rotates, when the workpiece is placed between the workpiece fixing platform 51, the two-way telescopic rod 521 contracts inwardly to drive the movable block 522 to move inwardly, and the workpiece fixing clamp 523 clamps the workpiece so that the workpiece can be driven by the turntable 45 to rotate. The specific clamping process of the workpiece fixing clamp 523 is that the workpiece fixing clamp 523 moves inwardly, so that the special-shaped extrusion pad 524 contacts the workpiece and is squeezed, so that the conical ejector rod 5241 moves inwardly toward the ejector rod movable groove 5231 and is ejected. At this time, the side push block 5234 is pushed outward by the conical ejector rod 5241 to generate an extrusion force between the extrusion pad 5233, and the spring support sleeve 5232 mainly plays a role in pushing the extrusion pad 5233 so that the pressure sensing device 2 5235 can obtain a specific value. In this way, when the workpiece rotates with the turntable 45, the deflection force error generated on both sides due to rotation can be detected by the pressure sensing device 2 on both sides The difference between 5235 is obtained and fed back, which is convenient for correcting the deflection force error in the later stage, so that the workpiece can overcome the deflection error and improve the accuracy of workpiece processing. In addition, as the conical push rod 5241 pushes the side push block 5234, the side push block 5234 will squeeze one end of the workpiece side fixing clamp 525, so that the workpiece side fixing clamp 525 is deflected and the two sides of the workpiece are further clamped. The spring pull rod 5251 mainly pulls one end of the workpiece side fixing clamp 525 to open when the workpiece side fixing clamp 525 is not squeezed, which is convenient for clamping the workpiece. It is particularly noted that the movable clamp 5252 can be adaptively adjusted according to the curvature of the workpiece surface under the extrusion cooperation of the elastic gasket 5253, and when the workpiece is clamped in place, one end of the special-shaped extrusion pad 524 can squeeze one end of the movable clamp 5252 so that the lower end of the movable clamp 5252 has an inward tightening force on the workpiece, making the workpiece installation more stable. ;

[0021] Embodiment 3, on the basis of embodiment 2, the deflection correction disk 53 is fixedly installed on the middle part of the side surface of the movable seat 52 by bolts, a pin fixing seat 531 is fixedly installed on the middle part of the side surface of the deflection correction disk 53, a pin 532 is fixedly installed on one end of the pin fixing seat 531, a centering correction claw 5311 is symmetrically hingedly installed on the side wall of the pin fixing seat 531, a telescopic rod 533 is fixedly installed on one side of the inner part of the deflection correction disk 53, a pushing inclined block 534 is fixedly installed on the output end of the telescopic rod 533, a movable wedge block 535 is slidably installed on the inner middle part of the movable seat 52, a limiting spring rod 5351 is fixedly installed between the inner wall of one end of the movable wedge block 535 and the inner surface of the deflection correction disk 53, and the outer surface of the other end of the movable wedge block 535 is fixedly fixed on the centering correction claw 531 1; in the present embodiment, according to the second embodiment, when the workpiece rotates with the turntable 45, the deflection force error generated on both sides due to the rotation can be obtained by the difference between the pressure sensing devices 5235 on both sides and feedback is performed, and the telescopic rod 533 inside the deflection correction disk 53 works to push the inclined block 534 to move inward to squeeze the movable wedge block 535, so that the movable wedge block 535 moves into the inside of the ejector pin fixing seat 531 to squeeze the inner side of the centering correction claw 5311, so that the centering correction claw 5311 is synchronously concentrated inwardly, and the outer wall of one end of the workpiece is centered and corrected to eliminate the deflection error caused by the rotation. The ejector pin 532 mainly provides axial support to the workpiece after the workpiece is installed, which can reduce the axial vibration of the workpiece during rotation and improve the processing stability.

[0022] Embodiment 4. On the basis of embodiment 3, this embodiment further proposes a pre-tightening method for multi-axis CNC machining equipment with a pre-tightening force function, comprising the following steps: step 1, clamping the workpiece, grabbing the workpiece by manual or mechanical means and placing it between two sets of workpiece fixing and correction components 5, setting the X-axis servo motor 46 to work on the operation panel of the multi-axis CNC machining equipment 1 to drive the X-axis pre-tightening screw 47 to rotate, so that the movable worktable 1 43 moves under the cooperation of the limiting slide rail 411, and then drives the movable worktable 2 44 to translate in the X-axis direction of the machine tool, thereby realizing the pre-pressing or pre-tensioning of the workpiece by the turntable 45, the inward contraction of the bidirectional telescopic rod 521 drives the movable block 522 to move inward, and the workpiece fixing clamp 523 clamps the workpiece; step 2, performing X-axis pre-tightening adjustment, when the turntable 45 generates pressure on the workpiece in the X direction, the pressure sensing device transmits the actual X-direction force value data to the control system of the multi-axis CNC machining equipment 1. , and compared with the set force value, the system calculates the force value difference and drives the X-axis preload screw 47 through the X-axis servo motor 46 to cooperate with the mobile workbench 1 43 to move, until the actual X-direction force value data is adjusted to match the system preset force value, at this time the system sends a command to brake and clamp the X-axis servo motor 46, so that the turntable 45 has a constant preload force on the workpiece, and then the workpiece can be processed; step three, deflection correction is performed, when the workpiece rotates with the turntable 45, the deflection force error generated on both sides due to rotation can be obtained by the difference between the pressure sensing devices 2 5235 on both sides and feedback is performed, the telescopic rod 533 inside the deflection correction disk 53 works to push the inclined block 534 to move inward to squeeze the movable wedge block 535, so that the movable wedge block 535 moves into the inside of the ejector fixing seat 531 to squeeze the inner side of the centering correction claw 5311, so that the centering correction claw 5311 is synchronously concentrated inward, the outer wall of the workpiece is centered and corrected, and the deflection error is eliminated.

[0023] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A multi-axis CNC machining device with a preload function, comprising a multi-axis CNC machining device (1), a Z-axis machining component (2) being arranged above the multi-axis CNC machining device (1), and a Y-axis moving component (3) being arranged in front of the multi-axis CNC machining device (1), characterized in that: An X-axis moving preload component (4) is arranged above the Y-axis moving component (3), and the X-axis moving preload component (4) comprises an X-preload axis mounting frame (41), a fixed worktable (42), a first moving worktable (43) and a second moving worktable (44), and a turntable (45) is fixedly installed above both the fixed worktable (42) and the second moving worktable (44), and a workpiece fixing correction component (5) is arranged on one side of an output shaft of the turntable (45), and the workpiece fixing correction component (5) comprises a workpiece fixing table (51), a movable seat (52) and a deflection correction disk (53).

2. The multi-axis CNC machining equipment with preload function according to claim 1, characterized in that: The bottom of the X-preload shaft mounting frame (41) is fixedly connected to the top of the sliding component of the Y-axis moving component (3) by bolts, the fixed workbench (42) is fixedly mounted on one side of the upper surface of the X-preload shaft mounting frame (41) by bolts, the movable workbench 1 (43) is slidably mounted on the other side of the upper surface of the X-preload shaft mounting frame (41), and a limiting slide rail (411) adapted to the movable workbench 1 (43) is fixedly mounted on the upper surface of the X-preload shaft mounting frame (41).

3. The multi-axis CNC machining equipment with preload function according to claim 1, characterized in that: The movable workbench 2 (44) is arranged above the movable workbench 1 (43); a threaded sleeve (431) is fixedly installed on the lower surface of the movable workbench 1 (43); a pushing and extruding sleeve (432) is fixedly installed on the upper surface of the movable workbench 1 (43); a limiting slide groove matching the pushing and extruding sleeve (432) is arranged on the upper surface of the movable workbench 2 (44); a pressure sensing device mounting plate (441) is fixedly installed inside the slide groove of the movable workbench 2 (44); a pressure sensing device 1 (442) is fixedly installed on the middle part of the pressure sensing device mounting plate (441) by bolts; a slide groove matching the pressure sensing device mounting plate (441) is arranged on the side wall of the pushing and extruding sleeve (432); and the pushing and extruding sleeve (432) is arranged outside the pressure sensing device 1 (442).

4. The multi-axis CNC machining equipment with preload function according to claim 3, characterized in that: An X-axis preload screw (47) is rotatably mounted inside the X-axis preload shaft mounting frame (41), and an X-axis servo motor (46) for driving the X-axis preload screw (47) to rotate is fixedly mounted inside a side of the X-axis preload shaft mounting frame (41) close to the fixed workbench (42), and the interior of the threaded sleeve (431) is connected to the outer surface of the X-axis preload screw (47) via threads.

5. The multi-axis CNC machining equipment with preload function according to claim 1, characterized in that: The workpiece fixing table (51) is fixedly mounted on one end of the output shaft of the turntable (45); the movable seat (52) is fixedly mounted on the middle part of the side surface of the workpiece fixing table (51); movable blocks (522) are symmetrically slidably mounted on both sides of the inside of the movable seat (52); a bidirectional telescopic rod (521) is fixedly mounted on the middle part of the inside of the movable seat (52); the output ends of the bidirectional telescopic rod (521) are respectively fixedly connected to the inner surface of the movable block (522); and a workpiece fixing clamp (523) is fixedly mounted on the outer surface of the movable block (522) by bolts.

6. The multi-axis CNC machining equipment with preload function according to claim 5, characterized in that: A push rod movable groove (5231) is provided in the middle of one end of the workpiece fixing clamp (523), and side push blocks (5234) are symmetrically slidably installed on both sides of the push rod movable groove (5231), and a second pressure sensing device (5235) is fixedly installed on one side surface of the side push block (5234), and an extrusion pad (5233) is provided on the outer side of the second pressure sensing device (5235), and a spring support sleeve (5232) is fixedly installed on the side surface of the extrusion pad (5233), and one end of the spring support sleeve (5232) is fixedly connected to the inner surface of the workpiece fixing clamp (523).

7. The multi-axis CNC machining equipment with preload function according to claim 6, characterized in that: A conical push rod (5241) is slidably mounted inside the push rod movable groove (5231), a special-shaped extrusion pad (524) is fixedly mounted on one end of the conical push rod (5241), and a wedge block matching the conical push rod (5241) is fixedly mounted on the other side surface of the side push block (5234).

8. The multi-axis CNC machining equipment with preload function according to claim 7, characterized in that: Workpiece side fixing clamps (525) are symmetrically arranged on both sides of the special-shaped extrusion pad (524); the workpiece side fixing clamps (525) are rotatably mounted on the inner side of the workpiece fixing clamp (523); a spring pull rod (5251) is movably mounted between the outer surface of the workpiece side fixing clamp (525) and the inner surface of the workpiece fixing clamp (523); a movable clamp plate (5252) is hingedly mounted on the inner side wall of the workpiece side fixing clamp (525); and an elastic gasket (5253) is fixedly mounted between the outer surface of the movable clamp plate (5252) and the inner surface of the workpiece side fixing clamp (525).

9. The multi-axis CNC machining equipment with preload function according to claim 1, characterized in that: The deflection correction plate (53) is fixedly mounted on the middle part of the side surface of the movable seat (52) by means of bolts, a pin fixing seat (531) is fixedly mounted on the middle part of the side surface of the deflection correction plate (53), a pin (532) is fixedly mounted on one end of the pin fixing seat (531), and a centering correction claw (5311) is symmetrically hingedly mounted on the side wall of the pin fixing seat (531).

10. The multi-axis CNC machining equipment with preload function according to claim 1, characterized in that: A telescopic rod (533) is fixedly mounted on one side of the interior of the deflection correction disk (53), a pushing inclined block (534) is fixedly mounted on the output end of the telescopic rod (533), a movable wedge block (535) is slidably mounted in the middle of the interior of the movable seat (52), a limiting spring rod (5351) is fixedly mounted between the inner wall of one end of the movable wedge block (535) and the inner surface of the deflection correction disk (53), and the outer surface of the other end of the movable wedge block (535) is in contact with the inner surface of the centering correction claw (5311).

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