CN117921204A - Metal cutting machine with feeding mechanism - Google Patents

Abstract

The invention relates to the technical field of cutting equipment, in particular to a metal cutting machine with a feeding mechanism, which comprises a workbench, wherein sliding rails are arranged on two sides of the workbench in parallel, a supporting frame is arranged on the sliding rails in a sliding manner, and a laser cutting machine is arranged on the supporting frame; a feeding mechanism for controlling the support frame to move along the horizontal direction is arranged on the outer side of the sliding rail; a material table is slidably arranged between the two sliding rails, and a locking mechanism is arranged between the material table and the workbench; the upper side of the material table is provided with a fixing mechanism for clamping and fixing the plate. The laser cutting machine and the workbench can be controlled to move, plates in multiple groups of shapes can be cut, and the occupied area of the cutting machine is smaller.

Description

Metal cutting machine with feeding mechanism

Technical Field

The invention relates to the technical field of cutting equipment, in particular to a metal cutting machine with a feeding mechanism.

Background technique

In the process of processing and production, metal cutting machines are often used to cut the plates and cut them into suitable sizes. In the metal cutting machines of the prior art, the plates or cutting devices are fixed during the cutting process, and the cutting devices or plates are moved separately for cutting. This method can only achieve a single form of plate cutting during cutting. And the cutting equipment occupies a large area.

Summary of the invention

1. Technical issues to be solved

In view of the deficiencies in the prior art, the present invention provides a metal cutting machine with a feeding mechanism, which can control the movement of a laser cutting machine and a workbench, can cut plates of multiple shapes, and the cutting machine occupies a smaller area.

(II) Technical solution

To achieve the above-mentioned purpose, an embodiment of the present application provides a metal cutting machine with a feeding mechanism, including a workbench, slide rails are arranged in parallel on both sides of the workbench, a support frame is slidably arranged on the slide rails, and a laser cutting machine is installed on the support frame; a feeding mechanism for controlling the horizontal movement of the support frame is arranged on the outer side of the slide rails; a material table is slidably arranged between the two slide rails, and a locking mechanism is arranged between the material table and the workbench; a fixing mechanism for clamping and fixing the plate is arranged on the upper side of the material table.

Preferably, the two groups of slide rails are on a side away from each other, and mounting blocks are fixedly provided at both ends of the slide rails, the feeding mechanism includes a driving screw rod rotatably connected between the two mounting blocks, the driving screw rod includes a first screw rod and a second screw rod, the first screw rod and the second screw rod are respectively located on both sides of the two groups of slide rails, and are respectively parallel to the slide rails; a first sprocket is fixedly installed at one end of the first screw rod, and a second sprocket is fixedly installed at one end of the second screw rod, the first sprocket and the second sprocket are located at the same end of the slide rail and are connected by a chain; a first driving motor is provided at an end of the first screw rod or the second screw rod away from the chain; the support frame includes a sliding block slidably connected to the slide rail and a gantry mounted on the upper side of the sliding block; a first threaded hole is opened on the two sliding blocks, the first screw rod and the second screw rod respectively pass through the first threaded hole, and are threadedly connected to the first threaded hole.

Preferably, the horizontal end of the gantry is provided with a longitudinal adjustment component that slides along the length direction of the vertical slide rail; the movable end of the longitudinal adjustment component is connected to the laser cutting machine.

Preferably, a mounting groove is provided at the horizontal end of the gantry along the length direction, and the longitudinal adjustment component includes an adjusting screw, which is rotatably connected to the mounting groove; a sliding frame is sleeved on the horizontal end of the gantry, and the laser cutting machine is hoisted on the lower side of the sliding block; a driving block is integrally formed on the inner side of the sliding frame and on a side surface close to the mounting groove, and a second threaded hole is provided at the center position of the driving block, and the adjusting screw passes through the second threaded hole and is threadedly connected to the second threaded hole; a second driving motor is fixedly installed on the upper side of the gantry, and the output shaft of the second driving motor is connected to one end of the adjusting screw.

Preferably, a material baffle plate with an L-shaped cross-section is integrally formed on one side of the slide rail close to the material table, a guide groove is formed between the material baffle plate and the slide rail, a guide column is fixedly arranged in the guide groove along the length direction, and a guide block is slidably connected to the guide column; two groups of guide rods are fixedly arranged on both sides of the material table close to the slide rail, and the end of the guide rod away from the material table is fixedly connected to the guide block.

Preferably, the fixing mechanism is arranged in two groups on the material platform at intervals; the material platform is provided with a first sliding groove and a second sliding groove on both sides parallel to the guide rail, the first sliding groove and the second sliding groove are symmetrically arranged and are not connected to each other; the first sliding groove and the second sliding groove penetrate the material platform in the vertical direction, and the length direction of the sliding groove is perpendicular to the length direction of the guide rail; the fixing mechanism includes a first positioning block slidably connected to the first sliding groove, and a second positioning block slidably connected to the second sliding groove; a side surface of the first positioning block close to the second positioning block is integrally formed with a first positioning sleeve, and a side of the second positioning block close to the first positioning block is slidably connected to a second positioning sleeve, and the first positioning sleeve and the second positioning sleeve are arranged relatively to each other; the A bidirectional screw is rotatably connected between the first positioning sleeve and the second positioning sleeve, and the two ends of the bidirectional screw are respectively threadedly connected to the first positioning sleeve and the second positioning sleeve; a third drive motor is fixedly installed on the lower side of the material table, and the third drive motor drives the bidirectional screw to rotate; limiting slots are provided on the vertical side walls in the first sliding groove and the second sliding groove; limiting blocks are provided on both sides of the first positioning block and the second positioning block, and the limiting blocks are slidably connected in the limiting slots, and the upper sides of the first positioning block and the second positioning block are respectively flush with the side surfaces of the material table; a control cylinder is fixedly installed on the lower sides of the first positioning block and the second positioning block, and the piston end of the control cylinder passes through the first positioning hole or the second positioning block, and a splint is fixedly installed on the piston end.

Preferably, the locking mechanism includes a first positioning plate fixed to the lower side of the material table, and a first locking block is fixedly arranged on the lower side of the first positioning plate in an array parallel to the length direction of the slide rail. A first V-shaped block with a V-shaped cross-section is integrally formed at one end of the first locking block away from the first positioning plate, and a locking groove is formed between adjacent first locking blocks; an installation cavity is provided on the side of the workbench close to the material table, and the installation cavity is located directly below the first positioning plate; a fixed block is slidably arranged in the installation cavity, and a lifting cylinder for controlling the movement of the fixed block in the vertical direction is provided in the installation cavity; a borrowing groove is provided on the upper side of the fixed block, and the borrowing groove The length direction of the positioning groove is parallel to the length direction of the first positioning plate; a second positioning plate is arranged to slide horizontally in the positioning groove, a second locking block is fixedly installed on the upper side of the second positioning plate, and a second V-shaped plate is integrally formed on the end of the second locking block away from the second positioning plate, and when the lifting cylinder controls the fixed block to move in the vertical direction, the second locking block can enter the locking groove; a positioning cavity is opened on the fixed block, the positioning cavity is connected with the positioning groove, and a docking interface is formed at the connected position, and the docking interface is located on one side of the length direction of the positioning groove; a clamping assembly is arranged in the positioning cavity, and the clamping assembly passes through the docking interface to clamp the second positioning plate.

Preferably, the clamping assembly includes a clamping cylinder fixed in the positioning cavity, the piston end of the clamping cylinder is connected to a clamping plate, and wear-resistant patterns are formed on a side of the clamping plate close to the second positioning plate and a side of the second positioning plate close to the docking port.

(III) Beneficial effects

The present invention provides a metal cutting machine with a feeding mechanism. Through a slide rail arranged on a workbench, the laser cutting machine can be controlled to move along a horizontal plane through the feeding mechanism and a longitudinal adjustment component. At the same time, during cutting, the position of the material table can be adjusted. After the adjustment is completed, the material table can be locked so that the material table remains fixed during the cutting process. At the same time, the plate on the upper side of the material table can be clamped and fixed by the set fixing mechanism. The device can control the movement of the laser cutting machine and the workbench, can cut plates of multiple shapes, and the cutting machine occupies a smaller area.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a schematic structural diagram of a metal cutting machine with a feeding mechanism according to the present invention;

FIG2 is a top view of a metal cutting machine with a feeding mechanism according to the present invention;

FIG3 is a partial cross-sectional view of a metal cutting machine having a feeding mechanism according to the present invention;

FIG4 is a cross-sectional view of a protruding sliding frame in a metal cutting machine having a feeding mechanism according to the present invention;

FIG5 is a cross-sectional view of a protruding fixing mechanism in a metal cutting machine having a feeding mechanism according to the present invention;

FIG6 is a cross-sectional view of a protruding locking mechanism in a metal cutting machine having a feeding mechanism according to the present invention;

7 is a cross-sectional view of a protruding clamping assembly in a metal cutting machine with a feeding mechanism according to the present invention.

Markings in the accompanying drawings:

100, workbench; 110, mounting cavity; 200, slide rail; 210, mounting block; 220, material baffle; 221, guide groove; 222, guide column; 223, guide block; 300, support frame; 310, sliding block; 311, first threaded hole; 320, gantry; 321, mounting groove; 330, longitudinal adjustment component; 331, adjustment screw rod; 332, sliding frame; 333, drive block; 3331, second threaded hole; 334, second drive motor; 400, laser cutting machine; 500, feeding mechanism; 510, first screw rod; 520, second screw rod; 530, first sprocket; 540, second sprocket; 550, chain; 560, first drive motor; 600, material table; 610, guide rod; 620, first slide The movable groove; 630, the second sliding groove; 640, the limiting groove; 700, the locking mechanism; 710, the first positioning plate; 720, the first locking block; 721, the first V-shaped block; 722, the locking groove; 730, the fixed block; 731, the borrowing groove; 732, the positioning cavity; 733, the docking port; 740, the lifting cylinder; 750, the second positioning plate; 760, the second locking block; 770, the second V-shaped plate; 780, the clamping assembly; 781, the clamping cylinder; 782, the clamping plate; 800, the fixing mechanism; 810, the first positioning block; 820, the second positioning block; 821, the limiting block; 830, the first positioning sleeve; 840, the second positioning sleeve; 850, the bidirectional screw; 860, the third driving motor; 870, the control cylinder; 880, the clamping plate.

Detailed ways

The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on 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.

Example

The present invention provides a metal cutting machine with a feeding mechanism, referring to Fig. 1 to Fig. 7, comprising a workbench 100, slide rails 200 are arranged in parallel on both sides of the workbench 100, a support frame 300 is slidably arranged on the slide rails 200, and a laser cutting machine 400 is installed on the support frame 300; a feeding mechanism 500 for controlling the horizontal movement of the support frame 300 is arranged outside the slide rails 200; a material table 600 is slidably arranged between the two slide rails 200, and a locking mechanism 700 is arranged between the material table 600 and the workbench 100; a fixing mechanism 800 for clamping and fixing a plate is arranged on the upper side of the material table 600. When in use, the plate is clamped and fixed by the material table 600 and the fixing mechanism 800. The laser cutting machine 400 is controlled to move by the feeding mechanism 500, and the plate is cut during the movement.

Mounting blocks 210 are fixedly disposed on the sides of the two sets of slide rails 200 that are away from each other and at both ends of the slide rails 200 .

The feeding mechanism 500 includes a driving screw rod rotatably connected between the two mounting blocks 210, and the driving screw rod includes a first screw rod 510 and a second screw rod 520. The first screw rod 510 and the second screw rod 520 are respectively located on both sides of the two sets of slide rails 200 and are respectively parallel to the slide rails 200; a first sprocket 530 is fixedly installed at one end of the first screw rod 510, and a second sprocket 540 is fixedly installed at one end of the second screw rod 520. The first sprocket 530 and the second sprocket 540 are located at the same end of the slide rail 200 and are connected by a chain 550; a first driving motor 560 is arranged at one end of the first screw rod 510 or the second screw rod 520 away from the chain 550; the first driving motor 560 drives the first screw rod 510 or the second screw rod 520 to rotate, and through the connection of the chain 550, the first screw rod 510 and the second screw rod 520 are controlled to rotate synchronously.

The support frame 300 includes a sliding block 310 slidably connected to the slide rail 200 and a gantry frame 320 installed on the upper side of the sliding block 310; the two sliding blocks 310 are provided with a first threaded hole 311, and the first screw rod 510 and the second screw rod 520 respectively pass through the first threaded hole 311 and are threadedly connected to the first threaded hole 311. Therefore, during use, the support frame 300 can be driven to move in the horizontal direction.

The horizontal end of the gantry 320 is provided with a longitudinal adjustment component 330 that slides along the length direction of the vertical slide rail 200 ; the movable end of the longitudinal adjustment component 330 is connected to the laser cutting machine 400 .

The horizontal end of the gantry 320 is provided with a mounting groove 321 along the length direction, and the longitudinal adjustment assembly 330 includes an adjusting screw rod 331, which is rotatably connected in the mounting groove 321. The horizontal end of the gantry 320 is sleeved with a sliding frame 332, and the laser cutting machine 400 is hoisted on the lower side of the sliding block 310; a driving block 333 is integrally formed on the inner side of the sliding frame 332 and on a side close to the mounting groove 321, and a penetrating second threaded hole 3331 is provided at the center of the driving block 333, and the adjusting screw rod 331 passes through the second threaded hole 3331 and is threadedly connected to the second threaded hole 3331; a second driving motor 334 is fixedly installed on the upper side of the gantry 320, and the output shaft of the second driving motor 334 is connected to one end of the adjusting screw rod 331.

A material baffle plate 220 with an L-shaped cross section is integrally formed on one side of the slide rail 200 close to the material platform 600, a guide groove 221 is formed between the material baffle plate 220 and the slide rail 200, a guide column 222 is fixedly arranged in the guide groove 221 along the length direction, and a guide block 223 is slidably connected to the guide column 222; two groups of guide rods 610 are fixedly arranged on both sides of the material platform 600 close to the slide rail 200, and one end of the guide rod 610 away from the material platform 600 is fixedly connected to the guide block 223. The material platform 600 is supported by the guide column 222. There is a gap between the material platform 600 and the lower workbench 100. After cutting, it is convenient to clean up the debris generated by cutting.

Two groups of fixing mechanisms 800 are arranged at intervals on the material platform 600; a first sliding groove 620 and a second sliding groove 630 are respectively opened on both sides of the parallel guide rail of the material platform 600, and the first sliding groove 620 and the second sliding groove 630 are symmetrically arranged and not connected to each other.

The first sliding groove 620 and the second sliding groove 630 penetrate the material platform 600 in the vertical direction, and the length direction of the sliding groove is perpendicular to the length direction of the guide rail.

The fixing mechanism 800 includes a first positioning block 810 slidably connected to the first sliding groove 620 and a second positioning block 820 slidably connected to the second sliding groove 630 .

A first positioning sleeve 830 is integrally formed on one side of the first positioning block 810 close to the second positioning block 820, and a second positioning sleeve 840 is slidably connected to one side of the second positioning block 820 close to the first positioning block 810, and the first positioning sleeve 830 and the second positioning sleeve 840 are arranged opposite to each other; a bidirectional screw rod 850 is rotatably connected between the first positioning sleeve 830 and the second positioning sleeve 840, and the two ends of the bidirectional screw rod 850 are respectively threadedly connected to the first positioning sleeve 830 and the second positioning sleeve 840; a third drive motor 860 is fixedly installed on the lower side of the material platform 600, and the third drive motor 860 drives the bidirectional screw rod 850 to rotate; wherein, the third drive motor 860 and the bidirectional screw rod 850 can be connected by gears.

Limiting grooves 640 are provided on the vertical side walls of the first sliding groove 620 and the second sliding groove 630; limiting blocks 821 are provided on both sides of the first positioning block 810 and the second positioning block 820, respectively, and the limiting blocks 821 are slidably connected in the limiting grooves 640, and the upper side surfaces of the first positioning block 810 and the second positioning block 820 are respectively flush with the upper side surfaces of the material platform 600.

A control cylinder 870 is fixedly installed on the lower side of the first positioning block 810 and the second positioning block 820. The piston end of the control cylinder 870 passes through the first positioning hole or the second positioning block 820, and a clamping plate 880 is fixedly installed on the piston end.

The locking mechanism 700 includes a first positioning plate 710 fixed to the lower side of the material platform 600, and first locking blocks 720 are fixedly arranged in an array at intervals along the length direction of the parallel slide rail 200 on the lower side of the first positioning plate 710. The first locking block 720 has a first V-shaped block 721 with a V-shaped cross-section integrally formed at one end away from the first positioning plate 710, and locking grooves 722 are formed between adjacent first locking blocks 720.

An installation cavity 110 is provided on one side of the workbench 100 close to the material table 600, and the installation cavity 110 is located directly below the first positioning plate 710; a fixed block 730 is slidably arranged in the installation cavity 110, and a lifting cylinder 740 is arranged in the installation cavity 110 to control the fixed block 730 to move in the vertical direction.

A positioning groove 731 is provided on the upper side of the fixed block 730, and the length direction of the positioning groove 731 is parallel to the length direction of the first positioning plate 710; a second positioning plate 750 is horizontally slidably arranged in the positioning groove 731, and a second locking block 760 is fixedly installed on the upper side of the second positioning plate 750, and a second V-shaped plate 770 is integrally formed at one end of the second locking block 760 away from the second positioning plate 750, and when the lifting cylinder 740 controls the fixed block 730 to move in the vertical direction, the second locking block 760 can enter the locking groove 722. When the lifting cylinder 740 controls the second locking block 760 to rise, since the first locking block 720 and the second locking block 760 are respectively formed with a first V-shaped block 721 and a second V-shaped block on the opposite side, the second locking block 760 can be conveniently inserted into the locking groove 722. Among them, the positioning groove 731 is a T-shaped groove.

A positioning cavity 732 is provided on the fixed block 730. The positioning cavity 732 is connected to the positioning groove 731, and a docking interface 733 is formed at the connected position. The docking interface 733 is located on one side of the length direction of the positioning groove 731. A clamping assembly 780 is provided in the positioning cavity 732. The clamping assembly 780 passes through the docking interface 733 to clamp the second positioning plate.

The clamping assembly 780 includes a clamping cylinder 781 fixed in the positioning cavity 732, and the piston end of the clamping cylinder 781 is connected to a clamping plate 782. The side of the clamping plate 782 close to the second positioning plate and the side of the second positioning plate close to the docking port 733 are both formed with wear-resistant patterns.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", "front", "back" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection, a mechanical connection, an electrical connection, a direct connection, or an indirect connection through an intermediate medium, or the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. In the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

The above-mentioned embodiments only express the implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the patent of the present invention. It should be pointed out that, for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be based on the attached claims.

Claims (8)

1. A metal cutting machine with a feeding mechanism, characterized in that it comprises a workbench (100), slide rails (200) are arranged in parallel on both sides of the workbench (100), a support frame (300) is slidably arranged on the slide rails (200), and a laser cutting machine (400) is installed on the support frame (300); A feeding mechanism (500) for controlling the support frame (300) to move in a horizontal direction is arranged outside the slide rail (200); A material table (600) is slidably arranged between the two slide rails (200), and a locking mechanism (700) is arranged between the material table (600) and the workbench (100); A fixing mechanism (800) for clamping and fixing the plate is arranged on the upper side of the material table (600). 2. A metal cutting machine with a feeding mechanism according to claim 1, characterized in that: the two sets of the slide rails (200) are located on a side away from each other, and mounting blocks (210) are fixedly arranged at both ends of the slide rails (200), The feeding mechanism (500) comprises a driving screw rod rotatably connected between the two mounting blocks (210), the driving screw rod comprising a first screw rod (510) and a second screw rod (520), the first screw rod (510) and the second screw rod (520) being respectively located on both sides of the two sets of slide rails (200) and respectively parallel to the slide rails (200); A first sprocket (530) is fixedly mounted on one end of the first screw rod (510), and a second sprocket (540) is fixedly mounted on one end of the second screw rod (520); the first sprocket (530) and the second sprocket (540) are located at the same end of the slide rail (200) and are connected via a chain (550); A first driving motor (560) is provided at one end of the first screw rod (510) or the second screw rod (520) away from the chain (550); The support frame (300) comprises a sliding block (310) slidably connected to the sliding rail (200) and a gantry (320) installed on the upper side of the sliding block (310); A first threaded hole (311) is provided on each of the two sliding blocks (310), and the first threaded rod (510) and the second threaded rod (520) respectively pass through the first threaded holes (311) and are threadedly connected to the first threaded holes (311). 3. A metal cutting machine with a feeding mechanism according to claim 1, characterized in that: a longitudinal adjustment component (330) sliding along the length direction of the vertical slide rail (200) is provided at the horizontal end of the gantry (320); and a movable end of the longitudinal adjustment component (330) is connected to the laser cutting machine (400). 4. A metal cutting machine with a feeding mechanism according to claim 1, characterized in that: a mounting groove (321) is provided at the horizontal end of the gantry (320) along the length direction, The longitudinal adjustment assembly (330) comprises an adjustment screw rod (331), and the adjustment screw rod (331) is rotatably connected to the installation groove (321); A sliding frame (332) is sleeved on the horizontal end of the gantry (320), and the laser cutting machine (400) is hoisted on the lower side of the sliding block (310); A driving block (333) is integrally formed on a side surface located inside the sliding frame (332) and close to the mounting groove (321); a second threaded hole (3331) is provided at the center of the driving block (333); the adjusting screw rod (331) passes through the second threaded hole (3331) and is threadedly connected to the second threaded hole (3331); A second drive motor (334) is fixedly mounted on the upper side of the gantry (320), and an output shaft of the second drive motor (334) is connected to one end of the adjusting screw rod (331). 5. A metal cutting machine with a feeding mechanism according to claim 1, characterized in that: a material baffle plate (220) with an L-shaped cross section is integrally formed on a side surface of the slide rail (200) close to the material table (600), a guide groove (221) is formed between the material baffle plate (220) and the slide rail (200), a guide column (222) is fixedly arranged in the guide groove (221) along the length direction, and a guide block (223) is slidably connected to the guide column (222); Two groups of guide rods (610) are respectively fixedly arranged on both sides of the material platform (600) close to the slide rail (200), and one end of the guide rod (610) away from the material platform (600) is fixedly connected to the guide block (223). 6. A metal cutting machine with a feeding mechanism according to claim 1, characterized in that: two groups of the fixing mechanisms (800) are arranged at intervals on the material table (600); The material platform (600) is provided with a first sliding groove (620) and a second sliding groove (630) on both sides parallel to the guide rail, respectively; the first sliding groove (620) and the second sliding groove (630) are symmetrically arranged and are not connected to each other; The first sliding groove (620) and the second sliding groove (630) penetrate the material platform (600) in a vertical direction, and the length direction of the sliding groove is perpendicular to the length direction of the guide rail; The fixing mechanism (800) comprises a first positioning block (810) slidably connected to the first sliding groove (620), and a second positioning block (820) slidably connected to the second sliding groove (630); A first positioning sleeve (830) is integrally formed on a side of the first positioning block (810) close to the second positioning block (820), and a second positioning sleeve (840) is slidably connected to a side of the second positioning block (820) close to the first positioning block (810), and the first positioning sleeve (830) and the second positioning sleeve (840) are arranged opposite to each other; A bidirectional screw rod (850) is rotatably connected between the first positioning sleeve (830) and the second positioning sleeve (840), and two ends of the bidirectional screw rod (850) are respectively threadedly connected to the first positioning sleeve (830) and the second positioning sleeve (840); A third drive motor (860) is fixedly mounted on the lower side of the material platform (600), and the third drive motor (860) drives the bidirectional screw rod (850) to rotate; Limiting grooves (640) are provided on the vertical side walls of the first sliding groove (620) and the second sliding groove (630); limiting blocks (821) are provided on both sides of the first positioning block (810) and the second positioning block (820), and the limiting blocks (821) are slidably connected in the limiting grooves (640), so that the upper side surfaces of the first positioning block (810) and the second positioning block (820) are respectively flush with the upper side surfaces of the material platform (600); A control cylinder (870) is fixedly mounted on the lower side of each of the first positioning block (810) and the second positioning block (820); a piston end of the control cylinder (870) passes through the first positioning hole or the second positioning block (820), and a clamping plate (880) is fixedly mounted on the piston end. 7. A metal cutting machine with a feeding mechanism according to claim 1, characterized in that: the locking mechanism (700) comprises a first positioning plate (710) fixed to the lower side of the material table (600), first locking blocks (720) are fixedly arranged in an array at intervals on the lower side of the first positioning plate (710) along a length direction parallel to the slide rail (200), a first V-shaped block (721) with a V-shaped cross section is integrally formed at one end of the first locking block (720) away from the first positioning plate (710), and locking grooves (722) are formed between adjacent first locking blocks (720); A mounting cavity (110) is provided on a side of the workbench (100) close to the material table (600), and the mounting cavity (110) is located directly below the first positioning plate (710); A fixed block (730) is slidably disposed in the installation cavity (110), and a lifting cylinder (740) is disposed in the installation cavity (110) for controlling the fixed block (730) to move in a vertical direction; A positioning groove (731) is provided on the upper side of the fixed block (730), and the length direction of the positioning groove (731) is parallel to the length direction of the first positioning plate (710); A second positioning plate (750) is horizontally slidably arranged in the borrowing groove (731), a second locking block (760) is fixedly installed on the upper side of the second positioning plate (750), and a second V-shaped plate (770) is integrally formed at one end of the second locking block (760) away from the second positioning plate (750), and when the lifting cylinder (740) controls the fixed block (730) to move in the vertical direction, the second locking block (760) can enter the locking groove (722); A positioning cavity (732) is provided on the fixing block (730), the positioning cavity (732) is communicated with the borrowing groove (731), and a docking port (733) is formed at the communicating position, the docking port (733) is located on one side of the borrowing groove (731) in the length direction; A pressing assembly (780) is provided in the positioning cavity (732), and the pressing assembly (780) passes through the docking port (733) to press the second positioning plate (750). 8. A metal cutting machine with a feeding mechanism according to claim 1, characterized in that: the clamping assembly (780) includes a clamping cylinder (781) fixed in the positioning cavity (732), the piston end of the clamping cylinder (781) is connected to a clamping plate (782), and the side of the clamping plate (782) close to the second positioning plate (750) and the side of the second positioning plate (750) close to the docking port (733) are both formed with wear-resistant textures.