Feeding device for numerical control machine tool bar workpiece machining

Abstract

The invention discloses a feeding device for numerical control machine tool bar workpiece machining, and belongs to the technical field of numerical control machining. Batched bar workpieces are placed in a storage box, the bar workpieces can slide in an inclined groove in a supporting base and move out of the storage box, a connecting shaft rotates to drive a plurality of shifting plates to rotate by 90 degrees clockwise, and the shifting plates are moved out of the storage box; at the moment, the bar workpieces on the supporting seat can slide into an arc-shaped groove in the material shifting plate, then the first motor is controlled to rotate reversely, the material shifting plate is made to rotate by 90 degrees anticlockwise so that the bar workpieces can slide into the feeding assembly, the feeding assembly conveys the bar workpieces rightwards to a machining area, and numerical control machining can be conducted. And after machining is completed, the feeding assembly conveys the bar workpieces leftwards, the machined bar workpieces can be moved out, auxiliary tools do not need to be adopted for unloading the machined bar workpieces, the workload is relieved, meanwhile, the machining cost is reduced, the purpose of continuous and automatic feeding can be achieved, and efficient and stable machining operation of the bar workpieces is facilitated.

Description

Technical Field

[0001] The invention relates to the technical field of numerical control machining, in particular to a feeding device for machining bar workpieces of numerical control machine tools. Background Art

[0002] In the processing of bar workpieces, CNC machine tools are usually used for processing. In order to enable the CNC machine tools to produce automatically, the CNC machine tools will use automatic conveying and loading structures to assist in loading when processing bar workpieces, so that the bar workpieces can be automatically transported to the processing area, or cooperate with the robot to move the bar workpiece to the CNC machine tool.

[0003] At present, in the process of using a loading structure to load bar workpieces, batches of bar workpieces still need to be neatly stacked at the starting end of the loading structure, and then the loading structure is operated to transport the workpieces. The loading work of batch workpieces undoubtedly increases the work intensity. Secondly, in the unloading process, since the workpieces are located in the processing area, auxiliary tools are still required to unload the processed workpieces, thereby increasing the processing cost. Moreover, this process mainly relies on the cooperation of semi-automatic equipment and manual operation, and it is difficult to achieve the purpose of continuous automatic loading, which is not conducive to the efficient and stable processing of bar workpieces. Summary of the invention

[0004] The purpose of the present invention is to provide a feeding device for processing bar workpieces of CNC machine tools, so as to solve the problem of loading batch workpieces proposed in the above-mentioned background technology, which increases the work intensity. Secondly, during the unloading process, since the workpiece is located in the processing area, auxiliary tools are still required to unload the processed workpiece, thereby increasing the processing cost. Moreover, this process mainly relies on the cooperation of semi-automatic equipment and manual operation, and it is difficult to achieve the purpose of continuous automatic feeding.

[0005] The purpose of the present invention is to guide the material to the upper feeding table intermittently so that the feeding assembly can automatically convey the bar workpiece. The feeding assembly conveys the bar workpiece to the right to the processing area, and then the CNC processing can be carried out. After the processing is completed, the feeding assembly conveys the bar workpiece to the left, and the processed bar workpiece can be removed. There is no need to use auxiliary tools to unload the processed bar workpiece, which reduces the workload and reduces the processing cost. The purpose of continuous automatic feeding can be achieved, which is conducive to the efficient and stable processing of the bar workpiece. The two opposite feed rollers form a V-shaped structure, so that the feed rollers can be suitable for conveying bar workpieces of different specifications, so that the bar workpiece is always in the center of the processing area, thereby improving the loading and processing accuracy. The top plate is driven to move downward by controlling the extension of the two electric hydraulic rods, and the top plate drives multiple wheel frames and pressure wheels to move downward. The pressure wheels move downward and contact with the top of the bar workpiece, and cooperate with the two feed rollers to support the bar workpiece, which plays a role in supporting and limiting the bar workpiece. The bar workpiece can drive the pressure wheel to rotate during the movement, and the downward pressure of the pressure wheel will not affect the normal conveying of the bar workpiece, thereby improving the stability of loading and processing of the bar workpiece.

[0006] To achieve the above object, the present invention provides the following technical solutions: The top of the loading platform is installed with a plurality of lifting devices, and the bottom of the loading platform is installed with a plurality of lifting devices, and the lifting device is installed with a plurality of lifting devices at the bottom.

[0007] As a further solution of the present invention, the material guiding assembly includes a support seat, support legs are respectively fixed on both sides of the bottom of the support seat, the two support legs are fixedly connected to the mounting seat, one side of the support seat is fixedly connected to a material storage box, the front of the material storage box is fixed to the cross plate, inclined grooves are provided on both sides of the inner wall of the support seat, and the material pushing assembly is installed on the side of the support seat close to the feeding assembly.

[0008] As a further solution of the present invention, the pushing assembly includes a first motor, a fixed block is provided outside the first motor, the fixed block is fixed to one side of the material guide assembly, a connecting shaft is fixedly connected to the output shaft of the first motor, the connecting shaft is installed in the material guide assembly, a plurality of material pusher plates are clamped outside the connecting shaft, an arc groove and a slideway are provided on the material pusher plate, and the arc groove and the slideway are communicated.

[0009] As a further solution of the present invention, the driving assembly includes a second motor, the second motor is provided with a fixed seat, the fixed seat is fixed on one side of the loading platform, a worm is fixedly connected to the output shaft of the second motor, a limit bearing is provided at the end of the worm away from the second motor, the limit bearing is clamped on one side of the inner wall of the loading platform, the outer wall of the worm is meshingly connected with the bottom of several feeding components, and a slide is installed on the side of the loading platform close to the second motor, and the slide is designed to be inclined.

[0010] As a further solution of the present invention, the feeding assembly includes a feeding roller, a rotating shaft is fixed to the bottom end of the feeding roller, a support bearing is provided outside the rotating shaft, the support bearing is clamped on the loading platform, and a worm gear is fixedly connected to the bottom end of the rotating shaft.

[0011] As a further solution of the present invention, the worm is meshingly connected with two opposite worm wheels, a baffle is installed on the top of the feed roller, the bottom end of the baffle is fixed on the loading platform, the feed roller is tilted on the loading platform, and the two opposite feed rollers form a V-shaped structure.

[0012] As a further solution of the present invention, the adjustment assembly includes a top plate, and electric hydraulic rods are fixedly connected to both sides of the top plate, and the top ends of the two electric hydraulic rods are fixed to the bottom of the cross plate. Three limit rods are equidistantly fixed on the top plate, and the limit rods are arranged through the cross plate. The bottom of the top plate is connected to the limit assembly.

[0013] As a further solution of the present invention, the limiting assembly includes a wheel frame, and the wheel frame is U-shaped, the wheel frame is arranged through the top plate, a pressure wheel is installed at the bottom of the wheel frame, a partition is provided above the pressure wheel, the partition is fixed on both sides of the inner wall of the wheel frame, springs are fixed on both sides of the partition, and the top of the spring is fixed to the bottom of the top plate.

[0014] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention places a batch of bar workpieces in a material storage box so that the bar workpiece at the bottom of the material storage box can contact the inclined groove on the support seat. Under the action of the gravity of the bar workpiece, the bar workpiece can slide in the inclined groove in the support seat and move out of the material storage box until the bar workpiece contacts multiple stripping plates. The stripping plates can block the bar workpiece and prevent the bar workpiece from sliding off the support frame. When feeding materials to the processing area of ​​the CNC machine tool, the first motor is controlled to work to drive the connecting shaft to rotate, and the connecting shaft drives the multiple stripping plates to rotate ninety degrees clockwise. At this time, the bar workpiece on the support seat can slide into the arc groove on the stripping plate. Secondly, the first motor is controlled to rotate in the opposite direction so that the connecting shaft drives the stripping plate to rotate ninety degrees counterclockwise, and the stripping plate can push the bar workpiece When it reaches the top of the feeding assembly, the bar workpiece slides into the feeding assembly from the slide on the stripper plate. At the same time, the other end of the stripper plate can block the bar workpiece on the support seat to prevent multiple bar workpieces from sliding out of the support seat at the same time. The stripper plate is controlled to rotate continuously back and forth ninety degrees, and can intermittently guide the material to the upper feeding table, so that the feeding assembly can automatically convey the bar workpiece. The feeding assembly conveys the bar workpiece to the right to the processing area for CNC processing. After the processing is completed, the feeding assembly conveys the bar workpiece to the left, and the processed bar workpiece can be removed. There is no need to use auxiliary tools to unload the processed bar workpiece, which reduces the workload and reduces the processing cost. It can achieve the purpose of continuous automatic loading, which is conducive to the efficient and stable processing of bar workpieces.

[0015] 2. The present invention controls the second motor to drive the worm to rotate. During the rotation of the worm, the two worm wheels can be driven to rotate relative to each other, so that the two worm wheels drive the two feed rollers to rotate relative to each other through the rotating shaft. When the bar workpiece contacts the two feed rollers, the feed rollers can automatically convey the bar workpiece. Because the two relative feed rollers form a V-shaped structure, the feed rollers can be suitable for conveying bar workpieces of different specifications, so that the bar workpiece is always in the center of the processing area, thereby improving the loading and processing accuracy. By controlling the extension of the two electric hydraulic rods to drive the top plate to move downward, the top plate drives multiple wheel frames and pressure wheels to move downward, the pressure wheels move downward and contact with the top of the bar workpiece, and cooperate with the two feed rollers to support the bar workpiece, thereby playing a role in supporting and limiting the bar workpiece. In addition, the bar workpiece can drive the pressure wheel to rotate during the movement, so that the downward pressure of the pressure wheel will not affect the normal conveying of the bar workpiece, thereby improving the loading and processing stability of the bar workpiece. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for describing the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0017] Figure 1 It is a three-dimensional structural schematic diagram of the present invention; Figure 2 It is a schematic diagram of the structure of the present invention when viewed from above; Figure 3 It is a structural schematic diagram of the regulating assembly of the present invention; Figure 4 It is a structural schematic diagram of the limit assembly of the present invention; Figure 5 It is a structural schematic diagram of the cross section of the loading platform of the present invention; Figure 6 It is a structural schematic diagram of the feeding assembly of the present invention; Figure 7 The structural schematic diagram of the material guide assembly of the present invention is Figure 8 It is a schematic structural diagram of the pusher assembly of the present invention.

[0018] In the accompanying drawings, the components represented by the reference numerals are listed as follows: 1. Support frame; 2. Loading platform; 3. Material guide assembly; 301. Support seat; 302. Support leg; 303. Inclined slot; 304. Material storage box; 4. Material pusher assembly; 401. First motor; 402. Fixed block; 403. Connecting shaft; 404. Material pusher plate; 405. Arc slot; 406. Slideway; 5. Driving assembly; 501. Second motor; 502. Fixed seat; 503. Worm; 5 04. Limit bearing; 6. Slide; 7. Feeding assembly; 701. Feeding roller; 702. Rotating shaft; 703. Support bearing; 704. Worm gear; 705. Guard frame; 8. Cross plate; 9. Adjusting assembly; 901. Top plate; 902. Electric hydraulic rod; 903. Limit rod; 10. Limiting assembly; 101. Wheel frame; 102. Pressure wheel; 103. Partition plate; 104. Spring; 11. Mounting seat. DETAILED DESCRIPTION

[0019] 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.

[0020] See also Figure 1-Figure 8 , the present invention provides a technical solution: A feeding device for processing bar workpieces of CNC machine tools comprises a supporting frame 1, on which a feeding platform 2 is installed, a material guiding assembly 3 is arranged above the feeding platform 2, a mounting seat 11 is fixed to the bottom of the material guiding assembly 3, the bottom end of the supporting frame 1 is fixed to the mounting seat 11, the material guiding assembly 3 is located at the rear of the supporting frame 1, a pushing assembly 4 is arranged on the side of the material guiding assembly 3 close to the feeding platform 2, a driving assembly 5 is installed at the bottom of the inner wall of the feeding platform 2, an end of the driving assembly 5 is installed on one side of the inner wall of the feeding platform 2, a plurality of feeding assemblies 7 are arranged outside the driving assembly 5, the feeding assembly 7 is installed on the feeding platform 2 through, the feeding assembly 7 is located below the pushing assembly 4, a transverse plate 8 is arranged above the plurality of feeding assemblies 7, one side of the transverse plate 8 is fixed to the front side of the material guiding assembly 3, an adjusting assembly 9 is installed on the transverse plate 8, a plurality of limiting assemblies 10 are equidistantly arranged at the bottom of the adjusting assembly 9, and the limiting assembly 10 is located between two opposite feeding assemblies 7.

[0021] During operation, since the bar workpiece can fall onto several feeding assemblies 7, the bar workpiece is supported by multiple feeding assemblies 7, and the limiting assembly 10 can contact the top of the bar workpiece to limit the bar workpiece and improve the stability of the bar workpiece transportation.

[0022] As a further solution of the present invention, the material guiding assembly 3 includes a support seat 301, support legs 302 are respectively fixed on both sides of the bottom of the support seat 301, the two support legs 302 are fixedly connected to the mounting seat 11, a storage box 304 is fixedly connected to one side of the support seat 301, the front of the storage box 304 is fixed to the cross plate 8, inclined grooves 303 are provided on both sides of the inner wall of the support seat 301, and the pushing assembly 4 is installed on the side of the support seat 301 close to the feeding assembly 7.

[0023] During operation, due to the gravity of the bar workpiece, the bar workpiece can slide in the inclined groove 303 in the support seat 301 and move out of the storage box 304 until the bar workpiece contacts multiple stripper plates 404, which is convenient for guiding the bar workpiece so that the subsequent pushing component 4 can push the bar workpiece.

[0024] As a further solution of the present invention, the pushing assembly 4 includes a first motor 401, the first motor 401 is provided with a fixed block 402 outside, the fixed block 402 is fixed to one side of the material guide assembly 3, the output shaft of the first motor 401 is fixedly connected with a connecting shaft 403, the connecting shaft 403 is installed in the material guide assembly 3, and the connecting shaft 403 is clamped with a plurality of material stripping plates 404 outside, the material stripping plates 404 are provided with an arc groove 405 and a slide 406, and the arc groove 405 and the slide 406 are communicated.

[0025] During operation, the bar workpiece contacts with multiple stripping plates 404, which can block the bar workpiece and prevent it from sliding off the support frame 1. The stripping plate 404 rotates ninety degrees clockwise, and the bar workpiece on the support seat 301 can slide into the arc groove 405 on the stripping plate 404. The connecting shaft 403 drives the stripping plate 404 to rotate ninety degrees counterclockwise, and the stripping plate 404 can push the bar workpiece to the top of the feeding assembly 7, making it convenient to move the bar workpiece to the feeding assembly 7.

[0026] As a further solution of the present invention, the driving component 5 includes a second motor 501, and the second motor 501 is provided with a fixed seat 502 outside, and the fixed seat 502 is fixed on one side of the loading platform 2. A worm 503 is fixedly connected to the output shaft of the second motor 501, and a limit bearing 504 is provided at the end of the worm 503 away from the second motor 501. The limit bearing 504 is clamped on one side of the inner wall of the loading platform 2, and the outer wall of the worm 503 is meshed and connected with the bottom of several feeding components 7. A slide 6 is installed on the side of the loading platform 2 close to the second motor 501, and the slide 6 is designed to be inclined.

[0027] During operation, the second motor 501 is controlled to drive the worm 503 to rotate. Since the two opposite worm wheels 704 are respectively meshed with the two sides of the worm 503, the two worm wheels 704 can drive the feeding roller 701 to rotate relative to each other through the rotating shaft 702 during the rotation of the worm 503, thereby providing power to the bar workpiece for its automated transportation.

[0028] As a further solution of the present invention, the feeding assembly 7 includes a feeding roller 701, a rotating shaft 702 is fixed to the bottom end of the feeding roller 701, a supporting bearing 703 is provided outside the rotating shaft 702, the supporting bearing 703 is clamped on the loading platform 2, and a worm gear 704 is fixedly connected to the bottom end of the rotating shaft 702.

[0029] During operation, the rotating shaft 702 can rotate in the supporting bearing 703 , and the supporting bearing 703 can support the rotating shaft 702 and the feeding roller 701 , thereby improving the rotation stability of the feeding roller 701 and the feeding stability.

[0030] As a further solution of the present invention, the worm 503 is meshedly connected with two opposite worm wheels 704, a retaining frame 705 is installed on the top of the feed roller 701, and the bottom end of the retaining frame 705 is fixed on the loading platform 2. The feed roller 701 is tiltedly arranged on the loading platform 2, and the two opposite feed rollers 701 form a V-shaped structure.

[0031] During operation, the two opposite feeding rollers 701 form a V-shaped structure, so that the feeding rollers 701 can be suitable for conveying bar workpieces of different specifications, so that the bar workpiece is always in the center of the processing area, thereby improving the feeding and processing accuracy.

[0032] As a further solution of the present invention, the adjustment assembly 9 includes a top plate 901, and electric hydraulic rods 902 are fixedly connected on both sides of the top plate 901, and the top ends of the two electric hydraulic rods 902 are fixed to the bottom of the cross plate 8. Three limit rods 903 are equidistantly fixed on the top plate 901, and the limit rods 903 are arranged on the cross plate 8. The bottom of the top plate 901 is connected to the limit assembly 10.

[0033] During operation, by controlling the extension of the electric hydraulic rod 902, the top plate 901 drives multiple wheel frames 101 to move, and the pressure wheel 102 moves down and contacts the top of the bar workpiece, and cooperates with the two feeding rollers 701 to support the bar workpiece, thereby playing a role in supporting and limiting the bar workpiece. The setting of the limit rod 903 can ensure the stability of the vertical movement of the top plate 901 and improve the movement stability of the pressure wheel 102.

[0034] As a further solution of the present invention, the limiting assembly 10 includes a wheel frame 101, and the wheel frame 101 is U-shaped, and the wheel frame 101 is arranged on the top plate 901, and a pressure wheel 102 is installed at the bottom of the wheel frame 101, and a partition 103 is provided above the pressure wheel 102, and the partition 103 is fixed on both sides of the inner wall of the wheel frame 101, and springs 104 are fixed on both sides of the partition 103, and the top of the spring 104 is fixed to the bottom of the top plate 901.

[0035] During operation, the bar workpiece can drive the pressure wheel 102 to rotate during the movement, so that the downward pressure of the pressure wheel 102 will not affect the normal conveying of the bar workpiece. When the pressure wheel 102 is pressed, it can squeeze the spring 104. The force of the spring 104 can support and buffer the wheel frame 101, preventing the pressure wheel 102 under the wheel frame 101 from causing wear or deformation to the bar workpiece.

[0036] The working principle of the present invention is as follows: when performing CNC machining on bar workpieces, a batch of bar workpieces are placed in a storage box 304, so that the bar workpiece at the bottom of the storage box 304 can contact the inclined groove 303 on the support seat 301, and under the action of the gravity of the bar workpiece, the bar workpiece can slide in the inclined groove 303 in the support seat 301 and move out of the storage box 304 until the bar workpiece contacts a plurality of material shifting plates 404, which can block the bar workpiece and prevent the bar workpiece from sliding off the support frame 1, and then control the first motor 401 to work The connecting shaft 403 is driven to rotate, and the connecting shaft 403 drives the plurality of material stripping plates 404 to rotate ninety degrees clockwise. At this time, the bar workpiece on the support seat 301 can slide into the arc groove 405 on the material stripping plate 404, and the first motor 401 is controlled to rotate in the reverse direction, so that the connecting shaft 403 drives the material stripping plate 404 to rotate ninety degrees counterclockwise, and the material stripping plate 404 can push the bar workpiece to the top of the feeding assembly 7, and the bar workpiece slides from the slideway 406 on the material stripping plate 404 onto the plurality of feeding rollers 701, and at the same time, the other end of the material stripping plate 404 can be pressed against the support seat 301 to block the bar workpieces to prevent multiple bar workpieces from sliding out of the support seat 301 at the same time. When conveying the bar workpieces, the two electric hydraulic rods 902 are controlled to extend to drive the top plate 901 to move downward, and the top plate 901 drives multiple wheel frames 101 and the pressure wheel 102 to move downward. The pressure wheel 102 moves downward and contacts the top of the bar workpiece, and cooperates with the two feeding rollers 701 to support the bar workpiece, which plays a role in limiting the position of the bar workpiece. Secondly, the second motor 501 is controlled to work to drive the worm 503 to rotate forward. The process of the worm 503 rotating The two worm gears 704 can be driven to rotate relative to each other, so that the two worm gears 704 drive the two feeding rollers 701 to rotate relative to each other through the rotating shaft 702. When the bar workpiece contacts the two feeding rollers 701, the feeding rollers 701 can automatically convey the bar workpiece. The feeding rollers 701 convey the bar workpiece to the right to the CNC machine tool processing area. After the processing is completed, the second motor 501 drives the worm 503 to rotate in the opposite direction. Similarly, the feeding rollers 701 rotate in the opposite direction and drive the bar workpiece to be conveyed to the left, so that the bar workpiece slides off through the slide 6 to complete the unloading work.

Claims

1. A feeding device for machining bar workpieces of a CNC machine tool, comprising a support frame (1), characterized in that: A loading platform (2) is installed on the support frame (1), a material guide assembly (3) is provided above the loading platform (2), a mounting seat (11) is fixed to the bottom of the material guide assembly (3), the bottom end of the support frame (1) is fixed to the mounting seat (11), the material guide assembly (3) is located behind the support frame (1), a material push assembly (4) is installed on the side of the material guide assembly (3) close to the loading platform (2), a driving assembly (5) is installed at the bottom of the inner wall of the loading platform (2), and the end of the driving assembly (5) is installed on one side of the inner wall of the loading platform (2). The driving component (5) is provided with a plurality of feeding components (7) outside, the feeding components (7) are installed on the loading platform (2), the feeding components (7) are located below the pushing component (4), a transverse plate (8) is provided above the plurality of feeding components (7), one side of the transverse plate (8) is fixed to the front side of the material guide component (3), an adjusting component (9) is installed on the transverse plate (8), a plurality of limiting components (10) are installed at equal intervals on the bottom of the adjusting component (9), and the limiting component (10) is located between two opposite feeding components (7).

2. A feeding device for machining bar workpieces of a CNC machine tool according to claim 1, characterized in that: The material guiding assembly (3) comprises a support seat (301), support legs (302) are respectively fixed on both sides of the bottom of the support seat (301), the two support legs (302) are fixedly connected to the mounting seat (11), a material storage box (304) is fixedly connected to one side of the support seat (301), the front side of the material storage box (304) is fixed to the cross plate (8), inclined grooves (303) are provided on both sides of the inner wall of the support seat (301), and the material pushing assembly (4) is mounted on a side of the support seat (301) close to the material feeding assembly (7).

3. A feeding device for machining bar workpieces of a CNC machine tool according to claim 1, characterized in that: The material pushing assembly (4) comprises a first motor (401), the first motor (401) is provided with a fixed block (402) outside, the fixed block (402) is fixed to one side of the material guiding assembly (3), a connecting shaft (403) is fixedly connected to the output shaft of the first motor (401), the connecting shaft (403) is installed in the material guiding assembly (3), a plurality of material shifting plates (404) are clamped outside the connecting shaft (403), the material shifting plates (404) are provided with arc grooves (405) and slideways (406), and the arc grooves (405) and the slideways (406) are connected.

4. A feeding device for machining bar workpieces of a CNC machine tool according to claim 1, characterized in that: The driving assembly (5) comprises a second motor (501), the second motor (501) is provided with a fixed seat (502) outside, the fixed seat (502) is fixed on one side of the loading platform (2), a worm (503) is fixedly connected to the output shaft of the second motor (501), a limit bearing (504) is provided at one end of the worm (503) away from the second motor (501), the limit bearing (504) is clamped on one side of the inner wall of the loading platform (2), the outer wall of the worm (503) is meshedly connected with the bottom of a plurality of feeding assemblies (7), and a slide (6) is installed on the side of the loading platform (2) close to the second motor (501), and the slide (6) is designed to be inclined.

5. A feeding device for machining bar workpieces of a CNC machine tool according to claim 4, characterized in that: The feeding assembly (7) comprises a feeding roller (701), a rotating shaft (702) being fixed at the bottom end of the feeding roller (701), a supporting bearing (703) being provided outside the rotating shaft (702), the supporting bearing (703) being clamped on the loading platform (2), and a worm gear (704) being fixedly connected to the bottom end of the rotating shaft (702).

6. A feeding device for machining bar workpieces of a CNC machine tool according to claim 5, characterized in that: The worm (503) is meshedly connected with two opposite worm wheels (704); a retaining frame (705) is installed at the top end of the feed roller (701); the bottom end of the retaining frame (705) is fixed on the loading platform (2); the feed roller (701) is tiltedly arranged on the loading platform (2); and the two opposite feed rollers (701) form a V-shaped structure.

7. A feeding device for machining bar workpieces of a CNC machine tool according to claim 1, characterized in that: The adjustment assembly (9) comprises a top plate (901), and electric hydraulic rods (902) are fixedly connected to both sides of the top plate (901), and the top ends of the two electric hydraulic rods (902) are fixed to the bottom of the cross plate (8). Three limit rods (903) are fixed to the top plate (901) at equal intervals, and the limit rods (903) are arranged to penetrate the cross plate (8). The bottom of the top plate (901) is connected to the limit assembly (10).

8. A feeding device for machining bar workpieces of a CNC machine tool according to claim 7, characterized in that: The limiting assembly (10) comprises a wheel frame (101), and the wheel frame (101) is of U-shaped design. The wheel frame (101) is arranged on the top plate (901) through the wheel frame (101). A pressure wheel (102) is installed at the bottom of the wheel frame (101). A partition (103) is provided above the pressure wheel (102). The partition (103) is fixed to two sides of the inner wall of the wheel frame (101). Springs (104) are respectively fixed on two sides of the partition (103), and the top end of the spring (104) is fixed to the bottom of the top plate (901).

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