CN112676899A

CN112676899A - Machining loading attachment based on automated control

Info

Publication number: CN112676899A
Application number: CN202110001946.XA
Authority: CN
Inventors: 张利峰
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-01-04
Filing date: 2021-01-04
Publication date: 2021-04-20

Abstract

The invention provides a machining feeding device based on automatic control, which belongs to the technical field of feeding devices and aims to solve the problem that when the feeding device is used for feeding, a new workpiece to be machined can be clamped only after the workpiece is machined, so that the feeding efficiency of the feeding device is greatly reduced; each moving mechanism upper portion all is equipped with a fixture, and every moving mechanism upper portion all has a work piece through fixture centre gripping. In the course of working, can fix another work piece centre gripping in advance on a moving mechanism upper portion of front side, then after the work piece has been processed on the rear side moving mechanism, two drive actuating cylinder telescopic links of control front side again and remove backward to work piece is pushed to machining aircraft nose below on making the front side moving mechanism, and then has improved this loading attachment's material loading efficiency greatly.

Description

Machining loading attachment based on automated control

Technical Field

The invention belongs to the technical field of feeding devices, and particularly relates to a machining feeding device based on automatic control.

Background

Machining refers to a process of changing the physical dimensions or properties of a workpiece by a mechanical device. The difference in the machining method can be divided into cutting machining and pressing machining. The production process of a machine refers to the whole process of making a product from raw materials (or semi-finished products). For machine production, the raw material transportation and preservation, production preparation, blank manufacturing, part processing and heat treatment, product assembly and debugging, painting and packaging and the like are included. The content of the production process is very wide, modern enterprises organize production and guide production by using the principle and method of system engineering, and the production process is regarded as a production system with input and output.

For example, application No.: the invention discloses a CN202010515904.3 automatic feeding device for machining, relating to the technical field of machining, wherein, a linear guide rail is symmetrically and fixedly arranged at two sides of the top of a bearing frame, the sliding end surfaces of the two linear guide rails are jointly and slidably connected with a movable clamping mechanism, the sliding end surfaces of the two linear guide rails are jointly and slidably connected with a fixed clamping mechanism at one side position of the movable clamping mechanism, a driving cylinder is respectively and fixedly arranged above the bases of the two cylinders, when in actual use, a workpiece is placed at the position between the movable clamping mechanism and the fixed clamping mechanism, then the distance between the movable clamping mechanism and the fixed clamping mechanism is controlled to be reduced, thereby realizing the clamping and fixing of the workpiece, then the two driving cylinders are controlled to act, the movable clamping mechanism, the fixed clamping mechanism and the workpiece are pushed to the lower part of a machining head by means of the two linear guide rails, the automatic guiding-in feeding and the guiding-out discharging of the workpiece are realized, and the practicability is improved.

Based on the search discovery of the above patent, when the feeding device is used, although the workpiece can be pushed to the lower part of the machining head by driving the air cylinder, so as to realize automatic introduction and feeding of the workpiece, the feeding device has the following defects in the actual use process, such as: above-mentioned loading attachment when the material loading, because the station is limited, work piece when the centre gripping adds man-hour in the below of propelling movement to machining aircraft nose, need wait after the work piece processing just can carry out the centre gripping with new work piece of treating, and can not carry out the centre gripping with another work piece in the course of working in advance, and then greatly reduced loading attachment's material loading efficiency, and four spacing posts among the above-mentioned loading attachment are when using, because need then insert corresponding four adjusting holes according to the work piece width, when meetting different width work pieces, though can adjust, spacing precision is limited, and the spacing post after extracting loses easily, and easy production wearing and tearing when base frame among the above-mentioned loading attachment slides with the guide bar, and difficult quilt after the serious wearing and tearing in time discovers by the staff.

Disclosure of Invention

In order to solve the technical problems, the invention provides an automatic control-based mechanical processing feeding device, which is used for solving the problems that when the feeding device is used for feeding, because stations are limited, when a clamped workpiece is pushed to the lower part of a mechanical processing machine head to be processed, a new workpiece to be processed can be clamped after the workpiece is processed, and another workpiece cannot be clamped in advance in the processing process, so that the feeding efficiency of the feeding device is greatly reduced, and because four limiting columns in the feeding device are used and need to be inserted into corresponding four adjusting holes according to the width of the workpiece, when workpieces with different widths are met, the adjustment can be carried out, but the limiting precision is limited, the extracted limiting columns are easy to lose, and a base frame in the feeding device is easy to wear when sliding with a guide rod, and the problem that the abrasion is not easy to be found by the working personnel in time after being serious.

The invention relates to a machining feeding device based on automatic control, which is achieved by the following specific technical means:

a machining feeding device based on automatic control comprises an L-shaped bearing frame, wherein the upper part of the L-shaped bearing frame is connected with two moving mechanisms in a rolling mode, and the inner side of each moving mechanism is provided with a limiting mechanism; the upper part of each moving mechanism is provided with a clamping mechanism, and a workpiece is clamped on the upper part of each moving mechanism through the clamping mechanism; each clamping mechanism is provided with a pressing mechanism, and each clamping mechanism is provided with a guide mechanism; the front side and the right side of the upper part of the L-shaped bearing frame are both provided with two driving cylinders through mounting seats; guiding mechanism includes guide bar, spacing slide cartridge, annular cavity, white powder and thread sealing lid, the quantity of spacing slide cartridge is two, and two equal fixed mounting of spacing slide cartridge is on a base frame side, two the spacing slide cartridge other end all has thread sealing lid through threaded connection, and every inside annular cavity that all is equipped with of spacing slide cartridge, every all be filled with white powder in the annular cavity on the spacing slide cartridge, and every equal sliding connection of spacing slide cartridge inner peripheral surface has a guide bar that runs through movable splint, two the equal fixed connection of guide bar one end is on movable splint side, and is connected with the connecting plate between two guide bar other ends.

Furthermore, the L-shaped bearing frame comprises I-shaped rails, the upper end face of the L-shaped bearing frame is provided with four I-shaped rails, a broken opening is formed at the joint of the four I-shaped rails, and a machining machine head is arranged above a included angle in the middle of the outer side of the L-shaped bearing frame;

furthermore, the moving mechanism comprises a moving plate, moving idler wheels, a fixed clamping plate and slide rails, the bottom of the moving plate is rotatably connected with eight moving idler wheels through four rotating shafts, the opposite surfaces of the four moving idler wheels on the front side and the four moving idler wheels on the rear side are respectively provided with a circular limiting plate, the fixed clamping plate is arranged on one side of the upper end face of the moving plate, a rectangular through hole is formed in the middle of the upper end face of the moving plate, the slide rails are respectively arranged on two sides of the rectangular through hole of the upper end face of the moving plate, and a T-shaped chute;

furthermore, the limiting mechanism comprises a limiting screw, a limiting slide bar and a limiting nut, the limiting screw is rotatably connected to the bottom of the movable plate through two rotating shaft supports, two reverse threads are symmetrically arranged on the periphery of the limiting screw, two limiting nuts are connected to the outside of the limiting screw through the two reverse threads, a limiting slide bar is arranged on the upper portion of each limiting nut, T-shaped sliding blocks are arranged on two sides of the bottom end face of each limiting slide bar, a limiting column is arranged on two sides of the upper end face of each limiting slide bar, rotating hand wheels are arranged at two ends of the limiting screw, and when the limiting mechanism and the movable mechanism are in an installation state, the T-shaped sliding blocks on the bottom end faces of the two limiting slide bars are respectively connected with the two sliding rails in a sliding manner;

furthermore, the clamping mechanism comprises a base frame, clamping cylinders and a movable clamping plate, the base frame is fixedly connected to the upper end face of the movable plate, two clamping cylinders are mounted on one side face of the base frame, and the telescopic ends of the two clamping cylinders penetrate through the base frame and are connected with the movable clamping plate;

furthermore, the pressing mechanism comprises a fixed plate, a pressing screw and a T-shaped pressing block, the fixed plate is fixedly connected to the top of the movable clamping plate, a threaded cylinder is arranged at the center of the upper end face of the fixed plate, the fixed plate is connected with the pressing screw through the threaded cylinder, the lower end of the pressing screw is rotatably connected with the T-shaped pressing block, an anti-skid rubber pad is arranged on the bottom end face of the T-shaped pressing block, and eight limiting slide rods which are in sliding connection with the fixed plate are symmetrically arranged on the top end face of the T-shaped pressing block;

furthermore, the thickness between the inner peripheral surface of the limiting sliding cylinder and the annular cavity is the maximum wear thickness of the inner peripheral surface of the limiting sliding cylinder, a through hole is formed in the center of the outer circular end face of the threaded sealing cover, and the diameter of the through hole in the threaded sealing cover is five millimeters to eight millimeters greater than that of the inner peripheral surface of the limiting sliding cylinder;

further, when the moving mechanism and the L-shaped bearing frame are in an installation state, the rolling surface of the moving roller is connected with the top end surface of the I-shaped rail in a rolling mode.

Compared with the prior art, the invention has the following beneficial effects:

1. according to the invention, through the arrangement of the limiting mechanism, the distance between the two limiting sliding strips is adjusted according to the width of the workpiece, when the distance is adjusted, the two limiting nuts on the rear side move towards opposite directions under the action of two reverse threads outside the limiting screw by rotating the rear side limiting screw, so that the distance between the two limiting sliding strips on the rear side is adjusted, the distance between the two limiting sliding strips adjusted by the limiting screw has better precision, and the phenomenon of losing the extracted limiting column is effectively avoided because the inserted limiting column is not required.

2. According to the feeding device, through the arrangement of the two moving mechanisms, another workpiece can be clamped and fixed on the upper part of one moving mechanism at the front side in advance in the machining process, then after the workpiece on the rear side moving mechanism is machined, the telescopic rods of the two driving cylinders at the rear side are controlled to retract rightwards, the machined workpiece is driven by the rear side moving mechanism to move back to the original position rightwards, and then the telescopic rods of the two driving cylinders at the front side are controlled to move backwards, so that the workpiece on the front side moving mechanism is pushed to the lower part of the machining head, and the feeding efficiency of the feeding device is greatly improved.

3. According to the invention, the limiting sliding cylinder is connected to the outer part of the guide rod in a sliding manner, the limiting sliding cylinder is abraded with the inner wall of the limiting sliding cylinder in the guide process of the guide rod, and when the inner wall of the limiting sliding cylinder is seriously abraded, white powder is filled in the annular cavity on the limiting sliding cylinder, and the white powder can leak to the outside along the abraded gap, so that the attention of workers can be timely aroused, and the limiting sliding cylinder is easy to find by the workers in time after being seriously abraded.

Drawings

Fig. 1 is a schematic axial view of the present invention.

Fig. 2 is a schematic structural diagram in a split state of the present invention.

Fig. 3 is a schematic structural diagram of the L-shaped bearing frame and the moving mechanism of the invention.

Fig. 4 is a schematic view of the present invention at a part enlarged in fig. 3.

Fig. 5 is a schematic structural diagram of the moving mechanism, the limiting mechanism and the guiding mechanism of the invention.

Fig. 6 is a schematic view of the present invention at a part B in fig. 1.

Fig. 7 is a schematic view of the position limiting slide cartridge and the thread sealing cap of the present invention in partial cross-section.

In the drawings, the corresponding relationship between the component names and the reference numbers is as follows:

1. an L-shaped load-bearing frame; 101. an I-shaped rail; 2. a moving mechanism; 201. moving the plate; 202. moving the roller; 203. fixing the clamping plate; 204. a slide rail; 3. a limiting mechanism; 301. a limit screw; 302. a limiting slide bar; 303. a limit nut; 4. a workpiece; 5. a clamping mechanism; 501. a base frame; 502. a clamping cylinder; 503. a movable splint; 6. a hold-down mechanism; 601. a fixing plate; 602. a compression screw; 603. a T-shaped compression block; 7. a guide mechanism; 701. a guide bar; 702. a limiting sliding cylinder; 703. an annular cavity; 704. a white powder; 705. a thread sealing cover; 8. the cylinder is driven.

Detailed Description

The embodiments of the present invention will be described in further detail with reference to the drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.

Example (b):

as shown in figures 1 to 7:

the invention provides a machining feeding device based on automatic control, which comprises: the upper part of the L-shaped bearing frame 1 is connected with two moving mechanisms 2 in a rolling manner, the L-shaped bearing frame 1 comprises an I-shaped track 101, the upper end surface of the L-shaped bearing frame 1 is provided with four I-shaped tracks 101, the intersection of the four I-shaped tracks 101 is provided with a break opening, and a machining machine head is arranged above the included angle at the middle part of the outer side of the L-shaped bearing frame 1; the inner side of each moving mechanism 2 is provided with a limiting mechanism 3; the upper part of each moving mechanism 2 is provided with a clamping mechanism 5, each clamping mechanism 5 comprises a base frame 501, clamping cylinders 502 and a movable clamp plate 503, the base frames 501 are fixedly connected to the upper end surface of the moving plate 201, two clamping cylinders 502 are mounted on one side surface of each base frame 501, and the telescopic ends of the two clamping cylinders 502 penetrate through the base frames 501 and are connected with the movable clamp plates 503; a workpiece 4 is clamped on the upper part of each moving mechanism 2 through a clamping mechanism 5; each clamping mechanism 5 is provided with a pressing mechanism 6, each pressing mechanism 6 comprises a fixed plate 601, a pressing screw 602 and a T-shaped pressing block 603, the fixed plate 601 is fixedly connected to the top of the movable clamping plate 503, a thread cylinder is arranged at the center of the upper end face of the fixed plate 601, the fixed plate 601 is connected with one pressing screw 602 through the thread cylinder, the lower end of the pressing screw 602 is rotatably connected with the T-shaped pressing block 603, the bottom end face of the T-shaped pressing block 603 is provided with an anti-skid rubber pad, and eight limiting slide rods which are slidably connected with the fixed plate 601 are symmetrically arranged on the top end face of the T-shaped pressing block 603, so that the T-shaped pressing block 603 slides up and down more stably, and only the pressing screw 602 needs to be rotated when the workpiece 4 is pressed through the pressing mechanism 6, and the pressing screw 602 drives the T-shaped pressing block 603 to move down; each clamping mechanism 5 is provided with a guide mechanism 7; two driving cylinders 8 are arranged on the front side and the right side of the upper part of the L-shaped bearing frame 1 through mounting seats; the guide mechanism 7 comprises guide rods 701, two limiting sliding barrels 702, an annular cavity 703, white powder 704 and a threaded sealing cover 705, the number of the limiting sliding barrels 702 is two, the two limiting sliding barrels 702 are fixedly installed on one side surface of the base frame 501, the other ends of the two limiting sliding barrels 702 are connected with the threaded sealing cover 705 through threads, the annular cavity 703 is arranged inside each limiting sliding barrel 702, the annular cavity 703 is filled in the annular cavity 703 on each limiting sliding barrel 702, the inner peripheral surface of each limiting sliding barrel 702 is connected with one guide rod 701 penetrating through the movable clamping plate 503 in a sliding mode, one end of each guide rod 701 is fixedly connected to one side surface of the movable clamping plate 503, and a connecting plate is connected between the other ends of the two guide rods 701; the thickness between the inner peripheral surface of the limiting sliding cylinder 702 and the annular cavity 703 is the maximum wear thickness of the inner peripheral surface of the limiting sliding cylinder 702, a through hole is formed in the center of the outer circular end surface of the threaded sealing cover 705, and the diameter of the through hole in the threaded sealing cover 705 is five millimeters to eight millimeters larger than that of the inner peripheral surface of the limiting sliding cylinder 702; moving mechanism 2 includes movable plate 201, removal gyro wheel 202, decide splint 203 and slide rail 204, and movable plate 201 bottom rotates through four pivots and is connected with eight removal gyro wheels 202, and four removal gyro wheels 202 of front side all are equipped with circular limiting plate with four removal gyro wheel 202 opposite faces of rear side, and movable plate 201 up end one side is equipped with decides splint 203, and has seted up the rectangle opening at movable plate 201 up end middle part, and movable plate 201 up end lies in rectangle opening both sides and all is equipped with a slide rail 204, and T type spout has all been seted up to every slide rail 204 up end.

Wherein, stop gear 3 includes stop screw 301, spacing draw runner 302 and stop nut 303, stop screw 301 rotates through two pivot supports and connects in the movable plate 201 bottom, and stop screw 301 periphery personally submits the symmetry and is equipped with two reverse screw threads, stop screw 301 outside has two stop nut 303 through two reverse screw threads connection, and every stop nut 303 upper portion all is equipped with a spacing draw runner 302, every spacing draw runner 302 bottom face both sides all are equipped with T type slider, and spacing draw runner 302 up end both sides all are equipped with a spacing post, stop screw 301 both ends all are equipped with the rotation hand wheel, when stop gear 3 is in the mounted state with moving mechanism 2, the T type slider of two spacing draw runner 302 bottom faces slides with two slide rails 204 respectively and is connected, thereby it is more steady when making spacing draw runner 302 slide on moving mechanism 2.

When the moving mechanism 2 and the L-shaped bearing frame 1 are in the installation state, the rolling surface of the moving roller 202 is in rolling connection with the top end surface of the i-shaped rail 101, so that the moving mechanism 2 can obtain a better guiding effect when moving.

When in use: the workpiece 4 is clamped on the upper part of a moving mechanism 2 at the rear side, when in clamping, the workpiece 4 is placed on the upper parts of two slide rails 204 at the rear side, then the distance between the two limit slide bars 302 is adjusted according to the width of the workpiece 4, when in adjustment, the rear side limit screw 301 is rotated to enable the two limit nuts 303 at the rear side to move towards opposite directions under the action of two reverse threads at the outer part of the limit screw 301, so that the distance between the two limit slide bars 302 at the rear side is adjusted, the distance between the two limit slide bars 302 after being adjusted by the limit screw 301 has better precision, and because the plugging type limit columns are not needed, the phenomenon that the limit columns after being pulled out are lost is effectively avoided, then the workpiece 4 is preliminarily limited by the limit columns on the two limit slide bars 302 at the rear side, then the rear side two clamping cylinders 502 are controlled to push towards the left telescopic rod, so that the rear movable clamping plate 503 moves towards the left and clamps the workpiece 4, then, the telescopic rods of the two driving cylinders 8 on the rear side are controlled to push leftwards, so that the rear-side moving mechanism 2 drives the workpiece 4 to move leftwards to the lower part of a machining head, and then machining is carried out, in the machining process, the other workpiece 4 can be clamped and fixed on the upper part of the moving mechanism 2 on the front side in advance, and then after the workpiece 4 on the rear-side moving mechanism 2 is machined, the telescopic rods of the two driving cylinders 8 on the rear side are controlled to retract rightwards, so that the workpiece 4 after machining is driven by the rear-side moving mechanism 2 to move rightwards to the original position, and then the telescopic rods of the two driving cylinders 8 on the front side are controlled to move backwards, so that the workpiece 4 on the front-side moving mechanism 2 is pushed to the lower part of the machining head, and the feeding efficiency of the feeding;

through having the outside sliding connection of guide bar 701 with spacing slide cartridge 702, at the guide bar 701 direction in-process, produce wearing and tearing with spacing slide cartridge 702 inner wall, when spacing slide cartridge 702 inner wall wearing and tearing were serious, because the annular cavity 703 intussuseption is filled with white powder 704 on spacing slide cartridge 702, white powder 704 will leak to the outside along the gap of wearing and tearing this moment to can in time arouse staff's attention, thereby make the easy timely discovery of staff after spacing slide cartridge 702 wearing and tearing are serious.

The embodiments of the present invention have been presented for purposes of illustration and description, and are not intended to be exhaustive or limited to the invention in the form disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiment was chosen and described in order to best explain the principles of the invention and the practical application, and to enable others of ordinary skill in the art to understand the invention for various embodiments with various modifications as are suited to the particular use contemplated.

Claims

1. The utility model provides a machining loading attachment based on automated control which characterized in that: the device comprises an L-shaped bearing frame (1), wherein two moving mechanisms (2) are connected to the upper part of the L-shaped bearing frame (1) in a rolling manner, and a limiting mechanism (3) is arranged on the inner side of each moving mechanism (2); a clamping mechanism (5) is arranged at the upper part of each moving mechanism (2), and a workpiece (4) is clamped at the upper part of each moving mechanism (2) through the clamping mechanism (5); each clamping mechanism (5) is provided with a pressing mechanism (6), and each clamping mechanism (5) is provided with a guide mechanism (7); the front side and the right side of the upper part of the L-shaped bearing frame (1) are provided with two driving cylinders (8) through mounting seats; the guide mechanism (7) comprises a guide rod (701), two limiting sliding barrels (702), an annular cavity (703), white powder (704) and a threaded sealing cover (705), two limiting sliding cylinders (702) are fixedly arranged on one side surface of the base frame (501), the other ends of the two limiting sliding cylinders (702) are connected with a threaded sealing cover (705) through threads, an annular cavity (703) is arranged inside each limiting sliding barrel (702), white powder (704) is filled in the annular cavity (703) on each limiting sliding barrel (702), and the inner peripheral surface of each limiting sliding cylinder (702) is slidably connected with a guide rod (701) penetrating through the movable clamping plate (503), one end of each guide rod (701) is fixedly connected to one side surface of the movable clamping plate (503), and a connecting plate is connected between the other ends of the two guide rods (701).

2. The machining feeding device based on automatic control as claimed in claim 1, characterized in that: l type bearing frame (1) includes I-shaped track (101), L type bearing frame (1) up end is equipped with four I-shaped tracks (101), and four I-shaped tracks (101) junctions have seted up disconnected opening, L type bearing frame (1) outside middle part contained angle department top is equipped with the machining aircraft nose.

3. The machining feeding device based on automatic control as claimed in claim 1, characterized in that: moving mechanism (2) are including movable plate (201), removal gyro wheel (202), decide splint (203) and slide rail (204), movable plate (201) bottom is rotated through four pivots and is connected with eight removal gyro wheels (202), and four removal gyro wheels (202) of front side all are equipped with circular limiting plate with four removal gyro wheel (202) opposite faces of rear side, movable plate (201) up end one side is equipped with decides splint (203), and has seted up the rectangle opening at the middle part of movable plate (201) up end, movable plate (201) up end is located rectangle opening both sides and all is equipped with a slide rail (204), and every slide rail (204) up end has all seted up T type spout.

4. The machining feeding device based on automatic control as claimed in claim 1, characterized in that: the limiting mechanism (3) comprises a limiting screw (301), a limiting slide bar (302) and a limiting nut (303), the limiting screw (301) is rotatably connected to the bottom of the moving plate (201) through two rotating shaft supports, two reverse threads are symmetrically arranged on the outer peripheral surface of the limit screw (301), two limit nuts (303) are connected to the outer part of the limit screw (301) through the two reverse threads, and the upper part of each limit nut (303) is provided with a limit slide bar (302), two sides of the bottom end surface of each limit slide bar (302) are provided with T-shaped slide blocks, and both sides of the upper end surface of the limiting slide bar (302) are respectively provided with a limiting column, both ends of the limiting screw rod (301) are respectively provided with a rotating hand wheel, when the limiting mechanism (3) and the moving mechanism (2) are in the installation state, the T-shaped sliding blocks at the bottom end surfaces of the two limiting sliding strips (302) are respectively connected with the two sliding rails (204) in a sliding manner.

5. The machining feeding device based on automatic control as claimed in claim 1, characterized in that: fixture (5) include base frame (501), centre gripping cylinder (502) and activity splint (503), base frame (501) fixed connection is at movable plate (201) up end, and base frame (501) a side-mounting has two centre gripping cylinders (502), two the flexible end of centre gripping cylinder (502) runs through base frame (501) and is connected with activity splint (503).

6. The machining feeding device based on automatic control as claimed in claim 1, characterized in that: hold-down mechanism (6) are including fixed plate (601), compression screw (602) and T type compact heap (603), fixed plate (601) fixed connection is at movable splint (503) top, and fixed plate (601) up end central point is equipped with a screw thread section of thick bamboo, be connected with a compression screw (602) through a screw thread section of thick bamboo on fixed plate (601), and compression screw (602) lower extreme rotation is connected with T type compact heap (603), T type compact heap (603) bottom face is equipped with the non-slip rubber pad, and T type compact heap (603) top end personally submits the symmetry form and is equipped with eight spacing slide bars with fixed plate (601) sliding connection.

7. The machining feeding device based on automatic control as claimed in claim 1, characterized in that: the thickness between the inner circumferential surface of the limiting sliding barrel (702) and the annular cavity (703) is the maximum thickness of the abrasion of the inner circumferential surface of the limiting sliding barrel (702), a through hole is formed in the center of the outer circular end surface of the threaded sealing cover (705), and the diameter of the through hole in the threaded sealing cover (705) is larger than five millimeters to eight millimeters of the diameter of the inner circumferential surface of the limiting sliding barrel (702).

8. The machining feeding device based on automatic control as claimed in claim 1, characterized in that: when the moving mechanism (2) and the L-shaped bearing frame (1) are in an installation state, the rolling surface of the moving roller (202) is connected with the top end surface of the I-shaped track (101) in a rolling mode.