CN115284104A

CN115284104A - Gravity type deburring device floating in horizontal direction

Info

Publication number: CN115284104A
Application number: CN202211219084.9A
Authority: CN
Inventors: 陈月军; 吴家辉; 卢文昌; 安江恒憲
Original assignee: Guangzhou Techno Wave Machinery Co ltd
Current assignee: Guangzhou Techno Wave Machinery Co ltd
Priority date: 2022-10-08
Filing date: 2022-10-08
Publication date: 2022-11-04
Anticipated expiration: 2042-10-08
Also published as: CN115284104B

Abstract

The invention discloses a gravity type deburring device floating in the horizontal direction, which relates to a deburring device and comprises a grinding tool, a main shaft for driving the grinding tool to move, a sliding mechanism for mounting the main shaft and a rack for bearing the sliding mechanism, wherein the sliding mechanism can slide on the rack in the horizontal direction, and the bottom of the sliding mechanism is fixedly connected with a pulley mechanism; the pulley mechanism comprises a pulley and a steel rope, the steel rope passes through the pulley, the top of the steel rope is fixedly connected with the sliding mechanism, the bottom of the steel rope is fixedly provided with a counterweight mechanism, and the sliding mechanism is subjected to the tension of the steel rope in the horizontal direction and the acting force of a workpiece to be ground on the grinding tool in the horizontal direction in the opposite direction. The invention converts the gravity of the balancing weight into the force in the horizontal direction, and always applies a force towards the direction of the workpiece to be polished to the sliding mechanism, so that the polishing effect is better, and the trouble that the position of a polishing tool needs to be manually adjusted is avoided.

Description

Gravity type deburring device floating in horizontal direction

Technical Field

The invention relates to a deburring device, in particular to a gravity type deburring device floating in the horizontal direction.

Background

In the machining process, due to the problems of abrasion of a cutter, setting errors of machining distance, improper installation and the like, burrs are easy to appear on the surface of a machined workpiece, and the burrs have more or less influence on the appearance and the use of a product, so that some workpieces have a process of removing the burrs after machining is completed.

The edge of present burring device's burnisher generally adopts brush or cutter to polish to the product, but the in-process of polishing, because the distance between burnisher and the product is fixed, and no matter burnisher or brush, the wearing and tearing of certain degree can all appear in the work piece that also or is polished, in fact the distance between burnisher and the work piece is the grow, the effort of contact also reduces gradually between that burnisher and the work piece, the effect of slowly burring is just more and more poor, need the position of manual adjustment burnisher and work piece many times, not only loaded down with trivial details, the manual distance of mastering the adjustment still very difficult, it is inhomogeneous to lead to the work piece surface of polishing very likely.

Disclosure of Invention

Aiming at the defects of the prior art, the invention aims to provide a deburring device capable of automatically adjusting the distance between a grinding tool and a workpiece to be ground according to the wear degree of the grinding tool and the workpiece, so that the grinding tool and the workpiece are always attached and the acting force between the grinding tool and the workpiece is always an appropriate value, and the technical purpose is realized by the following technical scheme:

a gravity type deburring device floating in the horizontal direction comprises a grinding tool, a main shaft for driving the grinding tool to move, a sliding mechanism for mounting the main shaft and a rack for bearing the sliding mechanism, wherein the sliding mechanism can slide on the rack in the horizontal direction, and the bottom of the sliding mechanism is fixedly connected with a pulley mechanism;

the pulley mechanism comprises a pulley and a steel rope, the steel rope passes through the pulley, the top of the steel rope is fixedly connected with the sliding mechanism, the bottom of the steel rope is fixedly provided with a counterweight mechanism, and the direction of the tension of the steel rope in the horizontal direction on the sliding mechanism is opposite to the direction of the acting force of a workpiece to be polished on the polishing tool in the horizontal direction.

Because the pulling force of the steel rope on the sliding mechanism is opposite to the acting force of the ground workpiece on the grinding tool in the horizontal direction, when the grinding tool becomes thinner due to abrasion, the counterweight mechanism can drive the steel rope to slide the sliding mechanism to one side of the ground workpiece, so that the grinding tool is always attached to the surface of the workpiece, and the grinding tool can be processed smoothly.

Further: a plurality of speed sensors are arranged on the rack along the movement direction of the sliding mechanism, the speed sensors are electrically connected with a controller, and the controller is electrically connected with a motor for driving the main shaft;

the speed sensor comprises two mounting plates parallel to the movement direction of the sliding mechanism, wherein one mounting plate is provided with an optical signal transmitting device, and the other mounting plate is provided with an optical signal receiving device;

the sliding mechanism is provided with a light shielding sheet, and the light shielding sheet slides between the two mounting plates of the speed sensors.

When the side that uses cylindrical brush carries out burring to the work piece, because surface wear, cylindrical diameter diminishes, so the linear velocity of brush and work piece contact has in fact diminished, through set up different speed inductor in different positions, through controller control motor rotational speed, guarantee that slide mechanism is more nearly (wearing and tearing are the bigger more promptly, the cylinder diameter is less), the rotational speed of motor is bigger, make the linear velocity of brush side and work piece contact keep unanimous, can not lead to the burring effect to worsen because of the wearing and tearing of brush.

Further: the sliding mechanism comprises

Top plate: the horizontal device is horizontally arranged below the main shaft and is fixedly connected with the main shaft;

guide rail connecting piece: the supporting part is arranged below the top plate and comprises a vertical connecting part and a horizontally arranged supporting part which is integrated with or fixedly connected with the connecting part, and the connecting part is fixedly connected with the top plate;

linear guide rail: the supporting part is fixedly arranged on the supporting part;

guide rail fixing plate: the connecting part is horizontally and fixedly arranged at the top of the rack, and a vertical guide hole is formed in the rack for the connecting part to transversely move;

a guide rail: the horizontal arrangement is fixedly arranged at the bottom of the guide rail fixing plate and is matched with the linear guide rail;

a middle partition plate: the pulley is horizontally and fixedly arranged on the frame, the bottom of the pulley is fixedly provided with the pulley, and a horizontal stroke hole is formed in the pulley along the vertical direction;

pulling a block: and the pull block is fixedly arranged on the guide rail connecting piece, runs through the stroke hole from top to bottom, can horizontally slide in the stroke hole, and is fixedly connected with the steel rope.

Through the cooperation of linear guide and guided way, reduce sliding mechanism's frictional force, make sliding mechanism response more sensitive.

Further, the method comprises the following steps: two groups of mounting plates are mounted on the middle partition plate along the arrangement direction of the linear guide rail, each group of mounting plates comprises two mounting plates which are oppositely arranged, and the mounting plates are arranged in parallel with the arrangement direction of the linear guide rail;

one mounting plate of each group of mounting plates is provided with two optical signal emitting devices along the arrangement direction of the linear guide rail, the other mounting plate is correspondingly provided with two optical signal receiving devices, the optical signal receiving devices are electrically connected with a controller, and the controller is electrically connected with a motor for driving the spindle;

and the bottom of the top plate is provided with two light-shading sheets, the two light-shading sheets penetrate through accommodating holes formed in the guide rail fixing plates, and the two light-shading sheets respectively slide between the two groups of mounting plates.

Through setting up the light signal inductor, with the lens cooperation, the lens shelters from light signal when passing through in two mounting panels to give the controller with signal transmission and adjust to suitable rotational speed with the motor.

Further: the counterweight mechanism includes:

fixing the tube: the fixed sleeve is arranged outside the steel rope, and the bottom of the fixed pipe is provided with an external thread;

a bearing plate: the sliding sleeve is arranged outside the fixed pipe, and the top of the sliding sleeve is horizontally provided with a balancing weight used for bearing the balancing weight;

a limiting nut: the screw thread is connected with the external thread at the bottom of the fixed pipe and is used for abutting against the bearing disc;

a balancing weight: a through hole is arranged in the fixing pipe, and the fixing pipe is sleeved outside the fixing pipe in a sliding manner.

This kind of structure is convenient adjusts counter weight mechanism weight.

Further: the grinding tool is a metal cutter or a hairbrush.

Different grinding tools can be selected for use for different types of burrs.

Further: the polishing tool is a hairbrush, the hairbrush is arranged at the end part of the main shaft and is driven to rotate by the main shaft, the hairbrush is cylindrical, and the side surface and the bottom surface of the cylindrical hairbrush are cleaning surfaces;

the main shaft is equipped with two, and two main shafts all set up and mutually perpendicular horizontally.

Because the side and the bottom surface of cylindrical brush all can be used to the clearance, consequently the main shaft can be followed two directions and set up, chooses bottom surface or side to clear up to the burr of different grade type for use.

Further, the method comprises the following steps: the pulley mechanism further comprises a second pulley, the steel rope passes through the second pulley, and the second pulley is arranged below the pulley and located on one side, opposite to the pulling direction of the sliding mechanism, of the pulley and the steel rope.

The second pulley is provided to reduce friction between the wire rope 4 and the pulley assembly, so that the sliding mechanism can move to the right more quickly when a gap is generated between the sanding tool 1 and a workpiece.

Further: and a dustproof device is arranged between the frame and the main shaft.

Set up dust keeper and can effectively prevent that the dust of polishing from getting into the slip that influences slide mechanism in the guided way of below.

Further: a reverse side cover is fixedly arranged above the guide rail fixing plate, and comprises a first horizontal plate with an opening in the middle for the connecting part to pass through and an upward first dust baffle plate fixedly or integrally connected with the periphery of the first horizontal plate;

the guide rail cover is arranged above the top plate and comprises a middle opening for the main shaft to pass through, and a second dust baffle plate is fixedly or integrally connected to the periphery of the second horizontal plate and arranged downwards.

The reverse side cover and the guide rail cover are arranged, so that the path of dust entering the guide rail is bent for multiple times from a straight line, and the probability of dust entering the guide rail is greatly reduced.

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

according to the invention, the gravity of the balancing weight is converted into the force in the horizontal direction, and the force in the direction towards the workpiece to be polished is always applied to the sliding mechanism, so that on one hand, the polishing effect is better, and on the other hand, even if the polishing tool or the workpiece to be polished is abraded, the force applied to the polishing tool by the sliding mechanism can automatically move the polishing tool towards the workpiece, so that the problem that the longer the polishing tool is applied, the worse the polishing effect is, is avoided, and the trouble of manually adjusting the position is avoided.

Drawings

FIG. 1 is a schematic view of the external structure of the present invention;

FIG. 2 is a schematic view of the internal structure of the present invention;

FIG. 3 is a schematic view of the positional relationship of the frame and the guide rail coupler;

FIG. 4 is a schematic structural view of a sideguard;

FIG. 5 is a schematic view of another angle of the internal structure of the gantry;

FIG. 6 is a schematic view of the counterweight mechanism;

FIG. 7 is a schematic diagram of the position relationship between the speed sensor and the shading sheet;

FIG. 8 is a schematic diagram of a velocity sensor configuration;

fig. 9 is a schematic structural view of the intermediate partition 9.

In the figure, 1, a grinding tool; 2. a main shaft; 21. a first main shaft; 22. a second main shaft; 3. a pulley; 31. a guide hole; 32. a guide rail; 33. a second pulley; 34. a guide rail fixing plate; 4. a steel cord; 5. a counterweight mechanism; 51. a fixed tube; 52. a load-bearing plate; 53. a limit nut; 54. a counterweight block; 6. a top plate; 7. a guide rail connector; 71. a connecting portion; 72. a support portion; 8. a linear guide rail; 9. a middle partition plate; 91. a travel hole; 10. Pulling the block; 11. a speed sensor; 111. mounting a plate; 12. a shading sheet; 13. a reverse sideshield; 131. a first horizontal plate; 132. a first dust guard; 14. a guide rail cover; 141. a second horizontal plate; 142. a second dust guard; 15. a speed two sensor; 16. a speed four sensor; 17. a speed-sensor; 18. and a speed three sensor.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front", "rear", "both ends", "one end", "the other end", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

A gravity type deburring device floating in the horizontal direction is firstly combined with the device shown in figures 1, 2, 3 and 5, a workpiece to be polished is arranged on the right side in the figures and is fixedly clamped by a robot; the right side of the figure is a brush, which is disposed on the second spindle 22, and which removes burrs by contacting the bottom surface of the right-hand cylindrical shape with the workpiece, while the rear side of the figure is a brush or a cutter, which is disposed on the first spindle; which removes burrs by contacting the cylindrical side surface with the workpiece. The two main shafts 2 are arranged in a staggered way up and down and do not influence each other.

The machine frame is approximately a cuboid, the top of the machine frame is provided with a guide rail fixing plate 34, and a horizontal middle partition plate 9 is fixedly arranged in the machine frame. The pulley 3 and the second pulley 33 are installed at the bottom of the middle partition 9, the second pulley 33 is arranged below the pulley 3 and on the left side of the pulley, the second pulley is arranged to reduce friction force between the steel rope 4 and the pulley component, and when a gap is generated between the grinding tool 1 and a workpiece, the sliding mechanism can move rightwards faster.

As shown in fig. 9, a stroke hole 91 is formed in the intermediate partition 9 for the pulling block 10 to move horizontally therein. The bottom of the pull block 10 is connected with a steel rope 4, and the steel rope 4 passes through the pulley 3 and the second pulley 33 and is fixedly connected with a bottom counterweight mechanism. The joint of the steel rope 4 and the pulling block 10 is positioned on the left side of the contact part of the steel wire 4 and the pulley 3, so that the steel rope 4 can generate a rightward pulling force on the pulling block 10, and the top of the pulling block 10 is fixedly connected with the two guide rail connecting pieces 7.

The rail connector 7 includes a horizontally disposed support portion 72 and a vertically disposed connecting portion 71, which are fixed or integrally connected. The connecting portion 71 penetrates through the guide rail fixing plate 34 to be fixedly connected with the top plate 6 above, and the top plate 6 is used for mounting the two vertically arranged main shafts 2. The linear guide rail 8 is fixedly arranged above the supporting part 72, the guide rail 32 is fixedly arranged at the bottom of the guide rail fixing plate 34, and the guide rail 32 is matched with the linear guide rail 8 and can move left and right in the linear guide rail 8.

According to the above description, the steel rope 4 gives a right pulling force to the pulling block 10, the pulling block 10 drives the upper guide rail connecting piece 7, so as to drive the top plate 6 to move rightwards, and the top plate 6 is used for installing the spindle 2, so that in a normal condition, the spindle 2 is pulled rightwards, even if the grinding tool 1 or a ground workpiece is worn, the distance between the grinding tool and the spindle is reduced, the spindle 2 can move rightwards, the contact between the grinding tool and the ground workpiece is always kept, and a certain interaction force exists between the grinding tool and the ground workpiece, so that the burr removal is facilitated.

As shown in fig. 6, the counterweight mechanism 5 includes a fixing tube 51 fixedly connected to the bottom of the steel cable 4, the fixing tube 51 is sleeved outside the steel cable, and the bottom of the fixing tube 51 is provided with an external thread capable of being connected to a limit nut 53. The fixed pipe 51 is also externally sleeved with a bearing disc 52, the bottom of the fixed pipe is abutted by a limit nut 53 and can be used for bearing a balancing weight 54, and the balancing weight 54 is sleeved outside the fixed pipe 51. By unscrewing the stop nut, the bearing plate 52 can be removed, thereby adjusting the weight of the counterweight 54.

As shown in fig. 2 and 4, a reverse side cover 13 is fixedly mounted above the guide rail fixing plate 34, and the reverse side cover 13 includes a first horizontal plate 131 with an opening at the middle for the connecting portion 71 to pass through, and an upward first dust guard plate 132 fixedly or integrally connected with the periphery of the first horizontal plate 131; still include guide rail cover 14, guide rail cover 14 locates roof 6 top, guide rail cover 14 include the middle part opening for main shaft 2 with the second horizontal plate 141 that the connecting seat between the roof 6 passes through, second horizontal plate 141 is fixed all around or an organic whole is connected with the second dust board 142 that sets up down. The arrangement of the reverse side cover 13 and the guide rail cover 14 can effectively prevent dust generated during deburring from entering the machine frame through various holes, thereby influencing the use of the linear guide rail 8, the pulley 3 and the second pulley 33.

As shown in fig. 7 and 8, four speed sensors 11 are arranged on the middle partition 9 from left to right, a second speed sensor 15, a fourth speed sensor 16, a first speed sensor 17 and a third speed sensor 18 are arranged from left to right, each speed sensor 11 includes two vertical mounting plates 111, one mounting plate 111 is provided with an optical signal emitting device, the other mounting plate is provided with an optical signal receiving device, and the optical signal receiving device is electrically connected with the controller.

Two vertical light shading sheets are arranged at the bottom of the top plate 6 and can respectively slide between the left and right mounting plates 111. Since the grinding tool 1 of the second spindle 22 is in contact with the workpiece from the side, when the grinding tool 1 is worn, its diameter becomes small, the linear velocity in contact with the workpiece also decreases, and the deburring effect thereof gradually deteriorates although the distance and the force between the grinding tool 1 and the workpiece do not change. Therefore, a speed sensor is provided to adjust the rotation speed of the second spindle 22 according to the degree of wear of the sanding tool 1, thereby changing the linear speed of the edge thereof, the specific principle being:

initially, the four speed sensors 11 are all shielded by the two gobos 12, and the second spindle 22 runs at the first speed. When the grinding tool 1 of the second spindle 22 is worn, its diameter is gradually reduced, and the top plate 6 carries the light-shielding sheet 12 at its bottom to the right.

Firstly, the right-side speed-one sensor 17 is not shielded by the right-side light shielding sheet 12, the optical signal receiving device transmits a signal to the controller, and the controller controls the motor to increase the rotating speed so that the second spindle 22 runs at a second speed;

then the left speed sensor 15 is not shielded by the shading sheet 12 on the left side, namely the speed sensor 17 and the speed sensor 15 are not shielded, the optical signal receiving device transmits a signal to the controller, and the controller controls the motor to increase the rotating speed so that the second spindle 22 runs at a third speed;

then the right speed three sensor 18 is not shielded by the right light shield 12, i.e. the speed one sensor 17, the speed two sensor 15 and the speed three sensor 18 are not shielded, the optical signal receiving device transmits signals to the controller, and the controller controls the motor to increase the rotating speed, so that the second spindle 22 runs at a fourth speed;

and finally, the two light-shielding sheets 12 move to the right side, the four speed inductors 11 are not shielded, the controller controls the motor to operate to the maximum power, and the second main shaft 22 operates at the fifth speed.

The first speed is more than the second speed and more than the third speed and more than the fourth speed and more than the fifth speed.

According to the rule that the smaller the diameter of the grinding tool 1, the higher the rotation speed of the second spindle 22, the uniform linear speed of the edge of the grinding tool can be substantially ensured, so that the grinding effect is not deteriorated by the wear of the grinding tool 1.

The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a burring device that gravity type horizontal direction floated, includes grinding tool (1), drive grinding tool (1) main shaft (2) of motion, is used for installing the slide mechanism of main shaft (2) and is used for bearing slide mechanism's frame, its characterized in that: the sliding mechanism can slide on the rack along the horizontal direction, and the bottom of the sliding mechanism is fixedly connected with a pulley mechanism;

the pulley mechanism comprises a pulley (3) and a steel rope (4), the steel rope (4) passes through the pulley (3), the top of the steel rope (4) is fixedly connected with the sliding mechanism, the bottom of the steel rope (4) is fixedly provided with a counterweight mechanism (5), and the direction of the tension of the sliding mechanism in the horizontal direction, which is applied by the steel rope (4), is opposite to the direction of the acting force of a workpiece to be polished on the polishing tool (1) in the horizontal direction;

a plurality of speed inductors (11) are arranged on the rack along the movement direction of the sliding mechanism, the speed inductors (11) are electrically connected with a controller, and the controller is electrically connected with a motor for driving the main shaft (2);

the speed sensor comprises two mounting plates (111) parallel to the movement direction of the sliding mechanism, wherein one mounting plate (111) is provided with an optical signal transmitting device, and the other mounting plate (111) is provided with an optical signal receiving device;

the sliding mechanism is provided with a shading sheet (12), and the shading sheet (12) slides between two mounting plates (111) of the plurality of speed sensors (11).

2. A gravity-fed horizontally floating de-burring apparatus as claimed in claim 1, wherein: the sliding mechanism comprises

Top plate (6): the horizontal device is arranged below the main shaft (2) and is fixedly connected with the main shaft (2);

guide rail connector (7): the supporting part is arranged below the top plate (6) and comprises a vertical connecting part (71) and a horizontally arranged supporting part (72) which is integrated with or fixedly connected with the connecting part (71), and the connecting part (71) is fixedly connected with the top plate (6);

linear guide (8): is fixedly arranged on the supporting part (72);

guide rail fixing plate (34): the connecting part (71) is horizontally and fixedly arranged at the top of the rack, and a vertical guide hole (31) is formed in the rack for the connecting part (71) to transversely move;

guide rail (32): the horizontal arrangement is fixedly arranged at the bottom of the guide rail fixing plate (34) and is matched with the linear guide rail (8);

intermediate partition (9): the pulley is horizontally and fixedly arranged on the frame, the bottom of the pulley is fixedly provided with the pulley (3), and a horizontal stroke hole (91) is formed in the pulley along the vertical direction;

pulling block (10): the pull block (10) is fixedly arranged on the guide rail connecting piece (7), runs through the travel hole (91) from top to bottom and can horizontally slide in the travel hole (91), and the steel rope (4) is fixedly connected with the pull block.

3. A gravity horizontally floating de-burring apparatus according to claim 2, wherein: two groups of mounting plates (111) are mounted on the middle partition plate (9) along the arrangement direction of the linear guide rail (8), each group of mounting plates (111) comprises two mounting plates (111) which are arranged oppositely, and the mounting plates (111) are arranged in parallel with the arrangement direction of the linear guide rail (8);

one mounting plate (111) of each group of mounting plates (111) is provided with two optical signal emitting devices along the arrangement direction of the linear guide rail (8), the other mounting plate (111) is correspondingly provided with two optical signal receiving devices, the optical signal receiving devices are electrically connected with a controller, and the controller is electrically connected with a motor for driving the spindle (2);

two light-shielding sheets (12) are arranged at the bottom of the top plate (6), the two light-shielding sheets (12) penetrate through accommodating holes formed in the guide rail fixing plate (34), and the two light-shielding sheets (12) respectively slide between the two groups of mounting plates (111).

4. A gravity, horizontally floating de-burring apparatus according to claim 1, wherein: the counterweight mechanism (5) includes:

fixed tube (51): the fixing sleeve is fixedly sleeved outside the steel rope (4), and the bottom of the fixing pipe (51) is provided with an external thread;

bearing disk (52): the sliding sleeve is arranged outside the fixed pipe (51), and the top of the sliding sleeve is horizontally provided with a balancing weight (54) used for bearing the balancing weight;

limiting nut (53): the bearing plate is screwed at the external thread at the bottom of the fixed pipe (51) and is used for abutting against the bearing plate (52);

a counterweight (54): a through hole is arranged in the fixing pipe, and the fixing pipe (51) is sleeved outside the fixing pipe in a sliding manner.

5. A gravity-fed horizontally floating de-burring apparatus as claimed in claim 1, wherein: the polishing tool (1) is a metal cutter or a hairbrush.

6. A gravity-fed horizontally floating de-burring apparatus as claimed in claim 5, wherein: the polishing tool (1) is a hairbrush, the hairbrush is arranged at the end part of the main shaft (2) and driven to rotate by the main shaft (2), the hairbrush is cylindrical, and the cylindrical side surface and the cylindrical bottom surface are cleaning surfaces;

the two main shafts (2) are arranged, and the two main shafts (2) are horizontally arranged and are perpendicular to each other.

7. A gravity-fed horizontally floating de-burring apparatus as claimed in claim 1, wherein: the pulley mechanism further comprises a second pulley (33), the steel rope (4) passes through the second pulley (33), and the second pulley (33) is arranged below the pulley (3) and located on one side, opposite to the pulling direction of the sliding mechanism, of the pulley (3) and the steel rope (4).

8. A gravity-fed horizontally floating de-burring apparatus as claimed in any one of claims 1-7, wherein: and a dustproof device is arranged between the frame and the main shaft (2).

9. A gravity, horizontally floating de-burring apparatus according to claim 2, wherein: a reverse side cover (13) is fixedly installed above the guide plate fixing plate (34), and the reverse side cover (13) comprises a first horizontal plate (131) with an opening in the middle for the connecting part (71) to pass through and a first dust blocking plate (132) which is fixedly or integrally connected with the periphery of the first horizontal plate (131) and arranged upwards;

still include guide rail cover (14), guide rail cover (14) are located roof (6) top, guide rail cover (14) include the middle part opening for supply main shaft (2) with second horizontal plate (141) that connecting seat between roof (6) passed through, second horizontal plate (141) are fixed all around or integrated connection has second dust board (142) that set up down.