A shaft positioning clamping mechanism

Abstract

The present invention relates to the technical field of shaft processing, and more specifically to a shaft positioning and clamping mechanism; it comprises a plurality of clamping devices, each of which comprises a base frame, a receiving block, a rack A, a rotating shaft, a gear A, a gear B, a gear C, a rack B, a rack C, a flap, a clamping sleeve and a clamping block; the base frame is slidably connected with the receiving block, four springs are fixedly connected between the receiving block and the base frame, a rack A is fixedly connected below the receiving block, a rotating shaft is rotatably connected in the base frame, a gear A is fixedly connected to the rotating shaft, gear A meshes with rack A for transmission, gear B and gear C are both fixedly connected to the rotating shaft, rack B is slidably connected to the base frame, rack B meshes with gear B and gear C for transmission respectively, rack C is slidably connected to the base frame, rack C meshes with gear B and gear C for transmission respectively, two flaps are rotatably connected to the base frame, and two clamping sleeves are slidably connected to the base frame; the stepped shaft can be clamped quickly and conveniently.

Description

Technical Field

[0001] The invention relates to the technical field of shaft parts processing, and more specifically to a shaft positioning clamping mechanism. Background Art

[0002] Shaft parts are one of the typical parts often encountered in hardware accessories. They are mainly used to support transmission parts, transmit torque and bear loads. They are generally composed of the outer cylindrical surface, conical surface, inner hole and thread of the concentric shaft and the corresponding end surface. According to the different structural forms of shaft parts, they can generally be divided into three categories: smooth shaft, stepped shaft and special-shaped shaft; or divided into solid shaft, hollow shaft, etc. They are used in machines to support transmission parts such as gears and pulleys to transmit torque or motion. Shaft parts are rotating parts with a length greater than the diameter. Before starting processing, shaft parts must occupy a correct position on the machine tool or fixture. This process is called positioning. In order to prevent the positioned parts from being displaced under the action of cutting force and to keep them in the correct position during the processing process, the parts must be clamped and clamped. This process is called clamping. The whole process of positioning and clamping is called clamping. When processing shaft parts, some holes need to be drilled on the outer surface of the shaft. During the drilling process, it is necessary to ensure that the shaft parts do not move, so that the processed round holes will not cause eccentricity on the shaft, thereby preventing the shaft from being damaged during use. The existing shaft parts clamping mechanisms are troublesome to install and adjust during use, and most of them are suitable for clamping straight shafts, but cannot clamp stepped shafts quickly and conveniently as needed.

[0003] The current shaft positioning and clamping mechanisms lack a shaft clamping mechanism that can clamp the stepped shaft quickly and conveniently. Summary of the invention

[0004] In order to overcome the deficiencies of the prior art, the present invention provides a shaft positioning clamping mechanism that can clamp a stepped shaft quickly and conveniently.

[0005] The technical solution adopted by the present invention to solve the technical problem is:

[0006] A shaft positioning clamping mechanism comprises a plurality of clamping devices, each clamping device comprises a base frame, a receiving block, a rack A, a rotating shaft, a gear A, a gear B, a gear C, a rack B, a rack C, a flap, a clamping sleeve and a clamping block. The base frame is slidably connected with the receiving block, four springs are fixedly connected between the receiving block and the base frame, a rack A is fixedly connected below the receiving block, a rotating shaft is rotatably connected in the base frame, a gear A is fixedly connected to the rotating shaft, gear A meshes with rack A for transmission, gear B and gear C are both fixedly connected to the rotating shaft, rack B is slidably connected to the base frame, rack B meshes with gear B and gear C for transmission respectively, rack C is slidably connected to the base frame, rack C meshes with gear B and gear C for transmission respectively, two flaps are rotatably connected to the base frame, two clamping sleeves are slidably connected to the base frame, springs are fixedly connected between the two clamping sleeves and the base frame, and clamping blocks are slidably connected in the two clamping sleeves.

[0007] The clamping device also includes a ratchet, a ratchet and a ratchet frame. The ratchet is fixedly connected to the rotating shaft, the ratchet frame is slidably connected to the base frame, the front end of the ratchet frame is fixedly connected with a ratchet, two springs are fixedly connected between the ratchet and the base frame, and the ratchet is meshed with the ratchet.

[0008] The clamping device also includes a plurality of circular holes, and the two clamping blocks are respectively provided with a plurality of circular holes. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] The present invention is further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0010] Figure 1 It is a structural schematic diagram of a shaft positioning clamping mechanism in the present invention;

[0011] Figure 2 It is a schematic diagram of the structure of the clamping device in the present invention;

[0012] Figure 3 It is a planed view of the clamping device of the present invention;

[0013] Figure 4 It is a structural schematic diagram of the bottom frame and the flap in the present invention;

[0014] Figure 5 It is a structural schematic diagram of the bottom frame in the present invention;

[0015] Figure 6 It is a schematic diagram of the structure of the rack B in the present invention;

[0016] Figure 7 It is a schematic diagram of the structure of the base frame and the rotating shaft in the present invention;

[0017] Figure 8 It is a partial enlarged view of the base frame and the rotating shaft in the present invention;

[0018] Fig. 9 It is a structural schematic diagram of the rotating shaft and gear A in the present invention;

[0019] Fig.10 It is a planed view of the clamping sleeve and the clamping block in the present invention;

[0020] Fig.11 It is a schematic diagram of the structure of the protective plate A and the protective plate B in the present invention;

[0021] Fig.12 It is a partial enlarged view of the toggle block and the ratchet rack in the present invention;

[0022] Fig.13 It is a schematic diagram of the structure of the top plate and the receiving block in the present invention;

[0023] Fig.14 It is a structural schematic diagram of the magnetic bracket and the magnetic rod in the present invention. DETAILED DESCRIPTION

[0024] refer to Figures 1 to 10 According to the figure, the process of clamping shaft parts can be obtained:

[0025] The present invention includes a plurality of clamping devices, each of which includes a base frame 1, a receiving block 2, a rack A3, a rotating shaft 4, a gear A5, a gear B6, a gear C7, a rack B8, a rack C9, a flap 10, a clamping sleeve 11 and a clamping block 12. The base frame 1 is slidably connected with the receiving block 2, four springs are fixedly connected between the receiving block 2 and the base frame 1, a rack A3 is fixedly connected below the receiving block 2, a rotating shaft 4 is rotatably connected in the base frame 1, a gear A5 is fixedly connected to the rotating shaft 4, the gear A5 is meshed with the rack A3 for transmission, a gear B6 and a gear C7 are fixedly connected to the rotating shaft 4, the rack B8 is slidably connected to the base frame 1, the rack B8 is respectively meshed with the gear B6 and the gear C7 for transmission, and the rack C9 is slidably connected to the base frame 1. The rack C9 is meshed with the gear B6 and the gear C7 for transmission respectively, the two flaps 10 are both rotatably connected to the base frame 1, the two clamping sleeves 11 are both slidably connected to the base frame 1, springs are fixedly connected between the two clamping sleeves 11 and the base frame 1, and clamping blocks 12 are slidably connected in the two clamping sleeves 11. During use, the base frame 1 is first installed under the processing machine tool by bolts, and then the shaft parts to be processed are placed on the receiving block 2. When the parts are placed on the receiving block 2, the increased gravity on the receiving block 2 will compress the four springs between the base frame 1 and the receiving block 2, and the receiving block 2 will hold the parts and move downward together. During the downward movement, the receiving block 2 will drive the rack A3 fixed under it to move downward together, and the rack A3 and the gear A5 are engaged. Meshing transmission, gear A5 is fixedly connected to the rotating shaft 4, rack A3 will drive gear A5 to rotate counterclockwise, gear A5 will drive the rotating shaft 4 to rotate counterclockwise on the base frame 1, the counterclockwise transmission of the rotating shaft 4 will drive the gears B6 and C7 fixed thereon to rotate counterclockwise, rack B8 is meshed with gears B6 and C7 respectively, counterclockwise rotation of gears B6 and C7 will push the rack B8 below them out of the base frame 1, and counterclockwise rotation of gears B6 and C7 will push the rack C9 above them out of the base frame 1, the rack B8 on the right side slides out of the base frame 1 and touches the bottom of the flap 10 on the right, and the rack C9 on the left side slides out of the base frame 1 and touches the bottom of the flap 10 on the left. The flaps 10 on both sides will rotate inward at the same time, and the two flaps 10 rotating inward will touch the clamping sleeves 11 on both sides at the same time. The two flaps 10 will squeeze the two clamping sleeves 11 inward at the same time. The two clamping sleeves 11 are slidably connected with clamping blocks 12. The two clamping blocks 12 will squeeze inward at the same time. When the two clamping blocks 12 are squeezed inward, the shaft parts will be squeezed onto the receiving block 2. The two clamping blocks 12 and the receiving block 2 can use the gravity of the shaft parts to squeeze the shaft parts onto the receiving block 2. The two clamping blocks 12 will be located above the shaft parts, thus preventing the shaft parts from rotating on the receiving block 2. Then a drilling machine is used to drill holes on the outer surface of the shaft to obtain the effect of clamping the shaft parts.

[0026] refer to Figures 1 to 9 According to the figure, the deeper the hole is drilled, the tighter the shaft clamp becomes:

[0027] The clamping device of the present invention also includes a ratchet 13, a ratchet 14 and a ratchet frame 22. The ratchet 13 is fixedly connected to the rotating shaft 4, and the ratchet frame 22 is slidably connected to the base frame 1. The front end of the ratchet frame 22 is fixedly connected with the ratchet 14, and two springs are fixedly connected between the ratchet 14 and the base frame 1. The ratchet 14 is meshed with the ratchet 13. When the shaft parts are placed on the receiving block 2, the receiving block 2 moves downward to drive the rotating shaft 4 to rotate counterclockwise. The counterclockwise rotation of the rotating shaft 4 will drive the ratchet 13 fixedly connected thereto to rotate counterclockwise. The ratchet 14 is fixedly connected to the front end of the ratchet frame 22, and the ratchet frame 22 is slidably connected to the base frame 1. The two springs between the ratchet 14 and the base frame 1 will generate elastic force to keep the ratchet 14 against the teeth of the ratchet 13, so that The ratchet 13 can only rotate counterclockwise and cannot rotate clockwise. When a drill is used to drill a hole on the outer surface of a shaft part, a downward thrust will be generated. This thrust will cause the shaft part and the receiving block 2 to continue to move downward. The downwardly moving receiving block 2 will drive the two clamping blocks 12 to continue to squeeze inward. At the same time, the continued downward movement of the receiving block 2 will drive the ratchet 13 to continue to rotate counterclockwise. After that, the two clamping blocks 12 and the receiving block 2 can be clamped tighter. Later, when you want to discharge iron filings in the drill hole, you need to raise the drill bit to bring out the iron filings in the drill hole. After the drill bit rises, the thrust acting on the shaft part will disappear, but the ratchet 13 cannot rotate clockwise, so the rotating shaft 4 cannot rotate clockwise, the rack A3 cannot rise, and the shaft part will still be clamped in the tightest position. The drill bit is then pressed down again to drill a hole, and the shaft parts will remain on the receiving block 2 and remain stationary. After the shaft parts are processed and drilled, the operator can slide the ratchet frame 22 to the right on the base frame 1, and the ratchet frame 22 sliding to the right will drive the ratchet 14 to move to the right together. The ratchet 14 moving to the right is separated from the ratchet wheel 13, and the ratchet wheel 13 can rotate clockwise, and the rotating shaft 4 fixedly connected to the ratchet wheel 13 can also rotate clockwise. Then the operator moves the shaft parts up, and the four springs between the base frame 1 and the receiving block 2 will return to their original state during the upward movement, and the receiving block 2 will be pushed up by the four elastic forces, and the rack A3 fixedly connected under the receiving block 2 will also move up, and the rack A3 will pass through the gear Wheel A5 drives the rotating shaft 4 to rotate clockwise, and the clockwise rotation of the rotating shaft 4 will drive the gear B6 and the gear C7 to rotate clockwise, and the clockwise rotation of the gear B6 and the gear C7 will drive the rack B8 and the rack C9 to move inward, and the rack B8 and the rack C9 moving inward will not press against the flaps 10 on both sides, and then the springs between the clamping sleeves 11 on both sides and the base frame 1 will return to their original state, and the clamping sleeves 11 on both sides will press against the flaps 10 on both sides and flip to both sides on the base frame 1, and as the shaft parts move up, the clamping sleeves 11 on both sides drive the clamping blocks 12 on both sides to move to both sides, and the two clamping blocks 12 will not be located above the shaft parts, and the shaft parts can be removed from the receiving block 2, so as to obtain the effect that the deeper the drilling, the tighter the shaft clamp.

[0028] refer to Figures 1 to 9 According to the figure, the process of clamping shafts of different diameters can be obtained:

[0029] The clamping device of the present invention also includes a plurality of circular holes 15, and the two clamping blocks 12 are respectively provided with a plurality of circular holes 15, and the two clamping sleeves 11 are each provided with a circular through hole, wherein pins are inserted between the two circular holes 15 and the two circular through holes. When the shaft parts are placed on the receiving block 2, since the shaft parts have many different diameters, when it is desired to clamp shaft parts with different diameters, when the shaft parts are located on the base frame 1 with the same length, the smaller the diameter of the shaft parts, the smaller its weight will be, and the larger the diameter of the shaft parts, the greater its weight will be. When clamping shaft parts with smaller diameters, the downward moving distance of the receiving block 2 will also be shortened, and the flipping angle of the two flaps 10 will also become smaller. The distance that the two clamping sleeves 11 drive the two clamping blocks 12 to move inward will become shorter, and then the pins inserted in the circular through holes of the two clamping sleeves 11 will be pulled out, and then the two clamping blocks 12 will slide inward in the two clamping sleeves 11, and the distances that the two clamping blocks 12 slide inward in the two clamping sleeves 11 are the same. At the same time, the two clamping blocks 12 will slide out of the two clamping sleeves 11, and then the two clamping blocks 12 will contact the upper surface of the shaft parts. Then, the pin shaft will be inserted into the circular through holes of the two clamping sleeves 11. The pin shaft will pass through the circular through holes and one of the circular holes 15, so that the two clamping blocks 12 are stationary relative to the two clamping sleeves 11, so that the shaft parts with smaller diameters can be clamped. When processing shaft parts with larger diameters, first slide the two clamping blocks 12 completely into the two clamping sleeves. 11, and then after the shaft and parts are placed on the receiving block 2, the two clamping sleeves 11 will move inward, and then the two clamping blocks 12 will slide out of the two clamping sleeves 11, so that the two clamping blocks 12 contact the surface of the shaft and parts, and then two pins are used to pass through the circular through holes of the two clamping sleeves 11 and the two circular holes 15 of the two clamping blocks 12, so that the two clamping blocks 12 and the two clamping sleeves 11 are relatively stationary, so as to obtain the effect of clamping shafts of different diameters.

[0030] refer to Figures 1 to 10 According to the figure, the process of preventing shaft parts from rotating can be obtained:

[0031] The clamping device of the present invention also includes an anti-skid groove 16. The top of the two clamping blocks 12 is provided with an anti-skid groove 16. The top of the two clamping blocks 12 is provided with an anti-skid groove 16. The anti-skid groove 16 will increase the surface roughness of the top of the two clamping blocks 12. The increase in surface roughness will increase the friction of the two clamping blocks 12 on the shaft and parts. In this way, after the two clamping blocks 12 clamp the shaft and parts, the shaft and parts contact the anti-skid grooves 16 on the top of the two clamping blocks 12. The friction of the two clamping blocks 12 on the shaft and parts will increase due to the increase in surface roughness. If the shaft and parts want to rotate on the receiving block 2, they need to overcome this larger friction, so as to obtain the effect of preventing the shaft parts from rotating.

[0032] refer to Figures 1 to 11 According to the figure, we can get the process of preventing iron chips from harming operators:

[0033] The clamping device of the present invention further comprises a protective plate A17 and a protective plate B18. The top ends of the two clamping blocks 12 are fixedly connected with the protective plate A17. The two protective plates A17 are slidably connected with the protective plate B18. When a drill is used to drill holes on shaft parts, iron filings are generated. The generated iron filings will splash under the rotation of the drill bit. The splashed iron filings may cause harm to the operator. The protective plates A17 fixedly connected to the top ends of the two clamping blocks 12 will expand and contract with the two clamping blocks 12. When the two clamping blocks 12 clamp, After the shaft parts are held, the flying iron chips will contact the two protective plates A17. The flying iron chips will be blocked by the two protective plates A17 to prevent them from flying everywhere. In this way, the iron chips flying out of the drill hole will be blocked by the two protective plates A17 to the middle position. Then, the two protective plates A17 are slidably connected with protective plates B18. By sliding the two protective plates B18 in the two protective plates A17, the range of blocking the flying iron chips can be expanded or reduced, thereby preventing the iron chips from hurting the operator.

[0034] refer to Figures 1 to 12 According to the figure, the process of clamping the stepped shaft can be obtained:

[0035] The present invention also includes a base plate (19), and a plurality of clamping devices are slidably connected to the base plate (19). The base frame (1) in each clamping device is slidably connected to the base plate (19). The structure of the stepped shaft is that a shaft has a plurality of shaft segments with different diameters, and the diameters of the stepped shafts are mostly decreasing in sequence. Each group of clamping devices can clamp a shaft segment with the same diameter, and then the plurality of clamping devices respectively clamp the plurality of different shaft segments of the stepped shaft. The frontmost clamping device clamps the frontmost shaft segment of the shaft part, and then the frontmost shaft segment is clamped on the frontmost clamping device by adjusting the sliding distance of the two clamping blocks 12 on the frontmost clamping device in the two clamping sleeves 11. Then the middle clamping device is used to clamp the middle section of the shaft part, and this is also achieved by adjusting the two clamping blocks 12 on the middle clamping device in the two clamping sleeves. The middle section of the shaft part is clamped on the middle clamping device by adjusting the sliding distance in the holding sleeve 11, and then the last section of the shaft part is clamped above it using the clamping device at the rear end. The last section of the shaft part is clamped on the clamping device at the rear end by adjusting the sliding distance of the two clamping blocks 12 on the clamping device at the rear end in the two clamping sleeves 11. In this way, the stepped shaft is divided into several sections and clamped on several clamping devices respectively. Since multiple clamping devices can slide on the base plate 19, the distance between the multiple clamping devices can be changed by sliding the multiple clamping devices on the base plate 19. In this way, the distance between the multiple clamping devices can be changed according to the length of each section of the stepped shaft, so that multiple sections of the stepped shaft with different diameters are clamped on multiple clamping devices, thereby obtaining the effect of clamping the stepped shaft.

[0036] refer to Figures 1 to 14 , according to the figure, the process of keeping multiple clamping devices at a distance can be obtained:

[0037] The base plate 19 described in the present invention is provided with a plurality of circular holes, and eight circular holes are provided under the base frame 1. The base plate 19 is provided with a plurality of circular holes, and a plurality of clamping devices are slid on the base plate 19 so that the plurality of clamping devices clamp multiple positions of shaft parts, and then a pin is inserted into the plurality of circular holes provided under the base frame 1 of the plurality of clamping devices, and the inserted pin must also pass through the plurality of circular holes on the base plate 19, so that the plurality of clamping devices will remain stationary relative to the base plate 19. When the plurality of clamping devices are to be slid, the pin inserted in the base frame 1 of the plurality of clamping devices must be pulled out first, and then the plurality of clamping devices must be slid back and forth. After the plurality of clamping devices slide to a suitable position, the pin is inserted into the circular holes of the base frame 1 of the plurality of clamping devices again, so as to obtain the effect of keeping the plurality of clamping devices at a distance.

[0038] refer to Figures 1 to 12 According to the figure, the process of making multiple clamping devices loosen shaft parts can be obtained:

[0039] The present invention further comprises a toggle block 21, which is rotatably connected to the base plate 19. The toggle block 21 sequentially passes through the gaps between the ratchet racks 22 and the base frame 1 on the three sets of clamping devices, and then the tail end of the toggle block 21 is rotatably connected to the base plate 19. The ratchets 13 on the multiple clamping devices prevent the multiple sections of the shaft parts from being loosened on the multiple clamping devices. When the stepped shaft parts are to be removed from the multiple clamping devices, the operator manually rotates the toggle block 21 counterclockwise, and the toggle block 21 rotates counterclockwise on the base plate 19. The toggle block 21 will make a circular motion with the position connected to the bottom plate 19 as the center. The toggle block 21 will first contact the ratchet frame 22 at the rear end during the circular motion. The toggle block 21 will continue to rotate counterclockwise to move to the right against the ratchet frame 22. The ratchet frame 22 will move to the right and drive the ratchet 14 at the rear end to move to the right. The ratchet 14 moving to the right will separate from the ratchet wheel 13, so that the rear section of the shaft part can be removed from the clamping device at the rear end. Then the toggle block 21 will continue to rotate counterclockwise, and the toggle block 21 will contact the ratchet frame 22 at the rear end. The toggle block 21 touches the ratchet frame 22 of the middle clamping device, and the toggle block 21 continues to rotate to move the ratchet frame 22 of the middle clamping device to the right, so that the ratchet 14 of the middle clamping device will be separated from the ratchet wheel 13, and the middle section of the shaft part can be removed from the middle clamping device. Then the toggle block 21 continues to rotate counterclockwise, and the toggle block 21 will contact the ratchet frame 22 on the front end clamping device, and then the toggle block 21 will move to the right against the ratchet frame 22 of the front end clamping device, so that the ratchet 14 of the front end clamping device will be separated from the ratchet wheel 13. The three ratchet racks 22 moving to the left will press the toggle block 21 to return to the starting position, thereby achieving the effect of loosening the shaft parts by the multiple clamping devices.

[0040] refer to Figures 1 to 13 According to the figure, the process of preventing shaft parts from axial movement can be obtained:

[0041] The present invention also includes a top plate 20, and the receiving blocks 2 of the clamping devices at both ends are slidably connected with the top plates 20. The top plate 20 is connected to the receiving block 2 by sliding, and the top plate 20 can also be pulled out from the receiving block 2. A plurality of circular holes are provided on the top plate 20, and then four countersunk holes are provided on the receiving block 2. The top plate 20 is positioned on the receiving block 2 by inserting pins into the four countersunk holes. After the shaft parts are placed into the receiving blocks 2 of the clamping devices at the front and rear ends, the two clamping blocks 12 at both ends will clamp the shaft parts under the action of their own gravity, and then the top plate 20 is slid into the receiving blocks 2 at both ends, and one top plate 20 is slid into the receiving block 2 at the front end so that the inner wall of the top plate 20 touches the front end of the shaft parts, and then the pins are inserted into the four countersunk holes. The pins, while passing through the four countersunk holes, will also be inserted into four of the multiple circular holes of the top plate 20, so that the front end top plate 20 remains stationary relative to the front end receiving block 2, and then slides into another top plate 20 into the rear end receiving block 2, and then makes the inner wall of the top plate 20 contact the rear end of the shaft part, and inserts the pins into the four countersunk holes on the rear end receiving block 2. The four pins will also be inserted into four of the multiple circular holes of the rear end top plate 20 while passing through the four countersunk holes, so that the end top plate 20 remains stationary relative to the rear end receiving block 2, so that the shaft parts are clamped in the middle under the action of the top plates 20 at the front and rear ends, so that the shaft parts cannot move axially, thereby achieving the effect of preventing the shaft parts from moving axially.

[0042] Test Figures 1 to 14 According to the figure, the process of collecting iron filings can be obtained:

[0043] The present invention also includes a magnetic frame 23, a magnetic rod 24 and a collection box 25. The magnetic frame 23 is slidably connected to the bottom plate 19. The magnetic rod 24 is slidably connected inside the magnetic frame 23. The collection box 25 is slidably connected to the bottom plate 19. The magnetic frame 23 is made of aluminum material, and the magnetic rod 24 is made of permanent magnets. Iron filings will be generated during the processing of shaft parts. The iron filings will fall between the protective plates A17 and B18 when they are blocked. The magnetic rod 24 will then attract the fallen iron filings to the outer surface of the magnetic rod 24. Afterwards, when the magnetic rod 24 is full of iron filings, the operator pulls the magnetic rod 24 backward to make the magnetic rod 24 slide backward on the magnetic frame 23. Two round holes are provided on the magnetic frame 23, which are aligned with the multiple round holes provided on the bottom plate 19. The two pins are inserted in the middle to keep the magnetic frame 23 stationary relative to the bottom plate 19, and the magnetic rod 24 sliding backward will drive the iron filings attracted on the outer surface to move backward together. When the magnetic rod 24 drives the attracted iron filings to move backward and contact the magnetic frame 23, the magnetic rod 24 can pass through the magnetic frame 23, but the iron filings attracted on the outer surface of the magnetic rod 24 cannot pass through the magnetic frame 23. The iron filings will be shoveled off the outer surface of the magnetic rod 24 by the magnetic frame 23, and then the iron filings will fall into the collection box 25 below the magnetic frame 23. After that, when the magnetic rod 24 has completely passed through the magnetic frame 23, the iron filings attracted on the outer surface of the magnetic rod 24 will all fall into the collection box 25, and then the operator pushes the magnetic rod 24 to the front end to return to its original position, so as to obtain the effect of collecting iron filings.

Claims

1. A shaft positioning clamping mechanism, characterized in that: The invention comprises a plurality of clamping devices, each of which comprises a base frame (1), a receiving block (2), a rack A (3), a rotating shaft (4), a gear A (5), a gear B (6), a gear C (7), a rack B (8), a rack C (9), a flap (10), a clamping sleeve (11) and a clamping block (12); the base frame (1) is slidably connected with the receiving block (2); four springs are fixedly connected between the receiving block (2) and the base frame (1); a rack A (3) is fixedly connected below the receiving block (2); a rotating shaft (4) is rotatably connected in the base frame (1); a gear A (5) is fixedly connected to the rotating shaft (4); the gear A (5) and the rack A (3) are connected to each other. Meshing transmission, the gear B (6) and the gear C (7) are both fixedly connected to the rotating shaft (4), the rack B (8) is slidably connected to the base frame (1), the rack B (8) is respectively meshed with the gear B (6) and the gear C (7) for transmission, the rack C (9) is slidably connected to the base frame (1), the rack C (9) is respectively meshed with the gear B (6) and the gear C (7) for transmission, the two flaps (10) are both rotatably connected to the base frame (1), the two clamping sleeves (11) are both slidably connected to the base frame (1), a spring is fixedly connected between the two clamping sleeves (11) and the base frame (1), and a clamping block (12) is slidably connected to the two clamping sleeves (11); The clamping device further comprises a ratchet wheel (13), ratchet teeth (14) and a ratchet frame (22); the ratchet wheel (13) is fixedly connected to the rotating shaft (4); the ratchet frame (22) is slidably connected to the base frame (1); the front end of the ratchet frame (22) is fixedly connected to the ratchet teeth (14); two springs are fixedly connected between the ratchet teeth (14) and the base frame (1); the ratchet teeth (14) mesh with the ratchet wheel (13); The clamping device further comprises a plurality of circular holes (15), and the two clamping blocks (12) are respectively provided with the plurality of circular holes (15); It also includes a bottom plate (19), a plurality of clamping devices are slidably connected to the bottom plate (19), and a bottom frame (1) in each clamping device is slidably connected to the bottom plate (19); The bottom plate (19) is provided with a plurality of circular holes; It also includes a toggle block (21), which is rotatably connected to the bottom plate (19); It also includes a top plate (20), and the top plates (20) are slidably connected to the receiving blocks (2) of the front and rear clamping devices; It also includes a magnetic suction frame (23), a magnetic suction rod (24) and a collection box (25); the magnetic suction frame (23) is slidably connected to the bottom plate (19); the magnetic suction rod (24) is slidably connected inside the magnetic suction frame (23); and the collection box (25) is slidably connected to the bottom plate (19).

2. The shaft positioning and clamping mechanism according to claim 1, characterized in that: The clamping device also includes an anti-slip groove (16), and the top ends of the two clamping blocks (12) are each provided with an anti-slip groove (16).

3. The shaft positioning clamping mechanism according to claim 2, characterized in that: The clamping device further comprises a protective plate A (17) and a protective plate B (18), the top ends of the two clamping blocks (12) are fixedly connected to the protective plate A (17), and the two protective plates A (17) are slidably connected to the protective plates B (18).

Images