Intelligent equipment for automatically tightening engine bolt

Abstract

The invention discloses intelligent equipment for automatically screwing engine bolts, and belongs to the technical field of bolt screwing. The intelligent equipment for automatically screwing engine bolts comprises a fixing frame, mechanical arms are fixedly connected to the two sides of the fixing frame, driving mechanisms are fixedly connected to the mechanical arms, and drill bits are rotatably connected to the driving mechanisms; a bolt bit is fixedly connected to the drill bit, a bit frame is fixedly connected to the upper surface of the fixing frame, the drill bit comprises a driving shaft rotationally connected with a driving mechanism in a penetrating mode, an inclined groove is formed in the driving shaft, a connecting rod is rotationally connected into the driving shaft in a penetrating mode, and a sliding block is fixedly connected to the connecting rod. The sliding block and the inclined groove are in sliding fit with each other, and the upper end of the connecting rod is fixedly connected with a first spring. By using the mechanical arm, the driving mechanism and the drill bit, automatic replacement and automatic alignment of the bit are achieved, and the bolt tightening efficiency is greatly improved.

Description

Technical Field

[0001] The invention belongs to the technical field of bolt tightening, and in particular relates to intelligent equipment for automatically tightening engine bolts. Background Art

[0002] Engine bolts are important fasteners used to fix and connect various engine components. They are usually used to connect different components of the engine, such as the cylinder head, cylinder block, crankshaft, etc., to ensure that the various components inside the engine can be firmly connected together to avoid loosening or falling off during operation. There are a large number of bolts on the engine. If they are all tightened manually, it will lead to excessive labor intensity. Therefore, there is now an automatic tightening device for engine bolts.

[0003] The automatic tightening device for engine bolts uses a robotic arm to drive the bit to rotate, thereby tightening the engine bolts. It combines the flexibility and precision of industrial robots and can complete complex multi-angle tightening tasks. It is particularly suitable for applications that require high precision and repeatability. However, the existing automatic tightening device for engine bolts cannot automatically replace the bit. At the same time, it is difficult to align the bit and the bolt, and multiple robotic arm adjustments are required. The production efficiency is low and the scope of application is narrow. Summary of the invention

[0004] The technical problem to be solved by the present invention is to overcome the disadvantages of the above-mentioned prior art and provide an intelligent device for automatically tightening engine bolts.

[0005] The technical solution adopted to solve the above technical problems is: an intelligent device for automatic tightening of engine bolts, comprising a fixing frame, both sides of the fixing frame are fixedly connected to mechanical arms, the mechanical arms are fixedly connected to a driving mechanism, a drill is rotatably connected to the driving mechanism, a bolt bit is fixedly connected to the drill, and a bit rack is fixedly connected to the upper surface of the fixing frame;

[0006] The drill bit includes a driving shaft that passes through a rotatable connection driving mechanism, an inclined groove is provided in the driving shaft, a connecting rod passes through the driving shaft and is rotatably connected, a slider is fixedly connected to the connecting rod, the slider and the inclined groove are slidably matched with each other, and a first spring is fixedly connected to the upper end of the connecting rod.

[0007] Through the above technical scheme, through the use of a mechanical arm, a driving mechanism and a drill bit, automatic replacement and automatic alignment of the screwdriver bit are realized, which greatly improves the efficiency of tightening the bolts. Through the use of the bevel groove and the slider, when the drill bit is pressed down, the slider moves in the bevel groove, thereby driving the connecting rod to rotate, and the connecting rod drives the screwdriver bit to rotate through the rotating rod, so that the screwdriver bit is aligned with the bolt, and then it is pressed downward all the time under the action of the first spring until the screwdriver bit covers the bolt, and then the slider moves to one end of the bevel groove and is stuck under the drive shaft, and the drive shaft drives the rotating rod to rotate through the connecting rod, and the rotating rod drives the screwdriver bit to rotate through the clamping claw to tighten the bolt.

[0008] Furthermore, the robotic arm includes a rotating base fixedly connected to a fixed frame, one side of the rotating base is rotatably connected to a large arm, one end of the large arm away from the rotating base is rotatably connected to a small arm, one end of the small arm away from the large arm is rotatably connected to a first rotating joint, and one end of the first rotating joint is rotatably connected to a second rotating joint.

[0009] Through the above technical solution, the driving mechanism is driven to move by the mechanical arm, so that the drill bit can drive the screwdriver bit to move to any position, which is convenient for tightening the engine bolts.

[0010] Furthermore, the connection between the rotating seat, the upper arm, the lower arm, the first rotating joint and the second rotating joint are all driven by a servo motor, and the driving mechanism includes a shell fixedly connected to the second rotating joint, a driving motor is fixedly connected to the shell, an output end of the driving motor is fixedly connected to a rotating shaft, and an end of the rotating shaft away from the driving motor is fixedly connected to a driving gear.

[0011] Through the above technical solution, the driving motor drives the driving gear to rotate through the rotating shaft, the driving gear drives the driven gear to rotate, and the driven gear drives the driving shaft to rotate.

[0012] Furthermore, a pair of snap rings are fixedly connected to the driving shaft, and the pair of snap rings are engaged with the housing. A driven gear is fixedly connected to the upper end of the driving shaft, and the driving gear and the driven gear are engaged with each other.

[0013] Through the above technical solution, the drive shaft can be clamped on the housing through the clamping ring to prevent it from falling off.

[0014] Furthermore, the lower end of the connecting rod is fixedly connected to a rotating rod, and one end of the rotating rod away from the connecting rod is penetrated by a plurality of clamping claws which are slidably connected thereto, and the clamping claws are arranged in an inclined manner.

[0015] Through the above technical solution, the bolt bit can be fixed by the clamping claw, which makes it convenient to tighten the bolt.

[0016] Furthermore, one end of the rotating rod close to the clamp is penetrated and rotatably connected with a rotating sleeve, the clamp is provided with a plurality of thread grooves, the thread grooves and the rotating sleeve are threadedly matched with each other, and one end of the rotating sleeve away from the connecting rod is fixedly connected with a first ratchet.

[0017] Through the above technical solution, through the cooperation of the first clamping tooth and the second clamping tooth, when the driving motor drives the drill bit to rotate, the driving shaft drives the rotating rod to rotate, and the locking sleeve is clamped by the first clamping tooth, so that the ratchet ring is clamped, and the ratchet ring cooperates with the first ratchet to clamp the rotating sleeve, and the rotating rod drives the clamping jaw to rotate, and the threaded groove on the clamping jaw cooperates with the rotating sleeve, so that the clamping jaw moves inward to clamp and fix the bit.

[0018] Furthermore, the end of the rotating rod away from the connecting rod is fixedly connected to a limiting ring, the limiting ring is rotatably connected to a locking sleeve outside, the end of the locking sleeve away from the limiting ring is fixedly connected to a plurality of second teeth, the end of the locking sleeve close to the connecting rod is fixedly connected to a second spring, the end of the second spring away from the locking sleeve is fixedly connected to a ratchet ring, and the ratchet ring and the first ratchet are meshed with each other.

[0019] Through the above technical solution, when disassembling and assembling the bolt bit, since the second locking tooth is clamped by the first locking tooth, the locking sleeve is fixed, and the locking sleeve pushes the ratchet ring to clamp the first ratchet through the second spring, so that the rotating sleeve is locked, and under the thread cooperation between the rotating sleeve and the thread groove, the rotating jaws are pushed inward to clamp and fix the bolt bit, and then as the clamping of the jaws is completed, the first ratchet breaks through the thrust of the second spring to push open the ratchet ring to avoid damage to the ratchet ring.

[0020] Furthermore, the bit rack includes a base fixedly connected to the fixing frame, the base is provided with a plurality of bit fixing grooves, and a plurality of first latching teeth are fixedly connected around the bit fixing grooves.

[0021] The above technical solution facilitates the replacement and storage of bolt bits, greatly improving the use efficiency of the bolt bits.

[0022] The beneficial effects of the present invention are as follows: (1) The present invention drives the driving mechanism to move by the mechanical arm, so that the drill bit can drive the screwdriver bit to move to any position, which is convenient for tightening the engine bolts. By using the screwdriver bit rack, the mechanical arm can drive the drill bit to move to the screwdriver bit rack to replace the screwdriver bit, which greatly improves the adaptability of the automatic bolt tightening device to different bolts; (2) The present invention uses the drill bit, through the first clamping tooth and the second clamping tooth match, when the driving motor drives the drill bit to rotate, the driving shaft drives the rotating rod to rotate, the locking sleeve is clamped by the first clamping tooth, so that the ratchet ring is clamped, and the ratchet ring and the first ratchet match The rotating sleeve is clamped together, and the rotating rod drives the clamping jaws to rotate. The threaded groove on the clamping jaws cooperates with the rotating sleeve, so that the clamping jaws move inward to clamp the bit; (3) The present invention uses an inclined groove and a slider. When the drill bit is pressed down, the slider moves in the inclined groove, thereby driving the connecting rod to rotate. The connecting rod drives the bit to rotate through the rotating rod, so that the bit is aligned with the bolt. Thereafter, under the action of the first spring, it is always pressed downward until the bit is covered with the bolt. Subsequently, driven by the driving shaft, the slider moves to one end of the inclined groove and is clamped. The driving shaft drives the rotating rod to rotate through the connecting rod. The rotating rod drives the bit to rotate through the clamping jaws to tighten the bolt. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is the overall structure diagram of the present invention;

[0024] Figure 2 It is a structural diagram of a screwdriver bit rack of the present invention;

[0025] Figure 3 It is a structural diagram of the driving mechanism of the present invention;

[0026] Figure 4 It is the internal structure diagram of the driving mechanism of the present invention;

[0027] Figure 5 is an exploded view of the drill bit of the present invention;

[0028] Figure 6 yes Figure 5 A magnified image of point A;

[0029] Figure 7 It is a structural diagram of the drive seat of the present invention;

[0030] Figure 8 is a cross-sectional view of a drill bit of the present invention;

[0031] Fig. 9 yes Figure 8 Enlarged view of point B.

[0032] 1. The screwdriver bit holder includes: a screwdriver bit holder, a screwdriver bit holder, a screwdriver bit holder and a screwdriver bit holder. The screwdriver bit holder includes: a screwdriver bit holder, a screwdriver bit holder and a screwdriver bit holder. The screwdriver bit holder includes: a screwdriver bit holder, a screwdriver bit holder and a screwdriver bit holder. The screwdriver bit holder includes: a screwdriver bit holder, a screwdriver bit holder and a screwdriver bit holder. The screwdriver bit holder includes: a screwdriver bit holder, a screwdriver bit holder and a screwdriver bit holder. The screwdriver bit holder includes: a screwdriver bit holder, a screwdriver bit holder and a screwdriver bit holder. The screwdriver bit holder includes: a screwdriver bit holder, a screwdriver bit holder and a screwdriver bit holder. The screwdriver bit holder includes: a screwdriver bit holder, a screwdriver bit holder and a screwdriver bit holder. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0034] like Figure 1-Figure 9 As shown, an intelligent device for automatic tightening of engine bolts in this embodiment includes a fixed frame 1, both sides of the fixed frame 1 are fixedly connected to a mechanical arm 3, the mechanical arm 3 includes a rotating seat 31 fixedly connected to the fixed frame 1, one side of the rotating seat 31 is rotatably connected to a large arm 32, one end of the large arm 32 away from the rotating seat 31 is rotatably connected to a small arm 33, one end of the small arm 33 away from the large arm 32 is rotatably connected to a first rotating joint 34, and one end of the first rotating joint 34 is rotatably connected to a second rotating joint 35, the rotating seat 31, the large arm 32, the small arm 33, the first rotating joint 34 and the second rotating joint 35 on the mechanical arm 3 cooperate with each other to drive the driving mechanism 4, so that the drill bit 5 can be moved to any position to facilitate the tightening of the bolts.

[0035] The connection points of the rotating seat 31, the upper arm 32, the lower arm 33, the first rotating joint 34 and the second rotating joint 35 are all driven by a servo motor. The mechanical arm 3 is fixedly connected to a driving mechanism 4, and the driving mechanism 4 includes a housing 41 fixedly connected to the second rotating joint 35. A driving motor 42 is fixedly connected inside the housing 41. A rotating shaft 43 is fixedly connected to the output end of the driving motor 42. A driving gear 44 is fixedly connected to the end of the rotating shaft 43 away from the driving motor 42. The driving motor 42 drives the driving gear 44 to rotate through the rotating shaft 43.

[0036] The drill bit 5 is fixedly connected with a bolt bit 6, through which the bolt is tightened.

[0037] like Figure 4-Figure 9As shown, a drill bit 5 is rotatably connected to the driving mechanism 4, and the drill bit 5 includes a driving shaft 51 that passes through and is rotatably connected to the driving mechanism 4. An inclined groove 56 is provided in the driving shaft 51, and a connecting rod 57 is rotatably connected to the driving shaft 51. A slider 58 is fixedly connected to the connecting rod 57, and the slider 58 and the inclined groove 56 are slidably matched with each other. A first spring 59 is fixedly connected to the upper end of the connecting rod 57. In the process of the drill bit 5 moving downward, when the bolt bit 6 is not aligned with the bolt, the bolt bit 6 drives the connecting rod 57 to move upward through the rotating rod 54. At this time, the slider 58 on the connecting rod 57 cooperates with the inclined groove 56 to drive the connecting rod 57 to rotate, so that the bolt bit 6 is rotated to a position aligned with the bolt, and moves downward to cover the bolt.

[0038] A pair of snap rings 52 are fixedly connected to the drive shaft 51, and the pair of snap rings 52 are engaged with the housing 41. A driven gear 53 is fixedly connected to the upper end of the drive shaft 51, and the driving gear 44 and the driven gear 53 are engaged with each other. A rotating rod 54 is fixedly connected to the lower end of the connecting rod 57, and a plurality of clamping jaws 510 are slidably connected to the end of the rotating rod 54 away from the connecting rod 57. The clamping jaws 510 are arranged at an angle, and the drive shaft 51 can be fixed to the housing 41 through the snap ring 52 to avoid axial movement.

[0039] The end of the rotating rod 54 close to the clamping jaw 510 passes through and is rotatably connected with a rotating sleeve 512. The clamping jaw 510 is provided with a plurality of thread grooves 511. The thread grooves 511 and the rotating sleeve 512 are threadedly matched with each other. The end of the rotating sleeve 512 away from the connecting rod 57 is fixedly connected with a first ratchet 513. The end of the rotating rod 54 away from the connecting rod 57 is fixedly connected with a limiting ring 516. The limiting ring 516 is rotatably connected with a locking sleeve 55 outside. The end of the locking sleeve 55 away from the limiting ring 516 is fixedly connected with a plurality of second latch teeth 517. The end of the locking sleeve 55 close to the connecting rod 57 is fixedly connected with a second spring 515. The end of the second spring 515 away from the locking sleeve 55 is fixedly connected with a ratchet ring 514. The ratchet ring 514 and the first ratchet 51 3 are meshed with each other, the driving shaft 51 drives the connecting rod 57 to rotate through the cooperation of the inclined groove 56 and the slider 58, the connecting rod 57 drives the rotating rod 54 to rotate, and the rotating rod 54 drives the clamping jaw 510 to rotate. At this time, since the second clamping tooth 517 is clamped by the first clamping tooth 23, the locking sleeve 55 is fixed, and the locking sleeve 55 pushes the ratchet ring 514 to clamp the first ratchet 513 through the second spring 515, so that the rotating sleeve 512 is locked. Under the thread cooperation of the rotating sleeve 512 and the thread groove 511, the rotating clamping jaw 510 is pushed inward to clamp and fix the bolt bit 6. After that, as the clamping of the clamping jaw 510 is completed, the first ratchet 513 breaks through the thrust of the second spring 515 and pushes the ratchet ring 514 to avoid damage to the ratchet ring 514.

[0040] like Figure 2As shown, a bit rack 2 is fixedly connected to the upper surface of the fixing frame 1, and the bit rack 2 includes a base 21 fixedly connected to the fixing frame 1, a plurality of bit fixing grooves 22 are provided on the base 21, and a plurality of first latching teeth 23 are fixedly connected around the bit fixing grooves 22, and the second latching teeth 517 are clamped by the first latching teeth 23.

[0041] The working principle of this embodiment is as follows: the rotating seat 31, the upper arm 32, the lower arm 33, the first rotating joint 34 and the second rotating joint 35 on the mechanical arm 3 cooperate with each other to drive the driving mechanism 4 to move to the top of the bit holder 2 and move downward, so that the driving mechanism 4 drives the drill bit 5 to move downward, and the second clamping tooth 517 moves down to a position where it is engaged with the first clamping tooth 23, and then the driving motor 42 drives the driving gear 44 to rotate through the rotating shaft 43, the driving gear 44 drives the driven gear 53 to rotate, and the driven gear 53 drives the driving shaft 51 to rotate, and the driving shaft 51 drives the connecting rod 57 to rotate through the cooperation of the inclined groove 56 and the slider 58, and the connecting rod 57 is connected to the driving shaft 51. The connecting rod 57 drives the rotating rod 54 to rotate, and the rotating rod 54 drives the clamping jaw 510 to rotate. At this time, since the second latching tooth 517 is clamped by the first latching tooth 23, the locking sleeve 55 is fixed, and the locking sleeve 55 pushes the ratchet ring 514 to clamp the first ratchet tooth 513 through the second spring 515, so that the rotating sleeve 512 is locked. Under the thread cooperation between the rotating sleeve 512 and the thread groove 511, the rotating clamping jaw 510 is pushed inward to clamp the bolt bit 6. After that, as the clamping of the clamping jaw 510 is completed, the first ratchet tooth 513 breaks through the thrust of the second spring 515 and pushes the ratchet ring 514 open to avoid damage to the ratchet ring 514.

[0042] Then the robotic arm 3 drives the drill bit 5 to move above the bolt. During the downward movement of the drill bit 5, when the bolt bit 6 is not aligned with the bolt, the bolt bit 6 drives the connecting rod 57 to move upward through the rotating rod 54. At this time, the slider 58 on the connecting rod 57 cooperates with the inclined groove 56 to drive the connecting rod 57 to rotate, so that the bolt bit 6 rotates to a position aligned with the bolt, and moves down to cover the bolt, and then tightens the bolt under the drive of the drive motor 42.

[0043] The above description is only a preferred embodiment of the present invention and is not intended to limit the protection scope of the present invention.

Claims

1. An intelligent device for automatically tightening engine bolts, comprising a fixing frame (1), characterized in that: Both sides of the fixing frame (1) are fixedly connected to mechanical arms (3), the mechanical arms (3) are fixedly connected to a driving mechanism (4), a drill bit (5) is rotatably connected to the driving mechanism (4), a bolt bit (6) is fixedly connected to the drill bit (5), and a bit rack (2) is fixedly connected to the upper surface of the fixing frame (1); The drill bit (5) comprises a driving shaft (51) passing through and rotatably connected to the driving mechanism (4); an inclined groove (56) is provided in the driving shaft (51); a connecting rod (57) passes through and rotatably connected to the driving shaft (51); a sliding block (58) is fixedly connected to the connecting rod (57); the sliding block (58) and the inclined groove (56) are slidably matched with each other; and a first spring (59) is fixedly connected to the upper end of the connecting rod (57).

2. The intelligent equipment for automatic tightening of engine bolts according to claim 1, characterized in that: The mechanical arm (3) comprises a rotating seat (31) fixedly connected to a fixed frame (1); one side of the rotating seat (31) is rotatably connected to a large arm (32); one end of the large arm (32) away from the rotating seat (31) is rotatably connected to a small arm (33); one end of the small arm (33) away from the large arm (32) is rotatably connected to a first rotating joint (34); one end of the first rotating joint (34) is rotatably connected to a second rotating joint (35).

3. The intelligent equipment for automatic tightening of engine bolts according to claim 2, characterized in that: The connection points of the rotating seat (31), the upper arm (32), the lower arm (33), the first rotating joint (34) and the second rotating joint (35) are all driven by a servo motor. The driving mechanism (4) comprises a housing (41) fixedly connected to the second rotating joint (35), a driving motor (42) fixedly connected inside the housing (41), a rotating shaft (43) fixedly connected to the output end of the driving motor (42), and a driving gear (44) fixedly connected to one end of the rotating shaft (43) away from the driving motor (42).

4. The intelligent equipment for automatic tightening of engine bolts according to claim 3 is characterized in that: A pair of snap rings (52) are fixedly connected to the drive shaft (51), and the pair of snap rings (52) are engaged with the housing (41). A driven gear (53) is fixedly connected to the upper end of the drive shaft (51), and the driving gear (44) and the driven gear (53) are engaged with each other.

5. The intelligent equipment for automatic tightening of engine bolts according to claim 1, characterized in that: The lower end of the connecting rod (57) is fixedly connected to a rotating rod (54), and one end of the rotating rod (54) away from the connecting rod (57) is penetrated and slidably connected to a plurality of clamping claws (510), and the clamping claws (510) are arranged in an inclined manner.

6. The intelligent equipment for automatic tightening of engine bolts according to claim 5, characterized in that: One end of the rotating rod (54) close to the clamping jaw (510) passes through and is rotatably connected to a rotating sleeve (512); a plurality of thread grooves (511) are provided on the clamping jaw (510); the thread grooves (511) and the rotating sleeve (512) are threadedly matched with each other; and one end of the rotating sleeve (512) away from the connecting rod (57) is fixedly connected to a first ratchet (513).

7. The intelligent equipment for automatic tightening of engine bolts according to claim 6, characterized in that: One end of the rotating rod (54) away from the connecting rod (57) is fixedly connected to a limiting ring (516); the limiting ring (516) is rotatably connected to a locking sleeve (55) outside; one end of the locking sleeve (55) away from the limiting ring (516) is fixedly connected to a plurality of second latching teeth (517); one end of the locking sleeve (55) close to the connecting rod (57) is fixedly connected to a second spring (515); one end of the second spring (515) away from the locking sleeve (55) is fixedly connected to a ratchet ring (514); the ratchet ring (514) and the first ratchet (513) are meshed with each other.

8. The intelligent equipment for automatic tightening of engine bolts according to claim 1, characterized in that: The bit frame (2) comprises a base (21) fixedly connected to the fixing frame (1), the base (21) is provided with a plurality of bit fixing grooves (22), and a plurality of first latching teeth (23) are fixedly connected around the bit fixing grooves (22).

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