Device for drilling holes in shaft

Abstract

The utility model relates to the technical field of shaft drilling, and discloses a shaft drilling device which comprises a support, a moving device is fixedly connected to the side wall of the support, a connecting plate is arranged on the outer wall of the moving device, a support is fixedly connected to the inner wall of the support, and a driving assembly is arranged on the inner wall of the support. The driving assembly comprises a hollow plate, the inner wall of the hollow plate is fixedly connected with a first motor, the output end of the first motor is fixedly connected with a first belt pulley, the inner wall of the hollow plate is rotatably connected with a second belt pulley, and a synchronous belt is rotatably connected between the second belt pulley and the first belt pulley. According to the drilling device, a second belt wheel rotates to drive a forward and reverse lead screw to rotate, the forward and reverse lead screw rotates to drive a first clamping plate to gather together, the effect of fixing a workpiece is achieved, and the problems that the workpiece cannot be stably fixed, so that the workpiece is prone to shaking in the machining process, and the drilling quality is low are solved; and the stability of the device for drilling the holes in the shaft is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of drilling on the shaft, especially relates to a device for drilling on the shaft. BACKGROUND

[0002] In the field of mechanical manufacturing, shaft parts are widely used in various mechanical equipment as key components. Drilling on the shaft is one of the common processes of shaft part machining, and the drilling quality directly affects the performance of the shaft and the running stability of the entire mechanical equipment.

[0003] In the prior art, the mechanical structure of the device for drilling on the shaft is various. The common one is a simple bench vice cooperating with an ordinary drilling machine, which uses the clamping force of the bench vice to fix the shaft workpiece, and then drives the drill bit to drill the shaft through the rotary motion of the drilling machine. Its technical principle is based on the basic positioning and rotary cutting principle of machinery, and the position and angle of the shaft are adjusted by manual operation to realize the drilling operation.

[0004] However, the existing technology has a prominent problem, that is, it is difficult to stably fix the shaft workpiece. The shaft part is long and slender, and the center of gravity is high. During the machining process, it is difficult to provide sufficient and stable clamping force by relying on the existing ordinary clamps such as bench vice, three-jaw chuck, etc. When the drilling machine performs drilling operation, the cutting force exerted by the drill bit on the shaft is easy to make the shaft shake. The shaking of the shaft not only causes the drilling position deviation, which cannot meet the design requirement accuracy, but also causes the hole diameter size deviation, the hole wall surface roughness increases, and seriously affects the drilling quality. Therefore, a device for drilling on the shaft is proposed to solve the above problems. UTILITY MODEL CONTENTS

[0005] In order to make up for the above shortcomings, the utility model provides a device for drilling on the shaft, which aims at improving the problem that the existing technology cannot stably fix the workpiece, which leads to shaking during machining, thereby reducing the quality of drilling.

[0006] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0007] A device for drilling on the shaft, comprising a support, the side wall of the support is fixedly connected with a moving device, the outer wall of the moving device is provided with a connecting plate, the inner wall of the support is fixedly connected with a support, and the inner wall of the support is provided with a driving assembly;

[0008] The driving assembly includes a hollow plate, a first motor fixedly connected to an inner wall of the hollow plate, a first pulley fixedly connected to an output end of the first motor, a second pulley rotationally connected to the inner wall of the hollow plate, a synchronous belt rotationally connected between the second pulley and the first pulley, a forward-reverse screw fixedly connected to a side wall of the second pulley, a first clamping plate threadedly connected to an outer wall of the forward-reverse screw, a collar fixedly connected to an inner portion of the first clamping plate, a fixed column slidingly connected to an inner wall of the collar, and a connecting plate.

[0009] As a further description of the above technical solution:

[0010] The connecting assembly includes a sleeve fixedly connected to a top of the connecting plate, and a connecting frame fixedly connected to a side wall of the sleeve.

[0011] As a further description of the above technical solution:

[0012] The connecting frame includes a second motor fixedly connected to an inner wall of the connecting frame, a connecting shaft fixedly connected to an output end of the second motor, a limiting plate fixedly connected to an outer wall of the second motor, and a first connecting block fixedly connected to an outer wall of the connecting frame.

[0013] As a further description of the above technical solution:

[0014] The first connecting block includes a hydraulic cylinder fixedly connected to a side wall of the first connecting block, a second connecting block fixedly connected to an output end of the hydraulic cylinder, and a connecting shaft fixedly connected to an outer wall of the second connecting block.

[0015] As a further description of the above technical solution:

[0016] The connecting shaft includes a hollow column fixedly connected to one end of the connecting shaft, a small bevel gear rotationally connected to an inner portion of the hollow column, and a planar tooth pattern rotationally connected to an inner wall of the hollow column.

[0017] As a further description of the above technical solution:

[0018] The planar tooth pattern is engaged with the small bevel gear, and the hollow column includes a second clamping plate arranged in the inner portion of the hollow column.

[0019] As a further description of the above technical solution:

[0020] The second clamping plate is engaged with the planar tooth pattern, and an inner wall of the second clamping plate is arranged on an outer wall of the drill bit.

[0021] The utility model has the advantages of:

[0022] 1. The utility model discloses a second pulley rotates and drives the reverse screw rod to rotate, and the reverse screw rod rotates and drives the first clamping plate of the outer wall to gather, which achieves the effect of fixing workpieces, solves the problem that workpieces cannot be stably fixed, leads to easy shaking during processing, and thus the quality of drilling is low, and the stability of the device for drilling on the shaft is improved.

[0023] 2. The utility model discloses a second clamping plate is gathered to fix the drill bit of the inner wall through the rotation of the flat tooth pattern, which achieves the effect of quickly replacing the drill bit, solves the problem that the drill bit cannot be quickly replaced, leads to low work efficiency, and thus the convenience of the device for drilling on the shaft is improved. DRAWINGS

[0024] Figure 1 It is a three-dimensional schematic view of the device for drilling on the shaft provided by the utility model;

[0025] Figure 2 It is a hollow plate cross section structure schematic view of the device for drilling on the shaft provided by the utility model;

[0026] Figure 3 It is a sleeve explosion structure schematic view of the device for drilling on the shaft provided by the utility model.

[0027] LEGEND:

[0028] 1, support; 2, moving device; 3, connecting plate; 4, sleeve; 5, hollow plate; 6, first motor; 7, first pulley; 8, synchronous belt; 9, second pulley; 10, second motor; 11, reverse screw rod; 12, fixed column; 13, first clamping plate; 14, sleeve ring; 15, connecting frame; 16, drill bit; 17, second clamping plate; 18, hollow column; 19, flat tooth pattern; 20, small bevel gear; 21, support; 22, limiting plate; 23, first connecting block; 24, hydraulic cylinder; 25, second connecting block; 26, connecting shaft. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model and not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0030] REFERENCE Figure 1 AND Figure 2The utility model provides an embodiment: a device of drilling on the shaft, including support 1, support 1 side wall fixedly connected with moving device 2, moving device 2 outer wall is provided with connecting plate 3, support 1 inner wall is fixedly connected with support 21, support 21 inner wall is provided with drive assembly,

[0031] Drive assembly includes hollow board 5, hollow board 5 adopts high -strength steel sheet, and the flatness and precision of inside space are ensured after accurate processing to provide stable installation base for drive assembly, hollow board 5 inner wall is fixedly connected with first motor 6, first motor 6 output is fixedly connected with first belt pulley 7, hollow board 5 inner wall is rotatably connected with second belt pulley 9, first belt pulley 7, second belt pulley 9 use high -strength nylon or aluminium alloy material, light in weight, wear resistance is good, can effectively transmit power and reduce inertia, rotatably connected with synchronous belt 8 between second belt pulley 9 and first belt pulley 7, synchronous belt 8 adopts rubber base material and high -strength fiber composite and is made, has high tensile strength and wear resistance, ensures that transmission is stable and low noise, second belt pulley 9 side wall is fixedly connected with positive and negative screw rod 11, positive and negative screw rod 11 outer wall is threadedly connected with first clamping plate 13, first clamping plate 13 uses quenched steel or tool steel, has high hardness and wear resistance, can firmly hold workpiece and bear the reaction force when drilling, first clamping plate 13 inside fixedly connected with thimble 14, thimble 14 adopts bronze or self -lubricating composite material, has good wear resistance and low friction coefficient, ensures that on fixed column 12 sliding is smooth, thimble 14 inner wall is slidably connected with fixed column 12, fixed column 12 adopts high -carbon steel or stainless steel, after accurate grinding processing, surface is smooth and high in hardness, provides stable sliding track for thimble 14, fixed column 12 one end is fixedly connected in the inner wall of support 21, connecting plate 3 top is provided with connecting assembly, and connecting assembly includes sleeve 4, sleeve 4 outer wall is fixedly connected at connecting plate 3 top, sleeve 4 side wall is fixedly connected with connecting frame 15.

[0032] Specifically, when using the device of drilling on the shaft, first, the first motor 6 drives the first belt pulley 7 to rotate, and the rotation of the first belt pulley 7 is transmitted to the second belt pulley 9 through the synchronous belt 8 on the outer wall of the first belt pulley 7, causing the second belt pulley 9 to rotate. Then, the rotation of the second belt pulley 9 drives the positive and negative screw rod 11 connected to its side wall, which in turn drives the first clamping plate 13 on the outer wall of the positive and negative screw rod 11 to move horizontally during rotation. The movement of the first clamping plate 13 further drives the thimble 14 inside it to slide along the outer wall of the fixed column 12, thereby achieving the clamping and fixing of the workpiece. Through this series of mechanical transmission, the device can accurately control the movement of the clamping plate, ensuring that the workpiece remains stable during drilling, achieving the effect of efficiently fixing the workpiece. In addition, the design of the fixed column 12 not only provides a sliding track for the thimble 14 but also serves as a limiting function, preventing the first clamping plate 13 from shifting during movement, further improving the stability and precision of the device.

[0033] Referring to Figure 1 And Figure 3 The inner wall of the connecting frame 15 is fixedly connected with the second motor 10, the output end of the second motor 10 is fixedly connected with the connecting shaft 26, the connecting shaft 26 is made of high-carbon alloy steel, is heat treated and finely ground, has high strength and wear resistance, can withstand large torque and axial force, the outer wall of the second motor 10 is fixedly connected with the limiting plate 22, the limiting plate 22 is made of quenched steel or tool steel, has high hardness and wear resistance, can effectively limit the displacement of the second motor 10, prevents idling and vibration, the outer wall of the connecting frame 15 is fixedly connected with the first connecting block 23, the first connecting block 23 is made of high-quality carbon steel, is surface rust-proof treated, has high strength and corrosion resistance, ensures stable connection of the hydraulic cylinder 24, the side wall of the first connecting block 23 is fixedly connected with the hydraulic cylinder 24, the output end of the hydraulic cylinder 24 is fixedly connected with the second connecting block 25, the side wall of the second connecting block 25 is fixedly connected to the outer wall of the connecting shaft 26, one end of the connecting shaft 26 is fixedly connected with the hollow column 18, the hollow column 18 is made of high-strength alloy steel or seamless steel pipe, has high rigidity and bending resistance, can provide stable support for the bevel pinion 20 and the flat tooth 19, the hollow column 18 is rotatably connected with the bevel pinion 20 inside, the hollow column 18 is rotatably connected with the flat tooth 19 inside, the flat tooth 19 is made of quenched steel or tool steel, has high hardness and wear resistance, can be closely meshed with the bevel pinion 20, realizes precise transmission, the flat tooth 19 is meshed with the bevel pinion 20, the hollow column 18 is provided with the second clamping plate 17 inside, the second clamping plate 17 is made of high-strength tool steel, is heat treated to improve hardness and wear resistance, can firmly clamp the drill bit 16 and bear the reaction force during drilling, the second clamping plate 17 is meshed with the flat tooth 19, and the inner wall of the second clamping plate 17 is arranged on the outer wall of the drill bit 16.

[0034] Specifically, when disassembling the drill bit 16, first rotate the small bevel gear 20, and the small bevel gear 20 drives the flat tooth 19 on the side wall to rotate after being stressed. The rotation of the flat tooth 19 further drives the second clamping plate 17 on the side wall to slide inside the hollow column 18, thereby driving the drill bit 16 on the inner wall to be fixed or loosened, achieving the effect of quickly replacing the drill bit 16. In addition, the hollow column 18 drives the drill bit 16 to rotate by driving the hollow column 18 with the second motor 10, thereby achieving the function of drilling. In order to ensure the accurate control of the drilling process, the output end of the hydraulic cylinder 24 drives the second connecting block 25 to move, and the movement of the second connecting block 25 transmits power through the connecting shaft 26 on the side wall, so that the connecting shaft 26 slides inside the sleeve 4. The movement of the connecting shaft 26 further drives the second motor 10 to slide inside the sleeve 4, and at the same time, through the limiting action of the limiting plate 22, the second motor 10 is prevented from idling during movement, thereby achieving accurate positioning and control of the position of the drill bit 16. Not only does it improve the efficiency of replacing the drill bit 16, but it also ensures the stability and accuracy of the drilling process, meeting the needs of complex processing tasks.

[0035] Working principle: When using the device for drilling on the shaft, first drive the first belt pulley 7 to rotate by the output end of the first motor 6, and then drive the second belt pulley 9 to rotate by the rotation of the synchronous belt 8, and then drive the positive and negative screw rod 11 on the side wall to rotate by the rotation of the second belt pulley 9, and then drive the first clamping plate 13 on the outer wall to move by the rotation of the positive and negative screw rod 11, and then drive the sleeve ring 14 inside to move by the movement of the first clamping plate 13, and make the sleeve ring 14 slide on the outer wall of the fixed column 12, and limit the first clamping plate 13, achieving the effect of fixing the workpiece;

[0036] When disassembling the drill bit 16, first rotate the small bevel gear 20, and the small bevel gear 20 drives the flat tooth 19 on the side wall to rotate after being stressed. The rotation of the flat tooth 19 further drives the second clamping plate 17 on the side wall to slide inside the hollow column 18, thereby driving the drill bit 16 on the inner wall to be fixed or loosened, achieving the effect of quickly replacing the drill bit 16. In addition, the hollow column 18 drives the drill bit 16 to rotate by driving the hollow column 18 with the second motor 10, thereby achieving the function of drilling.

[0037] Then drive the second connecting block 25 to move by the output end of the hydraulic cylinder 24, and then drive the connecting shaft 26 on the side wall to slide inside the sleeve 4 by the movement of the second connecting block 25, and then drive the second motor 10 on the side wall to slide inside the sleeve 4 by the movement of the connecting shaft 26, and then prevent the second motor 10 from idling by the limiting plate 22, achieving the control of the movement of the drill bit 16.

[0038] It should be pointed out finally that: the above only for the preferred embodiments of the utility model have, and do not for limiting the utility model, although the utility model has been described in detail with reference to the foregoing embodiments, for the person skilled in the art, it still can modify the technical scheme recorded in the foregoing each embodiment, or make equivalent replacement to part of technical features, any modification, equivalent replacement, improvement etc. that is made within the spirit and principle of the utility model, should be contained in the protection scope of the utility model.

Claims

1. A device for drilling on a shaft, comprising a support (1), characterised in that: The support (1) side wall is fixedly connected with a moving device (2), the moving device (2) outer wall is provided with a connecting plate (3), the support (1) inner wall is fixedly connected with a support (21), and the support (21) inner wall is provided with a driving assembly; The driving assembly comprises a hollow plate (5), the hollow plate (5) inner wall is fixedly connected with a first motor (6), the first motor (6) output end is fixedly connected with a first pulley (7), the hollow plate (5) inner wall is rotatably connected with a second pulley (9), the second pulley (9) and the first pulley (7) are rotatably connected with a synchronous belt (8), the second pulley (9) side wall is fixedly connected with a positive and negative screw (11), the positive and negative screw (11) outer wall is threadedly connected with a first clamping plate (13), the first clamping plate (13) is fixedly connected with a sleeve ring (14) inside, the sleeve ring (14) inner wall is slidably connected with a fixed column (12), one end of the fixed column (12) is fixedly connected with the support (21) inner wall, and the connecting plate (3) top is provided with a connecting assembly.

2. A device for drilling on a shaft according to claim 1, characterized in that: The connecting assembly comprises a sleeve (4), the sleeve (4) outer wall is fixedly connected with the connecting plate (3) top, and the sleeve (4) side wall is fixedly connected with a connecting frame (15).

3. A device for drilling on a shaft according to claim 2, characterized in that: The connecting frame (15) inner wall is fixedly connected with a second motor (10), the second motor (10) output end is fixedly connected with a connecting shaft (26), the second motor (10) outer wall is fixedly connected with a limiting plate (22), and the connecting frame (15) outer wall is fixedly connected with a first connecting block (23).

4. A device for drilling on a shaft according to claim 3, characterized in that: The first connecting block (23) side wall is fixedly connected with a hydraulic cylinder (24), the hydraulic cylinder (24) output end is fixedly connected with a second connecting block (25), and the second connecting block (25) side wall is fixedly connected with the connecting shaft (26) outer wall.

5. A device for drilling on a shaft according to claim 4, characterized in that: One end of the connecting shaft (26) is fixedly connected with a hollow column (18), the hollow column (18) is rotatably connected with a small bevel gear (20) inside, and the hollow column (18) inner wall is rotatably connected with a plane tooth (19).

6. A device for drilling on a shaft according to claim 5, characterized in that: The plane tooth (19) is engaged with the small bevel gear (20), and the hollow column (18) is provided with a second clamping plate (17) inside.

7. A device for drilling on a shaft according to claim 6, characterized in that: The second clamping plate (17) is engaged with the plane tooth (19), and the second clamping plate (17) inner wall is provided on the drill bit (16) outer wall.

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