Drilling and tapping multi-head tool

Abstract

The utility model discloses a multi-head drilling and tapping device, which includes a power distribution unit and a power output unit; the power distribution unit includes an outer cover, a central gear and a double gear; the power output unit includes a connecting plate, a power output rod arranged on the connecting plate and a terminal gear arranged on the power output rod. When drilling or tapping, the multi-head device is used, so that an ordinary bench drill can drill holes evenly distributed in the circumferential direction on a part at one time, and can also tap the threads of these holes at one time, which can significantly improve the efficiency of ordinary bench drills in drilling and tapping parts.

Description

Technical Field

[0001] The utility model relates to the technical field of drilling equipment, in particular to a multi-head drilling and tapping device. Background Art

[0002] Some mechanical parts are usually provided with threaded holes evenly distributed in the circumferential direction for connection. When processing these threaded holes, it is necessary to firstly process the light holes through drilling process, and then process the threads on the light holes through tapping process. At present, ordinary bench drills can only process one hole at a time. When there are multiple evenly distributed threaded holes on a part, it is necessary to repeat drilling and tapping many times to complete the threaded hole processing of the part, which has low production efficiency. Utility Model Content

[0003] In view of this, the purpose of the utility model is to provide a drilling and tapping multi-head device to solve the existing technical problem of improving the efficiency of threaded hole processing on parts.

[0004] The utility model drilling and tapping multi-head device comprises a power distribution unit and a power output unit;

[0005] The power distribution unit comprises an outer cover, a central gear and a duplex gear, wherein the outer cover is provided with a central hole and peripheral holes, wherein the central hole is located at the center of the outer cover, and the peripheral holes are evenly distributed on the concentric circles of the central hole; the axle of the central gear is arranged in the central hole through a bearing, and the upper end of the axle of the duplex gear is installed in the peripheral hole through a bearing, and the first gear of the duplex gear is meshed with the central gear;

[0006] The power output unit includes a connecting plate, a power output rod arranged on the connecting plate and a terminal gear arranged on the power output rod; the power output rods are evenly distributed in the circumferential direction, and the number of the power output rods is equal to the number of the double gears; the connecting plate is coaxially connected to the outer cover through screws and locating pins, and a through hole coaxial with the double gear is provided on the connecting plate, the lower end of the axle of the double gear is installed in the through hole through a bearing, and the second gear of the double gear is meshed with the terminal gear.

[0007] Furthermore, a rolling bearing rotatably matched with the power output rod is arranged on the connecting plate, a locking nut for axially locking the power output rod is arranged at the end of the power output rod, and a thrust bearing providing axial support to the power output rod is arranged on the end face of the connecting plate.

[0008] Furthermore, the drilling and tapping multi-head device also includes a connecting sleeve connected to the outer cover by screws, and the power distribution unit is located between the connecting sleeve and the power output unit.

[0009] Furthermore, there are three power output rods.

[0010] Furthermore, the number of teeth of the central gear ≥ the number of teeth of the first gear> the number of teeth of the second gear> the number of teeth of the final gear.

[0011] Furthermore, a sealing plug is provided at the lower end of the through hole.

[0012] Beneficial effects of the utility model:

[0013] 1. When drilling or tapping, the multi-head drill can be used to drill holes evenly distributed in the circumferential direction on the parts at one time, and to tap the threads of these holes at one time, which can significantly improve the efficiency of drilling and tapping parts with ordinary bench drills.

[0014] 2. The drilling and tapping manifold in this embodiment has a modular power distribution unit and a power output unit, which are easy to assemble and disassemble, and are convenient for maintenance of the internal structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a cross-sectional structural diagram of a drilling and tapping multi-head device;

[0016] Figure 2 It is a top view schematic diagram of the gear connection structure. DETAILED DESCRIPTION

[0017] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0018] As shown in the figure, the drilling and tapping multi-head device in this embodiment includes a power distribution unit and a power output unit.

[0019] The power distribution unit includes an outer cover 1, a central gear 2 and a double gear 3. The outer cover is provided with a central hole 4 and peripheral holes 5. The central hole is located at the center of the outer cover, and the peripheral holes are evenly distributed on the concentric circles of the central hole. The axle of the central gear is arranged in the central hole through a bearing, and the upper end of the axle 31 of the double gear is installed in the peripheral hole through a bearing, and the first gear 32 of the double gear is meshed with the central gear.

[0020] The power output unit includes a connecting plate 6, a power output rod 7 arranged on the connecting plate and a terminal gear 8 arranged on the power output rod; the power output rods are evenly distributed in the circumferential direction, and the number of the power output rods is equal to the number of the double gears; the connecting plate is coaxially connected to the outer cover by screws 9 and locating pins 10, and a through hole 11 coaxial with the double gear is provided on the connecting plate, the lower end of the axle of the double gear is installed in the through hole through a bearing, and the second gear 33 of the double gear is meshed with the terminal gear.

[0021] There are three power output rods in the present embodiment. Of course, in different embodiments, the number of the double gears and the power output rods can also be adjusted according to the number of holes on the parts.

[0022] In a specific implementation, the drilling and tapping multi-head device can be used in conjunction with a bench drill for drilling and tapping. The outer cover 1 is fixed to the bench drill body, and the power output shaft of the bench drill is connected to the central gear 2. When drilling, the drill bit is connected to the power output rod 7; when tapping, the tap is connected to the power output rod 7 accordingly. By using the multi-head device, an ordinary bench drill can drill holes evenly distributed in the circumferential direction on a part at one time, and can also tap the threads of these holes at one time, which can significantly improve the efficiency of drilling and tapping parts.

[0023] As an improvement to the above embodiment, a rolling bearing 12 is provided on the connecting plate to rotate with the power output rod, a locking nut 13 is provided at the end of the power output rod to lock the power output rod in the axial direction, and a thrust bearing 14 is provided on the end surface of the connecting plate to provide axial support for the power output rod. This improved structure can keep the axial position of the power output rod stable while allowing the power output rod to rotate flexibly.

[0024] As an improvement to the above embodiment, the drilling and tapping multi-head device further comprises a connecting sleeve 15 connected to the outer cover by screws, and the power distribution unit is located between the connecting sleeve and the power output unit. The connecting sleeve 15 allows the drilling and tapping multi-head device to be conveniently connected to the body of an ordinary bench drill.

[0025] As an improvement to the above embodiment, the number of teeth of the central gear ≥ the number of teeth of the first gear> the number of teeth of the second gear> the number of teeth of the terminal gear. This improvement can increase the rotation speed of the power output rod, which is beneficial to improving the drilling efficiency and drilling quality.

[0026] As an improvement to the above embodiment, the lower end of the through hole is provided with a sealing plug 16. The sealing plug can prevent dust from entering the interior of the multi-head device, thereby protecting the multi-head device.

[0027] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. Multi-head drilling and tapping device, characterized by: including a power distribution unit and a power output unit; The power distribution unit comprises an outer cover, a central gear and a duplex gear, wherein the outer cover is provided with a central hole and peripheral holes, wherein the central hole is located at the center of the outer cover, and the peripheral holes are evenly distributed on the concentric circles of the central hole; the axle of the central gear is arranged in the central hole through a bearing, and the upper end of the axle of the duplex gear is installed in the peripheral hole through a bearing, and the first gear of the duplex gear is meshed with the central gear; The power output unit includes a connecting plate, a power output rod arranged on the connecting plate and a terminal gear arranged on the power output rod; the power output rods are evenly distributed in the circumferential direction, and the number of the power output rods is equal to the number of the double gears; the connecting plate is coaxially connected to the outer cover through screws and locating pins, and a through hole coaxial with the double gear is provided on the connecting plate, the lower end of the axle of the double gear is installed in the through hole through a bearing, and the second gear of the double gear is meshed with the terminal gear.

2. The multi-head drilling and tapping device according to claim 1, characterized in that: The connecting plate is provided with a rolling bearing that rotates with the power output rod, the end of the power output rod is provided with a locking nut for axially locking the power output rod, and the end surface of the connecting plate is provided with a thrust bearing that provides axial support for the power output rod.

3. The multi-head drilling and tapping device according to claim 1, characterized in that: It also includes a connecting sleeve connected to the outer cover by screws, and the power distribution unit is located between the connecting sleeve and the power output unit.

4. The multi-head drilling and tapping device according to claim 1, characterized in that: There are three power output rods.

5. The multi-head drilling and tapping device according to claim 1, characterized in that: The number of teeth of the central gear ≥ the number of teeth of the first gear> the number of teeth of the second gear> the number of teeth of the final gear.

6. The multi-head drilling and tapping device according to claim 1, characterized in that: A sealing plug is arranged at the lower end of the through hole.

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