Adjustable cutter shaft assembly

Abstract

The utility model discloses an adjustable cutter shaft assembly which comprises a connecting shaft, a drilling tool is fixedly connected to one side of the connecting shaft, a connecting sleeve is detachably connected to the surface of the connecting shaft, and a threaded rod penetrates through the interior of the connecting sleeve and forms a 120-degree angle with the connecting sleeve. The threaded rod penetrates through the thread position of the top of the connecting sleeve and is in threaded connection with a first limiting nut. According to the use requirements, the connecting sleeve is arranged on the surface of the connecting shaft in a sleeving mode and then can slide on the surface of the connecting shaft, when the through hole is aligned with the corresponding limiting screw hole, the limiting bolt can be rotated to fasten the connecting sleeve, and then the position of the limiting ring slides up and down according to the drilling depth; the limiting ring drives the threaded rod to slide in the connecting sleeve, and after the threaded rod reaches the required position, the threaded rod is fastened through the first limiting nut and the second limiting nut, so that the position of the threaded rod is limited and fixed, the position of the limiting ring is limited, and the purpose of conveniently limiting and adjusting the drilling depth is achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of tool shafts, and particularly relates to an adjustable tool shaft assembly. Background Technique

[0002] In machining, drills or cutting tools are required. The tools are generally installed on a matching tool shaft. When drilling a workpiece, a drilling tool is needed.

[0003] The prior art tool shaft installation structure with the publication number of CN221518080U connects the slot of the tool shaft body with the insert block on the fixed block. The insert block can also be driven to move by rotating the tool shaft. After rotating to the target position, the position of the fixed block is fixed by tightening the threaded ring, so that the tool shaft can be quickly installed and disassembled, and the inclination angle of the blade can be adjusted, so as to facilitate cutting different materials and expand the application range of the device.

[0004] At present, when manually drilling, it is difficult to grasp the depth of the hole to be drilled in the workpiece. Due to different requirements for the depth range of drilling, especially for some workpieces that do not need to be drilled through, it is very difficult to grasp the depth distance of drilling, thus increasing the difficulty of drilling. For this reason, we propose a tool shaft assembly that can adjust the drilling depth by means of limit to solve the above-mentioned deficiencies. Content of the Utility Model

[0005] The purpose of the utility model is to provide an adjustable tool shaft assembly, which has the purpose of facilitating limit adjustment of the drilling depth to solve the above-mentioned background technical problems.

[0006] The technical solution of the utility model to solve the above technical problems is as follows: an adjustable tool shaft assembly includes a connecting shaft. One side of the connecting shaft is fixedly connected with a drill. The surface of the connecting shaft is detachably connected with a connecting sleeve. The inside of the connecting sleeve is penetrated by threaded rods at an angle of 120 degrees to each other. The threaded rods penetrate through the threads at the top of the connecting sleeve and are threadedly connected with a first limit nut. The threaded rods penetrate through the threads at the bottom of the connecting sleeve and are threadedly connected with a second limit nut. Both the first limit nut and the second limit nut are in close contact with the connecting sleeve. The bottom of the threaded rod is fixedly connected with a limit ring. Limit screw holes are opened at positions on the surface of the connecting shaft near the lower part and at an angle of 120 degrees to each other. Through holes are opened at positions on the surface of the connecting sleeve corresponding to the limit screw holes. Limit bolts penetrate through the inside of the through holes and are threadedly connected with the corresponding limit screw holes.

[0007] Preferably, a handle body is fixedly connected to the side of the limit bolt away from the through hole, and an internal hexagonal groove is opened on the end face of the handle body.

[0008] Preferably, when the limit bolt is threadedly fastened to the limit screw hole, the end face of the handle body is located inside the through hole.

[0009] Preferably, the number of the limiting screw holes is multiple, and the multiple limiting screw holes are uniformly arranged at the lower position on the surface of the coupling shaft.

[0010] Preferably, a protective pad is fixedly connected to the end face of the limiting ring away from the threaded rod.

[0011] Preferably, a clamping groove is arranged at the upper position on the surface of the coupling shaft, and the clamping grooves are arranged on the surface of the coupling shaft at an angle of 120 degrees to each other.

[0012] 1. The beneficial effects of the present utility model are as follows: According to the usage requirements, the connection sleeve is sleeved on the surface of the coupling shaft and can then slide on the surface of the coupling shaft. When the through hole is aligned with the corresponding limiting screw hole, the limiting bolt can be rotated to fasten the connection sleeve. Then, according to the drilling depth, the position of the limiting ring is slid up and down, so that the limiting ring drives the threaded rod to slide inside the connection sleeve. When the required position is reached, it is fastened by the first limiting nut and the second limiting nut, thereby limiting and fixing the position of the threaded rod, and further limiting the position of the limiting ring, thus achieving the purpose of conveniently limiting and adjusting the drilling depth.

[0013] 2. By arranging an internal hexagonal groove on the end face of the handle body in the present utility model, it is convenient to rotate the internal hexagonal wrench, thereby achieving the purpose of convenient disassembly and assembly.

[0014] 3. By arranging a plurality of limiting screw holes uniformly at the lower position on the surface of the coupling shaft in the present utility model, the position of the connection sleeve on the surface of the coupling shaft can be installed according to the usage requirements.

[0015] 4. By arranging the protective pad in the present utility model, it can be attached to the contact surface of the workpiece to avoid collision between the limiting ring and the workpiece. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Wherein:

[0017] Figure 1 is a schematic diagram of the structure of the present utility model;

[0018] Figure 2 is a partial enlarged view of point A of the present utility model;

[0019] Figure 3 is a side view schematic diagram of the structure of the present utility model.

[0020] In the drawings, the list of components represented by each reference numeral is as follows:

[0021] 1. Coupling shaft, 2. Drill bit, 3. Connection sleeve, 4. Threaded rod, 5. First limiting nut, 6. Second limiting nut, 7. Limiting ring, 8. Limiting screw hole, 9. Through hole, 10. Limiting bolt, 11. Handle body, 12. Protective pad, 13. Clamping groove. Specific Embodiment

[0022] In the following, embodiments of the adjustable tool shaft assembly of the present utility model will be described with reference to the accompanying drawings.

[0023] Embodiment 1:

[0024] Figures 1-3 An adjustable tool shaft assembly showing an embodiment of the present utility model includes a coupling shaft 1. A drill bit 2 is fixedly connected to one side of the coupling shaft 1. A connecting sleeve 3 is detachably connected to the surface of the coupling shaft 1. Threaded rods 4 penetrate through the interior of the connecting sleeve 3 at an angle of 120 degrees to each other. A limit nut 5 is threadedly connected to the threaded portion at the top of the connecting sleeve 3 through which the threaded rod 4 passes. A limit nut 6 is threadedly connected to the threaded portion at the bottom of the connecting sleeve 3 through which the threaded rod 4 passes. Both the limit nut 5 and the limit nut 6 are in close contact with the connecting sleeve 3. A limit ring 7 is fixedly connected to the bottom of the threaded rod 4. Limit screw holes 8 are provided at positions on the lower part of the surface of the coupling shaft 1 at an angle of 120 degrees to each other. The number of the limit screw holes 8 is multiple, and the multiple limit screw holes 8 are evenly provided at the lower part of the surface of the coupling shaft 1. Through holes 9 are provided at positions on the surface of the connecting sleeve 3 corresponding to the limit screw holes 8. A limit bolt 10 penetrates through the interior of the through hole 9. The limit bolt 10 is threadedly connected to the corresponding limit screw hole 8. A handle body 11 is fixedly connected to the side of the limit bolt 10 away from the through hole 9. An internal hexagonal groove is provided on the end face of the handle body 11. When the limit bolt 10 is threadedly tightened with the limit screw hole 8, the end face of the handle body 11 is located inside the through hole 9. According to the usage requirements, the connecting sleeve 3 is sleeved on the surface of the coupling shaft 1 and then can slide on the surface of the coupling shaft 1. When the through hole 9 is aligned with the corresponding limit screw hole 8, the limit bolt 10 can be rotated to fasten the connecting sleeve 3. Then, according to the drilling depth, the position of the limit ring 7 is slid up and down, so that the limit ring 7 drives the threaded rod 4 to slide inside the connecting sleeve 3. When the required position is reached, the limit nut 5 and the limit nut 6 are used for fastening, so as to limit and fix the position of the threaded rod 4, thereby limiting the position of the limit ring 7, and further achieving the purpose of conveniently limiting and adjusting the drilling depth.

[0025] Embodiment 2:

[0026] Figures 1-3The present utility model shows an adjustable cutter shaft assembly, including a coupling shaft 1. A clamping groove 13 is provided at the upper position on the surface of the coupling shaft 1. The clamping grooves 13 are arranged on the surface of the coupling shaft 1 at an angle of 120 degrees to each other, which can facilitate the connection between the coupling shaft 1 and the drive shaft. A drill bit 2 is fixedly connected to one side of the coupling shaft 1. A connecting sleeve 3 is detachably connected to the surface of the coupling shaft 1. Three threaded rods 4 penetrate through the inside of the connecting sleeve 3 at an angle of 120 degrees to each other. A first limit nut 5 is threadedly connected to the threaded part at the top of the connecting sleeve 3 through which the threaded rod 4 penetrates. A second limit nut 6 is threadedly connected to the threaded part at the bottom of the connecting sleeve 3 through which the threaded rod 4 penetrates. Both the first limit nut 5 and the second limit nut 6 are in close contact with the connecting sleeve 3. A limit ring 7 is fixedly connected to the bottom of the threaded rod 4. A protective pad 12 is fixedly connected to the end face of the limit ring 7 away from the threaded rod 4. By providing the protective pad 12, it can be fitted to the contact surface of the workpiece to avoid collision between the limit ring 7 and the workpiece. Limit screw holes 8 are provided at the lower position on the surface of the coupling shaft 1 at an angle of 120 degrees to each other. Through holes 9 are provided on the surface of the connecting sleeve 3 at positions corresponding to the limit screw holes 8. Limit bolts 10 penetrate through the inside of the through holes 9. The limit bolts 10 are threadedly connected to the corresponding limit screw holes 8.

[0027] Working principle: When the present utility model is in use, according to the usage requirements, the connecting sleeve 3 is sleeved on the surface of the coupling shaft 1 and then can slide on the surface of the coupling shaft 1. When the through hole 9 is aligned with the corresponding limit screw hole 8, the handle body 11 can be rotated by an externally provided internal hexagonal wrench, thereby fastening the connecting sleeve 3. Then, according to the drilling depth, the position of the limit ring 7 is slid up and down, so that the limit ring 7 drives the threaded rod 4 to slide inside the connecting sleeve 3. When the required position is reached, the first limit nut 5 and the second limit nut 6 are rotated threadedly on the surface of the threaded rod 4 to be tightened, so that their contact surfaces are fitted to the connecting sleeve 3, thereby limiting and fixing the position of the threaded rod 4, and further limiting the position of the limit ring 7, thus achieving the purpose of conveniently limiting and adjusting the drilling depth.

Claims

1. An adjustable tool shaft assembly, including a coupling shaft (1), one side of the coupling shaft (1) is fixedly connected with a drill bit (2), characterized in that, A connecting sleeve (3) is detachably connected to the surface of the coupling shaft (1). A threaded rod (4) penetrates through the inside of the connecting sleeve (3) at an angle of 120 degrees to each other. A first limiting nut (5) is threadedly connected to the threaded portion at the top of the connecting sleeve (3) through which the threaded rod (4) passes. A second limiting nut (6) is threadedly connected to the threaded portion at the bottom of the connecting sleeve (3) through which the threaded rod (4) passes. Both the first limiting nut (5) and the second limiting nut (6) are in close contact with the connecting sleeve (3). A limiting ring (7) is fixedly connected to the bottom of the threaded rod (4). Limiting screw holes (8) are provided at positions on the lower part of the surface of the coupling shaft (1) at an angle of 120 degrees to each other. Through holes (9) are provided on the surface of the connecting sleeve (3) at positions corresponding to the limiting screw holes (8). A limiting bolt (10) penetrates through the inside of the through hole (9). The limiting bolt (10) is threadedly connected to the corresponding limiting screw hole (8); A handle body (11) is fixedly connected to the side of the limiting bolt (10) away from the through hole (9). An internal hexagonal groove is provided on the end face of the handle body (11); When the limiting bolt (10) is threadedly tightened with the limiting screw hole (8), the end face of the handle body (11) is located inside the through hole (9); The number of the limiting screw holes (8) is multiple. The multiple limiting screw holes (8) are evenly provided at the lower part of the surface of the coupling shaft (1).

2. The adjustable tool shaft assembly according to claim 1, wherein A protective pad (12) is fixedly connected to the end face of the limiting ring (7) away from the threaded rod (4).

3. The adjustable tool shaft assembly according to claim 1, characterized in that, A clamping groove (13) is provided at the upper part of the surface of the coupling shaft (1). The clamping grooves (13) are provided on the surface of the coupling shaft (1) at an angle of 120 degrees to each other.

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