Drill bit fixture for lathe drilling

Abstract

The utility model relates to the technical field of lathe drilling, and discloses a drill bit fixture for lathe drilling, which comprises a drill bushing and a drill bit, an adapter sleeve is arranged in the drill bushing, one end of the drill bit is positioned in the adapter sleeve, an external thread is arranged at one end of the adapter sleeve, a fastening nut is arranged on the outer side of the external thread, and the other end of the drill bit is positioned in the fastening nut. One end, provided with external threads, of the adapter sleeve protrudes out of one end of the drill sleeve, threaded holes are formed in the outer walls of the two sides of the drill sleeve, locking screws are arranged in the threaded holes, and one ends of the locking screws abut against the outer wall of the adapter sleeve. And meanwhile, the clamping force of the adapter sleeve on the drill bit can be increased, the end of the drill bit can be limited through cooperation of the screw rod and the top plate, the drill bit is prevented from moving during drilling feeding, drilling accuracy is guaranteed, the drill bit does not need to be damaged in the drill bit clamping process of the whole drill bit clamping device, and the integrity and strength of the drill bit are guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to lathe drilling technical field, concretely is a drill chuck for lathe drilling. BACKGROUND

[0002] In the traditional mechanical processing field, the process method for hole processing often adopts a drilling machine, or installs a drill bit on other machine tools to realize, and the lathe drilling is similar to the drilling machine drilling, but the drilling machine is the drill bit rotation, and the lathe is workpiece rotation.

[0003] The existing Chinese patent (CN214237073U) discloses a drill chuck for lathe drilling, which comprises a shell and a drill bit. A clamping groove is formed in the shell. The drill bit is matched with the clamping groove and movably connected. A circular fixing groove is formed in the drill bit. Two clamping bolt grooves are symmetrically formed in the shell on both sides of the clamping groove. A semicircular fixing clamping bolt sleeve one and a semicircular fixing clamping bolt sleeve two are movably arranged in the clamping bolt grooves. The semicircular fixing clamping bolt sleeve one and the semicircular fixing clamping bolt sleeve two form a circular clamping bolt sleeve and are matched with the circular fixing groove and movably connected. A spring seat one is fixedly installed in the clamping bolt groove. The drill chuck is convenient to adjust, install and disassemble. In addition, the drill bit is stably clamped by the semicircular fixing clamping bolt sleeve one and the semicircular fixing clamping bolt sleeve two, which makes the drill bit more stable during work.

[0004] In the above technical solution, when fixing the drill bit, a circular fixing groove needs to be formed on the drill bit, which will damage the overall strength of the drill bit and affect the service life of the drill bit. Therefore, a drill chuck for lathe drilling is provided, which can fix the drill bit for lathe drilling without damaging the drill bit. TECHNICAL SOLUTION

[0005] The utility model aims at providing a drill chuck for lathe drilling to solve the problems in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a drill chuck for lathe drilling, comprising: a drill sleeve and a drill bit, the drill sleeve is internally provided with a tight sleeve, one end of the drill bit is located in the tight sleeve, one end of the tight sleeve is provided with an external thread, the external thread is provided with a tight nut outside, the tight nut is in abutment with one end of the drill sleeve, the end of the tight sleeve provided with the external thread protrudes from one end of the drill sleeve, the outer wall of the drill sleeve on both sides is provided with a threaded hole, the threaded hole is provided with a locking screw, one end of the locking screw is in abutement with the outer wall of the tight sleeve.

[0007] Further, the cross section of the tight sleeve is C-shaped, and the outer wall of the tight sleeve is in abutement with the inner wall of the drill sleeve.

[0008] Further, the drill sleeve is rectangular, and a through hole for placing the clamping sleeve is formed in the center of the drill sleeve.

[0009] Further, an end cover is arranged at one end of the drill sleeve away from the drill bit, and a screw rod is arranged in the center of the end cover.

[0010] Further, an internal thread matched with the screw rod is formed in the center of the end cover.

[0011] Further, a top plate is arranged at one end of the screw rod, and the top plate is in abutment with one end of the drill bit; a lock nut is arranged outside the screw rod, and one side of the lock nut is in abutment with one side of the end cover.

[0012] Compared with the prior art, the drill bit clamp for lathe drilling has the following beneficial effects:

[0013] The clamping sleeve, the clamping nut and the screw rod are arranged, so that the drill bit is fixed in the drill sleeve through the clamping sleeve when the drill bit clamp for lathe drilling is used; the clamping sleeve is C-shaped, can clamp the end of the drill bit, and fix the drill bit in the drill sleeve; the external thread and the clamping nut are arranged at one end of the clamping sleeve, so that the forward and backward movement of the clamping sleeve is limited; the locking screw can limit the rotation of the clamping sleeve, and also can increase the clamping force of the clamping sleeve on the drill bit; the end of the drill bit is limited through the cooperation of the screw rod and the top plate, so that the movement of the drill bit is avoided when drilling, and the drilling accuracy is ensured; the clamping device of the whole drill bit does not need to damage the drill bit during clamping the drill bit, so that the integrity and strength of the drill bit are ensured; finally, the square drill sleeve and the components thereof are fixed on the tool rest of the lathe through the screw on the tool rest, so that the subsequent drilling is realized.

[0014] The parts not involved in the device are the same as or can be realized by the prior art. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 FIG. 1 is a perspective view of the drill bit clamp for lathe drilling of the utility model;

[0016] Figure 2 FIG. 2 is a perspective view of another angle of the drill bit clamp for lathe drilling of the utility model;

[0017] Figure 3 FIG. 3 is a top view of the drill bit clamp for lathe drilling of the utility model;

[0018] Figure 4 FIG. 4 is a main sectional view of the drill bit clamp for lathe drilling of the utility model.

[0019] In the figure: 1, drill bushing; 2, tight bushing; 3, external thread; 4, tight nut; 5, locking screw; 6, end cover; 7, screw rod; 8, lock nut; 9, drill bit; 10, top plate. DETAILED DESCRIPTION

[0020] 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, rather than all the embodiments.

[0021] Please refer to Figures 1-4 The utility model provides a kind of technical scheme: a drill chuck for lathe drilling, comprising: drill bushing 1 and drill bit 9, drill bushing 1: as the main part of whole chuck, drill bushing 1 provides a fixed basis for drill bit 9 and tight bushing 2. Ensure the stability and accuracy of drill bit 9 during installation and use. The design of drill bushing 1 allows it to cooperate with the screw on the lathe tool rest, so that the whole chuck is fixed on the tool rest, facilitating subsequent drilling operation. Drill bushing 1 is internally provided with tight bushing 2, one end of drill bit 9 is located inside tight bushing 2, tight bushing 2 is C-shaped in cross section, and the outer wall of tight bushing 2 abuts against the inner wall of drill bushing 1. Tight bushing 2 is designed in C shape to clamp the end of drill bit 9. Through its C-shaped structure, tight bushing 2 can tightly wrap the end of drill bit 9, providing sufficient clamping force to prevent the drill bit from moving or falling off during drilling. This design not only ensures the stability of the drill bit, but also avoids damaging the drill bit.

[0022] One end of tight bushing 2 is provided with external thread 3, and external thread 3 is provided with tight nut 4 outside, and tight nut 4 abuts against one end of drill bushing 1, and the end of tight bushing 2 provided with external thread 3 protrudes from one end of drill bushing 1 and cooperates with external thread 3 on tight bushing 2 to fix the position of tight bushing 2. By rotating tight nut 4, the compression degree of tight bushing 2 can be adjusted, so as to realize the adjustment of the clamping force of drill bit 9. This design not only improves the stability of the drill bit, but also makes the clamping operation of the chuck more flexible and convenient.

[0023] Threaded holes are provided on the outer walls of drill bushing 1, locking screws 5 are arranged in the threaded holes, and one end of locking screw 5 abuts against the outer wall of tight bushing 2. Locking screw 5 is arranged in the threaded hole on the outer wall of drill bushing 1 to limit the rotation of tight bushing 2. One end of locking screw 5 abuts against the outer wall of tight bushing 2 to prevent tight bushing 2 from rotating during drilling. This design not only ensures the stability of the drill bit, but also avoids the weakening or failure of clamping force caused by the rotation of tight bushing 2.

[0024] The drill sleeve 1 is rectangular, and a through hole for placing the tightening sleeve 2 is arranged in the center of the drill sleeve 1. The drill sleeve 1 is designed to be rectangular, and this shape design makes the installation of the drill sleeve 1 on the lathe tool holder more stable. The rectangular structure can provide a larger contact area, thereby increasing the friction between the lathe tool holder, preventing displacement caused by vibration or torque during drilling. The through hole arranged in the center of the drill sleeve 1 is designed to place the tightening sleeve 2. The size and shape of this through hole need to match the tightening sleeve 2 to ensure that the tightening sleeve 2 can be smoothly inserted and fixed inside the drill sleeve 1.

[0025] The end cap 6 is provided at the end of the drill sleeve 1 away from the drill bit 9, and a screw rod 7 is arranged in the center of the end cap 6. One end of the screw rod 7 abuts one end of the drill bit 9. The abutment of the screw rod 7 and one end of the drill bit 9 plays a key role in limiting and supporting. During drilling, the drill bit 9 is subjected to axial force and torque, while the screw rod 7 provides a stable support point to prevent the drill bit 9 from moving or deviating in the drilling direction. This design helps to improve the accuracy and stability of drilling. The end cap 6 is provided with an internal thread in the center, which cooperates with the screw rod 7. One end of the screw rod 7 is rotatably provided with a top plate 10, one end of which abuts one end of the drill bit 9. A lock nut 8 is arranged outside the screw rod 7, and one side of the lock nut 8 abuts one side of the end cap 6. The top plate 10 is installed at one end of the screw rod 7 and can move with the rotation of the screw rod 7. The design of the top plate 10 should ensure that it has sufficient rigidity and flatness to tightly contact one end of the drill bit 9 and provide stable support. The lock nut 8 is installed outside the screw rod 7 and tightly abuts one side of the end cap 6. The design of the lock nut 8 usually has a special locking structure, such as deformation of the thread, application of locking agent or elastic locking elements, to prevent loosening under the action of vibration or torque.

[0026] In use, the drill bit 9 is fixed in the drill sleeve 1 by the tightening sleeve 2. The tightening sleeve 2 is C-shaped and can clamp the end of the drill bit 9 to fix it inside the drill sleeve 1. An external thread 3 and a tightening nut 4 are arranged at one end of the tightening sleeve 2 to limit the movement of the tightening sleeve 2 in the forward and backward directions. A locking screw 5 can limit the rotation of the tightening sleeve 2 and also increase the clamping force of the tightening sleeve 2 on the drill bit 9. The cooperation of the screw rod 7 and the top plate 10 can limit the end of the drill bit 9, avoiding movement of the drill bit during drilling to ensure drilling accuracy. The entire drill bit 9 clamping device does not need to damage the drill bit 9 during clamping, ensuring the integrity and strength of the drill bit 9. Finally, the square drill sleeve 1 and its components are fixed on the tool holder of the lathe by screws, realizing subsequent drilling.

[0027] Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor belong to the scope of protection of the present application.

Claims

1. A drill holder for a lathe drill, comprising: Drill sleeve (1) and drill bit (9), characterized in that: the drill sleeve (1) is internally provided with a tight sleeve (2), one end of the drill bit (9) is located in the tight sleeve (2), one end of the tight sleeve (2) is provided with an external thread (3), the outer side of the external thread (3) is provided with a tight nut (4), the tight nut (4) is in abutment with one end of the drill sleeve (1), the end of the tight sleeve (2) provided with the external thread (3) protrudes from one end of the drill sleeve (1), the outer wall of the drill sleeve (1) is provided with a threaded hole, the threaded hole is provided with a locking screw (5), one end of the locking screw (5) is in abutment with the outer wall of the tight sleeve (2).

2. The drill chuck for a lathe according to claim 1, wherein: The cross section of the tight sleeve (2) is C-shaped, and the outer wall of the tight sleeve (2) is in abutment with the inner wall of the drill sleeve (1).

3. The drill chuck for a lathe according to claim 2, wherein: The drill sleeve (1) is rectangular, and a through hole for placing the tight sleeve (2) is formed in the center of the drill sleeve (1).

4. The drill chuck for a lathe according to claim 1, wherein: The end of the drill sleeve (1) away from the drill bit (9) is provided with an end cover (6), the center of the end cover (6) is provided with a screw rod (7), one end of the screw rod (7) is in abutment with one end of the drill bit (9).

5. The drill chuck for a lathe according to claim 4, wherein: The center of the end cover (6) is provided with an internal thread matched with the screw rod (7).

6. The drill chuck for a lathe according to claim 5, wherein: One end of the screw rod (7) is rotatably provided with a top plate (10), one end of the top plate (10) is in abutment with one end of the drill bit (9), the outer side of the screw rod (7) is provided with a lock nut (8), one side of the lock nut (8) is in abutment with one side of the end cover (6).

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