Self-locking and self-tightening drill chuck

Abstract

The invention provides a self-locking and self-tightening drill chuck, which relates to the technical field of drilling machine tools and comprises a drilling machine connecting mechanism, a drill bit clamping mechanism, a synchronous pushing mechanism, an adjusting and self-locking mechanism and a position control mechanism, the drill bit clamping mechanism is mounted on the drilling machine connecting mechanism; the synchronous pushing mechanism is mounted on the drilling machine connecting mechanism; the adjusting self-locking mechanism is installed on the synchronous pushing mechanism, the adjusting self-locking mechanism is used for adjusting the synchronous pushing mechanism, and the adjusting self-locking mechanism is further used for positioning the adjusted synchronous pushing mechanism; the position control mechanisms are arranged in a row, and the position control mechanisms in the row are installed on the drilling machine connecting mechanism and used for controlling the installation positions of the drill bits. The drilling machine connecting sleeve and the drilling machine output shaft can be conveniently and rapidly connected or detached by a worker through the two connecting pin shafts; the problem that the replacement efficiency of the drill chuck is affected due to the fact that connection or replacement of the drill chuck and a drilling machine is troublesome is solved.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of drill chuck, more particularly, relates to a self-locking and self-tightening drill chuck. BACKGROUND

[0002] The drill chuck of the drill press is a key component for clamping drill bits or cylindrical handle tools in machine tool accessories, and its core function is to ensure the stability and machining accuracy of drilling operation through high-precision clamping. The drill chuck is widely used in the field of mechanical manufacturing and is an indispensable component of drill press equipment.

[0003] The currently used drill chuck still has the following problems: 1. The drill chuck is relatively troublesome to connect or replace with the drill press, affecting the replacement efficiency of the drill chuck; 2. It needs to be rotated for many turns when clamping and disassembling the drill bit, which cannot realize the quick clamping and disassembly of the drill bit, affecting the replacement speed of the drill bit; 3. The lengths of drill bits of different diameters are different, which makes it difficult for workers to accurately control the clamping length of the drill bit. SUMMARY

[0004] The disclosed embodiment relates to a self-locking and self-tightening drill chuck, which has a drill press connecting mechanism, a drill bit clamping mechanism, a synchronous pushing mechanism, an adjusting and locking mechanism and a position control mechanism. The drill press connecting sleeve can be quickly connected or disassembled with the drill press output shaft through two connecting pins. The synchronous pushing frame moves inward under the action of three spiral springs b, pushing three rectangular guide rods, so that the three drill bit clamping blocks contact the drill bit, realizing automatic clamping of the drill bit. When the diameter of the drill bit increases, the length of the drill bit in the drill bit positioning frame becomes longer, and when the diameter of the drill bit decreases, the length of the drill bit in the drill bit positioning frame becomes shorter. The problems of the drill chuck being relatively troublesome to connect or replace with the drill press, the drill bit needing to be rotated for many turns when clamping and disassembling the drill bit, and the worker being unable to accurately control the clamping length of the drill bit are solved.

[0005] The present application provides a self-locking and self-tightening drill chuck, comprising: a drill press connecting mechanism, a drill bit clamping mechanism, a synchronous pushing mechanism, an adjusting and locking mechanism and a position control mechanism; the drill bit clamping mechanism is installed on the drill press connecting mechanism; the synchronous pushing mechanism is installed on the drill press connecting mechanism, and is used to drive the drill bit clamping mechanism; the adjusting and locking mechanism is installed on the synchronous pushing mechanism, and is used to adjust the synchronous pushing mechanism, and also used to position the adjusted synchronous pushing mechanism; the position control mechanism is provided in one row, and one row of position control mechanisms is installed on the drill press connecting mechanism, and is used to control the installation position of the drill bit.

[0006] In at least some embodiments, the drill press connecting mechanism comprises: a drill bit positioning frame and a drill press connecting sleeve; the outer wall of the drill bit positioning frame is provided with a row of inclined self-locking grooves, and the inner part of the drill bit positioning frame is provided with a row of annular positioning grooves; the drill press connecting sleeve is fixedly installed on the top of the drill bit positioning frame.

[0007] In at least some embodiments, the drill press connecting mechanism further comprises: connecting pin shafts and positioning tension springs a; the connecting pin shafts are provided with two, and the two connecting pin shafts are slidingly installed on the drill press connecting sleeve; the positioning tension springs a are provided with two, and the two positioning tension springs a are sleeved on the two connecting pin shafts; the inner ends of the two positioning tension springs a are fixedly connected with the drill press connecting sleeve, and the outer ends of the two positioning tension springs a are fixedly connected with the two connecting pin shafts.

[0008] In at least some embodiments, the drill bit clamping mechanism comprises: rectangular guide rods and drill bit clamping blocks; the rectangular guide rods are provided with three, and the three rectangular guide rods are slidingly installed on the drill bit positioning frame; the drill bit clamping blocks are provided with three, and the three drill bit clamping blocks are fixedly installed on the inner side of the three rectangular guide rods.

[0009] In at least some embodiments, the drill bit clamping mechanism further comprises: circular limiting rings a and spiral springs a; the circular limiting rings a are provided with three, and the three circular limiting rings a are fixedly installed on the outside of the three rectangular guide rods; the spiral springs a are provided with three, and the three spiral springs a are sleeved on the outside of the three rectangular guide rods, and the three spiral springs a are located between the drill bit positioning frame and the three circular limiting rings a.

[0010] In at least some embodiments, the synchronous pushing mechanism comprises: a mounting guide frame, circular guide shafts and a circular mounting ring; the mounting guide frame is fixedly installed on the outside of the drill bit positioning frame; the circular guide shafts are provided with three, and the three circular guide shafts are slidingly installed on the mounting guide frame; the circular mounting ring is slidingly installed on the outside of the drill bit positioning frame, and the circular mounting ring is further fixedly connected with the three circular guide shafts.

[0011] In at least some embodiments, the synchronous pushing mechanism further comprises: a synchronous pushing frame, circular limiting rings b and spiral springs b; the synchronous pushing frame is fixedly installed on the bottom of the circular mounting ring, and the synchronous pushing frame further contacts with the outer ends of the three rectangular guide rods; the circular limiting rings b are provided with three, and the three circular limiting rings b are fixedly installed on the top ends of the three circular guide shafts; the spiral springs b are provided with three, and the three spiral springs b are sleeved on the outside of the three circular guide shafts, and the three spiral springs b are located between the mounting guide frame and the circular mounting ring.

[0012] In at least some embodiments, the adjusting self-locking mechanism comprises: a U-shaped mounting frame, an adjusting self-locking frame and a positioning tension spring b; the U-shaped mounting frame is fixedly installed at the bottom of the circular mounting ring; the adjusting self-locking frame is slidingly installed on the U-shaped mounting frame and the circular mounting ring, and the inner end of the adjusting self-locking frame is matched with an array of inclined self-locking grooves, and the inner end of the adjusting self-locking frame is inserted into the corresponding inclined self-locking groove; the positioning tension spring b is provided with two ends fixedly connected with the U-shaped mounting frame and the adjusting self-locking frame.

[0013] In at least some embodiments, the position control mechanism comprises: a position control rod and a size marker disc; the position control rod is slidingly installed on the drill bit positioning frame; the size marker disc is fixedly installed at the outer end of the position control rod.

[0014] In at least some embodiments, the position control mechanism further comprises: a solid sphere and a spiral spring c; the solid sphere is provided with four, and the four solid spheres are slidingly installed inside the position control rod, and two of them are inserted into the annular positioning groove; the spiral spring c is provided with two, and the two spiral springs c are located between the four solid spheres.

[0015] Compared with the prior art, the present application has the following beneficial effects: 1、The present application facilitates the quick connection or disassembly of the drill press connection sleeve and the drill press output shaft by the two connecting pin shafts; the two positioning tension springs a provide elastic positioning for the two connecting pin shafts, so that the two connecting pin shafts will only slide outward under stress.

[0016] 2、When the worker slightly pulls the adjusting self-locking frame outward and then moves the adjusting self-locking frame upward, the circular mounting ring drives the synchronous pushing frame to move upward; when the circular mounting ring drives the synchronous pushing frame to move upward, the three drill bit clamping blocks automatically move outward under the action of the three spiral springs a, which is beneficial for the placement and removal of the drill bit; In addition, when the worker releases the adjusting self-locking frame, the synchronous pushing frame pushes the three rectangular guide rods to move inward simultaneously under the action of the three spiral springs b, so that the three drill bit clamping blocks contact the drill bit, realizing the automatic clamping of the drill bit; the array of inclined self-locking grooves and the adjusting self-locking frame provide automatic locking for the moved circular mounting ring, so that the drill bit can always be in a stable state after clamping.

[0017] 3. This invention allows workers to easily move the corresponding position control rod according to the drill bit diameter using a size marking disc. The position control rod limits the installation position of the drill bit; when the drill bit diameter increases, the length of the drill bit in the drill bit positioning frame increases, and when the drill bit diameter decreases, the length of the drill bit in the drill bit positioning frame decreases. The four solid spheres and two helical springs (c) limit the position control rod, ensuring that it only slides when force is applied. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings of the embodiments will be briefly described below.

[0019] The accompanying drawings described below are only related to some embodiments of the invention and are not intended to limit the invention.

[0020] In the attached diagram: Figure 1 A three-dimensional structural schematic diagram of the present invention is shown; Figure 2 The present invention is shown. Figure 1 A schematic diagram of the bottom view structure; Figure 3 A schematic diagram of the structure of the drill bit positioning frame and drill bit clamping mechanism of the present invention is shown; Figure 4 A schematic diagram of the synchronous driving mechanism of the present invention is shown; Figure 5 The present invention is shown. Figure 2 A magnified schematic diagram of a portion of region A in the middle; Figure 6 The present invention is shown. Figure 2 A magnified schematic diagram of a portion of region B in the middle; Figure 7 The present invention is shown. Figure 1 A schematic diagram of the structure from the rear side view; Figure 8 The present invention is shown. Figure 7 A magnified schematic diagram of a portion of region C in the middle; Figure 9 The present invention is shown. Figure 1 A schematic diagram of the central cross-section structure; Figure 10 The present invention is shown. Figure 9 A magnified schematic diagram of the structure of region D in the middle.

[0021] List of reference numerals in the attached diagram: 100. Drill press connecting mechanism; 101. Drill bit positioning frame; 1011. Inclined self-locking groove; 1012. Annular positioning groove; 102. Drill press connecting sleeve; 103. Connecting pin; 104. Positioning tension spring a; 200, drill chuck mechanism; 201, rectangular guide rod; 202, drill chuck block; 203, circular limiting ring a; 204, spiral spring a; 300, synchronous pushing mechanism; 301, mounting guide frame; 302, circular guide shaft; 303, circular mounting ring; 304, synchronous pushing frame; 305, circular limiting ring b; 306, spiral spring b; 400, adjusting self-locking mechanism; 401, U-shaped mounting frame; 402, adjusting self-locking frame; 403, positioning tension spring b; 500, position control mechanism; 501, position control rod; 502, size marker disc; 503, solid sphere; 504, spiral spring c. DETAILED DESCRIPTION

[0022] In order to make the purpose, scheme and advantages of the technical solutions of the present application clearer, the technical solutions of the embodiments of the present application will be described clearly and completely below in combination with the drawings of the specific embodiments of the present application. Unless otherwise specified, the terms used herein have the meanings commonly used in the art. The same reference numerals in the drawings represent the same components.

[0023] Embodiment: Please refer to Figures 1 to 10 As shown in the drawings: the present application provides a self-locking and self-tightening drill chuck, comprising: a drill press connecting mechanism 100, a drill chuck mechanism 200, a synchronous pushing mechanism 300, an adjusting self-locking mechanism 400 and a position control mechanism 500; the drill chuck mechanism 200 is installed on the drill press connecting mechanism 100; the synchronous pushing mechanism 300 is installed on the drill press connecting mechanism 100, and the synchronous pushing mechanism 300 is used to drive the drill chuck mechanism 200; the adjusting self-locking mechanism 400 is installed on the synchronous pushing mechanism 300, the adjusting self-locking mechanism 400 is used to adjust the synchronous pushing mechanism 300, and the adjusting self-locking mechanism 400 is also used to position the adjusted synchronous pushing mechanism 300; the position control mechanism 500 is provided in one row, and the row of position control mechanisms 500 is installed on the drill press connecting mechanism 100, and the row of position control mechanisms 500 is used to control the installation position of the drill bit.

[0024] In the embodiments of the present disclosure, as Figure 1 and Figure 2As shown, the drill press connecting mechanism 100 comprises: a drill bit positioning frame 101 and a drill press connecting sleeve 102; the outer wall of the drill bit positioning frame 101 is provided with a row of inclined self-locking grooves 1011, and the inside of the drill bit positioning frame 101 is provided with a row of annular positioning grooves 1012; the drill press connecting sleeve 102 is fixedly installed on the top of the drill bit positioning frame 101; the drill press connecting mechanism 100 further comprises: a connecting pin shaft 103 and a positioning tension spring a 104; the connecting pin shaft 103 is provided with two, and the two connecting pin shafts 103 are slidingly installed on the drill press connecting sleeve 102; the positioning tension spring a 104 is provided with two, and the two positioning tension springs a 104 are sleeved on the two connecting pin shafts 103; the inner ends of the two positioning tension springs a 104 are fixedly connected with the drill press connecting sleeve 102, and the outer ends of the two positioning tension springs a 104 are fixedly connected with the two connecting pin shafts 103; wherein the tension of the two positioning tension springs a 104 is far greater than the centrifugal force generated during work, so as to ensure that the two connecting pin shafts 103 will not move after being connected with the output shaft of the drill press; The specific role is: because the drill press connecting sleeve 102 is fixedly installed on the top of the drill bit positioning frame 101, and the two connecting pin shafts 103 are slidingly installed on the drill press connecting sleeve 102, it is convenient for workers to quickly connect or disassemble the drill press connecting sleeve 102 and the drill press output shaft through the two connecting pin shafts 103; and because the two positioning tension springs a 104 are sleeved on the two connecting pin shafts 103, the inner ends of the two positioning tension springs a 104 are fixedly connected with the drill press connecting sleeve 102, and the outer ends of the two positioning tension springs a 104 are fixedly connected with the two connecting pin shafts 103, the two connecting pin shafts 103 are elastically positioned, so that the two connecting pin shafts 103 will only slide outward under stress.

[0025] In the embodiment of the present disclosure, as shown in the figure, Figures 3 to 6 The drill bit clamping mechanism 200 comprises: a rectangular guide rod 201 and a drill bit clamping block 202; the rectangular guide rod 201 is provided with three, and the three rectangular guide rods 201 are slidingly installed on the drill bit positioning frame 101; the drill bit clamping block 202 is provided with three, and the three drill bit clamping blocks 202 are fixedly installed on the inner side of the three rectangular guide rods 201; the drill bit clamping mechanism 200 further comprises: a circular limiting ring a 203 and a spiral spring a 204; the circular limiting ring a 203 is provided with three, and the three circular limiting rings a 203 are fixedly installed on the outside of the three rectangular guide rods 201; the spiral spring a 204 is provided with three, and the three spiral springs a 204 are sleeved on the outside of the three rectangular guide rods 201, and the three spiral springs a 204 are located between the drill bit positioning frame 101 and the three circular limiting rings a 203; The synchronous pushing mechanism 300 comprises a mounting guide frame 301, a circular guide shaft 302 and a circular mounting ring 303; the mounting guide frame 301 is fixedly installed outside the drill bit positioning frame 101; the circular guide shaft 302 is provided with three, and the three circular guide shafts 302 are slidingly installed on the mounting guide frame 301; the circular mounting ring 303 is slidingly installed outside the drill bit positioning frame 101, and the circular mounting ring 303 is further fixedly connected with the three circular guide shafts 302; the synchronous pushing mechanism 300 further comprises a synchronous pushing frame 304, a circular limiting ring b 305 and a spiral spring b 306; the synchronous pushing frame 304 is fixedly installed at the bottom of the circular mounting ring 303, and the synchronous pushing frame 304 further contacts the outer ends of the three rectangular guide rods 201; the circular limiting ring b 305 is provided with three, and the three circular limiting rings b 305 are fixedly installed at the top ends of the three circular guide shafts 302; the spiral spring b 306 is provided with three, and the three spiral springs b 306 are sleeved outside the three circular guide shafts 302 and located between the mounting guide frame 301 and the circular mounting ring 303; The adjusting self-locking mechanism 400 comprises a U-shaped mounting frame 401, an adjusting self-locking frame 402 and a positioning tension spring b 403; the U-shaped mounting frame 401 is fixedly installed at the bottom of the circular mounting ring 303; the adjusting self-locking frame 402 is slidingly installed on the U-shaped mounting frame 401 and the circular mounting ring 303, the inner end of the adjusting self-locking frame 402 matches with a row of inclined self-locking grooves 1011, and the inner end of the adjusting self-locking frame 402 is inserted into the corresponding inclined self-locking groove 1011; the positioning tension spring b 403 is provided with two, and the two ends of the two positioning tension springs b 403 are fixedly connected with the U-shaped mounting frame 401 and the adjusting self-locking frame 402; wherein the tension of the two positioning tension springs b 403 is far greater than the centrifugal force generated during work, so as to ensure that the adjusting self-locking frame 402 does not move after being connected with the corresponding inclined self-locking groove 1011; The specific action is that, since the U-shaped mounting frame 401 is fixedly installed at the bottom of the circular mounting ring 303, and the adjusting self-locking frame 402 is slidingly installed on the U-shaped mounting frame 401 and the circular mounting ring 303, when the staff slightly pulls the adjusting self-locking frame 402 outward and then moves the adjusting self-locking frame 402 upward, the circular mounting ring 303 drives the synchronous pushing frame 304 to move upward; since the three spiral springs a 204 are sleeved outside the three rectangular guide rods 201, and the three spiral springs a 204 are located between the drill bit positioning frame 101 and the three circular limiting rings a 203, when the circular mounting ring 303 drives the synchronous pushing frame 304 to move upward, the three drill bit clamping blocks 202 automatically move outward under the action of the three spiral springs a 204, which is beneficial to the placement and removal of the drill bit; In addition, since the three spiral springs b306 are sleeved outside the three circular guide shafts 302 and are located between the mounting guide frame 301 and the circular mounting ring 303, when the worker loosens the adjusting self-locking frame 402, the synchronous pushing frame 304 pushes the three rectangular guide rods 201 to move inward simultaneously under the action of the three spiral springs b306, so that the three drill chuck blocks 202 contact the drill, and automatic clamping of the drill is realized; in addition, the outer wall of the drill positioning frame 101 is provided with a row of inclined self-locking grooves 1011, the inner end of the adjusting self-locking frame 402 is matched with the row of inclined self-locking grooves 1011, and the two ends of the two positioning tension springs b403 are fixedly connected with the U-shaped mounting frame 401 and the adjusting self-locking frame 402, so as to automatically lock the moved circular mounting ring 303, so that the drill can be in a stable state after being clamped.

[0026] As shown in FIGS. 1, 2 and 3, the position control mechanism 500 includes a position control rod 501 and a size marker disc 502; the position control rod 501 is slidingly installed on the drill positioning frame 101; the size marker disc 502 is fixedly installed at the outer end of the position control rod 501; the position control mechanism 500 further includes four solid spheres 503 and two spiral springs c504; the four solid spheres 503 are slidingly installed inside the position control rod 501, and two of the four solid spheres 503 are inserted into the annular positioning groove 1012; the two spiral springs c504 are located between the four solid spheres 503. Figure 8 As shown in FIGS. 1, 2 and 3, the position control mechanism 500 includes a position control rod 501 and a size marker disc 502; the position control rod 501 is slidingly installed on the drill positioning frame 101; the size marker disc 502 is fixedly installed at the outer end of the position control rod 501; the position control mechanism 500 further includes four solid spheres 503 and two spiral springs c504; the four solid spheres 503 are slidingly installed inside the position control rod 501, and two of the four solid spheres 503 are inserted into the annular positioning groove 1012; the two spiral springs c504 are located between the four solid spheres 503. Figure 10 As shown in FIGS. 1, 2 and 3, the position control mechanism 500 includes a position control rod 501 and a size marker disc 502; the position control rod 501 is slidingly installed on the drill positioning frame 101; the size marker disc 502 is fixedly installed at the outer end of the position control rod 501; the position control mechanism 500 further includes four solid spheres 503 and two spiral springs c504; the four solid spheres 503 are slidingly installed inside the position control rod 501, and two of the four solid spheres 503 are inserted into the annular positioning groove 1012; the two spiral springs c504 are located between the four solid spheres 503. As shown in FIGS. 1, 2 and 3, the position control mechanism 500 includes a position control rod 501 and a size marker disc 502; the position control rod 501 is slidingly installed on the drill positioning frame 101; the size marker disc 502 is fixedly installed at the outer end of the position control rod 501; the position control mechanism 500 further includes four solid spheres 503 and two spiral springs c504; the four solid spheres 503 are slidingly installed inside the position control rod 501, and two of the four solid spheres 503 are inserted into the annular positioning groove 1012; the two spiral springs c504 are located between the four solid spheres 503.

[0027] The specific use and effect of the embodiment are as follows: When the present application is used, first, the worker pre-drills a hole on the output shaft of the drill press, the hole diameter is the same as the diameter of the connecting pin shaft 103, then pulls out the two connecting pin shafts 103, then inserts the drill press output shaft into the drill press connecting sleeve 102, then loosens the two connecting pin shafts 103, and inserts the two connecting pin shafts 103 into the round hole of the drill press output shaft; the worker can quickly connect or disassemble the drill press connecting sleeve 102 and the drill press output shaft through the two connecting pin shafts 103; the two positioning tension springs a 104 play a role in elastically positioning the two connecting pin shafts 103, so that the two connecting pin shafts 103 can only slide outward under force; according to the diameter of the drill bit to be clamped, move the corresponding position control rod 501 through the size marker disc 502, the position control rod 501 limits the installation position of the drill bit, when the diameter of the drill bit increases, the length of the drill bit in the drill bit positioning frame 101 becomes longer, when the diameter of the drill bit decreases, the length of the drill bit in the drill bit positioning frame 101 becomes shorter; the four solid spheres 503 and the two spiral springs c 504 limit the position of the position control rod 501, so that the position control rod 501 can only slide under force; when the drill bit needs to be clamped, the worker slightly pulls the adjustment self-locking frame 402 outward, then moves the adjustment self-locking frame 402 upward, the circular mounting ring 303 drives the synchronous pusher 304 to move upward, then places the drill bit to be clamped between the three drill bit clamping blocks 202; when the circular mounting ring 303 drives the synchronous pusher 304 to move upward, the three drill bit clamping blocks 202 automatically move outward under the action of the three spiral springs a 204, which is beneficial to the placement of the drill bit; when the worker loosens the adjustment self-locking frame 402, the synchronous pusher 304 pushes the three rectangular guide rods 201 to move inward at the same time under the action of the three spiral springs b 306, so that the three drill bit clamping blocks 202 contact the drill bit, realizing automatic clamping of the drill bit; the arrangement of the row of inclined self-locking grooves 1011 and the adjustment self-locking frame 402 automatically locks the moved circular mounting ring 303, so that the drill bit can always be in a stable state after being clamped.

[0028] In this article, the following points need attention: 1. The drawings of the embodiments of the present disclosure only involve the structures involved in the embodiments of the present disclosure, and other structures can refer to the usual design.

[0029] 2. In the case of no conflict, the embodiments of the present disclosure and the features in the embodiments can be combined to obtain new embodiments.

[0030] The above is only a specific implementation of the present disclosure, but the protection scope of the present disclosure is not limited thereto, any person skilled in the art can easily think of changes or replacements within the technical scope disclosed by the present disclosure, which should be covered within the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure should be subject to the protection scope of the claims.

Claims

1. A self-locking self-tightening drill chuck comprising: The drilling machine connecting mechanism (100), the drill chucking mechanism (200), the synchronous pushing mechanism (300), the adjusting self-locking mechanism (400) and the position control mechanism (500); characterized in that the drill chucking mechanism (200) is installed on the drilling machine connecting mechanism (100); the synchronous pushing mechanism (300) is installed on the drilling machine connecting mechanism (100), and the synchronous pushing mechanism (300) is used for driving the drill chucking mechanism (200); the adjusting self-locking mechanism (400) is installed on the synchronous pushing mechanism (300), and the adjusting self-locking mechanism (400) is used for adjusting the synchronous pushing mechanism (300) and positioning the adjusted synchronous pushing mechanism (300); and the position control mechanism (500) is arranged in one row, and the position control mechanism (500) in one row is installed on the drilling machine connecting mechanism (100) and used for controlling the installation position of the drill.

2. The self-locking self-tightening drill chuck according to claim 1, wherein, The drilling machine connecting mechanism (100) comprises a drill positioning frame (101) and a drilling machine connecting sleeve (102); an outer wall of the drill positioning frame (101) is provided with an inclined self-locking groove (1011), and an inner part of the drill positioning frame (101) is provided with an annular positioning groove (1012); and the drilling machine connecting sleeve (102) is fixedly installed on the top of the drill positioning frame (101).

3. The self-locking self-tightening drill chuck according to claim 2, wherein, The drilling machine connecting mechanism (100) further comprises a connecting pin shaft (103) and a positioning tension spring a (104); the connecting pin shaft (103) is arranged in two, and the two connecting pin shafts (103) are slidingly installed on the drilling machine connecting sleeve (102); and the positioning tension spring a (104) is arranged in two, and the two positioning tension springs a (104) are sleeved on the two connecting pin shafts (103); inner ends of the two positioning tension springs a (104) are fixedly connected with the drilling machine connecting sleeve (102), and outer ends of the two positioning tension springs a (104) are fixedly connected with the two connecting pin shafts (103).

4. The self-locking self-tightening drill chuck as claimed in claim 2, wherein The drill chucking mechanism (200) comprises a rectangular guide rod (201) and a drill chucking block (202); the rectangular guide rod (201) is arranged in three, and the three rectangular guide rods (201) are slidingly installed on the drill positioning frame (101); and the drill chucking block (202) is arranged in three, and the three drill chucking blocks (202) are fixedly installed on the inner sides of the three rectangular guide rods (201).

5. The self-locking self-tightening drill chuck as claimed in claim 4, wherein The drill chucking mechanism (200) further comprises a circular limiting ring a (203) and a spiral spring a (204); the circular limiting ring a (203) is arranged in three, and the three circular limiting rings a (203) are fixedly installed on the outside of the three rectangular guide rods (201); and the spiral spring a (204) is arranged in three, and the three spiral springs a (204) are sleeved on the outside of the three rectangular guide rods (201) and located between the drill positioning frame (101) and the three circular limiting rings a (203).

6. The self-locking self-tightening drill chuck of claim 4, wherein, The synchronous pushing mechanism (300) comprises a mounting guide frame (301), a circular guide shaft (302) and a circular mounting ring (303); the mounting guide frame (301) is fixedly installed outside the drill bit positioning frame (101); the circular guide shaft (302) is provided with three, and the three circular guide shafts (302) are slidingly installed on the mounting guide frame (301); the circular mounting ring (303) is slidingly installed outside the drill bit positioning frame (101), and the circular mounting ring (303) is further fixedly connected with the three circular guide shafts (302).

7. The self-locking self-tightening drill chuck as defined in claim 6, wherein The synchronous pushing mechanism (300) further comprises a synchronous pushing frame (304), a circular limiting ring b (305) and a spiral spring b (306); the synchronous pushing frame (304) is fixedly installed at the bottom of the circular mounting ring (303), and the synchronous pushing frame (304) further contacts the outer ends of the three rectangular guide rods (201); the circular limiting ring b (305) is provided with three, and the three circular limiting rings b (305) are fixedly installed at the top ends of the three circular guide shafts (302); the spiral spring b (306) is provided with three, and the three spiral springs b (306) are sleeved outside the three circular guide shafts (302), and the three spiral springs b (306) are located between the mounting guide frame (301) and the circular mounting ring (303).

8. The self-locking self-tightening drill chuck as claimed in claim 6, wherein The adjusting self-locking mechanism (400) comprises a U-shaped mounting frame (401), an adjusting self-locking frame (402) and a positioning tension spring b (403); the U-shaped mounting frame (401) is fixedly installed at the bottom of the circular mounting ring (303); the adjusting self-locking frame (402) is slidingly installed on the U-shaped mounting frame (401) and the circular mounting ring (303), the inner end of the adjusting self-locking frame (402) is matched with a row of inclined self-locking grooves (1011), and the inner end of the adjusting self-locking frame (402) is inserted into the corresponding inclined self-locking groove (1011); the positioning tension spring b (403) is provided with two, and the two ends of the two positioning tension springs b (403) are fixedly connected with the U-shaped mounting frame (401) and the adjusting self-locking frame (402).

9. The self-locking self-tightening drill chuck as claimed in claim 2, wherein The position control mechanism (500) comprises a position control rod (501) and a size marker disc (502); the position control rod (501) is slidingly installed on the drill bit positioning frame (101); the size marker disc (502) is fixedly installed at the outer end of the position control rod (501).

10. The self-locking self-tightening drill chuck of claim 9, wherein, The position control mechanism (500) further comprises a solid sphere (503) and a spiral spring c (504); the solid sphere (503) is provided with four, and the four solid spheres (503) are slidingly installed inside the position control rod (501), and two of the four solid spheres (503) are inserted into the annular positioning groove (1012); the spiral spring c (504) is provided with two, and the two spiral springs c (504) are located between the four solid spheres (503).

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