Device for locking drill chuck
The innovative chuck tightening device addresses inefficiencies in existing tools by using a handle and shaft system for precise alignment and leverage, ensuring secure fastening and preventing drill bit wobble and operator injury.
Patent Information
- Application Number
- CN202422206611.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-09
- Publication Date
- 2025-07-15
- Estimated Expiration
- 2034-09-09
AI Technical Summary
During the processing process, existing drill chucks are prone to problems such as not clamping, rotating, and axial squirting of the drill bits, and the helical teeth are prone to shattering, resulting in operator injury.
A drill chuck locking device including a handle, a pin, a clamping block, a fixing ring and a nut is designed. The lever principle is used to apply force through the handle, and the pin is a support point to achieve locking and loosening of the drill chuck.
It effectively avoids problems such as not clamping the drill chuck, crushing and slipping helical teeth, improves processing efficiency, avoids personal injury, and is easy to operate.
Smart Images
Figure CN223099138U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a device for locking a drill chuck, which is mainly applied to the field of locking or loosening a drill chuck. Background Art
[0002] A drill chuck is a tool widely used in machine tools such as drill presses and lathes for drilling. In daily production, a drill chuck key is used to lock or loosen the drill chuck. This is a common tool that can be purchased on the market, but it has many deficiencies. For example, the key wrench is short, and it is very difficult to lock the drill chuck only by the strength of the hand, resulting in the phenomenon that the drill bit is not tightly clamped and rotates and axially moves during the processing. After long-term use, the helical teeth used for locking on the key are prone to tooth loss and tooth breakage. During the operation, due to the slipping of the helical teeth, the operator may experience finger bumps, causing personal injury to the operator. Summary of the Utility Model
[0003] The purpose of the utility model is to overcome the above-mentioned defects of the prior art, and provide a device for locking a drill chuck, so as to solve the problems that the drill bit is not tightly clamped and rotates and axially moves during the use of the drill chuck, and the slipping of the helical teeth causes personal injury, etc.
[0004] The above purpose of the utility model is mainly realized by the following technical solutions:
[0005] A device for locking a drill chuck includes a handle, a pin shaft, a clamping block, a fixed ring and a nut. The handle is connected to the clamping block. Through holes are formed on the outer circumferential surface of the fixed ring, and the through holes communicate with the inner hole of the fixed ring. The clamping block is arranged in the through holes. Pin shaft holes are arranged on the surface of the clamping block and the fixed ring. The pin shaft sequentially passes through the pin shaft holes and is fixed at one end by tightening with a nut.
[0006] In the above device for locking a drill chuck, the fixed ring is a ring-shaped cylinder, and the through hole is a waist-shaped hole.
[0007] In the above device for locking a drill chuck, the perpendicularity of the pin shaft holes on both end faces of the fixed ring is ≤0.02 mm, the central axis of the pin shaft holes is perpendicular to and intersects with the center line of the through hole of the fixed ring, and the coaxiality of the pin shaft holes on both end faces is ≤Φ0.02 mm.
[0008] In the above device for locking a drill chuck, one end of the handle connected to the clamping block has a cylindrical boss, the outer circle at the connection with the cylindrical boss is chamfered C0.5, a cylindrical hole is arranged at the top of the clamping block, and the cylindrical boss is inserted into the cylindrical hole to connect the handle and the clamping block.
[0009] In the above-mentioned device for locking a drill chuck, two planes are provided on one side of the handle connected to the clamping block, and the planes are symmetrical with respect to the center line of the cylinder. The thickness of the oblate circle formed at the plane is less than the width of the through-hole of the fixed ring.
[0010] In the above-mentioned device for locking a drill chuck, the clamping block includes two inner and outer arc surfaces, and the rest of the surfaces are planes. The inner arc surface and the outer arc surface of the clamping block are respectively conforming to the inner arc surface and the outer arc surface of the fixed ring.
[0011] In the above-mentioned device for locking a drill chuck, the outer circle of one side of the handle connected to the clamping block is chamfered C1.
[0012] In the above-mentioned device for locking a drill chuck, the other end of the pin shaft is limited by a nut.
[0013] The utility model has the following beneficial effects compared with the prior art:
[0014] (1) The utility model innovatively designs the structure of the drill chuck locking device, solves problems such as the drill chuck not being clamped tightly, the helical teeth breaking and slipping, etc., can effectively avoid accidents such as personal injuries, and at the same time avoids the operation of repeatedly locking the drill chuck, improving the processing efficiency.
[0015] (2) The locking method of the locking device of the utility model is to apply force through the handle, with the pin shaft as the support point, and utilize the lever principle to lock the drill chuck with a smaller force.
[0016] (3) The utility model has a simple structure and is easy to operate, and has a wide application prospect. Description of the Drawings
[0017] Figure 1 is the structural diagram of the drill chuck locking device of the utility model;
[0018] Figure 2 is the sectional view of the drill chuck locking device of the utility model;
[0019] Figure 3 is the structural schematic diagram of the drill chuck of the utility model;
[0020] Figure 4 is the structural schematic diagram of the drill chuck locking device of the utility model used in cooperation with the drill chuck;
[0021] Figure 5 is the structural schematic diagram of the fixed ring of the utility model;
[0022] Figure 6 is the structural schematic diagram of the handle of the utility model;
[0023] Figure 7 is the structural schematic diagram of the clamping block of the utility model;
[0024] Figure 8 This is a schematic structural diagram of the pin shaft of the present utility model;
[0025] Figure 9 This is a schematic structural diagram of the nut of the present utility model. Specific embodiments
[0026] The present utility model will be further described in detail below in conjunction with the accompanying drawings and specific embodiments:
[0027] As Figure 1 shown is a structural diagram of the drill chuck locking device of the present utility model, Figure 2 shown is a sectional view of the drill chuck locking device of the present utility model. It can be seen from the figure that the drill chuck clamping device of the present utility model includes a handle 1, a pin shaft 2, a clamping block 3, a fixed ring 4, and a nut 5. Among them, the handle 1 is connected to the clamping block 3. A through hole 402 is provided on the outer circumferential surface of the fixed ring 4, and the through hole 402 communicates with the inner hole 401 of the fixed ring 4. The clamping block 3 is arranged in the through hole 402. Pin holes are provided on the surfaces of the clamping block 3 and the fixed ring 4. The pin shaft 2 passes through these holes in sequence, with one end limited by a nut and the other end fixed by the nut 5. As Figure 3 shown is a schematic structural diagram of the drill chuck of the present utility model, including a rotating dial ring 6 and drill chuck clamping jaws 7. Rotating the rotating dial ring 6 of the drill chuck can drive the drill chuck clamping jaws 7 to contract or expand, so as to achieve the purpose of locking or loosening the drill chuck.
[0028] As Figure 4 shown is a schematic structural diagram of the drill chuck locking device of the present utility model in cooperation with the drill chuck. There is a gap between the fixed ring 4 and the rotating dial ring 6 of the drill chuck, preferably 0.2 - 0.5 mm, to ensure that the clamping block 3 has space to rotate and can clamp the rotating dial ring 6 between the fixed ring 4. Place the fixed ring 4 at the position of the rotating dial ring 6 of the drill chuck. By applying force through rotating the handle 1, the clamping block 3 is driven to rotate. The clamping block 3 contacts the rotating dial ring 6 of the drill chuck and presses against the arc surface of the rotating dial ring 6, clamping the rotating dial ring 6 of the drill chuck between the fixed ring 4 and the clamping block 3. Then, when the handle 1 continues to apply force, under the pressure of the clamping block 3, the rotating dial ring 6 of the drill chuck is forced to rotate, thereby driving the drill chuck clamping jaws 7 to contract, achieving the purpose of locking the drill chuck 8.
[0029] As Figure 5 shown is a schematic structural diagram of the fixed ring of the present utility model. A through hole 402 is provided on the outer circumferential surface of the fixed ring 4, and the through hole 402 communicates with the inner hole 401 of the fixed ring 4 and is perpendicular to the circumferential surface where it is located. The fixed ring 4 is an annular cylinder, and the through hole is a waist-shaped hole. The perpendicularity of the pin holes on both end faces of the fixed ring 4 is ≤ 0.02 mm. At the same time, the central axis of the pin hole is perpendicular to and intersects with the center line of the through hole of the fixed ring 4, and the coaxiality of the pin holes on both end faces is ≤ Φ0.02 mm.
[0030] As Figure 6 shown is a schematic structural view of the handle of the present utility model. One end of the handle 1 has a cylindrical boss 9, and the cylindrical boss 9 is engaged with the cylindrical hole on the arc surface at the top end of the clamping block 3. The outer circle at the connection with the boss is chamfered with C0.5.
[0031] On one side of the handle 1 connected to the clamping block 3, two planes 10 are provided, and the planes 10 are symmetric with respect to the center line of the cylinder. The thickness of the oblate circle formed at the planes 10 is less than the width of the through hole of the fixing ring 4.
[0032] The outer circle of the side of the handle 1 connected to the clamping block 3 is chamfered with C1
[0033] As Figure 7 shown is a schematic structural view of the clamping block of the present utility model. There is a cylindrical hole at the central part of the arc surface at the top end of the clamping block 3, and the cylindrical hole is engaged with the boss at one end of the handle 1. The hole chamfer is C1.5 for welding. There is a pin shaft hole on the end face perpendicular to the clamping block, and the perpendicularity is ≤0.02 mm, and the central axis of the pin shaft hole intersects perpendicularly with the central axis of the round hole at the top end of the clamping block 3. The diameter dimension of the pin shaft hole of the clamping block 3 is the same as the diameter dimension of the two pin shaft holes on the end face of the fixing ring 4. The distances from the pin shaft hole of the clamping block 3 and the pin shaft holes on the end face of the fixing ring 4 to the center of the fixing ring are equal. The clamping block 3 includes two inner and outer arc surfaces, and the rest of the surfaces are planes. The inner arc surface and the outer arc surface of the clamping block 3 are conforming to the inner arc surface and the outer arc surface of the fixing ring 4 respectively. The width of the clamping block 3 is less than the width of the through hole of the fixing ring 4.
[0034] As Figure 8 shown is a schematic structural view of the pin shaft of the present utility model. One end of the pin shaft has a thread, and one end is an external hexagonal nut. The central optical axis in the middle is engaged with the pin shaft holes on the end faces of the fixing ring 4 and the clamping block 3, and the thread is engaged with the nut 5.
[0035] As Figure 9 shown is a schematic structural view of the nut of the present utility model. The nut 5 is an external hexagonal nut, and the nut 5 is engaged with the thread at one end of the pin shaft.
[0036] The working principle of the present utility model is as follows:
[0037] When the drill chuck locking device of the present utility model is as Figure 4Place as shown. Position the fixed ring 4 at the position of the rotary shifting ring 6 of the drill chuck. Then apply force by rotating the handle 1, thereby driving the clamping block 3 to rotate. The clamping block 3 contacts the rotary shifting ring 6 of the drill chuck and presses against the arc surface of the rotary shifting ring 6, clamping the rotary shifting ring 6 of the drill chuck between the fixed ring 4 and the clamping block 3. Then continue to apply force to the handle 1. Under the pressure of the clamping block 3, the rotary shifting ring 6 of the drill chuck is forced to rotate, thereby driving the clamping claws 7 of the drill chuck to contract, achieving the purpose of locking the drill chuck. Similarly, by operating the handle 1 in the reverse direction to apply force, the drill chuck can be loosened.
[0038] The content not described in detail in the specification of the present utility model belongs to the well-known technology of those skilled in the art.
Claims
1. A device for drill chuck locking, characterized in that: It includes a handle (1), a pin shaft (2), a clamping block (3), a fixing ring (4) and a nut (5). The handle (1) is connected to the clamping block (3). A through hole (402) is formed on the outer circumferential surface of the fixing ring (4), and the through hole (402) communicates with the inner hole (401) of the fixing ring (4). The clamping block (3) is arranged in the through hole (402). Pin holes are provided on the surface of the clamping block (3) and the fixing ring (4). The pin shaft (2) sequentially passes through the pin holes and is tightened and fixed at one end by the nut (5).
2. The device for drill chuck locking according to claim 1, characterized in that: The fixing ring (4) is an annular cylinder, and the through hole is an oblong hole.
3. The device for drill chuck locking according to claim 1, characterized in that: The perpendicularity of the pin holes on both end faces of the fixing ring (4) is ≤0.02 mm. The central axis of the pin hole is perpendicular to and intersects with the center line of the through hole of the fixing ring (4), and the coaxiality of the pin holes on both end faces is ≤Φ0.02 mm.
4. The device for drill chuck locking according to claim 1, characterized in that: One end of the handle (1) connected to the clamping block (3) has a cylindrical boss (9). The outer circle at the connection with the cylindrical boss (9) has a chamfer C0.
5. A cylindrical hole is provided at the top of the clamping block (3), and the cylindrical boss (9) is inserted into the cylindrical hole to connect the handle (1) and the clamping block (3).
5. The device for drill chuck locking according to claim 1, characterized in that: Two planes (10) are provided on one side of the handle (1) connected to the clamping block (3), and the planes (10) are symmetric with respect to the center line of the cylinder. The thickness of the oblate circle formed at the planes (10) is less than the width of the through hole of the fixing ring (4).
6. The device for drill chuck locking according to claim 1, characterized in that: The clamping block (3) includes an inner and an outer arc surface, and the remaining surfaces are planes. The inner arc surface and the outer arc surface of the clamping block (3) are respectively conforming to the inner arc surface and the outer arc surface of the fixing ring (4).
7. The device for drill chuck locking according to claim 1, characterized in that: The outer circle on the side of the handle (1) connecting the clamping block (3) has a chamfer C1.
8. The device for drill chuck locking according to claim 1, characterized in that: The other end of the pin shaft (2) is limited by a nut.