Chuck for bit

Abstract

The utility model belongs to the field of machining, and relates to a chuck for a bit. The chuck for the screwdriver bit comprises a shell, a blind hole, a containing groove and a floating groove, the blind hole is used for containing the screwdriver bit and extends in the axis direction, the containing groove is formed in the outer side face of the shell, the floating groove penetrates through the shell in the radial direction of the shell, and one end of the floating groove is communicated with the blind hole; the elastic piece is arranged in the accommodating groove and protrudes out of the opening of the accommodating groove; the clamping steel ball is clamped in the floating groove, can move in the radial direction of the shell and is used for clamping the screwdriver head; the clamping head outer sleeve is arranged on the outer side of the shell in a sleeving mode and can slide in the axis direction of the shell, and when the clamping head outer sleeve moves to a first preset position in the axial direction of the shell, the clamping head outer sleeve tightly presses the clamping steel ball in the radial direction of the clamping steel ball, and meanwhile the clamping head outer sleeve tightly presses the elastic piece so that the clamping head outer sleeve can be fixed through the elastic force of the compressed elastic piece. The chuck for the screwdriver head can simplify the process of mounting and dismounting the screwdriver head, and is convenient to operate.

Description

Technical Field

[0001] This utility model belongs to the field of machining and relates to a chuck for bit making. Background Technology

[0002] Screwdriver chucks are widely used in the machining field. They can be used in drilling, milling, turning, sawing, cutting and other processes. By clamping and rotating the workpiece, screwdriver chucks can significantly improve the stability and accuracy of machining, thereby ensuring product quality and machining efficiency.

[0003] Please see Figure 1 When the bit 200 is held in the bit chuck, the clamping steel ball inside the bit chuck can roll into the groove 201 of the bit. Once rolled in, it can press the bit tightly, ensuring that the bit will not move or loosen and affect the stability and accuracy of the processing.

[0004] However, operating such bit chucks typically requires the use of both hands, which presents some inconvenience for the operator. When removing a bit from the bit chuck, one hand needs to hold the processing device to stabilize its position, while the other hand needs to press down on the bit chuck to eject the bit. This can lead to decreased operational efficiency and, in busy production environments, may increase workload and operational complexity. Utility Model Content

[0005] The purpose of this invention is to provide a bit chuck that simplifies the process of installing and removing bit tools.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a chuck for a bit, comprising:

[0007] The housing has a blind hole extending along the axial direction for accommodating a screwdriver bit, a receiving groove formed on the outer surface of the housing, and a floating groove penetrating the housing in the radial direction, one end of the floating groove communicating with the blind hole;

[0008] An elastic element is disposed within the receiving groove and protrudes from the opening of the receiving groove;

[0009] A clamping steel ball is held in the floating groove and can move radially along the housing. The clamping steel ball is used to engage the bit.

[0010] The chuck sleeve is fitted on the outside of the housing and can slide along the axial direction of the housing. When the chuck sleeve moves to a first preset position along the axial direction of the housing, the chuck sleeve presses the clamping steel ball in the radial direction and at the same time, the chuck sleeve presses the elastic member so as to fix the chuck sleeve by the elastic force of the compressed elastic member.

[0011] Furthermore, the chuck for the bit also includes an axial spring, with its two ends connected to the housing and the chuck sleeve, respectively, and the axial spring is extendable and retractable along the axial direction of the housing.

[0012] Furthermore, the axial spring is sleeved between the housing and the clamp sleeve.

[0013] Furthermore, a first protrusion is formed on the inner wall of the chuck sleeve, the first protrusion can compress the clamping steel ball in the radial direction of the housing, a gasket is fixed on the outer surface of the housing, and the axial spring connects the gasket and the first protrusion in the axial direction of the housing.

[0014] Furthermore, the outer surface of the housing includes a first annular surface and a second annular surface, the second annular surface protruding from the first annular surface in the radial direction of the housing, the receiving groove being formed on the second annular surface, the floating groove being formed on the first annular surface, and the first protrusion being slidably disposed on the first annular surface.

[0015] Furthermore, the receiving groove is arranged circumferentially along the housing, and the elastic element is an elastic retaining ring.

[0016] Furthermore, there are multiple clamping steel balls arranged along the circumferential direction of the shell.

[0017] Furthermore, the inner surface of the floating groove is provided with guide protrusions that protrude from the shell.

[0018] Furthermore, a steel ball sleeve is fitted on the outer side of the housing, and a through hole with a diameter smaller than that of the clamping steel ball is formed on the steel ball sleeve. The clamping steel ball is installed on the steel ball sleeve and passes through the through hole to be held in the floating groove.

[0019] Furthermore, the outer wall of the clamp jacket is provided with anti-slip texture.

[0020] The beneficial effects of this utility model are as follows: By pushing the chuck outer sleeve to the first preset position, the chuck outer sleeve presses against the clamping steel ball and is held in place by the elastic element, thereby locking the bit. When it is necessary to remove the bit, simply pull out the chuck outer sleeve with one hand to release the pressure on the clamping steel ball, and then pull out the bit. This simplifies the operation process, improves work efficiency and stability, and reduces the operator's burden.

[0021] The above description is only an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, the preferred embodiments of this utility model are described in detail below with reference to the accompanying drawings. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the screwdriver bit structure;

[0023] Figure 2 This is a schematic diagram of the structure of a chuck for bit cutting according to an embodiment of the present invention;

[0024] Figure 3 A diagram illustrating the insertion of a bit into a bit chuck;

[0025] Figure 4 A schematic diagram showing how the steel ball is clamped and falls into the groove of the screwdriver bit;

[0026] Figure 5 This is a diagram illustrating the movement of the clip-on jacket to the first preset position. Detailed Implementation

[0027] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0028] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0029] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0030] Furthermore, the technical features involved in the different embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0031] Please see Figure 2The bit chuck 100 shown in a preferred embodiment of this application includes a housing 1, an elastic element 2, a clamping steel ball 3, and a chuck outer sleeve 4.

[0032] A blind hole 11 extending along the axial direction is formed on the housing 1 to accommodate the bit 200, ensuring that the bit 200 can be stably positioned within the housing 1. A receiving groove 12 is formed on the outer surface 15 of the housing 1 to accommodate the elastic member 2 and allow the elastic member 2 to maintain appropriate elasticity during use. A floating groove 13 penetrating the housing 1 is also formed on the housing 1 along the radial direction, with one end of the floating groove 13 communicating with the blind hole 11.

[0033] The elastic element 2 is disposed in the receiving groove 12 and protrudes from the opening of the receiving groove 12. The elastic element 2 can be compressed under the action of the clamp sleeve 4 and the clamp sleeve 4 is fixed by its elastic force, and the clamp sleeve 4 is fixed along the radial direction of the housing 1.

[0034] The clamping steel ball 3 is held in the floating groove 13 and can move in the radial direction of the housing 1. The clamping steel ball 3 is used to hold the bit 200. When the bit 200 is inserted into the blind hole 11, the clamping steel ball 3 is pushed up by the outer side of the bit 200. When the groove 201 of the bit 200 moves to the same radial position as the clamping steel ball 3, the clamping steel ball 3 falls into the groove 201, thereby limiting the movement of the bit 200.

[0035] The chuck sleeve 4 is fitted on the outside of the housing 1 and can slide along the axial direction of the housing 1. When the chuck sleeve 4 moves to the first preset position along the axial direction of the housing 1, the chuck sleeve 4 presses the clamping steel ball 3 in the radial direction of the clamping steel ball 3. At the same time, the chuck sleeve 4 presses the elastic member 2 so as to fix the chuck sleeve 4 by the elastic force of the compressed elastic member 2.

[0036] The chuck 100 locks the bit 200 by pushing the chuck outer sleeve 4 to a first preset position, whereby the chuck outer sleeve 4 presses against the clamping steel ball 3 and is held in place by the elastic element 2. When the bit 200 needs to be removed, simply pull out the chuck outer sleeve 4 with one hand to release the pressure on the clamping steel ball 3, and then pull out the bit 200. This simplifies the operation process, improves work efficiency and stability, and reduces the operator's burden.

[0037] Please see Figures 3 to 5 The chuck 100 for the bit also includes an axial spring 5, with its two ends connected to the housing 1 and the chuck sleeve 4, respectively. The axial spring 5 can extend and retract along the axis of the housing 1. When the chuck sleeve 4 moves to the first preset position, the axial spring 5 is stretched and has elastic potential energy. When it is necessary to remove the bit 200, the chuck sleeve 4 is pulled off the elastic element 2, and the axial spring 5 releases its elastic potential energy, causing the chuck sleeve 4 to quickly return to its original position.

[0038] In this embodiment, the axial spring 5 is sleeved between the housing 1 and the chuck outer sleeve 4, making the entire structure compact and easy to operate. Optionally, the axial spring 5 is a conical spring, with the narrower end face of the conical spring connected to the chuck outer sleeve 4 and the wider end face connected to the housing 1. The high load capacity of the conical spring achieves a large load-bearing capacity within a limited space, further improving the overall performance and reliability of the bit chuck 100.

[0039] In another embodiment, the axial spring 5 includes several sub-springs (not shown) arranged circumferentially along the housing 1. Each sub-spring is connected at both ends to the housing 1 and the chuck sleeve 4, thereby increasing the uniformity of the axial spring 5 and enabling the chuck sleeve 4 to move more smoothly during operation, further improving the stability of the overall structure.

[0040] In this embodiment, a first protrusion 41 is formed on the inner wall of the chuck sleeve 4. The first protrusion 41 can squeeze and clamp the steel ball 3 in the radial direction of the housing 1. When the chuck sleeve 4 slides to the first preset position, the first protrusion 41 will apply radial pressure, so that the clamping steel ball 3 is in close contact with the groove 201 of the bit 200. A gasket 14 is fixed on the outer side 15 of the housing 1, and an axial spring 5 connects the gasket 14 and the first protrusion 41 in the axial direction of the housing 1.

[0041] The outer surface 15 of the housing 1 includes a first annular surface 151 and a second annular surface 152. The second annular surface 152 protrudes from the first annular surface 151 in the radial direction of the housing 1, and the outer surface 15 of the housing 1 forms a stepped shape. A receiving groove 12 is formed on the second annular surface 152, a floating groove 13 is formed on the first annular surface 151, and a first protrusion 41 is slidably disposed on the first annular surface 151.

[0042] The receiving groove 12 is arranged circumferentially along the housing 1. It can be a complete annular groove or several sub-receiving grooves arranged circumferentially along the housing, evenly distributed on the second annular surface 152. This ensures that when the chuck jacket 4 is in the preset first position, it can be evenly supported by the elastic element 2, and the force is even. The elastic element 2 is an elastic baffle. The elastic baffle supports the chuck jacket 4 with its own elastic force and plays a key role in the locking and releasing process of the bit 200. It can lock the chuck jacket 4 in the first preset position and limit the chuck jacket 4 after the bit 200 is released, preventing the chuck jacket 4 from squeezing and clamping the steel ball 3 when not under force.

[0043] The inner surface of the floating groove 13 is provided with a guide protrusion (unlabeled) protruding from the housing 1 to ensure that the clamping steel ball 3 moves radially within the floating groove 13 and prevents it from shifting or getting stuck during operation.

[0044] Optionally, a steel ball sleeve (not shown) is fitted onto the outer side of the housing 1. The steel ball sleeve has a through hole (not shown) with a diameter smaller than that of the clamping steel ball 3. The clamping steel ball 3 is mounted on the steel ball sleeve, passing through the through hole to be held within the floating groove 13. The clamping steel ball 3, mounted on the steel ball sleeve, not only provides additional support and stability but also effectively prevents it from falling off or loosening due to radial movement during use. The presence of the steel ball sleeve also protects the inner surface of the floating groove 13, reducing wear and damage and extending the service life of the chuck 100. Simultaneously, the steel ball sleeve helps to distribute stress, improving the overall structural strength and durability.

[0045] Multiple clamping steel balls 3 are arranged circumferentially along the housing 1. By arranging multiple clamping steel balls 3 circumferentially, a stronger clamping force and a more stable fixing effect can be achieved. When the chuck sleeve 4 slides axially and presses against these clamping steel balls 3, the bit 200 is firmly locked within the blind hole 11. Multi-point clamping not only improves the overall clamping performance of the bit chuck 100 but also effectively disperses stress on the bit 200, preventing damage or deformation caused by concentrated stress. Furthermore, this arrangement improves the smoothness of bit insertion and removal, reduces friction and resistance during operation, and makes operation simpler and more efficient.

[0046] Optionally, the outer wall of the chuck cover 4 is provided with anti-slip texture. The anti-slip texture can significantly increase the friction of the surface of the chuck cover 4, so that the operator can firmly grip the chuck cover 4 even when hands are sweaty or gloves are worn, preventing slippage or loss of hand.

[0047] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0048] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A chuck for a batch tool, characterized by, include: The housing has a blind hole extending along the axial direction for accommodating a screwdriver bit, a receiving groove formed on the outer surface of the housing, and a floating groove penetrating the housing in the radial direction, one end of the floating groove communicating with the blind hole; An elastic element is disposed within the receiving groove and protrudes from the opening of the receiving groove; A clamping steel ball is held in the floating groove and can move radially along the housing. The clamping steel ball is used to engage the bit. The chuck sleeve is fitted on the outside of the housing and can slide along the axial direction of the housing. When the chuck sleeve moves to a first preset position along the axial direction of the housing, the chuck sleeve presses the clamping steel ball in the radial direction and at the same time, the chuck sleeve presses the elastic member so as to fix the chuck sleeve by the elastic force of the compressed elastic member.

2. The chuck as set forth in claim 1, wherein The chuck for the bit also includes an axial spring, with its two ends connected to the housing and the chuck sleeve, respectively. The axial spring can extend and retract along the axial direction of the housing.

3. The chuck as set forth in claim 2, wherein The axial spring is sleeved between the housing and the clamp sleeve.

4. The chuck as set forth in claim 3, wherein A first protrusion is formed on the inner wall of the chuck sleeve. The first protrusion can compress the clamping steel ball in the radial direction of the housing. A gasket is fixed on the outer surface of the housing. The axial spring connects the gasket and the first protrusion in the axial direction of the housing.

5. The chuck as set forth in claim 4, wherein The outer surface of the housing includes a first annular surface and a second annular surface. The second annular surface protrudes from the first annular surface in the radial direction of the housing. The receiving groove is formed on the second annular surface, the floating groove is formed on the first annular surface, and the first protrusion is slidably disposed on the first annular surface.

6. The chuck as set forth in claim 1, wherein The receiving groove is arranged circumferentially along the housing, and the elastic element is an elastic retaining ring.

7. The chuck as set forth in claim 1, wherein There are multiple clamping steel balls, which are arranged along the circumferential direction of the shell.

8. The chuck as set forth in claim 1, wherein The inner surface of the floating groove is provided with guide protrusions that protrude from the shell.

9. The chuck as set forth in claim 1, wherein A steel ball sleeve is fitted on the outer side of the housing. A through hole with a diameter smaller than that of the clamping steel ball is formed on the steel ball sleeve. The clamping steel ball is installed on the steel ball sleeve and passes through the through hole to be held in the floating groove.

10. The chuck as set forth in claim 1, wherein The outer wall of the clip jacket is provided with anti-slip texture.

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