A high-precision tap chuck

Abstract

The utility model provides a kind of high-precision tap chuck, main body, main body surface swing joint has ball one, main body surface swing joint has torque adjusting sleeve, torque adjusting sleeve lower swing joint has disc spring, disc spring lower swing joint has compression ring, compression ring bottom swing joint has transmission sleeve.This kind of high-precision tap chuck, by being provided with main body, inner clamping groove, inner clamping ring, wedge slot and inner clamping ring etc. structure, main body provides stable installation basis for each component, after positioning sleeve sliding when tap connection, inner clamping ring can be accurately clamped into inner clamping groove, realize the stable locking of tap, avoid loosening deviation when tapping, wedge slot provides smooth guide for tap sliding by slope gradient, guarantee stable motion trajectory, inner clamping ring and inner clamping groove can be formed by grinding processing, effectively improve the precision and surface roughness of part, and each component uses loose installation, avoid the problem of deformation and too large cooperation gap caused by interference installation, greatly improve tapping precision and processing quality.

Description

Technical Field

[0001] This utility model relates to the field of tap chuck technology, and more specifically, to a high-precision tap chuck. Background Technology

[0002] In the field of machining, tap chucks are the core tooling for tapping operations. Their performance directly determines the accuracy and efficiency of thread processing, and they are widely used in hardware manufacturing, automotive parts processing, mold production and other scenarios.

[0003] However, existing tap chucks have the following problems when used:

[0004] Conventional tap chucks, limited by their traditional design and unreasonable layout of core components, are difficult to grind during machining. Grinding, a crucial process for improving part precision and surface roughness, is significantly hampered by increased operational difficulty, directly impacting the machining accuracy of the chuck's core components and failing to provide a high-precision foundation for subsequent assembly and use. Furthermore, conventional tap chucks often use interference fits to connect components, which can easily cause irreversible deformation during assembly, compromising the original structural precision. Interference fits also make precise control of clearance difficult, leading to excessive clearance. These installation defects combined with insufficient machining precision result in significant concentricity deviations after tap clamping, leading to issues such as out-of-tolerance thread dimensions and poor surface roughness during tapping, severely hindering the improvement of machining quality.

[0005] This invention can ensure tapping accuracy and protect equipment and taps. Utility Model Content

[0006] The present invention aims to solve the technical problems mentioned in the background art and provide a high-precision tap chuck.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a high-precision tap chuck, comprising: a main body, wherein a ball bearing is movably connected to the surface of the main body and a corresponding ball bearing groove is formed; a torque adjusting sleeve is movably connected to the surface of the main body; a disc spring is movably connected below the torque adjusting sleeve; a pressure ring is movably connected below the disc spring; a transmission sleeve is movably connected to the bottom of the pressure ring; the transmission sleeve is matched with the ball bearing; a positioning sleeve is slidably embedded inside the main body; an inner retaining ring is formed in the middle of the surface of the positioning sleeve; wedge-shaped grooves are formed at both ends of the interior of the main body, and the wedge grooves are all concave; an inner retaining ring is nested on the surface of the inner retaining ring; and inner retaining grooves are formed on both the left and right sides of the interior of the main body, with the inner retaining ring engaging with the inner retaining grooves.

[0008] A further preferred embodiment: the main body surface is nested with an outer sleeve, and the outer sleeve surface is nested with an outer retaining spring.

[0009] A further preferred embodiment: a spring is fixedly connected to the bottom of the positioning sleeve, and the other end of the spring is fixedly connected to the main body.

[0010] A further preferred embodiment: the positioning sleeve has a second ball embedded in its surface and a corresponding ball groove is provided, and the second ball can roll in the ball groove.

[0011] A further preferred embodiment: the upper end of the transmission sleeve is provided with a semi-groove corresponding to the ball bearing, and the bottom sides of the transmission sleeve are fixedly connected with clamps that are connected to the output source.

[0012] A further preferred embodiment: the bottom of the pressure ring is inclined upward and inward, and is located at the upper end of the ball bearing.

[0013] A further preferred embodiment: the outermost layer is nested on the surface of the torque adjustment sleeve, disc spring, pressure ring, and transmission sleeve, and the inner surface of the outer layer is threaded to be threadedly connected to the torque adjustment sleeve.

[0014] Beneficial effects:

[0015] 1. The device is equipped with an outer sleeve, a torque adjustment sleeve, a disc spring, and a pressure ring. The outer sleeve, as the outermost structure, serves as the overall protection and assembly connection. Its internal threads cooperate with the torque adjustment sleeve, allowing the torque adjustment sleeve to be precisely adjusted in position. The torque adjustment sleeve, disc spring, and pressure ring are linked. By adjusting the compression degree of the disc spring, the pressure of the pressure ring on the ball is changed, thereby achieving flexible torque adjustment to meet the torque requirements of different tapping conditions. The disc spring has good elasticity and buffering performance, which can play a buffering and shock absorption role during tapping. At the same time, in conjunction with the inclined structure of the pressure ring, it can stably control the force state of the ball. When the load exceeds the set torque, the ball slips, causing the transmission sleeve to spin freely, and the main body stops rotating, effectively protecting the tap and equipment, improving the reliability and service life of the chuck, and ensuring the accuracy and safety of tapping operations.

[0016] 2. By setting up a pressure ring, a transmission sleeve, and a ball bearing, the transmission sleeve engages with the ball bearing through a semi-groove to efficiently transmit the output power to the main body, ensuring stable tap rotation. The inclined structure at the bottom of the pressure ring provides precise pressure control for the ball bearing. Combined with torque adjustment components, the transmission tightness can be flexibly adjusted. When the tapping load exceeds the set value, the ball bearing slips between the pressure ring and the transmission sleeve, cutting off the power transmission and preventing the tap from being damaged due to overload. At the same time, it protects the equipment, improves operational safety and the durability of the chuck, and ensures the stability and accuracy of the tapping process.

[0017] 3. By incorporating an inner retaining ring, inner retaining clasp, inner retaining groove, and wedge groove, the inner retaining clasp on the surface of the inner retaining ring slides downwards and engages in the inner retaining groove, effectively locking the tap and preventing loosening or displacement during tapping, thus laying the foundation for machining. The wedge groove, with its own slope, provides smooth guidance for the tap's downward movement, ensuring a stable trajectory during tap movement and reducing sliding resistance and deviation. Together with the rolling of the second ball bearing, these components further optimize the tap's positioning effect and self-adjusting capability, effectively improving the concentricity of the tap after clamping. Combined with the loose-fit installation method, this ensures tapping accuracy and avoids affecting machining quality due to component mismatch issues.

[0018] 4. In summary, this high-precision tap chuck, with its main body, inner groove, inner retaining ring, wedge groove, and inner retaining ring, provides a stable mounting base for all components. During tap connection, the positioning sleeve slides, allowing the inner retaining ring to precisely engage with the inner groove, ensuring a secure lock and preventing loosening or shifting during tapping. The wedge groove, with its inclined slope, provides smooth guidance for the tap's descent, ensuring a stable trajectory. The inner retaining ring and inner groove can be ground to improve part precision and surface roughness. Furthermore, the loose-fitting installation of each component avoids deformation and excessive clearance caused by interference fits. The synergistic effect of these structures effectively addresses the issue of low concentricity after tap clamping, significantly improving tapping accuracy and machining quality. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0020] Figure 2 This is a schematic diagram of the internal structure of this utility model.

[0021] Figure 3 This is an exploded view of the overall structure of this utility model.

[0022] Figure 4 This is a schematic diagram of the positioning sleeve structure of this utility model.

[0023] Figure 5 This is a schematic diagram of the planar structure of the main positioning sleeve of this utility model.

[0024] Figure 1-5 In the middle: 1. Main body; 101. Outer sleeve; 102. Outer retaining ring; 103. Positioning sleeve; 104. Torque adjustment sleeve; 105. Disc spring; 106. Pressure ring; 107. Transmission sleeve; 108. Spring; 109. Ball bearing one; 110. Inner retaining ring; 111. Ball bearing two; 112. Wedge groove; 113. Inner retaining ring; 114. Inner retaining groove. Detailed Implementation

[0025] The following will refer to the appendix in the embodiments of this utility model. Figures 1-5The technical solutions in the embodiments of this utility model will be clearly and completely described.

[0026] Please see Figure 1-5 In this embodiment of the present invention, a high-precision tap chuck includes: a main body 1, on which a ball bearing 109 is movably connected and has a corresponding ball bearing groove; a torque adjusting sleeve 104 is movably connected to the main body 1; a disc spring 105 is movably connected below the torque adjusting sleeve 104; a pressure ring 106 is movably connected below the disc spring 105; a transmission sleeve 107 is movably connected to the bottom of the pressure ring 106; the transmission sleeve 107 is matched with the ball bearing 109; an outer sleeve 101 is nested on the surface of the main body 1; an outer retaining spring 102 is nested on the surface of the outer sleeve 101; and a semi-groove corresponding to the ball bearing 109 is formed at the upper end of the transmission sleeve 107. The bottom sides of sleeve 107 are fixedly connected with locking feet for connecting to the output source. The bottom of the pressure ring 106 is inclined upward and inward and is located above the ball bearing 109. The outermost sleeve 101 is nested on the surface of torque adjusting sleeve 104, disc spring 105, pressure ring 106, and transmission sleeve 107. The outer sleeve 101 has threads inside and is threaded to connect with torque adjusting sleeve 104. First, the ball bearing 109 is installed into the ball groove of the main body 1. Then, the torque adjusting sleeve 104 is fitted onto the surface of the main body 1 to make it movably connected to the main body 1. Next, the disc spring 105 and pressure ring 106 are installed in sequence below the torque adjusting sleeve 104, with the bottom of the pressure ring 106 facing upward. Inclined inwards, positioned above ball bearing 109, the transmission sleeve 107 is installed onto the bottom of the pressure ring 106. The semi-groove at the upper end of the transmission sleeve 107 matches the ball bearing 109. The retaining feet on both sides of the bottom are used for subsequent connection with the output source. Finally, the outer sleeve 101 is nested on the surfaces of the torque adjustment sleeve 104, disc spring 105, pressure ring 106, and transmission sleeve 107. The internal thread of the outer sleeve 101 is threadedly connected to the torque adjustment sleeve 104. Finally, an outer retaining spring 102 is nested on the surfaces of the main body 1 and the outer sleeve 101. The output source transmits power through the retaining feet at the bottom of the transmission sleeve 107. The transmission sleeve 107 clamps the ball bearing 106 through the semi-groove and retaining ring 106, and the ball bearing... Since ball 109 is embedded in the ball groove and cannot move, when the transmission sleeve 107 is powered, it can drive the main body 1 to rotate. By rotating the outer sleeve 101, the position of the torque adjustment sleeve 104 can be adjusted through its threaded connection with the torque adjustment sleeve 104, thereby compressing the disc spring 105 and changing the pressure of the pressure ring 106 on ball 109, thus achieving torque adjustment. The main body 1 is used to hold the tap and perform tapping work under the action of torque. When the load exceeds the set torque, ball 109 will slip or even slide out under the action of the pressure ring 106 and the transmission sleeve 107, causing the transmission sleeve 107 to spin freely and the main body 1 to stop rotating, thereby protecting the tap and the equipment.

[0027] In this embodiment of the invention, a positioning sleeve 103 is slidably embedded inside the main body 1. A spring 108 is fixedly connected to the bottom of the positioning sleeve 103, and the other end of the spring 108 is fixedly connected to the main body 1. An inner retaining ring 110 is formed in the middle of the surface of the positioning sleeve 103. Wedge-shaped grooves 112 are formed at both the left and right ends inside the main body 1, and the wedge-shaped grooves 112 are all concave. An inner retaining ring 113 is nested on the surface of the inner retaining ring 110. Inner retaining grooves 114 are formed on both the left and right sides inside the main body 1, and the inner retaining rings 113 engage with the inner retaining grooves 114. A second ball bearing 111 is embedded and installed on the surface of the positioning sleeve 103, and a corresponding ball bearing groove is formed, allowing the second ball bearing 111 to roll within the ball bearing groove. When the tap is connected to the positioning sleeve 103, the spring 108 is compressed downwards under pressure, and the positioning sleeve 103 slides inside the main body 1. After the inner retaining ring 110 slides downwards, the inner retaining ring 113 is engaged in the inner retaining groove 114 to lock the tap. The wedge groove 112 provides guidance for the tap to slide down through the slope, and with the rolling of the ball bearing 111, the tap is positioned and self-adjusted. Furthermore, the inner retaining ring 110 and the inner retaining groove 114 can be directly ground, which improves both precision and surface finish. At the same time, the tap is loosely fitted to the main body 1 to avoid deformation and excessive clearance caused by interference fit, effectively solving the problem of low concentricity after the tap is clamped and ensuring tapping accuracy.

Claims

1. A high-precision tap chuck, comprising: The main body (1) is characterized in that: a ball bearing (109) is movably connected to the surface of the main body (1) and a corresponding ball bearing groove is provided; a torque adjusting sleeve (104) is movably connected to the surface of the main body (1); a disc spring (105) is movably connected below the torque adjusting sleeve (104); a pressure ring (106) is movably connected below the disc spring (105); a transmission sleeve (107) is movably connected to the bottom of the pressure ring (106); and the transmission sleeve (107) is matched with the ball bearing (109). The main body (1) is fitted with a sliding connection of a positioning sleeve (103). An inner retaining ring (110) is provided in the middle of the surface of the positioning sleeve (103). Wedge grooves (112) are provided at both the left and right ends of the main body (1). The wedge grooves (112) are all concave. An inner retaining ring (113) is nested on the surface of the inner retaining ring (110). An inner retaining groove (114) is provided on both the left and right sides of the main body (1). The inner retaining ring (113) is engaged with the inner retaining groove (114).

2. The high-precision tap chuck according to claim 1, characterized in that: The main body (1) is provided with an outer sleeve (101) nested on its surface, and the outer sleeve (101) is provided with an outer retaining spring (102) nested on its surface.

3. A high-precision tap chuck according to claim 1, characterized in that: A spring (108) is fixedly connected to the bottom of the positioning sleeve (103), and the other end of the spring (108) is fixedly connected to the main body (1).

4. A high-precision tap chuck according to claim 3, characterized in that: The positioning sleeve (103) has a ball bearing two (111) embedded in its surface and a corresponding ball bearing groove is provided. The ball bearing two (111) can roll in the ball bearing groove.

5. A high-precision tap chuck according to claim 1, characterized in that: The upper end of the transmission sleeve (107) is provided with a semi-groove corresponding to the first ball (109), and the bottom sides of the transmission sleeve (107) are fixedly connected with clamps that are connected to the output source.

6. A high-precision tap chuck according to claim 1, characterized in that: The bottom of the pressure ring (106) is inclined upward and inward, and is located at the upper end of the ball bearing (109).

7. A high-precision tap chuck according to claim 2, characterized in that: The outermost layer (101) is nested on the surface of the torque adjustment sleeve (104), disc spring (105), pressure ring (106), and transmission sleeve (107). The outer layer (101) has a thread inside and is threadedly connected to the torque adjustment sleeve (104).

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