Torque-adjustable cutter handle connected with bit
By designing a adjustable torque knife handle that connects the batch header, the problem of unprecedented accuracy of the accuracy of mechanical work folders and fixtures in mechanical processing is solved, and the accuracy stability and production efficiency of workpiece are realized. At the same time, the production cost is reduced. Essence
Patent Information
- Application Number
- CN202422622989.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-30
- Publication Date
- 2025-01-28
- Estimated Expiration
- 2034-10-30
AI Technical Summary
In the field of mechanical processing, the clamping adjustment of mechanical tooling fixtures usually relies on the operator to manually adjust the card pressure, resulting in uncontrollable accuracy and stability, great subjective influence, long auxiliary working hours, and high production costs.
Design a adjustable torque knife handle that connects the batch head, move through the main axis of the machine tool, and use the knife handle to control the batch head to rotate the nut on the work of the work. To achieve the rotation of the rotating torque Consistent.
The stability of workpiece accuracy is achieved, the production efficiency is improved, the production auxiliary time and cost are reduced, and the subjective impact is reduced.
Smart Images
Figure CN222404575U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to an adjustable torque type tool handle connected to a screwdriver bit, belonging to the technical field of automated tooling fixtures for mechanical processing. Background Art
[0002] In the field of mechanical processing, hydraulic or pneumatic clamps are usually used to clamp parts in automated processing lines or automated processing units. However, since hydraulic and pneumatic clamps are more expensive than mechanical clamps and are not applicable to some working conditions, mechanical fixtures still have a wide range of applications. At present, the clamping and adjustment of mechanical fixtures usually use operators to manually clamp parts, and some parts with higher precision requirements require operators to use torque wrenches to continuously adjust the clamping pressure to meet processing requirements. The adjustment and clamping process requires high technical capabilities of the operator, and there are many subjective factors that affect the operator, resulting in uncontrollable precision and stability of the workpieces produced, and a long auxiliary working time, which invisibly raises the production cost. Summary of the invention
[0003] The technical problem to be solved by the utility model is to provide an adjustable torque type tool handle connected to a screwdriver bit, the adjustable torque type tool handle is moved by the machine tool spindle and controls the screwdriver bit to rotate and position the nut on the tooling through the tool handle, and the rotational torque is within a set range, so that the clamping force of the tooling is uniform, which not only ensures the accuracy and stability of the workpiece, but also improves the production efficiency, reduces the production auxiliary time, and greatly reduces the production cost.
[0004] To solve the above problems, the specific technical scheme of the utility model is as follows: an adjustable torque-type tool handle connected to a screwdriver bit, comprising a Latin and a tool handle, an outer shell connected below the tool handle, rectangular openings symmetrically provided on both sides of the outer shell, and a protective cover connected to the rectangular opening; an end cover is connected to the bottom of the outer shell; a fixed ratchet, a sliding ratchet and a core shaft are arranged in the inner cavity of the outer shell from top to bottom, wherein the upper end of the fixed ratchet is connected to the top surface of the outer shell, the core shaft passes through the end cover and is coaxially matched with the lower end surface of the outer shell through an angular contact ball bearing, the top of the core shaft is slidably connected to the sliding ratchet through a flat key, and the tooth shape on the upper surface of the sliding ratchet is meshed with the tooth shape on the lower surface of the fixed ratchet; an adjusting nut is threadedly connected to the core shaft, the upper end of a spring I is supported on the lower surface of the sliding ratchet, and the lower end is supported on the adjusting nut; the lower end of the core shaft is connected to the screwdriver bit through a universal sleeve.
[0005] The top of the outer shell is a flange structure, and the flange of the outer shell is connected to the flange at the lower end of the tool handle by bolts; a keyway in the diameter direction is provided on the upper surface of the outer shell, and a keyway is also provided at the corresponding position on the lower surface of the tool handle. A positioning key is connected to the keyway of the outer shell by a screw, and the positioning key is matched with the keyway of the tool handle.
[0006] A long hole is provided on the upper surface of the outer shell, and a long boss is provided on the top of the fixed ratchet, which is plugged into the long hole; a positioning screw is connected to the center of the top surface of the long boss, and the bottom surface of the bolt head of the positioning screw is pressed tightly on the upper end surface of the long hole.
[0007] Four keyways are evenly distributed at the lower end of the spindle, and the pin passes through the universal sleeve and cooperates with the keyway of the spindle; a circular boss is provided on the bottom surface of the spindle, one end of the spring II is sleeved on the circular boss, and the other end is supported on the bottom surface of the inner cavity of the universal sleeve; the bottom surface of the universal sleeve is a British standard 12.5mm screwdriver bit interface, and the screwdriver bit interface is connected to the screwdriver bit.
[0008] The axis of the core shaft and the axis of the universal sleeve are concentric in the non-working state; in the working state, the maximum angle compensation value between the axis of the universal sleeve and the axis of the core shaft is 5°, and the axial length compensation value L is 2 mm.
[0009] The fixed ratchet is a disc structure with 12 meshing teeth processed on the circumference of the lower surface, the tooth angle in the forward direction is 15°, and the tooth angle in the reverse direction is 45°; the sliding ratchet is a disc structure with 12 meshing teeth processed on the circumference of the upper surface, the tooth shape is consistent with that of the fixed ratchet, and they mesh with each other during operation.
[0010] The adjustable torque-type tool holder for connecting the screwdriver bit of the present application adopts the above structure and is suitable for clamping and fastening the threaded connector of the mechanical fixture in the automated processing line or automated processing unit. It has a simple structure and sensitive clamping torque, which not only improves production efficiency and reduces production costs, but also effectively reduces auxiliary working hours, while ensuring the stability of the clamping accuracy of the workpiece. BRIEF DESCRIPTION OF THE DRAWINGS
[0011] Figure 1 A three-dimensional view of an adjustable torque handle for connecting a bit.
[0012] Figure 2 Front view of the adjustable torque handle with screwdriver bit attached (without protective cover).
[0013] Figure 3 A cross-sectional view of an adjustable torque handle for connecting a bit.
[0014] Figure 4 Schematic diagram of the top structure of the outer shell.
[0015] Figure 5 A three-dimensional diagram of a fixed ratchet.
[0016] Figure 6 A cross-sectional view of a sliding ratchet.
[0017] Figure 7 This is the application state diagram of the application structure. DETAILED DESCRIPTION
[0018] like Figures 1 to 3 As shown, an adjustable torque-type tool handle connected to a screwdriver bit comprises a Latin 1 and a tool handle 2, an outer shell 3 is connected below the tool handle 2, rectangular openings are symmetrically provided on both sides of the outer shell 3, and a protective cover 12 is connected to the rectangular opening; an end cover 7 is connected to the bottom of the outer shell 3; a fixed ratchet 4, a sliding ratchet 5 and a spindle 9 are arranged in the inner cavity of the outer shell 3 from top to bottom, wherein the upper end of the fixed ratchet 4 is connected to the top surface of the outer shell 3, the spindle 9 passes through the end cover 7 and is coaxially matched with the lower end surface of the outer shell 3 through an angular contact ball bearing 13, the top of the spindle 9 is slidably connected to the sliding ratchet 5 through a flat key, and the tooth shape of the upper surface of the sliding ratchet 5 is meshed with the tooth shape of the lower surface of the fixed ratchet 4; an adjusting nut 11 is threadedly connected to the spindle 9, the upper end of the spring I6 is supported on the lower surface of the sliding ratchet 5, and the lower end is supported on the adjusting nut 11; the lower end of the spindle 9 is connected to the screwdriver bit 8 through a universal sleeve 14. When the lower end of the bit 8 contacts and presses the fastener to reach a set pressing force, the sliding ratchet 5 and the fixed ratchet 4 mesh with each other, and the rotational power of the main shaft can be transmitted to the fastener to achieve the tightening of the fastener.
[0019] like Figure 4 As shown, the top of the outer shell 3 is a flange structure, and the flange of the outer shell 3 is connected to the flange at the lower end of the handle 2 by bolts; a keyway in the diameter direction is provided on the upper surface of the outer shell 3, and a keyway is also provided at the corresponding position on the lower surface of the handle 2. The keyway of the outer shell 3 is connected with a positioning key 10 by a screw, and the positioning key 10 is connected with the keyway of the handle 2. A long hole 1-1 is provided on the upper surface of the outer shell 3, and a long boss 1-2 is provided on the top of the fixed ratchet 4. The long boss 1-2 is plugged and matched with the long hole 1-1; the center of the top surface of the long boss 1-2 is connected to the positioning screw 1-3, and the bottom surface of the bolt head of the positioning screw 1-3 is pressed tightly on the upper end surface of the long hole 1-1. The power of the spindle can be transmitted to the outer shell 3 through the positioning key 10, and then the power is transmitted to the fixed ratchet 4 through the positioning screw 1-3.
[0020] Four keyways are evenly distributed at the lower end of the mandrel 9, and the pin 15 passes through the universal sleeve 14 and cooperates with the keyway of the mandrel 9; a circular boss is provided on the bottom surface of the mandrel 9, one end of the spring II16 is sleeved on the circular boss, and the other end is supported on the bottom surface of the inner cavity of the universal sleeve 14; the bottom surface of the universal sleeve 14 is a British standard 12.5mm bit interface, and the bit interface is connected to the bit 8. The bit 8 can be an internal hexagonal bit or an external hexagonal bit, and corresponds to the corresponding tightening screw. The axis of the mandrel 9 is concentric with the axis of the universal sleeve 14 in the non-working state; in the working state, the maximum angle compensation value between the axis of the universal sleeve 14 and the axis of the mandrel 9 is 5°, and the axial length compensation value L is 2mm. The mandrel 9 is connected to the universal sleeve 14 to achieve a slight deflection rotation of the bit 8, solving the problem of non-coaxiality with the main shaft during the tightening process of the connecting piece.
[0021] like Figure 5 and Figure 6 As shown, the fixed ratchet 4 is a disc structure, with 12 meshing teeth processed on the circumference of the lower surface, the tooth angle in the forward direction is 15°, and the tooth angle in the reverse direction is 45°; the sliding ratchet 5 is a disc structure, with 12 meshing teeth processed on the circumference of the upper surface, the tooth shape is consistent with the fixed ratchet 4, and they mesh with each other during operation.
[0022] The working process of this application is as follows: Figure 7 As shown, in the pre-production preparation stage, the tool holder is transferred from the machine tool equipment to the vertical or horizontal axis of the machine tool spindle, and the spindle is kept in the brake state. Suitable screwdriver bits 8, such as hexagon sockets, hexagon sockets, screwdrivers, etc., can be installed. Open the tool holder protective cover, adjust the adjustment nut 11 to make the fixed ratchet 4 mesh with the sliding ratchet 5, and use a torque wrench to verify whether the disengagement torque of the sliding ratchet in the tool holder at this position is the required torque. After the torque adjustment is completed, reinstall the tool holder protective cover 12. Manually adjust the machine tool coordinate point to the appropriate position for the screwdriver bit to rotate, and the CNC system memorizes the corresponding coordinate point. Given a reasonable spindle speed (S≤100r / min) and number of rotations, set a reasonable safety distance, and finally compile a clamping program for the workpiece to be clamped. After the clamping program is compiled, it can be used for large-scale clamping of workpieces.
Claims
1. A torque-adjustable tool handle connected to a bit, comprising a threaded rod (1) and a tool handle (2), characterized in that: An outer shell (3) is connected below the handle (2), and rectangular openings are symmetrically provided on both sides of the outer shell (3), and a protective cover (12) is connected to the rectangular openings; an end cover (7) is connected to the bottom of the outer shell (3); a fixed ratchet (4), a sliding ratchet (5) and a core shaft (9) are provided in sequence from top to bottom in the inner cavity of the outer shell (3), wherein the upper end of the fixed ratchet (4) is connected to the top surface of the outer shell (3), and the core shaft (9) passes through the end cover (7) and is connected to the outer shell (3) through an angular contact ball bearing. (13) is coaxially matched with the lower end surface of the outer shell (3), the top of the core shaft (9) is slidably connected to the sliding ratchet (5) through a flat key, and the tooth shape on the upper surface of the sliding ratchet (5) is meshed with the tooth shape on the lower surface of the fixed ratchet (4); the adjusting nut (11) is threadedly connected to the core shaft (9), the upper end of the spring I (6) is supported on the lower surface of the sliding ratchet (5), and the lower end is supported on the adjusting nut (11); the lower end of the core shaft (9) is connected to the bit (8) through a universal sleeve (14).
2. The torque-adjustable tool handle for connecting a screwdriver bit according to claim 1, characterized in that: The top of the outer shell (3) is a flange structure, and the flange of the outer shell (3) is connected to the flange at the lower end of the handle (2) by bolts; a keyway in the diameter direction is provided on the upper surface of the outer shell (3), and a keyway is also provided at a corresponding position on the lower surface of the handle (2); a positioning key (10) is connected to the keyway of the outer shell (3) by screws, and the positioning key (10) is matched and connected to the keyway of the handle (2).
3. The torque-adjustable tool handle for connecting a screwdriver bit according to claim 1, characterized in that: A long hole (1-1) is provided on the upper surface of the outer shell (3), and a long boss (1-2) is provided on the top of the fixed ratchet (4), and the long boss (1-2) is plugged into and matched with the long hole (1-1); the center of the top surface of the long boss (1-2) is connected to a positioning screw (1-3), and the bottom surface of the bolt head of the positioning screw (1-3) is pressed tightly against the upper end surface of the long hole (1-1).
4. The torque-adjustable tool handle for connecting a screwdriver bit according to claim 1, characterized in that: The lower end of the mandrel (9) is evenly distributed with four keyways, and the pin (15) passes through the universal sleeve (14) and cooperates with the keyway of the mandrel (9); a circular boss is provided on the bottom surface of the mandrel (9), one end of the spring II (16) is sleeved on the circular boss, and the other end is supported on the bottom surface of the inner cavity of the universal sleeve (14); the bottom surface of the universal sleeve (14) is a British standard 12.5 mm screwdriver bit interface, and the screwdriver bit interface is connected to the screwdriver bit (8).
5. The torque-adjustable tool handle for connecting a screwdriver bit according to claim 4, characterized in that: The axis of the core shaft (9) and the axis of the universal sleeve (14) are concentric in a non-working state; in a working state, the maximum angle compensation value between the axis of the universal sleeve (14) and the axis of the core shaft (9) is 5°, and the axial length compensation value L is 2 mm.
6. The torque-adjustable tool handle for connecting a screwdriver bit according to claim 1, characterized in that: The fixed ratchet (4) is a disc structure, with 12 meshing teeth processed on the circumference of the lower surface, the tooth profile angle in the forward direction is 15°, and the tooth profile angle in the reverse direction is 45°; the sliding ratchet (5) is a disc structure, with 12 meshing teeth processed on the circumference of the upper surface, the tooth profile is consistent with that of the fixed ratchet (4), and they mesh with each other during operation.