A tooling clamping screw connection device

Abstract

This utility model relates to the field of loading and unloading tooling, and discloses a tooling clamping screw connection device, including a tooling base plate for fixed installation on a machine tool horizontal worktable; a connecting flange fixedly disposed at the center of the tooling base plate, with at least one radially extending groove on its upper end face; a screw, the shaft of which is used to axially pass through the central through hole of the workpiece; and a locating pin vertically fixed to the bottom end of the screw; wherein, the locating pin can be inserted into the groove of the connecting flange, and locking or separating from the connecting flange can be achieved by rotating the screw, forming a docking structure that can be quickly connected or disconnected. This utility model can significantly simplify the loading and unloading process of heavy and large workpieces while ensuring clamping reliability, effectively reducing the lifting height required for operation and related safety hazards, and improving production efficiency and operational safety.

Description

Technical Field

[0001] This utility model relates to the field of loading and unloading tooling, and in particular to a tooling clamping screw connection device. Background Technology

[0002] In the field of mechanical manufacturing, especially in the post-casting cleaning, welding, or machining processes involving large, heavy parts (such as motor housings and engine blocks), efficient and safe workpiece clamping is crucial. These parts are typically large and heavy, requiring stable and reliable tooling fixtures to secure them to machine tool tables (such as boring machines, milling machines, and machining centers) or welding stations.

[0003] Currently, widely used tooling fixtures often adopt a "base plate + center clamping screw" structure. Specifically, the tooling base plate is fixed to the machine tool worktable, a long screw passes through the center hole of the base plate, the workpiece is placed on the screw and then on the base plate, and finally clamped from above by a pressure plate and a locking nut. While this structure is simple and reliable, it has significant drawbacks in practical applications, especially for heavy workpieces with considerable height:

[0004] Low loading and unloading efficiency and significant safety hazards: Because the screw is usually quite long (it needs to penetrate the entire height of the workpiece and extend sufficiently to install the pressure plate and nut), before installing the workpiece, the screw needs to be pre-passed through the base plate and raised to a sufficient height so that it can be smoothly fitted onto the screw when the workpiece is hoisted into place. Similarly, when disassembling the workpiece, the nut needs to be completely unscrewed and the pressure plate removed before the heavy workpiece, along with the long screw, is lifted and removed from the base plate. During this process:

[0005] High lifting height: The workpiece must be lifted to a height exceeding the top of the screw before it can be inserted or removed, which increases the difficulty and instability of hoisting.

[0006] Clumsy operation: The long screw is prone to shaking and bumping during hoisting, which increases the difficulty of operation and the risk of damage to the workpiece and equipment.

[0007] Significant safety hazards: In confined spaces or scenarios involving frequent loading and unloading, operators are at high risk of being struck by wobbling screws or being injured by accidentally falling workpieces while working near heavy workpieces and protruding screws.

[0008] Long auxiliary time: Each loading and unloading requires handling the overall lifting and lowering of the screw, which increases the auxiliary time for non-cutting / welding and reduces the overall production efficiency.

[0009] High requirements for hoisting space: The hoisting path of the workpiece needs to take into account the protrusion height of the screw, requiring a larger unobstructed space above the working area.

[0010] Therefore, there is an urgent need for an improved tooling clamping and connection device that can significantly simplify the loading and unloading process of heavy and large workpieces while ensuring clamping reliability, effectively reduce the lifting height required for operation and related safety hazards, and improve production efficiency and operational safety. Utility Model Content

[0011] The technical problem to be solved by this utility model is to provide a tooling clamping screw connection device that can significantly simplify the loading and unloading process of heavy and large workpieces while ensuring clamping reliability, effectively reduce the lifting height required for operation and related safety hazards, and improve production efficiency and operational safety.

[0012] This utility model discloses a tooling clamping screw connection device, including a tooling base plate for fixed installation on a machine tool horizontal worktable;

[0013] A connecting flange is fixedly installed at the center of the tooling base plate, and its upper end face is provided with at least one radially extending groove;

[0014] The screw, whose body is used to pass axially through the center hole of the workpiece;

[0015] A positioning pin is vertically fixed to the bottom end of the screw.

[0016] The positioning pin can be inserted into the groove of the connecting flange, and can be locked or separated from the connecting flange by rotating the screw, forming a docking structure that can be quickly connected or disconnected.

[0017] This utility model discloses a tooling clamping screw connection device, wherein the groove of the connecting flange is L-shaped, including a vertically penetrating inlet section and a horizontal locking section communicating with the inlet section;

[0018] After the positioning pin enters the groove through the inlet section, the rotating screw causes the positioning pin to engage with the horizontal locking section to complete the axial limiting.

[0019] This utility model discloses a tooling clamping screw connection device, wherein the angle of the rotating screw is 90°±5°, and after rotation, the axis of the positioning pin is perpendicular to the extension direction of the groove inlet section, thereby achieving mechanical self-locking.

[0020] This utility model discloses a tooling clamping screw connection device, wherein the tooling clamping screw connection device further includes a pressure plate and a locking nut, the screw passes through the workpiece and extends out of its top surface, the pressure plate is sleeved on the screw and presses the end face of the workpiece, and the locking nut is screwed onto the top of the screw to provide axial clamping force.

[0021] This utility model discloses a tooling clamping screw connection device, wherein the positioning pin and the screw are connected by interference fit or thread.

[0022] This utility model discloses a tooling clamping screw connection device, wherein the connecting flange is fixed to the tooling base plate by bolts or welding, and a wear-resistant bushing is provided at the bottom of its groove to reduce the wear of the positioning pin shaft during rotation.

[0023] This utility model discloses a tooling clamping screw connection device, wherein the tooling base plate is provided with an array of threaded holes to adapt to the positioning and clamping requirements of workpieces of different sizes.

[0024] This utility model discloses a tooling clamping screw connection device, wherein the groove of the connecting flange is a T-shaped structure, including a vertically penetrating inlet section and a horizontal locking section communicating with the inlet section.

[0025] The difference between this utility model and the prior art is that this utility model's tooling clamping screw connection device reduces the lifting height by setting a detachable structure for the screw, enabling quick separation and connection, shortening the length of the connection part, significantly reducing the risk of workpiece swaying, avoiding collision accidents caused by insufficient operating space, improving inherent safety, eliminating safety hazards of operating long screws, and further improving loading and unloading efficiency.

[0026] The tooling clamping screw connection device of this utility model will be further described below with reference to the accompanying drawings. Attached Figure Description

[0027] Figure 1 This is an isometric drawing of a tooling clamping screw connection device;

[0028] Figure 2 yes Figure 1 Internal structure diagram.

[0029] In the diagram:

[0030] 1. Tooling base plate; 2. Connecting flange; 20. Groove; 3. Positioning pin; 4. Screw; 5. Pressure plate; 6. Locking nut; 7. Workpiece. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0032] Please see Figure 1 - Figure 2 Specifically, the following embodiments are included:

[0033] Example 1:

[0034] A tooling clamping screw connection device includes a tooling base plate 1, which is used to fix and install on the horizontal worktable of a machine tool;

[0035] The connecting flange 2 is fixedly installed at the center of the tooling base plate 1, and its upper end face is provided with at least one radially extending groove 20;

[0036] Screw 4, whose body is used to pass axially through the center through hole of workpiece 7;

[0037] The positioning pin 3 is vertically fixed to the bottom end of the screw 4;

[0038] The positioning pin 3 can be inserted into the groove of the connecting flange 2, and can be locked or separated from the connecting flange 2 by rotating the screw 4, forming a docking structure that can be quickly connected or disconnected.

[0039] The screw 4 passes through the workpiece 7 and extends out of its top surface. The pressure plate 5 is sleeved on the screw 4 and presses the end face of the workpiece. The lock nut 6 is screwed to the top of the screw 4 to provide axial clamping force.

[0040] A method for assembling and disassembling a tooling clamping screw connection device includes the following steps:

[0041] Clamping process:

[0042] Hoist workpiece 7 onto fixture base plate 1;

[0043] Hold the screw 4 and insert the positioning pin 3 at its bottom end into the groove 20 inlet section of the connecting flange 2;

[0044] Rotate the screw 490° to make the positioning pin 3 enter the horizontal locking section;

[0045] Install the pressure plate 5 and tighten the lock nut 6 to complete the workpiece fixation;

[0046] Disassembly process:

[0047] Loosen the locking nut 6 and remove the pressure plate 5;

[0048] Rotate the screw 490° in the opposite direction to disengage the positioning pin 3 from the horizontal locking section;

[0049] The vertical lifting screw 4 causes the positioning pin 3 to retract from the groove 20;

[0050] 7. Lift the workpiece away.

[0051] This new invention reduces the lifting height by setting a detachable structure for the screw 4, enabling quick separation and connection. This shortens the length of the connection part, significantly reducing the risk of workpiece swaying, avoiding collision accidents caused by insufficient operating space, improving inherent safety, eliminating safety hazards of operating long screws, and further improving loading and unloading efficiency.

[0052] For further explanation of this example, refer to Figures 1-2 The groove 20 of the connecting flange 2 is an L-shaped or T-shaped structure, including a vertically penetrating inlet section and a horizontal locking section connected to the inlet section;

[0053] After the positioning pin 3 enters the groove 20 through the inlet section, the rotating screw 4 causes the positioning pin 3 to be engaged in the horizontal locking section to complete the axial limitation.

[0054] The angle of the rotating screw 4 is 90°±5°. After rotation, the axis of the positioning pin 3 is perpendicular to the extension direction of the inlet section of the groove 20, thus achieving mechanical self-locking.

[0055] Under machine tool vibration environment, the pin shaft is subject to dual constraints of shear force and friction force. The tensile strength of the connection structure of this application is greater than that of the traditional welded fixed screw, and it has strong vibration resistance.

[0056] For further explanation of this example, refer to Figures 1-2 The positioning pin 3 and the screw 4 are connected by interference fit or thread to avoid connection failure caused by repeated disassembly and assembly.

[0057] For further explanation of this example, refer to Figures 1-2 The connecting flange 2 is fixed to the tooling base plate 1 by bolts or welding, and a wear-resistant bushing is provided at the bottom of its groove 20 to reduce the wear of the positioning pin 3 when it rotates.

[0058] For further explanation of this example, refer to Figures 1-2 The tooling base plate 1 is provided with a T-slot or an array of threaded holes to adapt to the positioning and clamping requirements of workpieces of different sizes, and positioning blocks can be flexibly installed for auxiliary support.

[0059] The embodiments described above are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Various modifications and improvements made to the technical solutions of the present utility model by those skilled in the art without departing from the spirit of the present utility model should fall within the protection scope defined by the claims of the present utility model.

Claims

1. A tool clamp screw connection device, characterized by: include Tooling base plate (1) is used for fixed installation on the horizontal worktable of the machine tool; A connecting flange (2) is fixedly installed at the center of the tooling base plate (1), and its upper end face is provided with at least one radially extending groove (20); The screw (4) has its body axially passing through the central through hole of the workpiece (7); The positioning pin (3) is vertically fixed to the bottom end of the screw (4); The positioning pin (3) can be inserted into the groove of the connecting flange (2) and locked or separated from the connecting flange (2) by rotating the screw (4), forming a docking structure that can be quickly connected or disconnected.

2. A fixture clamp screw connection device according to claim 1, characterized in that: The groove (20) of the connecting flange (2) is an L-shaped structure, including a vertically penetrating inlet section and a horizontal locking section connected to the inlet section; After the positioning pin (3) enters the groove (20) through the inlet section, the rotating screw (4) causes the positioning pin (3) to engage with the horizontal locking section to complete the axial limiting.

3. The tooling clamping screw connection device according to claim 2, characterized in that: The angle of the rotating screw (4) is 90°±5°. After rotation, the axis of the positioning pin (3) is perpendicular to the extension direction of the groove (20) entrance section, thus achieving mechanical self-locking.

4. The tooling clamping screw connection device according to claim 3, characterized in that: The tooling clamping screw connection device further includes a pressure plate (5) and a locking nut (6). The screw (4) passes through the workpiece (7) and extends out of its top surface. The pressure plate (5) is sleeved on the screw (4) and presses the end face of the workpiece. The locking nut (6) is screwed onto the top of the screw (4) to provide axial clamping force.

5. The tooling clamping screw connection device according to claim 4, characterized in that: The positioning pin (3) and the screw (4) are connected by interference fit or thread.

6. The tooling clamping screw connection device according to claim 5, characterized in that: The connecting flange (2) is fixed to the tooling base plate (1) by bolts or welding. The bottom of its groove (20) is provided with a wear-resistant bushing to reduce the wear of the positioning pin (3) when it rotates.

7. The tooling clamping screw connection device according to claim 6, characterized in that: The tooling base plate (1) is provided with an array of threaded holes.

8. The tooling clamping screw connection device according to claim 7, characterized in that: The groove (20) of the connecting flange (2) is a T-shaped structure, including a vertically penetrating inlet section and a horizontal locking section connected to the inlet section.

Images