A machining fixture for a wrench

Abstract

A machining clamp of a wrench relates to a wrench. A mold core is used for accommodating a plurality of wrench heads. The mold core comprises a panel, a fixed mold block arranged on the top surface of the panel, and a movable mold block adjustably arranged on the side of the fixed mold block. A space is formed between the upper part of the movable mold block and the fixed mold block, and a limiting cavity is arranged in the space. The limiting cavity is in a narrow-top-wide-bottom structure. A mold base is provided with a top hollow groove matched with the mold core, and the mold core is fixedly arranged in the top hollow groove. A side linear driving mechanism is fixedly arranged on the end of the mold base, and a tongue is arranged in the mold base, one end of which is fixedly connected with the side linear driving mechanism, and the other end of which is extended out through the piston rod of the side linear driving mechanism and is pressed into the space between the movable mold block and the fixed mold block. Two sets of mold cores can be matched, and the machining efficiency can be improved by alternating use.

Description

Technical Field

[0001] This utility model relates to a wrench, and more particularly to a wrench processing fixture. Background Technology

[0002] A wrench is a hand or machine tool used to tighten or loosen fasteners such as bolts and nuts. Its core function is to achieve the installation and removal of fasteners by transmitting torque. The main body is mostly a rigid metal structure, and common materials include carbon steel and alloy steel. Stainless steel is used in some high-precision applications.

[0003] In the wrench manufacturing process, the clamping and positioning of the wrench head is a crucial step in ensuring processing accuracy and efficiency. Traditional wrench processing fixtures typically use a single clamping method, meaning that only one wrench head can be fixed and clamped at a time. With this method, after each processing cycle, the machine must be stopped to remove the finished product and re-clamp the new workpiece. This not only significantly extends the processing cycle of a single product and reduces batch production efficiency, but also, frequent clamping operations are prone to reduced processing consistency due to human alignment errors, affecting product accuracy and stability. Furthermore, the structure of a single-clamp fixture is often specifically adapted to a particular wrench head model. When switching to different specifications, the corresponding fixture still needs to be replaced, further increasing equipment investment and changeover time, making it difficult to meet the efficient and flexible processing requirements of large-scale production. Utility Model Content

[0004] To address the above problems, this utility model provides a wrench processing fixture with a compact structure that can simultaneously process multiple wrench heads, thereby improving wrench processing efficiency.

[0005] The technical solution of this utility model is: A wrench machining fixture, comprising: A mold core for accommodating and fixing multiple wrenches; the mold core includes: panel; A fixed module is fixedly installed on the top surface of the panel; The moving module is adjustablely and fixedly installed on the side of the fixed module; a limiting cavity that is adapted to the wrench is formed between the moving module and the upper part of the fixed module, and a gap is provided between the bottom of the moving module and the wrench; the cross-section of the limiting cavity is narrow at the top and wide at the bottom. The mold base is provided with a top hollowed-out groove that matches the mold core, and the mold core is fixedly installed in the top hollowed-out groove; The side linear drive mechanism is fixedly mounted at the end of the mold base; and The pressure tongue is located inside the mold base. One end is fixedly connected to the side linear drive mechanism, and the other end extends out through the piston rod of the side linear drive mechanism and is pressed into the gap between the moving module and the stationary module.

[0006] Specifically, the bottom surface of the panel is a flat surface.

[0007] Specifically, multiple springs are provided between the moving module and the stationary module.

[0008] Specifically, the moving module and / or fixed module is provided with a receiving cavity adapted to the spring.

[0009] Specifically, the fixed module has a first arc-shaped surface facing the moving module; The moving module has a second arc-shaped surface facing the stationary module; The first arc-shaped surface and the second arc-shaped surface form a limiting cavity that is adapted to the wrench head.

[0010] Specifically, the top surfaces of the moving module and the fixed module are each on a plane.

[0011] Specifically, the mold core is fixedly installed inside the mold base by a connector.

[0012] Specifically, the mold base is provided with a fixed front linear drive mechanism on its side; The side of the mold base is provided with a hollow area adapted to the front linear drive mechanism, and the piston rod of the front linear drive mechanism extends out and presses against the moving module.

[0013] Specifically, both ends of the panel extend from the ends of the fixed module; The top hollow groove of the mold base is provided with a slot that matches the panel.

[0014] Specifically, the fixed module and the moving module have the same length.

[0015] This utility model includes a mold core, a mold base, and a side linear drive mechanism. The fixture body consists of a fixed module and a moving module. The moving module and the fixed module are machined to fit the wrench head. The fixed module and the insert are fixed with screws. A spring is placed in the spring hole of the fixed module. The moving module and the fixed module are connected by positioning screws. The moving module can slide through the positioning bolt. The moving module and the fixed module are kept in a non-contact state under the action of spring force and bolt. The wrench head to be processed is placed side by side in the mold core. The mold core, forming a whole, is placed in the corresponding slot in the mold base. Two linear drive mechanisms fix the mold core on the mold base from two directions respectively. The product can be processed by moving the worktable in a linear direction. Two sets of mold cores can be used alternately to improve processing efficiency. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention. Figure 2 This is a schematic diagram of the three-dimensional structure of the mold core in its disassembled state; Figure 3A three-dimensional structural diagram of a disc milling cutter in machining mode, with the mold base set on a movable worktable; Figure 4 This is a schematic diagram of the three-dimensional structure of the wrench head; In the diagram, 100 is the mold core, 110 is the insert, 120 is the fixed module, 121 is the first arc surface, and 130 is the moving module. 200 is the wrench head, 300 is the mold base. 400 is a side linear drive mechanism. 500 is a tongue depressor. 600 is the front linear drive mechanism. Detailed Implementation

[0017] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0018] In the description of this utility model, it should be understood that the terms "upper," "lower," "left," "right," "vertical," "horizontal," 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. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0019] 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.

[0020] The following is for reference. Figure 1-4 Describe this utility model; A wrench processing fixture includes a mold core 100, a mold base 300, a side linear drive mechanism 400, and a pressure tongue 500; Mold core 100 is used to accommodate and fix multiple wrenches 200, such as Figure 4 As shown, the top two sides of the wrench head 200 are simultaneously milled by a pair of disc milling cutters; the mold core 100 includes: Panel 110 has a flat bottom surface; The fixed module 120 is fixedly disposed on the top surface of the panel 110; The moving module 130 is adjustablely fixed on the side of the fixed module (120) by positioning bolts; a limiting cavity adapted to the wrench head 200 is formed between the upper part of the moving module 130 and the fixed module 120, and a gap is provided between the bottoms; the cross-section of the limiting cavity is narrow at the top and wide at the bottom. In this invention, multiple springs are provided between the moving module 130 and the fixed module 120. In order to improve the stability of the springs, the moving module 130 and / or the fixed module 120 are provided with receiving cavities adapted to the springs.

[0021] In this case, the limiting cavity is formed as follows: The stationary module 120 is provided with a first arc-shaped surface 121 on the side facing the moving module 130; The moving module 130 has a second arc-shaped surface facing the stationary module 120; The first arc-shaped surface 121 and the second arc-shaped surface form a limiting cavity that is adapted to the wrench head 200.

[0022] The top surfaces of the moving module 130 and the fixed module 120 are respectively on the same plane.

[0023] The fixing methods between the mold core 100 and the mold base 300 have various forms in the prior art, such as: Method 1: The mold core 100 is fixedly installed in the mold base 300 by means of a connector.

[0024] Method 2: A front linear drive mechanism 600 is fixedly installed on the side of the mold base 300; The mold base 300 has a hollow area on its side that is adapted to the front linear drive mechanism 600. The piston rod of the front linear drive mechanism 600 extends out and presses against the moving module 130.

[0025] The front linear drive mechanism 600 of this case includes a front hydraulic cylinder, a front air cylinder, or a front electric push rod.

[0026] The two ends of the panel 110 extend from the end of the fixed module 120, that is, they are provided with protruding edges; The top hollowed-out groove of the mold base 300 has a slot that fits the insert 110. The mold core 100 is pre-inserted into the slot through the insert 110 and then pressed and secured by the front linear drive mechanism 600.

[0027] In this case, the fixed module 120 and the moving module 130 have the same length.

[0028] The mold base 300 is provided with a top hollowed-out groove that is adapted to the mold core 100, and the mold core 100 is fixedly disposed in the top hollowed-out groove; A side linear drive mechanism 400 is fixedly disposed at the end of the mold base 300; A pressure tongue 500, located within the mold base 300, has one end fixedly connected to the side linear drive mechanism 400, and the other end extends through the piston rod of the side linear drive mechanism 400, pressing into the gap between the moving module 130 and the fixed module 120, thereby securing the wrench head 200. In this case, the side linear drive mechanism 400 includes a side hydraulic cylinder, a side pneumatic cylinder, or a side electric push rod.

[0029] The method of using the device in this case is as follows: Figure 3 As shown, the fixture body consists of a fixed module 120 and a moving module 130. The moving module 130 and the fixed module 120 are machined to fit the wrench head 200. The fixed module 120 is fixed to the insert plate 110 with screws. A spring is placed in the spring hole of the fixed module 120. The moving module 130 and the fixed module 120 are connected by positioning screws. The moving module 130 can slide through the positioning bolt. The moving module 130 and the fixed module 120 are kept in a non-fitted state under the action of spring force and bolt. The wrench head to be processed is placed side by side in the mold core 100. The mold core 100, which forms a whole, is placed in the corresponding slot in the mold base 300. Two linear drive mechanisms fix the mold core on the mold base from two directions respectively. The product can be processed by moving the worktable in a linear direction. Two sets of mold cores 100 can be used alternately to improve processing efficiency.

[0030] Regarding the information disclosed in this case, the following points need to be clarified: (1) The accompanying drawings of the embodiments disclosed in this case only involve the structures involved in the embodiments disclosed in this case. Other structures can refer to the general design. (2) Where there is no conflict, the embodiments and features disclosed in this case can be combined with each other to obtain new embodiments; The above are merely specific embodiments disclosed in this case, but the scope of protection of this disclosure is not limited thereto. The scope of protection disclosed in this case shall be determined by the scope of protection of the claims.

Claims

1. A wrench machining fixture, characterized in that, include: A mold core (100) for accommodating and fixing multiple wrenches (200); the mold core (100) includes: Panel (110); A fixed module (120) is fixedly disposed on the top surface of the panel (110); The moving module (130) is adjustable and fixedly disposed on the side of the fixed module (120); a limiting cavity adapted to the wrench head (200) is formed between the upper part of the moving module (130) and the fixed module (120), and a gap is provided between the bottoms; the cross-section of the limiting cavity is narrow at the top and wide at the bottom. The mold base (300) is provided with a top hollowed-out groove that is adapted to the mold core (100), and the mold core (100) is fixedly disposed in the top hollowed-out groove; A side linear drive mechanism (400) is fixedly installed at the end of the mold base (300); The pressure tongue (500) is located inside the mold base (300). One end is fixedly connected to the side linear drive mechanism (400), and the other end extends out through the piston rod of the side linear drive mechanism (400) and is pressed into the gap between the moving module (130) and the fixed module (120).

2. The wrench processing fixture according to claim 1, characterized in that, The bottom surface of the panel (110) is a flat surface.

3. The wrench processing fixture according to claim 1, characterized in that, Multiple springs are provided between the moving module (130) and the stationary module (120).

4. The wrench processing fixture according to claim 3, characterized in that, The moving module (130) and / or the stationary module (120) are provided with a receiving cavity adapted to the spring.

5. The wrench machining fixture according to claim 1, characterized in that, The fixed module (120) has a first arc-shaped surface (121) facing the moving module (130); The moving module (130) has a second arc-shaped surface facing the fixed module (120); The first arc-shaped surface (121) and the second arc-shaped surface form a limiting cavity that is adapted to the wrench head (200).

6. The wrench machining fixture according to claim 1, characterized in that, The top surfaces of the moving module (130) and the fixed module (120) are respectively in the same plane.

7. The wrench machining fixture according to claim 1, characterized in that, The mold core (100) is fixedly installed in the mold base (300) by a connector.

8. The wrench machining fixture according to claim 1, characterized in that, The mold base (300) is provided with a fixed front linear drive mechanism (600) on its side; The mold base (300) has a hollow area on its side that is adapted to the front linear drive mechanism (600). The piston rod of the front linear drive mechanism (600) extends out and presses against the moving module (130).

9. A wrench machining fixture according to claim 1, characterized in that, The two ends of the panel (110) extend from the ends of the fixed module (120); The top hollow groove of the mold base (300) is provided with a slot that is compatible with the panel (110).

10. A wrench machining fixture according to claim 9, characterized in that, The fixed module (120) and the moving module (130) have the same length.

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