Positioning clamp for machining

Abstract

The utility model discloses a positioning clamp for machining, and belongs to the technical field of machining. A placement block is welded to the top face of the bottom plate, limiting assemblies are installed on the two opposite sides of the top face of the bottom plate, each limiting assembly comprises a first electric push rod, a limiting rod is installed at the top end of each first electric push rod, and a fixing screw is connected to each limiting rod in a penetrating and threaded mode. A positioning assembly is installed in the middle of the top face of the bottom plate and comprises an outer frame. The two opposite sides of the outer wall of the outer frame are each provided with two adjusting grooves, one side of the top face of the outer frame is fixedly connected with a connecting plate, a second electric push rod is installed on one side of the connecting plate, a limiting block is installed at the bottom end of the second electric push rod, and adjusting screws are connected to the adjusting grooves in a penetrating and threaded mode. Through cooperation of the limiting assembly and the positioning assembly, the first electric push rod drives the limiting rod to vertically move so as to adapt to workpieces with different heights, the design that the fixing screw rod is combined with the notch facilitates position calibration and locking in the vertical direction, and the positioning precision is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of machining technology, specifically a positioning fixture for machining. Background Technology

[0002] In the field of machining, positioning fixtures are key process equipment that ensures the accurate fixing and relative position of workpieces during machining. They are widely used in various machine tools such as lathes, milling machines, planers, grinders, and drills, as well as in automated production lines. Their core function is to ensure that the workpiece has a definite and unique position relative to the tool and machine tool coordinate system during machining by using rationally designed positioning elements, clamping mechanisms, and auxiliary support structures, thereby ensuring the consistency and stability of machining accuracy.

[0003] Existing positioning fixtures have the problem of inconvenient height adjustment, making it difficult to quickly adapt to workpieces of different heights. Adjusting the positioning range for workpieces of different sizes is also cumbersome. Furthermore, the clamping mechanism lacks vertical clamping stability, which can easily cause workpiece shifting or shaking, making it inconvenient for daily use. Utility Model Content

[0004] The purpose of this utility model is to provide a positioning fixture for machining. Through the cooperation of the limiting component and the positioning component, the first electric push rod drives the limiting rod to move vertically to adapt to workpieces of different heights. The fixed screw combined with the slot design facilitates vertical position calibration and locking, ensuring positioning accuracy.

[0005] This utility model is achieved through the following technical solution:

[0006] This utility model is a positioning fixture for machining, including a base plate, a placement block welded to the top surface of the base plate, and limit components installed on opposite sides of the top surface of the base plate. The limit components include a first electric push rod, a limit rod installed at the top of the first electric push rod, and a fixing screw threaded through the limit rod. A positioning component is installed in the middle of the top surface of the base plate. The positioning component includes an outer frame, and two adjustment grooves are opened on opposite sides of the outer wall of the outer frame. A connecting plate is fixedly connected to one side of the top surface of the outer frame, and a second electric push rod is installed on one side of the connecting plate. A limit block is installed at the bottom of the second electric push rod, and an adjustment screw threaded through the adjustment groove.

[0007] Furthermore, threaded holes are provided at corresponding positions on both sides of the top surface of the base plate, and the bottom ends of the fixing screws on the two limiting components are threaded to the threaded holes. A slot is provided through the limiting rod, and the top end of the fixing screw is threaded through the slot and connected to the limiting rod.

[0008] Furthermore, "V"-shaped slots are provided on both sides of the top surface of the placement block, and one end of the limiting rod on each of the two limiting components extends and is positioned above the "V"-shaped slot.

[0009] Furthermore, the outer frame is rectangular and surrounds the outer perimeter of the placement block. Openings are provided on the top surface and two opposite side walls of the outer frame. One end of the limiting rod extends through the opening and is located inside the outer frame. There are four adjusting screws, which are threaded through the adjusting grooves and connected to both sides of the outer wall of the outer frame.

[0010] Furthermore, the connecting plate is in the shape of an inverted "L" shape. One end of the second electric push rod is connected to the bottom surface of the short end of the "L" shape of the connecting plate by a bolt thread. The two sides of the limiting block are respectively abutted against the opposite sides of the inner wall of the outer frame. Two triangular locking blocks are provided on both sides of the bottom surface of the limiting block. The limiting block is located above the placement block.

[0011] This utility model has the following beneficial effects:

[0012] This utility model utilizes a combination of a limiting component and a positioning component. The first electric push rod drives the limiting rod to move vertically, adapting to workpieces of different heights. The fixed screw, combined with the slot design, facilitates vertical position calibration and locking, ensuring positioning accuracy. The second electric push rod drives the limiting block, and the triangular locking block on the bottom surface of the limiting block forms a wedge-shaped clamping force with the top surface of the workpiece. While achieving vertical clamping and fixing, the contact between the limiting block and the inner wall of the outer frame ensures the stability of the position during clamping. Thus, the entire fixture has the ability to quickly position, accurately clamp, and stably process workpieces of different specifications.

[0013] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the positioning fixture.

[0015] Figure 2 This is a schematic diagram of the internal structure of the positioning fixture;

[0016] Figure 3 This is a structural diagram of the positioning component;

[0017] Figure 4 This is a structural diagram of the base plate, placement block, and limiting assembly.

[0018] In the diagram: 1. Base plate; 2. Placement block; 3. Limiting component; 301. First electric push rod; 302. Limiting rod; 303. Fixing screw; 4. Adjusting screw; 5. Positioning component; 501. Outer frame; 502. Adjusting groove; 503. Connecting plate; 504. Second electric push rod; 505. Limiting block. Detailed Implementation

[0019] 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.

[0020] Please see Figure 1-4This utility model provides a technical solution: a positioning fixture for machining, including a base plate 1, a placement block 2 welded to the top surface of the base plate 1, the placement block 2 being used to support the workpiece to be processed, and limit components 3 installed on opposite sides of the top surface of the base plate 1, the limit components 3 including a first electric push rod 301, and a limit rod 302 installed at the top of the first electric push rod 301, the limit rod 302 being driven to move vertically by the extension and retraction of the first electric push rod 301 to adapt to the positioning requirements of workpieces of different heights, threaded holes are opened at corresponding positions on both sides of the top surface of the base plate 1, the bottom ends of the fixing screws 303 on the two limit components 3 are threaded to the threaded holes, the limit rod 302 is provided with a through slot, and the top end of the fixing screw 303 is through... The slotted thread is connected to the limiting rod 302. After vertical position calibration, it is locked and fixed by the fixing screw 303. The limiting rod 302 is threaded through and connected to the fixing screw 303. The top surface of the placement block 2 has "V" shaped slots on both sides. The "V" shaped slots can form the initial positioning of the workpiece. One end of the limiting rod 302 on the two limiting components 3 extends and is set above the "V" shaped slots respectively, forming a limit on both sides of the workpiece. It works with the "V" shaped slots to achieve horizontal positioning constraint of the workpiece. The positioning component 5 is installed in the middle of the top surface of the base plate 1. The positioning component 5 includes an outer frame 501. The outer wall of the outer frame 501 has two adjustment slots 502 on opposite sides. The connecting plate 5 is fixedly connected to one side of the top surface of the outer frame 501. 03. A second electric push rod 504 is installed on one side of the connecting plate 503. A limit block 505 is installed at the bottom end of the second electric push rod 504. The connecting plate 503 is in the shape of an inverted "L". One end of the second electric push rod 504 is connected to the bottom surface of the short end of the "L"-shaped plate of the connecting plate 503 by bolt thread. The limit blocks 505 are respectively set on opposite sides of the inner wall of the outer frame 501. Two triangular locking blocks are set on both sides of the bottom surface of the limit blocks 505. The limit blocks 505 are located above the placement block 2. The top surface of the workpiece contacts and forms a wedge clamping force. At the same time, the limit blocks 505 move vertically along the inner wall of the outer frame 501 to ensure the stability and positioning accuracy of the position during the clamping process, and realize the vertical clamping and fixing of the workpiece. An adjusting screw 4 is threaded through the adjusting groove 502. The outer frame 501 is rectangular and surrounds the placement block 2. Openings are provided on the top surface and two opposite side walls of the outer frame 501. One end of the limiting rod 302 extends through the opening and is located inside the outer frame 501. There are four adjusting screws 4, which are threaded through the adjusting groove 502 and connected to both sides of the outer wall of the outer frame 501. The extension length of the adjusting screw 4 can be adjusted by rotating it, thereby further limiting the outer wall of the workpiece to adapt to the positioning range of workpieces of different sizes. The first electric push rod 301 and the second electric push rod 504 mentioned above are existing technologies and will not be described in detail.

[0021] First, connect the internal power supply to the electrical equipment in this device. Place the device in the designated working position and place the workpiece to be processed in the "V"-shaped groove on the top surface of the placement block 2 to achieve initial positioning. By adjusting the extension and retraction of the first electric push rod 301 in the two-sided limiting components 3, the limiting rod 302 is moved vertically to the appropriate workpiece height. Then, rotate the fixing screw 303 to make its top end slightly adjust along the groove of the limiting rod 302 and lock it, so that one end of the limiting rod 302 extends above the "V"-shaped groove to form a horizontal limiting constraint on both sides of the workpiece. Then, according to... The adjusting screw 4 on the outer wall of the workpiece size rotating frame 501 can be adjusted by rotating the adjusting screw 4 to adjust the extension length of the adjusting screw 4, thereby further limiting the outer wall of the workpiece to adapt to the positioning range of workpieces of different sizes. Then, the second electric push rod 504 is activated, which drives the limiting block 505 to descend vertically along the inner wall of the outer frame 501. The bottom triangular block contacts the top surface of the workpiece and forms a wedge clamping force, completing the vertical clamping and fixing of the workpiece. At this point, the entire positioning fixture has completed the positioning and clamping of the workpiece, and subsequent machining operations can be performed.

[0022] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A positioning fixture for machining, comprising a base plate (1), characterized in that: The bottom plate (1) is welded to the top surface of the base plate (1) and the bottom plate (1) is equipped with limit components (3) on opposite sides of the top surface. The limit components (3) include a first electric push rod (301), the top of the first electric push rod (301) is equipped with a limit rod (302), and a fixing screw (303) is threaded through the limit rod (302). The bottom plate (1) is equipped with a positioning component (5) in the middle of the top surface. The positioning component (5) includes an outer frame (501), and two adjustment grooves (502) are opened on opposite sides of the outer wall of the outer frame (501). A connecting plate (503) is fixedly connected to one side of the top surface of the outer frame (501). A second electric push rod (504) is installed on one side of the connecting plate (503). A limit block (505) is installed at the bottom end of the second electric push rod (504), and an adjustment screw (4) is threaded through the adjustment groove (502).

2. The positioning fixture for machining according to claim 1, characterized in that, The bottom plate (1) has threaded holes on both sides of the top surface. The bottom ends of the fixing screws (303) on the two limiting components (3) are threaded to the threaded holes. The limiting rod (302) has a slot through it. The top end of the fixing screw (303) is threaded to the limiting rod (302) through the slot.

3. A positioning fixture for machining according to claim 2, characterized in that, The top surface of the placement block (2) is provided with "V" shaped slots on both sides, and one end of the limiting rod (302) on the two limiting components (3) extends and is respectively set above the "V" shaped slots.

4. A positioning fixture for machining according to claim 1, characterized in that, The outer frame (501) is rectangular and surrounds the outer perimeter of the placement block (2). The top surface and two opposite side walls of the outer frame (501) are provided with openings. One end of the limiting rod (302) extends through the opening and is disposed inside the outer frame (501). There are four adjusting screws (4), which are threaded through the adjusting grooves (502) and connected to both sides of the outer wall of the outer frame (501).

5. A positioning fixture for machining according to claim 4, characterized in that, The connecting plate (503) is in the shape of an inverted "L" shape. One end of the second electric push rod (504) is connected to the bottom surface of the short end of the "L" shape of the connecting plate (503) by a bolt thread. The limiting block (505) is respectively abutted against the opposite sides of the inner wall of the outer frame (501). Two triangular locking blocks are provided on both sides of the bottom surface of the limiting block (505). The limiting block (505) is located above the placement block (2).

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