Part deep hole electric spark drilling clamp

Abstract

The application discloses a part deep-hole electric spark hole drilling clamp, which comprises a base, a clamping assembly for clamping a workpiece is arranged on the base, and a positioning and supporting assembly for positioning and supporting a right-angle special-shaped workpiece; the right-angle positioning space formed by the adjustable positioning mechanism and the fixed clamping plate enables the right-angle special-shaped workpiece to be quickly and accurately placed at a predetermined position, the clamping and alignment time is greatly shortened, and the high repeated positioning precision in batch processing is ensured; the self-adaptive clamp arranged on the movable clamping plate can effectively compensate for the slight size error or irregular shape of the clamping area of the workpiece, realize stable clamping of two-point contact, and avoid workpiece deformation or damage of the positioning reference caused by uneven clamping force; and the positioning and supporting assembly can be flexibly adjusted horizontally, so that the clamp can adapt to various right-angle special-shaped parts within a certain size range, flexible production of a clamp for multiple varieties of parts is realized, and the tooling cost is reduced.

Description

Technical Field

[0001] This application relates to the field of machining fixture technology, specifically a deep hole electrical discharge machining fixture for parts. Background Technology

[0002] In machining, deep-hole EDM is a specialized process for machining high-precision deep holes, particularly for hard, brittle, or complex-shaped metals. For right-angled irregular parts (such as L-shaped brackets or block parts with right-angled steps), positioning and clamping during machining has always been a challenge in the industry. Traditional fixtures are mostly general-purpose vises or specialized tooling. The former struggles to effectively position the right angles of irregular parts, resulting in long alignment times and compromised accuracy; the latter is costly to design and manufacture, lacks flexibility, and cannot adapt to similar parts of different sizes. Therefore, this application proposes a deep-hole EDM fixture to solve these problems. Summary of the Invention

[0003] The technical problem to be solved by this application is to overcome the existing defects and provide a deep hole EDM fixture for parts, which can effectively solve the problems in the background art.

[0004] To achieve the above objectives, this application provides the following technical solution: a deep hole EDM fixture for parts, comprising a base, wherein a clamping assembly for clamping workpieces is provided on the base, and a positioning support assembly for positioning and supporting right-angled irregular workpieces;

[0005] The clamping assembly includes a fixed clamping plate fixed to the base, a movable clamping plate disposed opposite to the fixed clamping plate, and a driving mechanism for driving the movable clamping plate to move toward or away from the fixed clamping plate. An adaptive clamping fixture is provided on the movable clamping plate.

[0006] The positioning support assembly includes a support plate and an adjustable positioning mechanism. A horizontal hole is provided on the base, and the adjustable positioning mechanism is slidably connected in the horizontal hole. The adjustable positioning mechanism can be adjusted and locked in the horizontal direction relative to the base, so that the positioning part on it can form a right-angle positioning space with the inner side of the fixed clamping plate for accommodating and positioning two adjacent right-angled sides of the right-angled irregular workpiece.

[0007] Furthermore, the drive mechanism includes a screw rotatably connected to the movable clamping plate, a mounting plate threadedly engaged with the screw, and a handwheel fixed to the end of the screw, the mounting plate being fixed to the base.

[0008] Furthermore, the base is provided with a vertical hole, and an optical axis is provided in the vertical hole. A movable plate is slidably connected to the optical axis, and the movable clamp and the screw are respectively provided on both sides of the movable plate.

[0009] Furthermore, the adaptive clamp includes two V-shaped clamps and a connecting shaft for connecting the V-shaped clamps and the movable clamp, with V-shaped clamps provided at both the upper and lower ends of the connecting shaft.

[0010] Furthermore, the adjustable positioning mechanism is connected to the support plate via a connecting plate and is slidably connected in the horizontal and vertical holes opened in the base.

[0011] Furthermore, the adjustable positioning mechanism includes a sleeve plate that is horizontally slidably disposed in the transverse hole, a sliding plate that is vertically slidably disposed in the sleeve plate, and a positioning plate fixed to the top of the sliding plate to serve as the positioning part.

[0012] Furthermore, the sliding plate has a strip groove, and the sleeve plate is correspondingly provided with bolts. By tightening the bolts, the sleeve plate can be locked in the horizontal direction and the sliding plate in the vertical direction at the same time.

[0013] Compared with existing technologies, this application utilizes an adjustable positioning mechanism and a fixed clamping plate to form a right-angle positioning space, enabling right-angle irregular workpieces to be placed quickly and accurately in a predetermined position. This significantly shortens the clamping and alignment time and ensures extremely high repeatability in batch processing. The adaptive fixture on the movable clamping plate effectively compensates for minor dimensional errors or irregular shapes in the workpiece clamping area, achieving stable two-point contact clamping and preventing workpiece deformation or damage to the positioning reference due to uneven clamping force. Furthermore, the positioning support assembly can be flexibly adjusted horizontally, allowing this fixture to adapt to various right-angle irregular parts within a certain size range. This enables flexible production of multiple types of parts with a single fixture, reducing tooling costs. Attached Figure Description

[0014] Figure 1 This is the first structural view of this application;

[0015] Figure 2 This is the front view of this application;

[0016] Figure 3 This is a side sectional view of this application;

[0017] Figure 4 This is a second structural view of this application;

[0018] Figure 5 for Figure 4 A magnified view of part A in the image.

[0019] In the diagram: 1. Base; 2. Horizontal hole; 3. Vertical hole; 4. Mounting plate; 5. Fixed clamping plate; 6. Optical axis; 7. Moving plate; 8. Movable clamping plate; 10. Screw; 11. Handwheel; 13. Support plate; 14. Adjustable positioning mechanism; 15. Connecting plate; 16. Positioning plate; 17. Sleeve plate; 18. Sliding plate; 19. Strip groove; 20. Bolt; 21. V-shaped clamping plate; 22. Connecting shaft. Detailed Implementation

[0020] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments in this application (for ease of description and understanding, hereinafter referred to as...), Figure 2 (The above is described above). All other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of this application.

[0021] Please see Figure 1-5 This application provides a technical solution for a deep hole EDM drilling fixture for parts: A deep hole EDM drilling fixture for parts includes a base 1, which is the foundation of the entire fixture and is usually made of steel, possessing sufficient mass and rigidity to maintain stability during the machining process. The base 1 is machined with horizontal holes 2 and vertical holes 3 for mounting and guiding other components.

[0022] The base 1 is provided with a clamping assembly for clamping the workpiece, which is responsible for applying a reliable clamping force to the workpiece.

[0023] The clamping assembly includes a fixed clamping plate 5 fixed on the base 1, a movable clamping plate 8 disposed opposite to the fixed clamping plate 5, and a drive mechanism for driving the movable clamping plate 8 to move toward or away from the fixed clamping plate 5.

[0024] The fixed clamping plate 5 is securely mounted to the rear side of the base 1 by screws, serving as a fixed reference surface for clamping. The movable clamping plate 8 is arranged opposite to the fixed clamping plate 5.

[0025] The drive mechanism is used to drive the movable clamping plate 8 to move. It includes a screw 10 rotatably connected to the movable clamping plate 8, a mounting plate 4 threadedly engaged with the screw 10, and a handwheel 11 fixed to the end of the screw 10. The mounting plate 4 is fixed to the base 1.

[0026] Mounting plate 4 is fixed to the front side of base 1. One end of screw 10 is rotatably connected to moving plate 7 through bearing, and the other end passes through threaded hole on mounting plate 4, with handwheel 11 fixed at the end.

[0027] With this configuration, rotating the handwheel 11 causes the screw 10 to move axially due to the threaded side effect of the mounting plate 4, thereby pushing or pulling the movable clamping plate 8. This spiral clamping mechanism has the advantages of good self-locking and a large force amplification ratio, and can generate huge clamping force without loosening due to processing vibration, ensuring absolute reliability of clamping.

[0028] The base 1 has a vertical hole 3, and an optical axis 6 is installed inside the vertical hole 3. A movable plate 7 is slidably connected to the optical axis 6. A movable clamping plate 8 and a screw 10 are respectively installed on both sides of the movable plate 7.

[0029] By setting the movable plate 7, the movable clamping plate 8 can move along the optical axis 6 on the vertical hole 3, and the movable plate 7 cooperates with the vertical hole 3 to limit the direction of movement. In this configuration, the optical axis 6 provides precise guidance for the movement of the movable plate 7 and the movable clamping plate 8, effectively eliminating the radial backlash and wobble that may exist in the screw drive, ensuring that the movable clamping plate 8 is strictly parallel to the fixed clamping plate 5, so that the clamping force is evenly distributed and the workpiece is prevented from tilting.

[0030] The movable clamping plate 8 is equipped with an adaptive clamp, which includes two V-shaped clamping plates 21 and a connecting shaft 22 for connecting the V-shaped clamping plates 21 and the movable clamping plate 8. Both the upper and lower ends of the connecting shaft 22 are equipped with V-shaped clamping plates 21.

[0031] The V-shaped clamp 21 can rotate along the connecting shaft 22, which makes it easy for the two corners on the V-shaped clamp 21 to cooperate with the movable clamp 8 to clamp irregular parts.

[0032] The positioning support assembly is used to position and support right-angle irregular workpieces. The positioning support assembly includes a support plate 13 and an adjustable positioning mechanism 14. The support plate 13 is set on the upper surface of the base 1 to directly support the workpiece, increase the contact area, reduce workpiece deformation, and prevent damage to the base 1 during processing.

[0033] The base 1 is provided with a horizontal hole 2, and an adjustable positioning mechanism 14 is slidably connected in the horizontal hole 2.

[0034] Adjustable positioning mechanism 14: slidably connected within the transverse hole 2 and connected to the support plate 13 via the connecting plate 15. This mechanism includes:

[0035] Sleeve 17: It is horizontally slidably set in the transverse hole 2.

[0036] Sliding plate 18: It is horizontally slidably disposed within the sleeve 17.

[0037] Positioning plate 16: Fixed to the top of sliding plate 18, serving as the final positioning part.

[0038] Slot 19 and bolt 20: A horizontal slot 19 is provided on the sliding plate 18, and a corresponding bolt 20 is provided on the sleeve plate 17.

[0039] This configuration allows for adjustment of the distance between the positioning plate 16 and the fixed clamping plate 5 by horizontally sliding the entire adjustable positioning mechanism 14, accommodating workpieces of different lengths. Loosening the bolts 20 allows for individual adjustment of the extension lengths of the sliding plate 18 and the positioning plate 16, accommodating workpieces of different widths. After adjustment, tightening the bolts 20 locks the sliding plate 18 within the sleeve 17 through friction. Ultimately, the inner surface of the positioning plate 16 and the inner surface of the fixed clamping plate 5 together form a precise "right-angle positioning space." When a workpiece is placed inside, its two adjacent right-angled sides align with this space, achieving precise positioning instantly.

[0040] In use: First, adjust the adjustable positioning mechanism 14 according to the workpiece size to match the right-angle positioning space with the workpiece. Place the workpiece on the support plate 13, ensuring its two right-angled edges are tightly against the fixed clamping plate 5 and the positioning plate 16. Then, turn the handwheel 11 to drive the movable clamping plate 8 forward, where the V-shaped clamping plate 21 engages with the movable clamping plate 8 to stably clamp the workpiece. Deep hole EDM machining can then begin. After machining is complete, reverse the handwheel 11 to release the workpiece and remove it.

[0041] Although embodiments of this application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A deep hole EDM fixture for parts, characterized in that: Includes a base (1), on which a clamping assembly for clamping a workpiece is provided, and a positioning support assembly for positioning and supporting a right-angled irregular workpiece; The clamping assembly includes a fixed clamping plate (5) fixed on the base (1), a movable clamping plate (8) disposed opposite to the fixed clamping plate (5), and a driving mechanism for driving the movable clamping plate (8) to move toward or away from the fixed clamping plate (5). The movable clamping plate (8) is provided with an adaptive clamp. The positioning support assembly includes a support plate (13) and an adjustable positioning mechanism (14). A horizontal hole (2) is provided on the base (1). The adjustable positioning mechanism (14) is slidably connected in the horizontal hole (2). The adjustable positioning mechanism (14) can be adjusted and locked in the horizontal direction relative to the base (1), so that the positioning part on it can form a right angle positioning space with the inner side of the fixed clamp (5) for accommodating and positioning the two adjacent right angle sides of the right angle irregular workpiece.

2. The deep hole EDM fixture for parts according to claim 1, characterized in that: The drive mechanism includes a screw (10) rotatably connected to a movable clamping plate (8), a mounting plate (4) threadedly engaged with the screw (10), and a handwheel (11) fixed to the end of the screw (10). The mounting plate (4) is fixed to the base (1).

3. A deep hole EDM fixture for parts according to claim 2, characterized in that: The base (1) is provided with a vertical hole (3), and an optical axis (6) is provided in the vertical hole (3). A movable plate (7) is slidably connected on the optical axis (6). The movable clamp (8) and the screw (10) are respectively provided on both sides of the movable plate (7).

4. The deep hole EDM fixture for parts according to claim 1, characterized in that: The adaptive clamp includes two V-shaped clamps (21) and a connecting shaft (22) for connecting the V-shaped clamps (21) and the movable clamp (8). Both ends of the connecting shaft (22) are provided with V-shaped clamps (21).

5. A deep hole EDM fixture for parts according to claim 1, characterized in that: The adjustable positioning mechanism (14) is connected to the support plate (13) through the connecting plate (15) and is slidably connected in the horizontal hole (2) and vertical hole (3) opened in the base (1).

6. A deep hole EDM fixture for parts according to claim 5, characterized in that: The adjustable positioning mechanism (14) includes a sleeve (17) that is horizontally slidably disposed in the transverse hole (2), a sliding plate (18) that is vertically slidably disposed in the sleeve (17), and a positioning plate (16) fixed to the top of the sliding plate (18) as the positioning part.

7. A deep hole EDM fixture for parts according to claim 6, characterized in that: The sliding plate (18) has a strip groove (19), and the sleeve plate (17) is provided with a corresponding bolt (20). By tightening the bolt (20), the sleeve plate (17) can be locked in the horizontal direction and the sliding plate (18) can be locked in the vertical direction at the same time.

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