A casting iron machining fixture with pressure detection function

Abstract

This utility model relates to a casting iron part machining fixture with pressure detection function, including a support platform, a fixed clamping part, and a movable clamping part. The fixed clamping part is fixedly installed at one end of the top of the support platform, and the movable clamping part is adjustablely installed on the top of the support platform. The movable clamping part and the fixed clamping part cooperate to clamp the workpiece. In this utility model, the movable clamping part can be initially adjusted in position and then finely adjusted. When the clamping part cooperates with the fixed clamping part to clamp the workpiece, a thin-film pressure sensor can be used to detect the clamping force. This allows the operator to quickly perform the workpiece clamping and fixing operation, and can accurately judge whether the clamping force is appropriate based on the pressure value, avoiding the problem of workpiece loosening or damage caused by improper clamping force, and effectively ensuring the quality of subsequent processing of casting iron parts.

Description

Technical Field

[0001] This utility model relates to the field of fixture technology, specifically to a cast iron part processing fixture with pressure detection function. Background Technology

[0002] In the field of cast iron machining, fixtures are key tools for ensuring that workpieces maintain a stable position during machining. Precise and stable clamping is essential for guaranteeing the machining accuracy and improving the quality of cast iron parts.

[0003] Currently, most common casting iron machining fixtures only have simple clamping functions. When clamping workpieces, operators usually rely on experience and manual feel to judge whether the workpiece is clamped, lacking an accurate and quantitative method to determine whether the clamping force is appropriate. On the one hand, if the clamping force is too small, the workpiece is prone to loosening or displacement during machining, leading to a decrease in machining accuracy and even potentially causing safety accidents. For example, changes in the relative position between the tool and the workpiece can cause dimensional deviations, affecting the quality of the finished casting iron parts. On the other hand, if the clamping force is too large, it may cause excessive compression of the casting iron parts, resulting in indentations, deformation, and other problems on the workpiece surface. This not only damages the workpiece but may also shorten the service life of the fixture and increase production costs. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] This invention provides a casting iron part processing fixture with pressure detection function, which solves the problems mentioned in the background art.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this utility model provides the following technical solution: a cast iron part processing fixture with pressure detection function, comprising a support platform, a fixed clamping part, and a movable clamping part. The fixed clamping part is fixedly installed at one end of the top of the support platform, and the movable clamping part is adjustablely installed on the top of the support platform. The movable clamping part and the fixed clamping part cooperate to clamp the workpiece. The movable clamping part includes a clamping seat, a deflection shaft, a connecting seat, a threaded rod, a threaded sleeve, and at least one set of positioning components. The clamping seat is disposed on the top of the support platform, and the connecting seat is disposed inside the clamping seat and is rotatably connected to the clamping seat through the deflection shaft. The end of the threaded rod near the connecting seat is inserted into the connecting seat and rotatably connected thereto. The threaded sleeve is sleeved on the outside of the threaded rod and threadedly connected thereto. At least one set of positioning components is installed on the outside of the threaded sleeve. The support platform has a plurality of preliminary positioning grooves spaced apart along its length direction. After the positioning components are inserted into the preliminary positioning grooves, they can restrict the position of the threaded sleeve, so that the rotation of the threaded rod can adjust the position of the clamping seat.

[0008] Preferably, the positioning component includes a positioning seat, a insert shaft, and a nut. The positioning seat is fixedly connected to the outer wall of the threaded sleeve. The upper end of the insert shaft is fixedly connected to the positioning seat. The lower end of the insert shaft is provided with an external thread. The nut is sleeved on the insert shaft and threadedly connected to it. The diameter of the initial positioning groove is larger than the diameter of the insert shaft and smaller than the width of the nut. The nut is movably positioned above the support platform.

[0009] In a further preferred embodiment, both the clamping seat and the fixed clamping part are configured as mutually symmetrical "L" shapes, and the inner sides of both the clamping seat and the fixed clamping part are welded and fixed with reinforcing ribs. A thin-film pressure sensor is also embedded and installed on the side of the fixed clamping part facing the clamping seat.

[0010] In a further preferred embodiment, the movable clamping part further includes a handle sleeve, which is fitted onto and fixedly connected to the end of the threaded rod away from the connecting seat.

[0011] (III) Beneficial Effects

[0012] Compared with the prior art, this utility model provides a casting iron part machining fixture with pressure detection function, which has the following beneficial effects:

[0013] In this invention, the movable clamping part can be initially adjusted in position and then the clamping seat can be finely adjusted. When the clamping seat cooperates with the fixed clamping part to clamp the workpiece, a thin-film pressure sensor can be used to detect the clamping force. This allows the operator to quickly perform the workpiece clamping and fixing operation, and can accurately judge whether the clamping force is appropriate based on the pressure value. This avoids the problem of workpiece loosening or damage caused by improper clamping force, and effectively ensures the quality of subsequent processing of cast iron parts. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of a cast iron machining fixture with pressure detection function according to the implementation plan;

[0015] Figure 2 for Figure 1 A schematic diagram of the movable clamping part in a cast iron machining fixture with pressure detection function during adjustment;

[0016] Figure 3 This is a structural diagram of the movable clamping part according to the implementation plan.

[0017] In the diagram: 10. Support platform; 11. Preliminary positioning groove; 20. Fixed clamping part; 21. Thin-film pressure sensor; 30. Movable clamping part; 31. Clamping seat; 32. Deflection shaft; 33. Connecting seat; 34. Threaded rod; 35. Handle sleeve; 36. Threaded sleeve; 37. Positioning seat; 38. Insert shaft; 39. Nut. Detailed Implementation

[0018] 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.

[0019] Please see Figure 1 A casting iron part machining fixture with pressure detection function includes a support platform 10, a fixed clamping part 20, and a movable clamping part 30. The fixed clamping part 20 is fixedly mounted on one end of the top of the support platform 10, and the movable clamping part 30 is adjustablely mounted on the top of the support platform 10. After the workpiece is placed between the two, the workpiece can be clamped by the cooperation between the movable clamping part 30 and the fixed clamping part 20.

[0020] See Figure 2 and Figure 3 The movable clamping part 30 may include a clamping seat 31, a deflection shaft 32, a connecting seat 33, a threaded rod 34, a handle 35, a threaded sleeve 36, and at least one set of positioning components. A plurality of preliminary positioning grooves 11 are formed on the support 10, spaced apart along its length. The clamping seat 31 is disposed on the top of the support 10, and the connecting seat 33 is disposed inside the clamping seat 31 and is rotatably connected to the clamping seat 31 via the deflection shaft 32, allowing the connecting seat 33 to deflect vertically. The end of the threaded rod 34 near the connecting seat 33 is inserted into and rotatably connected to the connecting seat 33. The handle 35 is sleeved on and fixedly connected to the end of the threaded rod 34 away from the connecting seat 33, allowing the user to hold the handle 35 and rotate or deflect the threaded rod 34 vertically. The threaded sleeve 36 is fitted onto the outside of the threaded rod 34 and threadedly connected thereto. At least one set of positioning components is installed on the outside of the threaded sleeve 36. After the positioning components are inserted into the initial positioning groove 11, they can restrict the position of the threaded sleeve 36. At this time, rotating the threaded rod 34 can make the threaded rod 34 move along its axial direction when it rotates by using the fixed position of the threaded sleeve 36. This will drive the clamping seat 31, the deflection shaft 32 and the connecting seat 33 to move in the same direction. This allows the rotation of the threaded rod 34 to adjust the position of the clamping seat 31 and the distance between it and the fixed clamping part 20.

[0021] In this embodiment, the positioning assembly includes a positioning seat 37, a insert shaft 38, and a nut 39. The positioning seat 37 is fixedly connected to the outer wall of the threaded sleeve 36, and the upper end of the insert shaft 38 is fixedly connected to the positioning seat 37. The diameter of the preliminary positioning groove 11 is larger than the diameter of the insert shaft 38, so that the threaded rod 34 can be inserted into the corresponding preliminary positioning groove 11 after being deflected downward by the connecting seat 33. The lower end of the insert shaft 38 is provided with an external thread, and the nut 39 is sleeved on the insert shaft 38 and threadedly connected to it. The diameter of the preliminary positioning groove 11 is smaller than the width of the nut 39. The nut 39 is movably disposed above the support platform 10, and after the nut 39 rotates to contact the support platform 10, it can restrict the up-and-down deflection of the positioning assembly and the threaded sleeve 36, thereby keeping the threaded sleeve 36 in its position. At this time, the position of the clamping seat can be finely adjusted. During the initial position adjustment, the nut 39 can be screwed upward along the axis of the insert shaft 38 to a certain height, and then the threaded rod 34 can be deflected upward to move the insert shaft 38 out of the corresponding initial positioning groove 11. At this time, the movable clamping part 30 can be pushed to move along the length of the support 10, and the position of the clamping seat 31 can be initially adjusted.

[0022] In this embodiment, both the clamping base 31 and the fixed clamping part 20 are configured as mutually symmetrical "L" shapes, and reinforcing ribs are welded and fixed to the inner sides of both the clamping base 31 and the fixed clamping part 20. The reinforcing ribs are used to reduce the stress deformation of the clamping base 31 and the fixed clamping part 20 during clamping. In addition, a thin-film pressure sensor 21 is also embedded and installed on the side of the fixed clamping part 20 facing the clamping base 31. The thin-film pressure sensor is a prior art technology, which is generally composed of a sensitive film, an electrode layer, a substrate, and a signal processing circuit. The sensitive film is the core component of the sensor, and it is generally made of materials with good elasticity and piezoelectric, piezoresistive, or capacitive effects, such as metal films (such as stainless steel, nickel-chromium alloys, etc.), semiconductor films (such as silicon, germanium, etc.), or polymer films (such as polyimide, polyester, etc.). When subjected to pressure, the sensitive film will deform, and this deformation will cause a change in its physical properties (such as resistance, capacitance, or charge), thereby converting the pressure signal into an electrical signal. Electrode layers are typically located on either side of the sensitive thin film or at specific positions. They are generally made of metal (such as gold, silver, or copper) and fabricated on the sensitive thin film using processes like deposition or sputtering. The electrode layers are used to extract the electrical signals generated by the sensitive thin film, transmitting these weak signals to subsequent signal processing circuits. The substrate provides support and protection for the sensor, acting as insulation and isolation to prevent interference from the external environment to the internal components. Signal processing circuits generally include amplification circuits, filtering circuits, and analog-to-digital conversion circuits. These circuits amplify, filter, and convert the weak electrical signals output from the sensitive thin film, converting analog signals into digital signals for subsequent data acquisition and analysis.

[0023] The system of the present invention may further include a control system and a display screen. The control system is used to receive feedback signals from the thin-film pressure sensor and output and display the pressure value during clamping and the preset pressure value through the display screen. The display screen can be installed on the side of the support for observation. It should be understood that there are no particular limitations on the control system and the display screen, and they can be implemented using existing control technologies, which will not be elaborated here.

[0024] Of all the solutions mentioned above, those involving the connection between two components can be selected according to the actual situation, such as welding, bolt and nut connection, bolt or screw connection, or other known connection methods, which will not be elaborated here. For all the fixed connections mentioned above, welding is preferred. Although embodiments of this utility model 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 utility model. The scope of this utility model is defined by the appended claims and their equivalents.

Claims

1. A casting iron part machining fixture with pressure detection function, comprising a support platform (10), characterized in that, It also includes a fixed clamping part (20) and a movable clamping part (30). The fixed clamping part (20) is fixedly mounted on one end of the top of the support (10), and the movable clamping part (30) is adjustablely mounted on the top of the support (10). The movable clamping part (30) and the fixed clamping part (20) cooperate to clamp the workpiece. The movable clamping part (30) includes a clamping seat (31), a deflection shaft (32), a connecting seat (33), a threaded rod (34), a threaded sleeve (36), and at least one set of positioning components. The clamping seat (31) is disposed on the top of the support platform (10). The connecting seat (33) is disposed inside the clamping seat (31) and is rotatably connected to the clamping seat (31) through the deflection shaft (32). One end of the threaded rod (34) near the connecting seat (33) is inserted into the connecting seat (33) and rotatably connected thereto. The threaded sleeve (36) is sleeved on the outside of the threaded rod (34) and threadedly connected thereto. At least one set of positioning components is installed on the outside of the threaded sleeve (36). The support (10) has a plurality of preliminary positioning grooves (11) spaced apart along its length. After the positioning component is inserted into the preliminary positioning groove (11), it can restrict the position of the threaded sleeve (36) so that the rotation of the threaded rod (34) can adjust the position of the clamping seat (31).

2. A casting iron workpiece machining fixture with pressure detection function according to claim 1, characterized in that: The positioning assembly includes a positioning seat (37), a insert shaft (38), and a nut (39). The positioning seat (37) is fixedly connected to the outer wall of the threaded sleeve (36). The upper end of the insert shaft (38) is fixedly connected to the positioning seat (37). The lower end of the insert shaft (38) is provided with an external thread, and the nut (39) is sleeved on the insert shaft (38) and threadedly connected to it.

3. A casting iron machining fixture with pressure detection function according to claim 2, characterized in that: The diameter of the initial positioning groove (11) is larger than the diameter of the insert shaft (38) and smaller than the width of the nut (39), which is movably positioned above the support (10).

4. A casting iron machining fixture with pressure detection function according to any one of claims 1-3, characterized in that: The clamping seat (31) and the fixed clamping part (20) are both set as mutually symmetrical "L" shapes, and the inner sides of the clamping seat (31) and the fixed clamping part (20) are welded and fixed with reinforcing ribs.

5. A casting iron machining fixture with pressure detection function according to claim 4, characterized in that: A thin-film pressure sensor (21) is also embedded on the side of the fixed clamping part (20) facing the clamping seat (31).

6. A casting iron machining fixture with pressure detection function according to claim 1, characterized in that: The movable clamping part (30) also includes a handle (35), which is fitted onto the end of the threaded rod (34) away from the connecting seat (33) and fixedly connected thereto.

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