Hydraulic quick positioning tool clamp

Abstract

The utility model discloses a hydraulic type quick positioning frock clamp relates to hydraulic positioning frock technical field, including clamping base, the upper end both sides of clamping base are provided with side edge stand, and the upper end mirror image symmetry fixed mounting of side edge stand has hydraulic telescopic cylinder, the inner rod of two sides hydraulic telescopic cylinder is inwards opposite and is provided, and the inner rod outer end fixed connection of hydraulic telescopic cylinder has drive seat, and start synchronous drive mechanism, and synchronous drive mechanism drives each expansion support rod to turn out from the storage recess outward, forms the conical surface structure, then through hydraulic telescopic cylinder drive after the conical surface mechanism of expansion is inserted to workpiece axle hole, further clamps and positions workpiece, ensures the stability of workpiece in the machining process. This hydraulic type quick positioning frock clamp reasonable in design, simple structure can position workpiece fast and stably, adapts the positioning clamping demand of a variety of different specifications axle hole, has improved processing efficiency and processing accuracy.

Description

Technical Field

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

[0002] In the precision machining of mechanical parts with shaft holes, the rough blank, which has not undergone fine processing, is first placed on a machine tool and further precision-machined through processes such as cutting and grinding. Before these machining operations, to ensure the accuracy and stability of the machining, a specialized fixture must be used to reliably clamp and accurately position the rough blank. Under current technological conditions, a hydraulic cylinder is usually used as the power source, which pushes a positioning device with a tapered head to be inserted from both sides of the shaft hole to achieve the centering and positioning function of the shaft hole. However, due to the differences in shaft hole dimensions among different mechanical parts, the design and application range of this positioning fixture are limited, making it difficult to adapt to the positioning requirements of various shaft hole specifications. This leads to frequent changes or adjustments to the positioning fixture in actual production, affecting machining efficiency and flexibility. Therefore, we propose a hydraulic rapid positioning fixture. Utility Model Content

[0003] The purpose of this utility model is to solve the problem that, due to the differences in shaft hole sizes of different mechanical parts, a fixed-size tapered head is difficult to adapt to the positioning requirements of various shaft holes of different specifications, resulting in the need for frequent replacement or adjustment of positioning fixtures in actual production, which affects processing efficiency and flexibility. This utility model provides a hydraulic quick positioning fixture.

[0004] To achieve the above objectives, this utility model specifically adopts the following technical solution:

[0005] A hydraulic rapid positioning fixture includes a clamping base. Side columns are provided on both sides of the upper end of the clamping base, and hydraulic telescopic cylinders are fixedly mounted mirror-symmetrically on the upper ends of the side columns. The inner rods of the two hydraulic telescopic cylinders are arranged inwards and opposite to each other, and a drive seat is fixedly connected to the outer end of the inner rod of each hydraulic telescopic cylinder. An expansion positioning seat is fixedly connected to the outer end of the drive seat, and multiple storage grooves are evenly spaced on the side walls of the expansion positioning seat. Expansion struts are rotatably mounted on the front ends of the two side walls of the storage grooves via pins. A synchronous drive mechanism is provided at the center of the expansion positioning seat, and the expansion struts are connected to the synchronous drive mechanism for transmission.

[0006] Furthermore, the synchronous drive mechanism includes a toothed ring center rod, which is movably inserted into the center of the expansion positioning seat. The outer wall of the toothed ring center rod has multiple rings of protruding ridges evenly distributed at one end away from the drive seat. The outer wall of the expansion support rod corresponding to the pin shaft is provided with a semi-key wheel, which meshes with the toothed ring center rod.

[0007] Furthermore, the synchronous drive mechanism also includes a drive motor, which is embedded in the center of the drive seat, and the output shaft of the drive seat passes through the drive seat and is fixedly connected to a drive screw. The center of the toothed ring central rod has a threaded hole, and the outer end of the drive screw is threadedly connected to the central threaded hole of the toothed ring central rod.

[0008] Furthermore, a supporting hydraulic cylinder is fixedly connected to the upper front side of the clamping base, and a supporting pad is threadedly connected to the inner rod of the supporting hydraulic cylinder facing upward.

[0009] Furthermore, a rear support rod insertion hole is provided at the center of the upper rear side of the clamping base.

[0010] Furthermore, a central sleeve is fixedly connected to the side columns on both sides of the upper end of the clamping base, and the side columns are sleeved and fixed on the central sleeve. An electric telescopic rod is fixedly installed in the center of the inner cavity of the central sleeve, and the two ends of the electric telescopic rod are fixedly connected to the bottom of the central sleeve and the top wall of the side column insertion hole, respectively.

[0011] The beneficial effects of this utility model are as follows:

[0012] 1. This utility model places the workpiece to be processed on the clamping base, and then activates the hydraulic telescopic cylinders on both sides. The inner rods of the hydraulic telescopic cylinders push the drive seat inward, and the drive seat drives the expansion positioning seat to move closer to the workpiece. When the expansion positioning seat contacts the workpiece surface, the hydraulic telescopic cylinder continues to push, so that the expansion positioning seat is initially positioned with respect to the workpiece's shaft hole. At this time, the synchronous drive mechanism is activated, which drives each expansion support rod to rotate outward from the receiving groove to form a conical structure. Then, the hydraulic telescopic cylinder drives the expanded conical structure to insert into the workpiece's shaft hole, further clamping and positioning the workpiece to ensure its stability during processing. This hydraulic quick-positioning fixture has a reasonable design and simple structure, and can quickly and stably position the workpiece, adapting to the positioning and clamping needs of various shaft holes of different specifications, thus improving processing efficiency and accuracy.

[0013] 2. This utility model, through the meshing transmission of the toothed ring center rod and the semi-key wheel, enables the synchronous drive mechanism to drive each expansion strut to rotate outward synchronously and smoothly, ensuring the stability and accuracy of the conical structure. Simultaneously, the multi-ring convex ridge design increases the meshing points between the toothed ring center rod and the semi-key wheel, further improving the stability and reliability of the transmission. The ends of the toothed ring center rod near the drive seat are cut into flat shafts on both sides, and the inner end of the expansion positioning seat has a flat hole at the point where it movably engages with the toothed ring center rod. This effectively restricts the rotation of the toothed ring center rod during rotation, further improving the stability and accuracy of the transmission.

[0014] 3. This utility model, through its designed drive motor, provides a stable and powerful power source for the synchronous drive mechanism. After the drive motor starts, the drive screw connects to the threaded hole in the center of the toothed ring center rod, converting the rotational power of the drive motor into the linear motion of the toothed ring center rod, thereby driving each expansion strut to rotate outward synchronously and smoothly. This design not only simplifies the transmission structure and reduces the failure rate but also improves transmission efficiency, enabling the tooling fixture to quickly and accurately position the workpiece, meeting the requirements of high-efficiency and high-precision machining. Attached Figure Description

[0015] Figure 1 This is a perspective view of the present invention;

[0016] Figure 2 This is a utility model Figure 1 Enlarged view of point A in the middle;

[0017] Figure 3 This is a front sectional view of the present invention;

[0018] Figure 4 This is a partial top sectional view of the location of the expansion positioning seat in this utility model.

[0019] Reference numerals: 1. Clamping base; 2. Side column; 3. Hydraulic telescopic cylinder; 4. Drive seat; 5. Expansion positioning seat; 6. Storage groove; 7. Expansion strut; 8. Center rod with toothed ring; 9. Half key wheel; 10. Drive motor; 11. Drive screw; 12. Support hydraulic cylinder; 13. Support pad; 14. Rear support rod insertion hole; 15. Center sleeve; 16. Electric telescopic rod. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings.

[0021] Please see Figure 1 - Figure 4 This utility model provides a hydraulic quick positioning tooling fixture, including a clamping base 1. Side columns 2 are provided on both sides of the upper end of the clamping base 1, and hydraulic telescopic cylinders 3 are fixedly installed on the upper end of the side columns 2 in a mirror-symmetrical manner. The inner rods of the hydraulic telescopic cylinders 3 on both sides are arranged inward and opposite to each other, and the outer ends of the inner rods of the hydraulic telescopic cylinders 3 are fixedly connected to a drive seat 4. The outer end of the drive seat 4 is fixedly connected to an expansion positioning seat 5, and multiple storage grooves 6 are equally spaced on the side wall of the expansion positioning seat 5. Expansion support rods 7 are rotatably installed on the front ends of the two side walls of the storage grooves 6. A synchronous drive mechanism is provided at the center of the expansion positioning seat 5, and the expansion support rods 7 are connected to the synchronous drive mechanism for transmission.

[0022] The working principle and usage process of this utility model are as follows: First, the workpiece to be processed is placed on the clamping base 1. Then, the hydraulic telescopic cylinders 3 on both sides are activated. The inner rods of the hydraulic telescopic cylinders 3 push the drive seat 4 inward, which in turn drives the expansion positioning seat 5 towards the workpiece. When the expansion positioning seat 5 contacts the workpiece surface, the hydraulic telescopic cylinders 3 continue to push, causing the expansion positioning seat 5 to be initially positioned aligned with the workpiece's shaft hole. At this time, the synchronous drive mechanism is activated. The synchronous drive mechanism drives each expansion support rod 7 to rotate outward from the receiving groove 6, forming a conical structure. Then, the hydraulic telescopic cylinders 3 drive the expanded conical structure to insert into the workpiece's shaft hole, further clamping and positioning the workpiece, ensuring its stability during processing. This hydraulic quick-positioning fixture has a reasonable design and simple structure, enabling rapid and stable workpiece positioning. It adapts to the positioning and clamping needs of various shaft holes of different specifications, improving processing efficiency and accuracy.

[0023] In this embodiment, preferably, the synchronous drive mechanism includes a toothed ring center rod 8, which is movably inserted into the center of the expansion positioning seat 5. Multiple rings of protruding ridges are evenly distributed on the outer wall of the toothed ring center rod 8 away from the drive seat 4. A semi-key wheel 9 is provided on the outer wall of the expansion support rod 7 corresponding to the pin shaft, and the semi-key wheel 9 meshes with the toothed ring center rod 8. Through the meshing transmission of the toothed ring center rod 8 and the semi-key wheel 9, the synchronous drive mechanism can drive each expansion support rod 7 to rotate outward synchronously and smoothly, ensuring the stability and accuracy of the conical structure. Simultaneously, the design of multiple rings of protruding ridges increases the meshing points between the toothed ring center rod 8 and the semi-key wheel 9, further improving the stability and reliability of the transmission. The two sides of the toothed ring center rod 8 near the drive seat 4 are cut into flat shafts, and the inner end of the expansion positioning seat 5 is fitted with a flat hole where it movably inserts into the toothed ring center rod 8. This effectively restricts the rotation of the toothed ring center rod 8 during rotation, further improving the stability and accuracy of the transmission.

[0024] In this embodiment, preferably, the synchronous drive mechanism further includes a drive motor 10. The drive motor 10 is embedded in the center of the drive base 4, and the output shaft of the drive base 4 passes through the drive base 4 and is fixedly connected to a drive screw 11. The center of the toothed ring central rod 8 has a threaded hole, and the outer end of the drive screw 11 is threadedly connected to the central threaded hole of the toothed ring central rod 8. The drive motor 10 provides a stable and powerful power source for the synchronous drive mechanism. After the drive motor 10 starts, the rotational power of the drive motor 10 is converted into the linear motion of the toothed ring central rod 8 through the threaded connection between the drive screw 11 and the central threaded hole of the toothed ring central rod 8, thereby driving each expansion support rod 7 to rotate outward synchronously and smoothly. This design not only simplifies the transmission structure and reduces the failure rate, but also improves the transmission efficiency, enabling the tooling fixture to quickly and accurately position the workpiece, meeting the requirements of high-efficiency and high-precision processing.

[0025] In this embodiment, preferably, a supporting hydraulic cylinder 12 is fixedly connected to the upper front side of the clamping base 1, and a supporting pad 13 is threadedly connected to the inner rod of the supporting hydraulic cylinder 12 facing upwards. By using the supporting hydraulic cylinder 12, the bottom support and limiting of workpieces of different thicknesses or heights can be achieved by replacing the supporting pads 13 with those of different heights. The supporting hydraulic cylinder 12, through its powerful thrust, ensures that the supporting pad 13 fits tightly against the bottom surface of the workpiece, effectively preventing the workpiece from shaking or shifting during processing. Simultaneously, the threaded connection design between the supporting pad 13 and the inner rod of the supporting hydraulic cylinder 12 makes the adjustment process simpler and more precise, further improving the applicability and flexibility of the tooling fixture. This design not only enhances the clamping stability of the tooling fixture but also improves processing efficiency and accuracy, providing a strong guarantee for efficient and high-quality workpiece processing.

[0026] In this embodiment, preferably, a rear support rod insertion hole 14 is provided at the center of the upper rear side of the clamping base 1. The rear support rod insertion hole 14 allows for the use of rear support rods of different lengths to meet the processing requirements of workpieces of different sizes. The design of the rear support rod insertion hole 14 enables the tooling fixture to more stably support the rear of the workpiece when clamping it, effectively preventing deformation or displacement of the workpiece due to uneven force during processing. This design not only improves the applicability and flexibility of the tooling fixture but also further enhances the processing accuracy and stability of the workpiece, providing a more reliable guarantee for efficient and high-quality workpiece processing.

[0027] In this embodiment, preferably, a central sleeve 15 is fixedly connected to the side columns 2 on both sides of the upper end of the clamping base 1, and the side columns 2 are sleeved and fixed on the central sleeve 15. An electric telescopic rod 16 is fixedly installed in the center of the inner cavity of the central sleeve 15, and the two ends of the electric telescopic rod 16 are fixedly connected to the bottom of the central sleeve 15 and the top wall of the insertion hole of the side column 2, respectively. Through the electric telescopic rod 16, the side columns 2 can be driven to move telescopically within the central sleeve 15, thereby realizing the rapid adjustment of the workpiece clamping height. This design not only simplifies the adjustment process of the tooling fixture, but also improves the accuracy and convenience of the adjustment, enabling the tooling fixture to adapt to the processing needs of workpieces of different sizes. At the same time, the telescopic movement of the electric telescopic rod 16 is smooth and reliable, ensuring the stability and safety of the workpiece during the clamping process, and providing strong support for the efficient and high-quality processing of the workpiece.

[0028] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A hydraulic quick-positioning tooling fixture, characterized in that: The device includes a clamping base (1), on both sides of the upper end of the clamping base (1) are side columns (2), and the upper end of the side columns (2) is fixedly mounted with a hydraulic telescopic cylinder (3) in a mirror symmetrical manner. The inner rods of the hydraulic telescopic cylinders (3) on both sides are arranged inwards and opposite to each other. The outer end of the inner rod of the hydraulic telescopic cylinder (3) is fixedly connected to a drive seat (4). The outer end of the drive seat (4) is fixedly connected to an expansion positioning seat (5). The side wall of the expansion positioning seat (5) is provided with multiple storage grooves (6) at equal intervals. The front end of the two side walls of the storage grooves (6) is rotatably mounted with an expansion support rod (7). The center of the expansion positioning seat (5) is provided with a synchronous drive mechanism, and the expansion support rod (7) is connected to the synchronous drive mechanism for transmission.

2. The hydraulic rapid positioning tooling fixture according to claim 1, characterized in that: The synchronous drive mechanism includes a toothed ring center rod (8), which is movably inserted into the center of the expansion positioning seat (5). The outer wall of the toothed ring center rod (8) is distributed with multiple rings of protrusions at equal intervals at the end away from the drive seat (4). The outer wall of the expansion support rod (7) is provided with a semi-key wheel (9) at the end of the corresponding pin shaft, and the semi-key wheel (9) meshes with the toothed ring center rod (8).

3. The hydraulic rapid positioning tooling fixture according to claim 2, characterized in that: The synchronous drive mechanism also includes a drive motor (10), which is embedded in the center of the drive seat (4). The output shaft of the drive seat (4) passes through the drive seat (4) and is fixedly connected to a drive screw (11). The center of the toothed ring center rod (8) has a threaded hole, and the outer end of the drive screw (11) is threadedly connected to the center threaded hole of the toothed ring center rod (8).

4. The hydraulic rapid positioning tooling fixture according to claim 1, characterized in that: The upper front side of the clamping base (1) is fixedly connected to a support hydraulic cylinder (12), and the inner rod of the support hydraulic cylinder (12) is threadedly connected to a support pad (13) facing upward.

5. A hydraulic rapid positioning tooling fixture according to claim 1, characterized in that: The upper rear side center of the clamping base (1) is provided with a rear support rod insertion hole (14).

6. A hydraulic rapid positioning tooling fixture according to claim 1, characterized in that: The upper two sides of the clamping base (1) are fixedly connected to the side columns (2), and the side columns (2) are sleeved and fixed on the center sleeve (15). An electric telescopic rod (16) is fixedly installed in the center of the inner cavity of the center sleeve (15), and the two ends of the electric telescopic rod (16) are fixedly connected to the bottom of the center sleeve (15) and the top wall of the insertion hole of the side column (2) respectively.

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