Side face jacking clamp of machining center

Abstract

The utility model relates to a machining center side face jacking clamp, which belongs to the technical field of tools and comprises a base, two fastening bolts are mounted on the base, T-shaped nuts are mounted at the lower ends of the fastening bolts, two supporting rods are vertically and fixedly arranged on the base, a plurality of pin holes are formed in the supporting rods, and a sliding block is sleeved between the two supporting rods. Two through holes with the same specification as pin holes in the supporting rod are transversely formed in the sliding block, the sliding block and the supporting rod are connected through a stabilizing pin, an inclined threaded hole is further formed in the sliding block, a puller bolt is installed in the threaded hole, a ball head is fixedly arranged at the end of the puller bolt, and a pressing plate is installed on the ball head. When the clamp is used for clamping the large-size plate-shaped part, the machining efficiency and the machining quality of the large-size plate-shaped part are greatly improved, and meanwhile the labor intensity of operators is reduced.

Description

Technical Field

[0001] This utility model relates to a side clamping fixture for a machining center, belonging to the field of tooling technology. Background Technology

[0002] When machining flat plate parts, especially those with large length and width dimensions, it's impossible to use one or more vises for clamping and machining. These flat plate parts require high parallelism and flatness of two large planes, and are not simply flat surfaces; they also incorporate structures such as holes, threads, and grooves. These large plate parts primarily function as partitions between two large-cavity parts containing high-pressure hydraulic fluid. Therefore, only high parallelism and flatness can prevent hydraulic oil leakage during use. Thus, all machining operations on the entire flat surface must be completed in a single clamping operation. If the entire surface is not machined in one go, and the flat parts are machined using a stop-and-go tool, the finished surface may have flatness or parallelism deviations that do not meet usage requirements. This could lead to oil or pressure leaks during use, affecting the normal operation of the equipment and impacting the overall product quality.

[0003] The current processing of flat plates has the following disadvantages:

[0004] 1. Due to the large length and width dimensions of the flat plate, exceeding the effective travel of the bench vise, it is impossible to use one or more bench vises for clamping and machining. The traditional method of clamping with upper-plane pressure plates and bolts is used. This requires placing several pressure plate bolts evenly around the flat plate, using the downward force of the pressure plates to fix it in place. Because the pressure plate's working surface is on a large flat surface, the flat plate cannot be machined in one go. During machining, the pressure plates need to be loosened and their clamping position adjusted, resulting in the flat surface not being machined in one operation. Consequently, the parallelism and flatness of the surface may exceed the tolerances specified in the drawing.

[0005] 2. To avoid the clamping plate vertically pressing against the large workpiece, several clamping lugs are welded around the perimeter of the large workpiece. During clamping, the clamping plate directly presses against these welded lugs. This way, the clamping plate will not interfere with the movement of the cutting tool during machining, allowing the entire planar structure to be machined in one clamping operation. However, this clamping method requires welding the clamping lugs before machining and then cutting them off with an oxy-acetylene torch after machining. This oxy-acetylene torch cutting can cause deformation of the machined surface, affecting the required dimensional accuracy and causing flatness or parallelism deviations. Surface correction is also required after oxy-acetylene torch cutting, impacting machining efficiency and quality.

[0006] 3. Using a permanent magnet chuck for clamping: The large flat part is placed on the working surface of the permanent magnet chuck, and the magnetic force of the chuck firmly clamps the large flat part, which can effectively solve the defects of the two clamping methods mentioned above. However, this clamping method also has certain drawbacks in the machining process. Because there are some pin holes and threaded holes on the flat surface of the large plate part, these holes are all through holes. When using a permanent magnet chuck for clamping, these holes cannot be machined in one go, requiring secondary clamping and machining of the holes, which affects the machining quality of the holes. If you want to complete the machining of the holes in one go, the large plate part needs to be raised to a certain height, but in this case, the permanent magnet chuck cannot make contact with the large plate part, and the magnetic attraction cannot meet the machining requirements.

[0007] In conclusion, regardless of the clamping method used in the machining of large sheet metal parts, the machining quality will be affected to some extent. It also significantly reduces machining efficiency, increases operating costs for enterprises, and intensifies the workload of operators. Utility Model Content

[0008] The purpose of this invention is to solve the technical problems of difficulty in ensuring the processing quality and low processing efficiency of large-size plate-shaped parts in the prior art, and to provide a side clamping fixture for machining centers.

[0009] This utility model is achieved through the following technical solution:

[0010] A side clamping fixture for a machining center includes a base with two fastening bolts mounted on the base and T-nuts mounted on the lower ends of the fastening bolts.

[0011] Two support rods are vertically fixed on the base. Multiple pin holes are opened on the support rods. A slider is fitted between the two support rods. Two through holes of the same size as the pin holes on the support rods are opened horizontally on the slider. The slider and the support rods are connected by a stabilizing pin. A slanted threaded hole is also opened on the slider. A tightening bolt is installed in the threaded hole. A ball head is fixed at the end of the tightening bolt. A pressure plate is installed on the ball head.

[0012] When machining large-sized plate-shaped parts, the use of this utility model fixture effectively ensures the parallelism and flatness of the large-sized plate-shaped parts. The through holes and through-hole threads on the surface of the parts can be machined on a single clamping plane, eliminating the need for multiple adjustments of the shims and pressure plates when machining large-sized plate-shaped parts. This greatly improves the machining efficiency and quality of large-sized plate-shaped parts, while also reducing the labor intensity of the operators.

[0013] Further optimization involves inserting stabilizing pins into the through holes on the slider and the pin holes on the support rod. Using stabilizing pins to install and fix the slider, with adjustable height, facilitates easy assembly and disassembly, and improves processing efficiency.

[0014] Further optimized, the side of the clamping plate is provided with a groove, and two ball-head pressure plates are installed on the side of the clamping plate. The ball head is located in the groove, and the two ball-head pressure plates clamp the ball head.

[0015] Further optimization involves ensuring that the diameter of the supporting circular notch between the two ball-head pressure plates is smaller than the diameter of the circular groove. Using two ball-head pressure plates to clamp the ball head provides good stability.

[0016] Further optimized, the two ball-head pressure plates are detachably mounted on the clamping plate by bolts.

[0017] Further optimization involves positioning the T-nut within the T-groove of the machine tool's worktable.

[0018] Compared with the prior art, the beneficial effects of this utility model are:

[0019] When machining large-sized plate-shaped parts, the use of this utility model fixture effectively ensures the parallelism and flatness of the large-sized plate-shaped parts. The through holes and through-hole threads on the surface of the parts can be machined on a single clamping plane, eliminating the need for multiple adjustments of the shims and pressure plates when machining large-sized plate-shaped parts. This greatly improves the machining efficiency and quality of large-sized plate-shaped parts, while also reducing the labor intensity of the operators. Attached Figure Description

[0020] In order to more clearly illustrate the technical solution of the present invention, the following is a brief introduction to the drawings required for the description. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0021] Figure 1 This is a front view structural diagram of a specific embodiment of the present utility model.

[0022] Figure 2 This is a side view of a specific embodiment of the present invention.

[0023] Figure 3 This is a top view of a specific embodiment of the present invention.

[0024] Figure 4 This is a side view of the clamping plate in a specific embodiment of the present invention.

[0025] Figure 5 This is a schematic diagram of the usage state structure of a specific embodiment of this utility model.

[0026] In the diagram: 1. Pressure plate; 2. Slider; 3. Support rod; 4. Pin hole; 5. Tightening bolt; 6. Stabilizing pin; 7. Base; 8. Fastening bolt; 9. T-nut; 10. Ball head pressure plate; 11. Ball head; 12. Groove; 13. Machine tool worktable; 14. Large plate-shaped part. Detailed Implementation

[0027] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings.

[0028] like Figures 1 to 5 The side clamping fixture of the machining center shown includes a base 7, on which two fastening bolts 8 are installed. T-nuts 9 are installed at the lower end of the fastening bolts 8 and are located in the T-shaped groove of the machine tool worktable 13.

[0029] Two support rods 3 are vertically fixed on the base 7. Multiple pin holes 4 are opened on the support rods 3. A slider 2 is sleeved between the two support rods 3. Two through holes of the same specifications as the pin holes 4 on the support rods 3 are opened horizontally on the slider 2. The slider 2 and the support rods 3 are connected by a stabilizing pin 6. A slanted threaded hole is also opened on the slider 2. A tightening bolt 5 is installed in the threaded hole. A ball head 11 is fixed at the end of the tightening bolt 5. A pressure plate 1 is installed on the ball head 11.

[0030] When machining large-sized plate-shaped parts 14, the use of this utility model fixture effectively ensures the parallelism and flatness of the large-sized plate-shaped parts 14. The through holes and through hole threads on the surface of the parts can be machined on one clamping plane, eliminating the need to adjust the position of the shims and pressure plates multiple times when machining large-sized plate-shaped parts 14. This greatly improves the machining efficiency and quality of large-sized plate-shaped parts 14, while also reducing the labor intensity of the operators.

[0031] The stabilizing pin 6 passes through the through hole on the slider 2 and the pin hole 4 on the support rod 3. The stabilizing pin 6 is used to install and fix the slider 2, and its height is adjustable. It is easy to assemble and disassemble, convenient to use, and helps improve processing efficiency.

[0032] The clamping plate 1 has a groove 12 on its side, and two ball-head clamping plates 10 are installed on the side of the clamping plate 1. The two ball-head clamping plates 10 are detachably installed on the clamping plate 1 by bolts. The ball head 11 is located in the groove 12, and the two ball-head clamping plates 10 clamp the ball head 11. The diameter of the supporting circular notch between the two ball-head clamping plates 10 is smaller than the diameter of the circular groove 12. Using two ball-head clamping plates 10 to clamp the ball head 11 provides good stability.

[0033] Working principle:

[0034] Four leveling blocks are placed on the machine tool worktable at the four corners of the large plate-shaped part 14 to be machined. A positioning block is clamped at a certain point on the short side of the large plate-shaped part 14. This provides an accurate positioning reference in the X-axis direction when loading and unloading the large plate-shaped part 14 multiple times. On one side of the long side, near the inside of the machine tool, one or more positioning blocks are also placed and fixed as a positioning reference in the Y-axis direction. A side clamping fixture is placed on the other side of the long side. A T-nut 9 is placed in the T-slot of the machine tool, and the present invention is fixed to the machine tool worktable with fastening bolts 8. The side clamping fixture clamping plate 1 is close to the side of the large plate-shaped part 14, and the side clamping fixture clamping plate 1 is below the clamping bolt 5. The distance between the Y-axis positioning block and the side clamping fixture is determined according to the length of the short side of the large plate-shaped part 14, and a certain gap is left to ensure sufficient space for loading and unloading workpieces.

[0035] 2. Lifting the large plate-shaped part 14: Lift the large plate-shaped part 14 above the four pads on the machine tool worktable, with the short and long sides of the large plate-shaped part 14 pressed against the positioning blocks in the X and Y directions, respectively. Adjust the height of the slider 2 of the side clamping device according to the thickness of the large plate-shaped part 14. After finding a suitable position, insert the stabilizing pin 6 to securely fix the slider 2.

[0036] 3. Clamping: Rotate the clamping bolt 5 of the side clamping fixture clockwise. Because the bolt hole in the slider 2 is inclined, the movement of the clamping bolt 5 is fixed in two directions: downward and towards the large plate-shaped part 14. The clamping plate 1 and the clamping bolt 5 are assembled in a spherical shape, which ensures that although the clamping bolt 5 is inclined, the clamping surface of the clamping plate 1 is always in close contact with the contour surface of the large plate-shaped part 14. This ensures that the large plate-shaped part 14 will not be suspended from the shim surface during the clamping process.

[0037] The various embodiments in this specification are described in a progressive manner. Each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0038] The terms "upper," "lower," "outer," "inner," etc., used in the specification, claims, and accompanying drawings of this utility model, are used to distinguish relative positional relationships and are not necessarily qualitative. It should be understood that such data can be interchanged where appropriate so that embodiments of the utility model described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion.

[0039] 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 side clamping fixture for a machining center, characterized in that, Includes a base (7), on which two fastening bolts (8) are installed, and a T-nut (9) is installed at the lower end of the fastening bolts (8); Two support rods (3) are vertically fixed on the base (7). Multiple pin holes (4) are opened on the support rods (3). A slider (2) is sleeved between the two support rods (3). Two through holes of the same specifications as the pin holes (4) on the support rods (3) are opened horizontally on the slider (2). The slider (2) is connected to the support rods (3) by a stabilizing pin (6). A slanted threaded hole is also opened on the slider (2). A tightening bolt (5) is installed in the threaded hole. A ball head (11) is fixed at the end of the tightening bolt (5). A pressure plate (1) is installed on the ball head (11).

2. The side clamping fixture for a machining center according to claim 1, characterized in that, The stabilizing pin (6) is inserted into the through hole on the slider (2) and the pin hole (4) on the support rod (3).

3. The side clamping fixture for a machining center according to claim 1, characterized in that, The side of the clamping plate (1) is provided with a groove (12), and two ball head clamping plates (10) are installed on the side of the clamping plate (1). The ball head (11) is located in the groove (12), and the two ball head clamping plates (10) clamp the ball head (11).

4. A side clamping fixture for a machining center according to claim 3, characterized in that, The diameter of the circular notch between the two ball-head pressure plates (10) is smaller than the diameter of the circular groove (12).

5. A side clamping fixture for a machining center according to claim 3, characterized in that, Two ball-head pressure plates (10) are detachably mounted on the pressure plate (1) by bolts.

6. A side clamping fixture for a machining center according to claim 1, characterized in that, The T-nut (9) is located in the T-groove of the machine tool worktable (13).

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