A hydraulic positioning jig for drilling angled holes

Abstract

The utility model discloses a kind of oblique hole drilling hydraulic positioning clamps, it includes: base;Four-axis rotary table;Clamping mechanism, it is set on four-axis rotary table and is used to clamp product;Axial locating block, it is set on four-axis rotary table and is used to limit the axial of product to clamp product for clamping mechanism;When clamping mechanism clamps product, four-axis rotary table drives clamping mechanism and product to rotate to preset angle and carries out milling groove processing.In the utility model, on the basis that clamping mechanism clamps product, also limit axial by axial locating block, can more quickly chuck product, reduce installation time, effectively improve production efficiency.In addition, the utility model is by clamping mechanism and axial locating block setting on four-axis rotary table, and by four-axis rotary table drive clamping mechanism with product is clamped to rotate and adjust angle, can effectively carry out oblique hole drilling processing to product, substantially improve adaptability.

Description

Technical fields:

[0001] This utility model relates to the field of shaft part processing fixtures, and specifically to a hydraulic positioning fixture for drilling inclined holes. Background technology:

[0002] Milling keyways is a process of machining keys and grooves on mechanical parts using a milling machine. It is mainly used to achieve connection between parts, power transmission, and positioning guidance.

[0003] When milling grooves on a workpiece, a milling fixture is typically used to clamp and position the workpiece to ensure its precise position in the fixture and eliminate workpiece uncertainty, thus guiding the tool movement. A milling fixture is a specialized device mounted on a milling machine to hold the workpiece in place; its main function is to machine planes, keyways, and notches on parts.

[0004] Currently available milling fixtures use a nut to drive a clamping screw to clamp the product. For example, Chinese utility model patent application CN105196085A discloses a fixture for milling keyways on gear shafts, which includes: a V-shaped positioning block, a pressure plate, a left pad, a right pad, a limiting block, a limiting plate, an internal hexagon screw, a countersunk screw, a nut, and a clamping screw; the V-shaped positioning block has a V-groove in the middle of its top surface, and a threaded hole is provided on the top surface of the V-shaped positioning block near the left and right sides. The pad and the right pad are fixedly installed in the V-groove of the V-shaped positioning block. The gear shaft is installed in the V-groove of the V-shaped positioning block. The clamping screw is installed in the threaded hole of the V-shaped positioning block. The lower nut is installed on the clamping screw. The pressure plate is installed on the clamping screw and its bottom surface abuts against the outer cylindrical surface of the gear shaft. The upper nut is installed on the clamping screw and its bottom surface abuts against the top surface of the pressure plate. The limiting plate is fixedly installed on the right side of the limiting block. The limiting block is installed on the right side of the V-shaped positioning block by an internal hexagon screw and its left side abuts against the gear shaft.

[0005] Existing fixtures for milling keyways on gear shafts use a nut to drive a clamping screw, which moves up and down to clamp the gear shaft. A limiting block then restricts the gear shaft's movement. However, this method only uses a lateral limiting block for lateral gear shaft control. Because this is a one-way limitation, the tool is prone to vibration during machining, causing unexpected displacement of the gear shaft and affecting machining quality. Furthermore, the V-shaped locating block does not support rotational angle adjustment. For products requiring angled holes, the overall angle of the fixture must be adjusted, which is inconvenient and detrimental to production management.

[0006] In view of the above, the inventors propose the following technical solution. Utility Model Content:

[0007] The purpose of this utility model is to overcome the shortcomings of the existing technology and provide a hydraulic positioning fixture for drilling inclined holes.

[0008] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: a hydraulic positioning fixture for drilling inclined holes, comprising: a base, and further comprising: a four-axis rotary table, which is disposed on the base; a clamping mechanism, which is disposed on the four-axis rotary table and used to clamp the product; an axial positioning block, which is disposed on the four-axis rotary table and used to axially limit the product so that the clamping mechanism can clamp the product; when the clamping mechanism clamps the product, the four-axis rotary table drives the clamping mechanism and the product to rotate to a preset angle for milling groove processing.

[0009] Furthermore, in the above technical solution, the four-axis turntable includes a four-axis turntable drive cylinder mounted on one side of the base, a first turntable disposed at the output end of the four-axis turntable drive cylinder, a rotating bracket disposed at the opposite end of the four-axis turntable drive cylinder, a second turntable disposed on the rotating bracket, and a rotating plate rotatably disposed between the first turntable and the second turntable.

[0010] Furthermore, in the above technical solution, both the clamping mechanism and the axial positioning block are mounted on the rotating plate and can rotate accordingly.

[0011] Furthermore, in the above technical solution, the clamping mechanism includes a drive cylinder disposed on a four-axis turntable, a first piston disposed on the output end of the drive cylinder, a piston support block disposed on the four-axis turntable and used to support the first piston, a first V-shaped positioning block disposed on the end of the first piston and moved by the first piston, and a second V-shaped positioning block disposed on the four-axis turntable and used to correspond with the first V-shaped positioning block to achieve product clamping.

[0012] Furthermore, in the above technical solution, the four-axis turntable is provided with a product support block for supporting the product. The product support block is located between the first V-shaped positioning block and the second V-shaped positioning block, and the product support block is provided with a limiting protrusion for blocking the first V-shaped positioning block and the second V-shaped positioning block to prevent the product from being pinched.

[0013] Furthermore, in the above technical solution, the first V-shaped positioning block is provided with a first friction surface, and the second V-shaped positioning block is provided with a second friction surface. The first friction surface and the second friction surface respectively abut against the two sides of the product to increase the axial friction force with the product.

[0014] Furthermore, in the above technical solution, the axial positioning block includes a positioning mounting base mounted on a four-axis rotary table, a first positioning block disposed on the upper end of the positioning mounting base and used to abut against the product, and a second positioning block disposed on the upper end of the positioning mounting base and used to abut against the product.

[0015] Furthermore, in the above technical solution, both the first positioning block and the second positioning block are made of soft materials to avoid hard contact with the product.

[0016] Furthermore, the above technical solution also includes a cutting tool for milling grooves on the product. The cutting tool includes a connecting section for connecting to external equipment, a main body section disposed at the lower end of the connecting section, and a milling section disposed at the lower end of the main body section for milling grooves on the product.

[0017] By adopting the above technical solution, this utility model has the following beneficial effects compared with the prior art:

[0018] This invention changes the traditional method of using an adjusting nut to drive a clamping screw to clamp the product. In addition to the clamping mechanism, an axial positioning block provides axial positioning, enabling faster product clamping, reducing installation time, and effectively improving production efficiency. It is suitable for application in various milling fixture structures. Furthermore, compared to existing structures, this invention, by mounting the clamping mechanism and axial positioning block on a four-axis rotary table, and having the rotary table drive the product-holding clamping mechanism to rotate and adjust its angle, effectively enables the drilling of angled holes in the product, significantly improving adaptability and offering convenient operation for production management. Attached image description:

[0019] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0020] Figure 2 This is a schematic diagram of the structure of the four-axis turntable after rotation in this utility model;

[0021] Figure 3 This is a schematic diagram of the structure of this utility model after the product is removed;

[0022] Figure 4 This is an exploded structural diagram of the present invention. Detailed implementation method:

[0023] The present invention will be further described below with reference to specific embodiments and accompanying drawings.

[0024] See Figures 1 to 4 As shown, a hydraulic positioning fixture for drilling inclined holes includes: a base 1, and a four-axis rotary table 2, which is mounted on the base 1; a clamping mechanism 3, which is mounted on the four-axis rotary table 2 and used to clamp a product 10; and an axial positioning block 4, which is mounted on the four-axis rotary table 2 and used to axially limit the product 10 so that the clamping mechanism 3 can clamp the product 10. When the clamping mechanism 3 clamps the product 10, the four-axis rotary table 2 drives the clamping mechanism 3 and the product 10 to rotate to a preset angle for milling.

[0025] This invention changes the traditional method of using an adjusting nut to drive a clamping screw to clamp the product. In addition to the clamping mechanism 3 clamping the product 10, an axial positioning block 4 provides axial positioning, enabling faster clamping of the product 10, reducing installation time, and effectively improving production efficiency. It is suitable for application in various milling fixture structures. Furthermore, compared to existing structures, this invention, by mounting the clamping mechanism 3 and the axial positioning block 4 on a four-axis rotary table 2, and having the four-axis rotary table 2 drive the clamping mechanism 3 holding the product 10 to rotate and adjust its angle, can effectively perform angled hole drilling on the product, significantly improving adaptability and offering convenient operation for production management.

[0026] The four-axis rotary table 2 includes a four-axis rotary table drive cylinder 21 mounted on one side of the base 1, a first turntable 22 disposed at the output end of the four-axis rotary table drive cylinder 21, a rotating bracket 23 disposed at the opposite end of the four-axis rotary table drive cylinder 21, a second turntable 24 disposed on the rotating bracket 23, and a rotating plate 25 rotatably disposed between the first turntable 22 and the second turntable 24. The clamping mechanism 3 and the axial positioning block 4 are both disposed on the rotating plate 25 and can rotate accordingly. Preferably, the two ends of the rotating plate 25 are rotatably connected to the first turntable 22 and the second turntable 24, respectively. When the four-axis rotary table drive cylinder 21 drives the first turntable 22 to rotate, the rotating plate 25 will synchronously drive the clamping mechanism 3 and the axial positioning block 4 to rotate, thereby driving the clamping mechanism 3 holding the product 10 to rotate and adjust the angle, thus effectively drilling inclined holes in the product 10 and greatly improving adaptability.

[0027] The clamping mechanism 3 includes a drive cylinder 31 mounted on a four-axis rotary table 2, a first piston 32 mounted at the output end of the drive cylinder 31, a piston support block 33 mounted on the four-axis rotary table 2 to support the first piston 32, a first V-shaped positioning block 34 mounted at the end of the first piston 32 and moved by the first piston 32, and a second V-shaped positioning block 35 mounted on the four-axis rotary table 2 to correspond with the first V-shaped positioning block 34 to clamp the product 10. Here, the drive cylinder 31 in the clamping mechanism 3 drives the first piston 32 to move, thereby moving the first V-shaped positioning block 34 and clamping the product 10 with the second V-shaped positioning block 35. The piston support block 33 is also mounted on the four-axis rotary table 2 to support and guide the first piston 32, ensuring sufficient clamping force.

[0028] The four-axis rotary table 2 is provided with a product support block 26 for supporting the product 10. This product support block 26 is located between the first V-shaped positioning block 34 and the second V-shaped positioning block 35, and the product support block 26 is provided with a limiting protrusion 261 to block the first V-shaped positioning block 34 and the second V-shaped positioning block 35 to prevent damage to the product 10. Here, by extending and forming a limiting protrusion 261 on the product support block 26, it is possible to effectively prevent the clamping mechanism 3 from damaging the product 10 during clamping.

[0029] The first V-shaped positioning block 34 is provided with a first friction surface 341, and the second V-shaped positioning block 35 is provided with a second friction surface 351. The first friction surface 341 and the second friction surface 351 respectively abut against the two sides of the product 10 to increase the axial friction force with the product 10. Here, the first friction surface 341 and the second friction surface 351 act on the product 10 to cooperate with the axial limiting block 4 to jointly prevent the product 10 from accidentally sliding in the axial direction during processing.

[0030] The axial positioning block 4 includes a positioning mounting base 41 mounted on the four-axis rotary table 2, a first positioning block 42 disposed on the upper end of the positioning mounting base 41 for contacting the product 10, and a second positioning block 43 disposed on the upper end of the positioning mounting base 41 for contacting the product 10. Here, the first positioning block 42 and the second positioning block 43 can block and limit the product 10, preventing the product 10 from accidentally sliding in the axial direction during processing.

[0031] The first positioning block 42 and the second positioning block 43 are both made of soft materials to avoid hard contact with the product 10.

[0032] It also includes a cutting tool 5 for milling grooves on the product. The cutting tool 5 includes a connecting section 51 for connecting to external equipment, a main body section 52 disposed at the lower end of the connecting section 51, and a milling section 53 disposed at the lower end of the main body section 52 for milling grooves on the product 10.

[0033] In summary, this invention changes the traditional method of using an adjusting nut to drive a clamping screw to clamp the product. Based on the clamping mechanism 3 clamping the product 10, it also uses an axial positioning block 4 for axial limiting, enabling faster clamping of the product 10, reducing installation time, and effectively improving production efficiency. It is suitable for widespread application in various milling fixture structures. Furthermore, compared to existing structures, this invention, by mounting the clamping mechanism 3 and the axial positioning block 4 on a four-axis rotary table 2, and having the four-axis rotary table 2 drive the clamping mechanism 3 holding the product 10 to rotate and adjust its angle, can effectively perform angled hole drilling on the product, significantly improving adaptability and offering convenient operation for production management.

[0034] Of course, the above description is only a specific embodiment of the present utility model and is not intended to limit the scope of the present utility model. All equivalent changes or modifications made to the structure, features and principles described in the claims of the present utility model should be included in the scope of the claims of the present utility model.

Claims

1. A hydraulic positioning fixture for drilling inclined holes, comprising a base (1), characterized in that, Also includes: A four-axis rotary table (2) is mounted on a base (1); A clamping mechanism (3) is mounted on a four-axis rotary table (2) and is used to clamp the product (10); Axial positioning block (4) is set on the four-axis turntable (2) and is used to axially limit the product (10) so that the clamping mechanism (3) can clamp the product (10); When the clamping mechanism (3) clamps the product (10), the four-axis rotary table (2) drives the clamping mechanism (3) and the product (10) to rotate to a preset angle for milling.

2. The hydraulic positioning fixture for drilling inclined holes according to claim 1, characterized in that: The four-axis turntable (2) includes a four-axis turntable drive cylinder (21) mounted on one side of the base (1), a first turntable (22) disposed at the output end of the four-axis turntable drive cylinder (21), a rotating bracket (23) disposed at the opposite end of the four-axis turntable drive cylinder (21), a second turntable (24) disposed on the rotating bracket (23), and a rotating plate (25) rotatably disposed between the first turntable (22) and the second turntable (24).

3. The hydraulic positioning fixture for drilling inclined holes according to claim 2, characterized in that: The clamping mechanism (3) and the axial positioning block (4) are both mounted on the rotating plate (25) and can rotate accordingly.

4. The hydraulic positioning fixture for drilling inclined holes according to claim 1, characterized in that: The clamping mechanism (3) includes a drive cylinder (31) mounted on a four-axis turntable (2), a first piston (32) mounted on the output end of the drive cylinder (31), a piston support block (33) mounted on the four-axis turntable (2) and used to support the first piston (32), a first V-shaped positioning block (34) mounted on the end of the first piston (32) and moved by the first piston (32), and a second V-shaped positioning block (35) mounted on the four-axis turntable (2) and used to correspond with the first V-shaped positioning block (34) to clamp the product (10).

5. A hydraulic positioning fixture for drilling inclined holes according to claim 4, characterized in that: The four-axis turntable (2) is provided with a product support block (26) for supporting the product (10). The product support block (26) is located between the first V-shaped positioning block (34) and the second V-shaped positioning block (35). The product support block (26) is provided with a limiting protrusion (261) for blocking the first V-shaped positioning block (34) and the second V-shaped positioning block (35) to prevent the product (10) from being pinched.

6. The hydraulic positioning fixture for drilling inclined holes according to claim 4, characterized in that: The first V-shaped positioning block (34) is provided with a first friction surface (341), and the second V-shaped positioning block (35) is provided with a second friction surface (351). The first friction surface (341) and the second friction surface (351) respectively abut against the two sides of the product (10) to increase the axial friction force with the product (10).

7. A hydraulic positioning fixture for drilling inclined holes according to any one of claims 1-6, characterized in that: The axial positioning block (4) includes a positioning mounting base (41) mounted on a four-axis turntable (2), a first positioning block (42) disposed on the upper end of the positioning mounting base (41) and used to abut against the product (10), and a second positioning block (43) disposed on the upper end of the positioning mounting base (41) and used to abut against the product (10).

8. A hydraulic positioning fixture for drilling inclined holes according to claim 7, characterized in that: The first positioning block (42) and the second positioning block (43) are both made of soft material to avoid hard contact with the product (10).

9. A hydraulic positioning fixture for drilling inclined holes according to any one of claims 1-6, characterized in that: It also includes a cutting tool (5) for milling grooves on the product. The cutting tool (5) includes a connecting section (51) for connecting to external equipment, a main body section (52) located at the lower end of the connecting section (51), and a milling section (53) located at the lower end of the main body section (52) for milling grooves on the product (10).

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