A CNC drilling fixture

Abstract

This utility model discloses a CNC machining drilling fixture, comprising: a mounting base, characterized in that a motor is fixedly connected to the bottom of the mounting base, a connecting column is fixedly connected to the output end of the motor, a gear is fixedly connected to the lower end of the connecting column, a rack is meshed on the left side of the gear, a clamping plate is fixedly connected to the upper end of the rack, a rack is meshed on the right side of the gear, a clamping plate is fixedly connected to the upper surface of the rack, and rubber pads are fixedly connected to the clamping surfaces of both the clamping plate and the clamping plate. By setting a gear and rack structure at the bottom of the device, relative movement of the clamping plates is achieved, and rubber pads are provided on the clamping surfaces of the clamping plates. This allows for stable centering and clamping of the parts to be drilled, and minimizes wear on the parts during the drilling process.

Description

Technical Field

[0001] This utility model relates to the field of CNC machining tooling technology, and in particular to a CNC machining drilling tooling. Background Technology

[0002] CNC drilling machines are numerically controlled hole-making machine tools primarily used for drilling. Due to the development of machining centers, most CNC drilling machines have been replaced by machining centers. However, some parts with drilling as the main machining process still require CNC drilling machines for processing, such as printed circuit boards. Therefore, there is still a certain demand for CNC drilling machines. Most CNC drilling machines use point-to-point control and move along two or three axes simultaneously to reduce positioning time. In addition, a drilling machining center can be formed by adding a turret-type tool magazine and an automatic tool changer to a three-axis CNC vertical drilling machine. Drilling centers can not only perform hole-making processes such as drilling, reaming, boring, countersinking, and tapping, but also complete contour control milling with linear and circular interpolation. Drilling centers are mainly used for processing small and medium-sized parts in the electrical and mechanical industries. CNC drilling machines perform CNC machining by positioning and fixing the product to be processed and programming it.

[0003] When drilling parts on a CNC machine tool, a fixture is needed to center and clamp the parts to ensure their stability during the machining process. However, existing CNC drilling fixtures do not provide sufficient stability for clamping the parts, and excessive clamping can easily cause wear on the parts, affecting their accuracy. After searching, it was found that the technical solution provided by the utility model with application number "202323206705.2" also has the above-mentioned problems. Utility Model Content

[0004] The purpose of this utility model is to provide a CNC machining drilling fixture to solve the problems of insufficient stability in clamping parts and the tendency of excessive clamping to cause wear on parts, thus affecting the accuracy of parts.

[0005] To achieve the above objectives, a CNC drilling fixture is provided, comprising: a mounting base, a motor fixedly connected to the bottom of the mounting base, a connecting column fixedly connected to the output end of the motor, a gear fixedly connected to the lower end of the connecting column, a rack first meshing on the left side of the gear, a clamping plate first fixedly connected to the upper end of the rack first, a rack second meshing on the right side of the gear, a clamping plate second fixedly connected to the upper surface of the rack second, and rubber gaskets fixedly connected to the clamping surfaces of both the clamping plate first and the clamping plate second.

[0006] According to the CNC drilling fixture, a sliding groove is provided on the bottom left side of the mounting base.

[0007] According to the CNC machining drilling fixture, the first slide groove and the first rack are slidably connected.

[0008] According to the CNC machining drilling fixture, a second sliding groove is provided on the bottom right side of the mounting base.

[0009] According to the CNC machining drilling fixture, the second slide groove and the second rack are slidably connected.

[0010] According to the CNC machining drilling fixture, a first slide rod is provided on the upper surface of the mounting base, a second slide rod is provided on the upper surface of the mounting base, a first clamping plate is slidably connected to the first slide rod, and a second clamping plate is slidably connected to the second slide rod.

[0011] According to the CNC machining drilling fixture, a slide rod three is provided on the upper side of the mounting base, a slide rod four is provided on the lower side of the mounting base, a clamping plate one is slidably connected to the slide rod three, and a clamping plate two is slidably connected to the slide rod four.

[0012] According to the CNC drilling fixture, a support block is fixedly connected to the upper surface of the mounting base.

[0013] The above-mentioned solution has the following beneficial effects:

[0014] This patent achieves relative movement of the clamping plates by setting a gear and rack structure at the bottom of the device, and a rubber pad is set on the clamping surface of the clamping plate. This allows for stable centering and clamping of the parts to be drilled, and the parts are less likely to be worn during the drilling process.

[0015] This patent also effectively prevents damage to the device caused by excessive drilling depth due to operational errors of the CNC machine tool during the drilling process by setting a support block with a middle gap on the processing surface of the device.

[0016] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0018] Figure 1 This is a schematic diagram of the overall structure of a CNC machining drilling fixture according to this utility model;

[0019] Figure 2 This is a top view of a CNC drilling fixture according to the present invention;

[0020] Figure 3 This is a left view of a CNC machining drilling fixture according to the present invention;

[0021] Figure 4 This is a schematic diagram of the bottom structure of a CNC machining drilling fixture according to this utility model.

[0022] Legend:

[0023] 1. Mounting base; 2. Motor; 3. Connecting column; 4. Gear; 5. Slide groove one; 6. Slide groove two; 7. Rack one; 8. Rack two; 9. Clamping plate one; 10. Clamping plate two; 11. Slide rod one; 12. Slide rod two; 13. Slide rod three; 14. Slide rod four; 15. Rubber pad; 16. Support block. Detailed Implementation

[0024] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0025] Reference Figure 1-4 This utility model discloses a CNC drilling fixture, comprising: a mounting base 1, a motor 2 fixedly connected to the bottom of the mounting base 1, a connecting column 3 fixedly connected to the output end of the motor 2, a gear 4 fixedly connected to the lower end of the connecting column 3, a rack 7 meshing on the left side of the gear 4, a clamping plate 9 fixedly connected to the upper end of the rack 7, a rack 8 meshing on the right side of the gear 4, and a clamping plate 10 fixedly connected to the upper surface of the rack 8. The gear and rack clamping mechanism on the CNC drilling fixture offers the following significant advantages compared to traditional pneumatic, hydraulic, or manual clamping methods: the meshing transmission of the gear and rack allows for precise control of the clamping displacement (accuracy up to ±0.01mm), avoiding over-clamping or loosening, making it particularly suitable for workpieces with strict hole position requirements (such as high-precision flanges); the rack stroke is fixed, ensuring consistent clamping position during batch processing. This design reduces hole spacing deviations caused by clamping errors. Adjusting the rack and pinion limit block allows for adaptation to workpieces of different sizes, resulting in short changeover times. The rack and pinion mechanism locks naturally after the drive stops, eliminating the need for continuous power supply (unlike pneumatic / hydraulic systems which require constant pressure). It will not loosen even during power outages. The rigidity of the metal meshing transmission is higher than that of pneumatic soft clamps, which can suppress axial vibration during drilling and improve hole wall quality (especially suitable for deep hole drilling). The rack and pinion can be arranged laterally or longitudinally to adapt to narrow spaces (such as dense clamping points in multi-station fixtures), eliminating the need for pneumatic or hydraulic lines, reducing clutter around the fixture, and facilitating chip removal. In short, the rack and pinion clamping mechanism is particularly suitable for drilling scenarios requiring high precision, high rigidity, and medium batch processing, achieving a balance between efficiency, cost, and reliability. Combined with automated control (such as servo drives), it can be further upgraded into an intelligent fixture system.

[0026] Both clamping plates 9 and 10 have rubber pads 15 fixedly connected to their clamping surfaces. A sliding groove 5 is provided on the bottom left side of the mounting base 1, which is slidably connected to a rack 7. A sliding groove 6 is provided on the bottom right side of the mounting base 1, which is slidably connected to a rack 8. A sliding rod 11 and a sliding rod 12 are provided on the upper surface of the mounting base 1. Clamping plates 9 and 11 are slidably connected, and clamping plates 10 and 12 are slidably connected. This connection is achieved through contact with the parts... The clamping surface is equipped with a rubber pad 15, which can protect the workpiece surface and prevent scratches. The elasticity of the rubber can disperse the clamping force and avoid indentations or scratches caused by direct contact between the metal clamp and the workpiece (such as polished metal, plastic, and coated surfaces). It is suitable for clamping precision parts and fragile materials (such as aluminum alloys, glass, and composite materials). It can also reduce vibration and noise. In drilling, milling and other processing, the rubber pad can effectively attenuate the high-frequency vibration transmitted by the machine tool, improve processing quality (reduce burrs or hole position deviations), reduce collision noise between metals, and improve the working environment.

[0027] A slide bar 3 13 is provided on the upper side of the mounting base 1, and a slide bar 4 14 is provided on the lower side of the mounting base 1. The clamping plate 1 9 is slidably connected to the slide bar 3 13, and the clamping plate 2 10 is slidably connected to the slide bar 4 14. A support block 16 is fixedly connected to the upper surface of the mounting base 1. By providing a support block 16 with a middle gap on the machining surface of the device, the device can be effectively prevented from being damaged due to excessive drilling depth caused by operational errors of the CNC machine tool during the drilling process.

[0028] Working principle: The fixture is installed on the CNC machine tool. When drilling is required, the part to be processed is first placed on the support block 16, and then the motor 2 is started to make the gear 4 start to rotate. This causes the racks on both sides of the gear 4 to move together. The clamping plate fixed on the upper end of the rack will move stably relative to the part with the help of the slide rod. The part placed on the support block 16 is centered and clamped. After the part is positioned and clamped, the CNC machine tool can be started to drill the part.

[0029] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A numerically controlled machining drill jig comprising: Mounting base (1), characterized in that a motor (2) is fixedly connected to the bottom of the mounting base (1), a connecting column (3) is fixedly connected to the output end of the motor (2), a gear (4) is fixedly connected to the lower end of the connecting column (3), a rack (7) meshes with the left side of the gear (4), a clamping plate (9) is fixedly connected to the upper end of the rack (7), a rack (8) meshes with the right side of the gear (4), a clamping plate (10) is fixedly connected to the upper surface of the rack (8), and rubber pads (15) are fixedly connected to the clamping surfaces of the clamping plate (9) and the clamping plate (10).

2. The numerical control machining drilling tooling apparatus according to claim 1, wherein, The mounting base (1) has a sliding groove (5) on the bottom left side.

3. The numerical control machining drilling tooling apparatus according to claim 2, wherein, The slide groove (5) and the rack (7) are slidably connected.

4. The numerical control machining drilling tooling apparatus according to claim 1, wherein, The mounting base (1) has a sliding groove (6) on the bottom right side.

5. The numerical control machining drilling tooling apparatus according to claim 4, wherein, The second slide groove (6) and the second rack (8) are slidably connected.

6. The CNC drilling fixture according to claim 1, characterized in that, The upper surface of the mounting base (1) is provided with a slide rod one (11) and a slide rod two (12). The clamping plate one (9) is slidably connected to the slide rod one (11), and the clamping plate two (10) is slidably connected to the slide rod two (12).

7. A CNC drilling fixture according to claim 1, characterized in that, The upper side of the mounting base (1) is provided with a slide rod three (13), and the lower side of the mounting base (1) is provided with a slide rod four (14). The clamping plate one (9) is slidably connected to the slide rod three (13), and the clamping plate two (10) is slidably connected to the slide rod four (14).

8. A CNC drilling fixture according to claim 1, characterized in that, A support block (16) is fixedly connected to the upper surface of the mounting base (1).

Images