Supporting frame structure of numerical control deep hole drilling and milling machine

Abstract

The utility model relates to the technical field of deep hole drilling and milling machine supporting frames, and discloses a numerical control deep hole drilling and milling machine supporting frame structure which comprises a drilling and milling workbench and a gun drill assembly, a stable supporting device is arranged on the rear side of the surface of the drilling and milling workbench and comprises a gray cast iron supporting frame and a rubber shock pad, and a starting rotating motor is arranged on the rear side of the surface of the drilling and milling workbench. The driving gear and the driven gear are driven to rotate, the threaded sliding block is promoted to drive the stabilizing plate and the gun drill assembly to move downwards, the limiting block stably slides in the limiting groove, the sliding block moves in the sliding groove, the threaded rod rotates at the uniform angular speed, and the threaded sliding block conducts linear motion, so that working parts connected with the threaded rod can stably move; when drilling operation is carried out, the two spring columns at the top of the stabilizing plate can effectively absorb part of high-frequency vibration generated in the operation and cutting process of the drilling machine, and therefore the problem that due to shaking of the supporting frame in the drilling process or vibration generated by the drilling machine, the position precision is insufficient is solved.

Description

Technical Field

[0001] This utility model relates to the technical field of support frame for deep hole drilling and milling machines, and in particular to a support frame structure for a CNC deep hole drilling and milling machine. Background Technology

[0002] A CNC deep hole drilling and milling machine is a machine tool used for machining deep holes. It combines CNC technology with deep hole machining technology. Deep holes generally refer to holes with a relatively large depth. For example, in many industrial fields such as mold manufacturing, aerospace parts, and petroleum machinery, parts that require machining deep holes are very common. CNC deep hole drilling and milling machines are specially designed for this kind of high-precision deep hole machining. For deep hole drilling and milling machines, the drill bit needs to be precisely positioned and stably supported during the drilling process. The support frame structure can bear the weight of drilling components such as the spindle box.

[0003] The applicant discovered through a search that a Chinese patent discloses "A Rotary Support Frame Structure for a CNC Deep Hole Drilling and Milling Machine," with publication (announcement) number "CN 210359424 U." This patent mainly includes a base, with a connector bolted to the upper surface of the base. A hydraulic cylinder is connected to the base via the connector. This invention uses a hydraulic motor to drive the guide sleeve cantilever support seat to rotate. A TC skeleton oil seal seals the bearing to prevent oil leakage. The hydraulic cylinder pushes the entire base up and down for adjustment. The entire device has a simple structure and is firmly fixed. However, in the above-mentioned prior art, the base and fixing plate are installed on the drill frame of the deep hole drilling and milling machine. Due to the high precision requirements of deep hole machining, even slight shaking of the worktable may cause deviations in the deep holes machined on the workpiece. Vibration will occur during drilling, making it difficult for the base to maintain good stability, thus affecting the positional accuracy during machining. Therefore, we propose a support frame structure for a CNC deep hole drilling and milling machine. Utility Model Content

[0004] The purpose of this utility model is to provide a support frame structure for a CNC deep hole drilling and milling machine, in order to solve the problem mentioned in the background art that the existing technology is mounted on the drill frame of the deep hole drilling and milling machine by a base and a fixing plate. Due to the high precision requirements of deep hole machining, even slight shaking of the worktable may cause deviations in the deep holes machined on the workpiece. Vibration will occur during the drilling process, and the base is difficult to maintain good stability, which in turn affects the positional accuracy during the machining process.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a support frame structure for a CNC deep hole drilling and milling machine, including a drilling and milling worktable and a gun drill assembly. A stabilizing support device is provided on the rear side of the surface of the drilling and milling worktable. The stabilizing support device includes a gray cast iron support frame and a rubber shock-absorbing pad. The front side of the gray cast iron support frame has a straight groove and two sets of sliding grooves. Limiting grooves are formed on the inner walls of the left and right sides of the straight groove. The straight groove is connected to a driven gear and a threaded slider through a threaded rod. The threaded slider is connected to a sliding block through a stabilizing plate. A rotating motor is fixedly installed on the rear surface of the gray cast iron support frame. The rotating motor is connected to a driving gear through a rotating shaft. Two sets of spring columns are fixedly installed between the surface of the stabilizing plate and the top of the gray cast iron support frame. Limiting blocks are fixedly installed on the left and right sides of the threaded slider. Fixing ears are fixedly installed on the bottom of the left and right sides of the gray cast iron support frame.

[0006] As a preferred embodiment, the drilling and milling worktable is fixedly installed with a stable base at the four corners of its bottom, and a level is provided on the left and front sides of the drilling and milling worktable. The surface of the drilling and milling worktable is provided with a limiting and fixing device and a carrier plate.

[0007] As a preferred embodiment, the rubber damping pad is fixedly installed on the rear side of the drilling and milling table surface, the gray cast iron support frame is fixedly installed on the surface of the rubber damping pad, the threaded rod is rotatably connected to the inside of the straight groove, the threaded slider is threadedly connected to the circumferential surface of the threaded rod and located inside the straight groove, the driven gear is fixedly installed on the circumferential surface of the threaded rod and located above the threaded slider, and the stabilizing plate is fixedly installed on the front surface of the threaded slider.

[0008] As a preferred embodiment, the driven gear meshes with the driving gear, the limiting block is slidably connected inside the limiting groove, the sliding block is slidably connected inside the sliding groove, and the gun drill assembly is fixedly installed on the front bottom of the stabilizing plate.

[0009] As a preferred embodiment, the limiting and fixing device includes four sets of mounting blocks, with a fixing rod fixedly installed between each pair of mounting blocks. A movable block is slidably connected to the surface of the fixing rod, and a clamping plate is fixedly connected to the side of the movable block. A cavity is opened on the inner side of the clamping plate, and multiple elastic pads are provided in the cavity. Stable seats are fixedly installed on both sides of the surface of the drilling and milling worktable.

[0010] As a preferred embodiment, the internal thread of the stabilizing base is connected to a threaded tube, one end of which is rotatably connected to the clamping plate, while the other end is fixedly fitted with a knob.

[0011] The technical effects and advantages of this utility model are as follows:

[0012] 1. By setting up a stable support device, firstly, use bolts to pass through the fixing ears to firmly fix the gray cast iron support frame to the surface of the drilling and milling worktable. Then, start the rotating motor to drive the drive gear and driven gear to rotate, causing the threaded slider to move the stabilizing plate and the gun drill assembly downward along the threaded rod. During the movement, the limit block slides smoothly in the limit groove, and the sliding block moves synchronously in the sliding groove to ensure the accuracy and stability of the movement. When the threaded rod rotates at a uniform angular velocity, the threaded slider will move in a straight line at a relatively stable speed. This uniform speed movement enables the connected working parts to work smoothly. While drilling, the two spring columns at the top of the stabilizing plate can effectively absorb some of the high-frequency vibrations generated by the drilling machine's own operation and cutting process, thereby avoiding the problem of insufficient positional accuracy caused by the support frame shaking or the vibration generated by the drilling machine itself during the drilling process.

[0013] 2. By setting a limiting and fixing device, the parts to be processed are first placed on the carrier plate. Then, the knobs on both sides are turned, and the threaded tube moves in the stable seat, thereby driving the clamping plates on both sides to move towards each other. At the same time, the moving blocks on both sides move stably on the surface of the fixed rod until the elastic pads inside the clamping plates on both sides contact the parts and are completely locked. The threaded tube in the stable seat has a self-locking effect through the threaded connection, which prevents the clamping plates from springing back. This device prevents the parts from moving during the drilling process, which would cause the product to be unqualified. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0015] Figure 2 This is a three-dimensional structural diagram of the back of this utility model;

[0016] Figure 3 This is a schematic diagram of the right-side cross-sectional structure of this utility model;

[0017] Figure 4 This is a schematic diagram of the stable support device structure of this utility model;

[0018] Figure 5 This is a schematic diagram of the structural part of the stabilizing support device of this utility model;

[0019] Figure 6 This is a schematic diagram of the limiting and fixing device of this utility model.

[0020] In the diagram: 1. Drilling and milling table; 2. Gun drill assembly; 3. Carrier plate; 4. Stable support device; 5. Limiting and fixing device; 6. Level; 7. Stable base; 401. Gray cast iron support frame; 402. Straight groove; 403. Limiting groove; 404. Sliding groove; 405. Threaded rod; 406. Driven gear; 407. Rotating motor; 408. Driving gear; 409. Threaded slider; 410. Stable plate; 411. Sliding block; 412. Limiting block; 413. Rubber shock-absorbing pad; 414. Fixing ear; 415. Spring column; 501. Mounting block; 502. Fixing rod; 503. Moving block; 504. Clamping plate; 505. Elastic pad; 506. Stable base; 507. Threaded tube; 508. Knob. Detailed Implementation

[0021] 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.

[0022] Example 1:

[0023] Please see the appendix Figure 1 - Appendix Figure 5A support frame structure for a CNC deep hole drilling and milling machine includes a drilling and milling worktable 1 and a gun drill assembly 2. A stabilizing support device 4 is provided on the rear side of the surface of the drilling and milling worktable 1. The stabilizing support device 4 includes a gray cast iron support frame 401 and a rubber shock-absorbing pad 413. The front side of the gray cast iron support frame 401 has a straight groove 402 and two sets of sliding grooves 404. Limiting grooves 403 are formed on the inner walls of the left and right sides of the straight groove 402. The straight groove 402 is connected to a driven gear 406 and a threaded slider 405 via a threaded rod 405. 9. A threaded slider 409 is connected to a sliding block 411 via a stabilizing plate 410. A rotary motor 407 is fixedly installed on the rear surface of the gray cast iron support frame 401. The rotary motor 407 is connected to a drive gear 408 via a rotating shaft. Two sets of spring columns 415 are fixedly installed between the surface of the stabilizing plate 410 and the top of the gray cast iron support frame 401. Limit blocks 412 are fixedly installed on the left and right sides of the threaded slider 409. Fixed blocks 415 are fixedly installed at the bottom of the left and right sides of the gray cast iron support frame 401. The drilling and milling worktable 1 is fixedly mounted with a fixed lug 414 at the four corners of its bottom. A level 6 is provided on the left and front sides of the drilling and milling worktable 1. A limiting and fixing device 5 and a carrier plate 3 are provided on the surface of the drilling and milling worktable 1. A rubber shock-absorbing pad 413 is fixedly mounted on the rear side of the surface of the drilling and milling worktable 1. A gray cast iron support frame 401 is fixedly mounted on the surface of the rubber shock-absorbing pad 413. A threaded rod 405 is rotatably connected to the inside of a straight groove 402. A threaded slider 409 is threadedly connected to the circumferential surface of the threaded rod 405 and located inside the straight groove 402. A driven gear 406 is fixedly mounted on the circumferential surface of the threaded rod 405 and located above the threaded slider 409. A stabilizing plate 410 is fixedly mounted on the front surface of the threaded slider 409. The driven gear 406 is meshed with the driving gear 408. A limiting block 412 is slidably connected to the inside of a limiting groove 403. A sliding block 411 is slidably connected to the inside of a sliding groove 404. A gun drill assembly 2 is fixedly mounted on the bottom front side of the stabilizing plate 410.

[0024] The gray cast iron support frame 401 has good shock absorption and wear resistance. Its internal graphite structure can effectively absorb vibration energy. By using this material, the impact of drilling component vibration on machining accuracy can be reduced to a certain extent. The rubber in the rubber damping pad 413 has good elasticity and damping characteristics. When the drilling component vibrates, the rubber damping pad 413 can absorb some of the vibration energy. During the drilling process, the drilling machine in the gun drill assembly 2 will inevitably vibrate. The presence of the spring column 415 can absorb some of the high-frequency vibration generated by the drilling machine's own operation and cutting process. During the process of absorbing vibration, the spring column 415 will have a certain elastic deformation and rebound. If the rebound frequency is close to the working frequency of the drilling machine, it may cause resonance. Therefore, the elastic coefficient of the spring column 415 should not be too low.

[0025] Specifically, firstly, the gray cast iron support frame 401 is fixed to the surface of the drilling and milling table 1 by bolts passing through the fixing lug 414. The drive gear 408 and driven gear 406 are rotated by rotating the motor 407. Then, the threaded slider 409 drives the stabilizing plate 410 and the gun drill assembly 2 to move downward along the threaded rod 405. During the movement, the limiting block 412 moves in the limiting groove 403, and the sliding block 411 moves in the sliding groove 404. When the threaded rod 405 rotates at a uniform angular velocity, the threaded slider 409 will move in a straight line at a relatively stable speed. This uniform speed movement can make the connected working parts work smoothly. At the same time as drilling, the two spring columns 415 on the top of the stabilizing plate 410 can absorb some of the high-frequency vibrations generated by the operation of the drilling machine itself and the cutting process, avoiding the problem of insufficient positional accuracy caused by the shaking of the support frame or the vibration generated by the drilling machine itself during the drilling process.

[0026] Example 2:

[0027] Please see the appendix Figure 1 - Appendix Figure 3 and appendix Figure 6 Furthermore, based on Embodiment 1, the limiting and fixing device 5 includes four sets of mounting blocks 501. Fixing rods 502 are fixedly installed between each pair of mounting blocks 501. Moving blocks 503 are slidably connected to the surface of the fixing rods 502. Clamping plates 504 are fixedly connected to the side of the moving blocks 503. A cavity is opened on the inner side of the clamping plate 504, and multiple elastic pads 505 are provided in the cavity. Stable seats 506 are fixedly installed on both sides of the surface of the drilling and milling worktable 1. Threaded tubes 507 are threadedly connected to the inside of the stable seats 506. One end of the threaded tube 507 is rotatably connected to the clamping plate 504, and a knob 508 is fixedly installed on the other end.

[0028] The movement of the threaded tube 507 is controlled by manually turning the knob 508, which facilitates control and operation and prevents damage to the surface of the parts due to excessive clamping. The elastic pad 505 has strong friction and elasticity, which can stably clamp the parts while preventing movement.

[0029] Specifically, the parts to be processed are first placed on the carrier plate 3. Then, the knobs 508 on both sides are turned, and the threaded tube 507 moves within the stabilizing seat 506, thereby causing the clamping plates 504 on both sides to move towards each other. At the same time, the moving blocks 503 on both sides move stably on the surface of the fixed rod 502 until the elastic pads 505 inside the clamping plates 504 on both sides come into contact with the parts and are completely locked. The threaded tube 507 has a self-locking effect through the threaded connection within the stabilizing seat 506, which prevents the clamping plates 504 from springing back. This device prevents the parts from shifting during the drilling process, which could lead to product defects.

[0030] Working principle of this utility model: This utility model is a support frame structure for a CNC deep hole drilling and milling machine. First, by observing the levels on both sides 6, the drilling and milling worktable 1 is installed in a stable environment. The gray cast iron support frame 401 is fixed to the surface of the drilling and milling worktable 1 by bolts passing through the fixing ears 414. Then, the parts to be processed are placed on the carrier plate 3. Then, the knobs 508 on both sides are turned, and the threaded tube 507 moves within the stable seat 506, thereby driving the clamping plates 504 on both sides to move towards each other. At the same time, the moving blocks 503 on both sides move stably on the surface of the fixed rod 502 until the elastic pads 505 inside the clamping plates 504 on both sides contact the parts and are completely locked. The rotating motor 407 drives the driving gear 408 and driven gear 406 to rotate. Subsequently, the threaded slider 409 drives the stabilizing plate 410 and the gun drill assembly 2 to move downward along the threaded rod 405. During the movement, the limiting block 412 moves in the limiting groove 403, and the sliding block 411 moves in the sliding groove 404. When the threaded rod 405 rotates at a uniform angular velocity, the threaded slider 409 will move linearly at a relatively stable speed. The drilling machine in the gun drill assembly 2 drills holes in the parts. The two spring pillars 415 on the top of the stabilizing plate 410 can absorb some of the high-frequency vibrations generated by the operation of the drilling machine and the cutting process. At this point, the entire process is completed.

[0031] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A support frame structure for a CNC deep hole drilling and milling machine, comprising a drilling and milling worktable (1) and a gun drill assembly (2), characterized in that: The milling table (1) is provided with a stabilizing support device (4) on its rear side. The stabilizing support device (4) includes a gray cast iron support frame (401) and a rubber shock-absorbing pad (413). The front side of the gray cast iron support frame (401) has a straight groove (402) and two sets of sliding grooves (404). Limiting grooves (403) are opened on the inner walls of the left and right sides of the straight groove (402). The straight groove (402) is connected to a driven gear (406) and a threaded slider (409) through a threaded rod (405). The threaded slider (409) is supported by a stabilizing plate (406). 410) is connected to a sliding block (411). A rotating motor (407) is fixedly installed on the rear surface of the gray cast iron support frame (401). The rotating motor (407) is connected to a drive gear (408) through a rotating shaft. Two sets of spring columns (415) are fixedly installed between the surface of the stabilizing plate (410) and the top of the gray cast iron support frame (401). Limit blocks (412) are fixedly installed on the left and right sides of the threaded slider (409). Fixing ears (414) are fixedly installed on the bottom of the left and right sides of the gray cast iron support frame (401).

2. The support frame structure for a CNC deep hole drilling and milling machine according to claim 1, characterized in that: The bottom four corners of the drilling and milling worktable (1) are fixedly installed with stable bases (7). The left side and front side of the drilling and milling worktable (1) are equipped with level instruments (6). The surface of the drilling and milling worktable (1) is equipped with limiting and fixing devices (5) and carrier plates (3).

3. The support frame structure for a CNC deep hole drilling and milling machine according to claim 1, characterized in that: The rubber damping pad (413) is fixedly installed on the rear side of the surface of the drilling and milling table (1). The gray cast iron support frame (401) is fixedly installed on the surface of the rubber damping pad (413). The threaded rod (405) is rotatably connected to the inside of the straight groove (402). The threaded slider (409) is threadedly connected to the circumferential surface of the threaded rod (405) and located inside the straight groove (402). The driven gear (406) is fixedly installed on the circumferential surface of the threaded rod (405) and located above the threaded slider (409). The stabilizing plate (410) is fixedly installed on the front surface of the threaded slider (409).

4. The support frame structure for a CNC deep hole drilling and milling machine according to claim 1, characterized in that: The driven gear (406) is meshed with the driving gear (408), the limiting block (412) is slidably connected to the inside of the limiting groove (403), the sliding block (411) is slidably connected to the inside of the sliding groove (404), and the gun drill assembly (2) is fixedly installed on the front bottom of the stabilizing plate (410).

5. The support frame structure for a CNC deep hole drilling and milling machine according to claim 2, characterized in that: The limiting and fixing device (5) includes four sets of mounting blocks (501). A fixing rod (502) is fixedly installed between each pair of mounting blocks (501). A moving block (503) is slidably connected to the surface of the fixing rod (502). A clamping plate (504) is fixedly connected to the side of the moving block (503). A cavity is opened on the inner side of the clamping plate (504), and multiple elastic pads (505) are provided in the cavity. Stable seats (506) are fixedly installed on both sides of the surface of the drilling and milling table (1).

6. The support frame structure for a CNC deep hole drilling and milling machine according to claim 5, characterized in that: The internal threaded connection of the stabilizing base (506) is a threaded tube (507), one end of which is rotatably connected to the clamping plate (504), while the other end is fixedly mounted with a knob (508).

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