A double-spindle horizontal machining center with a ram

Abstract

The utility model provides a slide ram type double main shaft horizontal machining center, including machining center base, be provided with workstation feed mechanism and machine storehouse cover on the machining center base, the workstation feed mechanism is located machine storehouse cover inside, two corresponding slide ram mechanism and the sectional barrier are fixedly installed on the machine storehouse cover, and each slide ram mechanism is fixedly installed with main shaft box, and is provided with knife tower, tool mounting seat and tool changing arm on the main shaft box, the machine storehouse cover outside is provided with man -machine interaction page, the utility model discloses sectional barrier between two slide rams, to realize physical isolation with sectoral partition board, and the cross -region iron fillings pollution rate reduces 90% or above, can intercept tool fragment, and worm wheel and worm drive response is fast, and the partition board can be completely stored and does not disturb the operation, can also reduce the load of the scrap, and the shock column reduces the noise and protects the drive mechanism.

Description

Technical Field

[0001] This utility model belongs to the field of machining center technology, and in particular relates to a ram-type dual-spindle horizontal machining center. Background Technology

[0002] As a key piece of equipment in high-end mechanical manufacturing, the ram-type twin-spindle horizontal machining center significantly improves the machining efficiency and accuracy of complex parts due to its features of parallel machining with two spindles and multi-process integration. It is widely used in precision machining scenarios such as aerospace and automotive manufacturing. However, existing ram-type twin-spindle horizontal machining centers generally lack an effective physical isolation structure between the two machining areas (i.e., the tool cutting areas corresponding to the two spindles), resulting in significant technical defects during the machining process. First, the large amount of iron filings, coolant, and metal dust generated during high-speed machining will splash into another area, causing cross-contamination. The splashed iron filings easily adhere to the workpiece surface or the tool edge, causing scratches on the machined surface, dimensional inaccuracies, and other problems. This poses a serious threat, especially to the micron-level machining quality of precision parts such as aero-engine impellers. Simultaneously, the mixed accumulation of debris in both areas significantly increases the burden on the chip removal system, leading to increased cleaning difficulty and frequent downtime for cleaning, directly reducing equipment uptime.

[0003] Secondly, if abnormal situations such as tool breakage or chipping occur during processing, the high-speed flying tool fragments, lacking any protective barrier, may directly impact the workpiece, fixture, or spindle components on the other side of the processing area, causing secondary damage; if the fragments penetrate the machine compartment protection, they will pose a serious safety hazard to the operator.

[0004] Therefore, it is essential to invent a ram-type twin-spindle horizontal machining center. Utility Model Content

[0005] To address the aforementioned technical problems, this utility model provides a ram-type dual-spindle horizontal machining center, comprising a machining center base, a machine housing cover, a segmented isolator, a ram mechanism, a spindle box, a tool turret, a tool mount, a human-machine interface, and a table feed mechanism. The machining center base is equipped with the table feed mechanism and the machine housing cover, with the table feed mechanism located inside the machine housing cover. Two corresponding ram mechanisms and the segmented isolator are fixedly installed on the machine housing cover. Each ram mechanism is fixedly equipped with the spindle box, which is equipped with a tool turret, a tool mount, and a tool changer. A human-machine interface is installed outside the machine housing cover, near the machine housing door.

[0006] Preferably, the segmented barrier is installed between the two slide mechanisms, which separates the two slide mechanisms and thus isolates and protects the machining area near the spindle box, so that the two machining areas do not interfere with each other.

[0007] Preferably, the segmented barrier includes a storage cover, a bearing shaft, a mounting sleeve, a partition plate, a worm gear, a drive shaft, a worm, a drive motor, and a shock-absorbing limiting post. The storage cover is fixedly installed on the engine compartment cover and located between the two sliding ram mechanisms. The mounting sleeve is rotatably mounted on the bearing shaft fixedly installed inside the storage cover. The partition plate is fixedly installed on the mounting sleeve. The worm gears are arranged on both sides of the mounting sleeve. Two worm gears are symmetrically fixedly installed on the bearing shaft. Each worm gear meshes with a worm fixedly installed on the drive shaft rotatably installed at the bottom inside the storage cover. One end of the drive shaft is fixedly connected to the output end of the drive motor fixedly installed on the outside of the storage cover. A shock-absorbing limiting post is fixedly installed at the bottom inside the storage cover.

[0008] Preferably, the storage cover is a fan-shaped cover structure with its opening facing the engine compartment cover and communicating with its interior. The inner wall of the storage cover is engaged with the sliding groove of the arc-shaped surface of the partition plate through sliding protrusions. The partition plate is a fan-shaped structure that can be completely stored inside the storage cover.

[0009] Preferably, at least two shock-absorbing and limiting posts are provided on one side of the partition plate. The shock-absorbing and limiting posts can limit the range of motion of the partition plate when it is stored in the storage cover. The shock-absorbing and limiting posts are cylindrical in shape.

[0010] Preferably, the shock-absorbing limiting post is located between the two drive shafts, and the two do not interfere with each other. Each drive shaft can drive the corresponding worm wheel to rotate through its own worm gear. The two worm wheels rotate synchronously, and at the same time drive the bearing shaft to perform a single rotational movement of less than 360 degrees.

[0011] Compared with the prior art, the present invention has the following beneficial effects: This invention utilizes a segmented barrier between two sliding ram mechanisms, employing a fan-shaped partition plate to achieve physical isolation. This effectively prevents metal chips and coolant from splashing into another processing area, avoiding problems such as workpiece surface scratches and tool edge contamination, and significantly improving processing accuracy and stability. This structure can reduce cross-regional metal chip contamination by more than 90%, and is particularly suitable for processing materials such as titanium alloys and high-temperature alloys that are prone to producing adhered chips.

[0012] This utility model's partition plate is made of high-strength alloy material, and with the buffer design of shock-absorbing and limiting posts, it can effectively intercept flying fragments generated by broken or chipped tools, preventing injury to the processing parts on the other side and the operators. The synchronous rotation structure driven by a worm gear ensures that the partition plate responds quickly, solving the problem of sluggish response in traditional protective devices.

[0013] This utility model's sector-shaped partition plate can be completely housed within a sector-shaped cover, without interfering with the movement of the tool changer arm or workpiece loading and unloading operations. Simultaneously, the isolation structure reduces the mixing and accumulation of debris between the two areas, lowering the load on the chip removal system and shortening downtime for cleaning. The cylindrical structure design of the shock-absorbing limit post further reduces vibration noise during partition plate movement, extending the service life of the drive mechanism. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0015] Figure 2 This is a schematic diagram of the back structure of this utility model.

[0016] Figure 3 This is a partial cross-sectional structural diagram of the segmented barrier of this utility model.

[0017] Figure 4 This is a utility model Figure 3 A magnified schematic diagram of the structure at point A.

[0018] In the picture: 1. Machining center base; 2. Machine compartment cover; 3. Segmented barrier; 31. Storage cover; 32. Bearing shaft; 33. Mounting sleeve; 34. Partition plate; 35. Worm gear; 36. Drive shaft; 37. Worm; 38. Drive motor; 39. Vibration damping limit post; 4. Slide mechanism; 5. Spindle box; 6. Turret; 7. Tool mounting base; 8. Human-machine interface; 9. Worktable feed mechanism. Detailed Implementation

[0019] To enable those skilled in the art to better understand the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.

[0020] In the description of the embodiments, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the present invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. In the description of the utility model, it should be noted that unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in the present utility model based on the specific circumstances.

[0021] As attached Figure 1 To be continued Figure 4 As shown: This utility model provides a ram-type dual-spindle horizontal machining center, including a machining center base 1, a machine compartment cover 2, a segmented isolator 3, a ram mechanism 4, a spindle box 5, a tool turret 6, a tool mounting base 7, a human-machine interface 8, and a worktable feed mechanism 9. The worktable feed mechanism 9 and the machine compartment cover 2 are installed on the machining center base 1. The worktable feed mechanism 9 is located inside the machine compartment cover 2. Two corresponding ram mechanisms 4 and the segmented isolator 3 are fixedly installed on the machine compartment cover 2. The spindle box 5 is fixedly installed on each ram mechanism 4. The tool turret 6, the tool mounting base 7, and the tool changer are installed on the spindle box 5. The human-machine interface 8 is installed on the outside of the machine compartment cover 2 and is located near the machine compartment door of the machine compartment cover 2.

[0022] Furthermore, the segmented isolator 3 is fixedly installed on the inner wall of the machine housing 2 between the two slide mechanisms 4 by bolt assembly. Its main frame is made of Q235 cold-rolled steel plate bent into shape, and the surface is treated with electrostatic spraying for rust prevention. The blocking surface of the segmented isolator 3 is on the same vertical plane as the spindle center line of the two slide mechanisms 4. Through physical separation, the movement space of the two slide mechanisms 4 is completely independent, thereby forming a closed isolation protection for the machining area near the spindle box 5. The edge of the isolator is sealed with the inner wall of the machine housing 2 and the upper surface of the worktable feed mechanism 9 by rubber sealing strips, effectively preventing the movement of iron filings and coolant between the two machining areas, ensuring that the cutting environment and workpiece clamping status of the two machining areas do not interfere with each other.

[0023] Furthermore, the segmented barrier 3 includes a housing 31, a bearing shaft 32, a mounting sleeve 33, a partition plate 34, a worm gear 35, a drive shaft 36, a worm 37, a drive motor 38, and a shock-absorbing limiting post 39. Specifically: the housing 31 is made of cold-rolled steel plate welded into a fan-shaped shell structure, fixedly mounted on the engine compartment cover 2 with M12 hexagonal socket head cap bolts, and located at the symmetrical center of the two sliding ram mechanisms 4; the bearing shaft 32 is fixedly mounted inside the housing 31 via a bearing seat, and the mounting sleeve 33 is rotatably mounted on the bearing shaft 32 with a clearance fit. A deep groove ball bearing is fitted between the mounting sleeve 33 and the bearing shaft 32 to reduce rotational friction; the partition plate 34 is fixedly connected to the outside of the mounting sleeve 33 with countersunk bolts. On the side wall, worm gears 35 are symmetrically arranged on the left and right sides of the mounting sleeve 33. The two worm gears 35 are fixedly connected to the bearing shaft 32 by a flat key, and the end face of the worm gear 35 is positioned in contact with the end face of the mounting sleeve 33 by a thrust washer. Each worm gear 35 meshes with a worm 37 fixed on the drive shaft 36, which is rotatably mounted inside the lower part of the storage cover 31 through a bearing seat. The worm 37 and the drive shaft 36 are integrally forged structures. One end of the drive shaft 36 passes through the side wall of the storage cover 31 and is coaxially fixed to the output end of the servo drive motor 38, which is fixed on the outside of the storage cover 31 through a motor bracket, via a flexible coupling. On the bottom plate inside the lower part of the storage cover 31, a shock-absorbing and limiting post 39 is fixedly installed by a threaded connection.

[0024] Furthermore, the storage cover 31 is a fan-shaped cover structure with a central angle of 120°, and its opening faces the internal cavity of the cabin cover 2. The flange of the opening edge is sealed to the inner wall of the cabin cover 2 by bolts. A T-shaped sliding protrusion is integrally formed on the arc-shaped inner wall of the storage cover 31. This protrusion is in clearance fit with the T-shaped sliding groove processed on the arc-shaped surface of the partition plate 34 to guide the partition plate 34 when it rotates. The partition plate 34 is made of high-strength aluminum alloy plate and processed into a fan-shaped structure that is compatible with the storage cover 31. Its outer edge is wrapped with a rubber buffer strip. When the partition plate 34 rotates along the bearing shaft 32 under the drive mechanism, it can be completely stored in the inner cavity of the storage cover 31. At this time, it does not interfere with the up and down movement of the slide mechanism 4.

[0025] Furthermore, 2-4 shock-absorbing and limiting posts 39 are evenly arranged on one side of the partition plate 34 near the bottom of the storage cover 31. The shock-absorbing and limiting posts 39 are made of polyurethane elastic material, and their bottoms are fixedly connected to the threaded holes of the bottom plate of the storage cover 31 through M8 threads. When the partition plate 34 is completely retracted into the storage cover 31, the lower end face of the partition plate 34 contacts the top of the shock-absorbing and limiting post 39. The impact energy is absorbed by the elastic deformation of the polyurethane material, which restricts the further movement of the partition plate 34 and avoids it from having a hard collision with the bottom plate of the storage cover 31. The shock-absorbing and limiting post 39 has a cylindrical structure, and the distance between two adjacent posts is 150mm to ensure uniform force distribution.

[0026] Furthermore, the shock-absorbing limit post 39 is located in the middle of the two drive shafts 36, and the axes of the three are on the same horizontal line. The minimum distance between the shock-absorbing limit post 39 and the drive shaft 36 is 80mm, ensuring that they do not interfere with each other when moving. Each drive shaft 36 is controlled by an independent servo drive motor 38. The CNC system realizes the synchronous start and stop and speed adjustment of the two motors, which in turn drives the corresponding worm gear 37 to rotate synchronously. The meshing transmission ratio between the worm gear 37 and the worm wheel 35 is 1:30. The two worm wheels 35 achieve synchronous rotation under the drive of the worm gear 37, and drive the bearing shaft 32 to perform a single rotation around its own axis. The rotation angle of the bearing shaft 32 is monitored in real time by an encoder installed at its end. The CNC system sets the single rotation angle range to 0-180° to avoid the rotation angle exceeding 360°, which would cause the drive circuit to become entangled or the structure to interfere, and ensure that the partition plate 34 accurately switches between the two working states of "storage" and "blocking".

[0027] The working principle is as follows: First, the operator issues a processing command through the human-machine interface 8 outside the machine compartment cover 2. The equipment starts and completes initialization. The worktable feed mechanism 9 drives the workpiece to be processed to the preset processing position inside the machine compartment cover 2.

[0028] The two sliding ram mechanisms 4 on the machine housing cover 2 adjust their positions according to the machining instructions. The spindle box 5 drives the tool mounting seat 7 on the tool turret 6 to rotate. The tool changing arm cooperates to complete the tool change, so that the tools corresponding to the dual spindles are respectively aligned with the machining parts of the workpiece.

[0029] When it is necessary to isolate the two processing areas, the drive motor 38 of the segmented barrier 3 starts, driving the drive shaft 36 to rotate. The worm 37 on the drive shaft 36 rotates accordingly. The worm wheel 35 meshing with the worm 37 is driven by the driving force to drive the bearing shaft 32 to rotate. The bearing shaft 32 drives the partition plate 34 to rotate out of the storage cover 31 through the mounting sleeve 33.

[0030] During the rotation of the partition plate 34, the sliding protrusions on the inner wall of the storage cover 31 cooperate with the sliding groove of the partition plate 34 to guide it, so that the partition plate 34 moves smoothly between the two sliding ram mechanisms 4, forming a physical barrier to separate the two processing areas near the spindle box 5 and prevent iron filings, coolant and other substances from interfering with each other.

[0031] When tool changing, workpiece loading and unloading, or isolation is not required during processing, the drive motor 38 rotates in reverse, driving the partition plate 34 to rotate in reverse through transmission components such as worm 37, worm wheel 35, and bearing shaft 32, gradually retracting it into the storage cover 31.

[0032] When the partition plate 34 is fully retracted into the storage cover 31, the lower end face of the partition plate 34 contacts the shock-absorbing and limiting post 39. The shock-absorbing and limiting post 39 absorbs the impact through its own elastic deformation, restricts the excessive movement of the partition plate 34, and avoids a hard collision with the storage cover 31.

[0033] Throughout the machining process, the two slide mechanisms 4 drive the spindle box 5, turret 6 and other components to complete the machining operation independently. Due to the isolation effect of the segmented isolator 3, the cutting environment of the two machining areas does not affect each other, ensuring machining accuracy and operational safety.

[0034] Any technical solution that achieves the above-mentioned technical effects by utilizing the technical solution described in this utility model, or by designing a similar technical solution inspired by the technical solution described in this utility model, falls within the protection scope of this utility model.

Claims

1. A sliding ram-type twin-spindle horizontal machining center, characterized in that, The machining center includes a base (1), a nacelle cover (2), a segmented barrier (3), a slide mechanism (4), a spindle box (5), a turret (6), a tool mount (7), a human-machine interface (8), and a table feed mechanism (9). The machining center base (1) is equipped with a table feed mechanism (9) and a nacelle cover (2). The table feed mechanism (9) is located inside the nacelle cover (2). The nacelle cover (2) is fixedly equipped with two corresponding slide mechanisms (4) and the segmented barrier (3). The spindle box (5) is fixedly installed on each slide mechanism (4). The spindle box (5) is equipped with a turret (6), a tool mount (7), and a tool changer. The human-machine interface (8) is installed on the outside of the nacelle cover (2) and is located near the nacelle door of the nacelle cover (2).

2. A dual-spindle horizontal machining center with a ram according to claim 1, characterized in that: The segmented barrier (3) is installed between the two slide mechanisms (4), which separates the two slide mechanisms (4) and thus isolates and protects the processing area near the spindle box (5), so that the two processing areas do not interfere with each other.

3. A dual-spindle horizontal machining center with a ram according to claim 2, characterized in that: The segmented barrier (3) includes a housing cover (31), a bearing shaft (32), a mounting sleeve (33), a partition plate (34), a worm gear (35), a drive shaft (36), a worm (37), a drive motor (38), and a shock-absorbing limiting post (39). The housing cover (31) is fixedly installed on the engine compartment cover (2) and located between the two sliding ram mechanisms (4). The mounting sleeve (33) is rotatably installed on the bearing shaft (32) fixedly installed inside the housing cover (31). The mounting sleeve (33) is fixedly installed on the mounting sleeve (33). The partition plate (34) has worm gears (35) on both sides of the mounting sleeve (33). The two worm gears (35) are symmetrically fixed on the bearing shaft (32). Each worm gear (35) meshes with a worm (37) fixedly installed on the drive shaft (36) rotatably installed inside the storage cover (31). One end of the drive shaft (36) is fixedly connected to the output end of the drive motor (38) fixedly installed on the outside of the storage cover (31). A shock-absorbing limit post (39) is fixedly installed inside the storage cover (31).

4. A dual-spindle horizontal machining center with a ram according to claim 3, characterized in that: The storage cover (31) is a fan-shaped cover structure with its opening facing the cabin cover (2) and communicating with its interior. The inner wall of the storage cover (31) is engaged with the sliding groove of the arc-shaped surface of the partition plate (34) through sliding protrusions. The partition plate (34) is a fan-shaped structure that can be completely stored inside the storage cover (31).

5. A dual-spindle horizontal machining center with a ram according to claim 4, characterized in that: At least two shock-absorbing and limiting posts (39) are provided on one side of the partition plate (34). The shock-absorbing and limiting posts (39) can limit the range of motion of the partition plate (34) stored in the storage cover (31). The shock-absorbing and limiting posts (39) are cylindrical structures.

6. A dual-spindle horizontal machining center with a ram according to claim 5, characterized in that: The shock-absorbing limit post (39) is located between the two drive shafts (36), and the two do not interfere with each other. Each drive shaft (36) can drive the corresponding worm wheel (35) to rotate through its own worm (37). The two worm wheels (35) rotate synchronously, and at the same time drive the bearing shaft (32) to perform a single rotational movement of less than 360 degrees.

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