A semi-automatic feed mechanism of an automated numerical control machine tool

Abstract

The application relates to the technical field of feeding mechanisms of numerical control machine tools, and particularly discloses a semi-automatic feeding mechanism of an automatic numerical control machine tool, which comprises a supporting plate, a threaded rod connected to one end of the supporting plate through a bearing, and a mounting plate through which the other end of the threaded rod is arranged, a servo motor is mounted on the mounting plate, the shaft end of the servo motor is coaxially connected to the other end of the threaded rod through a key, two motor control buttons for controlling the forward and reverse rotation of the servo motor are mounted on the outer side of the supporting plate, a lead screw is further connected between the supporting plate and the mounting plate through a bearing, and a limiting rod is fixedly connected between the supporting plate and the mounting plate. The application can be positioned at any position, and after the carrier moves to a machining position, the carrier will not move due to the continuous rotation of the threaded rod, so that the application can be conveniently used by inexperienced staff, and the carrier and other components will not collide due to the excessive rotation of the threaded rod, so that the products to be machined on the carrier can be prevented from being damaged.

Description

Technical Field

[0001] This invention relates to the field of CNC machine tool feed mechanism technology, specifically a semi-automatic feed mechanism for an automated CNC machine tool. Background Technology

[0002] The feed mechanism of a CNC machine tool continuously feeds the workpiece into the cutting layer to produce a complete surface, such as the continuous linear movement of the cutting tool during turning. Existing CNC machine tool feed mechanisms are divided into fully automatic and semi-automatic. Fully automatic feed mechanisms only require the input of specific parameters, and the feed mechanism automatically completes continuous linear movement. However, due to its high system complexity, it leads to higher maintenance and repair costs. In addition, its ability to cope with abnormalities is weak, resulting in poor adaptability. Semi-automatic feed mechanisms have high reliability, lower maintenance and repair costs, and high flexibility, and can adapt to non-standardized needs.

[0003] However, existing semi-automatic feeding mechanisms, such as the machine tool feeding device disclosed in CN118404371B, use a positioning cylinder to be inserted into a positioning slot for positioning, which causes the feeding mechanism to be unable to be positioned at any position.

[0004] Therefore, a semi-automatic feed mechanism for automated CNC machine tools is needed to solve the above problems. Summary of the Invention

[0005] The purpose of this invention is to provide a semi-automatic feed mechanism for automated CNC machine tools, so as to solve the problem mentioned in the background art that existing feed mechanisms cannot be positioned at arbitrary locations.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A semi-automatic feed mechanism for an automated CNC machine tool includes a support plate and a threaded rod with one end bearing connected thereto. The other end of the threaded rod is also bearing-connected through a mounting plate, on which a servo motor is mounted. The shaft of the servo motor is coaxially keyed to the other end of the threaded rod. Two motor control buttons for controlling the forward and reverse rotation of the servo motor are mounted on the outer side of the support plate. A lead screw is also bearing-connected between the support plate and the mounting plate, and a limit rod is fixedly connected between the support plate and the mounting plate. Both the lead screw and the limit rod are located below the threaded rod and are symmetrically arranged about the axis of the threaded rod. The inner side of the support plate is connected to the threaded rod through a steering limiting mechanism, which includes a tapered sleeve keyed to the outer side of the threaded rod. Both the lead screw and the limit rod are movably connected through a platform, which is connected to the threaded rod through a displacement anti-overrunning mechanism, which includes a sleeve threaded onto the outer side of the threaded rod.

[0008] Preferably, the support plate is a C-shaped structure that facilitates support of the steering restriction mechanism.

[0009] Preferably, the steering limiting mechanism further includes a transmission ring movably sleeved on the outside of the threaded rod, and the outside of the transmission ring is connected to the inside of the collar via a one-way bearing.

[0010] Preferably, the cone sleeve is frustum-shaped, and the transmission ring has a frustum-shaped groove that matches the cone sleeve on the side facing the cone sleeve. Both the outer surface of the cone sleeve and the inner surface of the frustum-shaped groove on the transmission ring are rough, non-slip surfaces.

[0011] Preferably, a push-pull ring is fixedly connected to the upper end of the collar, and a support tube is axially connected to both sides of the collar. One end of a corresponding support rod extends into the open end of the support tube, and the other ends of the two support rods are respectively axially connected to both sides inside the support plate. A flat ring structure is fixedly provided at the open end of the support tube and the end of the corresponding support rod near the support plate, and a spring is provided between the two opposing flat ring structures.

[0012] Preferably, the displacement anti-crossing-line mechanism further includes an equipment box fixedly connected to the inner side of the support plate, and one end of an adjusting shaft is connected to the inner bottom surface of the equipment box by a bearing. The other end of the adjusting shaft is a bearing that extends out of the equipment box, and the part of the adjusting shaft inside the equipment box is connected to a lead screw through a worm gear structure. A front baffle and a rear baffle are also provided on the threaded rod, the lead screw, and the limiting rod, and the front baffle and the rear baffle are respectively provided on both sides of the platform. The front baffle is located close to the support plate, and the middle of both the front baffle and the rear baffle is movably penetrated by the threaded rod. One end of the front baffle is penetrated by the lead screw bearing, and the other end of the front baffle is fixedly penetrated by the limiting rod. One end of the rear baffle is threaded through by the lead screw, and the other end of the rear baffle is movably penetrated by the limiting rod.

[0013] Preferably, the displacement anti-crossing mechanism further includes two mounting slots disposed on the platform, and the two mounting slots are symmetrically arranged about the axis of the threaded rod. Two connecting slots are disposed on the outer side of the sleeve opposite to the mounting slots, and the two connecting slots are also symmetrically arranged about the axis of the threaded rod. Each mounting slot is equipped with a corresponding connecting rod, and one end of the connecting rod extends movably through to the outside of the platform, while the other end of the connecting rod matches the shape and size of the connecting slot.

[0014] Preferably, the middle part of the connecting rod is also provided with a flat annular structure, and the flat annular structure on the connecting rod is connected to the inner side of the opening end of the mounting groove through a spring.

[0015] Preferably, the platform is further provided with four through slots, the two ends of the guide frame are sleeved on the outside of the threaded rod, and the two ends of the guide frame are respectively located on both sides of the platform, and the two ends of the guide frame are connected by four strips. The four through slots are movably penetrated by the four strips. The platform is also provided with four strip-shaped through slots, and the strip-shaped through slots connect the through slots and the mounting slots.

[0016] Preferably, each strip has a V-shaped guide groove extending through both sides, and a corresponding guide rod slides through the V-shaped guide groove. The guide rod passes through the corresponding strip groove, and the other end of the guide rod is vertically fixed to the connecting rod.

[0017] Compared with the prior art, the beneficial effects of the present invention are: the semi-automatic feed mechanism of this automated CNC machine tool can not only be positioned at any location, but also prevent the platform from moving further due to the continued rotation of the threaded rod after it has moved to the processing position. This makes it easier for inexperienced operators to use, and prevents the platform from colliding with other components due to excessive rotation of the threaded rod, thereby avoiding damage to the product to be processed on the platform.

[0018] 1. Through the one-way bearing between the transmission ring and the sleeve, and the squeezing and locking of the transmission ring and the tapered sleeve, the threaded rod can only rotate in one direction. During the one-way rotation of the threaded rod, the platform can only move in one direction. After the platform approaches the machining position, the guide frame gradually contacts the rear baffle, which causes the rear baffle to move relative to the platform. During this process, the V-shaped guide groove and the guide rod drive the connecting rod to move, so that it is gradually pulled out of the connecting groove. When the platform moves to the machining position, the end of the connecting rod is completely pulled out of the connecting groove. At this time, the platform no longer continues to move, while the sleeve continues to rotate with the threaded rod. This ensures that the platform will not move due to the continued movement of the threaded rod after it has moved to the machining position, allowing even inexperienced operators to quickly move the platform to the machining position using the motor control button.

[0019] 2. By using the displacement anti-overrun mechanism, the screw can be driven to rotate after the adjustment shaft is rotated, thereby changing the position of the rear baffle. By changing the position of the rear baffle, the distance the platform moves can be changed. In addition, with the cooperation of the steering restriction mechanism, the platform can only move in one direction, so that the platform can be positioned at any position.

[0020] 3. The front and rear baffles limit the movement range of the platform, preventing it from colliding with other components on the machine tool due to excessive rotation of the threaded rod, thus avoiding damage to the products to be processed on the platform. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the main structure of the present invention;

[0022] Figure 2 This is a schematic diagram of the structure of the present invention from a bottom view;

[0023] Figure 3 This is a cross-sectional view of the equipment box of the present invention;

[0024] Figure 4 For the present invention Figure 3 Enlarged structural diagram of point A in the middle;

[0025] Figure 5 This is a schematic diagram of the separation structure of the upper and lower parts of the platform of the present invention;

[0026] Figure 6 For the present invention Figure 5 Enlarged structural diagram of point B;

[0027] Figure 7 This is a schematic diagram of the connection structure between the threaded rod and the lower structure of the platform in this invention;

[0028] Figure 8 This is a schematic diagram of the connection structure between the platform and the guide frame of the present invention;

[0029] Figure 9 For the present invention Figure 8 Enlarged structural diagram of point C;

[0030] Figure 10 For the present invention Figure 8 Enlarged structural diagram of point D;

[0031] Figure 11 This is a schematic cross-sectional view of the platform structure of the present invention;

[0032] Figure 12 For the present invention Figure 11 Enlarged structural diagram of point E in the middle;

[0033] Figure 13 This is a partial cross-sectional view of the connection between the support plate and the threaded rod of the present invention.

[0034] Figure 14 For the present invention Figure 13 A magnified structural diagram of point F in the middle.

[0035] In the diagram: 1. Support plate; 2. Mounting plate; 3. Threaded rod; 4. Servo motor; 5. Equipment box; 6. Adjusting shaft; 7. Front baffle; 8. Rear baffle; 9. Lead screw; 10. Platform; 11. Limiting rod; 12. Motor control button; 13. Worm gear structure; 14. Sleeve; 15. Connecting rod; 16. Spring 1; 17. Guide rod; 18. V-shaped guide groove; 19. Guide frame; 20. Tapered sleeve; 21. Collar; 22. Push-pull ring; 23. Support tube; 24. Support rod; 25. Spring 2; 26. Connecting groove; 27. Mounting groove; 28. Strip groove; 29. ​​Through groove; 30. Transmission ring. Detailed Implementation

[0036] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. 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 are within the scope of protection of the present invention.

[0037] Please see Figures 1-14 The present invention provides the following technical solution:

[0038] Example 1: To avoid the problem of insufficient operator experience causing the stage 10 to move back and forth in the machining position during operation of the semi-automatic feed mechanism of conventional automated CNC machine tools, the following technical solution is provided: A semi-automatic feed mechanism for an automated CNC machine tool includes a support plate 1 and a threaded rod 3 with a bearing at one end connected to it. The bearing at the other end of the threaded rod 3 passes through a mounting plate 2, and a servo motor 4 is mounted on the mounting plate 2. The shaft end of the servo motor 4 is coaxially keyed to the other end of the threaded rod 3. A control mechanism is mounted on the outer side of the support plate 1. Two motor control buttons 12 control the forward and reverse rotation of the servo motor 4. A lead screw 9 is also connected between the support plate 1 and the mounting plate 2 by a bearing. A limit rod 11 is also fixedly connected between the support plate 1 and the mounting plate 2. The lead screw 9 and the limit rod 11 are both located below the threaded rod 3 and are symmetrically arranged about the axis of the threaded rod 3. The inner side of the support plate 1 is connected to the threaded rod 3 through a steering restriction mechanism. The steering restriction mechanism includes a tapered sleeve 20 that is keyed to the outside of the threaded rod 3. The support plate 1 has a C-shaped structure to facilitate support of the steering restriction mechanism.

[0039] The steering limiting mechanism also includes a transmission ring 30 movably sleeved on the outside of the threaded rod 3, and the outer side of the transmission ring 30 is connected to the inner side of the collar 21 through a one-way bearing. The cone sleeve 20 is frustoconical, and the side of the transmission ring 30 facing the cone sleeve 20 is provided with a frustoconical groove that matches the cone sleeve 20. The outer surface of the cone sleeve 20 and the inner surface of the frustoconical groove on the transmission ring 30 are both rough anti-slip surfaces. The upper end of the collar 21 is fixedly connected to a push-pull ring 22, and both sides of the collar 21 are axially connected to support tubes 23. One end of a corresponding support rod 24 is inserted into the open end of the support tube 23, and the other ends of the two support rods 24 are respectively axially connected to both sides inside the support plate 1. The open end of the support tube 23 and the end of the corresponding support rod 24 near the support plate 1 are both fixedly provided with flat annular structures, and a spring 25 is provided between the two opposing flat annular structures.

[0040] according to Figures 8-9 as well as Figures 13-14 The operator pushes and pulls the push-pull ring 22 to control whether the cone sleeve 20 engages with the transmission ring 30. When the transmission ring 30 engages with the cone sleeve 20, since the transmission ring 30 can only rotate in one direction, it can restrict the cone sleeve 20 from rotating in the opposite direction, which can also restrict the threaded rod 3 from rotating in the opposite direction. At this time, it can avoid the problem that the operator's lack of experience may cause the platform 10 to move back and forth in the processing position, resulting in the platform 10 being unable to be stably positioned in the processing position. Subsequently, with the help of the displacement anti-overrun mechanism, it can be ensured that the platform 10 moves quickly and is positioned in the processing position.

[0041] During the movement of the aforementioned transmission ring 30, relative movement occurs between the support tube 23 and the support rod 24, and the stretching and restoring of the spring 25 ensures that the transmission ring 30 is stably engaged with the cone sleeve 20, or that the two are stably separated.

[0042] Example 2: To solve the problem that the semi-automatic feed mechanism of the previous automated CNC machine tool is not convenient to be positioned at any position, the following technical solution is provided. Specifically, the lead screw 9 and the limit rod 11 are both movably installed through the platform 10, and the platform 10 is connected to the threaded rod 3 through the displacement anti-overrun mechanism. The displacement anti-overrun mechanism includes a sleeve 14 threaded on the outside of the threaded rod 3.

[0043] The displacement anti-crossing mechanism also includes an equipment box 5 fixedly connected to the inner side of the support plate 1. One end of an adjusting shaft 6 is connected to a bearing on the inner bottom surface of the equipment box 5, and the other end of the adjusting shaft 6 is a bearing extending through the equipment box 5. The part of the adjusting shaft 6 inside the equipment box 5 is connected to the lead screw 9 through a worm gear structure 13. A front baffle 7 and a rear baffle 8 are also provided on the threaded rod 3, the lead screw 9, and the limiting rod 11. The front baffle 7 and the rear baffle 8 are respectively provided on both sides of the platform 10. The front baffle 7 is located close to the support plate 1, and the middle of the front baffle 7 and the rear baffle 8 are... All parts are movably penetrated by the threaded rod 3. One end of the front baffle 7 is penetrated by the bearing of the screw 9, and the other end of the front baffle 7 is fixedly penetrated by the limiting rod 11. One end of the rear baffle 8 is threaded through by the screw 9, and the other end of the rear baffle 8 is movably penetrated by the limiting rod 11. The displacement anti-crossing-line mechanism also includes two mounting slots 27 set on the platform 10, and the two mounting slots 27 are symmetrically arranged about the axis of the threaded rod 3. Two connecting slots 26 are set on the outer side of the sleeve 14 opposite to the mounting slots 27, and the two connecting slots 26 are also about the axis of the threaded rod 3. Symmetrically arranged, each mounting slot 27 is equipped with a corresponding connecting rod 15, one end of which extends movably through the outside of the platform 10, and the other end of which matches the shape and size of the connecting slot 26. A flat annular structure is also provided in the middle of the connecting rod 15, and this flat annular structure is connected to the inner side of the opening end of the mounting slot 27 via a spring 16. The platform 10 also has four through slots 29. The outer sides of the threaded rod 3 are fitted with the two ends of a guide frame 19, and the two ends of the guide frame 19 are respectively positioned on the platform. The two sides of the platform 10 and the two ends of the guide frame 19 are connected by four strips. The four through slots 29 are movably penetrated by the four strips. The platform 10 is also provided with four strip-shaped through slots 28, and the strip-shaped through slots 28 pass through the through slots 29 and the mounting slots 27. Each strip is provided with a V-shaped guide slot 18 that passes through both sides of it. One end of the corresponding guide rod 17 slides through the V-shaped guide slot 18. The guide rod 17 passes through the corresponding strip-shaped through slot 28, and the other end of the guide rod 17 is vertically fixed to the connecting rod 15.

[0044] according to Figure 2 and Figure 4 When the adjusting shaft 6 is rotated, the lead screw 9 can be driven to rotate through the worm gear structure 13. Since the worm gear structure 13 has a self-locking characteristic, it can prevent the lead screw 9 from rotating arbitrarily.

[0045] When the lead screw 9 rotates, the position of the rear baffle 8 can be adjusted by the limiting rod 11, which in turn can adjust the final position of the table 10, helping inexperienced workers to quickly move the table 10 to the processing position.

[0046] In addition, the rotation of the platform 10 can be restricted by the lead screw 9 and the limiting rod 11, so that it can only move along the axis of the threaded rod 3;

[0047] according to Figures 5-8 as well as Figures 10-12 By limiting the lead screw 9 and the limiting rod 11, and by engaging the connecting rod 15 with the corresponding connecting groove 26, the threaded rod 3 can drive the sleeve 14 to move when rotating, and carry the platform 10 to move synchronously.

[0048] When the rear baffle 8 contacts the guide frame 19, causing the guide frame 19 to shift relative to the platform 10, the V-shaped guide groove 18 and the guide rod 17 drive the connecting rod 15 to move until the connecting rod 15 disengages from the connecting groove 26. During this process, the spring 16 is compressed.

[0049] When the connecting rod 15 disengages from the connecting groove 26, the sleeve 14 is no longer limited by the lead screw 9 and the limiting rod 11, causing it to rotate synchronously with the threaded rod 3, while the platform 10 stops moving. This allows the platform 10 to quickly move to the processing position and then stop moving. Since the steering limiting mechanism restricts the rotation direction of the threaded rod 3, it can prevent the platform 10 from moving in the opposite direction, thus allowing the platform 10 to be quickly positioned at the processing position. Since the rear baffle 8 can be fixed at any position, the platform 10 can be positioned at any position.

[0050] Similarly, the front baffle 7 is designed to prevent the platform 10 from moving too close to the staff and to prevent the products on the platform 10 from hitting the staff.

[0051] The front baffle 7 and the rear baffle 8 can also prevent the threaded rod 3 from rotating too many times, causing the platform 10 to move and collide with other components, thus preventing the products on it from being damaged.

[0052] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0053] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A semi-automatic feed mechanism for an automated CNC machine tool, comprising a support plate (1) and a threaded rod (3) with a bearing at one end connected thereto, characterized in that: The other end of the threaded rod (3) is pierced through the mounting plate (2) by a bearing, and a servo motor (4) is mounted on the mounting plate (2). The shaft end of the servo motor (4) is coaxially keyed to the other end of the threaded rod (3). Two motor control buttons (12) for controlling the forward and reverse rotation of the servo motor (4) are mounted on the outside of the support plate (1). A lead screw (9) is also pierced between the support plate (1) and the mounting plate (2), and a limit rod (11) is fixedly connected between the support plate (1) and the mounting plate (2). The lead screw (9) and the limit rod (11) are both located below the threaded rod (3), and the lead screw (9) and the limit rod (11) are symmetrical about the axis of the threaded rod (3). The inner side of the support plate (1) is connected to the threaded rod (3) through a steering limiting mechanism. The steering limiting mechanism includes a tapered sleeve (20) keyed to the outside of the threaded rod (3). The lead screw (9) and the limiting rod (11) are both movably connected through the platform (10). The platform (10) is connected to the threaded rod (3) through a displacement anti-overrun mechanism. The displacement anti-overrun mechanism includes a sleeve (14) threaded onto the outside of the threaded rod (3). The displacement anti-overrun mechanism also includes two mounting slots (27) on the platform (10). The two mounting slots (27) are symmetrically arranged about the axis of the threaded rod (3). The outer side of the sleeve (14) is positioned opposite to the mounting slot (27). There are two connecting slots (26), and the two connecting slots (26) are symmetrically arranged about the axis of the threaded rod (3). Each mounting slot (27) is equipped with a corresponding connecting rod (15), and one end of the connecting rod (15) extends movably through to the outside of the platform (10). The other end of the connecting rod (15) matches the shape and size of the connecting slot (26). The middle part of the connecting rod (15) is also provided with a flat ring structure, and the flat ring structure on the connecting rod (15) is connected to the inner side of the opening end of the mounting slot (27) through a spring (16). The platform (10) is also provided with four through slots (29). The two ends of the guide frame (19) are sleeved on the outside of the threaded rod (3). The two ends of the guide frame (19) are respectively located on both sides of the platform (10), and the two ends of the guide frame (19) are connected by four strips. The four through slots (29) are movably penetrated by the four strips. The platform (10) is also provided with four strip slots (28), and the strip slots (28) pass through the through slots (29) and the mounting slots (27). Each strip is provided with a V-shaped guide slot (18) that passes through both sides. A corresponding guide rod (17) slides through the V-shaped guide slot (18). The guide rod (17) passes through the corresponding strip slot (28), and the other end of the guide rod (17) is vertically fixed to the connecting rod (15).

2. The semi-automatic feed mechanism for an automated CNC machine tool according to claim 1, characterized in that: The support plate (1) is a C-shaped structure that facilitates support of the steering restriction mechanism.

3. The semi-automatic feed mechanism for an automated CNC machine tool according to claim 2, characterized in that: The steering restriction mechanism also includes a transmission ring (30) movably sleeved on the outside of the threaded rod (3), and the outside of the transmission ring (30) is connected to the inside of the collar (21) via a one-way bearing.

4. The semi-automatic feed mechanism of an automated CNC machine tool according to claim 3, characterized in that: The cone sleeve (20) is frustum-shaped, and the transmission ring (30) has a frustum-shaped groove that matches the cone sleeve (20) on the side facing the cone sleeve (20). The outer surface of the cone sleeve (20) and the inner surface of the frustum-shaped groove on the transmission ring (30) are both rough anti-slip surfaces.

5. The semi-automatic feed mechanism of an automated CNC machine tool according to claim 4, characterized in that: The upper end of the collar (21) is fixedly connected to a push-pull ring (22), and both sides of the collar (21) are axially connected to support tubes (23). One end of a corresponding support rod (24) extends into the open end of the support tube (23), and the other ends of the two support rods (24) are respectively axially connected to both sides inside the support plate (1). The open end of the support tube (23) and the end of the corresponding support rod (24) near the support plate (1) are both fixedly provided with flat ring structures, and a spring (25) is provided between the two opposite flat ring structures.

6. The semi-automatic feed mechanism for an automated CNC machine tool according to claim 5, characterized in that: The displacement anti-crossing mechanism also includes an equipment box (5) fixedly connected to the inner side of the support plate (1), and one end of an adjusting shaft (6) is connected to the inner bottom surface bearing of the equipment box (5). The other end of the adjusting shaft (6) is provided through the equipment box (5), and the part of the adjusting shaft (6) inside the equipment box (5) is connected to the lead screw (9) through a worm gear structure (13). The threaded rod (3), the lead screw (9) and the limiting rod (11) are also provided with a front baffle (7) and a rear baffle (8). The front baffle (7) and the rear baffle (8) are respectively disposed on both sides of the platform (10). The front baffle (7) is disposed close to the support plate (1), and the middle of the front baffle (7) and the rear baffle (8) are movably penetrated by the threaded rod (3). One end of the front baffle (7) is penetrated by the bearing of the lead screw (9), and the other end of the front baffle (7) is fixedly penetrated by the limiting rod (11). One end of the rear baffle (8) is threaded through by the lead screw (9), and the other end of the rear baffle (8) is movably penetrated by the limiting rod (11).

Images