Automatic feed mechanism of numerical control machine tool

Abstract

The utility model discloses an automatic feed mechanism of a numerical control machine tool. The automatic feed mechanism of the numerical control machine tool comprises a first linear motion platform, a second linear motion platform and a lathe tool rest, the first linear motion platform is arranged on a machine tool base and used for driving the second linear motion platform to reciprocate in the X-axis direction. The second linear motion platform is arranged on the first linear motion platform and used for driving the lathe tool rest to reciprocate in the Y-axis direction. And the lathe saddle is arranged on the second linear motion platform. The first linear motion platform is used for driving the lathe tool rest to move in the axial direction, the second linear motion platform is used for driving the lathe tool rest to feed in the Y-axis direction, and therefore movement and feed of the lathe tool rest are automatically and accurately controlled, the machining process of a rod-shaped structure is rapidly and accurately controlled, and the machining speed and the machining precision are effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of numerical control machine tools, in particular to an automatic feed mechanism of a numerical control machine tool. Background Art

[0002] Some machine tools are used for machining rod-shaped structures such as shafts and tubes. Their main structures include a machine base, spindle, motor, chuck, tool holder, etc. The motor and spindle serve as the rotational drive structures for the rod-shaped structure, and the chuck serves as the fixed structure for the rod-shaped structure, which enables the rod-shaped structure to be firmly fixed, allowing the rod-shaped structure to rotate stably. When machining rod-shaped structures, general machining personnel calculate the tool movement distance and feed amount based on the machining requirements. In actual operation, a manual rocker is required to push the tool to move, and the tool feed is also manually pushed to complete the predetermined cutting amount and machining distance on the rod-shaped structure. This type of manual machine tool often cannot accurately control the feed and tool movement, resulting in insufficient machining accuracy. Utility Model Content

[0003] In order to solve the technical problem of insufficient machining accuracy of machine tools in the prior art, one of the purposes of the present utility model is to provide an automatic feed mechanism for a CNC machine tool.

[0004] One of the purposes of this utility model is achieved by the following technical solution:

[0005] An automatic feed mechanism for a numerically controlled machine tool, comprising a first linear motion platform, a second linear motion platform and a lathe tool rest;

[0006] The first linear motion platform is arranged on the machine tool base and is used to drive the second linear motion platform to move back and forth along the X-axis direction;

[0007] The second linear motion platform is arranged on the first linear motion platform and is used to drive the lathe tool holder to move back and forth along the Y-axis direction;

[0008] The lathe tool post is arranged on the second linear motion platform.

[0009] Optionally, the first linear motion platform includes a first sliding assembly and a first driving assembly;

[0010] The second linear motion platform is disposed on the first sliding assembly, and the second linear motion platform is also connected to the first driving assembly.

[0011] Optionally, the first drive assembly includes a first bearing seat, a first motor seat, a first screw rod, a first nut, a first screw rod seat and a first motor;

[0012] The first screw rod is arranged along the X-axis direction, the first bearing seat and the first motor seat are respectively provided at both ends of the first screw rod, the first nut is provided on the first screw rod, the first screw rod seat is provided on the first nut, the first motor is provided on the first motor seat, and the first motor is connected to the first screw rod to drive the first screw rod to rotate;

[0013] The second linear motion platform is connected to the first screw seat.

[0014] Optionally, the first sliding assembly includes a first guide rail arranged along the X-axis direction and a first sliding block provided on the first guide rail;

[0015] The second linear motion platform is arranged on the first sliding block.

[0016] Optionally, the second linear motion platform includes an upper slide plate, a lower slide plate, a second sliding assembly and a second driving assembly;

[0017] The lower slide is arranged on the first linear motion platform, the second sliding assembly and the second driving assembly are arranged on the lower slide, and the upper slide is arranged on the second sliding assembly and connected to the second driving assembly;

[0018] The lathe tool holder is arranged on the upper slide plate.

[0019] Optionally, the second drive assembly includes a second bearing seat, a second motor seat, a second screw rod, a second nut, a second screw rod seat and a second motor;

[0020] The second screw is arranged on the lower sliding plate along the Y-axis direction, the second bearing seat and the second motor seat are provided on the lower sliding plate and are respectively provided at both ends of the second screw, the second nut is provided on the second screw, the second screw seat is provided on the second nut, the second motor is provided on the second motor seat, and the second motor is connected to the second screw to drive the second screw to rotate;

[0021] The upper slide plate is connected to the second screw rod seat.

[0022] Optionally, the second sliding assembly includes a second guide rail arranged along the Y-axis direction and a second sliding block provided on the second guide rail;

[0023] The upper slide plate is arranged on the second slide block.

[0024] Optionally, the automatic tool feed mechanism of the CNC machine tool further includes a tool preparation mechanism for installing a tool, and the tool preparation mechanism is arranged on the second linear motion platform.

[0025] Optionally, the tool preparation mechanism includes a tool holder plate and a plurality of tool preparation holders;

[0026] The tool holder plate is provided with a plurality of T-slots, and the backup tool holder is arranged on the T-slots.

[0027] Optionally, the spare tool holder includes a tool holder, a connecting piece, an adjusting screw and a lifting frame;

[0028] The two lifting frames are respectively arranged on both sides of the knife holder in a liftable manner. A through hole is provided on the knife holder. The connecting piece is passed through the through hole. Both ends of the connecting piece protrude from the through hole respectively. The upper end of the adjusting screw is threadedly connected to the lifting frame, and the lower end of the adjusting screw is rotatably connected to the protruding part of the connecting piece.

[0029] Compared with the prior art, the beneficial effects of the present invention are:

[0030] In the utility model, the first linear motion platform is used to drive the lathe tool holder to move along the axial direction, and the second linear motion platform is used to drive the lathe tool holder to feed along the Y-axis direction, thereby automatically and accurately controlling the movement and feed of the lathe tool holder, quickly and accurately controlling the processing process of the rod-shaped structure, and effectively improving the processing speed and processing accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 This is a schematic structural diagram of the automatic feed mechanism of a CNC machine tool of the present utility model;

[0032] Figure 2 This is an exploded schematic diagram of the automatic feed mechanism of a CNC machine tool of the present invention;

[0033] Figure 3 This is another exploded schematic diagram of the automatic feed mechanism of a CNC machine tool of the present invention;

[0034] Figure 4 The utility model is a structural diagram of the standby tool holder in the automatic feed mechanism of the CNC machine tool.

[0035] Description of the accompanying drawings:

[0036] 1. First linear motion platform; 11. First sliding assembly; 111. First guide rail; 112. First slider; 12. First drive assembly; 121. First bearing seat; 122. First motor seat; 123. First screw rod; 124. First nut; 125. First screw rod seat; 126. First motor;

[0037] 2. Second linear motion platform; 21. Second sliding assembly; 211. Second guide rail; 212. Second slider; 22. Second drive assembly; 221. Second bearing seat; 222. Second motor seat; 223. Second screw rod; 224. Second nut; 225. Second screw rod seat; 226. Second motor; 23. Upper slide; 24. Lower slide.

[0038] 3. Lathe tool holder;

[0039] 4. Knife preparation mechanism; 41. Knife holder plate; 42. Knife preparation holder; 421. Knife holder; 422. Connecting piece; 423. Adjusting screw; 424. Lifting frame;

[0040] 5. Machine tool base. DETAILED DESCRIPTION

[0041] The following is a combination of the appended examples of the present application Figure 1 To the attached Figure 4 , clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the described embodiments are only part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of this application.

[0042] It should be noted that all directional indications in the embodiments of the present application (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0043] In addition, the descriptions of "first", "second", etc. in this application are for descriptive purposes only and should not be understood as indicating or implying their relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of such features. In addition, the technical solutions between the various embodiments can be combined with each other, but this must be based on the fact that they can be implemented by ordinary technicians in this field. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0044] like Figure 1-2As shown, the present invention provides an automatic tool feed mechanism for a CNC machine tool, comprising a first linear motion platform 1, a second linear motion platform 2, and a lathe tool post 3. Specifically, the first linear motion platform 1 is mounted on a machine tool base 5 and is configured to drive the second linear motion platform 2 for reciprocating motion along the X-axis. The second linear motion platform 2 is mounted on the first linear motion platform 1 and is configured to drive the lathe tool post 3 for reciprocating motion along the Y-axis. The lathe tool post 3 is mounted on the second linear motion platform 2.

[0045] In the utility model, the first linear motion platform 1 is used to drive the lathe tool holder 3 to move along the axial direction, and the second linear motion platform 2 is used to drive the lathe tool holder 3 to feed along the Y-axis direction, thereby automatically and accurately controlling the movement and feed of the lathe tool holder 3, quickly and accurately controlling the processing process of the rod-shaped structure, and effectively improving the processing speed and processing accuracy.

[0046] Regarding the X-axis direction and the Y-axis direction, specifically, the X-axis direction is in the same direction as the axial direction of the rod-shaped structure, which is the moving direction of the tool or lathe tool holder 3, and the Y-axis direction is a direction perpendicular to the X-axis direction, which is the feed direction of the tool or lathe tool holder 3.

[0047] like Figure 2 As shown, the first linear motion platform 1 includes a first sliding assembly 11 and a first driving assembly 12. The second linear motion platform 2 is disposed on the first sliding assembly 11 and is further connected to the first driving assembly 12.

[0048] Specifically, if Figure 2 As shown, the first drive assembly 12 includes a first bearing seat 121, a first motor seat 122, a first screw 123, a first nut 124, a first screw seat 125, and a first motor 126. The first screw 123 is arranged along the X-axis direction, and the first bearing seat 121 and the first motor seat 122 are respectively arranged at the two ends of the first screw 123. Specifically, the two ends of the first screw 123 are respectively connected to the first bearing seat 121 and the first motor seat 122 for rotation. For example, the first screw 123 is connected to the first bearing seat 121 and the first motor seat 122 for rotation via a bearing. The first nut 124 is arranged on the first screw 123, the first screw seat 125 is arranged on the first nut 124, and the first motor 126 is arranged on the first motor seat 122. The first motor 126 is connected to the first screw 123 to drive the first screw 123 to rotate. The second linear motion platform 2 is connected to the first screw seat 125.

[0049] The second linear motion platform 2 slides with the machine base 5 via the first sliding assembly 11, with the sliding engagement direction being the X-axis. Simultaneously, in the first drive assembly 12, the first motor 126, the first screw 123, the first nut 124, and the first screw seat 125 cooperate to enable the first screw seat 125 to move along the X-axis, thereby driving the second linear motion platform 2 to move along the X-axis, ultimately driving the lathe tool post 3 to move along the X-axis.

[0050] like Figure 2 As shown, the first sliding assembly 11 includes a first guide rail 111 arranged along the X-axis direction and a first slider 112 disposed on the first guide rail 111. The second linear motion platform 2 is disposed on the first slider 112. There are two first sliding assemblies 11, with the two sets of first sliding assemblies 11 located on either side of the first drive assembly 12. Specifically, the two first guide rails 111 are located on either side of the first screw rod 123. The sliding engagement between the first slider 112 and the first guide rail 111 allows the second linear motion platform 2 to be slidably disposed on the machine tool base 5.

[0051] For the second linear motion platform 2, specifically, Figure 2 、 Figure 3 As shown, the second linear motion platform 2 includes an upper slide 23, a lower slide 24, a second sliding assembly 21, and a second drive assembly 22. The lower slide 24 is mounted on the first linear motion platform 1, the second sliding assembly 21 and the second drive assembly 22 are mounted on the lower slide 24, and the upper slide 23 is mounted on the second sliding assembly 21 and connected to the second drive assembly 22. The lathe tool rest 3 is mounted on the upper slide 23.

[0052] The upper slide 23 is connected to the lathe tool post 3, and the lower slide 24 is connected to the first linear motion platform 1, specifically the first slider 112 and the first screw seat 125. Thus, the lower slide 24 receives the motion state transmitted from the first screw seat 125, and the upper slide 23 outputs the motion state to the lathe tool post 3, causing the lathe tool post 3 to move along the X-axis and Y-axis.

[0053] For the second drive assembly 22, as Figure 3As shown, the second drive assembly 22 includes a second bearing seat 221, a second motor seat 222, a second screw rod 223, a second nut 224, a second screw rod seat 225, and a second motor 226. The second screw rod 223 is arranged on the lower slide 24 along the Y-axis direction. The second bearing seat 221 and the second motor seat 222 are disposed on the lower slide 24 and are respectively disposed at the two ends of the second screw rod 223. Specifically, the two ends of the second screw rod 223 are respectively rotatably connected to the second bearing seat 221 and the second motor seat 222. For example, the second screw rod 223 is rotatably connected to the second bearing seat 221 and the second motor seat 222 via bearings. The second nut 224 is disposed on the second screw rod 223, the second screw rod seat 225 is disposed on the second nut 224, and the second motor 226 is disposed on the second motor seat 222. The second motor 226 is connected to the second screw rod 223 to drive the second screw rod 223 to rotate. The upper slide 23 is connected to the second screw rod seat 225.

[0054] The lathe tool post 3 slides with the lower slide plate 24 via the second sliding assembly 21, and the sliding engagement direction is the Y-axis. Simultaneously, in the second drive assembly 22, the second motor 226, the second screw 223, the second nut 224, and the second screw seat 225 cooperate to enable the second screw seat 225 to move along the Y-axis, thereby driving the lathe tool post 3 to move along the Y-axis, and ultimately, enabling the lathe tool post 3 to move along the X-axis and Y-axis directions.

[0055] For the second sliding component 21, Figure 3 As shown, the second sliding assembly 21 includes a second guide rail 211 arranged along the Y-axis and a second slider 212 mounted on the second guide rail 211. The upper slide 23 is mounted on the second slider 212. There are two second sliding assemblies 21, one on each side of the second drive assembly 22. Specifically, the two second guide rails 211 are located on either side of the second lead screw 223. The sliding engagement between the second slider 212 and the second guide rail 211 allows the lathe tool post 3 to slide on the second linear motion platform 2.

[0056] In some embodiments of the automatic feed mechanism of CNC machine tools, such as Figure 1 、 Figure 2 As shown, the automatic feed mechanism of the CNC machine tool also includes a tool preparation mechanism 4 for installing the tool, and the tool preparation mechanism 4 is arranged on the second linear motion platform 2. By providing the tool preparation mechanism 4, the automatic feed mechanism of the CNC machine tool can store multiple tools, which is convenient for tool replacement or switching.

[0057] Specifically, the tool preparation mechanism 4 includes a tool holder plate 41 and several tool preparation holders 42. The tool holder plate 41 is provided with multiple T-slots, and the tool preparation holders 42 are mounted on the T-slots. Each tool preparation holder 42 can hold at least one tool. Thus, the presence of several tool preparation holders 42 can significantly increase the number of tool preparations in the automatic feed mechanism of a CNC machine tool, improving tool switching and providing greater convenience.

[0058] The aforementioned lathe tool rest 3 is specifically arranged on a tool rest fixing plate, and the tool rest fixing plate is arranged on the tool rest plate 41 .

[0059] In some embodiments of the tool holder 42, as Figure 4 As shown, the tool preparation holder 42 includes a tool holder 421, a connecting member 422, an adjustment screw 423, and a lifting frame 424. The tool holder 421 is mounted on the tool holder plate 41 and has a through hole formed therein. Two lifting frames 424 are respectively arranged on either side of the tool holder 421 for escalation. The connecting member 422 extends through the through hole, with both ends of the connecting member 422 protruding from the through hole. The upper end of the adjustment screw 423 is threadedly connected to the lifting frame 424, while the lower end of the adjustment screw 423 is rotatably connected to the protruding portion of the connecting member 422. In this embodiment, when the adjustment screw 423 is rotated, it is restricted by the through hole of the connecting member 422 and can only move in a selective manner, not in a lifting or lowering motion. However, the rotation of the adjustment screw 423 causes the lifting frame 424 to rise or fall, thereby causing the tool on the lifting frame 424 to move upward or downward. This allows for precise adjustment of the height of the tool holder tool, facilitating precise tool replacement or switching.

[0060] The lower end of the adjusting screw 423 is rotatably connected to the connecting member 422. Specifically, both ends of the connecting member 422 are provided with through holes through which the adjusting screw 423 can rotate. The adjusting screw 423 can be moved by the connecting member 422 or other structures. For example, the connecting member 422 may have through holes at both ends, and the lower end of the adjusting screw 423 may have an annular groove. The nominal diameter of the adjusting screw 423 may be larger than the diameter of the through holes, while the diameter of the adjusting screw 423 within the annular groove may be smaller than the diameter of the through hole. In this manner, the adjusting screw 423 can be engaged with the through hole of the connecting member 422 through the annular groove.

[0061] Regarding the liftable connection between the lifting frame 424 and the tool holder 421, specifically, a dovetail groove extending up and down is set on the side of the tool holder 421, and a corresponding dovetail rail is set on the side of the lifting frame 424 close to the tool holder 421. The lifting frame 424 slides with the dovetail groove of the tool holder 421 through the dovetail rail, so that the lifting frame 424 can be raised and lowered to the side of the tool holder 421.

[0062] The above-mentioned embodiments are only preferred embodiments of the present invention and cannot be used to limit the scope of protection of the present invention. Any non-substantial changes and replacements made by technicians in this field on the basis of the present invention fall within the scope of protection required by the present invention.

Claims

1. An automatic feed mechanism for a CNC machine tool, characterized in that: The automatic feed mechanism of the CNC machine tool comprises a first linear motion platform, a second linear motion platform and a lathe tool holder; The first linear motion platform is arranged on the machine tool base and is used to drive the second linear motion platform to move back and forth along the X-axis direction; The second linear motion platform is arranged on the first linear motion platform and is used to drive the lathe tool holder to move back and forth along the Y-axis direction; The lathe tool post is arranged on the second linear motion platform.

2. The automatic feed mechanism for a CNC machine tool according to claim 1, wherein: The first linear motion platform includes a first sliding assembly and a first driving assembly; The second linear motion platform is disposed on the first sliding assembly, and the second linear motion platform is also connected to the first driving assembly.

3. The automatic feed mechanism for a CNC machine tool according to claim 2, wherein: The first drive assembly includes a first bearing seat, a first motor seat, a first screw rod, a first nut, a first screw rod seat and a first motor; The first screw rod is arranged along the X-axis direction, the first bearing seat and the first motor seat are respectively provided at both ends of the first screw rod, the first nut is provided on the first screw rod, the first screw rod seat is provided on the first nut, the first motor is provided on the first motor seat, and the first motor is connected to the first screw rod to drive the first screw rod to rotate; The second linear motion platform is connected to the first screw seat.

4. The automatic feed mechanism for a CNC machine tool according to claim 2, wherein: The first sliding assembly includes a first guide rail arranged along the X-axis direction and a first slider provided on the first guide rail; The second linear motion platform is arranged on the first sliding block.

5. The automatic feed mechanism for a CNC machine tool according to claim 1, wherein: The second linear motion platform includes an upper slide plate, a lower slide plate, a second sliding assembly and a second driving assembly; The lower slide is arranged on the first linear motion platform, the second sliding assembly and the second driving assembly are arranged on the lower slide, and the upper slide is arranged on the second sliding assembly and connected to the second driving assembly; The lathe tool holder is arranged on the upper slide plate.

6. The automatic feed mechanism for a CNC machine tool according to claim 5, characterized in that: The second drive assembly includes a second bearing seat, a second motor seat, a second screw rod, a second nut, a second screw rod seat and a second motor; The second screw is arranged on the lower sliding plate along the Y-axis direction, the second bearing seat and the second motor seat are provided on the lower sliding plate and are respectively provided at both ends of the second screw, the second nut is provided on the second screw, the second screw seat is provided on the second nut, the second motor is provided on the second motor seat, and the second motor is connected to the second screw to drive the second screw to rotate; The upper slide plate is connected to the second screw rod seat.

7. The automatic feed mechanism for a CNC machine tool according to claim 5, characterized in that: The second sliding assembly includes a second guide rail arranged along the Y-axis direction and a second slider provided on the second guide rail; The upper slide plate is arranged on the second slide block.

8. The automatic feed mechanism for a CNC machine tool according to claim 1, wherein: The automatic tool feeding mechanism of the CNC machine tool further includes a tool preparation mechanism for installing a tool, and the tool preparation mechanism is arranged on the second linear motion platform.

9. The automatic feed mechanism for a CNC machine tool according to claim 8, wherein: The tool preparation mechanism includes a tool holder plate and a plurality of tool preparation holders; The tool holder plate is provided with a plurality of T-slots, and the backup tool holder is arranged on the T-slots.

10. The automatic feed mechanism for a CNC machine tool according to claim 9, wherein: The tool stand includes a tool holder, a connector, an adjusting screw and a lifting frame; The two lifting frames are respectively arranged on both sides of the knife holder in a liftable manner. A through hole is provided on the knife holder. The connecting piece is passed through the through hole. Both ends of the connecting piece protrude from the through hole respectively. The upper end of the adjusting screw is threadedly connected to the lifting frame, and the lower end of the adjusting screw is rotatably connected to the protruding part of the connecting piece.

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