A blade positioning mechanism for CNC machine tools

Abstract

This application provides a cutting tool positioning mechanism for CNC machine tools, relating to the field of CNC cutting tools. The cutting tool positioning mechanism for CNC machine tools includes a tool holder, a mounting mechanism, and a fixing mechanism. A fixing mechanism is disposed inside the left side of the tool holder. The fixing mechanism includes a movable cavity and a fixing plate. The movable cavity is located on the right side of the mounting mechanism, and the surface of the fixing plate is slidably connected to the inner wall of the movable cavity. This cutting tool positioning mechanism for CNC machine tools, by setting the fixing mechanism, allows the control frame in the rotating slot to rotate, which in turn rotates the rotating column. The rotating column rotates the outer tube, which in turn rotates the gear. The gear rotates, causing the rack in the sliding groove to move to the left. The leftward movement of the rack causes the fixing plate in the movable cavity to move to the left, fitting and fixing it above the cutting tool. This reduces the positioning time, improves the efficiency of the cutting tool installation process, reduces the time cost of cutting tool positioning, and improves the convenience of cutting tool installation.

Description

Technical Field

[0001] This application relates to the field of CNC cutting tool technology, specifically a cutting tool positioning mechanism for CNC machine tools. Background Technology

[0002] CNC cutting inserts are a general term for indexable turning inserts, and are the mainstream products in modern metal cutting applications. They are mainly used in turning, milling, parting and grooving, and thread turning of metal. The tool holder or tool support on CNC machining equipment usually has pre-set tool positioning holes or slots, and the tool usually has a corresponding positioning pin or positioning slot, which can be used to achieve precise positioning by inserting the tool into the positioning hole or slot.

[0003] Patent CN222725493U discloses a CNC cutting tool positioning mechanism. This mechanism uses a U-shaped block to press a sliding button, which in turn moves a sliding rod. The sliding rod then presses against the pressing rod, causing the sliding column to slide into and be fixed inside the tool holder, thus clamping and securing the tool and simplifying tool disassembly and installation. A stop block secures an L-shaped block to the upper part of the tool holder, facilitating the positioning and fixing of the cutting tool slot and preventing it from falling out due to bolt failure. However, this positioning mechanism requires multiple components to achieve the positioning purpose. In actual use, it still requires sequential control of the operation and installation of different components, resulting in a long positioning time. There is room for improvement in the cutting tool installation process, leading to high time costs. Utility Model Content

[0004] To address the shortcomings of existing technologies, this application provides a cutting tool positioning mechanism for CNC machine tools, which solves the problems mentioned in the background section.

[0005] To achieve the above objectives, this application provides the following technical solution: a cutting tool positioning mechanism for a CNC machine tool, comprising a tool holder, a mounting mechanism for positioning the cutting tool, and a retaining mechanism for ensuring the stability of the positioning mechanism. A retaining mechanism for fixing the cutting tool is provided inside the left side of the tool holder. The retaining mechanism includes a movable cavity and a fixing plate. The movable cavity is located on the right side of the mounting mechanism. The surface of the fixing plate is slidably connected to the inner wall of the movable cavity. The mounting mechanism is located on the top left side of the tool holder, and the retaining mechanism is located above the retaining mechanism.

[0006] By adopting the above technical solution, the tool position can be fixed by moving the fixed plate in the movable cavity to the top of the mounting mechanism, which improves the convenience of tool positioning and reduces the time cost of tool positioning.

[0007] Preferably, the fixing mechanism further includes a gear and a slide groove. The bottom of the gear is rotatably connected to the rear bottom of the inner wall of the movable cavity. A rack is meshed with the front side of the gear. The left side of the rack is connected to the right side of the fixing plate. The slide groove is opened on one side of the bottom of the movable cavity and is slidably connected to the bottom of the rack.

[0008] By adopting the above technical solution, the rotation of the gear can drive the rack that is slidably connected to the slide to move to the left. The leftward movement of the rack drives the left side of the fixing plate to the top of the cutter, thus fixing the cutter in place.

[0009] Preferably, the fixing mechanism further includes an outer tube and a rotating column, the bottom of the outer tube is connected to the top of the gear, the side of the rotating column is slidably connected to the inner wall of the outer tube, and rotating plates are connected to the left and right sides of the rotating column.

[0010] By adopting the above technical solution, the outer tube can be used to provide directional guidance and movement space for the extension and retraction of the rotating column, which facilitates the storage of the control frame and the rotating plate.

[0011] Preferably, the fixing mechanism further includes a control frame and a rotating slot, the bottom of the control frame being connected to the top of the rotating plate, and the rotating slot being formed at the top of the movable cavity.

[0012] By adopting the above technical solution, the rotation of the control frame in the rotating slot can drive the rotating plate to rotate, the rotation of the rotating plate can drive the rotating column to rotate, and the rotation of the rotating column can drive the gear at the bottom of the outer tube to rotate, thus achieving the purpose of rotation transmission to the gear.

[0013] Preferably, the mounting mechanism includes a mounting slot and a cutting tool. The mounting slot is located on the front left side of the top of the tool holder. The mounting slot is connected to the movable cavity, and the bottom of the cutting tool is fitted with the bottom of the mounting slot.

[0014] By adopting the above technical solution, the fitting of the mounting slot with the cutting tool can provide a suitable space for the installation of the cutting tool.

[0015] Preferably, the mounting mechanism further includes a slot and a pin. The slot is located on the right side of the bottom of the mounting groove, the top of the pin is connected to the right side of the bottom of the tool, and the side of the pin is in contact with the inner wall of the slot.

[0016] By adopting the above technical solution, the position of the tool can be restricted by the fit between the retaining post and the retaining groove.

[0017] Preferably, the retaining mechanism includes a placement groove and a rubber ball, the placement groove being formed at the top of the rotating groove, and the side of the rubber ball being connected to one side of the inner wall of the placement groove.

[0018] By adopting the above technical solution, the placement slot can provide space for storing the rotating plate, making it easy to accommodate the placement of the rotating plate at different angles, and the high friction of the rubber ball itself can be used to clamp the rotating plate.

[0019] Preferably, the retaining mechanism further includes a retaining groove, which is formed on one side of the rotating plate, and the inner wall of the retaining groove is in contact with the surface of the rubber ball.

[0020] By adopting the above technical solution, the position of the rotating plate can be fixed by the adhesion between the retaining groove and the surface of the rubber ball, thus ensuring the stability of the rotating plate position.

[0021] This application provides a cutting tool positioning mechanism for CNC machine tools. It has the following advantages:

[0022] 1. This insert positioning mechanism for CNC machine tools, through the setting of a fixing mechanism, causes the control frame in the rotating slot to rotate, which in turn causes the rotating plate to rotate, which in turn causes the rotating column to rotate, which in turn causes the outer tube to rotate, which in turn causes the gear to rotate, which in turn causes the rack in the sliding groove to move to the left, which in turn causes the fixing plate in the movable cavity to move to the left and fit against the tool to fix it, thereby reducing the positioning time, improving the work efficiency of the insert installation process, reducing the time cost of insert positioning, and improving the convenience of insert installation.

[0023] 2. The cutting tool positioning mechanism for CNC machine tools, by setting a retaining mechanism, moves the control frame down, causing the rotating plate to move down until the bottom of the rotating plate is in contact with the bottom of the inner wall of the placement groove. At the same time, the rubber ball is in contact with the inner wall of the retaining groove. The friction of the rubber ball itself prevents the rotating plate from detaching from the placement groove without human intervention, thus ensuring the stability of the fixing mechanism. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0025] Figure 1 This is a schematic diagram of the external structure of this application from a top right view;

[0026] Figure 2 This is an enlarged schematic diagram of Part A of the structure of this application;

[0027] Figure 3 This is a schematic diagram of the left-side top-view cross-sectional structure of this application;

[0028] Figure 4 This is an enlarged schematic diagram of Part B of this application;

[0029] Figure 5 This is a schematic diagram of the left-side top view of the structure of this application;

[0030] Figure 6 This is a schematic diagram of the right-side upward-looking installation mechanism of this application.

[0031] In the diagram: 1. Tool holder; 2. Mounting mechanism; 201. Mounting slot; 202. Slot; 203. Slot; 204. Tool; 3. Fixing mechanism; 301. Movable cavity; 302. Gear; 303. Outer tube; 304. Rotating column; 305. Rotating plate; 306. Control frame; 307. Rack; 308. Slide groove; 309. Fixing plate; 310. Rotating groove; 4. Retention mechanism; 401. Placement slot; 402. Rubber ball; 403. Retention groove. Detailed Implementation

[0032] It should be noted that in the description of the embodiments of this application, the terms "front," "rear," "left," "right," "up," "down," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and 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, and therefore should not be construed as a limitation of this application. The terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two elements. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0033] The present application will be further described in detail below with reference to the accompanying drawings and embodiments.

[0034] Reference Figure 1 , Figure 2 , Figure 3 and Figure 4This application provides a cutting tool positioning mechanism for a CNC machine tool, including a tool holder 1, a mounting mechanism 2 for positioning the cutting tool, and a fixing mechanism 4 for ensuring the stability of the positioning mechanism. A fixing mechanism 3 for fixing the cutting tool is provided inside the left side of the tool holder 1. The fixing mechanism 3 includes a movable cavity 301 and a fixing plate 309. The movable cavity 301 is located on the right side of the mounting mechanism 2. The surface of the fixing plate 309 is slidably connected to the inner wall of the movable cavity 301. A gear 302 is rotatably connected to the rear bottom of the inner wall of the movable cavity 301. A rack 307 is meshed with the front side of the gear 302. The left side of the rack 307 is connected to the right side of the fixing plate 309. A groove 308 is provided on one side of the bottom of the movable cavity 301, and the groove 308 is slidably connected to the bottom of the rack 307. The top of the gear 302 is connected to... There is an outer tube 303, and a rotating column 304 is slidably connected to the inner wall of the outer tube 303. Rotating plates 305 are connected to the left and right sides of the rotating column 304. A control frame 306 is connected to the top of the rotating plate 305. A rotating groove 310 is opened at the top of the movable cavity 301. The mounting mechanism 2 is located on the top left side of the tool holder 1. The fixing mechanism 4 is located above the fixing mechanism 3. The rotation of the control frame 306 in the rotating groove 310 drives the rotating plate 305 to rotate. The rotation of the rotating plate 305 drives the rotating column 304 to rotate. The rotation of the rotating column 304 drives the outer tube 303 to rotate. The rotation of the outer tube 303 drives the gear 302 to rotate. The rotation of the gear 302 drives the rack 307 in the sliding groove 308 to move to the left. The leftward movement of the rack 307 drives the fixing plate 309 in the movable cavity 301 to move to the left and fit against the tool 204 to fix it.

[0035] Reference Figure 5 and Figure 6 In one aspect of this embodiment, the mounting mechanism 2 includes a mounting groove 201 and a cutting tool 204. The mounting groove 201 is located on the front left side of the top of the tool holder 1 and is connected to the movable cavity 301. The bottom of the cutting tool 204 is in contact with the bottom of the mounting groove 201. A slot 202 is provided on the right side of the bottom of the mounting groove 201. A locking post 203 is connected to the right side of the bottom of the cutting tool 204. The side of the locking post 203 is in contact with the inner wall of the slot 202. The locking post 203 is moved to be directly above the slot 202, and the cutting tool 204 is moved down until the bottom of the cutting tool 204 is in contact with the bottom of the mounting groove 201. At the same time, the bottom of the locking post 203 is in contact with the bottom of the slot 202.

[0036] Reference Figure 2 and Figure 4 In one aspect of this embodiment, the retaining mechanism 4 includes a placement groove 401 and a rubber ball 402. The placement groove 401 is formed at the top of the rotating groove 310. The side of the rubber ball 402 is connected to one side of the inner wall of the placement groove 401. A retaining groove 403 is formed on one side of the rotating plate 305. The inner wall of the retaining groove 403 is in contact with the surface of the rubber ball 402. The control frame 306 moves down, causing the rotating plate 305 to move down until the bottom of the rotating plate 305 is in contact with the bottom of the inner wall of the placement groove 401, while the rubber ball 402 is in contact with the inner wall of the retaining groove 403.

[0037] All electrical devices in this plan are powered by an external power source.

[0038] Working principle: In use, move the locking pin 203 directly above the locking slot 202, and lower the cutter 204 until the bottom of the cutter 204 is in contact with the bottom of the mounting slot 201. At the same time, the bottom of the locking pin 203 is in contact with the bottom of the locking slot 202. The control frame 306 in the rotating slot 310 rotates, causing the rotating plate 305 to rotate. The rotation of the rotating plate 305 causes the rotating pin 304 to rotate. The rotation of the rotating pin 304 causes the outer tube 303 to rotate. The rotation of the outer tube 303 causes the gear 302 to rotate. The rotation of gear 302 causes rack 307 in slide groove 308 to move to the left. The leftward movement of rack 307 causes fixed plate 309 in movable cavity 301 to move to the left and fit against cutter 204, fixing it in place. Control frame 306 moves down, causing rotating plate 305 to move down. The downward movement of rotating plate 305 causes rotating column 304 in outer tube 303 to move down until the bottom of rotating plate 305 fits against the bottom of inner wall of placement groove 401, so that rubber ball 402 fits against inner wall of retention groove 403.

[0039] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0040] Although embodiments of this application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A tool positioning mechanism for a numerically controlled machine tool, comprising a tool holder (1), a mounting mechanism (2) for positioning a tool, and a retaining mechanism (4) for ensuring the stability of the positioning mechanism, characterized in that: The tool holder (1) has a fixing mechanism (3) for fixing the blade inside on the left side. The fixing mechanism (3) includes a movable cavity (301) and a fixing plate (309). The movable cavity (301) is opened on the right side of the mounting mechanism (2). The surface of the fixing plate (309) is slidably connected to the inner wall of the movable cavity (301). The mounting mechanism (2) is located on the top left side of the tool holder (1). The retaining mechanism (4) is located above the fixing mechanism (3).

2. A tool positioning mechanism for a numerically controlled machine tool according to claim 1, characterised in that: The fixing mechanism (3) also includes a gear (302) and a slide (308). The bottom of the gear (302) is rotatably connected to the rear side of the bottom of the inner wall of the movable cavity (301). The front side of the gear (302) is meshed with a rack (307). The left side of the rack (307) is connected to the right side of the fixing plate (309). The slide (308) is opened on one side of the bottom of the movable cavity (301). The slide (308) is slidably connected to the bottom of the rack (307).

3. A tool positioning mechanism for a numerically controlled machine tool according to claim 2, characterised in that: The fixing mechanism (3) also includes an outer tube (303) and a rotating column (304). The bottom of the outer tube (303) is connected to the top of the gear (302), and the side of the rotating column (304) is slidably connected to the inner wall of the outer tube (303). Rotating plates (305) are connected to the left and right sides of the rotating column (304).

4. A tool positioning mechanism for a numerically controlled machine tool according to claim 3, characterised in that: The fixing mechanism (3) also includes a control frame (306) and a rotating groove (310). The bottom of the control frame (306) is connected to the top of the rotating plate (305), and the rotating groove (310) is opened on the top of the movable cavity (301).

5. A tool positioning mechanism for a numerically controlled machine tool according to claim 4, characterised in that: The mounting mechanism (2) includes a mounting groove (201) and a cutting tool (204). The mounting groove (201) is located on the front left side of the top of the tool holder (1). The mounting groove (201) is connected to the movable cavity (301). The bottom of the cutting tool (204) is in contact with the bottom of the mounting groove (201).

6. A tool positioning mechanism for a numerically controlled machine tool according to claim 5, characterised in that: The mounting mechanism (2) further includes a slot (202) and a pin (203). The slot (202) is located on the bottom right side of the mounting groove (201). The top of the pin (203) is connected to the bottom right side of the tool (204). The side of the pin (203) is in contact with the inner wall of the slot (202).

7. A blade positioning mechanism for a CNC machine tool according to claim 4, characterized in that: The retaining mechanism (4) includes a placement groove (401) and a rubber ball (402). The placement groove (401) is located at the top of the rotating groove (310), and the side of the rubber ball (402) is connected to one side of the inner wall of the placement groove (401).

8. A blade positioning mechanism for a CNC machine tool according to claim 4, characterized in that: The retaining mechanism (4) also includes a retaining groove (403), which is opened on one side of the rotating plate (305), and the inner wall of the retaining groove (403) is in contact with the surface of the rubber ball (402).

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