Knife rest anti-winding mechanism of numerical control machine tool

Abstract

The utility model discloses a knife rest anti-winding mechanism of a numerical control machine tool, which comprises a knife rest, two T-shaped clamping grooves are arranged on the knife rest at intervals, a knife holder assembly is inserted into one T-shaped clamping groove, and a knife rest anti-winding mechanism capable of being inserted into the knife holder assembly is inserted into the other T-shaped clamping groove. The anti-winding assembly comprises an air cylinder, a push frame and one or more push strips, the air cylinder is fixed to an air cylinder support, a first T-shaped sliding block is arranged at the bottom of the air cylinder support and inserted into the T-shaped clamping groove, a piston rod of the air cylinder is connected with a ball head rod, and the ball head rod is connected with the push frame. The ball head portion of the ball head rod is hinged to a connecting base, the connecting base is connected to the side edge of a pushing frame in a clamped mode, one or more pushing strips are arranged on the other side of the pushing frame at intervals, all the pushing strips are arranged on the same plane, the other ends of all the pushing strips are movably connected into the tool apron assembly in an inserted mode, and the pushing strips are used for pushing away chippings wound on the tool after stretching out and drawing back. The structure improves the working efficiency.

Description

Technical Field

[0001] The utility model belongs to the relevant technical field of numerical control machine tools for processing hexagon socket nuts, in particular to a tool rest anti-winding mechanism of a numerical control machine tool. Background Art

[0002] Hexagon socket nuts, also known as hexagon nuts, hexagonal blocks, and hexagon socket bolts, are nuts with six angular protrusions, which play an important role in mechanical assembly and fastening. In the process of processing hexagon socket nuts, generally according to the needs of the product, it is necessary to mill grooves on the side and drill internal thread holes, so cutting bits, internal thread processing bits and other tools are used. For the convenience of operation, the cutting bits and internal thread processing bits are generally installed on a tool holder at the same time, and then the tool holder is driven back and forth by a cylinder to switch the tools.

[0003] At present, the commonly used tool holder structures of various lathes are relatively simple. For example, patent No. 200920120353.X is disclosed, and the patent name is a device for installing and adjusting the tool position on a machine tool. The others include a tool holder seat, a T-nut, a U-shaped clamping block, a tool holder, a supporting screw block, and hexagon socket head screws connecting them; the T-shaped base plate of the tool holder is used to be fixed on the lathe support plate, and the tool fastening screw is used to fix the tool; the positioning screw is positioned forward, backward, left and right through the T-nut; the adjusting screw is supported on the supporting screw block to fine-tune the tool holder up and down, and the locking screw locks the tool holder in position through the U-shaped clamping block. This structure can achieve that after the knife is installed, the knife can be adjusted and positioned up and down, front and back, left and right, which greatly shortens the time for installing and adjusting the knife. Generally, in order to achieve the same equipment to realize cutting and threaded hole drilling operations, different tools are installed on the tool holder at intervals (the tools are on the same plane). However, during the use of this structure, it was found that the tool needs to perform reciprocating motion for cutting and threaded hole drilling operations. During such operation, it was found that the cut waste is easily entangled between the tools (wound around the tool in the form of wire coils), resulting in the need to stop the machine later and manually clean it, resulting in reduced work efficiency. Therefore, improvement is needed. Utility Model Content

[0004] The utility model aims to provide a tool holder anti-winding mechanism for a CNC machine tool, which solves the problem that debris is easily entangled between the tools of the existing tool holder, and manual cleaning is required after the machine is stopped, resulting in reduced work efficiency.

[0005] In order to solve the above technical problems, the utility model is realized by the following technical solutions:

[0006] The utility model discloses a tool rest anti-winding mechanism for a numerically controlled machine tool, comprising a tool rest for fixing on a lathe support plate, wherein two or more T-shaped slots are arranged on the tool rest at intervals and rise along the length direction of the tool rest, a tool holder assembly for installing a tool is inserted into one of the T-shaped slots, and an anti-winding assembly that can be inserted into the tool holder assembly and directly prevent the tool installed on the tool holder assembly from winding with debris is inserted into the other T-shaped slot. The anti-winding assembly comprises a cylinder, a push frame and more than one push strips. The cylinder is fixed on a cylinder support, a T-shaped slider is provided at the bottom of the cylinder support, the T-shaped slider is inserted in the T-shaped slot, a ball head rod is connected to the piston rod of the cylinder, the ball head of the ball head rod is hinged on a connecting seat, the connecting seat is clamped on the side of the push frame, and more than one push strips are arranged at intervals on the other side of the push frame, all the push strips are on the same plane, and the other ends of all the push strips are movably inserted in the tool seat assembly, and the push strips are used to push away debris wrapped around the tool after being extended and retracted.

[0007] Preferably, in order to facilitate the disassembly and replacement of cutting tools and to be able to process different cutting tools at the same time, the tool holder assembly includes an upper tool holder and a lower tool holder that cooperate with each other, and one or more lower retaining grooves are arranged at intervals on the lower tool holder, and an upper retaining groove that cooperates with the lower retaining groove is arranged on the upper tool holder, and the upper retaining groove cooperates with the lower retaining groove to form a tool head mounting hole for clamping the corresponding tool, and the upper tool holder and the lower tool holder are locked and fixed by one or more locking bolts, and an operating handwheel is arranged at the head of each locking bolt, and one of the push strips is inserted between two adjacent tool head mounting holes.

[0008] Preferably, in order to facilitate installation, an L-shaped connecting block is provided at one end of the push bar, and all L-shaped connecting blocks are threadedly connected to the push frame by fixing screws.

[0009] Preferably, in order to facilitate clamping the tool, an inverted U-shaped silicone strip is provided in the upper clamping groove, and a silicone pressure strip is provided on the inner side of the U-shaped silicone strip.

[0010] Preferably, in order to facilitate disassembly, a T-shaped sliding block 2 is provided at the bottom of the lower knife seat and is slidably connected to the T-shaped slot.

[0011] Preferably, in order to facilitate the fixing of the tool, a U-shaped magnetic ring is provided in the lower clamping groove.

[0012] Preferably, in order to facilitate the installation of the tool holder on the lathe support plate at a later time, a mounting through hole is provided around the tool holder.

[0013] The utility model has the following beneficial effects: the structural setting can push away the debris wrapped around the tool to prevent it from being wrapped around the tool and affecting the final working effect of the tool, and there is no need for manual cleaning on the tool in the later stage, and no need to stop the machine for operation, which further improves the working effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a structural schematic diagram of a tool holder anti-winding mechanism of a CNC machine tool in Example 1;

[0015] Figure 2 This is a schematic structural diagram of a tool holder anti-winding mechanism of a CNC machine tool in Example 1 when no tool holder is installed;

[0016] Figure 3 It is a schematic diagram of the exploded structure of the upper knife seat and the lower knife seat in Example 1;

[0017] Figure 4 It is a schematic diagram of the structure of the locking bolt in Example 1;

[0018] Figure 5 for Figure 2 A in the enlarged view;

[0019] Figure 6 It is a schematic diagram of the side structure of the upper knife seat and the lower knife seat when they are combined in Example 1;

[0020] Figure 7 This is a front structural schematic diagram of the upper tool holder and the lower tool holder when combined in Example 2.

[0021] Reference numerals:

[0022] Tool holder 1, mounting through hole 101, T-shaped slot 2, tool holder assembly 3, anti-winding assembly 4, cylinder 401, push frame 402, push strip 403, T-shaped slider 1 404, ball head rod 405, connecting seat 406, cylinder support 407, upper tool holder 5, upper clamping groove 501, lower tool holder 6, lower clamping groove 601, locking bolt 7, operating hand wheel 8, tool head mounting hole 9, L-shaped connecting block 10, fixing screw 11, U-shaped silicone strip 12, silicone pressure strip 120, T-shaped slider 2 13, U-shaped magnetic ring 14. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solution and advantages of the embodiments of the utility model clearer, the technical solution in the embodiments of the utility model will be clearly and completely described below in combination with the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] Example 1

[0025] See also Figure 1-6 As shown, the present embodiment discloses a tool rest anti-winding mechanism for a numerically controlled machine tool, comprising a tool rest 1 for fixing on a lathe pallet, on which the tool rest 1 is provided with two or more T-shaped slots 2 which are arranged at intervals and rise along the length direction of the tool rest 1, a tool holder assembly 3 for installing a tool is inserted into one of the T-shaped slots 2, and an anti-winding assembly 4 which can be inserted into the tool holder assembly 3 and directly prevent the tool installed on the tool holder assembly 3 from being wound with debris is inserted into the other T-shaped slot 2, the anti-winding assembly 4 comprises a cylinder 401, a push frame 402 and one or more push strips 403, the cylinder 401 is fixed to a support of the cylinder 401 On 407, a T-shaped slider 404 is provided at the bottom of the cylinder 401 support 407, and the T-shaped slider 404 is inserted in the T-shaped slot 2. A ball head rod 405 is connected to the piston rod of the cylinder 401, and the ball head of the ball head rod 405 is hinged on a connecting seat 406. The connecting seat 406 is clamped on the side of the push rack 402, and more than one push strip 403 is arranged at intervals on the other side of the push rack 402. All push strips 403 are on the same plane, and the other ends of all push strips 403 are movably inserted in the tool holder assembly 3, and the push strips 403 are used to push away the debris wrapped around the tool after being extended and retracted.

[0026] Preferably, in order to facilitate the disassembly and replacement of the tool and to realize the processing of different tools at the same time, the tool holder assembly 3 includes an upper tool holder 5 and a lower tool holder 6 that cooperate with each other, and one or more lower clamping grooves 601 are arranged at intervals on the lower tool holder 6, and an upper clamping groove 501 that cooperates with the lower clamping groove 601 is arranged on the upper tool holder 5, and the upper clamping groove 501 cooperates with the lower clamping groove 601 to form a tool head mounting hole 9 for clamping the corresponding tool, and one or more locking bolts are used between the upper tool holder 5 and the lower tool holder 6. 7 (the rod of the locking bolt 7 has an external threaded portion, and the lower tool seat 6 is provided with internal and external threaded portions that cooperate with the external threaded portion) for locking and fixing. An operating handwheel 8 is provided at the head of each locking bolt 7, and a push strip 403 is inserted between two adjacent tool head mounting holes 9. When the above structure installs the tool, the four upper locking bolts 7 are unscrewed, and then the tool is inserted from the side into the lower clamping groove 601, and then the locking bolt 7 is tightened to clamp the tool in the tool head mounting hole 9, which is also convenient for disassembling and replacing the tool in the later stage.

[0027] Preferably, in order to facilitate installation, an L-shaped connecting block 10 is provided at one end of the push bar 403, and all L-shaped connecting blocks 10 are threadedly connected to the push frame 402 through fixing screws 11. In this embodiment, an L-shaped connecting block 10 is provided at one end of the push bar 403, and the L-shaped connecting block 10 is fixed to the push frame 402 through screws, which finally facilitates installation.

[0028] Preferably, in order to facilitate disassembly, a T-shaped slider 13 slidably connected to the T-shaped slot 2 is provided at the bottom of the lower knife seat 6. By providing the T-shaped slider 13 at the bottom of the lower knife seat 6, the lower knife seat 6 can be conveniently inserted into the T-shaped slot 2.

[0029] Preferably, in order to facilitate the installation of the tool holder 1 on the lathe support plate at a later time, a mounting through hole 101 is provided around the tool holder 1. By providing the mounting through hole 101 and cooperating with screws at a later time, the device can be directly fixed on the lathe support plate.

[0030] The present structure inserts a retractable push bar 403 on the tool holder 1. When working, the tools are first installed on each tool head mounting hole 9. In the present embodiment, there are a total of 4 tool head mounting holes 9, and the sizes of the holes are different for installing different tools, such as cutting tools, reamer tools, internal thread processing tools, etc. When there are debris entangled between the tools, or when there are debris entangled on the sides of the tools, the cylinder 401 can be driven to work, the piston rod is extended, and then the push frame 402 is pushed forward, and finally the push bar 403 is driven forward to push the debris entangled between the tools off the tools. Therefore, the debris entangled on the tools can be pushed off by the present structure to prevent it from being entangled around the tools and affecting the final working effect of the tools. In addition, there is no need to manually clean the tools in the later stage, and there is no need to stop the machine, which further improves work efficiency.

[0031] Embodiment 2:

[0032] like Figure 7As shown, the general structure of the tool holder anti-winding mechanism of a CNC machine tool disclosed in this embodiment is the same as that of Example 1, except that, as a preference, in order to facilitate clamping the tool, an inverted U-shaped silicone strip 12 is provided in the upper clamping groove 501, and a silicone pressure strip 120 is provided on the inner side of the U-shaped silicone strip 12, and in order to facilitate fixing the tool, a U-shaped magnetic ring 14 is provided in the lower clamping groove 601. In this embodiment, a U-shaped magnetic ring 14 is provided in the lower clamping groove 601. When installing the tool, the four upper locking bolts 7 are unscrewed, and then the tool is inserted into the lower clamping groove 601 from the side, the U-shaped magnetic ring 14 is used to suck the tool, and then the locking bolt 7 is tightened, and the upper U-shaped silicone strip 12 and the silicone pressure strip 120 are used to cooperate to clamp the tool in the tool head mounting hole 9, and the additional U-shaped silicone strip 12 and the silicone pressure strip 120 can increase the friction between the tool and the tool, thereby ultimately improving the clamping effect on the tool.

[0033] The above are only preferred embodiments of the present invention and do not limit the present invention. Any modification to the technical solutions recorded in the aforementioned embodiments and any equivalent replacement of some of the technical features therein, any modification, equivalent replacement, and improvement made are all within the protection scope of the present invention.

Claims

1. A tool rest anti-winding mechanism for a numerically controlled machine tool, comprising a tool rest (1) for fixing on a lathe support plate, wherein two or more T-shaped slots (2) are arranged on the tool rest (1) at intervals and ascend along the length direction of the tool rest (1), and a tool holder assembly (3) for mounting a tool is inserted into one of the T-shaped slots (2), characterized in that: An anti-winding component (4) is inserted into the other T-shaped slot (2) and can be inserted into the tool holder assembly (3) to directly prevent the tool installed on the tool holder assembly (3) from being wound with debris. The anti-winding component (4) includes a cylinder (401), a push frame (402) and one or more push strips (403). The cylinder (401) is fixed on a cylinder support (407). A T-shaped slider (404) is provided at the bottom of the cylinder support (407). The T-shaped slider (404) is inserted into the T-shaped slot (2). A ball head rod (405) is connected to the piston rod of the air cylinder (401), and the ball head of the ball head rod (405) is hinged on a connecting seat (406). The connecting seat (406) is clamped on the side of the push frame (402). One or more push bars (403) are arranged at intervals on the other side of the push frame (402). All the push bars (403) are on the same plane, and the other ends of all the push bars (403) are movably inserted into the tool holder assembly (3). After the push bars (403) are extended and retracted, they are used to push away debris wrapped around the tool.

2. The tool rest anti-winding mechanism of a CNC machine tool according to claim 1, characterized in that: The tool holder assembly (3) comprises an upper tool holder (5) and a lower tool holder (6) which cooperate with each other, and one or more lower retaining grooves (601) are arranged at intervals on the lower tool holder (6), and an upper retaining groove (501) which cooperates with the lower retaining groove (601) is arranged on the upper tool holder (5), and the upper retaining groove (501) cooperates with the lower retaining groove (601) to form a tool head mounting hole (9) for clamping a corresponding tool, and the upper tool holder (5) and the lower tool holder (6) are locked and fixed by one or more locking bolts (7), and an operating hand wheel (8) is arranged at the head of each locking bolt (7), and a push strip (403) is inserted between two adjacent tool head mounting holes (9).

3. The tool rest anti-winding mechanism of a CNC machine tool according to claim 2, characterized in that: An L-shaped connection block (10) is provided at one end of the push bar (403), and all L-shaped connection blocks (10) are threadedly connected to the push frame (402) via fixing screws (11).

4. The tool rest anti-winding mechanism of a CNC machine tool according to claim 2 or 3, characterized in that: An inverted U-shaped silicone strip (12) is arranged in the upper locking groove (501), and a silicone pressure strip (120) is arranged inside the U-shaped silicone strip (12).

5. The tool rest anti-winding mechanism for a CNC machine tool according to claim 2, characterized in that: A T-shaped sliding block 2 (13) slidably connected in the T-shaped slot (2) is arranged at the bottom of the lower knife seat (6).

6. The tool rest anti-winding mechanism of a CNC machine tool according to claim 4, characterized in that: A U-shaped magnetic ring (14) is arranged in the lower locking groove (601).

7. The tool rest anti-winding mechanism for a CNC machine tool according to claim 1, characterized in that: A mounting through hole (101) is arranged around the tool holder (1).

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