Knife rest structure of numerical control machine tool

Abstract

The utility model relates to the technical field of lathe tool rests, in particular to a tool rest structure of a numerical control machine tool, which comprises a tool rest main body and a bolt substrate, a crank is fixedly connected to the center of the upper end of the tool rest main body, and limiting components are mounted in four sides of the lower part of the tool rest main body. Through cooperation of the grip, the notches, the tool rest body, the sliding rods and the springs, when the tool rest is used, the grip is manually held to be pulled outwards, a turning tool needing to be installed is placed in the corresponding notches, then the grip is loosened, under the action of the springs, the sliding rods drive the turning tool to move inwards to reset, and when the turning tool is in the limiting position, the tool rest body is fixed. The two sides of the turning tool are blocked or clamped by the tool rest body and the notch respectively, the situation that the position of the turning tool is prone to being changed due to vibration or accidental touch and the like when the turning tool is installed is effectively avoided, and then the turning tool is not tightly attached to the frame body and keeps parallel any more; and the problem that the machining effect is poor due to the fact that machining of the turning tool deviates is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of lathe tool rests, in particular to a tool rest structure of a numerically controlled machine tool. Background Art

[0002] A CNC machine tool, whose control system can logically process programs specified by control codes or other symbolic instructions, represented by coded numbers, and input into the CNC device through information carriers. The CNC machine tool tools need to be installed and supported by a tool holder during use. For example, a tool holder structure for a CNC machine tool with application number 202121586291.9 includes a positioning groove, a fixing bolt, a tool holder body, a base plate and a guide mechanism. The utility model arranges a guide mechanism on the inner side of the base plate.

[0003] Although the comparative documents can achieve the beneficial effect of making the tool more stable during use, in traditional technologies or comparative documents, the installation process of the turning tool is mostly done by manually pressing the turning tool against the outer wall of the tool holder body, and then loosening and turning the locking bolt. However, during the process of loosening the turning tool position, the turning tool is easily moved due to vibration or accidental collision, and the turning tool is no longer parallel to the frame body, resulting in a certain angle after the turning tool is installed, causing the turning tool to be offset and resulting in poor processing effect. Utility Model Content

[0004] The utility model aims to solve the problem that the position of the turning tool is easily changed due to vibration or accidental collision during installation, so that the turning tool is no longer close to the frame body and remains parallel, and there is a certain angle after the turning tool is installed, which makes the turning tool offset and causes poor processing effect. A tool holder structure for a CNC machine tool is proposed to solve the problem that the turning tool is easily changed due to vibration or accidental collision during installation, so that the turning tool is no longer close to the frame body and remains parallel, and there is a certain angle after the turning tool is installed, which makes the turning tool offset and causes poor processing effect.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A tool holder structure of a numerically controlled machine tool is designed, comprising a tool holder body and a bolt base plate, wherein a crank is fixedly connected to the center of the upper end of the tool holder body, and limit position components are installed inside the four sides of the lower part of the tool holder body.

[0007] Preferably, the limiting assembly includes a handle, a notch, a rubber sleeve, a slide rod and a spring;

[0008] The plurality of slide rods are slidably connected on both sides of the centers of the four sides of the lower end of the tool holder body, a notch is processed on the upper outer part of the outer wall of the slide rod, the centers of the outer ends of the slide rods on the same side are fixedly connected through a handle, a rubber sleeve is sleeved on the outer wall of the handle, a spring is provided at the inner end of the slide rod, and the ends of the two sides of the spring are fixedly connected to the slide rod and the tool holder body respectively.

[0009] Preferably, the lower part of the inner wall of the notch is at the same height as the lower outer edge of the tool holder body.

[0010] Preferably, the four sides of the bolt base plate are all threadedly connected with a plurality of locking bolts.

[0011] Preferably, a bolt base plate is fixedly connected to the upper portion of the outer wall of the tool holder body.

[0012] The utility model provides a tool holder structure for a numerically controlled machine tool, which has the following beneficial effects:

[0013] Through the cooperation between the handle, the notch, the tool holder body, the slide bar and the spring, the handle is manually held and pulled outward during use to place the turning tool to be installed inside the corresponding notch, and then the handle is released. Under the action of the spring, the slide bar drives the turning tool to move inward and reset, and when in the extreme position, the two sides of the turning tool are blocked or clamped by the tool holder body and the notch respectively, which effectively avoids the position change of the turning tool due to vibration or accidental collision during installation, and then the turning tool no longer stays parallel to the frame body, and there is a certain angle after the turning tool is installed, which causes the turning tool to be offset and causes poor processing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the appearance structure of the utility model;

[0015] Figure 2 It is a left-side structural schematic diagram of the utility model;

[0016] Figure 3 For this utility model Figure 2 Schematic diagram of the structure at AA in the middle.

[0017] In the figure: 1. tool holder body, 2. bolt base plate, 3. limit assembly, 3a1. handle, 3a2. notch, 3a3. rubber sleeve, 3a4. slide rod, 3a5. spring, 4. crank, 5. locking bolt. DETAILED DESCRIPTION

[0018] The utility model is further described below in conjunction with the accompanying drawings:

[0019] Embodiment 1:

[0020] See attached Figure 1-3 In the present embodiment, a tool holder structure of a numerically controlled machine tool comprises a tool holder body 1 and a bolt base plate 2, a crank 4 is fixedly connected to the center of the upper end of the tool holder body 1, a limiting assembly 3 is installed inside the four lower sides of the tool holder body 1, the lower part of the inner wall of the notch 3a2 is at the same height as the lower outer edge of the tool holder body 1, a plurality of locking bolts 5 are threadedly connected to the four sides of the bolt base plate 2, the locking bolts 5 are used to hold the position of the turning tool, and the bolt base plate 2 is fixedly connected to the upper part of the outer wall of the tool holder body 1.

[0021] See attached Figure 1-3 : In this embodiment, the limiting assembly 3 includes a handle 3a1, a notch 3a2, a rubber sleeve 3a3, a slide rod 3a4 and a spring 3a5;

[0022] A plurality of slide bars 3a4 are slidably connected to the center sides of the four sides of the lower end of the tool holder body 1, and a notch 3a2 is processed on the upper outer side of the outer wall of the slide bar 3a4. The notch 3a2 is used to place the turning tool. The outer end centers of the slide bars 3a4 on the same side are fixedly connected through the handle 3a1. The outer wall of the handle 3a1 is sleeved with a rubber sleeve 3a3. The elastic coefficient of the spring 3a5 can be determined according to the specific usage. The inner end of the slide bar 3a4 is provided with a spring 3a5. The ends of the spring 3a5 on both sides are fixedly connected to the slide bar 3a4 and the tool holder body 1 respectively.

[0023] Through the cooperation among the handle 3a1, the notch 3a2, the tool holder body 1, the slide bar 3a2 and the spring 3a5, when in use, the handle 3a1 is manually grasped and pulled outward to place the turning tool to be installed inside the corresponding notch 3a2, and then the handle 3a1 is released. Under the action of the spring 3a5, the slide bar 3a4 drives the turning tool to move inward and reset, and when in the extreme position, the two sides of the turning tool are respectively blocked or clamped by the tool holder body 1 and the notch 3a2, which effectively avoids the position change of the turning tool due to vibration or accidental collision during installation, and then the turning tool is no longer close to the frame body and remains parallel. There is a certain angle after the turning tool is installed, which makes the processing of the turning tool offset and causes poor processing effect.

[0024] Working principle:

[0025] When the tool holder structure of this CNC machine tool is needed, first, the user can assemble the overall structure as shown in the figure. After the assembly is completed, the tool holder structure is placed on the corresponding lathe part. When in use, the user can first manually hold the handle 3a1 and pull it outward, so that the handle 3a1 can drive the slide bar 3a4 to slide outward, during which the spring 3a5 is stretched, and then the turning tool to be installed is placed inside the corresponding notch 3a2, and then the handle 3a1 is released. Under the action of the spring 3a5, the slide bar 3a4 drives the turning tool to move inward and reset, and when it is in the extreme position, the two sides of the turning tool are respectively blocked or clamped by the tool holder body 1 and the notch 3a2, thereby ensuring that the turning tool is placed parallel to the outer wall of the tool holder body 1. Compared with traditional technologies or comparative documents, the installation process of the turning tool is mostly done by manually pressing the turning tool against the outer wall of the tool holder body 1, and then loosening and twisting it. The locking bolt 5 is tightened, and the position of the turning tool is easily changed due to vibration or accidental collision during the process of loosening the turning tool position, so that the turning tool is no longer closely attached to the frame body and maintained parallel, and a certain angle exists after the turning tool is installed, which causes the processing of the turning tool to be offset, resulting in poor processing effect. Therefore, the present case designs a limit assembly 3, places the turning tool to be installed in the corresponding notch 3a2, and then releases the grip 3a1. Under the action of the spring 3a5, the slide bar 3a4 drives the turning tool to move inward and reset, and at the extreme position, the two sides of the turning tool are respectively blocked or clamped by the tool holder body 1 and the notch 3a2, which effectively avoids the position change of the turning tool due to vibration or accidental collision during installation, and the turning tool is no longer closely attached to the frame body and maintained parallel, and a certain angle exists after the turning tool is installed, which causes the processing of the turning tool to be offset, resulting in poor processing effect.

[0026] Although the present invention has been shown and described with reference to the preferred embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein within the scope of the claims.

Claims

1. A tool rest structure for a numerically controlled machine tool, comprising a tool rest body (1) and a bolt base plate (2), characterized in that: A crank (4) is fixedly connected to the center of the upper end of the tool holder body (1), and a limit assembly (3) is installed inside the four sides of the lower part of the tool holder body (1), and the limit assembly (3) includes a handle (3a1), a notch (3a2), a rubber sleeve (3a3), a slide rod (3a4) and a spring (3a5); The plurality of slide bars (3a4) are slidably connected to the center sides of the four sides of the lower end of the tool holder body (1); a notch (3a2) is processed on the upper outer part of the outer wall of the slide bar (3a4); the outer end centers of the slide bars (3a4) on the same side are fixedly connected via a handle (3a1); the outer wall of the handle (3a1) is sleeved with a rubber sleeve (3a3); a spring (3a5) is provided at the inner end of the slide bar (3a4); and the ends of the spring (3a5) are fixedly connected to the slide bar (3a4) and the tool holder body (1) respectively.

2. The tool rest structure of a CNC machine tool according to claim 1, characterized in that: The lower part of the inner wall of the notch (3a2) is at the same height as the lower outer edge of the tool holder body (1).

3. The tool rest structure of a CNC machine tool according to claim 2, characterized in that: The four sides of the bolt base plate (2) are all threadedly connected with a plurality of locking bolts (5).

4. The tool rest structure of a CNC machine tool according to claim 3, characterized in that: A bolt base plate (2) is fixedly connected to the upper portion of the outer wall of the tool holder body (1).

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