Ejector for clamping parts of numerical control machine tool

Abstract

The utility model discloses an ejector for clamping parts of a numerical control machine tool, which comprises a fixed seat, a fixed rod, a sliding rod, an elastic piece and a pressing block, the fixed seat is arranged on a tool apron, the fixed rod is fixed on the fixed seat, the sliding rod is connected in the fixed rod in a sliding mode, the elastic piece is connected with the sliding rod and the fixed rod, and the pressing block is arranged on the fixed rod. The pressing block is fixed to one end of the fixing rod. The utility model provides an ejector for clamping a part of a numerical control machine tool, which can adjust the clamping precision of the part after the part is clamped and ensure the perpendicularity of the positioning surface of the part and the axis of a chuck.

Description

Technical Field

[0001] The utility model belongs to the technical field of tooling, and in particular relates to a material ejector used for clamping parts of numerically controlled machine tools. Background Art

[0002] During lathe processing, it is a common operation to clamp the outer diameter of the part with a chuck and then turn the inner hole of the part. However, some smaller parts will be skewed during clamping, which will affect the accuracy of the part after turning. Manually adjusting the clamping of the part is time-consuming and labor-intensive, and it is difficult to ensure the clamping accuracy of the part.

[0003] In the prior art, such as the one disclosed in Chinese patent CN 214769037 U, a material ejection device for automatically straightening a part during secondary clamping is used. The push rod applies force to the part in the direction of the chuck jaws through axial feeding. After the force is applied, the positioning surface of the part is completely aligned with the reference surface of the chuck jaws. However, it is difficult to ensure the verticality of the positioning surface of the part and the axis of the chuck during clamping in the prior art. Utility Model Content

[0004] The utility model aims to provide a material ejector for clamping parts of numerically controlled machine tools, so as to solve the problem in the prior art that it is difficult to ensure the verticality between the positioning surface of the part and the axis of the chuck during clamping.

[0005] To this end, the utility model provides a ejector for clamping parts of CNC machine tools, comprising: a fixed seat, a fixed rod, a sliding rod, an elastic member and a pressure block, the fixed rod is fixed on the fixed seat, the sliding rod is slidably connected in the fixed rod, the elastic member connects the sliding rod and the fixed rod, and the pressure block is fixed at one end of the fixed rod.

[0006] Preferably, the fixing rod is arranged horizontally.

[0007] Preferably, the midline of the sliding rod is in the same straight line as the midline of the fixed rod, so as to ensure that the sliding rod always remains in line with the midline of the fixed rod when sliding in the fixed rod.

[0008] Preferably, the fixing rod includes a first inner cavity and a second inner cavity, one end of the first inner cavity is connected to the second inner cavity, the midlines of the first inner cavity and the second inner cavity are in the same straight line, and the other end of the second inner cavity is provided with a plug.

[0009] Preferably, the diameter of the first inner cavity is smaller than that of the second inner cavity.

[0010] Preferably, the diameter of the sliding rod and the diameter of the first inner cavity are clearance-matched.

[0011] Preferably, a slider is provided at one end of the sliding rod, the diameter of the slider is the same as the diameter of the second inner cavity, and the slider is slidably connected in the second inner cavity. The first inner cavity is used for sliding of the sliding rod, and the second inner cavity is used for sliding of the slider. The diameter of the first inner cavity is smaller than that of the second inner cavity to prevent the slider from sliding out of the second inner cavity. The diameter of the sliding rod and the diameter of the first inner cavity are clearance-matched to prevent the sliding rod from shaking and causing deviation in the first inner cavity.

[0012] Preferably, two ends of the elastic body are connected to the slider and the plug respectively. The elastic body is used to bounce the slider when the external force is lost.

[0013] Preferably, the verticality between the pressing block and the sliding rod is less than 0.03. By ensuring the verticality between the pressing block and the sliding rod, the verticality between the positioning surface of the part and the axis of the chuck after the part is clamped is ensured.

[0014] Preferably, a buffer pad is provided on the end surface of the pressing block, which can prevent the pressure of the pressing block from being too high and scratching the surface of the part.

[0015] Beneficial effects:

[0016] 1. The utility model provides a material ejector for clamping parts of CNC machine tools, which can adjust the clamping accuracy of the parts after the parts are clamped to ensure the verticality between the positioning surface of the parts and the axis of the chuck.

[0017] 2. In the prior art, it is only ensured that the positioning surface of the part is completely in contact with the reference surface of the chuck jaws after being subjected to force, but it is difficult to ensure the verticality of the positioning surface of the part and the axis of the chuck. The utility model ensures that the sliding rod slides linearly and the verticality of the pressing block and the sliding rod is ensured by the structure that the fixing rod is horizontal, the center line of the sliding rod and the center line of the fixing rod are in the same straight line, the diameter of the sliding rod and the diameter of the first inner cavity are clearance-matched, and the verticality of the pressing block and the sliding rod is less than 0.03, so that the sliding rod will not deflect when sliding, and the sliding stability of the sliding rod is ensured. At the same time, the pressing block can adjust the clamping angle of the part, so that the verticality of the positioning surface of the part and the axis of the chuck is guaranteed, thereby improving the clamping accuracy and efficiency.

[0018] 3. The elastic body can buffer the pressure of the pressing block, and the slider can be bounced up when the external force is lost, so as to facilitate the next use.

[0019] 4. A buffer pad is provided on the end surface of the pressing block, which can prevent the pressure of the pressing block from being too high and scratching the surface of the part.

[0020] 5. The diameter of the first inner cavity is smaller than that of the second inner cavity, and a step is formed between the first inner cavity and the second inner cavity to prevent the slider from sliding out of the second inner cavity. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0022] Figure 1 The utility model is a schematic diagram of the structure of a CNC machine tool according to an embodiment of a material ejector for clamping parts of a CNC machine tool.

[0023] Figure 2 The utility model provides a schematic structural diagram of a material ejector for clamping parts of a numerically controlled machine tool according to an embodiment of the present invention.

[0024] Figure 3 The utility model provides a cross-sectional view of a material ejector for clamping parts of a numerically controlled machine tool according to an embodiment of the present invention.

[0025] In the figure: 1-chuck, 2-tool holder, 3-slide rail, 4-tool holder, 5-fixed seat, 6-fixed rod, 61-first inner cavity, 62-second inner cavity, 63-plug, 7-sliding rod, 71-sliding block, 8-elastic member, 9-pressing block, 91-buffer pad. DETAILED DESCRIPTION

[0026] The content of the present invention can be more easily understood by referring to the following detailed description of the preferred implementation method of the present invention and the included embodiments. Unless otherwise specified, all technical and scientific terms used herein have the same meanings as those generally understood by ordinary technicians in the field to which the present invention belongs. When there is a conflict, the definition in this specification shall prevail.

[0027] Embodiment 1:

[0028] Provides such as Figure 1-3 The utility model shown provides a material ejector for clamping parts of a numerically controlled machine tool, which can adjust the clamping accuracy of the parts after the parts are clamped, and ensure the verticality between the positioning surface of the parts and the axis of the chuck.

[0029] like Figure 1 As shown, a chuck 1 and a tool holder 2 are provided in a CNC machine tool, the chuck 1 is arranged horizontally, the tool holder 2 is electrically connected to a controller of the CNC machine tool, and the controller is used to control the movement of the tool holder 2 in a horizontal plane. A slide rail 3 is provided on the tool holder 2, and a tool holder 4 is provided on the slide rail 3, and the tool holder 4 is used to place a turning tool.

[0030] A material ejector for clamping parts of a numerical control machine tool comprises: a fixed seat 5, a fixed rod 6, a sliding rod 7, an elastic member 8 and a pressing block 9, wherein the fixed rod 6 is fixed on the fixed seat 5, the sliding rod 7 is slidably connected in the fixed rod 6, the elastic member 8 connects the sliding rod 7 and the fixed rod 6, and the pressing block 9 is fixed to one end of the fixed rod 6. The fixed seat 5 is mounted on the slide rail 3 of the tool holder 2.

[0031] The fixed rod 6 is arranged horizontally, and the midline of the sliding rod 7 is in the same straight line as the midline of the fixed rod 6. The height of the fixed rod 6 is the same as the height of the chuck 1. The verticality of the pressing block 9 and the sliding rod 7 is less than 0.03. A buffer pad 91 is arranged on the end surface of the pressing block 9.

[0032] The fixed rod 6 includes a first inner cavity 61 and a second inner cavity 62. One end of the first inner cavity 61 is connected to the second inner cavity 62. The midlines of the first inner cavity 61 and the second inner cavity 62 are in the same straight line. A plug 63 is provided at the other end of the second inner cavity 62. The diameter of the first inner cavity 61 is smaller than that of the second inner cavity 62. The diameter of the sliding rod 7 is a clearance fit with the diameter of the first inner cavity 61. A slider 71 is provided at one end of the sliding rod 7. The diameter of the slider 71 is the same as the diameter of the second inner cavity 62. The slider 71 is slidably connected to the second inner cavity 62. The two ends of the elastic body are respectively connected to the slider 71 and the plug 63.

[0033] Working principle: put the part into the chuck 1 and clamp the part with the chuck 1, and control the tool holder 2 to move through the controller so that the center line of the fixed rod 6 and the center line of the chuck 1 are in the same vertical plane. After the pressing block 9 is aligned with the part in the chuck 1, the controller controls the tool holder 2 to move so that the pressing block 9 is pressed on the part, and the pressing block 9 fits the positioning surface of the part to adjust the verticality of the positioning surface of the part and the chuck 1.

Claims

1. A material ejector for clamping parts of a CNC machine tool, a chuck and a tool holder, wherein the chuck is arranged horizontally, the tool holder is electrically connected to a controller of the CNC machine tool, the controller is used to control the movement of the tool holder in a horizontal plane, a slide rail is arranged on the tool holder, a tool holder is arranged on the slide rail, and the tool holder is used to place a turning tool, characterized in that: include: A fixed seat, a fixed rod, a sliding rod, an elastic member and a pressure block, wherein the fixed seat is installed on the knife seat, the fixed rod is fixed on the fixed seat, the sliding rod is slidably connected in the fixed rod, the elastic member connects the sliding rod and the fixed rod, and the pressure block is fixed at one end of the fixed rod.

2. The ejector for clamping parts of CNC machine tools according to claim 1, characterized in that: The fixing rod is arranged horizontally.

3. The ejector for clamping parts of CNC machine tools according to claim 2, characterized in that: The midline of the sliding rod is in the same straight line as the midline of the fixed rod.

4. The ejector for clamping parts of CNC machine tools according to claim 3, characterized in that: The fixing rod comprises a first inner cavity and a second inner cavity, one end of the first inner cavity is connected to the second inner cavity, the midlines of the first inner cavity and the second inner cavity are in the same straight line, and a plug is arranged at the other end of the second inner cavity.

5. The ejector for clamping parts of CNC machine tools according to claim 4, characterized in that: The first inner cavity has a smaller diameter than the second inner cavity.

6. The ejector for clamping parts of CNC machine tools according to claim 5, characterized in that: The diameter of the sliding rod and the diameter of the first inner cavity are clearance matched.

7. The ejector for clamping parts of CNC machine tools according to claim 6, characterized in that: A sliding block is provided at one end of the sliding rod, the diameter of the sliding block is the same as the diameter of the second inner cavity, and the sliding block is slidably connected in the second inner cavity.

8. The ejector for clamping parts of CNC machine tools according to claim 7, characterized in that: The two ends of the elastic member are respectively connected to the slider and the plug.

9. The ejector for clamping parts of CNC machine tools according to claim 1, characterized in that: The verticality between the pressing block and the sliding rod is less than 0.

03.

10. The ejector for clamping parts of CNC machine tools according to claim 1, characterized in that: A buffer pad is arranged on the end surface of the pressing block.

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