Z-axis structure of numerical control machining equipment

Abstract

The Z-axis structure of the numerical control machining equipment comprises a power main shaft, a main shaft installation frame, a main shaft protection piece and a ferromagnetic fixing block, the power main shaft is arranged on the main shaft installation frame, the main shaft protection piece is arranged on the main shaft installation frame and used for shielding the power main shaft, and the ferromagnetic fixing block is arranged on the main shaft protection piece and used for fixing the power main shaft. The front surface of the ferromagnetic fixing block is a plane, or the front surface is provided with a plane area. According to the utility model, the ferromagnetic fixing block is additionally arranged, the front surface of the ferromagnetic fixing block is a plane or is provided with a plane area, the dial indicator can be firmly adsorbed at the plane area of the ferromagnetic fixing block, the adsorption force is strong enough, the dial indicator is not easy to loosen, the precision is ensured during parallelism detection, and the adsorption position of the dial indicator does not need to be repeatedly adjusted. And the detection efficiency is higher. And the material of the main shaft protection piece is not important any more, and the material in the prior art can still be adopted without being changed.

Description

Technical Field

[0001] The present application relates to the technical field of numerical control processing equipment, and in particular to a Z-axis structure of numerical control processing equipment. Background Art

[0002] The accuracy of the machine table or the processed product is one of the important accuracies of CNC machine tools. Before product processing, it is generally necessary to detect the position accuracy of the machine table or the processed product, especially the parallelism with the three motion axes. The conventional practice is to fix the micrometer on the Z axis of the machine tool, with the needle touching the side of the machine table or the processed product, and then make the machine tool move along the X axis or Y axis. When the micrometer no longer jumps, it means that the side of the machine table or the processed product is parallel to the X axis or Y axis of the machine tool.

[0003] In the prior art, there are two main fixed positions for the micrometer. One is on the power spindle. Since the power spindle is round, when the micrometer is adsorbed to the outer surface of the power spindle, it is not firm and is easy to loosen, resulting in inaccurate detection accuracy; the other is on the protective sheet metal of the power spindle. Since the protective sheet metal is often in contact with the cutting fluid, the material needs to be corrosion-resistant. Generally, stainless steel materials such as SUS201 are used. The magnetism of stainless steel is very weak, and the micrometer adsorption is not firm enough or even cannot be adsorbed. If ferromagnetic materials are used, although the magnetism is enhanced, the corrosion resistance is poor, which affects the service life of the protective sheet metal and needs to be improved. Utility Model Content

[0004] In order to solve the technical problem in the prior art that the micrometer is difficult to be firmly fixed on the Z-axis of a machine tool, the utility model provides a Z-axis structure of a numerical control machining equipment.

[0005] The technical solution provided in this application is as follows: A Z-axis structure of a CNC machining equipment, comprising a power spindle, a spindle mounting frame, a spindle guard and a ferromagnetic fixed block, the power spindle being arranged on the spindle mounting frame, the spindle guard being arranged on the spindle mounting frame, and being used to shield the power spindle and prevent machining debris and cutting fluid from entering the interior of the power spindle, the ferromagnetic fixed block being arranged on the spindle guard, and the front surface of the ferromagnetic fixed block being a plane, or the front surface being provided with a plane area.

[0006] By adopting the above technical solution, the present application adds a ferromagnetic fixing block, the front surface of the ferromagnetic fixing block is a plane, or the front surface is provided with a plane area, the micrometer can be firmly adsorbed on the plane area of ​​the ferromagnetic fixing block, the adsorption force is strong enough, and it is not easy to loosen, the accuracy is more guaranteed when performing parallelism detection, and there is no need to repeatedly adjust the adsorption position of the micrometer, and the detection efficiency is higher. The material of the spindle guard is no longer important, and the material in the prior art can still be used without change.

[0007] Preferably, the ferromagnetic fixing block is made of S136 die steel, and its surface is chrome-plated.

[0008] By adopting the above technical solution, S136 mold steel has the advantages of corrosion resistance, wear resistance, hardenability, low deformation rate, etc. It is less likely to rust after chrome plating on the surface. It also has good ferromagnetism and can be adsorbed by magnets. The micrometer is firmly adsorbed on the ferromagnetic fixing block.

[0009] Preferably, the spindle guard is a sheet metal part made of stainless steel.

[0010] By adopting the above technical solution, the spindle guard can still use the materials in the existing technology without making any changes. The stainless steel material has high strength and hardness, as well as good corrosion resistance. It can work for a long time in an environment of contact with cutting fluid and has a long service life.

[0011] Preferably, the spindle protection component includes a front sheet metal, a left sheet metal, a right sheet metal and a bottom sheet metal, which semi-enclose the power spindle and the spindle mounting frame, and the ferromagnetic fixing block is arranged on the front sheet metal.

[0012] By adopting the above technical solution, the power spindle and the spindle mounting frame are semi-enclosed, which has a good protective effect on the power spindle.

[0013] Preferably, the ferromagnetic fixing block is fixed to the front sheet metal by a plurality of screws, and the screws are waterproof screws.

[0014] By adopting the above technical solution, cutting fluid is prevented from entering into the interior of the spindle guard through the screw hole and affecting the power spindle.

[0015] Preferably, an opening is further provided on the front sheet metal, and a spindle control panel is provided at the opening.

[0016] By adopting the above technical solution, the power spindle can be manually operated through the spindle control panel.

[0017] Preferably, the power spindle is an electric spindle.

[0018] Preferably, the Z-axis structure also includes a mounting slide, a linear guide, a linear motor and a grating scale. The spindle mounting frame is set on the mounting slide for sliding up and down through the linear guide. The linear motor is set on the mounting slide to drive the spindle mounting frame to rise and fall. The grating scale is also set on the mounting slide to detect the displacement of the spindle mounting frame.

[0019] By adopting the above technical solution, the linear motor drives the power spindle to rise and fall, realizing basic detection and processing functions.

[0020] In summary, the present application includes at least one of the following beneficial technical effects:

[0021] 1. The micrometer can be firmly adsorbed on the plane area of ​​the ferromagnetic fixed block. The adsorption force is strong enough and it is not easy to loosen. The accuracy is more guaranteed when performing parallelism detection. There is no need to repeatedly adjust the adsorption position of the micrometer, and the detection efficiency is higher;

[0022] 2. The ferromagnetic fixing block is made of S136 die steel, and the surface is chrome-plated. It has the advantages of corrosion resistance, wear resistance, low deformation rate, and is not easy to rust. It also has good ferromagnetism, and the micrometer is firmly adsorbed on the ferromagnetic fixing block;

[0023] 3. The spindle guard semi-encloses the power spindle and the spindle mounting frame, providing good protection for the power spindle. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is a three-dimensional diagram of the Z-axis structure of the CNC machining equipment described in the embodiment of the present application;

[0025] Figure 2 It is a three-dimensional diagram of the Z-axis structure of the CNC machining equipment described in the embodiment of the present application from another angle;

[0026] Figure 3 It is a schematic diagram of the decomposed structure of the Z-axis structure of the numerical control machining equipment described in the embodiment of the present application;

[0027] Figure 4 It is a schematic diagram of the matching relationship between the spindle protection member and the ferromagnetic fixing block described in the embodiment of the present application;

[0028] Figure 5 It is a schematic diagram of the back structure of the spindle protection member described in the embodiment of the present application;

[0029] Figure 6 It is a structural schematic diagram of a CNC machining device that uses the Z-axis structure described in this application.

[0030] Explanation of the reference numerals in the accompanying drawings: 1. power spindle; 2. spindle mounting frame; 3. spindle guard; 31. front sheet metal; 32. left sheet metal; 33. right sheet metal; 34. bottom sheet metal; 35. opening; 4. ferromagnetic fixing block; 5. mounting slide; 6. linear guide rail; 7. workbench. DETAILED DESCRIPTION

[0031] The following is combined with Figure 1-6 This application is described in further detail.

[0032] Reference Figures 1 to 3The embodiment of the present application discloses a Z-axis structure of a CNC machining device, including a power spindle 1, a spindle mounting frame 2, a spindle guard 3, a ferromagnetic fixing block 4, a mounting slide 5, a linear guide 6, a linear motor (not shown) and a grating ruler (not shown).

[0033] Reference Figure 3 and Figure 6 The mounting slide 5 is generally arranged on the horizontal slide of the X-axis, the spindle mounting frame 2 is slidably arranged on the mounting slide 5 through the linear guide rail 6, the linear motor is arranged on the mounting slide 5, and is used to drive the spindle mounting frame 2 to rise and fall, and the grating ruler is also arranged on the mounting slide 5, and is used to detect the displacement of the spindle mounting frame 2. The linear motor drives the power spindle 1 to rise and fall, and realizes the basic detection and processing functions. The power spindle 1 is preferably an electric spindle. The workbench 7 is generally arranged on the base of the CNC processing equipment.

[0034] Reference Figure 1 and Figure 2 The power spindle 1 is arranged on the spindle mounting frame 2, the spindle protection member 3 is arranged on the spindle mounting frame 2, and is used to shield the power spindle 1 to prevent machining debris and cutting fluid from entering the inside of the power spindle 1, the ferromagnetic fixing block 4 is arranged on the spindle protection member 3, and the front surface of the ferromagnetic fixing block 4 is a plane, or the front surface is provided with a plane area. The micrometer can be adsorbed on the plane area of ​​the ferromagnetic fixing block 4.

[0035] In this embodiment, the spindle guard 3 is a sheet metal part made of stainless steel. It can still use the SUS201 material in the prior art without making any changes. The SUS201 material has high strength and hardness, and has good corrosion resistance. It can work in an environment of contact with cutting fluid for a long time and has a long service life. The material of the ferromagnetic fixed block 4 can be S136 mold steel, and the surface is chrome-plated. S136 mold steel has the advantages of corrosion resistance, wear resistance, hardenability, low deformation rate, etc. The surface is less prone to rust after chrome plating, and it has good ferromagnetism and can be adsorbed by magnets. The micrometer is firmly adsorbed on the ferromagnetic fixed block 4.

[0036] Reference Figure 5 and Figure 6 The spindle guard 3 includes a front sheet metal 31, a left sheet metal 32, a right sheet metal 33 and a bottom sheet metal 34, which semi-enclose the power spindle 1 and the spindle mounting frame 2, and have a good protective effect on the power spindle 1. The ferromagnetic fixing block 4 is arranged on the front sheet metal 31 to facilitate the adsorption of the micrometer. The ferromagnetic fixing block 4 is fixed to the front sheet metal 31 by a plurality of screws (not shown), and the screws are preferably waterproof screws to prevent cutting fluid from entering the interior of the spindle guard 3 from the screw holes and affecting the power spindle 1.

[0037] Reference Figure 1 The front sheet metal 31 is also provided with an opening 35, and a spindle control panel is provided at the opening 35. The power spindle 1 can be manually operated through the spindle control panel, which can be a spindle loosening button panel. After pressing the spindle loosening button, the power spindle will loosen the tool.

[0038] The implementation principle of the present application is as follows: the present application adds a ferromagnetic fixing block 4, the front surface of the ferromagnetic fixing block 4 is a plane, or the front surface is provided with a plane area, the micrometer can be firmly adsorbed on the plane area of ​​the ferromagnetic fixing block 4, the adsorption force is strong enough, and it is not easy to loosen, and the accuracy is more guaranteed when performing parallelism detection, and there is no need to repeatedly adjust the adsorption position of the micrometer, and the detection efficiency is higher. The material of the spindle guard 3 is no longer important, and the material in the prior art can still be used without change.

[0039] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A Z-axis structure of a CNC machining device, characterized in that: The invention comprises a power spindle (1), a spindle mounting frame (2), a spindle protection member (3) and a ferromagnetic fixing block (4); the power spindle (1) is arranged on the spindle mounting frame (2); the spindle protection member (3) is arranged on the spindle mounting frame (2) and is used to shield the power spindle (1) and prevent machining debris and cutting fluid from entering the inside of the power spindle (1); the ferromagnetic fixing block (4) is arranged on the spindle protection member (3); and the front surface of the ferromagnetic fixing block (4) is a plane, or the front surface is provided with a plane area.

2. The Z-axis structure of the numerical control machining equipment according to claim 1, characterized in that: The material of the ferromagnetic fixing block (4) is S136 die steel, and the surface is chrome-plated.

3. The Z-axis structure of the numerical control machining equipment according to claim 1, characterized in that: The spindle protection part (3) is a sheet metal part made of stainless steel.

4. The Z-axis structure of the numerical control machining equipment according to claim 1, characterized in that: The spindle protection member (3) comprises a front sheet metal (31), a left sheet metal (32), a right sheet metal (33) and a bottom sheet metal (34), and semi-encloses the power spindle (1) and the spindle mounting frame (2); the ferromagnetic fixing block (4) is arranged on the front sheet metal (31).

5. The Z-axis structure of the numerical control machining equipment according to claim 4, characterized in that: The ferromagnetic fixing block (4) is fixed to the front sheet metal (31) by means of a plurality of screws, wherein the screws are waterproof screws.

6. The Z-axis structure of the numerical control machining equipment according to claim 4, characterized in that: The front sheet metal (31) is also provided with an opening (35), and a spindle control panel is provided at the opening (35).

7. The Z-axis structure of the numerical control machining equipment according to claim 1, characterized in that: The power spindle (1) is an electric spindle.

8. The Z-axis structure of the numerical control machining equipment according to claim 1, characterized in that: The invention also comprises a mounting slide (5), a linear guide rail (6), a linear motor and a grating ruler. The spindle mounting frame (2) is slidably arranged on the mounting slide (5) via the linear guide rail (6) up and down. The linear motor is arranged on the mounting slide (5) for driving the spindle mounting frame (2) to rise and fall. The grating ruler is also arranged on the mounting slide (5) for detecting the displacement of the spindle mounting frame (2).

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