Self-tightening drill chuck for machine tool

Abstract

The utility model discloses a self-tightening drill chuck for a machine tool, which relates to the field of drill chucks for machine tools and comprises a drill chuck body, the drill chuck body comprises a rear cover body and an elastic shifting ring, the rear cover body is fixedly connected to the top of the drill chuck body, and the elastic shifting ring is movably mounted outside the drill chuck body. A cleaning assembly is fixedly installed below the outer side of the elastic shifting ring, and a cleaning brush is fixedly installed on the inner side of the cleaning assembly. Through the cleaning assembly arranged outside the elastic shifting ring, after the drill chuck is used for a long time, a connecting frame is connected with a connecting sleeve, the elastic shifting ring is rotated to enable a grab clamp inside the drill chuck body to move outwards, and the connecting frame drives a mounting ring to rotate so as to drive a sliding rod and a cleaning brush on the inner side of the sliding rod to rotate; the cleaning brush is located on the outer side of the grabbing clamp and rotates along with the elastic shifting ring to clean the exterior of the grabbing clamp, so that grease solidified on the grabbing clamp can be regularly cleaned, and the service life of the grabbing clamp is prolonged.

Description

Technical Field

[0001] The utility model relates to the field of machine tool drill chucks, in particular to a self-tightening drill chuck for machine tools. Background Art

[0002] A digitally controlled machine tool is a type of machine tool. It is an automated machine tool equipped with a program control system. The information is input into the numerical control device through an information carrier, and various control signals are sent out by the numerical control device after calculation and processing to control the movement of the machine tool. The parts are automatically processed according to the shape and size required by the drawing. Drill chucks are needed on CNC machine tools. Drill chucks are one of the main accessories in the power tool industry and machine tool industry, and are widely used in hand drills and drilling machines.

[0003] When the existing self-tightening drill chuck for machine tools is used, after the gripping clamp has worked for a long time, grease on the outer wall side of the clamping end solidifies on the surface of the gripping clamp, which makes it inconvenient to clean the surface of the gripping clamp, resulting in a reduction in the service life of the clamping parts. At the same time, the drill chuck drives the gripping clamp to move through the thread by rotating the tensioning ring to clamp the drill bit. During the rotation of the drill chuck, the tensioning ring is prone to rotate, causing the drill bit to loosen, thereby affecting the use of the machine tool. Utility Model Content

[0004] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0005] A self-tightening drill chuck for a machine tool comprises a drill chuck body, the drill chuck body comprises a rear cover body and a tensioning ring, the rear cover body is fixedly connected to the top of the drill chuck body, the tensioning ring is movably mounted on the outside of the drill chuck body, a cleaning assembly is fixedly mounted below the outer side of the tensioning ring, a cleaning brush is fixedly mounted on the inner side of the cleaning assembly, a fixing assembly is movably mounted inside the rear cover body, the cleaning assembly comprises a connecting sleeve, the connecting sleeve is fixedly connected to the outer side of the tensioning ring, the inner side of the connecting sleeve is movably clamped with a connecting frame, the bottom of the connecting frame is fixedly connected with a mounting ring located on the outer side of a gripping clamp in the drill chuck body, a limiting sleeve is fixedly mounted on the outer side of the mounting ring, the inner side of the limiting sleeve is movably clamped with a sliding rod penetrating the mounting ring, and the cleaning brush is fixedly connected to the inner side of the sliding rod.

[0006] A further improvement of the technical solution of the utility model is that: a ring groove is provided inside the tension ring, an internal gear ring is fixedly installed inside the ring groove, a limiting groove is provided inside the rear cover body, and the fixing component is movably installed inside the limiting groove.

[0007] A further improvement of the technical solution of the utility model is that: the fixed component includes a slider and a guide rod, the slider is movably connected to the inside of the limiting groove, the guide rod is fixedly connected to the inner side of the limiting groove, the slider is movably sleeved on the outside of the guide rod, the outside of the guide rod is movably connected to a spring 2 located on the inner side of the slider, the bottom of the slider is fixedly connected to a connecting rod located in the annular groove, and the outer side of the connecting rod is fixedly connected to an engaging tooth block.

[0008] A further improvement of the technical solution of the utility model is that the inner side of the limit sleeve is fixedly connected to the limit rod, the limit rod is movably clamped in the interior of the slide rod, and the outer side of the limit rod is movably sleeved with a spring located on the outer side of the slide rod.

[0009] A further improvement of the technical solution of the utility model is that a brush rod is arranged on the inner side of the cleaning brush, and the brush rod is arranged in an inclined surface.

[0010] A further improvement of the technical solution of the utility model is that: three connecting sleeves and three connecting frames are provided, and permanent magnet blocks corresponding to the connecting frames are fixedly installed inside the connecting sleeves.

[0011] A further improvement of the technical solution of the utility model is that: the outer side of the sliding block is fixedly connected with a pressing block located outside the rear cover body.

[0012] A further improvement of the technical solution of the utility model is that the meshing tooth block meshes with the inner gear ring.

[0013] Due to the adoption of the above technical solution, the utility model has achieved the following technical progress compared with the prior art:

[0014] The utility model provides a self-tightening drill chuck for machine tools. Through a cleaning component arranged on the outside of a tensioning ring, after long-term use, a connecting frame is connected with a connecting sleeve, and the tensioning ring is rotated to move a gripping clamp inside a drill chuck body outward. The connecting frame drives a mounting ring to rotate, thereby driving a sliding rod and a cleaning brush inside the sliding rod to rotate. The cleaning brush is located on the outside of the gripping clamp and rotates with the tensioning ring to clean the outside of the gripping clamp, so that regular cleaning can be performed to reduce grease solidification in the gripping clamp and extend the service life of the gripping clamp.

[0015] The utility model provides a self-tightening drill chuck for machine tools. A fixing assembly is arranged inside a rear cover body, and a tensioning ring can be limited and fixed by the fixing assembly to prevent the tensioning ring from rotating and causing the clamp to loosen, so as to prevent the tensioning ring from rotating and causing the drill bit to loosen during the use of the drill chuck body. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of a self-tightening drill chuck for machine tools of the utility model;

[0017] Figure 2 This is a schematic diagram of the structure of the cleaning component of the utility model;

[0018] Figure 3 It is a structural schematic diagram of the telescopic frame of the utility model;

[0019] Figure 4 It is a structural schematic diagram of the connecting piece of the utility model;

[0020] Figure 5 It is a structural schematic diagram of the fixing component of the utility model.

[0021] In the figure: 1. drill chuck body; 101. rear cover; 102. tension ring; 1011. limit groove; 1021. ring groove; 1022. inner gear ring; 2. cleaning assembly; 21. connecting sleeve; 22. connecting frame; 23. mounting ring; 24. limit sleeve; 25. slide rod; 26. limit rod; 27. spring 1; 28. permanent magnet block; 3. cleaning brush; 31. brush rod; 4. fixing assembly; 41. slide block; 42. guide rod; 43. spring 2; 44. pressing block; 45. connecting rod; 46. meshing tooth block. DETAILED DESCRIPTION

[0022] The utility model is further described in detail below:

[0023] like Figures 1 to 5 As shown, the utility model provides a self-tightening drill chuck for a machine tool, comprising a drill chuck body 1, the drill chuck body 1 comprising a rear cover body 101 and a tensioning ring 102, the rear cover body 101 being fixedly connected to the top of the drill chuck body 1, the tensioning ring 102 being movably mounted on the outside of the drill chuck body 1, a cleaning assembly 2 being fixedly mounted below the outer side of the tensioning ring 102, a cleaning brush 3 being fixedly mounted on the inner side of the cleaning assembly 2, a fixing assembly 4 being movably mounted inside the rear cover body 101, the cleaning assembly 2 comprising a connecting sleeve 21, the connecting sleeve 21 being fixedly connected to the outer side of the tensioning ring 102, a connecting frame 22 being movably connected inside the connecting sleeve 21, a mounting ring 23 located on the outer side of the inner gripping clamp of the drill chuck body 1 being fixedly connected at the bottom of the connecting frame 22, a limiting sleeve 24 being fixedly mounted on the outer side of the mounting ring 23, a sliding rod 25 penetrating the mounting ring 23 being movably connected inside the limiting sleeve 24, and a cleaning brush 3 being fixedly connected to the inner side of the sliding rod 25.

[0024] Through the cleaning component 2 arranged on the outside of the tension ring 102, after long-term use, by connecting the connecting frame 22 with the connecting sleeve 21, the tension ring 102 is rotated to move the internal clamp of the drill chuck body 1 outward, and the mounting ring 23 is driven to rotate by the connecting frame 22, thereby driving the slide rod 25 and the cleaning brush 3 inside the slide rod 25 to rotate, and the cleaning brush 3 is located on the outside of the clamp to clean the outside of the clamp as the tension ring 102 rotates, thereby reducing grease solidification in the clamp and extending the service life of the clamp. At the same time, through the fixing component 4 arranged inside the rear cover body 101, the tension ring 102 can be limited and fixed by the fixing component 4 to prevent the tension ring 102 from rotating and causing the clamp to loosen, so as to prevent the tension ring 102 from rotating and causing the drill bit to loosen during the use of the drill chuck body 1.

[0025] like Figure 2 and Figure 5 As shown, a ring groove 1021 is provided inside the tension ring 102 , an inner gear ring 1022 is fixedly installed inside the ring groove 1021 , a limiting groove 1011 is provided inside the rear cover body 101 , and the fixing component 4 is movably installed inside the limiting groove 1011 .

[0026] The fixing assembly 4 includes a slider 41 and a guide rod 42. The slider 41 is movably connected to the inside of the limiting groove 1011, and the guide rod 42 is fixedly connected to the inner side of the limiting groove 1011. The slider 41 is movably sleeved on the outside of the guide rod 42. The outside of the guide rod 42 is movably connected to a spring 43 located on the inner side of the slider 41. The bottom of the slider 41 is fixedly connected to a connecting rod 45 located in the annular groove 1021, and the outer side of the connecting rod 45 is fixedly connected to an engaging tooth block 46.

[0027] By pressing the pressing block 44, the pressing block 44 drives the slider 41 to move inward along the limiting groove 1011 to squeeze the spring 2 43 outside the guide rod 42. The slider 41 moves inward to drive the connecting rod 45 and the meshing tooth block 46 to move inward along the annular groove 1021 so that the meshing tooth block 46 disengages from the inner gear ring 1022. After the tension ring 102 is rotated to adjust the clamp, the pressing block 44 is released so that the slider 41 is pushed by the elastic force of the spring 2 43 to drive the connecting rod 45 to move outward so that the meshing tooth block 46 engages with the inner gear ring 1022 to limit the tension ring 102, thereby preventing the tension ring 102 from rotating and causing the clamp to loosen, thereby preventing the tension ring 102 from rotating during use and causing the drill bit to loosen.

[0028] like Figure 4 As shown, the inner side of the limiting sleeve 24 is fixedly connected to a limiting rod 26 , the limiting rod 26 is movably clamped in the interior of the slide bar 25 , and the outer side of the limiting rod 26 is movably sleeved with a spring 27 located on the outer side of the slide bar 25 .

[0029] The limit rod 26 cooperates with the spring 1 27 to push the slide rod 25 inward, so that the cleaning brush 3 abuts against the outside of the gripping clamp to clean with the rotation, thereby reducing the influence of grease solidification.

[0030] like Figure 4 As shown, a brush rod 31 is arranged on the inner side of the cleaning brush 3, and the brush rod 31 is arranged in an inclined surface.

[0031] The brush rod 31 arranged in an inclined surface facilitates cleaning of the solidified grease on the clamp.

[0032] like Figure 2 As shown, three connecting sleeves 21 and three connecting frames 22 are provided, and permanent magnet blocks 28 corresponding to the connecting frames 22 are fixedly installed inside the connecting sleeves 21 .

[0033] The three connecting sleeves 21 are matched with the connecting frame 22 , and a permanent magnet block 28 is arranged in the connecting sleeve 21 . The permanent magnet block 28 can be a magnetic block to facilitate the connection with the connecting frame 22 .

[0034] like Figure 3 As shown, the outer side of the sliding block 41 is fixedly connected to a pressing block 44 located outside the rear cover body 101 .

[0035] The meshing gear block 46 meshes with the inner gear ring 1022 .

[0036] The pressing block 44 is used to push the slider 41 inward to disengage the meshing tooth block 46 meshing with the inner tooth ring 1022 , thereby releasing the fixation of the tensioning ring 102 .

[0037] The following is a detailed description of the working principle of the self-tightening drill chuck for this machine tool.

[0038] like Figures 1 to 5As shown, by inserting the connecting frame 22 into the connecting sleeve 21 located on the outside of the tension ring 102 from the bottom, the connecting frame 22 is adsorbed and connected with the permanent magnet block 28 in the connecting sleeve 21, and the internal clamping part of the drill chuck body 1 is driven to extend from the bottom of the drill chuck body 1 by rotating the tension ring 102. During the rotation of the tension ring 102, the cleaning component 2 also rotates accordingly, and the mounting ring 23 is driven to rotate by the connecting frame 22, thereby driving the limit sleeve 24 to rotate, and the slide rod 25 is supported by the spring 1 27 to slide inwardly along the limit rod 26. The brush rod 31 on the inner side of the cleaning brush 3 is located on the outside of the clamp. When the clamp is extended, the cleaning brush 3 is against the clamp surface, and the cleaning brush 3 is tightened by the tension ring 102. The ring 102 is rotated to rotate the brush rod 31 to contact the clamp for cleaning, thereby reducing grease solidification in the clamp and extending the service life of the clamp. At the same time, by pressing the pressing block 44, the pressing block 44 drives the slider 41 to move inward along the limiting groove 1011 to squeeze the spring 2 43 outside the guide rod 42, and the slider 41 moves inward to drive the connecting rod 45 and the meshing tooth block 46 to move inward along the annular groove 1021 so that the meshing tooth block 46 is disengaged from the inner gear ring 1022. After the clamp is adjusted by rotating the tension ring 102, the pressing block 44 is released so that the slider 41 is pushed by the elastic force of the spring 2 43 to drive the connecting rod 45 to move outward so that the meshing tooth block 46 is meshed with the inner gear ring 1022 to limit the tension ring 102, thereby preventing

[0039] The rotation of the tensioning ring 102 causes the gripping clamp to be released, so as to prevent the rotation of the tensioning ring 102 during use from causing the drill bit to loosen.

[0040] The above generally describes the present invention in detail, but it is obvious to a person skilled in the art that some modifications or improvements can be made to the present invention. Therefore, modifications or improvements that do not deviate from the spirit of the present invention are within the scope of protection of the present invention.

Claims

1. A self-tightening drill chuck for a machine tool, comprising a drill chuck body (1), characterized in that: The drill chuck body (1) comprises a rear cover body (101) and a tensioning ring (102), wherein the rear cover body (101) is fixedly connected to the top of the drill chuck body (1), and the tensioning ring (102) is movably mounted on the outside of the drill chuck body (1), a cleaning component (2) is fixedly mounted below the outside of the tensioning ring (102), a cleaning brush (3) is fixedly mounted on the inside of the cleaning component (2), a fixing component (4) is movably mounted inside the rear cover body (101), and the cleaning component (2) comprises a connecting The connecting sleeve (21) is fixedly connected to the outer side of the tensioning ring (102); the connecting sleeve (21) is movably connected to a connecting frame (22) inside the connecting sleeve (21); the bottom of the connecting frame (22) is fixedly connected to a mounting ring (23) located outside the gripping clamp inside the drill chuck body (1); a limiting sleeve (24) is fixedly installed on the outer side of the mounting ring (23); the limiting sleeve (24) is movably connected to a sliding rod (25) penetrating the mounting ring (23); and the cleaning brush (3) is fixedly connected to the inner side of the sliding rod (25).

2. A self-tightening drill chuck for machine tools according to claim 1, characterized in that: The tensioning ring (102) is provided with an annular groove (1021) inside, an inner gear ring (1022) is fixedly installed inside the annular groove (1021), a limiting groove (1011) is provided inside the rear cover body (101), and the fixing component (4) is movably installed inside the limiting groove (1011).

3. A self-tightening drill chuck for machine tools according to claim 2, characterized in that: The fixing assembly (4) comprises a slider (41) and a guide rod (42); the slider (41) is movably engaged with the interior of the limiting groove (1011); the guide rod (42) is fixedly connected to the inner side of the limiting groove (1011); the slider (41) is movably sleeved on the exterior of the guide rod (42); the exterior of the guide rod (42) is movably engaged with a spring 2 (43) located on the interior side of the slider (41); the bottom of the slider (41) is fixedly connected with a connecting rod (45) located in the annular groove (1021); and the exterior side of the connecting rod (45) is fixedly connected with a meshing tooth block (46).

4. A self-tightening drill chuck for machine tools according to claim 2, characterized in that: The inner side of the limiting sleeve (24) is fixedly connected to a limiting rod (26), the limiting rod (26) is movably engaged with the inside of the sliding rod (25), and the outer side of the limiting rod (26) is movably sleeved with a spring 1 (27) located outside the sliding rod (25).

5. A self-tightening drill chuck for machine tools according to claim 2, characterized in that: A brush rod (31) is arranged on the inner side of the cleaning brush (3), and the brush rod (31) is arranged in an inclined surface.

6. A self-tightening drill chuck for machine tools according to claim 2, characterized in that: Three of the connection sleeves (21) and three of the connection frames (22) are provided, and a permanent magnet block (28) corresponding to the connection frame (22) is fixedly mounted inside the connection sleeve (21).

7. A self-tightening drill chuck for machine tools according to claim 3, characterized in that: The outer side of the sliding block (41) is fixedly connected to a pressing block (44) located outside the rear cover body (101).

8. The self-tightening drill chuck for machine tools according to claim 3, characterized in that: The meshing tooth block (46) and the inner tooth ring (1022) mesh with each other.

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