Cutter clamping device

Abstract

The utility model discloses a cutter clamping device which comprises a shell, a plurality of clamping plates and a driving mechanism, the shell is provided with a mounting cavity, and one side of the shell is provided with an opening communicated with the mounting cavity; the plurality of clamping plates are arranged in the mounting cavity and are arranged on the peripheral side of the opening; the driving mechanism is connected with the multiple clamping plates and used for driving the multiple clamping plates to get close to each other so as to clamp and fix the cutter when the cutter is inserted into the opening. According to the scheme, the cutter is automatically clamped through the driving mechanism, operation is convenient, and manpower is saved.

Description

Technical Field

[0001] The utility model relates to the technical field of numerically controlled machine tools, in particular to a tool clamping device. Background Art

[0002] When machining parts on machine tools, tool changes are often necessary. Conventional methods involve fixing and clamping the tool with bolts through threaded holes, and most operations are manual, which is cumbersome and inefficient. Utility Model Content

[0003] The main purpose of the utility model is to provide a tool clamping device, aiming to solve the problem in the prior art that the tool is fixed and clamped by bolts through threaded holes, and the operation is mostly manual, cumbersome and inefficient.

[0004] In order to achieve the above-mentioned purpose, the present invention provides a tool clamping device, comprising:

[0005] The housing has a mounting cavity, and one side of the housing is provided with an opening communicating with the mounting cavity;

[0006] a plurality of clamping plates disposed in the mounting cavity and on the peripheral side of the opening; and

[0007] The driving mechanism is connected to the plurality of clamping plates and is used for driving the plurality of clamping plates to move closer to each other so as to clamp and fix the tool when the tool is inserted into the opening.

[0008] Optionally, the plurality of clamping plates include a first clamping plate and a second clamping plate disposed opposite to each other in the up-down direction, and a third clamping plate and a fourth clamping plate disposed opposite to each other in the front-back direction;

[0009] At least one of the first clamping plate and the second clamping plate is movably mounted in the mounting cavity along an up-down direction, and at least one of the third clamping plate and the fourth clamping plate is movably mounted in the mounting cavity along a front-back direction.

[0010] Optionally, the third clamping plate is fixed, and the fourth clamping plate is movably arranged in the mounting cavity along the front-back direction. The driving mechanism includes a first driving component and a second driving component, the first driving component is connected to the second clamping plate, and the second driving component is connected to the fourth clamping plate.

[0011] Optionally, the driving mechanism further includes a motor and a reversing structure, wherein the reversing structure has a first active state for the motor to drive the first driving component to move, and a second active state for the motor to drive the second driving component to move.

[0012] Optionally, the motor has an output shaft, and the reversing structure includes a main gear sleeved on the output shaft;

[0013] The first drive assembly includes a first transmission shaft, the first transmission shaft is spaced apart from the output shaft, and a first gear is provided on the first transmission shaft;

[0014] The second drive assembly includes a second transmission shaft, the second transmission shaft is spaced apart from the output shaft, and a second gear is provided on the second transmission shaft;

[0015] The main gear is movable along the axial direction of the output shaft to mesh with the first gear and the second gear respectively.

[0016] Optionally, a through hole is provided on the side of the third clamping plate opposite to the fourth clamping plate, and an abutment extending toward the fourth clamping plate is provided in the through hole. The abutment is movably installed in the through hole, and a reversing assembly is connected to the end of the abutment away from the fourth clamping plate.

[0017] Optionally, a sliding groove is provided in the mounting cavity corresponding to the abutment member along the left and right directions, and the reversing assembly includes a slider and a shift rod. The slider is slidably installed in the sliding groove, one end of the slider is connected to the abutment member, and the other end is provided with a shift rod. The shift rod is coaxially connected to the main gear for shifting the main gear to slide along the left and right directions.

[0018] Optionally, the first drive assembly and the second drive assembly are both provided with a self-locking structure, and the self-locking structure is used to limit the movement of the corresponding splint.

[0019] Optionally, the second transmission shaft includes a worm, the second drive assembly includes a worm wheel, a transmission gear, and a rack, the worm is engaged with the worm wheel, the worm wheel and the transmission gear are coaxially arranged, the rack is arranged on the fourth splint and extends in the left and right directions, the transmission gear is engaged with the rack, and the worm wheel and the worm constitute the self-locking structure.

[0020] The present utility model further discloses a numerically controlled machine tool, the numerically controlled machine tool comprising the above-mentioned tool clamping device, the tool clamping device comprising:

[0021] The housing has a mounting cavity, and one side of the housing is provided with an opening communicating with the mounting cavity;

[0022] a plurality of clamping plates disposed in the mounting cavity and on the peripheral side of the opening; and

[0023] The driving mechanism is connected to the plurality of clamping plates and is used for driving the plurality of clamping plates to move closer to each other so as to clamp and fix the tool when the tool is inserted into the opening.

[0024] In the technical solution provided by the present invention, when the tool needs to be installed, the tool is inserted into the opening, and the driving mechanism drives the multiple clamps to approach and quickly clamp and fix the tool. When the tool needs to be removed, the driving mechanism drives the multiple clamps to separate, and the tool can be easily disassembled and assembled, which is convenient to operate, efficient, and saves manpower. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. 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 the structures shown in these drawings without paying any creative work.

[0026] Figure 1 This is a structural schematic diagram of an embodiment of the tool clamping device provided by the utility model.

[0027] Description of Figure Numbers:

[0028] Label name Label name 100 Tool clamping device 32 Second drive assembly 1 case 321 Second transmission shaft 11 Mounting cavity 322 Second gear 12 Opening 323 worm 2 splint 324 worm gear 21 First splint 325 transmission gears 22 Second splint 326 rack 23 Third splint 33 motor 231 through-hole 331 output shaft 24 Fourth plywood 332 Main gear 3 Drive mechanism 34 Reversing components 31 First drive assembly 345 Abutment 311 First transmission shaft F1 Left and right direction 312 First gear F2 Front and rear direction

[0029] The realization of the purpose, functional features and excellent effects of the utility model will be further explained below with reference to specific embodiments and drawings. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0031] It should be noted that if directional indications are involved in the embodiments of the present invention, the directional indications are only used to explain the relative positional relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0032] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features specified as "first" or "second" may explicitly or implicitly include at least one of such features. In addition, the technical solutions between the various embodiments can be combined with each other, but this must be based on the fact that ordinary technicians in this field can implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0033] When machining parts on machine tools, tool changes are often necessary. Conventional methods involve fixing and clamping the tool with bolts through threaded holes, and most operations are manual, which is cumbersome and inefficient.

[0034] In view of this, the utility model provides a tool clamping device. Figure 1 This is an embodiment of the tool clamping device provided by the utility model.

[0035] Please refer to Figure 1 The tool clamping device 100 includes a shell 1, a plurality of clamps 2 and a driving mechanism 3. The shell 1 has an installation cavity 11, and an opening 12 connected to the installation cavity 11 is provided on one side of the shell 1; the plurality of clamps 2 are arranged in the installation cavity 11 and on the peripheral side of the opening 12; the driving mechanism 3 is connected to the plurality of clamps 2, and is used to drive the plurality of clamps 2 to approach each other to clamp and fix the tool when the tool is inserted into the opening 12.

[0036] In the technical solution provided by the present invention, when a tool needs to be installed, the tool is inserted into the opening 12, and the driving mechanism 3 drives the multiple clamps 2 to approach and quickly clamp and fix the tool. When the tool needs to be removed, the driving mechanism 3 drives the multiple clamps 2 to separate, and the tool can be easily removed. The operation is convenient, efficient, and manpower-saving.

[0037] Specifically, the plurality of clamping plates 2 include a first clamping plate 21 and a second clamping plate 22 disposed opposite each other in the vertical direction, and a third clamping plate 23 and a fourth clamping plate 24 disposed opposite each other in the front-to-back direction. At least one of the first clamping plate 21 and the second clamping plate 22 is movably mounted in the mounting cavity 11 in the vertical direction, and at least one of the third clamping plate 23 and the fourth clamping plate 24 is movably mounted in the front-to-back direction. The movable clamping plates 2 restrict the movement of the tool in the vertical direction and the left-to-right direction F1, respectively, to prevent loosening.

[0038] Furthermore, the third clamping plate 23 is fixed, and the fourth clamping plate 24 is movably disposed in the mounting cavity 11 in the front-to-back direction. The driving mechanism 3 includes a first driving assembly 31 and a second driving assembly 32. The first driving assembly 31 is connected to the second clamping plate 22, and the second driving assembly 32 is connected to the fourth clamping plate 24. The first driving assembly 31 and the second driving assembly 32 are independently provided to respectively drive the corresponding clamping plate 2 to move, thereby preventing the failure of one driving assembly from also causing the failure of the other driving assembly. This improves practicality and safety, and avoids production accidents.

[0039] In this embodiment, the drive mechanism 3 further includes a motor 33 and a reversing structure. The reversing structure has a first active state for the motor 33 to drive the first drive assembly 31, and a second active state for the motor 33 to drive the second drive assembly 32. A single motor 33 can activate two independent drive assemblies, reducing costs.

[0040] Specifically, the motor 33 has an output shaft 331, and the reversing structure includes a main gear 332 sleeved on the output shaft 331. The first drive assembly 31 includes a first transmission shaft 311, which is spaced apart from the output shaft 331 and has a first gear 312 disposed thereon. The second drive assembly 32 includes a second transmission shaft 321, which is spaced apart from the output shaft 331 and has a second gear 322 disposed thereon. The main gear 332 is movable along the axial direction of the output shaft 331 to mesh with the first gear 312 and the second gear 322, respectively. The main gear 332 is movable so that, in a first movable state, it meshes with the first gear 312, and in a second movable state, it meshes with the second gear 322, resulting in a simple structure and convenient switching.

[0041] Furthermore, a through hole 231 is provided on a side of the third clamping plate 23 opposite the fourth clamping plate 24. An abutment member 345 extending toward the fourth clamping plate 24 is disposed within the through hole 231. The abutment member 345 is movably mounted within the through hole 231, and the end of the abutment member 345 away from the fourth clamping plate 24 is connected to the reversing assembly 34. Specifically, in an initial state, the main gear 332 is meshed with the second gear 322, the third clamping plate 23 and the fourth clamping plate 24 approach each other, and the abutment member 345 abuts the cutting tool, thereby pushing the reversing assembly 34 to move, causing the main gear 332 to disengage from the second gear 322 and mesh with the first gear 312. This allows the first clamping plate 21 and the second clamping plate 22 to approach each other to clamp and secure the cutting tool. The present invention can automatically disengage the main gear 332, making operation simple and convenient.

[0042] In this embodiment, a sliding groove is provided in the installation cavity 11 corresponding to the abutment 345 along the left-right direction F1, and the reversing assembly 34 includes a slider and a shift rod. The slider is slidably installed in the sliding groove, one end of the slider is connected to the abutment 345, and the other end is provided with a shift rod. The shift rod is coaxially connected to the main gear 332 for shifting the main gear 332 to slide along the left-right direction F1, and the shift rod will not affect the rotation of the main gear 332.

[0043] In addition, the first drive assembly 31 and the second drive assembly 32 are both provided with a self-locking structure, which is used to limit the movement of the corresponding clamping plate 2 to prevent the second clamping plate 22 and the first clamping plate 21 from loosening their grip on the tool after the main gear 332 disengages from the first gear 312.

[0044] Specifically, the second transmission shaft 321 includes a worm 323, and the second drive assembly 32 includes a worm wheel 324, a transmission gear 325, and a rack 326. The worm 323 meshes with the worm wheel 324, and the worm wheel 324 and the transmission gear 325 are coaxially arranged. The rack 326 is provided on the fourth clamping plate 24 and extends in the left-right direction F1. The transmission gear 325 meshes with the rack 326, and the worm wheel 324 and the worm 323 form the self-locking structure. The self-locking of the worm 323 and the worm wheel 324 prevents the second clamping plate 22 and the first clamping plate 21 from loosening their grip on the tool after the main gear 332 is disengaged from the first gear 312.

[0045] The present utility model also discloses a CNC machine tool, which includes all the technical features of the tool clamping device 100 mentioned above, and therefore also has all the technical effects brought about by the above technical features, which will not be described one by one here.

[0046] The above description is merely an optional embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structure made using the contents of the description and drawings of the present invention, or directly or indirectly applied in other related technical fields, is also included in the patent protection scope of the present invention.

Claims

1. A tool clamping device, characterized in that: include: The housing has a mounting cavity, and one side of the housing is provided with an opening communicating with the mounting cavity; a plurality of clamping plates, disposed in the mounting cavity and disposed around the opening; as well as, The driving mechanism is connected to the plurality of clamping plates and is used for driving the plurality of clamping plates to move closer to each other so as to clamp and fix the tool when the tool is inserted into the opening.

2. The tool holding device according to claim 1, wherein: The plurality of clamping plates include a first clamping plate and a second clamping plate disposed opposite to each other in the up-down direction, and a third clamping plate and a fourth clamping plate disposed opposite to each other in the front-back direction; At least one of the first clamping plate and the second clamping plate is movably mounted in the mounting cavity along an up-down direction, and at least one of the third clamping plate and the fourth clamping plate is movably mounted in the mounting cavity along a front-back direction.

3. The tool holding device according to claim 2, wherein: The third clamping plate is fixedly arranged, and the fourth clamping plate is movably arranged in the installation cavity along the front-back direction. The driving mechanism includes a first driving component and a second driving component. The first driving component is connected to the second clamping plate, and the second driving component is connected to the fourth clamping plate.

4. The tool holding device according to claim 3, characterized in that: The driving mechanism further includes a motor and a reversing structure, wherein the reversing structure has a first active state for the motor to drive the first driving component to move, and a second active state for the motor to drive the second driving component to move.

5. The tool holding device according to claim 4, characterized in that: The motor has an output shaft, and the reversing structure includes a main gear sleeved on the output shaft; The first drive assembly includes a first transmission shaft, the first transmission shaft is spaced apart from the output shaft, and a first gear is provided on the first transmission shaft; The second drive assembly includes a second transmission shaft, the second transmission shaft is spaced apart from the output shaft, and a second gear is provided on the second transmission shaft; The main gear is movable along the axial direction of the output shaft to mesh with the first gear and the second gear respectively.

6. The tool holding device according to claim 5, characterized in that: A through hole is provided on a side of the third clamping plate opposite to the fourth clamping plate, and an abutment member extending toward the fourth clamping plate is provided in the through hole. The abutment member is movably installed in the through hole, and a reversing assembly is connected to the end of the abutment member away from the fourth clamping plate.

7. The tool holding device according to claim 6, characterized in that: A sliding groove along the left and right directions is provided in the installation cavity corresponding to the abutment member, and the reversing assembly includes a slider and a shift rod. The slider is slidably installed in the sliding groove, one end of the slider is connected to the abutment member, and the other end is provided with a shift rod. The shift rod is coaxially connected to the main gear for shifting the main gear to slide along the left and right directions.

8. The tool holding device according to claim 5, wherein: The first drive assembly and the second drive assembly are both provided with a self-locking structure, and the self-locking structure is used to limit the movement of the corresponding clamping plate.

9. The tool holding device according to claim 8, characterized in that: The second transmission shaft includes a worm, and the second drive assembly includes a worm wheel, a transmission gear, and a rack. The worm is engaged with the worm wheel, and the worm wheel and the transmission gear are coaxially arranged. The rack is arranged on the fourth splint and extends in the left and right directions. The transmission gear is engaged with the rack, and the worm wheel and the worm constitute the self-locking structure.

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