Axial clamping jaw of milling cutter

Abstract

The utility model provides an axial clamping jaw of a milling cutter, which comprises a placing box, a transmission structure arranged inside the placing box, a driving device arranged outside the placing box, an output end of the driving device connected with an input end of the transmission structure, an output end of the transmission structure capable of rotating, and a plurality of pressing blocks arranged on an inner ring of the output end of the transmission structure along the radial direction. The output end can drive each pressing block to slide, the rotating chuck is located on the inner ring of the output end, and one end of each pressing block which slides relatively can be clamped to the periphery of one end of the rotating chuck. According to the axial clamping jaw of the milling cutter, the plurality of pressing blocks are arranged on the inner ring of the transmission structure, so that the space of equipment is reasonably utilized, and the occupied space of the equipment is reduced; the clamping head can drive the T-shaped top bolt to slide in the axial direction of the worm gear, the clamping head sliding in the axial direction can reduce the equipment installation diameter, and the clamping head is installed through the bottom plate and the cover plate and is convenient to maintain.

Description

Technical Field

[0001] The utility model belongs to the field of numerical control centers, in particular to an axial clamping jaw of a milling tool. Background Art

[0002] The automatic loading and unloading equipment of the CNC tool handle has a T-shaped hole on the rotating ring and two clamping claws installed radially along the rotating ring. When the rotating ring rotates, the two clamping claws will be stuck in the T-shaped hole of the rotating ring, so that the tool handle can be tightened and loosened. The disadvantages of the prior art are: since the elastic clamping claw is radially installed, the radial dimension required is large, and the installation space is also correspondingly large, resulting in a corresponding increase in the size of the corresponding equipment. Utility Model Content

[0003] In view of this, the utility model aims to provide an axial clamping jaw for a milling cutter to solve the problem that the elastic clamping jaw in the prior art is radially installed, the device is large in size and occupies a large space.

[0004] In order to achieve the above object, the technical solution of the utility model is implemented as follows:

[0005] An axial clamping jaw of a milling tool comprises a placing box, a transmission structure is arranged inside the placing box, a driving device is installed outside the placing box, the output end of the driving device is connected to the input end of the transmission structure, the output end of the transmission structure can rotate, and a plurality of clamping blocks are arranged radially on the inner ring of the output end of the transmission structure, the output end can drive each clamping block to slide, a rotating chuck is located in the inner ring of the output end, and one end of the relatively sliding clamping block can be clamped to the outer periphery of one end of the rotating chuck.

[0006] Furthermore, the transmission structure includes a worm and a worm wheel, and the outer periphery of the worm is rotatably connected to the interior of the placement box, one end of the worm is fixedly connected to the output end of the driving device, one end of the worm wheel is rotatably connected to the interior of the placement box through a bearing, and the outer periphery of the worm is meshed with the outer periphery of the worm wheel, a through hole is provided in the middle of the worm wheel, and a plurality of clamping blocks are evenly distributed radially on the side walls of the through hole.

[0007] Furthermore, each clamping block includes a base plate and a cover plate, and an adapter plate is installed at one end of the worm gear, and a plurality of mounting grooves are radially provided at the upper end of the adapter plate, the base plate is fixedly installed in one mounting groove, and the cover plate is detachably installed on the base plate, a first through hole is provided at one end of the base plate, and a baffle is installed on the side wall of the first through hole, a card joint is slidably connected in the first through hole, and a boss is provided on one side of the card joint, and the lower end of the boss can abut against the upper end of the baffle, and a second through hole is provided at one end of the cover plate, the first through hole and the second through hole are coaxially arranged, a T-shaped top bolt is slidably installed in the first through hole, and the upper end of the T-shaped top bolt can be clamped to the upper side of the cover plate, and the lower end of the T-shaped top bolt is threadedly connected to the upper end of the card joint, and the card joint can drive the T-shaped top bolt to slide along the axial direction of the worm gear.

[0008] Furthermore, a spring is arranged on the periphery of the T-shaped top bolt, and one end of the spring is fixedly connected to the periphery of the T-shaped top bolt, and the other end of the spring is fixedly connected to the cover plate or the bottom plate.

[0009] Furthermore, the rotary chuck comprises a chuck head, a plurality of clamping grooves are evenly distributed on the periphery of the chuck head along the circumferential direction, and the clamping grooves correspond to the clamping joints one by one, and the clamping joints can be clamped into the clamping grooves.

[0010] Furthermore, a spacer is provided on the inner ring of the chuck, a gap is provided between the outer periphery of the spacer and the inner ring of the chuck, a plurality of rollers are radially provided on the outer periphery of the spacer, each roller is located in the gap, a plurality of arc grooves are radially provided on the inner ring of the chuck, and each roller corresponds to an arc groove, a plurality of through grooves are radially provided on the side wall of the spacer, each roller is located in a through groove, and the roller can move radially along the spacer in the through groove by rolling on the surface of the arc groove, and the plurality of radially moving rollers constitute a variable diameter structure of the inner ring of the spacer, and the spacer of the variable diameter structure is an opening and closing structure connecting the outer periphery of the milling cutter handle to the inner ring of the chuck.

[0011] Furthermore, the side wall of the spacer is provided with a plurality of working units along the axial direction, and each working unit comprises a plurality of through grooves evenly distributed along the radial direction.

[0012] Compared with the prior art, the axial clamping jaw of a milling cutter described in the utility model has the following

[0013] Beneficial effects:

[0014] (1) The utility model discloses an axial clamping jaw of a milling cutter, wherein a plurality of clamping blocks are installed on the inner ring of a transmission structure, so as to rationally utilize the equipment space and reduce the space occupied by the equipment; the clamping joint can drive the T-shaped top bolt to slide along the axial direction of the worm gear, and the clamping joint sliding along the axial direction can reduce the installation diameter of the equipment, and the clamping joint is installed through a base plate and a cover plate for easy maintenance.

[0015] (2) The axial clamping jaws and rotating chuck of a milling tool described in the utility model are easy to operate and can be opened and closed without disassembly and flipping. They can quickly switch between tightening and loosening, saving time. A constant torque can be generated through the variable diameter structure 11 to ensure the accuracy and consistency of clamping. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the accompanying drawings:

[0017] Figure 1 It is a schematic structural diagram of an axial clamping jaw of a milling cutter according to an embodiment of the utility model;

[0018] Figure 2 It is a top view schematic diagram of an axial clamping jaw of a milling cutter according to an embodiment of the utility model;

[0019] Figure 3 This is a structural schematic diagram of installing a pressing block on the adapter plate according to an embodiment of the utility model;

[0020] Figure 4 It is a cross-sectional schematic diagram of installing a pressing block on the adapter plate according to an embodiment of the utility model;

[0021] Figure 5 This is a schematic diagram of the exploded structure of installing a pressing block on the adapter plate according to an embodiment of the utility model;

[0022] Figure 6 It is a structural schematic diagram of the transmission structure described in an embodiment of the utility model;

[0023] Figure 7 This is a schematic structural diagram of a rotary chuck according to an embodiment of the utility model;

[0024] Figure 8 It is a schematic diagram of the exploded structure of the rotary chuck according to the embodiment of the utility model;

[0025] Fig. 9 It is a schematic cross-sectional structure diagram of the rotary chuck described in an embodiment of the utility model.

[0026] Description of reference numerals:

[0027] 1-placing box; 2-transmission structure; 21-worm; 22-worm wheel; 3-driving device; 4-pressing block; 41-bottom plate; 42-cover plate; 43-installation groove; 44-baffle; 45-clamping joint; 46-T-shaped top bolt; 5-rotating chuck; 51-clamping head; 52-clamping groove; 53-spacer; 54-roller; 55-arc groove. DETAILED DESCRIPTION

[0028] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0029] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0030] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0031] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0032] like Figure 1-Figure 9 As shown, an axial clamp of a milling tool includes a placement box 1, a transmission structure 2 is arranged inside the placement box 1, a driving device 3 is installed outside the placement box 1, the output end of the driving device 3 is connected to the input end of the transmission structure 2, the output end of the transmission structure 2 can rotate, and a plurality of clamping blocks 4 are radially arranged on the inner ring of the output end of the transmission structure 2, the output end can drive each clamping block 4 to slide, a rotating chuck 5 is located at the inner ring of the output end, and one end of the relatively sliding clamping block 4 can be clamped to the outer periphery of one end of the rotating chuck 5, and a plurality of clamping blocks 4 are installed to the inner ring of the transmission structure 2, so as to reasonably utilize the equipment space and reduce the space occupied by the equipment.

[0033] The transmission structure 2 includes a worm 21 and a worm wheel 22, and the outer periphery of the worm 21 is rotatably connected to the inside of the placement box 1, one end of the worm 21 is fixedly connected to the output end of the driving device 3, one end of the worm wheel 22 is rotatably connected to the inside of the placement box 1 through a bearing, and the outer periphery of the worm 21 is meshed with the outer periphery of the worm wheel 22, a through hole is provided in the middle of the worm wheel 22, and a plurality of clamping blocks 4 are evenly distributed radially on the side walls of the through hole.

[0034] Each clamping block 4 includes a bottom plate 41 and a cover plate 42, and an adapter plate is installed at one end of the worm gear 22, and a plurality of mounting grooves 43 are radially arranged at the upper end of the adapter plate, the bottom plate 41 is fixedly installed in one mounting groove 43, and the cover plate 42 is detachably installed on the bottom plate 41, a first through hole is provided at one end of the bottom plate 41, and a baffle plate 44 is installed on the side wall of the first through hole, a card joint 45 is slidably connected in the first through hole, and a boss is provided on one side of the card joint 45, and the lower end of the boss can abut against the upper end of the baffle plate 44, a second through hole is provided at one end of the cover plate 42, the first through hole and the second through hole are coaxially arranged, and a T-shaped top bolt 46 is slidably installed in the first through hole, The upper end of the T-shaped top bolt 46 can be snapped into the upper side of the cover plate 42, and the lower end of the T-shaped top bolt 46 is threadedly connected to the upper end of the clamping joint 45. The clamping joint 45 can drive the T-shaped top bolt 46 to slide axially along the worm gear 22. The clamping joint 45 sliding axially can reduce the installation diameter of the equipment, and the clamping joint 45 is installed through the base plate 41 and the cover plate 42 for easy maintenance. A spring is arranged on the periphery of the T-shaped top bolt 46, and one end of the spring is fixedly connected to the periphery of the T-shaped top bolt 46, and the other end of the spring is fixedly connected to the cover plate 42 or the base plate 41. The spring is a floating elastic structure of the T-shaped top bolt 46 and the clamping joint 45 to improve the reliability of the device.

[0035] The rotating chuck 5 includes a chuck 51 . A plurality of clamping grooves 52 are evenly distributed along the circumferential direction on the periphery of the chuck 51 . The clamping grooves 52 correspond to the clamping joints 45 one by one. The clamping joints 45 can be clamped into the clamping grooves 52 .

[0036] The inner ring of the chuck 51 is provided with a spacer 53, and the spacer 53 is arranged concentrically with the chuck 51. A gap is arranged between the outer periphery of the spacer 53 and the inner ring of the chuck 51. A plurality of rollers 54 are arranged radially on the outer periphery of the spacer 53, and each roller 54 is located in the gap. A plurality of arc grooves 55 are arranged radially on the inner ring of the chuck 51, and each roller 54 corresponds to one arc groove 55. A plurality of through grooves are arranged radially on the side wall of the spacer 53, and each roller 54 is located in one through groove. The roller 54 passes through the arc groove 55. The surface rolling of the spacer 53 can move radially in the through groove. The multiple rollers 54 moving radially constitute the variable diameter structure of the inner ring of the spacer 53. The spacer 53 with the arc groove 55 is an opening and closing structure in which the periphery of the milling cutter handle is connected to the inner ring of the chuck 51. The rotary chuck 5 is easy to operate and can be opened and closed without disassembly and flipping. It can quickly switch between tightening and loosening, saving time. The arc groove 55 can generate a constant torque to ensure the accuracy and consistency of clamping.

[0037] The roller 54 rolls in the arc groove 55, and the arc groove 55 provides a path for the relative displacement of the roller 54. When each roller 54 slides to the bottom of the arc groove 55, the periphery of the roller 54 is located at the periphery of the spacer sleeve 53. At this time, a gap is left between the inner ring of the spacer sleeve 53 and the implementation component, and the milling cutter handle and the tool can be separated. When the chuck 51 is rotated, the roller 54 is in the through groove. At this time, the roller 54 rolls relative to the chuck 51, so that the roller 54 rolls along the arc groove 55. The periphery of the roller 54 gradually protrudes from the through groove and contacts the periphery of the milling cutter handle, so that the chuck 51, the roller 54 and the spacer sleeve 53 are clamped to the periphery of the milling cutter handle. At this time, the milling cutter handle and the tool are inseparable, and the peripheries of multiple rollers 54 act together on the periphery of the milling cutter handle and the inner ring of the chuck 51, so that the torque is stable, ensuring the clamping accuracy and consistency.

[0038] A cover plate 42 is respectively provided at the inner rings of both ends of the chuck 51 , and both ends of the spacer 53 are respectively installed to the inner ring of the chuck 51 through a cover plate 42 . The cover plate 42 is used to facilitate maintenance by the staff, to facilitate the removal of the spacer 53 , and to replace or adjust the roller 54 .

[0039] There are multiple embodiments for implementing the roller 54. The first embodiment of the roller 54 is a spherical structure, and the second embodiment of the roller 54 is a cylindrical structure, which satisfies that the outer periphery of the roller 54 can slide in the variable diameter structure.

[0040] In implementation, the side wall of the spacer 53 is provided with a plurality of working units along the axial direction, and each working unit comprises a plurality of through grooves evenly distributed along the radial direction, such as Figure 7 As shown, two working units are provided in this embodiment, and in order to reduce the processing accuracy and realize the rapid switching of opening and closing, the through slots on adjacent working units are staggered.

[0041] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An axial clamping jaw of a milling tool, characterized in that: The invention comprises a placement box (1), a transmission structure (2) is arranged inside the placement box (1), a driving device (3) is installed outside the placement box (1), an output end of the driving device (3) is connected to an input end of the transmission structure (2), the output end of the transmission structure (2) is rotatable, and a plurality of clamping blocks (4) are arranged radially on the inner ring of the output end of the transmission structure (2), the output end can drive each clamping block (4) to slide, a rotating chuck (5) is located on the inner ring of the output end, and one end of the relatively sliding clamping block (4) can be clamped to the outer periphery of one end of the rotating chuck (5).

2. The axial clamping jaw of a milling tool according to claim 1, characterized in that: The transmission structure (2) comprises a worm (21) and a worm wheel (22), wherein the periphery of the worm (21) is rotatably connected to the interior of the placement box (1), one end of the worm (21) is fixedly connected to the output end of the driving device (3), one end of the worm wheel (22) is rotatably connected to the interior of the placement box (1) via a bearing, and the periphery of the worm (21) is meshed with the periphery of the worm wheel (22), a through hole is provided in the middle of the worm wheel (22), and a plurality of pressing blocks (4) are evenly distributed along the radial direction on the side wall of the through hole.

3. The axial clamping jaw of a milling tool according to claim 2, characterized in that: Each pressing block (4) comprises a base plate (41) and a cover plate (42), and an adapter plate is installed at one end of the worm wheel (22), and a plurality of mounting grooves (43) are radially arranged at the upper end of the adapter plate, the base plate (41) is fixedly installed in one mounting groove (43), and the cover plate (42) is detachably installed on the base plate (41), a first through hole is provided at one end of the base plate (41), and a baffle plate (44) is installed on the side wall of the first through hole, a card joint (45) is slidably connected in the first through hole, and the card joint (45) A boss is provided on one side, and the lower end of the boss can abut against the upper end of the baffle (44); a second through hole is provided at one end of the cover plate (42); the first through hole and the second through hole are coaxially arranged; a T-shaped top bolt (46) is slidably installed in the first through hole, and the upper end of the T-shaped top bolt (46) can be snap-fitted to the upper side of the cover plate (42); the lower end of the T-shaped top bolt (46) is threadedly connected to the upper end of the snap joint (45); the snap joint (45) can drive the T-shaped top bolt (46) to slide axially along the worm gear (22).

4. The axial clamping jaw of a milling tool according to claim 3, characterized in that: A spring is arranged on the periphery of the T-shaped top bolt (46), one end of the spring is fixedly connected to the periphery of the T-shaped top bolt (46), and the other end of the spring is fixedly connected to the cover plate (42) or the bottom plate (41).

5. The axial clamping jaw of a milling tool according to claim 3, characterized in that: The rotary chuck (5) comprises a chuck (51), a plurality of clamping grooves (52) are evenly distributed along the circumferential direction on the periphery of the chuck (51), and the clamping grooves (52) correspond to the clamping joints (45) one by one, and the clamping joints (45) can be clamped into the clamping grooves (52).

6. The axial clamping jaw of a milling tool according to claim 5, characterized in that: A spacer sleeve (53) is arranged on the inner ring of the chuck (51), a gap is arranged between the outer periphery of the spacer sleeve (53) and the inner ring of the chuck (51), a plurality of rollers (54) are arranged radially on the outer periphery of the spacer sleeve (53), each roller (54) is located in the gap, a plurality of arc grooves (55) are arranged radially on the inner ring of the chuck (51), and each roller (54) corresponds to one arc groove (55), a plurality of through grooves are arranged radially on the side wall of the spacer sleeve (53), each roller (54) is located in one through groove, and the roller (54) can move radially along the spacer sleeve (53) in the through groove by rolling on the surface of the arc groove (55), and the plurality of radially moving rollers (54) constitute a variable diameter structure of the inner ring of the spacer sleeve (53), and the spacer sleeve (53) of the variable diameter structure is an opening and closing structure in which the outer periphery of the milling cutter handle is connected to the inner ring of the chuck (51).

7. The axial clamping jaw of a milling tool according to claim 5, characterized in that: The side wall of the spacer (53) is provided with a plurality of working units along the axial direction, and each working unit comprises a plurality of through grooves evenly distributed along the radial direction.

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