CN211161976U

CN211161976U - Numerical control knife rest

Info

Publication number: CN211161976U
Application number: CN201922150635.0U
Authority: CN
Inventors: 王一帆; 刘伢; 王迪
Original assignee: Wenling Wenchang Cnc Machine Tool Equipment Co ltd
Current assignee: Wenling Wenchang Cnc Machine Tool Equipment Co ltd
Priority date: 2019-12-04
Filing date: 2019-12-04
Publication date: 2020-08-04
Anticipated expiration: 2029-12-04

Abstract

The utility model relates to a numerical control knife rest, it includes the blade holder, rotates the turret of connection on the blade holder, drives turret pivoted actuating mechanism, the turret is the tetragonal type, set up annular mounting groove on the circumference lateral wall of turret, a plurality of screw holes have been seted up at the top of turret, and a plurality of screw holes are along the circumference lateral wall evenly distributed of turret, the surface that the mounting groove is close to the blade holder is for placing the face, be equipped with four antiskid groove of group on placing the face, four antiskid groove of group set up along the length direction of four sides of turret respectively, and every antiskid groove of group comprises the recess that is parallel to each other by twice, and the recess in adjacent two sets of antiskid groove communicates each other on the corresponding angle of turret. The utility model discloses have the increase and place the frictional force between face and the cutter, reduce the cutter and place gliding possibility on the face, make the more accurate effect of clamping of cutter.

Description

Numerical control knife rest

Technical Field

The utility model belongs to the technical field of the technique of digit control machine tool and specifically relates to a numerical control knife rest is related to.

Background

The numerical control tool rest is the most common auxiliary device of the numerical control lathe, and can enable the numerical control lathe to finish various and even all machining processes in one-time clamping of a workpiece so as to shorten the auxiliary time of machining and reduce errors caused by multiple times of installation of the workpiece in the machining process, thereby improving the machining efficiency and the machining precision of the machine tool.

At present, as shown in fig. 1, there is a numerical control tool rest, which includes a base, a turret 2 rotatably connected to the base, and a driving mechanism 3 for driving the turret 2 to rotate, the turret 2 is square, an annular mounting groove 4 is formed on a circumferential side wall of the turret 2, a plurality of threaded holes 21 circumferentially arranged along the tool rest are formed at a top of the turret 2, and the threaded holes 21 are communicated with the mounting groove 4. At most, one cutter can be respectively installed in four directions of the cutter tower 2, and the cutter is clamped on the cutter tower 2 through a compression bolt. When the tool is changed, the tool turret 2 is rotated by 90 degrees through the driving mechanism 3 to change the tool.

The above prior art solutions have the following drawbacks: because the cutter need carry out the clamping through clamp bolt when fixing on turret 2, clamp bolt is in contact with the cutter after, when clamp bolt continues to screw up with fixed cutter, the cutter can receive the revolving force of clamp bolt transmission, and 4 inner walls of mounting groove of turret 2 have been polished for steadily placing the cutter, make the surface of mounting groove 4 smooth, the cutter skids on turret 2 under the revolving force effect very easily, make the clamping of cutter accurate inadequately, influence follow-up machining precision.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art exists, one of the purposes of the utility model is to provide a numerical control knife rest, it has the more accurate advantage of clamping cutter.

The above utility model discloses an above-mentioned utility model purpose can realize through following technical scheme: the utility model provides a numerical control knife rest, includes the blade holder, rotates the turret of connection on the blade holder, drives turret pivoted actuating mechanism, the turret is the tetragonal type, set up annular mounting groove on the circumference lateral wall of turret, a plurality of screw holes have been seted up at the top of turret, and a plurality of screw holes are along the circumference lateral wall evenly distributed of turret, the surface that the mounting groove is close to the blade holder is for placing the face, be equipped with four groups antiskid groove on placing the face, four groups antiskid groove sets up along the length direction of four sides of turret respectively, and every group antiskid groove comprises the recess that is parallel to each other by two, and the recess in two sets of adjacent antiskid grooves communicates each other on the corresponding angle of turret.

Through adopting above-mentioned technical scheme, form anti-skidding line through setting up the recess on placing the face, especially the face of placing on the turret corner is because two sets of adjacent recesses are crisscross each other for the frictional force between the face of placing of this position and the cutter is bigger, can reduce the gliding possibility of cutter on placing the face, when clamping the cutter with clamp bolt, will twist the screw hole that is located the corner with first clamp bolt earlier, this clamp bolt presss from both sides tight cutter with placing the face, subsequent clamp bolt's twist is little to the influence of cutter, thereby make the clamping of cutter more accurate.

The present invention may be further configured in a preferred embodiment as: the four corners of the turret are respectively provided with a positioning mechanism, the positioning mechanism comprises a baffle, the baffle is positioned on the side wall of the corresponding corner of the turret, the four baffles are respectively positioned on the four side walls of the turret, one end of the baffle is hinged on the corresponding side wall of the turret, the other end of the baffle deviates from the cutter holder and is higher than the placing surface, and the baffle is fixed on the side wall of the turret through bolts.

By adopting the technical scheme, when the width of the cutter is the same as that of the placing surface at one side, the baffle and the groove bottom wall of the mounting groove just clamp the cutter, so that the cutter cannot rotate when the compression bolt is screwed down, and the cutter can be accurately positioned; when the width of the cutter is smaller than that of the placing surface, the baffle can also reduce the rotating amplitude of the cutter and reduce the installation deviation of the cutter; when the width of the cutter is too large, the baffle is turned downwards, so that the cutter can be pressed onto the bottom wall of the mounting groove from one side of the groove opening of the mounting groove to be positioned.

The present invention may be further configured in a preferred embodiment as: the positioning mechanism further comprises fixed blocks, sliding blocks and springs, the four fixed blocks are respectively fixed on the placing surfaces located on the four sides of the turret, the fixed blocks and the corresponding baffles are respectively located on the two sides of the corresponding angle of the turret, the sliding blocks are located between the corresponding fixed blocks and the corresponding baffles, the sliding blocks are connected to the placing surfaces in a sliding mode, and the springs are connected between the corresponding fixed blocks and the corresponding sliding blocks and have a movement trend towards one side of the corresponding baffles.

Through adopting above-mentioned technical scheme, be less than the cutter of placing the face width to the width, the sliding block pushes up the cutter to corresponding baffle under the effect of spring on, makes the length direction of cutter can follow the length direction setting of baffle, and the cutter drives down and still need overcome the elasticity of spring when rotating at clamp bolt for the cutter is more difficult to take place to rotate, further improves the installation accuracy of cutter.

The present invention may be further configured in a preferred embodiment as: the sliding block is provided with two convex blocks on one side facing the base, the two convex blocks are respectively positioned in two grooves on the corresponding side placing surface, and the sliding block slides along the grooves through the convex blocks.

Through adopting above-mentioned technical scheme, the slip of sliding block receives the restriction of two recesses, makes the difficult appearance skew of removal of sliding block, and the sliding block can be sufficient and the cutter contact towards the terminal surface of baffle to on pushing away the baffle with the cutter is stable.

The present invention may be further configured in a preferred embodiment as: the sliding block is characterized in that an inserting hole is formed in a placing surface between the fixed block and the corresponding baffle, the inserting hole is located on a sliding path of the sliding block, the inserting hole is close to the corresponding fixed block, an inserting rod penetrates through the sliding block, the length of the inserting rod is larger than the sum of the height of the sliding block and the depth of the inserting hole, and when the sliding block passes through the inserting hole, the inserting rod falls into the inserting hole.

By adopting the technical scheme, before the cutter is placed on the placing surface or the cutter is taken down from the placing surface, the sliding block is fixed on the placing surface through the inserting rod, so that the sliding block cannot interfere with the cutter mounting and taking; the inserting rod is pulled out again when the cutter needs to be clamped again, the sliding block continues to slide, and the inserting rod slides on the placing surface along with the sliding block.

The present invention may be further configured in a preferred embodiment as: the positions of the plug holes are as follows: when the plug rod is inserted into the corresponding plug hole, the surface of the sliding block facing the corresponding baffle is flush with the bottom wall of the mounting groove facing the corresponding baffle.

Through adopting above-mentioned technical scheme, when the sliding block was fixed, the sliding block can be as the extension of mounting groove diapire, makes the width be greater than the cutter of placing the face width when supporting at mounting groove diapire, and the cutter can contact more areas, and is better to the effect of pressing of supporting of cutter.

The present invention may be further configured in a preferred embodiment as: the fixed block is fixed on the placing surface through a bolt.

Through adopting above-mentioned technical scheme, can carry out the adjustment of fixed block thickness according to the length of cutter, make the cutter keep away from the one end of tool bit and support on the fixed block, make the cutter be difficult for sliding along the recess.

To sum up, the utility model discloses a following at least one useful technological effect:

1. the grooves are formed in the placing surface, so that the roughness of the placing surface is increased, the friction force between the placing surface and the cutter is improved, and the cutter is not easy to rotate in the mounting process;

2. through setting up positioning mechanism, carry out more stable location to the cutter, further reduce the cutter and appear the pivoted possibility in the installation.

Drawings

FIG. 1 is a schematic view of the overall structure of the prior art;

FIG. 2 is a schematic view of the entire structure of the embodiment;

FIG. 3 is an enlarged partial schematic view of portion A of FIG. 2;

FIG. 4 is an enlarged partial schematic view of portion B of FIG. 2;

FIG. 5 is a schematic structural diagram of a slider in the embodiment.

In the figure, 1, a tool apron; 2. a turret; 21. a threaded hole; 3. a drive mechanism; 4. mounting grooves; 5. placing the noodles; 51. a groove; 52. inserting holes; 6. a positioning mechanism; 61. a baffle plate; 62. a fixed block; 63. a slider; 631. a bump; 64. a spring; 65. a plug rod.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Referring to fig. 2, for the utility model discloses a numerical control knife rest, including blade holder 1 that has the inner chamber, rotate the turret 2 of connection on blade holder 1, drive turret 2 pivoted actuating mechanism 3, turret 2 is the square, has seted up annular mounting groove 4 on the circumference lateral wall of turret 2, and a plurality of screw holes 21 have been seted up at the top of turret 2, and a plurality of screw holes 21 are along the circumference lateral wall evenly distributed of turret 2, and all have screw hole 21 on 2 four corners of turret, and all screw holes 21 all communicate with mounting groove 4. The driving mechanism 3 is composed of a motor, a worm wheel and a worm, the worm wheel and the worm are all located in the inner cavity of the tool apron 1, the worm wheel is coaxially connected with the tool turret 2, the worm is meshed with the worm wheel and is rotationally connected in the inner cavity of the tool apron 1, the motor is located outside the tool apron 1, and an output shaft of the motor is meshed with the worm.

Referring to fig. 2, the surface of the mounting groove 4 close to the tool apron 1 is a placing surface 5, and four sets of anti-slip grooves are arranged on the placing surface 5 and respectively arranged along the length direction of the four side edges of the turret 2. Each set of anti-slip grooves is formed by two parallel grooves 51, and the grooves 51 in two adjacent sets of anti-slip grooves are communicated with each other at corresponding corners of the turret 2. And four corners of the tool turret 2 are respectively provided with a positioning mechanism 6 for limiting the movement of the tool. The four positioning mechanisms 6 are switched by rotating 90 degrees along with the tool turret 2 like a tool. Referring to fig. 4, a plug hole 52 is provided between two grooves 51 of the same set of anti-slip grooves, and four plug holes 52 are respectively close to four corners of the placing surface 5.

Referring to fig. 3 and 4, the positioning mechanism 6 includes a baffle 61, a fixed block 62, a sliding block 63 and a spring 64, the baffle 61 is located on the side wall of the corresponding corner of the turret 2, and the four baffles 61 are respectively located on the four side walls of the turret 2, one end of the baffle 61 is hinged on the corresponding side wall of the turret 2 close to the tool apron 1, and the other end of the baffle 61 can face the side of the tool apron 1 or the side away from the tool apron 1 and block on the side of the placing surface 5. When the end of the blocking plate 61 remote from the hinge point is placed toward the side remote from the tool holder 1, the blocking plate 61 is fixed to the side wall of the tool tower 2 by bolts to maintain this state for a long time. The fixed blocks 62 are fixed on the placing surface 5 through bolts, the fixed blocks 62 and the baffle 61 in the same positioning mechanism 6 are respectively positioned on two sides of the corresponding angle of the turret 2, and the fixed blocks 62 are opposite to the side wall of the baffle 61. The socket is located between the mounting block 62 and the corresponding stop 61 and adjacent to the mounting block 62. With reference to fig. 5, two projections 631 are provided on the side of the sliding block 63 facing the base, the two projections 631 are respectively located in the two grooves 51 on the corresponding side placing surface 5, the sliding block 63 slides along the grooves 51 through the projections 631, the sliding block 63 is located between the corresponding fixed block 62 and the baffle 61, and the spring 64 is connected between the corresponding fixed block 62 and the corresponding sliding block 63 and always pushes the sliding block 63 to the baffle 61 side. The sliding block 63 is provided with an inserting rod 65 in a penetrating mode, the length of the inserting rod 65 is larger than the sum of the height of the sliding block 63 and the depth of the inserting hole 52, and the diameter of the inserting rod 65 is matched with the inserting port. As the slide block 63 moves, the plugging lever 65 also slides along the placement surface 5, and the sliding path of the plugging lever 65 passes directly above the corresponding plugging hole 52. When the plug rod 65 passes through the plug hole 52 and falls into the plug hole 52, the surface of the sliding block 63 facing the corresponding baffle plate 61 is flush with the bottom wall of the mounting groove 4 facing the corresponding baffle plate 61.

The implementation principle of the embodiment is as follows: when the width of cutter is not more than the width of placing surface 5, with baffle 61 to the top upset of tool turret 2 to fix through the bolt, sliding block 63 passes through insertion rod 65 to be fixed on placing surface 5, and changes fixed block 62 according to the whole length of cutter. Then the cutter is placed on the placing surface 5, one end of the cutter far away from the cutter head is abutted against the fixed block 62 of the adjacent positioning mechanism 6, the insertion rod 65 on the sliding block 63 on one side of the cutter is pulled up, the sliding block 63 is abutted against the corresponding baffle plate 61 under the action of the spring 64, and then the tightening of the compression bolts in sequence along the length direction of the cutter from the bolt holes on the corners is started. When the width of the tool is larger than that of the placing surface 5, the baffle 61 is placed towards the tool holder 1 again, the sliding block 63 is fixed again, and the worker screws the tool into the compression bolt while pushing the tool against the bottom wall of the mounting groove 4.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. The utility model provides a numerical control knife rest, includes blade holder (1), rotates turret (2), drive turret (2) pivoted actuating mechanism (3) of connection on blade holder (1), turret (2) is the tetragonal type, annular mounting groove (4) have been seted up on the circumference lateral wall of turret (2), a plurality of screw holes (21) have been seted up at the top of turret (2), and the circumference lateral wall evenly distributed of turret (2) is followed in a plurality of screw holes (21), its characterized in that: the surface of the mounting groove (4) close to the tool apron (1) is a placing surface (5), four groups of anti-skidding grooves are arranged on the placing surface (5), the four groups of anti-skidding grooves are respectively arranged along the length direction of the side edges of the four sides of the turret (2), each group of anti-skidding grooves are formed by two parallel grooves (51), and the grooves (51) in the two adjacent groups of anti-skidding grooves are mutually communicated on the corresponding corners of the turret (2).

2. A numerically controlled tool holder according to claim 1, wherein: be equipped with positioning mechanism (6) on the four corners of sword tower (2) respectively, positioning mechanism (6) include baffle (61), baffle (61) are located on the lateral wall of the corresponding angle of sword tower (2), and four baffles (61) are located respectively on four lateral walls of sword tower (2), the one end of baffle (61) articulates on the corresponding lateral wall of sword tower (2), and the other end of baffle (61) deviates from blade holder (1) and is higher than and places face (5) setting, baffle (61) pass through the bolt fastening on sword tower (2) lateral wall.

3. A numerically controlled tool holder according to claim 2, wherein: the positioning mechanism (6) further comprises fixed blocks (62), sliding blocks (63) and springs (64), the four fixed blocks (62) are respectively fixed on the placing surfaces (5) on the four sides of the cutter tower (2), the fixed blocks (62) and the corresponding baffle plates (61) are respectively located on the two sides of the corresponding angle of the cutter tower (2), the sliding blocks (63) are located between the corresponding fixed blocks (62) and the corresponding baffle plates (61), the sliding blocks (63) are connected on the placing surfaces (5) in a sliding mode, and the springs (64) are connected between the corresponding fixed blocks (62) and the corresponding sliding blocks (63) and have a moving trend towards one side of the corresponding baffle plates (61) to the sliding blocks (63).

4. A numerically controlled tool holder according to claim 3, wherein: the side, facing the base, of the sliding block (63) is provided with two protruding blocks (631), the two protruding blocks (631) are respectively located in two grooves (51) in the corresponding side placing surface (5), and the sliding block (63) slides along the grooves (51) through the protruding blocks (631).

5. A numerically controlled tool holder according to claim 3, wherein: the positioning device is characterized in that an inserting hole (52) is formed in a placing surface (5) between the fixed block (62) and the corresponding baffle (61), the inserting hole (52) is located on a sliding path of the sliding block (63), the inserting hole (52) is close to the corresponding fixed block (62), an inserting rod (65) penetrates through the sliding block (63), the length of the inserting rod (65) is larger than the sum of the height of the sliding block (63) and the depth of the inserting hole (52), and when the sliding block (63) passes through the inserting hole (52), the inserting rod (65) falls into the inserting hole (52).

6. A numerically controlled tool holder according to claim 5, wherein: the positions of the plug holes (52) are as follows: when the plug-in rod (65) is inserted into the corresponding plug-in hole (52), the surface of the sliding block (63) facing the corresponding baffle (61) is flush with the bottom wall of the mounting groove (4) facing the corresponding baffle (61).

7. A numerically controlled tool holder according to claim 3, wherein: the fixing block (62) is fixed on the placing surface (5) through bolts.