Bidirectional fine-adjustable finish milling cutter arbor

Abstract

The utility model relates to the technical field of lathe tools, in particular to a bidirectional fine-adjustable finish milling cutter arbor which comprises a cutter arbor body and an inner groove, the inner groove is formed in the outer edge of the cutter arbor body and is recessed towards the axis of the cutter arbor body, a blade module is arranged in the inner groove, and the blade module comprises a blade block movably installed in the inner groove. A radial driving piece and an axial driving piece are arranged in the inner groove; when the position and the angle of the blade block need to be finely adjusted, the first fine adjustment screw or the second fine adjustment screw is rotated, the first fine adjustment screw can drive the radial movable block to move in the radial direction when moving, and due to the fact that the radial movable block is elastically connected with the blade block, the radial position of the blade block can be adjusted by moving the first fine adjustment screw; the axial position of the blade block can be adjusted by moving the second fine adjustment screw; the axial position and the radial position of the blade block can be adjusted on one cutter, the blade block does not need to be detached, therefore, the precision and the smoothness of the cutter are improved, the diameter size can be adjusted, and the defects caused by diameter tolerance are reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of lathe tools, in particular to a bidirectional fine-adjustable precision milling cutter bar. Background Art

[0002] Milling is widely used in CNC machining, and tapers, chamfers, and fillets are common operations encountered during milling. Traditional taper, chamfer, and fillet processing requires manual operation, which is not only inefficient but also prone to angle instability, impacting product quality and production efficiency. Currently, taper, chamfer, and fillet processing is primarily performed on CNC lathes, and angle changes require operator programming and adjustment, which places high demands on both equipment and personnel.

[0003] Among them, Chinese patent application number 202323572556.1 discloses an adjustable forming milling tool, comprising a base, a column, and a toolholder assembly, wherein the column is arranged on the base, the column is provided with a receiving slot, the toolholder assembly is installed in the receiving slot, the toolholder assembly comprises a toolholder, a blade, an axial adjustment member, and a locking bolt, the blade is installed at one end of the toolholder, and the axial adjustment member is installed at the other end, the axial adjustment member is used to adjust the axial position of the toolholder on the column, the toolholder is provided with an elongated hole extending along the length of the toolholder, and the locking bolt passes through the end of the elongated hole and is connected to the column. By arranging the blade at the end of the toolholder, rapid chamfering or filleting can be achieved, improving processing efficiency, and the blade can be adjusted axially or radially according to the requirements of the workpiece to meet the processing needs of chamfering and filleting of different workpieces, thereby expanding the scope of use, reducing processing costs, simplifying adjustment, and improving production efficiency.

[0004] When using existing cutting tools, in order to increase processing accuracy, it is often necessary to fine-tune the tool position. Different processing shapes require different tool positions and tool angles. Most existing cutting tools can usually only be adjusted in a single direction of the tool, which has limitations. When the adjustment range is exceeded, the blade needs to be replaced, which greatly reduces efficiency. Utility Model Content

[0005] The purpose of the utility model is to provide a bidirectional fine-adjustable precision milling cutter bar in response to the deficiencies of the prior art.

[0006] To achieve the above purpose, the technical solution of the utility model is as follows:

[0007] A bidirectional fine-adjustable precision milling cutter bar comprises a cutter bar body, an inner groove whose outer edge is recessed toward the axis of the cutter bar body, a blade module being provided in the inner groove, the blade module comprising a blade block movably mounted in the inner groove; the inner groove being provided with a radial movable block moving radially along the cutter bar body and an axial movable block moving axially along the cutter bar body, the radial movable block and the axial movable block respectively elastically pressing the blade block;

[0008] The inner groove is provided with a radial driving member for driving the radial movable block to move radially and an axial driving member for driving the axial movable block to move axially;

[0009] The radial driving member includes a first fine-tuning screw radially arranged on the arbor body, the first fine-tuning screw is vertically connected to the radial movable block, the axial driving member includes a movable second fine-tuning screw, the second fine-tuning screw drives the axial movable block to move closer to or away from the blade block; the blade block can fine-tune the angle axially and radially along the arbor body in the inner groove.

[0010] Furthermore: the inner groove is concavely formed with a radial movable groove for radial movement of the radial movable block, and the tool rod body is formed with a first adjustment hole for radial movement of the first fine-tuning screw, the first adjustment hole is connected with the radial movable groove, and the first adjustment hole is perpendicular to the radial movable groove; when the first fine-tuning screw approaches the axis of the tool rod body along the first adjustment hole, the radial movable block located in the radial movable groove can move radially outward to adjust the radial angle of the blade block.

[0011] Furthermore: the number of the first adjustment holes is two, and the first adjustment holes are internal threaded holes.

[0012] Furthermore: a radially movable spring piece capable of elastically supporting the blade block is installed at the outer end of the radially movable block.

[0013] Furthermore: the inner groove is concavely formed with an axial movable groove for radial movement of the axial movable block, and the tool rod body is provided with a second adjustment hole for the second fine-tuning screw to be movably inserted, and the second adjustment hole is connected to the axial movable groove; when the second fine-tuning screw approaches the axis of the tool rod body along the second adjustment hole, the axial movable block located in the axial movable groove can move axially toward the blade block to adjust the axial angle of the blade block.

[0014] Furthermore: the second adjustment hole is arranged radially and tilted along the shank body.

[0015] Furthermore: the axial movable groove and the radial movable groove are both flush with the blade block.

[0016] Furthermore: the inner groove is radially formed with a connecting hole, a connecting rod is installed in the connecting hole, and the blade block is formed with a mounting hole coaxially aligned with the connecting hole and for the connecting rod to pass through.

[0017] Furthermore, the diameter of the mounting hole is larger than the diameter of the connecting hole, and the blade block can be moved radially or axially around the connecting rod to adjust the angle and position of the blade block.

[0018] Furthermore: the number of the inner grooves is more than two, and two adjacent inner grooves are arranged rotationally symmetrically about the axis of the shank body.

[0019] The beneficial effects of the present invention are as follows: when it is necessary to fine-tune the position and angle of the blade block, by rotating the first fine-tuning screw or the second fine-tuning screw, the first fine-tuning screw will drive the radial movable block to move radially when it moves, and since the radial movable block is elastically connected to the blade block, the radial position of the blade block can be adjusted by moving the first fine-tuning screw; similarly, when the second fine-tuning screw moves, it will drive the axial movable block to move axially, and since the axial movable block is elastically connected to the blade block, the axial position of the blade block can be adjusted by moving the second fine-tuning screw; the axial position and radial position of the blade block can be adjusted on one tool without disassembling the blade block, thereby improving the tool accuracy and finish, and being able to adjust the diameter size to reduce the disadvantages caused by diameter tolerance. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 Schematic diagram of the structure of the fine milling cutter bar.

[0021] Figure 2 Schematic diagram of the exploded structure of the fine milling cutter bar.

[0022] Reference numerals include:

[0023] 1-Tool holder body,

[0024] 10-blade module, 11-inner groove, 12-blade block, 13-axial movable block, 14-radial movable block,

[0025] 15-connecting hole, 16-connecting rod, 17-mounting hole,

[0026] 2- radial drive,

[0027] 21-first fine-tuning screw, 22-first adjustment hole, 23-radial movable spring, 24-radial movable slot,

[0028] 3-Axial drive parts,

[0029] 31 - second fine-tuning screw, 32 - second adjustment hole, 33 - axially movable spring piece, 34 - axially movable slot. DETAILED DESCRIPTION

[0030] The present invention is described in detail below with reference to the accompanying drawings.

[0031] like Figure 1-2As shown, a bidirectional fine-adjustable precision milling cutter bar includes a cutter bar body 1, an inner groove 11 whose outer edge is recessed toward the axis of the cutter bar body 1, and a blade module 10 is provided in the inner groove 11. The blade module 10 includes a blade block 12 movably mounted in the inner groove 11; the inner groove 11 is provided with a radial movable block 14 that moves radially along the cutter bar body 1 and an axial movable block 13 that moves axially along the cutter bar body 1, and the radial movable block 14 and the axial movable block 13 elastically press the blade block 12 respectively.

[0032] The inner groove 11 is provided with a radial driving member 2 for driving the radial movable block 14 to move radially, and an axial driving member 3 for driving the axial movable block 13 to move axially; the radial driving member 2 includes a first fine-tuning screw 21 radially arranged on the arbor body 1, and the first fine-tuning screw 21 is vertically connected to the radial movable block 14, and the axial driving member 3 includes a movable second fine-tuning screw 31, and the second fine-tuning screw 31 drives the axial movable block 13 to move closer to or away from the blade block 12; the blade block 12 can fine-tune the angle axially and radially along the arbor body 1 in the inner groove 11.

[0033] In this embodiment, when it is necessary to fine-tune the position and angle of the blade block 12, by rotating the first fine-tuning screw 21 or the second fine-tuning screw 31, the first fine-tuning screw 21 will drive the radial movable block 14 to move radially when it moves. Since the radial movable block 14 is elastically connected to the blade block 12, the radial position of the blade block 12 can be adjusted by moving the first fine-tuning screw 21; similarly, when the second fine-tuning screw 31 moves, it will drive the axial movable block 13 to move axially. Since the axial movable block 13 is elastically connected to the blade block 12, the axial position of the blade block 12 can be adjusted by moving the second fine-tuning screw 31; the axial position and radial position of the blade block 12 can be adjusted on one tool without disassembling the blade block 12, thereby improving the tool accuracy and finish, and being able to adjust the diameter size to reduce the disadvantages caused by the diameter tolerance.

[0034] Specifically, the inner groove 11 is concavely formed with a radial movable groove 24 for radial movement of the radial movable block 14, and the arbor body 1 is formed with a first adjustment hole 22 for radial movement of the first fine-tuning screw 21. The first adjustment hole 22 is connected to the radial movable groove 24, and the first adjustment hole 22 is perpendicular to the radial movable groove 24. When the first fine-tuning screw 21 approaches the axis of the arbor body 1 along the first adjustment hole 22, the radial movable block 14 located in the radial movable groove 24 can move radially outward to adjust the radial angle of the blade block 12. In this embodiment, when the position of the radial movable block 14 needs to be moved, by rotating the first fine-tuning screw 21, the first fine-tuning screw 21 cooperates with the first adjustment hole 22 and moves axially along the first adjustment hole 22, which can drive the radial movable block 14 in the radial movable groove 24 to move closer to or away from the blade block 12, thereby achieving radial position adjustment of the blade block 12.

[0035] Preferably, there are two first adjustment holes 22, and the first adjustment holes 22 are internal threaded holes. By rotating the first fine-tuning screw 21 to engage with the first adjustment hole 22 thread and moving along the axial direction of the hole, the position of the radial movable block 14 can be adjusted. After the radial movable block 14 moves radially in the radial movable groove 24, the radial position of the blade block 12 is adjusted.

[0036] Preferably, a radially movable spring piece 23 is installed at the outer end of the radially movable block 14, which can elastically resist the blade block 12; under the action of the radially movable spring piece 23, a buffering effect is provided between the radially movable block 14 and the blade block 12, and the blade block 12 will not be damaged when the position is adjusted, thereby effectively protecting the blade block 12.

[0037] The inner groove 11 is concavely formed with an axial movable groove 34 for radial movement of the axial movable block 13. The arbor body 1 is provided with a second adjustment hole 32 for the movably insertion of the second fine-tuning screw 31. The second adjustment hole 32 is connected to the axial movable groove 34. When the second fine-tuning screw 31 approaches the axis of the arbor body 1 along the second adjustment hole 32, the axial movable block 13 located in the axial movable groove 34 can be axially moved toward the blade block 12 to adjust the axial angle of the blade block 12. In this embodiment, when the position of the axial movable block 13 needs to be moved, by rotating the second fine-tuning screw 31, the second fine-tuning screw 31 cooperates with the second adjustment hole 32 and moves axially along the second adjustment hole 32, which can drive the axial movable block 13 in the axial movable groove 34 to move closer to or away from the blade block 12, thereby achieving axial position adjustment of the blade block 12.

[0038] Preferably, an axially movable spring piece 33 is installed at the outer end of the axially movable block 13, which can elastically resist the blade block 12; under the action of the axially movable spring piece 33, a buffering effect is provided between the axially movable block 13 and the blade block 12, and the blade block 12 will not be damaged when the position is adjusted, thereby effectively protecting the blade block 12.

[0039] The second adjustment hole 32 is arranged radially and tilted along the arbor body 1; the second adjustment hole 32 is an internal threaded hole, and the position of the axial movable block 13 can be adjusted by rotating the second fine-tuning screw 31 to engage with the second adjustment hole 32 thread and move axially along the hole. After the axial movable block 13 moves circumferentially in the circumferential movable groove, the axial position of the blade block 12 is adjusted.

[0040] It should be noted that the cross-sectional dimensions of the first fine-tuning screw 21 and the second fine-tuning screw 31 decrease from head to tail. Therefore, as the first fine-tuning screw 21 continuously approaches the radial movable block 14 along the first adjustment hole 22, it can squeeze the radial movable block 14 along the radial movable groove 24 toward the blade block 12. Similarly, the position of the axial movable block 13 can be adjusted in the same manner.

[0041] Preferably, the axial movable groove 34 and the radial movable groove 24 are both flush with the blade block 12. In this embodiment, it is ensured that the axial movable block 13 located in the axial movable groove 34 and the radial movable block 14 located in the radial movable groove 24 are flush with each other, thereby contacting the blade block 12 at the same time, and the radial or axial adjustment position of the blade block 12 can be achieved more accurately.

[0042] It should be noted that the inner groove 11 is also radially formed with a connecting hole 15, to which a connecting rod 16 is mounted. The blade block 12 is also formed with a mounting hole 17 coaxially aligned with the connecting hole 15, and the mounting hole 17 is for the connecting rod 16 to pass through; the connecting rod 16 is connected to the connecting hole 15. The diameter of the mounting hole 17 is larger than the diameter of the connecting hole 15, and the blade block 12 can be adjusted radially or axially around the connecting rod 16 to adjust the angle and position of the blade block 12. Because the diameter of the mounting hole 17 is larger than the diameter of the connecting hole 15, when the axial movable block 13 and the radial movable block 14 are adjusted in position, the blade block 12 can achieve axial or radial position adjustment through the gap between the mounting hole 17 and the connecting rod 16.

[0043] Furthermore, the number of inner grooves 11 is more than two, and two adjacent inner grooves 11 are arranged rotationally symmetrically about the axis of the tool bar body 1. In this embodiment, multiple inner grooves 11 are used, and corresponding blade modules 10 are arranged in the inner grooves 11, which further improves the efficiency during drilling.

[0044] In summary, it can be seen that the present invention has the above-mentioned excellent characteristics, which can enhance its performance unprecedented in the past and become a product with great practical value.

[0045] The above contents are only preferred embodiments of the present invention. For ordinary technicians in this field, according to the concept of the present invention, there may be changes in the specific implementation methods and application scope. The content of this specification should not be understood as limiting the present invention.

Claims

1. A bidirectional fine-adjustable precision milling cutter bar, comprising a bar body, an inner groove at the outer edge of the bar body recessed toward the axis of the bar body, characterized in that: The inner groove is provided with a blade module, which includes a blade block movably mounted in the inner groove; the inner groove is provided with a radial movable block that moves radially along the blade rod body and an axial movable block that moves axially along the blade rod body, and the radial movable block and the axial movable block respectively elastically press the blade block; The inner groove is provided with a radial driving member for driving the radial movable block to move radially and an axial driving member for driving the axial movable block to move axially; The radial driving member includes a first fine-tuning screw radially arranged on the arbor body, the first fine-tuning screw is vertically connected to the radial movable block, the axial driving member includes a movable second fine-tuning screw, the second fine-tuning screw drives the axial movable block to move closer to or away from the blade block; the blade block can fine-tune the angle axially and radially along the arbor body in the inner groove.

2. The bidirectional fine-adjustable precision milling cutter bar according to claim 1, characterized in that: The inner groove is concavely formed with a radial movable groove for radial movement of the radial movable block, and the tool rod body is formed with a first adjustment hole for radial movement of the first fine-tuning screw. The first adjustment hole is connected with the radial movable groove, and the first adjustment hole is perpendicular to the radial movable groove; when the first fine-tuning screw approaches the axis of the tool rod body along the first adjustment hole, the radial movable block located in the radial movable groove can move radially outward to adjust the radial angle of the blade block.

3. The bidirectional fine-adjustable precision milling cutter bar according to claim 2, characterized in that: There are two first adjustment holes, and the first adjustment holes are internal thread holes.

4. The bidirectional fine-adjustable precision milling cutter bar according to claim 3, characterized in that: The outer end of the radially movable block is provided with a radially movable spring piece capable of elastically supporting the blade block.

5. The bidirectional fine-adjustable precision milling cutter bar according to claim 4, characterized in that: The inner groove is concavely formed with an axial movable groove for radial movement of the axial movable block, and the tool rod body is provided with a second adjustment hole for movably inserting the second fine-tuning screw, and the second adjustment hole is connected to the axial movable groove; when the second fine-tuning screw approaches the axis of the tool rod body along the second adjustment hole, the axial movable block located in the axial movable groove can move axially toward the blade block to adjust the axial angle of the blade block.

6. The bidirectional fine-adjustable precision milling cutter bar according to claim 5, characterized in that: The second adjustment hole is arranged radially and tilted along the shank body.

7. The bidirectional fine-adjustable precision milling cutter bar according to claim 6, characterized in that: The axial movable groove and the radial movable groove are both flush with the blade block.

8. The bidirectional fine-adjustable precision milling cutter bar according to claim 1, characterized in that: The inner groove is further radially formed with a connecting hole, a connecting rod is installed in the connecting hole, and the blade block is formed with a mounting hole coaxially aligned with the connecting hole and for the connecting rod to pass through.

9. The bidirectional fine-adjustable precision milling cutter bar according to claim 8, characterized in that: The diameter of the mounting hole is larger than that of the connecting hole, and the blade block can be moved radially or axially around the connecting rod to adjust the angle and position of the blade block.

10. The bidirectional fine-adjustable precision milling cutter bar according to any one of claims 1 to 9, characterized in that: The number of the inner grooves is more than two, and two adjacent inner grooves are arranged in rotational symmetry with respect to the axis of the shank body.

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