High-precision positioning metal cutting tool

Abstract

The utility model discloses a high-precision positioning metal cutting tool which comprises a tool bit used for cutting, a first screw rod used for driving the tool bit to move transversely, a fixing seat used for guiding, a positioning assembly used for adjusting the length of the tool bit and a tool bar assembly used for adjusting the cutting angle of the tool bit. One end of the first screw rod is fixedly connected to the center position of one end of the tool bit, the other end of the first screw rod penetrates through the center position of the fixing base to be transversely connected to the interior of the positioning assembly in a threaded mode, and the fixing base is arranged at one end of the positioning assembly and connected to the positioning assembly through a screw. According to the numerical control numerical control machine tool, the threaded sleeve can drive the first threaded rod to drive the tool bit to move front and back, and therefore the machining length of the tool bit is adjusted.

Description

Technical Field

[0001] The utility model relates to the technical field of metal cutting tools, in particular to a high-precision positioning metal cutting tool. Background Art

[0002] A turning tool is a tool used for turning, with a cutting part, used to process rotating workpieces on a lathe. The working part of the turning tool includes the blade, a structure to break or roll up the chips, a space for chip removal or storage, a channel for cutting fluid, and other structural elements.

[0003] During processing, the length of the tool bar of existing metal cutting tools cannot be adjusted, and it is difficult to lock and position the tool bar after adjustment, resulting in poor stability. In addition, there is no steering and corresponding locking mechanism at the end of the cutting tool, which makes it impossible to adjust the processing direction of the tool head and is not flexible enough when used. Utility Model Content

[0004] The utility model aims to overcome the problems existing in the above-mentioned prior art that the length of the tool rod cannot be adjusted, and it is difficult to lock and position the tool rod after adjustment, resulting in poor stability, and no steering and corresponding locking mechanism are provided at the end of the cutting tool, resulting in the tool head being unable to adjust the processing direction and being not flexible enough when used.

[0005] A high-precision positioning metal cutting tool is proposed, comprising a first screw for driving a cutter head to move laterally, a cutter head for cutting, a fixed seat for guiding, a positioning assembly for adjusting the length of the cutter head and a guide rod for adjusting the cutting angle of the cutter head, one end of the first screw is fixedly connected to the center position of one end of the cutter head, the other end of the first screw passes through the center position of the fixed seat and is laterally threadedly connected to the interior of the positioning assembly, the fixed seat is arranged at one end of the positioning assembly and is connected to the positioning assembly by screws, and the tool rod assembly is arranged at the other end of the positioning assembly and the tool rod assembly and the positioning assembly are hinged to each other.

[0006] In the technical solution of the utility model, the first screw is rotatably connected to the inside of the threaded sleeve, and the front end of the first screw is connected to the cutter head. Therefore, when the length of the cutter head needs to be adjusted, it is only necessary to rotate the threaded sleeve forward, and the threaded sleeve will drive the cutter head forward through the thread when rotating forward. Conversely, when the cutter head needs to be retracted, it is only necessary to rotate the threaded sleeve reversely, and the threaded sleeve will drive the cutter head backward through the thread when rotating reversely. After the length of the cutter head is adjusted, it can be locked and positioned by the first fixing nut, so as to solve the shortcomings mentioned in the technical background that the length of the cutter rod cannot be adjusted, and it is difficult to lock and position the cutter rod after adjustment, resulting in poor stability.

[0007] When the processing angle of the cutter head needs to be adjusted, it is only necessary to turn the second fixing nut in the reverse direction until the second fixing nut is out of contact with the tool rod, and then rotate the tool holder. When the cutter head is rotated to the desired angle, it is only necessary to turn the second fixing nut in the forward direction until the second fixing nut is in contact with the tool rod, and until the second fixing nut can prevent the tool holder and the cutter head from continuing to rotate. When the cutter head rotates, the rotation angle of the cutter head can be observed by the pointer to avoid the cutter head from rotating too much. This is used to solve the problem mentioned in the technical background that there is no steering and corresponding locking mechanism at the end of the cutting tool, which makes the cutter head unable to adjust the processing direction and is not flexible enough when used.

[0008] The preferred technical solution of the utility model is that the positioning assembly includes a tool holder, a guide rod, a threaded sleeve, a second screw, a first fixing nut and a hinge shaft. The fixing seat is fixedly connected to one end of the tool holder by a screw. A slot is provided at the center of the tool holder in the length direction of the tool holder. The threaded sleeve is arranged on the inner wall of the slot and the two ends of the threaded sleeve are rotatably connected to the fixing seat and the tool holder respectively. The guide rod has two groups, which are respectively located on both sides of the threaded sleeve and one end of the two groups of guide rods passes through the fixing seat and is connected to the tool head. One end of the two groups of guide rods is slidably connected to the inside of the tool holder. The second screw passes through The first screw is threadedly connected to the inside of the threaded sleeve, and the threaded sleeve is rotatably connected to the tool holder and the fixed seat. Therefore, when the threaded sleeve rotates, the threaded sleeve will drive the first screw to move forward and backward. The front end of the first screw is fixedly connected with a cutter head. Therefore, when the first screw is driven by the threaded sleeve to move forward and backward, the first screw will synchronously drive the cutter head to move forward and backward.

[0009] Preferably, the upper surfaces of the two sets of guide rods are provided with length scale lines. When the staff drives the cutter head to move forward and backward through the threaded sleeve, the guide rods will move forward and backward with the cutter head. Therefore, when the staff manually drives the cutter head to move forward and backward, they can observe the length of the cutter head moving forward and backward according to the length scale lines on the guide rods.

[0010] Preferably, the tool rod assembly comprises a tool rod, a pointer and a second fixing nut. Arc-shaped grooves are provided at the upper and lower ends of the tool rod. The pointer and the second fixing nut are respectively slidably connected inside the arc-shaped grooves at the upper and lower ends of the tool rod. The tool rod assembly is hinged to the positioning assembly. Therefore, when the angle needs to be adjusted, the positioning assembly can drive the tool head to rotate with the hinge point of the tool rod assembly and the positioning assembly as the center, thereby adjusting the cutting angle of the tool head.

[0011] Preferably, the upper surface of the tool rod is provided with arc scale lines, and when the tool head is driven by the positioning assembly, the rotation angle of the tool head can be observed through the arc scale lines to avoid excessive rotation angle of the tool head.

[0012] Preferably, the pointer is insertably connected to the upper surface of one end of the tool holder, and the second fixing nut is perpendicular to the pointer and threadedly connected to the lower surface of one end of the tool holder. When the cutter head rotates, the pointer will rotate with the positioning assembly along with the cutter head, and the pointer will always point to the arc scale line when rotating to assist the staff in observation.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] The utility model drives the first screw rod to move the cutter head back and forth through a threaded sleeve, so as to adjust the processing length of the cutter head, and one end of the cutter seat is fixedly connected to a hinge shaft, and the hinge shaft is rotatably connected to the inside of the cutter rod. Therefore, when it is necessary to change the processing angle of the cutter head, the cutter seat can rotate around the hinge shaft as the center, and the cutter head will be driven to rotate when the cutter seat rotates, thereby changing the cutting angle of the cutter head. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the three-dimensional structure of a metal cutting tool with high-precision positioning;

[0016] Figure 2 A schematic diagram of the back structure of a metal cutting tool with high-precision positioning;

[0017] Figure 3 A schematic diagram of the positioning component structure of a high-precision positioning metal cutting tool (the tool holder is a whole, and a piece is removed to show the internal structure);

[0018] Figure 4 A schematic diagram of the structure coordination of a positioning assembly and a tool bar assembly of a high-precision positioning metal cutting tool (the tool holder is a whole, and a piece is removed to show the internal structure);

[0019] Figure 5 for Figure 4 A magnified schematic diagram of point A;

[0020] Figure 6 A schematic diagram of the cooperation structure of a tool holder, a pointer and a second fixing nut of a high-precision positioning metal cutting tool;

[0021] Figure 7 It is a schematic diagram of a tool bar structure of a metal cutting tool with high-precision positioning;

[0022] In the figure: 1-cutter head, 2-first screw, 3-fixed seat, 4-positioning assembly, 41-cutter seat, 42-guide rod, 43-threaded sleeve, 44-second screw, 45-first fixing nut, 46-articulated shaft, 47-length scale line, 5-cutter rod assembly, 51-cutter rod, 52-pointer, 53-second fixing nut, 54-arc scale line. DETAILED DESCRIPTION

[0023] The following will be combined with the attached embodiment of the present utility model Figure 1-7 , the technical solutions in the embodiments of the utility model are described in detail.

[0024] like Figure 1-2 As shown, a high-precision positioning metal cutting tool comprises a cutter head 1 for cutting, a first screw rod 2 for driving the cutter head 1 to move laterally, a fixing seat 3 for guiding, a positioning assembly 4 for adjusting the length of the cutter head 1 and a tool rod assembly 5 for adjusting the cutting angle of the cutter head 1. One end of the first screw rod 2 is fixedly connected to the center position of one end of the cutter head 1. Therefore, when the first screw rod 2 is driven by the fixing assembly to move forward and backward, the first screw rod 2 will drive the cutter head 1 to move forward and backward synchronously. The other end of the first screw rod 2 passes through the center position of the fixing seat 3 and is laterally threadedly connected to the inside of the positioning assembly 4. The threaded sleeve 43 of the positioning assembly 4 is threadedly connected to the first screw 2, and one end of the threaded sleeve 43 is rotatably connected to the inside of the positioning assembly 4. Therefore, when the cutter head 1 needs to move forward and backward to adjust the position, it only needs to rotate the threaded sleeve 43 to drive the first screw rod 2 to move forward and backward. When the first screw rod 2 moves forward and backward, it will adjust the distance between the cutter head 1 and the fixing seat 3.

[0025] like Figure 1-2 As shown, the fixing seat 3 is arranged at one end of the positioning component 4 and is connected to the positioning component 4 by screws, one end of the threaded sleeve 43 is rotatably connected to the inside of the positioning component 4, and the other end of the threaded sleeve 43 is rotatably connected to the fixing seat, and the fixing seat 3 is fixedly connected to one end of the positioning component 4 by screws. Therefore, when the threaded sleeve 43 is damaged and needs to be replaced, it is only necessary to remove the fixing seat 3 for replacement. The tool rod assembly 5 is arranged at the other end of the positioning component 4 and the tool rod assembly 5 and the positioning component 4 are hinged to each other. When the cutter head 1 needs to cut metal, the tool holder clamps the tool rod assembly 5 to fix the cutter head 1. At the same time, because the tool rod assembly 5 and the positioning component 4 are hinged to each other, when the cutting angle of the cutter head 1 needs to be adjusted, there is no need to loosen the tool holder to let the tool holder loosen the tool rod 51. When the tool rod 51 is fixed by the tool holder, the positioning assembly 4 can be manually rotated, and the positioning assembly 4 will drive the cutter head 1 to rotate when rotating, thereby adjusting the cutting angle of the cutter head 1.

[0026] like Figure 3-5As shown, the positioning assembly 4 includes a tool holder 41, a guide rod 42, a threaded sleeve 43, a second screw 44, a first fixing nut 45, a hinge shaft 46 and a length scale line 47. The fixed seat 3 is fixedly connected to one end of the tool holder 41 by a screw, and the two ends of the threaded sleeve 43 are rotatably connected to the fixed seat 3 and the tool holder 41 respectively. Therefore, the threaded sleeve 43 will be mounted on the fixed seat 3 and the tool holder 41 inside the slot of the tool holder 41, so the threaded sleeve 43 will not fall from the inside of the tool holder 41 during rotation. The center position of the tool holder 41 is grooved according to the length direction of the tool holder 41. The threaded sleeve 43 is arranged on the inner wall of the groove and the two ends of the threaded sleeve 43 are rotatably connected to the fixed seat 3 and the tool holder 41 respectively. One end of the first screw 2 passes through the center position of the fixed seat 3 and the tool holder 41 and is rotatably connected to the inside of the tool holder 41. The threaded sleeve 43 is sleeved on the first screw 2, and the first screw 2 is threadedly connected to the threaded sleeve 43.

[0027] like Figure 3-5 As shown, when the threaded sleeve 43 rotates forward, the threaded sleeve 43 will drive the first screw 2 to move forward laterally through the thread. At this time, the distance between the cutter head 1 and the fixed seat 3 will begin to slowly increase. When the threaded sleeve 43 rotates in the opposite direction, the threaded sleeve 43 will drive the first screw 2 to move backward laterally through the thread. At this time, the distance between the cutter head 1 and the fixed seat 3 will begin to slowly decrease. There are two groups of guide rods 42, which are respectively located on both sides of the threaded sleeve 43, and one end of the two groups of guide rods 42 passes through the fixed seat 3 and is connected to the cutter head 1. Length scale lines 47 are provided on the two groups of guide rods 42. One end of the two groups of guide rods 42 is slidably connected to the inside of the cutter seat 41. Therefore, when the cutter head 1 is driven to move forward by the first screw 2, the two groups of guide rods 42 will move forward with the cutter head 1 to guide the cutter head 1. The staff can observe the moving distance of the cutter head 1 according to the length scale line 47. At the same time, when the cutter head 1 cuts metal, the two guide rods 42 will support the cutter head 1 together with the first screw 2.

[0028] like Figure 3-5As shown, when the cutter head 1 cuts metal, the guide rod 42 will be stressed together with the first screw rod 2 to avoid deformation or even breakage of the first screw rod 2 due to excessive stress. The second screw rod 44 passes through the cutter seat 41 and is laterally fixedly connected to a group of guide rods 42. The cutter seat 41 is provided with a slide groove on one side of the second screw rod 44. The second screw rod 44 is laterally arranged in the slide groove and one end of the second screw rod 44 is fixedly connected to the guide rod 42. Therefore, when the guide rod 42 is driven by the cutter head 1 to move forward and backward, the guide rod 42 will drive the second screw rod 44 to move forward and backward synchronously. The first fixing nut 45 is located on one side of the cutter seat 41 and is threadedly connected to the second screw rod 44. When the staff observes that the position of the cutter head 1 moves to the desired position through the length scale line 47, they only need to rotate the first fixing nut 45 in the forward direction until the first fixing nut 45 and the cutter seat 41 are about to conflict. At this time, the first fixing nut 45 will prevent the guide rod 42 from continuing to move forward through the friction between the cutter seat 41.

[0029] like Figure 3-5 As shown, since the guide rod 42 is fixedly connected to the cutter head 1, when the guide rod 42 cannot move forward or backward, the cutter head 1 cannot move forward or backward either. At this time, the cutter head 1 will be fixed in position by the first fixing nut 45 and the guide rod 42. If the cutter head 1 wants to adjust its position forward or backward, it only needs to flip the first fixing nut 45. The friction between the first fixing nut 45 and the cutter seat 41 disappears, and the cutter head 1 can move horizontally forward or backward. The hinge shaft 46 is vertically rotatably connected to the inside of the cutter rod assembly 5 and the hinge shaft 46 is fixedly connected to the other end of the cutter seat 41. Therefore, when the cutting angle of the cutter head 1 needs to be adjusted, it is only necessary to rotate the cutter seat 41. When the cutter seat 41 rotates, it will rotate with the hinge point between the hinge shaft 46 and the cutter rod 51 as the center of the circle. During the rotation, the cutter seat 41 will drive the cutter head 1 to rotate, so the cutting angle of the cutter head 1 will change when the cutter seat 41 rotates.

[0030] like Figure 6-7As shown, the knife bar assembly 5 includes a knife bar 51, a pointer 52 and a second fixing nut 53. The upper and lower ends of the knife bar 51 are provided with arc grooves. The pointer 52 and the second fixing nut 53 are respectively slidably connected to the arc grooves at the upper and lower ends of the knife bar 51. The pointer 52 is inserted into the upper surface of one end of the knife seat 41. The second fixing nut 53 is perpendicular to the pointer 52 and is threadedly connected to the lower surface of one end of the knife seat 41. Therefore, when the knife seat 41 rotates, the knife seat 41 will synchronously drive the pointer 52 and the second fixing nut 53 to rotate. The upper surface of the knife bar 51 is provided with arc scale lines 54, and the pointer 52 During rotation, it will always point to the arc scale line 54 to help the staff determine the processing angle of the cutter head 1. After the cutter head 1 has adjusted the cutting angle, the second fixing nut 53 can be twisted in the forward direction. The second fixing nut 53 will gradually come into contact with the tool rod 51 during forward rotation. After the second fixing nut 53 is tightened, the tool holder 41 and the cutter head 1 will stop rotating. Similarly, when the cutter head 1 and the tool holder 41 need to be rotated, it is only necessary to rotate the second fixing nut 53 in the reverse direction. The second fixing nut 53 will gradually lose contact with the tool rod 51 during reverse rotation, and the cutter head 1 and the tool holder 41 can now rotate.

[0031] The movement process of this embodiment is as follows: when it is necessary to adjust the length of the cutter head 1, firstly, screw the first fixing nut 45 in the reverse direction until the first fixing nut 45 is out of contact with the cutter seat 41, and then rotate the threaded sleeve 43 in the forward direction. The threaded sleeve 43 will drive the cutter head 1 to move forward when rotating in the forward direction. When the cutter head 1 moves forward, the staff can observe the forward movement distance of the cutter head 1 according to the length scale line 47 on the guide rod 42. When the length of the cutter head 1 is adjusted, it is only necessary to rotate the first fixing nut 45 in the forward direction again until the first fixing nut 45 is in contact with the cutter seat 41 to prevent the guide rod 42 from moving forward any further. When it is necessary to retract the cutter head 1, it is only necessary to unscrew the first fixing nut 45 and then rotate the threaded sleeve 43 in the reverse direction. The threaded sleeve 43 will retract the cutter head 1 through the first screw rod 2 when rotating in the reverse direction.

[0032] When the cutting angle of the cutter head 1 needs to be adjusted, it is only necessary to screw the second fixing nut 53 in the reverse direction until the second fixing nut 53 is out of contact with the cutter rod 51, and then rotate the cutter seat 41. The cutter seat 41 will drive the pointer 52 to rotate together when rotating. Therefore, the staff can observe the rotation angle of the cutter seat 41 and the cutter head 1 according to the direction of the pointer 52 and the comparison between the pointer 52 and the arc scale line 54. When the cutter head 1 is rotated to the desired angle, it is only necessary to screw the second fixing nut 53 in the forward direction until the second fixing nut 53 is in contact with the cutter rod 51, and until the second fixing nut 53 can prevent the cutter seat 41 and the cutter head 1 from continuing to rotate.

[0033] The above embodiments are only for illustrating the technical idea of ​​the present utility model, and cannot be used to limit the protection scope of the present utility model. Any changes made on the basis of the technical solution in accordance with the technical idea proposed by the present utility model shall fall within the protection scope of the present utility model.

Claims

1. A high-precision positioning metal cutting tool, characterized in that: The invention comprises a cutting head (1), a first screw rod (2) for driving the cutting head (1) to move laterally, a fixing seat (3) for guiding, a positioning assembly (4) for adjusting the length of the cutting head (1), and a tool rod assembly (5) for adjusting the cutting angle of the cutting head (1), wherein one end of the first screw rod (2) is fixedly connected to the center position of one end of the cutting head (1), the other end of the first screw rod (2) passes through the center position of the fixing seat (3) and is laterally threadedly connected to the inside of the positioning assembly (4), the fixing seat (3) is arranged at one end of the positioning assembly (4) and is connected to the positioning assembly (4) by means of screws, and the tool rod assembly (5) is arranged at the other end of the positioning assembly (4), and the tool rod assembly (5) and the positioning assembly (4) are hinged to each other.

2. A high-precision positioning metal cutting tool according to claim 1, characterized in that: The positioning assembly (4) comprises a knife seat (41), a guide rod (42), a threaded sleeve (43), a second screw rod (44), a first fixing nut (45) and a hinge shaft (46); the fixing seat (3) is fixedly connected to one end of the knife seat (41) by means of a screw; a slot is provided at the center of the knife seat (41) along the length direction of the knife seat (41); the threaded sleeve (43) is arranged on the inner wall of the slot and the two ends of the threaded sleeve (43) are rotatably connected to the fixing seat (3) and the knife seat (41) respectively; the guide rod (42) has two groups of threaded sleeves (43) and two groups of threaded sleeves (43) respectively disposed on the inner wall of the slot and two groups of threaded sleeves (43) are rotatably connected to the fixing seat (3) and the knife seat (41) respectively; The two guide rods (43) are connected to the cutter head (1) at two sides and one end of the two guide rods (42) passes through the fixed seat (3) and one end of the two guide rods (42) is slidably connected to the inside of the cutter seat (41), the second screw rod (44) passes through the cutter seat (41) and is laterally fixedly connected to one guide rod (42), the first fixing nut (45) is located on one side of the cutter seat (41) and is threadedly connected to the second screw rod (44), the hinge shaft (46) is vertically rotatably connected to the inside of the cutter rod assembly (5) and the hinge shaft (46) is fixedly connected to the other end of the cutter seat (41).

3. A high-precision positioning metal cutting tool according to claim 2, characterized in that: The upper surfaces of the two groups of guide rods (42) are both provided with length scale lines (47).

4. A high-precision positioning metal cutting tool according to claim 2, characterized in that: The knife bar assembly (5) comprises a knife bar (51), a pointer (52) and a second fixing nut (53). The knife bar (51) is provided with arc-shaped grooves at both upper and lower ends. The pointer (52) and the second fixing nut (53) are respectively slidably connected inside the arc-shaped grooves at the upper and lower ends of the knife bar (51).

5. A high-precision positioning metal cutting tool according to claim 4, characterized in that: The upper surface of the knife rod (51) is provided with arc scale lines (54).

6. A high-precision positioning metal cutting tool according to claim 4, characterized in that: The pointer (52) is plug-connected to the upper surface of one end of the knife seat (41), and the second fixing nut (53) is perpendicular to the pointer (52) and is threadedly connected to the lower surface of one end of the knife seat (41).

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