A device for machining circular arcs of numerically controlled indexable inserts

Abstract

The present invention provides a device for circular arc processing of numerically controlled indexable inserts, which completes the circular arc processing of the tool tip and the negative chamfering of the special profile cutting edge by cooperating with an ordinary grinder, thereby ensuring the processing accuracy, and having a compact structure, taking up little space, and being convenient and flexible to use. A through hole is arranged at the center of the upper plate of the base, and a thrust ball bearing is arranged around the outer periphery of the upper surface of the through hole of the upper plate of the base, and the base also includes a mounting seat with a main shaft, and the main shaft is convex after passing through the through hole of the mounting seat, and the convex part of the main shaft is equipped with a deep groove ball bearing, and the threaded part of the main shaft convex to the inner ring of the deep groove ball bearing is equipped with a locking nut, and the upper part of the outer ring of the deep groove ball bearing is tightly attached to the lower surface of the upper plate, and the lower part of the outer ring of the deep groove ball bearing is supported on the upper surface of the clamping washer, and the clamping washer is fixed to the base through the first locking screw arranged around the base.

Description

Technical Field

[0001] The invention relates to the technical field of indexable tool processing, in particular to a device for numerically controlled indexable insert arc processing. Background Art

[0002] As an advanced tool, indexable tools have the advantages of high hardness, high durability, quick replacement, long tool life, and low tool use cost, and are widely used in cutting processing. With the rapid development of modern cutting technology, indexable tools continue to make innovations in materials and shapes. A very important part is reflected in the innovation of indexable blade shape, blade edge accuracy or blade edge treatment. The characteristics of indexable blades are becoming more and more complex. The existing processing equipment has a complex structure and cannot effectively ensure the tool tip arc processing accuracy and special surface edge negative chamfering. For this reason, there is an urgent need for a device that can directly cooperate with ordinary grinders to complete the processing. Summary of the invention

[0003] In response to the above problems, the present invention provides a device for circular arc processing of CNC indexable inserts, which cooperates with a common grinder to complete the circular arc processing of the tool tip and the negative chamfering of the cutting edge of a special profile, thereby ensuring the processing accuracy. The device has a compact structure, occupies little space, and is easy to use flexibly.

[0004] A device for circular arc processing of CNC indexable inserts, characterized in that it includes a base, a through hole is provided at the center of an upper plate of the base, a thrust ball bearing is arranged on the outer circumference of the upper surface of the through hole of the upper plate of the base, and it also includes a mounting seat with a main shaft, the main shaft convexes downward after passing through the through hole of the mounting seat, a deep groove ball bearing is sleeved on the convex part of the main shaft, a locking nut is sleeved on the threaded part of the main shaft convex from the inner ring of the deep groove ball bearing, the upper part of the outer ring of the deep groove ball bearing is tightly attached to the lower surface of the upper plate, the lower part of the outer ring of the deep groove ball bearing is supported on the upper surface of a clamping washer, and the clamping washer is secured by a ring The first locking screw of the cloth is fixed to the base, the mounting seat is tightly supported on the upper ring of the thrust ball bearing, the upper surface of the mounting seat is provided with a first plane straight line groove, the outer side of the mounting seat is provided with a side convex driving handle, the bottom lower convex of the adjusting tool seat is embedded in the first plane straight line groove, and is linearly movable along the first surface straight line groove, the upper surface of the adjusting tool seat is provided with a second plane straight line groove, the second plane straight line groove is arranged perpendicular to the first plane straight line groove, the bottom lower convex part of the tool fixture is embedded in the second plane straight line groove, and is linearly movable along the second straight line groove.

[0005] It is further characterized by:

[0006] The outer circumference of the thrust ball bearing is covered with a waterproof cover, which is fixed to the upper plate of the base to ensure that the entire structure is waterproof;

[0007] A first adjustment baffle is fixedly provided at one end of the mounting seat corresponding to the first plane linear groove, a first knurled screw is installed on the vertical plate of the first adjustment baffle, the screw position of the first knurled screw is threadedly connected to the threaded guide hole of the adjustment tool holder, and the first knurled screw drives the adjustment tool holder to move straight along the first plane linear groove;

[0008] A second adjustment baffle is provided at one end of the adjustment tool holder corresponding to the second plane linear groove, a second knurled screw is installed on the vertical plate of the second adjustment baffle, the screw position of the second knurled screw is threadedly connected to the threaded guide hole of the tool fixture, and the second knurled screw drives the tool fixture to move straight along the second plane linear groove;

[0009] The first knurled screw and the second knurled screw are both fine-pitch screws with an adjustment accuracy of 0.005 mm, which can effectively control the size of the processed arc and the center offset position;

[0010] The lower surface of the base is also provided with a plurality of lower convex keys, which are used to be fixed to the T-slot of the machine tool worktable to ensure the position accuracy of the installation and disassembly of the entire structure;

[0011] An angle adjustment limit block is fixedly installed on the outer end of one side of the mounting seat perpendicular to the straight groove of the first plane. The angle adjustment limit block is fixedly installed in the limit mounting hole of the mounting seat through the adjustment waist-shaped groove and bolts. The upper surface of the lower plate of the base is also surrounded by adjustment mounting holes, and the vertical locking screw is inserted into the adjustment mounting hole. A limit screw is also provided at the corresponding height of the vertical locking screw corresponding to the angle adjustment limit block, and the end face of the limit screw is used for limiting the rotation angle of the mounting seat;

[0012] The first plane straight groove and the second plane straight groove are both inverted T-shaped grooves, and the lower convex parts are corresponding inverted T-shaped structures to ensure stable and reliable straight-line travel.

[0013] After the present invention is adopted, the base is fixed on the machine tool workbench, the tool fixture moves linearly to the corresponding position along the second plane straight groove, and the adjusting tool seat moves linearly to the corresponding position along the first plane straight groove, then the tool fixture and the adjusting tool seat are locked in position, the indexable tool is clamped on the tool fixture, and the processing arc size and position of the indexable tool are adjusted by the second plane straight groove and the first plane straight groove, and then the rotation angle size of the mounting seat is roughly adjusted by adjusting the waist-shaped groove, and then the rotation angle size is finely adjusted by the limit screw, and the driving handle is rotated to drive the tool to be processed to make an arc motion relative to the tool body on the machine tool to complete the processing of the product. It cooperates with an ordinary grinder to complete the arc processing of the tool tip and the negative chamfer of the special surface cutting edge, thereby ensuring the processing accuracy, and the structure is compact, occupies little space, and is convenient and flexible to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0015] Figure 2 It is a schematic diagram of the structure of the front view and cross-sectional view of the present invention;

[0016] Figure 3 It is a schematic diagram of the three-dimensional explosion structure of the present invention;

[0017] Figure 4 This is the first case processed by this device;

[0018] Figure 5 This is the second case processed by this device;

[0019] Figure 6 This is the third case processed by this device;

[0020] Figure 7 This is the fourth case processed by this device;

[0021] The names corresponding to the serial numbers in the figure are as follows:

[0022] Base 1, upper plate 101, lower plate 102, through hole 2, thrust ball bearing 3, spindle 4, mounting seat 5, deep groove ball bearing 6, locking nut 7, clamping washer 8, first locking screw 9, first plane linear groove 10, driving handle 11, adjusting tool seat 12, second plane linear groove 13, tool fixture 14, first adjusting baffle 15, first knurled screw 16, second adjusting baffle 17, second knurled screw 18, lower convex key 19, angle adjustment limit block 20, adjusting waist-shaped groove 21, bolt 22, limit mounting hole 23, adjusting mounting hole 24, vertical locking screw 25, limit screw 26, waterproof cover 27. DETAILED DESCRIPTION

[0023] A device for CNC indexable insert arc processing, see Figure 1-Figure 3:It includes a base 1, a through hole 2 is provided at the center of an upper plate 101 of the base 1, and a thrust ball bearing 3 is arranged around the upper surface of the through hole 2 of the upper plate 101 of the base 1. It also includes a mounting seat 5 with a main shaft 4, a main shaft 4 is convexed at the lower center of the lower part of the mounting seat 5, and the main shaft 4 convexes downward after passing through the through hole 2, and a deep groove ball bearing 6 is arranged and sleeved on the convex part of the main shaft 4, and a locking nut 7 is sleeved on the thread of the inner ring of the deep groove ball bearing 6 on the main shaft 4 convex, and the upper part of the outer ring of the deep groove ball bearing 6 is tightly attached to the lower surface of the upper plate 101, and the lower part of the outer ring of the deep groove ball bearing 6 is supported on the upper surface of a clamping washer 8, and the clamping washer 8 is tightened by a first locking screw arranged around the washer. 9 is fixedly mounted on the base 1, the mounting seat 5 is tightly supported on the upper ring of the thrust ball bearing 3, a first plane linear groove 10 is opened on the upper surface of the mounting seat 5, a side convex driving handle 11 is arranged on the outer side of the mounting seat 5, the bottom convex part of the adjusting tool seat 12 is embedded in the first plane linear groove 10, and is arranged to move linearly along the first plane linear groove 10, a second plane linear groove 13 is opened on the upper surface of the adjusting tool seat 12, the second plane linear groove 13 is arranged perpendicular to the first plane linear groove 10, the bottom convex part of the tool fixture 14 is embedded in the second plane linear groove 13, and is arranged to move linearly along the second linear groove 13.

[0024] The outer periphery of the thrust ball bearing 3 is provided with a waterproof cover 27, which is fixed to the upper plate 101 of the base 1 to ensure that the entire structure is waterproof;

[0025] A first adjustment baffle 15 is fixedly disposed at one end of the mounting seat 5 corresponding to the first plane linear groove 10, and a first knurled screw 16 is mounted on a vertical plate of the first adjustment baffle 15. The screw position of the first knurled screw 16 is threadedly connected to the threaded guide hole of the adjustment tool holder 12, and the first knurled screw 16 drives the adjustment tool holder 12 to move straight along the first plane linear groove 10;

[0026] A second adjustment 17 is provided at one end of the adjustment tool holder 12 corresponding to the second plane straight groove 13, and a second knurled screw 18 is installed on the vertical plate of the second adjustment baffle 17. The screw position of the second knurled screw 18 is threadedly connected to the threaded guide hole of the tool fixture 14, and the second knurled screw 18 drives the tool fixture 14 to move straight along the second plane straight groove 13;

[0027] The first knurled screw 16 and the second knurled screw 18 both have fine pitch threads, and the adjustment accuracy reaches 0.005mm, which can effectively control the size of the processed arc and the offset position of the center of the circle;

[0028] The lower surface of the base 1 is also provided with a plurality of lower convex keys 19, which are used to be fixed to the T-slot of the machine tool work surface to ensure the position accuracy of the installation and disassembly of the entire structure;

[0029] An angle adjustment limit block 20 is fixedly mounted on the outer end of one side of the mounting seat 5 perpendicular to the first plane straight groove 10. The angle adjustment limit block 20 is fixedly mounted on the limit mounting hole 23 of the mounting seat 5 through the adjustment waist-shaped groove 21 and the bolt 22. The upper surface of the lower plate 102 of the base 1 is also surrounded by adjustment mounting holes 24. The vertical locking screw 25 is inserted into the adjustment mounting hole 24. A limit screw 26 is also arranged at the corresponding height of the vertical locking screw 25 corresponding to the angle adjustment limit block 20. The end surface of the limit screw 26 is used to limit the rotation angle of the mounting seat 5.

[0030] The first plane linear groove 10 and the second plane linear groove 13 are both inverted T-shaped grooves, and the lower convex parts are corresponding inverted T-shaped structures, ensuring the stability and reliability of the linear movement.

[0031] Its working principle is simple. The base is fixed on the machine tool workbench. The fine-pitch screw is driven by the thread to make the tool fixture move linearly along the second plane straight groove to the corresponding position, and the adjustment tool holder moves linearly along the first plane straight groove to the corresponding position. Then the tool fixture and the adjustment tool holder are locked in position, and the indexable tool is clamped on the tool fixture. The processing arc size and position of the indexable tool are adjusted by the second plane straight groove and the first plane straight groove. Then, the rotation angle of the mounting seat is roughly adjusted by adjusting the waist-shaped groove, and the rotation angle is finely adjusted by the limit screw. By rotating the driving handle, the tool to be processed is driven to make an arc motion relative to the tool body on the machine tool to complete the processing of the product. It cooperates with an ordinary grinder to complete the arc processing of the tool tip and the negative chamfer of the special surface cutting edge to ensure the processing accuracy. It has a compact structure, occupies little space, and is easy to use flexibly.

[0032] Figure 4-Figure 7 These are processing cases 1 to 4 of this device.

[0033] Its beneficial effects are as follows:

[0034] 1. The device has a compact structure and occupies little space, and can be flexibly applied to various small tool grinders or other grinders;

[0035] 2. To process different arc sizes, fine pitch thread adjustment is adopted, and the adjustment accuracy can reach 0.005mm, which can effectively control the size of the processed arc and the offset position of the center of the circle;

[0036] 3. The rotating axis can rotate 0°-360° arbitrarily, and the arc with an angle within the range of 0°-180° can be adjusted arbitrarily without interfering with other parts of the machine tool;

[0037] 4. The combination of deep groove ball bearings and thrust ball bearings improves the flexibility of the rotational motion and ensures that the device can still process normally and stably even if it is subjected to great grinding resistance in the lateral and longitudinal directions during the rotation process, and is not prone to wear;

[0038] 5. The short body of the device effectively avoids the vibration that may be caused by lateral force. The high-strength and high-rigidity structure can ensure the processing accuracy and also has a good guarantee for the surface finish of the product.

[0039] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0040] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A device for CNC indexable insert arc processing, characterized in that: The invention comprises a base, wherein a through hole is arranged at the center of an upper plate of the base, and a thrust ball bearing is arranged on the outer periphery of the upper surface of the through hole of the upper plate of the base, and a mounting seat with a main shaft is also included, and the main shaft is convex downward after passing through the through hole of the mounting seat, and a deep groove ball bearing is sleeved on the convex part of the main shaft, and a locking nut is sleeved on the threaded part of the main shaft convex below the inner ring of the deep groove ball bearing, and the upper part of the outer ring of the deep groove ball bearing is tightly attached to the lower surface of the upper plate, and the lower part of the outer ring of the deep groove ball bearing is supported on the upper surface of a clamping washer, and the clamping washer is fixed to the mounting seat by a first locking screw arranged in a ring. The base, the mounting seat is tightly supported on the upper ring of the thrust ball bearing, the upper surface of the mounting seat is provided with a first plane linear groove, the outer side of the mounting seat is provided with a side convex driving handle, the bottom lower convex of the adjusting knife seat is embedded in the first plane linear groove, and is linearly movable along the first plane linear groove, the upper surface of the adjusting knife seat is provided with a second plane linear groove, the second plane linear groove is arranged perpendicular to the first plane linear groove, the bottom lower convex part of the tool fixture is embedded in the second plane linear groove, and is linearly movable along the second linear groove; The outer periphery of the thrust ball bearing is provided with a waterproof cover, and the waterproof cover is fixedly mounted on the upper plate of the base; A first adjustment baffle is fixedly provided at one end position of the mounting seat corresponding to the first plane straight line groove, and a first knurled screw is installed on the vertical plate of the first adjustment baffle. The screw position of the first knurled screw is threadedly connected to the threaded guide hole of the adjusting tool seat, and the first knurled screw drives the adjusting tool seat to move straight along the first plane straight line groove.

2. A device for CNC indexable insert arc processing according to claim 1, characterized in that: A second adjustment baffle is provided at one end of the adjustment tool seat corresponding to the second planar straight groove, and a second knurled screw is installed on the vertical plate of the second adjustment baffle. The screw position of the second knurled screw is threadedly connected to the threaded guide hole of the tool holder, and the second knurled screw drives the tool holder to move straight along the second planar straight groove.

3. A device for CNC indexable insert arc processing as claimed in claim 2, characterized in that: The first knurled screw and the second knurled screw both have fine pitch threads.

4. A device for CNC indexable insert arc processing according to claim 1, characterized in that: The lower surface of the base is also provided with a plurality of lower convex keys, and the lower convex keys are used for being fixedly mounted on the T-slot of the working table of the machine tool.

5. The device for CNC indexable insert arc processing according to claim 1, characterized in that: An angle adjustment limit block is fixedly installed at the outer end of one side of the mounting seat perpendicular to the straight groove of the first plane. The angle adjustment limit block is fixed to the limit mounting hole of the mounting seat through the adjusting waist-shaped groove and bolts. The upper surface of the lower plate of the base is also surrounded by adjustment mounting holes, and the vertical locking screw is inserted into the adjustment mounting hole. A limit screw is also provided at the corresponding height of the vertical locking screw corresponding to the angle adjustment limit block. The end face of the limit screw is used to limit the rotation angle of the mounting seat.

6. The device for CNC indexable insert arc processing according to claim 1, characterized in that: The first planar linear groove and the second planar linear groove are both inverted T-shaped grooves, and the lower convex parts are both corresponding inverted T-shaped structures.

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