machining tool

Abstract

The present invention provides a machining tool that operates smoothly, has high accuracy and precision, can handle loads from small to large, can fix the tilt direction, improve the centering performance of the tilted shaft, and significantly improve the wear of the tilt support structure. The machining tool of the present invention includes an upper shaft (1) attached to the upper level device, through which torque is transmitted; a tilting device (3) connected to the end of the upper shaft (1), which includes a fixed yoke (3a) and a tilting yoke (3b), and is provided with a pin (3dx) that rotates the tilting yoke (3b) in one direction and a pin (3dy) that rotates the tilting yoke (3b) in a direction opposite to the one direction; a main drive shaft (4) having an upper end provided with a tilt plate (7) connected to the tilting yoke (3b); a retainer (5) inserted into the end of the main drive shaft (4), the retainer (5) having a cutting tool (6) attached thereto; and a tilt support structure (5) in contact with the bottom surface of the tilt plate (7) for supporting the tilted tilt plate (7) through steel balls (12).

Description

Technical Field

[0001] This invention relates to a machining tool, specifically to a machining tool that enables the retainer of a deburring tool to perform stable, accurate, and high-precision operation even when subjected to load changes from small to large. It can fix the tilt direction of the drive shaft of the machining tool, improve the centering performance of the drive shaft, and significantly improve the wear resistance of the tilt support structure of the machining tool. Background Technology

[0002] The applicant of this invention disclosed a processing tool for deburring in Patent Document 1 (Japanese Unexamined Patent Application Publication No. 2005-349549). In Patent Document 1, Embodiment 3 of the disclosed processing tool includes a universal joint 96. The present application… Figure 15 This embodiment is illustrated. (Reference) Figure 15 A pin-type inclined support structure 30 is provided at the end portion of the universal joint 96. This inclined support structure 30 includes a pin box 31 in which 12 pins 32 are arranged in a circle. Each pin 32 is configured to move via a spring 33 disposed within a hole. The pin 32 contacts a pressure receiving plate 41 at its tip and presses downward onto the plate 41. The pressure receiving plate 41 tilts as the retainer 6 tilts. If the pressure receiving plate 41 tilts, pins 32 on one side protrude while pins 32 on the other side retract, causing the plate 41 to press against the upper part of the tilted retainer 6. The inclined support structure 30 is provided with the pin box 31, which is located deep within the machining tool. This makes replacing the pin box 31 cumbersome, inhibits the enlargement of the diameter of the pins 32 and springs 33, and limits the number of pins 32 that can be installed.

[0003] The end of pin 32 is spherically shaped and presses downwards against pressure receiving plate 41. If retainer 6 tilts, pressure receiving plate 41 also tilts, causing friction between pin 32 and pressure receiving plate 41. Furthermore, due to the time difference between the start of tilting of retainer 6 and the start of rotation of pressure receiving plate 41, friction occurs between pin 32 and pressure receiving plate 41. As a result, pin 32 experiences wear. (Reference) Figure 16 (a) Each end of pin 32 is spherical when it is first manufactured, while the reference... Figure 16 (b) Each end of pin 32 is worn and flattened. The pressure receiving plate 41 is rubbed by pin 32, thus forming grooves on plate 41. If each end of pin 32 is worn flat, its end will get stuck in the groove on plate 41 when the pin is pressed against it. This hinders the smooth operation of the machining tool. Furthermore, the wear of the pin increases the frequency of parts replacement, thus requiring a significant amount of labor for parts replacement. Additionally, Figure 15The tilted support structure 30 in the design exhibits poor reversibility (i.e., centering performance) after the machining tool is tilted, because even after the pressure receiving plate is tilted, the pins on the loaded side and the opposite unloaded pins press against the pressure receiving plate.

[0004] Existing technical documents

[0005] Patent documents

[0006] Patent Document 1: Japanese Unexamined Patent Application No. 2005-349549 Summary of the Invention

[0007] Technical issues

[0008] The present invention is proposed to solve the above-mentioned problems, and the purpose of the present invention is to provide a machining tool that can still perform stable, accurate and high-precision operation when the retainer is subjected to load changes from small to large. It can fix the tilt direction of the drive shaft of the machining tool, improve the centering performance of the drive shaft, and significantly improve the wear resistance of the tilt support structure of the machining tool.

[0009] Solution to the problem

[0010] According to one embodiment of the present invention, the machining tool includes an upper shaft 1, a tilting device 3, a main drive shaft 4, and a tilting support structure 15. The upper shaft 1 is attached to a main machine and transmits torque through the shaft 1. The tilting device 3, connected to the end side of the upper shaft 1, includes a fixed yoke 3a, a tilting yoke 3b, a pin 3dx, and a pin 3dy, wherein the tilting yoke 3b rotates about the pin 3dx in one direction, and rotates about the pin 3dy in a direction orthogonal to the aforementioned direction. The main drive shaft 4 includes a tilting plate 7 at the upper end of the shaft 4, wherein the tilting plate 7 is connected to the tilting yoke 3b. A retainer 5 is inserted into the end side of the main drive shaft 4, and a cutting tool 6 is attached to the retainer 5. The tilting support structure 15 contacts the bottom surface of the tilting plate 7 to support the tilted tilting plate 7 using steel balls 12.

[0011] The tilting device 3 includes a positioning screw 21'. If the positioning screw 21' is in the operating state (open state), the tilting yoke 3b is restricted to rotating in one direction; if the positioning screw 21' is in the non-operating state (closed state), the tilting yoke 3b can tilt in all circumferential directions.

[0012] The inclined support structure 15 is housed within the lower cover 14b. The inclined support structure 15 includes a support plate 9, which has multiple holes 13, steel balls 12, a circular plate 11, a spring 10, and a step 13a. The steel balls 12, the circular plate 11, and the spring 10 are inserted into each hole 13, and the step 13a is located in each hole 13. When an initial load is applied to the spring 10, the circular plate 11 will not rise above the step 13a.

[0013] The inclined support structure 15 is replaced as a component, which includes a support plate 9, a steel ball 12, a circular plate 11, a spring 10, and a lower cover 14b.

[0014] The lower cover 14b includes a base 14ba and a cap 14bb, and only the spring can be replaced by removing the cap 14bb.

[0015] The inclined support structure 15 includes an adjusting disc 22 that contacts the bottom side of each spring 10, and a pin 23 fixed at one end to the adjusting disc 22, the other end of the pin 23 protruding from a vertical elongated hole in the cap 14bb to the outside of the cap 14bb. The adjusting disc 22 is screwed to the base 14ba. By rotating the cap 14bb on the ball groove 24, the adjusting disc 22 can be rotated via the pin 23, thereby moving the adjusting disc 22 up and down to change the length of the spring 10, and thus adjusting the initial load of the spring 10.

[0016] The inclined support structure 15 includes an adjusting disc 22 that contacts the underside of each spring 10. The adjusting disc 22 is screwed to a cap 14bb. By rotating the cap 14bb on the ball groove 24, the adjusting disc 22 can be rotated, thereby moving the adjusting disc 22 up and down, and thus adjusting the initial load of the spring 10.

[0017] The upper shaft 1 includes an air passage 8. Air supplied into the air passage 8 passes through an inclined device 3 disposed within the upper cover 14a and is released to the outside via the gap between the lower cover 14b and the main drive shaft 4.

[0018] Beneficial technical effects of the present invention

[0019] The machining tool according to claim 1 of the present invention includes an inclined support structure comprising a plurality of steel balls that contact and support the inclined plate at its lower side. The steel balls significantly reduce friction with the inclined plate. The steel balls 12 are manufactured with high sphericity tolerances, which provides high rotational and wear resistance to achieve smooth operation of the machining tool. The inclined support structure is disposed at the lower side of the inclined plate for easier replacement.

[0020] As described in claim 2, if the locating screw is in the operating state (open state), the rotation of the tilting yoke is restricted to one direction, while if the locating screw is in the non-operating state (closed state), the tilting yoke can tilt in all directions. Therefore, the tilting of the cutting tool in all circumferential directions or in one direction can be controlled by a single machining tool. This feature is suitable for deburring operations that require tilting in one direction.

[0021] As described in claim 3, the tilting support structure elastically supports the tilting plate, causing a spring to compress a steel ball inserted into a hole in the support plate, protruding it outwards. An initial load is applied to the spring, such that the tilting plate tilts only when the load applied to the cutting tool exceeds this initial load. Since the circular plate does not rise above the step set within the hole, it does not push the steel ball into contact with the tilting plate, thereby improving the centering performance of the main drive shaft.

[0022] As described in claim 4, the inclined support structure can be replaced as a single component, wherein the component includes the support plate, steel ball, circular plate, spring, and lower cover. This significantly reduces the time and effort required for replacement compared to replacing springs one by one.

[0023] As claimed in claim 5, the lower cover includes a base and a cap, wherein the cap is configured to be removable, which allows for easy replacement of only the spring. The spring can be replaced by removing the cap even when the lower cover is attached to the upper cover.

[0024] As described in claim 6, an adjustment disc is provided for adjusting the initial load of the spring. This allows the initial load of the spring to be adjusted by rotating the cap once. The magnitude of the applied load can be determined by the position of the pin protruding outside the cap.

[0025] As described in claim 7, an adjustment disc is provided for adjusting the initial load of the spring. This allows the initial load of the spring to be adjusted by rotating the cap once. The magnitude of the applied load can be determined by the position of the mark on the cap on a scale.

[0026] As described in claim 8, air can be supplied from the device into the air passage and released outward through the gap between the lower cover and the main drive shaft, i.e., air purging. This prevents fine particles from entering the interior of the machining tool. Air purging is superior to using a corrugated dust cover because the repulsive force generated by the expansion and contraction of the corrugated dust cover according to the operation of the retainer can affect the performance of the retainer. Attached Figure Description

[0027] Figure 1 According to one embodiment of the present invention, a schematic diagram of the internal structure of a machining tool is shown;

[0028] Figure 2 It shows Figure 1 A schematic diagram showing the main drive shaft, retainer, and cutting tool after tilting;

[0029] Figure 3 It shows along Figure 1 The sectional view of the BB line shown;

[0030] Figure 4 An external view of the tilting device is shown;

[0031] Figure 5 (a)- Figure 5 (c) illustrates an exemplary configuration of the tilting device. Wherein, Figure 5 (a) shows the case where the tilting yoke can tilt in all circumferential directions; Figure 5 (b) shows a central block fixed to a fixed yoke, through which the tilting yoke is restricted to tilting in one direction; and, Figure 5 (c) illustrates the operation of the machining tool by switching the positioning screw between a state in which the tilting yoke can tilt in all circumferential directions and a state in which the tilting yoke is restricted to tilting in one direction;

[0032] Figure 6 An enlarged schematic diagram of the section of the inclined support structure equipped with steel balls is shown;

[0033] Figure 7 A plan view of the inclined support structure is shown;

[0034] Figure 8 (a) and Figure 8 (b) shows an operational schematic diagram of the inclined support structure, wherein... Figure 8 (a) shows the tilted plate in its untilted state. Figure 8 (b) shows the tilted state of the inclined plate;

[0035] Figure 9 As shown Figure 1 The diagram shows the airflow inside the machining tool.

[0036] Figure 10 (a) and (b) show schematic diagrams illustrating how the machining tool operates when the cutting tool is subjected to a load; wherein, Figure 10 (a) shows the main drive shaft 4, retainer 5, and cutting tool 6 in a stationary state. Figure 10 (b) shows the state of the main drive shaft 4, retainer 5 and cutting tool 6 after they have moved;

[0037] Figure 11A schematic diagram illustrating how the inclined support structure can be replaced as a component;

[0038] Figure 12 A schematic diagram showing how to replace only the springs of the inclined support structure;

[0039] Figure 13 A schematic diagram of a device for adjusting the initial load of a spring is shown (Example 1);

[0040] Figure 14 A schematic diagram of a device for adjusting the initial load of a spring is shown (Example 2);

[0041] Figure 15 The diagram shows the internal structure of an existing machining tool; and

[0042] Figure 16 (a) and Figure 16 (b) shows a photograph of the pins in the existing inclined support structure, wherein... Figure 16 (a) shows the new pin. Figure 16 (b) shows the worn pin. Detailed Implementation

[0043] Example

[0044] The embodiments of the processing tool of the present invention will now be described in detail with reference to the accompanying drawings.

[0045] Figure 1 According to one embodiment of the present invention, a schematic diagram of the internal structure of a machining tool 100 is shown. An upper shaft 1 is a drive shaft configured to be detachably attached to a main unit, such as a machining machine or robot, through which torque is transmitted. A tilting device 3 is connected to the end of the upper shaft 1. The tilting device 3 includes a fixed yoke 3a, a tilting yoke 3b, a center block 3c, a pin 3dx connecting the center block 3c and the fixed yoke 3a, and a pin 3dy connecting the center block 3c and the tilting yoke 3b. A tilting plate 7 is provided at the upper end of the main drive shaft 4, and a retainer 5 is attached to the end of the shaft 4, wherein the tilting plate 7 is connected to the tilting yoke 3b. A cutting tool 6 is inserted into the retainer 5. A tilting support structure 15 is configured to contact the bottom surface of the tilting plate 7, wherein the tilting plate 7 is supported by steel balls 12 when tilted. A cover 14, including an upper cover 14a and a lower cover 14b, is configured to cover the exterior of the upper shaft 1, the tilting device 3, and the tilting support structure 15. Air supplied from the main unit to the air passage 8 passes through the tilting device 3 and is released to the outside through the gap between the retainer 5 and the lower cover 14b for dust prevention, thereby preventing fine particles from entering the tool.

[0046] Figure 2 It shows Figure 1The diagram shows the main drive shaft 4, retainer 5, and cutting tool 6 after tilting. If a lateral load is applied to the cutting tool 6 in the lateral direction, the main drive shaft 4, retainer 5, and cutting tool 6 will tilt. This tilting is made about the pin 3dx of the tilting device 3 connected to the fixed yoke 3a and the center block 3c. The tilt angle is α°. A 360° tilt can be made in any direction. If the main drive shaft 4, retainer 5, and cutting tool 6 tilt, the tilting plate 7 attached to the upper end of the main drive shaft 4 will also tilt. Figure 2 As shown, when the end of the cutting tool 6 tilts to the right, the steel ball 12 on the left side of the tilted support structure 15 is compressed and drops, while the steel ball 12 on the right side of the tilted support structure 15 remains stationary.

[0047] Figure 3 For along Figure 1 The cross-sectional view along line BB shows the cross-section of the central portion of the tilting device 3. In the tilting device 3, the pin 3dx connecting the central block 3c and the fixed yoke 3a, and the pin 3dy connecting the central block 3c and the tilting yoke 3b, are arranged in a cross shape. If the tilting yoke 3b and the central block 3c rotate about the pin 3dx, the tilting yoke 3b can move along... Figure 3 The tilt is in the left-right direction. If the tilted yoke 3b and the center block 3c rotate about the pin 3dy, then the tilted yoke 3b can be tilted along... Figure 3 The vertical direction is tilted. This combination of rotational motions allows the tilting yoke 3b to tilt in all circumferential directions.

[0048] Figure 4 An external view of the tilting device 3 is shown. (Reference) Figure 4 The tilting device 3 includes a fixed yoke 3a, a tilting yoke 3b, a center block 3c, a pin 3dx connecting the center block 3c and the fixed yoke 3a, and a pin 3dy connecting the center block 3c and the tilting yoke 3b. Although the fixed yoke 3a is fixed to the upper shaft 1, the tilting yoke 3b can tilt freely relative to the fixed yoke 3a. In other words, the tilting device 3 is equivalent to a universal joint, albeit with minor differences. (See spherical sliding bearing 43). Figure 15 Compared to the spherical sliding bearing 43, the tilting device 3 can be made smaller while ensuring sufficient internal space. In addition, the tilting device 3 solves a problem unique to the spherical sliding bearing 43, namely, that the oil used in the bearing 43 deteriorates and adheres to the bearing 43.

[0049] Figure 5 (a)- Figure 5 (c) shows an exemplary structure of the tilting device 3. Figure 5 (a) shows the case where the tilted yoke 3b can be tilted in all circumferential directions. Figure 5 (b) illustrates the case where the tilting yoke 3b is restricted to tilting in one direction, wherein the center block 3c is fixed to the fixed yoke 3a. Figure 5(c) illustrates the state in which the positioning screw 21' can tilt in all circumferential directions and the state in which the tilting yoke 3b is restricted to tilting in one direction, as well as the operation of the support switching machining tool 100. Reference Figure 5 (a) The tilting yoke 3b of the tilting device 3 is configured to tilt in the full circumferential direction. Figure 5 (a) The tilting device 3 includes a fixed yoke 3a, a tilting yoke 3b, a center block 3c, a pin 3dx connecting the center block 3c and the fixed yoke 3a, and a pin 3dy connecting the center block 3c and the tilting yoke 3b.

[0050] refer to Figure 5 (b) The pin 3dx connecting the central block 3c and the fixed yoke 3a in the tilting device 3 is omitted, wherein the central block 3c extends and is integral with the fixed yoke 3a. Because Figure 5 (b) shows a tilting device with a pin 3dy connecting the center block 3c and the tilting yoke 3b, so that the tilting yoke 3b tilts in one direction. This construction of the tilting device 3 is suitable for deburring processes where the tilting yoke 3b does not need to tilt in all circumferential directions.

[0051] refer to Figure 5 (c), which shows Figure 5 (a) The tilting device 3 is provided with a positioning screw 21'. When the positioning screw 21' is in the operating state (open state) that prevents the center block 3c from moving, the tilting yoke 3b is restricted to tilting in one direction. When the positioning screw 21' is in the non-operating state (closed state) that allows the center block 3c to move, the tilting yoke 3b can tilt in all circumferential directions. This switching between the open and closed states can be easily performed externally by the positioning screw 21'.

[0052] Figure 6 An enlarged schematic diagram of the inclined support structure with the steel ball 12 is shown; Figure 7 A plan view of the inclined support structure 5 is shown. (Reference) Figure 6 The inclined support structure 15 includes a hole 13, a steel ball 12, a circular plate 11, and a spring 10 disposed on a support plate 9. The steel ball 12, the circular plate 11, and the spring 10 are inserted into the hole 13. An initial load is applied to the spring 10, which biases the steel ball 12 upwards. The biased steel ball 12 partially protrudes outside the support plate 9. A step 13a is provided on the hole 13 to prevent the circular plate 11 from rising above the step 13a. If the steel ball 12 is subjected to a downward load, the steel ball 12 retracts into the support plate 9. (Reference) Figure 7The support plate 9 is provided with 18 steel balls 12, which makes the load on each ball smaller and reduces the wear of the steel balls 12. The steel balls 12 are manufactured with high precision, for example, with a sphericity tolerance of 2-3 μm.

[0053] Figure 8 (a) and Figure 8 (b) shows an operational schematic diagram of the inclined support structure 15. Figure 8 (a) shows the tilted plate 7 in its untilted state. Figure 8 (b) shows the tilted state of the inclined plate 7. Figure 8 (a) and Figure 8 In (b), the tilting center is pin 3dx of the tilting device 3. The axis pointing vertically downward from the tilting center is the central axis 16, and the axis tilting from the central axis 16 is the tilting axis 17. (See reference) Figure 8 (a) If the tilting plate 7 is not tilted, the steel balls 12 extend evenly from the support plate 9 to press against and receive the tilting plate 7. If the cutting tool 6 is under load, and the main drive shaft 4, the retainer 5, and the cutting tool 6 tilt accordingly, the tilting plate 7 attached to the main drive shaft 4 tilts. Then, as... Figure 8 As shown in (b), the inclined plate 7 presses down on one side of the steel ball 12, causing the steel ball 12 to retract into the support plate 9. In this case, the steel ball 12 on the other side protrudes outward from the support plate 9. However, since the upward movement of the circular plate 11 is restricted by the step 13a provided on the hole 13, the spring 10 on the other side does not act on the steel ball 12 except for the initial load. Furthermore, in this case, a gap is created between the steel ball 12 and the inclined plate 7, so that the steel ball 12 no longer presses against the inclined plate 7. If the steel ball 12 retracts into the hole 13 and presses against the support plate 9, the steel ball 12 will compress the spring 10, thereby generating a repulsive force of the spring 10. This force allows the inclined plate 7 to return to a horizontal position. If the inclined plate 7 becomes horizontal, the main drive shaft 4, the retainer 5, and the cutting tool 6 are aligned in the vertical direction.

[0054] Figure 9 A schematic diagram of the airflow within the machining tool 100 is shown. Air is supplied from the main unit through the air passage 8 of the upper shaft 1 and released to the outside through the gap between the lower cover 14b and the main drive shaft 4, i.e., air purging is performed. This prevents fine particles from entering the interior of the machining tool 100.

[0055] Figure 10 (a) and Figure 10 (b) shows a schematic diagram of how a machining tool 100, including a main drive shaft 4, a retainer 5 and a cutting tool 6, operates when the cutting tool 6 is under load. Figure 10(a) shows the state in which the main drive shaft 4, retainer 5, and cutting tool 6 do not move when the cutting tool 6 is under load. Figure 10 (b) shows the state in which the main drive shaft 4, cage 5, and cutting tool 6 have moved when the cutting tool 6 is under load. Reference Figure 10 (a) Under the initial load, both springs 10 on the left and right sides are compressed. Each spring 10 generates a biasing force F0. The steps 13a provided in each hole 13 block the advance of the circular plate 11. Inside the hole 13, the steps 13a contact the circular plate 11, the circular plate 11 contacts the steel ball 12, and the steel ball 12 contacts the inclined plate 7. If the cutting tool 6 is subjected to a transverse load F, the inclined plate 7 will not move unless the load F is greater than the initial inclined load f (f = F0 × a / L). This state is as follows: Figure 10 As shown in (a). If F is greater than f, then the tilting plate 7 moves. This state is as follows. Figure 10 As shown in (b). Because a step 13a is provided as a forward blocking part, when the inclined plate 7 is as... Figure 10 During the movement shown in (b), only one spring (the spring on the left) is compressed. Therefore, as the lateral load F borne by the cutting tool 6 decreases, the tilting plate 7 returns quickly and stably to its original position. Figure 10 The state shown in (a) indicates that the machining tool 100 achieves high centering performance.

[0056] Figure 11 This diagram illustrates the replacement of the inclined support structure 15 as a single component. The diagram exemplifies how component C, which includes a coarse spring, or component D, which includes a double spring, can be replaced with component E, which is already mounted on the machining tool 100. Components C, D, and E are mounted as a group on the inclined support structure 15. Each component includes a support plate 9, a steel ball 12, a circular plate 11, and a spring 10, all of which are covered by a lower cover 14b.

[0057] Figure 12 A schematic diagram showing only the spring of the inclined support structure 15 is shown. The lower cover 14b of the machining tool 100 includes a base 14ba and a removable cap 14bb as the end of the lower cover 14b. By removing the cap 14bb, the installed spring 10 can be easily removed. By removing the cap 14bb, the installed spring can be easily replaced with, for example, a thick spring or a double spring.

[0058] Figure 13 and 14 Schematic diagrams of the devices for adjusting the initial load of spring 10 are shown. Figure 13 Example 1 is shown. Figure 14 Example 2 is shown.

[0059] refer to Figure 13 The cap 14bb includes a plurality of steel balls 21 on its inner portion. The cap 14bb has threaded holes at several locations on its periphery. The steel balls 21 are inserted into the threaded holes to engage with ball grooves 24 of the base 14ba, allowing the cap 14bb to rotate outward from the base 14ba. Each threaded hole is provided with a locating screw 20 to prevent the steel balls 21 from falling out. By providing a plurality of grooves on the base 14ba as ball grooves 24 to receive the steel balls 21, the locating screws 20, which secure the cap 14bb to the base 14ba, can press the steel balls 21 into the grooves. An adjusting disc 22 is provided at the bottom of each hole 13. The adjusting disc 22 is screwed to the base 14ba. A pin 23 is configured such that one end of the pin 23 is fixed to the adjusting disc 22, and the other end of the pin 23 protrudes from a vertical elongated hole in the cap 14bb to the outside of the cap 14bb. Rotating the cap 14bb causes the adjusting disc 22 to rotate via the pin 23, which in turn moves the adjusting disc 22 up and down to change the length of the spring 10. Therefore, the initial load on the spring 10 can be adjusted. The load can be checked externally by the position of the pin 23 in the elongated hole. After adjusting the initial load, tighten the locating screw 20 to secure the cap 14bb to the base 14ba. Figure 13 Example 1 features a double spring. If only the first outer spring acts on the applied load, the load can be adjusted within a given range. If the applied load exceeds the capacity of the first outer spring, both the first outer spring and the second inner spring act simultaneously.

[0060] refer to Figure 14 The cap 14bb includes a plurality of steel balls 21 on its inner portion. The cap 14bb has threaded holes at several locations on its outer periphery. The outer periphery of the base 14ba has ball grooves 24. The steel balls 21 are inserted into the threaded holes to engage with the ball grooves 24 of the base 14ba, allowing the cap 14bb to rotate outward from the base 14ba. A locating screw 20 is provided in each threaded hole to prevent the steel balls 21 from falling out. Multiple recesses are provided on the base 14ba as ball grooves 24 for receiving the steel balls 21. The locating screws 20 press the steel balls 21 into the recesses and fix the cap 14bb to the base 14ba. The protruding portion of the base 14ba is inserted into the cutout portion of the adjusting disc 22, allowing the adjusting disc 22 to move only axially relative to the base 14ba. The adjusting disc 22 is screwed to the cap 14bb. By rotating the cap 14bb, the adjusting disc 22 moves vertically, thereby changing the spring length and adjusting the initial load. After adjusting the initial load, tighten the positioning screw 20 to secure the cap 14bb to the base 14ba. Figure 14Example 2 features a dual-spring configuration. The initial load on the first spring is adjusted while the second spring is compressed by the spring bearing and retaining ring. If the load on the first outer spring is within the given range of the initial load, only the first outer spring is active. If the load on the first outer spring is greater than the load the first spring can withstand, both the first outer spring and the second inner spring are active simultaneously.

[0061] Industrial applicability

[0062] This invention significantly improves the wear resistance of the inclined support structure, thereby providing a machining tool with a long service life. The inclined support structure, including steel balls, provides smooth and precise operation for the machining tool and can withstand high loads applied to it. These characteristics make this invention suitable for deburring processes.

[0063] Figure Labels

[0064] 1. Upper shaft

[0065] 3. Tilting device

[0066] 3a. Fixed yoke

[0067] 3b. Inclined yoke

[0068] 3c. Center block

[0069] 3dx.pin

[0070] 3dy. sales

[0071] 4. Main drive shaft

[0072] 5. Retainer

[0073] 6. Cutting tools

[0074] 7. Inclined plate

[0075] 8. Gas duct

[0076] 9. Support plate of inclined support structure

[0077] 10. Springs in inclined support structures

[0078] 11. Disc with inclined support structure

[0079] 12. Steel balls in an inclined support structure

[0080] 13. Kong

[0081] 13a. Steps

[0082] 14. Cover

[0083] 14a. Top cover

[0084] 14b. Bottom cover

[0085] 14ba. base

[0086] 14bb. hat

[0087] 15. Inclined support structure

[0088] 16. Central axis

[0089] 17. Inclined axis

[0090] 20. The locating screw of the cap

[0091] 21. Steel ball used to secure the cap

[0092] 21'. Positioning screw of the tilting device

[0093] 22. Adjustment dial

[0094] 23. Sales

[0095] 24. Ball groove

[0096] 30. Existing pin-type inclined support structure

[0097] 31. Existing pin boxes

[0098] 32. Existing sales

[0099] 41. Existing pressure receiving plate

[0100] 43. Existing spherical sliding bearings

[0101] 100. Machining tools

Claims

1. A processing tool, comprising: The upper shaft (1) is attached to the main unit and through which torque is transmitted; An inclined device (3) is connected to the end of the upper shaft (1). The inclined device (3) includes a fixed yoke (3a), an inclined yoke (3b), a first pin (3dx), and a second pin (3dy). The inclined yoke (3b) rotates about the first pin (3dx) in one direction, and the inclined yoke (3b) rotates about the second pin (3dy) in a direction orthogonal to the first direction. The main drive shaft (4) surrounds an inclined plate (7) located at its upper end, the inclined plate (7) being connected to the inclined yoke (3b). A retainer (5) is inserted into the end of the main drive shaft (4), and a cutting tool (6) is attached to the retainer (5); and, An inclined support structure (15) is in contact with the bottom surface of the inclined plate (7) to support the inclined plate (7) by means of a steel ball (12).

2. The processing tool according to claim 1, characterized in that: The tilting device (3) includes a positioning screw (21'). If the positioning screw (21') is in the working state, the tilting yoke (3b) is restricted to rotating in one direction; if the positioning screw (21') is in the non-working state, the tilting yoke (3b) can tilt in all circumferential directions.

3. The processing tool according to claim 1, characterized in that: The inclined support structure (15) is housed in the lower cover (14b). The inclined support structure (15) includes a support plate (9), a plurality of holes (13) provided on the support plate (9), a steel ball (12), a circular plate (11), a spring (10), and a step (13a). The steel ball (12), the circular plate (11), and the spring (10) are all inserted into each hole (13). Each hole (13) is provided with a step (13a). The initial load is applied to the spring (10), and the circular plate (11) does not rise above the step (13a).

4. The processing tool according to claim 3, characterized in that: The inclined support structure (15) is replaced as a component, which includes a support plate (9), a steel ball (12), a circular plate (11), a spring (10), and a lower cover (14b).

5. The processing tool according to claim 3, characterized in that: The lower cover (14b) includes a base (14ba) and a cap (14bb), wherein removing the cap (14bb) allows only the spring to be replaced.

6. The processing tool according to claim 5, characterized in that: The inclined support structure (15) includes an adjusting disc (22) in contact with the bottom side of each spring (10) and a third pin (23) fixed at one end to the adjusting disc (22), the other end of the third pin (23) protruding from a vertical elongated hole in the cap (14bb) to the outside of the cap (14bb), the adjusting disc (22) being connected to the base (14ba) by screws; and Rotating the cap (14bb) on the ball groove (24) allows the adjustment disk (22) to be rotated via the third pin (23), causing the adjustment disk (22) to move up and down to change the length of the spring (10), thereby changing the initial load of the spring (10).

7. The machining tool according to claim 5, characterized in that: The inclined support structure (15) includes an adjusting disc (22) in contact with the bottom side of each spring (10), the adjusting disc (22) being connected to the cap (14bb) by screws; and Rotating the cap (14bb) on the ball groove (24) causes the adjusting disk (22) to rotate, thereby moving the adjusting disk (22) up and down to change the initial load of the spring (10).

8. The processing tool according to claim 1, characterized in that: The upper shaft (1) includes an air passage (8), through which air enters the air passage (8) via an inclined device (3) located in the upper cover (14a) and is released to the outside via the gap between the lower cover (14b) and the main drive shaft (4).

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