Self-balancing fine boring head
By setting the linkage device and locking device of the tool holder and counterweight block in the self-balancing fine boring head, the tool self-balancing is achieved, solving the complex problem of dynamic balance adjustment of the traditional fine boring head, and improving processing efficiency and stability.
Patent Information
- Application Number
- CN202422295249.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-19
- Publication Date
- 2025-07-04
- Estimated Expiration
- 2034-09-19
AI Technical Summary
The existing fine boring tool heads are troublesome in dynamic balance adjustment and verification, and poor adjustment accuracy may lead to damage or dangerous cutting heads.
A self-balancing fine boring head is designed, by providing the first and second channels on the tool holder, slidingly connecting the tool holder and the counterweight block, and the opposite direction of the tool holder and the counterweight block is realized through the linkage device and the locking device. The locking device restricts its movement and ensures that the center of gravity always coincides with the rotation axis.
The dynamic balance adjustment process is simplified, processing efficiency and stability is improved, operating complexity is reduced, and processing accuracy is ensured.
Smart Images
Figure CN223056742U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of cutting machining, and particularly relates to a self-balancing fine boring head. Background Art
[0002] With the rapid development of industrial technology, people have higher and higher requirements for inner holes and machining efficiency. People often obtain better inner hole surface quality and higher machining efficiency by increasing the rotational speed of the tool. As the rotational speed of the tool increases, the requirement for the dynamic balance of the tool becomes higher and higher. As a finishing tool, the fine boring head especially needs to pay attention to the dynamic balance effect.
[0003] However, the existing fine boring heads have the following defects: The adjustment and verification of the self-dynamic balance of the traditional fine boring head are relatively troublesome, and the adjustment accuracy is poor, which may cause tool head damage or even danger due to insufficient dynamic balance accuracy. Summary of the Invention
[0004] An object of the present application is to provide a self-balancing fine boring head that is convenient to use and operates stably.
[0005] To achieve the above object, the technical solution adopted in the present application is: A self-balancing fine boring head includes a tool shank, a tool holder, and a counterweight. A first channel and a second channel are provided on the tool shank. Both the first channel and the second channel are opened along a first direction. The tool holder is disposed in the first channel and is adapted to slide along the first channel. The counterweight is disposed in the second channel and is adapted to slide along the second channel. A linkage device and a locking device are provided between the tool holder and the counterweight. The linkage device is adapted to transmit actions in opposite directions between the tool holder and the counterweight. The locking device is adapted to restrict the movement of the tool holder and / or the counterweight.
[0006] In some embodiments, a first rack portion is provided on the tool holder, a second rack portion is provided on the counterweight, a gear portion is provided on the linkage device, and the gear portion is cooperatively connected with the first rack portion and the gear portion is cooperatively connected with the second rack portion.
[0007] In some embodiments, the rotation center of the linkage device passes through the axis of the tool shank.
[0008] In some embodiments, the locking device includes a locking post and a locking member. The locking member is adapted to move the locking post closer to or away from the tool holder and / or the counterweight, and the locking member is adapted to make the locking post abut and cooperate with the tool holder and / or the counterweight for locking.
[0009] In some embodiments, a third channel and a fourth channel are formed in the tool shank and are in communication with each other. The third channel is in communication with the first channel and the second channel. The locking post is disposed in the third channel, and the locking member is disposed in the fourth channel. The locking member is adapted to slide along the fourth channel and push the locking post against the tool holder and the counterweight.
[0010] In some embodiments, the third channel is tangent to both the first channel and the second channel. The first channel is perpendicular to the radial direction of the third channel, and the diameter of the third channel is not less than the diameter of the locking post. Contact grooves can be formed on the locking post, and the contact grooves are adapted to make line contact or surface contact with the tool holder and / or the counterweight.
[0011] In some embodiments, the fourth channel is in communication with the linkage device. A ball portion is provided on one side of the linkage device close to the locking device, and the ball portion is adapted to make point contact with the locking device.
[0012] In some embodiments, an adjusting device is provided on the tool shank. The adjusting device is disposed at one end of the first channel and is connected to the tool holder. The adjusting device is adapted to slide the tool holder along the first channel.
[0013] In some embodiments, a first mark is provided on the adjusting device, and a second mark is provided around the end of the first channel on the tool shank. The second mark is adapted to cooperate with the first mark. The adjusting device is provided with an operation opening on the outer side of the tool shank, and the operation opening is located at the axis of the first channel.
[0014] In some embodiments, a sliding groove is formed on the outer side of the tool holder along a first direction. A fifth channel is formed in the tool shank. A limiting device is provided on the tool shank. The limiting device is adapted to pass through the fifth channel and be connected to the sliding groove. The limiting device is adapted to slide along the first direction in the sliding groove, and the limiting device is adapted to be clamped with the sliding groove in the circumferential direction of the tool holder. The tool shank is provided with an oil injection port along a second direction, and the oil injection port is in communication with the first channel.
[0015] Compared with the prior art, the beneficial effects of the present application are as follows: By providing a counterweight and synchronously operating the counterweight with the tool holder, the self-balancing fine boring tool of the present application realizes a relative change in weight. The fine boring tool itself can always keep the center of gravity coincident with the rotation axis under the joint action of the counterweight and the tool holder. After the fine boring tool is assembled and the initial center of gravity correction is carried out, only the position of the tool holder needs to be adjusted as required and then locked, and it can be directly used without re-verifying the dynamic balance performance of the fine boring tool, which can reduce the complexity of the adjustment operation and improve the processing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 is an overall structural view according to a preferred embodiment of the present application.
[0017] Figure 2 is a connection schematic diagram of a tool holder, a linkage device and a counterweight according to a preferred embodiment of the present application.
[0018] Figure 3 is an arrangement schematic diagram of a locking device according to a preferred embodiment of the present application.
[0019] Figure 4 is an arrangement schematic diagram of a limiting device according to a preferred embodiment of the present application.
[0020] In the figure: 1, tool shank; 11, first channel; 12, second channel; 13, third channel; 14, fourth channel; 15, second identifier; 16, fifth channel; 17, oil filling port; 2, tool holder; 21, first rack portion; 22, sliding groove; 3, counterweight; 31, second rack portion; 4, linkage device; 41, gear portion; 42, ball portion; 43, accommodating groove; 5, locking device; 51, locking column; 511, contact groove; 52, locking member; 6, adjusting device; 61, first identifier; 62, operation port; 7, limiting device; 71, clamping groove. Detailed implementation manners
[0021] Next, in combination with the detailed implementation manners, the present application will be further described. It should be noted that, on the premise of no conflict, the following described embodiments or technical features can be arbitrarily combined with each other to form new embodiments.
[0022] In the description of the present application, it should be noted that for orientation terms, such as terms "center", "transverse", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., the indicated orientation and position relationship are based on the orientation or position relationship shown in the drawings. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and should not be construed as limiting the specific protection scope of the present application.
[0023] It should be noted that the terms "first", "second", etc. in the description and claims of the present application are used to distinguish similar objects, and do not have to be used to describe a specific order or sequence.
[0024] The terms "comprising" and "having" and any variations thereof in the description and claims of this application are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or device that comprises a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units not clearly listed or inherent to these processes, methods, products, or devices.
[0025] The following further describes this application in conjunction with the accompanying drawings:
[0026] As Figures 1 to 4 shown, this application provides a self-balancing fine boring head, which includes a tool shank 1, a tool holder 2, and a counterweight 3. A first channel 11 and a second channel 12 are provided on the tool shank 1. Both the first channel 11 and the second channel 12 are opened along a first direction. In this application, to ensure the normal operation of the tool holder 2 and the counterweight 3, the first channel 11 and the second channel 12 are generally arranged to overlap each other. The tool holder 2 is arranged in the first channel 11 and is adapted to slide along the first channel 11. The counterweight 3 is arranged in the second channel 12 and is adapted to slide along the second channel 12.
[0027] In this application, the first direction is generally the radial direction of the tool shank 1.
[0028] A linkage device 4 and a locking device 5 are provided between the tool holder 2 and the counterweight 3. The linkage device 4 is adapted to transmit actions in opposite directions between the tool holder 2 and the counterweight 3, that is, when the tool holder 2 moves along the first direction, the counterweight 3 can move in the opposite direction of the first direction, and when the tool holder 2 moves in the opposite direction of the first direction, the counterweight 3 can move in the first direction. Similarly, when the counterweight 3 moves, the locking device 5 is adapted to restrict the movement of the tool holder 2 and / or the counterweight 3. The tool holder 2 and the counterweight 3 can use the linkage device 4 to perform synchronous activities without changing the center of gravity of the self-balancing fine boring head, and then lock the position through the locking device 5, so as to achieve the self-balancing purpose while effectively improving the stability of the use of the self-balancing fine boring head and maintaining the current accuracy of the self-balancing fine boring head.
[0029] As Figure 2 shown in the embodiment, a first rack portion 21 is provided on the tool holder 2, a second rack portion 31 is provided on the counterweight 3, and a gear portion 41 is provided on the linkage device 4. The gear portion 41 is connected in cooperation with the first rack portion 21, and the gear portion 41 is connected in cooperation with the second rack portion 31. The linkage device 4 uses the connection form of gears and racks to achieve the transmission of actions in opposite directions between the tool holder 2 and the counterweight 3. Such a design can also ensure the smoothness and adjustment accuracy of the adjustment process.
[0030] As Figure 2 shown in the embodiment, the rotation center of the linkage device 4 passes through the axis of the tool shank 1 ( Figure 2As shown by the dash-dotted line in [Figure 0], it can be understood that, under the conventional structural design of a gear rack, the center of gravity of the structure formed by the cooperation of the tool holder 2, the counterweight 3, and the linkage device 4 is at the rotation center of the linkage device 4. Therefore, as long as the overall weight of the structure formed by the cooperation of the tool holder 2, the counterweight 3, and the linkage device 4 is kept consistent on both sides of the axis of the tool handle 1 along the direction of the rotation center of the linkage device 4, and then the rotation center of the linkage device 4 is made to pass through the axis of the tool handle 1, the center of gravity can always be kept at the axis of the tool handle 1 when the structure formed by the cooperation of the tool holder 2, the counterweight 3, and the linkage device 4 changes.
[0031] In some embodiments, the locking device 5 includes a locking post 51 and a locking member 52. The locking member 52 is adapted to move the locking post 51 closer to or farther from the tool holder 2 and / or the counterweight 3, and the locking member 52 is adapted to make the locking post 51 contact and cooperate with the tool holder 2 and / or the counterweight 3 for locking. With the locking device 5, the positions of the tool holder 2 and the counterweight 3 can be conveniently limited to ensure the machining accuracy of the adjusted self-balancing boring head.
[0032] As Figure 3 In the shown embodiment, the locking post 51 is adapted to move the locking post 51 closer to or farther from the tool holder 2, and the locking member 52 is adapted to make the locking post 51 contact and cooperate with the tool holder 2 for locking. Since the tool holder 2 and the counterweight 3 are linked by the linkage device 4, when the tool holder 2 is locked, the counterweight 3 will also be locked synchronously. It can be understood that since the tool holder 2 is in direct contact with the tool head, the stability of the tool holder 2 is directly related to the machining stability of the tool head. Therefore, the locking device 5 needs to lock the tool holder 2 first to ensure the machining stability.
[0033] In some embodiments, the locking post 51 can move closer to and lock both the tool holder 2 and the counterweight 3 simultaneously, which can further improve the structural stability of the tool holder 2 and the counterweight 3 as a whole when they are locked.
[0034] In some embodiments, a contact groove 511 can be formed on the locking post 51. Through the contact groove 511, the locking post 51 can make line contact or surface contact with the tool holder 2 and / or the counterweight 3. The contact groove 511 can improve the contact effect between the locking post 51 and the tool holder 2 and / or the counterweight 3, thereby improving the locking effect.
[0035] As Figure 3 In the shown embodiment, the locking post 51 makes surface contact with the tool holder 2 through the contact groove 511 to obtain a higher locking effect.
[0036] As Figure 3In the illustrated embodiment, the locking device 5 is specifically arranged as follows: a third channel 13 and a fourth channel 14 are provided on the knife handle 1, the third channel 13 is connected to the first channel 11 and the second channel 12, the locking column 51 is arranged in the third channel 13, the locking member 52 is arranged in the fourth channel 14, and the locking member 52 is suitable for sliding along the fourth channel 14 and pushing the locking column 51 to the knife seat 2 and the counterweight block 3.
[0037] like Figure 3 In the illustrated embodiment, the locking member 52 is provided with a hexagonal screw hole toward the outside of the fourth passage 14 for operation.
[0038] like Figure 3 In the illustrated embodiment, the locking member 52 is threadedly connected to the fourth channel 14. The locking member 52 can move along the fourth channel 14 by rotating and push the locking column 51 to move. The end of the locking member 52 that contacts the locking column 51 is set as an arc-shaped surface, which can reduce the contact wear between the locking member 52 and the locking column 51 during the process of rotating the locking column 51.
[0039] In some embodiments, the third channel 13 and the fourth channel 14 are arranged perpendicular to each other, which can improve the stability of the locking member 52 pushing the locking column 51 to the knife seat 2 and the counterweight block 3, making it difficult to loosen and unlock.
[0040] like Figure 3 In the illustrated embodiment, the third channel 13 is tangent to the first channel 11 and the second channel 12, the first channel 11 is perpendicular to the radial direction of the third channel 13, and the diameter of the third channel 13 is greater than the diameter of the locking column 51. The purpose of this is that when the locking member 52 does not press the locking column 51, the locking column 51 can maintain a certain distance from the tool holder 2 and the counterweight block 3, so that the tool holder 2 and the counterweight block 3 have room for movement. When the locking member 52 presses the locking column 51, the locking column 51 can move, so that the tool holder 2 and the counterweight block 3 are tightened.
[0041] In some embodiments, the diameter of the third channel 13 is equal to the diameter of the locking column 51, and the locking member 52 can be used to compress the locking column 51 to cause a slight deformation, thereby contacting the knife seat 2 and the counterweight block 3 for tightening. Therefore, the thickness of the locking column 51 at the point where it is pressed by the locking member 52 can be appropriately reduced, thereby reducing the difficulty of deformation and improving the tightness.
[0042] like Figure 3In the illustrated embodiment, the fourth channel 14 communicates with the linkage device 4. A ball portion 42 is provided on the side of the linkage device 4 close to the locking device 5. The ball portion 42 is adapted to make point contact with the locking device 5. The arrangement of the linkage device 4 at the fourth channel 14 can reduce the machining difficulty of the tool handle 1, reduce the machining steps, and achieve a common structure. When the linkage device 4 is arranged in the fourth channel 14, the locking post 51 will contact and limit the movement of the linkage device 4 as a limiting structure. Therefore, by providing the ball portion 42 on the linkage device 4 to contact the locking post 51, the smooth movement of the connection device can be ensured, and at the same time, the contact wear between the connection device and the locking post 51 can be reduced.
[0043] As Figure 3 In the illustrated embodiment, a receiving groove 43 is formed in the linkage device 4. The receiving groove 43 is used to receive the ball portion 42. The ball portion 42 can be kept in the receiving groove 43 under the restriction of the locking post 51 and can roll in the receiving groove 43.
[0044] As Figure 1 and 2 In the illustrated embodiment, an adjusting device 6 is provided on the tool handle 1. The adjusting device 6 is arranged at one end of the first channel 11. The adjusting device 6 is connected to the tool holder 2. The adjusting device 6 is adapted to slide the tool holder 2 along the first channel 11.
[0045] In some embodiments, the adjusting device 6 is a turntable structure and is connected to the tool holder 2 by a connection method of a lead screw cooperating with a bearing. By operating the rotation of the adjusting device 6, the tool holder 2 can be slid along the first channel 11.
[0046] As Figure 1 In the illustrated embodiment, a first identifier 61 is provided on the adjusting device 6, preferably on the turntable of the adjusting device 6. Second identifiers 15 are provided around the end of the first channel 11 on the tool handle 1. The second identifiers 15 are adapted to cooperate with the first identifier 61.
[0047] In some embodiments, the first identifier 61 and the second identifiers 15 are scale identifiers, and the adjustment distance of the tool holder 2 can be observed and determined by using the first identifier 61 and the second identifiers 15, which is convenient for operation.
[0048] As Figure 1 In the illustrated embodiment, an operation opening 62 is provided on the outside of the tool handle 1 for the adjusting device 6. The operation opening 62 is located at the axis of the first channel 11, making the adjusting device 6 convenient to operate and rotate.
[0049] In some embodiments, the operation opening 62 preferably uses an internal hexagonal screw hole, which saves space and is not prone to misoperation.
[0050] As Figure 4In the illustrated embodiment, a sliding groove 22 is formed on the outer side of the tool holder 2 along a first direction. A fifth channel 16 is formed on the tool handle 1. A limiting device 7 is arranged on the tool handle 1. The limiting device 7 is adapted to pass through the fifth channel 16 and be connected to the sliding groove 22. The limiting device 7 is adapted to slide along the first direction in the sliding groove 22. The limiting device 7 is adapted to be clamped with the sliding groove 22 in the circumferential direction of the tool holder 2, which can improve the stability of the tool holder 2, reduce the probability of the tool holder 2 moving relative to the tool handle 1, and thus improve the machining accuracy.
[0051] As Figure 4 In the illustrated embodiment, at least one of the upper and lower sides of the limiting device 7 is provided with a clamping groove 71. The limiting device 7 is clamped with the sliding groove 22 by using the clamping groove 71 to achieve clamping with the sliding groove 22 in the circumferential direction of the tool holder 2. To ensure the normal entry of the limiting device 7, the limiting device 7 can be designed as a split structure. One part of the limiting device 7 is clamped with the sliding groove 22, and the other part of the limiting device 7 is provided with a threaded structure and can be threadedly connected to the fifth channel 16 to achieve movement.
[0052] As Figure 1 In the illustrated embodiment, an oil injection port 17 is formed on the tool handle 1 along a second direction. The oil injection port 17 is communicated with the first channel 11. Lubricating liquid can be poured into the tool holder 2 through the oil injection port 17 to reduce the wear of the tool during machining.
[0053] The above describes the basic principle, main features and advantages of the present application. Those skilled in the art should understand that the present application is not limited by the above embodiments. What is described in the above embodiments and the specification is only the principle of the present application. Without departing from the spirit and scope of the present application, the present application will have various changes and improvements, and these changes and improvements all fall within the scope of the present application claimed. The scope of protection required by the present application is defined by the appended claims and their equivalents.
Claims
1. A self-balancing fine boring head, characterized in that: The utility model comprises a knife handle, a knife seat and a counterweight block, wherein the knife handle is provided with a first channel and a second channel, wherein the first channel and the second channel are both opened in a first direction, the knife seat is arranged in the first channel and is suitable for sliding along the first channel, the counterweight block is arranged in the second channel and is suitable for sliding along the second channel, a linkage device and a locking device are arranged between the knife seat and the counterweight block, the linkage device is suitable for transmitting the action between the knife seat and the counterweight block in opposite directions, and the locking device is suitable for limiting the movement of the knife seat and / or the counterweight block.
2. The self-balancing fine boring head according to claim 1, characterized in that: The knife seat is provided with a first rack portion, the counterweight block is provided with a second rack portion, the linkage device is provided with a gear portion, the gear portion is cooperatively connected with the first rack portion, and the gear portion is cooperatively connected with the second rack portion.
3. The self-balancing fine boring head according to claim 2, wherein: The rotation center of the linkage device passes through the axis of the tool handle.
4. The self-balancing fine boring head according to claim 1, characterized in that: The locking device comprises a locking column and a locking member, wherein the locking member is suitable for making the locking column approach or move away from the tool holder and / or the counterweight block, and the locking member is suitable for making the locking column contact and lock with the tool holder and / or the counterweight block.
5. The self-balancing fine boring head according to claim 4, characterized in that: The knife handle is provided with a third channel and a fourth channel which are interconnected, the third channel is connected with the first channel and the second channel, the locking column is arranged in the third channel, the locking member is arranged in the fourth channel, and the locking member is suitable for sliding along the fourth channel and pushing the locking column to the knife seat and the counterweight block.
6. The self-balancing fine boring head according to claim 5, characterized in that: The third channel is tangent to both the first channel and the second channel, the first channel is perpendicular to the radial direction of the third channel, and the diameter of the third channel is not less than the diameter of the locking column; a contact groove can be opened on the locking column, and the contact groove is suitable for line contact or surface contact with the tool holder and / or the counterweight block.
7. The self-balancing fine boring head according to claim 5, wherein: The fourth channel is communicated with the linkage device. A ball portion is provided on a side of the linkage device close to the locking device. The ball portion is suitable for point contact with the locking device.
8. The self-balancing fine boring head according to claim 1, characterized in that: The knife handle is provided with an adjusting device, the adjusting device is arranged at one end of the first channel, the adjusting device is connected to the knife seat, and the adjusting device is suitable for making the knife seat slide along the first channel.
9. The self-balancing fine boring head according to claim 8, characterized in that: The adjusting device is provided with a first mark, and the handle is provided with a second mark around the end of the first channel, and the second mark is suitable for cooperating with the first mark; the adjusting device is provided with an operating port on the outside of the handle, and the operating port is located at the axis of the first channel.
10. The self-balancing fine boring head according to claim 1, wherein: A sliding groove is provided on the outer side of the tool seat along the first direction, a fifth channel is provided on the tool handle, a limiting device is provided on the tool handle, the limiting device is suitable for passing through the fifth channel and connected to the sliding groove, the limiting device is suitable for sliding in the sliding groove along the first direction, and the limiting device is suitable for clamping with the sliding groove in the circumferential direction of the tool seat; an oil filling port is provided on the tool handle along the second direction, and the oil filling port is connected to the first channel.