A telescopic tool handle structure for a boring machine

Abstract

The present invention discloses a telescopic tool holder structure for a boring machine, which can be telescoped in two stages, does not require repeated installation, and does not require repeated adjustment of coaxiality. The inner profile with a relatively large radius and the inner hole with a large aperture can be directly processed by extending the tool. At the same time, the structure is simple, the installation is convenient, the telescopic distance can be controlled, and the rigidity is good. The production cost is low, the maintenance is convenient and fast, the replacement efficiency is high, the positioning accuracy is good, and the blade structure can be designed in a non-standard manner to meet different processing requirements. It is very easy to popularize and promote in the processing of inner profiles with large radius ratios and the processing of inner holes with large apertures, providing a guarantee for the entire processing method and accuracy, and also providing an effective design method and idea.

Description

Technical Field

[0001] The invention relates to the technical field of machining, in particular to a two-stage telescopic tool holder structure for a boring machine capable of machining an inner profile with a large radius ratio and a large aperture. Background Art

[0002] At present, ordinary horizontal boring machines are widely used in the mechanical processing industry. However, the current processing size range of boring machines is relatively small. If it is necessary to process internal surfaces with larger radii and larger apertures, it is necessary to install eccentric disks and other auxiliary tools, and the installation work is complicated and tedious. In addition, the use of these auxiliary tools requires repeated centering, which is a lot of work and prone to large errors. At the same time, the internal surfaces are processed by installing eccentric disks and other auxiliary devices through eccentrically installed boring bars. The size of the boring tool is constrained by the size of the aperture. In addition, the installation process of installing eccentric disks and other auxiliary devices is tedious and complicated, and it is necessary to repeatedly find the center to ensure the coaxiality of the inner hole, which poses a great processing risk. In addition, the size of the boring tool is constrained by the size of the aperture, and the processable size is limited, making it impossible to complete the processing of internal surfaces with large radius ratios.

[0003] To solve the above problems, the prior art uses a telescopic boring tool holder structure design to process internal surfaces and larger apertures. However, the first-stage telescopic structure has a short stroke, which is limited by the width of the tool holder, and the telescopic length of the tool is relatively limited.

[0004] Therefore, how to provide a tool holder structure that does not require multiple installations, adjusts coaxiality, and can scalably process internal surfaces with large radius ratios is a technical problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0005] In light of the above-mentioned problems, the present invention provides a retractable toolholder structure for a boring machine, designed to overcome or at least partially resolve these issues. This structure addresses the machining of internal surfaces with relatively large radii and large bore diameters. It eliminates the need for multiple installations and adjustments to coaxiality, and can be retracted to machine internal surfaces with large radius ratios.

[0006] The present invention provides the following solutions:

[0007] A telescopic tool handle structure for a boring machine, comprising:

[0008] Main sleeve unit;

[0009] A telescopic unit, the telescopic unit comprising a primary lead screw, a secondary lead screw, a primary sleeve, and a secondary sleeve; one end of the secondary sleeve is fitted and connected to the interior of the primary sleeve, the secondary sleeve can slide axially relative to the primary sleeve and cannot move radially; an internal thread is provided on the inner side of the secondary sleeve, one end of the secondary lead screw is fitted and connected to the interior of the secondary sleeve, the inner side of the secondary lead screw is provided with an internal thread, the primary lead screw is fitted and connected to the interior of the secondary lead screw; a boring tool mounting cover is provided on the end of the secondary sleeve away from the primary sleeve;

[0010] a driving unit connected to the main sleeve unit;

[0011] In which, one end of the primary sleeve is connected to the interior of the main sleeve unit, and the primary sleeve can slide relative to the main sleeve unit in the axial direction but cannot move in the radial direction; the main sleeve unit is provided with a primary sleeve limit ring; the output end of the drive unit is connected to the primary screw; the drive unit is used to drive the primary screw to rotate so that the primary sleeve is extended from the main sleeve unit, and after the primary sleeve contacts the primary sleeve limit ring, drive the primary screw and the secondary screw to rotate synchronously so that the secondary sleeve is extended from the primary sleeve.

[0012] Preferably, the primary sleeve and the main sleeve unit, as well as the primary sleeve and the secondary sleeve, are connected in a key connection manner.

[0013] Preferably: the driving unit includes a driver, a first bevel gear and a second bevel gear meshing with the first bevel gear, the first bevel gear is located at the bottom of the main sleeve unit and is fixedly connected to the primary screw; the second bevel gear is located on the side of the main sleeve unit and is connected to the output end of the driver.

[0014] Preferably, the second bevel gear is connected to the output end of the driver through a transmission assembly.

[0015] Preferably, the transmission assembly includes a transmission gear shaft and a coupling, one end of the transmission gear shaft is connected to the second bevel gear, the other end of the transmission gear shaft is connected to the coupling, and the coupling is connected to the output shaft of the driver.

[0016] Preferably, the other end of the transmission gear shaft is connected to the coupling via an extended transmission shaft.

[0017] Preferably, the driver is connected to the main sleeve unit via a mounting seat.

[0018] Preferably, the mounting seat is connected to an adapter seat.

[0019] Preferably, the driver comprises a servo motor.

[0020] Preferably, the main sleeve unit includes a first main sleeve and a second main sleeve that are detachably connected.

[0021] According to the specific embodiments provided by the present invention, the present invention discloses the following technical effects:

[0022] The embodiment of the present application provides a telescopic tool holder structure for a boring machine, which can be telescoped in two stages, does not require repeated installation, and does not require repeated adjustment of coaxiality. It can directly process inner surfaces with relatively large radii and inner holes with large apertures by extending the tool. At the same time, it has a simple structure, is easy to install, can control the telescopic distance, and has good rigidity. It has low production costs, convenient and quick maintenance, high replacement efficiency, good positioning accuracy, and can design blade structures in a non-standard manner to meet different processing requirements. It is very easy to popularize and promote in the processing of inner surfaces with large radii and inner holes with large apertures, providing guarantees for the entire processing method and accuracy, and also providing an effective design method and idea.

[0023] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be derived from these drawings without inventive effort.

[0025] Figure 1 This is a schematic structural diagram of a telescopic tool holder structure for a boring machine provided by an embodiment of the present invention;

[0026] Figure 2 This is a cross-sectional view of a telescopic tool handle structure for a boring machine provided by an embodiment of the present invention;

[0027] Figure 3 This is a schematic structural diagram of a telescopic tool holder structure for a boring machine including an extended transmission shaft provided by an embodiment of the present invention;

[0028] Figure 4 This is a cross-sectional view of a telescopic tool holder structure for a boring machine including an extended transmission shaft provided by an embodiment of the present invention;

[0029] Figure 5 The present invention is a schematic diagram of the extension process of a telescopic tool holder structure of a boring machine provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0030] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field are within the scope of protection of the present invention.

[0031] See also Figure 1 、 Figure 2 , is a telescopic tool holder structure for a boring machine provided by an embodiment of the present invention, such as Figure 1 、 Figure 2 As shown, the structure may include:

[0032] Main sleeve unit; in order to facilitate the installation of various parts inside the main sleeve unit, the embodiment of the present application can also provide that the main sleeve unit includes a first main sleeve 2 and a second main sleeve 20 that are detachably connected.

[0033] The telescopic unit includes a primary screw 4, a secondary screw 5, a primary sleeve 6, and a secondary sleeve 7; one end of the secondary sleeve 7 is fitted and connected to the interior of the primary sleeve 6, and the secondary sleeve 7 can slide relative to the primary sleeve in the axial direction but cannot move radially; the inner side of the secondary sleeve 7 is provided with an internal thread, one end of the secondary screw 5 is fitted and connected to the interior of the secondary sleeve 7, the inner side of the secondary screw 5 is provided with an internal thread, and the primary screw 4 is fitted and connected to the interior of the secondary screw 5; a boring tool mounting cover 10 is provided on the end of the secondary sleeve 7 away from the primary sleeve 6;

[0034] a driving unit connected to the main sleeve unit;

[0035] Among them, one end of the primary sleeve 6 is connected to the interior of the main sleeve unit, and the primary sleeve 6 can slide relative to the main sleeve unit in the axial direction but cannot move in the radial direction; the main sleeve unit is provided with a primary sleeve limit ring 9; the output end of the drive unit is connected to the primary screw 4; the drive unit is used to drive the primary screw 4 to rotate so that the primary sleeve 6 is extended from the main sleeve unit, and after the primary sleeve 6 contacts the primary sleeve limit ring 9, the primary screw 4 is driven to rotate synchronously with the secondary screw 5, so that the secondary sleeve 7 is extended from the primary sleeve 6.

[0036] The telescopic toolholder structure for a boring machine provided in this application allows the boring tool to extend and retract along with the telescopic unit. The telescopic unit provides a two-stage telescopic function with a wide telescopic range, meeting the needs of machining large-radius internal surfaces and large-diameter internal holes. Furthermore, this structure eliminates the need for repeated centering during use, ensuring coaxiality during internal hole machining.

[0037] In order to further improve the guiding performance between the sleeves of each stage, the embodiment of the present application can provide that the first-stage sleeve 6 and the main sleeve unit, as well as the first-stage sleeve 6 and the second-stage sleeve 7 are connected by a key connection.

[0038] The driving unit provided in the embodiment of the present application is used to drive the screw to rotate, so as to achieve the function of driving the sleeve to extend and retract. In specific implementation, the embodiment of the present application can provide that the driving unit includes a driver, a first bevel gear 24 and a second bevel gear 25 meshing with the first bevel gear 24, the first bevel gear 24 is located at the bottom of the main sleeve unit and is fixedly connected to the primary screw 4; the second bevel gear 25 is located on the side of the main sleeve unit and is connected to the output end of the driver.

[0039] The drive unit provided in the embodiments of the present application primarily comprises a two-stage telescopic structure and a gear-screw drive mechanism. The telescopic sleeve in the telescopic structure is positioned and guided by a key and driven by a bevel gear bearing, resulting in excellent guidance, simple and convenient installation, and a good transmission effect. The use of the sleeve as the primary load-bearing component during telescoping effectively improves deformation resistance. This structure boasts a wide machining range, a small toolholder width, and excellent rigidity, enabling machining of internal surfaces and larger apertures.

[0040] In order to further improve the operational stability of the drive unit provided in the embodiment of the present application, the embodiment of the present application may further provide that the second bevel gear 25 is connected to the output end of the driver via a transmission assembly.

[0041] The transmission assembly includes a transmission gear shaft 14 and a coupling 28. One end of the transmission gear shaft 14 is connected to the second bevel gear 25, and the other end of the transmission gear shaft 14 is connected to the coupling 28. The coupling 28 is connected to the output shaft of the driver.

[0042] In order to be able to process deeper inner ring grooves, such as Figure 3 、 Figure 4 As shown, the embodiment of the present application can also provide that the other end of the transmission gear shaft 14 is connected to the coupling 28 via an extended transmission shaft 30. When a deeper inner ring groove needs to be processed, an extended transmission shaft can be used to connect the transmission gear shaft 14 and the coupling 28 to achieve the purpose of lengthening the transmission component.

[0043] In order to facilitate the installation of the driver, the embodiment of the present application may provide that the driver is connected to the main sleeve unit through the mounting seat 3.

[0044] In order to facilitate the fixing and connection of the structure provided in the embodiment of the present application to the boring machine, the embodiment of the present application may provide that the mounting seat is connected to an adapter seat 1.

[0045] In order to achieve precise drive output control, the embodiment of the present application may provide that the driver includes a servo motor 29.

[0046] The telescopic tool holder structure of the boring machine provided in the embodiment of the present application is introduced in detail below.

[0047] The telescopic toolholder structure of this boring machine consists of a two-stage telescopic mechanism and a gear-screw drive mechanism. The telescopic sleeve in the telescopic mechanism is positioned and guided by a key and driven by a bevel gear bearing, resulting in excellent guidance, simple and convenient installation, and effective transmission. The two-stage telescopic mechanism, achieved by a primary screw encased within a secondary screw, solves the problem of machining internal surfaces with relatively large radii and large-diameter internal holes.

[0048] like Figure 2 As shown, its composition structure includes an experimental platform adapter 1, a first main sleeve 2, a motor seat 3, a first-level screw 4, a second-level screw 5, a first-level sleeve 6, a second-level sleeve 7, a first-level sleeve retaining ring 8, a first-level sleeve bearing retaining ring 9, a tool mounting cover 10, a screw nut top block 11, a motor bearing village sleeve 12, a transmission gear shaft 13, a motor gear pressing sleeve 14, a key (A) 15, a key (B) 16, a gear key (A) 17, a gear key (B) 18, a protective cover 19, a second main sleeve 20, a thrust ball plane bearing 21, a deep groove ball bearing (61902) 22, a blade 23, a first bevel gear 1 (.5-45) 24, a second bevel gear 1 (.5-50) 25, an angular contact bearing (7200C) 26, a sliding bearing J (FM-0812-09) 27, a coupling 28, and a servo motor 29.

[0049] Among them, keys are used as guides between the secondary sleeve 7 and the primary sleeve 6, and between the primary sleeve 6 and the main sleeve, and the transmission is achieved by the secondary screw 5 covering the primary screw 4 through a servo motor.

[0050] Its working principle is as follows Figure 5 As shown in the figure, install the boring tool on the tool mounting cover of the first-stage sleeve, start the servo motor, and the power of the servo motor is transmitted to the gear shaft through the coupling, and then to the lead screw through the bevel gear. Figure 5 (A) When the motor rotates, the primary screw 4 rotates, and the primary sleeve 6 and the secondary sleeve 7 rise together through the screw nut (inside the secondary screw 5) and rise to Figure 5 (B) position, completing the first-level telescopic state; the external main sleeve retaining ring blocks the first-level sleeve 6, preventing it from rising, and the screw nut and the first-level screw 4 no longer rotate, causing the second-level screw 5 to rotate with the first-level screw 4, and the second-level sleeve 7 to rise, reaching the second-level telescopic state, as shown in FIG. Figure 5 (C).

[0051] This structure consists of a two-stage telescopic sleeve, a bevel gear drive, a toolholder connector, and a motor. The telescopic mechanism utilizes key positioning and guidance to improve positioning accuracy and increase lead. The telescopic mechanism is driven by a motor and bevel gears, achieving two-stage telescoping. When machining deeper inner ring grooves, the drive gear shaft is lengthened and an extended toolholder is used.

[0052] In summary, the telescopic tool holder structure of the boring machine provided by the present application can be telescoped in two stages, does not require repeated installation, and does not require repeated adjustment of coaxiality. It can directly process inner surfaces with relatively large radii and inner holes with large apertures by extending the tool. At the same time, it has a simple structure, is easy to install, can control the telescopic distance, and has good rigidity. It has low production costs, convenient and quick maintenance, high replacement efficiency, good positioning accuracy, and can design blade structures in a non-standard manner to meet different processing requirements. It is very easy to popularize and promote in the processing of inner surfaces with large radii and inner holes with large apertures, providing guarantees for the entire processing method and accuracy, and also providing an effective design method and idea.

[0053] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply the existence of any such actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or device comprising the element.

[0054] Through the description of the above embodiments, it can be seen that those skilled in the art can clearly understand that the present application can be implemented by means of software plus a necessary general hardware platform. Based on this understanding, the technical solution of the present application, or the part that contributes to the prior art, can be embodied in the form of a software product, which can be stored in a storage medium such as ROM / RAM, a magnetic disk, an optical disk, etc., and includes a number of instructions for enabling a computer device (which can be a personal computer, a server, or a network device, etc.) to execute the methods described in various embodiments or certain parts of the embodiments of the present application.

[0055] Each embodiment in this specification is described in a progressive manner. The same or similar parts between the embodiments can be referred to each other. Each embodiment focuses on the differences from other embodiments. In particular, for system or system embodiments, since they are basically similar to method embodiments, the description is relatively simple. For relevant parts, refer to the partial description of the method embodiment. The system and system embodiments described above are merely schematic, wherein the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the modules can be selected according to actual needs to achieve the purpose of the solution of this embodiment. A person of ordinary skill in the art can understand and implement it without expending creative work.

[0056] The above description is only a preferred embodiment of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention are included in the scope of protection of the present invention.

Claims

1. A telescopic tool handle structure for a boring machine, characterized in that: include: Main sleeve unit; A telescopic unit, the telescopic unit comprising a primary lead screw, a secondary lead screw, a primary sleeve, and a secondary sleeve; one end of the secondary sleeve is fitted and connected to the interior of the primary sleeve, the secondary sleeve can slide axially relative to the primary sleeve and cannot move radially; an internal thread is provided on the inner side of the secondary sleeve, one end of the secondary lead screw is fitted and connected to the interior of the secondary sleeve, the inner side of the secondary lead screw is provided with an internal thread, the primary lead screw is fitted and connected to the interior of the secondary lead screw; a boring tool mounting cover is provided on the end of the secondary sleeve away from the primary sleeve; a driving unit connected to the main sleeve unit; In which, one end of the primary sleeve is connected to the interior of the main sleeve unit, and the primary sleeve can slide relative to the main sleeve unit in the axial direction but cannot move in the radial direction; the main sleeve unit is provided with a primary sleeve limit ring; the output end of the drive unit is connected to the primary screw; the drive unit is used to drive the primary screw to rotate so that the primary sleeve is extended from the main sleeve unit, and after the primary sleeve contacts the primary sleeve limit ring, drive the primary screw and the secondary screw to rotate synchronously so that the secondary sleeve is extended from the primary sleeve.

2. The telescopic tool holder structure for a boring machine according to claim 1, characterized in that: The primary sleeve and the main sleeve unit as well as the primary sleeve and the secondary sleeve are connected in a key connection manner.

3. The telescopic tool holder structure for a boring machine according to claim 1, characterized in that: The driving unit includes a driver, a first bevel gear and a second bevel gear meshing with the first bevel gear. The first bevel gear is located at the bottom of the main sleeve unit and is fixedly connected to the primary screw; the second bevel gear is located on the side of the main sleeve unit and is connected to the output end of the driver.

4. The telescopic tool holder structure for a boring machine according to claim 3, characterized in that: The second bevel gear is connected to the output end of the driver through a transmission assembly.

5. The telescopic tool holder structure for a boring machine according to claim 4, characterized in that: The transmission assembly includes a transmission gear shaft and a coupling, one end of the transmission gear shaft is connected to the second bevel gear, the other end of the transmission gear shaft is connected to the coupling, and the coupling is connected to the output shaft of the driver.

6. The telescopic tool holder structure for a boring machine according to claim 5, characterized in that: The other end of the transmission gear shaft is connected to the coupling through an extended transmission shaft.

7. The telescopic tool holder structure for a boring machine according to claim 5, characterized in that: The driver is connected to the main sleeve unit via a mounting seat.

8. The telescopic tool handle structure for a boring machine according to claim 7, characterized in that: The mounting seat is connected with an adapter seat.

9. The telescopic tool holder structure for a boring machine according to any one of claims 4 to 8, characterized in that: The driver includes a servo motor.

10. The telescopic tool holder structure for a boring machine according to claim 1, characterized in that: The main sleeve unit includes a first main sleeve and a second main sleeve that are detachably connected.

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