Ultrasonic-assisted broaching device for horizontal broaching machine

Abstract

The utility model discloses an ultrasonic-assisted tooth broaching device for a horizontal broaching machine, which comprises a knife pouch with a guide groove at the front end and a sliding hole on the peripheral wall; the rear end of the ultrasonic amplitude-change pole is inserted into the guide groove and is provided with a cutter clamping ring cutting groove; the broach is coaxially connected with the front end of the ultrasonic amplitude-change pole; the limiting strip has a limiting state and a releasing state; the sliding sleeve is arranged on the cutter sleeve in a sliding and sleeving manner and can slide to stop the limiting strip from being separated from the cutter clamping ring cutting groove; the elastic piece is used for pushing the limiting strip in the limiting state to move towards the release state. According to the utility model, the limiting strip and the sliding sleeve are used, so that the broach can be quickly clamped and disassembled. Compared with a traditional limiting block, the elastic piece can push the limiting strip in the limiting state to move towards the release state, when dismounting is needed, only the sliding sleeve needs to be pushed, blocking limiting of the limiting strip separating from the cutting groove of the cutter clamping ring is relieved, the limiting strip can automatically relieve limiting of the broach under the action of the elastic piece, operation steps are reduced, and the dismounting efficiency is improved. Therefore, the tool changing efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of metal processing, and in particular to an ultrasonic-assisted broaching device for a horizontal broaching machine. Background Art

[0002] Broaching with a broach is a metal cutting process mainly used for machining internal holes or outer surfaces of various shapes and sizes. The broach for broaching can pass through the workpiece once to complete the machining of multiple cutting surfaces, with high efficiency; broaching is suitable for machining workpieces with complex shapes and strict dimensional requirements and is applicable to mass production.

[0003] The traditional broach is clamped by a limit block. However, when the broach needs to be disassembled and replaced, the limit block will not automatically release the limit on the broach, and the limit block still needs to be operated to move, which is troublesome to operate and affects the tool change efficiency. Summary of the Utility Model

[0004] The utility model aims to solve at least one of the technical problems existing in the prior art. For this purpose, the utility model provides an ultrasonic-assisted broaching device for a horizontal broaching machine, which can facilitate the disassembly and replacement of the tool.

[0005] To achieve the above object, the technical solution adopted by the utility model is as follows:

[0006] An ultrasonic-assisted broaching device for a horizontal broaching machine includes: a tool sleeve with a guiding groove at the front end and a radially extending sliding hole on the peripheral wall, and the inner end of the sliding hole extends to communicate with the guiding groove; an ultrasonic horn with the rear end inserted into the guiding groove and a cutter clamping groove corresponding to the position of the sliding hole; a broach coaxially connected to the front end of the ultrasonic horn; a limiting strip having a limiting state with the inner end inserted into the cutter clamping groove and a releasing state of disengaging from the cutter clamping groove, and being slidably installed in the sliding hole to realize the switching between the limiting state and the releasing state; a sliding sleeve sleeved on the tool sleeve and capable of sliding to block the limiting strip from disengaging from the cutter clamping groove; and an elastic member for pushing the limiting strip in the limiting state towards the releasing state.

[0007] Further, a first connecting disk with a radially protruding rear end is provided at the rear end of the broach, a second connecting disk fitting with the first connecting disk is provided at the front end of the ultrasonic horn, corresponding holes are provided on the first connecting disk and the second connecting disk for connection and fixation by fasteners, a positioning post is provided at the rear end of the broach, and a positioning hole for embedding the positioning post is provided at the front end of the ultrasonic horn.

[0008] Further, a notch groove is provided on the side wall of the sliding hole, an installation block embedded in the notch groove is provided on the side wall of the limiting strip, and the elastic member is a compression spring installed between the installation block and the inner bottom wall of the notch groove.

[0009] Further, a limiting rod is installed on the mounting block, a limiting protrusion is provided on the inner bottom wall of the notch groove, and the compression spring is sleeved on the limiting rod and the limiting protrusion.

[0010] Further, the mounting block is provided with a threaded hole, and a stud threadedly connected to the threaded hole is provided at the outer end of the limiting rod.

[0011] Further, an inner groove is provided on the inner wall of the sliding sleeve, and the outer end of the limiting strip in the released state can be embedded in the inner groove; a conical surface that converges backward toward the center is provided on the rear side wall of the inner groove, so that when the sliding sleeve slides forward, the conical surface can push the limiting strip to slide inward to the limiting state.

[0012] Further, an annular groove recessed backward is provided on the inner side edge of the rear side wall of the inner groove, and a cylindrical surface connected to the inner side of the first conical surface is formed in the annular groove, and the cylindrical surface is used to abut against the outer end of the limiting strip in the limiting state.

[0013] Further, a first chamfer is provided on the rear side edge of the outer end of the limiting strip, and a second chamfer is provided on the inner edge of the front end of the sliding sleeve.

[0014] Further, the tool holder is provided with a sliding shaft section, the sliding hole is provided on the peripheral wall of the sliding shaft section, and the sliding sleeve is used for sleeving on the sliding shaft section.

[0015] Further, a threaded shaft section is provided at the rear end of the sliding shaft section, the diameter of the threaded shaft section is smaller than that of the sliding shaft section, and a limiting nut is threadedly connected to the threaded shaft section.

[0016] The utility model has the following beneficial effects:

[0017] By using the limiting strip and the sliding sleeve, the rapid clamping and disassembly of the broach are realized. Compared with the traditional limiting block, the elastic member can push the limiting strip in the limiting state to move toward the released state. When disassembly is required, only the sliding sleeve needs to be pushed to release the blocking limit of the limiting strip from the cutter clamping groove, and the limiting strip can automatically release the limit on the broach under the action of the elastic member, reducing the operation steps, thereby improving the tool change efficiency. The cooperation between the guiding groove at the front end of the tool holder and the rear end of the ultrasonic horn ensures the coaxiality of the ultrasonic horn and the broach, which helps to improve the accuracy during the machining process. The setting of the ultrasonic horn allows the tool assembly to be used in ultrasonic vibration machining, which can improve the cutting efficiency and machining quality while reducing tool wear.

[0018] In addition to the purposes, features and advantages described above, the utility model has other purposes, features and advantages. The following will refer to the drawings for a further detailed description of the utility model. Description of the Drawings

[0019] The accompanying drawings, which form a part of this application, are used to provide a further understanding of the present utility model. The schematic embodiments and descriptions thereof of the present utility model are used to explain the present utility model and do not constitute an improper limitation to the present utility model. In the drawings:

[0020] Figure 1 is a schematic diagram of the overall structure of an embodiment of the present utility model;

[0021] Figure 2 is Figure 1 a schematic diagram of the disassembled state structure;

[0022] Figure 3 is a partial structure disassembled schematic diagram of an embodiment of the present utility model;

[0023] Figure 4 is a schematic diagram of the structure of a tool holder;

[0024] Figure 5 is a cross-sectional view of a sliding sleeve;

[0025] Figure 6 is a partial structure cross-sectional view of an embodiment of the present utility model;

[0026] Figure 7 is Figure 6 an enlarged view of part A of

[0027] Legend description:

[0028] Tool holder 100, guide groove 110, sliding hole 120, notch groove 121, limit protrusion 122, convex shaft 140;

[0029] Ultrasonic horn 200, cutter clamping and cutting groove 210, second connecting plate 220, positioning hole 221, mounting convex ring 230;

[0030] Pulling tool 300, first connecting plate 310, positioning post 320;

[0031] Limit bar 400, first chamfer 401, mounting block 410, threaded hole 411, limit rod 420, stud 421;

[0032] Sliding sleeve 500, second chamfer 501, inner groove 510, conical surface 511, annular groove 512, cylindrical surface 513;

[0033] Elastic member 600. Detailed implementation manners

[0034] It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0035] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0036] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement conditions between components in a specific posture (as shown in the accompanying drawings). If this specific posture changes, the directional indications will also change accordingly.

[0037] In addition, the descriptions involving "first", "second", etc. in the present invention are only for descriptive purposes, and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present invention.

[0038] Please refer to Figure 1 and Figure 2 , an ultrasonic-assisted broaching device for a horizontal broaching machine provided in a preferred embodiment of the present invention includes a tool sleeve 100, an ultrasonic horn 200, a broach 300, a limiting strip 400, and a sliding sleeve 500.

[0039] A guiding groove 110 is provided at the front end of the tool sleeve 100, and a sliding hole 120 extending radially is provided on the peripheral wall of the tool sleeve 100. The sliding hole 120 extends along the radial direction of the tool sleeve 100, and the inner end of the sliding hole 120 extends to communicate with the guiding groove 110; the rear end of the ultrasonic horn 200 is inserted into the guiding groove 110 and a cutter clamping circumferential groove 210 is provided at a position corresponding to the sliding hole 120. An installation convex ring 230 is provided in the middle of the ultrasonic horn 200, and ultrasonic piezoelectric ceramics are installed on both sides of the installation convex ring 230 to provide ultrasonic vibration. The broach 300 is coaxially connected to the front end of the ultrasonic horn 200.

[0040] The limiting strip 400 has a limiting state and a releasing state. The inner end of the limiting strip 400 in the limiting state is inserted into the cutter clamping circumferential groove 210, and the limiting strip 400 in the releasing state is disengaged from the cutter clamping circumferential groove 210. The limiting strip 400 is slidably installed in the sliding hole 120 to realize the switching between the limiting state and the releasing state; the sliding sleeve 500 is slidably sleeved on the tool sleeve 100; as Figure 7As shown, the limiting strip 400 is in a limiting state, and the sliding sleeve 500 can slide to block the limiting strip 400 from disengaging from the cutter clamping groove 210; the elastic member 600 is used to push the limiting strip 400 in the limiting state to move towards the release state.

[0041] An ultrasonic-assisted broaching device for a horizontal broaching machine in a preferred embodiment provided by the present utility model realizes the rapid clamping and disassembly of the broach by using the limiting strip 400 and the sliding sleeve 500. Compared with the traditional limiting block, the elastic member 600 can push the limiting strip 400 in the limiting state to move towards the release state. When disassembly is required, only the sliding sleeve 500 needs to be pushed to release the blocking limit of the limiting strip 400 from disengaging from the cutter clamping groove 210, and the limiting strip 400 can move to the release state under the action of the elastic member 600 to automatically release the limit on the broach, reducing the operation steps and thus improving the tool change efficiency. The guiding groove 110 at the front end of the tool sleeve 100 cooperates with the rear end of the ultrasonic horn 200 to ensure the coaxiality of the ultrasonic horn 200 and the broach 300, which helps to improve the accuracy during the machining process. The setting of the ultrasonic horn 200 allows the tool assembly to be used in ultrasonic vibration machining, which can improve the cutting efficiency and machining quality while reducing tool wear.

[0042] Refer to Figure 2 , in some embodiments of the present utility model, a first connecting disk 310 with a radially protruding rear end is provided on the broach 300, and a second connecting disk 220 that fits with the first connecting disk 310 is provided at the front end of the ultrasonic horn 200. Corresponding holes are provided on the first connecting disk 310 and the second connecting disk 220 for connection and fixation by fasteners, and the first connecting disk 310 and the second connecting disk 220 facilitate the machining of holes to realize the connection between the broach 300 and the ultrasonic horn 200. A positioning post 320 is provided at the rear end of the broach 300, and a positioning hole 221 for the positioning post 320 to be embedded is provided at the front end of the ultrasonic horn 200. The embedding of the positioning post 320 into the positioning hole 221 plays an effect of coaxial positioning, improving the machining accuracy.

[0043] Refer to Figure 3 and Figure 4 , in some embodiments of the present utility model, a notch groove 121 is provided on the side wall of the sliding hole 120, an installation block 410 that is embedded in the notch groove 121 is provided on the side wall of the limiting strip 400, the elastic member 600 is a compression spring installed between the installation block 410 and the inner bottom wall of the notch groove 121, and the notch groove 121 provides installation and movement space for the installation block 410 and the compression spring. An elastic acting force is provided to the installation block 410 and the limiting strip 400 through the compression spring, so that when not blocked by the sliding sleeve 500, it can automatically disengage from the cutter clamping groove 210, facilitating the subsequent disassembly and replacement of the ultrasonic horn 200.

[0044] Refer to Figure 7, in a further embodiment of the present utility model, the mounting block 410 is provided with a limiting rod 420, the inner bottom wall of the notch groove 121 is provided with a limiting protrusion 122, the compression spring is sleeved on the limiting rod 420 and the limiting protrusion 122, and the limiting rod 420 and the limiting protrusion 122 are used to realize the installation limit of the compression spring, so that its shape is stable. In addition, there is a distance between the limiting rod 420 and the limiting protrusion 122 to avoid structural interference.

[0045] Referring to Figure 3 , in a further embodiment of the present utility model, the mounting block 410 is provided with a threaded hole 411, and the outer end of the limiting rod 420 is provided with a stud 421 threadedly connected to the threaded hole 411, so as to realize the detachable connection between the limiting rod 420 and the mounting block 410, which is convenient for processing and reduces the processing difficulty.

[0046] Referring to Figures 5 to 7 , in a further embodiment of the present utility model, the inner wall of the sliding sleeve 500 is provided with an inner groove 510, and the outer end of the limiting strip 400 in the released state can be embedded in the inner groove 510, so that the limiting strip 400 can move outward to the released state to avoid structural interference; the rear side wall of the inner groove 510 is provided with a conical surface 511 that converges backward toward the center, so that when the sliding sleeve 500 slides forward, the conical surface 511 can push the limiting strip 400 to slide inward to the limiting state. Thus, when the sliding sleeve 500 is pushed, the limiting strip 400 can be driven to slide inward, which is convenient for installation. It can be understood that when the limiting strip 400 is in the limiting state, the outer end of the limiting strip 400 can also partially extend out of the sliding hole 120.

[0047] Referring to Figures 5 to 7 , in a further embodiment of the present utility model, the inner side edge of the rear side wall of the inner groove 510 is provided with an annular groove 512 that is recessed backward, and the annular groove 512 forms a cylindrical surface 513 that is connected to the inner side of the first conical surface 511. The cylindrical surface 513 is used to abut against the outer end of the limiting strip 400 in the limiting state, that is, the outer end of the limiting strip 400 in the limiting state will partially extend out of the sliding hole 120 and abut against the cylindrical surface 513. At this time, the limiting strip 400 cannot move inward anymore due to the blocking of the ultrasonic horn 200. When the ultrasonic horn 200 is not disassembled, a part of the structure of the limiting strip 400 will always extend out of the sliding hole 120, so that the outer end of the limiting strip 400 can only slide in the inner groove 510 and the annular groove 512, thereby also limiting the sliding range of the sliding sleeve 500. In addition, the contact between the outer end of the limiting strip 400 and the cylindrical surface 513 also prevents the generation of axial force to push the sliding sleeve 500 to move axially, making the position of the sliding sleeve 500 relatively stable.

[0048] In some embodiments of the present utility model, the rear side edge of the outer end of the limiting strip 400 is provided with a first chamfer 401, and the inner edge of the front end of the sliding sleeve 500 is provided with a second chamfer 501, so as to reduce structural interference during installation.

[0049] In some embodiments of the present utility model, the tool holder 100 is provided with a sliding shaft section. The sliding hole 120 is arranged on the peripheral wall of the sliding shaft section. The sliding sleeve 500 is slidably sleeved on the sliding shaft section. The outer peripheral wall of the sliding shaft section is smooth so that the sliding sleeve 500 can slide smoothly.

[0050] As Figure 3 shown, a convex shaft 140 is provided at the front end of the tool holder 100. The convex shaft is provided with an annular groove with an opening facing backward. The annular groove wraps the front end of the sliding sleeve 500, and the front end wall of the annular groove limits the forward movement range of the sliding sleeve 500.

[0051] In a further embodiment of the present utility model, a threaded shaft section is provided at the rear end of the sliding shaft section. The diameter of the threaded shaft section is smaller than that of the sliding shaft section. A limit nut is threadedly connected to the threaded shaft section to limit the sliding sleeve 500, so that the sliding sleeve 500 can fix the limit strip 400 in a limited state. Of course, in some other embodiments, the sliding sleeve 500 can be driven to slide by a driving mechanism, such as a telescopic cylinder or a telescopic oil cylinder, so as to improve the degree of automation.

[0052] The above are only the preferred embodiments of the present utility model and are not used to limit the present utility model. For those skilled in the art, the present utility model can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model shall be included in the protection scope of the present utility model.

Claims

1. An ultrasonic-assisted tooth-pulling device for a horizontal broaching machine, characterized in that: include: The knife sleeve (100) has a guide groove (110) at its front end and a radially extending sliding hole (120) at its peripheral wall, wherein the inner end of the sliding hole (120) extends to communicate with the guide groove (110); The ultrasonic horn (200) has a rear end inserted into the guide groove (110) and a knife ring cutting groove (210) is provided at a position corresponding to the sliding hole (120); A broach (300) is coaxially connected to the front end of the ultrasonic horn (200); The limiting strip (400) has a limiting state in which the inner end is inserted into the knife ring cutting groove (210) and a release state in which the inner end is separated from the knife ring cutting groove (210), and is slidably mounted on the sliding hole (120) to achieve switching between the limiting state and the release state; A sliding sleeve (500) is arranged on the knife sleeve (100) and can slide to prevent the limiting strip (400) from being separated from the knife ring cutting groove (210); The elastic member (600) is used to push the limiting strip (400) in the limiting state to move toward the releasing state.

2. The ultrasonic-assisted tooth-pulling device for a horizontal broaching machine according to claim 1, characterized in that: The rear end of the broach (300) is provided with a radially protruding first connection disk (310), the front end of the ultrasonic horn (200) is provided with a second connection disk (220) that fits the first connection disk (310), the first connection disk (310) and the second connection disk (220) are provided with corresponding holes for connection and fixation by fasteners, the rear end of the broach (300) is provided with a positioning column (320), and the front end of the ultrasonic horn (200) is provided with a positioning hole (221) for the positioning column (320) to be embedded.

3. The ultrasonic-assisted tooth-pulling device for a horizontal broaching machine according to claim 1, characterized in that: The side wall of the sliding hole (120) is provided with a notch groove (121), the side wall of the limiting strip (400) is provided with a mounting block (410) embedded in the notch groove (121), and the elastic member (600) is a compression spring installed between the mounting block (410) and the inner bottom wall of the notch groove (121).

4. The ultrasonic-assisted tooth-pulling device for a horizontal broaching machine according to claim 3, characterized in that: The mounting block (410) is installed with a limiting rod (420), the inner bottom wall of the notch groove (121) is provided with a limiting protrusion (122), and the compression spring is sleeved on the limiting rod (420) and the limiting protrusion (122).

5. The ultrasonic-assisted tooth-pulling device for a horizontal broaching machine according to claim 4, characterized in that: The mounting block (410) is provided with a threaded hole (411), and the outer end of the limiting rod (420) is provided with a stud (421) threadedly connected to the threaded hole (411).

6. The ultrasonic-assisted tooth-pulling device for a horizontal broaching machine according to claim 1, characterized in that: The inner wall of the sliding sleeve (500) is provided with an inner groove (510), and the outer end of the limiting strip (400) in the release state can be embedded in the inner groove (510); the rear side wall of the inner groove (510) is provided with a conical surface (511) that converges backwards toward the center, so that when the sliding sleeve (500) slides forward, the conical surface (511) can push the limiting strip (400) to slide inwards to the limiting state.

7. The ultrasonic-assisted tooth-pulling device for a horizontal broaching machine according to claim 6, characterized in that: The inner edge of the rear side wall of the inner groove (510) is provided with an annular groove (512) recessed toward the rear, and the annular groove (512) is formed with a cylindrical surface (513) connected to the inner side of the first conical surface (511), and the cylindrical surface (513) is used to abut against the outer end of the limiting strip (400) in the limiting state.

8. The ultrasonic-assisted tooth-pulling device for a horizontal broaching machine according to claim 7, characterized in that: The rear edge of the outer end of the limiting strip (400) is provided with a first chamfer (401), and the inner edge of the front end of the sliding sleeve (500) is provided with a second chamfer (501).

9. The ultrasonic-assisted tooth-pulling device for a horizontal broaching machine according to claim 1, characterized in that: The knife sleeve (100) is provided with a sliding shaft section (130), the sliding hole (120) is provided on the peripheral wall of the sliding shaft section (130), and the sliding sleeve (500) is slidably provided on the sliding shaft section (130).

10. The ultrasonic-assisted tooth-pulling device for a horizontal broaching machine according to claim 9, characterized in that: A threaded shaft section (131) is provided at the rear end of the sliding shaft section (130). The diameter of the threaded shaft section (131) is smaller than that of the sliding shaft section (130). A limit nut (132) is threadedly connected to the threaded shaft section (131).

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