Broaching device for arc-shaped mortise

Abstract

The invention discloses a broaching device for an arc mortise, and relates to the field of machining, the broaching device comprises a broaching tool disc, a turbine disc driving mechanism and a turbine disc clamping mechanism, the broaching tool disc is connected with the broaching tool disc driving mechanism, the broaching tool disc comprises a broaching tool disc base body and a sliding broaching tool handle, and a plurality of linear guide rails are arranged on the surface of the broaching tool disc base body; a lead screw is installed in the linear guide rail, and one end of the lead screw is connected with a broach driving mechanism. The sliding broach handle is in threaded fit with the lead screw, and one or more broaches are mounted on the sliding broach handle; the turbine disc driving mechanism comprises a turbine disc rotating mechanism and a turbine disc telescoping mechanism, the turbine disc is installed on the turbine disc rotating mechanism, and the turbine disc rotating mechanism is connected with the turbine disc telescoping mechanism; the turbine disc clamping mechanism comprises a two-way sliding rail structure, and the turbine disc telescopic mechanism is fixed to the two-way sliding rail structure. The arc-shaped mortise matched with the arc radius of the mortise can be accurately machined, and the machining efficiency and quality are improved.

Description

Technical Field

[0001] The invention relates to the field of mechanical processing, and in particular to a broaching device for arc-shaped tenon grooves. Background Art

[0002] The broaching process is to make a linear movement of the broach along the surface of the workpiece, cutting the material layer by layer, and finally forming the desired shape and size. It is mainly used to process internal and external surfaces of various shapes, such as keyways, splines, square holes, etc. At present, the arc mortise and tenon broaching process has also been studied, and the disc-type base broach with circularly arranged broaches has become an important research direction. At present, the processing of arc-shaped turbine disc mortise and tenon is mostly based on milling, grinding and electrochemical processing, but these processing methods have the problems of complex process and low efficiency. For example:

[0003] CN114918482A discloses a processing technology for a wide tenon groove of a turbine disk, including: using a test block of the same material as the turbine disk to process a tenon groove, firstly using slow wire cutting to cut out the tenon groove, reserving a single-side margin, and then using high-speed fine broaching to the final size, checking whether the size and technical conditions of the test block tenon groove meet the design requirements of a single tenon groove, so as to verify the correctness of the slow wire cutting program and the fine broaching tool; processing two grooves in symmetrical positions on a large test piece, repeating the process of slow wire cutting and high-speed fine broaching, and checking the correctness of the distance from the tenon groove working surface to the center of the turbine disk and the inclination angle; after the test block and the large test piece are processed to be qualified, the turbine disk is formally processed, using the same slow wire cutting and high-speed fine broaching process, and all the tenons are processed to the final size; and then processing the annular groove at the tenon groove notch. This process combines wire cutting and broaching to process the tenon groove, but the processing efficiency is not high, and the processing method needs to be changed during the processing.

[0004] CN116728089A discloses a turbine disc tenon-groove laser cutting-broaching composite processing technology and equipment, including a frame, a workbench mounted on the frame, a laser cutting module, a broaching module, a thermal imager and a cooling device; the workbench is used to fix the turbine disc blank and drive it to rotate around the axis; the laser cutting module is used to perform preliminary cutting on the turbine disc blank; the broaching module is used to perform further cutting on the turbine disc blank after laser cutting; the thermal imager is used to monitor the temperature of the turbine disc blank; the cooling device is used to cool the turbine disc blank after laser cutting. This process combines the processing methods of laser cutting and broaching, but heat accumulation is easy to occur during the laser cutting process, which can easily lead to surface burns and the processing accuracy is difficult to ensure.

[0005] CN204818258U discloses a broaching machine and a broach for processing circular arc grooves, including a broach, a broach driving mechanism for driving the broach to move, and a workpiece positioning mechanism for positioning a workpiece, wherein the broach includes a turntable and a tooth portion connected to the turntable; the tooth portion includes a plurality of teeth distributed between a first end of the tooth portion and a second end of the tooth portion; the broach driving mechanism is used to drive the broach to rotate around a first axis to process a circular arc groove on the workpiece. The teeth are integrated with the machine tool, and the broach needs to be replaced as a whole after being worn, which is inconvenient to install. The cutting speed is limited due to frequent adjustment of the tool position and cutting parameters, resulting in low processing efficiency; and the tool needs to be replaced as a whole after being worn, which is costly; in addition, it is impossible to realize the broaching of circular arc tenon grooves of different sizes.

[0006] Therefore, the main problems of current turbine disc tenon and groove processing include: 1. The current arc tenon and groove processing mainly adopts milling processing, which has low processing efficiency, poor tenon and groove processing accuracy and surface integrity; 2. Due to factors such as the arc tenon and groove arc and chord length deviation, depth and width dimensions are prone to fluctuation, the existing broaching tools are not suitable for processing arc-shaped tenon and groove. Summary of the invention

[0007] In view of the deficiencies in the prior art, the object of the present invention is to provide a circular arc mortise broaching device which can accurately machine a circular arc mortise that matches the mortise arc radius, thereby improving machining efficiency and quality.

[0008] In order to achieve the above object, the present invention is implemented through the following technical solutions:

[0009] An embodiment of the present invention provides a broaching device for an arc-shaped tenon groove, comprising:

[0010] A broaching disc connected to a broaching disc driving mechanism, the broaching disc comprising a broaching disc base and a sliding broaching handle, a plurality of linear guide rails are arranged on the surface of the broaching disc base, a lead screw is installed in the linear guide rail, one end of the lead screw is connected to the broaching disc driving mechanism; the sliding broaching handle is threadedly matched with the lead screw, and one or more broaches are installed on the sliding broaching handle;

[0011] The turbine disk driving mechanism comprises a turbine disk rotating mechanism and a turbine disk telescopic mechanism, the turbine disk is mounted on the turbine disk rotating mechanism, and the turbine disk rotating mechanism is connected to the turbine disk telescopic mechanism;

[0012] The turbine disc clamping mechanism comprises a bidirectional slide rail structure, and the turbine disc telescopic mechanism is fixed to the bidirectional slide rail structure.

[0013] As a further implementation, the linear guide rails are arranged radially along the broach disc base, and a plurality of linear guide rails are evenly distributed circumferentially along the broach disc base.

[0014] As a further implementation, the broach drive mechanism includes a transmission gear, a drive gear and a first drive motor, the transmission gear is connected to one end of the lead screw, and the transmission gear is meshed with the drive gear, and the drive gear is connected to the first drive motor.

[0015] As a further implementation, the sliding broach handle includes a handle base, and two baffles are arranged opposite to each other on the top of the handle base, and a broach installation space is formed between the two baffles.

[0016] As a further implementation, a groove is formed on the top of the handle of the sliding broach, a plurality of partitions are distributed in the groove, and positioning grooves are formed between adjacent partitions; the broach is arranged in the positioning groove.

[0017] As a further implementation, the broach is a multi-tool structure, including rough cutting teeth, transition teeth and fine cutting teeth arranged in sequence.

[0018] As a further implementation, a screw rod is provided at the top of the sliding broach handle, and a threaded hole matched with the screw rod is provided at the bottom of the broach.

[0019] As a further implementation, the sliding broach handle includes a handle base, a spring jacket and a spring chuck, the handle base is threadedly connected to the spring jacket, a plurality of spring chucks are clamped on the inner side of the spring jacket, and form an installation space for the broach handle.

[0020] As a further implementation, a limiting groove is provided on the inner wall of the spring jacket, and a limiting ring matched with the limiting groove is provided on the spring chuck.

[0021] As a further implementation, the turbine disc telescopic mechanism comprises an inner cylinder and an outer cylinder which are sleeved together, the inner side of the inner cylinder is threadedly connected to a screw rod, and the screw rod passes through the outer cylinder to connect to a driving motor;

[0022] Wherein, the inner cylinder is fixed to the turbine disk, and the outer cylinder is fixed to the turbine disk clamping mechanism.

[0023] The beneficial effects of the present invention are as follows:

[0024] (1) The present invention comprises a broaching disc, a turbine disc driving mechanism and a turbine disc clamping mechanism. The broaching disc can rotate under the action of the broaching disc driving mechanism. Under the joint action of the turbine disc driving mechanism and the turbine disc clamping mechanism, the turbine disc can perform three-dimensional spatial motion in addition to its rotation. Thus, the broaching disc and the broach can cooperate to achieve stable processing of the arc-shaped mortise and tenon.

[0025] (2) The broaching disc of the present invention itself has a circular contour. By controlling the rotation and feed motion of the broaching disc, a circular arc-shaped tenon groove that matches the circular arc radius of the tenon groove can be accurately processed. For circular arc tenons with different curvature radii, it is only necessary to select a broach with a matching radius. When the broaching disc processes the circular arc-shaped tenon groove, its cutting edge cuts continuously in the circumferential direction. The continuous cutting method can make the processed surface smoother.

[0026] (3) The broaching disc of the present invention is provided with a plurality of linear guide rails, which cooperate with the sliding broaching tool holder through a lead screw inside the linear guide rail, and the lead screw connects the transmission gear and the driving gear. Under the action of the gear meshing and the lead screw transmission, the stable displacement of the sliding broaching tool holder is achieved, thereby achieving the adjustment of the radius of the circular arc tenon groove of the turbine disc to meet the processing requirements of the circular arc tenon groove of the turbine disc of different sizes; and the sliding broaching tool holder is provided in various forms, and one or more broaches can be installed, thereby increasing the scope of application of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The accompanying drawings in the specification, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.

[0028] Figure 1 is a schematic diagram of the overall structure of a broaching device according to one or more embodiments of the present invention;

[0029] Figure 2 is an exploded view of a broaching disc drive mechanism according to one or more embodiments of the present invention;

[0030] Figure 3 is an exploded view of a turbine disk drive mechanism according to one or more embodiments of the present invention;

[0031] Figure 4 is an exploded view of a turbine disk clamping mechanism according to one or more embodiments of the present invention;

[0032] FIG5( a ) is a schematic diagram of the structure of a broaching disc according to one or more embodiments of the present invention;

[0033] FIG5( b ) is a schematic diagram of the meshing of a transmission gear and a driving gear according to one or more embodiments of the present invention;

[0034] FIG5( c ) is a front view of the broach of Embodiment 1 of the present invention;

[0035] FIG5( d ) is a perspective view of the broach of Embodiment 1 of the present invention;

[0036] FIG6( a ) is a schematic diagram of the installation of a lead screw and a linear guide rail according to one or more embodiments of the present invention;

[0037] FIG6( b ) is a schematic diagram of the installation of a sliding broach handle and a lead screw according to one or more embodiments of the present invention;

[0038] FIG. 7( a ) is a schematic diagram of a base structure of a broach disc according to one or more embodiments of the present invention;

[0039] FIG7( b ) is a partial schematic diagram of a linear guide rail according to one or more embodiments of the present invention;

[0040] FIG8( a ) is a perspective view of a sliding broach handle according to Embodiment 1 of the present invention;

[0041] FIG8( b ) is a top view of the sliding broach handle of Example 1 of the present invention;

[0042] Fig. 9 is a schematic diagram of a driving gear structure according to one or more embodiments of the present invention;

[0043] Fig.10 is a schematic diagram of the structure of a screw sleeve according to one or more embodiments of the present invention;

[0044] FIG. 11( a ) is an isometric view of an inner cylinder according to one or more embodiments of the present invention;

[0045] FIG11( b) is a cross-sectional view of an inner cylinder according to one or more embodiments of the present invention;

[0046] FIG. 12( a ) is an isometric view of an outer cylinder according to one or more embodiments of the present invention;

[0047] FIG12( b) is a cross-sectional view of an outer cylinder according to one or more embodiments of the present invention;

[0048] Fig.13 is a schematic diagram of the broach structure of embodiment 2 of the present invention;

[0049] FIG. 14( a ) is a front view of the installation of the broach and the sliding broach handle of Example 2 of the present invention;

[0050] FIG. 14( b ) is a side view of the installation of the broach and the sliding broach handle of Example 2 of the present invention;

[0051] FIG. 14( c ) is a top view of the installation of the broach and the sliding broach handle of Example 2 of the present invention;

[0052] FIG15( a ) is a perspective view of a sliding broach handle according to Embodiment 2 of the present invention;

[0053] FIG15( b ) is a top view of the sliding broach handle of Example 2 of the present invention;

[0054] Fig.16 is a schematic diagram of the installation of a broach according to Embodiment 3 of the present invention;

[0055] Fig.17 1 is a schematic diagram of the structure of a sliding broach handle according to Embodiment 3 of the present invention;

[0056] Fig.18 is a schematic diagram of the broach structure of embodiment 3 of the present invention;

[0057] Fig.19 Schematic diagram of the structure of the sliding broach handle according to Embodiment 4 of the present invention;

[0058] FIG20( a ) is a schematic diagram of the structure of a handle base according to Embodiment 4 of the present invention;

[0059] FIG20( b) is a cross-sectional view of the handle base of Example 4 of the present invention;

[0060] FIG. 21( a ) is a schematic diagram of the spring jacket structure of Example 4 of the present invention;

[0061] FIG21( b) is a cross-sectional view of a spring jacket according to Embodiment 4 of the present invention;

[0062] Fig. 22 It is a schematic diagram of the broach structure of embodiment 4 of the present invention.

[0063] FIG. 23( a ) is a front view of a spring chuck according to Embodiment 4 of the present invention;

[0064] FIG23( b) is a side view of a spring chuck according to Embodiment 4 of the present invention;

[0065] FIG23( c ) is an isometric view of a spring chuck according to Embodiment 4 of the present invention;

[0066] Among them, I, the broaching disc, II, the turbine disc driving mechanism, III, the turbine disc clamping mechanism;

[0067] I-1, screws, I-2, cover plate, I-3, drive gear, I-4, flange, I-5, broach base, I-6, first drive motor, I-7, bearing, I-8, transition shaft, I-9, coupling, I-10, reducer, I-11, second drive motor, I-12, encoder, I-13, broach, I-14, transmission gear, I-15, positioning hole, I-16, broach end face, I-17, set screw, I-18, shaft end retaining ring, I-19, mounting hole, I-20, sliding broach handle, I -21, axial positioning hole, I-22, lead screw, I-23, spherical bearing, I-24, linear guide, I-25, lead screw sleeve, I-26, partition, I-27, positioning groove, I-28, positioning hole, I-29, rough cutting teeth, I-30, transition teeth, I-31, fine cutting teeth, I-32, screw, I-33, external thread, I-34, internal thread, I-35, spring collet, I-36, limit ring, I-37, spring chuck end face, I-38, spring chuck, I-39, tool handle, I-40, limit groove;

[0068] II-1, cover plate, II-2, turbine disk, II-3, vibration sensor, II-4, flange, II-5, third drive motor, II-6, controller, II-7, inner cylinder, II-8, threaded rod, II-9, outer cylinder, II-10, universal joint coupling, II-11, fourth drive motor;

[0069] III-1, transverse slide rail, III-2, slider, III-3, longitudinal slide rail, III-4, support plate, III-5, connecting hole. DETAILED DESCRIPTION

[0070] It should be noted that the following detailed descriptions are illustrative and intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used in the present invention have the same meanings as those commonly understood by those skilled in the art to which the present invention belongs.

[0071] Embodiment 1:

[0072] This embodiment provides a broaching device for an arc-shaped tenon groove, such as Figure 1 and Figure 2 As shown, it includes a broaching disc I, a turbine disc driving mechanism II and a turbine disc clamping mechanism III. The broaching disc I is connected to the turbine disc driving mechanism II, the turbine disc driving mechanism II is installed on the turbine disc clamping mechanism III, and the turbine disc clamping mechanism III is arranged on one side of the broaching disc I.

[0073] The upper surface of the broaching disc I is provided with a plurality of evenly distributed linear guides I-24, which are arranged along the radial direction of the broaching disc I, and a lead screw I-22 is installed in the linear guide I-24, and the sliding broaching handle I-20 is threadedly matched with the lead screw I-22 to form a lead screw nut mechanism; the broach I-13 is assembled on the sliding broaching handle I-20. The broach I-13 can be a single blade structure, that is, only one broach I-13 blade is installed on each sliding broaching handle I-20 to realize the overall broaching of the arc-shaped tenon groove; of course, in other embodiments, the broach I-13 can also be a multi-blade structure, thereby improving the processing efficiency; or, the broach I-13 can be a mixed blade structure, and different numbers of blades are set according to different broaching allowances, thereby improving the broaching efficiency and broaching accuracy.

[0074] When broaching circular arc tenons with different radii, the lead screw I-22 is driven to rotate, so that the broaching tool I-13 is fed along with the sliding broaching tool handle I-20 on the linear guide rail I-24, and the broaching action is performed after the broaching tool I-13 is moved to the required radius position; thereby, the radius of the circular arc tenon of the turbine disk II-2 can be adjusted to meet the processing requirements of the circular arc tenon of the turbine disk II-2 of different sizes.

[0075] The broaching disc I is connected to the broaching disc driving mechanism. When it is detected that the turbine disc II-2 moves to the set position, the broaching disc driving mechanism drives the broaching disc I to rotate at the set speed for broaching. Figure 2 As shown, the broaching disc driving mechanism includes a second driving motor I-11 and a reducer I-10, the reducer I-10 is installed at the output end of the second driving motor I-11, the reducer I-10 is connected to one end of the transition shaft I-8 through a coupling I-9, and the other end of the transition shaft I-8 is connected to the broaching disc I through a bearing I-7. In this embodiment, the second driving motor I-11 adopts a servo motor and is equipped with an encoder I-12.

[0076] As shown in FIG. 6( a ) and FIG. 6( b ), a screw sleeve I-25 is provided in the linear guide rail I-24. Fig.10 As shown, its cross section is semicircular; the lead screw I-22 cooperates with the lead screw sleeve I-25 through the joint bearing I-23, so that the lead screw I-22 can rotate in the linear guide rail I-24. In this embodiment, the installation accuracy of the lead screw I-22 is controlled within ±0.05mm, so that the rotation center of the lead screw I-22 coincides with the axis of the entire transmission system.

[0077] The sliding broach handle I-20 can be a clamping type or an external thread type, and a suitable sliding broach handle I-20 can be selected according to different materials, broaching parameters, etc. In this embodiment, as shown in Figures 8(a) and 8(b), the sliding broach handle I-20 includes a handle base, the bottom of the handle base is provided with a thread that matches the lead screw I-22, and two baffles are arranged on the top of the handle base, and a broach installation space is formed between the two baffles; the baffles are arranged in the axial direction of the lead screw I-22. The other direction perpendicular to the baffle installation direction (the radial direction of the lead screw I-22) is a raised structure, which cooperates with the slot on the side wall of the linear guide rail I-24 (as shown in Figures 7(a) and 7(b)).

[0078] When assembled with the broach I-13, the side without the baffle is tightly fitted with the broach disk base I-5, and the side with the baffle tightly wraps the broach I-13, and the broach I-13 is fixed to the handle base by screws. The broach I-13 is evenly distributed around the center of the broach disk I, as shown in Figure 5(c) and Figure 5(d). The two sides of the broach I-13 are broach end faces I-16. The bottom handle position of the broach I-13 is provided with a mounting hole I-19, which corresponds to the axial positioning hole I-21 of the sliding broach handle I-20, and then connected by a connector. The broach end face I-16 depends on the arc-shaped mortise and tenon to be processed. It can be an arc shape, or a complex shape such as a gradient arc, a three-dimensional arc surface, etc.

[0079] As shown in Fig. 5(a) and Fig. 5(b), the lead screw I-22 is connected to the transmission gear I-14, and shaft end retaining rings I-18 are provided at both ends of the transmission gear I-14. The shaft end retaining rings I-18 are fixed by set screws I-17, and the set screws I-17 can take anti-loosening measures. Each transmission gear I-14 is meshed with the driving gear I-3, as shown in Fig. Fig. 9 As shown, the driving gear I-3 is circular as a whole, with a positioning hole I-15 in the center, and gear teeth are provided on the edge of the driving gear I-3, and the transmission gear I-14 is meshed with the gear teeth; the driving gear I-3 is connected to the first driving motor I-6, and the transmission gear I-14, the driving gear I-3 and the first driving motor I-6 constitute a broach driving mechanism, and the first driving motor I-6 drives the driving gear I-3 to rotate, and drives the transmission gear I-14 to rotate under the meshing action, thereby rotating the lead screw I-22.

[0080] like Figure 2 As shown, a cover plate I-2 is provided on the upper side of the driving gear I-3, and a flange plate I-4 is provided on the lower side. The cover plate I-2, the driving gear I-3 and the flange plate I-4 are connected by screws I-1. The flange plate I-4 is fixedly connected to the first driving motor I-6, and the first driving motor I-6 is arranged at the end surface position of the transition shaft I-8 to ensure the concentricity and stability of the entire driving device.

[0081] The turbine disc driving mechanism II includes a turbine disc rotating mechanism and a turbine disc telescopic mechanism. The turbine disc II-2 is installed on the turbine disc rotating mechanism, and the turbine disc rotating mechanism is connected to the turbine disc telescopic mechanism, so that the turbine disc II-2 can be rotated and the position of the turbine disc II-2 can be changed in the horizontal direction. Figure 3 As shown, the turbine disk rotation mechanism of this embodiment is realized by the third drive motor II-5, the third drive motor II-5 is connected to the flange II-4, the turbine disk II-2 is installed between the flange II-4 and the cover plate II-1, and the turbine disk II-2 is driven to rotate by the third drive motor II-5.

[0082] The turbine disc telescopic mechanism includes an inner cylinder II-7, an outer cylinder II-9 and a threaded rod II-8, and one end of the inner cylinder II-7 is inserted into the outer cylinder II-9; as shown in Figures 12(a) and 12(b), the outer cylinder II-9 is provided with a accommodating chamber that cooperates with the inner cylinder II-7, and a through hole connected to the accommodating chamber; as shown in Figures 11(a) and 11(b), the inner cylinder II-7 is a cylindrical structure as a whole, and a through hole is opened in the center of the inner cylinder II-7; the threaded rod II-8 passes through the through hole of the inner cylinder II-7 and the through hole of the outer cylinder II-9, and is connected to the fourth drive motor II-11 through a universal joint coupling II-10 provided on the outside of the outer cylinder II-9. Among them, the through hole is a threaded hole, so that the inner cylinder II-7 and the threaded rod II-8 form a threaded fit. When the fourth drive motor II-11 drives the threaded rod II-8 to rotate, the inner cylinder II-7 is extended and retracted relative to the outer cylinder II-9, thereby changing the horizontal position of the turbine disk II-2, that is, by controlling the telescopic movement of the turbine disk telescopic mechanism, the turbine disk II-2 is driven to achieve feeding and retracting, thereby meeting the needs of different processing stages.

[0083] It can be understood that in other embodiments, the turbine disk telescopic mechanism can also be implemented in other ways.

[0084] The turbine disk II-2 is equipped with a vibration sensor II-3. The vibration sensor II-3 and the third drive sensor II-8 are respectively connected to the controller II-6 through wires. The vibration sensor II-3 detects the vibration state of the turbine disk II-2. The controller II-6 receives the signal and feeds it back to the third drive sensor II-8. The third drive sensor II-8 adjusts the rotation speed of the turbine disk II-2 or stops the processing process.

[0085] like Figure 4As shown, the turbine disc clamping mechanism III includes a bidirectional slide rail structure, wherein the bidirectional slide rail structure includes a transverse slide rail III-1 and a longitudinal slide rail III-3, the longitudinal slide rail III-3 is slidably connected to the transverse slide rail III-1 through a slider III-2, and the support plate III-4 is slidably connected to the longitudinal slide rail III-3; the support plate III-4 is provided with a connecting hole III-5, the connecting hole III-5 is adapted to the diameter of the outer cylinder II-9, the outer cylinder II-9 is installed in the connecting hole III-5 and the axis is kept consistent, so that the turbine disc II-2 can move in the transverse and longitudinal directions. After the turbine disc II-2 is installed in the turbine disc clamping mechanism III, the turbine disc II-2 is controlled to move to the feed position of the broaching disc I.

[0086] The working process of the broaching device in this embodiment is as follows:

[0087] Step 1: Clean the surface of the workpiece to be processed.

[0088] Step 2: Installation:

[0089] Install the broach I-13 on the broach disc I, install the turbine disc II-2 on the turbine disc clamping mechanism III, and check the installation accuracy.

[0090] Step 3: Broaching process:

[0091] Move the turbine disk II-2 to the initial broaching position of the broaching disk I; the first drive motor I-6 moves the broach I-13 to the required radius for circular arc tenon broaching through the engagement of the transmission gear I-14 and the drive gear I-3, and sets the broaching parameters; start the broaching disk I, and complete the first circular arc tenon broaching after the broaching disk I rotates one circle; then the turbine disk II-2 rotates a certain angle to the next tenon to be processed, and drives the broaching disk I to rotate for circular arc tenon broaching, and repeats the above steps until all tenon broaching is completed.

[0092] Among them, the broaching parameters include broaching feed speed and broaching depth, which are determined according to the turbine disk II-2 material and the mortise and tenon processing requirements; in this embodiment, the broaching stage feed speed is set to 2-20m / min; and the cutting depth is set to 0.1-1mm.

[0093] The broaching disc I of this embodiment has a circular profile. By controlling the rotation and feed motion of the broaching disc I, a circular arc-shaped tenon matching the arc radius of the tenon can be accurately processed. For circular arc tenons with different curvature radii, it is only necessary to select a broach I-13 with a matching radius. When the broach I-13 processes the circular arc-shaped tenon, its cutting edge continuously cuts in the circumferential direction. The continuous cutting method can make the processed surface smoother. Compared with some broaches with non-broaching disc structures, due to the more uniform mass distribution, the vibration generated during the cutting process is relatively small, and the balance during rotation is better.

[0094] The turbine disk clamping mechanism III of this embodiment cooperates with the turbine disk driving mechanism II to realize the linear movement of the three-dimensional space coordinate axis, that is, the precise displacement of the turbine disk II-2 in the vertical direction, horizontal direction and horizontal direction; the turbine disk II-2 also has rotational movement, thereby realizing all-round movement in space.

[0095] Embodiment 2:

[0096] The present embodiment provides a broaching device for an arc-shaped tenon groove, as shown in FIG. 15( a) and FIG. 15( b). In the present embodiment, the sliding broach handle I-20 includes not only a handle base but also a broach mounting seat. The top of the broach mounting seat is grooved, and a plurality of partitions I-26 are evenly distributed in the groove. Positioning grooves I-27 are formed between adjacent partitions I-26. Figure 14(a)-Figure 14(c) As shown, the broach I-13 is installed in the positioning groove I-27, that is, the sliding broach handle I-20 of this embodiment is equipped with multiple broaches I-13.

[0097] like Fig.13 As shown, the teeth of the broach I-13 are divided into rough cutting teeth I-29, transition teeth I-30 and fine cutting teeth I-31. The overall tooth structure of the rough cutting teeth is triangular, which can be further divided and subdivided into multiple blades for quickly removing most of the excess on the workpiece. The transition teeth I-30 are located between the rough cutting teeth I-29 and the fine cutting teeth I-31, playing a role of transition and connection; a number of triangular teeth are arranged on both sides of the transition teeth I-30, and the tooth rise is between the rough cutting teeth I-29 and the fine cutting teeth I-31, which are used to gradually reduce the cutting thickness. The fine cutting teeth I-31 are located at the end of the cutting part, and are mainly used to complete the final finishing of the workpiece. The tooth shapes on both sides are curved, and the tooth rise is small (usually 0.005 to 0.015 mm).

[0098] The other structures are the same as those in Example 1 and will not be described again here.

[0099] Embodiment 3:

[0100] This embodiment provides a device for broaching an arc-shaped tenon groove. In this embodiment, Fig.17 As shown, the sliding broach handle I-20 is of external thread type, and a screw rod I-32 is provided on the top of the sliding broach handle I-20; Fig.18 As shown in the figure, the bottom of the broach I-13 is provided with a threaded hole adapted to the screw rod I-32. When assembling the broach I-13, the broach I-13 is rotated and screwed into the interior of the sliding broach handle I-20 to form a Fig.16 The assembly structure shown.

[0101] Among them, the length of the screw rod 1-32 increases successively according to the height of the broach I-13, and the height of the screw rod 1-32 is more than two-thirds of the overall length of the broach I-13.

[0102] The other structures are the same as those in Example 1 and will not be described again here.

[0103] Embodiment 4:

[0104] The present embodiment provides a broaching device for an arc-shaped tenon groove. In the present embodiment, as shown in Figures 20(a) and 20(b), the sliding broach handle I-20 includes a handle base, a columnar structure is provided on the top of the handle base, and the columnar structure is provided with an external thread I-33; as shown in Figure 23, a cylindrical protrusion is provided at the bottom of the broach I-13, namely, the handle I-39, and an installation space for the handle I-39 is reserved at the center of the sliding broach handle I-20.

[0105] The spring chuck I-38 is installed at the columnar structure of the sliding broach handle I-20 through the spring sleeve I-35, as shown in Figure 21(a) and Figure 21(b). The spring sleeve I-35 is a cylindrical structure as a whole, and is provided with an internal thread I-34 that is compatible with the external thread I-33, and a limiting groove I-40 is provided near one end. The limiting groove I-40 is an annular groove arranged along the inner wall of the spring sleeve I-35.

[0106] As shown in Figures 23(a), 23(b) and 23(c), the spring chuck I-38 is an elastic tubular component with evenly distributed longitudinal grooves on its circumference, so that the spring chuck I-38 can produce elastic deformation when subjected to external force; and a limit ring I-36 is provided in the outer ring of the spring chuck I-38, and the limit ring I-36 is arranged close to one end of the spring chuck I-38, so that the spring chuck I-38 is divided into two relatively arranged frustum-shaped structures, so that it can cooperate with the spring sleeve I-35 due to its elastic effect.

[0107] When assembling the broach I-13, first install the spring chuck I-38 into the spring sleeve I-35, so that the limiting ring I-36 is stuck in the limiting groove I-40, the spring chuck end face I-37 is aligned with the spring sleeve I-35, the spring chuck I-38 is aligned with the internal hole of the sliding broach handle I-20, and the spring sleeve I-35 is screwed into the sliding broach handle I-20, and finally the handle I-39 of the broach I-13 is inserted into the inner hole of the spring chuck I-38, so that the inner wall of the spring chuck I-38 is in close contact with the outer wall of the handle I-39.

[0108] The other structures are the same as those in Example 1 and will not be described again here.

[0109] The above description is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A broaching device for an arc-shaped tenon groove, characterized in that: include: A broaching disc connected to a broaching disc driving mechanism, the broaching disc comprising a broaching disc base and a sliding broaching handle, a plurality of linear guide rails are arranged on the surface of the broaching disc base, a lead screw is installed in the linear guide rail, one end of the lead screw is connected to the broaching disc driving mechanism; the sliding broaching handle is threadedly matched with the lead screw, and one or more broaches are installed on the sliding broaching handle; The turbine disk driving mechanism comprises a turbine disk rotating mechanism and a turbine disk telescopic mechanism, the turbine disk is mounted on the turbine disk rotating mechanism, and the turbine disk rotating mechanism is connected to the turbine disk telescopic mechanism; The turbine disc clamping mechanism comprises a bidirectional slide rail structure, and the turbine disc telescopic mechanism is fixed to the bidirectional slide rail structure.

2. A circular arc mortise broaching device according to claim 1, characterized in that: The linear guide rails are arranged radially along the base of the broaching disc, and a plurality of linear guide rails are evenly distributed circumferentially along the base of the broaching disc.

3. The arc-shaped tenon broaching device according to claim 1, characterized in that: The broach driving mechanism comprises a transmission gear, a driving gear and a first driving motor, the transmission gear is connected to one end of the lead screw, and the transmission gear is meshed with the driving gear, and the driving gear is connected to the first driving motor.

4. The arc-shaped tenon broaching device according to claim 1, characterized in that: The sliding broach handle comprises a handle base, two baffles are arranged opposite to each other on the top of the handle base, and a broach installation space is formed between the two baffles.

5. The arc-shaped tenon broaching device according to claim 1, characterized in that: The top of the handle of the sliding broach is grooved, a plurality of partitions are distributed in the groove, and positioning grooves are formed between adjacent partitions; the broach is arranged in the positioning groove.

6. A circular arc mortise broaching device according to claim 5, characterized in that: The broach is a multi-tool structure, comprising rough cutting teeth, transition teeth and fine cutting teeth which are arranged in sequence.

7. The arc-shaped tenon broaching device according to claim 1, characterized in that: A screw rod is arranged on the top of the handle of the sliding broach, and a threaded hole matched with the screw rod is arranged on the bottom of the broach.

8. The arc-shaped tenon broaching device according to claim 1, characterized in that: The sliding broach handle comprises a handle base, a spring jacket and a spring chuck. The handle base is threadedly connected to the spring jacket, and a plurality of spring chucks are clamped on the inner side of the spring jacket to form an installation space for the broach handle.

9. A circular arc mortise broaching device according to claim 8, characterized in that: The inner wall of the spring jacket is provided with a limiting groove, and the spring clamp is provided with a limiting ring matched with the limiting groove.

10. The arc-shaped tenon broaching device according to claim 1, characterized in that: The turbine disc telescopic mechanism comprises an inner cylinder and an outer cylinder which are sleeved together, the inner side of the inner cylinder is threadedly connected with a screw rod, and the screw rod passes through the outer cylinder and is connected to a driving motor; Wherein, the inner cylinder is fixed to the turbine disk, and the outer cylinder is fixed to the turbine disk clamping mechanism.

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