A rubbing and pressing rounded corner strengthening machine

Abstract

The present invention discloses a rubbing and pressing type rounded corner strengthening machine, comprising a machine platform and a pressing mechanism located above the machine platform, and further comprising: two rubbing and pressing mechanisms arranged on the machine platform; a driving mechanism for driving at least one of the rubbing and pressing mechanisms to move; wherein the rubbing and pressing mechanisms comprise rubbing and pressing plates, and the two rubbing and pressing plates can move back to back; the opposite sides of the two rubbing and pressing plates have rubbing and pressing portions in contact with the parts to be strengthened on the products to be processed, the rubbing and pressing portions extend straight along the rubbing and pressing plates, the rubbing and pressing portions are provided with R angles, and the radian of the R angle on the rubbing and pressing portions is consistent with the radian of the R angle of the strengthened parts in the finished products of the products. In the present invention, the two rubbing and pressing plates are driven by the driving mechanism to move, and the parts to be strengthened of the rotating fasteners are rounded and rubbing and pressing strengthened, with high processing precision, and capable of meeting the rounded corner strengthening requirements of fasteners of different sizes.

Description

Technical Field

[0001] The invention relates to the technical field of fastener strengthening rolling, in particular to a rubbing and pressing type rounded corner strengthening machine. Background Art

[0002] The fillet rolling strengthening process is applied to the transition part of the bolt head and rod of high-strength fasteners represented by aviation bolts. By applying positive rolling force to the arc for strengthening rolling, compressive stress is generated on the arc surface of the metal to improve the surface roughness of the arc and increase the density of the metal material at the arc connection to prevent and avoid the generation of micro cracks on the arc at the head and rod connection of the bolt under frequent tensile stress conditions, ultimately achieving the flight safety of various aircraft and equipment connected by aviation bolts.

[0003] Patent document with publication number CN113231789A discloses a two-wheel fillet rolling and strengthening machine for bolt strengthening rolling. The rolling and strengthening machine uses three rollers to perform fillet strengthening rolling on fasteners. The defects of this design are obvious. When rolling a small-diameter workpiece, the diameters of the three rollers can only be made very small and cannot be made too large, otherwise they will interfere with each other; since the roller diameter is too small, the swivel pin is too thin to install the bearing, and only sliding dry friction can be performed between the roller and the swivel pin; at the same time, the force between the swivel pin shaft and the roller is uneven, and there is no lubricated sliding friction between the pin shaft and the roller, and there is mutual friction between the inner hole of the roller, which can easily lead to inconsistent wear degrees of the three disposable pin shafts, and only disposable pin shafts that are thinner than the workpiece can be used as roller sliding friction swivel shafts. Summary of the invention

[0004] The purpose of the present invention is to solve the above problems. A rubbing and pressing type fillet strengthening machine is designed to solve the problems that roller-type fillet strengthening machines are difficult to process small diameter fasteners and suffer from large wear.

[0005] The technical solution of the present invention to achieve the above-mentioned purpose is a rubbing and pressing type rounded corner strengthening machine, comprising a machine platform and a pressing mechanism located above the machine platform, and further comprising:

[0006] Two rubbing and pressing mechanisms are arranged on the machine platform;

[0007] A driving mechanism, used for driving at least one of the rubbing and pressing mechanisms to move;

[0008] The rubbing and pressing mechanism comprises rubbing and pressing plates, two of which can move back to back, wherein a channel for placing the product to be processed is provided between the two rubbing and pressing plates, and the spacing between the two rubbing and pressing plates is adjustable, and the pressing mechanism is located directly above the channel, and is used to press the product to be processed downward, so that the channel between the two rubbing and pressing plates can be gradually narrowed, thereby clamping the product to be processed;

[0009] The opposite sides of the two rubbing plates have rubbing parts that contact the parts to be strengthened on the products to be processed. The rubbing parts extend straight along the rubbing plates. The rubbing parts are provided with R angles. The curvature of the R angle on the rubbing parts is consistent with the curvature of the R angle of the strengthened parts in the finished products. The rubbing parts of the two rubbing plates are used for rounding the corners of the rotating products to be processed and rubbing and strengthening them.

[0010] Furthermore, the rubbing and pressing mechanism also includes a guide base slidably connected to the slide rail on the machine table, a bearing seat slidably connected to the guide base, and a deflection seat rotatably connected to the bearing seat, wherein a deflection shaft is provided on the deflection seat, and the two ends of the deflection shaft are rotatably connected to the two sides of the bearing seat respectively, the rubbing and pressing plate is installed and fixed on the deflection seat, and the deflection seat can deflect toward the side where the product to be processed is placed.

[0011] Furthermore, a guide groove is provided on the guide base, the bearing seat is slidably connected to the guide groove, and the sliding direction of the bearing seat is perpendicular to the sliding direction of the guide base.

[0012] Furthermore, pressure blocks for preventing the bearing seat from shifting upward are arranged on both sides of the guide groove, and inclined surfaces are arranged on both sides of the bearing seat. The two pressure blocks are respectively slidably matched with the inclined surfaces on both sides of the bearing seat.

[0013] Furthermore, a limiting plate is provided at at least one end of the deflection seat, and a rotatable angle adjustment seat is provided at a position of the guide base corresponding to the limiting plate, and the angle adjustment seat can abut against the limiting plate to limit the deflection angle of the deflection seat.

[0014] Furthermore, a return spring is provided on the bottom of the deflection seat near the side of the product to be processed, and a guide thread column is provided on the bearing seat. One end of the return spring is sleeved on the guide thread column, and the other end abuts against the bottom of the deflection seat.

[0015] Furthermore, the guide base is provided with a spacing adjustment mechanism for adjusting the spacing between the rubbing and pressing plates in the two rubbing and pressing mechanisms. The spacing adjustment mechanism includes a screw seat fixed on the guide base, an adjusting screw threadedly connected to the screw seat, and a wedge block connected to the adjusting screw at one end, and the wedge block and the bearing seat are matched with an inclined surface.

[0016] Furthermore, at least one guide rod is provided on one side of the bearing seat close to the wedge block, a through long hole is opened on the wedge block, one end of the guide rod passes through the long hole and is interlaced with the guide base, and a scale is provided on the wedge block.

[0017] Furthermore, the driving mechanism includes a driving motor, a reducer and a rack. The output end of the driving motor is connected to the input end of the reducer. The output end of the reducer is connected to a gear. Two racks are provided and are respectively installed and fixed on opposite sides of two guide bases. Both sides of the gear are respectively meshed with the two racks.

[0018] Furthermore, a truss is provided on the machine platform, and the pressing mechanism is vertically fixed on the truss. The pressing mechanism includes a pressing assembly, a bearing sleeve arranged at the lower end of the pressing assembly, a driving head sleeve rotatably connected to the bottom of the bearing sleeve, and a pressure head detachably connected to the bottom of the driving head sleeve, which can apply downward pressure to the product to be processed.

[0019] Compared with the prior art, the beneficial effects are:

[0020] In the present invention, the fastener is pressed downward by the pressing mechanism in the channel between the two pressing plates, and the two pressing plates are moved toward each other, the channel gradually narrows, and the fastener is clamped, and the two pressing plates are driven by the driving mechanism to move in opposite directions, so that the corners of the rotating fastener to be strengthened are rounded and pressed to strengthen the part to be strengthened. This can avoid the problem that in the traditional roller-type rounded corner strengthening machine, in order to ensure that the rollers do not interfere with each other, the diameter of the roller is made very small when rolling a workpiece with a smaller diameter, so the diameter of the rotating pin shaft for mounting the roller is smaller, resulting in the pin shaft being unable to be equipped with a bearing. The rubbing and pressing rounded corner strengthening structure does not have the above problem and can meet the rounded corner strengthening requirements of fasteners of different sizes. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the fillet strengthening machine in the present invention;

[0022] Figure 2 It is a structural schematic diagram of the pressing mechanism in the present invention;

[0023] Figure 3 It is a schematic diagram of the structure of two rubbing and pressing mechanisms and a driving mechanism in a fillet strengthening machine;

[0024] Figure 4 It is a structural schematic diagram of the rubbing and pressing mechanism in the present invention;

[0025] Figure 5 It is a structural schematic diagram of the rubbing and pressing mechanism in the present invention from another perspective;

[0026] Figure 6 It is a structural schematic diagram of a guide base in the rubbing and pressing mechanism of the present invention;

[0027] Figure 7 It is a schematic diagram of the installation structure of the rubbing and pressing plate in the present invention.

[0028] Figure 8yes Figure 7 A structural diagram from another perspective;

[0029] Fig. 9 It is a structural schematic diagram of the rubbing and pressing board in the present invention;

[0030] Fig.10 This is a state diagram of two rubbing plates performing rounding reinforcement on fasteners;

[0031] Fig.11 This is another embodiment of two rubbing plates to strengthen the rounded corners of fasteners.

[0032] In the figure, 1, machine table; 2, rubbing and pressing mechanism; 21, guide base; 211, guide groove; 22, bearing seat; 221, pointer; 222, guide rod; 23, deflection shaft; 24, deflection seat; 25, rubbing and pressing plate; 251, rubbing and pressing part; 26, limit plate; 27, angle adjustment seat; 28, pressure block; 281, locking knob; 29, guide thread column; 30, reset spring; 3, truss; 4, pressing mechanism; 41, pressing assembly; 42, bearing sleeve; 43, driving head sleeve; 44, pressing head; 5, driving mechanism; 51, driving motor; 52, reducer; 53, gear; 54, rack; 6, spacing adjustment mechanism; 61, screw seat; 62, adjusting screw; 63, wedge block; 631, scale; 64, handle. DETAILED DESCRIPTION

[0033] 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. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] like Figure 1 and Figure 3 As shown, a preferred embodiment of the present invention proposes a rubbing and pressing type rounded corner strengthening machine, which mainly includes a machine table 1, a pressing mechanism 4, a driving mechanism 5, and two rubbing and pressing mechanisms 2, wherein a truss 3 is arranged on the machine table 1, and the pressing mechanism 4 is vertically installed and fixed on the truss 3, the two rubbing and pressing mechanisms 2 are arranged in parallel, can make a linear motion along the machine table 1, and the movement directions of the two rubbing and pressing mechanisms are opposite, the driving mechanism 5 is used to drive the two rubbing and pressing mechanisms 2 to move, and the two rubbing and pressing mechanisms 2 can move back and forth or not.

[0035] In other technical solutions, only one of the rubbing and pressing mechanisms 2 can slide along the machine table 1, and the other one is fixed on the machine table 1. In this example, the two rubbing and pressing mechanisms 2 are arranged in parallel, and specifically, the rubbing and pressing parts 251 on the rubbing and pressing plate 25 are parallel to each other. In other technical solutions, the two rubbing and pressing parts 251 may not be parallel and may have a certain angle. In this example, the two rubbing and pressing mechanisms 2 are arranged horizontally. In other technical solutions, the two rubbing and pressing mechanisms 2 may not be horizontal.

[0036] A channel is formed between the two rubbing and pressing mechanisms 2 for placing fasteners. The pressing mechanism 4 is located directly above the channel. When the pressing mechanism 4 places the fastener into the channel, the pressing mechanism 4 applies downward pressure to the two rubbing and pressing mechanisms 2, causing the two rubbing and pressing mechanisms 2 to deflect toward the middle (i.e., the side close to the fastener). The two rubbing and pressing mechanisms 2 clamp the fastener, and then the two rubbing and pressing mechanisms 2 move to rub and strengthen the portion of the fastener to be strengthened.

[0037] like Figure 2 As shown, the pressing mechanism 4 is mainly composed of a pressing assembly 41, a bearing sleeve 42, a driving head sleeve 43 and a pressing head 44, wherein the bearing sleeve 42 is arranged at the bottom of the pressing assembly 41, the driving head sleeve 43 is rotatably connected to the bottom of the bearing sleeve 42, the pressing head 44 is arranged at the bottom of the driving head sleeve 43, and the pressing assembly 41 controls the pressing head 44 to move downward.

[0038] The pressure head 44 applies downward pressure to the fastener. When the fastener moves downward, it will contact the two rubbing and pressing mechanisms 2, causing the two rubbing and pressing mechanisms 2 to deflect toward the middle, and the two rubbing and pressing mechanisms 2 clamp the fastener. The greater the pressing force applied by the pressing assembly 41, the greater the clamping force applied to the fastener by the two rubbing and pressing mechanisms 2. A pressure sensor is provided on the pressing assembly 41 to detect the size of the pressure applied by the pressing assembly 41. As long as the applied pressure is consistent, the consistency of the processed product can be guaranteed.

[0039] While the two rubbing and pressing mechanisms 2 are moving in a straight line, the pressing assembly 41 is applying downward pressure to the pressing head 44. During the rubbing and pressing of the fasteners by the two rubbing and pressing mechanisms 2, the fasteners will also rotate under the action of friction, and the driving head cover 43 will rotate with the fasteners.

[0040] like Figure 4 , Figure 5As shown, the rubbing and pressing mechanism 2 is composed of a guide base 21, a bearing seat 22, a deflection seat 24 and a rubbing and pressing plate 25, wherein slide rails are arranged on both sides of the upper part of the machine table 1, and the bottoms of the two guide bases 21 are respectively connected to the slide rails on both sides in horizontal sliding. A guide groove 211 is arranged on the guide base 21, and the bottom of the bearing seat 22 is connected to the guide groove 211 in sliding. The sliding direction of the bearing seat 22 is perpendicular to the sliding direction of the guide base 21, and a deflection shaft 23 is arranged on the deflection seat 24. The two ends of 23 are rotatably connected to the two sides of the bearing seat 22 respectively, the deflection seat 24 is rotatably connected to the bearing seat 22 through the deflection shaft 23, and the rubbing plate 25 is fixed to the side of the deflection seat 24 close to the channel (i.e., the fastener to be processed is placed) by bolts. When pressed down, the two rubbing plates 25 will give downward pressure, so that the two deflection seats 24 deflect toward the side where the middle channel is located, and the two rubbing plates 25 will clamp the connection between the head and the rod of the fastener. The two rubbing plates 25 move to rub and strengthen the fastener with rounded corners.

[0041] refer to Fig. 9 The cross-sectional shape of the rubbing plate 25 is a polygon, and the structure of the upper part is similar to a triangle. The upper end of the rubbing plate 25 has an edge, and a rubbing portion 251 is provided at the edge. The rubbing portion 251 extends along the straight direction, and the rubbing portion 251 is provided with an R angle along the length direction. The radian of the R angle is consistent with the radian of the R angle of the reinforced part in the finished fastener. When the two rubbing plates 25 move back and forth, the rubbing portion 251 will be in close contact with the rotating fastener, squeezing the fastener toward the middle, and strengthening the fastener by rounded rubbing.

[0042] According to the size and R angle of the fastener, the pressing plate 25 can be replaced with a pressing plate 25 with other R angles.

[0043] like Fig.11 As shown, in other technical solutions, the rubbing and pressing mechanism 2 can also be designed not to deflect to one side, and the rubbing and pressing plates 25 only need to be designed to slide obliquely downward. When the two rubbing and pressing plates 25 slide obliquely downward, the distance between the two rubbing and pressing plates 25 will become smaller, thereby clamping the fastener, and then performing rounded rubbing and pressing to strengthen it.

[0044] like Figure 7 , Figure 8As shown, a return spring 30 is provided at the bottom of the deflection seat 24, the upper end of the return spring 30 abuts against the guide hole at the bottom of the deflection seat 24, and the lower end is sleeved on the guide thread column 29 located on the guide base 21. The outer peripheral surface of the guide thread column 29 has a thread, which can limit the return spring 30 and prevent the return spring 30 from detaching from the guide thread column 29; the return spring 30 is located on the side of the bottom of the deflection seat 24 close to the middle channel, so that when the deflection seat 24 is not subjected to downward pressure, the deflection seat 24 is deflected upward and returned to the initial position under the action of the return spring 30, loosening the fastener so as to take the fastener out of the channel.

[0045] refer to Figure 7 In order to limit the deflection angle of the deflection seat 24, a limit plate 26 is provided at one end of the deflection seat 24, and an angle adjustment seat 27 is provided at a position corresponding to the position of the limit plate 26 on the bearing seat 22. When the deflection seat 24 deflects downward, the limit plate 26 abuts against the angle adjustment seat 27, so that the deflection seat 24 cannot continue to deflect downward. The angle between the angle adjustment seat 27 and the bearing seat 22 is adjustable, so that the deflection angle of the deflection seat 24 can be adjusted.

[0046] like Figure 3 , Figure 5 As shown, a spacing adjustment mechanism 6 is also provided on the guide base 21 for adjusting the spacing between the two rubbing plates 25. The spacing adjustment mechanism 6 is composed of a screw seat 61, an adjustment screw 62 and a wedge block 63, wherein the wedge block 63 and the bearing seat 22 are matched with an inclined surface, and the side of the wedge block 63 away from the bearing seat 22 (i.e., the side where the right angle side is located) is against the guide base 21, the screw seat 61 is fixed on the guide base 21, and the adjustment screw 62 is threadedly connected with the screw seat 61, one end of which passes through the screw seat 61 and is rotatably connected with the connecting groove on the wedge block 63, and the other end is provided with a handle 64, and the adjustment screw 62 is driven to rotate by the handle 64, thereby driving the wedge block 63 to move along the guide base 21, and the bearing seat 22 slides along the guide groove 211 under the cooperation of the inclined surface of the wedge block 63.

[0047] refer to Figure 5 A pointer 221 is provided on the bearing seat 22, and a scale 631 is provided on the upper part of the wedge block 63 near the inclined surface. When the wedge block 63 moves a certain distance, the pointer 221 will point to the corresponding scale, so that the moving distance of the bearing seat 22 can be accurately controlled, thereby accurately adjusting the distance between the two rubbing plates 25.

[0048] The spacing between the two rubbing plates 25 is generally greater than the diameter of the fastener shank and less than the diameter of the head. Depending on the diameter of the fastener to be processed, the spacing between the two rubbing plates 25 is adjusted.

[0049] refer to Figure 5 , Figure 8 Two guide rods 222 are provided on one side of the bearing seat 22 close to the wedge block 63. One end of the guide rod 222 passes through the long hole on the wedge block 63 from the side and is connected with the guide base 21. The guide rod 222 guides the sliding of the bearing seat 22 to prevent the sliding of the bearing seat 22 from deviating.

[0050] After the spacing between the two rubbing plates 25 is adjusted, the bearing seat 22 needs to be pressed, so a pressing block 28 is provided on both sides of the guide groove 211, and the pressing block 28 and the bearing seat 22 are also matched with an inclined surface. A locking knob 281 is provided on one of the pressing blocks 28, and by rotating the locking knob 281, a downward pressure is applied to the pressing block 28, and then the pressing blocks 28 on both sides of the bearing seat 22 press the bearing seat 22 downward to prevent the pressing block 28 from sliding freely along the guide groove 211.

[0051] like Figure 3 As shown, the driving mechanism 5 is installed in the machine 1, located below the passage between the two rubbing and pressing mechanisms 2, and fixed on the mounting plate. The driving mechanism 5 is composed of a driving motor 51, a reducer 52, and a rack 54. The output end of the driving motor 51 is connected to the input end of the reducer 52, and the output end of the reducer 52 is connected to a gear 53. The cross-sectional shape of the guide base 21 is similar to an L shape. Two racks 54 are provided, which are respectively fixed at the lower ends of the two guide bases 21 on opposite sides. The gear 53 is located between the two racks 54, and the two sides are respectively meshed with the two racks 54.

[0052] When the pressing mechanism 4 presses the fastener downward, the head of the fastener will contact the two rubbing plates 25 during the pressing process, causing the two rubbing plates 25 to deflect downward to clamp the fastener. At the same time, the driving motor 51 drives the gear 53 to rotate, driving the two guide bases 21 to reciprocate in opposite directions, thereby driving the two rubbing plates 25 to reciprocate back and forth. During the reciprocating movement, the rubbing portion 251 of the rubbing plate 25 rubs and strengthens the part to be strengthened of the fastener. Under the action of friction, the fastener will also rotate with the movement of the rubbing plate 25. On one hand, the rubbing plate 25 rubs and strengthens the fastener with rounded corners, and on the other hand, the pressing mechanism is absorbed to apply downward pressure to the rubbing plate 25, so that the two rubbing plates 25 continue to deflect toward the center until the strengthening is completed. Finally, the pressing mechanism is absorbed to cancel the downward pressure, and the deflection seat 24 is deflected upward and returned to its original position under the action of the return spring 30 to discharge the material.

[0053] When the two pressing plates 25 are pressing and strengthening the fasteners, the pressing mechanism will apply downward pressure to the two pressing plates 25, so that the fasteners are clamped tighter and the fasteners will not be offset. The precision consistency of the rounded corner pressing and strengthening is good, and the manufacturing cost is greatly reduced. However, the roller cannot be manufactured using the arc rolling strengthening process of the traditional mold manufacturing method after heat treatment because the diameter and aperture are too small. It can only be manufactured by fine turning and heat treatment before the roller heat treatment, which causes the roller to deform and the geometric precision to decrease, which cannot be comparable to the manufacturing precision of the pressing plate 25.

[0054] The above technical solutions only reflect the preferred technical solutions of the technical solutions of the present invention. Some changes that may be made to certain parts thereof by technicians in this technical field all reflect the principles of the present invention and fall within the protection scope of the present invention.

Claims

1. A rubbing and pressing type rounded corner strengthening machine, comprising a machine platform (1) and a pressing mechanism (4) located above the machine platform (1), characterized in that: Also includes: Two rubbing and pressing mechanisms (2) arranged on the machine platform (1); A driving mechanism (5) for driving at least one of the rubbing and pressing mechanisms (2) to move; The rubbing and pressing mechanism (2) comprises a rubbing and pressing plate (25), a guide base (21) slidably connected to a slide rail on a machine platform (1), a bearing seat (22) slidably connected to the guide base (21), and a deflection seat (24) rotatably connected to the bearing seat (22), wherein a deflection shaft (23) is provided on the deflection seat (24), the deflection shaft (23) is rotatably connected to the bearing seat (22), the rubbing and pressing plate (25) is mounted and fixed on the deflection seat (24), the deflection seat (24) can deflect toward a side where a product to be processed is placed, the two rubbing and pressing plates (25) can move in opposite directions, a channel for placing the product to be processed is provided between the two rubbing and pressing plates (25), and the spacing between the two rubbing and pressing plates (25) is adjustable, the pressing mechanism (4) is located directly above the channel, and is used to press the product to be processed downward, so that the channel between the two rubbing and pressing plates (25) can gradually narrow, thereby clamping the product to be processed; The two rubbing and pressing plates (25) have rubbing and pressing portions (251) on opposite sides thereof that are in contact with the parts to be strengthened on the products to be processed. The rubbing and pressing portions (251) extend in a straight line along the rubbing and pressing plates (25). The rubbing and pressing portions (251) are provided with an R angle. The radian of the R angle on the rubbing and pressing portions (251) is consistent with the radian of the R angle of the strengthened parts in the finished products. The rubbing and pressing portions (251) of the two rubbing and pressing plates (25) are used to perform rounded rubbing and strengthening on the rotating products to be processed. The pressing mechanism (4) comprises a pressing assembly (41), a bearing sleeve (42) arranged at the lower end of the pressing assembly (41), a driving head sleeve (43) rotatably connected to the bottom of the bearing sleeve (42), and a pressing head (44) detachably connected to the bottom of the driving head sleeve (43), and the pressing assembly (41) is capable of applying downward pressure to the product to be processed.

2. A rubbing and pressing type fillet strengthening machine according to claim 1, characterized in that: The guide base (21) is provided with a guide groove (211), the bearing seat (22) is slidably connected to the guide groove (211), and the sliding direction of the bearing seat (22) is perpendicular to the sliding direction of the guide base (21).

3. A rubbing and pressing type fillet strengthening machine according to claim 2, characterized in that: Both sides of the guide groove (211) are provided with pressure blocks (28) for preventing the bearing seat (22) from shifting upwards. Both sides of the bearing seat (22) are provided with inclined surfaces. The two pressure blocks (28) are respectively slidably matched with the inclined surfaces on both sides of the bearing seat (22).

4. The rubbing and pressing type fillet strengthening machine according to claim 1, characterized in that: A limiting plate (26) is disposed at at least one end of the deflection seat (24); a rotatable angle adjustment seat (27) is disposed at a position of the guide base (21) corresponding to the position of the limiting plate (26); the angle adjustment seat (27) can abut against the limiting plate (26) to limit the deflection angle of the deflection seat (24).

5. The rubbing and pressing type fillet strengthening machine according to claim 1, characterized in that: A return spring (30) is also provided at the bottom of the deflection seat (24) near the side of the product to be processed, and a guide thread column (29) is provided on the bearing seat (22). One end of the return spring (30) is sleeved on the guide thread column (29), and the other end abuts against the bottom of the deflection seat (24).

6. The rubbing and pressing type fillet strengthening machine according to claim 1, characterized in that: The guide base (21) is provided with a spacing adjustment mechanism (6) for adjusting the spacing between the rubbing plates (25) in the two rubbing mechanisms (2), the spacing adjustment mechanism (6) comprising a screw seat (61) fixed on the guide base (21), an adjustment screw (62) threadedly connected to the screw seat (61), and a wedge block (63) connected to the adjustment screw (62) at one end, and the wedge block (63) and the bearing seat (22) are in an inclined surface fit.

7. The rubbing and pressing type fillet strengthening machine according to claim 5, characterized in that: At least one guide rod (222) is provided on one side of the bearing seat (22) close to the wedge block (63); a through long hole is provided on the wedge block (63); one end of the guide rod (222) passes through the long hole and is interlaced with the guide base (21); and a scale (631) is provided on the wedge block (63).

8. The rubbing and pressing type fillet strengthening machine according to claim 1, characterized in that: The driving mechanism (5) comprises a driving motor (51), a reducer (52) and a rack (54); the output end of the driving motor (51) is connected to the input end of the reducer (52); the output end of the reducer (52) is connected to a gear (53); two racks (54) are provided and are respectively mounted and fixed on opposite sides of two guide bases (21); and two sides of the gear (53) are respectively meshed with the two racks (54).

9. The rubbing and pressing type fillet strengthening machine according to claim 1, characterized in that: A truss (3) is provided on the machine platform (1), and the pressing mechanism (4) is vertically fixed on the truss (3).

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