Aluminum skimming cleaning device for turning cutterhead machining center clamp

Abstract

The utility model relates to the technical field of turning, and discloses a turning cutterhead machining center clamp aluminum scrap cleaning device which comprises a base, a working face is fixedly connected to the top of the base, a waste scrap opening is formed in the center of the top of the working face, a clamp moving mechanism is arranged at the top of the base, and a cleaning mechanism is arranged on the surface of the base. The cleaning mechanism comprises a spraying and blowing assembly and a vibration processing assembly, the spraying and blowing assembly on the surface of the clamp moving mechanism can be synchronously driven to the machining position while the clamp moving mechanism moves, and it can be guaranteed that the spraying and blowing assembly can accurately clean scraps of the clamp through the integrated design of the spraying and blowing assembly and the vibration processing assembly; spraying cleaning can be carried out through the cooling liquid spraying head by opening the electric control valve through a computer, the spraying angle can be changed at any time through cooperation with the arrangement of the rotating connector, and therefore the cleaning efficiency is improved, the cleaning range is expanded, and meanwhile the chipping cleaning effect can be enhanced through installation of the fan. Through the arrangement of the assembly, chippings can be efficiently, automatically and accurately cleaned.

Description

Technical Field

[0001] The utility model relates to the technical field of turning processing, in particular to an aluminum chip cleaning device for a turning cutter head processing center fixture. Background Art

[0002] Turning, also known as lathe machining, is a subset of machining. Lathes primarily use turning tools to turn rotating workpieces. Drills, reamers, reamers, taps, dies, and knurling tools can also be used on lathes. Lathes are primarily used to machine shafts, discs, sleeves, and other workpieces with rotating surfaces. They are the most widely used type of machine tool in machinery manufacturing and repair factories.

[0003] When turning the workpiece on a lathe, there will be debris on the surface of the fixture. When designing an aluminum chip cleaning device for the turning tool disc machining center fixture, it is necessary to comprehensively consider the cleaning efficiency, degree of automation, convenience of equipment maintenance and cost-effectiveness. Conventional debris cleaning methods cannot be carried out efficiently in conjunction with the processing, which will cause a large amount of debris to accumulate on the surface of the fixture during the vacuum period, affecting the clamping effect of the fixture and the efficiency of the lathe processing. Utility Model Content

[0004] The purpose of the utility model is to provide an aluminum chip cleaning device for a turning cutter head machining center fixture to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a turning tool head machining center fixture aluminum chip cleaning device, comprising a base, a working surface fixedly connected to the top of the base, a waste chip opening at the center of the top of the working surface, a fixture moving mechanism provided on the top of the base, a cleaning mechanism provided on the surface of the base, the cleaning mechanism comprising a spray blowing component and a vibration processing component, the spray blowing component being provided on the top of the fixture moving mechanism, and the vibration processing component being provided inside the base;

[0006] The spray blowing assembly includes a support frame, and the clamp moving mechanism includes an auxiliary slider, wherein the support frame is fixedly connected to the top of the auxiliary slider, the top of the support frame is fixedly connected to a coolant tank, the inner side of the coolant tank is fixedly connected to an electric control valve, the end of the electric control valve away from the coolant tank is fixedly connected to a liquid infusion pipe, the inner top of the support frame is fixedly connected to a connecting plate, the bottom of the connecting plate is rotatably connected to a rotary joint, a coolant nozzle is installed at the bottom of the rotary joint, the top of the support frame is fixedly connected to the connecting frame at one end away from the coolant tank, and the inner top of the connecting frame is fixedly connected to a mounting frame. A fan is installed inside the mounting frame, and a dustproof net is installed at the bottom of the mounting frame. When the fixture moving mechanism moves, the spray blowing component on its surface will be synchronously brought to the processing position. The integrated design of the two can ensure that the spray blowing component can accurately clean the debris of the fixture. The coolant nozzle can be used for spray cleaning by opening the electric control valve through the computer. The spray angle can be changed at any time with the setting of the rotary joint, thereby improving the cleaning efficiency and expanding the cleaning range. At the same time, the installation of the fan can enhance the debris cleaning effect. The setting of this component can efficiently, automatically and accurately clean the debris.

[0007] Preferably, two groups of the spray blowing components are provided and are symmetrically distributed at the left and right ends of the top of the working surface.

[0008] Preferably, the end of the infusion tube away from the electric control valve passes through the top surface of the support frame, and sixteen groups of coolant nozzles are provided.

[0009] Preferably, the vibration processing assembly includes a first filter plate, the first filter plate is clamped into the waste chip port, the top back surface of the waste chip port is fixedly connected to a fixing plate, the front surface of the fixing plate is fixedly connected to a nozzle, the back center of the base is fixedly connected to a water tank, a water pipe is fixedly connected between the water tank and the fixing plate, the center of the base is fixedly connected to the waste chip processing box, the front middle section of the waste chip processing box is provided with an extraction outlet, an inspection door is provided on the front side of the extraction outlet, the left and right ends of the middle section of the waste chip processing box are fixedly connected to a mounting seat, the top and bottom inside the mounting seat are fixedly connected to a spring, the inside of the spring is fixedly connected to a splint, the second filter plate is plugged into the mounting seat, the waste The chip disposal box is rotatably connected with a rotating shaft, the surface of the rotating shaft is fixedly connected with a fixed sleeve, the surface of the fixed sleeve is fixedly connected with an impact column, the front face of the rotating shaft is fixedly connected with a pulley, the surface of the pulley is transmission-connected with a transmission belt, the left front end of the waste chip disposal box is fixedly connected with a motor frame, a motor is provided inside the motor frame, a through opening is provided at the bottom front end of the waste chip disposal box, a waste chip collection box is provided inside the through opening, the debris falls through the first filter plate and falls onto the second filter plate inside the waste chip disposal box, the pulley is driven to rotate by the motor, and the rotating shaft is synchronously driven to rotate, and the second filter plate is hit by the impact column, so that the debris vibrates and falls, and the separation and discharge of aluminum chips are promoted by mechanical vibration, thereby reducing blockage.

[0010] Preferably, the second filter plate corresponds to the extraction port, the second filter plate is arranged on the inner side of the clamping plate, and the rotating shaft is arranged at the bottom of the second filter plate.

[0011] Preferably, the clamping plate is fixedly connected to an end of the spring away from the mounting seat, and four groups of the clamping plates are provided.

[0012] Preferably, the pulley is rotatably connected to the output end on the back side of the motor, and two groups of pulleys are provided.

[0013] Preferably, the pulley, transmission belt, motor frame and motor are arranged on the front outside of the waste disposal box.

[0014] Preferably, the clamp moving mechanism includes a through-hole, which is opened at the left and right ends of the top of the base, and electric slide rails are installed on the front and back sides of the through-hole. Auxiliary through-holes are opened on the front and back sides of the left and right ends of the top of the base, and a guide slide rod is fixedly connected to the inside of the through-hole, and a slider is slidably connected to the surface of the guide slide rod, and an auxiliary slider is fixedly connected to the front and back sides of the slider, and the top of the slider is fixedly connected to a connecting seat, and a clamp is installed on the inside of the connecting seat.

[0015] Preferably, the auxiliary sliding block is slidably connected to the inside of the electric slide rail, and the jet blowing assembly includes a support frame, which passes through the inside of the auxiliary through-hole.

[0016] Compared with the prior art, the present invention provides a device for cleaning aluminum chips from a fixture of a turning cutter head machining center, which has the following beneficial effects:

[0017] 1. The aluminum chip cleaning device of the turning tool disc machining center fixture is equipped with a jet blowing component. When the fixture moving mechanism moves, the jet blowing component on its surface will be synchronously brought to the processing position. The integrated design of the two can ensure that the jet blowing component can accurately clean the debris of the fixture. The coolant nozzle can be used for spray cleaning by opening the electric control valve through the computer. The spray angle can be changed at any time with the setting of the rotary joint, thereby improving the cleaning efficiency and expanding the cleaning range. At the same time, the installation of the fan can enhance the debris cleaning effect. The setting of this component can effectively, automatically and accurately clean the debris.

[0018] 2. The aluminum chip cleaning device of the turning tool disc machining center fixture is equipped with a vibration processing component. The debris falls through the first filter plate and falls onto the second filter plate inside the waste chip treatment box. The motor drives the pulley to rotate, and synchronously drives the rotating shaft to rotate. The impact column hits the second filter plate, causing the debris to vibrate and fall. The mechanical vibration promotes the separation and discharge of aluminum chips, reducing blockage. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without inventive work.

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

[0021] Figure 2 This is a schematic diagram of the top structure of the utility model;

[0022] Figure 3 This is a schematic diagram of the structural fixture of the utility model;

[0023] Figure 4 This is a schematic diagram of the fan structure of the utility model;

[0024] Figure 5 This is a schematic diagram of the structural processing box of the utility model;

[0025] Figure 6 This is a schematic diagram of the structural vibration processing component of the utility model.

[0026] Figure 1: 1. Base; 2. Working surface; 3. Waste chip outlet; 4. Cleaning mechanism; 41. Jet blowing assembly; 411. Support frame; 412. Coolant tank; 413. Electric control valve; 414. Infusion pipe; 415. Connecting plate; 416. Rotary joint; 417. Coolant nozzle; 418. Connecting frame; 419. Mounting frame; 4101. Fan; 4102. Dust screen; 42. Vibration treatment assembly; 421. First filter plate; 422. Fixing plate; 423. Nozzle; 424. Water tank; 425. Water pipe; 426. Waste chip treatment box; 4261 , extraction port; 4262, inspection door; 427, mounting seat; 428, spring; 429, splint; 4201, second filter plate; 4202, rotating shaft; 4203, fixing sleeve; 4204, impact column; 4205, pulley; 4206, transmission belt; 4207, motor frame; 4208, motor; 4209, through port; 42091, waste collection box; 5, fixture moving mechanism; 51, through port; 52, electric slide rail; 53, auxiliary through port; 54, guide slide; 55, slider; 56, auxiliary slider; 57, connecting seat; 58, fixture. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0028] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, indirect connection through an intermediate medium, internal communication between two components, or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0029] The utility model provides the following technical solutions:

[0030] Example 1

[0031] See also Figure 1-6A turning tool head machining center fixture aluminum chip cleaning device includes a base 1, a working surface 2 is fixedly connected to the top of the base 1, a waste chip opening 3 is opened in the center of the top of the working surface 2, a fixture moving mechanism 5 is provided on the top of the base 1, and a cleaning mechanism 4 is provided on the surface of the base 1. The cleaning mechanism 4 includes a spray blowing component 41 and a vibration processing component 42. The spray blowing component 41 is provided on the top of the fixture moving mechanism 5, and the vibration processing component 42 is provided inside the base 1;

[0032] The spray blowing assembly 41 includes a support frame 411, and the clamp moving mechanism 5 includes an auxiliary slider 56. The support frame 411 is fixedly connected to the top of the auxiliary slider 56. The top of the support frame 411 is fixedly connected to a coolant tank 412. The inner side of the coolant tank 412 is fixedly connected to an electric control valve 413. The end of the electric control valve 413 away from the coolant tank 412 is fixedly connected to a liquid infusion pipe 414. The top of the inner side of the support frame 411 is fixedly connected to a connecting plate 415. The bottom of the connecting plate 415 is rotatably connected to a rotary joint 416. A coolant nozzle 417 is installed at the bottom of the rotary joint 416. The end of the top of the support frame 411 away from the coolant tank 412 is fixedly connected to a connecting frame 418. The top of the inner side of the connecting frame 418 is fixedly connected to an installation The mounting frame 419 has a fan 4101 installed inside it, and a dust screen 4102 is installed at the bottom of the mounting frame 419. When the fixture moving mechanism 5 moves, the spray blowing assembly 41 on its surface will be synchronously brought to the processing position. The integrated design of the two can ensure that the spray blowing assembly 41 can accurately clean the debris of the fixture 58. The electronically controlled valve 413 can be opened by the computer to spray and clean the coolant through the coolant nozzle 417. The setting of the rotary joint 416 can change the spray angle at any time, thereby improving the cleaning efficiency and expanding the cleaning range. At the same time, the installation of the fan 4101 can enhance the cleaning effect of the debris. The setting of this component can automatically and accurately clean the debris.

[0033] There are two groups of spray blowing components 41, which are symmetrically distributed at the left and right ends of the top of the working surface 2;

[0034] One end of the liquid infusion tube 414 away from the electric control valve 413 passes through the top surface of the support frame 411, and sixteen groups of cooling liquid nozzles 417 are provided;

[0035] The vibration processing assembly 42 includes a first filter plate 421, which is clamped into the waste chip port 3. The top back surface of the waste chip port 3 is fixedly connected to a fixed plate 422, and the front surface of the fixed plate 422 is fixedly connected to a nozzle 423. The center of the back surface of the base 1 is fixedly connected to a water tank 424, and a water pipe 425 is fixedly connected between the water tank 424 and the fixed plate 422. The center of the base 1 is fixedly connected to a waste chip treatment box 426, and the middle section of the front surface of the waste chip treatment box 426 is provided with an extraction port 4261, and an inspection door 4262 is provided on the front surface of the extraction port 4261. The left and right ends of the middle section of the waste chip treatment box 426 are fixedly connected to a mounting seat 427, and the top and bottom of the inner side of the mounting seat 427 are fixedly connected. A splint 429 is fixedly connected to the inner side of the spring 428. The second filter plate 4201 is inserted into the mounting seat 427, and the waste chip treatment box 426 is rotatably connected to a rotating shaft 4202. , the surface of the rotating shaft 4202 is fixedly connected with a fixed sleeve 4203, the surface of the fixed sleeve 4203 is fixedly connected with an impact column 4204, the front of the rotating shaft 4202 is fixedly connected with a pulley 4205, the surface of the pulley 4205 is connected with a transmission belt 4206, the left end of the front of the waste chip treatment box 426 is fixedly connected with a motor frame 4207, a motor 4208 is arranged inside the motor frame 4207, a through opening 4209 is opened at the bottom end of the front of the waste chip treatment box 426, and a waste chip collection box 42091 is arranged inside the through opening 4209, and the debris falls through the first filter plate 421 and falls onto the second filter plate 4201 inside the waste chip treatment box 426. The pulley 4205 is driven by the motor 4208 to rotate, and the rotating shaft 4202 is driven to rotate synchronously, and the second filter plate 4201 is hit by the impact column 4204, so that the debris vibrates and falls, and the separation and discharge of aluminum chips are promoted by mechanical vibration, thereby reducing blockage.

[0036] The second filter plate 4201 corresponds to the extraction port 4261 . The second filter plate 4201 is disposed inside the clamping plate 429 , and the rotating shaft 4202 is disposed at the bottom of the second filter plate 4201 .

[0037] The clamping plate 429 is fixedly connected to the end of the spring 428 away from the mounting seat 427, and there are four groups of clamping plates 429;

[0038] The pulley 4205 is rotatably connected to the output end at the back of the motor 4208, and there are two sets of pulleys 4205;

[0039] The pulley 4205 , the transmission belt 4206 , the motor frame 4207 and the motor 4208 are arranged on the front outside of the waste disposal box 426 .

[0040] Example 2

[0041] See also Figure 1-6And on the basis of embodiment one, further get the fixture moving mechanism 5 includes through the mouth 51, through the mouth 51 is opened in the top of the base 1 left and right two ends, the inside of through the mouth 51 front and back are all installed with electric sliding rail 52, the top of the base 1 left and right two ends front and back are all opened with auxiliary through the mouth 53, the inside of through the mouth 51 is fixedly connected with guide slide rod 54, the surface of guide slide rod 54 is slidably connected with sliding block 55, the front and back of sliding block 55 are all fixedly connected with auxiliary sliding block 56, the top of sliding block 55 is fixedly connected with connecting seat 57, the inboard of connecting seat 57 is installed with clamp 58;

[0042] Auxiliary sliding block 56 is slidably connected inside electric sliding rail 52, and spray blowing assembly 41 includes support frame 411, which penetrates inside auxiliary through hole 53.

[0043] In actual operation process, the position of sliding block 55 in through hole 51 is adjusted according to size of workpiece, workpiece is clamped by clamp 58, workpiece is turned, and spray blowing assembly 41 on surface of clamp moving mechanism 5 is synchronously taken to machining position while clamp moving mechanism 5 moves, integrated design of both can guarantee that spray blowing assembly 41 can accurately clean chips of clamp 58, spray cleaning can be carried out through cooling liquid nozzle 417 by opening electric control valve 413, angle of spray can be changed at any time by cooperation of setting of rotary joint 416, so that cleaning efficiency is improved, cleaning range is expanded, and installation of fan 4101 can strengthen cleaning effect of chips, chips are cleaned efficiently, automatically and accurately through setting of the assembly, chips fall on second filter plate 4201 in waste chip treatment box 426 through first filter plate 421, belt wheel 4205 is driven to rotate by motor 4208, rotating shaft 4202 is synchronously driven to rotate, second filter plate 4201 is impacted by impact column 4204, so that chips vibrate and fall, separation and discharge of aluminum chips are promoted by mechanical vibration, and plugging phenomenon is reduced, chips on top of first filter plate 421 are washed by fixed plate 422, so that chips are prevented from remaining, and chips fall into waste chip collection box 42091, which is convenient for collection in later period, the aluminum chip cleaning device combines aluminum chip collection, separation and storage and multiple links, realizes automatic and efficient cleaning of aluminum chips on turning tool holder of machining center, improves machining efficiency by reasonable design and configuration, reduces labor cost, and creates greater economic benefits for enterprises.

[0044] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the phrase "comprising a..." does not exclude the presence of additional identical elements in the process, method, article, or device comprising the element.

Claims

1. A turning tool head machining center fixture aluminum chip cleaning device, comprising a base (1), characterized in that: The top of the base (1) is fixedly connected to a working surface (2), and a waste chip opening (3) is provided at the center of the top of the working surface (2). The top of the base (1) is provided with a fixture moving mechanism (5), and the surface of the base (1) is provided with a cleaning mechanism (4), and the cleaning mechanism (4) includes a spray blowing component (41) and a vibration processing component (42), wherein the spray blowing component (41) is provided on the top of the fixture moving mechanism (5), and the vibration processing component (42) is provided inside the base (1); The spray blowing assembly (41) includes a support frame (411), and the clamp moving mechanism (5) includes an auxiliary slider (56). The support frame (411) is fixedly connected to the top of the auxiliary slider (56). The top of the support frame (411) is fixedly connected to a coolant tank (412). The inner side of the coolant tank (412) is fixedly connected to an electric control valve (413). The end of the electric control valve (413) away from the coolant tank (412) is fixedly connected to a liquid infusion tube (414). The inner top of the support frame (411) is fixedly connected to a A connecting plate (415) is rotatably connected to a rotary joint (416) at the bottom of the connecting plate (415), a coolant nozzle (417) is installed at the bottom of the rotary joint (416), a connecting frame (418) is fixedly connected to the top of the supporting frame (411) away from the coolant tank (412), a mounting frame (419) is fixedly connected to the top of the inner side of the connecting frame (418), a fan (4101) is installed inside the mounting frame (419), and a dust screen (4102) is installed at the bottom of the mounting frame (419).

2. The aluminum chip cleaning device for a turning cutter head machining center fixture according to claim 1, characterized in that: The jet blowing components (41) are provided in two groups and are symmetrically distributed at the left and right ends of the top of the working surface (2).

3. The aluminum chip cleaning device for a turning cutter head machining center fixture according to claim 1, characterized in that: One end of the liquid infusion tube (414) away from the electric control valve (413) passes through the top surface of the support frame (411), and sixteen groups of cooling liquid nozzles (417) are provided.

4. The aluminum chip cleaning device for a turning cutter head machining center fixture according to claim 1, characterized in that: The vibration processing assembly (42) includes a first filter plate (421), the first filter plate (421) is clamped inside the waste chip port (3), the top of the back of the waste chip port (3) is fixedly connected to a fixed plate (422), the front of the fixed plate (422) is fixedly connected to a nozzle (423), the center of the back of the base (1) is fixedly connected to a water tank (424), a water pipe (425) is fixedly connected between the water tank (424) and the fixed plate (422), the center of the base (1) is fixedly connected to a waste chip treatment box (426), the middle section of the front of the waste chip treatment box (426) is provided with an extraction port (4261), the front of the extraction port (4261) is provided with an inspection door (4262), the left and right ends of the middle section of the waste chip treatment box (426) are fixedly connected to a mounting seat (427), the top and bottom of the inner side of the mounting seat (427) are fixedly connected to springs (42 8), a clamping plate (429) is fixedly connected to the inner side of the spring (428), a second filter plate (4201) is inserted into the interior of the mounting seat (427), a rotating shaft (4202) is rotatably connected to the interior of the waste chip treatment box (426), a fixed sleeve (4203) is fixedly connected to the surface of the rotating shaft (4202), an impact column (4204) is fixedly connected to the surface of the fixed sleeve (4203), a pulley (4205) is fixedly connected to the front of the rotating shaft (4202), a transmission belt (4206) is transmission-connected to the surface of the pulley (4205), a motor frame (4207) is fixedly connected to the left end of the front of the waste chip treatment box (426), a motor (4208) is arranged inside the motor frame (4207), a through opening (4209) is opened at the bottom end of the front of the waste chip treatment box (426), and a waste chip collection box (42091) is arranged inside the through opening (4209).

5. The aluminum chip cleaning device for a turning cutter head machining center fixture according to claim 4, characterized in that: The second filter plate (4201) corresponds to the extraction port (4261), the second filter plate (4201) is arranged on the inner side of the clamping plate (429), and the rotating shaft (4202) is arranged at the bottom of the second filter plate (4201).

6. The aluminum chip cleaning device for a turning cutter head machining center fixture according to claim 4, characterized in that: The clamping plate (429) is fixedly connected to one end of the spring (428) away from the mounting seat (427), and four groups of the clamping plates (429) are provided.

7. The aluminum chip cleaning device for a turning cutter head machining center fixture according to claim 4, characterized in that: The pulley (4205) is rotatably connected to the output end on the back side of the motor (4208), and two groups of pulleys (4205) are provided.

8. The aluminum chip cleaning device for a turning cutter head machining center fixture according to claim 4, characterized in that: The pulley (4205), the transmission belt (4206), the motor frame (4207) and the motor (4208) are arranged outside the front of the waste processing box (426).

9. The aluminum chip cleaning device for a turning cutter head machining center fixture according to claim 1, characterized in that: The clamp moving mechanism (5) includes a through-hole (51), which is opened at the left and right ends of the top of the base (1), and electric slide rails (52) are installed on the front and back of the through-hole (51). Auxiliary through-holes (53) are opened on the front and back of the left and right ends of the top of the base (1), and a guide slide bar (54) is fixedly connected to the inside of the through-hole (51). A slider (55) is slidably connected to the surface of the guide slide bar (54), and an auxiliary slider (56) is fixedly connected to the front and back of the slider (55). The top of the slider (55) is fixedly connected to a connecting seat (57), and a clamp (58) is installed on the inner side of the connecting seat (57).

10. The aluminum chip cleaning device for a turning cutter head machining center fixture according to claim 9, characterized in that: The auxiliary sliding block (56) is slidably connected to the inside of the electric slide rail (52), and the jet blowing assembly (41) includes a support frame (411), and the support frame (411) passes through the inside of the auxiliary through-hole (53).

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