Online blind hole cleaning device

Abstract

The utility model discloses an on-line blind hole cleaning device which is high in cleaning efficiency, good in cleaning effect, not prone to damaging products and capable of improving the machining efficiency and the qualified rate of the products. The on-line blind hole cleaning device comprises a cleaning mechanism and a clamping mechanism. The cleaning mechanism comprises a cutter handle used for being fixed to the movable end of a CNC machine tool spindle, a magnetic attraction base fixed to the cutter handle, a magnetic attraction connector magnetically connected with the magnetic attraction base, and a high-pressure medium connector communicating with an inner cavity of the magnetic attraction connector and used for being connected with external high-pressure oil or high-pressure air. The nozzle is detachably mounted at the bottom of the magnetic suction connector and communicated with an inner cavity of the magnetic suction connector, and a spraying part is arranged on the side, back on to the magnetic suction connector, of the nozzle; the clamping mechanism comprises a bottom plate used for being fixed to a machine tool workbench, a driving mechanism fixed to the bottom plate and a clamping jaw installed at the driving end of the driving mechanism and used for clamping the magnetic suction connector and the nozzle, and the clamping jaw is opened and closed to clamp or release the magnetic suction connector and the nozzle when the driving mechanism acts.

Description

TECHNICAL FIELD

[0001] The utility model relates to machining technical field, especially a kind of online blind hole cleaning device. BACKGROUND

[0002] Blind hole structure parts are key components of mechanical equipment and precision instruments, and the cleanliness of the hole directly affects the overall performance and reliability of the product. Blind holes mainly include cylindrical blind holes, threaded blind holes and special-shaped blind holes. For blind hole structures with a large length-diameter ratio, due to their special structure, it is easy to leave oil stains, cutting chips and other impurities at the bottom of the hole during machining. If not cleaned effectively, it will cause problems such as poor blind hole plating, poor hole fit and damage, thereby affecting the reliability and precision of the parts. Currently, the main way to remove blind hole chips in the industry is for the operator to use a compressed air gun nozzle connected to compressed air to reach the bottom of the hole after the part is machined, in order to clean the residual impurities in the hole. When the number of holes to be cleaned is large and concentrated, manual operation can only clean each hole one by one, and the cleaning process is relatively complex and difficult, the workload is heavy and prone to missed holes, the cleaning effect is inconsistent, the cleaning efficiency is low, and it is difficult to meet production needs. Furthermore, when the blind hole to be cleaned is small (threaded blind hole diameter less than M2.5, cylindrical blind hole less than Φ2.0mm), it is difficult for the operator to align the center of the hole during cleaning with a small air gun nozzle, which can cause damage to the hole and the hole wall, thereby causing a high rate of poor appearance of the part. In addition, using the above method to clean the blind hole often fails to achieve the desired cleaning effect, and traditional cleaning methods are usually performed outside the machine tool or by workers manually blowing away after the machine tool stops running, which will affect the product processing efficiency and product qualification rate. SUMMARY

[0003] Therefore, it is necessary to provide an online blind hole cleaning device that has high cleaning efficiency, good cleaning effect, is not easy to damage the product, and can improve the product processing efficiency and qualification rate.

[0004] An online blind hole cleaning device includes a cleaning mechanism and a clamping mechanism.

[0005] The cleaning mechanism includes a tool holder for fixing to the movable end of the CNC machine tool spindle, a magnetic base fixed to the tool holder, a magnetic adapter magnetically connected to the magnetic base, a high-pressure medium adapter in communication with the inner cavity of the magnetic adapter and used to access external high-pressure oil or high-pressure air, a nozzle detachably installed at the bottom of the magnetic adapter and in communication with the inner cavity of the magnetic adapter, and a spray part provided on the side of the nozzle facing away from the magnetic adapter.

[0006] The clamping mechanism comprises a base plate fixed on the worktable of a machine tool, a driving mechanism fixed on the base plate, and a clamping jaw mounted on the driving end of the driving mechanism and used for clamping the magnetic connector and the nozzle, which is opened and closed to clamp or release the magnetic connector and the nozzle when the driving mechanism is in operation.

[0007] In one embodiment, the driving mechanism comprises a cylinder for communicating with an external vacuum device, the cylinder comprises a cylinder barrel fixed on the upper surface of the base plate, a piston slidingly arranged in the inner cavity of the cylinder barrel and sealingly matched with the inner wall of the cylinder barrel, a pull rod fixed on the piston and protruding from the top of the cylinder barrel, the piston separates the inner cavity of the cylinder barrel to form a first air chamber and a second air chamber above the first air chamber, the outer wall of the cylinder barrel is provided with a first air pipe in communication with the first air chamber and an external air pressure device and a second air pipe in communication with the second air chamber and an external air pressure device, and the top of the cylinder barrel is provided with a cylinder port in communication with the inner cavity of the cylinder barrel, the ring side surface of the pull rod is slidingly matched and sealingly connected with the inner wall of the cylinder port.

[0008] In one embodiment, the clamping jaw comprises a plurality of elastic clamping pieces fixed on the upper surface of the cylinder barrel and arranged around the pull rod, at least the middle or lower part of the elastic clamping piece has a non-equal-diameter extrusion part, and the inner side surfaces of the plurality of elastic clamping pieces collectively form a clamping groove for clamping the magnetic connector and the nozzle; the driving mechanism further comprises a pull ring surrounding each elastic clamping piece and slidingly matched with the extrusion part of each elastic clamping piece, a pull pin penetrating through the two opposite outer side walls of the pull ring and at least two elastic clamping pieces and being fixedly connected with the pull rod, and the inner surface of the pull ring is provided with a flared portion matched with the shape of the extrusion part; the elastic clamping piece matched with the pull pin is provided with a guide hole extending in the height direction of the elastic clamping piece and used for penetrating the pull pin; the pull ring is lifted relative to the elastic clamping piece when the cylinder is in operation, so that each elastic clamping piece is closed or released.

[0009] In one embodiment, the inner side surface of the elastic clamping piece is provided with a boss, and the bosses of the plurality of elastic clamping pieces collectively separate the clamping groove to form a first clamping area for receiving the magnetic connector and a second clamping area below the first clamping area for accommodating the nozzle.

[0010] In one embodiment, the outer side surface of at least one elastic clamping piece is provided with an avoidance notch in communication with the clamping groove and used for penetrating the high-pressure medium connector, and the avoidance notch penetrates through the top surface of the elastic clamping piece.

[0011] In one embodiment, the pull ring is provided with two oppositely arranged threaded holes, and the pull pin penetrates through the two threaded holes and is threadedly connected with the pull ring.

[0012] In one of the embodiments, the clamping jaw further comprises a mounting ring fixedly connected with the bottom of each elastic clamping piece, and the upper surface of the cylinder is fixed with a plurality of fixed blocks arranged around the mounting ring; the fixed blocks are in inverted L-shaped structure, comprising a vertical part screw-connected with the upper surface of the cylinder, and a horizontal part fixed at the top end of the vertical part and perpendicular to the top end of the vertical part, the lower surface of the horizontal part abuts against the upper surface edge of the mounting ring, and the inner side surface of the horizontal part is spaced apart from the outer side surface of the bottom of the elastic clamping piece by a distance greater than 0.

[0013] In one of the embodiments, the cleaning mechanism further comprises a cap, which is sleeved on the nozzle and fixedly connected with the magnetic connector, and a sealing gasket is arranged at the connecting part of the cap and the magnetic connector.

[0014] In one of the embodiments, the nozzle has N injection parts in communication with the inner cavity of the nozzle, N is an integer greater than or equal to 1, and the inner contour shape of the cap is adapted to the outer contour shape of the nozzle.

[0015] In one of the embodiments, the lower surface of the magnetic base is spaced apart to form a plurality of grooves, and a powerful magnet is fixed in each groove, and the lower surface of the powerful magnet is flush with the lower surface of the magnetic base.

[0016] The online blind hole cleaning device is implemented, the cleaning mechanism and the clamping mechanism are arranged on the machine tool, so that the blind hole cleaning operation can be performed inside the machine tool, the product blind hole does not need to be cleaned during shutdown, the machining efficiency of the product is improved, the nozzle position can be adjusted and the blind hole of the product on the machine tool workbench can be cleaned by using the CNC machine tool spindle, the accurate positioning and cleaning of the blind hole are realized, the hole damage problem caused by the misalignment of the air gun nozzle in the small hole cleaning process is solved, the yield of the product appearance is improved, the depth of the nozzle inserted into the blind hole can be accurately controlled by the CNC machine tool spindle, the dirt and impurities are effectively removed, the cleaning effect and consistency are good, and the product qualification rate is high; the cleaning efficiency is greatly improved by using the in-machine cleaning. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 FIG. 1 is a structural schematic view of an online blind hole cleaning device according to an embodiment of the present application;

[0018] Figure 2 FIG. 2 is a structural schematic view of a cleaning mechanism according to an embodiment of the present application;

[0019] Figure 3 FIG. 3 is a structural schematic view of the cleaning mechanism cleaning the blind hole of the product according to an embodiment of the present application;

[0020] Figure 4 FIG. 4 is a structural schematic view of the connection between the tool handle and the magnetic connector according to an embodiment of the present application;

[0021] Figure 5 Structure diagram of multiple different size nozzles in one embodiment of the present application;

[0022] Figure 6 Structure diagram of the nozzle in another embodiment of the present application;

[0023] Figure 7 Structure diagram of the cap in the embodiment shown in the figure; Figure 6 Structure diagram of the cap in the embodiment shown in the figure;

[0024] Figure 8 Structure diagram of the cap in the embodiment shown in the figure; Figure 6 Structure diagram of the cap in the embodiment shown in the figure;

[0025] Figure 9 Structure diagram of the clamping mechanism in one embodiment of the present application;

[0026] Figure 10 Structure diagram of the clamping mechanism in one embodiment of the present application; DETAILED DESCRIPTION

[0027] In order to make the above objectives, features and advantages of the present application more apparent, specific embodiments of the present application will be described in detail below with reference to the accompanying drawings. In the following description, a large number of specific details are set forth in order to provide a thorough understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the spirit of the present application, so the present application is not limited to the specific embodiments disclosed below.

[0028] The present application aims to solve the problems of the prior art, particularly the problems of complicated manual operation, low efficiency, damaged parts, and inconsistent cleaning effect when cleaning small holes in the workshop. Therefore, the present application proposes an online blind hole cleaning device capable of cleaning product blind hole debris and impurities inside the machine tool. The device is directly installed on the numerical control machining equipment to control the accurate positioning and moving speed of the nozzle through numerical control program, so as to solve the problems of the prior art, such as low efficiency and poor effect.

[0029] Specifically, please refer to Figures 1-3 and Figures 9-10The online blind hole cleaning device 10 of the embodiment comprises a cleaning mechanism 100 and a clamping mechanism 200, wherein the cleaning mechanism 100 is connected with the CNC machine tool spindle so as to be driven by the CNC machine tool spindle to adjust the position and clean the blind hole on the product; the clamping mechanism 200 is fixed on the machine tool workbench and used to receive the cleaning component on the cleaning mechanism 100 during the non-cleaning operation so that the CNC machine tool spindle controls other components to process the product. Specifically, the cleaning mechanism 100 comprises a tool shank 110 used to be fixed on the movable end of the CNC machine tool spindle, a magnetic base 120 fixed on the tool shank 110, a magnetic joint 130 magnetically connected with the magnetic base 120, a high-pressure medium joint 140 in communication with the inner cavity of the magnetic joint 130 and used to access external high-pressure oil or high-pressure air, a nozzle 150 detachably installed on the bottom of the magnetic joint 130 and in communication with the inner cavity of the magnetic joint 130, and a spraying part 151 arranged on the side of the nozzle 150 away from the magnetic joint 130. In the embodiment, the tool shank 110 and the magnetic base 120 are fixedly connected together to form the connecting component of the cleaning mechanism 100, the magnetic joint 130, the nozzle 150 and the high-pressure medium joint 140 are fixedly connected together to form the cleaning component of the cleaning mechanism 100, and the connecting component and the cleaning component are detachably matched through magnetic connection so as to quickly disassemble and assemble the cleaning mechanism 100. The clamping mechanism 200 comprises a bottom plate 210 used to be fixed on the machine tool workbench, a driving mechanism 220 fixed on the bottom plate 210, and a clamping jaw 230 installed on the driving end of the driving mechanism 220 and used to clamp the magnetic joint 130 and the nozzle 150, which are opened and closed to clamp or release the magnetic joint 130 and the nozzle 150 when the driving mechanism 220 is actuated.

[0030] When the online blind hole cleaning device 10 works, the cleaning component of the cleaning mechanism 100 is separated from the connecting component, the cleaning component is placed on the clamping jaw 230 and clamped by the clamping jaw 230. At this time, the magnetic base 120 is fixed on the shank 110, at this time, the shank 110 can be normally installed into the machine tool and normally operated with the tool changing system of the machine tool. When the product blind hole is machined and needs to be cleaned, the controller of the CNC machine tool controls the CNC machine tool spindle to move out the shank 110 provided with the magnetic base 120 (the shank 110 is installed on the tool disc of the tool changing system, the controller controls the movable end of the CNC machine tool spindle to rotate, so that the shank 110 is rotated to the working position). Then, the shank 110 is driven by the CNC machine tool spindle to move down, and the magnetic base 120 is magnetically attracted to the magnetic connector 130, and the driving mechanism 220 is driven to release the cleaning component from the clamping jaw 230. Thus, when the shank 110 is moved up with the CNC machine tool spindle, the cleaning component will move away from the clamping jaw 230 with the magnetic base 120. When the nozzle 150 moves to the upper side of the product blind hole 20 to be cleaned, the nozzle 150 is moved down into the product blind hole under the driving of the CNC machine tool spindle, and the high-pressure medium connector 140 sprays high-pressure oil or high-pressure air into the blind hole to remove the chips in the blind hole. After the blind hole cleaning operation is completed, the cleaning component is returned to the clamping jaw 230 again under the driving of the CNC machine tool spindle, and the clamping jaw 230 is driven to close by the driving mechanism 220 to clamp the magnetic connector 130 and the nozzle 150. In this case, the shank 110 and the magnetic base 120 are moved up by the CNC machine tool spindle, so that the magnetic base 120 is separated from the magnetic connector 130. Thus, after the shank 110 returns to the original position of the machine tool, the CNC machine tool spindle can still control the tool to perform subsequent machining on the product.

[0031] In an embodiment, the magnetic base 120 is screw-connected with the shank 110. In another embodiment, the magnetic base 120 is buckle-connected with the shank 110. In another embodiment, the bottom of the shank 110 is provided with a movable clamping jaw 111, and the top of the magnetic base 120 is provided with a grabbing rod 121. Thus, the shank 110 can clamp the magnetic base 120 by grabbing the grabbing rod 121 with the movable clamping jaw 111. In this embodiment, the shank 110 is a standard shank of the CNC machine tool, which can be adaptively connected with the tool disc of the CNC machine tool spindle. Please refer to the description of the shank 110 for more details. Figure 1 With Figure 4 In this embodiment, a plurality of recesses are arranged on the lower surface of the magnetic base 120, and a strong magnet 122 is fixed in each recess. The lower surface of the strong magnet 122 is flush with the lower surface of the magnetic base 120. Preferably, four strong magnets 122 are uniformly arranged on the lower surface of the magnetic base 120 along a circular path. The strong magnets 122 can realize the installation of the cleaning component on the magnetic base 120 by attracting the magnetic connector 130.

[0032] In the embodiment, the magnetic joint 130 is a hollow structure, and a cavity of the magnetic joint 130 forms a high-pressure medium cavity, so that the high-pressure oil or high-pressure air introduced through the high-pressure medium joint 140 is transmitted to the nozzle 150. In the actual cleaning process of the blind hole, according to the characteristics of the equipment, the high-pressure oil (cutting oil) or high-pressure air can be introduced into the nozzle 150 through the high-pressure medium joint 140, so as to adapt to different equipment characteristics and improve the compatibility of the device. For products that need to be electroplated, only high-pressure air can be introduced into the blind hole for cleaning, so as to effectively blow away the cutting chips and oil stains in the blind hole, reduce the subsequent cleaning difficulty of the blind hole, and further improve the electroplating yield of the product. A mounting groove in communication with the cavity of the magnetic joint 130 is formed in the lower surface of the magnetic joint 130, and the nozzle 150 is embedded in the mounting groove and fixedly connected with the magnetic joint 130. In order to improve the stability of the installation of the nozzle 150, the cleaning mechanism 100 further comprises a cap 160, the cap 160 is sleeved on the nozzle 150 and fixedly connected with the magnetic joint 130, and a sealing gasket 170 is arranged at the connection position of the cap 160 and the magnetic joint 130. Preferably, the cap 160 is fixed on the magnetic joint 130 by screws; or the cap 160 is inserted into the mounting groove in an interference fit manner; or an internal thread is arranged in the mounting groove, and an external thread is arranged on the top of the cap 160 and threadedly connected with the inner surface of the mounting groove, so as to realize the fixed connection of the cap 160 and the magnetic joint 130. In this way, during the installation of the cap 160, the nozzle 150 is pressed and fixed on the magnetic joint 130 by the cap 160. The sealing gasket 170 is used for sealing the connection part of the nozzle 150 and the magnetic joint 130 and the connection part of the cap 160 and the magnetic joint 130, so as to prevent the pressure relief problem caused by air leakage or oil leakage, and ensure the cleaning effect of the nozzle 150 on the blind hole.

[0033] Please refer to Figures 5-8 In an embodiment, the nozzle 150 has N jetting parts 151 in communication with the cavity of the nozzle 150, N is an integer greater than or equal to 1, and the inner contour shape of the cap 160 is adapted to the outer contour shape of the nozzle 150. It should be noted that the nozzle 150 and the cap 160 of the embodiment are replaceable modules. During the blind hole cleaning operation, the nozzle 150 with a suitable size can be selected according to the depth and diameter of the blind hole, so as to realize the cleaning of blind holes with different specifications. The nozzle 150 with multiple jetting parts 151 can also be selected according to the distribution and number of blind holes. In this way, by replacing the nozzle 150 and the cap 160, the cleaning operation of blind holes with different specifications can be adapted, the device allows self-defined component replacement, and the simultaneous cleaning of multiple holes can be realized, so as to improve the cleaning efficiency. Among them, Figure 5Three different specifications of the nozzle 150 are shown, including a nozzle 150 with a length of 10 mm and a diameter of 1 mm, a nozzle 150 with a length of 10 mm and a diameter of 2 mm, and a nozzle 150 with a length of 20 mm and a diameter of 1 mm, to adapt to the cleaning operation of blind holes of different specifications; Figures 6-8 The structure of a nozzle 150 with three spray portions 151 arranged side by side and a cap 160 adapted to the nozzle 150 is shown. In actual operation, a nozzle 150 with more spray portions 151 can also be selected according to the arrangement and number of blind holes to improve the cleaning efficiency of the blind holes, which will not be described here.

[0034] Please refer again to Figures 1-3 and Figures 9-10The bottom plate 210 is provided with two installation gaps 211 on two opposite sides, and the bottom plate 210 is fixed on the machine tool worktable by screws passing through the installation gaps 211. The screw head lower surface presses the upper surface of the bottom plate 210 to prevent the bottom plate 210 from moving on the machine tool worktable. The driving mechanism 220 includes a cylinder for communicating with an external vacuum device. The cylinder includes a cylinder barrel 221 fixed on the upper surface of the bottom plate 210, a piston 222 slidingly arranged in the inner cavity of the cylinder barrel 221 and sealingly matched with the inner wall of the cylinder barrel 221, a pull rod 223 fixed on the piston 222 and extending out of the top of the cylinder barrel 221, the piston 222 divides the inner cavity of the cylinder barrel 221 to form a first air chamber 224 and a second air chamber 225 above the first air chamber 224, the outer wall of the cylinder barrel 221 is provided with a first air pipe 2241 communicating with the first air chamber 224 and an external air pressure device and a second air pipe 2251 communicating with the second air chamber 225 and an external air pressure device, and the top of the cylinder barrel 221 is provided with a cylinder port communicating with the inner cavity of the cylinder barrel 221, and the ring side surface of the pull rod 223 is slidingly matched and sealingly connected with the inner wall of the cylinder port. Further, in the embodiment, the bottom of the cylinder barrel 221 is provided with a cylinder cover 226, the cylinder cover 226 is screw-connected with the bottom plate 210 and the cylinder barrel 221 respectively, and the connecting part of the cylinder cover 226 and the cylinder barrel 221 is provided with a first sealing ring 2261 to prevent air leakage at the connecting part of the cylinder barrel 221 and the cylinder cover 226; the first air chamber 224 is formed between the cylinder cover 226 and the piston 222; the piston 222 includes a baffle 2221 fixedly connected with the bottom of the pull rod 223 and a second sealing ring 2222 sleeved on the ring side surface of the baffle 2221 and slidingly matched and sealingly connected with the inner wall of the cylinder barrel 221. When the cylinder works, compressed air is introduced into the first air pipe 2241, at this time, the air pressure in the first air chamber 224 increases, and the piston 222 will move to the second air chamber 225 under the pushing of the gas in the first air chamber 224. During this process, the gas in the second air chamber 225 is discharged through the second air pipe 2251, and the pull rod 223 rises under the driving of the piston 222. Conversely, when compressed air is introduced into the second air pipe 2251, the air pressure in the second air chamber 225 increases, and the piston 222 will move to the first air chamber 224 under the pushing of the gas in the second air chamber 225. During this process, the gas in the first air chamber 224 is discharged through the first air pipe 2241, and the pull rod 223 descends under the driving of the piston 222.

[0035] The clamping jaw 230 comprises a plurality of elastic clamping pieces 231 fixed on the upper surface of the cylinder 221 and arranged at intervals around the pull rod 223, at least the middle or lower part of the elastic clamping piece 231 has a non-equal diameter extrusion part 232, and the inner side surfaces of the plurality of elastic clamping pieces 231 jointly form a clamping groove for clamping the magnetic connector 130 and the nozzle 150; the driving mechanism 220 further comprises a pull ring 227 surrounding each elastic clamping piece 231 and in sliding fit with the extrusion part 232 of each elastic clamping piece 231, two opposite outer walls penetrating the pull ring 227 and at least two elastic clamping pieces 231 and the pull rod 223 fixedly connected, the inner surface of the pull ring 227 is provided with a flared part 2271 matched with the shape of the extrusion part 232; the elastic clamping piece 231 matched with the pull rod 228 is provided with a guide hole 233 extending along the height direction of the elastic clamping piece 231 and used for penetrating the pull rod 228; the pull ring 227 is lifted relative to the elastic clamping piece 231 during the working of the cylinder, so that each elastic clamping piece 231 is folded or released. In the embodiment, the pull rod 228 can only penetrate two oppositely arranged elastic clamping pieces 231, can simultaneously penetrate three elastic clamping pieces 231 or four elastic clamping pieces 231, for example, when the clamping jaw 230 comprises three elastic clamping pieces 231 arranged at intervals in the circumferential direction, one end of the pull rod 228 penetrates one elastic clamping piece 231, the other end of the pull rod 228 penetrates the adjacent parts of the other two elastic clamping pieces 231, so that the pull rod 228 simultaneously penetrates three elastic clamping pieces 231; when the clamping jaw 230 comprises four elastic clamping pieces 231 arranged at intervals in the circumferential direction, one end of the pull rod 228 penetrates the adjacent parts of two elastic clamping pieces 231, the other end of the pull rod 228 penetrates the adjacent parts of the other two elastic clamping pieces 231, so that the pull rod 228 simultaneously penetrates four elastic clamping pieces 231.

[0036] In the embodiment, the diameter of the extrusion portion 232 gradually decreases from bottom to top. During the operation of the cylinder, when the pull rod 223 is lowered under the drive of the piston 222, the pull stud 228 moves downward along the guide hole 233 under the drive of the pull rod 223, and pulls the pull ring 227 to lower relative to the elastic clamping piece 231. At this time, the flared portion 2271 of the pull ring 227 presses the extrusion portion 232 on the outer side of the elastic clamping piece 231, the restraint of the pull ring 227 on the elastic clamping piece 231 increases, so that the elastic clamping pieces 231 are close to each other to clamp the magnetic connector and the nozzle 150 in the clamping groove. When the pull rod 223 is raised under the drive of the piston 222, the pull stud 228 moves upward along the guide hole 233 under the drive of the pull rod 223, and pulls the pull ring 227 to rise relative to the elastic clamping piece 231. At this time, the flared portion 2271 of the pull ring 227 is separated from the extrusion portion 232 on the outer side of the elastic clamping piece 231, the restraint of the pull ring 227 on the elastic clamping piece 231 decreases or is released, the elastic clamping piece 231 restores the deformation and releases the magnetic connector and the nozzle 150, so as to take down the cleaning component from the clamping mechanism 200. When the diameter of the extrusion portion 232 gradually increases from bottom to top, the action of the elastic clamping piece 231 is opposite to the above process, which will not be described here. In the embodiment, the inner side of the elastic clamping piece 231 refers to the side of the elastic clamping piece 231 located on the clamping groove, and the outer side of the elastic clamping piece 231 refers to the side of the elastic clamping piece 231 away from the clamping groove. In other embodiments, the above explanation can be referred to.

[0037] It should be noted that in the embodiment, each elastic clamping piece 231 can be fixed on the upper surface of the cylinder barrel 221, or the plurality of elastic clamping pieces 231 can be integrally formed. Preferably, in the embodiment, the clamping jaw 230 further comprises a mounting ring 234 fixedly connected with the bottom of each elastic clamping piece 231. The elastic clamping piece 231 can be obtained by spacing a plurality of notches on the upper surface of the elastic cylindrical structure with the mounting ring 234, and the plurality of notches divide the elastic cylindrical structure to form a plurality of elastic clamping pieces 231. The upper surface of the cylinder barrel 221 is fixed with a plurality of fixed blocks 235 arranged around the mounting ring 234 and spaced apart; the fixed block 235 is in an inverted L-shaped structure, comprising a vertical portion 2351 screw-connected with the upper surface of the cylinder barrel 221, and a horizontal portion 2352 fixed at the top end of the vertical portion 2351 and perpendicular to the top end of the vertical portion 2351, the lower surface of the horizontal portion 2352 abuts against the edge of the upper surface of the mounting ring 234 to limit the position of the clamping jaw 230, avoiding the movement of the clamping jaw 230 on the upper surface of the cylinder barrel 221; the inner side of the horizontal portion 2352 is greater than 0 from the outer side of the bottom of the elastic clamping piece 231. Preferably, the outer side of the elastic clamping piece 231 is a convex circular arc surface, the inner side of the horizontal portion 2352 is a concave circular arc surface, and the inner sides of the horizontal portions 2352 of the plurality of fixed blocks 235 jointly enclose an opening and closing range for limiting the clamping jaw 230.

[0038] Further, the inner side of the elastic clamping piece 231 is provided with a boss 236, and the bosses 236 of the plurality of elastic clamping pieces 231 jointly divide the clamping groove to form a first clamping area 237 for accommodating the magnetic connector 130 and a second clamping area 238 located below the first clamping area 237 and used for accommodating the nozzle 150. During the clamping process of the cleaning component, the boss 236 can accommodate the lower surface of the magnetic connector 130, so that the clamping jaw 230 supports the cleaning component in the relaxed state. The width or inner diameter of the second clamping area 238 is greater than the width or diameter of the nozzle 150, so as to avoid the problem of damage to the nozzle 150 caused by the extrusion of the clamping jaw 230. That is, in the embodiment, the positioning of the cleaning component is mainly realized by the extrusion of the inner wall of the elastic clamping jaw 230 to the magnetic connector during the clamping of the cleaning component. In addition, the outer side of at least one elastic clamping piece 231 is provided with a relief gap 239 which is in communication with the clamping groove and is used for penetrating the high-pressure medium connector 140, and the relief gap 239 penetrates the top surface of the elastic clamping piece 231. That is, the relief gap 239 can be provided only on the top of one elastic clamping piece 231 to penetrate the high-pressure medium connector 140, or a gap can be provided on the cooperation part of the adjacent two elastic clamping pieces 231 to form the relief gap 239 together, so as to avoid interference between the elastic clamping piece 231 and the high-pressure medium connector 140 during the clamping of the cleaning component. In addition, two oppositely arranged threaded holes are provided on the pull ring 227, and the pull pin 228 penetrates the two threaded holes and is threadedly connected with the pull ring 227, so as to realize the fixed cooperation between the pull pin 228 and the pull ring 227, and to drive the pull ring 227 to ascend and descend under the drive of the pull rod 223.

[0039] The online blind hole cleaning device 10 is implemented, the cleaning mechanism 100 and the clamping mechanism 200 are arranged on the machine tool, so that the blind hole cleaning operation can be carried out in the machine tool, and the product blind hole does not need to be cleaned during shutdown, thereby improving the machining efficiency of the product; the position of the nozzle 150 can be adjusted and the blind hole of the product on the machine tool workbench can be cleaned by using the CNC machine tool spindle, precise positioning and cleaning of the blind hole are realized, the problem of hole damage caused by the misalignment of the air gun nozzle 150 in the hole cleaning process is solved, and the yield of the product appearance is improved; the CNC machine tool spindle can accurately control the depth of the nozzle 150 inserted into the blind hole, effectively remove dirt and impurities, the cleaning effect and consistency are good, and the product qualified rate is high; the machine cleaning is adopted, and the cleaning efficiency is greatly improved.

[0040] The technical features of the above-described embodiments can be combined arbitrarily, and in order to make the description simple, not all possible combinations of the technical features in the above-described embodiments are described, but as long as the combinations of the technical features do not exist contradictory, they should be considered as the scope of the present disclosure.

[0041] The above-described embodiments only express several implementation manners of the utility model, the description is more specific and detailed, but can not therefore be understood as the limitation of the utility model patent range. It should be pointed out that for ordinary skilled person in the art, without departing from the utility model concept, several modifications and improvements can be made, which belong to the protection range of the utility model. Therefore, the protection range of the utility model patent should be subject to the appended claims.

Claims

1. An in-line blind hole cleaning device, characterized by, The cleaning mechanism and the clamping mechanism are included. The cleaning mechanism includes a tool holder fixed on the movable end of the main shaft of the CNC machine tool, a magnetic base fixed on the tool holder, a magnetic connector magnetically connected with the magnetic base, a high-pressure medium connector in communication with the inner cavity of the magnetic connector and used for accessing external high-pressure oil or high-pressure air, and a nozzle detachably installed at the bottom of the magnetic connector and in communication with the inner cavity of the magnetic connector, wherein the side of the nozzle away from the magnetic connector is provided with a spraying part. The clamping mechanism includes a bottom plate fixed on the worktable of the machine tool, a driving mechanism fixed on the bottom plate, and a clamping jaw installed on the driving end of the driving mechanism and used for clamping the magnetic connector and the nozzle, wherein the clamping jaw is opened and closed to clamp or release the magnetic connector and the nozzle when the driving mechanism is actuated.

2. The in-line blind hole cleaning device of claim 1, wherein, The driving mechanism includes a cylinder in communication with an external vacuum device, wherein the cylinder includes a cylinder barrel fixed on the upper surface of the bottom plate, a piston slidingly arranged in the inner cavity of the cylinder barrel and in sealing engagement with the inner wall of the cylinder barrel, and a pull rod fixed on the piston and protruding from the top of the cylinder barrel, the piston divides the inner cavity of the cylinder barrel into a first air chamber and a second air chamber located above the first air chamber, the outer wall of the cylinder barrel is provided with a first air pipe in communication with the first air chamber and an external air pressure device and a second air pipe in communication with the second air chamber and the external air pressure device, and the top of the cylinder barrel is provided with a cylinder port in communication with the inner cavity of the cylinder barrel, and the ring side surface of the pull rod is in sliding engagement and sealing connection with the inner wall of the cylinder port.

3. The in-line blind hole cleaning device of claim 2, wherein, The clamping jaw includes a plurality of elastic clamping pieces fixed on the upper surface of the cylinder barrel and spaced around the pull rod, at least the middle or lower part of the elastic clamping piece has a non-equal-diameter extrusion part, and the inner side surfaces of the plurality of elastic clamping pieces collectively form a clamping groove for clamping the magnetic connector and the nozzle; the driving mechanism further includes a pull ring surrounding each elastic clamping piece and in sliding engagement with the extrusion part of each elastic clamping piece, a pull pin penetrating through the two opposite outer side walls of the pull ring and at least two elastic clamping pieces and fixedly connected with the pull rod, and the inner surface of the pull ring is provided with a flared part matched with the shape of the extrusion part; the elastic clamping piece matched with the pull pin is provided with a guide hole extending in the height direction of the elastic clamping piece and used for penetrating the pull pin; and the pull ring is lifted relative to the elastic clamping piece when the cylinder works, so as to make each elastic clamping piece close or release the elastic clamping piece.

4. The in-line blind hole cleaning device of claim 3, wherein, The inner side surface of the elastic clamping piece is provided with a boss, and the bosses of the plurality of elastic clamping pieces collectively separate the clamping groove to form a first clamping area for receiving the magnetic connector and a second clamping area located below the first clamping area and used for accommodating the nozzle.

5. The in-line blind hole cleaning device of claim 4, wherein, At least one elastic clamping piece is provided with an avoidance notch in communication with the clamping groove and used for penetrating the high-pressure medium connector, and the avoidance notch penetrates the top surface of the elastic clamping piece.

6. The on-line blind hole cleaning apparatus of claim 3, wherein, The pull ring is provided with two oppositely arranged threaded holes, and the pull pin penetrates through the two threaded holes and is threadedly connected with the pull ring.

7. The in-line blind hole cleaning device of claim 3, wherein, The clamping jaw further comprises a mounting ring fixedly connected with the bottom of each elastic clamping piece, and a plurality of fixed blocks are fixedly arranged on the upper surface of the cylinder and surround the mounting ring; the fixed blocks are in inverted L-shaped structure, comprising a vertical part screw-connected with the upper surface of the cylinder, and a horizontal part fixedly arranged at the top end of the vertical part and perpendicular to the top end of the vertical part, the lower surface of the horizontal part abuts against the upper surface edge of the mounting ring, and the inner side surface of the horizontal part is farther than the outer side surface of the bottom of the elastic clamping piece.

8. The online blind hole cleaning apparatus of claim 1, wherein, The cleaning mechanism further comprises a cap, which is sleeved on the nozzle and fixedly connected with the magnetic joint, and a sealing gasket is arranged at the connecting part of the cap and the magnetic joint.

9. The in-line blind hole cleaning device of claim 8, wherein, The nozzle has N spray parts in communication with the nozzle inner cavity, N is an integer greater than or equal to 1, and the inner contour shape of the cap is adapted to the outer contour shape of the nozzle.

10. The in-line blind hole cleaning device of claim 1, wherein, The lower surface of the magnetic base is provided with a plurality of grooves at intervals, and a strong magnet is fixed in each groove, and the lower surface of the strong magnet is flush with the lower surface of the magnetic base.

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