Automatic tool retraction mechanism for high strength fastener thread turning

Abstract

The utility model relates to fastener thread turning technical field, the utility model provides a kind of automatic tool retracting mechanism of high-strength fastener thread turning, it includes motor, cooling box and spray head.The utility model further includes transmission shaft, belt and stirring rod.In the utility model, when thread turning is carried out to high-strength fastener, tool is installed to tool rest, and motor is started by trigger assembly and tool retracting assembly, driving shaft is rotated, gear A and gear B are engaged, negative pressure is generated, cooling liquid enters gear pump box from cooling box through water pipe, then is sprayed out through conveying pipe and spray head, tool is cooled, splash guard effectively prevents cooling liquid splashing, water level sensor monitors water level, when low water level, staff can supplement water volume through water injection pipe, through above technical scheme, the technical problem that cooling liquid supply is unstable, cooling effect is poor in prior art is solved.

Description

Technical Field

[0001] This utility model relates to the field of fastener thread turning technology, specifically to an automatic tool retraction mechanism for high-strength fastener thread turning. Background Technology

[0002] In the thread turning of high-strength fasteners, automatic tool retraction is a crucial operational step. It ensures that the tool does not interfere excessively with the workpiece during machining, preventing tool damage or workpiece surface quality issues. Automatic tool retraction systems improve machining efficiency and accuracy while reducing human error.

[0003] According to a public announcement (publication number: CN202571508U), a high-efficiency automatic retraction tool holder for thread turning includes a tool holder body, a tool shank, a contact rod, an eccentric wheel, and a handle. The tool shank passes longitudinally through the tool holder body, and the contact rod passes laterally through the tool holder body and the tool shank. The handle is connected to the eccentric wheel, and a contact block is placed in the tool shank. One end of the contact rod is provided with a contact rod compression spring. The inner hole of the spring support passes through the lower part of the tool shank and is connected to the tool holder body. The lower part of the tool shank is equipped with a tool shank compression spring, and the eccentric wheel is connected to the spring support.

[0004] In the aforementioned application, although the tool retraction action can be effectively and stably completed during multiple operations through the precise cooperation between the tool holder body and the handle assembly, the tool temperature may rise sharply after prolonged high-load operation without timely and effective cooling, leading to tool overheating. Excessive temperature not only accelerates tool wear but may also cause tool breakage due to stress concentration, seriously affecting machining accuracy and production efficiency. Therefore, we propose an automatic tool retraction mechanism for high-strength fastener thread turning. Utility Model Content

[0005] To overcome the above-mentioned defects, this utility model provides an automatic tool retraction mechanism for thread turning of high-strength fasteners, which solves the technical problems of unstable coolant supply and poor cooling effect in the prior art.

[0006] According to one aspect, at least one embodiment of the present invention provides an automatic tool retraction mechanism for thread turning of high-strength fasteners, comprising: a tool holder, a triggering component provided on the side of the tool holder, a tool retraction component provided at the bottom of the tool holder, a mounting box fixedly connected to the bottom of the tool holder, and a cooling mechanism provided inside the mounting box; The cooling mechanism includes a motor, which is fixedly connected inside the mounting box. The output shaft of the motor is fixedly connected to a rotating shaft. A cooling box is fixedly connected inside the mounting box. A water inlet pipe is fixedly inserted through the side of the cooling box. A gear pump box is fixedly connected to the end of the water inlet pipe away from the cooling box. The side of the gear pump box is rotatably connected to the circumferential surface of the rotating shaft. Gear A is fixedly inserted through the circumferential surface of the rotating shaft. Gear B is rotatably connected inside the gear pump box. A delivery pipe is fixedly inserted through the top of the gear pump box. A nozzle is fixedly connected to the end of the delivery pipe away from the gear pump box. The purpose is to cool the repeatedly used cutting tools.

[0007] For example, in an automatic tool retraction mechanism for thread turning of high-strength fasteners provided in at least one embodiment of the present invention, a support shaft is rotatably connected to the top of the tool holder, and a splash guard is fixedly connected to the circumferential surface of the support shaft, the purpose of which is to prevent coolant from splashing.

[0008] A water injection pipe is fixedly inserted through the side of the cooling box, and a sealing plug is slidably connected inside the water injection pipe to ensure that the staff can replenish the inside of the cooling box.

[0009] A water level sensor is installed on the top of the cooling tank, and a support frame is fixedly connected to the top of the tool holder. The side of the support frame is fixedly connected to the circumference of the conveying pipe. The purpose is to ensure that the staff can detect the water level in time and to ensure the stability of the conveying pipe.

[0010] Gear A and gear B mesh with each other, and the nozzle is located below the splash guard. The purpose of this is to ensure that the rotation of gear A can drive gear B to rotate.

[0011] According to another aspect, at least one embodiment of this utility model also provides an automatic tool retraction mechanism for thread turning of high-strength fasteners, comprising: an anti-settling mechanism provided inside the mounting box, the anti-settling mechanism including a drive shaft rotatably connected inside the mounting box, a bevel gear one fixedly passing through the circumferential surface of the drive shaft, a bevel gear two fixedly passing through the circumferential surface of the drive shaft, a pulley one fixedly connected to the circumferential surface of the drive shaft, a belt provided on the circumferential surface of the pulley one, a control shaft passing through and rotatably connected to the top of the cooling box, a pulley two fixedly passing through the circumferential surface of the control shaft, and a stirring rod fixedly passing through the circumferential surface of the control shaft, the purpose of which is to prevent the coolant inside the cooling box from settling and affecting the cooling effect.

[0012] For example, in at least one embodiment of the present invention, an automatic tool retraction mechanism for thread turning of high-strength fasteners is provided, which further includes: a return spring is provided inside the stirring rod, the stirring rod is elastically connected to a telescopic column through the return spring, and a scraper is fixedly connected to one end of the telescopic column. The purpose is to ensure that the inside of the cooling box can be effectively scraped to prevent the accumulation of grease in the coolant.

[0013] The first bevel gear and the second bevel gear mesh with each other, and the first pulley is connected to the second pulley via a belt. The purpose is to ensure that the rotation of the first bevel gear can drive the second bevel gear to rotate, and at the same time, to ensure that the rotation of the first pulley can drive the second pulley to rotate via the belt.

[0014] The stirring rod, the return spring, and the telescopic column are provided in four units, and they are symmetrical to each other along the circumference of the control axis. The initial state of the return spring is relaxed, which is intended to achieve uniform force distribution, avoid system offset or deformation caused by uneven load, and further improve the accuracy and reliability of the system.

[0015] The scraper is provided in two parts and is symmetrical to each other along the vertical central axis of the control axis. The scraper contacts the inner wall of the cooling box through a return spring. The purpose is to ensure that the scraper always maintains an appropriate contact force to avoid scratching or damaging the inner wall, while effectively cleaning the inner wall of the cooling box.

[0016] The beneficial effects of the embodiments of this utility model are as follows: In this invention, through the cooperation of components such as the motor, cooling tank, and nozzle of the cooling mechanism, when threading high-strength fasteners, the tool is installed on the tool holder, and the motor is started by the trigger component and the tool retraction component, driving the rotating shaft to rotate, causing gear A and gear B to mesh, generating negative pressure, so that the coolant enters the gear pump box from the cooling tank through the water inlet pipe, and is then sprayed out through the delivery pipe and nozzle to cool the tool. The splash guard effectively prevents coolant from splashing, and the water level sensor monitors the water level. When the water level is low, the operator can add water through the water inlet pipe. This design can ensure stable cooling of the tool, improve machining accuracy, and extend tool life.

[0017] In this invention, the anti-settling mechanism utilizes the interplay of components such as the drive shaft, belt, and stirring rod. The rotating shaft drives bevel gear one to rotate, which in turn drives the drive shaft, pulley one, belt, and pulley two, ultimately causing the control shaft and stirring rod to rotate and agitate the coolant to prevent accumulation. Simultaneously, a return spring drives the telescopic column to move, causing the scraper to contact the inner wall of the cooling tank and remove grease. This design effectively ensures uniform agitation and cleaning of the coolant, improving cooling efficiency and extending equipment lifespan. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model, the accompanying drawings used in the description of the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are merely some exemplary embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the content of the exemplary embodiments of this utility model and these drawings without any creative effort.

[0019] Figure 1 This is a structural schematic diagram of the overall three-dimensional appearance of the tool holder in one embodiment of the present invention; Figure 2 This is a structural schematic diagram of the overall three-dimensional left sectional view of the tool holder in one embodiment of the present invention; Figure 3 This is a structural schematic diagram of a three-dimensional rear sectional view of the tool holder in one embodiment of the present invention; Figure 4 As one embodiment of this utility model Figure 2 A three-dimensional magnified structural diagram of A in the diagram; Figure 5 As one embodiment of this utility model Figure 3 A three-dimensional magnified structural diagram of B.

[0020] In the diagram: 1. Tool holder; 2. Trigger assembly; 3. Tool retraction assembly; 4. Mounting box; 5. Cooling mechanism; 51. Motor; 52. Rotating shaft; 53. Cooling box; 54. Water inlet pipe; 55. Gear pump box; 56. Gear A; 57. Gear B; 58. Delivery pipe; 59. Nozzle; 510. Support shaft; 511. Splash guard; 512. Water injection pipe; 513. Sealing plug; 514. Water level sensor; 515. Support frame; 6. Anti-sedimentation mechanism; 61. Drive shaft; 62. Bevel gear one; 63. Bevel gear two; 64. Pulley one; 65. Belt; 66. Control shaft; 67. Pulley two; 68. Stirring rod; 69. Return spring; 610. Telescopic column; 611. Scraper. Detailed Implementation

[0021] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it.

[0022] To keep the drawings concise, only the parts relevant to the utility model are shown schematically in each drawing; these do not represent the actual structure of the product. Furthermore, for ease of understanding, in some drawings, only one of the components with the same structure or function is schematically shown, or only one is labeled. In this document, "a" not only means "only one," but can also mean "more than one," and "several" includes "two" and "more than two."

[0023] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0024] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0025] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of description and simplification of operation, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0026] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0027] like Figures 1-5 As shown, it illustrates an automatic tool retraction mechanism for thread turning of high-strength fasteners in one embodiment of the present invention, comprising: a tool holder 1, a triggering component 2 provided on the side of the tool holder 1, a tool retraction component 3 provided at the bottom of the tool holder 1, a mounting box 4 fixedly connected to the bottom of the tool holder 1, and a cooling mechanism 5 provided inside the mounting box 4; The cooling mechanism 5 includes a motor 51, which is fixedly connected inside the mounting box 4. The output shaft of the motor 51 is fixedly connected to a rotating shaft 52. A cooling box 53 is fixedly connected inside the mounting box 4. A water inlet pipe 54 is fixedly inserted through the side of the cooling box 53. A gear pump box 55 is fixedly connected to the end of the water inlet pipe 54 away from the cooling box 53. The side of the gear pump box 55 is rotatably connected to the circumferential surface of the rotating shaft 52. A gear A 56 is fixedly inserted through the circumferential surface of the rotating shaft 52. A gear B 57 is rotatably connected inside the gear pump box 55. A delivery pipe 58 is fixedly inserted through the top of the gear pump box 55. A nozzle 59 is fixedly connected to the end of the delivery pipe 58 away from the gear pump box 55. The purpose of this mechanism is to cool down the repeatedly used cutting tools.

[0028] In some examples, the top of the tool holder 1 is rotatably connected to a support shaft 510, and a splash guard 511 is fixedly connected to the circumferential surface of the support shaft 510 to prevent coolant from splashing.

[0029] A water injection pipe 512 is fixedly inserted through the side of the cooling box 53. A sealing plug 513 is slidably connected inside the water injection pipe 512 to ensure that the staff can replenish the inside of the cooling box 53.

[0030] A water level sensor 514 is installed on the top of the cooling tank 53, and a support frame 515 is fixedly connected to the top of the tool holder 1. The side of the support frame 515 is fixedly connected to the circumferential surface of the conveying pipe 58. The purpose is to ensure that the staff can detect the water level in time and at the same time ensure the stability of the conveying pipe 58.

[0031] Gear A56 and gear B57 mesh with each other, and the nozzle 59 is located below the splash guard 511. The purpose of this is to ensure that the rotation of gear A56 can drive gear B57 to rotate.

[0032] For example, such as Figures 1-5 As shown, when thread turning is required on high-strength fasteners, the operator installs the tool into the tool holder 1, and then operates through the trigger assembly 2 and the tool retraction assembly 3. At the same time, the motor 51 is started, and the output shaft of the motor 51 drives the rotating shaft 52 to rotate. The rotation of the rotating shaft 52 drives the gear A56 to rotate. Through the meshing of gear A56 and gear B57, the rotation of gear A56 drives the rotation of gear B57, thereby creating a negative pressure inside the gear pump box 55. This causes the coolant inside the cooling tank 53 to enter the gear pump box 55 through the water inlet pipe 54, then enter the delivery pipe 58, and finally be sprayed out through the nozzle 59 to cool the tool in use. The splash guard 511 effectively prevents coolant from splashing. When the water level inside the cooling tank 53 is too low, the water level sensor 514 will sound an alarm. At this time, the operator can pull out the sealing plug 513 and replenish the water inside the cooling tank 53 through the water inlet pipe 512.

[0033] like Figures 1-5 As shown, this invention illustrates an automatic retraction mechanism for thread turning of high-strength fasteners in another embodiment, comprising: an anti-settling mechanism 6 provided inside the mounting box 4, the anti-settling mechanism 6 including a drive shaft 61 rotatably connected inside the mounting box 4, a bevel gear 62 fixedly passing through the circumferential surface of a rotating shaft 52, a bevel gear 63 fixedly passing through the circumferential surface of the drive shaft 61, a pulley 64 fixedly connected to the circumferential surface of the drive shaft 61, a belt 65 provided on the circumferential surface of the pulley 64, a control shaft 66 passing through and rotatably connected to the top of the cooling box 53, a pulley 67 fixedly passing through the circumferential surface of the control shaft 66, and a stirring rod 68 fixedly passing through the circumferential surface of the control shaft 66, the purpose of which is to prevent the coolant inside the cooling box 53 from settling and affecting the cooling effect.

[0034] In some examples, a return spring 69 is provided inside the stirring rod 68, and the stirring rod 68 is elastically connected to a telescopic column 610 through the return spring 69. A scraper 611 is fixedly connected to one end of the telescopic column 610. The purpose is to ensure that the interior of the cooling tank 53 can be effectively scraped to prevent the accumulation of grease in the coolant.

[0035] The first bevel gear 62 and the second bevel gear 63 mesh with each other. The first pulley 64 is connected to the second pulley 67 via the belt 65. The purpose is to ensure that the rotation of the first bevel gear 62 can drive the second bevel gear 63 to rotate, and at the same time, to ensure that the rotation of the first pulley 64 can drive the second pulley 67 to rotate via the belt 65.

[0036] The number of stirring rods 68, return springs 69 and telescopic columns 610 is set to four, and they are symmetrical to each other along the circumference of the control axis 66. The initial state of the return springs 69 is relaxed. The purpose is to achieve uniform force distribution, avoid system offset or deformation caused by uneven load, and further improve the accuracy and reliability of the system.

[0037] There are two scrapers 611, which are symmetrical to each other along the vertical central axis of the control shaft 66. The scrapers 611 contact the inner wall of the cooling box 53 through the return spring 69. The purpose is to ensure that the scrapers 611 always maintain appropriate contact force to avoid scratching or damaging the inner wall, while effectively cleaning the inner wall of the cooling box 53.

[0038] For example, such as Figures 1-5As shown, the rotation of the rotating shaft 52 simultaneously drives the first bevel gear 62 to rotate. The first bevel gear 62 meshes with the second bevel gear 63, causing the first bevel gear 62 to drive the transmission shaft 61 to rotate via the second bevel gear 63. The rotation of the transmission shaft 61 drives the first pulley 64 to rotate. The rotation of the first pulley 64 drives the second pulley 67 to rotate via the belt 65. The rotation of the second pulley 67 drives the control shaft 66 to rotate. The rotation of the control shaft 66 drives the stirring rod 68 to rotate. During the rotation of the stirring rod 68, the coolant inside the cooling tank 53 is stirred to prevent coolant accumulation. At the same time, the return spring 69 drives the telescopic column 610 to move, causing the telescopic column 610 to move and drive the scraper 611 to move. The scraper 611 moves and contacts the inside of the cooling tank 53. During the rotation of the stirring rod 68, the scraper 611 is driven to rotate via the telescopic column 610. During the rotation of the scraper 611, the grease on the inner wall of the cooling tank 53 is scraped off.

[0039] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. An automatic tool retraction mechanism for thread turning of high-strength fasteners, characterized in that, include: A tool holder (1) is provided with a trigger component (2) on its side and a tool retraction component (3) on its bottom. A mounting box (4) is fixedly connected to the bottom of the tool holder (1) and a cooling mechanism (5) is provided inside the mounting box (4). The cooling mechanism (5) includes a motor (51), which is fixedly connected inside the mounting box (4). The output shaft of the motor (51) is fixedly connected to a rotating shaft (52). A cooling box (53) is fixedly connected inside the mounting box (4). A water supply pipe (54) is fixedly connected through the side of the cooling box (53). A gear pump box (55) is fixedly connected to the end of the water supply pipe (54) away from the cooling box (53). The side of the gear pump box (55) is connected to the circumferential surface of the rotating shaft (52) and rotates through it. A gear A (56) is fixedly connected through the circumferential surface of the rotating shaft (52). A gear B (57) is rotatably connected inside the gear pump box (55). A delivery pipe (58) is fixedly connected through the top of the gear pump box (55). A nozzle (59) is fixedly connected to the end of the delivery pipe (58) away from the gear pump box (55).

2. The automatic tool retraction mechanism for high-strength fastener thread turning according to claim 1, characterized in that, The top of the tool holder (1) is rotatably connected to a support shaft (510), and a splash guard (511) is fixedly connected to the circumferential surface of the support shaft (510).

3. The automatic tool retraction mechanism for high-strength fastener thread turning according to claim 2, characterized in that, A water injection pipe (512) is fixedly inserted through the side of the cooling box (53), and a sealing plug (513) is slidably connected inside the water injection pipe (512).

4. The automatic tool retraction mechanism for thread turning of high-strength fasteners according to claim 3, characterized in that, A water level sensor (514) is provided on the top of the cooling box (53), and a support frame (515) is fixedly connected to the top of the tool holder (1). The side of the support frame (515) is fixedly connected to the circumferential surface of the conveying pipe (58).

5. The automatic tool retraction mechanism for high-strength fastener thread turning according to claim 4, characterized in that, The gear A (56) meshes with the gear B (57), and the nozzle (59) is located below the splash guard (511).

6. The automatic tool retraction mechanism for high-strength fastener thread turning according to claim 5, characterized in that, The installation box (4) is equipped with an anti-settling mechanism (6). The anti-settling mechanism (6) includes a drive shaft (61). The drive shaft (61) is rotatably connected to the inside of the installation box (4). A bevel gear (62) is fixedly passed through the circumferential surface of the rotating shaft (52). A bevel gear (63) is fixedly passed through the circumferential surface of the drive shaft (61). A pulley (64) is fixedly connected to the circumferential surface of the drive shaft (61). A belt (65) is provided on the circumferential surface of the pulley (64). A control shaft (66) is rotatably connected to the top of the cooling box (53). A pulley (67) is fixedly passed through the circumferential surface of the control shaft (66). A stirring rod (68) is fixedly passed through the circumferential surface of the control shaft (66).

7. The automatic tool retraction mechanism for high-strength fastener thread turning according to claim 6, characterized in that, The stirring rod (68) is provided with a return spring (69) inside. The stirring rod (68) is elastically connected to a telescopic column (610) through the return spring (69). A scraper (611) is fixedly connected to one end of the telescopic column (610).

8. The automatic tool retraction mechanism for high-strength fastener thread turning according to claim 7, characterized in that, The first bevel gear (62) meshes with the second bevel gear (63), and the first pulley (64) is connected to the second pulley (67) via a belt (65).

9. The automatic tool retraction mechanism for high-strength fastener thread turning according to claim 8, characterized in that, The number of stirring rods (68), return springs (69) and telescopic columns (610) is four, and they are symmetrical to each other along the circumference of the control axis (66). The initial state of the return springs (69) is a relaxed state.

10. An automatic tool retraction mechanism for thread turning of high-strength fasteners according to claim 9, characterized in that, There are two scrapers (611), which are symmetrical to each other along the vertical central axis of the control shaft (66). The scrapers (611) are in contact with the inner wall of the cooling box (53) through the return spring (69).

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