Continuous milling device for exterior of anchoring nut

Abstract

The invention discloses an anchoring nut outer square continuous milling device which is characterized in that an outer square milling assembly is installed on a main shaft of a machine tool body, a floating type clamp used for anchoring a nut is arranged on the machine tool body, and the cutting track of the outer square milling assembly is tangent to the outer circle of the anchoring nut on the floating type clamp; the outer square milling assembly comprises two circular milling cutters which are symmetrically arranged and slidably mounted on the main shaft, and the cutting tracks of the circular milling cutters are tangent to the outer circle of the anchoring nut; the floating clamp comprises a fixed chuck assembly and a floating chuck assembly, the fixed chuck assembly is driven by a motor to rotate, the floating chuck assembly is driven by the fixed chuck assembly to rotate, and a plurality of variable-pitch clamping cavities used for anchoring nuts are formed between the fixed chuck assembly and the floating chuck assembly. And the clamping cavity with the smallest caliber is matched with the anchoring nut and is close to the outer square milling assembly. According to the device, by means of a variable-pitch clamping cavity generated by the floating type clamp, the clamping and milling processes of the anchoring nut are greatly facilitated, and the working efficiency and the yield are improved.

Description

Technical Field

[0001] The invention relates to the technical field of anchor nut processing, in particular to an anchor nut outer continuous milling device. Background Art

[0002] Anchor nuts are one of the common components in anchor systems and are usually used in conjunction with anchor rods. For ease of use, anchor nuts are generally processed with polygonal outer squares on their periphery, such as the common pentagonal outer square anchor nuts and hexagonal outer square anchor nuts. The existing method for processing the outer square of anchor nuts is to clamp the anchor nuts with a machine tool chuck and then turn them. The clamping and loosening process is particularly time-consuming and has extremely low work efficiency.

[0003] At present, the prior art provides processing equipment that can continuously turn anchor nuts, such as the patent document with publication number CN110860726A and the name of a milling device for hexagonal nut milling processing, which provides a technical means that can clamp multiple nuts and perform continuous processing. However, in this technical means, the first nut and the fixing ring of the fixing device clamp and fix the semi-finished hexagonal nut to be processed (equivalent to the anchor nut), and at this time, the semi-finished hexagonal nut to be processed is mounted on the second adjusting rod.

[0004] The method of clamping the anchor nut provided by the above decoration requires disassembly and assembly of the first nut each time, and cannot avoid the clamping and loosening process, which wastes time and reduces work efficiency. Moreover, because the anchor nut is conveniently mounted on the second adjusting rod, there is generally a matching gap between the two, which causes the anchor nut to shake and rotate along the axis of the second adjusting rod during turning. The clamping of the anchor nut is not stable, and problems such as rough cutting surface, external burrs and flash may occur, thereby affecting the processing quality. Summary of the invention

[0005] The purpose of the present invention is to provide an anchor nut external continuous milling device to solve the problems of the existing nut external milling processing device that the clamping process wastes time, reduces work efficiency, and the clamping effect is unstable, affecting the processing quality.

[0006] In order to solve the above technical problems, the present invention adopts the following technical solutions: A continuous milling device for the outer side of an anchor nut comprises a machine tool body, an outer side milling assembly is installed on the main shaft of the machine tool body, a floating fixture for the anchor nut is arranged on the machine tool body, and the cutting track of the outer side milling assembly is tangent to the outer circle of the anchor nut on the floating fixture; wherein: The outer milling assembly is two circular milling cutters symmetrically arranged and slidably mounted on the spindle, the circular milling cutters are locked with the spindle by screws, and the cutting track of the circular milling cutters is tangent to the outer circle of the anchor nut on the floating fixture; The floating clamp includes a fixed chuck assembly and a floating chuck assembly. The fixed chuck assembly is driven to rotate by a motor, and the floating chuck assembly is driven to rotate by the fixed chuck assembly. A plurality of variable-distance clamping cavities for the anchor nut are formed between the fixed chuck assembly and the floating chuck assembly, and the clamping cavity with the smallest diameter is adapted to the anchor nut and close to the external milling assembly.

[0007] A further technical solution is: the fixed chuck assembly includes a main shaft, a fixed chuck and a motor, the main shaft is connected to the power output end of the motor, the fixed chuck is installed on the main shaft, and a variable-distance clamping cavity for the anchor nut is formed between the side outer edge of the fixed chuck and the floating chuck assembly.

[0008] A further technical solution is: the floating chuck assembly includes a secondary shaft, a floating chuck, an elastic component, a push rod and a stop wheel, the secondary shaft is mounted on the machine tool body, the floating chuck is rotatably mounted on the secondary shaft, and a variable-distance clamping cavity for the anchor nut is formed between the floating chuck and the fixed chuck assembly, the inner end of the secondary shaft is provided with a ball head adapted to the floating chuck, the elastic component is mounted on the secondary shaft and pressed against the outer side surface of the floating chuck, at least one push rod is slidably mounted on the floating chuck, and the push rod is connected to the fixed chuck assembly, and the stop wheel is rotatably mounted on the machine tool body and pressed against the outer side surface of the floating chuck.

[0009] A further technical solution is: the elastic component includes a baffle and a plurality of springs, the baffle is rotatably mounted on the secondary shaft, and the springs respectively press against the baffle and the floating chuck.

[0010] A further technical solution is: a tightening nut is threadedly mounted on the secondary shaft and presses against the outer side of the baffle.

[0011] A further technical solution is that an anti-dropping block is arranged at one end of the push rod extending outward from the outer side of the floating chuck.

[0012] A further technical solution is that a positioning pin and a locking nut threadedly connected to the positioning pin and pressing the anchor nut are arranged in the variable distance clamping cavity.

[0013] A further technical solution is that the positioning pin is arranged on the fixed chuck assembly.

[0014] A further technical solution is: a slide groove is arranged in the variable distance clamping cavity, a V-shaped clip is detachably installed in the slide groove, and the V-shaped clip is adapted to the outer side of the anchor nut.

[0015] Compared with the prior art, the present invention can achieve at least one of the following beneficial effects: The present invention provides a continuous milling device for the outer side of an anchor nut, which greatly facilitates the clamping and milling process of the anchor nut by means of a variable-distance clamping cavity generated by a floating clamp, thereby improving work efficiency and output; The variable-distance clamping cavity can change the spacing size, that is, the clamping distance between the fixed chuck assembly and the floating chuck assembly. When the clamping distance is maximum, it is convenient to install the anchor nut. When the clamping distance is minimum, the anchor nut is clamped to facilitate milling. When the clamping distance is between the maximum and minimum or reaches the maximum again, it is convenient to remove the anchor nut after cutting or automatically disengage. The main thing is that when the variable-distance clamping cavity is active, it greatly reduces the clamping time of the anchor nut and optimizes the clamping method, reduces workload and manpower input, and the clamping effect is stable to ensure milling quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 The present invention is a schematic structural diagram of a continuous milling device for the outer side of an anchor nut.

[0017] Figure 2 For the present invention Figure 1 Schematic diagram of the structure of the floating fixture.

[0018] Figure 3 For the present invention Figure 1 Schematic diagram of the structure of the variable-distance clamping cavity.

[0019] Reference numerals: 1, external milling assembly; 2, anchor nut; 3, floating clamp; 4, fixed chuck assembly; 5, floating chuck assembly; 6, main shaft; 7, fixed chuck; 8, secondary shaft; 9, floating chuck; 10, elastic assembly; 11, push rod; 12, stop wheel; 13, ball head; 14, stop plate; 15, spring; 16, tightening nut; 17, anti-drop block; 18, variable distance clamping cavity. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0021] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features of the embodiments may be combined with each other.

[0023] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0024] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the invented product is usually placed when in use, or the positions or positional relationships commonly understood by those skilled in the art, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0025] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0026] Embodiment 1: In this embodiment, Figure 1 and Figure 2 As shown, a continuous milling device for the outer side of an anchor nut comprises a machine tool body, an outer side milling assembly 1 is installed on the main shaft of the machine tool body, a floating fixture 3 for an anchor nut 2 is arranged on the machine tool body, and the cutting track of the outer side milling assembly 1 is tangent to the outer circle of the anchor nut 2 on the floating fixture 3; wherein, The external milling assembly 1 is two circular milling cutters symmetrically arranged and slidably mounted on the spindle. The circular milling cutters are locked to the spindle by screws, and the cutting track of the circular milling cutters is tangent to the outer circle of the anchor nut 2 on the floating fixture 3; The floating clamp 3 includes a fixed chuck assembly 4 and a floating chuck assembly 5. The fixed chuck assembly 4 is driven to rotate by a motor, and the floating chuck assembly 5 is driven to rotate by the fixed chuck assembly 4. A plurality of variable-distance clamping cavities 18 for anchoring nuts 2 are formed between the fixed chuck assembly 4 and the floating chuck assembly 5, and the clamping cavity with the smallest diameter is adapted to the anchoring nut 2 and close to the external milling assembly 3.

[0027] By manually placing a feeding mechanism (sliding chute) such as the one in the anchor clip slitting device with the publication number CN210498586U, the unmilled anchor nut 2 is fed into the variable distance clamping cavity 18 which rotates continuously and slowly at a certain speed. The rotation speed can be appropriately adjusted according to the working speed of each worker. At this time, the variable distance clamping cavity 18 is in a non-minimum state, that is, the clamping distance between the fixed chuck assembly 4 and the floating chuck assembly 5 is large, at least larger than the outer diameter of the anchor nut 2. As the floating clamp 3 rotates, the anchor nut 2 is moved to the outer milling assembly. 1, the clamping distance between the fixed chuck assembly 4 and the floating chuck assembly 5 is small, at least the two can clamp the anchor nut 2, which is convenient for two circular milling cutters to mill the two outer sides of the anchor nut 2. After completing milling once, the floating clamp 3 continues to rotate, and the clamping distance between the fixed chuck assembly 4 and the floating chuck assembly 5 begins to increase. The clamped anchor nut 2 is separated from the variable distance clamping cavity 18 and automatically falls down. The angle is changed again and placed in the empty variable distance clamping cavity 18 of the floating clamp 3, and the other two sides of the outer side are processed until the outer hexagon is formed. This clamping method is convenient for work. The whole work only needs to repeat the actions of picking up, adjusting the angle and placing it in the variable distance clamping cavity 18. It is simple and convenient, reduces workload and improves work efficiency.

[0028] Preferably, the fixed chuck assembly 4 includes a main shaft 6, a fixed chuck 7 and a motor, the main shaft 3 is connected to the power output end of the motor, the fixed chuck 5 is installed on the main shaft 3, and a variable distance clamping cavity 18 for anchoring the nut 2 is formed between the side outer edge of the fixed chuck 5 and the floating chuck assembly 5.

[0029] The main shaft 6 is driven by a motor to rotate the fixed chuck 7 , and the fixed chuck 7 in turn drives the floating chuck assembly 5 , specifically the floating chuck 9 .

[0030] Embodiment 2: On the basis of the above embodiments, the present embodiment shows that the floating chuck assembly 5 includes a secondary shaft 8, a floating chuck 9, an elastic component 10, a push rod 11 and a stop wheel 12, the secondary shaft 8 is mounted on the machine tool body, the floating chuck 9 is rotatably mounted on the secondary shaft 6, and a variable-distance clamping cavity 18 for anchoring the nut 2 is formed between the floating chuck 9 and the fixed chuck assembly 4, the inner end of the secondary shaft 8 is provided with a ball head 13 adapted to the floating chuck 9, the elastic component 10 is mounted on the secondary shaft 6 and pressed against the outer side surface of the floating chuck 9, at least one push rod 11 is slidably mounted on the floating chuck 9, and the push rod 11 is connected to the fixed chuck assembly 4, and the stop wheel 12 is rotatably mounted on the machine tool body 1 and pressed against the outer side surface of the floating chuck 9.

[0031] When the fixed chuck 7 rotates and the floating chuck 9 rotates together with the push rod 11, the stopper wheel 12 will press against the outer side of the floating chuck 9, so that the floating chuck 9 forms a certain angle with the fixed chuck 7. When the anchor nut 2 is located in the variable-distance clamping cavity 18, it will experience a process from a large spacing to a small spacing and then to a large spacing, that is, the clamping distance between the fixed chuck assembly and the floating chuck assembly changes. When the clamping distance is the largest, it is convenient to install the anchor nut. When the clamping distance is the smallest, the anchor nut is clamped to facilitate milling. When the clamping distance is between the maximum and the minimum or reaches the maximum again, it is convenient to remove the anchor nut after cutting or automatically disengage. The main reason is that when the variable-distance clamping cavity is active, the clamping time of the anchor nut is greatly reduced and the clamping method is optimized, which reduces the workload and manpower input, and the clamping effect is stable, ensuring the milling quality. The ball head 13 facilitates the tilting and rotation of the floating chuck 9 and prevents it from falling off; The push rod 11 can slide radially in the floating chuck 9 without interfering with the tilting and rotation of the floating chuck 9; The elastic component 10 is used to reset the floating chuck 9 when it is tilted and rotated, ensuring that the tilting and rotating angle is fixed, that is, the minimum spacing position of the variable-pitch clamping cavity 18 is fixed, and the cone sleeve is fixed during the cutting process of the saw blade 3.

[0032] Preferably, the elastic component 10 includes a baffle plate 14 and a plurality of springs 15 . The baffle plate 14 is rotatably mounted on the secondary shaft 8 , and the springs 15 respectively press against the baffle plate 14 and the floating chuck 9 .

[0033] The spring 15 has a retractable effect, which can ensure that the tilting and rotating angle of the floating chuck 9 is fixed.

[0034] Preferably, a tightening nut 16 is threadedly mounted on the secondary shaft 8 and presses against the outer side of the baffle plate 14 .

[0035] The tightening nut 16 is used to adjust the position of the baffle plate 14 on the secondary shaft 8 , thereby controlling the elastic force of the spring 15 on the floating chuck 9 .

[0036] Preferably, an anti-dropping block 17 is provided at one end of the push rod 11 extending outward from the floating chuck 9 .

[0037] Prevent the floating chuck 9 and the fixed chuck 7 from disengaging.

[0038] Embodiment three: Based on the above embodiments, this embodiment Figure 3 As shown, a positioning pin 19 and a locking nut 20 threadedly connected to the positioning pin 19 and pressing the anchor nut 2 are arranged in the variable distance clamping cavity 18 .

[0039] When the locating pin 19 is installed into the variable-distance clamping cavity 18, it is convenient for the anchor nut 2 to be quickly positioned and pre-fixed in the variable-distance clamping cavity 18. The locking nut 20 is used to cooperate with the locating pin 19 to lock and fix the anchor nut 2, further ensuring the fixing effect. However, it prolongs the loading and unloading time of the anchor nut 2, and the working speed of the device needs to be slowed down.

[0040] Preferably, the positioning pin 19 is disposed on the fixed chuck assembly 4 .

[0041] The positioning pin 19 is on the fixed chuck assembly 4 , and its position only changes on the circumference, which facilitates the insertion of the anchor nut 2 into the variable-distance clamping cavity 18 .

[0042] Preferably, a slide groove is provided in the variable-distance clamping cavity 18 , and a V-shaped clip 21 is detachably installed in the slide groove, and the V-shaped clip 21 is adapted to the outer side of the anchor nut 2 .

[0043] The V-shaped clip 21 can use the magnetic adsorption principle and the variable distance clamping cavity 18 for rapid assembly and disassembly. After the anchor nut 2 is processed into two adjacent outer square edges (i.e., the outer side has at least one corner), the V-shaped clip 21 is used to lock (i.e., fix) the outer square corner, facilitating the subsequent precise processing of the outer square edge (outer square corner).

[0044] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A continuous milling device for the outer side of an anchor nut, comprising a machine tool body, characterized in that: An external milling assembly (1) is mounted on the main shaft of the machine tool body, and a floating fixture (3) for anchoring the nut (2) is arranged on the machine tool body, wherein the cutting track of the external milling assembly (1) is tangent to the outer circle of the anchoring nut (2) on the floating fixture (3); wherein: The external milling assembly (1) is composed of two circular milling cutters which are symmetrically arranged and slidably mounted on the main shaft, the circular milling cutters are locked to the main shaft by screws, and the cutting track of the circular milling cutters is tangent to the outer circle of the anchor nut (2) on the floating fixture (3); The floating clamp (3) comprises a fixed chuck assembly (4) and a floating chuck assembly (5), wherein the fixed chuck assembly (4) is driven to rotate by a motor, and the floating chuck assembly (5) is driven to rotate by the fixed chuck assembly (4), and a plurality of variable-distance clamping cavities (18) for the anchor nut (2) are formed between the fixed chuck assembly (4) and the floating chuck assembly (5), and the clamping cavity with the smallest diameter is adapted to the anchor nut (2) and is close to the external milling assembly (3).

2. The anchor nut outer continuous milling device according to claim 1, characterized in that: The fixed chuck assembly (4) comprises a main shaft (6), a fixed chuck (7) and a motor, the main shaft (3) is connected to the power output end of the motor, the fixed chuck (5) is mounted on the main shaft (3), and a variable-distance clamping cavity (18) for the anchor nut (2) is formed between the side outer edge of the fixed chuck (5) and the floating chuck assembly (5).

3. The anchor nut outer continuous milling device according to any one of claims 1 or 2, characterized in that: The floating chuck assembly (5) comprises a secondary shaft (8), a floating chuck (9), an elastic assembly (10), a push rod (11) and a stop wheel (12); the secondary shaft (8) is mounted on the machine tool body; the floating chuck (9) is rotatably mounted on the secondary shaft (6); a variable-distance clamping cavity (18) for the anchor nut (2) is formed between the floating chuck (9) and the fixed chuck assembly (4); a ball head (13) matching the floating chuck (9) is provided at the inner end of the secondary shaft (8); the elastic assembly (10) is mounted on the secondary shaft (6) and pressed against the outer side surface of the floating chuck (9); at least one push rod (11) is slidably mounted on the floating chuck (9); the push rod (11) is connected to the fixed chuck assembly (4); and the stop wheel (12) is rotatably mounted on the machine tool body (1) and pressed against the outer side surface of the floating chuck (9).

4. The anchor nut outer continuous milling device according to claim 3, characterized in that: The elastic component (10) comprises a baffle (14) and a plurality of springs (15); the baffle (14) is rotatably mounted on the secondary shaft (8), and the springs (15) respectively press against the baffle (14) and the floating chuck (9).

5. The anchor nut outer continuous milling device according to claim 4, characterized in that: A tightening nut (16) is threadedly mounted on the secondary shaft (8) and is pressed against the outside of the baffle plate (14).

6. The anchor nut outer continuous milling device according to claim 3, characterized in that: An anti-drop block (17) is provided at one end of the push rod (11) extending outside the floating chuck (9).

7. The anchor nut outer continuous milling device according to claim 1, characterized in that: A positioning pin (19) and a locking nut (20) threadedly connected to the positioning pin (19) and pressing the anchor nut (2) are arranged in the variable-distance clamping cavity (18).

8. The anchor nut outer continuous milling device according to claim 7, characterized in that: The positioning pin (19) is arranged on the fixed chuck assembly (4).

9. The anchor nut outer continuous milling device according to claim 1, characterized in that: A slide groove is provided in the variable-distance clamping cavity (18), a V-shaped clip (21) is detachably installed in the slide groove, and the V-shaped clip (21) is adapted to fit the outer side of the anchor nut (2).

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