Automatic cutter loosening device for main shaft maintenance

Abstract

The utility model relates to the technical field of machining center main shaft components, and discloses an automatic cutter loosening device for main shaft maintenance, which comprises a main shaft body and a lock rod, the part containing sleeve is mounted in the lock containing cavity; the arc-shaped pin is arranged in a sliding groove formed in the lock containing cavity in a sliding mode. Wherein the bottom of the arc-shaped pin is clamped and embedded in a cutter assembly inserted into the bottom of the main shaft body, and the side face of the bottom end of the lock rod is in lap joint with the top of the arc-shaped pin. According to the automatic cutter loosening device for main shaft maintenance, the problems that in the prior art, when a main shaft is dismounted for maintenance, a cutter can be dismounted only by using a specific tool, and when the cutter is frequently replaced for testing, the cutter is moved to the specific tool for dismounting each time, so that the cutter dismounting is extremely tedious, and the efficiency of main shaft maintenance and detection is reduced are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of spindle assemblies of machining centers, and specifically relates to an automatic tool loosening device for spindle maintenance. Background Technique

[0002] When a machining center is working, the spindle is one of the parts that have the most frequent problems. When the spindle of the machining center needs to be repaired, it needs to be disassembled from the machining center, the spindle is disassembled for inspection, and during the inspection process, it is necessary to frequently install tools for testing to confirm the completion degree of spindle repair.

[0003] When installing the tool on the spindle, generally, a hydraulic cylinder is used for locking control, and the locking force is relatively large. In the prior art, when the spindle is disassembled for inspection, a specific tool is required to remove the tool. When frequently replacing the tool for testing, each disassembly and assembly is moved to a specific tool, so that the disassembly and assembly of the tool are extremely cumbersome, reducing the efficiency of spindle repair and detection. Content of the Utility Model

[0004] Aiming at the deficiencies of the prior art, the utility model provides an automatic tool loosening device for spindle maintenance, which solves the problems mentioned in the above background.

[0005] The utility model provides the following technical solution: an automatic tool loosening device for spindle maintenance, including a spindle body and a locking rod, including the spindle body:

[0006] A lock receiving cavity opened inside the spindle body;

[0007] A mounting sleeve installed inside the lock receiving cavity; and

[0008] An arc-shaped pin slidably arranged in a chute opened inside the lock receiving cavity;

[0009] Wherein, the bottom of the arc-shaped pin is clamped on a tool assembly inserted at the bottom of the spindle body, and the side of the bottom end of the locking rod abuts against the top of the arc-shaped pin;

[0010] The locking rod includes: a spring pressing cavity opened inside the spindle body, and a spring pressing component arranged inside the spring pressing cavity and sleeved on the locking rod.

[0011] Preferably, a pressure plug is slidably connected inside the mounting sleeve, and the pressure plug is arranged between the locking rod and the tool assembly.

[0012] Preferably, a gear is rotatably received inside the mounting sleeve, and the surface of the gear meshes with the inner side of the arc-shaped pin and the surface of the pressure plug respectively.

[0013] Preferably, a friction plate is arranged on the inner side of the arc-shaped pin near the bottom end, and the friction plate abuts against the tool assembly.

[0014] Preferably, a groove is formed in the inner wall of the sliding groove, and the position of the groove corresponds to the position of the friction plate.

[0015] Preferably, the bottom end of the locking rod is in the shape of a frustum of a cone, and the side surface of the frustum of the cone at the bottom end of the locking rod abuts against the top end of the arc-shaped pin.

[0016] Preferably, the elastic pressing assembly includes:

[0017] A limiting ring sleeved on the locking rod;

[0018] A disc spring that abuts against the side surface of the limiting ring and is movably arranged inside the elastic pressing cavity.

[0019] Compared with the prior art, the present utility model has the following beneficial effects:

[0020] 1. For the automatic tool loosening device for spindle maintenance, by setting the arc-shaped pin, when replacing the tool assembly, pressing the locking rod to push the pressure plug, and using the moving ability of the pressure plug to control the rotation of the gear, so that the arc-shaped pin is opened under the influence of the gear. When disassembling the spindle for maintenance, pressing the locking rod with any tool can achieve the effect of automatic tool loosening, without using a specific tool to disassemble the tool assembly, greatly improving the convenience when replacing the tool assembly for testing, and thus improving the efficiency of spindle maintenance and detection.

[0021] 2. For the automatic tool loosening device for spindle maintenance, by setting the bottom end of the locking rod in the shape of a frustum of a cone, when releasing the pressed locking rod, the locking rod rebounds under the influence of the elastic pressing assembly, and then uses the bottom end in the shape of a frustum of a cone to push the top of the arc-shaped pin, so that the arc-shaped pin is pressed at the bottom end under the influence of the pushing force, achieving the effect of automatically locking the tool assembly and improving the convenience of installing the tool assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0023] Figure 2 is a schematic sectional structure diagram of the present utility model;

[0024] Figure 3 is the present utility model Figure 2 the enlarged structure diagram at A in;

[0025] Figure 4 is a schematic diagram of the internal structure of the spindle body of the present utility model;

[0026] Figure 5 is a schematic sectional structure diagram of the spindle body of the present utility model;

[0027] Figure 6 is a schematic sectional structure diagram at the gear of the present utility model;

[0028] Figure 7 This is a schematic diagram of the unlocking structure of the present utility model.

[0029] In the figure: 1, main shaft body; 2, tool assembly; 3, lock rod; 4, spring pressure chamber; 5, spring pressure assembly; 51, disc spring; 52, limit ring; 6, lock housing chamber; 7, sliding groove; 8, arc-shaped pin; 9, groove; 10, sleeve; 11, gear; 12, plug; 13, friction plate. Specific embodiments

[0030] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0031] Please refer to Figure 1-7 , an automatic tool loosening device for spindle maintenance, including a main shaft body 1 and a lock rod 3, including the main shaft body 1:

[0032] A lock housing chamber 6 opened inside the main shaft body 1 is used to accommodate the mechanism for locking or loosening the tool assembly 2, so that the tool assembly 2 can achieve the effect of automatic loosening by the pressing of the lock rod 3;

[0033] A sleeve 10 installed inside the lock housing chamber 6; and

[0034] An arc-shaped pin 8 slidably arranged in a sliding groove 7 opened inside the lock housing chamber 6. There are six arc-shaped pins 8. When the bottoms of the six arc-shaped pins 8 are locked, they are spliced into a hoop-shaped clamping sleeve, so that the tool assembly 2 is locked in the main shaft body 1. When the lock rod 3 is pressed or loosened, the state of the arc-shaped pin 8 can be controlled through the mechanism inside the lock housing chamber 6 to achieve the effects of tool loosening and tool locking;

[0035] Among them, the bottom of the arc-shaped pin 8 is clamped on the tool assembly 2 inserted at the bottom of the main shaft body 1, and the side of the bottom end of the lock rod 3 abuts against the top of the arc-shaped pin 8;

[0036] The lock rod 3 includes: a spring pressure chamber 4 opened inside the main shaft body 1, and a spring pressure assembly 5 arranged inside the spring pressure chamber 4 and sleeved on the lock rod 3.

[0037] Among them, a plug 12 is slidably connected inside the sleeve set 10. The plug 12 is arranged between the locking rod 3 and the tool assembly 2. When the locking rod 3 is pressed, the bottom end of the locking rod 3 can push the plug 12 to move downward. While prompting the arc-shaped pin 8 to open, it can then contact the top end of the tool assembly 2 subsequently, pushing the tool assembly 2 away from the tool locking position to avoid the situation of tool jamming.

[0038] Among them, a gear 11 is rotatably accommodated inside the sleeve set 10. The surface of the gear 11 meshes with the inner side of the arc-shaped pin 8 and the surface of the plug 12 respectively. As Figure 3 shown, when the plug 12 moves, it can drive the gear 11 to rotate synchronously. Furthermore, by utilizing the meshing ability between the gear 11 and the arc-shaped pin 8, the locking or opening of the arc-shaped pin 8 is controlled.

[0039] Among them, a friction plate 13 is arranged on the inner side of the arc-shaped pin 8 near the bottom end. The friction plate 13 is lapped with the tool assembly 2. By arranging the friction plate 13, the bottom end of the arc-shaped pin 8 contacts the tool assembly 2 through the friction plate 13, increasing the friction force when the arc-shaped pin 8 is locked and avoiding the situation of the tool assembly 2 sliding.

[0040] Among them, a groove 9 is opened on the inner wall of the chute 7. The position of the groove 9 corresponds to the position of the friction plate 13. By opening the groove 9 to accommodate the friction plate 13, when the arc-shaped pin 8 opens, the friction plate 13 can be received into the groove 9 to avoid it affecting the unlocking of the tool assembly 2.

[0041] Among them, the structure of the bottom end of the locking rod 3 is frustum-shaped. The frustum side surface of the bottom end of the locking rod 3 is lapped with the top end of the arc-shaped pin 8. When the locking rod 3 in the released pressing state is released, the locking rod 3 will be elastically pressed upward under the influence of the elastic pressing component 5, and the slope of the frustum side surface is used to push open the top of the contracted arc-shaped pin 8, causing the arc-shaped pin 8 to start the locking movement.

[0042] Among them, the elastic pressing component 5 includes: a limit ring 52 sleeved on the locking rod 3; a disc spring 51 lapped on the side surface of the limit ring 52 and movably arranged inside the elastic pressing cavity 4. By arranging the disc spring 51 to cooperate with the limit ring 52, an upward thrust is applied to the locking rod 3, so that when there is no external force, the tool assembly 2 is always in the locked state.

[0043] Working principle: When replacing the tool assembly 2, press the locking rod 3 to push the plug 12, and utilize the moving ability of the plug 12 to control the rotation of the gear 11, so that the arc-shaped pin 8 is affected by the gear 11 and opens. When disassembling the main shaft for maintenance, any tool can be used to press the locking rod 3 to achieve the effect of automatic tool loosening;

[0044] After the replacement of the cutting tool assembly 2 is completed, when the pressing lock rod 3 is released, the lock rod 3 rebounds under the influence of the spring pressing assembly 5, and then uses the bottom end in the shape of a frustum of a cone to push the top of the arc-shaped pin 8, so that the arc-shaped pin 8 is pressed against the bottom end under the influence of the pushing force, achieving the effect of automatically locking the cutting tool assembly 2.

[0045] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An automatic tool loosening device for spindle maintenance, comprising a spindle body (1) and a locking rod (3), comprising the spindle body (1): A locking cavity (6) disposed inside the main shaft body (1); A mounting sleeve (10) installed inside the locking cavity (6); and An arc-shaped pin (8) slidably arranged in a slide groove (7) provided inside the locking cavity (6); in, The bottom of the arc-shaped pin (8) is embedded in the tool assembly (2) plugged into the bottom of the spindle body (1), and the side surface of the bottom end of the locking rod (3) overlaps the top of the arc-shaped pin (8); The locking rod (3) is characterized in that it comprises: a spring pressure chamber (4) opened inside the main shaft body (1), and a spring pressure assembly (5) arranged inside the spring pressure chamber (4) and sleeved on the locking rod (3).

2. The automatic tool loosening device for spindle maintenance according to claim 1, characterized in that: A press plug (12) is slidably connected inside the mounting sleeve (10), and the press plug (12) is arranged between the locking rod (3) and the tool assembly (2).

3. An automatic tool loosening device for spindle maintenance according to claim 1 or 2, characterized in that: A gear (11) is rotatably accommodated inside the mounting sleeve (10), and the surface of the gear (11) is respectively meshed with the inner side of the arc-shaped pin (8) and the surface of the press plug (12).

4. The automatic tool loosening device for spindle maintenance according to claim 1, characterized in that: A friction plate (13) is provided on the inner side of the arc-shaped pin (8) close to the bottom end, and the friction plate (13) overlaps the tool assembly (2).

5. The automatic tool loosening device for spindle maintenance according to claim 4, characterized in that: The inner wall of the slide groove (7) is provided with a groove (9), and the position of the groove (9) corresponds to the position of the friction plate (13).

6. The automatic tool loosening device for spindle maintenance according to claim 1, characterized in that: The structure of the bottom end of the locking rod (3) is in the shape of a truncated cone, and the side surface of the truncated cone at the bottom end of the locking rod (3) overlaps the top end of the arc-shaped pin (8).

7. The automatic tool loosening device for spindle maintenance according to claim 1, characterized in that: The spring-pressing component (5) comprises: A limiting ring (52) sleeved on the locking rod (3); A disc spring (51) overlapped on the side of the limiting ring (52) and movably arranged inside the elastic pressure cavity (4).

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