Machining spindle for five-axis machining center

Abstract

The utility model discloses a machining main shaft for a five-axis machining center, which comprises a shaft body, a shaft head is arranged at the bottom of the shaft body, a threaded connector is arranged at the bottom of the shaft head, a connector is arranged at the top of the shaft body and is connected with the five-axis machining center, the outer wall of the shaft body is communicated with a connecting sleeve, and the connecting sleeve is connected with the five-axis machining center. The outer wall of the shaft body is fixedly sleeved with an annular water tank, one side of the annular water tank communicates with a water inlet, the annular water tank is arranged over the connecting sleeve, a water cooling circulation structure is arranged in the shaft body, and the water cooling circulation structure is matched with the annular water tank so that the shaft body can be subjected to water cooling. And fixing pieces which are distributed in a circular array are mounted at the top of the connecting sleeve. The liquid cooling spindle solves the problems that a traditional liquid cooling spindle is low in cooling efficiency and cannot meet the requirement for high-precision temperature control, the tool fixing mode is simple, the tool is prone to loosening and falling off during high-speed heavy load, and machining is affected.

Description

TECHNICAL FIELD

[0001] The utility model mainly relates to the technical field of machining spindle for machining center, concretely to a machining spindle for five-axis machining center. BACKGROUND

[0002] In modern high-precision five-axis machining center, machining spindle as core component, its performance directly influences machining precision, efficiency and the overall life of equipment. With the continuous improvement of machining requirement, the heat problem produced by spindle under high load and high speed operation is increasingly prominent, becomes the key factor restricting machining quality and equipment performance, and traditional cooling mode, such as air cooling or simple liquid cooling system, and in traditional liquid cooling spindle design, cooling liquid is only simply flowed through spindle surface or internal passage, cannot fully absorb and take away the heat generated by spindle and cannot repeatedly circulate, leads to low cooling efficiency, cannot satisfy the demand of high-precision machining to temperature control, and traditional spindle tool fixing mode often adopts simple clamping or threaded connection, is difficult to satisfy the requirement of high-precision machining to tool stability and reliability, especially when high speed rotating and heavy cutting, tool is easy to cause machining failure due to loosening or falling off. SUMMARY

[0003] The utility model technical scheme provides the solution that is significantly different from prior art for the technical problem that prior art solution is too single, mainly provides a machining spindle for five-axis machining center to solve the technical problem proposed in the above background art.

[0004] The utility model discloses a technical scheme that is adopted to solve the above technical problem: a machining spindle for five-axis machining center, including the axle body, the bottom of axle body is provided with the axle head, the bottom of axle head is provided with the threaded interface, the top of axle body is installed with the connecting head, the connecting head is connected with five-axis machining center, the outer wall of axle body is connected with the adapter sleeve, the outer wall of axle body is fixed with annular water tank, one side of annular water tank is connected with the water inlet, annular water tank is placed in the just above adapter sleeve, the water cooling circulation structure is arranged in the axle body, and the water cooling circulation structure is matched with annular water tank to make the axle body water cooling.

[0005] Preferably, the top of the adapter sleeve is installed with a circular array of fixing pieces, and the top of the fixing piece is connected with the bottom outer wall of the annular water tank.

[0006] Preferably, the bottom of the annular water tank is connected with a symmetrically distributed circulation pipe, and the end of the circulation pipe penetrates the outer wall of the adapter sleeve and is placed in the axle body.

[0007] Preferably, the inner wall of the shaft body is provided with water cooling grooves in curve distribution, the water inlet of the water cooling grooves is communicated with one of the circulating pipes, and the water outlet of the water cooling grooves is communicated with the other circulating pipe.

[0008] Preferably, the annular water tank is provided with a micro liquid pump, the input end of the micro liquid pump is communicated with the circulating pipe connected with the water outlet, and the output end of the micro liquid pump is arranged in the annular water tank.

[0009] Preferably, the shaft head is provided with a fixed shaft column, the shaft center of the fixed shaft column is provided with a bearing, the bearing is connected with the inner wall of the shaft head, the outer wall of the fixed shaft column is provided with movable grooves in annular distribution, and the front sliding block is slidably arranged on the movable grooves.

[0010] Preferably, the bottom of the shaft head is movably clamped with a cutter, the outer wall of the cutter is provided with a clamping groove, the top of the cutter is rotationally engaged with the threaded interface, one end of the front sliding block is provided with a clamping block, and the clamping block is clamped and matched with the clamping groove.

[0011] Compared with the prior art, the utility model has the advantages that through the arrangement of the annular water tank and the water cooling circulation system, the circulation of the cooling liquid in the shaft body is realized, the cooling efficiency of the main shaft is effectively improved, the temperature of the main shaft in the working process is reduced, the service life of the main shaft is prolonged, the water cooling groove is arranged in the curve shape, the contact area of the cooling liquid and the main shaft wall is increased, the cooling liquid can more uniformly absorb and take away the heat generated by the main shaft, the local overheating phenomenon is avoided, and simultaneously, because the cooling liquid is recycled, the frequency of replacing the cooling liquid is reduced, the maintenance cost is reduced, through the arrangement of the front sliding block and the clamping block, the quick and stable fixation of the cutter is realized, different sizes and types of cutters can be adapted, the flexibility and compatibility of the machining are improved, in addition, the arrangement of the bearing allows the cutter to rotate freely after being fixed, and the smooth machining is ensured.

[0012] The utility model will be explained in detail in combination with the specific embodiment and the drawings. DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is the three-dimensional schematic view of the utility model;

[0014] Figure 2 It is another preferable angle schematic view of the whole structure of the utility model;

[0015] Figure 3 It is the whole internal water cooling circulation structure schematic view of the utility model;

[0016] Figure 4 It is the structure enlarged schematic view of A of Figure 2 ; and

[0017] Figure 5 It is fixed structure and partial structure amplification schematic view of the utility model.

[0018] Marked in the figure: 1-shaft body, 101-connector, 2-shaft head, 3-adapter sleeve, 4-annular water tank, 401-fixing piece, 402-circulation pipe, 5-water inlet, 6-threaded interface, 7-water cooling tank, 8-fixed shaft column, 9-moving groove, 10-advance sliding block, 11-bearing, 12-clamping block, 13-cutter, 14-clamping groove. DETAILED DESCRIPTION

[0019] In order to facilitate understanding of the utility model, the utility model will be described more comprehensively below with reference to the relevant drawings, the drawings show several embodiments of the utility model, but the utility model can be realized by different forms, and is not limited to the embodiments described in the text, on the contrary, these embodiments are provided to make the disclosed content of the utility model more thorough and comprehensive.

[0020] It should be noted that when an element is referred to as "fixed to" another element, it can be directly on the other element or there can be intervening elements, and when an element is referred to as "connected to" another element, it can be directly connected to the other element or there can be intervening elements, the terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0021] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the utility model belongs, the terminology used in the specification of the utility model herein is for the purpose of describing specific embodiments, and is not intended to limit the utility model, the term "and / or" used herein includes any and all combinations of one or more of the associated listed items.

[0022] Please refer to Figures 1-5 A machining spindle for five-axis machining center, including shaft body 1, the bottom of shaft body 1 is provided with shaft head 2, the bottom of shaft head 2 is provided with threaded interface 6, the top of shaft body 1 is provided with connector 101, connector 101 is connected with five-axis machining center, the outer wall of shaft body 1 is communicated with adapter sleeve 3, the outer wall of shaft body 1 is fixedly provided with annular water tank 4, annular water tank 4 is used for storing coolant, one side of annular water tank 4 is communicated with water inlet 5 for feeding coolant, annular water tank 4 is located directly above adapter sleeve 3, water cooling circulation structure is arranged in shaft body 1, water cooling circulation structure is matched with annular water tank 4 to cool shaft body 1.

[0023] Please refer to Figure 1 、 Figure 2 And Figure 4The top of the adapter sleeve 3 is provided with a circular array of fixing members 401, the top of the fixing members 401 is connected to the bottom outer wall of the annular water tank 4.

[0024] Please refer to Figure 4 The bottom of the annular water tank 4 is connected to a pair of symmetrical circulation pipes 402, the ends of the circulation pipes 402 penetrate the outer wall of the adapter sleeve 3 and are placed in the shaft body 1.

[0025] Please refer to Figure 3 The inner wall of the shaft body 1 is provided with a curved water cooling groove 7, the water inlet of the water cooling groove 7 is connected to one of the circulation pipes 402, and the water outlet of the water cooling groove 7 is connected to the other circulation pipe 402. The water cooling groove 7 increases the contact area between the cooling liquid and the inner wall of the shaft body 1, so that the cooling liquid can more effectively absorb and remove the heat generated during the operation of the main shaft. The water inlet and the water outlet of the water cooling groove 7 are connected to the circulation pipes 402, forming a complete cooling liquid circulation path.

[0026] A micro liquid pump is arranged in the annular water tank 4, the input end of the micro liquid pump is connected to the circulation pipe 402 connected to the water outlet of the water cooling groove 7, and the output end of the micro liquid pump is arranged in the annular water tank 4. The micro liquid pump is responsible for pumping the cooling liquid out of the water outlet of the water cooling groove 7 and re-injecting it into the annular water tank 4, thereby realizing the recycling of the cooling liquid.

[0027] Please refer to Figure 5 A fixed shaft column 8 is arranged in the shaft head 2, a bearing 11 is arranged at the center of the fixed shaft column 8, and the bearing 11 is connected to the inner wall of the shaft head 2. The bearing 11 allows the tool 13 to rotate freely after being fixed. The outer wall of the fixed shaft column 8 is provided with a plurality of annularly distributed movable grooves 9, and a plurality of forward sliding blocks 10 are slidably arranged in the movable grooves 9.

[0028] The bottom of the shaft head 2 movably clamps the tool 13, the outer wall of the tool 13 is provided with a clamping groove 14, the top of the tool 13 is rotatably engaged with the threaded interface 6, one end of the forward sliding block 10 is provided with a clamping block 12, and the clamping block 12 is clamped and matched with the clamping groove 14. When the tool 13 is rotated and clamped through the threaded interface 6, the fixed shaft column 8 is rotated through the arrangement of the bearing 11. After rotation, the forward sliding block 10 slides inward in the movable groove 9, and then the clamping block 12 on the forward sliding block 10 is clamped into the clamping groove 14 on the outer wall of the tool 13, thereby realizing the rapid and stable fixation of the tool 13.

[0029] The specific operation process of the utility model is as follows: the shaft body 1 is connected with the five-axis machining center through the connecting head 101, the cooling liquid is added into the annular water tank 4 through the water inlet 5, the top of the cutter 13 is aligned with the threaded interface 6 at the bottom of the shaft head 2, and the cutter 13 is rotated to be engaged with the threaded interface 6, when the cutter 13 is rotated and clamped into the threaded interface 6, the cutter 13 is continuously rotated, since the fixed shaft column 8 is connected with the shaft head 2, and the bearing 11 is arranged at the shaft center of the fixed shaft column 8, the rotation of the cutter 13 drives the fixed shaft column 8 to rotate, along with the rotation of the fixed shaft column 8, the forward sliding block 10 on the movable groove 9 slides inward along the movable groove 9, while the forward sliding block 10 slides, the clamping block 12 at the end portion thereof gradually approaches and clamps into the clamping groove 14 on the outer wall of the cutter 13, so that the cutter 13 is quickly and stably fixed, when the shaft body 1 needs to be cooled, the cooling liquid enters the water cooling groove 7 in the shaft body 1 from the annular water tank 4 through one of the circulating pipes 402, the cooling liquid flows in the water cooling groove 7 along the curve, the contact area with the inner wall of the shaft body 1 is increased, the heat generated during the operation of the main shaft is more effectively absorbed and removed, the micro liquid pump is opened to start working, the micro liquid pump will pump the cooling liquid out of the water outlet, and the cooling liquid is re-injected into the annular water tank 4 through the circulating pipe 402, forming a cooling liquid circulation, during the machining process, the cooling liquid continuously circulates to provide effective cooling for the shaft body 1, ensuring the machining precision and the service life of the main shaft.

[0030] The utility model is described above in conjunction with the drawings, obviously, the utility model is not limited by the above mode in the specific implementation, as long as the method concept and technical scheme of the utility model are adopted for this kind of non-essential improvement, or the concept and technical scheme of the utility model are directly applied to other occasions without improvement, all are within the protection scope of the utility model.

Claims

1. A machining spindle for a five-axis machining center, characterized in that: The shaft (1) includes a shaft body (1), a shaft head (2) is provided at the bottom of the shaft body (1), a threaded interface (6) is provided at the bottom of the shaft head (2), a connector (101) is installed at the top of the shaft body (1), the connector (101) is connected to a five-axis machining center, a connecting sleeve (3) is connected to the outer wall of the shaft body (1), an annular water tank (4) is fixedly fitted on the outer wall of the shaft body (1), a water inlet (5) is connected to one side of the annular water tank (4), the annular water tank (4) is placed directly above the connecting sleeve (3), a water cooling circulation structure is provided inside the shaft body (1), the water cooling circulation structure cooperates with the annular water tank (4) to cool the shaft body (1) by water cooling.

2. The machining spindle for a five-axis machining center according to claim 1, characterized in that: The top of the connecting sleeve (3) is equipped with fasteners (401) arranged in a circular array, and the top of the fasteners (401) is connected to the bottom outer wall of the annular water tank (4).

3. A machining spindle for a five-axis machining center according to claim 2, characterized in that: The bottom of the annular water tank (4) is connected to a symmetrically distributed circulation pipe (402), the end of which penetrates the outer wall of the connecting sleeve (3) and is placed inside the shaft (1).

4. A machining spindle for a five-axis machining center according to claim 3, characterized in that: The inner wall of the shaft (1) is provided with a water-cooled groove (7) that is distributed in a curve. The water inlet of the water-cooled groove (7) is connected to one of the circulation pipes (402), and its water outlet is connected to the other circulation pipe (402).

5. A machining spindle for a five-axis machining center according to claim 3, characterized in that: A micro pump is installed inside the annular water tank (4). The input end of the micro pump is connected to the circulation pipe (402) connected to the outlet of the water tank, and the output end of the micro pump is placed inside the annular water tank (4).

6. A machining spindle for a five-axis machining center according to claim 1, characterized in that: A fixed shaft column (8) is provided inside the shaft head (2). A bearing (11) is provided at the center of the fixed shaft column (8). The bearing (11) is connected to the inner wall of the shaft head (2). An annularly distributed movable groove (9) is provided on the outer wall of the fixed shaft column (8). A forward slider (10) is slidably provided on the movable groove (9).

7. A machining spindle for a five-axis machining center according to claim 6, characterized in that: The bottom of the shaft head (2) is movably engaged with a cutting tool (13). The outer wall of the cutting tool (13) is provided with a slot (14). The top of the cutting tool (13) is rotatably engaged with the threaded interface (6). One end of the forward slider (10) is equipped with a locking block (12). The locking block (12) is engaged and adapted with the slot (14).

Images