Milling spindle with temperature rise compensation

Abstract

The utility model provides a milling spindle with temperature rise compensation, and relates to the technical field of milling spindles. The compensation component is mounted at the upper end of the shaft barrel through bolts and comprises a base, a middle barrel and a top seat, the base is mounted at the upper end of the shaft barrel through bolts, the middle barrel is fixed at the upper end of the base, and the top seat is mounted at the upper end of the middle barrel; the springs are annularly arranged between the third gasket and the fourth gasket, so that expansive force generated due to temperature change can be effectively released through gaps among the bearings, the springs and the gaskets in the production and use process of the main shaft, the influence on the positioning accuracy of the main shaft is reduced, and the service life of the main shaft is prolonged. The arrangement of the gasket and the spring not only provides necessary pre-tightening force, but also allows a certain degree of axial and radial displacement so as to adapt to the size change caused by temperature change, thereby being beneficial to maintaining the stability and precision of the main shaft under various working conditions, prolonging the service life of the main shaft and improving the machining efficiency and the machining quality.

Description

Technical Field

[0001] The utility model relates to the technical field of milling spindles, in particular to a milling spindle with temperature rise compensation. Background Art

[0002] In the field of precision machining, the performance of milling spindles directly affects machining efficiency and quality. With the development of industrial automation and intelligent manufacturing, higher requirements are put forward for the accuracy and stability of milling spindles. Especially during high-speed or long-term operation, the deformation caused by the thermal expansion and contraction of the motorized spindle will lead to a decrease in machining accuracy and affect the quality of the machined surface. Therefore, a milling spindle with temperature rise compensation is developed.

[0003] The existing spindle structure cannot offset the accuracy error caused by thermal expansion and contraction through the structure, and cannot meet the requirements of modern manufacturing for high-precision machining. Summary of the Utility Model

[0004] The embodiments of the present disclosure relate to a milling spindle with temperature rise compensation to solve the problem that the existing spindle structure cannot offset the accuracy error caused by thermal expansion and contraction through the structure and cannot meet the requirements of modern manufacturing for high-precision machining.

[0005] In the first aspect of the present disclosure, a milling spindle with temperature rise compensation is provided, which specifically includes: a shaft barrel;

[0006] A compensation component is installed at the upper end of the shaft barrel through bolts. The compensation component includes a base, an intermediate cylinder, and a top seat. The base is installed at the upper end of the shaft barrel through bolts. The intermediate cylinder is fixed at the upper end of the base. The top seat is installed at the upper end of the intermediate cylinder, and the top seat is connected to the base through bolts. A first bearing is installed inside the top seat. First washers are arranged at both the upper and lower ends of the first bearing. A second washer is arranged at the lower end of the top seat. A third washer and a fourth washer are installed inside the intermediate cylinder. The upper end of the third washer contacts the lower end of the second washer. Springs are annularly arranged between the third washer and the fourth washer. A rotating rod is installed inside the shaft barrel. The first bearing is sleeved on the rotating rod. A motor is installed at the upper end of the top seat through bolts. The output shaft of the motor is connected to the upper end of the rotating rod.

[0007] In at least some embodiments,

[0008] A second bearing, a third bearing, and a fourth bearing are respectively installed on the rotating rod.

[0009] In at least some embodiments,

[0010] A chassis is fixed to the lower end of the shaft cylinder. A locking cylinder is fixed to the chassis. Three sets of through slots are provided on the locking cylinder. Locking plates are hinged in all three sets of through slots. And a sliding cylinder is movable on the locking cylinder. A hinge bracket is fixed to the chassis. An articulated rod is hinged to the hinge bracket. The right end of the articulated rod is connected to the sliding cylinder.

[0011] In at least some embodiments,

[0012] A first hydraulic rod is fixed to the lower end of the chassis. A connecting seat is hinged to the piston rod of the first hydraulic rod. The connecting seat slides on the articulated rod. The rotating rod is located between the three locking plates.

[0013] In at least some embodiments,

[0014] The lower end of the rotating rod is connected to a mounting seat through a coupling. Six sets of spacer seats are provided at the lower end of the mounting seat. Two fixing blocks are fixed to the upper ends of the spacer seats. The fixing blocks are fixed to the lower end of the mounting seat.

[0015] In at least some embodiments,

[0016] A movable seat is movable between two adjacent sets of the spacer seats. A clamping block is installed on the movable seat through a bolt. A turntable is installed at the lower end of the mounting seat. Six arc-shaped grooves are provided at the lower end of the turntable. The upper ends of the six movable seats are respectively fitted and installed with the six arc-shaped grooves at the lower end of the turntable.

[0017] In at least some embodiments,

[0018] A cylinder seat is installed at the lower end of the mounting seat. A second hydraulic rod is hinged to the cylinder seat. The piston rod of the second hydraulic rod is connected to the turntable. A bottom plate is fixed to the lower end of the spacer seat.

[0019] The present utility model provides a milling spindle with temperature rise compensation, having the following beneficial effects:

[0020] A compensation component is provided at the upper end of the shaft cylinder in the present utility model. The compensation component is composed of a base, an intermediate cylinder and a top seat. A first bearing is installed inside the top seat. First washers are respectively provided at its upper and lower ends to ensure the correct positioning of the first bearing and reduce the wear caused by direct contact. A second washer is provided at the lower end of the top seat. A third washer and a fourth washer are installed inside the intermediate cylinder. The upper end of the third washer is in contact with the lower end of the second washer. Springs are arranged in a ring between the third washer and the fourth washer. So that during the production and use process of the spindle, the expansion force generated due to temperature change can be effectively released through the gaps between the bearing, the springs and the washers, thereby reducing the influence on the positioning accuracy of the spindle. The setting of the washers and the springs not only provides the necessary pre-tightening force, but also allows a certain degree of axial and radial displacement to adapt to the dimensional changes brought about by temperature changes, helps to maintain the stability and accuracy of the spindle under various working conditions, prolongs the service life of the spindle, and improves the processing efficiency and processing quality.

[0021] In addition, three sets of through slots are provided on the locking cylinder in the present utility model. Locking plates are hinged in all three sets of through slots. And a sliding cylinder is movable on the locking cylinder. By extending the first hydraulic rod, the articulated rod drives the sliding cylinder to move downward. The sliding cylinder presses down on the lower end of the locking plate. The lower end of the rotating rod can be clamped by the three locking plates, which improves the speed and efficiency of the rotation stop of the rotating rod, reduces the accidental risk, improves the reliability and safety of the equipment, and protects the safety of the equipment and the operator. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings of the embodiments will be briefly introduced below.

[0023] The drawings in the following description only relate to some embodiments of the present utility model and do not limit the present utility model.

[0024] In the drawings:

[0025] Figure 1 A schematic diagram showing the overall structure of the present application is shown;

[0026] Figure 2 A schematic diagram showing the structure of the rotating rod of the present application is shown;

[0027] Figure 3 A sectional structure schematic diagram showing the compensation component of the present application is shown;

[0028] Figure 4 A schematic diagram showing the structure of the shaft cylinder of the present application is shown;

[0029] Figure 5 A schematic diagram showing the Figure 4 enlarged structure of part A in the present application is shown;

[0030] Figure 6 A schematic diagram showing the structure of the locking plate of the present application is shown;

[0031] Figure 7 A schematic diagram showing the structure of the mounting seat of the present application is shown;

[0032] Figure 8 A schematic diagram showing the structure of the turntable of the present application is shown.

[0033] LIST OF REFERENCE NUMERALS

[0034] 1. Shaft cylinder; 11. Underframe; 12. Rotating rod; 121. Second bearing; 122. Third bearing; 123. Fourth bearing; 13. Locking cylinder; 131. Locking plate; 132. Sliding cylinder; 133. Hinge frame; 134. Articulated rod; 1341. Connection seat; 14. First hydraulic rod;

[0035] 2. Compensation component; 21. Base; 22. Intermediate cylinder; 221. No. 3 washer; 222. No. 4 washer; 223. Spring; 224. No. 2 washer; 23. Top seat; 231. No. 1 bearing; 232. No. 1 washer;

[0036] 3. Electric motor;

[0037] 4. Mounting seat; 41. Spacer seat; 411. Fixed block; 42. Turntable; 43. Cylinder seat; 431. No. 2 hydraulic rod; 44. Movable seat; 441. Clamping block; 45. Bottom plate. Specific implementation mode

[0038] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are part of the embodiments of the present utility model, rather than all of the embodiments. Based on the described 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 scope of protection of the present utility model.

[0039] Embodiment 1: Please refer to Figures 1 to 8 :

[0040] The present utility model provides a milling spindle with temperature rise compensation, including: shaft cylinder 1;

[0041] The upper end of the shaft cylinder 1 is installed with a compensation component 2 through bolts. The compensation component 2 includes a base 21, an intermediate cylinder 22 and a top seat 23. The base 21 is installed at the upper end of the shaft cylinder 1 through bolts. The intermediate cylinder 22 is fixed to the upper end of the base 21. The top seat 23 is installed at the upper end of the intermediate cylinder 22, and the top seat 23 is connected to the base 21 through bolts. A No. 1 bearing 231 is installed inside the top seat 23. No. 1 washers 232 are arranged at both the upper and lower ends of the No. 1 bearing 231. A No. 2 washer 224 is arranged at the lower end of the top seat 23. A No. 3 washer 221 and a No. 4 washer 222 are installed inside the intermediate cylinder 22. The upper end of the No. 3 washer 221 contacts the lower end of the No. 2 washer 224. Springs 223 are annularly arranged between the No. 3 washer 221 and the No. 4 washer 222. A rotating rod 12 is installed inside the shaft cylinder 1. The No. 1 bearing 231 is sleeved on the rotating rod 12. The upper end of the top seat 23 is installed with an electric motor 3 through bolts. The output shaft of the electric motor 3 is connected to the upper end of the rotating rod 12;

[0042] A No. 2 bearing 121, a No. 3 bearing 122 and a No. 4 bearing 123 are respectively installed on the rotating rod 12.

[0043] Embodiment 2, on the basis of Embodiment 1,

[0044] A chassis 11 is fixed to the lower end of the shaft cylinder 1. A locking cylinder 13 is fixed to the chassis 11. Three groups of through grooves are provided on the locking cylinder 13. Locking plates 131 are hinged in all three groups of through grooves. And a sliding cylinder 132 is movable on the locking cylinder 13. An articulated frame 133 is fixed to the chassis 11. An articulated rod 134 is hinged to the articulated frame 133. The right end of the articulated rod 134 is connected to the sliding cylinder 132. A first hydraulic rod 14 is fixed to the lower end of the chassis 11. A connecting seat 1341 is hinged to the piston rod of the first hydraulic rod 14. The connecting seat 1341 slides on the articulated rod 134. The rotating rod 12 is located between the three locking plates 131. Its function is: extending the first hydraulic rod 14 causes the articulated rod 134 to drive the sliding cylinder 132 to move downward. The sliding cylinder 132 presses down on the lower ends of the locking plates 131. The lower end of the rotating rod 12 can be clamped by the three locking plates 131, improving the stopping speed and efficiency of the rotating rod 12 and reducing the accidental risk.

[0045] Embodiment 3, based on Embodiment 1 and Embodiment 2,

[0046] The lower end of the rotating rod 12 is connected to a mounting seat 4 through a coupling. Six groups of spacer seats 41 are provided at the lower end of the mounting seat 4. Two fixing blocks 411 are fixed to the upper ends of the spacer seats 41. The fixing blocks 411 are fixed to the lower end of the mounting seat 4. A movable seat 44 is movable between two adjacent spacer seats 41. A clamping block 441 is installed on the movable seat 44 through a bolt. A turntable 42 is installed at the lower end of the mounting seat 4. Six arc-shaped grooves are provided at the lower end of the turntable 42. The upper ends of the six movable seats 44 are respectively fitted and installed with the six arc-shaped grooves at the lower end of the turntable 42. A cylinder seat 43 is installed at the lower end of the mounting seat 4. A second hydraulic rod 431 is hinged to the cylinder seat 43. The piston rod of the second hydraulic rod 431 is connected to the turntable 42. A bottom plate 45 is fixed to the lower end of the spacer seat 41. Its function is: controlling the rotation of the turntable 42 by extending and retracting the second hydraulic rod 431, realizing precise operation of the six clamping blocks 441, enabling the milling cutter or drill bit to be quickly and effectively clamped and loosened to adapt to different processing requirements.

[0047] Working principle of this embodiment: A first bearing 231 is installed inside the top seat 23, and first washers 232 are arranged at its upper and lower ends respectively to ensure the correct positioning of the first bearing 231 and reduce the wear caused by direct contact. A second washer 224 is provided at the lower end of the top seat 23, and a third washer 221 and a fourth washer 222 are installed inside the middle cylinder 22. The upper end of the third washer 221 is in contact with the lower end of the second washer 224, and springs 223 are arranged annularly between the third washer 221 and the fourth washer 222. During the production and use of the main shaft, the expansion force generated due to temperature changes can be effectively released through the gaps between the bearing, the springs 223 and the washers, thereby reducing the impact on the positioning accuracy of the main shaft. The settings of the washers and the springs 223 not only provide the necessary pre-tightening force but also allow a certain degree of axial and radial displacement to adapt to the dimensional changes caused by temperature variations, which helps to maintain the stability and accuracy of the main shaft under various working conditions, extend the service life of the main shaft, improve the processing efficiency and quality. By extending and retracting the second hydraulic rod 431 to control the rotation of the turntable 42, precise operation of the six groups of clamping blocks 441 is achieved, enabling the milling cutter or drill bit to be quickly and effectively clamped and loosened to adapt to different processing requirements. Extending the first hydraulic rod 14 causes the articulated rod 134 to drive the sliding cylinder 132 to move downward, and the sliding cylinder 132 presses down on the lower end of the locking plate 131. The lower end of the rotating rod 12 can be clamped by the three locking plates 131, which improves the speed and efficiency of the rotation stop of the rotating rod 12 and reduces the risk of accidents.

[0048] In this article, the following points need to be noted:

[0049] 1. The drawings of the embodiments of this disclosure only relate to the structures involved in the embodiments of this disclosure, and other structures can refer to the general design.

[0050] 2. Without conflict, the embodiments of this disclosure and the features in the embodiments can be combined with each other to obtain new embodiments.

[0051] The above is only the specific implementation manner of this disclosure, but the protection scope of this disclosure is not limited thereto. Any person skilled in the art within the technical scope disclosed by this disclosure can easily think of changes or substitutions, which should all be covered within the protection scope of this disclosure.

Claims

1. A milling spindle with temperature rise compensation, comprising: Shaft cylinder (1); characterized in that, A compensation component (2) is installed at the upper end of the shaft cylinder (1) through bolts. The compensation component (2) includes a base (21), an intermediate cylinder (22) and a top seat (23). The base (21) is installed at the upper end of the shaft cylinder (1) through bolts. The intermediate cylinder (22) is fixed to the upper end of the base (21). The top seat (23) is installed at the upper end of the intermediate cylinder (22), and the top seat (23) is connected to the base (21) through bolts. A first bearing (231) is installed inside the top seat (23). First washers (232) are arranged at both the upper and lower ends of the first bearing (231). A second washer (224) is arranged at the lower end of the top seat (23). A third washer (221) and a fourth washer (222) are installed inside the intermediate cylinder (22). The upper end of the third washer (221) contacts the lower end of the second washer (224). Springs (223) are annularly arranged between the third washer (221) and the fourth washer (222). A rotating rod (12) is installed inside the shaft cylinder (1). The first bearing (231) is sleeved on the rotating rod (12). A motor (3) is installed at the upper end of the top seat (23) through bolts. The output shaft of the motor (3) is connected to the upper end of the rotating rod (12).

2. A milling spindle with temperature rise compensation according to claim 1, characterized in that, Second bearings (121), third bearings (122) and fourth bearings (123) are respectively installed on the rotating rod (12).

3. A milling spindle with temperature rise compensation according to claim 1, characterized in that, A chassis (11) is fixed at the lower end of the shaft cylinder (1). A locking cylinder (13) is fixed on the chassis (11). Three groups of through slots are arranged on the locking cylinder (13). Locking plates (131) are hinged in the three groups of through slots. And a sliding cylinder (132) is movable on the locking cylinder (13). An articulated frame (133) is fixed on the chassis (11). An articulated rod (134) is hinged on the articulated frame (133). The right end of the articulated rod (134) is connected to the sliding cylinder (132).

4. A milling spindle with temperature rise compensation according to claim 3, characterized in that, A first hydraulic rod (14) is fixed at the lower end of the chassis (11). A connecting seat (1341) is hinged on the piston rod of the first hydraulic rod (14). The connecting seat (1341) slides on the articulated rod (134). The rotating rod (12) is located between the three groups of locking plates (131).

5. A milling spindle with temperature rise compensation according to claim 4, characterized in that, The lower end of the rotating rod (12) is connected to a mounting seat (4) through a coupling. Six spacer seats (41) are arranged at the lower end of the mounting seat (4). Two fixing blocks (411) are fixed at the upper ends of the spacer seats (41). The fixing blocks (411) are fixed at the lower end of the mounting seat (4).

6. A milling spindle with temperature rise compensation according to claim 5, characterized in that, A movable seat (44) is arranged between two adjacent sets of the spacer seats (41). A clamping block (441) is mounted on the movable seat (44) by bolts. A turntable (42) is mounted at the lower end of the mounting seat (4). Six arc-shaped grooves are arranged at the lower end of the turntable (42). The upper ends of the six movable seats (44) are respectively fitted and mounted with the six arc-shaped grooves at the lower end of the turntable (42).

7. A milling spindle with temperature rise compensation according to claim 6, wherein A cylinder seat (43) is mounted at the lower end of the mounting seat (4). A second hydraulic rod (431) is hinged on the cylinder seat (43). The piston rod of the second hydraulic rod (431) is connected to the turntable (42). A bottom plate (45) is fixed to the lower end of the spacer seat (41).

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