Sliding sleeve type main shaft feeding device

Abstract

The utility model discloses a sliding sleeve type spindle feeding device, which is mounted on a sliding rail of a machine tool and comprises a spindle unit, a feeding unit, a feeding unit, a feeding unit, a feeding unit and a feeding unit, wherein the spindle unit is provided with a spindle and extends in the axis direction by taking the axis of the spindle as a center; the sliding cylinder is arranged on the periphery of the main shaft in a sleeving manner, and a fixed seat is mounted at the tail end of the sliding cylinder; the main shaft driving unit is provided with a driving motor, the driving motor is installed in the fixed seat, and the output end of the driving motor is connected with a main shaft and used for supporting the main shaft and driving the main shaft to rotate; the main shaft translation unit is mounted on one side of the main shaft unit, is provided with a ball screw, is connected with the fixed seat and drives the main shaft unit to move; the linear sliding rail set is arranged on a machine tool sliding rail base and connected with the fixing base, and the end, away from the main shaft unit, of the ball screw is connected with a synchronous belt transmission component. Accurate displacement control of the main shaft is achieved, machining efficiency is improved, disassembly, assembly and maintenance are easy, and the requirements for high rotating speed and large axial load bearing of the main shaft can be met.

Description

Technical Field

[0001] The utility model belongs to the technical field of spindle boxes, and in particular relates to a sliding sleeve type spindle feeding device. Background Art

[0002] The existing machine tool spindle feeding device has the following defects in actual use: 1. The machine tool design adopts a gear box to realize the displacement of the spindle. The gear box has a high counterweight and requires lubrication, making loud noises during operation, and subsequent maintenance is troublesome and costly; 2. The gear box is arranged above the spindle, which increases the load on the spindle, resulting in the spindle running speed not being improved and low processing efficiency; 3. The outer cover of the spindle is prone to chip accumulation, and the friction between it and the spindle box is large, which affects the displacement accuracy of the spindle; 4. The internal structure of the machine tool spindle box is complex, which is not conducive to convenient disassembly by the staff, resulting in more troublesome subsequent maintenance; technical personnel in this field urgently need to solve the above technical problems. Utility Model Content

[0003] In view of the above-mentioned deficiencies in the prior art, the purpose of the present invention is to provide a sliding sleeve type spindle feeding device to achieve precise positioning and meet the needs of high-precision machining.

[0004] In order to achieve the above purpose, the utility model provides a sliding sleeve type spindle feeding device.

[0005] Installed on the machine tool slide rail, including:

[0006] a spindle unit having a spindle centered on its axis and extending in the direction of the axis;

[0007] A sliding cylinder is sleeved on the outer circumference of the main shaft, and a fixing seat is installed at the end of the sliding cylinder;

[0008] a spindle drive unit having a drive motor mounted in the fixing seat, wherein the output end of the drive motor is connected to the spindle for supporting the spindle and driving the spindle to rotate;

[0009] a spindle translation unit, mounted on one side of the spindle unit, having a ball screw connected to the fixed seat and driving the spindle unit to move;

[0010] The linear slide rail assembly is arranged on the machine tool slide rail seat and connected to the fixed seat. A synchronous belt transmission component is connected to the end of the ball screw away from the main shaft unit.

[0011] In a preferred embodiment of the present invention, a spindle cover is further included, which is sleeved on the outer periphery of the spindle unit, the spindle drive unit and the spindle translation unit.

[0012] In a preferred embodiment of the present invention, the cross-section of the sliding cylinder is circular, a through hole for the sliding cylinder is opened on the spindle cover, and a sealing sleeve is installed between the inner wall of the through hole and the outer wall of the sliding cylinder.

[0013] In a preferred embodiment of the present invention, the synchronous belt transmission component includes a driving wheel, a driven wheel, a synchronous belt and a motor driving the driving wheel. The outer circumference of the driving wheel and the outer circumference of the driven wheel are driven by a tensioned synchronous belt.

[0014] In a preferred embodiment of the present invention, the diameter ratio of the driving wheel to the driven wheel is 1:(1-3).

[0015] In a preferred embodiment of the present invention, the driving motor and the main shaft are linked via a coupling.

[0016] Beneficial effects:

[0017] The utility model discloses a sliding sleeve type spindle feeding device. The spindle and its driving unit are directly connected to improve the processing accuracy. At the same time, the two are synchronously displaced with the spindle translation unit to realize the precise displacement control of the spindle and high positioning accuracy, which meets the high-precision processing requirements of the machine tool. The independent drive design of the spindle unit and the spindle translation unit enables the rotation and displacement of the spindle to be carried out simultaneously, thereby improving the processing efficiency. The structure is simple and easy to disassemble and maintain.

[0018] The circular cross-section design of the sliding cylinder of the utility model helps to reduce the friction between the sliding cylinder and the spindle cover, and realizes smooth movement. At the same time, the circular cross-section makes it difficult for chips to accumulate on the outer periphery of the sliding cylinder.

[0019] The spindle translation unit of the utility model is installed on one side of the spindle unit, dispersing the force of the device on the machine tool, improving the processing accuracy and stability of the machine tool, and meeting the requirements of high spindle speed and bearing large axial load;

[0020] The belt drive design of the utility model can reduce the overall weight of the device. By reducing speed and increasing torque, it not only increases the output torque, but also helps to reduce the rotational speed, improve the transmission efficiency of the main shaft, run smoothly, reduce noise, and improve the overall flexibility of the machine tool. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a structural diagram of a sliding sleeve type spindle feeding device provided by the utility model installed on a machine tool;

[0022] Figure 2 A top view of a sliding sleeve type spindle feeding device provided by the utility model;

[0023] Figure 3 A schematic diagram of the structure of a sliding sleeve type spindle feeding device provided by the utility modelFigure 1 ;

[0024] Figure 4 This is a schematic structural diagram of the spindle translation unit of the present invention;

[0025] Figure 5 A schematic diagram of the structure of a sliding sleeve type spindle feeding device provided by the utility model Figure 2 .

[0026] In the figure: 1 spindle unit, 11 spindle, 12 sliding cylinder, 13 fixed seat;

[0027] 2 spindle drive unit;

[0028] 3 spindle translation unit, 31 ball screw, 32 linear guide rail assembly, 33 synchronous belt transmission components, 331 driving wheel, 332 driven wheel, 333 synchronous belt, 334 motor;

[0029] 4. Machine tool slide rail seat;

[0030] 5. Spindle cover. DETAILED DESCRIPTION

[0031] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention and are not used to limit the present invention.

[0032] like Figures 1-4 As shown, a sleeve-type spindle feeding device is installed on a machine tool slide rail, comprising:

[0033] A spindle unit 1 having a spindle 11 centered on its axis and extending in the direction of the axis;

[0034] The sliding cylinder 12 is sleeved on the outer circumference of the main shaft 11, and a fixing seat 13 is installed at the end of the sliding cylinder 12;

[0035] a spindle drive unit 2, comprising a drive motor, which is mounted in a fixed seat 13, the output end of the drive motor being connected to the spindle 11, for supporting the spindle 11 and driving its rotation;

[0036] A spindle translation unit 3 is mounted on one side of the spindle unit 1 and has a ball screw 31 connected to the fixed base 13 and drives the spindle unit 1 to move;

[0037] The linear guide rail assembly 32 is provided on the machine tool guide rail base 4 and connected to the fixed base 13. A synchronous belt transmission component 33 is connected to the end of the ball screw 31 away from the spindle unit 1;

[0038] The working principle and beneficial effects of the above embodiment are as follows:

[0039] The utility model slide sleeve type spindle feeding device, spindle 11 extends in its axial direction, is used for installing tool to carry out processing operation, sliding cylinder 12 is located in the outer periphery of spindle 11, is used for blocking the scrap and cutting fluid to enter spindle 11, the end of sliding cylinder 12 is installed on fixed base 13, is used for fixing and supporting the whole device;

[0040] Driving motor is installed in fixed base 13, is used for supporting spindle 11 and driving its rotation, to realize the processing function of spindle 11;

[0041] Spindle translation unit 3 is connected with fixed base 13, thereby driving spindle unit 1 and spindle drive unit 2 synchronous displacement, and spindle runs stably;Spindle translation unit 3 is installed on one side of spindle unit 1, disperses the force of the device to machine tool, improves the machining accuracy and stability of machine tool;

[0042] Spindle translation unit 3 includes ball screw 31 connected with fixed base 13, and drives spindle unit 1 to displace along the axial direction, realizes the accurate positioning of spindle;Linear slide rail group 32 is arranged on machine tool slide rail base 4 and is connected with fixed base 13, provides guide for ball screw 31, ensures the smooth movement of spindle unit 1;Synchronous belt transmission component 33 is connected to the end of ball screw 31 away from spindle unit 1, is used for transmitting power to ball screw 31, and the design of belt transmission can reduce the overall weight of the device, improve the flexibility of machine tool as a whole;

[0043] The utility model discloses a slide sleeve type spindle feeding device, spindle and its drive unit are directly connected, improve the processing accuracy, and the synchronous displacement of both with spindle translation unit realizes the accurate displacement control of spindle unit, the independent drive design of spindle unit and spindle translation unit makes the rotation and displacement of spindle can carry out simultaneously, improves the processing efficiency.

[0044] In one embodiment,

[0045] Still include a spindle cover 5, its sleeve is set on the outer periphery of above-mentioned spindle unit 1, spindle drive unit 2 and spindle translation unit 3;For spindle unit 1, spindle drive unit 2 and spindle translation unit 3 provide protection, prevent dust, debris and cutting fluid etc. from invading, reduce abrasion and corrosion, prolong the life of equipment;Reduce the noise generated when spindle runs, improve the working environment.

[0046] In one embodiment,

[0047] The cross-sectional shape of the above-mentioned sliding cylinder 12 is circular, a through hole of sliding cylinder 12 is formed on the spindle cover 5, and a sealing spacer is arranged between the inner wall of the through hole and the outer wall of the sliding cylinder 12;

[0048] The sliding cylinder 12 adopts a circular cross-section design, which helps to reduce friction with the spindle cover 5 and achieve smooth movement. At the same time, the circular cross-section makes it difficult for chips to accumulate on the periphery of the sliding cylinder 12; the sealing sleeve forms a seal between the sliding cylinder 12 and the penetration hole to prevent cutting fluid, waste chips, etc. from invading the interior of the spindle cover 5, thereby protecting the precision components inside.

[0049] In one embodiment, Figure 5 As shown,

[0050] The synchronous belt transmission component 33 includes a driving wheel 331, a driven wheel 332, a synchronous belt 333 and a motor 334 driving the driving wheel 331. The outer circumference of the driving wheel 331 and the outer circumference of the driven wheel 332 are driven by the tensioned synchronous belt 333.

[0051] The motor 334 drives the driving wheel 331 to rotate. The outer circumference of the driving wheel 331 contacts the tensioned timing belt 333. The timing belt 333 moves under the drive of the driving wheel 331 and transmits power to the driven wheel 332. The driven wheel 332 receives the power transmitted by the timing belt 333 and drives the ball screw 31 connected to it, thereby achieving precise displacement of the spindle unit 1.

[0052] The synchronous belt transmission component 33 provides a highly efficient transmission method. Compared with other transmission methods (such as gear transmission), the synchronous belt transmission has lower noise during operation, helps to improve the working environment, and has the advantages of convenient maintenance and low cost.

[0053] In one embodiment,

[0054] The diameter ratio of the driving wheel 331 to the driven wheel 332 is 1:(1-3); because the diameter of the driven wheel 332 is larger than that of the driving wheel 331, the deceleration and torque increase method not only improves the output torque, but also helps to reduce the speed, improve the transmission efficiency, reduce centrifugal force, reduce mechanical wear, and extend the life of the equipment.

[0055] In one embodiment,

[0056] The driving motor and the main shaft 11 are linked via a coupling, which reduces the impact of the load on the driving motor and can adapt to certain axial directions, inclinations and deviations.

[0057] In summary:

[0058] The utility model discloses a sliding sleeve type spindle feeding device. The spindle and its driving unit are directly connected to improve the processing accuracy. At the same time, the two are displaced synchronously with the spindle translation unit to realize the precise displacement control of the spindle unit and high positioning accuracy, which meets the high-precision processing requirements of the machine tool. The independent drive design of the spindle unit and the spindle translation unit allows the rotation and displacement of the spindle to be carried out simultaneously, thereby improving the processing efficiency.

[0059] The spindle translation unit is installed on one side of the spindle unit to disperse the force of the device on the machine tool, improve the machining accuracy and stability of the machine tool, and can meet the requirements of high spindle speed and large axial load;

[0060] The belt drive design can reduce the overall weight of the device. By reducing speed and increasing torque, it not only increases the output torque, but also helps to reduce the rotational speed, improve transmission efficiency, and enhance the overall flexibility of the machine tool.

[0061] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the above embodiments are merely illustrative of the technical concepts and features of the present invention, and are intended to enable those familiar with the art to understand and implement the present invention. They are not intended to limit the scope of protection of the present invention. Any equivalent changes or modifications based on the spirit and substance of the present invention are intended to fall within the scope of protection of the present invention.

Claims

1. A sleeve-type spindle feed device, mounted on a machine tool slide rail, characterized in that: include A spindle unit (1) includes a spindle (11) centered on its axis and extending in the direction of the axis; A sliding cylinder (12) is sleeved on the outer periphery of the main shaft (11), and a fixing seat (13) is installed at the end of the sliding cylinder (12); a spindle drive unit (2) having a drive motor installed in the fixing seat (13), wherein the output end of the drive motor is connected to the spindle (11) for supporting the spindle (11) and driving the spindle (11) to rotate; A spindle translation unit (3) is installed on one side of the spindle unit (1) and is provided with a ball screw (31) which is connected to the fixing seat (13) and drives the spindle unit (1) to move; A linear slide rail assembly (32) is arranged on a machine tool slide rail seat (4) and connected to the fixed seat (13); a synchronous belt transmission component (33) is connected to the end of the ball screw (31) away from the spindle unit (1).

2. The sliding sleeve type spindle feeding device according to claim 1, characterized in that: It also includes a spindle cover (5) which is sleeved on the outer periphery of the spindle unit (1), the spindle drive unit (2) and the spindle translation unit (3).

3. The sliding sleeve type spindle feeding device according to claim 2, characterized in that: The cross-section of the sliding cylinder (12) is circular. A through hole for the sliding cylinder (12) is provided on the spindle housing (5). A sealing sleeve is installed between the inner wall of the through hole and the outer wall of the sliding cylinder (12).

4. The sliding sleeve type spindle feeding device according to claim 1, characterized in that: The synchronous belt transmission component (33) includes a driving wheel (331), a driven wheel (332), a synchronous belt (333) and a motor (334) for driving the driving wheel (331). The outer peripheral surface of the driving wheel (331) and the outer peripheral surface of the driven wheel (332) are driven by the tensioned synchronous belt (333).

5. The sliding sleeve type spindle feeding device according to claim 4, characterized in that: The diameter ratio of the driving wheel (331) to the driven wheel (332) is 1:(1-3).

6. The sliding sleeve type spindle feeding device according to claim 1, characterized in that: The driving motor and the main shaft (11) are linked via a coupling.

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