A pulley installation device capable of ensuring installation accuracy

Abstract

The present invention discloses a pulley mounting device capable of ensuring the mounting accuracy, which includes a support plate (1). Both ends of the support plate (1) are respectively connected with connecting rods (2). A tightening nut assembly (3) is threadedly connected to the connecting rods (2), and the tightening nut assembly (3) is located above the support plate (1). A pulling leg (4) is provided at the bottom end of the connecting rod (2), and a limiting step (5) is provided at the bottom of the pulling leg (4). An adjusting screw (6) is threadedly connected to the centroid of the support plate (1). A handle (7) is provided at the top end of the adjusting screw (6), and a limiting end (8) is provided at the bottom end of the adjusting screw (6). The limiting end (8) passes through a through hole opened on the top plate of the pressing block (9) and is located in the inner cavity of the pressing block (9). A pressing cover (10) is also movably connected in the inner cavity of the pressing block (9), and a plain bearing (11) is provided between the pressing cover (10) and the pressing block (9).

Description

Technical Field

[0001] The present invention relates to the field of assembly of transmission mechanisms, and particularly to a pulley mounting device capable of ensuring mounting accuracy. Background Art

[0002] Most of the spindle motors of machine tools use pulley transmission pairs to achieve torque transmission. During the operation of the machine tool, the pulley will be in a state of high-speed rotation. If the mounting accuracy of the pulley does not meet the requirements, on the one hand, the transmission accuracy may not be guaranteed, and on the other hand, it will generate noise during high-speed rotation, affecting the surrounding environment. Since the pulley and the output shaft of the motor are connected and fixed through an expansion sleeve, during the traditional installation of the expansion sleeve, the pulley may deviate from its theoretical position, resulting in installation errors and unable to meet the mounting accuracy requirements. Thus, the above problems occur.

[0003] Therefore, there is a need for a method or device that can solve the above problems now. Summary of the Invention

[0004] The present invention is to solve the above technical problems and proposes a device with a simple structure, ingenious design, reasonable layout, which can quickly and conveniently install the pulley and ensure the mounting accuracy at the same time.

[0005] The technical solution of the present invention is: a pulley mounting device capable of ensuring mounting accuracy, characterized in that: the device includes a support plate 1, both ends of the support plate 1 are respectively connected with connecting rods 2, a tightening nut assembly 3 is threadedly connected to the connecting rods 2, and the tightening nut assembly 3 is located above the support plate 1. The bottom end of the connecting rod 2 is provided with a pulling leg 4, and a limiting step 5 is provided at the bottom of the pulling leg 4.

[0006] A regulating screw 6 is threadedly connected to the centroid of the support plate 1. A handle 7 is provided at the top end of the regulating screw 6, and a limiting end 8 is provided at the bottom end of the regulating screw 6. The limiting end 8 passes through a through hole opened on the top plate of the pressing block 9 and is located in the inner cavity of the pressing block 9. A pressing cover 10 is also movably connected in the inner cavity of the pressing block 9. A plain bearing 11 is provided between the pressing cover 10 and the pressing block 9.

[0007] The device also includes a positioning plate 12. A long slot is opened on the positioning plate 12. A set of arc-shaped rolling assemblies composed of a plurality of balls 13 are provided on the top end surface of the positioning plate 12, and the arc lengths between adjacent balls 13 are equal. The positioning plate 12 is located between the front flange 14 of the motor and the pulley 15.

[0008] The pressing block 9 is located above the pulley 15.

[0009] A dial indicator holder is connected to the support plate 1, and a dial indicator is supported on the dial indicator holder.

[0010] An operation hole 16 is formed in the top end surface of the briquette 9.

[0011] Compared with the prior art, the present invention has the following advantages:

[0012] The pulley mounting device with this structural form can ensure the mounting accuracy. It has a simple structure, ingenious design and reasonable layout. Aiming at the problem that the traditional pulley mounting process is prone to cause mounting errors, resulting in transmission accuracy errors and noise, a special structure is designed. It can forcibly ensure the mounting position accuracy of the pulley during the pulley mounting process and prevent its displacement during the process of compressing the expansion sleeve. At the same time, a dial indicator holder can be magnetically connected to the support plate of this device, and the dial indicator holder can drive the dial indicator to be placed on the top end surface or side surface of the pulley, so that the mounting accuracy of the pulley can be directly detected after installation to ensure the final mounting accuracy. This device can avoid problems such as noise in subsequent work by ensuring the pulley mounting accuracy. At the same time, its manufacturing process is simple and the manufacturing cost is low. Therefore, it can be said that it has multiple advantages and is especially suitable for popularization and application in this field, and its market prospect is very broad. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is a top view of an embodiment of the present invention.

[0014] Figure 2 is Figure 1 the sectional view taken along line A-A in

[0015] Figure 3 is a top view of the positioning plate part in an embodiment of the present invention.

[0016] Figure 4 is Figure 2 the enlarged partial view in DETAILED DESCRIPTION OF THE INVENTION

[0017] The following will describe the specific embodiments of the present invention in conjunction with the drawings. As Figures 1 to 4 shown: A pulley mounting device capable of ensuring the mounting accuracy, the device includes a support plate 1, connecting rods 2 are respectively connected to both ends of the support plate 1, a tightening nut assembly 3 is threadedly connected to the connecting rods 2, and the tightening nut assembly 3 is located above the support plate 1. A pulling leg 4 is provided at the bottom end of the connecting rod 2, and a limiting step 5 is provided at the bottom of the pulling leg 4.

[0018] The centroid of the support plate 1 is threadedly connected with an adjusting screw rod 6. A handle 7 is arranged at the top end of the adjusting screw rod 6, and a limit end 8 is arranged at the bottom end of the adjusting screw rod 6. The limit end 8 passes through a through hole opened on the top plate of the pressing block 9 and is located in the inner cavity of the pressing block 9. A pressing cover 10 is also movably connected in the inner cavity of the pressing block 9. A plain bearing 11 is arranged between the pressing cover 10 and the pressing block 9.

[0019] The device further includes a positioning plate 12. A long groove is opened on the positioning plate 12. A set of arc-shaped rolling assemblies composed of a plurality of balls 13 are arranged on the top end surface of the positioning plate 12, and the arc lengths between adjacent balls 13 are equal. The positioning plate 12 is located between the front flange 14 of the motor and the pulley 15.

[0020] The pressing block 9 is located above the pulley 15. A dial gauge stand is connected to the support plate 1, and a dial indicator is supported on the dial gauge stand. An operation hole 16 is opened on the top end surface of the pressing block 9.

[0021] The working process of the pulley installation device capable of ensuring the installation accuracy according to the embodiment of the utility model is as follows: When the pulley 15 needs to be installed on the rotating shaft of the motor, first install the positioning plate 12 on the front flange 14 of the motor. At this time, the output shaft of the motor is located in the long slot opened on the positioning plate 12. After the installation is in place, the bottom end surface of the positioning plate 12 contacts the front flange 14. Then place the pulley 15 on the output shaft of the motor (at this time, there is an expansion sleeve 17 between the pulley 15 and the output shaft of the motor). After the preparation work is completed, place this device on the side of the motor and the pulley 15, and drive this device to move horizontally until the limit step 5 at the bottom of the pulling leg 4 moves to the bottom edge of the front flange 14. Then drive the adjusting screw 6 to rotate through the handle 7. The limit end 8 at the bottom end of the adjusting screw 6 moves downward and presses on the top end surface of the gland 10. When the adjusting screw 6 is tightened, the limit end 8 and the pulling leg 4 will clamp the pulley 15 and the expansion sleeve 17 from the upper and lower directions respectively. Operate through the operation hole 16 on the top end surface of the pressing block 9, and tighten the bolts on the pulley 15 to realize the connection of the pulley 15 on the output shaft of the motor. After the connection operation is completed, operate the dial indicator stand to make the probe part of the dial indicator contact the top end surface of the pulley 15. Then manually drive the pulley 15 to rotate and observe the reading of the dial indicator during this process to judge whether the installation accuracy of the pulley 15 meets the requirements; if it meets the requirements, after stopping the machine, operate the dial indicator stand again to make the probe part of the dial indicator contact the side surface of the pulley 15. Manually drive the pulley 15 to rotate again and also observe the reading of the dial indicator during this process to further judge whether the installation accuracy of the pulley 15 meets the requirements; if it meets the requirements, rotate the adjusting screw 6 in the reverse direction, remove this device from the motor, and then install the next set of motor and pulley 15. If it does not meet the requirements, adjust the tightness of the bolts on the pulley 15 to adjust the attitude of the pulley 15, and then repeat the above operations until the position accuracy of the pulley 15 meets the requirements.

Claims

1. A pulley mounting device capable of ensuring installation accuracy, characterized in that: the device includes a support plate (1), both ends of the support plate (1) are respectively connected with a connecting rod (2), a tightening nut assembly (3) is threadedly connected to the connecting rod (2), and the tightening nut assembly (3) is located above the support plate (1), the bottom end of the connecting rod (2) is provided with a pulling leg (4), and a limiting step (5) is provided at the bottom of the pulling leg (4), a regulating screw (6) is threadedly connected to the centroid of the support plate (1), a handle (7) is provided at the top end of the regulating screw (6), a limiting end (8) is provided at the bottom end of the regulating screw (6), the limiting end (8) passes through a through hole opened on the top plate of the pressing block (9) and is located in the inner cavity of the pressing block (9), and a pressing cover (10) is also movably connected in the inner cavity of the pressing block (9), and a plain bearing (11) is provided between the pressing cover (10) and the pressing block (9), the device further includes a positioning plate (12), a long groove is opened on the positioning plate (12), a set of arc-shaped rolling assemblies composed of a plurality of balls (13) are provided on the top end surface of the positioning plate (12), and the arc length between adjacent balls (13) is equal, and the positioning plate (12) is located between the front flange (14) of the motor and the pulley (15), the pressing block (9) is located above the pulley (15), a dial indicator stand is connected to the support plate (1), and a dial indicator is supported on the dial indicator stand, an operation hole (16) is opened on the top end surface of the pressing block (9).

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