Feed screw nut pair assembling device
A technology of a screw nut pair and an assembly device is applied in the field of mechanical parts assembly, which can solve the problems of inability to place a dial indicator, affecting the installation accuracy, and high assembly accuracy, and achieves the effects of reducing the number, convenient operation, and improving accuracy.
Active Publication Date: 2012-01-04
HANS CNC SCI & TECH
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Problems solved by technology
Its disadvantages: Errors such as ellipticity, taper and concentricity of the outer circle of the screw will affect the installation accuracy.
[0005] The common disadvantages of the two methods are: because a dial indicator is used for measurement, some small machine tools and machine tools with narrow nut installation positions cannot place a dial indicator, and the machine tools that cannot observe the measurement results of the dial indicator at the nut installation position cannot use the above methods. method
The machine tool with a narrow nut installation position cannot place a dial indicator, and cannot achieve relatively high assembly accuracy
Method used
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[0017] Further details will be given below in conjunction with the preferred embodiments shown in the accompanying drawings.
[0018] Such as figure 2 Shown is a preferred embodiment of the screw nut pair that can be assembled accurately in the present invention, which includes a screw mandrel 1, a screw nut 2, a nut seat 3, a support seat 4, a workbench 5, and a bed 7. The screw mandrel 1 is installed on the nut seat 3 and the support seat 4, the support seat 4 is installed on the bed 7, the nut seat 3 is provided with an unlocked screw 8, and the screw nut 2 is installed on the nut seat 3 Above, the worktable 5 is placed in the middle of the screw rod 1 stroke. The outer circle of the screw nut 2 is provided with a spacer 6 to lock the nut flange.
[0019] Such as image 3 and Figure 4 As shown, the spacer 6 is a polyhedral spacer, and before the spacer 6 is placed on the outer circle of the screw nut 2, the spacer 6 is first arranged on the screw 1 near the support en...
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The invention relates to a feed screw nut pair assembling device. The device comprises a feed screw, a feed screw nut, a nut seat, a motor and a workbench, wherein the feed screw and the nut seat are installed on the motor, the feed screw is installed on the nut seat and a support seat, the workbench is arranged in the middle position of the travel of the feed screw, the outer circle of the feed screw nut is provided with a cushion block, and the cushion block is in a polyhedral structure. By arranging the cushion block at the outer circle of the feed screw nut and making the cushion block into a polyhedron, the polyhedron can be made into different tolerance groups, thereby reducing the number of tools. Meanwhile, since the polyhedron is made into different tolerance sizes, the operation is convenient, the cost is saved, the assembling accuracy is improved, and coaxiality of the center of the feed screw nut and the center of the feed screw support hole can be realized. Therefore, the device does not need to use high-precision measuring devices such as a dial indicator, a checking mandrel and the like, and can work in a narrow space where the dial indicator can not be used.
Description
technical field [0001] The invention relates to the field of assembly of mechanical parts, in particular to a device for assembly of screw nut pairs. Background technique [0002] In the existing tooling technology, the most important item in the assembly of the screw nut pair is to ensure the coaxiality (concentricity) between the center of the nut and the center of the screw support hole 11. The traditional installation methods are basically Two kinds: [0003] Method 1: Match the screw support hole 11 and the nut installation hole as a precision inspection mandrel 12, and use a dial indicator to detect and adjust the concentricity. Its disadvantage is that the concentricity of the two support holes 11 and the nut mounting holes is first adjusted using the mandrel 12. After the adjustment is completed, the mandrel 12 needs to be removed and the screw bearing assembled, resulting in a secondary assembly error, such as figure 1 shown. [0004] Method 2: Use the outer circ...
Claims
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IPC IPC(8): B23P19/04
Inventor 高云峰王志刚郑宝安杨立伟
Owner HANS CNC SCI & TECH