Rigid out-covered clamping device of vertical fine boring machine

A fine boring machine and rigid technology, applied in the field of rigid outsourcing clamping devices, can solve the problems of frequent replacement and adjustment, low fixture accuracy, low qualification rate, etc., and achieve the effect of ensuring shape and position tolerance, improving quality and saving costs.

Active Publication Date: 2010-11-24
ANHUI WHITE RABBIT POWER
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AI-Extracted Technical Summary

Problems solved by technology

Using a simple upper and lower gland type fixture, using its up and down pressing principle for fixture production, its disadvantages are that t...
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Method used

The present invention is the clamping of small-sized pneumatic clamping cylinder of rigid clamping outsourcing clamp band, can satisfy two conditions like this: 1, upper pressure ring compresses and is stressed evenly, 2, cylinder outer diameter is by rigid cover (i.e. The upper positioning ring and the lower positioning ring) are clamped by outsourcing. The rigid outsourcing clamp comes from four forces. The outer circle of the cylinder liner is divided into the upper and lower sections to bear the pressure, and the rigid clamp with a small fit gap bears the pressure. The lower end of the workpiece support shoulder is directly placed on the upper end of the clamp for positioning and pressed tightly. The force is pneumatically compressed by three uniformly distributed cylinders, which play a role of fixed compression. In this way, the two forces can b...
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Abstract

The invention discloses a rigid out-covered clamping device of a vertical fine boring machine, comprising a clamping canister provided with a connection seat, wherein the middle-lower part of the outer wall of the clamping canister is provided with a fixed ring; the fixed ring is matched with the inner wall of a sleeve through an O-shaped seal ring, wherein the length of the sleeve is less than that of the clamping canister, an upper flange plate and a lower flange plate are fixed on the sleeve; an upper vent hole and a lower vent hole are arranged on the sleeve, the inner end faces of the upper flange plate and the lower flange plate are both matched with the outer wall of the clamping canister through the O-shaped seal ring; an upper locating ring and a lower locating ring are arranged on the inner wall of the clamping canister; a pressing ring for fixing the upper end surface of a workpiece is fixed on the upper locating ring; a support ring is fixed on the outer wall of the clamping canister close to the top end; three brackets are evenly arranged on the support ring and are all movably connected with a pressing plate through a shaft; one end of the pressing plate corresponds to the upper end surface of the pressing ring, and the other end corresponds to a jack-prop fixed on the flange plate on the sleeve. The clamping device solves the precision problems of large conicity, poor depth of parallelism, horn mouth occurrence at two calibers and the like during boring, which are caused by that the length of the inner hole of a large-size workpiece is longer, thereby improving the replaceability and installation precision of the clamp and the quality of products.

Application Domain

ChucksBoring/drilling machines

Technology Topic

Bell mouthEngineering +3

Image

  • Rigid out-covered clamping device of vertical fine boring machine
  • Rigid out-covered clamping device of vertical fine boring machine
  • Rigid out-covered clamping device of vertical fine boring machine

Examples

  • Experimental program(1)

Example Embodiment

[0010] by figure 1 , figure 2 with image 3 It can be seen that the rigid outsourcing clamping device of the vertical fine boring machine of the present invention includes a clamp cylinder 1. The connecting seat and the clamp cylinder 1 are an integral structure, and the connecting seat is provided with a connecting hole for connecting with the boring machine. A fixing ring 2 is provided at the middle and lower part of the outer wall of the clamp cylinder 1, and the fixing ring 2 is matched with the inner wall of the sleeve 6 fixed with the upper flange 4 and the lower flange 5 through the O-ring 3, and the length of the sleeve 6 is smaller than the clamp cylinder 1, the sleeve 6 is provided with an upper vent 7 and a lower vent 8, the inner end surfaces of the upper flange 7 and the lower flange 8 are matched with the outer wall of the clamp cylinder 1 through an O-ring 9. The clamp The inner wall of the cylinder 1 is provided with an upper locating ring 10 and a lower locating ring 11. The upper locating ring 10 is provided with a pressing ring 12 for fixing the upper end surface of the workpiece. A support ring 13 is fixed on the outer wall of the clamp cylinder 1 near the top end. The support ring 13 is evenly provided with three Each bracket 14 is movably connected to the pressing plate 16 through a shaft 15. One end of the pressing plate 16 corresponds to the upper end surface of the pressing ring 12, and the other end of the pressing plate 16 is fixed on the flange 4 of the sleeve 6. The top pillar 17 corresponds.
[0011] The workpiece 18 is installed in the upper locating ring 10 and the lower locating ring 11, the upper end surface of the workpiece 18 is placed with a pressing ring 12, the upper locating ring 10 and the lower locating ring 11 can be replaced with different sizes according to the workpiece 18 of different shapes and numbers. The upper locating ring 10 and the lower locating ring 11 are left with a finishing allowance during processing, so that after the installation is completed, the spindle of the vertical fine boring machine is used to boring the inner hole and scraping the upper end surface. The fixture cylinder 1 and the entire base are integrated manufacturing The overall rigidity of the fixture can be guaranteed.
[0012] The matching of the sleeve 6 with the clamp cylinder 1 and the fixed ring 2 is similar to a cylinder structure. The sleeve 6 is equivalent to a cylinder liner, the fixed ring 2 is equivalent to a piston, and the clamp cylinder 1 is equivalent to a piston rod. Compressed air is fed from the upper air hole 7 to move the sleeve 6 upward, and the three top posts 17 make the three pressing plates 16 press the pressing ring 12 to clamp the workpiece 18. Compressed air is fed from the lower vent hole 8 to move the sleeve 6 down, and the three top posts 17 make the three pressing plates 16 loosen the pressing ring 12, so that the workpiece 18 can be removed.
[0013] The fixed connection method in the present invention is screw connection or welding, and the material used except for the O-ring seal is steel or cast iron.
[0014] The invention is a rigid clamping outsourcing clamp with a small pneumatic clamping cylinder for clamping, which can meet two conditions: 1. The upper pressure ring is compressed evenly; 2. The outer diameter of the cylinder is covered by a rigid sleeve (that is, the upper positioning ring). And the lower positioning ring) outsourcing clamping. The rigid outsourcing fixture barrel comes from four forces. The outer circle of the cylinder liner is divided into upper and lower sections. The pressure is carried by the rigid fixture barrel with a small fit gap. The lower end of the workpiece support shoulder is directly placed on the upper end of the fixture barrel for positioning and pressing up. The force is pneumatically compressed by three uniformly distributed cylinders, which play a fixed and compressive role, so that the two forces during the high-speed cutting and traveling of the boring bar can be decomposed and offset, which is suitable for the characteristics of cylindrical barrels and thin walls. Various size tolerance requirements.
[0015] The technical indicators of the present invention tested by the company's measurement room are as follows:
[0016] 1. The maximum length of the workpiece: 250mm
[0017] 2. The maximum diameter of the workpiece: 220mm
[0018] 3. Taper error of processed workpiece: +0.03mm max
[0019] 4. Roundness error of processed workpiece: +0.025mm OE
[0020] 5. Parallelism error of processed workpiece: +0.015mm
[0021] 6. The cylindricity of the upper and lower positioning rings of the rigid outer clamping device of the vertical fine boring machine: 0.0125mm
[0022] 7. Vertical precision boring machine rigid outsourcing clamping device stop jump: 0.02mm
[0023] 8. The pneumatic pressing force of three uniformly distributed cylinders is 0.45Mpa.

PUM

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Description & Claims & Application Information

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