CN201217176Y

CN201217176Y - Honing tool for fine machining of large-diameter deep inner bore

Info

Publication number: CN201217176Y
Application number: CNU2008200752751U
Authority: CN
Inventors: 李鸿斌
Original assignee: Tianjin Zhongzhong Science Technology and Engineering Co Ltd
Current assignee: Tianjin Zhongzhong Science Technology and Engineering Co Ltd
Priority date: 2008-07-10
Filing date: 2008-07-10
Publication date: 2009-04-08
Anticipated expiration: 2018-07-10

Abstract

The utility model relates to a honing head for a finish machining big diameter deep inner hole, which includes a tool holder, an whetstone clamping device and a whetstone; and the honing head is characterized in that a square hole is arranged at the front end of the tool holder; the whetstone clamping device is provided with a square cross arm which runs through the square hole in the front of the tool holder, and both ends thereof are provided with long grooves which lead to the end; a baffle plate is fixed at the part near the rear side in the long groove; a spring pressing plate, a spring and a sliding block are arranged at the front side of the baffle plate; a pressure regulating screw is arranged on the baffle plate; the top at the rear end of the press regulating screw are propped on the spring pressing plate; a cover plate is arranged at the front end of the long groove upper opening; whetstone seats are respectively arranged at both ends of the square cross arm and are connected and fixed at front end of a sliding block in the long groove by bolts; and the whetstone is fixed at front end of the whetstone seat. The honing head has the advantages that the structure is simple, the manufacture is easy, and the production cost is low; thus effectively improving the processing precision, particularly being applied to the finish machining for the inner surface of the big diameter deep holes.

Description

The honing head that fine finishining large-diameter deep endoporus is used

Technical field

The utility model belongs to grinding equipment, particularly relates to the honing head that a kind of fine finishining large-diameter deep endoporus is used.

Background technology

Honing is to utilize the honing head that has grinding stone that finishing is carried out in the hole; the polishing method for processing; its crudy is for the function of parts and have significant effects service life; in the heavy-duty machinery manufacturing; the inner surface that often has the large diameter, deep borehole of large-size workpiece need carry out honing processing; because it often matches with shaft-like workpiece; the required precision height; surface roughness often requires below Ra 0.8 μ m; difficulty of processing is very big; in present known technology; carrying out above-mentioned processing normally adopts by knife bar; axle; with the bar formula honing head that is inlaid in the strip grinding stone formation on the mandrel; not only structure is complicated for it, the manufacturing cost height, and because bore dia is big and dark; it is eccentric that honing head is produced, and makes dimensional accuracy and surface roughness after the processing be difficult to reach requirement.

Summary of the invention

The utility model provides a kind of simple in structure, low cost of manufacture, the honing head that the fine finishining large-diameter deep endoporus that machining accuracy is high is used for solving the technical problem that exists in the known technology.

The technical scheme that the utility model is taked for the technical problem that exists in the solution known technology is:

The honing head that fine finishining large-diameter deep endoporus is used, it includes knife bar, oilstone clamping device and oilstone, the front end of knife bar radially has square hole, the oilstone clamping device is provided with a square transverse arm that is installed in the knife bar front end square hole, two ends at square transverse arm all have the long recess that leads to the termination, close rear side place in the long recess is fixed with baffle plate, the front side of baffle plate is equipped with spring bearer plate successively, spring and slide block, on baffle plate, be screwed pressure regulating screw, the tail end of pressure regulating screw leans on spring bearer plate, front end side at slide block has the backstop groove, on the outer wall of long recess front end, be screwed stop screw, its tail end is deep in the backstop groove of slip front side, long recess front end suitable for reading also is equipped with cover plate, two ends at square transverse arm are provided with oil stone base, and it is fastened on the front end of long recess inner slide with screw, and oilstone is fixed on the front end of oil stone base.

The utility model can also adopt following technical measures:

Square transverse arm is that sliding fit is installed in the square hole of knife bar front end.

Oil stone base is the flute profile oil stone base that front end has square three-way groove, and oilstone clamps in the square three-way groove that is fixed on flute profile oil stone base front end with screw.

Advantage and the good effect that the utlity model has are: with regard to the bar formula honing head of existing processing large diameter, deep borehole, the utility model is simple in structure, handling ease, low cost of manufacture, in addition because the square transverse arm of its oilstone clamping device is that sliding fit is installed in the knife bar, so when there is off-centre at knife bar and machine tool chief axis center slightly, knife bar will slide on square transverse arm, play self balancing effect, can improve machining accuracy effectively, be particularly suitable for the finished machined of large-diameter deep internal surface of hole.

Description of drawings

Fig. 1 is a structural representation of the present utility model;

Fig. 2 is that the A of Fig. 1 is to cutaway view.

Label among the figure is respectively: the 1-oilstone; The 2-screw; The 3-screw; 4-flute profile oil stone base; The 5-screw; The 6-cover plate; The 7-spring; The 8-baffle plate; The 9-pressure regulating screw; The 10-knife bar; The 11-spring bearer plate; The square transverse arm of 12-; The 13-slide block; 14-backstop groove; The 15-stop screw.

The specific embodiment

For further understanding summary of the invention of the present utility model, characteristics and effect, exemplify following examples now, and conjunction with figs. is described in detail as follows:

See also Fig. 1 and Fig. 2, it is provided with a knife bar 10, the rear end of knife bar has and is used for the tail cone handle that is connected with machine tool chief axis, the front end of knife bar is equipped with the oilstone clamping device, its structure is that the front end at knife bar radially has square hole, sliding fit is coated with square transverse arm 12 in the square hole, the two ends of square transverse arm all have the square long recess that leads to the termination, close rear side place in the square long recess adopts the mode plug-in mounting of slotting on the two side to be fixed with baffle plate 8, the front side of baffle plate is equipped with spring bearer plate 11 successively, spring 7 and slide block 13, on baffle plate, be screwed pressure regulating screw 9, the tail end of pressure regulating screw leans on spring bearer plate, for anti-limited slip block is deviate from from long recess, two sides of front end at slide block have backstop groove 14, on the outer wall of long recess front end, be screwed stop screw 15, its tail end is deep in the backstop groove of slip front side, long recess front end suitable for reading also is equipped with cover plate 6 with screw 5, two ends at square transverse arm are provided with the flute profile oil stone base 4 that front end has square three-way groove, it is fastened on the front end of the slide block in the long recess with screw 3, oilstone 1 is processed into pane shape, and it clamps in the square three-way groove that is fixed on the flute profile oil stone base with screw 2.Baffle plate, spring bearer plate, spring, slide block that is equipped with in the square long recess at above-mentioned square transverse arm two ends and the pressure regulating screw that is screwed on baffle plate are formed the honing pressure regulating mechanism jointly, can regulate the pressure of oilstone to hole wall by turning pressure regulating screw.

The utility model can be used on that the inner surface to large diameter, deep borehole carries out finished machined on the large-scale borer, its process is: on large-scale borer, elder generation is machined to the roughness boring of the inner surface of workpiece about Ra3.2 μ m, and diameter stays the surplus of 0.05～0.07mm, then knife bar 10 of the present utility model is installed on the machine tool chief axis, utilize the pressure regulating screw 9 in the square long recess in square transverse arm two ends that the spacing of two oilstones 1 is adjusted to greater than the aperture again, its size quantity greater than the aperture will be determined the pressure requirement of hole wall according to the size and the oilstone of spring 7 elastic force, then just can carry out honing has processed, spray grinding fluid incessantly will in the honing process oilstone, rinse out with the temperature of reduction grinding face and abrasive dust.

Claims

1. honing head that fine finishining large-diameter deep endoporus is used, it includes knife bar, oilstone clamping device and oilstone, it is characterized in that: the front end of knife bar radially has square hole, the oilstone clamping device is provided with a square transverse arm that is installed in the knife bar front end square hole, two ends at square transverse arm all have the long recess that leads to the termination, close rear side place in the long recess is fixed with baffle plate, the front side of baffle plate is equipped with spring bearer plate successively, spring and slide block, on described baffle plate, be screwed pressure regulating screw, the tail end of pressure regulating screw leans on spring bearer plate, front end side at described slide block has the backstop groove, on the outer wall of long recess front end, be screwed stop screw, its tail end is deep in the backstop groove of slip front side, long recess front end suitable for reading also is equipped with cover plate, two ends at described square transverse arm are provided with oil stone base, and it is fastened on the front end of long recess inner slide with screw, and described oilstone is fixed on the front end of oil stone base.

2. the honing head that fine finishining large-diameter deep endoporus according to claim 1 is used is characterized in that: described square transverse arm is that sliding fit is installed in the square hole of described knife bar front end.

3. the honing head that fine finishining large-diameter deep endoporus according to claim 1 is used is characterized in that: described oil stone base is the flute profile oil stone base that front end has square three-way groove, and described oilstone clamps in the square three-way groove that is fixed on flute profile oil stone base front end with screw.