Fixed rotating clamp for machining marine engine cylinder sleeve

Abstract

The utility model discloses a fixed rotating clamp for processing a marine engine cylinder sleeve, which is characterized in that a plurality of tensioning mechanisms for tensioning and fixing an inner hole of the cylinder sleeve are arranged on a base, and tensioning and fixing are realized through a pair of telescopic sliding blocks controlled by a screw rod mechanism in the tensioning mechanisms. And a machine tool connecting shaft which synchronously rotates is also fixed on the base. The inner hole of the cylinder sleeve of the engine is clamped through the tensioning mechanism of a screw sliding block structure, and rapid clamping of a workpiece is achieved.

Description

Technical Field

[0001] The utility model relates to the field of cylinder sleeve processing tooling, in particular to a fixed-rotation fixture used for processing a cylinder sleeve of a marine engine. Background Art

[0002] When lathe machining the cylinder liner of a marine diesel engine, most of the end faces and the inner holes of the end faces cannot be directly machined by using a chuck or a center clamp. They need to be turned around and the center bracket installed for machining multiple times. As a result, multiple clamping will cause time waste and accumulation of precision errors. In addition, the clamping processing mode of the center bracket is equivalent to adding a transition fixture as a force-bearing part, which poses certain safety hazards during the high-speed rotation of the machine tool. Utility Model Content

[0003] In order to overcome the above-mentioned defects of the prior art, the purpose of the utility model is to provide a fixed and rotatable fixture for processing a cylinder liner of a marine engine, thereby reducing the number of fixture replacement times and improving processing efficiency.

[0004] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0005] A fixed and rotating fixture for processing a cylinder liner of a marine engine is provided on a base with a plurality of tensioning mechanisms for tensioning and fixing with the inner hole of the cylinder liner. The tensioning and fixing is achieved by a pair of telescopic sliders controlled by a screw mechanism in the tensioning mechanisms. A synchronously rotating machine tool connecting shaft is also fixed on the base.

[0006] In a preferred embodiment of the utility model, a plurality of tensioning grooves are provided on the base, the openings of the tensioning grooves are in the same radial direction as the base and are evenly distributed along the outer circumference of the base, and the tensioning mechanism is disposed in the tensioning grooves.

[0007] In a preferred embodiment of the present invention, the telescopic slider includes a telescopic block and a lifting block that are slidably embedded in each other and whose adjacent surfaces are inclined to each other. The sliding embedding between the telescopic block and the lifting block is specifically achieved by a convex key extending toward both sides of the lifting block and a sliding groove on the telescopic block that matches the convex key.

[0008] In a preferred embodiment of the present invention, the screw mechanism includes an adjusting rod as a screw mechanism and one end of which is connected to the lifting block, and a flat block as a nut mechanism meshingly connected to the adjusting rod.

[0009] In a preferred embodiment of the utility model, a through hole is vertically opened on the lifting block, the adjusting rod passes through the through hole and is connected to the lifting bottom plate, and the lifting bottom plate is fixed to the bottom of the lifting block.

[0010] In a preferred embodiment of the present invention, a wear-resistant component is further provided on the outer side of the telescopic block.

[0011] In a preferred embodiment of the present utility model, a fixing hole is provided on the connecting end surface of the machine tool connecting shaft.

[0012] In a preferred embodiment of the present invention, a positioning hole is further provided on the connecting end surface.

[0013] In a preferred embodiment of the present invention, the beneficial effects of the present invention are:

[0014] The utility model provides a fixed-rotation clamp for processing a marine engine cylinder sleeve, which clamps the inner hole of the engine cylinder sleeve through a tightening mechanism with a screw slider structure, thereby realizing rapid clamping of the workpiece. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art are briefly introduced below.

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0017] Figure 2 This is the exploded view after removing the machine tool connecting axis.

[0018] Figure 3 This is a schematic diagram of the base.

[0019] Figure 4 It is an exploded view of the tensioning mechanism. DETAILED DESCRIPTION

[0020] In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "upper", "lower", "left", "right", "inside", "outside", etc. are based on the directions or positional relationships shown in the accompanying drawings. The above description is simplified for the convenience of describing the present invention, and does not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, it should not be understood as a limitation on the present invention.

[0021] The singular forms "a", "said" and "the" used in the specification include plural forms unless clearly indicated. The terms "include", "comprise" and "contain" used in the specification indicate the presence of the claimed features, but do not exclude the presence of one or more other features. The term "and / or" used in the specification includes any and all combinations of one or more of the relevant listed items.

[0022] The following will describe exemplary embodiments of the present application with reference to the accompanying drawings. However, it should be understood that the present application can be presented in a variety of different ways and is not limited to the embodiments described below. It should also be understood that the embodiments disclosed herein can be combined in various ways to provide more additional embodiments. In all drawings, the same reference numerals represent the same or functionally identical elements.

[0023] refer to Figure 1 and Figure 2 A fixed and rotating fixture for processing a cylinder liner of a marine engine is disclosed. A machine tool connecting shaft 10 for connecting to a machine tool is fixed on a fixed base 30. A tensioning mechanism 40 which can be extended and retracted in a radial direction is also provided on the base 30. The tensioning mechanism 40 is fixedly connected to the inner hole of the cylinder liner through a tensioning action, thereby driving one end of the cylinder liner to rotate along with the machine tool.

[0024] An axial hole 31 is provided at the axial center of the base 30, and the machine tool connecting shaft 10 is inserted into the axial hole 31 with interference fit to be fixed. Four tensioning grooves 32 for accommodating the tensioning mechanism 40 are equally divided and provided on the outer edge of the base 30, and the openings of the tensioning grooves 32 are all opened in the radial direction of the base 30. After the tensioning mechanism 40 is installed in the tensioning grooves 32, a cover plate 20 is added on the top, and the cover plate 20 is fixed to the upper part of the base 30 by the cover plate screws 44, and cooperates with the base 30 to clamp the tensioning mechanism 40 in the tensioning grooves 32.

[0025] Combined with reference Figure 3 and Figure 4 The tensioning mechanism 40 is mainly composed of a telescopic slider mechanism composed of adjacent lifting blocks 48 and telescopic blocks 49, and a screw mechanism composed of a flat block 45 and an adjusting rod 41 for controlling the movement of the telescopic slider mechanism. The adjacent surface between the lifting block 48 and the telescopic block 49 is an inclined surface 40a. A pair of convex keys 48b extending laterally are provided on the side of the lifting block 48 close to the telescopic block 49. Similarly, a slide groove 49a similar to the convex key 48b is provided on the side of the telescopic block 49 close to the lifting block 48. The lifting block 48 and the telescopic block 49 are connected by sliding engagement through the convex key 48b and the slide groove 49a, so that when the lifting block 48 moves vertically upward, the telescopic block 49 is affected by the keyway structure and moves toward the axis of the base 30, and when the lifting block 48 moves vertically downward, it moves in a direction away from the axis.

[0026] A through hole 48a is vertically provided on the lifting block 48, and the adjusting rod 41 passes through the through hole 48a and is movably connected to the lifting block 48. Specifically, the bottom of the adjusting rod 41 is connected to a lifting base plate 47 and can rotate freely around the axis of the adjusting rod 41, and the lifting base plate 47 is fixed to the bottom of the lifting block 48. The flat block 45 is fixed to the lower side of the cover plate 20 by the flat block screw 46, and the adjusting rod 41 enters the through hole 48a after passing through the flat block 45. The outer periphery of the adjusting rod 41 is arranged with an external thread, and the corresponding flat block 45 is arranged with an internal thread, thereby forming the above-mentioned screw mechanism. The rotating adjusting rod 41 drives the lifting block 48 to move through the lifting base plate 47, thereby controlling the telescopic block 49. A number of wear-resistant components 43 are fixed to the outer side of the telescopic block 49 by wear-resistant component fixing screws 49b, which are used to increase the friction when contacting with the workpiece.

[0027] In one embodiment, the opening side of the tensioning groove 32 is further provided with a limiting groove 33 that expands outwards on both sides, and the width between the limiting grooves 33 matches the lateral dimension of the wear-resistant component 43. When the wear-resistant component 43 moves centripetally with the telescopic block 49, the limiting groove 33 is used to limit the wear-resistant component 43, limiting the maximum retraction amount of the telescopic block 49, and preventing the wear-resistant component 43 from crushing the clamp.

[0028] In one embodiment, a plurality of fixing holes 14 for fixing the fasteners to the machine tool and positioning holes 12 for basic positioning are provided on the connecting end surface 11 of the machine tool connecting shaft 10 .

[0029] In the specification, when an element is said to be "on", "fixed" to, "connected" to, "engaged" to, etc., another element, the element may be directly on, fixed to, connected to, engaged to, or in contact with the other element, or there may be intervening elements. In the specification, when a feature is arranged "adjacent" to another feature, it may mean that the feature has a portion overlapping with the adjacent feature or a portion located above or below the adjacent feature.

Claims

1. A fixed and rotating fixture for processing a cylinder liner of a marine engine, characterized in that: A plurality of tensioning mechanisms for tensioning and fixing with the inner hole of the cylinder sleeve are arranged on the base, and the tensioning and fixing is realized by a pair of telescopic sliders controlled by a screw mechanism in the tensioning mechanism. A synchronously rotating machine tool connecting shaft is also fixed on the base.

2. A fixed and rotating fixture for processing a cylinder liner of a marine engine as claimed in claim 1, characterized in that: The base is provided with a plurality of tensioning grooves, the openings of the tensioning grooves are in the same radial direction as the base and are evenly distributed along the outer circumference of the base, and the tensioning mechanisms are arranged in the tensioning grooves.

3. A fixed and rotating fixture for processing a cylinder liner of a marine engine as claimed in claim 2, characterized in that: The telescopic slider includes a telescopic block and a lifting block which are slidably embedded in each other and whose adjacent surfaces are mutually inclined. The sliding embedding between the telescopic block and the lifting block is specifically achieved by convex keys extending toward both sides of the lifting block and sliding grooves on the telescopic block matching the convex keys.

4. A fixed and rotating fixture for processing a cylinder liner of a marine engine as claimed in claim 3, characterized in that: The screw mechanism includes an adjusting rod as a screw mechanism and one end of which is connected to the lifting block, and a flat block as a nut mechanism which is meshed and connected to the adjusting rod.

5. A fixed and rotating fixture for processing a cylinder liner of a marine engine as claimed in claim 4, characterized in that: A through hole is vertically opened on the lifting block, and the adjusting rod passes through the through hole and is connected with the lifting bottom plate, and the lifting bottom plate is fixed to the bottom of the lifting block.

6. A fixed and rotating fixture for machining a cylinder liner of a marine engine as claimed in any one of claims 3 to 5, characterized in that: A wear-resistant component is also arranged on the outer side of the telescopic block.

7. A fixed and rotating fixture for machining a cylinder liner of a marine engine as claimed in claim 6, characterized in that: The connecting end surface of the machine tool connecting shaft is provided with a fixing hole.

8. A fixed and rotating fixture for machining a cylinder liner of a marine engine as claimed in claim 7, characterized in that: A positioning hole is also arranged on the connecting end surface.

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