A turning positioning tool for eccentric circle of crankshaft workpiece

Abstract

The utility model discloses a kind of turning positioning tool of eccentric circle of crankshaft workpiece, the power input end radial adjustment of positioning tool is fixed on lathe output shaft, the power output end eccentricity of this positioning tool is coaxially clamped fixed crankshaft workpiece, and by the eccentric turning section of positioning tool coaxial positioning crankshaft workpiece with lathe output shaft;Positioning tool includes axial clamping sleeve, eccentric shaft rod and eccentric continuous shaft sleeve, wherein the power input end of eccentric continuous shaft sleeve is coaxially fixed with lathe output shaft, the power output end radial adjustment of eccentric continuous shaft sleeve is connected eccentric shaft rod;The power output end of eccentric shaft rod is axially penetrated axial clamping sleeve and radially inner bracing sleeve and is set crankshaft workpiece, and the shaft end of eccentric shaft rod is provided with snap spring, which is matched with axial clamping sleeve to axially clamp crankshaft workpiece.The positioning tool makes the current processing section of crankshaft workpiece always coaxial with lathe output shaft, and each section of crankshaft workpiece is taken as reference with lathe output shaft, to avoid accumulated error.

Description

TECHNICAL FIELD

[0001] The utility model relates to tool fixture technical field, concretely is a kind of turning positioning tool of crankshaft workpiece eccentric circle. BACKGROUND

[0002] In the prior art machining field, crankshaft workpiece processing needs artificial calculation to carry out coaxial positioning, especially in the process of processing multi-section crankshaft, the eccentricity of each section of crankshaft is manually adjusted with the previous section of crankshaft as reference, which is easy to produce serious accumulated error and reduce machining accuracy. SUMMARY

[0003] The utility model aims at at least one of the technical problems existing in prior art is solved.For this reason, one purpose of the utility model is to provide a kind of turning positioning tool of crankshaft workpiece eccentric circle, the positioning tool makes the current processing section of crankshaft workpiece always with lathe output shaft coaxial, and each section of crankshaft workpiece is with lathe output shaft as reference, avoid producing accumulated error, and simple structure is easy to realize.

[0004] In order to solve the above problems, the utility model provides a kind of turning positioning tool of crankshaft workpiece eccentric circle, the power input end of positioning tool is radially adjusted and fixed on lathe output shaft, the eccentric turning section of the eccentricity of positioning tool coaxial positioning crankshaft workpiece and lathe output shaft is fixed with the eccentricity of the power output end of positioning tool and is radially clamped;

[0005] Positioning tool includes axial clamping sleeve, eccentric shaft rod and eccentric shaft sleeve, wherein the power input end of eccentric shaft sleeve is coaxially fixed with lathe output shaft, and the power output end of eccentric shaft sleeve is radially adjusted and connected with eccentric shaft rod;The power output end of eccentric shaft rod penetrates axial clamping sleeve axially and radially supports sleeve crankshaft workpiece, and the shaft end of eccentric shaft rod is provided with snap spring for cooperating with axial clamping sleeve to clamp crankshaft workpiece axially.

[0006] Preferably, the power input end of eccentric shaft sleeve is radially fixed and inserted with pin fixed light pole of pin fixed position lathe output shaft, the power output end of eccentric shaft sleeve is radially threaded and inserted with pin fixed screw rod, and the shaft end of eccentric shaft sleeve is axially supported on the inner wall of axial clamping sleeve.

[0007] The utility model has the advantages compared with prior art:

[0008] The utility model discloses a kind of turning positioning tool of eccentric circle of crankshaft workpiece, and eccentric shaft sleeve is connected eccentric shaft rod in the shaft end eccentric adjustment of lathe output shaft, and eccentric shaft rod and axial clamping sleeve are driven by lathe output shaft autorotation with lathe output shaft as pivot to revolve;By the shaft end of eccentric shaft sleeve, the crankshaft workpiece and axial clamping sleeve of spring-loaded pin on the sleeve of eccentric shaft rod are clamped axially, so as to adjust the axis of crankshaft workpiece eccentric machining end and the axis of lathe output shaft coincide. BRIEF DESCRIPTION OF DRAWINGS

[0009] In order to more clearly illustrate the technical scheme in the embodiments of the present application or prior art, the drawings needed to be used in the embodiments or prior art description will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the present application, and those skilled in the art can also obtain other drawings according to these drawings without creating any creative labor.

[0010] Fig. 1 It is a three-dimensional structural schematic diagram (crankshaft workpiece installation posture) of the utility model;

[0011] Fig. 2 It is an X-axis cross-sectional view (without installing crankshaft workpiece) of the utility model;

[0012] Fig. 3 It is a Y-axis cross-sectional view (without installing crankshaft workpiece) of the utility model;

[0013] In the figure: 1-eccentric shaft rod; 2-spring-loaded pin; 3-crankshaft workpiece; 4-axial clamping sleeve; 5-pinning screw rod; 6-eccentric shaft sleeve; 7-pinning light pole; 8-lathe output shaft. DETAILED DESCRIPTION

[0014] The embodiments of the present application will be described in detail below, and examples of the embodiments are shown in the drawings, wherein the same or similar reference signs represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are only used to explain the present application, and cannot be understood as a limitation of the present application.

[0015] In the description of the present application, it should be explained that, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through intermediate medium; it can be the communication inside two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to specific circumstances.

[0016] The utility model disc be further explained in detail below with the drawings.

[0017] Combine Figs. 1-3 The utility model discloses a turning positioning tool for eccentric circle of crankshaft workpiece, the power input end radial adjustment of positioning tool is fixed on lathe output shaft 8, the power output end eccentricity and axial clamping fixed crankshaft workpiece 3 of positioning tool, and by eccentric turning section of positioning tool coaxial positioning crankshaft workpiece and lathe output shaft;

[0018] Positioning tool includes axial clamping sleeve 4, eccentric shaft rod 1 and eccentric connecting shaft sleeve 6, wherein the power input end of eccentric connecting shaft sleeve is coaxially fixed with lathe output shaft, and the power output end of eccentric connecting shaft sleeve is connected with eccentric shaft rod in radial adjustment, the power output end of eccentric shaft rod penetrates axial clamping sleeve in axial direction and is radially supported on crankshaft workpiece, and the shaft end of eccentric shaft rod is provided with clamp spring 2 for cooperating with axial clamping sleeve to clamp crankshaft workpiece in axial direction.

[0019] Preferably, the power input end of eccentric connecting shaft sleeve is radially fixed with pin fixed position lathe output shaft pin fixed light pole 7, the power output end of eccentric connecting shaft sleeve is radially threaded with pin fixed screw 5, and the shaft end of eccentric connecting shaft sleeve is axially supported on the inner wall of axial clamping sleeve.

[0020] The working principle of the utility model is:

[0021] The utility model discloses a turning positioning tool for eccentric circle of crankshaft workpiece, and the positioning process is as follows:

[0022] 1, first, the coaxial positioning of crankshaft workpiece processing section and lathe output shaft is carried out, when positioning, the clamp spring on eccentric shaft rod is removed, then the connecting body of eccentric shaft rod, eccentric connecting shaft sleeve and lathe output shaft is pulled out axially in axial clamping sleeve, then the crankshaft workpiece is sleeved on eccentric shaft rod, the coaxiality of lathe main shaft and crankshaft workpiece is detected by micrometer, if the coaxiality does not meet the requirement, then the connecting position of eccentric shaft rod is adjusted on pin fixed screw, as shown in the drawing, Fig. 3

[0023] 2, after the coaxiality of crankshaft workpiece to be processed section and lathe output shaft, the crankshaft workpiece is removed from eccentric shaft rod, and the connecting body of eccentric shaft rod, eccentric connecting shaft sleeve and lathe output shaft is inserted into axial clamping sleeve.

[0024] 3, then the crankshaft workpiece is sleeved on eccentric shaft rod and is clamped and tightened, so that the coaxial positioning of crankshaft workpiece to be processed section and lathe output shaft is completed.

[0025] 4, repeat the above 1-3 steps, and the turning processing of multiple eccentric shafts on the whole crankshaft is completed.

[0026] ​The above has described the utility model and its implementation mode, which is not restrictive, and the drawings only show one of the implementation modes of the utility model, and the actual structure is not limited thereto. In summary, if a person skilled in the art is inspired thereby, without departing from the creative purpose of the utility model, similar structural modes and embodiments are not creatively designed, which should belong to the protection scope of the utility model.

Claims

1. A turning positioning tool for eccentric circle of a crankshaft workpiece, characterized in that: The power input end of the positioning tool is fixed on the output shaft of the lathe, the power output end of the positioning tool is eccentric and axially clamps and fixes the crankshaft workpiece, and the eccentric turning section of the positioning tool coaxially positions the crankshaft workpiece and the output shaft of the lathe; The positioning tool comprises an axial clamping sleeve, an eccentric shaft rod and an eccentric connecting sleeve, wherein the power input end of the eccentric connecting sleeve is coaxially fixed to the output shaft of the lathe, and the power output end of the eccentric connecting sleeve is connected to the eccentric shaft rod in a radial adjustment manner; the power output end of the eccentric shaft rod axially penetrates the axial clamping sleeve and radially supports the crankshaft workpiece, and the shaft end of the eccentric shaft rod is sleeved with a clamp spring which axially clamps the crankshaft workpiece in cooperation with the axial clamping sleeve.

2. The turning positioning tool for eccentric circle of a crankshaft workpiece according to claim 1, characterized in that: The power input end of the eccentric connecting sleeve is radially fixedly inserted with a pin-fixed light rod which is fixed to the pin-fixed light rod of the lathe, the power output end of the eccentric connecting sleeve is radially screwedly inserted with a pin-fixed screw rod, and the shaft end of the eccentric connecting sleeve is axially supported on the inner wall of the axial clamping sleeve.

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