CN202192508U - Elastic positioning external grinding mandrel with high precision - Google Patents

Abstract

The utility model relates to the technical field of mechanical manufacturing, in particular to a high-precision elastic positioning grinding outer circle mandrel. In the prior art, the process of grinding the outer circle utilizes a rigid mandrel or a plastic mandrel for processing, and the processing method cannot guarantee the coaxiality precision requirement. The utility model is composed of a hollow taper sleeve, a spring sleeve, an opening pressure plate, a compression nut, a lock nut, a left block and a right block; the hollow taper sleeve is a hollow shaft with a shaft shoulder on the left and a taper section on the outer circle. The outer circle of the shoulder is matched with the lock female thread, and the right side of the shaft shoulder is the workpiece positioning surface; the left plug is welded in the slit of the left end of the hollow taper sleeve, and the right plug is welded in the right end of the inner hole of the hollow taper sleeve, and the hollow taper sleeve, left plug and right plug It forms a rigid mandrel body; the inner hole of the spring sleeve has the same taper as the outer cone section of the hollow taper sleeve, and is set on the outer conical section; the compression nut is matched with the right end thread of the right plug, and the opening pressure plate is inserted into the right plug shaft, between the spring between the sleeve and the compression nut. The utility model has the advantages of high processing precision, convenient clamping and simple operation.

Description

High-precision elastic positioning grinding outer circle mandrel

technical field

The utility model relates to the technical field of mechanical manufacturing, in particular to a high-precision elastic positioning grinding outer circle mandrel, which is used for processing various sets of workpieces requiring high coaxial precision.

Background technique

Sleeve workpieces are prone to deformation, vibration, and low precision during processing. In the prior art, the outer circle grinding process uses a rigid mandrel or a plastic mandrel for processing. The processing method cannot guarantee the coaxiality accuracy and cannot meet the requirements. Design requirements. When machining with a rigid mandrel, the gap between the mandrel and the workpiece is too large, which cannot guarantee the coaxiality requirements of the workpiece. The shaft and the inner hole of the workpiece cannot guarantee a complete tight fit.

Contents of the invention

The purpose of the utility model is to provide a high-precision elastic positioning grinding outer circle mandrel to solve the above-mentioned problems in the prior art. The elastic positioning grinding outer circular mandrel has high working efficiency, accurate positioning, high processing precision and convenient use.

The technical solution adopted by the utility model is that the outer circular mandrel of the high-precision elastic positioning mill is composed of a hollow taper sleeve, a spring sleeve, an opening pressure plate, a compression nut, a lock nut, a left plug and a right plug; the hollow taper sleeve is the left side A hollow shaft with a shoulder and a taper section on the outer circle, the outer circle of the shoulder is matched with the lock nut thread, and the right side of the shoulder is the workpiece positioning surface; the left plug is welded in the spigot at the left end of the hollow taper sleeve, and the right plug is welded in the hollow The right end of the inner hole of the taper sleeve, the hollow taper sleeve, the left plug and the right plug form a rigid mandrel body; the inner hole of the spring sleeve has the same taper as the outer cone section of the hollow taper sleeve, and is set on the outer cone section; the compression nut and the right plug The right end thread fits, and the opening pressing plate is inserted on the right blocking shaft, between the spring sleeve and the compression nut.

The beneficial effect of the utility model is that the tension force of the spring sleeve is used to eliminate the gap between the mandrel and the workpiece, so as to ensure the coaxiality requirement of the workpiece, improve the machining accuracy, and facilitate clamping and simple operation.

Description of drawings

Fig. 1: is the schematic diagram of the structure of the hollow shaft body of the present invention.

Fig. 2: is the schematic diagram of the utility model after the workpiece is added.

Detailed ways

Among the figure: 1, hollow taper sleeve, 2, spring sleeve, 3, opening pressure plate, 4, compression nut, 5, lock nut, 6, workpiece, 7, left blocking, 8, right blocking.

As shown in Fig. 1-2, the outer circular mandrel of the high-precision elastic positioning mill is composed of a hollow taper sleeve 1, a spring sleeve 2, an opening pressure plate 3, a compression nut 4, a lock nut 5, a left plug 7 and a right plug 8; the hollow The taper sleeve 1 is a hollow shaft with a shaft shoulder on the left and a tapered section on the outer circle. The outer circle of the shaft shoulder is threaded with the lock nut 5, and the right side of the shaft shoulder is the workpiece positioning surface; the left plug 7 is welded on the left end of the hollow taper sleeve 1 In the sub-mouth, the right plug 8 is welded to the right end of the inner hole of the hollow taper sleeve 1, and the hollow taper sleeve 1, the left plug 7 and the right plug 8 form a rigid mandrel body; the inner hole of the spring sleeve 2 and the outer cone section of the hollow taper sleeve 1 Taper is identical, is enclosed within on the outer cone section; Compression nut 4 cooperates with the right end external thread of right block 8, and opening pressing plate 3 is inserted on the right block 8 axles, is between spring sleeve 2 and compression nut 4.

The taper of the outer cone section of the hollow tapered sleeve (1) and the inner hole of the spring sleeve (2) are both 1:5 to 1:7.

When the workpiece is processed, install the spring sleeve 2 on the rigid mandrel body, install the workpiece 6 on the spring sleeve 2, insert the opening pressure plate 3, and turn the compression nut 4, so that the opening pressure plate 3 pushes the workpiece 6 to move axially, close to the rigid The positioning surface of the shaft shoulder of the mandrel body, when the compression nut 4 does not rotate, the spring sleeve 2 expands and fits closely with the workpiece 6, and the high-precision elastic grinding outer circle mandrel is positioned on the outer element with the center holes of the left and right plugs On the main shaft of the grinding machine, the outer circle is processed; after the workpiece is processed, the compression nut 4 is loosened, the opening pressure plate 3 is pulled out, and the lock nut 5 is rotated to eject the workpiece.

The clamping device for the outer circular mandrel of this grinding machine can clamp multiple parts at one time according to the length of the workpiece.

Claims (2)

1. a high precision elastic location cylindrical grinding mandrel is characterized in that being made up of hollow tapered sleeve (1), spring housing (2), opening pressing plate (3), clamp nut (4), locknut (5), a left side stifled (7) and right stifled (8); Hollow tapered sleeve (1) is that the left side has the hollow shaft that the shaft shoulder, cylindrical have tapered section, shaft shoulder cylindrical and locknut (5) threaded engagement, and the shaft shoulder right side is the workpiece locating surface; A left side stifled (7) is welded in the rim of the mouth of hollow tapered sleeve (1) left end, and right stifled (8) are welded on the right-hand member of hollow tapered sleeve (1) endoporus, and the rigid core axis body is formed in hollow tapered sleeve (1), a left side stifled (7) and right stifled (8); Spring housing (2) endoporus is identical with hollow tapered sleeve (1) cylindrical cone segments tapering, is enclosed within on the cylindrical cone segments, cooperates with the rigid central spindle body cone; Clamp nut (4) and right right-hand member threaded engagement of blocking up (8), opening pressing plate (3) insert on right stifled (8) axle, between spring housing (2) and clamp nut (4).

2. high precision elastic according to claim 1 location cylindrical grinding mandrel is characterized in that the tapering of hollow tapered sleeve (1) cylindrical and spring housing (2) endoporus is 1: 5～1: 7.

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