CN206009861U - Automatically drive top - Google Patents

Abstract

This utility model is related to one kind and drives automatically top, drives the drive block that top, spring, drive shaft, actuating sleeve constitute by spindle end, and the drive block is located at the big end of step endoporus that splined shaft is provided with；Described spindle end drives top one end to be cased with actuating sleeve and in gap cooperation, the actuating sleeve and spindle end drive top between spring is installed；Described actuating sleeve is provided with a circle conical tooth by circular cone and annulus cylinder integrated die-casting molding, wherein circular cone, and the radial surface of annulus cylinder is provided with two and is symmetric strip through-hole；The beneficial effects of the utility model are：Improve class to produce, through actual measurement, production efficiency improves 60%, and reduces useful labor intensity, and in three-shift system workshop, improved efficiency is obvious.

Description

Automatic drive top

technical field

The utility model belongs to the technical field of tooling, in particular to an automatic driving tip.

Background technique

At present, when the spline shaft is processed for hard turning of the bearing gear, the double center is used to withstand the center hole for positioning, and each part needs to be installed with a heart chuck for driving the part before processing. There are the following disadvantages: 1. The production efficiency is low, and a chicken heart chuck needs to be installed before each processing, and it must be removed after the processing is completed; 2. The labor intensity of the operator is high, and the steps of installing and removing the chicken heart chuck are added; 3. Robots, etc. The equipment cannot realize the installation of the movement chuck, so automatic production cannot be realized.

Contents of the invention

The purpose of the utility model is to overcome the deficiencies of the prior art, and provide an automatic driving top with high production efficiency and low labor intensity.

The purpose of this utility model is accomplished through the following technical scheme, the driving block composed of the main shaft end driving top, spring, driving shaft, and driving sleeve, the driving block is located at the large end of the stepped inner hole provided on the spline shaft; One end of the driving tip of the main shaft end is covered with a driving sleeve and is in clearance fit, and a spring is installed between the driving sleeve and the driving tip of the main shaft end; A ring of conical teeth is arranged on the shape block, and two symmetrically distributed strip-shaped through-holes are arranged on the radial surface of the ring cylinder.

Preferably, when the spline shaft is processed, the conical teeth of the above-mentioned conical block are engaged with the sharp corners of the stepped surface of the stepped inner hole provided on the spline shaft.

Preferably, the strip-shaped through hole of the annular cylinder is aligned with the through hole radially provided on the drive tip at the spindle end and inserted into the drive shaft.

The beneficial effects of the utility model are as follows: increase the shift production, increase the production efficiency by 60% through actual measurement, and reduce the effective labor intensity. In the three-shift production workshop, the efficiency improvement is obvious.

Description of drawings

Fig. 1 is a schematic diagram of the structure of the utility model in a processing state.

Fig. 2 is a structural schematic diagram of the drive sleeve of the present invention.

Fig. 3 is a schematic diagram of the structure of the driving tip of the main shaft end of the present invention.

The labels in the accompanying drawings are: 1, the driving top of the main shaft end; 2, the spring; 3, the driving shaft; 4, the driving sleeve; 5, the spline shaft; 6, the tailstock rotating top; 11, the through hole; 41, the cone Shaped block; 42, circular cylinder; 43, conical teeth; 44, strip through hole; 51, inner hole; 52, center hole.

detailed description

The utility model will be described in detail below in conjunction with the accompanying drawings: as shown in accompanying drawings 1 to 3, the utility model is driven by a spindle end driving a top 1, a spring 2, a drive shaft 3, and a drive sleeve 4. Located at the large end of the stepped inner hole 51 provided on the spline shaft 5; one end of the drive center 1 at the spindle end is covered with a drive sleeve 4 and is in a clearance fit, and the drive sleeve 4 is installed between the drive center 1 at the spindle end There is a spring 2; the drive sleeve 4 is integrally formed by die-casting a conical block 41 and an annular cylinder 42, wherein the conical block 41 is provided with a circle of conical teeth 43, and the radial surface of the annular cylinder 42 is provided with There are two strip-shaped through holes 44 distributed symmetrically.

The conical teeth 43 of the conical block 41 are engaged with the sharp corners of the stepped surface of the stepped inner hole 51 provided on the spline shaft 5 when the spline shaft 5 is processed.

The strip-shaped through-hole 44 of the annular cylinder 42 is aligned with the through-hole 11 provided in the radial direction of the drive center 1 at the spindle end and inserted into the drive shaft 3 .

Utilizing the characteristics of the structure of the spline shaft 5, a drive sleeve 4 driven by the inner surface is designed to drive the spline shaft 5 to rotate, and it is not necessary to install a sweetheart chuck when each part is processed.

The driving sleeve 4 and the main shaft driving top 1 adopt a large clearance fit to prevent the lateral force generated when the surface of the inner hole 51 is not concentric with the center hole 52 and affect the positioning accuracy of the center hole 52 . The inner hole 51 is in contact with the driving sleeve 4 , and the central hole 52 is in contact with the tip end of the driving tip 1 at the spindle end.

The drive of the drive sleeve 4 is driven circumferentially by the drive shaft 3 fixed on the spindle drive center 1 .

The driving sleeve 4 and the driving shaft 3 can be stretched in the axial direction. The tailstock rotating center 6 pushes the spline shaft 5 to the main shaft driving center 1, and fixes the spline shaft 5 axially with the main shaft driving center 1. The driving sleeve 4 is fixed on the spring Under the action of the spring force of 2, the surface of the conical tooth 43 of the driving sleeve 1 and the sharp angle of the step surface of the inner hole 51 of the shaft form an occlusal state, generating a frictional force greater than the cutting force and driving the parts to rotate.

The working principle of the utility model is as follows: using the top pressure of the tailstock rotary top 6 of the lathe and the spring force of the spring 2 of the main shaft to drive the top 1, the conical teeth 43 on the drive sleeve 4 are engaged with the sharp corners to form a driving force and drive The 5 parts of the spline shaft are rotated to complete the turning process.

The utility model is not limited to the above-mentioned embodiments, regardless of any changes in its shape or material composition, any structural design provided by the utility model is a deformation of the utility model, and should be considered as a modification of the utility model. within the scope of protection.

Claims (3)

1. A kind of automatic driving top, it is characterized in that: drive block (1), spring (2), drive shaft (3), driving sleeve (4) are formed by main shaft end, and this drive block is positioned at spline shaft ( 5) At the large end of the stepped inner hole (51) provided; one end of the drive tip (1) at the spindle end is covered with a drive sleeve (4) and is in clearance fit. The drive sleeve (4) and the spindle end A spring (2) is installed between the drive tops (1); the drive sleeve (4) is integrally die-cast from a conical block (41) and a ring cylinder (42), wherein a conical block (41) is provided with a The ring tapered tooth (43), is provided with two symmetrically distributed strip-shaped through holes (44) on the radial surface of the circular cylinder (42). 2. The automatic driving center according to claim 1, characterized in that: the conical teeth (43) of the conical block (41) are in contact with the spline shaft (5) when the spline shaft (5) is processed The pointed corners of the step surface of the provided step-shaped inner hole (51) are in an engaged state. 3. The automatic drive top according to claim 1, characterized in that: the strip-shaped through hole (44) of the circular cylinder (42) is connected to the through hole radially provided on the drive top (1) at the spindle end. Align and insert the drive shaft (3) into the hole (11).