CN202560977U

CN202560977U - Cam

Info

Publication number: CN202560977U
Application number: CN2012201376070U
Authority: CN
Inventors: 段大鹏; 张志刚
Original assignee: PEM CHINA CO Ltd
Current assignee: PEM CHINA CO Ltd
Priority date: 2012-04-01
Filing date: 2012-04-01
Publication date: 2012-11-28
Anticipated expiration: 2022-04-01

Abstract

The utility model relates to a machining device of an automatic lathe and particularly relates to a cam. The cam comprises a cam body, wherein the cam body is provided with a cam surface which is in contact with a driven member, an installation hole which is used for installing a rotating shaft is arranged on the cam body, a first curved surface is in smooth connection with a second curved surface to assemble the cam surface, and the second curved surface is provided with a groove which is used for breaking chips. When the driven member passes through the groove, an original motion trail of the driven member is changed, the lift feed is stopped, then feed movement of a cutter is stopped, i.e., cutting of workpieces, is stopped, continuous lift feed movement is divided into more than two sections of jog type lift feed, metal chips produced in a processing process can be broken and discharged by the cutter due to the fact that workpieces and the cutter rotate opposite, and chips are broken and discharged.

Description

Cam

Technical field

The utility model relates to the automatic lathe cutting machines, relates in particular to a kind of cam that is applied to cutting machines.

Background technique

Automatic lathe is a kind of high-performance, highi degree of accuracy; The feed formula automatic lathe of low noise is an automatic processing machine tool of controlling procedure through cam, and the structure of cam is as shown in Figure 1; Comprise mounting hole 1 and cam body 2 that rotating shaft is installed; Said cam is made continuous constant speed around said rotating shaft usually and is rotated, and gives the driven member 3 that moves near the surface of cam body 2 transmission of movement, thereby makes driven member 3 obtain the motion of certain rule.

At present; In 5 of all main flows or the 6 shaft automatic lathe course of working; The machine direction in hole is that level is to feeding mostly; And level is mainly moved to direction of feed and is relied on the lift feeding of cam, and the raw material bits are difficult for cutting off and getting rid of in boring procedure, and this will influence a series of problems such as interior hole dimension, bit life and manufacturing efficiency.

Therefore, how to provide a kind of and can solve the chip breaking in the cam feed process, the cam of chip removal problem is the technical problem that those skilled in the art need to be resolved hurrily.

The model utility content

The purpose of the utility model is to provide a kind of cam, to solve existing cam chip breaking in the feeding process, the difficult problem of chip removal.

For solving the problems of the technologies described above; The utility model provides a kind of cam; Comprise cam body with the camming surface that contacts with driven member; Said cam body is provided with the mounting hole that is used to install rotating shaft, and said camming surface is by first surface and second curved surface is smooth connects to form, and said second curved mask is useful on the groove of chip breaking.

Preferably, said groove is divided into rising edge and trailing edge, and smooth connection of an end of an end of said rising edge and said trailing edge, the other end of said rising edge is connected with said second curved surface with said smooth connection of second curved surface, the other end of said trailing edge.

Preferably, said first surface is the change radius curved surface that radius diminishes earlier and afterwards becomes big.

Preferably, said groove quantity is one or more.

Preferably, said driven member slides or rolls near said camming surface.

The cam that the utility model provides; Comprise cam body with the camming surface that contacts with driven member; Said cam body is provided with the mounting hole that is used to install rotating shaft, and said camming surface is by first surface and second curved surface is smooth connects to form, and said second curved mask is useful on the groove of chip breaking.Because said driven member moves near said camming surface, when the said groove of said driven member process, said driven member changes original movement locus; Stop the lift feeding, thereby stop the feed motion of cutter, promptly stop stock removal action workpiece; Continuous lift feed motion is divided into the some dynamic formula lift feeding more than two sections; And because the relative rotation of workpiece and cutter, the metal fillings that produces in the course of working can be cut off and eliminating by cutter, thereby realizes the purpose of chip breaking, chip removal.

Description of drawings

Fig. 1 is the structural representation of existing cam;

Fig. 2 is the structural representation of the utility model one embodiment's cam.

Embodiment

For above-mentioned purpose, the feature and advantage that make the utility model can be more obviously understandable, the embodiment of the utility model is done detailed explanation below in conjunction with accompanying drawing.

The cam that the utility model provides, as shown in Figure 2, comprise cam body with the camming surface that contacts with driven member 14; Said cam body is provided with the mounting hole 11 that is used to install rotating shaft, particularly, and the drilling tool link 16 that said driven member 14 is fixedly connected in the multiple spindle lathe; Said rotating shaft and reference circle (among the figure shown in the dotted line) are concentric, and said camming surface is by first surface 12 and second curved surface, 13 smooth connecting to form, particularly; The change radius curved surface that said first surface 12 diminishes earlier and afterwards becomes big for radius, the general trend of said second curved surface 13 is the change radius curved surface that radius reduces gradually, said driven member 14 moves near said camming surface; Particularly, said driven member 14 rotates with said camming surface relatively, can be that cam is around said rotating shaft 11 rotations; Said driven member 14 has only substantially horizontal movable; Also can be that said cam is fixed, said driven member 14 moves around said camming surface, drives said drilling tool link 16 and moves according to certain rules.Said second curved surface 13 has the groove 15 that is used for chip breaking.

Preferably; As shown in Figure 2, said groove 15 is divided into rising edge 151 and trailing edge 150, particularly; The side that said driven member 14 gets into said groove 15 is called trailing edge 150; The side that said driven member 14 leaves said groove 15 is called rising edge 151, the smooth connection of an end of an end of said rising edge 151 and said trailing edge 150, the other end of said rising edge 151 and said 13 smooth connections of second curved surface; The other end of said trailing edge 150 is connected with said second curved surface 13, in order to avoid the joint of said driven member said rising edge 151 of 14 contacts and said second curved surface 13 is because the excessive normal rotation that influences cam of frictional force.

Preferably, said groove 15 quantity are one or more.According to the hardness of operative workpiece, factors such as the distance adjustment of cam lift feeding.Adopt two grooves 15 in the present embodiment.

Preferably, said driven member 14 slides or rolls near said camming surface, can reach said driven member 14 and get final product with said camming surface relative movement.

In sum, the cam that the utility model provides is because said driven member 14 moves near said camming surface; When said driven member 14 during through said groove 15, said driven member 14 changes original movement locus, stops the lift feeding; Thereby stop the feed motion of cutter; Promptly stop stock removal action, continuous lift feed motion is divided into the some dynamic formula lift feeding more than two sections workpiece, and because the relative rotation of workpiece and cutter; The metal fillings that produces in the course of working can be cut off and eliminating by cutter, thereby realizes the purpose of chip breaking, chip removal.

Obviously, those skilled in the art can carry out various changes and modification to the utility model and not break away from the spirit and the scope of the utility model.Like this, belong within the scope of the utility model claim and equivalent technologies thereof if these of the utility model are revised with modification, then the utility model also is intended to comprise these changes and modification interior.

Claims

1. cam; Comprise the cam body with the camming surface that contacts with driven member, said cam body is provided with the mounting hole that is used to install rotating shaft, and said camming surface is by first surface and second curved surface is smooth connects to form; It is characterized in that said second curved mask is useful on the groove of chip breaking.

2. cam as claimed in claim 1; It is characterized in that; Said groove is divided into rising edge and trailing edge; The smooth connection of one end of one end of said rising edge and said trailing edge, the other end of said rising edge is connected with said second curved surface with said smooth connection of second curved surface, the other end of said trailing edge.

3. cam as claimed in claim 1 is characterized in that, said first surface is the change radius curved surface that radius diminishes earlier and afterwards becomes big.

4. cam as claimed in claim 1 is characterized in that, said groove quantity is one or more.

5. like any described cam in the claim 1～4, it is characterized in that said driven member slides or rolls near said camming surface.