CN202028781U

CN202028781U - Protecting device for start of horizontal lathe spindle

Info

Publication number: CN202028781U
Application number: CN2011200136075U
Authority: CN
Inventors: 束红; 吴瑛; 徐庆
Original assignee: MAANSHAN WANMA MACHINE BUILDING CO Ltd
Current assignee: MAANSHAN WANMA MACHINE BUILDING CO Ltd
Priority date: 2011-01-13
Filing date: 2011-01-13
Publication date: 2011-11-09
Anticipated expiration: 2021-01-13

Abstract

The utility model discloses a protecting device for start of a horizontal lathe spindle, which comprises a chuck wrench, a microswitch and a protecting box bracket, wherein the chuck wrench penetrates through a guide hole of the protecting box bracket; two end brackets of a wrench rod are positioned on the upper end surface of the protecting box bracket; the microswitch is arranged inside the protecting box bracket and is connected with the protecting box bracket through a fastener; and the bottom end of the chuck wrench is contacted with an extension arm of the microswitch and is just in press fit with the microswitch. A normally-opened contact in the protecting device is connected into an emergency stop circuit in a lathe control circuit in series; when the chuck wrench is inserted into protecting box bracket, the microswitch is in press in, an electrical circuit is connected and the spindle is started; and when the chuck wrench is taken out, the electrical circuit is broken off and the spindle cannot be started. Therefore, the protecting device can be used for protecting the spindle during starting conveniently and safely. Meanwhile, the protecting device can be arranged at any position which is easy to operate and convenient to wire.

Description

The protector that the horizontal lathe main shaft starts

Technical field

The utility model relates to the protector that the horizontal lathe main shaft starts.

Background technology

The scheme that the protection of horizontal lathe main shaft startup is at present generally adopted is to install the chuck protective cover above spindle chuck additional, as Fig. 4, shown in Figure 5: that connection support 7 is housed on the external diameter of back shaft 10 1 ends successively, cam 8, first hinge bracket 9, be equipped with on the external diameter of its other end second hinge bracket 9 ', support 7 is fixed on the end face of headstock, cam 8 is fastened on the end face of first hinge bracket 9, switch 13 is equipped with in its below, switch 13 is contained on the switch mount pad 14 that is connected with the headstock end face, hinge bracket 9,9 ' all are fixed on the inner face of protective cover 6.Drive cam 8 rotation pressed switch 13 by back shaft 10 when protective cover 6 starts, the switch of receiving on the main circuit for controlling motor 13 has been cut off main motor power after the pressing, main shaft is stopped operating.When closing protective cover 6, drive cam 8 rotation trip switch 13, connected main motor power, main shaft is rotated by back shaft 10.Because the part of this covering device is more, its reliability is relatively poor.Simultaneously, operation is extremely inconvenient, and the chuck protecting cover of will frequently throwing during clamping workpiece hinders chuck handle locking workpiece, efficient is low and parts have more existing fault and are unfavorable for maintenance.

The utility model content

Problem to be solved in the utility model provides the protector that a kind of main shaft starts, the protection when making it can realize the main shaft startup easy, safely.

The protector that the utility model horizontal lathe main shaft starts, it is characterized in that: it comprises chuck handle, microswitch, protection box support; Chuck handle passes from the pilot hole of protection box support, and the two ends frame of its tommy bar is on the upper surface of protection box support; Microswitch is placed on the inside of protection box support, and it links to each other with the protection box support by securing member; The bottom of chuck handle contacts with the extension arm of microswitch, and can just the pressing microswitch.

The normal urgency that seals in the Machine-Tool Control circuit of making war of microswitch in the utility model protector is stopped in the loop, and microswitch is connected by the pressing electric loop in chuck handle insertion protection box support, and main shaft starts; Electric loop disconnects when chuck handle is removed, and main shaft can not be activated.Protection when therefore, this device can be realized the main shaft startup easily and safely.Simultaneously, this device can be installed in optional position easy to operate, convenient for wiring.

Description of drawings

Fig. 1 is the structural representation of the utility model protector;

Fig. 2 is the cutaway view along A-A line among Fig. 1;

Fig. 3 is a circuit connection schematic diagram of the present utility model;

Fig. 4 is the structural representation of existing protector;

Fig. 5 is the cutaway view along B-B line among Fig. 4.

The specific embodiment

From Fig. 1, Fig. 2 as can be known, the protector that this novel horizontal lathe spindle starts, it comprises chuck handle 1, microswitch 2, protection box support 3; Chuck handle 1 passes from the pilot hole of protection box support 3, and the two ends frame of its tommy bar is on the upper surface of protection box support 3; Microswitch 2 is placed on the inside of protection box support 3, and it links to each other with protection box support 3 by securing member 5; The bottom of chuck handle 1 contacts with the extension arm of microswitch 2, and can just pressing microswitch 2.

In order to allow chuck handle 1 can effectively be pressed onto the extension arm of microswitch 2; the center line that makes the center line of microswitch 2 and chuck handle 1 is in same plane; can be provided with the cushion block 4 that is in contact with both between the rear board of protecting box support 3 and microswitch 2, microswitch 2, cushion block 4 link to each other with protection box support 3 by securing member 5.

When determining the installation site of microswitch 2 in protection box support 3, require chuck handle 1 to put into when protecting box support 3, the extension arm of its bottom end and microswitch 2 contacts and pressing microswitch 2 just.

As shown in Figure 3, fixing behind the microswitch 2 urgency that normal battle and common port with switch seal in lathe stops in the loop ground protection is received on the ground terminal.Suddenly stop the loop by relay K A, electrothermal relay protection contact FR1, FR2, scram button SB, fuse FU are composed in series.Microswitch 2 is by pressing when chuck handle 1 inserts protection box support 3, and the loop is often made war closed herein, and the loop is connected, and press lower main axis start button main shaft and can run well this moment.When taking chuck handle 1 away when the needs clamping workpiece, the loop will be disconnected herein, and lathe is in the anxious state that stops, and must not turn round by main shaft start button main shaft this moment again.Have only promptly that main shaft could start when chuck handle 1 is put back to 3 li microswitches 2 of protection box support by pressing, at this moment workpiece clamping finish, the startup main shaft can to external world people or thing not damage.So effectively protected operating personnel's personal safety, can on chuck, not start main shaft and injure life because of forgeing because of other people error starting main shaft or with chuck handle when the clamping workpiece.

This protector utilizes this machine tool component of chuck handle and microswitch, makes the main shaft of lathe start to have had than perfect control and protects.This utility model can be protected the lathe operation personnel, is particularly useful for the how disorder special circumstances of people from school, have easy to operate, the reliability height, practical, characteristics such as cost is low.

Claims

1. the protector that starts of horizontal lathe main shaft, it is characterized in that: it comprises chuck handle (1), microswitch (2), protection box support (3); Chuck handle (1) passes from the pilot hole of protection box support (3), and the two ends frame of its tommy bar is on the upper surface of protection box support (3); Microswitch (2) is placed on the inside of protection box support (3), and it links to each other with protection box support (3) by securing member (5); The bottom of chuck handle (1) contacts with the extension arm of microswitch (2), and can just pressing microswitch (2).

2. protector according to claim 1; it is characterized in that: be provided with the cushion block (4) that is in contact with both between the rear board of protecting box support (3) and microswitch (2), microswitch (2), cushion block (4) link to each other with protection box support (3) by securing member (5).