CN201979347U

CN201979347U - Indexing and positioning mechanism for multi-station machine tool

Info

Publication number: CN201979347U
Application number: CN2011200864759U
Authority: CN
Inventors: 张玉飞; 陈国昌; 夏小帅; 顾玉香
Original assignee: ZHANGJIAGANG YUCHENG PRECISION MACHINE CO Ltd
Current assignee: ZHANGJIAGANG YUCHENG MACHINE CO., LTD.
Priority date: 2011-03-29
Filing date: 2011-03-29
Publication date: 2011-09-21
Anticipated expiration: 2021-03-29

Abstract

The utility model discloses an indexing and positioning mechanism for a multi-station machine tool, which comprises a first gear socketed on the outer circular surface of a swivel table provided with a vertical inner cavity, a second gear meshed with the first gear to drive the swivel table to swivel, positioning holes uniformly formed on the circumferential direction of the bottom of the swivel table, a first hydraulic cylinder and a second hydraulic cylinder which are arranged at the top of a base seat, and a compressing mechanism connected with the second hydraulic cylinder, wherein the piston rod of the first hydraulic cylinder is matched with the positioning holes, the compressing mechanism comprises a compressing block and a support rod, a concave ring is arranged at the lower part of the inner cavity in the circumferential direction, the piston rod of the second hydraulic cylinder pushes the compressing block when extending out upward, and the compressing block is tightly compressed on the lower side wall of the concave ring under the guiding function of the support rod, therefore, the positioning of the multi-station machine tool is more stable, and the workpiece processing accuracy is higher.

Description

A kind of dividing and positioning mechanism of multi-station machine tool

Technical field

The utility model relates to the dividing and positioning mechanism of multi-station machine tool

Background technology

Existing multi-station machine tool, adopt the indexing mechanism of machinery or numerical control that displacement is carried out calibration, the lathe revolution that drive mechanism is carried workpiece secretly stopped to drive after moving a fixed angle, and lathe rests on this position, and workpiece is accepted processing, the process finishing rear drive mechanism continues to drive lathe and rotates, so circulation, lathe itself has the inertia of motion like this, and workpiece has force transmission to lathe when processed, cause machine tool position to be offset easily, the precision of influence processing

Summary of the invention

But the purpose of this utility model provides the dividing and positioning mechanism that but the calibration stable position is provided, improves the multi-station machine tool of workpiece machining accuracy.

For achieving the above object, the technical solution adopted in the utility model is: a kind of dividing and positioning mechanism of multi-station machine tool, described multi-station machine tool comprises passive base, the top that is horizontally set on the described base has from down to up the chassis of the tapered opening of expansion gradually, the bottom has the rotary table that has the inner chamber of vertical direction on the described chassis that is horizontally set on of the tapered protrusion that is complementary with described tapered opening, described indexing mechanism comprises that level is set in first gear on the described rotary table periphery, be horizontally set on second gear in the outside, described rotary table bottom, be arranged on first hydraulic cylinder that is fixedly connected on described base top of described rotary table below, be arranged on the hold-down mechanism in the described rotary table inner chamber, be arranged on second hydraulic cylinder of the described hold-down mechanism of connection of described base top, described first gear is meshed with described second gear, the scrobicular ring of circumferential direction is set in the bottom of described rotary table inner chamber, the scrobicular ring of described circumferential direction has the lower wall that can compacted mechanism compresses, be provided with along the equally distributed locating hole of circumferential direction in described rotary table bottom, the piston rod of described first hydraulic cylinder and described locating hole shape are complementary.

Preferably, described hold-down mechanism comprises that the briquetting that can be pressed on the described scrobicular ring lower wall, bootable described briquetting are pressed in the pole of described scrobicular ring lower wall downwards, the root of described briquetting connects the piston rod of described second hydraulic cylinder, one end of described pole is connected on described second hydraulic cylinder, and the other end connects the middle part of described briquetting.

Because the utilization of technique scheme, the utility model compared with prior art has following advantage: first gear that is set on the rotary table outer circumference surface is set, second gear that is used to drive the rotary table rotation that is meshed with first gear is set, the equally distributed locating hole that is used to locate that can be stretched into by rod member along the circumferential direction is set in the bottom of rotary table, the scrobicular ring of circumferential direction is set in the inner chamber bottom of rotary table, setting can compress the hold-down mechanism of scrobicular ring lower wall, after rotary table turns over a fixed angle like this, but stable position, the machining accuracy of raising workpiece.

Description of drawings

Accompanying drawing 1 is looked schematic diagram for master of the present utility model.

The specific embodiment

Further set forth structure of the present utility model below in conjunction with accompanying drawing.

Referring to shown in Figure 1, multi-station machine tool comprises passive base 3, the chassis 2 that the top has the tapered opening that enlarges gradually from down to up is set on base 3, rotary table 1 bottom has the tapered protrusion that the tapered opening with chassis 2 is complementary, tapered protrusion is inserted in the tapered opening, contact-making surface between the two adopts high-abrasive material to make, but the anchor clamps of holding workpiece are set evenly along circumferential direction at rotary table 1 top, during multi-station machine tool work, rotary table 1 rotates on chassis 2, the drive anchor clamps rotate, and finish the processing of workpiece.

In Fig. 1, sheathed first gear 4 on rotary table 1 outer circumference surface, setting is positioned at second gear 5 of the outside, rotary table 1 bottom and 4 engagements of first gear, during the rotation of second gear 5, can drive rotary table 1 by first gear 4 rotates, be provided with along the equally distributed locating hole of circumferential direction as 8 in rotary table 1 bottom, first hydraulic cylinder 6 that is fixedly connected on base 3 tops is set below rotary table 1, the piston rod 7 of first hydraulic cylinder 6 and locating hole are complementary as 8 shape, after rotary table 1 turns over a fixing angle and stops, piston rod 7 reaches locating hole as in 8, good positioning action has been played in processing to workpiece, on rotary table 1, offer the inner chamber of vertical direction, the scrobicular ring 13 of circumferential direction is set in the inner chamber bottom, be connected second hydraulic cylinder 9 and the hold-down mechanism that can compress scrobicular ring 13 lower wall at base 3 tops in the setting of rotary table inner chamber, hold-down mechanism has comprised the briquetting 11 and the pole 12 that briquetting 11 is play the guiding role of pressuring action, the telescopic piston rod 10 of second hydraulic cylinder 9 is connected the root of briquetting 11, one end of pole 12 is connected on second hydraulic cylinder 9, the other end is connected the middle part of briquetting 11, piston rod 10, briquetting 11, pole 12 is formed a lever system, when rotary table 1 stops, piston rod 7 reaches locating hole as after in 8, piston rod 10 protrudes upward, briquetting 11 is pressed in the lower wall place of scrobicular ring 13 under the guide effect of pole 12, played the effect of assist location, make the location of multi-station machine tool more stable, the workpiece machining accuracy is higher

Claims

1. the dividing and positioning mechanism of a multi-station machine tool, described multi-station machine tool comprises passive base, the top that is horizontally set on the described base has from down to up the chassis of the tapered opening of expansion gradually, the bottom has the rotary table that has the inner chamber of vertical direction on the described chassis that is horizontally set on of the tapered protrusion that is complementary with described tapered opening, it is characterized in that: described indexing mechanism comprises that level is set in first gear on the described rotary table periphery, be horizontally set on second gear in the outside, described rotary table bottom, be arranged on first hydraulic cylinder that is fixedly connected on described base top of described rotary table below, be arranged on the hold-down mechanism in the described rotary table inner chamber, be arranged on second hydraulic cylinder of the described hold-down mechanism of connection of described base top, described first gear is meshed with described second gear, the scrobicular ring of circumferential direction is set in the bottom of described rotary table inner chamber, the scrobicular ring of described circumferential direction has the lower wall that can compacted mechanism compresses, be provided with along the equally distributed locating hole of circumferential direction in described rotary table bottom, the piston rod of described first hydraulic cylinder and described locating hole shape are complementary.

2. the dividing and positioning mechanism of multi-station machine tool according to claim 1, it is characterized in that: described hold-down mechanism comprises that the briquetting that can be pressed on the described scrobicular ring lower wall, bootable described briquetting are pressed in the pole of described scrobicular ring lower wall downwards, the root of described briquetting connects the piston rod of described second hydraulic cylinder, one end of described pole is connected on described second hydraulic cylinder, and the other end connects the middle part of described briquetting.