CN111922809A

CN111922809A - Automatic fixture equipment for eccentric shaft grinding of cylindrical grinding machine

Info

Publication number: CN111922809A
Application number: CN202010872990.3A
Authority: CN
Inventors: 吴军辉; 武建伟; 许方富; 金丽丽; 赵瑜; 王威
Original assignee: Research Institute of Zhejiang University Taizhou
Current assignee: Research Institute of Zhejiang University Taizhou
Priority date: 2020-08-26
Filing date: 2020-08-26
Publication date: 2020-11-13
Anticipated expiration: 2040-08-26
Also published as: CN111922809B

Abstract

The invention provides automatic fixture equipment for a grinding eccentric shaft of a cylindrical grinding machine, which comprises a grinding machine body, a fixture module, a positioning pin module and a locking module, wherein the grinding machine body is used as a carrier, a servo motor is installed at the left end of the grinding machine body and is in transmission connection with a power head main shaft, a grinding wheel is arranged on the right side of the power head main shaft, an outer diameter measuring instrument is arranged in front of the grinding wheel, the fixture module is installed on the power head main shaft, and the positioning pin module is installed in front of the fixture module. Through designing a can automatic clamping eccentric shaft work piece anchor clamps for eccentric shaft work piece has accurate positioning and follows the rotatory characteristics of eccentric shaft when pressing from both sides tight man-hour, supplies the grinding machine emery wheel to evenly process the eccentric shaft, reaches higher excircle machining precision, has the processingquality height, and is efficient, reliable and stable's advantage.

Description

Automatic fixture equipment for eccentric shaft grinding of cylindrical grinding machine

Technical Field

The invention discloses automatic fixture equipment for grinding an eccentric shaft of a cylindrical grinding machine, and belongs to the field of eccentric shaft machining equipment.

Background

The workpiece with the excircle parallel to the axis of the excircle and not coincident with the axis of the excircle is called an eccentric shaft. The eccentric shaft is usually fixed on the rotating shaft of the motor through an eccentric hole, and when the motor is started, the eccentric shaft makes a cam motion. Therefore, the composite material is widely applied to automobiles, engines, pumps and the like.

The shaft piece processing will be processed at the grinding machine under the rotation state, and eccentric shaft eccentric section excircle axis is parallel and do not coincide with whole excircle axis, if directly carry out the grinding machine processing with chuck fixture clamping, eccentric motion is to eccentric shaft section, can't carry out even accurate processing, can't guarantee eccentric shaft excircle precision, is difficult to reach the quality requirement of product.

Disclosure of Invention

Aiming at the defects in the prior art, the invention aims to provide automatic fixture equipment for a grinding eccentric shaft of a cylindrical grinding machine, so as to solve the problems in the background technology.

In order to achieve the purpose, the invention is realized by the following technical scheme: the utility model provides a cylindrical grinder's eccentric axle of grinding automatic fixture equipment, includes grinding machine body, anchor clamps module, locating pin module and locking module, the grinding machine body is as the carrier, servo motor is installed to grinding machine body left end, servo motor is connected with unit head spindle drive, the right-hand emery wheel that is provided with of unit head main shaft, the place ahead of emery wheel is provided with the external diameter measuring apparatu, anchor clamps module is installed on the unit head main shaft, the place ahead at anchor clamps module is installed to the locating pin module, locking module installs right-hand at the locating pin module, anchor clamps module comprises anchor clamps installation piece, anchor clamps orientation piece, anchor clamps balancing weight, anchor clamps locking thread bush, anchor clamps eccentric block, eccentric shaft work piece, shift fork, torsional spring, locating pin and locking screw, the locating pin module is by first cylinder that compresses tightly, first compression spring, first, The second compresses tightly cylinder, second compression spring and second pressure head and constitutes, locking module comprises slope installing support, torsion motor, reduction gear, telescopic cylinder, universal joint, extension spring, slider, guide rail and plum blossom sleeve.

Further, the left end at the anchor clamps module is established to the anchor clamps installation piece, the directional piece of anchor clamps is installed to the front end of anchor clamps installation piece, install the shift fork on the directional piece of anchor clamps, the torsional spring is installed to shift fork and the directional piece centre of anchor clamps, the locating pin is installed to the right-hand member of shift fork, the right-hand anchor clamps locking thread bush of installing of the directional piece of anchor clamps, install locking screw on the anchor clamps locking thread bush, the anchor clamps balancing weight is installed to the rear end of anchor clamps installation piece, the inside anchor clamps eccentric block that installs of anchor clamps installation piece, eccentric shaft work piece centre gripping is inside the anchor clamps installation piece.

Furthermore, a first compression head is fixedly mounted on a piston rod of the first compression cylinder, a first compression spring is sleeved on the first compression head, a second compression head is fixedly mounted on a piston rod of the second compression cylinder, and a second compression spring is sleeved on the second compression head.

Further, fixed mounting has the reduction gear on the motor that twists reverse, reduction gear fixed mounting is on the slope installing support, the reduction gear is in the same place with universal joint fixed connection, install telescopic cylinder on the slope installing support, telescopic cylinder is located the universal joint below, be equipped with the guide rail on the slope installing support, install the slider on the guide rail, slider and telescopic cylinder's piston rod fixed connection, install extension spring between slider and the slope installing support, plum blossom sleeve fixed mounting is at the right-hand member of slider.

Furthermore, a pin hole is formed in the left end of the eccentric shaft workpiece, and a pin hole is formed in the right end of the eccentric shaft workpiece.

The invention has the beneficial effects that: according to the automatic fixture equipment for the eccentric shaft grinding of the cylindrical grinding machine, which is disclosed by the invention, by designing the fixture capable of automatically clamping the eccentric shaft workpiece, the eccentric shaft workpiece has the characteristics of accurate positioning and rotation along the eccentric shaft when being clamped and machined, so that the grinding wheel of the grinding machine can uniformly machine the eccentric shaft, higher cylindrical machining precision is achieved, and the automatic fixture equipment has the advantages of high machining quality, high efficiency, stability and reliability.

Drawings

Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:

FIG. 1 is a schematic structural view of an automatic fixture apparatus for an eccentric shaft of a cylindrical grinding machine according to the present invention;

FIG. 2 is a schematic diagram of an eccentric shaft workpiece of the automatic fixture device for grinding an eccentric shaft of a cylindrical grinding machine according to the present invention;

FIG. 3 is a schematic structural diagram of a grinding machine body of an automatic fixture device for an eccentric shaft of a cylindrical grinding machine according to the present invention;

FIG. 4 is a schematic structural diagram of a clamp module of the automatic fixture device for the eccentric shaft grinding of the cylindrical grinding machine according to the present invention;

FIG. 5 is a schematic structural diagram of a positioning pin module of the automatic fixture device for eccentric shaft grinding of the cylindrical grinding machine according to the present invention;

FIG. 6 is a schematic structural diagram of a locking module of the automatic fixture device for the eccentric shaft of the cylindrical grinding machine according to the invention;

in the figure: 1-grinding machine body, 2-clamp module, 3-positioning pin module, 4-locking module, 11-servo motor, 12-power head main shaft, 13-grinding wheel, 14-outer diameter measuring instrument, 21-clamp mounting block, 22-clamp orientation block, 23-clamp balancing weight, 24-clamp locking thread sleeve, 25-clamp eccentric block, 26-eccentric shaft workpiece, 27-shifting fork, 28-torsion spring, 29-positioning pin, 210-locking screw, 31-first pressing cylinder, 32-first compression spring, 33-first pressing head, 34-second pressing cylinder, 35-second compression spring, 36-second pressing head, 41-inclined mounting bracket, 42-torsion motor, 43-speed reducer, and, 44-telescopic cylinder, 45-universal joint, 46-extension spring, 47-slide block, 48-guide rail and 49-plum blossom sleeve.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.

Referring to fig. 1 to 6, the present invention provides a technical solution: an automatic fixture device for an eccentric shaft of a cylindrical grinding machine comprises a grinding machine body 1, a fixture module 2, a positioning pin module 3 and a locking module 4, wherein the grinding machine body 1 is used as a carrier, a servo motor 11 is installed at the left end of the grinding machine body 1, the servo motor 11 is in transmission connection with a power head spindle 12, a grinding wheel 13 is arranged on the right side of the power head spindle 12, an outer diameter measuring instrument 14 is arranged in front of the grinding wheel 13, the fixture module 2 is installed on the power head spindle 12, the positioning pin module 3 is installed in front of the fixture module 2, the locking module 4 is installed on the right side of the positioning pin module 3, the fixture module 2 is composed of a fixture installing block 21, a fixture orienting block 22, a fixture balancing weight 23, a fixture locking thread sleeve 24, a fixture eccentric block 25, an eccentric shaft workpiece 26, a shifting fork 27, a torsion spring, The locking module 4 comprises a first compression spring 32, a first pressing head 33, a second pressing cylinder 34, a second compression spring 35 and a second pressing head 36, and the locking module 4 comprises an inclined mounting bracket 41, a torsion motor 42, a speed reducer 43, a telescopic cylinder 44, a universal joint 45, an extension spring 46, a sliding block 47, a guide rail 48 and a plum blossom shaped sleeve 49.

The left end at anchor clamps module 2 is established to anchor clamps installation piece 21, the directional piece 22 of anchor clamps is installed to the front end of anchor clamps installation piece 21, install shift fork 27 on the directional piece 22 of anchor clamps, install torsional spring 28 in the middle of shift fork 27 and the directional piece 22 of anchor clamps, locating pin 29 is installed to the right-hand member of shift fork 27, anchor clamps locking thread bush 24 is installed to the directional piece 22 of anchor clamps, install locking screw 210 on the anchor clamps locking thread bush 24, anchor clamps balancing weight 23 is installed to the rear end of anchor clamps installation piece 21, anchor clamps installation piece 21 internally mounted has anchor clamps eccentric block 25, eccentric shaft work piece 26 centre gripping is inside anchor clamps installation piece 21 for press from both sides tight.

A first pressing head 33 is fixedly mounted on a piston rod of the first pressing cylinder 31, a first compression spring 32 is sleeved on the first pressing head 33, a second pressing head 36 is fixedly mounted on a piston rod of the second pressing cylinder 34, and a second compression spring 35 is sleeved on the second pressing head 36 and used for pressing the positioning pin 29 and pulling out the positioning pin 29.

Torsion motor 42 is last fixed mounting has reduction gear 43, reduction gear 43 fixed mounting is on slope installing support 41, reduction gear 43 and universal joint 45 fixed connection together, install telescopic cylinder 44 on the slope installing support 41, telescopic cylinder 44 is located universal joint 45 below, be equipped with guide rail 48 on the slope installing support 41, install slider 47 on the guide rail 48, slider 47 and telescopic cylinder 44's piston rod fixed connection, install extension spring 46 between slider 47 and the slope installing support 41, plum blossom sleeve 49 fixed mounting is at the right-hand member of slider 47, be used for locking eccentric shaft work piece 26, prevent to produce the skew in the course of working and rock.

The eccentric shaft workpiece 26 has a pin hole formed in the left end thereof, and the eccentric shaft workpiece 26 has a pin hole formed in the right end thereof for positioning by the positioning pin 29.

As an embodiment of the present invention: in practical use, an eccentric shaft workpiece 26 is placed into a fixture eccentric block 25, a positioning pin 29 is driven into a pin hole at the end part of the eccentric shaft workpiece 26 to be positioned under the action of a positioning pin module 3, a first pressing cylinder 31 is ventilated, a cylinder push rod extends out to drive a first pressing head 33 to press the positioning pin 29, then the first pressing cylinder 31 stops ventilating, under the action of a first compression spring 32, the first pressing head 33 returns, a locking screw 210 is screwed and fixed on the eccentric shaft workpiece 26 under the action of a locking module 4, a telescopic cylinder 44 is ventilated, the cylinder push rod extends out to push a slide block 47 along a guide rail 48, a plum blossom sleeve 49 is sleeved in the locking screw 210, a torsion motor 42 is started, a speed reducer 43 is matched to drive a plum blossom sleeve 49 to rotate through a universal joint 45, the locking screw 210 is screwed, the telescopic cylinder 44 stops ventilating, under the action of a tension spring 46, the plum blossom sleeve 49 returns, and then a servo motor, the clamp module 2 is driven to rotate, and the grinding wheel 13 processes the eccentric section of the eccentric shaft workpiece 26;

after the processing is finished, the locking screw 210 is screwed back under the action of the locking module 4, the plum blossom sleeve 49 is sleeved into the locking screw 210 again under the action of the telescopic cylinder 44, the torsion motor 42 rotates reversely, the locking screw 210 is screwed back to loosen the workpiece, the shifting fork 27 presses down and lifts the positioning pin 29 under the action of the positioning pin module 3, the second pressing cylinder 34 is ventilated, the cylinder push rod extends out to drive the second pressing head 36 to press the shifting fork 27, the positioning pin 29 is pulled out, the workpiece is taken down, the next workpiece is loaded, the second pressing cylinder 34 stops ventilating, and the second pressing head 36 returns under the action of the second compression spring 35.

Although the present invention has been described with reference to a preferred embodiment, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims

1. The utility model provides a cylindrical grinder's eccentric shaft automatic clamp equipment that grinds, includes grinding machine body, anchor clamps module, locating pin module and locking module, its characterized in that: the grinding machine body is used as a carrier, a servo motor is installed at the left end of the grinding machine body and is in transmission connection with a power head spindle, a grinding wheel is arranged on the right side of the power head spindle, an outer diameter measuring instrument is arranged in front of the grinding wheel, a clamp module is installed on the power head spindle, a positioning pin module is installed in front of the clamp module, a locking module is installed on the right side of the positioning pin module, the clamp module is composed of a clamp installation block, a clamp orientation block, a clamp balancing weight, a clamp locking thread sleeve, a clamp eccentric block, an eccentric shaft workpiece, a shifting fork, a torsion spring, a positioning pin and a locking screw rod, the positioning pin module is composed of a first pressing cylinder, a first compression spring, a first pressing head, a second pressing cylinder, a second compression spring and a second pressing head, and the locking module is composed, The speed reducer, the telescopic cylinder, the universal joint, the extension spring, the sliding block, the guide rail and the plum blossom sleeve.

2. The automatic fixture device for the eccentric shaft of the cylindrical grinding machine according to claim 1, characterized in that: the left end at the anchor clamps module is established to the anchor clamps installation piece, the directional piece of anchor clamps is installed to the front end of anchor clamps installation piece, install the shift fork on the directional piece of anchor clamps, the torsional spring is installed to shift fork and the directional piece middle of anchor clamps, the locating pin is installed to the right-hand member of shift fork, the right-hand anchor clamps locking thread bush of installing of the directional piece of anchor clamps, install locking screw on the anchor clamps locking thread bush, the anchor clamps balancing weight is installed to the rear end of anchor clamps installation piece, the inside anchor clamps eccentric block that installs of anchor clamps installation piece, eccentric shaft work piece centre gripping is inside the anchor clamps.

3. The automatic fixture device for the eccentric shaft of the cylindrical grinding machine according to claim 1, characterized in that: the piston rod of the first pressing cylinder is fixedly provided with a first pressing head, the first pressing head is sleeved with a first compression spring, the piston rod of the second pressing cylinder is fixedly provided with a second pressing head, and the second pressing head is sleeved with a second compression spring.

4. The automatic fixture device for the eccentric shaft of the cylindrical grinding machine according to claim 1, characterized in that: the torsion motor is fixedly provided with a speed reducer, the speed reducer is fixedly installed on an inclined installation support, the speed reducer is fixedly connected with a universal joint, an expansion cylinder is installed on the inclined installation support, the expansion cylinder is located below the universal joint, a guide rail is arranged on the inclined installation support, a sliding block is installed on the guide rail, the sliding block is fixedly connected with a piston rod of the expansion cylinder, an extension spring is installed between the sliding block and the inclined installation support, and a plum blossom sleeve is fixedly installed at the right end of the sliding block.

5. The automatic fixture device for the eccentric shaft of the cylindrical grinding machine according to claim 1, characterized in that: the left end of the eccentric shaft workpiece is provided with a pin hole, and the right end of the eccentric shaft workpiece is provided with a pin hole.