CN218556464U

CN218556464U - Pay-off positioning mechanism of centerless grinder machined part

Info

Publication number: CN218556464U
Application number: CN202223049258.XU
Authority: CN
Inventors: 朱德华; 林孝偉; 葛庆荣
Original assignee: Dongguan Yinsenda Intelligent Technology Co ltd
Current assignee: Dongguan Yinsenda Intelligent Technology Co ltd
Priority date: 2022-11-15
Filing date: 2022-11-15
Publication date: 2023-03-03
Anticipated expiration: 2032-11-15

Abstract

The utility model discloses a feeding and positioning mechanism of a centerless grinder workpiece, which is used in cooperation with a grinder body and comprises a fixed seat, a linear module, an electromagnet, a mounting rack and a buffer device; the linear module is fixed on the fixed seat; the mounting frame is connected with the sliding block of the linear module; the electromagnet is arranged on the mounting rack through a connecting rod of which the tail end is provided with a limiting plate; the buffer device comprises a first spring and a second spring which are respectively sleeved on the connecting rod; the front end and the rear end of the first spring are respectively connected with the electromagnet and the mounting rack; the front end and the rear end of the second spring are respectively connected with the mounting frame and the limiting plate; the linear module is used for driving the electromagnet to move back and forth. The utility model discloses a set up one and can be to the buffer of electro-magnet effect for the fixed work piece of electro-magnet adds man-hour and can provide the cushion effect for the work piece, is elastic contact between work piece and the grinding machine body promptly, thereby can let the work piece processing rear surface can be more slick and sly.

Description

Feeding and positioning mechanism for centerless grinding machine workpiece

Technical Field

The utility model relates to a centerless grinder technical field specifically is a pay-off positioning mechanism who relates to a centerless grinder machined part.

Background

A centerless grinding machine is a grinding machine for grinding without adopting the axis positioning of a workpiece, and mainly comprises a grinding machine body and a feeding mechanism, wherein the grinding machine body comprises a grinding wheel and an adjusting wheel, and the feeding mechanism is used for conveying the workpiece to the grinding machine body for processing. For example, the publication number CN216179020U discloses a centerless grinder for magnetic steel production with an automatic feeding function, which specifically discloses a centerless grinder for magnetic steel production with an automatic feeding function, and comprises a fixed base, and is characterized in that U-shaped frames are installed on two sides of the upper end of the fixed base, a limiting frame is installed on the rear side of the upper end of the U-shaped frame, a guide block is slidably arranged between the limiting frame and the U-shaped frame, the guide block is provided with a rotating shaft in a front-back cross-connection manner, the front end of the rotating shaft is provided with the guide frame, a fixed frame is fixedly connected between the guide frame and the upper end of the guide block, a lifting gear is installed on the rotating shaft in the guide frame, a lifting frame is engaged on the outer side of the lifting gear, a clamping mechanism is installed at the bottom of the lifting frame, a walking gear is also installed on the rotating shaft between the guide frame and the guide block, a fixed rack arranged on the top of the U-shaped frame is engaged on the outer side of the walking gear, and a grinder body is also installed on the fixed base; the clamping mechanism adopts a mechanical arm or an electromagnet.

Although the above centerless grinding machine has certain advantages, when the clamping mechanism is used for fixing a workpiece to be machined, since the grinding wheel and the adjusting wheel of the grinding machine body have external force to act on the workpiece when the workpiece is machined, the feeding mechanism is not provided with the buffer device, no buffer force is provided for buffer action after the workpiece is contacted with the grinding machine body, that is, the workpiece is in direct hard contact with the grinding machine body, and the machined surface of the workpiece is not smooth enough.

SUMMERY OF THE UTILITY MODEL

To the problem that prior art exists above, the utility model aims at providing a pay-off positioning mechanism of centerless grinder machined part, it can provide the cushion effect for the work piece through setting up a buffer that can be used to the electro-magnet for the fixed work piece of electro-magnet adds man-hour, is elastic contact between work piece and the grinding machine body promptly, thereby can let the work piece processing rear surface can be more slick and sly.

In order to realize the purpose, the technical scheme of the utility model is that:

a feeding and positioning mechanism for a centerless grinder workpiece is used in cooperation with a grinder body and comprises a fixed seat, a linear module, an electromagnet, a mounting frame and a buffer device; the linear module is fixed on the fixed seat; the mounting rack is connected with the sliding block of the linear module; the electromagnet is arranged on the mounting rack through a connecting rod of which the tail end is provided with a limiting plate; the buffer device comprises a first spring and a second spring which are respectively sleeved on the connecting rod; the front end and the rear end of the first spring are respectively connected with the electromagnet and the mounting rack; the front end and the rear end of the second spring are respectively connected with the mounting rack and the limiting plate; the linear module is used for driving the electromagnet to move back and forth.

For the additional structure of the above technical scheme, the following scheme is also included:

as a specific implementation manner, the device further comprises an adjusting component which can be used for adjusting the electromagnet to move along the up, down, left or right direction, and the mounting rack is connected with the slide block of the linear module through the adjusting component; the adjusting component consists of a left adjusting component, a right adjusting component and an upper adjusting component and a lower adjusting component; the left-right adjusting component is connected with a sliding block of the linear module; the upper and lower adjusting components are connected with the left and right adjusting components, and the mounting rack is connected to the upper and lower adjusting components.

As a specific implementation mode, the left-right adjusting component comprises a left-right adjusting guide rail, a left-right adjusting slide block and a left-right adjusting locking piece; the left and right adjusting guide rails are connected to the sliding blocks of the linear module; the rear side of the left-right adjusting slide block is connected to the left-right adjusting guide rail in a left-right moving manner, and the front side of the left-right adjusting slide block is connected with the up-down adjusting assembly; the left and right adjusting locking piece is connected with the left and right adjusting guide rail and can be used for locking the left and right adjusting sliding block.

As a specific implementation manner, a left and right adjusting clamping groove is arranged at the front side of the left and right adjusting guide rail, and the left and right adjusting clamping groove is of a structure with a narrow outer part and a wide inner part; the rear side of the left-right adjusting sliding block is provided with a left-right adjusting clamping block which is correspondingly inserted in the left-right adjusting clamping groove, and the left-right adjusting clamping block is correspondingly of a structure with wide outside and narrow inside.

As a specific implementation mode, a left and right adjusting extending groove with a width smaller than that of the left and right adjusting clamping groove extends on the inner side of the left and right adjusting clamping groove; and a left and right adjusting extension block which can be inserted into the left and right adjusting extension groove in a matched manner is also extended from the outer end of the left and right adjusting clamping block.

As a specific implementation mode, the up-and-down adjusting assembly comprises an up-and-down adjusting guide rail, an up-and-down adjusting slide block and an up-and-down adjusting locking piece; the up-down adjusting guide rail is connected to the left-right adjusting component; the rear side of the up-and-down adjusting slide block is connected to the up-and-down adjusting guide rail in a vertically movable manner, and the front side of the up-and-down adjusting slide block is connected with the mounting rack; the up-down adjusting locking piece is connected with the up-down adjusting guide rail and can be used for locking the up-down adjusting sliding block.

As a specific implementation manner, an upper and lower adjusting clamping groove is arranged at the front side of the upper and lower adjusting guide rail, and the upper and lower adjusting clamping groove is of a structure with a narrow outer part and a wide inner part; an up-and-down adjusting clamping block which is correspondingly inserted in the up-and-down adjusting clamping groove is arranged at the rear side of the up-and-down adjusting sliding block, and the up-and-down adjusting clamping block is correspondingly of a structure with wide outside and narrow inside.

As a specific implementation manner, an up-down adjusting extending groove with a width smaller than that of the up-down adjusting clamping groove extends on the inner side of the up-down adjusting clamping groove; an up-and-down adjusting extension block which can be inserted into the up-and-down adjusting extension groove in a matched manner is also extended from the outer end of the up-and-down adjusting fixture block.

As a specific implementation manner, the rear end of the first spring is connected to the first baffle of the mounting frame, and the front end of the second spring is connected to the second baffle of the mounting frame.

In a specific embodiment, a positioning shaft is further disposed on the front end surface of the electromagnet.

The beneficial effects of the utility model are that:

(one) the utility model discloses a set up buffer and can let add man-hour behind the fixed work piece of electro-magnet, sharp module drive work piece is forward or backward movement, because the work piece can be with the grinding wheel and the adjusting wheel contact of grinding machine body, therefore, just can let the work piece have certain elasticity of stretching out and drawing back after setting up first spring and second spring, first spring and second spring make and be elastic contact between work piece and the grinding machine body for the work piece provides the cushion effect promptly, thereby make work piece processing rear surface more slick and sly, and then avoided being direct hard contact between work piece and the grinding machine body and influenced the processingquality of work piece.

(II) the utility model discloses a set up the position that adjusting part can conveniently adjust the electro-magnet, so that the utility model discloses can be applicable to the work piece use of not unidimensional or model.

(III) the utility model discloses a set up sharp module and can drive the work piece steadily and realize feeding, and the staff can set up the speed of feeding and the number of times of making a round trip to feed as required.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

fig. 2 is a partial structural diagram of the first embodiment of the present invention;

fig. 3 is a schematic view of a partial structure of the present invention.

Reference numerals:

1. a fixed seat; 2. a linear module; 3. an electromagnet; 31. positioning the shaft; 4. a mounting frame; 41. a first baffle plate; 42. a second baffle; 5. an adjustment assembly; 51. adjusting the guide rail left and right; 511. the clamping groove is adjusted left and right; 512. the extension groove is adjusted left and right; 52. a left and right adjusting slide block; 521. a clamping block is adjusted left and right; 522. a left-right adjustment extension block; 53. the locking piece is adjusted left and right; 54. adjusting the guide rail up and down; 541. the clamping groove is adjusted up and down; 542. adjusting the extension groove up and down; 55. a slide block is adjusted up and down; 551. adjusting the clamping block up and down; 552. adjusting the extension block up and down; 56. adjusting the locking piece up and down; 6. a connecting rod; 7. a first spring; 8. a limiting plate; 9. a second spring; 10. and (5) a workpiece.

Detailed Description

The invention will be further described with reference to the drawings and the following detailed description, which are given by way of illustration only and do not limit the scope of the invention.

As shown in fig. 1-3, a feeding and positioning mechanism for workpieces of a centerless grinder, which is used in cooperation with a grinder body (not shown in the figure), includes a fixing base 1, a linear module 2, an electromagnet 3, a mounting frame 4 and a buffer device; the linear module 2 is fixed on the fixed seat 1; the mounting frame 4 is connected with the slide block of the linear module 2; the electromagnet 3 is arranged on the mounting frame 4 through a connecting rod 6 of which the tail end is provided with a limiting plate 8; the buffer device comprises a first spring 7 and a second spring 9 which are respectively sleeved on the connecting rod 6; the front end and the rear end of the first spring 7 are respectively connected with the electromagnet 3 and the mounting rack 4; the front end and the rear end of the second spring 9 are respectively connected with the mounting frame 4 and the limiting plate 8; the linear module 2 is used for driving the electromagnet 3 to move back and forth. The electromagnet 3 can be used for fixing the workpiece 10; the linear module 2 can be used for driving the workpiece 10 to move back and forth, so that feeding processing is conveniently realized; the function of the damping device is to provide a damping force for the workpiece 10 during processing.

The device also comprises an adjusting component which can be used for adjusting the electromagnet 3 to move along the up, down, left or right direction, and the mounting rack 4 is connected with the slide block of the linear module 2 through the adjusting component; specifically, the adjusting component consists of a left-right adjusting component and an up-down adjusting component; the left and right adjusting components are connected with the sliding block of the linear module 2; the upper and lower adjusting components are connected with the left and right adjusting components, and the mounting rack 4 is connected with the upper and lower adjusting components. Through setting up the adjusting part so that the utility model discloses a pay-off positioning mechanism can be applicable to the work piece of different sizes or model and use, for example the work piece can be the cylinder of different diameters.

Preferably, a positioning shaft 31 is arranged on the front end face of the electromagnet 3, and specifically, the positioning shaft 31 is arranged in the center of the front end face of the electromagnet 3; in order to make the positioning shaft 31 more easily inserted into the insertion hole of the workpiece 10, the front end of the positioning shaft 31 is tapered, so that the positioning shaft 31 having the tapered front end can be inserted into the insertion hole of the workpiece 10 more smoothly. The electromagnet 3 can be used for centering the workpiece 10 by arranging the positioning shaft 31, for example, an insertion hole of the workpiece 10 can be arranged in the center during production and manufacturing, so that the positioning shaft 31 can be inserted into the workpiece 10 and then aligned with the center of the workpiece 10, the workpiece 10 is prevented from deviating, the position between the subsequent workpiece 10 and the grinding machine body can be adjusted by using the adjusting assembly more accurately, and the adjustment of the workpiece 10 can be more accurate.

Preferably, the left-right adjusting component comprises a left-right adjusting guide rail 51, a left-right adjusting slide block 52 and a left-right adjusting locking piece 53; the left and right adjusting guide rail 51 is connected to the slide block of the linear module 2, and can be connected through a connecting plate; the rear side of the left-right adjusting slide block 52 is connected to the left-right adjusting guide rail 51 in a left-right movable manner, and the front side is connected to the up-down adjusting assembly; the left-right adjustment locking piece 53 is connected with the left-right adjustment guide rail 51 and can be used for locking the left-right adjustment slider 52. Through the arrangement, the up-down adjusting component can be driven to move left and right by moving the left-right adjusting slide block 52, and the installation rack 4 and the electromagnet 3 on the installation rack 4 are synchronously driven to move left and right.

Specifically, a left-right adjusting slot 511 is disposed in front of the left-right adjusting guide rail 52, and the left-right adjusting slot 511 is of a structure with a narrow outer part and a wide inner part, that is, the opening width of the left-right adjusting slot 511 is small; a left-right adjusting latch 521 is disposed at the rear side of the left-right adjusting slider 52 for being inserted into the left-right adjusting slot 511, and the width of the left-right adjusting latch 521 is correspondingly wide at the outside and narrow at the inside. When the workpiece positioning device is used, the left and right adjusting clamping groove 511 is designed to be of a structure with a narrow outer part and a wide inner part, so that the left and right adjusting clamping blocks 521 can not be directly separated forwards after being clamped into the left and right adjusting clamping groove 511, the stability of the left and right adjusting clamping blocks 521 during moving is guaranteed, and the position of the workpiece 10 is adjusted more accurately.

In order to further improve the stability between the left-right adjusting guide rail 51 and the left-right adjusting slider 52, a left-right adjusting extension groove 412 with a width smaller than that of the left-right adjusting slot 411 is extended inside the left-right adjusting slot 511; a left-right adjusting extension block 522 which can be inserted into the left-right adjusting extension groove 412 in a matching manner is further extended from the outer end of the left-right adjusting latch 521.

The left-right adjusting locking piece 53 comprises a screw part and a handle part connected to one end of the screw part; a threaded hole (not shown due to visual obstruction) communicating with the left and right adjustment clamping groove is formed in the left and right adjustment guide rail 51; the screw rod part is in threaded connection with the threaded hole, and the other end of the screw rod part can be pressed on the left-right adjusting fixture block 521. When the locking device is used, the left-right adjusting locking member 53 can be loosened by screwing the left-right adjusting locking member 53 outwards, so that the left-right adjusting fixture block 521 can move freely, and the left-right adjusting fixture block 521 can be pressed tightly to prevent the movement when the left-right adjusting locking member 53 is screwed inwards.

The up-down adjusting component comprises an up-down adjusting guide rail 54, an up-down adjusting slide block 55 and an up-down adjusting locking piece 56; the up-down adjusting guide rail 54 is connected to the left-right adjusting assembly, specifically, the up-down adjusting guide rail 54 is connected to the left-right adjusting slider 52; the rear side of the up-down adjusting slide block 55 is connected to the up-down adjusting guide rail 54 in a way of moving up and down, and the front side is connected with the mounting rack 4; the up-down adjustment locking member 56 is connected to the up-down adjustment guide 54 and can be used to lock the up-down adjustment slider 54. Through the arrangement, the mounting rack 4 and the electromagnet 3 on the mounting rack 4 can be driven to move up and down by moving the up-and-down adjusting slide block 55.

An upper and lower adjusting clamping groove 541 is arranged on the front side of the upper and lower adjusting guide rail 54, and the upper and lower adjusting clamping groove 541 is of a structure with a narrow outer part and a wide inner part, that is, the opening width of the upper and lower adjusting clamping groove 541 is smaller; an up-down adjusting fixture block 551 is disposed at the rear side of the up-down adjusting slider 55 and is inserted into the up-down adjusting fixture groove 541, and the up-down adjusting fixture block 551 is correspondingly configured to be wide at the outside and narrow at the inside. When the adjustable clamp is used, the upper and lower adjusting clamp grooves 541 are in a structure with a narrow outer part and a wide inner part, so that the upper and lower adjusting clamp blocks 551 cannot be directly separated forwards after being clamped into the upper and lower adjusting clamp grooves 541, the stability of the upper and lower adjusting clamp blocks 551 during moving is ensured, and the position of the workpiece 10 is adjusted more accurately.

In order to improve the stability between the up-down adjusting guide rail 54 and the up-down adjusting slider 55, an up-down adjusting extension groove 542 with a width smaller than that of the up-down adjusting clamping groove 541 is further extended on the inner side of the up-down adjusting clamping groove 541; an up-down adjusting extension block 552 which can be fittingly inserted into the up-down adjusting extension groove 542 extends from the outer end of the up-down adjusting latch 521.

The up-down adjusting locking member 56 includes a screw portion and a handle portion connected to one end of the screw portion; a threaded hole communicated with the upper and lower adjusting clamping grooves 541 is formed in the upper and lower adjusting guide rails 54; the screw rod part is in threaded connection with the threaded hole, and the other end of the screw rod part can be pressed on the upper and lower adjusting fixture blocks 551. In use, the up-down adjusting locker 56 is released by screwing the up-down adjusting locker 56 outward, so that the up-down adjusting latch 551 can be freely moved, and the up-down adjusting latch 551 is pressed by screwing the up-down adjusting locker 56 inward, so that it is prevented from being moved.

As shown in fig. 2, in the present embodiment, the rear end of the first spring 7 is connected to a first baffle plate 41 of the mounting frame 4, and the front end of the second spring 9 is connected to a second baffle plate 42 of the mounting frame 4.

The following describes the specific use principle of the present invention, so as to understand the present invention:

firstly, will the utility model discloses a work rest is installed in one side of grinding machine body. Then, the workpiece 10 is sleeved on the positioning shaft 31 and the electromagnet 3 is utilized to firmly suck the workpiece 10 after being electrified, namely the workpiece 10 is positioned at this time; then, the position and the direction of the workpiece 10 can be properly adjusted through an adjusting component according to the position of the grinding machine body; and then, the linear module 2 is started to drive the workpiece 10 to move back and forth, so that the workpiece 10 can be fed on the grinding machine body, and after the machining is finished, the workpiece 10 is unloaded, and a new workpiece 10 is continuously put on the positioning shaft 31 for the next round of machining. Grinding wheels on grinding machine bodies are typically used for grinding work, while adjustment wheels may be used to control the rotation of the workpiece.

To sum up, the utility model discloses a set up buffer and can let the electro-magnet fix the work piece after add man-hour, linear module group drive work piece forward or backward move, because the work piece can contact with grinding wheel and the adjusting wheel of grinding machine body, therefore, just can let the work piece have certain elasticity of stretching out and drawing back after setting up first spring and second spring, namely first spring and second spring provide the cushion force for the work piece and make between work piece and the grinding machine body elastic contact, thereby make the work piece processing rear surface more slick and sly, and then avoided being direct hard contact between work piece and the grinding machine body and influenced the processingquality of work piece; when the workpiece is used, when the workpiece is subjected to large resistance in the forward moving process, external force acts on the workpiece and urges the first spring to compress, and after the external force is released, the workpiece is reset by the stretching force of the first spring; similarly, when the workpiece receives larger resistance in the backward moving process, the external force acts on the workpiece and causes the second spring to compress, and after the external force is released, the workpiece is reset by utilizing the stretching force of the second spring. And simultaneously, the utility model discloses still through setting up adjusting part so that the utility model discloses the work piece that can be applicable to not unidimensional or model uses.

The utility model discloses other corresponding technical features for supplementary technical scheme is implemented, technical staff can combine current conventional technical means to carry out corresponding implementation or improve on its basis, and the technical means to other relevant aspects is no longer repeated here.

In the description of the present application, the appearances of the phrases "embodiment one," "this embodiment," "in particular implementations," and similar language throughout this specification may, but do not necessarily, all refer to the same embodiment or example. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example; furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

In the description of the present specification, the terms "connect", "mount", "fix", "set", "have", and the like are used in a broad sense, for example, the term "connect" may be a fixed connection or an indirect connection through intermediate components without affecting the relationship and technical effects of the components, or may be an integral connection or a partial connection, as in this case, for a person skilled in the art, the specific meaning of the terms in the present invention can be understood according to specific situations.

The foregoing description of the embodiments is provided to enable any person skilled in the art to make and use the embodiments, and it is to be understood that various modifications may be readily apparent to those skilled in the art, and that the generic principles defined herein may be applied to other embodiments without the use of the inventive faculty. Therefore, the present disclosure is not limited to the above embodiments, and modifications to the following cases should be included within the scope of the present disclosure: (1) a new technical proposal which is implemented based on the technical proposal of the utility model and combined with the prior common general knowledge; (2) the technical effect produced by adopting the known technology to equivalently replace part of the characteristics of the technical scheme of the utility model is the same as the technical effect of the utility model, for example, equivalent replacement is carried out on the conventional production equipment and devices used in the process; (3) the technical scheme of the utility model is used as a basis for expansion, and the essential content of the expanded technical scheme does not exceed the technical scheme of the utility model; (4) the technical means obtained by using the equivalent transformation made by the text record content or the attached drawings of the specification of the utility model is applied to the schemes in other related technical fields.

Claims

1. The utility model provides a pay-off positioning mechanism of centerless grinder machined part for use with the grinding machine body cooperation, its characterized in that:

the device comprises a fixed seat, a linear module, an electromagnet, a mounting frame and a buffer device; the linear module is fixed on the fixed seat; the mounting rack is connected with the sliding block of the linear module; the electromagnet is arranged on the mounting rack through a connecting rod of which the tail end is provided with a limiting plate; the buffer device comprises a first spring and a second spring which are respectively sleeved on the connecting rod; the front end and the rear end of the first spring are respectively connected with the electromagnet and the mounting rack; the front end and the rear end of the second spring are respectively connected with the mounting rack and the limiting plate; the linear module is used for driving the electromagnet to move back and forth.

2. The feed positioning mechanism for workpieces of a centerless grinder of claim 1, wherein:

the mounting rack is connected with the sliding block of the linear module through the adjusting component; the adjusting component consists of a left adjusting component, a right adjusting component and an upper adjusting component and a lower adjusting component; the left and right adjusting component is connected with the sliding block of the linear module; the upper and lower adjusting components are connected with the left and right adjusting components, and the mounting rack is connected to the upper and lower adjusting components.

3. The feed positioning mechanism for workpieces of centerless grinding machines of claim 2, wherein:

the left-right adjusting component comprises a left-right adjusting guide rail, a left-right adjusting slide block and a left-right adjusting locking piece; the left and right adjusting guide rails are connected to the sliding blocks of the linear module; the rear side of the left-right adjusting slide block is connected to the left-right adjusting guide rail in a left-right moving manner, and the front side of the left-right adjusting slide block is connected with the up-down adjusting component; the left and right adjusting locking piece is connected with the left and right adjusting guide rail and can be used for locking the left and right adjusting sliding block.

4. The feed positioning mechanism for workpieces of centerless grinding machines of claim 3, wherein:

a left and right adjusting clamping groove is formed in the front side of the left and right adjusting guide rail and is of a structure with a narrow outer part and a wide inner part; the rear side of the left-right adjusting sliding block is provided with a left-right adjusting clamping block which is correspondingly inserted in the left-right adjusting clamping groove, and the left-right adjusting clamping block is correspondingly of a structure with wide outside and narrow inside.

5. The feed positioning mechanism for workpieces of centerless grinding machines of claim 4, wherein:

a left and right adjusting extending groove with the width smaller than that of the left and right adjusting clamping groove extends from the inner side of the left and right adjusting clamping groove; and a left and right adjusting extension block which can be inserted into the left and right adjusting extension groove in a matched manner is also extended from the outer end of the left and right adjusting clamping block.

6. The feed positioning mechanism for workpieces of centerless grinding machines of claim 2, wherein:

the up-down adjusting component comprises an up-down adjusting guide rail, an up-down adjusting slide block and an up-down adjusting locking piece; the upper and lower adjusting guide rails are connected to the left and right adjusting components; the rear side of the up-and-down adjusting slide block is connected to the up-and-down adjusting guide rail in a vertically movable manner, and the front side of the up-and-down adjusting slide block is connected with the mounting rack; the up-down adjusting locking piece is connected with the up-down adjusting guide rail and can be used for locking the up-down adjusting sliding block.

7. The feed positioning mechanism for workpieces on a centerless grinder of claim 6, wherein:

an upper and lower adjusting clamping groove is arranged on the front side of the upper and lower adjusting guide rail and is of a structure with a narrow outer part and a wide inner part; an up-and-down adjusting clamping block which is correspondingly inserted in the up-and-down adjusting clamping groove is arranged at the rear side of the up-and-down adjusting sliding block, and the up-and-down adjusting clamping block is correspondingly of a structure with wide outside and narrow inside.

8. The feed positioning mechanism for workpieces to be processed by a centerless grinder of claim 7, wherein:

an up-down adjusting extending groove with the width smaller than that of the up-down adjusting clamping groove is further extended on the inner side of the up-down adjusting clamping groove; an up-and-down adjusting extension block which can be inserted into the up-and-down adjusting extension groove in a matched manner is also extended from the outer end of the up-and-down adjusting fixture block.

9. The feed positioning mechanism for workpieces on a centerless grinder of claim 1, wherein:

the rear end of the first spring is connected to the first baffle of the mounting frame, and the front end of the second spring is connected to the second baffle of the mounting frame.

10. The feed positioning mechanism for centerless grinder workpieces as set forth in any one of claims 1 to 9, wherein:

and a positioning shaft is also arranged on the front end surface of the electromagnet.