CN218801058U

CN218801058U - Flat grinder is used in cold-heading mould processing

Info

Publication number: CN218801058U
Application number: CN202223498706.4U
Authority: CN
Inventors: 冯永华
Original assignee: Hejian Kunrui Mould Co ltd
Current assignee: Hejian Kunrui Mould Co ltd
Priority date: 2022-12-27
Filing date: 2022-12-27
Publication date: 2023-04-07
Anticipated expiration: 2032-12-27

Abstract

The utility model discloses a flat grinder for processing a cold heading die, wherein grinding wheels are horizontally arranged, a fixed plate and a lifting plate are arranged on a transmission seat in a stacking manner, the fixed plate and the lifting plate are connected by virtue of a slide bar and a locknut, and a tension spring is sleeved on the slide bar; an electromagnet is embedded in the lower end face of the fixed plate to adsorb the lifting plate; a plurality of guide cylinders are arranged on the fixed plate, a plurality of chucks are arranged on the lifting plate, the top ends of the chucks are sleeved in the guide cylinders, and the guide cylinders and the chucks form a clamping seat together; the top end of the chuck splits into an elastic sheet, and the elastic sheet locks the rough blank of the die under the action of the tapered wedge surface of the guide cylinder; the bottom end of the chuck is provided with an anti-falling pin shaft to support the rough blank of the die. The utility model adopts the above flat grinder, make full use of transmits a space, and the centre gripping is convenient, has improved the machining efficiency of cold-heading mould.

Description

Flat grinder is used in cold-heading mould processing

Technical Field

The utility model belongs to the technical field of the flat grinder technique and specifically relates to a flat grinder is used in cold-heading mould processing is related to.

Background

The cold heading die is a die for processing a metal blank in a cold state, and the extrusion piece with a required shape, size and certain mechanical property is obtained under the action of strong pressure and certain speed in a cavity. The whole size of the existing cold heading die is small, and the existing cold heading die is more in a cylindrical shape, such as a steel ball cold heading die, a nut cold heading die and the like. In the process of processing the cold heading die, the height of the rough blank is basically fixed in the cutting process, and the end face is ground by using a surface grinding machine subsequently, and the splicing height error of the die core of the membrane shell is eliminated. Influenced by the clamping structure of the surface grinding machine, the grinding machine can only process a single die rough blank at one time, the utilization rate of the transmission seat is low, and the processing efficiency is influenced.

SUMMERY OF THE UTILITY MODEL

The utility model aims at improving the transmission seat and the clamping structure of current flat grinder to make the grinding machine once can process multiunit mould rough blank, with the problem of solving the grinding machine processing cold-heading mould rough blank inefficiency.

In order to achieve the purpose, the utility model provides the following technical proposal,

a flat grinder for processing a cold heading die is characterized in that grinding wheels are horizontally arranged, a fixed plate and a lifting plate are arranged on a transmission seat in a stacking mode and are connected through a sliding rod and a locknut, and a tension spring is sleeved on the sliding rod; an electromagnet is embedded in the lower end face of the fixed plate to adsorb the lifting plate; a plurality of guide cylinders are arranged on the fixed plate, a plurality of chucks are arranged on the lifting plate, the top ends of the chucks are sleeved in the guide cylinders, and the guide cylinders and the chucks form a clamping seat together; the top end of the chuck splits into an elastic sheet, and the elastic sheet locks the rough blank of the die under the action of the tapered wedge surface of the guide cylinder; the bottom end of the chuck is provided with an anti-falling pin shaft to support the rough blank of the die.

Preferably, the fixed plate is directly welded on the two parallel sliding blocks, and the lifting plate is lifted between the sliding blocks; the slide blocks are positioned by steel columns and shaft sleeves, and the shaft sleeves are sleeved on the screw rods through threads.

Preferably, the top end of the elastic sheet is provided with a wedge surface so as to move along the wedge surface of the guide sleeve.

The utility model adopts the above structure flat grinder is used in cold-heading mould processing, the transmission seat can once only transport multiunit mould rough blank, and has realized self-holding, is showing and has promoted machining efficiency.

Drawings

Fig. 1 is a top view of a grinding machine according to an embodiment of the present invention;

fig. 2 is a side view of a transmission base in an embodiment of the present invention;

FIG. 3 is a schematic view of the clamping mechanism of the embodiment of the present invention;

FIG. 4 is a schematic structural view of a chuck according to an embodiment of the present invention;

fig. 5 is a position diagram of the anti-falling shaft in the embodiment of the present invention.

Reference numerals

1. A servo motor; 2. a fixing plate; 3. a clamping seat; 4. a lifting plate; 5. a slider; 6. a screw rod; 7. a support arm; 8. a grinding wheel; 9. a slide rail; 10. tightening the spring; 11. a guide cylinder; 12. a chuck; 13. a shaft sleeve; 14. a locknut; 15. a steel column; 16. an electromagnet; 17. the anti-falling shaft; 18. rough blank of the mould; 19. a slide bar; 20. a tapered wedge surface; 21. an elastic sheet.

Detailed Description

The technical solution of the present invention is further explained with reference to the drawings and the embodiments.

As shown, the grinding machine platform fixes the grinding wheel 8 in the horizontal direction through the supporting arm 7, and the transfer seat fixes the mold blank 18 in the vertical direction through the clamping seat 3. Under the drive of the servo motor 1, the grinding wheel 8 can directly grind the end face of the rough blank 18 of the die.

Specifically, the transmission seat comprises two parallel sliding blocks 5, and the sliding blocks 5 reciprocate along a sliding rail 9. The top end of the sliding block 5 is welded with the fixing plate 2, the bottom end of the sliding block is connected with the shaft sleeve 13 through the steel column 15, and the screw rod 6 is sleeved with the shaft sleeve 13 in a threaded mode. The fixed plate 2 is provided with a lifting plate 4 by hanging through a slide rod 19 and a locknut 14, and the slide rod 19 is sleeved with a tension spring 10. The lifting plate 4 is positioned between the sliding blocks 5 and is not contacted with the screw rod 6. The lower surface of fixed plate 2 inlays and has a plurality of electromagnetism piece to adsorb lifter plate 4. Eight guide cylinders 11 are arranged on the fixed plate 2, eight chucks 12 are correspondingly arranged on the lifting plate 4, the top ends of the chucks 12 are sleeved in the guide cylinders 11, and the guide cylinders 11 and the chucks 12 form the clamping seat 3 together. The top end of the chuck 12 splits into an elastic sheet 21, and the elastic sheet 21 locks the mould rough blank under the action of the tapered surface 20 of the guide cylinder 11; the bottom end of the chuck 12 is provided with an anti-falling pin shaft so as to support the rough blank of the die. The chuck 12 can be made of beryllium copper to extend its life.

The working principle is as follows:

the mould blank 18 is placed in the holder 3 and the electromagnetic circuit is then activated. The lifting plate 4 drives the chuck 12 to be close to the guide cylinder 11 under the adsorption action of the electromagnet 16. In the approaching process, the elastic sheet 21 is compressed towards the axial direction of the chuck 12 due to the limiting effect of the wedge surface 20, so that the die rough blank 18 is locked. Since the cutting force applied by the grinding wheel 8 to the die blank 18 is in a horizontal direction, the spring plate 21 does not slide down substantially during the grinding process, thereby maintaining the stability of the locking action. After polishing is completed, the electromagnetic circuit is disconnected, and the lifting plate 4 falls back to the initial position again under the action of the spring force and gravity, so that the clamping head 12 releases the mold blank 18. Considering that the iron chips generated by grinding have extremely small parts to fall into the clamping seat 3, the clamping seat 3 only uses the anti-falling pin to fix the rough die blank 18, so that the rough die blank 18 can be prevented from falling, and the iron chips can be dredged to avoid grinding errors caused by the iron chips.

In addition, a lifting structure can be added on the transmission seat to replace the lifting structure at the position of a grinding wheel unit in the existing mechanism. Furthermore, a drawing-pulling type drawing plate can be added below the lifting plate 4, holes are formed in the position, corresponding to the clamping seat 3, of the drawing plate, and meanwhile the anti-falling shaft 17 in the clamping head 12 is removed, so that the drawing plate is drawn to complete automatic blanking of the rough blank 18 of the die.

The above are specific embodiments of the present invention, but the scope of protection of the present invention should not be limited thereto. Any changes or substitutions which can be easily conceived by those skilled in the art within the technical scope of the present invention are covered by the protection scope of the present invention, and therefore, the protection scope of the present invention is subject to the protection scope defined by the claims.

Claims

1. A flat grinder for processing a cold heading die is characterized in that grinding wheels are horizontally arranged, and a fixed plate and a lifting plate are arranged on a transmission seat in a stacking mode and are connected through a sliding rod and a locknut, and a tensioning spring is sleeved on the sliding rod; an electromagnet is embedded in the lower end face of the fixed plate to adsorb the lifting plate; a plurality of guide cylinders are arranged on the fixed plate, a plurality of chucks are arranged on the lifting plate, the top ends of the chucks are sleeved in the guide cylinders, and the guide cylinders and the chucks form a clamping seat together; the top end of the chuck splits into an elastic sheet, and the elastic sheet locks the rough blank of the die under the action of the tapered wedge surface of the guide cylinder; the bottom end of the chuck is provided with an anti-falling pin shaft to support the rough blank of the die.

2. The surface grinder for processing a cold heading die as claimed in claim 1, wherein the fixed plate is welded directly to the two parallel slide blocks, and the elevating plate is elevated between the slide blocks; the slide blocks are positioned by steel columns and shaft sleeves, and the shaft sleeves are sleeved on the screw rods through threads.

3. The flat grinder for cold heading die machining according to claim 1, wherein a tapered surface is provided at a top end of the spring plate so as to move along the tapered surface of the guide sleeve.