CN105127065B - PVD coating is with dress sword anchor clamps - Google Patents

Abstract

The present invention discloses a tool fixture for PVD coating, comprising a fixture disk, a tool sleeve cup and an elastic paddle. The end surface of the fixture disk is welded with more than one first positioning pin in the circumferential direction, and each first positioning pin is installed with a tool sleeve cup. The fixture disk of the inner circle of the first positioning pin is provided with second positioning pins of the same number as the first positioning pins, and each group of second positioning pins is provided with two second positioning pins, and the two second positioning pins are one high and one low. An elastic paddle is installed on each of the two second positioning pins, and a disk lock is arranged in the middle of the upper end surface of the fixture disk. Under the premise that each single tool can be rotated, the present invention does not need to consider the influence of too dense clamping tools on the uniformity of tool coating, so the number of tools that can be clamped by each tool fixture can be greatly increased, thereby greatly improving the tool clamping amount in a limited coating area and the production efficiency of coating equipment.

Description

A tool holder for PVD coating

Technical Field

The invention relates to a tool holder for PVD coating.

Background technique

When PVD coating is applied to the tool, the tool needs to rotate with the turntable in the furnace of the coating equipment to ensure that the tool coating has good quality and uniformity. The rotation of the turntable will cause the tool to shake during the coating process, so the tool needs to be clamped with a special tool fixture to prevent the tool from shaking, so as to ensure that the tool surface coating has a neat appearance.

The main function of the tool fixture is to clamp the tool and prevent the tool from shaking during the coating process, which affects the uniformity of the tool surface coating. With the development of the tool coating industry, people have also put forward high requirements for the neatness of the appearance of the coated tool, that is, the tool coating area and the non-coating area must have a neat dividing line; for tool coating manufacturers, using suitable tool fixtures to increase the number of tool clamps in the limited coating space of the coating equipment and thus improve production efficiency has become one of the most effective means. This requires that the tool fixture must have the performance of preventing the tool from shaking, ensuring the neat appearance of the tool, and a large number of tool holders.

Chinese patent CN1990904A discloses a coating fixture and a coating carrier thereof. When using the coating fixture designed by the invention, the coated and uncoated areas above the workpiece placed on the carrier are suspended surfaces, which will cause color difference on the outer surface of the workpiece after coating and seriously affect the appearance characteristics of the workpiece. In addition, when using this coating fixture, the workpiece is prone to shaking during the coating process, and this disadvantage has a great impact on the uniformity of the workpiece coating.

Chinese patent CN202576629U discloses a tool coating fixture. The present invention designs a tool coating fixture with a multi-layer tool fixing seat. The multi-layer tool fixing seat can make full use of the surface area of the fixing column, maximize the number of fixed tools, and complete the coating of multiple tools at one time. At the same time, the tool fixing rod adopts a variable diameter design to effectively prevent the tool from shaking in the tool fixing rod, so that the places where coating is required can be evenly coated, ensuring the quality of tool coating. Chinese patent 203096164U discloses a rotary coating fixture. The rotary coating fixture is provided with a plurality of hollow tubes on the sides of the fixture body, and the handle of the product to be coated is installed in the hollow tube, so that batch products can be clamped at one time for coating, and the efficiency is greatly improved.

The common advantage of the above patents is that they can increase the number of tool clamps in a limited coating area and improve production efficiency, but they all have the following disadvantages:

The tools are clamped in the fixture at an angle (relative to the horizontal plane), and each single tool cannot rotate. Since the target material is arranged vertically relative to the horizontal plane in the coating equipment, the tilted placement of the tool will affect the quality of the tool coating and its coating uniformity to a certain extent. This effect is particularly obvious for large diameter tools (diameter above Φ6mm).

Ensuring coating uniformity is the main reason that restricts the number of tool clamps per furnace in coating equipment, and the uniformity of coating is closely related to whether the tool can rotate properly during the coating process. The rotation of the tool mentioned in the existing patent is only the rotation of the tool holder driven by the rotating shaft, and it cannot achieve the independent rotation of a single tool during the coating process. The rotation of a single tool during coating is crucial to improving the uniformity of the tool coating.

How to ensure the uniformity of tool coating and make the coated tool have better appearance characteristics, while increasing the number of tools that can be clamped by the tool fixture, is the key and difficulty of tool fixture design.

Summary of the invention

The technical problem to be solved by the present invention is to provide a PVD coating tool fixture which can greatly increase the number of tool clamping and at the same time ensure that the tool coating has good quality and uniformity as well as neat appearance characteristics.

The present invention is achieved through the following technical scheme: a tool mounting fixture for PVD coating, comprising a fixture disk, a tool sleeve cup and an elastic paddle, wherein the end face of the fixture disk is welded with more than one first positioning pin shaft along the circumferential direction, and each first positioning pin shaft is installed with a tool sleeve cup, and the fixture disk of the inner circle of the first positioning pin shaft is provided with second positioning pin shafts with the same number as the first positioning pin shafts, and each group of second positioning pin shafts is provided with two second positioning pin shafts, and the two second positioning pin shafts are in a high and low shape, and an elastic paddle is installed on each two second positioning pin shafts, and a disk lock is arranged in the middle of the upper end face of the fixture disk, and the tool mounting fixture is fastened to the rotating frame of the coating equipment through the disk lock.

As a preferred technical solution, the tool mounting cup is composed of three parts: a gear base, a cup body and a single sleeve. The single sleeve is inserted in the cup body, and more than one single sleeve is inserted on each cup body. The cup body filled with single sleeves is placed on the end face of the gear base to form a complete tool mounting cup.

As a preferred technical solution, a third positioning pin shaft, one high and one low, is provided on the end face of the gear base, and the sleeve cup body is fixedly inserted on the third positioning pin shaft; the sleeve cup body is dumbbell-shaped, and the edge parts of the upper and lower end faces have more than one small hole for inserting a single sleeve evenly arranged along the circumferential direction, and the small hole on the upper end face and the corresponding small hole on the lower end face are in the same concentricity.

As a preferred technical solution, the single sleeve is cylindrical, hollow inside and smooth without burrs, the tool to be coated is inserted in the single sleeve, and the tool to be coated and the single sleeve are matched in a clearance fit.

As a preferred technical solution, a plurality of dovetail grooves are evenly opened on the outer side of the bottom of the single sleeve in a direction parallel to the axis.

As a preferred technical solution, the elastic paddle consists of a paddle seat and a paddle body, and the paddle body is fastened to the paddle seat by screws to form a complete elastic paddle; the paddle seat is in the shape of a small rectangular block, and a through hole and a blind hole are provided on its narrower side, and the through hole and the blind hole can be respectively inserted into the second positioning pin shaft on the fixture disk for positioning the elastic paddle; the paddle body is in the shape of a thin strip.

The beneficial effects of the present invention are as follows: the tool mounting fixture is inserted on the fixture plate and the tool to be coated is inserted in the single sleeve in a vertical manner, so that the tool can be parallel to the target material in the coating equipment during the coating process, and a dovetail groove is provided at the tail of the single sleeve for inserting the tool. The elastic paddle in the tool mounting fixture can drive each single sleeve to rotate when the tool mounting sleeve cup is rotated, thereby realizing the rotation of each single tool during the coating process. This design can greatly improve the uniformity of the tool coating.

BRIEF DESCRIPTION OF THE DRAWINGS

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

FIG1 is a schematic diagram of the overall structure of a tool holder for PVD coating according to the present invention;

FIG2 is a schematic diagram of a fixture plate of the present invention;

FIG3 is a schematic diagram of a knife sleeve cup of the present invention;

FIG4 is a schematic diagram of a cup body of the present invention;

FIG5 is a schematic diagram of a gear base of the present invention;

FIG6 is a schematic diagram of a single sleeve of the present invention;

FIG7 is a schematic diagram of an elastic pick of the present invention;

FIG8 is an internal cross-sectional view of FIG7;

1. Clamp plate; 2. Tool sleeve cup; 3. Elastic pick; 4. Tool to be coated; 11. First positioning pin; 12. Second positioning pin; 13. Plate lock; 21. Gear base; 22. Cup body; 23. Single sleeve; 31. Pick seat; 32. Pick body; 211. Third positioning pin; 221. Small hole; 231. Dovetail groove; 311. Through hole; 312. Blind hole.

Detailed ways

All features disclosed in this specification, or steps in all methods or processes disclosed, except mutually exclusive features and/or steps, can be combined in any manner.

Any feature disclosed in this specification (including any additional claims, abstract and drawings), unless otherwise stated, may be replaced by other equivalent or alternative features with similar purposes. That is, unless otherwise stated, each feature is only an example of a series of equivalent or similar features.

As shown in Figures 1 and 2, a tool mounting fixture for PVD coating of the present invention includes a fixture disk 1, a tool mounting cup 2 and an elastic paddle 3. The end face of the fixture disk 1 is welded with more than one first positioning pin 11 along the circumferential direction, and each first positioning pin 11 is installed with a tool mounting cup 2. The fixture disk of the inner circle of the first positioning pin 11 is provided with second positioning pins 12 with the same number as the first positioning pins. Each group of second positioning pins 12 is provided with two second positioning pins, and the two second positioning pins 12 are one high and one low. An elastic paddle 3 is installed on every two second positioning pins 12. A disk lock 13 is provided in the middle of the upper end face of the fixture disk 1, and the tool mounting fixture is fastened to the rotating frame of the coating equipment through the disk lock 13.

As shown in Figure 3, the tool mounting cup 2 is composed of three parts: a gear base 21, a cup body 22 and a single sleeve 23. The single sleeve is inserted in the cup body, and more than one single sleeve is inserted on each cup body. The cup body filled with single sleeves is placed on the end face of the gear base to form a complete tool mounting cup.

As shown in Figures 4 and 5, a third positioning pin 211 with one high and one low is provided on the end surface of the gear base 21, and the sleeve cup body 22 is fixedly inserted on the third positioning pin 211; the sleeve cup body 22 is dumbbell-shaped, and the edge parts of the upper and lower end surfaces thereof have more than one small hole 221 for inserting a single sleeve evenly arranged along the circumferential direction, and the small hole on the upper end surface and the corresponding small hole on the lower end surface are in the same concentricity.

The single sleeve 23 is cylindrical, hollow inside and smooth without burrs. The tool to be coated is inserted into the single sleeve, and the tool to be coated and the single sleeve are matched in a clearance fit.

As shown in FIG. 6 , a plurality of dovetail grooves 231 are evenly opened on the outer side of the bottom of the single sleeve in a direction parallel to the axis. The dovetail grooves 231 are used to realize the rotation of the single sleeve 23 when the elastic paddle 3 is pulled.

As shown in Figures 7 and 8, the elastic paddle consists of two parts: a paddle seat 31 and a paddle body 32. The paddle body is fastened to the paddle seat by screws to form a complete elastic paddle. The paddle seat is in the shape of a small rectangular block, and a through hole 311 and a blind hole 312 are provided on its narrow side. The through hole and the blind hole can be respectively inserted into the second positioning pin 12 on the fixture disk for positioning the elastic paddle 3. The paddle body 32 is in the shape of a thin strip.

Working steps: first insert the complete tool sleeve cup 2 one by one on the positioning pin 11 of the clamp plate 1 for inserting the tool sleeve cup, and then insert the elastic pick 3 on the positioning pin 12 on the clamp plate for inserting the elastic pick, and tighten it with a nut. The tightening principle is: let the end side of the pick body 32 on the elastic pick 3 be close to the dovetail groove 231 at the bottom of the single sleeve 23, so that when the gear base 21 on the tool sleeve cup 2 is rotated, the elastic pick 3 can easily move the single sleeve 23 to rotate.

When using the tool-loading fixture, the tool 4 to be coated is inserted into the single sleeve 23 of the tool-loading sleeve cup 2, and then the tool-loading fixture filled with tools is fixedly installed on the coating equipment turret. In the coating equipment turret, the rotation of the turret can drive the tool-loading fixture to rotate, and the large paddle fixed on the coating equipment turret can drive the gear base 21 on the tool-loading sleeve cup 2 described in this case to rotate, and the rotation of the gear base 21 can then drive the sleeve cup body 22 and the single sleeve 23 thereon to rotate, and then the elastic paddle 3 close to the dovetail groove 231 of the single sleeve can drive the single sleeve 23 to rotate, which is how the tool-loading fixture involved in this case realizes the rotation of each single tool during coating.

The beneficial effects of the present invention are as follows: the tool mounting fixture is inserted on the fixture plate and the tool to be coated is inserted in the single sleeve in a vertical manner, so that the tool can be parallel to the target material in the coating equipment during the coating process, and a dovetail groove is provided at the tail of the single sleeve for inserting the tool. The elastic paddle in the tool mounting fixture can drive each single sleeve to rotate when the tool mounting sleeve cup is rotated, thereby realizing the rotation of each single tool during the coating process. This design can greatly improve the uniformity of the tool coating.

The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that are not conceived through creative work should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope defined in the claims.

Claims (1)

1. A tool fixture for PVD coating, characterized in that it comprises a fixture disc, a tool sleeve cup and an elastic pick, the end surface of the fixture disc is welded with more than one first positioning pin in the circumferential direction, each first positioning pin is installed with a tool sleeve cup, the fixture disc of the inner circle of the first positioning pin is provided with second positioning pins of the same number as the first positioning pins, each group of second positioning pins is provided with two second positioning pins, the two second positioning pins are one high and one low, each two second positioning pins are installed with an elastic pick, a disc lock is provided at the middle of the upper end surface of the fixture disc, and the tool fixture is fastened to the rotating frame of the coating equipment through the disc lock; The knife-mounting sleeve cup is composed of three parts: a gear base, a sleeve cup body and a single sleeve. The single sleeve is inserted in the sleeve cup body. More than one single sleeve is inserted on each sleeve cup body. The sleeve cup body filled with single sleeves is placed on the end surface of the gear base to form a complete knife-mounting sleeve cup. The end surface of the gear base is provided with a third positioning pin shaft, one high and one low, and the sleeve cup body is fixedly inserted on the third positioning pin shaft; the sleeve cup body is dumbbell-shaped, and the upper and lower end surface edges thereof are evenly arranged along the circumferential direction with more than one small hole for inserting a single sleeve, and the small hole on the upper end surface and the corresponding small hole on the lower end surface are in the same concentricity; The single sleeve is cylindrical, hollow inside and smooth without burrs, the tool to be coated is inserted in the single sleeve, and the tool to be coated and the single sleeve are matched in a clearance fit; The outer side of the bottom of the single sleeve is evenly provided with a plurality of dovetail grooves in a direction parallel to the axis; The elastic pick consists of a pick seat and a pick body. The pick body is fastened to the pick seat by screws to form a complete elastic pick. The pick seat is in the shape of a small rectangular block, and a through hole and a blind hole are provided on its narrow side. The through hole and the blind hole can be respectively inserted into the second positioning pin shaft on the fixture disk for positioning the elastic pick: the pick body is in the shape of a thin strip.