Production method for a shape-imparting tool part of a forming tool

Patent metadata

Field	Value
Publication number	US-2022016685-A1
Application number	US-202117377959-A
Country	US
Kind code	A1
Filing date	Jul 16, 2021
Priority date	Jul 16, 2020
Publication date	Jan 20, 2022
Grant date	—

Abstract

A method of manufacturing a tool part of a forming tool. The method includes forming a tool element of the tool part having a shape-imparting operating face and at least one first cooling duct for cooling a liquid using an additive manufacturing machine. The first cooling duct has at least one rectifier portion including a blocking direction and an opposing passing direction. The blocking direction has a higher flow resistance to cooling liquid than the passing direction.

First claim

What is claimed is:

1 . A method of manufacturing a tool part of a forming tool, the method comprising:
forming a tool element of the tool part having a shape-imparting operating face and at least one first cooling duct for cooling a liquid using an additive manufacturing machine,
wherein the at least one first cooling duct has at least one rectifier portion including a blocking direction and an opposing passing direction, cooling liquid flowing through the at least one first cooling duct in the blocking direction has a higher flow resistance than cooling liquid flowing through the at least one first cooling duct in the passing direction.

2 . The method of claim 1 , wherein the at least one rectifier portion has a primary portion and a counterflow portion, the counterflow portion branches off from the primary portion at an angle of less than 90 degrees in the blocking direction and opens into the primary portion at an angle of more than 90 degrees in the passing direction.

3 . The method of claim 1 , wherein the at least one rectifier portion has a primary portion and at least one rigid guiding element, the at least one rigid guiding element is inclined in the passing direction and extends toward a center of the primary portion.

4 . The method of claim 1 , wherein the step of forming the tool element using the additive manufacturing machine includes forming a plurality of clearances within the tool element, the plurality of clearances are spaced apart from each first cooling duct.

5 . The method of claim 1 , further comprising inserting the tool element into a recess of a base element of the tool part such that the at least one first cooling duct is fluidly connected to a second cooling duct formed within the base element.

6 . The method of claim 5 , wherein the recess is formed in the base element using subtractive machining.

7 . The method of claim 5 , wherein the second cooling duct is formed in the base element using subtractive machining prior to insertion of the tool element.

8 . The method of claim 5 , wherein the tool element in a region of the shape-imparting operating face is made from a harder material than that of the base element.

9 . The method of claim 5 , wherein the step of forming the tool element using the additive manufacturing machine includes forming a groove surrounding a connecting opening at an end of the first cooling duct for connecting to the second cooling duct, further comprising inserting an elastic sealing element into the groove prior to inserting the tool element into the recess.

10 . The method of claim 1 , wherein the tool element includes a plurality of regions, two of the plurality of regions are made of different materials.

11 . A method of manufacturing a tool part of a forming tool, the method comprising:
forming a tool element of the tool part having a shape-imparting operating face and at least one first cooling duct for cooling a liquid using an additive manufacturing machine; forming a base element of the tool part having a recess and a second cooling duct using subtractive machining; and inserting the tool element into the recess of the base element such that the at least one first cooling duct is fluidly connected to the second cooling duct, the second cooling duct is formed in the base element prior to inserting the tool element into the recess,
wherein the at least one first cooling duct has at least one rectifier portion including a blocking direction and an opposing passing direction, cooling liquid flowing through the at least one first cooling duct in the blocking direction has a higher flow resistance than cooling liquid flowing through the at least one first cooling duct in the passing direction.

12 . The method of claim 11 , wherein the at least one rectifier portion has a primary portion and a counterflow portion, the counterflow portion branches off from the primary portion at an angle of less than 90 degrees in the blocking direction and opens into the primary portion at an angle of more than 90 degrees in the passing direction.

13 . The method of claim 11 , wherein the at least one rectifier portion has a primary portion and at least one rigid guiding element, the at least one rigid guiding element is inclined in the passing direction and extends toward a center of the primary portion.

14 . The method of claim 11 , wherein the step of forming the tool element using the additive manufacturing machine includes forming a plurality of clearances within the tool element, the plurality of clearances are spaced apart from each first cooling duct.

15 . The method of claim 11 , wherein the step of forming the tool element using the additive manufacturing machine includes forming a groove surrounding a connecting opening at an end of the first cooling duct for connecting to the second cooling duct, further comprising inserting an elastic sealing element into the groove prior to inserting the tool element into the recess.

16 . A tool part of a forming tool, the tool part comprising:
a tool element having a shape-imparting operating face and at least one first cooling duct for cooling a liquid, the tool element being an additive depositable material,
wherein the at least one first cooling duct has at least one rectifier portion including a blocking direction and an opposing passing direction, cooling liquid flowing through the at least one first cooling duct in the blocking direction has a higher flow resistance than cooling liquid flowing through the at least one first cooling duct in the passing direction.

17 . The tool part of claim 16 , wherein the at least one rectifier portion has a primary portion and a counterflow portion, the counterflow portion branches off from the primary portion at an angle of less than 90 degrees in the blocking direction and opens into the primary portion at an angle of more than 90 degrees in the passing direction.

18 . The tool part of claim 16 , wherein the at least one rectifier portion has a primary portion and at least one rigid guiding element, the at least one rigid guiding element is inclined in the passing direction and extends toward the center of the primary portion.

19 . The tool part of claim 16 , further comprising a plurality of clearances formed within the tool element, the plurality of clearances are spaced apart from each first cooling duct.

20 . The tool part of claim 16 , further comprising:
the tool element including a groove surrounding a connecting opening at an end of the first cooling duct; a base element having a recess and a second cooling duct fluidly connected to the at least one first cooling duct; and an elastic sealing element disposed in the groove and engaging the tool element and the base element.

Assignees

• Ford Global Tech Llc

Inventors

• Koch Raphael
• Broda Maik
• Oezkan Ferat
• Popov Ilya

Classifications

• Y02P10/25

  Process efficiency · CPC title

• B33Y10/00

  Processes of additive manufacturing · CPC title

• B33Y40/20

  Post-treatment, e.g. curing, coating or polishing · CPC title

• C22F1/04

  of aluminium or alloys based thereon · CPC title

• B22F10/28 Primary

  Powder bed fusion, e.g. selective laser melting [SLM] or electron beam melting [EBM] · CPC title