US20060185476A1 - Method for making wrenches - Google Patents
Method for making wrenches Download PDFInfo
- Publication number
- US20060185476A1 US20060185476A1 US11/354,397 US35439706A US2006185476A1 US 20060185476 A1 US20060185476 A1 US 20060185476A1 US 35439706 A US35439706 A US 35439706A US 2006185476 A1 US2006185476 A1 US 2006185476A1
- Authority
- US
- United States
- Prior art keywords
- head
- prototype
- basic form
- making
- handle
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
- B21K5/00—Making tools or tool parts, e.g. pliers
- B21K5/16—Making tools or tool parts, e.g. pliers tools for turning nuts
Definitions
- the present invention relates to a method with less steps for making a wrench of less weight.
- FIGS. 1 and 2 A conventional method for making a wrench is shown in FIGS. 1 and 2 and generally includes the following steps:
- sep 1 preparing material: preparing material which is a cylindrical alloy stick “A”;
- step 2 forging: forging the stick “A” in a mold
- step 3 basic form: cutting the stick “A” into a basic form 1 including a head 10 and a handle 11 ;
- step 4 surface machining: machining the two opposite surfaces 101 , 102 of the head 10 of the basic form 1 ;
- step 5 drilling: drilling a hole 103 in the head 10 and making a recess 104 defined in the surface 101 of the head;
- step 6 contouring: making the basic form 1 to include the head 10 , the handle 11 and a grip portion 12 ;
- step 7 prototype 1 ′
- step 8 heat treatment: proceeding heat treatment (annealing) to the prototype 1 ′ under at least 1000° C.;
- step 9 surface grinding: grinding surfaces of the prototype 1 ′;
- step 10 final surface treatment: proceeding final surface treatment by way of sand blowing or vibration;
- step 11 electro-plating: electro-plating a layer of anti-rusting material to the prototype 1 ′;
- step 12 obtaining a product.
- the head 10 and the handle 11 are made by alloy which is heavy and expensive. Besides, most of the alloy is electrically conductive so that the wrench is limited to be used in some work sites. The sizes of the head 10 and the handle are different so that, during the step of forging, a large space or tolerance has to be maintained and which makes the material needed increases.
- the present invention intends to provide a method for making a wrench wherein the number of steps is reduced and the weight of the wrench is also less than the conventional wrench made by the conventional method.
- the present invention relates to a method for making wrench and the method comprises the following steps:
- sep 1 preparing material: preparing raw material which is a cylindrical alloy stick;
- step 2 forging: forging the stick in a mold
- step 3 basic form: cutting the stick into a basic form including a head and a handle;
- step 4 surface machining: machining two opposite surfaces of the head of the basic form
- step 5 drilling: drilling a hole in the head and making a recess defined in the surface of the head;
- step 6 prototype
- step 7 heat treatment: proceeding heat treatment (annealing) to the prototype
- step 8 plastic part installation: putting the prototype in a mold and plastic material being introduced to cover the head, the handle and the grip portion, and
- step 9 obtaining a product.
- FIG. 1 shows steps of a conventional method for making a wrench
- FIG. 2 shows the wrench in different steps
- FIG. 3 shows steps of the method for making a wrench of the present invention
- FIG. 4 shows the wrench in different steps of the method for making a wrench of the present invention
- FIG. 5 shows steps of another method for making a wrench of the present invention.
- the method for making a wrench of the present invention comprises the following steps:
- sep 1 preparing material: preparing raw material which is a cylindrical alloy stick “A”;
- step 2 forging: forging the stick “A” in a mold which is not shown;
- step 3 basic form: cutting the stick “A” into a basic form 3 including a head 30 and a handle 31 ;
- step 4 surface machining: machining two opposite surfaces 301 , 302 of the head 30 of the basic form 3 ;
- step 5 drilling: drilling a hole 103 in the head 30 and making a recess 304 defined in the surface 301 of the head 30 ;
- step 6 prototype 3 ′
- step 7 contouring: contouring the basic form 3 to include the head 10 , the handle 11 and the grip portion 12 ;
- step 8 heat treatment: proceeding heat treatment (annealing) to the prototype 3 ′;
- step 9 surface grinding: for grinding surfaces of the prototype 3 ′ to obtain a clean surface condition
- step 10 final surface treatment: proceeding final surface treatment by way of sand blowing or vibrating;
- step 11 plastic part installation: putting the prototype 3 ′ in a mold (not shown) and plastic material 4 being introduced to cover the head 30 , the handle 31 and the grip portion 32 , and step 12: obtaining a product.
- steps 7, 9 and 10 are optional so that less number of steps is needed to make a wrench.
- the handle 31 of the prototype 3 ′ is smaller than the conventional wrench so that less material is needed.
- different colors of the plastic material are available and combined with the wrench so that the wrench of the present invention is more competitive.
- FIG. 5 which shows another embodiment of the method wherein the step of plastic part installation can be replaced with the step of coating.
- the prototype 3 ′ of the present invention is dip in a container filled with liquid plastic material 4 which is coated to the head 30 , the handle 31 and the grip portion 32 .
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Forging (AREA)
Abstract
A method for making a wrench includes a step of forging a cylindrical alloy stick in a mold into a basic form including a head and a handle. The head is then treated to machine the two opposite surfaces and at least one hole is drilled in the head and a recess is defined in one of the surfaces of the head to form a prototype. The prototype is then proceeded by step of heat treatment and then put in a mold and plastic material is introduced to cover the head, the handle and the grip portion.
Description
- The present invention relates to a method with less steps for making a wrench of less weight.
- A conventional method for making a wrench is shown in
FIGS. 1 and 2 and generally includes the following steps: - sep 1: preparing material: preparing material which is a cylindrical alloy stick “A”;
- step 2: forging: forging the stick “A” in a mold;
- step 3: basic form: cutting the stick “A” into a basic form 1 including a
head 10 and ahandle 11; - step 4: surface machining: machining the two
opposite surfaces head 10 of the basic form 1; - step 5: drilling: drilling a
hole 103 in thehead 10 and making arecess 104 defined in thesurface 101 of the head; - step 6: contouring: making the basic form 1 to include the
head 10, thehandle 11 and agrip portion 12; - step 7: prototype 1′;
- step 8: heat treatment: proceeding heat treatment (annealing) to the prototype 1′ under at least 1000° C.;
- step 9: surface grinding: grinding surfaces of the prototype 1′;
- step 10: final surface treatment: proceeding final surface treatment by way of sand blowing or vibration;
- step 11: electro-plating: electro-plating a layer of anti-rusting material to the prototype 1′; and
- step 12: obtaining a product.
- However, the
head 10 and thehandle 11 are made by alloy which is heavy and expensive. Besides, most of the alloy is electrically conductive so that the wrench is limited to be used in some work sites. The sizes of thehead 10 and the handle are different so that, during the step of forging, a large space or tolerance has to be maintained and which makes the material needed increases. - The present invention intends to provide a method for making a wrench wherein the number of steps is reduced and the weight of the wrench is also less than the conventional wrench made by the conventional method.
- The present invention relates to a method for making wrench and the method comprises the following steps:
- sep 1: preparing material: preparing raw material which is a cylindrical alloy stick;
- step 2: forging: forging the stick in a mold;
- step 3: basic form: cutting the stick into a basic form including a head and a handle;
- step 4: surface machining: machining two opposite surfaces of the head of the basic form;
- step 5: drilling: drilling a hole in the head and making a recess defined in the surface of the head;
- step 6: prototype;
- step 7: heat treatment: proceeding heat treatment (annealing) to the prototype;
- step 8: plastic part installation: putting the prototype in a mold and plastic material being introduced to cover the head, the handle and the grip portion, and
- step 9: obtaining a product.
- The present invention will become more obvious from the following description when taken in connection with the accompanying drawings which show, for purposes of illustration only, a preferred embodiment in accordance with the present invention.
-
FIG. 1 shows steps of a conventional method for making a wrench; -
FIG. 2 shows the wrench in different steps; -
FIG. 3 shows steps of the method for making a wrench of the present invention; -
FIG. 4 shows the wrench in different steps of the method for making a wrench of the present invention, and -
FIG. 5 shows steps of another method for making a wrench of the present invention. - Referring to
FIGS. 3 and 4 , the method for making a wrench of the present invention comprises the following steps: - sep 1: preparing material: preparing raw material which is a cylindrical alloy stick “A”;
- step 2: forging: forging the stick “A” in a mold which is not shown;
- step 3: basic form: cutting the stick “A” into a
basic form 3 including ahead 30 and ahandle 31; - step 4: surface machining: machining two
opposite surfaces head 30 of thebasic form 3; - step 5: drilling: drilling a
hole 103 in thehead 30 and making arecess 304 defined in thesurface 301 of thehead 30; - step 6:
prototype 3′; - step 7: contouring: contouring the
basic form 3 to include thehead 10, thehandle 11 and thegrip portion 12; - step 8: heat treatment: proceeding heat treatment (annealing) to the
prototype 3′; - step 9: surface grinding: for grinding surfaces of the
prototype 3′ to obtain a clean surface condition; - step 10: final surface treatment: proceeding final surface treatment by way of sand blowing or vibrating;
- step 11: plastic part installation: putting the
prototype 3′ in a mold (not shown) and plastic material 4 being introduced to cover thehead 30, thehandle 31 and thegrip portion 32, and step 12: obtaining a product. - It is noted that
steps 7, 9 and 10 are optional so that less number of steps is needed to make a wrench. Thehandle 31 of theprototype 3′ is smaller than the conventional wrench so that less material is needed. Besides, different colors of the plastic material are available and combined with the wrench so that the wrench of the present invention is more competitive. - As shown in
FIG. 5 which shows another embodiment of the method wherein the step of plastic part installation can be replaced with the step of coating. Theprototype 3′ of the present invention is dip in a container filled with liquid plastic material 4 which is coated to thehead 30, thehandle 31 and thegrip portion 32. - While we have shown and described the embodiment in accordance with the present invention, it should be clear to those skilled in the art that further embodiments may be made without departing from the scope of the present invention.
Claims (10)
1. A method for making wrenches, comprising:
sep 1: preparing material: preparing raw material which is a cylindrical alloy stick;
step 2: forging: forging the stick in a mold;
step 3: basic form: cutting the stick into a basic form including a head and a handle;
step 4: surface machining: machining two opposite surfaces of the head of the basic form;
step 5: drilling: drilling a hole in the head and making a recess defined in one of the surfaces of the head;
step 6: prototype;
step 7: heat treatment: proceeding heat treatment (annealing) to the prototype;
step 8: plastic part installation: putting the prototype in a mold and plastic material being introduced to cover the head, the handle and the grip portion, and
step 9: obtaining a product.
2. The method as claimed in claim 1 , wherein a step of contouring for making the basic form to include the head, the handle and the grip portion is added before the step of heat treatment.
3. The method as claimed in claim 1 , wherein a step of surface grinding for grinding surfaces of the prototype is added between steps 7 and 8.
4. The method as claimed in claim 1 , wherein a step of final surface treatment for proceeding final surface treatment by way of sand blowing is added between the steps 7 and 8.
5. The method as claimed in claim 1 , wherein a step of final surface treatment for proceeding final surface treatment by way of vibrating is added between the steps 7 and 8.
6. A method for making wrench, comprising:
sep 1: preparing material: preparing raw material which is a cylindrical alloy stick;
step 2: forging: forging the stick in a mold;
step 3: basic form: cutting the stick into a basic form including a head and a handle;
step 4: surface machining: machining two opposite surfaces of the head of the basic form;
step 5: drilling: drilling a hole in the head and making a recess defined in one of the surfaces of the head;
step 6: prototype;
step 7: heat treatment: proceeding heat treatment (annealing) to the prototype;
step 8: coating: putting the prototype in a container filled with liquid plastic material which is coated to the head, the handle and the grip portion, and
step 9: obtaining a product.
7. The method as claimed in claim 6 , wherein a step of contouring for making the basic form to include the head, the handle and the grip portion is added before the step of heat treatment.
8. The method as claimed in claim 6 , wherein a step of surface grinding for grinding surfaces of the prototype is added between steps 7 and 8.
9. The method as claimed in claim 6 , wherein a step of final surface treatment for proceeding final surface treatment by way of sand blowing is added between the steps 7 and 8.
10. The method as claimed in claim 6 , wherein a step of final surface treatment for proceeding final surface treatment by way of vibrating is added between the steps 7 and 8.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
TW94104877 | 2005-02-18 | ||
TW094104877A TW200630190A (en) | 2005-02-18 | 2005-02-18 | Fabrication method for the main body of ratchet wrench |
Publications (1)
Publication Number | Publication Date |
---|---|
US20060185476A1 true US20060185476A1 (en) | 2006-08-24 |
Family
ID=36911227
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US11/354,397 Abandoned US20060185476A1 (en) | 2005-02-18 | 2006-02-15 | Method for making wrenches |
Country Status (2)
Country | Link |
---|---|
US (1) | US20060185476A1 (en) |
TW (1) | TW200630190A (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20080282848A1 (en) * | 2007-05-16 | 2008-11-20 | Proxene Tools Co., Ltd. | Wrench and method for making the same |
CN102125979A (en) * | 2010-01-18 | 2011-07-20 | 彭桔星 | Molding method of ratchet wrench braking teeth |
US20170056962A1 (en) * | 2016-11-10 | 2017-03-02 | Chen Chih Lin | Process of manufacturing wrenches |
US10155261B2 (en) * | 2017-05-18 | 2018-12-18 | Ming-Chang Chen | Method for forming a wrench end |
US20190176215A1 (en) * | 2017-12-07 | 2019-06-13 | Po-Jung Liao | Method for forming a spanner |
GB2615434A (en) * | 2021-01-26 | 2023-08-09 | Snap On Incorporated | Tool with surfaces with a compressive surface stress layer |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
TW201309428A (en) * | 2011-08-29 | 2013-03-01 | Zhi-Ming Zhang | Manufacturing method for ratchet ring of ratchet wrench |
TWI426003B (en) * | 2012-01-09 | 2014-02-11 | Kabo Tool Co | Manufacturing method, structure and utilization of an elastic c-shaped steel lump |
TW201345663A (en) * | 2012-05-04 | 2013-11-16 | Cheng-Pu Yang | Ratchet manufacturing method |
TW201446429A (en) * | 2013-06-04 | 2014-12-16 | Pard Hardware Ind Co Ltd | Production method of hand tool part |
TWI552834B (en) * | 2015-10-28 | 2016-10-11 | A method for preparing the rotor and a torque tool for making the rotor using the method |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2720799A (en) * | 1954-07-26 | 1955-10-18 | Pfost Leland | Process for molding a wrench and hard-metal insert used therein |
US4986147A (en) * | 1989-07-20 | 1991-01-22 | National Hand Tool Corporation | Ratchet wrench having an internally reinforced handle |
US20040089114A1 (en) * | 2002-08-22 | 2004-05-13 | Macor Richard J. | Handle shroud for double-ended wrenches |
US20050022631A1 (en) * | 2002-12-20 | 2005-02-03 | Brazil Bill Thomas | Non-marring tool |
US20050233118A1 (en) * | 2004-04-16 | 2005-10-20 | Li-Tu Lin Wu | Tool coating with colored patterns |
-
2005
- 2005-02-18 TW TW094104877A patent/TW200630190A/en unknown
-
2006
- 2006-02-15 US US11/354,397 patent/US20060185476A1/en not_active Abandoned
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2720799A (en) * | 1954-07-26 | 1955-10-18 | Pfost Leland | Process for molding a wrench and hard-metal insert used therein |
US4986147A (en) * | 1989-07-20 | 1991-01-22 | National Hand Tool Corporation | Ratchet wrench having an internally reinforced handle |
US20040089114A1 (en) * | 2002-08-22 | 2004-05-13 | Macor Richard J. | Handle shroud for double-ended wrenches |
US20050022631A1 (en) * | 2002-12-20 | 2005-02-03 | Brazil Bill Thomas | Non-marring tool |
US20050233118A1 (en) * | 2004-04-16 | 2005-10-20 | Li-Tu Lin Wu | Tool coating with colored patterns |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20080282848A1 (en) * | 2007-05-16 | 2008-11-20 | Proxene Tools Co., Ltd. | Wrench and method for making the same |
US7607372B2 (en) * | 2007-05-16 | 2009-10-27 | Proxene Tools Co., Ltd. | Method for making a wrench |
CN102125979A (en) * | 2010-01-18 | 2011-07-20 | 彭桔星 | Molding method of ratchet wrench braking teeth |
US20170056962A1 (en) * | 2016-11-10 | 2017-03-02 | Chen Chih Lin | Process of manufacturing wrenches |
US9925581B2 (en) * | 2016-11-10 | 2018-03-27 | Chen Chih Lin | Process of manufacturing wrenches |
US10155261B2 (en) * | 2017-05-18 | 2018-12-18 | Ming-Chang Chen | Method for forming a wrench end |
US20190176215A1 (en) * | 2017-12-07 | 2019-06-13 | Po-Jung Liao | Method for forming a spanner |
GB2615434A (en) * | 2021-01-26 | 2023-08-09 | Snap On Incorporated | Tool with surfaces with a compressive surface stress layer |
GB2615434B (en) * | 2021-01-26 | 2024-01-31 | Snap On Incorporated | Tool with surfaces with a compressive surface stress layer |
Also Published As
Publication number | Publication date |
---|---|
TW200630190A (en) | 2006-09-01 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |