CN108127037B - Die adjusting method - Google Patents
Die adjusting method Download PDFInfo
- Publication number
- CN108127037B CN108127037B CN201711315969.8A CN201711315969A CN108127037B CN 108127037 B CN108127037 B CN 108127037B CN 201711315969 A CN201711315969 A CN 201711315969A CN 108127037 B CN108127037 B CN 108127037B
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- Prior art keywords
- guide
- diameter
- die
- conical
- increment
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D37/00—Tools as parts of machines covered by this subclass
- B21D37/10—Die sets; Pillar guides
- B21D37/12—Particular guiding equipment, e.g. pliers; Special arrangements for interconnection or cooperation of dies
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/50—Glass production, e.g. reusing waste heat during processing or shaping
- Y02P40/57—Improving the yield, e-g- reduction of reject rates
Abstract
The invention discloses a guide post and guide sleeve, which comprises a guide post and a guide sleeve, wherein the guide post comprises a bottom and a guide part, the guide part comprises a conical section, and the increment ratio of the increment of the diameter of the conical surface of the conical section to the increment of the length is 1:10-1:120, wherein the increment ratio of the diameter of the inner conical surface to the length is the same as the increment ratio of the diameter of the conical surface of the conical section to the length, and the inner diameter of the bottommost end of the inner conical surface of the cavity is 0.001-0.005mm larger than the outer diameter of the bottommost end of the conical section. The invention provides a method for adjusting a die, which comprises the following steps: A. machining a mounting hole in a die; B. the guide post and the guide sleeve are arranged in the mounting hole; C. measuring the gap between the guide post and the guide sleeve; D. calculating a gap difference value; E. calculating a length difference value; F. and carrying out adaptability adjustment. The guide post and the guide sleeve are arranged to be in clearance fit with taper, and the taper adopts numerical proportion, so that conversion and adjustment are convenient; the adjustment efficiency of the fit clearance of the guide post and the guide sleeve is improved.
Description
Technical Field
The invention relates to the field of dies, in particular to a die adjusting method using a guide post and a guide sleeve.
Background
The mould is used for producing various moulds and tools of the needed products by injection molding, blow molding, extrusion, die casting or forging, smelting, stamping and other methods in industry. The tool is mainly used for making the blank into a workpiece with a specific shape and size under the action of external force. The method is widely used for blanking, die forging, cold heading, extrusion, powder metallurgy part pressing, pressure casting and the molding processing of compression molding or injection molding of engineering plastics, rubber, ceramics and other products. The die has a specific contour or cavity shape, and the blank can be separated (blanked) according to the contour shape by using the contour shape with the cutting edge. The blank can obtain a corresponding three-dimensional shape by using the shape of the inner cavity. The mold generally comprises a movable mold and a fixed mold (or a male mold and a female mold), which can be separated and combined. And taking out the workpiece when the workpiece is separated, and injecting the blank into the die cavity for forming when the workpiece is closed. The die is a precise tool, has a complex shape, bears the expansion force of a blank, has higher requirements on structural strength, rigidity, surface hardness, surface roughness and machining precision, and is one of important marks of the mechanical manufacturing level. In recent years, with the rapid development and general use of the plastic industry, the engineering plastics are continuously improved in terms of strength, precision and the like, so that the application range of plastic products is continuously expanded, and the proportion of the plastic products is rapidly increased in various fields such as household appliances, instruments, building equipment, automobile industry, daily hardware and the like. With the increasing demand for plastic products, higher demands are being placed on the yield of the mold.
The guide post is a guide element used for being combined with the guide sleeve in the die to ensure that the die can be movably guided to travel with accurate positioning. In order to improve the molding precision of the die, the existing requirement on the precision of the guide post is also higher. In the existing mold, a guide post and a guide sleeve are respectively arranged on mounting holes of a fixed mold and a movable mold. When the guide post and the guide sleeve are matched, a gap is generally reserved, and in order to ensure the precision of die assembly, the gap is not too large, but if the gap is too small, the installation requirement of the guide post and the guide sleeve is very high. In order to ensure the installation precision of the guide post and the guide sleeve, in the prior art, huge cost is often required to be spent on processing the die installation hole, and the installation hole is deformed along with the thermal deformation and abrasion of the die in the use process, so that the matching precision of the guide post and the guide sleeve is affected, and after deviation occurs, the prior art can only overcome the deviation by correcting the die, but the operation is very troublesome, the precision is required to be regulated back to the processing requirement, and the capability of maintaining a master is very tested.
Disclosure of Invention
The invention aims to solve the technical problems that: the guide post and guide sleeve is convenient for adjusting the gap, and the adjusting method is provided.
The invention solves the technical problems as follows: the guide post and guide sleeve comprises a die cavity, wherein the guide post can be inserted into the die cavity, the guide post comprises a bottom and a guide part, the guide part extends upwards from the top surface of the bottom, the outer diameter of the bottom is larger than that of the guide part, the guide part comprises a conical section, the outer diameter of the conical section gradually decreases from bottom to top, and the increment ratio of the increment of the conical surface diameter of the conical section to the increment of the length is 1:10-1:120, the lower extreme of die cavity is the interior conical surface, the increment ratio of the increment of interior conical surface diameter with the increment ratio of the conical surface diameter of conical section with the increment ratio of length is the same, the internal diameter of interior conical surface from down to up reduces gradually, the guide pin bushing includes annular bottom surface, annular bottom surface and the top surface butt of bottom, the internal diameter of the inner conical surface of die cavity is greater than the external diameter of conical section lower extreme 0.001-0.005mm.
As a further improvement of the above technical solution, the increment ratio of the diameter increment of the conical surface of the conical section to the length increment is 1:20 or 1:100.
As a further improvement of the above technical solution, the inner diameter of the lowest end of the inner conical surface of the cavity is 0.002mm larger than the outer diameter of the lowest end of the conical section.
As a further improvement of the above technical solution, the guiding portion of the guide post further includes a cylindrical section, the cylindrical section is located at the uppermost end of the conical section, and an outer diameter of the cylindrical section is smaller than or equal to a minimum diameter of the conical section; the cavity comprises a cylindrical surface, the inner diameter of the cylindrical surface, which is positioned at the uppermost part of the inner conical surface, is smaller than or equal to the minimum inner diameter of the inner conical surface, the inner diameter of the cylindrical surface is 0.003-0.008mm larger than the outer diameter of the cylindrical section, and the difference between the inner diameter of the cylindrical surface and the outer diameter of the cylindrical section is larger than the difference between the inner diameter of the bottommost end of the inner conical surface of the cavity and the outer diameter of the bottommost end of the conical section.
As a further improvement of the technical scheme, the cylindrical section is provided with an annular oil groove.
The invention provides a method for adjusting a die, which comprises the following steps: A. processing mounting holes on a fixed die and a movable die of a die; B. the guide post and the guide sleeve are arranged in the mounting hole; C. closing the die of the fixed die and the movable die, and measuring the gap between the guide post and the guide sleeve; D. comparing the measured gap with a target gap, and calculating a gap difference value, wherein the gap difference value is a radial difference value; E. calculating a length difference value according to the calculated radial difference value and the increment ratio of the increment of the conical surface diameter of the conical section to the length; F. and adaptively adjusting the depth of the mounting hole according to the calculated length difference.
As a further improvement of the above technical solution, the mounting hole includes a spacer, the spacer is placed between the bottom of the mounting hole and the bottom of the guide post/guide sleeve, and in the step F, the spacer is cut by an amount equal to the length difference in the step E.
The beneficial effects of the invention are as follows: the guide post and the guide sleeve are arranged to be in clearance fit with taper, and the taper adopts numerical proportion, so that conversion and adjustment are convenient; the adjusting method adopted by the invention is based on the taper of the numerical proportion, and the bottom surface depth of the guide post and guide sleeve is adjusted to carry out the adjustment of the adjustment clearance, so that the adjusting time is greatly saved, and the adjustment efficiency of the adjustment clearance of the guide post and guide sleeve is improved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings that are required to be used in the description of the embodiments will be briefly described below. It is evident that the drawings described are only some embodiments of the invention, but not all embodiments, and that other designs and drawings can be obtained from these drawings by a person skilled in the art without inventive effort.
FIG. 1 is a cross-sectional view of a guide post and guide sleeve of the present invention;
fig. 2 is a schematic diagram of an application of the present invention.
Detailed Description
The conception, specific structure, and technical effects produced by the present invention will be clearly and completely described below with reference to the embodiments and the drawings to fully understand the objects, features, and effects of the present invention. It is apparent that the described embodiments are only some embodiments of the present invention, but not all embodiments, and that other embodiments obtained by those skilled in the art without inventive effort are within the scope of the present invention based on the embodiments of the present invention. In addition, all coupling/connection relationships mentioned herein do not refer to direct connection of the components, but rather, refer to the fact that a more optimal coupling structure may be formed by adding or subtracting coupling aids depending on the particular implementation. The technical features in the invention can be interactively combined on the premise of no contradiction and conflict.
Referring to fig. 1, a guide post and guide sleeve comprises a guide post 1 and a guide sleeve 2, wherein the guide sleeve 2 comprises a die cavity 21, the guide post 1 can be inserted into the die cavity 21, the guide post 1 comprises a bottom 11 and a guide part 12, the guide part 12 extends upwards from the top surface of the bottom 11, the outer diameter of the bottom 11 is larger than that of the guide part 12, the guide part 12 comprises a conical section 121, the outer diameter of the conical section 121 gradually decreases from bottom to top, and the increment ratio of the increment of the conical surface diameter of the conical section 121 to the increment of the length is 1:10-1:120, and the ratio is integer multiple, so that the gap between the guide post and the guide sleeve can be conveniently adjusted by adjusting the height. The lower end of the cavity 21 is an inner conical surface, the increment ratio of the diameter of the inner conical surface to the increment ratio of the length of the inner conical surface is the same as the increment ratio of the diameter of the conical surface of the conical section 121 to the increment ratio of the length of the conical surface, the inner diameter of the inner conical surface gradually decreases from bottom to top, the guide sleeve 2 comprises an annular bottom surface 22, the annular bottom surface 22 is abutted to the top surface of the bottom 11, and the inner diameter of the bottommost end of the inner conical surface of the cavity 21 is 0.001-0.005mm larger than the outer diameter of the bottommost end of the conical section 121. Preferably, the inner diameter of the lowest end of the inner conical surface of the cavity 21 is 0.002mm larger than the outer diameter of the lowest end of the conical section 121, when the guide pillar and the guide sleeve are completely matched, that is, the annular bottom surface 22 is completely contacted with the top surface of the bottom 11, the clearance between the guide pillar and the guide sleeve is 0.002mm, at this time, the matching precision is the highest, and the installation precision of the guide pillar and the guide sleeve is required to reach the precision so as to ensure smooth die assembly. However, when the installation accuracy of the guide post and the guide sleeve cannot reach 0.002mm, we can calculate the difference of the installation accuracy, the difference is the gap, then the numerical value in the length direction is converted through the proportional numerical value, and then the limit contact position of the guide post and the guide sleeve is adjusted, so that the gap between the guide post and the guide sleeve is adjusted, for example, when the proportion is 1:20, the gap between the guide post and the guide sleeve can be increased by 0.02mm, and then the gap between the guide post and the guide sleeve can be increased by 0.001mm, so that the error of the installation accuracy is compensated.
Further as a preferred embodiment, the taper diameter of the taper section 121 has an increment to length increment ratio of 1:20 or 1:100. Of course, the ratio of the increment of the diameter of the conical surface to the length can be selected according to actual requirements.
Further as a preferred embodiment, the inner diameter of the lowermost end of the inner conical surface of the cavity 21 is 0.002mm larger than the outer diameter of the lowermost end of the conical section 121.
Further as a preferred embodiment, the guiding portion 12 of the guide post 1 further comprises a cylindrical section 122, the cylindrical section 122 being located at the uppermost end of the conical section 121, the outer diameter of the cylindrical section being smaller than or equal to the minimum diameter of the conical section 121; the cavity 21 comprises a cylindrical surface, the cylindrical surface is positioned at the uppermost part of the inner conical surface, the inner diameter of the cylindrical surface is smaller than or equal to the minimum inner diameter of the inner conical surface, the inner diameter of the cylindrical surface is 0.003-0.008mm larger than the outer diameter of the cylindrical section, and the difference between the inner diameter of the cylindrical surface and the outer diameter of the cylindrical section is larger than the difference between the inner diameter of the lowermost end of the inner conical surface of the cavity 21 and the outer diameter of the lowermost end of the conical section 121. With the cylindrical section, the maximum limitation of the gap can be achieved. For example, the inner diameter of the cylindrical surface is 0.005mm larger than the outer diameter of the cylindrical section, and the gap between the guide post and the guide sleeve can be adjusted to be 0.002-0.005mm.
Further as a preferred embodiment, a further annular oil groove is provided in the cylindrical section.
The invention provides a method for adjusting a die, which comprises the following steps: A. processing mounting holes on a fixed die and a movable die of a die; B. the guide post and the guide sleeve are arranged in the mounting hole; C. closing the die of the fixed die and the movable die, and measuring the gap between the guide post and the guide sleeve; D. comparing the measured gap with a target gap, and calculating a gap difference value, wherein the gap difference value is a radial difference value; E. calculating a length difference value according to the calculated radial difference value and the increment ratio of the increment of the conical surface diameter of the conical section to the length; F. and adaptively adjusting the depth of the mounting hole according to the calculated length difference. In the prior art, if a mounting hole with high position accuracy is to be machined, the machining cost is high. By the guide post and guide sleeve, even if the machining precision of the mounting hole is not high, a high-precision die assembly structure can be realized, and the economic benefit is higher when a die with the same precision is obtained due to the relatively low production cost of the guide post and the guide sleeve.
Further as a preferred embodiment, the mounting hole includes a spacer, the spacer is placed between the bottom of the mounting hole and the bottom of the guide post/guide sleeve, and in the step F, the spacer is cut by an amount equal to the length difference in the step E. The mounting height of the guide post can be adjusted by using the gasket, so that the adjusting process can be further simplified, and only the height of the gasket is required to be adjusted.
Referring to fig. 2, a set of die comprises an upper die a and a lower die b, mounting holes are formed in the upper die a and the lower die b, and then a guide post and a guide sleeve are respectively mounted in the lower die and the upper die. The invention skillfully adjusts the contact surface of the guide post and the guide sleeve, so that the upper die and the lower die are not contacted with each other after die assembly, and the mounting position of the guide sleeve is deeper by controlling one position, such as controlling the mounting depth of the guide sleeve, boring the depth of a mounting hole or adjusting the thickness of a gasket. Therefore, after the upper die and the lower die are assembled, the gap between the guide post and the guide sleeve is enlarged, so that the position accuracy error of the mounting hole is compensated, and the accurate assembly of the upper die and the lower die is ensured.
While the preferred embodiments of the present invention have been illustrated and described, the present invention is not limited to the embodiments, and various equivalent modifications and substitutions can be made by one skilled in the art without departing from the spirit of the present invention, and these are intended to be included in the scope of the present invention as defined in the appended claims.
Claims (6)
1. The utility model provides a mould adjustment method of application guide pillar guide pin bushing, guide pillar guide pin bushing includes guide pillar (1), guide pin bushing (2) include die cavity (21), guide pillar (1) can insert in die cavity (21), its characterized in that: the guide pillar (1) comprises a bottom (11) and a guide part (12), wherein the guide part (12) upwards extends out of the top surface of the bottom (11), the outer diameter of the bottom (11) is larger than that of the guide part (12), the guide part (12) comprises a conical section (121), the outer diameter of the conical section (121) gradually decreases from bottom to top, and the increment ratio of the increment of the conical surface diameter of the conical section (121) to the increment of the length is 1:10-1:120, wherein the lower end of the cavity (21) is an inner conical surface, the increment ratio of the diameter of the inner conical surface to the length is the same as that of the conical surface of the conical section (121), the inner diameter of the inner conical surface gradually decreases from bottom to top, the guide sleeve (2) comprises an annular bottom surface (22), the annular bottom surface (22) is abutted with the top surface of the bottom (11), and the inner diameter of the bottommost end of the inner conical surface of the cavity (21) is 0.001-0.005mm larger than the outer diameter of the bottommost end of the conical section (121); the method is characterized by comprising the following steps of:
A. processing mounting holes on a fixed die and a movable die of a die;
B. the guide post and the guide sleeve are arranged in the mounting hole;
C. closing the die of the fixed die and the movable die, and measuring the gap between the guide post and the guide sleeve;
D. comparing the measured gap with a target gap, and calculating a gap difference value, wherein the gap difference value is a radial difference value;
E. calculating a length difference value according to the calculated radial difference value and the increment ratio of the increment of the conical surface diameter of the conical section to the length;
F. and adaptively adjusting the depth of the mounting hole according to the calculated length difference.
2. The mold adjustment method according to claim 1, characterized in that: the mounting hole comprises a gasket, the gasket is placed between the bottom of the mounting hole and the bottom of the guide post or the guide sleeve, in the step F, the gasket is cut, and the cutting machining amount is equal to the length difference value in the step E.
3. The mold adjustment method according to claim 1, characterized in that: the ratio of the increment of the conical surface diameter of the conical section (121) to the increment of the length is 1:20 or 1:100.
4. The mold adjustment method according to claim 2, characterized in that: the inner diameter of the lowest end of the inner conical surface of the cavity (21) is 0.002mm larger than the outer diameter of the lowest end of the conical section (121).
5. The mold adjustment method according to any one of claims 2 to 4, characterized in that: the guide part (12) of the guide post (1) further comprises a cylindrical section, wherein the cylindrical section is positioned at the uppermost end of the conical section (121), and the outer diameter of the cylindrical section is smaller than or equal to the minimum diameter of the conical section (121); the cavity (21) comprises a cylindrical surface, the cylindrical surface is positioned at the uppermost part of the inner conical surface, the inner diameter of the cylindrical surface is smaller than or equal to the minimum inner diameter of the inner conical surface, the inner diameter of the cylindrical surface is 0.003-0.008mm larger than the outer diameter of the cylindrical section, and the difference between the inner diameter of the cylindrical surface and the outer diameter of the cylindrical section is larger than the difference between the inner diameter of the bottommost end of the inner conical surface of the cavity (21) and the outer diameter of the bottommost end of the conical section (121).
6. The mold adjustment method according to claim 5, characterized in that: the cylindrical section is provided with an annular oil groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711315969.8A CN108127037B (en) | 2017-12-12 | 2017-12-12 | Die adjusting method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711315969.8A CN108127037B (en) | 2017-12-12 | 2017-12-12 | Die adjusting method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108127037A CN108127037A (en) | 2018-06-08 |
| CN108127037B true CN108127037B (en) | 2023-06-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711315969.8A Active CN108127037B (en) | 2017-12-12 | 2017-12-12 | Die adjusting method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108127037B (en) |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5316390A (en) * | 1992-12-31 | 1994-05-31 | Hanaway Ronald L | Guide sleeve with seal, guide post and ball bearing assembly |
| US5546958A (en) * | 1994-03-31 | 1996-08-20 | Lake Region Manufacturing Company, Inc. | Guidewire extension system with tactile connection indication |
| CN201586706U (en) * | 2010-01-26 | 2010-09-22 | 苏州市职业大学 | Die guide structure |
| CN103029267A (en) * | 2012-11-08 | 2013-04-10 | 广西梧州五一塑料制品有限公司 | Injecting and molding mold positioning device |
| CN203917649U (en) * | 2014-06-05 | 2014-11-05 | 梅县客都蛋鸡有限公司 | The guide-post of die-set that a kind of punch press is special |
| CN104943089A (en) * | 2015-06-24 | 2015-09-30 | 永高股份有限公司 | Improved guiding and positioning pin for injection mold |
| CN105215204A (en) * | 2015-10-21 | 2016-01-06 | 佛山一精模具配件有限公司 | A kind of novel guide pillar and guide pin bushing |
| CN208728489U (en) * | 2017-12-12 | 2019-04-12 | 佛山一精模具配件有限公司 | A kind of guide post guide sleeve |
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2017
- 2017-12-12 CN CN201711315969.8A patent/CN108127037B/en active Active
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| CN108127037A (en) | 2018-06-08 |
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