CN215546764U

CN215546764U - Work fixture for processing powder metallurgy special-shaped sheet flange piece

Info

Publication number: CN215546764U
Application number: CN202121976883.1U
Authority: CN
Inventors: 杜敬; 王士平; 杨传芳
Original assignee: Superhard Materials Research Institute Of East China Metallurgical Geological Exploration Bureau
Current assignee: Superhard Materials Research Institute Of East China Metallurgical Geological Exploration Bureau
Priority date: 2021-08-20
Filing date: 2021-08-20
Publication date: 2022-01-18
Anticipated expiration: 2031-08-20

Abstract

The utility model discloses a tool clamp for processing a powder metallurgy special-shaped thin plate flange piece, and belongs to the technical field of powder metallurgy processing. The clamp comprises a clamp body, wherein a circular mounting hole penetrating through the thickness of the clamp body is formed in the center of the clamp body, three contraction grooves penetrating through the thickness of the clamp body are uniformly arranged on the clamp body in a spaced mode around the circumferential direction, one of the contraction grooves is a contraction gap, the outer side of the contraction gap extends to the edge position of the clamp body, and the inner side of the contraction gap is communicated with the mounting hole; the other two shrinkage grooves are outer side opening sections, the outer sides of the outer side opening sections extend to the edge position of the clamp body, and the inner sides of the outer side opening sections extend to the position close to the mounting hole and are not communicated with the mounting hole. Aiming at the problems, the utility model provides a tool clamp for processing a powder metallurgy special-shaped thin plate flange piece, which effectively avoids the problems of product deformation, appearance contusion and the like in the process of clamping and processing the special-shaped thin plate flange piece.

Description

Work fixture for processing powder metallurgy special-shaped sheet flange piece

Technical Field

The utility model belongs to the technical field of powder metallurgy processing, and particularly relates to a tool clamp for processing a flange piece of a powder metallurgy special-shaped thin plate.

Background

The powder metallurgy process is mainly a die-pressing forming process, wherein a corresponding die is manufactured according to the appearance of a product, powder is filled into a die cavity of the die, a green compact is obtained through press forming, and the product is obtained through the working procedures of sintering, heat treatment, machining and the like. Compared with the traditional forging and casting, the technology is more environment-friendly in the aspect of manufacturing special-shaped parts, has higher precision, can obtain the final appearance size which is almost the same as the finished product at one time, can obtain the final finished product only by a small amount of cutting processing, and is widely applied to the fields of manufacturing automobile engine accessories, electric tool accessories, garden tool accessories, household appliance accessories and the like. Due to the different nature of the structure of the powder metallurgy product, the tool clamp for machining the powder metallurgy product also has different nature, and almost every product corresponds to a unique tool clamp.

When the special-shaped thin plate flange piece is machined in powder metallurgy products, the clamp for clamping the special-shaped thin plate flange piece has great influence on machining efficiency and dimensional stability. The flange is in a hollow sheet shape and is provided with a plurality of sharp claws, so that the outer claw is positioned, when the clamping force is too large, the claw parts can deform, and the size precision of the outer claw of a product is influenced; if the clamping force is too small, the phenomenon of skidding can occur in the turning process, and certain contusion is caused on the appearance of the product. In addition, when the machine tool clamps the thin plate, the machine tool has the defects of low machining efficiency, low yield and high machining cost due to large vibration of products, large vibration of cutters and unstable machining size in the turning process. Therefore, a tool clamp suitable for processing the special-shaped sheet flange part is urgently needed to be designed.

Through retrieval, some patents have been disclosed in the related technology application of the tool clamp for the special-shaped flange part, for example, the Chinese patent application numbers are as follows: 2019210955055, discloses a clamp for a special-shaped flange, which is arranged on a chuck of a numerical control lathe, the chuck is a two-jaw chuck, the two-jaw chuck is provided with two jaws, clamping plates are arranged on two opposite sides of one end of each jaw far away from a chuck main body, and each clamping plate is close to the center of the chuck main body; the end face of the chuck main body is also provided with a positioning block matched with the concave part of the flange, and the positioning block is arranged between the two clamping jaws; the side face of the chuck body is provided with a fixing plate, the surface of the fixing plate is opposite to the positioning block and extends out of the end face of the chuck body, a threaded through hole is formed in the extending part of the fixing plate, a positioning rod used for clamping the outer side face of a flange is in threaded connection with the threaded through hole, the rod length of the positioning rod is perpendicular to the sliding direction of the clamping jaws, one end of each end of the positioning rod is at least arranged at the two ends of the positioning rod and is a threaded end, the other end of each end of the positioning rod is a positioning end, and the positioning end is located between the two clamping jaws.

Also, for example, the Chinese patent application number is: 2011204411508, discloses a special machining anchor clamps of dysmorphism ring flange, including circular fixture, the key lies in: the center of the circular fixture is provided with a flange groove, the lower part of the fixture is provided with a step surface, the step surface is provided with a through hole which is communicated with the flange groove and the inner wall of which is provided with threads, the outer wall of the fixture is provided with a fastening bolt which is provided with threads matched with the inner wall of the through hole, the fastening bolt penetrates through the through hole and extends into the flange groove, the bottom of the flange groove is provided with a stepped hole, and an ejector rod matched with the stepped hole penetrates through the stepped hole and a spring in sequence and then is in threaded connection with a nut on the other side of the circular fixture. This simple structure, convenient to use is applicable to the fixed of the special-shaped ring flange of multiple difference, has greatly improved production efficiency.

Neither of the two schemes is a good exploration for the tool clamp of the special-shaped flange part, but the research on the tool clamp of the special-shaped flange part in the industry is never stopped.

SUMMERY OF THE UTILITY MODEL

1. Technical problem to be solved by the utility model

Aiming at the problems, the utility model provides the tool clamp for processing the powder metallurgy special-shaped thin plate flange piece, which effectively avoids the problems of product deformation, appearance contusion and the like in the process of clamping and processing the special-shaped thin plate flange piece, and effectively improves the machining efficiency and the size precision.

2. Technical scheme

In order to solve the above problems, the present invention adopts the following technical solutions.

The utility model relates to a tool clamp for processing a powder metallurgy special-shaped sheet flange piece, which comprises a clamp body in a cylindrical structure, wherein a circular mounting hole penetrating through the thickness of the clamp body is formed in the center of the clamp body; the other two shrinkage grooves are outer side opening sections, the outer sides of the outer side opening sections extend to the edge position of the clamp body, and the inner sides of the outer side opening sections extend to the position close to the mounting hole and are not communicated with the mounting hole.

As a further improvement of the utility model, a plurality of inner side opening sections penetrating through the thickness of the clamp body are uniformly arranged on the clamp body at intervals around the circumferential direction, the outer sides of the inner side opening sections extend to the positions close to the edge of the clamp body, and the inner sides of the inner side opening sections are communicated with the mounting holes.

As a further improvement of the utility model, the number of the inner side opening sections is three, the inner side opening sections and the contraction grooves are arranged in a staggered manner, one of the inner side opening sections and the contraction gap are symmetrically arranged at two sides of the diameter direction of the mounting hole, and the other two inner side opening sections are symmetrically arranged at two sides of the contraction gap respectively.

As a further improvement of the utility model, the mounting hole comprises an avoiding section and a fitting section, wherein the cross-sectional area of the avoiding section is gradually reduced along the direction close to the fitting section, an arc transition section used for mounting the special-shaped sheet flange piece is arranged in the avoiding section, and the inner diameter of the fitting section is matched with the outer diameter of the cylindrical section of the special-shaped sheet flange piece.

As a further improvement of the utility model, the avoidance sections are two and are symmetrically arranged at the upper end and the lower end of the joint section.

As a further improvement of the utility model, the widths of the inner side opening section and the contraction groove are both 1.5mm-2 mm.

As a further improvement of the utility model, the distance between the inner side of the outer opening section and the mounting hole is 4mm-6 mm.

As a further improvement of the utility model, the distance between the outer side of the inner side opening section and the edge position of the clamp body is 4mm-6 mm.

3. Advantageous effects

Compared with the prior art, the utility model has the beneficial effects that:

(1) according to the tooling clamp for processing the powder metallurgy special-shaped sheet flange piece, the clamp body is provided with the contraction gap penetrating through the thickness of the clamp body in the radius direction, the outer side of the contraction gap extends to the edge position of the clamp body, the inner side of the contraction gap is communicated with the mounting hole, the contraction gap enables the clamp body and the mounting hole to have gaps, when a cylindrical section of a special-shaped sheet flange piece product is conveniently sleeved into the mounting hole, the special-shaped sheet flange piece product can be effectively contracted and positioned under the clamping force action of a chuck of a machine tool, the flange surface of the product is avoided, the product cannot be clamped and deformed, the vibration amplitude of the product can be reduced, the rotating speed and the feeding amount of the machine tool are improved, and the machining efficiency and the size precision are improved.

(2) According to the tooling clamp for processing the powder metallurgy special-shaped sheet flange piece, the mounting hole comprises the avoiding section and the attaching section, the cross section area of the avoiding section is gradually reduced along the direction close to the attaching section, the arc transition section used for mounting the special-shaped sheet flange piece is arranged in the avoiding section, the inner diameter of the attaching section is matched with the outer diameter of the cylindrical section of the special-shaped sheet flange piece, and the avoiding section is used for mounting the arc transition section, so that the better guiding effect can be achieved, the arc transition section can be avoided, the flange surface is attached to one side end face of the clamp body, the clamping effect of the clamp on a special-shaped sheet flange piece product is guaranteed, and the clamping stability is effectively improved.

(3) According to the tooling clamp for processing the powder metallurgy special-shaped sheet flange piece, the three shrinkage grooves are uniformly distributed on the clamp body, so that the cylindrical section in the mounting hole can be uniformly shrunk and clamped under the clamping force of the chuck of the machine tool, and the problems of product deformation and the like caused by uneven stress in the clamping process are solved.

Drawings

FIG. 1 is a schematic structural diagram of a tooling fixture for processing a flange piece of a powder metallurgy special-shaped thin plate according to the utility model;

FIG. 2 is a cross-sectional view of section A-A of FIG. 1;

FIG. 3 is a schematic structural diagram of a profiled sheet flange part;

fig. 4 is a schematic view of an installation and use structure of the tool clamp for processing the flange piece of the special-shaped powder metallurgy sheet.

The reference numbers in the figures are:

100. a tooling fixture; 110. mounting holes; 111. an avoidance section; 112. a fitting section; 120. shrinking the gap; 130. an outer open section; 140. an inner side open section; 200. a special-shaped sheet flange part; 210. a cylindrical section; 211. a circular arc transition section; 220. a flange face; 300. a machine tool chuck.

Detailed Description

For a further understanding of the utility model, reference should be made to the following detailed description taken in conjunction with the accompanying drawings.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

The present invention will be further described with reference to the following examples.

Example 1

As shown in fig. 3, the profiled sheet flange element 200 in this embodiment includes a cylindrical section 210 and a flange surface 220 disposed at one end of the cylindrical section 210, and an arc transition section 211 is further disposed at an end of the cylindrical section 210 close to the flange surface 220. With reference to fig. 1-4, the tooling fixture for processing the flange of the special-shaped powder metallurgy sheet of the present embodiment includes a fixture body 100 having a cylindrical structure, a circular mounting hole 110 penetrating through the thickness of the fixture body 100 is formed at the center of the fixture body, the mounting hole 110 comprises an avoiding section 111 and an attaching section 112, wherein the cross-sectional area of the avoiding section 111 is gradually reduced along the direction close to the attaching section 112, an arc transition section 211 used for mounting the special-shaped thin plate flange part 200 is arranged in the avoiding section 111, the inner diameter of the attaching section 112 is matched with the outer diameter of the cylindrical section 210 of the special-shaped thin plate flange part 200, the avoiding section 111 is used for mounting the arc transition section 211, not only can play a better guiding role, but also can avoid the arc transition section 211, the flange face 220 is attached to one side end face of the clamp body 100, the clamping effect of the clamp on the special-shaped thin plate flange part 200 is guaranteed, and the clamping stability is effectively improved.

When the special-shaped thin plate flange piece 200 is used, the cylindrical section 210 is clamped into the attaching section 112 of the mounting hole 110 in a matching mode, the arc transition section 211 is clamped into the avoiding section 111 in a matching mode, the inner diameter of the attaching section 112 is 0.15-0.2 mm larger than the outer diameter of the cylindrical section 210 of the special-shaped thin plate flange piece 200 to be clamped, and therefore a product can be conveniently sleeved and taken out. The two avoidance sections 111 are symmetrically arranged at the upper end and the lower end of the attaching section 112, so that the operation of workers is facilitated, and the front side and the back side of the clamp body 100 do not need to be distinguished. The material of the clamp body 100 is made of spring steel with good rigidity, so that the service life of the clamp can be effectively prolonged.

As shown in fig. 1, in the present embodiment, three shrinkage grooves are uniformly spaced around the circumference of the clamp body 100, and extend along the radius direction of the clamp body 100, one of the contraction grooves is a contraction gap 120, the outer side of the contraction gap 120 extends to the edge position of the clamp body 100, the inner side of the contraction gap 120 is communicated with the mounting hole 110, the contraction gap 120 enables the clamp body 100 and the mounting hole 110 to have gaps, when the cylindrical section 210 of the special-shaped sheet flange part 200 product is conveniently sleeved into the mounting hole 110, under the clamping force effect of the machine tool chuck 300, the special-shaped sheet flange part 200 can be effectively shrunk and positioned, the flange surface 220 of the product is avoided, the product cannot be deformed by clamping, the vibration amplitude of the product can be reduced, the rotating speed and the feeding amount of the machine tool are increased, and the machining efficiency and the size precision are improved.

The other two shrinkage grooves in this embodiment are outer opening sections 130, the outer sides of the outer opening sections 130 extend to the edge of the fixture body 100, and the inner sides of the outer opening sections 130 extend to the positions close to the mounting holes 110 and are not communicated with the mounting holes 110. The distance between the inner side of the outer side opening section 130 and the mounting hole 110 is 4mm-6mm, and specifically, the distance between the inner side of the outer side opening section 130 and the mounting hole 110 is 4mm in this embodiment. The three shrinkage grooves are uniformly distributed on the fixture body 100, so that the cylindrical section 210 in the mounting hole 110 can be uniformly shrunk and clamped under the clamping force of the machine tool chuck 300, and the problems of product deformation and the like caused by uneven stress in the clamping process are avoided.

In this embodiment, a plurality of inner opening sections 140 are uniformly spaced around the circumference of the fixture body 100, and penetrate through the thickness of the fixture body, the outer sides of the inner opening sections 140 extend to the position close to the edge of the fixture body 100, and the inner sides of the inner opening sections 140 are communicated with the mounting holes 110. The number of the inner side opening sections 140 is three, the inner side opening sections 140 and the contraction grooves are arranged in a staggered manner, one of the inner side opening sections 140 and the contraction gap 120 are symmetrically arranged on two sides of the diameter direction of the mounting hole 110, and the other two inner side opening sections 140 are symmetrically arranged on two sides of the contraction gap 120 respectively. Wherein the distance between the outside of the inside opening section 140 and the edge position of the jig body 100 is 4mm to 6 mm. Specifically, the distance between the outside of the inside opening section 140 and the edge position of the jig body 100 is 4mm in the present embodiment. The arrangement of the inner side opening section 140 can further improve the uniformity of the stress of the clamp body 100 and the product, and further effectively avoid the problems of clamping deformation and the like of the product. In this embodiment, the width of the inner opening section 140 and the width of the contraction groove are both 1.5mm-2 mm. Specifically, the widths of the inner opening section 140 and the contraction groove are both 1.5mm in this embodiment.

During processing, the cylindrical section of the special-shaped thin plate flange part 200 product is sleeved into the mounting hole 110 of the fixture body 100, the flange face 220 of the product is tightly attached to the end face of the fixture body 100, the fixture sleeved with the product is placed on a machine tool, the periphery of the fixture body 100 is clamped through the machine tool chuck 300, the product is processed to obtain the end face size, the fixture sleeved with the product is taken out of the machine tool chuck 300 after the processing is finished, the product is taken out of the mounting hole 110, the processing of the whole product is completed, and the processing efficiency and the product precision are greatly improved.

Example 2

The tooling fixture for processing the flange piece of the special-shaped powder metallurgy sheet in the embodiment is basically consistent with that in embodiment 1, except that the distance between the inner side of the outer side opening section 130 and the mounting hole 110 is 5mm in the embodiment.

The distance between the outside of the inside opening section 140 and the edge position of the jig body 100 is 5mm in this embodiment.

In this embodiment, the width of the inner opening section 140 and the width of the contraction groove are both 2 mm.

Example 3

The tooling fixture for processing the flange piece of the special-shaped powder metallurgy sheet in the embodiment is basically consistent with that in embodiment 1, except that the distance between the inner side of the outer side opening section 130 and the mounting hole 110 is 6mm in the embodiment.

The distance between the outside of the inside opening section 140 and the edge position of the jig body 100 is 6mm in this embodiment.

In this embodiment, the width of the inner opening section 140 and the width of the contraction groove are both 1.8 mm.

The examples described herein are merely illustrative of the preferred embodiments of the present invention and do not limit the spirit and scope of the present invention, and various modifications and improvements made to the technical solutions of the present invention by those skilled in the art without departing from the design concept of the present invention shall fall within the protection scope of the present invention.

Claims

1. The utility model provides a frock clamp of processing powder metallurgy dysmorphism sheet metal flange spare which characterized in that: the clamp comprises a clamp body (100) with a cylindrical structure, wherein a circular mounting hole (110) penetrating through the thickness of the clamp body (100) is formed in the center of the clamp body (100), three shrinkage grooves penetrating through the thickness of the clamp body are uniformly arranged on the clamp body (100) in a circumferential direction at intervals, the three shrinkage grooves extend along the radius direction of the clamp body (100), one shrinkage groove is a shrinkage gap (120), the outer side of the shrinkage gap (120) extends to the edge position of the clamp body (100), and the inner side of the shrinkage gap (120) is communicated with the mounting hole (110); the other two shrinkage grooves are outer opening sections (130), the outer sides of the outer opening sections (130) extend to the edge position of the clamp body (100), and the inner sides of the outer opening sections (130) extend to the position close to the mounting hole (110) and are not communicated with the mounting hole (110).

2. The tooling clamp for processing the flange part of the special-shaped powder metallurgy sheet as claimed in claim 1, is characterized in that: a plurality of inner side opening sections (140) penetrating through the thickness of the clamp body (100) are uniformly arranged on the clamp body (100) in a spaced mode around the circumferential direction, the outer sides of the inner side opening sections (140) extend to the edge position close to the clamp body (100), and the inner sides of the inner side opening sections (140) are communicated with the mounting holes (110).

3. The tooling clamp for processing the flange part of the special-shaped powder metallurgy sheet as claimed in claim 2, is characterized in that: the number of the inner side opening sections (140) is three, the inner side opening sections (140) and the contraction grooves are arranged in a staggered mode, one inner side opening section (140) and the contraction gap (120) are symmetrically arranged on two sides of the diameter direction of the mounting hole (110), and the other two inner side opening sections (140) are symmetrically arranged on two sides of the contraction gap (120) respectively.

4. The tooling clamp for processing the flange part of the special-shaped powder metallurgy sheet as claimed in claim 1, is characterized in that: the mounting hole (110) comprises an avoiding section (111) and an attaching section (112), wherein the cross-sectional area of the avoiding section (111) is gradually reduced along the direction close to the attaching section (112), an arc transition section (211) used for mounting the special-shaped thin plate flange piece (200) is arranged in the avoiding section (111), and the inner diameter of the attaching section (112) is matched with the outer diameter of a cylindrical section (210) of the special-shaped thin plate flange piece (200).

5. The tooling clamp for processing the flange part of the special-shaped powder metallurgy sheet as claimed in claim 4, wherein: the avoidance sections (111) are two and are symmetrically arranged at the upper end and the lower end of the attaching section (112).

6. A tool clamp for processing a flange piece of a special-shaped powder metallurgy sheet according to any one of claims 2 to 5, wherein: the width of the inner side opening section (140) and the width of the contraction groove are both 1.5mm-2 mm.

7. The tooling clamp for processing the flange part of the special-shaped powder metallurgy sheet as claimed in claim 6, wherein: the distance between the inner side of the outer opening section (130) and the mounting hole (110) is 4-6 mm.

8. The tooling clamp for processing the flange part of the special-shaped powder metallurgy sheet as claimed in claim 7, wherein: the distance between the outer side of the inner side opening section (140) and the edge position of the clamp body (100) is 4-6 mm.