CN216208087U - Device for clamping circular section parts - Google Patents
Device for clamping circular section parts Download PDFInfo
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- CN216208087U CN216208087U CN202023162791.8U CN202023162791U CN216208087U CN 216208087 U CN216208087 U CN 216208087U CN 202023162791 U CN202023162791 U CN 202023162791U CN 216208087 U CN216208087 U CN 216208087U
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Abstract
The utility model discloses a device for clamping a circular section part. The clamping device comprises a pair of clamping units which are symmetrically arranged, each clamping unit comprises a base (1) and a clamping block (2) which is perpendicular to the base (1), and a clamping half hole (3) is formed in the end face of each clamping block (2); the distance h from the end surface of the clamping block (2) to the lowest position of the clamping half hole (3) is 0.1mm smaller than the radius R of the clamping half hole (3). The utility model has the characteristics of stable clamping, economy, high efficiency and no damage to parts with circular sections.
Description
Technical Field
The utility model belongs to the technical field of clamping of circular-section parts and relates to a device for clamping circular-section parts.
Background
Circular cross section parts are an indispensable part in the manufacturing field, and circular cross sections such as steel cables, steel balls, round pipes and the like are widely adopted in the manufacturing field of airplanes, automobiles, ships and other manufacturing fields, and even in articles commonly used in life. Such parts, because of their circular cross-section, cannot be held by means of holding parts of other shapes. If the clamping mode is not proper, the adverse effects of slipping, damage, fatigue and the like of the parts with the circular cross sections can be caused. Clamping a circular-section part by adopting a clamping mode of clamping a rectangular part is difficult to realize, if the clamping force is too small, the circular-section part cannot be clamped stably, and the circular-section part slips when being stretched or impacted, and even the life safety of an operator is damaged; if the clamping force is too large, the surface of the part can generate indentation, damage or internal defects which are invisible to naked eyes, such as fatigue, uneven stress distribution and the like.
In the prior art, a device for clamping parts with circular sections is complex, the manufacturing cost of the clamping device is high, the manufacturing, performance test and use costs of the parts are further increased, and the prior art device is single in applicability and cannot meet the clamping requirements of certain special parts. For example, in order to meet the use requirements of products, a tensile test needs to be performed on a common steel cable in aircraft manufacturing, so that two ends of the steel cable need to be clamped firmly without slipping, and the steel cable is ensured to have good surface quality and no quality defect inside after the test. Compared with a round pipe, the steel cable needs larger force to perform a tensile test, and the clamping at two ends needs to be ensured to be stable enough in the test process, so that the stable clamping of the steel cable is difficult to realize. Just because the centre gripping of this kind of circular cross section part has certain degree of difficulty, so the designer can avoid designing some parts into circular cross section in the product design process, and this has also restricted product performance's promotion to a certain extent.
Disclosure of Invention
The purpose of the utility model is: provides a device for clamping parts with circular cross sections. The utility model has the characteristics of stable clamping, economy, high efficiency and no damage to parts with circular sections.
The technical scheme of the utility model is as follows: a device for clamping circular-section parts comprises a pair of clamping units which are symmetrically arranged, each clamping unit comprises a base and a clamping block which is perpendicular to the base, and a clamping half hole is formed in the end face of each clamping block; the distance h from the end face of the clamping block to the lowest position of the clamping half hole is 0.1mm smaller than the radius R of the clamping half hole.
In the device for clamping circular cross-section parts, when two symmetrically arranged clamping units are used for clamping, the gap delta between the end surfaces of the two clamping blocks is less than or equal to 0.05 mm.
In the device for clamping the circular cross-section part, the thickness w of the clamping block is 4-6R.
In the above-described device for clamping a circular cross-section-type part, the clamping unit is made of 45# steel or 30 CrMnSiA.
In the device for clamping circular cross-section parts, the bases of the two symmetrically arranged clamping units are provided with bolt holes, and the bolt holes between the two bases are aligned pairwise.
In the device for clamping circular cross-section parts, the bolt holes between the two bases are connected through bolts to tighten the two clamping units.
The utility model has the advantages that: the utility model solves the problem of clamping circular section parts, provides guarantee for the manufacture, test and use of various circular section parts and even circular section objects (such as steel cables, steel balls, circular tubes and the like) commonly used in life, enables designers to use the circular section parts without worry according to the requirements of product structures, and makes the improvement of product performance more possible.
In the process device, the two clamping blocks and the clamping half holes for clamping can be manufactured by adopting the processes of cutting and milling after integral forming, other parts can be obtained by conventional simple processing, the manufacture is simple, the cost is low, and the manufacture, test and use costs of parts with circular cross sections can be greatly reduced.
The utility model mainly controls the important dimensions of h, delta and/or w of the process device, so that the process device is stable in clamping, the surface quality and the internal tissue defects of the parts can not be generated, namely the clamping parts can not be damaged and fatigued, the manufacture, the performance test and the use of the parts can be effectively assisted, and meanwhile, the manufacture, the performance test and the use cost of the parts can be greatly reduced due to the simple structure and the convenient manufacture, so that the process device has higher economical efficiency and practicability.
In conclusion, the clamping device has the characteristics of stable clamping, economy, high efficiency and no damage to parts with circular sections.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a diagram showing the positional relationship between the end faces of the two holding blocks when the two holding units are closed.
Reference numerals: 1-base, 2-clamping block, 3-clamping half hole and 4-bolt hole.
Detailed Description
The utility model is further illustrated by the following figures and examples, which are not to be construed as limiting the utility model.
Example 1. A device for clamping circular cross-section parts is formed as shown in figures 1 and 2 and comprises a pair of clamping units which are symmetrically arranged, each clamping unit comprises a base 1 and a clamping block 2 which is perpendicular to the base 1, and the end face of each clamping block 2 is provided with a clamping half hole 3; the distance h from the end surface of the clamping block 2 to the lowest position of the clamping half hole 3 is 0.1mm smaller than the radius R of the clamping half hole 3. Through this setting, can make two centre gripping half holes 3 can produce corresponding clamp force to the circular cross section class part that the radius is R when closing the centre gripping, make the centre gripping firm, also can not cause the damage because of the deformation that circular cross section class part produced during the centre gripping is too big simultaneously.
When the two symmetrically arranged clamping units clamp parts with circular cross sections, the gap delta between the end surfaces of the two clamping blocks 2 is less than or equal to 0.05 mm. Through this setting, can guarantee that the centre gripping is abundant, make the centre gripping firm.
The thickness w of the clamping block 2 is 4-6R. The arrangement enables the round section type part to obtain more sufficient clamping force.
The clamping unit is made of 45# steel or 30 CrMnSiA. A material with higher rigidity is adopted to obtain more reliable clamping.
The base 1 of the two symmetrically arranged clamping units is provided with bolt holes 4, and the bolt holes 4 between the two bases 1 are aligned pairwise. This setting, the clamp force when can guaranteeing the centre gripping is even, avoids causing local stress too concentrated because of pressing from both sides tight inequality, the condition of damage part.
The bolt holes 4 between the two bases 1 are connected through bolts to tighten the two clamping units.
Example 2. The utility model provides a circular cross section class device for part centre gripping, constitutes as shown in fig. 1 and 2, includes base 1, grip block 2, connecting bolt hole 4 and centre gripping half-hole 3, has 4 connecting bolt hole 4 on the base 1, has 1 centre gripping half-hole 3 on the grip block 2, and this circular cross section class device for part centre gripping one set has two, uses in coordination.
In order to ensure the strength and rigidity of the process device, the structure of the process device is ensured not to deform when clamping the circular section parts. The device for clamping the circular section part is made of high-strength and high-rigidity materials, such as 45# steel, 30CrMnSiA and the like.
In order to ensure the matching between the two bases 1 and ensure that the connecting bolt holes are concentric when the two bases 1 are connected by steel connecting bolts. The device for clamping the circular section part is manufactured in a cutting and milling mode after integral forming.
In order to ensure that the process device can clamp parts under two different use conditions of equipment and no equipment, the connecting bolt holes 4 of the two bases 1 of the device for clamping the circular-section-type parts are required to be concentric, a steel connecting bolt penetrates through the connecting bolt holes 4, the two bases 1 are respectively connected to the equipment, or the two bases 1 are directly connected, and nuts with the same size as the steel connecting bolt need to be matched on the end surface of the other base 1 when the two bases 1 are directly connected.
In order to ensure that the working surfaces of the two clamping blocks are parallel, large inclination and skew are not generated. The clearance of the two clamping blocks 2 of the device for clamping the circular section parts is less than 0.05mm after the two clamping blocks are closed.
In order to ensure that the process device can stably clamp circular cross-section parts with different sizes, the adaptability of the process device is improved. The size of the clamping half-hole 3 of the device for clamping the circular-section parts is determined according to the diameter of the circular-section parts to be clamped, and if the radius of the circular-section parts to be clamped is R, the size from the end surface of the clamping block 2 to the lowest part of the clamping half-hole 3 is R-0.1 mm.
The clamping device has the advantages that the strength is enough when the process device clamps parts with larger diameters, and the cost is reduced when the parts with smaller diameters are clamped. The thickness of the clamping block 2 of the device for clamping the circular-section-type parts is determined according to the diameter of the circular-section-type parts to be clamped, and if the diameter of the circular-section-type parts to be clamped is phi, the thickness of the clamping block 2 is 2-3 phi.
When the device for clamping the circular section part is manufactured, the thickness of the clamping block 2 is calculated according to the size of the circular section part to be clamped, the positions of the connecting bolt holes 4 are reasonably arranged according to the requirements of equipment or a clamping process, the whole block of blank is milled, the connecting bolt holes 4 are drilled on the base 1 after the milling is finished, the concentricity is ensured, and holes with the same size as the diameter of the circular section part to be clamped are drilled in the center of the clamping block 2. And then the whole body is cut into two parts from the center of the hole of the clamping block 2 according to the figure 1, and the end surfaces of the two clamping blocks 2 are milled by 0.1mm respectively. When the process device is used through equipment, a steel connecting bolt penetrates through the connecting bolt hole 4 to be connected to the equipment, a part to be clamped is placed on the clamping half-hole 3, force is applied to one or two bases 1 through the equipment to close the two clamping blocks 2, and then the part is stably clamped by the process device. When the process device is directly used for clamping, a steel connecting bolt penetrates through the connecting bolt hole 4, a nut with the size matched with that of the steel connecting bolt is matched on the end face of the other base 1, the two clamping blocks 2 are closed in advance, the bolt is not screwed down, a part needing to be clamped is placed on the clamping half-hole 3, and the part is stably clamped by the process device when the steel connecting bolt is screwed down.
Claims (5)
1. A device for clamping circular-section parts is characterized by comprising a pair of clamping units which are symmetrically arranged, wherein each clamping unit comprises a base (1) and a clamping block (2) which is vertical to the base (1), and the end face of each clamping block (2) is provided with a clamping half hole (3); the distance h from the end surface of the clamping block (2) to the lowest position of the clamping half hole (3) is 0.1mm smaller than the radius R of the clamping half hole (3).
2. Device for clamping parts of circular cross section according to claim 1, characterized in that the gap δ between the end faces of the two clamping blocks (2) is smaller than or equal to 0.05mm when the two symmetrically arranged clamping units are clamping.
3. The device for clamping a circular cross-section part as claimed in claim 1, wherein the thickness w of the clamping block (2) is 4 to 6R.
4. The apparatus as claimed in claim 1, wherein the clamping unit is made of 45# steel or 30 CrMnSiA.
5. Device for clamping parts of circular cross section according to claim 1, characterized in that the bases (1) of two symmetrically arranged clamping units are provided with bolt holes (4), the bolt holes (4) between the two bases (1) being aligned in pairs.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023162791.8U CN216208087U (en) | 2020-12-24 | 2020-12-24 | Device for clamping circular section parts |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023162791.8U CN216208087U (en) | 2020-12-24 | 2020-12-24 | Device for clamping circular section parts |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216208087U true CN216208087U (en) | 2022-04-05 |
Family
ID=80857725
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023162791.8U Active CN216208087U (en) | 2020-12-24 | 2020-12-24 | Device for clamping circular section parts |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216208087U (en) |
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2020
- 2020-12-24 CN CN202023162791.8U patent/CN216208087U/en active Active
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