CN110722480A - Multi-point clamp holder for machining pipe fitting - Google Patents
Multi-point clamp holder for machining pipe fitting Download PDFInfo
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- CN110722480A CN110722480A CN201911122739.9A CN201911122739A CN110722480A CN 110722480 A CN110722480 A CN 110722480A CN 201911122739 A CN201911122739 A CN 201911122739A CN 110722480 A CN110722480 A CN 110722480A
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- clamping
- clamping arm
- arm
- pipe
- pipe fitting
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B11/00—Work holders not covered by any preceding group in the subclass, e.g. magnetic work holders, vacuum work holders
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Clamps And Clips (AREA)
Abstract
The invention discloses a multi-point clamp holder for mechanically processing pipe fittings, which can effectively improve the clamping and positioning effects of the pipe fittings by a plurality of groups of clamping arms distributed along the axis of the pipe fittings and a clamp holder for supporting the pipe fittings by balls on the clamping arms, and is characterized in that a plurality of mounting grooves are equidistantly formed on the inner wall of an outer fixing sleeve and are annularly distributed, guide strips are arranged in the mounting grooves, clamping grooves are respectively formed on two sides of each guide strip, rubber bulges are arranged on the groove walls of the clamping grooves, the clamping grooves extend from one end of each guide strip to the other end of each guide strip, a main clamping arm is arranged in the outer fixing sleeve, one end of the main clamping arm is provided with a limiting flange and is clamped in the clamping grooves on the guide strips, the included angle between the limiting flange and the main clamping arm is an acute angle, an auxiliary clamping arm is arranged in the outer fixing sleeve, and one end of the auxiliary clamping arm is hinged with the other end, and a limiting flange is arranged at the other end of the auxiliary clamping arm and clamped in a clamping groove on the guide strip.
Description
Technical Field
The invention discloses a multipoint clamp holder for machining a pipe fitting, relates to a clamp holder for multipoint clamping of the pipe fitting when the pipe fitting is machined, and belongs to the field of machining. In particular to a clamp which clamps the pipe fitting at multiple points through a plurality of groups of clamping arms distributed along the axis of the pipe fitting and supports the pipe fitting through balls on the clamping arms.
Background
At present, when the pipe fitting is processed, the pipe fitting needs to be clamped and fed, and in the feeding process, because the clamping points between the clampers are positioned on the same circumference, the pipe diameter can not be adjusted through the clamping points under the condition of bending and the like, or relieving the problem that when the pipe fitting is pushed after being bent, the bending and even clamping of the pipe fitting are aggravated, the processing progress is influenced, and during the transmission processing, the bending of the pipe fittings can influence the processing size, and only one section of the pipe fittings close to the clamping points meets the requirement, when clamping is carried out, the transmission is influenced by over-tight clamping, the positioning is influenced by over-loose clamping, the clamping point can not follow the movement of the pipe fitting properly, the pipe fitting is supported, and although the existing pipe fitting is clamped by adopting multiple points, the clamping points are distributed on the same circumference and cannot extend along the axis, so that the pipe fitting cannot be supported by clamping.
The publication No. CN107160199A discloses a pipe fitting clamping device, which comprises a clamping seat, an outer bobbin and arc-shaped clamping plates, wherein the clamping seat is provided with a through hole along the left-right direction, the outer bobbin matched with a thread is placed in the through hole, the arc-shaped clamping plates are placed in the outer bobbin, the circumferential end surfaces of the arc-shaped clamping plates relatively form a cylindrical structure, a slot is formed on one side end surface of each arc-shaped clamping plate along the circumferential direction, a bolt is arranged on the other side end surface of each arc-shaped clamping plate, the adjacent arc-shaped clamping plates are inserted into the slots through the bolts and are matched and connected, the outer diameter of the cylindrical structure formed between the arc-shaped clamping plates is gradually increased from one end to the other end, the inner diameter of the outer bobbin is gradually decreased from one end to the other end, the large end of the outer bobbin corresponds to the small end of the cylindrical structure, and the outer bobbin and the cylindrical structure are connected through the thread, the pipe fitting is clamped by encircling the pipe fitting, and the clamping points are short in axial distribution and cannot effectively support the pipe fitting.
Disclosure of Invention
In order to improve the situation, the multi-point gripper for machining the pipe fitting provided by the invention is a gripper which carries out multi-point gripping on the pipe fitting through a plurality of groups of gripping arms distributed along the axis of the pipe fitting and supports the pipe fitting through balls on the gripping arms. The clamping and positioning effects on the pipe fitting can be effectively improved.
The invention discloses a multi-point gripper for machining pipe fittings, which is realized by the following steps: the invention relates to a multi-point clamp holder for machining pipe fittings, which consists of an outer fixing sleeve, a guide strip, a main clamping arm, an articulated shaft, an auxiliary clamping arm, a limiting flange, a ball, a pressing plate, a supporting spring and clamping grooves, wherein a plurality of mounting grooves are equidistantly formed in the inner wall of the outer fixing sleeve and are distributed in an annular manner, the guide strip is arranged in the mounting grooves, the two sides of the guide strip are respectively provided with the clamping grooves, rubber bulges are arranged on the groove walls of the clamping grooves, the clamping grooves extend from one end to the other end of the guide strip, the main clamping arm is arranged in the outer fixing sleeve, one end of the main clamping arm is provided with the limiting flange and is clamped in the clamping grooves on the guide strip, the included angle between the limiting flange and the main clamping arm is an acute angle, the auxiliary clamping arm is arranged in the outer fixing sleeve, one end of the auxiliary clamping arm is articulated with the other end of the articulated shaft, the other end, the angle between the limiting flange and the auxiliary clamping arm is an acute angle, the outer side surface of the limiting flange is an inclined plane, the main clamping arm and the auxiliary clamping arm are symmetrical, the main clamping arm is composed of two parts, one part close to the articulated shaft is of an arc-shaped rod-shaped structure, the auxiliary clamping arm is composed of two parts, one part close to the articulated shaft is of an arc-shaped rod-shaped structure, the main clamping arm and the connected auxiliary clamping arm are combined to form a clamping arm, the three groups of clamping arms are arranged in the outer fixing sleeve at equal angles and are arranged at equal intervals along the axis of the outer fixing sleeve, the inner side of the main clamping arm is provided with a strip-shaped groove, a plurality of supporting springs are respectively arranged in the strip-shaped groove on the main clamping arm, a pressing plate is arranged on the inner side of the main clamping arm and corresponds to the strip-shaped groove on the inner side of the main clamping arm, the inner side of the auxiliary clamping arm is provided with a strip-shaped groove, and it is corresponding with the inboard bar groove of assisting centre gripping arm, it has a plurality of through-holes to open on the clamp plate, and with a plurality of supporting spring one-to-one of corresponding bar inslot, the ball is rotatable arrange in the through-hole, and contacts with the supporting spring that corresponds, and the ball on the centre gripping arm of the same group is a set of, and the ball diameter of the same group reduces to both ends from the centre gradually.
When the pipe fitting clamping device is used, when a pipe fitting is machined, firstly, the angle between the main clamping arm and the auxiliary clamping arm is opened to the maximum, the three clamping arms are fixed in the outer fixing sleeve at equal angles, the pipe fitting penetrates through the three clamping arms, then the angle between the main clamping arm and the auxiliary clamping arm is adjusted according to the diameter of the pipe fitting, the first group of clamping arms is dismounted, the angle between the main clamping arm and the auxiliary clamping arm is adjusted, the balls on the main clamping arm and the auxiliary clamping arm are placed on the outer wall of the pipe fitting, the balls are pushed by the supporting spring to be attached to the outer wall of the pipe fitting, the limiting flanges at the two ends of the adjusted first group of clamping arms are respectively clamped into the corresponding clamping grooves, the second group of clamping arms is dismounted for repeated operation and clamped on the outer fixing sleeve, the third group of clamping arms is dismounted for repeated operation and clamped on the outer fixing sleeve, so that the three groups of clamping arms clamp the pipe fitting, and the equal angle between three groups of centre gripping arms distributes along the pipe fitting axis, and then form the centre gripping to the pipe fitting and hold in the palm, when the pipe fitting propelling movement, move along outer fixed cover, ball on main centre gripping arm and the supplementary centre gripping arm rotates along the removal of pipe fitting, and then the centre gripping point position can follow, hold in the palm the pipe fitting, when the pipe fitting appears crooked, adjust the position of three groups of centre gripping arms in outer fixed cover, and then adjust the clamping position, avoid the crooked position, when preventing the propelling movement, the bending of dead or aggravation pipe fitting appears, reach when adding man-hour to the pipe fitting, carry out the mesh of multiple spot centre gripping to the pipe fitting.
Has the beneficial effects.
Firstly, can follow at the pinch point position and change, improve pipe fitting conveying smoothness degree.
And secondly, the bending position can be avoided, the clamping stagnation of the pipe fitting during bending is prevented, and the processing progress of the pipe fitting during bending is improved.
And thirdly, the clamping and positioning effects on the pipe fitting can be effectively improved.
Drawings
Fig. 1 is a three-dimensional structure diagram of a multi-point gripper for machining pipe fittings according to the invention.
Fig. 2 is a three-dimensional exploded view of the auxiliary clamping arm of the multi-point clamp for machining pipe fittings, which is only exploded in a structure of balls on one side.
Fig. 3 is a perspective view of a guide strip of a multi-point gripper for machining a pipe according to the present invention.
In the attached drawings
Wherein the parts are: the device comprises an outer fixing sleeve (1), a guide strip (2), a main clamping arm (3), a hinged shaft (4), an auxiliary clamping arm (5), a pipe fitting (6), a limiting flange (7), a ball (8), a pressing plate (9), a supporting spring (10) and a clamping groove (11).
The specific implementation mode is as follows:
the invention discloses a multi-point gripper for machining pipe fittings, which is realized by the following steps: the invention relates to a multi-point clamp holder for machining pipe fittings, which consists of an outer fixing sleeve (1), a guide strip (2), a main clamping arm (3), a hinged shaft (4), an auxiliary clamping arm (5), a limiting flange (7), balls (8), a pressing plate (9), a supporting spring (10) and clamping grooves (11), wherein a plurality of mounting grooves are formed in the inner wall of the outer fixing sleeve (1) at equal intervals and are distributed annularly, the guide strip (2) is arranged in the mounting grooves, clamping grooves (11) are respectively formed in two sides of the guide strip (2), rubber bulges are arranged on the groove walls of the clamping grooves (11), the clamping grooves (11) extend from one end to the other end of the guide strip (2), the main clamping arm (3) is arranged in the outer fixing sleeve (1), the limiting flange (7) is arranged at one end of the main clamping arm (3), the main clamping arm is clamped in the clamping grooves (11) on the guide strip (2), and the included angle is formed between the limiting flange (7) and the main clamping arm (3, the auxiliary clamping arm (5) is arranged in the outer fixing sleeve (1), one end of the auxiliary clamping arm is hinged with the other end of the auxiliary clamping arm (5) through an articulated shaft (4), a limiting flange (7) is arranged at the other end of the auxiliary clamping arm (5), the auxiliary clamping arm is clamped in a clamping groove (11) on the guide strip (2), an included angle between the limiting flange (7) and the auxiliary clamping arm (5) is an acute angle, the outer side surface of the limiting flange (7) is an inclined plane, the main clamping arm (3) and the auxiliary clamping arm (5) are symmetrical, the main clamping arm (3) consists of two parts, one part close to the articulated shaft (4) is an arc rod-shaped structure, the auxiliary clamping arm (5) consists of two parts, one part close to the articulated shaft (4) is an arc rod-shaped structure, the main clamping arm (3) and the connected auxiliary clamping arm (5) are combined to form a clamping arm, three groups of clamping arms are arranged in the outer fixing sleeve (1) at equal angles, and are equidistantly arranged along the axis of the outer fixed sleeve (1), the inner side of the main clamping arm (3) is provided with a strip-shaped groove, a plurality of supporting springs are respectively arranged in the strip-shaped groove on the main clamping arm (3), the pressing plate (9) is arranged at the inner side of the main clamping arm (3), and corresponding to the strip-shaped groove on the inner side of the main clamping arm (3), the inner side of the auxiliary clamping arm (5) is provided with a strip-shaped groove, a plurality of supporting springs are respectively arranged in the strip-shaped groove on the auxiliary clamping arm (5), the pressing plate (9) is arranged on the inner side of the auxiliary clamping arm (5), and corresponds to the strip-shaped groove at the inner side of the auxiliary clamping arm (5), a plurality of through holes are arranged on the pressing plate (9), and is in one-to-one correspondence with a plurality of supporting springs in the corresponding strip-shaped groove, the ball (8) is rotatably arranged in the through hole, and the ball bearings (8) on the same group of clamping arms are in a group, and the diameters of the ball bearings (8) in the same group are gradually reduced from the middle to the two ends.
When the pipe fitting clamping device is used, when a pipe fitting (6) is machined, firstly, the angle between the main clamping arm (3) and the auxiliary clamping arm (5) is opened to the maximum, the three clamping arms are fixed in the outer fixing sleeve (1) at equal angles, the pipe fitting (6) penetrates through the three clamping arms, then the angle between the main clamping arm (3) and the auxiliary clamping arm (5) is adjusted according to the diameter of the pipe fitting (6), a first group of clamping arms are dismounted, the angle between the main clamping arm (3) and the auxiliary clamping arm (5) is adjusted, balls (8) on the main clamping arm (3) and the auxiliary clamping arm (5) are placed on the outer wall of the pipe fitting (6), the balls (8) are pushed by a supporting spring to be attached to the outer wall of the pipe fitting (6), flange limit positions (7) at two ends of the adjusted first group of clamping arms are respectively clamped into corresponding clamping grooves (11), and a second group of clamping arms are dismounted, repeating the operation, clamping the outer fixing sleeve (1), detaching the third group of clamping arms, repeating the operation, and is clamped on the outer fixing sleeve (1) to enable the three groups of clamping arms to clamp and fix the pipe fitting (6), and the three groups of clamping arms are distributed along the axis of the pipe fitting (6) at equal angles, thereby clamping the pipe fitting (6) to form a support, when the pipe fitting (6) is pushed, the pipe fitting (6) moves along the outer fixing sleeve (1), the balls (8) on the main clamping arm (3) and the auxiliary clamping arm (5) rotate along with the movement of the pipe fitting (6), and the position of the clamping point can follow, supports the pipe fitting (6), adjusts the positions of the three groups of clamping arms in the outer fixing sleeve (1) when the pipe fitting (6) is bent, the clamping position is further adjusted to avoid the bending position, so that the pipe fitting (6) is prevented from being blocked or being bent seriously during pushing;
the design that rubber bulges are arranged on the groove wall of the clamping groove (11) can increase the friction force between the clamping groove and the limiting flange (7), so that the fixing stability of the clamping arm is improved;
the clamping groove (11) extends from one end of the guide strip (2) to the other end, so that the clamping position of the limiting flange (7) in the clamping groove (11) can be adjusted as required, the position of the clamping arm is further finely adjusted, and the bending position is avoided;
the design that the included angle between the limiting flange (7) and the main clamping arm (3) is an acute angle enables the limiting flange (7) to incline towards the main clamping arm (3), and further enables the main clamping arm (3) and the guide strip (2) to be tightly attached and fixed in the clamping groove (11) clamped by the limiting flange (7);
the three groups of clamping arms are arranged in the outer fixing sleeve (1) at equal angles and are arranged at equal intervals along the axis of the outer fixing sleeve (1), so that clamping points of the three groups of clamping arms can extend and distribute along the axis of the pipe fitting (6) to support the pipe fitting (6), and the clamping and fixing stability of the pipe fitting (6) is improved;
an included angle between the limiting flange (7) and the auxiliary clamping arm (5) is an acute angle, so that the limiting flange (7) can be inclined towards the auxiliary clamping arm (5), and the auxiliary clamping arm (5) and the guide strip (2) can be tightly attached and fixed in the clamping groove (11) tightly clamped by the limiting flange (7);
the outer side surface of the limiting flange (7) is designed to be an inclined surface, so that the limiting flange (7) can be conveniently clamped into the clamping groove (11);
the main clamping arm (3) is composed of two parts, one part close to the articulated shaft (4) is of an arc-rod-shaped structure, the auxiliary clamping arm (5) is composed of two parts, and one part close to the articulated shaft (4) is of an arc-rod-shaped structure, so that the arc parts of the main clamping arm (3) and the auxiliary clamping arm (5) are attached to the arc surface of the outer side of the pipe (6) when the pipe (6) is clamped, the clamping attachment surface is further increased, and the clamping stability is better;
the balls (8) on the same group of clamping arms are in a group, the diameters of the balls (8) in the same group are gradually reduced from the middle to two ends, the binding surface of the middle position clamping arm and the pipe fitting (6) is the largest, the binding area of the middle position balls (8) and the pipe fitting (6) is increased, the area of a clamping point is increased, and the clamping stability is improved;
the main clamping arm (3) and the auxiliary clamping arm (5) are in hinged fit, so that the angle between the main clamping arm (3) and the auxiliary clamping arm (5) can be adjusted, the pipe fitting (6) is suitable for pipe fittings (6) of different sizes, and the application range is wider;
the ball (8) is matched with the supporting spring to support and clamp the pipe fitting (6), so that the pipe fitting (6) cannot be loosened or tightened too much when being clamped, and the clamping and positioning effects on the pipe fitting (6) are improved;
when the pipe fitting (6) is bent, the three groups of clamping arms are disassembled to adjust the position, so that the bending position can be avoided by adjusting the clamping points, and the pipe fitting (6) is prevented from being pushed and clamped when bent;
when the pipe fitting (6) is pushed, the design that the ball (8) rotates along with the pipe fitting can ensure the fluency of the pipe fitting (6) in the feeding process and support the pipe fitting (6);
the aim of clamping the pipe fitting (6) at multiple points is fulfilled when the pipe fitting (6) is machined.
Claims (9)
1. The utility model provides a machining pipe fitting multiple spot holder which characterized by: the inner wall of the outer fixing sleeve is provided with a plurality of mounting grooves at equal intervals and is distributed annularly, the guide strips are arranged in the mounting grooves, the two sides of each guide strip are respectively provided with a clamping groove, the clamping grooves extend from one end to the other end of each guide strip, a main clamping arm is arranged in the outer fixing sleeve, one end of each main clamping arm is provided with a limiting flange and is clamped in the clamping groove on each guide strip, the included angle between the limiting flange and the main clamping arm is an acute angle, an auxiliary clamping arm is arranged in the outer fixing sleeve, one end of each auxiliary clamping arm is hinged with the other end of the auxiliary clamping arm through a hinge shaft, the other end of each auxiliary clamping arm is provided with a limiting flange and is clamped in the clamping groove on each guide strip, the main clamping arm and the auxiliary clamping arms are symmetrical, the main clamping arm consists of two parts, one part close to the hinge shaft is of an arc-shaped rod-shaped structure, the auxiliary clamping arm consists of two parts, and one part close to the hinge, the angle such as three group's centre gripping arms is arranged in the external fixation cover, and place along external fixation cover axis equidistance, main centre gripping arm inboard is opened there is the bar groove, the bar inslot on the main centre gripping arm is arranged respectively to a plurality of supporting spring, the main centre gripping arm inboard is arranged in to the clamp plate, and it is corresponding with the inboard bar groove of main centre gripping arm, it has the bar groove to assist the inboard division of centre gripping arm, a plurality of supporting spring arrange the upper slitter inslot of supplementary centre gripping arm respectively in, it is inboard to assist the centre gripping arm in to arrange the clamp plate, and it is corresponding with the inboard bar groove of supplementary centre gripping arm, it has a plurality of through-holes to open on the clamp plate, and with a.
2. A multi-point gripper for pipe machining according to claim 1, wherein the angle between said stop flange and said secondary gripper arm is acute.
3. A multi-point gripper for machining pipes according to claim 2, characterized in that the outer side of the limiting flange is beveled.
4. A multi-point gripper for machining pipes according to claim 1 wherein the balls follow the pipe as it is advanced to ensure smooth feeding of the pipe and to hold the pipe.
5. The multi-point gripper for machining pipes as claimed in claim 4, wherein when the pipe is bent, the three sets of gripper arms are detached to adjust the position of the pipe, so that the bending position can be avoided by adjusting the gripping points, and the pipe can be prevented from being pushed and stuck when the pipe is bent.
6. A multi-point gripper for machined pipes according to claim 1 wherein the balls on the same set of gripper arms are in one set and the diameter of the balls in the same set decreases from the middle towards the ends.
7. A multi-point gripper for machining pipes according to claim 6 in which the balls are rotatably disposed in the through-holes and are in contact with respective support springs.
8. A multi-point gripper for machining pipes according to claim 7 in which the balls cooperate with support springs to support the pipe in clamping position.
9. A multi-point holder for a machined pipe according to claim 1, wherein the walls of said pockets are provided with rubber projections.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911122739.9A CN110722480B (en) | 2019-11-16 | 2019-11-16 | Multi-point clamp holder for machining pipe fitting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911122739.9A CN110722480B (en) | 2019-11-16 | 2019-11-16 | Multi-point clamp holder for machining pipe fitting |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110722480A true CN110722480A (en) | 2020-01-24 |
| CN110722480B CN110722480B (en) | 2021-09-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911122739.9A Active CN110722480B (en) | 2019-11-16 | 2019-11-16 | Multi-point clamp holder for machining pipe fitting |
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| Country | Link |
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| CN (1) | CN110722480B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008030685A2 (en) * | 2006-09-08 | 2008-03-13 | Arc Machines, Inc. | Clamp |
| CN201922932U (en) * | 2010-12-07 | 2011-08-10 | 奇瑞汽车股份有限公司 | Floatable supporting mechanism for gear-shifting bracing wire |
| CN103600254A (en) * | 2013-11-06 | 2014-02-26 | 桂林电子科技大学 | Clamping device |
| US20140109368A1 (en) * | 2012-10-19 | 2014-04-24 | Gerrithendrik HIETLAND | Line up tool |
| CN207448296U (en) * | 2017-11-13 | 2018-06-05 | 青岛科技大学 | It is a kind of available for the variable-diameter pipe Clamp detected automatically |
| CN207827584U (en) * | 2018-01-17 | 2018-09-07 | 常州长荣纺织有限公司 | A kind of double-joint type tube gripper of spool conveyer |
-
2019
- 2019-11-16 CN CN201911122739.9A patent/CN110722480B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008030685A2 (en) * | 2006-09-08 | 2008-03-13 | Arc Machines, Inc. | Clamp |
| CN201922932U (en) * | 2010-12-07 | 2011-08-10 | 奇瑞汽车股份有限公司 | Floatable supporting mechanism for gear-shifting bracing wire |
| US20140109368A1 (en) * | 2012-10-19 | 2014-04-24 | Gerrithendrik HIETLAND | Line up tool |
| CN103600254A (en) * | 2013-11-06 | 2014-02-26 | 桂林电子科技大学 | Clamping device |
| CN207448296U (en) * | 2017-11-13 | 2018-06-05 | 青岛科技大学 | It is a kind of available for the variable-diameter pipe Clamp detected automatically |
| CN207827584U (en) * | 2018-01-17 | 2018-09-07 | 常州长荣纺织有限公司 | A kind of double-joint type tube gripper of spool conveyer |
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| Publication number | Publication date |
|---|---|
| CN110722480B (en) | 2021-09-28 |
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