A supplementary clamping device for piston pin chamfering

Abstract

The application provides an auxiliary clamping device for piston pin chamfering, and relates to the technical field of piston pin processing. The top of the clamping base is fixedly provided with a limiting plate on the front and back sides; a conversion groove is formed in the inner side of the limiting plate at the upper and lower ends; a clamping sliding base is slidably arranged on the top of the clamping base; a connecting piece is fixedly arranged at the bottom end of the clamping sliding base; a plug-in groove is formed in the inner side of the clamping sliding base; and a clamping piece is plug-in arranged in the plug-in groove. When the device is idle, the clamping piece is connected with the clamping sliding base only through magnetic attraction, and can be easily disassembled by pulling out, which greatly improves the replacement efficiency of the clamping piece, especially suitable for high-frequency maintenance scenes. The clamping assembly is assembled by bolts, and the bolts need to be disassembled one by one during replacement, which is complicated, especially in batch production scenes. Frequent disassembly can significantly reduce the replacement efficiency of the clamping assembly and increase the equipment downtime.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of piston pin processing, in particular to an auxiliary clamping device for piston pin chamfering. BACKGROUND

[0002] Chamfering the piston pin can improve the processing workability, assembly performance and use reliability, reduce tool wear, reduce assembly resistance and disperse stress concentration. The chamfering is usually processed by grinding, and the clamping device is needed for accurate positioning during the process to ensure the chamfer angle and size accuracy and ensure the processing quality stability.

[0003] In actual use, the existing clamping device for piston pin chamfering usually fixes the assembly for directly clamping the workpiece in the corresponding position of the device through bolts. However, the clamping assembly is prone to wear due to friction and extrusion during long-term contact and stress with the piston pin. The worn assembly will cause uneven clamping force and decreased positioning accuracy, and then cause the problem of unstable clamping of the piston pin, affecting the chamfering processing quality. Therefore, it needs to be replaced in time. However, due to the bolt assembly method, the bolts need to be disassembled one by one during replacement, and the operation steps are complicated. Especially in the batch production scene, frequent disassembly and assembly will significantly reduce the replacement efficiency of the clamping assembly, increase the equipment downtime, and adversely affect the production continuity. SUMMARY

[0004] The present application relates to an auxiliary clamping device for piston pin chamfering. When the clamping slide is slid outward, the conversion column will slide into the flat groove part from the inclined groove part of the conversion groove. In the process of the conversion column entering the flat groove from the inclined groove, the limiting slide and the limiting column will move outward, so that the limiting column slides out of the inside of the limiting hole, canceling the positioning of the clamping piece. Therefore, after the clamping device is in an idle state, the clamping piece only remains magnetically connected with the clamping slide, and can be easily disassembled by pulling out, improving the disassembly efficiency of the clamping piece.

[0005] The application discloses a kind of auxiliary clamping devices for piston pin chamfer, specifically includes: clamping base, the top of the clamping base is fixedly installed with limit plate on both sides of front and back;The top of the limit plate is centrally provided with a clamping groove, and the inside of the clamping groove is clamped with a workpiece;The inside of the limit plate is provided with a conversion slot on both ends of upper and lower sides;The top of the clamping base is slidably installed with clamping slide;The bottom end of the clamping slide is fixedly installed with a connecting piece;The inside of the clamping slide is provided with an insertion slot;The inside of the insertion slot is inserted with a clamping piece;The upper and lower sides of the clamping piece are provided with a limiting hole;The inside of the clamping piece is provided with a cleaning hole;The outer wall of the clamping slide is arranged with a guide column in a symmetrical manner up and down;The guide column is slidably sleeved with a limiting slide;The inside of the limiting slide is fixedly installed with a limiting column in a central position;The inside of the limiting column is inserted into the limiting hole;The front and back ends of the limiting slide are fixedly installed with a conversion column;The outside of the clamping slide is inserted with a cleaning pipeline.

[0006] Further, a double-shaft motor is fixedly installed in the inside of the clamping base in a central position;Two drive screws are rotatably installed in the inside of the clamping base on both ends of left and right sides;The inner ends of the two drive screws are respectively connected with the two output shafts of the double-shaft motor by means of spline connection.

[0007] Further, the inner end of the conversion slot is of an inclined structure;The inside of the installation slot is fixedly installed with an opening and closing piece, and the inside of the installation slot is fixedly installed with an opening and closing slot;The opening and closing slot is of a trapezoidal structure;The connecting piece is connected with the drive screw by means of wire teeth.

[0008] Further, two magnetic suction heads are symmetrically arranged in the inside of the insertion slot;The inside of the clamping piece is of an arc structure;The inside of the clamping piece is attached to the outer wall of the workpiece;The outer end of the clamping piece is arranged with two magnetic suction holes in a symmetrical manner from front to back;The magnetic suction head is magnetically connected in the inside of the magnetic suction hole.

[0009] Further, the limiting slide is of a U-shaped structure;A spring one is jointly embedded between the limiting column and the clamping slide;The conversion column is slidably installed in the inside of the conversion slot.

[0010] Further, the inside of the cleaning pipeline is fixedly installed with a cleaning head;The cleaning head is inserted into the cleaning hole;The outer end of the cleaning pipeline is inserted with a connecting hose.

[0011] Further, the outer end of the connecting hose is connected with external gas supply equipment;The inside of the cleaning pipeline is slidably installed with a closing plate on both sides of front and back;The inside of the cleaning pipeline and the outside of the closing plate are jointly embedded with a spring two.

[0012] Further, the driving screw rotates counterclockwise to drive the clamping slide to move outward relative to the connecting piece; the conversion column slides into the flat groove part from the inclined groove part of the conversion groove when the clamping slide moves outward.

[0013] Further, the conversion column moves outward to slide out of the inside of the limiting hole.

[0014] Further, the outer end of the closing plate slides into the inside of the opening and closing groove when the clamping slide moves outward; the outer end of the closing plate moves outward after sliding into the inside of the opening and closing groove; the closing plate moves outward to cancel the plugging of the inside of the cleaning pipe.

[0015] The application provides an auxiliary clamping device for piston pin chamfering, which has the following beneficial effects:

[0016] 1. When the clamping device is ready for use, the clamping piece is stably fixed in the clamping slide through the limiting structure to provide reliable structural support for the operation of the device, ensure the stability of the clamping process and avoid shaking, and guarantee the machining precision; when the device is idle, the clamping piece is connected with the clamping slide only through magnetic attraction, without complex operation, and can be disassembled by simply pulling out, which greatly improves the replacement efficiency of the clamping piece, especially suitable for high-frequency maintenance scenes; in the switching process of the idle state, the temporary cooperation of the closing plate and the opening and closing groove triggers the release of airflow of the cleaning pipe, and the clamping surface of the clamping piece is automatically blown, which clears the obstacles in advance for the next use, further guarantees the clamping stability, reduces the risk of failure caused by impurities, and balances the use reliability and maintenance convenience.

[0017] 2. When the clamping slide moves inward, the cooperation of the closing plate and the opening and closing groove will link to control the cleaning pipe to be closed after the temporary opening of the inside, so as to release a section of airflow, which is discharged from the inner surface of the clamping piece through the cleaning head and the cleaning hole, so that the device can automatically complete double cleaning through airflow before the clamping action is executed, that is, the clamping surface of the clamping piece is blown to remove residual impurities, and the contact surface of the clamping workpiece is cleaned at the same time to avoid impurities being mixed between the two, so as to ensure that the clamping surface is tightly attached, effectively prevent problems such as clamping loosening, positioning deviation or scratching of the surface of the workpiece caused by impurities, and at the same time, the manual cleaning step is saved, which significantly improves the clamping stability and machining efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the application, the following will briefly introduce the drawings of the embodiments.

[0019] The drawings in the following description only relate to some embodiments of the application, and are not limited to the application.

[0020] In the drawings:

[0021] Figure 1 The schematic diagram showing the overall structure of the present application is shown.

[0022] Figure 2 The schematic diagram showing the front side limiting plate removed state structure of the present application is shown.

[0023] Figure 3 The schematic diagram showing the front view perspective structure of the present application is shown. Figure 2

[0024] Figure 4 The schematic diagram showing the clamping slide and clamping piece structure of the present application is shown.

[0025] Figure 5 The schematic diagram showing the clamping slide and clamping piece split state structure of the present application is shown.

[0026] Figure 6 The schematic diagram showing the clamping slide and clamping piece half cut structure of the present application is shown.

[0027] Figure 7 The schematic diagram showing the clamping slide and cleaning pipe half cut structure of the present application is shown.

[0028] Figure 8 The schematic diagram showing the cleaning pipe and opening and closing piece half cut structure of the present application is shown.

[0029] List of reference signs

[0030] 1, clamping base; 2, double shaft motor; 3, drive screw; 4, limiting plate; 5, conversion groove; 6, opening and closing piece; 7, opening and closing groove; 8, workpiece; 9, clamping slide; 10, connecting piece; 11, plug-in groove; 12, magnetic suction head; 13, clamping piece; 14, limiting hole; 15, magnetic suction hole; 16, cleaning hole; 17, guide column; 18, limiting slide; 19, limiting column; 20, spring one; 21, conversion column; 22, cleaning pipe; 23, cleaning head; 24, connecting hose; 25, closing plate; 26, spring two. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical scheme and advantages of the embodiments of the present application more clear, the technical scheme of the embodiments of the present application will be described clearly and completely below with reference to the drawings of the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the described embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0032] Please refer to Figures 1 to 8 : Embodiment one ​

[0033] The application provides an auxiliary clamping device for piston pin chamfering, which comprises a clamping base 1, a limiting plate 4 fixedly installed on the top of the clamping base 1, a clamping groove formed in the top of the limiting plate 4 and a workpiece 8 clamped in the clamping groove, a conversion groove 5 formed in the inner side of the limiting plate 4, a clamping sliding base 9 slidingly installed on the top of the clamping base 1, a connecting piece 10 fixedly installed at the bottom end of the clamping sliding base 9, an insertion groove 11 formed in the inner side of the clamping sliding base 9, a clamping piece 13 inserted into the insertion groove 11, a limiting hole 14 formed in the upper and lower sides of the clamping piece 13, a cleaning hole 16 formed in the inner side of the clamping piece 13, a guide column 17 arranged in an upper and lower symmetrical mode on the outer wall of the clamping sliding base 9, a limiting sliding plate 18 slidingly sleeved on the guide column 17, a limiting column 19 fixedly installed at the inner side of the limiting sliding plate 18, the limiting column 19 inserted into the limiting hole 14, a conversion column 21 fixedly installed at the front and back ends of the limiting sliding plate 18 and a cleaning pipeline 22 inserted into the outer side of the clamping sliding base 9, wherein the workpiece 8 is placed at a suitable position of the limiting plate 4 by artificial operation, then a double-shaft motor 2 is started to make the driving lead screw 3 rotate, the driving lead screw 3 moves inward with the two connecting pieces 10 and the two clamping sliding bases 9 under the action of the driving lead screw 3, the clamping sliding base 9 moves inward with the clamping piece 13, the conversion column 21 slides into the inclined groove part from the flat groove part of the conversion groove 5 in the inward moving process, the conversion column 21 moves inward with the limiting sliding plate 18 and the limiting column 19 in the inward moving process, the limiting column 19 is inserted into the limiting hole 14, and the clamping piece 13 has sufficient stability when contacting and clamping the workpiece 8.

[0034] The embodiment two, on the basis of the embodiment one, the inside central position of the clamping base 1 is fixedly installed with the double-shaft motor 2; the inside left and right ends of the clamping base 1 are rotatably installed with the drive lead screw 3; the inner ends of the two drive lead screws 3 are respectively connected with the two output shafts of the double-shaft motor 2 by means of the spline connection; the inner end of the conversion groove 5 is of an inclined structure; the inner side of the limiting plate 4 is provided with the installation groove, and the inside of the installation groove is fixedly installed with the opening and closing piece 6; the inner side of the opening and closing piece 6 is provided with the opening and closing groove 7; the opening and closing groove 7 is of a trapezoidal structure; the connecting piece 10 is connected with the drive lead screw 3 through the thread; the inside of the plug-in groove 11 is symmetrically provided with the two magnetic suction heads 12; the inner side of the clamping piece 13 is of an arc structure; the inner side of the clamping piece 13 is attached to the outer wall of the workpiece 8; the outer end of the clamping piece 13 is symmetrically arranged with the two magnetic suction holes 15; the magnetic suction head 12 is magnetically connected in the inside of the magnetic suction hole 15; the limiting slide plate 18 is of a U-shaped structure; the limiting column 19 and the clamping slide base 9 are jointly embedded with the spring one 20; the conversion column 21 is slidably installed in the inside of the conversion groove 5; in the process of moving in the clamping slide base 9, the outer end of the closing plate 25 will enter the inside of the opening and closing groove 7 and then slide out in the process of moving in, in this process, the inside of the cleaning pipeline 22 is blocked and then opened and closed, so that the airflow is released for a period of time in the process of moving in the clamping piece 13, the airflow enters the inside of the cleaning hole 16 through the cleaning head 23, and the cleaning hole 16 is discharged from the inner surface of the clamping piece 13, the airflow is used to realize the cleaning of the clamping surface of the clamping piece 13, and the airflow blowing direction is inward, which can also clean the clamping surface of the workpiece 8 placed in advance, avoid the existence of impurities between the clamp and the workpiece 8, and cause the clamping to be loose or the workpiece 8 to be damaged.

[0035] The embodiment three is based on the embodiment two, the inner end of the cleaning pipe 22 is fixedly installed with the cleaning head 23; the cleaning head 23 is inserted into the inside of the cleaning hole 16; the outer end of the cleaning pipe 22 is inserted with the connecting hose 24; the outer end of the connecting hose 24 is connected with the external gas supply equipment; the inner side of the cleaning pipe 22 is slidably installed with the closing plate 25; the outer side of the closing plate 25 is jointly embedded with the spring two 26 between the inner side of the cleaning pipe 22; when the driving screw 3 is counterclockwise rotated, the clamping slide 9 is driven to move outward relative to the connecting piece 10; when the clamping slide 9 slides outward, the conversion column 21 slides into the flat groove part from the inclined groove part of the conversion groove 5; the conversion column 21 moves outward with the limiting slide 18 and the limiting column 19 during the process of sliding into the flat groove from the inclined groove; the limiting column 19 slides out from the inside of the limiting hole 14 after moving outward; the outer end of the closing plate 25 slides into the inside of the opening and closing groove 7 when the clamping slide 9 moves outward; the outer end of the closing plate 25 moves outward relative after sliding into the inside of the opening and closing groove 7; the closing plate 25 moves outward to cancel the blockage of the inside of the cleaning pipe 22; after the chamfering is completed, the double-shaft motor 2 is reversed to make the driving screw 3 counterclockwise rotated, the clamping slide 9 is driven to move outward relative to the connecting piece 10, the conversion column 21 slides into the flat groove part from the inclined groove part of the conversion groove 5 when the clamping slide 9 slides outward, the limiting slide 18 and the limiting column 19 move outward during the process of sliding into the flat groove from the inclined groove of the conversion column 21, the limiting column 19 slides out from the inside of the limiting hole 14 to cancel the positioning of the clamping piece 13, so that the clamping piece 13 only remains the magnetic attraction connection with the clamping slide 9 after the clamping device is in the idle state, which can be simply pulled out for disassembly, improves the disassembly efficiency of the clamping piece 13, and the outer end of the closing plate 25 slides into the inside of the opening and closing groove 7 and then slides out, which makes the closing plate 25 temporarily cancel the blockage of the inside of the cleaning pipe 22, releases the airflow again to complete the cleaning of the clamping surface of the clamping piece 13 once.

[0036] The working principle of the embodiment is as follows: when in use, first, the workpiece 8 is placed on the corresponding position of the limiting plate 4 by manual operation, and then the dual-shaft motor 2 is started to drive the driving lead screw 3 to rotate clockwise, under the action of the driving lead screw 3, the two connecting pieces 10 drive the two clamping sliding seats 9 to move inward synchronously, so that the clamping sliding seat 9 moves inward synchronously with the clamping piece 13, in the inward moving process, the conversion column 21 slides into the inclined groove part from the flat groove part of the conversion groove 5, in this process, the conversion column 21 moves inward with the clamping sliding seat 9, and drives the limiting sliding plate 18 and the limiting column 19 to move inward at the same time, finally, the limiting column 19 is inserted into the limiting hole 14 to provide stable positioning for the clamping piece 13, so as to ensure the stability when the clamping piece 13 contacts and clamps the workpiece 8, at the same time, when the clamping sliding seat 9 moves inward, the outer end of the closing plate 25 first enters the opening and closing groove 7, and then slides out of the opening and closing groove 7, this action makes the inside of the cleaning pipeline 22 open and then close, so that a gas flow is released in the inward moving process of the clamping piece 13, the gas flow enters the cleaning hole 16 through the cleaning head 23 and is discharged from the inner surface of the clamping piece 13, which not only realizes the cleaning of the clamping surface of the clamping piece 13, but also blows the surface to be clamped of the workpiece 8, so as to avoid the influence of impurities on the clamping effect, after the above-mentioned action is completed, the workpiece 8 is stably clamped, at this time, chamfering of the workpiece 8 can be performed through the chamfering device, after the chamfering is completed, the dual-shaft motor 2 is reversed to drive the driving lead screw 3 to rotate counterclockwise, under the transmission of the connecting piece 10, the clamping sliding seat 9 moves outward relatively, in this process, the conversion column 21 slides back from the inclined groove part of the conversion groove 5 to the flat groove part, drives the limiting sliding plate 18 and the limiting column 19 to move outward, and makes the limiting column 19 slide out of the limiting hole 14 to release the positioning of the clamping piece 13, when the clamping device is in an idle state, the clamping piece 13 is only connected with the clamping sliding seat 9 through magnetic attraction, at this time, the clamping piece 13 can be disassembled simply by pulling out, which is convenient and fast, at the same time, the outer end of the closing plate 25 slides into the opening and closing groove 7 again and then slides out, so that the cleaning pipeline 22 releases the gas flow again, and the clamping surface of the clamping piece 13 is cleaned again to prepare for the next use.

[0037] In this paper, the following points need to be noted:

[0038] 1. The drawings of the embodiments of the present application only relate to the structures involved in the embodiments of the present application, and other structures can refer to the usual design.

[0039] 2. In the case of no conflict, the embodiments of the present application and the features in the embodiments can be combined to obtain new embodiments.

[0040] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited to this, any person skilled in the art can easily think of changes or replacements within the technical range disclosed by the present application, which should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. An auxiliary clamping device for use in chamfering a piston pin, comprising: Clamping base (1), the top of the clamping base (1) is fixedly installed with a limiting plate (4) on both sides; a clamping groove is formed in the middle of the top of the limiting plate (4), and a workpiece (8) is clamped in the clamping groove; characterized in that a conversion groove (5) is formed in the inner side of the limiting plate (4); a clamping slide (9) is slidably installed on the top of the clamping base (1); a connecting piece (10) is fixedly installed at the bottom end of the clamping slide (9); an insertion groove (11) is formed in the inner side of the clamping slide (9); a clamping piece (13) is inserted into the insertion groove (11); limiting holes (14) are formed in the upper and lower sides of the clamping piece (13); a cleaning hole (16) is formed in the clamping piece (13); guide columns (17) are arranged in a symmetrical manner on the outer wall of the clamping slide (9); a limiting slide (18) is slidably sleeved on the guide columns (17); a limiting column (19) is fixedly installed at the middle of the inner side of the limiting slide (18); the inner end of the limiting column (19) is inserted into the limiting hole (14); conversion columns (21) are fixedly installed at the front and rear ends of the limiting slide (18); a cleaning pipeline (22) is inserted into the outer side of the clamping slide (9); A double-shaft motor (2) is fixedly installed in the middle of the inner side of the clamping base (1); drive screws (3) are rotatably installed at the left and right ends of the inner side of the clamping base (1); the inner ends of the two drive screws (3) are respectively connected with the two output shafts of the double-shaft motor (2) by means of splines; the inner end of the conversion groove (5) is in an inclined structure; an installation groove is formed in the inner side of the limiting plate (4), and an opening and closing piece (6) is fixedly installed in the installation groove; an opening and closing groove (7) is formed in the inner side of the opening and closing piece (6); the opening and closing groove (7) is in a trapezoidal structure; the connecting piece (10) is connected with the drive screw (3) through a thread; two magnetic suction heads (12) are symmetrically arranged in the inner end of the insertion groove (11); the inner side of the clamping piece (13) is in an arc structure; the inner side of the clamping piece (13) is attached to the outer wall of the workpiece (8); two magnetic suction holes (15) are symmetrically arranged in the outer end of the clamping piece (13); the magnetic suction heads (12) are magnetically connected in the magnetic suction holes (15); A cleaning head (23) is fixedly installed at the inner end of the cleaning pipeline (22); a closing plate (25) is slidably installed at the inner end of the cleaning pipeline (22); a spring (26) is embedded between the outer side of the closing plate (25) and the inner side of the cleaning pipeline (22); when the clamping slide (9) moves outward, the outer end of the closing plate (25) will slide into the inner end of the opening and closing groove (7); after the outer end of the closing plate (25) slides into the inner end of the opening and closing groove (7), it will move outward relative to the outer end; after the closing plate (25) moves outward, the closing of the inner end of the cleaning pipeline (22) will be cancelled.

2. A supplementary clamping device for chamfering of a piston pin according to claim 1, characterized in that The limiting slide plate (18) is in the shape of a trapezoid; a spring (20) is embedded between the limiting column (19) and the clamping slide (9); the conversion column (21) is slidingly installed inside the conversion groove (5).

3. A jacking device for use in chamfering a piston pin, according to claim 1, wherein: The cleaning head (23) is inserted into the cleaning hole (16); the outer end of the cleaning pipe (22) is inserted with a connecting hose (24).

4. A supplementary clamping device for chamfering of a piston pin according to claim 3, characterized in that The outer end of the connecting hose (24) is connected with an external air supply device.

5. A jacking device for use in chamfering a piston pin, according to claim 1, wherein: When the driving screw (3) rotates counterclockwise, the clamping slide (9) moves outward relative to the connecting piece (10); when the clamping slide (9) slides outward, the conversion column (21) slides into the flat groove part from the inclined groove part of the conversion groove (5).

6. A supplementary clamping device for chamfering of a piston pin according to claim 5, characterized in that During the process that the conversion column (21) enters the flat groove from the inclined groove, the limiting slide plate (18) and the limiting column (19) move outward; after the limiting column (19) moves outward, it slides out of the limiting hole (14).

Images