CN107378448B

CN107378448B - Fixture and method for press mounting of crescent key of roller body

Info

Publication number: CN107378448B
Application number: CN201710737489.4A
Authority: CN
Inventors: 冯清华; 耿加军; 雷如刚; 徐发俊; 陈毓伟; 万枝平
Original assignee: Jinhu Changsheng Power Machinery Part Co ltd
Current assignee: Jinhu Changsheng Power Machinery Part Co ltd
Priority date: 2017-08-24
Filing date: 2017-08-24
Publication date: 2023-04-14
Anticipated expiration: 2037-08-24
Also published as: CN107378448A

Abstract

The invention discloses a roller body crescent key press-mounting fixture and a method thereof, wherein the roller body crescent key press-mounting fixture comprises an end plate fixed on a main shaft, a positioning groove for accommodating a workpiece is arranged at the center of the outer end surface of the end plate, the axis of the main shaft and the central line of an inner hole of the workpiece are collinear, a press plate for pressing the workpiece is arranged on the end plate outside the positioning groove, the press plate is fixed on the outer end surface of the end plate through a bolt, a cutter moving hole is arranged at the bottom of the positioning groove, and the hole wall of the workpiece exceeds the hole wall of the cutter moving hole. The fixed mode is firm, the operation is swift, and eccentric ring hole and main shaft collineation, hole and its coaxial rotation do not deviate the centre of a circle when the main shaft rotates, make things convenient for the lathe tool to get into hole processing, the main shaft also can get into the hole and carry out the abrasive machining of interior round pore wall when not rotating the bistrique, and a clamping is fit for the processing of dual mode, improves production efficiency.

Description

Fixture and method for press mounting of crescent key of roller body

Technical Field

The invention relates to the field of machining, in particular to a roller body crescent key press-fitting clamp and a method thereof.

Background

The traditional assembly method of the roller body crescent key is that the crescent key is manually knocked into the key groove by a hammer to complete assembly, and the roller body is a cylinder, so that the roller body is difficult to shake in a handheld manner when being positioned, difficult to position and difficult to accurately knock, the crescent key is easily damaged when being knocked and assembled, the use of the roller body is influenced, and in addition, the manual knocking is low in efficiency and labor consumption.

Disclosure of Invention

The invention overcomes the existing defects and discloses a roller body crescent key press-fitting clamp and a method thereof, which are convenient and quick to use

It is quick and accurate and firm to assemble.

The invention further improves the scheme that:

roller body crescent key pressure equipment anchor clamps, including the bottom plate, the top of bottom plate is equipped with the sleeve pipe, sheathed tube both sides sliding connection has the guide bar, the guide bar is vertical to be fixed on the bottom plate, the cover is equipped with support sleeve's spring on the guide bar between bottom plate and the sleeve pipe, sheathed tube transversal bottom of personally submitting is equipped with open-ended arc, and the work piece is inserted and is established the opening of sleeve pipe bottom is exposed to the intraductal and lower part of work piece of cover, be equipped with on the bottom plate with the parallel spout of sleeve axis waits to assemble crescent key and is located in the spout, still including the locating pin that passes work piece upper end symmetry hole, be equipped with on the sheathed tube terminal surface and hold the spacing recess of locating pin, the locating pin card is in the keyway of work piece bottom is relative with the crescent key in the spout when spacing recess, be equipped with the locating piece that waits to assemble crescent key offset in the spout of bottom plate.

The improved scheme of the invention is that the sleeve is horizontally arranged above the bottom plate in the transverse direction, the sliding groove transversely penetrates through the bottom plate, and the key groove of the workpiece is opposite to the crescent key when the crescent key is abutted against the positioning block.

The invention has the further improvement scheme that the positioning pin is a diameter-variable cylindrical pin, the diameter of the rear section of the positioning pin is larger than that of the front section of the positioning pin, the front section of the positioning pin penetrates through symmetrical holes on two sides of the top of the workpiece, a step surface between the front section and the rear section is propped against the workpiece, and the parts of the rear section and the front section of the positioning pin penetrating through the workpiece are clamped in the limiting grooves.

In a further improvement of the invention, the use method of the clamp comprises the following steps: 1) Transversely inserting the workpiece into the sleeve to enable the symmetrical holes at the top of the workpiece to exceed the end face where the positioning groove is located; 2) After the positioning pin is inserted into the symmetrical hole of the workpiece, the workpiece is pushed into the sleeve until the positioning pin is clamped in the positioning groove; 3) The arc-shaped surface of the crescent key is upwards placed in the sliding groove, and the crescent key is pushed to slide in the sliding groove until the crescent key is abutted against the positioning block; 4) The sleeve is pressed downwards to press the crescent key into the key groove.

In a further improvement of the invention, the fixture is mounted on a table of a punch press, a punch of the punch press is aligned with the top of the sleeve, and the punch press is operated to press the sleeve down by the punch in step 4.

Compared with the prior art, the invention has the following advantages:

the invention has simple operation, the workpiece is placed in the sleeve, the positioning pin is used for positioning to prevent the workpiece from rotating, the penetration angle of the positioning pin just enables the crescent key to be opposite to the crescent key groove, the sleeve is pressed down to press the crescent key into the crescent key groove, the structure is simple, the use is rapid and convenient, the assembly is accurate and firm, and the assembly efficiency of the crescent key is greatly improved.

Drawings

FIG. 1 is a side end view of the clamp of the present invention.

FIG. 2 is a side end view of a workpiece clamped on a fixture.

Fig. 3 is a schematic front view of a workpiece clamped to a fixture.

Fig. 4 is a front view of the workpiece.

Description of the preferred embodiment

As shown in fig. 1, 2, 3 and 4, the roller body crescent key press-fitting clamp comprises a base plate 1, a sleeve 2 is arranged above the base plate 1, guide rods 3 are slidably connected to two sides of the sleeve 2, the guide rods 3 are vertically fixed on the base plate 1, a spring 4 for supporting the sleeve is sleeved on the guide rods between the base plate 1 and the sleeve 2, and the sleeve can automatically reset after the sleeve is pressed downwards. The cross section of the sleeve 2 is arc-shaped, the bottom of the cross section of the sleeve is provided with an opening, the workpiece 5 is inserted into the sleeve 2, the lower part of the workpiece is exposed out of the opening at the bottom of the sleeve 2, and the key groove for assembling the crescent key is arranged outside the opening and is positioned at the lowest edge of the workpiece. Be equipped with the spout 6 parallel with the 2 axis of sleeve pipe on the bottom plate 1, treat that assembly crescent moon key 7 is located spout 6, still including the locating pin 8 that passes 5 upper end symmetric holes of work piece, be equipped with on the terminal surface of sleeve pipe 2 and hold locating pin 8's spacing recess 9, locating pin 8 card are in the keyway 10 of work piece bottom is relative with the crescent moon key 7 in the spout 6 when in the spacing recess 9, be equipped with in the spout 6 of bottom plate 1 and treat the locating piece 11 that assembly crescent moon key 7 offseted.

In this embodiment, the horizontal level setting of sleeve pipe 2 is in bottom plate 1 top, bottom plate 1 is transversely run through to spout 6, and keyway 10 and crescent 7 of work piece are relative when crescent 7 offsets with locating piece 11, and crescent 7 goes into the spout from the left opening card of bottom plate and alright side slip.

Locating pin 8 is the reducing cylindric lock, the back end diameter of locating pin 8 is greater than the anterior segment diameter, the symmetry hole 12 of work piece top both sides is run through to the anterior segment of locating pin 8, it is preceding, step face between the back end supports work piece 5, the part card that the work piece was passed to the back end of locating pin 8 and anterior segment is established in spacing recess 9, the locating pin card alright pin work piece in spacing recess, prevent that the work piece from rotating, the locating pin slope sets up, the back end is higher than the anterior segment at last, can not be because of the symmetry hole of gravity roll-off work piece.

The clamp is used, and comprises the following steps: 1, transversely inserting a workpiece into a sleeve to enable a symmetrical hole at the top of the workpiece to exceed the end face where a positioning groove is located; 2, inserting the positioning pins into the symmetrical holes of the workpiece, and then pushing the workpiece into the sleeve until the positioning pins are clamped in the positioning grooves; 3, the arc-shaped surface of the crescent key is upwards placed in the sliding groove, and the crescent key is pushed to slide in the sliding groove until the crescent key is abutted against the positioning block; 4, pressing down the sleeve to press the crescent key into the key groove.

The jig is mounted on the table of the press with the punch of the press aligned with the top of the casing and the press is operated to cause the punch 13 to depress the casing in step 4. The workpiece is fixed, and the crescent key on the bottom plate can be pressed into the key groove by pressing the punch downwards.

Claims

1. The contact roller body crescent moon key pressure equipment anchor clamps, characterized by: including bottom plate (1), the top of bottom plate (1) is equipped with sleeve pipe (2), the both sides sliding connection of sleeve pipe (2) has guide bar (3), guide bar (3) are vertical to be fixed on bottom plate (1), the cover is equipped with support sleeve's spring (4) on the guide bar between bottom plate (1) and sleeve pipe (2), the transversal bottom of personally submitting of sleeve pipe (2) is equipped with open-ended arc, and work piece (5) are inserted and are established in sleeve pipe (2) and the lower part of work piece expose the opening of sleeve pipe (2) bottom, be equipped with on bottom plate (1) with spout (6) that sleeve pipe (2) axis is parallel, treat that assembly crescent moon key (7) is located in spout (6), still including locating pin (8) that pass work piece (5) upper end symmetry hole, be equipped with on the terminal surface of sleeve pipe (2) and hold spacing recess (9) of locating pin (8), locating pin (8) card is in keyway (10) of work piece bottom and the interior relative with spout (6) of crescent moon key (7) when spacing recess (9), be equipped with the crescent moon key (11) that awaits things stand by.

2. The roller body crescent key press-fitting jig according to claim 1, characterized in that: the sleeve (2) is horizontally arranged above the bottom plate (1), the sliding groove (6) transversely penetrates through the bottom plate (1), and the crescent key (7) is opposite to the key groove (10) of the workpiece when the positioning blocks (11) are abutted.

3. The roller body crescent key press-fitting jig according to claim 1, wherein: the locating pin (8) is a reducing cylindrical pin, the diameter of the rear section of the locating pin (8) is larger than that of the front section, the front section of the locating pin (8) penetrates through symmetrical holes (12) in two sides of the top of the workpiece, a step surface between the front section and the rear section supports against the workpiece (5), and the rear section of the locating pin (8) and the part of the front section penetrating through the workpiece are clamped in the limiting groove (9).

4. The method for press mounting the crescent key of the roller body is characterized in that: use of a clamp according to any of claims 1 to 3, comprising the steps of: 1) Transversely inserting the workpiece into the sleeve to enable the symmetrical holes at the top of the workpiece to exceed the end face where the positioning groove is located; 2) After the positioning pin is inserted into the symmetrical hole of the workpiece, the workpiece is pushed into the sleeve until the positioning pin is clamped in the positioning groove; 3) The arc-shaped surface of the crescent key is upwards placed in the sliding groove, and the crescent key is pushed to slide in the sliding groove until the crescent key is abutted against the positioning block; 4) The sleeve is pressed downwards to press the crescent key into the key groove.

5. A method of press fitting a crescent key of a roller body according to claim 4, wherein: the fixture is mounted on a table of a punch press, a punch of the punch press is aligned with the top of the casing, and the punch press is operated to press the casing with the punch (13) in step 4.