A flat key vertical press-fitting mechanism

Abstract

A flat key vertical press-fitting mechanism comprises a press-fitting head installed on the head of a press machine, the press-fitting head comprises a press-fitting head extension rod, an intermediate block and a press-fitting guide block from top to bottom; the press-fitting head extension rod comprises an upper positioning seat and a press rod located at the lower end of the upper positioning seat, the intermediate block is slidably arranged on the press rod, and the press rod is also provided with a first return spring sleeved outside the press rod; a lower guide rod is provided at the lower end of the intermediate block, the press-fitting guide block is movably arranged on the lower guide rod and a limit head is provided at the lower end of the lower guide rod, and a second return spring is sleeved on the lower guide rod between the intermediate block and the press-fitting guide block; the beneficial effects of the present invention are: a wedge block is used to assist in the installation of a flat key in the transverse direction, the flat key in the keyway is tightly installed on the keyway, the installation accuracy is very high, and the defective rate and rework time are reduced.

Description

Technical Field

[0001] The invention relates to a flat key vertical press-fitting mechanism on a press-fitting machine. Background Art

[0002] In the current machinery industry, horizontal press-fitting is the most common method for pressing flat keys. However, in some special cases, such as when there are precision requirements on the length direction of the flat key, horizontal press-fitting cannot meet the requirements.

[0003] In these existing press-fitting methods, a press-in device is used to press the flat key into the workpiece fixed on the workpiece fixture. A stop block is provided on the keyway of the workpiece. If the stop block is too close to the keyway of the workpiece, one end of the keyway will be fixed on the stop block during the press-in process, resulting in the problem that the flat key cannot be pressed in.

[0004] If the limit block is too far away from the keyway of the workpiece, the flat key will not fit the bottom of the keyway sufficiently during the pressing process, and the flat key of the workpiece will need to be manually reworked, which greatly increases the time consumption. Summary of the invention

[0005] In order to overcome the disadvantage of poor precision in the flat key press-fitting process, the present invention provides a flat key vertical press-fitting mechanism with high press-fitting precision.

[0006] The technical solution of the present invention to solve this technical problem is: a flat key vertical press-fitting mechanism, comprising a press-fitting head installed on the head of a press machine, the press-fitting head comprising a press-fitting head extension rod, an intermediate block, and a press-fitting guide block from top to bottom;

[0007] The pressure head extension rod includes an upper positioning seat and a pressure rod located at the lower end of the upper positioning seat, the intermediate block is slidably arranged on the pressure rod, and the pressure rod is also provided with a first return spring sleeved outside the pressure rod; a lower guide rod is provided at the lower end of the intermediate block, the press-fitting guide block is movably arranged on the lower guide rod and a limit head is provided at the lower end of the lower guide rod, and a second return spring sleeved on the lower guide rod is located between the intermediate block and the press-fitting guide block;

[0008] The press-fit guide block is provided with a flat key installation groove aligned with the position of the press rod;

[0009] The middle block is provided with a wedge groove, and a wedge is movably provided in the wedge groove. The wedge is thick at the top and thin at the bottom, and the wedge is connected to a transverse slide bar. The transverse slide bar is connected to a wedge return spring to drive the wedge away from the axis. The lower end of the wedge extends into the side gap of the flat key installation groove in the press-fit guide block, and the other side of the side gap is provided with a clamping inclined surface with the same slope as the wedge inclined surface.

[0010] In order to facilitate the positioning and pressing of the workpiece, a positioning plug is provided below the press-fitting guide block, and the diameter of the positioning plug is consistent with the inner hole of the workpiece to be inserted.

[0011] A design of a wedge block, the wedge block comprises a root and a wedge head arranged in front of the root, the inner side surface of the wedge head is straight and the outer side surface has an inclination, and the outer side surface with the inclination matches the pressing inclined surface of the press-fit guide block.

[0012] In order to facilitate the up and down sliding of the extension rod, a mounting sleeve is provided at the extension rod of the intermediate block piercing head, and the extension rod is slidably arranged in the mounting sleeve.

[0013] The design of the pressure rod is that a pressure head is provided at the lower end of the pressure rod, and the pressure head includes a connecting base and a top block arranged on the connecting base.

[0014] A design of a press-fit guide block, wherein a press head groove is provided on the press-fit guide block corresponding to a press head connection base.

[0015] In order to increase the stability of the wedge, two of the transverse sliding rods and two of the wedge return springs are provided.

[0016] A method for a flat key installation groove to adsorb a flat key, wherein a vacuum generator is provided on the side of the flat key installation groove, and the flat key to be placed is adsorbed on the flat key installation groove by vacuum adsorption.

[0017] Furthermore, the upper positioning seat is provided with upper guide rods on both sides of the pressure rod, and the middle block is slidably arranged on the upper guide rods.

[0018] The positioning device is further improved in that a guide ring is provided on the outer side of the positioning plug, and the inner diameter of the guide ring is consistent with the outer diameter of the workpiece to be inserted.

[0019] When the present invention is in use: the workpiece is mounted on the seat of the workpiece table of the punching machine, the mechanism is mounted on the head of the press, the flat key is mounted in the flat key mounting groove, and then the entire head of the press descends. During the descending process, the press-fitting guide block is pushed upward by the workpiece to be mounted, and at the same time, the intermediate block is also driven upward, and the pressure rod pressure head moves downward relatively to push the flat key into the groove to be installed in the workpiece. At the same time, during the pushing process, the wedge block is pushed by the pressing inclined surface of the press-fitting guide block to press the flat key to the bottom of the key groove, so that after the pressing is completed, the bottom of the flat key is tightly fitted to the bottom of the key groove.

[0020] The beneficial effects of the present invention are as follows: a wedge is used to assist in installing a flat key in the transverse direction, the flat key in the keyway is tightly installed on the keyway, the installation accuracy is very high, and the defective rate and rework time are reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a schematic diagram of an embodiment of the present invention.

[0022] Figure 2 yes Figure 1 A is an enlarged schematic diagram.

[0023] Figure 3 It is a schematic diagram of an embodiment of the present invention in a state ready to be pressed.

[0024] Figure 4 It is a schematic diagram of a pressed-in state of an embodiment of the present invention.

[0025] Figure 5 It is a schematic diagram of a state after pressing in one embodiment of the present invention. DETAILED DESCRIPTION

[0026] The present invention is further described in detail below with reference to the accompanying drawings.

[0027] Example 1

[0028] Combined with Figures 1 to 5 A flat key vertical press-fitting mechanism comprises a press-fitting head mounted on the head of a press machine, wherein the press-fitting head comprises a press-fitting head extension rod 1, an intermediate block 2, and a press-fitting guide block 3 from top to bottom;

[0029] The pressure head extension rod 1 includes an upper positioning seat 4 and a pressure rod 5 located at the lower end of the upper positioning seat 4, the intermediate block is slidably arranged on the pressure rod 5, and the pressure rod 5 is also provided with a first return spring 7 sleeved outside the pressure rod 5; the lower end of the intermediate block 2 is provided with a lower guide rod 8, the press-fitting guide block 3 is movably arranged on the lower guide rod 8 and a limit head 9 is provided at the lower end of the lower guide rod 8, and a second return spring 10 is sleeved on the lower guide rod 8 between the intermediate block 2 and the press-fitting guide block 3;

[0030] The press-fit guide block 3 is provided with a flat key installation groove 11 in alignment with the press rod 5;

[0031] A wedge groove 12 is provided on the middle block 2, and a wedge 13 is movably provided in the wedge groove 12. The wedge 13 is thick at the top and thin at the bottom, and the wedge 13 is connected to a transverse slide bar 14. The transverse slide bar 14 is connected to a wedge return spring 15 to drive the wedge 13 away from the axis. The lower end of the wedge 13 extends into the side gap of the flat key installation groove 11 in the press-fit guide block 3, and the other side of the side gap is provided with a clamping inclined surface 16 with the same slope as the inclined surface of the wedge 13.

[0032] In order to facilitate the positioning and pressing into the workpiece, a positioning plug 17 is provided below the press-fitting guide block 3, and the diameter of the positioning plug 17 is consistent with the inner hole of the workpiece to be inserted.

[0033] A design of a wedge block 13, the wedge block 13 includes a root 18 and a wedge head 19 arranged in front of the root 18, the inner side surface of the wedge head 19 is straight and the outer side surface has an inclination, and the inclined outer side surface cooperates with the clamping inclined surface 16 of the press-fit guide block 3.

[0034] In order to facilitate the upward and downward sliding of the extension rod, a mounting sleeve 20 is provided at the location where the intermediate block 2 penetrates the extension rod 1 of the pressure head, and the extension rod is slidably arranged in the mounting sleeve 20 .

[0035] The design of the pressure rod 5 is that a pressure head 21 is provided at the lower end of the pressure rod 5 , and the pressure head 21 includes a connecting base 22 and a top block 23 arranged on the connecting base 22 .

[0036] A design of a press-fit guide block 3 , wherein a press head groove 24 is provided on the press-fit guide block 3 corresponding to a press head connection base 22 .

[0037] In order to increase the stability of the wedge 13, two transverse sliding rods 14 and two wedge return springs 15 are provided.

[0038] A method for a flat key installation groove 11 to adsorb a flat key 26, wherein a vacuum generator is provided on the side of the flat key installation groove 11, and the flat key 26 to be placed is adsorbed on the flat key installation groove 11 by vacuum adsorption.

[0039] Furthermore, the upper positioning seat 4 is provided with upper guide rods 6 on both sides of the pressure rod 5 , and the middle block 2 is slidably arranged on the upper guide rods 6 .

[0040] The positioning device is further improved in that a guide ring is further provided on the outer side of the positioning plug 17, and the inner diameter of the guide ring is consistent with the outer diameter of the workpiece to be inserted.

[0041] When the present invention is in use: the workpiece 25 is installed on the seat of the workpiece table of the punching machine, the present mechanism is installed on the head of the press, and the flat key 26 is installed in the flat key installation groove 11. Since the flat key installation groove 11 is inside, the entire head of the press then descends. During the descending process, the press-fitting guide block 3 is pushed upward by the workpiece to be installed, and at the same time, the intermediate block 2 is also driven upward. The pressure rod pressure head 21 moves downward relatively to push the flat key into the installation groove of the workpiece. At the same time, during the pushing process, the wedge block 13 is pushed by the clamping inclined surface 16 of the press-fitting guide block 3 to press the flat key to the bottom of the keyway, so that after the pressing is completed, the bottom of the flat key is tightly fitted to the bottom of the keyway.

[0042] The beneficial effects of the present invention are as follows: the wedge block 13 is used to assist in installing the flat key in the lateral direction, the flat key in the keyway is tightly installed on the keyway, the installation accuracy is very high, and the defective rate and rework time are reduced.

Claims

1. A flat key vertical press-fitting mechanism, comprising a press-fitting head mounted on a press head, characterized in that: The press-fitting head comprises, from top to bottom, a press-fitting head extension rod, an intermediate block, and a press-fitting guide block; The pressure head extension rod includes an upper positioning seat and a pressure rod located at the lower end of the upper positioning seat, the intermediate block is slidably arranged on the pressure rod, and the pressure rod is also provided with a first return spring sleeved outside the pressure rod; a lower guide rod is provided at the lower end of the intermediate block, the press-fitting guide block is movably arranged on the lower guide rod and a limit head is provided at the lower end of the lower guide rod, and a second return spring sleeved on the lower guide rod is located between the intermediate block and the press-fitting guide block; The press-fit guide block is provided with a flat key installation groove aligned with the position of the press rod; A wedge groove is provided on the middle block, and a wedge is movably provided in the wedge groove. The wedge is thick at the top and thin at the bottom, and the wedge is connected to a transverse sliding bar. The transverse sliding bar is connected to a wedge return spring to drive the wedge away from the axis, and the lower end of the wedge extends into the side gap of the flat key mounting groove in the press-fitting guide block, and the other side of the side gap is provided with a clamping inclined surface with the same slope as the wedge inclined surface; a positioning plug is provided under the press-fitting guide block, and the caliber of the positioning plug is consistent with the inner hole of the workpiece to be inserted; a pressure head is provided at the lower end of the pressure rod, and the pressure head includes a connecting base and a top block arranged on the connecting base; a pressure head groove is provided on the press-fitting guide block corresponding to the pressure head connecting base; a vacuum generator is provided on the edge of the flat key mounting groove, and the flat key to be inserted is adsorbed on the flat key mounting groove by vacuum adsorption.

2. The flat key vertical press-fitting mechanism according to claim 1, characterized in that: The wedge block comprises a root and a wedge head arranged in front of the root. The inner side surface of the wedge head is straight and the outer side surface has an inclination. The outer side surface with the inclination matches the pressing inclined surface of the press-fit guide block.

3. The flat key vertical press-fitting mechanism according to claim 1, characterized in that: A mounting sleeve is provided at the extension rod of the intermediate block piercing head, and the extension rod is slidably arranged in the mounting sleeve.

4. The flat key vertical press-fitting mechanism according to claim 1, characterized in that: The transverse sliding rod and the wedge block return spring are each provided with two.

5. The flat key vertical press-fitting mechanism according to claim 1, characterized in that: The upper positioning seat is located at both sides of the pressure rod and is provided with upper guide rods, and the middle block is slidably arranged on the upper guide rods.

6. The flat key vertical press-fitting mechanism according to claim 1, characterized in that: A guide ring is also provided on the outer side of the positioning plug, and the inner diameter of the guide ring is consistent with the outer diameter of the workpiece to be inserted.

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