CN117600946A - A valve lifter end face grinder and its processing technology - Google Patents

Abstract

The invention belongs to the technical field of valve tappet processing, and relates to a valve tappet end face grinding machine and a processing technology thereof, wherein the valve tappet end face grinding machine comprises a frame, a grinding mechanism, a feeding mechanism, a clamping mechanism and a movable positioning mechanism; the feeding mechanism comprises a material rack and a supporting frame, and the supporting frame is movably connected with the bracket and the clamping jaw; the clamping mechanism comprises a moving table, and the moving table is provided with a valve tappet placing frame, a horizontal adjusting component and a driving component; the movable positioning mechanism comprises a fifth electric push rod and a sensor group, and the sensor group is electrically connected with the electric cabinet. According to the invention, the workpiece to be polished is automatically fed into the clamping mechanism through the feeding mechanism, and is fixed through the driving assembly and the horizontal adjusting assembly, so that the stability of the valve tappet in the polishing process is ensured, the moving positioning mechanism can accurately position the moving position of the valve tappet, the polishing efficiency and the polishing precision are further improved, the sensor group and the electric cabinet are matched to control the feeding mechanism and the clamping mechanism to orderly carry out, and the continuous feeding polishing is ensured.

Description

A kind of valve lifter end face grinder and its processing technology

Technical field

The invention belongs to the technical field of valve lifter processing, and specifically relates to a valve lifter end surface grinder and its processing technology.

Background technique

The car engine is an important part of the car, and the valve lifter is a small part inside the engine. The engine's valvetrain consists of two parts: the valve group and the valve transmission group. The valve lifter is a major component of the valve transmission group in addition to the camshaft. The valve lifter is generally a stepped shaft and is the follower of the cam. The function of this workpiece is to transmit the movement and force from the cam to the push rod or valve. It also bears the lateral force exerted by the cam and transmits it to the push rod or valve. Block or cylinder head.

During the production process, workers usually place the quenched workpiece on the workpiece support of the centerless grinder and load the workpiece manually. This results in high labor costs, low automation, and low processing efficiency.

The invention patent with publication number CN114012520B discloses a valve lifter processing equipment, which includes a quenching device for quenching the workpiece and a grinding device provided on one side of the quenching device for grinding the workpiece. The quenching device It includes a quenching cabinet, a feed conveyor frame set on one side of the quenching case to transport workpieces to be quenched, and an intermediate conveyor frame set on one side of the quenching case to transport workpieces after quenching. The adjacent two sides of the quenching case are respectively A first clamping mechanism is provided for clamping and placing the workpieces of the feeding conveyor frame in the quenching machine box, and clamping and placing the quenched workpieces in the quenching machine case on the middle conveyor frame; the grinding device includes a first clamping mechanism arranged on the middle conveyor frame. The centerless grinder on the side, and the second clamping mechanism provided on the centerless grinder to clamp the workpiece on the intermediate conveyor frame and place it on the workpiece support of the centerless grinder.

The grinding device of the valve lifter processing equipment in this patent has the following shortcomings during use:

1. Although semi-automatic loading of valve lifters can be achieved, it is necessary to install a new limit table for loading after the previous limit table is finished loading. If the loading process is performed on the last valve of the previous limit table, When the tappet is transported to the grinding fixture, there may be situations where the loading seat and loading arm drive the clamping jaws to move and accidentally injure the loading personnel. If the machine is stopped and the limit table is replaced, work efficiency will be delayed;

2. When the workpiece is inserted into the fixture for grinding, there may be cases where the fixture clamps the workpiece incorrectly or not in place, resulting in a decrease in the grinding pass rate. Moreover, the fixture does not move after clamping the workpiece, and the grinding wheel rotates against the valve. The end face of the tappet is polished, and the end face is unevenly polished;

3. The loading and unloading of workpieces are completed by the loading seat and loading arm driving the clamping jaws. The polished workpieces need to be manually picked up one by one, which is time-consuming and laborious, and the polished workpieces are unloaded above the limit table. When feeding, the polished workpiece will contain swarf powder, which will contaminate the loading limiter and make the unpolished workpiece stained with swarf powder. The swarf powder will affect the grinding process of the workpiece, causing the end surface of the workpiece to be damaged. Uneven sanding conditions.

Contents of the invention

The object of the present invention is to provide a valve lifter end surface grinder and its processing technology to solve the problems raised in the above background technology.

In order to achieve the above technical objectives, the technical solution of the present invention is:

A valve lifter end face grinder includes a frame and a grinding mechanism. The grinding mechanism is located on the frame. The grinding mechanism includes a spindle. One end of the spindle is connected to a motor and the other end is connected to a grinding wheel. The machine The rack is also equipped with a loading mechanism, a clamping mechanism and a mobile positioning mechanism;

The loading mechanism includes a tilted material rack, which is movably connected to a limit rod through a biaxial cylinder. The material rack is fixed on the frame through a support frame, and the lower part of the support frame is passed through a flip assembly. A bracket is movably connected, and a clamping claw is movably connected to the support frame through a moving component;

The clamping mechanism includes a moving platform. The bottom of the moving platform is hinged to the frame. The top of the moving platform is fixed with a valve lifter placement frame and a horizontal adjustment assembly. The valve lifter placement frame is close to the valve lifter placement frame. The grinding wheel is set, the horizontal adjustment component is located on one side of the valve lifter placement frame, the valve lifter placement frame is provided with a groove, and the moving platform is provided with a driving assembly on the side away from the material rack. , the driving assembly is provided with a clamping wheel, the clamping wheel cooperates with the valve lifter placing frame to form a valve lifter clamping space, and the frame is located below the valve lifter clamping space. The location is equipped with slides;

The mobile positioning mechanism includes a fifth electric push rod, the fifth electric push rod is fixed on the frame, and the push rod of the fifth electric push rod is connected to the mobile platform, and the frame is remote from One end of the grinding wheel is fixed with a sensor group. The sensor group is electrically connected to an electric control box. The electric control box is connected with the biaxial cylinder, the turning component, the moving component, the driving component, the horizontal adjustment component and the fifth electric pusher. Rod electrical connection.

As an improvement, the flip assembly includes a first electric push rod fixed to one side of the bottom of the support frame, the push rod of the first electric push rod is hinged with a first connecting rod, and the first connecting rod The bottom of the support frame is fixedly connected with a first rotating rod, and the first connecting rod is perpendicular to the first rotating rod. The bottom of the support frame is fixedly provided with a first mounting block, and the first rotating rod penetrates the first rotating rod. A mounting block is rotatably connected to the first mounting block, and the end of the first rotating rod is fixedly connected to the bracket.

As a further improvement, the bracket includes a bracket rod, two placement blocks are arranged side by side on the bracket rod, and a V-shaped groove is provided on the placement block.

As a further improvement, the mobile assembly includes a mounting platform fixedly connected to the upper part of the support frame. A second installation block and a third installation block are fixedly provided on the installation platform. A third installation block is fixedly provided on the top of the support frame. Two electric push rods. The output end of the second electric push rod is hinged with a second connecting rod. The bottom of the second connecting rod is hinged with a second rotating rod. The second rotating rod penetrates the second mounting block. and a third mounting block and is rotationally connected to the second mounting block and the third mounting block. One end of the second rotating rod extending out of the mounting platform is fixedly connected to a fourth mounting block. The middle part of the fourth mounting block A parallel guide sleeve and a third electric push rod are fixedly provided. The guide sleeve is slidably connected to the guide rod. The top of the guide rod is fixedly connected to the push rod of the third electric push rod through a transmission plate. The bottom end of the guide rod is connected to a rotating cylinder, and the bottom of the rotating cylinder is connected to the clamping jaw.

As a further improvement, the material rack includes two sets of unloading rods, a unloading channel is formed between the two sets of unloading rods, a support plate is provided above the two sets of unloading rods, and one side of the support plate The side wall is fixedly connected to the support frame through a connecting plate, and both sides of the support plate are fixedly connected to the sides of the two groups of unloading rods through connecting pieces. Each group of the unloading rods includes two up and down inclined Set of round poles.

As a further improvement, the limiting rod is an L-shaped limiting rod, the longitudinal rod of the limiting rod is fixedly connected to the output end of the biaxial cylinder, and the horizontal rod of the limiting rod extends into the lower material channel.

As a further improvement, the horizontal adjustment assembly includes a fixed frame fixedly arranged on the top of the mobile platform, the fixed frame is slidably connected to the mobile frame, and the fixed frame and the mobile frame are threadedly connected with screw rods;

A fourth electric push rod is provided on one side wall of the moving frame. The push rod of the fourth electric push rod penetrates the side wall of the moving frame and is fixedly connected to a sliding column. One end of the sliding column penetrates the Move the other side wall of the box.

As a further improvement, the driving assembly includes a sixth electric push rod, one end of the sixth electric push rod is hinged on one side of the bottom of the mobile platform, and the other end of the sixth electric push rod is hinged with a third connecting rod, the third connecting rod is movably connected to the fifth mounting block through the third rotating rod, the fifth mounting block is fixedly connected to one side of the mobile platform, the fifth mounting block is located on the sixth Above the electric push rod, the third rotating rod penetrates the fifth mounting block and is fixedly connected to a fourth connecting rod. The top of the fourth connecting rod is fixedly connected to a fifth connecting rod. The fifth connecting rod The end is rotatably connected to the clamping wheel.

As a further improvement, the frame is fixedly provided with a sensor mounting plate, and the sensor group is fixedly installed on the sensor mounting plate. The sensor group includes a first sensor, a second sensor and a third sensor arranged horizontally. , the end of the moving platform away from the grinding wheel is provided with a positioning block;

The first sensor, the second sensor and the third sensor are electrically connected to the electric control box, and the electric control box is connected to the first electric push rod, the second electric push rod, the third electric push rod and the fourth electric push rod. The push rod, the fifth electric push rod, the sixth electric push rod, the dual-axis cylinder, the rotating cylinder and the clamping jaw are electrically connected.

A processing technology for the valve lifter end face, using the above-mentioned valve lifter end face grinder for processing, including the following steps:

Step S1: Place the valve lifter to be processed in the unloading channel of the material rack. The flip assembly drives the bracket to flip upward to the bottom of the material rack. The biaxial cylinder drives the limit rod to shrink, causing the valve lifter to drop to the bottom of the material rack. on the bracket, and then the biaxial cylinder drives the limit rod to extend into the unloading channel;

Step S2: The flipping assembly drives the bracket to flip downwards to the horizontal state, the moving assembly drives the clamping jaw to clamp the valve lifter, and then the moving assembly drives the clamping claw to rotate 180° and move the valve lifter to the valve lifter placement rack, and then The clamping wheel is driven by the driving assembly to place the valve lifter in the groove of the valve lifter placement frame. The horizontal adjustment assembly moves to one end of the valve lifter and continues to push the valve lifter toward the grinding wheel;

Step S3: The motor drives the grinding wheel to rotate, and the fifth electric push rod pushes the moving stage to move. Driven by the moving stage, the valve lifter moves in an arc around the hinge axis. During the movement, the end surface of the valve lifter contacts the grinding wheel for grinding. After grinding is completed, the clamping wheel releases the valve lifter, and the valve lifter slides down to the material box.

Due to the adoption of the above technical solution, the beneficial effects of the present invention are:

The valve lifter end face grinder provided by the present invention automatically feeds the valve lifter to be polished placed on the feeding mechanism into the clamping mechanism through the feeding mechanism, and fixes it through the driving assembly and the horizontal adjustment assembly to ensure that The stability of the valve lifter during the grinding process is improved. At the same time, the mobile positioning mechanism can accurately position the moving position of the valve lifter. The mobile positioning mechanism drives the valve lifter to make arc-shaped reciprocating motion during the grinding process, which can increase the friction between the grinding wheel and the valve lifter. The grinding area of the column end face further improves the grinding efficiency and grinding accuracy, and the sensor group sends the signal to the electric control box to control the work of the loading mechanism and clamping mechanism to ensure that each process during the valve lifter grinding process can be carried out continuously. ,Improve work efficiency.

By setting the motor to drive the main shaft to rotate at high speed, the main shaft then drives the grinding wheel to rotate at high speed to polish the end surface of the valve lifter. During the grinding process, the valve lifter is fixed in the valve lifter placement frame, and the position of the valve lifter is adjusted by moving the positioning mechanism. The end surface of the valve lifter can be reciprocated and polished on the grinding wheel, resulting in better polishing effect and higher polishing efficiency.

By arranging the second electric push rod and the third electric push rod to cooperate with the driving assembly, the valve lifter is transported, which increases the flexibility of the overall loading and fixing, and the processed valve lifter automatically falls into place by sliding. Collecting in designated boxes eliminates the need to manually receive items one by one, saving time and effort and greatly improving work efficiency.

Description of drawings

Figure 1 is a schematic structural diagram of the present invention;

Figure 2 is a top view of the present invention;

Figure 3 is a schematic structural diagram of the clamping mechanism and the mobile positioning mechanism;

Figure 4 is a schematic structural diagram of the loading mechanism;

Figure 5 is a side view of the loading mechanism;

Figure 6 is a schematic structural diagram of the bracket;

Among them: 1-frame, 2-spindle, 3-motor, 4-grinding wheel, 5-material rack, 6-limit rod, 7-support frame, 8-bracket, 9-clamp, 10-moving table, 11-valve lifter placement frame, 12-clamping wheel, 13-valve lifter, 14-baffle, 15-first electric push rod, 16-first connecting rod, 17-first rotating rod, 18-No. One installation block, 19-placement block, 20-installation platform, 21-second installation block, 22-third installation block, 23-second electric push rod, 24-second connecting rod, 25-second rotating rod, 26-Third electric push rod, 27-Rotating cylinder, 28-Fourth mounting block, 29-Guide sleeve, 30-Guide rod, 31-Transmission plate, 32-Dual-axis cylinder, 33-Fixed frame, 34-Moving frame , 35-screw, 36-fourth electric push rod, 37-sliding column, 38-fifth electric push rod, 39-sixth electric push rod, 40-fifth mounting block, 41-third connecting rod, 42- The third rotating rod, 43-the fourth connecting rod, 44-the fifth connecting rod, 45-sensor mounting plate, 46-the first sensor, 47-the second sensor, 48-the third sensor, 49-positioning block, 50- Bracket rod, 51-support plate, 52-connection plate, 53-slide, 54-receiving box, 55-connection piece.

Detailed ways

The present invention will be further described below in conjunction with specific embodiments and drawings. The drawings are only for illustrative purposes and represent only schematic diagrams rather than actual drawings, which cannot be understood as limitations of the present application. In order to better illustrate the embodiments of the present invention, some components of the drawings are omitted. The enlargement or reduction does not represent the size of the actual product; it is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings.

In the drawings of the embodiments of the present invention, the same or similar numbers correspond to the same or similar components; in the description of the present invention, it should be understood that if there are terms "upper", "lower", "left" and "right" The indicated orientations or positional relationships are based on the orientations or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description. They are not intended to indicate or imply that the device or element referred to must have a specific orientation or in a specific manner. The orientation structure and operation, and therefore the terms used to describe positional relationships in the drawings are only for illustrative purposes and cannot be construed as limitations to the present application. For those of ordinary skill in the art, the specific meanings of the above terms can be understood according to specific circumstances.

As shown in Figure 1-6, a valve lifter end face grinder includes a frame 1 and a grinding mechanism. The grinding mechanism is located on the frame 1. The grinding mechanism includes a spindle 2. The grinding mechanism includes a spindle 2. One end of the spindle 2 is connected The other end of the motor 3 is connected to the grinding wheel 4. The motor 3 drives the main shaft 2 to rotate at a high speed. The main shaft 2 drives the grinding wheel 4 to rotate at a high speed. The grinding wheel 4 grinds the end surface of the valve lifter 13. The frame 1 is also provided with a feeding mechanism, a clamping mechanism and a mobile positioning mechanism. Taking the direction of the top view of Figure 2 as an example, the left front side of the clamping mechanism is provided with a grinding wheel 4, the left rear side is provided with a loading mechanism, and the right front side is provided with a moving positioning mechanism. Baffles 14 are provided on the outside of the loading mechanism, clamping mechanism and mobile positioning mechanism. The baffles 14 can protect their internal structures, prevent equipment damage and protect the safety of operators.

The loading mechanism includes a tilted material rack 5. The material rack 5 includes two sets of unloading rods. A unloading channel is formed between the two sets of unloading rods. A support plate 51 is provided above the two sets of unloading rods. The support plate 51 is Both sides are fixedly connected to the sides of two sets of unloading rods through connecting pieces 55. Each set of unloading rods includes two round rods arranged at an up and down angle. The operator places multiple valve lifters 13 into the unloading channel in sequence. The valve lifter 13 can slide downward from the unloading channel due to the action of gravity. The limit rod 6 plays a blocking and limiting role on the valve lifter 13 on the material rack 5 to prevent the valve lifter 13 from sliding off the material rack 5. The limit rod 6 is telescopic, so that the limit rod 6 will move the unloading channel. The lower end is opened or blocked, so that the valve lifter 13 can be unloaded in an orderly manner from the unloading channel.

A support frame 7 is fixedly connected to the frame 1. The support frame 7 is located on one side of the material rack 5. The bottom end of the support frame 7 is fixedly connected to the frame 1. One side wall of the support plate 51 is connected to the support frame 7 through a connecting plate 52. Fixed connection, the lower side of the support frame 7 is fixedly connected with a flip assembly, the end of the flip assembly is fixedly connected with a bracket 8, the flip assembly includes a first electric push rod 15 fixedly provided on the lower side of the support frame 7, the first The push rod of the electric push rod 15 is hinged with a first connecting rod 16. The bottom of the first connecting rod 16 is fixedly connected with a horizontally arranged first rotating rod 17. The first connecting rod 16 is perpendicular to the first rotating rod 17. The support frame The bottom of 7 is fixed with a first mounting block 18. The first rotating rod 17 penetrates the first mounting block 18 and is rotationally connected with the first mounting block 18. The end of the first rotating rod 17 is fixedly connected to the bracket 8. The bracket 8 It includes a bracket rod 50 and two placement blocks 19. The two placement blocks 19 are fixed side by side on the bracket rod 50. The two placement blocks 19 are both provided with V-shaped grooves that match the valve lifter 13. The bracket The rod 50 is perpendicular to the first rotating rod 17 .

When the push rod of the first electric push rod 15 expands and contracts, the first connecting rod 16 rotates, driving the first rotating rod 17 to rotate, thereby driving the bracket rod 50 and the two placement blocks 19 to rotate, and the valve lifter 13 is removed from the blank. The channel is transferred to carriage 8.

The bracket 8 is used to receive the valve lifter 13 dropped from the unloading channel. The bracket 8 can be flipped upward to the bottom of the material rack 5, or flipped downward to a horizontal state. The support frame 7 is movably connected with a clamping claw 9 through a moving assembly, and the valve lifter 13 on the bracket 8 can be picked up and placed through the movement of the clamping claw 9 .

A biaxial cylinder 32 is provided at the top of the lower end of the support plate 51 , and the output end of the biaxial cylinder 32 is connected to the limiting rod 6 . As shown in Figure 5, the limit rod 6 is set to be L-shaped. The horizontal bar of the limit rod 6 can extend into the unloading channel of the material rack 5 to block the valve lifter 13. The longitudinal rod of the limit rod 6 The top end is fixedly connected to the output end of the biaxial cylinder 32, and the biaxial cylinder 32 drives the limit rod 6 to move horizontally.

In this embodiment, when the bracket 8 is flipped upward to the bottom of the material rack 5, there is a space for accommodating one valve lifter 13 between the bracket 8 and the bottommost valve lifter 13. At this time, the horizontal direction of the limit rod 6 The rod is pulled away from the material rack 5, so that the valve lifter 13 at the bottom can drop to a position due to gravity and fall on the bracket 8, and the valve lifter 13 adjacent to it will also drop to a position. At this time, The horizontal bar of the limit lever 6 moves horizontally and extends into the material rack 5 to resist the valve lifter 13 above to prevent it from falling due to gravity. Then the bracket 8 flips downward, and the clamping claw 9 lifts the valve lifter 13 from the bracket. Clamp on rack 8.

The mobile assembly includes a mounting platform 20 fixedly connected to the upper part of the support frame 7. The mounting platform 20 is arranged horizontally, and a parallel second mounting block 21 and a third mounting block 22 are fixedly provided on the mounting platform 20. The top of the support frame 7 is fixed with a second electric push rod 23, the push rod of the second electric push rod 23 is hinged with a second connecting rod 24, and the bottom of the second connecting rod 24 is hinged with a horizontally arranged second rotating rod 25. The second rotation rod 25 penetrates the second installation block 21 and the third installation block 22 and is rotationally connected with the second installation block 21 and the third installation block 22 . The second installation block 21 and the third installation block 22 are opposite to the second rotation rod 25 Acts as a support and limiter. One end of the second rotating rod 25 extends out of the mounting platform 20 and is fixedly connected to the fourth mounting block 28. The fourth mounting block 28 is fixedly provided with a parallel guide sleeve 29 and a third electric push rod 26. The guide sleeve 29 is slidably connected to the guide. Rod 30, the top of the guide rod 30 and the output end of the third electric push rod 26 are fixedly connected through the transmission plate 31, the bottom end of the guide rod 30 is fixedly connected to the rotating cylinder 27, and the bottom of the rotating cylinder 27 is connected with the clamping claw 9. The third electric push rod 26 drives the guide rod 30 to slide up and down in the guide sleeve 29. The guide rod 30 drives the rotating cylinder 27 and the clamping claw 9 to rise and fall, so that the clamping claw 9 can pick and place the valve lifter 13.

In this embodiment, when the push rod of the second electric push rod 23 expands and contracts, the second connecting rod 24 rotates, and the second rotating rod 25 rotates, thereby causing the third electric push rod 26 to rotate, and then drives the clamping jaw 9 connected at the bottom. The valve lifter 13 to be processed is moved back and forth between the bracket 8 and the lifter placement frame to move the valve lifter 13 to be processed from the bracket 8 to the groove of the valve lifter placement frame 11 . When the valve lifter 13 is moved from the unloading channel to the bracket 8 and laid flat, the end surface of the valve lifter 13 is located in the direction away from the material rack 5, so the end surface of the valve lifter 13 is located in the direction away from the grinding wheel 4, so, After the clamping claw 9 clamps the valve lifter 13 from the bracket 8, the rotating cylinder 27 rotates the clamping claw 9 and the valve lifter 13 horizontally 180°, and rotates the end face of the valve lifter 13 to the direction close to the grinding wheel 4. Then place it into the groove of the valve lifter placement frame 11.

The clamping mechanism includes a moving platform 10. The bottom of the moving platform 10 is hinged to the frame 1 through a hinge axis. The top of the moving platform 10 is fixed with a valve lifter placement frame 11. The valve lifter placement frame 11 is provided with a horizontal groove. , the clamping claw 9 moves the valve lifter 13 from the bracket 8 to the groove of the valve lifter placement frame 11. One side of the moving platform 10 is provided with a driving assembly. The driving assembly is provided with a clamping wheel 12. The clamping wheel 12 cooperates with the valve lifter placement frame 11 to form a valve lifter clamping space. When the valve lifter 13 is placed in the groove After centering, the clamping wheel 12 holds the valve lifter 13 to prevent the valve lifter 13 from falling and ensure stability during the grinding process.

The driving assembly includes a sixth electric push rod 39. One end of the sixth electric push rod 39 is hingedly connected to the bottom side of the moving platform 10. The other end of the sixth electric push rod 39 is hinged with a third connecting rod 41. The third connecting rod 41 is rotatably connected to the fifth mounting block 40 through the third rotating rod 42. The fifth mounting block 40 is fixedly connected to one side of the moving platform 10. The fifth mounting block 40 is located above the sixth electric push rod 39. 42 penetrates the fifth mounting block 40 and is fixedly connected to the fourth connecting rod 43. The top of the fourth connecting rod 43 is fixedly connected to the fifth connecting rod 44, and the end of the fifth connecting rod 44 is rotationally connected to the clamping wheel 12. The sixth electric push rod 39 drives the third connecting rod 41 to rotate, and then drives the third rotating rod 42 to rotate in the fifth mounting block 40. The third rotating rod 42 drives the fourth connecting rod 43 to rotate, and then the fifth connecting rod 43 rotates. 44 rotation drives the clamping wheel 12 to move, clamping and fixing the valve lifter 13 in the groove. A slideway 53 is provided below the valve lifter placement frame 11. The slideway 53 is fixedly connected to the frame 1, so that after the processed valve lifter 13 is loosened by the clamping wheel 12, it slides down along the slideway 53 to the collection box. 54 in. The valve lifter 13 can be polished by swinging back and forth on the grinding wheel 4, with good polishing effect and high polishing accuracy.

There is a horizontal adjustment component on the top of the moving platform 10. The horizontal adjustment component is located on one side of the valve lifter placement frame 11. The horizontal adjustment component can adjust the distance between the end face of the valve lifter 13 and the grinding wheel 4, and keep the polished end face. Consistent pressure makes the grinding even, so that the end face reaches the required accuracy for processing.

The horizontal adjustment assembly includes a fixed frame 33 fixedly arranged on the top of the moving platform 10 , and the inner wall of the fixed frame 33 is slidably connected to the moving frame 34 . The fixed frame 33 is internally threadedly connected with a horizontal screw rod 35 . The screw rod 35 penetrates the side walls of the fixed frame 33 and the moving frame 34 . The screw rod 35 is threadedly connected to both side walls of the moving frame 34 . The distance between the movable frame 34 and the grinding wheel 4 can be adjusted through the screw 35, so that the end surface of the valve lifter can be well polished in contact with the grinding wheel 4.

A horizontal fourth electric push rod 36 is provided on one side wall of the moving frame 34. The push rod of the fourth electric push rod 36 penetrates the side wall and is fixedly connected to the sliding column 37. The sliding column 37 is a cylindrical structure with a T-shaped cross-section. The smaller diameter end of the sliding column 37 passes through the other side wall of the moving frame 34 . The sliding column 37 is slidingly connected to the moving frame 34 . The sliding column 37 pushes the valve lifter 13 toward the grinding wheel 4 .

In this embodiment, the relative position of the movable frame 34 and the fixed frame 33 is adjusted by rotating the screw 35, thereby adjusting the sliding column 37 in the movable frame 34 to a suitable position so that it can communicate with the valve lifter 13 in the groove. offset each other, so that the pressure on the contact surface of the valve lifter 13 and the grinding wheel 4 remains consistent during the grinding process, ensuring grinding accuracy.

In this embodiment, when the bracket 8 is in a horizontal state, the valve lifter 13 in the V-shaped groove and the valve lifter placement frame 11 are located in the same straight line, which facilitates the clamping claw 9 to move the valve lifter 13 from the bracket 8 to the There are 11 valve lifter placement brackets.

Start the motor 3, drive the grinding wheel 4 to rotate through the spindle 2, place the valve lifter 13 to be processed into the unloading channel of the material rack 5, flip the bracket 8 upward to the valve lifter 13 at the bottom of the material rack 5, and then The limit rod 6 is pulled out from the unloading channel, so that the valve lifter 13 falls onto the bracket 8, and then the bracket 8 is flipped down to the level. The clamping claw 9 removes the valve lifter 13 from the bracket 8, and Transported to the groove of the valve lifter placement frame 11, at this time, the driving assembly drives the clamping wheel 12 to resist the valve lifter 13, and the horizontal adjustment assembly moves the valve lifter 13 along its axial direction, so that the end face Close to the position of the grinding wheel 4, the fifth electric push rod 38 then pushes the moving stage 10 to move the valve lifter 13 along its radial direction, so that the end surface of the valve lifter 13 is evenly ground on the grinding wheel 4.

Specifically, the mobile positioning mechanism includes a fifth electric push rod 38. The fifth electric push rod 38 is fixed on the frame 1, and the push rod of the fifth electric push rod 38 is connected to the side of the mobile platform 10 away from the driving assembly. The electric push rod 38 drives the moving platform 10 to move horizontally along the radial direction of the grinding wheel 4, so that the end surface of the valve lifter 13 is in contact with the grinding wheel 4 for grinding. The frame 1 is fixed with a sensor group that matches the moving platform 10. The sensor group Electrical connection to the electric control box. A positioning block 49 is provided at one end of the mobile platform 10 close to the sensor group, and the positioning block 49 cooperates with the sensor group. When the moving platform 10 drives the positioning block 49 to move to a suitable position, the sensor group triggers a signal to the electric control box. After receiving the electric signal, the electric control box issues an instruction so that each process can be carried out in an orderly manner.

A horizontal sensor installation plate 45 is fixedly provided on the frame 1, and a sensor group is fixedly installed on the sensor installation plate 45. The sensor group includes a first sensor 46, a second sensor 47 and a third sensor 48 arranged horizontally.

The first sensor 46 , the second sensor 47 and the third sensor 48 are electrically connected to the electric control box. The electric control box controls the motor 3 , the first electric push rod 15 , the second electric push rod 23 , the third electric push rod 26 and the fourth electric push rod 26 . The electric push rod 36, the fifth electric push rod 38, the sixth electric push rod 39, the double-axis cylinder 32, the rotating cylinder 27 and the clamping jaw 9.

When the moving stage 10 moves to the position where the valve lifter 13 is to be placed, the first sensor 46 senses the positioning block 49, triggers a signal and transmits the signal to the electric control box. After receiving this signal, the electric control box controls the third The electric push rod 26 drives the clamping claw 9 to descend, and the valve lifter 13 to be processed is placed in the groove of the valve lifter placement frame 11. The driving assembly makes the clamping wheel 12 clamp the valve lifter 13 in the groove. The fourth electric push rod 36 drives the sliding column 37 to offset the valve lifter 13, and then the push rod of the fifth electric push rod 38 extends, causing the moving platform 10, the valve lifter placement frame 11 and the valve lifter to move forward together. Until the valve lifter 13 is close to the edge of the grinding wheel 4, at the same time, the biaxial cylinder 32 drives the limit rod 6 to telescope, so that the valve lifter 13 on the material rack 5 falls into the bracket 8, and then the bracket 8 flips down to the horizontal state. .

When the end surface of the valve lifter 13 contacts the grinding wheel 4, the second sensor 47 senses the positioning block 49 and triggers a signal. At this time, the fifth electric push rod 38 continues to extend, and the valve lifter 13 continues to move forward. At the same time, the second The electric push rod 23 drives the fourth installation block 28 to move, so that the clamping claw 9 moves from above the valve lifter placement frame 11 to the bracket 8, and then clamps the valve lifter 13 on the bracket 8 and rotates it 180°. to the top of the valve lifter placement bracket 11.

When the moving platform 10 moves forward until the third sensor 48 senses the trigger signal of the positioning block 49, the electronic control box controls the push rod of the fifth electric push rod 38 to shrink, driving the moving platform 10, the valve lifter placement frame 11 and the valve lifter. The column 13 moves backward together, and the valve lifter 13 swings and grinds back and forth on the grinding wheel 4, while the bracket 8 flips upward. When the first sensor 46 is triggered again, the clamping wheel 12 loosens the processed valve lifter 13 so that the valve lifter 13 slides down along the slide and is collected. Then the clamping claw 9 moves downward to release the new valve lifter 13 to be processed. Tappet 13 is placed into the groove.

The valve lifter end face grinder provided by the embodiment of the present invention sets the motor 3 to drive the main shaft 2 to rotate at high speed, and the main shaft 2 drives the grinding wheel 4 to rotate at high speed to grind the valve lifter end surface. During the grinding process, the valve lifter 13 is fixed on In the valve lifter placement frame 11, the position of the valve lifter is adjusted by moving the positioning mechanism, so that the valve lifter end surface can be polished by reciprocating swing on the grinding wheel 4, and the polishing effect is good.

A processing technology for the end face of valve lifter 13 includes the following steps:

Step S1: Place the valve lifter 13 to be processed in the unloading channel of the material rack 5. The flip assembly drives the bracket 8 to flip upward to the bottom of the material rack 5. The biaxial cylinder 32 drives the limit rod 6 to shrink. The valve lifter 13 drops onto the bracket 8, and then the biaxial cylinder 32 drives the limit rod 6 to extend into the unloading channel;

Step S2: The flipping assembly drives the bracket 8 to flip downward to a horizontal state, the moving assembly drives the clamping claw 9 to clamp the valve lifter 13, and then the moving assembly drives the clamping claw 9 to rotate 180° and transfer the valve lifter 13 to the valve lifter. Place it in the frame 11, and then drive the clamping wheel through the driving assembly to fix the valve lifter 13 in the groove of the valve lifter placement frame 11. The horizontal adjustment assembly moves to one end of the valve lifter 13 and continues to push the valve lifter 13 to The grinding wheel moves in 4 directions;

Step S3: The motor 3 drives the grinding wheel 4 to rotate, and the fifth electric push rod 38 drives the moving table 10 to move in the radial direction of the grinding wheel 4 until the end surface of the valve lifter 13 contacts the grinding wheel 4, and the grinding wheel 4 grinds the end surface of the valve lifter 13. , after the grinding is completed, the clamping wheel 12 releases the valve lifter 13, and the grinding of the valve lifter end surface is completed.

The above-described specific embodiments of the present invention do not limit the scope of the present invention. Any other corresponding changes and modifications made based on the technical concept of the present invention shall be included in the protection scope of the claims of the present invention.

Claims (10)

1. The valve tappet end face grinding machine comprises a frame and a grinding mechanism, wherein the grinding mechanism is arranged on the frame and comprises a main shaft, one end of the main shaft is connected with a motor, and the other end of the main shaft is connected with a grinding wheel;

the feeding mechanism comprises a material rack which is obliquely arranged, the material rack is movably connected with a limiting rod through a double-shaft air cylinder, the material rack is fixed on the rack through a support frame, the lower part of the support frame is movably connected with a bracket through a turnover assembly, and the support frame is movably connected with a clamping jaw through a moving assembly;

the clamping mechanism comprises a moving table, the bottom of the moving table is hinged with the frame through a hinge shaft, the top of the moving table is fixedly provided with a valve tappet placing frame and a horizontal adjusting component, the valve tappet placing frame is close to the grinding wheel, the horizontal adjusting component is positioned on one side of the valve tappet placing frame, a groove is formed in the valve tappet placing frame, a driving component is arranged on one side, away from the material frame, of the moving table, a clamping wheel is arranged on the driving component, the clamping wheel is matched with the valve tappet placing frame to form a valve tappet clamping space, and a slide way is arranged on the frame and positioned below the valve tappet clamping space;

the movable positioning mechanism comprises a fifth electric push rod, the fifth electric push rod is fixed on the frame, the push rod of the fifth electric push rod is connected with one side of the movable table, a sensor group is fixedly arranged at one end, far away from the grinding wheel, of the frame, the sensor group is electrically connected with an electric cabinet, and the electric cabinet is electrically connected with the double-shaft air cylinder, the overturning assembly, the movable assembly, the driving assembly, the horizontal adjusting assembly and the fifth electric push rod.

2. The valve tappet face grinder of claim 1, wherein the turning assembly comprises a first electric push rod fixed to one side of the bottom of the support frame, a first connecting rod is hinged to the push rod of the first electric push rod, a first rotating rod is fixedly connected to the bottom of the first connecting rod, the first connecting rod is perpendicular to the first rotating rod, a first mounting block is fixedly arranged at the bottom of the support frame, the first rotating rod penetrates through the first mounting block and is in rotational connection with the first mounting block, and the end part of the first rotating rod is fixedly connected with the bracket.

3. The valve lifter face grinder of claim 2, wherein the bracket includes a bracket bar on which two placement blocks are arranged side by side, the placement blocks being provided with V-grooves.

4. The valve tappet face grinder of claim 2, wherein the moving assembly comprises a mounting platform fixedly connected to the upper portion of the support frame, a second mounting block and a third mounting block are fixedly arranged on the mounting platform, a second electric push rod is fixedly arranged at the top of the support frame, a second connecting rod is hinged to the output end of the second electric push rod, a second rotating rod is hinged to the bottom of the second connecting rod, the second rotating rod penetrates through the second mounting block and the third mounting block and is in rotary connection with the second mounting block and the third mounting block, a fourth mounting block is fixedly connected to one end, extending out of the mounting platform, of the second rotating rod, a guide sleeve and a third electric push rod are fixedly arranged in the fourth mounting block, a guide rod is connected to the top of the guide rod in a sliding mode, the push rod of the third electric push rod is fixedly connected with the guide sleeve through a transmission plate, a rotary cylinder is connected to the bottom of the guide rod, and a clamping jaw is connected to the bottom of the rotary cylinder.

5. The valve tappet face grinder of claim 4, wherein the material rack comprises two groups of blanking rods, a blanking channel is formed between the two groups of blanking rods, a supporting plate is arranged above the two groups of blanking rods, one side wall of the supporting plate is fixedly connected with the supporting frame through a connecting plate, two sides of the supporting plate are respectively fixedly connected with two groups of side faces of the blanking rods through connecting plates, and each group of blanking rods comprises two round rods which are arranged in an up-down inclined mode.

6. The valve lifter face grinder of claim 5, wherein the stop lever is an L-shaped stop lever, a longitudinal rod of the stop lever is fixedly connected with an output end of the double-shaft cylinder, and a transverse rod of the stop lever extends into the blanking channel.

7. The valve lifter face grinder of claim 6, wherein the horizontal adjustment assembly includes a fixed frame fixedly disposed on top of the mobile station, the fixed frame slidably coupled to a moving frame, the fixed frame and the moving frame threadably coupled to a screw;

a fourth electric push rod is arranged on one side wall of the movable frame, the push rod of the fourth electric push rod penetrates through the side wall of the movable frame and is fixedly connected with a sliding column, and one end of the sliding column penetrates through the other side wall of the movable frame.

8. The valve lifter face grinder of claim 7, wherein the driving assembly includes a sixth electric push rod, one end of the sixth electric push rod is hinged to one side of the bottom of the mobile station, the other end of the sixth electric push rod is hinged to a third connecting rod, the third connecting rod is movably connected with a fifth mounting block through a third rotating rod, the fifth mounting block is fixedly connected with one side of the mobile station, the fifth mounting block is located above the sixth electric push rod, the third rotating rod penetrates through the fifth mounting block and is fixedly connected with a fourth connecting rod, the top of the fourth connecting rod is fixedly connected with a fifth connecting rod, and the end of the fifth connecting rod is rotatably connected with the clamping wheel.

9. The valve lifter face grinder of claim 8, wherein a sensor mounting plate is fixedly arranged on the frame, the sensor group is fixedly arranged on the sensor mounting plate, the sensor group comprises a first sensor, a second sensor and a third sensor which are horizontally arranged, and a positioning block is arranged at one end of the mobile station, which is far away from the grinding wheel;

the first sensor, the second sensor and the third sensor are electrically connected with the electric cabinet, and the electric cabinet is electrically connected with the first electric push rod, the second electric push rod, the third electric push rod, the fourth electric push rod, the fifth electric push rod, the sixth electric push rod, the double-shaft cylinder, the rotary cylinder and the clamping jaw.

10. A valve lifter face machining process, characterized in that the valve lifter face grinding machine according to any one of claims 1 to 9 is used for machining, comprising the following steps:

step S1: placing a valve tappet to be processed in a blanking channel of a material rack, enabling a turnover assembly to drive a bracket to turn upwards to the bottom end of the material rack, enabling a double-shaft air cylinder to drive a limiting rod to shrink so that the valve tappet falls onto the bracket, and enabling the double-shaft air cylinder to drive the limiting rod to extend into the blanking channel;

step S2: the turnover assembly drives the bracket to turn downwards to a horizontal state, the moving assembly drives the clamping jaw to clamp the valve tappet, then the moving assembly drives the clamping jaw to rotate 180 degrees and transfer the valve tappet to the valve tappet placing frame, then the driving assembly drives the clamping wheel to place the valve tappet in a groove of the valve tappet placing frame, and the horizontal adjusting assembly moves to one end of the valve tappet and continuously pushes the valve tappet to move towards the grinding wheel;

step S3: the motor drives the grinding wheel to rotate, the fifth electric push rod pushes the moving table to move, the valve tappet moves in an arc shape around the hinge shaft under the drive of the moving table, the end face of the valve tappet is contacted with the grinding wheel to polish in the moving process, and the clamping wheel loosens the valve tappet after polishing is finished, so that the valve tappet slides to a material box through sliding.