Efficient piston grooving machine

Abstract

The utility model belongs to the field of piston machining equipment and relates to an efficient piston grooving machine which comprises a rack, a clamp assembly is arranged on the rack and used for containing a piston, a guide rail is further arranged on the rack, and two cutter assemblies are arranged on the guide rail in a sliding mode and arranged in the length direction of the guide rail in a spaced mode. The two tool assemblies are arranged on the two sides of the clamp assembly, tool bits of the two tool assemblies are arranged in the direction perpendicular to the guide rail in a staggered mode, the tool bits are arranged on the two sides of the clamp assembly and arranged in the direction perpendicular to the guide rail in a staggered mode, and during specific design, the staggered distance of the two tool bits is equal to the distance between two annular grooves of a piston; the two tool bits can machine two piston ring grooves at the same time, the machining efficiency is greatly improved, especially when only two piston ring grooves are machined in a piston, the grooving machine can complete machining at a time, the positions of the tool bits do not need to be replaced in the middle, operation is very convenient, the machining position is positioned at a time, and the machining precision is easy to control.

Description

Technical Field

[0001] The utility model relates to the field of piston processing equipment, in particular to a high-efficiency piston slotting machine. Background Art

[0002] The cylinder piston is the core component of the engine. The reciprocating motion of the piston converts the pressure energy of the compressed air into mechanical energy. Therefore, the piston is in a high-friction working condition. In order to reduce the friction between the piston and the cylinder body, the existing technology generally applies lubricating oil to the circumferential wall of the piston. At the same time, in order to prevent the lubricating oil from being burned on the cylinder wall to form carbon deposits, a piston oil ring and an air ring are set on the piston. The oil ring plays the role of scraping oil from the inner wall of the cylinder liner downwards, and the air ring mainly plays a sealing role between the inner wall of the cylinder liner and the piston. At present, the processing of piston oil and gas rings is mainly carried out by multi-axis CNC machine tools. For example, in the processing equipment and processing detection method of a large-bore steel piston ring groove disclosed in patent CN112476161A, the ring groove of the rotating piston is processed by translation in three directions of X, Y, and Z plus a rotating grinding wheel. When processing multiple ring grooves, the workbench drives the hydrostatic electric spindle to retreat, and the slide slides so that the grinding wheel corresponds to the second ring groove processing position to complete the processing of multiple ring grooves. This multi-axis CNC machine tool is not only expensive, but also has high cost for ordinary processing factories. In addition, the grinding wheel needs to be moved to process one ring groove, which is troublesome and inefficient. Frequent position changes make it difficult to control the processing position accuracy. Utility Model Content

[0003] The existing machines for processing piston ring grooves are generally multi-axis CNC machine tools. However, multi-axis CNC machine tools are expensive, which is costly for ordinary processing factories. In addition, the grinding wheel position needs to be moved every time a ring groove is processed, which is troublesome to operate. Frequent position changes not only have low processing efficiency, but also make it difficult to control the processing position accuracy. At least one aspect or one purpose of the present application can solve the above problems. Specifically, a high-efficiency piston grooving machine is designed, and the technical solution adopted is:

[0004] A high-efficiency piston slotting machine comprises a frame, a clamp assembly is arranged on the frame, the clamp assembly is used to place a piston, a guide rail is also arranged on the frame, two tool assemblies are slidably arranged on the guide rail, the two tool assemblies are arranged at intervals along the length direction of the guide rail, and the two tool assemblies are arranged on both sides of the clamp assembly, and the tool heads of the two tool assemblies are staggered in the direction perpendicular to the guide rail.

[0005] Preferably, each tool assembly includes a slide seat, which is slidably arranged on a guide rail, and the slide seat is connected to a first driving member arranged on a frame. A rotating driving member is provided on the slide seat, and the rotating driving member is connected to the tool head.

[0006] Preferably, the rotating drive member includes a driving motor and a reducer, the driving motor and the reducer are drivingly connected, and the output shaft of the reducer is connected to the cutter head.

[0007] Preferably, the first driving member includes a first motor, the first motor is arranged on the frame, the output shaft of the first motor is connected to a screw rod, and the screw rod is threadedly connected to the slide seat.

[0008] Preferably, the clamp assembly includes a fixed seat, which is arranged on a frame, and a motor is provided on the fixed seat. The output shaft of the motor is connected to a support roller, and a stop hole is provided on the support roller. When the support roller extends into the interior of the piston, the stop hole is aligned with the piston pin hole used to connect the piston connecting rod with the side wall of the piston, and a locking pin is inserted into the stop hole and the piston pin hole.

[0009] Preferably, the support roller is provided with a lug on the end surface away from the connection motor, and the stop hole is provided on the lug.

[0010] The utility model has the following technical effects through the above technical solution:

[0011] 1. The whole equipment has a simple structure and uses fewer structural parts to complete the purpose of grooving, which reduces the cost of the equipment.

[0012] 2. Cutting heads are arranged on both sides of the fixture assembly, and the cutting heads are staggered in the direction of the vertical guide rail. In the specific design, the staggered distance of the two cutting heads is the spacing between the two ring grooves of the piston. The two cutting heads can process two piston ring grooves at the same time, which greatly improves the processing efficiency. Especially when only two piston ring grooves are processed on the piston, the grooving machine designed in this application can complete the processing at one time without changing the position of the cutting head in the middle. It is very convenient to operate, and the processing position is located at one time, and the processing accuracy is also easy to control. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a three-dimensional diagram of the utility model;

[0014] Figure 2 This is a diagram showing the state after the piston is put on the support roller.

[0015] In the figure, 1, frame, 2, tool assembly, 3, guide rail, 4, fixture assembly, 5, piston ring groove, 6, piston, 7, piston pin hole;

[0016] 201, a rotating driving member, 202, a cutter head, 203, a sliding seat, 204, a first driving member;

[0017] 201a, reducer, 201b, drive motor;

[0018] 204a, a screw rod, 204b, a first motor;

[0019] 401. fixed seat, 402. motor, 403. support roller, 404. lug, 405. stop hole. DETAILED DESCRIPTION

[0020] In order to clearly illustrate the technical features of the present invention, the present invention is described in detail below through specific implementation methods and in conjunction with the accompanying drawings.

[0021] In addition, in the description of the present invention, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0022] like Figure 1-2 As shown, a high-efficiency piston grooving machine includes a frame 1, a fixture assembly 4 is provided on the frame 1, the fixture assembly 4 is used to place a piston 6, a guide rail 3 is also provided on the frame 1 along the left and right directions, two guide rails 3 are arranged in parallel and spaced apart in front and back, two tool assemblies 2 are slidably provided on the guide rail 3, the two tool assemblies 2 are spaced apart along the length direction of the guide rail 3 (i.e. the left and right direction), and the two tool assemblies 2 are arranged on both sides of the fixture assembly 4, and the tool heads 202 of the two tool assemblies 2 are staggered in the direction perpendicular to the guide rail 3, and the staggered distance is the spacing between the two ring grooves of the piston 6. During specific processing, the position of each tool assembly 2 on the guide rail 3 controls the depth of the piston ring groove 5, and the two tool assemblies 2 work simultaneously to process two piston ring grooves 5 on the piston 6 at one time, which is more suitable for the case where only two ring grooves are processed on the piston 6. In this case, there is no need to change the position of the tool head 202 in the middle, the processing efficiency is high, the processing position positioning is easy to control, and the processing position accuracy is high.

[0023] Furthermore, the structure of each of the above-mentioned tool assemblies 2 specifically includes a slide 203, each slide 203 is slidably set on two guide rails 3, the slide 203 is connected to a first driving member 204 set on the frame 1, the first driving member 204 drives the slide 203 to slide along the guide rail 3, and a rotating driving member 201 is provided on the slide 203, and the rotating driving member 201 is connected to the tool head 202 to drive the tool head 202 to rotate.

[0024] Furthermore, the above-mentioned rotating driving member 201 includes a driving motor 201b and a reducer 201a, and the driving motor 201b and the reducer 201a are connected in transmission. The transmission connection here is realized by belt transmission. Specifically, a pulley is connected to the output shaft of the driving motor 201b, and a pulley is connected to the reducer 201a. A belt is connected between the two pulleys. Finally, the output shaft of the reducer 201a is connected to the cutter head 202, driving the cutter head 202 to rotate at a slower speed. The first driving member 204 drives the slide 203 and the driving motor 201b, the reducer 201a, and the cutter head 202 thereon to approach the piston 6 on the fixture assembly 4 as a whole. The piston 6 rotates driven by the fixture assembly 4, and then the piston ring groove 5 is processed.

[0025] Furthermore, the structure of the first driving member 204 specifically includes a first motor 204b, which is arranged on the frame 1. For a reasonable layout, the first motor 204b is arranged at the left edge or the right edge of the frame 1. The output shaft of the first motor 204b is connected with a screw rod 204a, which is threadedly connected to the slide 203. The first motor 204b drives the screw rod 204a to rotate, thereby driving the slide 203 to move linearly along the guide rail 3. The screw rod 204a nut transmission is adopted here because the movement here is used to control the slotting depth, and the screw rod 204a nut has high control accuracy, which can improve the depth processing requirements of the piston ring groove 5.

[0026] Furthermore, the specific structure of the above-mentioned clamp assembly 4 includes a fixed seat 401, which is arranged on the frame 1 and higher than the upper surface of the frame 1. This is to support the piston 6 and ensure that the piston 6 can rotate. A motor 402 is provided on the fixed seat 401, and the output shaft of the motor 402 is connected to a support roller 403. The diameter of the support roller 403 is slightly smaller than the inner diameter of the piston 6, so that the support roller 403 can extend into the interior of the piston 6. In order to prevent the motor 402 from driving the support roller 403 and then driving the piston 6 to rotate and slot, the piston 6 will not rotate relative to each other, a stop hole 405 is provided on the support roller 403. When the support roller 403 extends into the interior of the piston 6, the stop hole 405 is aligned with the side wall of the piston 6 for connecting the piston connecting rod piston pin hole 7, and finally the locking pin is inserted into the stop hole 405 and the piston pin hole 7 to fix the piston 6 on the support roller 403.

[0027] Furthermore, the stop hole 405 is disposed at the end of the support roller 403. Specifically, a lug 404 is provided on the end face of the support roller 403 away from the connection motor 402 (i.e., the rear end face), and the stop hole 405 is disposed up and down on the lug 404. The purpose of such arrangement is to enable the locking pin to pass through the two symmetrical piston pin holes 7 of the piston 6 and connect with the stop hole 405, so that the piston 6 and the support roller 403 are subjected to balanced force, and the locking pin is also easily fixed at both ends so that it will not be thrown out during the rotation of the piston 6.

[0028] The above-mentioned specific implementation manner cannot be used as a limitation on the protection scope of the present utility model. For those skilled in the art, any replacement, improvement or change made to the implementation manner of the present utility model falls within the protection scope of the present utility model.

[0029] The matters not described in detail in the present invention are all known technologies to those skilled in the art.

Claims

1. A high-efficiency piston slotting machine, characterized in that: The machine comprises a frame, on which a clamp assembly is provided, the clamp assembly is used to place a piston, the frame is also provided with a guide rail, on which two tool assemblies are slidably provided, the two tool assemblies are spaced apart along the length direction of the guide rail, and the two tool assemblies are arranged on both sides of the clamp assembly, and the tool heads of the two tool assemblies are staggered in a direction perpendicular to the guide rail.

2. A high-efficiency piston slotting machine according to claim 1, characterized in that: Each of the tool assemblies comprises a slide seat, which is slidably arranged on the guide rail and connected to a first driving member arranged on the frame. A rotating driving member is provided on the slide seat, and the rotating driving member is connected to the tool head.

3. A high-efficiency piston slotting machine according to claim 2, characterized in that: The rotary drive member comprises a drive motor and a reducer, the drive motor and the reducer are in transmission connection, and the output shaft of the reducer is connected to the cutter head.

4. A high-efficiency piston slotting machine according to claim 2 or 3, characterized in that: The first driving member includes a first motor, the first motor is arranged on the frame, the output shaft of the first motor is connected to a screw rod, and the screw rod is threadedly connected to the slide seat.

5. The high-efficiency piston slotting machine according to claim 1, characterized in that: The clamp assembly includes a fixed seat, which is arranged on the frame. A motor is provided on the fixed seat. The output shaft of the motor is connected to a support roller. A stop hole is provided on the support roller. When the support roller extends into the interior of the piston, the stop hole is aligned with the piston pin hole for connecting the piston connecting rod on the side wall of the piston, and a locking pin is inserted into the stop hole and the piston pin hole.

6. A high-efficiency piston slotting machine according to claim 5, characterized in that: The support roller is provided with a lug at the end surface away from the end surface connected to the motor, and the stop hole is arranged on the lug.

Images