Cutter for inner ring groove of cylinder hole of engine cylinder

Abstract

The invention discloses an engine air cylinder hole inner ring groove cutter, and relates to the technical field of ring groove cutters, the engine air cylinder hole inner ring groove cutter comprises a cutter body and a cutter handle front rod, the center point of the cutter body is provided with an inner hole, four flange connecting holes are equidistantly formed in the circumference of the cutter body, and eight blade mounting steps are equidistantly arranged on the circumference of the circumferential surface of the cutter body; according to the machining tool, the problem that the machining efficiency of annular grooves produced by multiple types of small-batch engine cylinder bodies is low is solved, the machining efficiency of the annular grooves in two cylinder holes is doubled at a time, the machining efficiency is improved, and the machining efficiency is improved. The designed and manufactured hard alloy blade is used for machining a composite R chamfer ring groove, the groove type is consistent with the drawing design, it is guaranteed that the sealing ring is completely attached to the ring groove, the distance between the two ring grooves can be adjusted by adjusting the adjusting spacer bush, and the adjusting spacer bush can be replaced to adjust the distance when the distances between the ring grooves of the same type of an engine cylinder body are different.

Description

Technical Field

[0001] The invention relates to the technical field of annular groove cutters, in particular to annular groove cutters in cylinder bores of engine cylinders. Background Art

[0002] The engine block is the main component of the engine and the foundation for installing all parts of the engine. The engine uses the cylinder block to install the crankshaft, camshaft, valve, oil supply, lubrication, cooling and other mechanisms as a whole to convert thermal energy into kinetic energy. The cylinder bore of the engine block is the power source of the engine and the key area for piston movement and fuel combustion. It directly determines the various performance indicators of the engine. Its processing accuracy directly determines the core technical requirements of an engine such as power, stability, and noise.

[0003] The V-type 6-cylinder, 8-cylinder, 12-cylinder, 16-cylinder engine blocks and the inline 6-cylinder engine blocks are designed with double ring grooves, and the ring grooves are processed by a special machine. Due to the small batch size of cylinder blocks and the large number of models, the production of special machine fixtures is complicated and the cost is too high, which leads to reduced processing efficiency. Summary of the invention

[0004] 1. Technical issues to be resolved

[0005] In view of the deficiencies in the prior art, the present invention provides an engine cylinder bore inner ring groove tool to solve the technical problem that V-type 6-cylinder, 8-cylinder, 12-cylinder, 16-cylinder engine blocks and inline 6-cylinder engine blocks are designed with double ring grooves and use special machines to process the ring grooves. Due to the small batch size of cylinder blocks and the large number of models, the special machine fixture is complicated and expensive to manufacture, which leads to reduced processing efficiency.

[0006] (II) Technical solution

[0007] To achieve the above objectives, the present invention is implemented through the following technical solutions:

[0008] A tool for inner groove of cylinder bore of engine cylinder, comprising a tool body and a tool handle front rod, an inner hole is opened at the center point of the tool body, four flange connection holes are opened equidistantly on the circumference of the tool body, eight blade mounting steps are opened equidistantly on the circumferential surface of the tool body, a carbide blade is fixedly mounted on each of the blade mounting steps, the right end of the tool handle front rod is connected to the tool handle tail rod by thread, a flange fixing plate is fixedly mounted on the left end of the tool handle front rod, an adjusting sleeve for adjusting the spacing is arranged between the two tool bodies, four sliding grooves are opened equidistantly on the circumferential surface of the tool handle front rod, a fixing mechanism is arranged in each sliding groove of the tool handle front rod, the fixing mechanism comprises a locking plate, a rotating shaft is fixedly mounted through the side end of the locking plate, the adjusting sleeve is an open disc, both side surfaces of the adjusting sleeve are opened with L-shaped grooves, and both side surfaces of the adjusting sleeve are opened with threaded grooves.

[0009] Preferably, there are two blades on the flange fixing plate, a pressure plate is slidably mounted on the left end of the front rod of the blade handle, a threaded rod is threadedly mounted in the threaded groove of the adjusting sleeve, and an L-shaped insert plate is provided between the threaded rod and the adjusting sleeve.

[0010] Preferably: the rotating shaft is rotatably installed in the sliding groove opened in the front rod of the knife handle, and the right end of the locking plate is provided with a push rod, and the push rod is slidably installed on the right end of the front rod of the knife handle and fits with the left side of the tail rod of the knife handle, and the left end of the flange fixing plate is connected to the inner hole opened in the knife body and the flange connecting hole.

[0011] Preferably, the angle of each carbide blade is 90°, the width of the carbide blade is 6±0.1, and the radius of the arc transition is 2 mm. The blade body is made of alloy structural steel, and the hardness after quenching and tempering is HRC28-35. The blade body is quenched, and the hardness after treatment is HRC50-55.

[0012] (III) Beneficial effects

[0013] 1. The present invention solves the problem of the efficiency limitation of ring groove processing in the production of multi-variety and small-batch engine cylinder blocks. The processing efficiency of two ring grooves in the cylinder bore is doubled by completing the processing at one time. The designed and manufactured carbide blade processes the composite R chamfered ring groove. The groove type is consistent with the design on the drawing, ensuring that the sealing ring and the ring groove are fully fitted. The spacing between the two ring grooves can be adjusted by adjusting the adjusting sleeve. If the spacing between the same type of ring grooves of the engine cylinder block is different, the adjusting sleeve can be replaced to adjust the spacing.

[0014] 2. The present invention uses a locking plate and a push rod disposed inside the front rod of the tool handle, and a threaded connection between the front rod of the tool handle and the tail rod of the tool handle to squeeze the push rod, thereby fixing the pressure plate, two annular groove tools and the front rod of the tool handle together. During installation, the operation is very simple and easy to install and disassemble, which greatly improves the efficiency of disassembling and assembling the annular groove tools in the device.

[0015] 3. The present invention designs the pressure plate and the annular groove tool in the device as a quick disassembly and assembly structure, so that when adding or reducing the adjusting sleeve, there is no need to remove the pressure plate and the annular groove tool. The adjusting sleeve can be replaced by just loosening the tail rod and the front rod of the tool handle a little through the thread, which greatly improves the efficiency of replacing the adjusting sleeve. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention and implement it according to the contents of the specification, the following is a detailed description of the preferred embodiments of the present invention in conjunction with the accompanying drawings.

[0017] Figure 1 It is a structural diagram of the present invention as a whole;

[0018] Figure 2 It is a structural diagram of the cemented carbide blade of the present invention;

[0019] Figure 3 It is a structural diagram of the adjusting spacer of the present invention;

[0020] Figure 4 It is a structural diagram of the front rod of the handle of the present invention;

[0021] Figure 5 It is a structural diagram of the top rod of the present invention;

[0022] Figure 6 For the present invention Figure 3 A magnified view of the structure at A;

[0023] Figure 7 For the present invention Figure 5 Enlarged view of the structure at B.

[0024] Legend: 11. Cutter body; 12. Blade mounting step; 13. Carbide blade; 14. Inner hole; 15. Flange connection hole; 21. Adjustment sleeve; 22. L-shaped groove; 24. Threaded groove; 25. L-shaped plug plate; 26. Threaded rod; 31. Tool handle tail rod; 32. Tool handle front rod; 34. Flange fixing plate; 35. Push rod; 36. Rotating shaft; 37. Slide groove; 38. Locking plate; 39. Pressure plate. DETAILED DESCRIPTION

[0025] The embodiment of the present application provides an inner ring groove tool for the cylinder bore of an engine, which effectively solves the problem that the cylinder blocks of V-type 6-cylinder, 8-cylinder, 12-cylinder and 16-cylinder engines and inline 6-cylinder engines are designed with double ring grooves and use a special machine to process the ring grooves. Since the batch size of cylinder blocks is small and the number of models is large, the production cost of the special machine fixture is complicated and excessive, which leads to reduced processing efficiency. The present invention solves the problem of narrow efficiency in ring groove processing in the production of small batches of engine cylinder blocks of multiple varieties, and the processing efficiency of two inner ring grooves of the cylinder bore is doubled at one time. The designed and manufactured cemented carbide blade processes the composite R-chamfered ring groove, and the groove type is consistent with the design on the drawing, which ensures that the sealing ring and the ring groove are fully fitted, and the spacing between the two ring grooves can be adjusted by adjusting the adjusting sleeve. The spacing between the ring grooves of the same type of engine cylinder blocks can be adjusted by replacing the adjusting sleeve.

[0026] Example

[0027] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7As shown, the technical solution in the embodiment of the present application is to effectively solve the technical problem that the V-type 6-cylinder, 8-cylinder, 12-cylinder, 16-cylinder engine cylinder block and the inline 6-cylinder cylinder block are designed with double ring grooves, and the ring grooves are processed by a special machine. Due to the small batch of cylinder blocks, the large number of models, the complex production of special machine fixtures and the high cost, the processing efficiency is reduced. The overall idea is as follows:

[0028] In view of the problems existing in the prior art, the present invention provides an engine cylinder bore inner ring groove tool, comprising a tool body 11 and a tool handle front rod 32, an inner hole 14 is opened at the center point of the tool body 11, four flange connection holes 15 are opened equidistantly on the circumference of the tool body 11, eight blade mounting steps 12 are opened equidistantly on the circumferential surface of the tool body 11, a carbide blade 13 is fixedly installed on each blade mounting step 12, a tool handle tail rod 31 is connected to the right end of the tool handle front rod 32 by threading, a flange fixing plate 34 is fixedly installed on the left end of the tool handle front rod 32, an adjusting spacer 21 for adjusting the spacing is arranged between the two tool bodies 11, four slide grooves 37 are opened equidistantly on the circumferential surface of the tool handle front rod 32, a fixing mechanism is arranged in each slide groove 37 opened on the tool handle front rod 32, the fixing mechanism comprises a locking plate 38, a rotating shaft 36 is fixedly installed through the side end of the locking plate 38, and the adjusting spacer 21 is fixedly installed on the side end of the locking plate 38. 21 is an open disc, L-shaped grooves 22 are provided on both sides of the adjusting sleeve 21, and thread grooves 24 are provided on both sides of the adjusting sleeve 21. The cutter body 11 is made of alloy structural steel, and the inner hole 14 in the cutter body 11 and its outer circumferential surface are rough-turned, and then tempered to make its hardness reach HRC28-35, and then the inner hole 14 and its outer circumferential surface are semi-finished, four flange connection holes 15 can be opened on the cutter body 11, and then eight blade mounting steps 12 are processed on the outer circumferential surface of the cutter body 11, and then the cutter body 11 is quenched to make its hardness reach HRC50-55, and then carbide blades 13 are welded on the eight blade mounting steps 12, and then the carbide blades 13 are processed to ensure that the tool angle of the carbide blade 13 is 90°, the blade width is 6±0.1 and the radius of the arc transition is 2 mm.

[0029] There are two cutter bodies 11 on the flange fixing plate 34, and a pressure plate 39 is slidably installed on the left end of the front rod 32 of the tool handle. A threaded rod 26 is installed on the inner thread of the threaded groove 24 opened in the adjusting sleeve 21, and an L-shaped insert plate 25 is provided between the threaded rod 26 and the adjusting sleeve 21. Then, the adjusting sleeve 21 between the two cutter bodies 11 is processed to ensure that the spacing between the two annular groove tools is consistent with the spacing between the annular grooves of the cylinder liner hole, and to ensure that the annular groove tool completes the processing of two annular grooves in the cylinder liner hole at one time, and the groove type and size are consistent. Moreover, the adjusting sleeve 21 in the device can be increased or decreased according to the spacing between the annular grooves of the cylinder liner hole. The L-shaped groove 22 opened on each adjusting sleeve 21 corresponds to the L-shaped insert plate 25, and can be connected to each other. Moreover, a notch is opened on the circumferential surface of the adjusting sleeve 21, which is convenient for increasing and decreasing between the two annular groove tools. Then, the runout of the annular groove tool is checked to ensure that the groove type and size of the two annular grooves processed by the annular groove tool are consistent.

[0030] The rotating shaft 36 is rotatably mounted in the slide groove 37 provided in the front rod 32 of the knife handle. The right end of the locking plate 38 is provided with a push rod 35. The push rod 35 penetrates and slides on the right end of the front rod 32 of the knife handle and fits with the left side of the tail rod 31 of the knife handle. The left end of the flange fixing plate 34 is connected with the inner hole 14 provided in the knife body 11 and the flange connecting hole 15. Moreover, the adjusting spacer 21 and the annular groove tool in the device can be disassembled very quickly. Specifically, the user rotates the knife to remove the adjusting spacer 21 and the annular groove tool. The handle tail rod 31 and the handle front rod 32 are connected by a thread, so that the handle tail rod 31 and the handle front rod 32 can be separated. After the handle tail rod 31 and the handle front rod 32 are separated, the four push rods 35 lose the squeezing force. At this time, the four locking plates 38 become loose, and then the user can pull the pressure plate 39 outward, and the pressure plate 39 will drive the locking plate 38 to rotate around the center point of the rotating shaft 36. When the locking plate 38 rotates to the handle front rod The present invention can also be used to fix the pressure plate 39 and the two annular groove tools and the front rod 32 of the knife handle by means of the locking plate 38 and the push rod 35 arranged inside the front rod 32 of the knife handle, and the threaded connection between the front rod 32 of the knife handle and the tail rod 31 of the knife handle, so as to squeeze the push rod 35, thereby fixing the pressure plate 39 with the two annular groove tools and the front rod 32 of the knife handle together. During installation, the operation is very simple and easy to install and disassemble, which greatly improves the efficiency of disassembly and assembly of the annular groove tools in the device. The present invention designs the pressure plate 39 and the annular groove tools in the device as a quick disassembly and assembly structure, so that when the adjusting spacer 21 is increased or decreased, there is no need to remove the pressure plate 39 and the annular groove tools. Only the tail rod 31 of the knife handle and the front rod 32 of the knife handle need to be loosened a little through the threads, and the adjusting spacer 21 can be replaced, which greatly improves the efficiency of replacing the adjusting spacer 21.

[0031] The included angle of each carbide blade 13 is 90°, the width of the carbide blade 13 is 6±0.1, and the radius of its arc transition is 2 mm. The blade body 11 is made of alloy structural steel, and the hardness after quenching and tempering is HRC28-35. The blade body 11 is quenched, and the hardness after treatment is HRC50-55. The present invention solves the problem of the narrow gap in the processing efficiency of ring grooves in the production of multi-variety and small-batch engine cylinder blocks, and the processing efficiency of two cylinder bore ring grooves is doubled at one time. The designed and manufactured carbide blade 13 processes the composite R chamfered ring groove, and the groove type is consistent with the design on the drawing, which ensures that the sealing ring and the ring groove are fully fitted. The spacing between the two ring grooves can be adjusted by adjusting the adjusting sleeve 21. The spacing between the same type of ring grooves of the engine cylinder block can be adjusted by replacing the adjusting sleeve 21.

[0032] Working principle:

[0033] In the first step, the cutter body 11 is made of alloy structural steel, and the inner hole 14 in the cutter body 11 and its outer circumferential surface are rough-turned, and then tempered to make its hardness reach HRC28-35, and then the inner hole 14 and its outer circumferential surface are semi-finished, four flange connection holes 15 can be opened on the cutter body 11, and then eight blade mounting steps 12 are processed on the outer circumferential surface of the cutter body 11, and then the cutter body 11 is quenched to make its hardness reach HRC50-55, and then cemented carbide blades 13 are welded on the eight blade mounting steps 12, and then the cemented carbide blades 13 are processed to ensure that the tool angle of the cemented carbide blade 13 is 90°, the blade width is 6±0.1 and the radius of the arc transition is 2 mm.

[0034] In the second step, the adjusting sleeve 21 between the two tool bodies 11 is then processed to ensure that the spacing between the two annular groove tools is consistent with the spacing between the annular grooves of the cylinder liner hole, and to ensure that the annular groove tool completes the processing of two annular grooves in the cylinder liner hole at one time, and the groove type and size are consistent. Moreover, the adjusting sleeve 21 in the device can be increased or decreased according to the spacing between the annular grooves of the cylinder liner hole. The L-shaped groove 22 opened on each adjusting sleeve 21 corresponds to its L-shaped plug plate 25, and can be connected to each other. Moreover, the circumferential surface of the adjusting sleeve 21 is provided with a notch, which is convenient for increasing and decreasing between the two annular groove tools. Then the annular groove tool runout is checked to ensure that the groove type and size of the two annular grooves processed by the annular groove tool are consistent.

[0035] The third step is that the adjustment sleeve 21 and the annular groove tool in the device can be disassembled very quickly. The specific operation is that the user can separate the handle tail rod 31 from the handle front rod 32 by rotating the handle tail rod 31 and the handle front rod 32 through the threaded connection between the handle tail rod 31 and the handle front rod 32. After the handle tail rod 31 and the handle front rod 32 are separated, the four push rods 35 lose the extrusion force, and the four locking plates 38 become loose. Then the user can pull the pressure plate 39 toward the outside, and the pressure plate 39 will drive the locking plate 38 to rotate around the center point of the rotating shaft 36. When the locking plate 38 rotates into the sliding groove 37 provided in the handle front rod 32, the pressure plate 39 can be easily taken out from the surface of the handle front rod 32, and the annular groove tool can also be conveniently removed from the handle front rod 32. The present invention uses a locking plate 38 and a push rod 35 disposed inside the front rod 32 of the shank, and a threaded connection between the front rod 32 of the shank and the tail rod 31 of the shank, to squeeze the push rod 35, thereby fixing the pressure plate 39 with the two annular groove tools and the front rod 32 of the shank. During installation, the operation is very simple and easy to install and disassemble, which greatly improves the efficiency of disassembly and assembly of the annular groove tools in the device. The present invention designs the pressure plate 39 and the annular groove tools in the device as a quick disassembly and assembly structure, so that when the adjusting spacer 21 is increased or decreased, there is no need to remove the pressure plate 39 and the annular groove tools. Only the tail rod 31 of the shank and the front rod 32 of the shank need to be loosened a little through the threads to replace the adjusting spacer 21, which greatly improves the efficiency of replacing the adjusting spacer 21.

[0036] The present invention solves the problem of the efficiency limitation of ring groove processing in the production of multi-variety and small-batch engine cylinder blocks. The processing efficiency of two ring grooves in the cylinder bore is doubled by completing the processing at one time. The designed and manufactured carbide blade 13 processes the composite R chamfered ring groove. The groove type is consistent with the design on the drawing, ensuring that the sealing ring and the ring groove are fully fitted. The spacing between the two ring grooves can be adjusted by adjusting the adjusting spacer 21. If the spacing between the same type of ring grooves of the engine cylinder block is different, the adjusting spacer 21 can be replaced to adjust the spacing.

[0037] Finally, it should be noted that: Obviously, the above embodiments are only examples for clearly explaining the present invention, and are not intended to limit the implementation methods. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived from this are still within the scope of protection of the present invention.

Claims

1. A ring groove cutter for an engine cylinder bore, comprising a cutter body (11) and a front rod of a cutter handle (32), characterized in that: An inner hole (14) is provided at the center point of the blade body (11), and four flange connection holes (15) are provided at equal intervals on the circumference of the blade body (11); The circumferential surface of the blade body (11) is provided with eight blade installation steps (12) at equal intervals, and a cemented carbide blade (13) is fixedly installed on each of the blade installation steps (12); The right side end of the handle front rod (32) is connected to the handle tail rod (31) by threading, the left side end of the handle front rod (32) is fixedly installed with a flange fixing plate (34), an adjusting sleeve (21) for adjusting the spacing is provided between the two knife bodies (11), four sliding grooves (37) are equidistantly provided on the circumferential surface of the handle front rod (32), and a fixing mechanism is provided in each sliding groove (37) provided on the handle front rod (32), and the fixing mechanism includes a locking plate (38), and a rotating shaft (36) is fixedly installed through the side end of the locking plate (38); The adjusting sleeve (21) is an open disc, both sides of the adjusting sleeve (21) are provided with L-shaped grooves (22), and both sides of the adjusting sleeve (21) are provided with thread grooves (24).

2. The engine cylinder bore inner ring groove cutter according to claim 1, characterized in that: The number of the blade bodies (11) on the flange fixing plate (34) is two; Wherein, a pressure plate (39) is slidably mounted on the left end of the handle front rod (32).

3. The engine cylinder bore inner groove cutter according to claim 2, characterized in that: The threaded groove (24) provided in the adjusting spacer (21) is internally threaded with a threaded rod (26).

4. The engine cylinder bore inner ring groove cutter according to claim 3, characterized in that: An L-shaped inserting plate (25) is provided between the threaded rod (26) and the adjusting spacer (21).

5. The engine cylinder bore inner groove cutter according to claim 4, characterized in that: The rotating shaft (36) is rotatably mounted in a sliding groove (37) provided on the front rod (32) of the knife handle.

6. The engine cylinder bore inner ring groove cutter according to claim 5, characterized in that: A push rod (35) is provided at the right end of the locking plate (38); The push rod (35) is slidably mounted on the right side end of the handle front rod (32) and is fitted with the left side of the handle tail rod (31).

7. The engine cylinder bore inner groove cutter according to claim 6, characterized in that: The left end of the flange fixing plate (34) is connected to the inner hole (14) and the flange connecting hole (15) provided in the cutter body (11).

8. The engine cylinder bore inner ring groove cutter according to claim 7, characterized in that: The included angle of each of the cemented carbide blades (13) is 90°.

9. The engine cylinder bore inner ring groove cutter according to claim 8, characterized in that: The width of the cemented carbide blade (13) is 6±0.1, and the radius of its arc transition is 2 mm.

10. The engine cylinder bore inner ring groove cutter according to claim 9, characterized in that: The blade body (11) is made of alloy structural steel, and has a hardness of HRC28-35 after quenching and tempering. Wherein, the blade body (11) is subjected to quenching treatment, and the hardness after the treatment is HRC50-55.

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