Gear group mechanism, line boring tool and line boring tool assembly

Abstract

The present invention provides a gear group mechanism, a line boring tool and a line boring tool assembly. The gear group mechanism includes a gear member group and a guide sleeve assembly. The gear group mechanism also includes a plurality of gear positions distributed along a preset axial interval. The plurality of gear positions are divided into two gear position units. The two gear position units are respectively located on both sides of a preset center line. One or more gear positions of a gear position unit correspond to one or more gear positions of another gear position unit and are symmetrically arranged relative to the preset center line. The gear group includes a plurality of gear members distributed along a preset axial interval. Each gear member corresponds to a gear position and is arranged at the gear position. The guide sleeve assembly includes a plurality of guide sleeves distributed along a preset axial interval. The plurality of guide sleeves include an intermediate guide sleeve arranged at the preset center line. A guide sleeve is arranged on at least one side of each gear member along the preset axial direction. By adopting the gear group mechanism of the present application, only one line boring tool or two identical line boring tools are needed to complete boring at both ends.

Description

Technical Field

[0001] The invention relates to the technical field of line boring tool boring, and in particular to a gear group mechanism, a line boring tool and a line boring tool assembly. Background Art

[0002] Camshaft holes and crankshaft holes are important hole systems on the engine cylinder block.

[0003] The camshaft hole is a set of key holes in the engine cylinder block used to support the camshaft. Its processing accuracy is high, and its processing quality directly determines the performance, working reliability, stability and service life of the diesel engine. The camshaft hole is generally processed by a linear boring tool.

[0004] The crankshaft hole is an important hole system on the engine cylinder block. Its processing quality directly affects the assembly accuracy and overall performance of the engine. The crankshaft hole is generally processed by a linear boring tool.

[0005] The machining accuracy of the camshaft hole and the crankshaft hole determines the performance of the engine; and with the in-depth promotion and application of flexible machining, when using a machining center for machining, due to the requirements of the tool gripping mechanism on the tool length, line boring tools generally use the method of machining at both ends.

[0006] However, the engine cylinder block is usually an even number, and the number of openings is an odd number. The guide sleeve of the line boring tool is usually arranged between the openings, and the openings are usually arranged in an asymmetrical position, and the width and distance of each opening are different; therefore, processing from both ends requires the design and manufacture of two different line boring tools to complete the process, which makes manufacturing inconvenient. Among them, the opening width refers to the width of each opening, and the opening distance refers to the distance between each opening. Summary of the invention

[0007] The main purpose of the present invention is to provide a gear group mechanism, a wire boring tool and a wire boring tool assembly to solve the problem in the prior art that two different wire boring tools are required for boring from both ends, which makes the wire boring tool inconvenient to manufacture.

[0008] In order to achieve the above-mentioned purpose, according to one aspect of the present invention, a gear group mechanism is provided, which includes a gear group and a guide sleeve assembly; the guide sleeve assembly includes a guide sleeve, the guide sleeve has a guide hole for a boring bar of a wire boring tool to pass through, the hole wall of the guide hole is connected to the boring bar, and the boring bar is axially movable relative to the guide sleeve; a tool groove is provided on the hole wall of the guide hole to allow a machining tool on the boring bar to pass through along a preset axial direction; the gear group includes a gear, the gear has a preset machining hole for the boring bar to pass through, so that the machining tool on the boring bar can perform boring processing on the preset machining hole; the gear group mechanism also includes: a plurality of gears spaced apart along the preset axial direction, and the plurality of gears are divided into two gear units Unit, each gear unit includes one or more gears; the two gear units are respectively located on both sides of a preset center line, and one or more gears of one gear unit are symmetrically arranged with respect to the preset center line in a one-to-one correspondence with one or more gears of the other gear unit; the extension direction of the preset center line is perpendicular to the preset axial direction; wherein the gear component group includes a plurality of gears distributed at intervals along the preset axial direction, each gear component corresponds to a gear and is arranged at the gear position; the guide sleeve assembly includes a plurality of guide sleeves distributed at intervals along the preset axial direction; the plurality of guide sleeves include an intermediate guide sleeve arranged at the preset center line; a guide sleeve is arranged on at least one side of each gear along the preset axial direction.

[0009] Furthermore, multiple support positions are distributed at preset axial intervals, and the multiple support positions are divided into two support position units, each support position unit includes one or more support positions; the two support position units are respectively located on both sides of a preset center line, and one or more support positions of one support position unit are symmetrically arranged with respect to the preset center line in a one-to-one correspondence with one or more support positions of the other support position unit; each guide sleeve in the guide sleeve assembly except the middle guide sleeve corresponds to a support position and is arranged at the support position.

[0010] Furthermore, the middle guide sleeve includes two guide parts which are distributed along a preset axial direction and connected to each other, and the two guide parts of the middle guide sleeve are symmetrically arranged relative to a preset center line.

[0011] Furthermore, the axial width of each gear of a gear unit along the preset axial direction is equal to the axial width of the corresponding gear of another gear unit along the preset axial direction; the axial width of each gear element along the preset axial direction is equal to the axial width of the gear where it is located.

[0012] Furthermore, the axial width of each support position of a support position unit along the preset axial direction is equal to the axial width of the corresponding support position of another support position unit along the preset axial direction; the axial width of each guide sleeve along the preset axial direction is equal to the axial width of the support position where it is located.

[0013] Furthermore, among the multiple support positions of each support position unit, the support position located at the end away from another support position unit is the end support position, and the guide sleeve on the end support position is the end guide sleeve; a stopper is provided on both sides of each guide sleeve in the guide sleeve assembly except the end guide sleeve.

[0014] Furthermore, the gear position among the multiple gear positions of each gear unit that is located at the end away from another gear unit is an end gear position, and the support position among the multiple support positions of each support position unit that is located at the end away from another support position unit is an end support position; a guide sleeve is provided on the end support position of each support position unit; among the gear units and support position units located on the same side of the preset center line, the end support position is located on the outside of the end gear position away from the preset center line.

[0015] Furthermore, the guide sleeve on the end support position is an end guide sleeve, and the axial width of the end guide sleeve along the preset axial direction is greater than the axial width of the remaining guide sleeves in the guide sleeve assembly except the end guide sleeve along the preset axial direction.

[0016] According to another aspect of the present invention, a line boring tool is provided, which includes a boring bar, on which one or more machining tool groups are distributed along the axial direction thereof, and the machining tool groups include one or more machining knives distributed along the axial direction of the boring bar; the line boring tool is suitable for the above-mentioned gear group mechanism; the one or more machining tool groups on the boring bar are used to be arranged in one-to-one correspondence with one or more gears of each gear unit of the gear group mechanism, so that each machining tool group on the boring bar is used to perform boring processing on the preset machining holes of the gear pieces on the corresponding gear positions of each gear unit of the gear group mechanism.

[0017] Furthermore, the line boring tool has a machining starting position; when the line boring tool is located at the machining starting position, the free end of the boring rod is located at the middle guide sleeve.

[0018] According to another aspect of the present invention, a line boring tool assembly is provided, which includes two of the above-mentioned line boring tools, and the two line boring tools enter the gear group mechanism from both ends of the gear group mechanism along a preset axial direction to perform boring processing.

[0019] The technical solution of the present invention is applied, and the gear group mechanism includes a gear group and a guide sleeve assembly; the guide sleeve assembly includes a guide sleeve, and the guide sleeve has a guide hole for a boring bar of a wire boring tool to pass through, the hole wall of the guide hole is connected to the boring bar, and the boring bar is movably arranged relative to the guide sleeve along the axial direction of the boring bar; a tool groove is arranged on the hole wall of the guide hole to allow a machining tool on the boring bar to pass through along a preset axial direction; the gear group includes a gear, and the gear has a preset machining hole for the boring bar to pass through, so that the machining tool on the boring bar can perform boring processing on the preset machining hole; the gear group mechanism also includes a plurality of gears spaced apart along the preset axial direction, and the plurality of gears are divided into two gear units, and each gear unit has a plurality of gears spaced apart along the preset axial direction, and the plurality of gears are divided into two gear units, and each gear unit has a plurality of gears spaced apart along the preset axial direction, and the plurality of gears are spaced apart from each other. The unit includes one or more gears; the two gear units are respectively located on both sides of the preset center line, and one or more gears of one gear unit correspond to one or more gears of the other gear unit and are symmetrically arranged relative to the preset center line; the extension direction of the preset center line is perpendicular to the preset axial direction; wherein the gear component group includes a plurality of gears distributed along the preset axial direction, each gear corresponds to a gear and is arranged at the gear position; the guide sleeve assembly includes a plurality of guide sleeves distributed along the preset axial direction; the plurality of guide sleeves include an intermediate guide sleeve arranged at the preset center line; at least one side of each gear along the preset axial direction is provided with a guide sleeve. By adopting the gear group mechanism of the present application, only one line boring tool or two identical line boring tools are needed to complete the boring of both ends. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The drawings constituting a part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0021] Figure 1 It shows a schematic structural diagram of the gear group mechanism according to the present invention;

[0022] Figure 2 A schematic structural diagram of a wire boring tool according to the present invention is shown;

[0023] Figure 3 A structural schematic diagram of an existing gear group mechanism is shown.

[0024] The above drawings include the following reference numerals:

[0025] 10. guide sleeve; 101. guide hole; 102. knife groove; 103. middle guide sleeve; 104. guide part;

[0026] 11. first guide sleeve; 12. second guide sleeve; 13. third guide sleeve; 14. fourth guide sleeve; 15. fifth guide sleeve;

[0027] 20. File; 201. Preset processing hole;

[0028] 21. First gear; 22. Second gear; 23. Third gear; 24. Fourth gear; 25. Fifth gear; 26. Sixth gear; 27. Seventh gear; 28. Virtual gear;

[0029] 80. Preset center line;

[0030] 90. Line boring tool; 91. Boring bar; 92. Processing tool; 93. Positioning key; 94. Tool handle;

[0031] 210, first gear; 220, second gear; 230, third gear; 240, fourth gear; 250, fifth gear; 260, sixth gear; 270, seventh gear;

[0032] 310, first guide sleeve; 320, second guide sleeve; 330, third guide sleeve; 340, fourth guide sleeve; 350, fifth guide sleeve. DETAILED DESCRIPTION

[0033] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0034] It should be noted that the following detailed descriptions are illustrative and are intended to provide further explanation of the present application. Unless otherwise specified, all technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the art to which the present application belongs.

[0035] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0036] The present invention provides a gear group mechanism, please refer to Figure 1 and Figure 2 The gear group mechanism includes a gear component group and a guide sleeve assembly.

[0037] The guide sleeve assembly includes a guide sleeve 10, which has a guide hole 101 for a boring bar 91 of a wire boring tool 90 to pass through, the hole wall of the guide hole 101 is connected to the boring bar 91, and the boring bar 91 is movably arranged along the axial direction of the boring bar 91 relative to the guide sleeve 10, that is, the boring bar 91 is movably arranged axially relative to the hole wall of the guide hole 101; a tool groove 102 is recessed on the hole wall of the guide hole 101 to allow the processing tool 92 on the boring bar 91 to pass through along a preset axial direction.

[0038] The guide sleeve 10 includes an inner ring and an outer ring, which are arranged to rotate relative to each other; the hole wall of the guide hole 101 is the inner wall of the inner ring. When the boring bar 91 is inserted into the guide hole 101, the hole wall of the guide hole 101 is connected to the boring bar 91, so that the boring bar 91 drives the inner ring to rotate relative to the outer ring, and the boring bar 91 is arranged to be axially movable relative to the inner ring; the outer ring is used to be fixedly connected to the external fixing structure to fix the outer ring. In this way, when the boring bar 91 is boring and rotating, the guide sleeve 10 can support the boring bar 91.

[0039] Along the axial direction of the guide hole 101, both ends of the tool groove 102 extend to the two end surfaces of the guide sleeve 10, so that the tool groove 102 is a through strip groove along the axial direction of the guide hole 101; when the boring bar 91 moves along the preset axial direction, the machining knife 92 on the boring bar 91 passes through the tool groove 102. The axial direction of the guide sleeve 10 and the axial direction of the guide hole 101 are both the same as the preset axial direction.

[0040] The stopper group includes a stopper 20, which has a preset machining hole 201 for the boring bar 91 to penetrate, the center line of the preset machining hole 201 coincides with the center axis of the boring bar 91 penetrated therein, and the axial direction of the preset machining hole 201 is the same as the preset axial direction; the preset machining hole 201 is bored by the machining tool 92 on the boring bar 91 to process the preset machining hole 201 into an assembly hole that can be matched with the protruding part of the part to be assembled, so as to provide for the installation of the protruding part of the part to be assembled, that is, the protruding part of the part to be assembled is arranged in the assembly hole, so that the stopper 20 can support the part to be assembled.

[0041] Optionally, the part to be assembled is a camshaft, a crankshaft, or a balancing shaft; the protruding portion is a cam portion of the camshaft, an eccentric portion of the crankshaft, or a counterweight portion of the balancing shaft.

[0042] Optionally, the stopper 20 is a stopper of a cylinder block.

[0043] It should be noted that boring is an internal diameter cutting process that uses a tool to enlarge a hole or other circular contour. Its application range generally ranges from rough machining to finishing.

[0044] Specifically, the boring bar 91 is a cylindrical bar.

[0045] Specifically, two machining tool units are arranged on the boring bar 91, each machining tool unit includes one or more machining tool groups distributed along the axial direction of the boring bar 91, and each machining tool group includes one or more machining tools 92 distributed along the axial direction of the boring bar 91; the two machining tool units are arranged in a one-to-one correspondence with the two gear units, and the one or more machining tool groups of each machining tool unit are used to be arranged in a one-to-one correspondence with the one or more gears of the corresponding gear unit, so that each machining tool group of each machining tool unit is used to perform boring processing on the preset machining hole 201 of the gear piece 20 on the corresponding gear position of the corresponding gear unit.

[0046] In the specific implementation process, the extension length of the machining knife 92 in the radial direction of the boring bar 91 is adjustable so that the machining knife 92 can machine assembly holes of different diameters. When multiple machining knife groups are arranged on the boring bar 91, the preset machining holes 201 of multiple stoppers 20 can be machined at the same time.

[0047] Optionally, the processing knife set includes two processing knives 92 .

[0048] Specifically, the boring bar 91 has a driving end and a free end that are arranged opposite to each other; the free end of the boring bar 91 enters from an end of one gear unit away from another gear unit; the driving end of the boring bar 91 is used to connect with a driving mechanism so that the driving mechanism drives the boring bar 91 to rotate and move axially. Optionally, the driving mechanism includes a machine tool spindle.

[0049] Specifically, the boring bar 91 includes a plurality of bar segments, and the diameters of the plurality of bar segments decrease sequentially from the driving end to the free end of the boring bar 91; that is, the boring bar 91 is a stepped structure.

[0050] The gear group mechanism also includes a plurality of gears distributed at intervals along a preset axial direction, and the plurality of gears are divided into two gear units, each gear unit including one or more gears; the two gear units are respectively located on both sides of a preset center line 80, and one or more gears of one gear unit are arranged in a one-to-one correspondence with one or more gears of the other gear unit, so that each gear of one gear unit and the corresponding gear of the other gear unit are symmetrically arranged relative to the preset center line 80; the extension direction of the preset center line 80 is perpendicular to the preset axial direction.

[0051] The stopper assembly includes a plurality of stoppers 20 distributed at predetermined intervals along the axial direction. Each stopper 20 corresponds to a gear position and is arranged at the corresponding gear position.

[0052] The guide sleeve assembly includes a plurality of guide sleeves 10 spaced apart along a preset axial direction; the plurality of guide sleeves 10 include an intermediate guide sleeve 103 disposed at a preset center line 80; and a guide sleeve 10 is disposed on at least one side of each stopper 20 along the preset axial direction.

[0053] In a specific implementation process, when the line boring cutter 90 performs boring processing, the line boring cutter 90 is supported in sections by a plurality of guide sleeves 10 to avoid the vibration of the cutter, thereby ensuring the smooth completion of the boring processing.

[0054] In the present application, the gear group mechanism also includes a plurality of support positions distributed along a preset axial interval, and the plurality of support positions are divided into two support position units, each support position unit including one or more support positions; the two support position units are respectively located on both sides of a preset center line 80, and one or more support positions of one support position unit are arranged one-to-one with one or more support positions of the other support position unit, so that each support position of one support position unit and the corresponding support position of the other support position unit are symmetrically arranged relative to the preset center line 80; in the remaining guide sleeves 10 in the guide sleeve assembly except the middle guide sleeve 103, each guide sleeve 10 corresponds to a support position and is arranged at its corresponding support position.

[0055] In the present application, the middle guide sleeve 103 includes two guide portions 104 distributed along a preset axial direction and connected to each other. The two guide portions 104 of the middle guide sleeve 103 are symmetrically arranged relative to a preset center line 80 .

[0056] In the present application, the axial width of each gear of a gear unit along the preset axis is equal to the axial width of the corresponding gear of another gear unit along the preset axis; the axial width of each gear member 20 along the preset axis is equal to the axial width of the gear in which it is located.

[0057] In the present application, the axial width of each support position of a support position unit along the preset axial direction is equal to the axial width of the corresponding support position of another support position unit along the preset axial direction; the axial width of each guide sleeve 10 along the preset axial direction is equal to the axial width of the support position where it is located.

[0058] In the present application, the gear position located at the end away from another gear position unit among the multiple gear positions of each gear unit is called the end gear position, and the support position located at the end away from another support position unit among the multiple support positions of each support position unit is called the end support position.

[0059] Specifically, the guide sleeve 10 on the end support position is an end guide sleeve.

[0060] Optionally, in the remaining guide sleeves 10 in the guide sleeve assembly except the end guide sleeve, each guide sleeve 10 is provided with a stopper 20 on both sides along the preset axial direction.

[0061] Optionally, a guide sleeve 10 is provided on the end support position of each support position unit, that is, the guide sleeve assembly includes two end guide sleeves.

[0062] Optionally, in the gear position unit and the support position unit located on the same side of the preset center line 80 , the end support position is located on the outside of the end gear position away from the preset center line 80 .

[0063] Optionally, the axial width of the end guide sleeve along the preset axial direction is greater than the axial width of the remaining guide sleeves 10 in the guide sleeve assembly except the end guide sleeve along the preset axial direction.

[0064] The present invention also provides a line boring tool 90, which is suitable for the above-mentioned gear group mechanism. The line boring tool 90 includes a boring bar 91, on which a plurality of machining tool groups distributed along its axial direction are arranged, and the machining tool groups include one or more machining tools 92 distributed along the axial direction of the boring bar 91; the plurality of machining tool groups on the boring bar 91 are used to be arranged one-to-one corresponding to the plurality of gear positions of the gear group mechanism, that is, the plurality of machining tool groups on the boring bar 91 are used to be arranged one-to-one corresponding to all gear positions of the gear group mechanism, so that each machining tool group on the boring bar 91 is used to perform boring processing on the preset machining hole 201 of the gear member 20 on the corresponding gear position of the gear group mechanism.

[0065] Specifically, a tool holder is provided on the boring bar 91; each processing tool group corresponds to a tool holder, and each tool holder includes all processing tools 92 of the corresponding processing tool group; or each processing tool corresponds to a tool holder, and each tool holder includes the corresponding processing tool 92. The tool slot 102 is used for the tool holder to pass through.

[0066] Specifically, a protrusion is provided on one of the outer peripheral wall of the boring bar 91 and the hole wall of the guide sleeve 10, and a strip groove extending along the axial direction of the boring bar 91 is provided on the other; the protrusion is provided in the strip groove, and the protrusion is slidably provided in the strip groove along the axial direction of the boring bar 91, so that the boring bar 91 can be movably provided relative to the guide sleeve 10 along its axial direction; in the circumferential direction of the boring bar 91, the protrusion and the strip groove cooperate to make the boring bar 91 and the inner ring of the guide sleeve 10 relatively fixed, so that the boring bar 91 drives the inner ring of the guide sleeve 10 to rotate.

[0067] Optionally, along the circumference of the boring bar 91 , two side walls of the protrusion are in contact with two side walls of the strip groove respectively, so that the boring bar 91 and the inner ring of the guide sleeve 10 are relatively fixed in the circumference of the boring bar 91 .

[0068] Optionally, the protrusion is a positioning key 93. For example, the positioning key 93 is arranged on the boring bar 91.

[0069] It should be noted that the outer wall surface of the boring bar 91 is in close contact with the hole wall surface of the guide sleeve 10, so that there is a certain friction force between the outer wall surface of the boring bar 91 and the hole wall surface of the guide sleeve 10. This friction force can enable the boring bar 91 to drive the inner ring of the guide sleeve 10 to rotate, and does not affect the axial movement of the boring bar 91 relative to the inner ring of the guide sleeve 10 under the action of external axial drive, that is, the external axial driving force is greater than the friction force.

[0070] Optionally, a tool handle 94 is provided at the driving end of the boring bar 91 , so that the driving end of the boring bar 91 is connected to the driving mechanism through the tool handle 94 .

[0071] Specifically, the line boring tool 90 has a machining start position and a machining end position; the line boring tool 90 rotates and is axially fed to complete the boring process.

[0072] Optionally, when the line boring tool 90 is located at the machining starting position, the free end of the boring bar 91 is located at the middle guide sleeve 103 .

[0073] The present invention further provides a line boring tool assembly, which includes two of the above-mentioned line boring tools 90. The two line boring tools 90 enter the gear group mechanism from both ends of the gear group mechanism along a preset axial direction to perform boring processing.

[0074] Specifically, the two wire boring tools 90 of the wire boring tool assembly are two identical wire boring tools 90 .

[0075] like Figure 3 As shown, it is the existing file group mechanism setting method; Figure 3 The two figures in the figure are respectively from top to bottom: the line boring tool enters from the left end, and the line boring tool enters from the right end; there are seven stops, that is, the number of stops is an odd number; and the axial width M1 of the first stop 210 along the preset axial direction is different from the axial width M2 of the other six stops along the preset axial direction; and the spacing along the preset axial direction between the first stop 210 and the second stop 220 is L1, the spacing along the preset axial direction between the second stop 220 and the third stop 230, the spacing along the preset axial direction between the third stop 230 and the fourth stop 240, the spacing along the preset axial direction between the fourth stop 240 and the fifth stop 250, and the spacing along the preset axial direction between the fifth stop 250 and the sixth stop 260 are all L2, and the spacing along the preset axial direction between the sixth stop 260 and the seventh stop 270 is L3, and L1, L2, and L3 are not equal. The guide sleeves are arranged at both ends and at the middle interval. The first guide sleeve 310, the second guide sleeve 320, the third guide sleeve 330, the fourth guide sleeve 340, and the fifth guide sleeve 350 cannot be evenly distributed. The position of the processing tool group is determined according to the position and width of each step to complete the processing of each step within the processing stroke of the line boring tool. However, since the number of steps is an odd number (the cylinder holes of the engine body are an even number), the line boring tool layout, length, and step position required for processing at both ends are different. What is needed are two completely different line boring tools, so they need to be designed and manufactured separately to meet the processing requirements.

[0076] like Figure 1As shown, it is a specific embodiment of the present application, the third guide sleeve 13 is an intermediate guide sleeve 103; the fourth stopper 24 and the fifth stopper 25 are located on both sides of the third guide sleeve 13 and are symmetrically arranged relative to the preset center line 80; the third stopper 23 and the sixth stopper 26 are symmetrically arranged relative to the preset center line 80, the second stopper 22 and the seventh stopper 27 are symmetrically arranged relative to the preset center line 80, the second guide sleeve 12 and the fourth guide sleeve 14 are symmetrically arranged relative to the preset center line 80, and the second stopper 22 and the third stopper 23 are symmetrically arranged relative to the preset center line 80. The first guide sleeve 11 and the fifth guide sleeve 15 are symmetrically arranged relative to the preset center line 80; the first guide sleeve 11 is located outside the first guide sleeve 21, and the fifth guide sleeve 15 is located outside the virtual gear 28. Since the number of the gears 20 is seven, that is, an odd number, the virtual gear 28 is arranged to facilitate the symmetrical arrangement of the gears.

[0077] exist Figure 1 In the figure, the axial width of the first gear piece 21 along the preset axis is equal to the axial width of the virtual gear 28 along the preset axis, and both are M1; the axial width of the second gear piece 22 along the preset axis is equal to the axial width of the seventh gear piece 27 along the preset axis, and both are M2; the axial width of the third gear piece 23 along the preset axis is equal to the axial width of the sixth gear piece 26 along the preset axis, and both are M2; the axial width of the fourth gear piece 24 along the preset axis is equal to the axial width of the fifth gear piece 25 along the preset axis, and both are M2.

[0078] exist Figure 1 In the figure, the spacing between the first gear 21 and the second gear 22 along the preset axial direction is equal to the spacing between the seventh gear 27 and the virtual gear 28 along the preset axial direction, and both are L5; the spacing between the second gear 22 and the third gear 23 along the preset axial direction is equal to the spacing between the sixth gear 26 and the seventh gear 27 along the preset axial direction; the spacing between the third gear 23 and the fourth gear 24 along the preset axial direction is equal to the spacing between the fifth gear 25 and the sixth gear 26 along the preset axial direction, and both are L2.

[0079] exist Figure 1 In the figure, the axial width of the first guide sleeve 11 along the preset axis is equal to the axial width of the fifth guide sleeve 15 along the preset axis, and both are M3; the axial width of the second guide sleeve 12 along the preset axis is equal to the axial width of the fourth guide sleeve 14 along the preset axis, and both are M8; M3 is greater than M8.

[0080] Figure 1The four figures in the figure are from top to bottom: the line boring tool 90 enters from the left end and is located at the starting position of processing, the line boring tool 90 enters from the left end and is located at the end position of processing, the line boring tool 90 enters from the right end and is located at the starting position of processing, and the line boring tool 90 enters from the right end and is located at the end position of processing.

[0081] based on Figure 1 The setting mode of the gear group mechanism in the preset center line 80 is that the width and position of the guide sleeve and the width and position of the gear piece on both sides are completely symmetrical, so only one line boring tool 90 or two identical line boring tools 90 are needed to complete the boring at both ends.

[0082] How to use the line boring tool: The machining center spindle grabs the line boring tool and inserts it from one end of the gear group mechanism (machine body boring die). The line boring tool moves axially to the starting position of processing, and the line boring tool is supported by each guide sleeve; the machine tool spindle drives the line boring tool to start rotating and axially feed processing, and axially feeds to the last processing tool of the processing tool group to complete the processing. The processing spindle drives the line boring tool to return to the starting position of processing in a straight line, and then the tool is withdrawn to complete a processing cycle.

[0083] From the above description, it can be seen that the above embodiments of the present invention achieve the following technical effects:

[0084] In the gear group mechanism provided by the present invention, it includes a gear group and a guide sleeve assembly; the guide sleeve assembly includes a guide sleeve 10, the guide sleeve 10 has a guide hole 101 for a boring bar 91 of a wire boring tool 90 to pass through, the hole wall of the guide hole 101 is connected to the boring bar 91, and the boring bar 91 is movably arranged relative to the guide sleeve 10 along the axial direction of the boring bar 91; a tool groove 102 is arranged on the hole wall of the guide hole 101, so that the processing tool 92 on the boring bar 91 passes through along the preset axial direction; the gear group includes a gear 20, the gear 20 has a preset processing hole 201 for the boring bar 91 to pass through, so that the processing tool 92 on the boring bar 91 performs boring processing on the preset processing hole 201; the gear group mechanism also includes a plurality of gears distributed at intervals along the preset axial direction, and the plurality of gears are divided into There are two gear units, each of which includes one or more gears; the two gear units are respectively located on both sides of a preset center line 80, and one or more gears of one gear unit correspond to one or more gears of another gear unit and are symmetrically arranged relative to the preset center line 80; the extension direction of the preset center line 80 is perpendicular to the preset axial direction; wherein the gear component group includes a plurality of gear components 20 distributed at intervals along the preset axial direction, each gear component 20 corresponds to a gear and is arranged at the gear position; the guide sleeve assembly includes a plurality of guide sleeves 10 distributed at intervals along the preset axial direction; the plurality of guide sleeves 10 include an intermediate guide sleeve 103 arranged at the preset center line 80; at least one side of each gear component 20 along the preset axial direction is provided with a guide sleeve 10. With the gear group mechanism of the present application, only one line boring tool or two identical line boring tools are needed to complete the boring of both ends.

[0085] Regardless of whether it is an engine cylinder block with an even number of cylinder holes and an odd number of gears, or an engine cylinder block with an odd number of cylinder holes and an even number of gears, the gear group mechanism of the present application can make the guide sleeve width and position, the gear member width and spacing on both sides of the preset center line 80 completely symmetrical, so that the same line boring tool 90 or two identical line boring tools 90 can be compatible for processing from both ends.

[0086] The wire boring tool 90 of the present application is compatible with the processing of both ends of a hole system such as a cylinder block crankshaft hole, saving the design and manufacture of a wire boring tool, improving efficiency, reducing costs, and shortening the process preparation cycle.

[0087] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein, for example. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0088] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0089] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A stop group mechanism, comprising a stopper group and a guide sleeve assembly; the guide sleeve assembly comprises a guide sleeve (10), the guide sleeve (10) having a guide hole (101) for a boring bar (91) of a wire boring tool (90) to penetrate, the hole wall of the guide hole (101) being connected to the boring bar (91), the boring bar (91) being arranged to be axially movable relative to the guide sleeve (10); a tool groove (102) is arranged on the hole wall of the guide hole (101) to allow a machining tool (92) on the boring bar (91) to pass through along a preset axial direction; the stopper group comprises a stopper (20), the stopper (20) having a preset machining hole (201) for the boring bar (91) to penetrate, so that the machining tool (92) on the boring bar (91) can perform boring processing on the preset machining hole (201); characterized in that: The file group mechanism also includes: A plurality of gear positions are spaced apart along the preset axial direction, the plurality of gear positions are divided into two gear position units, each of the gear position units comprises one or more gear positions; the two gear position units are respectively located on both sides of a preset center line (80), the one or more gear positions of one gear position unit and the one or more gear positions of the other gear position unit are symmetrically arranged with respect to the preset center line (80) in a one-to-one correspondence; the extension direction of the preset center line (80) is perpendicular to the preset axial direction; Wherein, the gear member group comprises a plurality of the gear members (20) spaced apart and distributed along the preset axial direction, and each of the gear members (20) corresponds to one of the gear positions and is arranged at the gear position; The guide sleeve assembly comprises a plurality of guide sleeves (10) spaced apart along the preset axial direction; the plurality of guide sleeves (10) comprises an intermediate guide sleeve (103) arranged at the preset center line (80); at least one side of each stopper (20) along the preset axial direction is provided with the guide sleeve (10); The intermediate guide sleeve (103) comprises two guide portions (104) distributed along the preset axial direction and connected to each other, and the two guide portions (104) of the intermediate guide sleeve (103) are symmetrically arranged relative to the preset center line (80); The axial width of each gear position of one gear position unit along the preset axial direction is equal to the axial width of the corresponding gear position of another gear position unit along the preset axial direction; the axial width of each gear member (20) along the preset axial direction is equal to the axial width of the gear position where it is located.

2. The gear group mechanism according to claim 1, characterized in that: The file group mechanism also includes: A plurality of support positions are distributed along the preset axial intervals, the plurality of support positions are divided into two support position units, each of the support position units includes one or more support positions; the two support position units are respectively located on both sides of a preset center line (80), and one or more support positions of one support position unit correspond to one or more support positions of another support position unit and are symmetrically arranged relative to the preset center line (80); each of the guide sleeves (10) in the guide sleeve assembly, except the middle guide sleeve (103), corresponds to one support position and is arranged at the support position.

3. The gear group mechanism according to claim 2, characterized in that: The axial width of each support position of one of the support position units along the preset axial direction is equal to the axial width of the corresponding support position of another of the support position units along the preset axial direction; the axial width of each of the guide sleeves (10) along the preset axial direction is equal to the axial width of the support position where it is located.

4. The gear group mechanism according to claim 2, characterized in that: Among the multiple support positions of each support position unit, the support position located at the end away from another support position unit is an end support position, and the guide sleeve (10) on the end support position is an end guide sleeve; each guide sleeve (10) in the guide sleeve assembly, except the end guide sleeve, is provided with a stopper (20) on both sides.

5. The gear group mechanism according to claim 2, characterized in that: Among the multiple gear positions of each gear position unit, the gear position located at the end away from another gear position unit is an end gear position, and among the multiple support positions of each support position unit, the support position located at the end away from another support position unit is an end support position; the guide sleeve (10) is provided on the end support position of each support position unit; In the gear position unit and the support position unit located on the same side of the preset center line (80), the end support position is located on the outside of the end gear position away from the preset center line (80); and / or, The guide sleeve (10) on the end support position is an end guide sleeve, and the axial width of the end guide sleeve along the preset axial direction is greater than the axial width of the remaining guide sleeves (10) in the guide sleeve assembly except the end guide sleeve along the preset axial direction.

6. A line boring tool, comprising a boring bar (91), wherein the boring bar (91) is provided with a plurality of machining tool groups distributed along the axial direction thereof, wherein the machining tool group comprises one or more machining tools (92) distributed along the axial direction of the boring bar (91); characterized in that: The wire boring tool is suitable for the gear group mechanism described in any one of claims 1 to 5; the multiple machining tool groups on the boring bar (91) are used to be arranged in one-to-one correspondence with the multiple gear positions of the gear group mechanism, so that each machining tool group on the boring bar (91) is used to perform boring processing on the preset machining hole (201) of the gear member (20) on the corresponding gear position of the gear group mechanism.

7. The line boring tool according to claim 6, characterized in that: The line boring tool has a machining starting position; when the line boring tool is located at the machining starting position, the free end of the boring rod (91) is located at the middle guide sleeve (103).

8. A line boring tool assembly, characterized in that: It comprises two wire boring tools as claimed in claim 6 or 7, wherein the two wire boring tools respectively enter the gear group mechanism from both ends of the gear group mechanism along a preset axial direction to perform boring processing.

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