CN112658301A - Accurately-adjustable boring clamp holder and inner and outer circle boring process - Google Patents
Accurately-adjustable boring clamp holder and inner and outer circle boring process Download PDFInfo
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- CN112658301A CN112658301A CN202011612911.1A CN202011612911A CN112658301A CN 112658301 A CN112658301 A CN 112658301A CN 202011612911 A CN202011612911 A CN 202011612911A CN 112658301 A CN112658301 A CN 112658301A
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- 229920000742 Cotton Polymers 0.000 claims description 3
- 229910000831 Steel Inorganic materials 0.000 claims description 3
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- 238000004519 manufacturing process Methods 0.000 abstract description 10
- 238000012827 research and development Methods 0.000 abstract description 3
- 239000000446 fuel Substances 0.000 description 14
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Abstract
The invention relates to the technical field of boring tool holders, in particular to a boring tool holder capable of being accurately adjusted and an inner and outer circle boring process. The invention can be suitable for the research and development and production of various and small-batch similar products, the boring tool holder is accurate and adjustable, the purchase cost of the auxiliary tool is greatly reduced, and the product cost is reduced.
Description
Technical Field
The invention relates to the technical field of boring cutter holders, in particular to a boring holder capable of being accurately adjusted and an inner and outer circle boring process.
Background
The fuel injector assembly is a key component of a fuel injection system of a diesel engine, and the mechanical fuel injector generally comprises a fuel injector body, a fuel injection nozzle matching part, an intermediate body part, a tappet rod, a pressure regulating spring, a fuel injector nut and the like, and has the main functions of: 1) the fuel injector is used for ensuring that the sprayed fuel is fine and uniform fog particles and accurately and uniformly distributing the fog particles into a combustion chamber to form excellent mixed gas. 2) The timing function, the start and the end of the injection, must have accurate time, therefore, the opening and the closing of the injector needle should be very accurate and rapid, and the phenomenon of dripping of the fuel is not allowed to occur. 3) And (4) controlling the pressure, wherein the oil injector starts to inject oil under certain pressure control. When the injection is finished, the pressure drop should be kept within a certain range, not allowed to be excessive. If the pressure drop is too great, the injector supplies fuel at a pressure below a specified low pressure, which can cause the formation of a mixture to deteriorate and combustion to be poor, affecting the performance of the diesel engine. 4) The fuel injector can also perform metering and control functions, besides the fuel supply and control functions of the fuel injector. The performance index and reliability of the oil injector have important influence on the economy, emission index, smoke intensity and reliability of the diesel engine. The supporting sprayer of marine diesel is mechanical type sprayer, and the sprayer body is one of the important part of sprayer assembly, and the appearance shape structure is complicated, and the technical index requires highly, and the sprayer high pressure fuel inlet is threaded connection, and screw hole axial perpendicular to sprayer body axial, and the screw thread precision is 6G, and the inner chamber has designed the ring channel that has the end face seal function, and the technical requirement is: the surface roughness Ra0.8 and the verticality 0.02 mm; the sleeve mounting structure design is prevented leaking to high accuracy, and technical requirement is: the roundness of the working surface of the cylinder is 0.01mm, the verticality of the end surface is 0.02mm, and the surface roughness is Ra0.8.
The structure design of the oil sprayer body matched with the diesel engine is complex, the requirement on technical indexes is high, common equipment is adopted to process a high-pressure oil connecting part and a high-precision leakage-proof sleeve mounting part in different working procedures, and the oil sprayer has inconsistent reference, long process flow, large quantity of clamps and accessories, low production efficiency and product technical index guarantee capability and poor product quality stability and consistency due to multiple clamping; if a machining center is adopted for machining, a large number of tool handles, special boring tool bars and cutters need to be arranged, the purchase cost of the auxiliary tool is very high, and the production cost is greatly increased.
Disclosure of Invention
The invention overcomes the defects in the prior art and provides the boring clamp capable of being accurately adjusted and the inner and outer circle boring process.
In order to solve the technical problems, the invention is realized by the following technical scheme:
a boring holder capable of being accurately adjusted comprises a holder, wherein the holder is provided with a guide groove, a slider type adjustable boring tool apron capable of sliding left and right in the guide groove is arranged at the guide groove, the holder is connected with the slider type adjustable boring tool apron through a locking bolt in a locking manner, a slotted sliding groove is respectively arranged on the front side and the rear side of the slider type adjustable boring tool apron, the locking bolt penetrates through the sliding groove to be in threaded connection with the holder, the lower part of the slider type adjustable boring tool apron is connected with a boring tool in a locking manner, the right side of the slider type adjustable boring tool apron is connected with an adjusting screw in a threaded manner, the adjusting screw is connected with a fixing seat through an accurate inner hole in a matching manner, the fixing seat is fixedly connected with the lower part of the right side of the holder, the fixing seat is provided with a limiting groove, a stop block is arranged in the limiting groove in a clearance fit, the stop block is provided with a first inner hole, the adjusting screw rod is provided with a second inner hole, and a conical pin passes through the first inner hole and the second inner hole.
An adjust knob passes through two conical pin and fixes at the adjusting screw right-hand members, the fixing base right side is arranged in to adjust knob, the last accurate main scale calibrated scale that is equipped with of adjust knob, be equipped with accurate vice chi calibrated scale on the fixing base, adjusting screw pitch is 0.5mm, and the corresponding regulation precision of feeding is 0.001 mm.
Preferably, the adjusting screw is made of nitrided steel, the adjusting screw is tempered HB 220-270, and the nitriding rate is more than 65 HRC.
Preferably, the precise main scale dial and the precise auxiliary scale dial are made of 40Cr materials.
Preferably, the sliding contact part of the tool holder and the sliding block type adjustable boring tool holder is subjected to surface strengthening treatment, and the hardness is greater than 60 HRC.
Preferably, a counterweight is arranged at the lower part of the fixed seat.
An inner and outer circle boring process comprises the following steps:
(a) wiping the end face of a tool shank of a standard machining center and the end face of a sliding block type adjustable boring tool apron by cotton cloth, and installing a holder on the tool shank;
(b) selecting two boring cutters according to product requirements, wiping the boring cutters clean, respectively installing the boring cutters on slide block type adjustable boring cutter seats of two accurately adjustable boring clampers, and preliminarily setting initial positions of the boring cutters according to process requirements;
(c) mounting the tool shanks of the two clampers on a tool magazine of a machining center machine tool;
(d) trial boring a cylindrical working surface and a threaded inner hole of an oil injector body matched with a diesel engine according to a designed machining center program, calling a boring cutter from a cutter magazine by a machining center spindle head when trial boring the inner hole, wherein the cutter point of the initial position of the boring cutter faces the left side, calling the boring cutter from the cutter magazine by the machining center spindle head when trial boring the cylindrical working surface, wherein the cutter point of the initial position of the boring cutter head faces the right side, measuring the diameter of the cylindrical working surface and the inner diameter of the threaded inner hole by using a measuring instrument, comparing the measured result value with the product process design size, determining an adjustment value, and adjusting the position of the boring cutter by using a forward or reverse adjusting knob;
(e) and (d) adjusting the process value to meet the technical index of the process requirement, formally boring the cylindrical working surface and the threaded inner hole for batch production, calling a boring cutter from a tool magazine by the main shaft head of the machining center during formal boring machining, boring the cylindrical working surface when the tool point at the initial position of the boring cutter faces to the right side, directly calling another boring cutter after the boring of the cylindrical working surface is finished, and boring the threaded inner hole when the tool point at the initial position of the boring cutter faces to the left side.
Compared with the prior art, the invention has the beneficial effects that: aiming at the typical problems existing in the manufacturing process of an oil sprayer body matched with a diesel engine, a set of cutter holder capable of being accurately adjusted and performing boring and cutting conversion on an inner circle and an outer circle is invented on the basis of a vertical machining center machining process, and the machining of a high-pressure oil connecting part and a high-precision leakage-proof sleeve mounting part of the oil sprayer body structure of the diesel engine is completed by one-time clamping, so that the problems of inconsistent reference, long process flow, large clamp and accessory quantity, low production efficiency and product technical index guarantee capacity, and poor product quality stability and consistency caused by the steps of a common lathe and multiple times of clamping are solved; the defects that a machining center is adopted to process and equip a large number of tool handles, special boring tool bars and tools, the purchase cost of tool auxiliary tools is high, and the production cost is greatly increased are overcome, the production efficiency and the guarantee capability of the technical indexes of products are improved, the manufacturing cost of the products is greatly reduced, the stability and the consistency of the product quality are improved, and the rapid transformation and the adaptability of the research and development and the production of multi-variety and small-batch oil sprayer bodies are improved.
The slider type guiding movement and the main and auxiliary ruler screw rod precision bidirectional adjusting mechanism are adopted to realize precision feed amount adjustment in the precision boring process of the inner circle and the outer circle, and the feed adjustment control precision is 0.001 mm; the boring tool holder is matched with a standard machining center tool holder and a universal boring tool bar for use, can replace a special boring tool system, is suitable for research and development and production of various and small-batch similar products, is accurate and adjustable, greatly reduces purchasing cost of the tool auxiliary tool, and reduces product cost.
Drawings
The invention is described in further detail below with reference to the following figures and embodiments:
FIG. 1 is a front view of the initial position of boring an inner hole by the holder boring tool of the present invention;
FIG. 2 is a schematic diagram of the initial position structure of the outer circle boring of the holder boring tool of the invention;
FIG. 3 is a schematic structural view of a slider type adjustable boring tool apron and a tool shank of the present invention;
FIG. 4 is a schematic view of a connection structure of the fixing base and the adjusting screw rod of the present invention;
FIG. 5 is a schematic structural diagram of the precise main scale and the precise auxiliary scale of the invention;
FIG. 6 is a schematic sectional view of the connection between the tool holder and the slide block type adjustable boring tool holder of the present invention;
FIG. 7 is a schematic view of the connection of the tool holder and the slide block type adjustable boring tool holder of the present invention in a bottom view.
Detailed Description
The invention is described in further detail below with reference to the following detailed description and accompanying drawings:
a boring holder capable of being adjusted accurately comprises a holder 1, wherein the holder 1 is provided with a guide groove 101, a slider type adjustable boring tool apron 2 capable of sliding left and right in the guide groove 101 is arranged at the position of the guide groove 101, the holder 1 is connected with the slider type adjustable boring tool apron 2 in a locking manner through a locking bolt 3, long hole-shaped sliding grooves 201 are respectively arranged on the front side and the rear side of the slider type adjustable boring tool apron 2, the locking bolt 3 penetrates through the sliding grooves 201 to be connected with the holder 1 in a threaded manner, the lower part of the slider type adjustable boring tool apron 2 is connected with a boring tool 4 in a locking manner, the right side of the slider type adjustable boring tool apron 2 is connected with an adjusting screw rod 5 in a threaded manner, the adjusting screw rod 5 is connected with a fixed seat 6 in a matching manner through an accurate inner hole, the fixed seat 6 is fixedly connected to the lower part of the holder 1, the fixed seat 6 is provided with a limit, a first conical pin 8 fixedly connects the adjusting screw rod 5 and the stop block 7 together, the first stop block 7 is provided with a first inner hole 701, the adjusting screw rod 5 is provided with a second inner hole 501, and the first conical pin 8 penetrates through the first inner hole 701 and the second inner hole 501.
An adjusting knob 9 is fixed at 5 right-hand members of adjusting screw through two 10 taper pins, 6 right sides of fixing base are arranged in to adjusting knob 9, be equipped with accurate main scale calibrated scale 901 on the adjusting knob 9, be equipped with accurate vice chi calibrated scale 602 on the fixing base 6, 5 screw pitches of adjusting screw are 0.5mm, and the corresponding regulation precision of feeding is 0.001 mm.
Furthermore, the adjusting screw 5 is made of nitrided steel, the HB 220-270 is quenched and tempered, and the nitriding rate is more than 65 HRC.
Further, the precise main scale dial 901 and the precise auxiliary scale dial 602 are made of 40Cr materials.
Further, the sliding contact part of the tool holder 1 and the sliding block type adjustable boring tool apron 2 is subjected to surface strengthening treatment, the hardness is larger than 60HRC, and the wear resistance of the sliding block is enhanced.
Further, a counterweight 11 is arranged at the lower part of the fixed seat 6.
The main and auxiliary scale bidirectional precise adjusting mechanism is realized by an adjusting screw rod 5, a precise main scale dial 901, a precise auxiliary scale dial 602 and an adjusting knob 9. The fixed seat 6 is matched with the adjusting screw rod 5 through a precise inner hole, the stop block 7 and the conical pin I8 are fixed together, and the adjusting knob 9 is fixed on the adjusting screw rod 2 through the conical pin II 10. The fixing seat 6 is fixed on the tool shank 1, the adjusting knob 9 is rotated in the forward and reverse directions, the adjusting screw rod 5 rotates in the circumferential direction, and the adjustable boring tool apron 2 is driven to move in the two directions due to the fact that the adjusting knob is connected with the fixing seat 6 and does not move in the axial direction.
The adjusting knob 9 and the fixed seat 6 are respectively provided with a precise main scale dial 901 and a precise auxiliary scale dial 602. The structural schematic diagram of the main and auxiliary adjusting discs is shown in fig. 5, the adjusting knob 9 is provided with 50 lattices of main scale graduation lines, and the fixed seat 6 is provided with 10 lattices of auxiliary scale graduation lines. The thread pitch of the adjusting screw 5 is 0.5mm, and the corresponding feeding adjusting precision is 0.001 mm.
An inner and outer circle boring process comprises the following steps:
(a) wiping the end face of a tool shank 1 and the end face of a sliding block type adjustable boring tool apron 2 of a standard machining center by cotton cloth, and installing a holder on the tool shank 1;
(b) selecting two boring cutters 4 according to product requirements, wiping the boring cutters clean, respectively installing the boring cutters 4 on the slide block type adjustable boring cutter seats 2 of the two precisely adjustable boring clampers, and preliminarily setting initial positions of the boring cutters 4 according to process requirements;
(c) mounting the tool holders 1 of the two clampers in the step (b) on a tool magazine of a machining center machine tool;
(d) trial boring a cylindrical working surface and a threaded inner hole of an oil injector body matched with a diesel engine of a certain type according to a designed machining center program, calling a boring cutter 4 from a tool magazine by a machining center spindle head when trial boring the inner hole is performed, wherein the tool nose at the initial position faces the left side as shown in figure 1, calling the boring cutter 4 from the tool magazine by the machining center spindle head when trial boring the cylindrical working surface, the tool nose at the initial position faces the right side as shown in figure 2, measuring the diameter of the cylindrical working surface and the inner diameter of the threaded inner hole by using a measuring instrument, comparing the measurement result value with the product process design size, determining an adjustment value, and adjusting the position of the boring cutter 4 by using a forward or reverse adjusting knob 9;
(e) and (d) adjusting the process value to meet the technical index of the process requirement, formally boring the cylindrical working surface and the threaded inner hole for batch production, calling a boring cutter 4 from a tool magazine by a main shaft head of the machining center during formal boring machining, boring the cylindrical working surface with the cutter point at the initial position facing to the right side, directly calling another boring cutter 4 after the cylindrical working surface is bored, and boring the threaded inner hole with the cutter point at the initial position facing to the left side.
The technical features of the present invention that are not described can be implemented by or using the prior art, and are not described herein again, of course, the above-mentioned embodiments are not limited to the present invention, and the present invention is not limited to the above-mentioned embodiments, and variations, modifications, additions or substitutions that are made by a person of ordinary skill in the art within the spirit and scope of the present invention should also fall within the protection scope of the present invention.
Claims (6)
1. The boring holder capable of being accurately adjusted is characterized by comprising a holder (1), wherein the holder (1) is provided with a guide groove (101), a slider type adjustable boring tool apron (2) capable of sliding left and right in the guide groove (101) is arranged at the guide groove (101), the holder (1) is in locking connection with the slider type adjustable boring tool apron (2) through a locking bolt (3), the front side and the rear side of the slider type adjustable boring tool apron (2) are respectively provided with a long round hole-shaped sliding groove (201), the locking bolt (3) penetrates through the sliding groove (201) to be in threaded connection with the holder (1), the lower part of the slider type adjustable boring tool apron (2) is in locking connection with a boring tool (4), the right side of the slider type adjustable boring tool apron (2) is in threaded connection with an adjusting screw rod (5), the adjusting screw rod (5) is in matched connection with a fixed seat (6) through an accurate inner hole, the fixed seat (6) is fixedly connected with the lower part of the, the fixing seat (6) is provided with a limiting groove (601), a stop block (7) is arranged in the limiting groove (601), the stop block (7) is in clearance fit with the limiting groove (601), a first conical pin (8) is used for fixedly connecting the adjusting screw rod (5) and the stop block (7), a first inner hole (701) is formed in the stop block (7), a second inner hole (501) is formed in the adjusting screw rod (5), and the first conical pin (8) penetrates through the first inner hole (701) and the second inner hole (501); an adjusting knob (9) is fixed at adjusting screw (5) right-hand member through two (10) taper pins, fixing base (6) right side is arranged in adjusting knob (9), be equipped with accurate main scale calibrated scale (901) on adjusting knob (9), be equipped with accurate auxiliary scale calibrated scale (602) on fixing base (6), adjusting screw (5) pitch is 0.5mm, and the corresponding regulation precision of feeding is 0.001 mm.
2. The precisely adjustable boring holder according to claim 1, characterized in that the adjusting screw (5) is made of nitrided steel, hardened and tempered HB 220-270, nitriding >65 HRC.
3. The precisely adjustable boring holder according to claim 1, characterized in that the precision main scale dial (901), the precision sub scale dial (602) are made of 40Cr material.
4. The precisely adjustable boring holder according to claim 1, characterized in that the sliding contact parts of the shank (1) and the slide-block adjustable boring holder (2) are surface-strengthened with a hardness > 60 HRC.
5. The precisely adjustable boring holder according to claim 1, characterized in that the lower part of the holder (6) is provided with a counterweight (11).
6. The inner circle and outer circle boring process is characterized by comprising the following steps of:
(a) wiping the end face of a tool shank (1) of a standard machining center and the end face of a sliding block type adjustable boring tool apron (2) by cotton cloth, and installing a clamp holder on the tool shank (1);
(b) selecting two boring cutters (4) according to product requirements, wiping the boring cutters clean, respectively installing the boring cutters (4) on the slide block type adjustable boring cutter seats (2) of two precisely adjustable boring clampers, and preliminarily setting initial positions of the boring cutters (4) according to process requirements;
(c) mounting the tool shanks (1) of the two clampers in the step (b) on a tool magazine of a machining center machine tool;
(d) trial boring a cylindrical working surface and a threaded inner hole of an oil injector body matched with a diesel engine according to a designed machining center program, calling a boring cutter (4) by a machining center spindle head from a cutter magazine when trial boring the inner hole is carried out, wherein a cutter point at an initial position of the boring cutter (4) faces to the left side, calling the boring cutter (4) by the machining center spindle head from the cutter magazine when trial boring the cylindrical working surface, wherein the cutter point at the initial position of the boring cutter head faces to the right side, measuring the diameter of the cylindrical working surface and the inner diameter of the threaded inner hole by using a measuring instrument, comparing a measurement result value with a product process design size, determining an adjustment value, and adjusting the position of the boring cutter (4) by using a forward or reverse adjusting knob;
(e) and (d) adjusting the process value to meet the technical index of the process requirement, formally boring the cylindrical working surface and the threaded inner hole for batch production, calling a boring cutter (4) by the main shaft head of the machining center from a tool magazine during formal boring machining, boring the cylindrical working surface with the cutter point at the initial position facing to the right side, and directly calling another boring cutter (4) with the cutter point at the initial position facing to the left side for boring the threaded inner hole after the cylindrical working surface is bored.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011612911.1A CN112658301A (en) | 2020-12-31 | 2020-12-31 | Accurately-adjustable boring clamp holder and inner and outer circle boring process |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011612911.1A CN112658301A (en) | 2020-12-31 | 2020-12-31 | Accurately-adjustable boring clamp holder and inner and outer circle boring process |
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| CN112658301A true CN112658301A (en) | 2021-04-16 |
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| CN202011612911.1A Pending CN112658301A (en) | 2020-12-31 | 2020-12-31 | Accurately-adjustable boring clamp holder and inner and outer circle boring process |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114653976A (en) * | 2022-04-25 | 2022-06-24 | 广西玉柴机器股份有限公司 | Fine sleeve boring cutter for processing outer circle of engine cylinder hole |
| CN116329593A (en) * | 2023-04-25 | 2023-06-27 | 北京新风航天装备有限公司 | Precision machining tool and method for long shaft characteristics in narrow space |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0884125A2 (en) * | 1997-06-12 | 1998-12-16 | August Beck GmbH & Co. | Reamer |
| CN105619033A (en) * | 2016-03-04 | 2016-06-01 | 江苏扬子鑫福造船有限公司 | Boring technology for rudder blade |
| CN107008929A (en) * | 2017-05-25 | 2017-08-04 | 宁波丹德瑞精密机械科技有限公司 | A kind of coarse-fine composite integrated boring cutter |
| CN111185723A (en) * | 2019-12-27 | 2020-05-22 | 青岛海立美达电机有限公司 | Machining process capable of improving concentricity of inner circle and outer circle of rotor machining |
| CN111390217A (en) * | 2020-04-15 | 2020-07-10 | 成都飞机工业（集团）有限责任公司 | Batch boring method for precision holes |
-
2020
- 2020-12-31 CN CN202011612911.1A patent/CN112658301A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0884125A2 (en) * | 1997-06-12 | 1998-12-16 | August Beck GmbH & Co. | Reamer |
| CN105619033A (en) * | 2016-03-04 | 2016-06-01 | 江苏扬子鑫福造船有限公司 | Boring technology for rudder blade |
| CN107008929A (en) * | 2017-05-25 | 2017-08-04 | 宁波丹德瑞精密机械科技有限公司 | A kind of coarse-fine composite integrated boring cutter |
| CN111185723A (en) * | 2019-12-27 | 2020-05-22 | 青岛海立美达电机有限公司 | Machining process capable of improving concentricity of inner circle and outer circle of rotor machining |
| CN111390217A (en) * | 2020-04-15 | 2020-07-10 | 成都飞机工业（集团）有限责任公司 | Batch boring method for precision holes |
Non-Patent Citations (1)
| Title |
|---|
| 边乃成 等: "《机械制造技术基础》", vol. 1, pages: 199 - 200 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114653976A (en) * | 2022-04-25 | 2022-06-24 | 广西玉柴机器股份有限公司 | Fine sleeve boring cutter for processing outer circle of engine cylinder hole |
| CN116329593A (en) * | 2023-04-25 | 2023-06-27 | 北京新风航天装备有限公司 | Precision machining tool and method for long shaft characteristics in narrow space |
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