阅读说明：本技术 一种镗排刀座 (Boring cutter holder ) 是由 韩春晓 陈夏雯 徐毅峰 于 2019-11-08 设计创作，主要内容包括：本发明公开了一种镗排刀座,包括刀架、精镗装置、粗镗装置、传动机构、第一调整单元和第二调整单元,精镗装置连接传动机构,传动机构连接刀架,所述粗镗装置通过另一个传动机构连接刀架,精镗装置上安装第一调整单元,粗镗装置上安装第二调整单元。本发明所公开的镗排刀座,结构紧凑巧妙,安装便利牢靠。调节精度大为优化,有利于推广应用。(The invention discloses a boring cutter holder, which comprises a cutter frame, a fine boring device, a rough boring device, a transmission mechanism, a first adjusting unit and a second adjusting unit, wherein the fine boring device is connected with the transmission mechanism, the transmission mechanism is connected with the cutter frame, the rough boring device is connected with the cutter frame through another transmission mechanism, the first adjusting unit is installed on the fine boring device, and the second adjusting unit is installed on the rough boring device. The boring cutter holder disclosed by the invention is compact and ingenious in structure and convenient and firm to install. The adjusting precision is greatly optimized, and the popularization and the application are facilitated.)

1. A boring tool apron is characterized in that: the boring machine tool apron comprises a tool rest (101), a fine boring device, a rough boring device, a transmission mechanism, a first adjusting unit and a second adjusting unit, wherein the fine boring device is connected with the transmission mechanism, the transmission mechanism is connected with the tool rest (101), the rough boring device is connected with the tool rest (101) through another transmission mechanism, the first adjusting unit is installed on the fine boring device, and the second adjusting unit is installed on the rough boring device.

2. The boring bar holder as set forth in claim 1, wherein: the transmission mechanism comprises an adjusting gear (106) and an adjusting rack (108), the adjusting gear (106) is meshed with the adjusting rack (108), the adjusting rack (108) is detachably and fixedly mounted on the tool rest (101), one end of the adjusting gear (106) in one transmission mechanism is detachably and fixedly mounted on the fine boring device, the other end of the adjusting gear (106) in the other transmission mechanism is movably arranged on the tool rest (101), one end of the adjusting gear (106) in the other transmission mechanism is detachably and fixedly mounted on the rough boring device, and the other end of the adjusting gear (106) in the other transmission mechanism is movably arranged on the tool rest (101.

3. The boring bar holder as set forth in claim 2, wherein: the fine boring device comprises a fine boring base (105) and a fine boring cutter holder (111), the fine boring base (105) is mounted on a cutter frame (101) in a pressing mode through a base pressing block (113), and the fine boring cutter holder (111) is mounted on the fine boring base (105) through a first adjusting unit.

4. The boring bar holder of claim 3, wherein: the first adjustment unit includes a fine boring adjuster (110).

5. The boring holder as claimed in claim 2, 3 or 4, wherein: the rough boring device comprises a rough machining base (126) and a cutter bar baffle (125), wherein the rough machining base (126) is tightly pressed and installed on a cutter frame (101) through a base pressing block (113), and the cutter bar baffle (125) is installed on the rough machining base (126).

6. The boring bar holder of claim 5, wherein: the second adjusting unit comprises an adjusting cam (122), one end of the adjusting cam (122) is installed on the cutter bar baffle (125), and the other end of the adjusting cam is installed on the rough machining base (126).

7. The boring bar holder as set forth in claim 1, wherein: the two knife rests (101) are fastened and installed through fasteners, positioning keys (115) are arranged at the positions where the two knife rests are in contact with each other, and positioning grooves for installing the positioning keys (115) are formed in the corresponding positions of the knife rests.

8. The boring bar holder of claim 7, wherein: the inner side of each tool rest (101) is provided with a semicircular arc surface for accommodating a boring spindle, the semicircular arc surface of one tool rest (101) is provided with a transmission key (102), and the semicircular arc surface of the other tool rest is provided with a support strip (119).

9. The boring bar holder of claim 8, wherein: and a plurality of pressing strips (117) are also arranged on the semi-circular arc surface of each tool rest (101).

10. The boring bar holder as set forth in claim 1, wherein: the lower surfaces of the fine boring device and the rough boring device are provided with accommodating grooves (1051) for mounting and guiding each transmission mechanism.

Technical Field

The invention belongs to the field of machining, and particularly relates to a boring bar cutter holder.

Background

The tool rest and tool apron adjusting mechanism of the existing boring machine adopts a thread adjusting mode, and the adjusting mechanism designed by the tool rest and tool apron adjusting mechanism is complex in structure and high in maintenance cost. In addition, when cast iron parts are machined, dust can enter the adjusting mechanism, and the adjusting precision and the service life of the tool apron are affected. Meanwhile, the adjustment precision of the tool apron is not high. The existing boring bar tool apron has a larger improvement space from the structural aspect and the layout design aspect.

Disclosure of Invention

In order to overcome the defects of the prior art, the invention aims to provide a boring bar cutter holder, which optimizes the structure of the boring bar cutter holder for boring bar processing, improves an adjusting mechanism, improves the processing precision of the boring bar and reduces the maintenance cost.

The purpose of the invention is realized by adopting the following technical scheme:

a boring bar holder, comprising: the fine boring device is connected with the transmission mechanism, the transmission mechanism is connected with the tool rest, the coarse boring device is connected with the tool rest through another transmission mechanism, the first adjusting unit is installed on the fine boring device, and the second adjusting unit is installed on the coarse boring device.

By adopting the technical scheme, the rough adjustment can be realized by the fine boring device and the rough boring device under the transmission mechanism, and the design precision is 0.5 mm. In addition, the fine boring device can realize fine adjustment under the action of the first adjusting unit, and the adjusting precision is 0.002 mm. The coarse adjusting device can realize semi-fine adjustment under the action of the second adjusting unit, and the design precision is 0.25 mm. The structure layout is reasonable and ingenious, various adjustments such as fine adjustment, coarse adjustment and semi-fine adjustment can be realized, and the machining precision of the boring bar is improved.

Preferably, the transmission mechanism comprises an adjusting gear and an adjusting rack, the adjusting gear is meshed with the adjusting rack, the adjusting rack is detachably and fixedly mounted on the tool rest, one end of the adjusting gear in one transmission mechanism is detachably and fixedly mounted on the fine boring device, the other end of the adjusting gear in the other transmission mechanism is movably arranged on the tool rest, one end of the adjusting gear in the other transmission mechanism is detachably and fixedly mounted on the coarse boring device, and the other end of the adjusting gear in the other transmission mechanism is movably arranged on the tool rest. By adopting the technical scheme, the effective transmission of the fine boring device and the coarse adjusting device can be realized by adopting a gear and rack mode, and the coarse adjusting can be realized by matching with the scale marks on the tool rest and each device.

Preferably, the fine boring device comprises a fine boring base and a fine boring cutter holder, the fine boring base is tightly pressed and installed on the cutter holder through a base pressing block, and the fine boring cutter holder is installed on the fine boring base through a first adjusting unit. Through adopting above-mentioned technical scheme, the finish boring base compresses tightly the briquetting through the base and installs on the knife rest, and the installation of the finish boring base of being convenient for is fixed on the one hand, and fixed firm. On the other hand, the fine boring base is also convenient to adjust.

Preferably, the first adjusting unit includes a fine boring adjuster. By adopting the technical scheme, the fine boring adjuster is a standard fine boring adjusting unit, so that the fine boring adjuster is convenient to mount and adjust, and the fine boring is efficiently and conveniently realized.

Preferably, the rough boring device comprises a rough machining base and a cutter bar baffle, the rough machining base is tightly pressed and installed on the cutter frame through a base pressing block, and the cutter bar baffle is installed on the rough machining base. Through adopting above-mentioned technical scheme, through the cooperation with the fastener use, the base compresses tightly the briquetting and can compress tightly the rough machining base on the knife rest, is favorable to the firm fixed of rough machining base on the one hand, and on the other hand also is convenient for loosen and carries out the coarse adjustment in a flexible way to rough machining base after the base compresses tightly the briquetting.

Preferably, the second adjusting unit comprises an adjusting cam, one end of the adjusting cam is mounted on the cutter bar baffle, and the other end of the adjusting cam is mounted on the rough machining base. Through adopting above-mentioned technical scheme, adjust the scale mark on the cam cooperation cutter arbor baffle, can carry out half fine tuning, the structure is ingenious to the cutter arbor.

Preferably, the number of the knife rests is two, the two knife rests are fastened and installed through fasteners, positioning keys are arranged at the positions where the two knife rests are in contact with each other, and positioning grooves for installing the positioning keys are formed in the corresponding positions of the knife rests. Through adopting above-mentioned technical scheme, fix through fastener (like screw, nut) between two knife rests, the installation is convenient, and the setting of navigation key makes two knife rests fixed accurate on the one hand, and on the other hand makes installation back knife rest more firm.

Preferably, the inner side of each tool rest is provided with a semicircular arc surface for accommodating the boring spindle, the semicircular arc surface of one tool rest is provided with a transmission key, and the semicircular arc surface of the other tool rest is provided with a support strip. By adopting the technical scheme, the arrangement of the transmission key is beneficial to fixing the main shaft, thereby being beneficial to subsequent boring processing. A single key or a double key can be optionally configured, and the contact rigidity of the tool rest and the boring spindle is improved by mounting the support bar during single key.

Preferably, a plurality of pressing strips are further arranged on the semi-circular arc surface of each tool rest. By adopting the technical scheme, the arrangement of the pressing strip is rigidly connected with the boring bar of the boring bar, so that the main shaft of the boring bar is further fixed more firmly, and the maintenance cost is reduced.

Preferably, the lower surfaces of the fine boring device and the rough boring device are provided with accommodating grooves for mounting and guiding each transmission mechanism. Through adopting above-mentioned technical scheme, the setting of holding tank is favorable to drive mechanism's installation and direction, makes drive mechanism not expose in the outside, but is in inside, has avoided the interference of outside filths such as dust ingeniously, is favorable to the maintenance of precision and the extension of life-span.

Compared with the prior art, the invention has the beneficial effects that:

(1) the fine boring device or/and the coarse boring device are/is provided with a transmission mechanism (the gear is meshed with the rack on the tool rest), coarse adjustment is realized by matching the scale marks on the tool rest, the fine boring device and the base in the coarse boring device, and the design precision is 0.5 mm.

(2) After a rough boring base in the rough boring device is provided with a cutter bar, an adjusting cam is arranged on the rear side of the cutter bar, semi-fine adjustment is realized through matching of the cam and the scale marks of a cutter bar baffle plate in the rough boring device, and the design precision is 0.25 mm.

(3) A first adjusting unit (a standard fine boring adjusting unit) is arranged on a fine boring base in a fine boring device to realize fine adjustment, and the adjusting precision is 0.002 mm.

(4) The parts of the adjusting mechanism are simple or standard cutters are adopted, so that the maintenance time and cost are reduced.

(5) The components are convenient to install and replace, and if a replaceable tool apron design is adopted in a rough boring device or/and a fine boring device, the tool apron and the blade can be configured according to the requirements of machining an inner hole of a part.

(6) The tool rest can be selected according to the requirements of processing parts to realize the processing of asynchronous boring, and the processing efficiency is improved.

Drawings

FIG. 1 is a schematic structural view of a boring bar holder according to an embodiment of the present invention;

FIG. 2 is an enlarged view of portion I of FIG. 1;

FIG. 3 is an exploded view of a boring tool apron according to an embodiment of the invention;

FIG. 4 is an exploded view of another embodiment of the boring bar holder according to the present invention;

FIG. 5 is an exploded view of another angle of the boring bar seat according to an embodiment of the present invention;

FIG. 6 is an exploded view of another angle of the boring bar seat according to an embodiment of the present invention;

fig. 7 is an enlarged view of section II in fig. 6.

In the figure: 101. a tool holder; 102. a drive key; 103. a drive key set screw; 104. a guide cylindrical pin; 105. finely boring the base; 106. an adjusting gear; 107. adjusting the rack positioning cylindrical pin; 108. adjusting the rack; 109. adjusting the rack fixing screw; 110. finely boring the regulator; 111. finely boring the cutter holder; 112. fastening screws; 113. the base compresses the pressing block; 114. a pressing block fastening screw; 115. a positioning key; 116. the compression strip fixes the screw; 117. compressing the strips; 118. a support strip fixing screw; 119. a supporting strip; 120. a fastening washer; 121. fastening a nut; 122. an adjustment cam; 123. a cutter bar baffle plate fixing screw; 124. a cutter bar fastening screw; 125. a cutter bar baffle; 126. roughly machining the base; 1011. roughly adjusting scale lines; 1012. a gear guide groove; 1251. semi-fine adjusting the scale marks; 1051. accommodating grooves; 1052. a guide groove.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.

In the description of the present application, it is to be understood that the terms "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the indicated orientations and positional relationships based on the orientation shown in the drawings for convenience in describing the application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated, and are not to be considered limiting of the application.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral connections; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact of the first and second features, or may comprise contact of the first and second features not directly but through another feature in between. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

In the present embodiment, referring to fig. 1 to 7, a boring bar holder includes: the fine boring device is connected with the transmission mechanism, the transmission mechanism is connected with the tool rest 101, the coarse boring device is connected with the tool rest 101 through another transmission mechanism, the first adjusting unit is installed on the fine boring device, and the second adjusting unit is installed on the coarse boring device.

The transmission mechanism comprises an adjusting gear 106 and an adjusting rack 108, the adjusting gear 106 is meshed with the adjusting rack 108, the adjusting rack 108 is detachably and fixedly arranged on the tool rest 101, one end of the adjusting gear 106 in one transmission mechanism is detachably and fixedly arranged on the fine boring device, the other end of the adjusting gear 106 in the other transmission mechanism is movably arranged on the tool rest 101, one end of the adjusting gear 106 in the other transmission mechanism is detachably and fixedly arranged on the coarse boring device, and the other end of the adjusting gear 106 in the other transmission mechanism is movably arranged on.

The fine boring device comprises a fine boring base 105 and a fine boring cutter holder 111, wherein the fine boring base 105 is tightly mounted on the cutter frame 101 through a base pressing block 113, and the fine boring cutter holder 111 is mounted on the fine boring base 105 through a first adjusting unit. The first adjustment unit includes a fine boring adjuster 110.

The rough boring device comprises a rough machining base 126 and a cutter bar baffle 125, wherein the rough machining base 126 is tightly installed on the cutter frame 101 through a base pressing block 113, and the cutter bar baffle 125 is installed on the rough machining base 126.

The second adjustment unit includes an adjustment cam 122, one end of the adjustment cam 122 is mounted on the knife bar block 125, and the other end is mounted on the roughing base 126.

The number of the tool rests 101 is two, the two tool rests 101 are fastened and installed through fasteners, positioning keys 115 are arranged at the positions where the two tool rests are in contact with each other, and positioning grooves for installing the positioning keys 115 are formed in the corresponding positions of the tool rests.

The inner side of each tool rest 101 is provided with a semi-circular arc surface for accommodating a boring spindle, the semi-circular arc surface of one tool rest 101 is provided with a transmission key 102, and the semi-circular arc surface of the other tool rest is provided with a support bar 119. The semicircular arc surface of each tool holder 101 is also provided with a plurality of pressing strips 117. So as to reliably fix the boring bar main shaft. The mounting support bar 119 can improve the contact rigidity of the tool rest and the boring spindle.

The lower surfaces of the fine boring device and the rough boring device are provided with accommodating grooves 1051 for installing and guiding each transmission mechanism.

In another aspect, referring to fig. 1 to 4, in the present embodiment, the boring bar holder includes: a tool holder 101; a drive key 102; drive key set screws 103; a guide cylindrical pin 104; finely boring the base 105; an adjustment gear 106; adjusting the rack positioning cylindrical pin 107; an adjustment rack 108; adjusting rack set screws 109; fine boring the adjuster 110; a fine boring tool apron 111; a fastening screw 112; a base pressing block 113; a press block fastening screw 114; a positioning key 115; compression bar set screws 116; a compression bar 117; support bar set screws 118; support bars 119; a fastening washer 120; a fastening nut 121; the adjustment cam 122; a cutter bar baffle fixing screw 123; a knife bar fastening screw 124; a knife bar stop 125 and a roughing base 126.

The two tool holders 101 are approximately semicircular, two ends of each tool holder 101 are fixed installation parts, the fixed installation parts protrude outwards and are provided with through holes for the penetration of fastening screws 112, and the two tool holders 101 are fixed together by fastening nuts 121 and fastening washers 120. The contact part of the two knife rests 101 is provided with a positioning groove, and a positioning key 115 is arranged in the positioning groove so as to ensure that the two knife rests are firmly connected without dislocation.

The drive key 102 is fixed to the circular arc-shaped inner side surface of one of the tool holders 101 by a drive key fixing screw 103 to match with a key groove on the boring spindle to be fixedly connected with the boring spindle.

The guide cylindrical pin 104 is fixedly mounted on the tool post 101 and is used for guiding and adjusting the fine boring base 105 and the rough machining base 126. The fine boring base 105 or the rough machining base 126 is provided with an F-shaped guide groove 1052 on the lower surface thereof for guiding the guide cylindrical pin 104.

The upper surface of the fine boring base 105 has an upwardly protruding circular cylindrical body for mounting the fine boring adjuster 110. The fine boring adjuster 110 has an adjusting fine of 0.002 mm. One side of the fine boring base 105 is an inclined surface for matching with the wedge-shaped base pressing block 113, and the base pressing block 113 is abutted against the fine boring base 105 by using a pressing block fastening screw 114, so that the fine boring base 105 is firmly pressed on the tool rest 101. The fine boring base 105 is also vertically provided with a through hole for mounting and exposing a rotating shaft at the upper end of the adjusting gear 106, so that the adjusting gear 106 can be conveniently adjusted from the upper surface of the fine boring base 105, the adjusting gear 106 is adjusted under the condition that the base pressing block 113 is loosened, the adjusting rack 108 is driven, the fine boring base 105 is driven to move, and the coarse adjustment of the fine boring base can be realized by matching with the corresponding tool rest and the coarse adjustment scale line 1011 on the coarse boring base. The lower surfaces of the fine boring base 105 and the rough machining base 126 are both provided with accommodating grooves 1051 for accommodating the adjusting gears 106 and the adjusting racks 108, so that the gears and the racks are hidden in the fine boring base 105 and the rough machining base 126, on one hand, each transmission mechanism can be protected, and on the other hand, dust intrusion can be avoided. The tool holder 101 is provided with an L-shaped gear guide slot 1012 at the mounting position of the corresponding adjusting gear 106, which facilitates the mounting and movement guiding of the adjusting gear 106.

The two ends of the adjusting gear 106 are rotating shafts, the upper rotating shaft is provided with an inner hexagonal groove which is flush with or exposed out of the surface of the fine boring base 105 or the rough machining base 126 so as to be convenient for adjusting an inner hexagonal tool, and the middle part of the adjusting gear is a gear which is meshed with the adjusting rack 108.

The adjusting rack positioning cylindrical pin 107 is arranged in a through hole of the adjusting rack 108, the bottom end of the adjusting rack positioning cylindrical pin is also arranged on the tool rest 101 in a penetrating mode, so that the adjusting rack 108 can be positioned conveniently, a rack is arranged on one side of the adjusting rack 108, and vertical through holes are also formed in the two ends of the adjusting rack for fixing the adjusting rack by penetrating through the adjusting rack fixing screw 109.

The pressing strip 117 is used for assisting in pressing and fixing the boring bar main shaft, and the rigid connection strength is improved. The pressing strip 117 is provided with a through hole and fixed on the inner side surface of the tool rest through a pressing strip fixing screw 116, and the number of the pressing strips can be set according to actual requirements. Support bar 119 is secured to the inside surface of the tool holder by support bar set screws 118.

The two ends of the adjusting cam 122 are provided with rotating shafts, the upper rotating shaft is provided with an inner concave hexagonal groove, so that the adjusting of the tool is facilitated, and the cutter bar baffle 125 is provided with a through hole for the installation and exposure of the upper rotating shaft of the adjusting cam. The knife bar baffle 125 can be provided with semi-fine scale marks 1251 with a precision of 0.25 mm. A knife bar retainer set screw 123 secures knife bar retainer 125 to a U-shaped support of roughing mount 126.

The upper portion of the roughing pedestal 126 has a U-shaped seat in which the knife bar is mounted and secured to the roughing pedestal 126 by a transversely disposed knife bar securing screw 124. One side of the roughing base 126 is an inclined surface for the wedge-shaped base to compress the press block to match and compress. The other side upper surface of the roughing base 126 or the upper surface of the tool rest is provided with a rough adjustment scale line 1011 with a precision of 0.5mm for rough adjustment of the roughing base 126.

The gear rack structure for the boring bar cutter holder for boring bar processing in the embodiment realizes coarse adjustment of the cutter holder. The fastening of the tool rest and the tool apron is realized by adopting a wedge-shaped locking mode. And the semi-fine adjustment of the cutter bar is realized by adopting a cam structure. Fastening of the cutter bar and the cutter seat is realized through a cutter bar fastening screw, and meanwhile, the cutter bar baffle plate limits possible displacement of the cutter bar. And carrying out fine boring by adopting a standard fine boring adjusting unit. Different types of machining blades can be mounted on the standard fine boring adjusting unit through replacement of the fine boring cutter holder to meet the machining requirements of different inner holes. The pressing strip 117 is rigidly connected with the boring bar of the boring machine, so that the maintenance cost is reduced. The kinetic energy of the boring bar main shaft is transmitted through the transmission key 102, a single key or a double key can be selected to be configured, and the contact rigidity of the tool rest and the boring bar is improved through the mounting support bar 119 during single key.

In conclusion, the boring bar cutter holder for boring bar processing adopts three mechanisms of coarse adjustment, semi-fine adjustment and fine adjustment to realize the precision adjustment of 0.5mm, 0.25mm and 0.002 mm. The machining precision is effectively improved. The gear on the fine boring base or the rough boring base is meshed with the rack on the tool rest, coarse adjustment is realized by matching the tool apron with the base scale marks, and the design precision is 0.5 mm. An adjusting cam is arranged on the rear side of a cutter bar arranged on the rough boring base, semi-fine adjustment is realized through matching of the cam and the scale marks of a cutter bar baffle, and the design precision is 0.25 mm. And a standard fine boring adjusting unit is arranged on the fine boring base to realize fine adjustment, and the adjusting precision is 0.002 mm.

Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.