CN205043270U - Numerical control internal tooth honing wheel knife rest - Google Patents

Abstract

A CNC internal gear honing wheel tool holder, including a tool bar, a tool head connected to the tool bar, the tool head includes a fixing part with a fixing hole, a rotating drive part, an inner honing wheel and an inner honing wheel clamping part, the fixing part and the inner honing wheel clamping part The tool bar is fixedly connected, the tool bar is perpendicular to the central axis of the fixing hole of the fixing piece, the inner honing wheel clamping piece is installed in the fixing piece fixing hole, the inner honing wheel clamping piece and the fixing piece can rotate relatively, and the inner honing wheel is installed In the inner honing wheel holder, the rotating driving part penetrates the fixing hole of the fixing part from the inside of the cutter bar, and is connected with the inner honing wheel holder, and the rotating driving part drives the inner honing wheel holder installed with the inner honing wheel Rotate relative to the fixed part, so that the inner honing wheel can finish the tooth surface of the honed gear located in the inner honing wheel.

Description

CNC Internal Gear Honing Wheel Tool Holder

technical field

The utility model relates to the technical field of precision machining of hard-tooth surface gears, in particular to a numerically controlled inner-tooth honing wheel tool holder.

Background technique

High-precision hard-toothed gears are indispensable mechanical transmission components in the fields of automobiles, wind power generation, ships, machine tools, aerospace, and high-speed rail. According to the statistics of the China Gear Professional Association, the scale of China's gear market is expected to reach 220-250 billion yuan by 2015. Thanks to the rapid development of industries such as automobiles, wind power, and high-speed rail, more than 50% of the new gear market demand comes from these industries. During the "Twelfth Five-Year Plan" period, the state will focus on key technological breakthroughs such as long life, fatigue resistance, structural weight reduction, and stress-free centralized manufacturing and assembly of basic components such as gears. The main purpose of the hard tooth surface precision gear finishing process is to achieve the maximum load capacity of the gear and the minimum transmission noise. The high-precision hard-tooth surface gear finishing process is an effective manufacturing technology to achieve the maximum bearing capacity and minimum transmission noise of high-quality gears. The traditional hobbing/shaping-shaving/grinding-heat treatment and other processing techniques have been unable to meet the requirements of gear transmission accuracy, transmission noise and reduced manufacturing costs in high-end electromechanical equipment, and the corresponding hard tooth surface finishing methods --- Powerful gear honing, gear turning, etc., have become the leading direction of gear manufacturing technology research.

Since the application of external gear honing technology in the United States in the late 1950s, gear honing technology has gradually become one of the main methods for finishing hardened gears. The study found that honing can not only effectively reduce gear noise and surface roughness, but also the unique surface structure features formed on the tooth surface after honing can enhance the wear resistance of the tooth surface, making honing a commonly used tool after grinding hardened gears. A finishing process. The traditional honing technology has a small honing allowance, the maximum cutting amount is only 10-15μm; the processing quality mainly depends on the guarantee of the previous processing process (shaving, etc.); the tooth profile and tooth direction correction ability after honing is poor; honing The wheel is made of epoxy resin material, which has defects such as low precision, short service life, and low processing precision of the tooth surface. The application of free honing processing is limited to a certain extent, either for auxiliary processes such as removing residual stress after heat treatment, smoothing, bumping and deburring, or for reducing noise of high-performance gears after grinding and enhancing tooth surfaces Compressive stress, improving the service life of gears and other occasions have greatly restricted the development of gear honing processing technology.

The finishing methods of hard tooth surface after heat treatment mainly include hard tooth surface shaving, hard tooth surface grinding, hard tooth surface fine rolling and hard tooth surface honing. When the processing precision of hard tooth surface gear is controlled at ISO5 level or even higher precision, under the premise of the same manufacturing cost, powerful gear honing processing technology can meet the requirements of high-end equipment on gear precision, load capacity, movement speed, stability, and working life. and noise transmission performance requirements. At present, the new processing technology of gear hobbing-heat treatment-power honing is being vigorously promoted abroad, but it is still difficult to widely promote and popularize it in China.

The powerful honing process of CNC internal gear honing wheel is to use the internal gear-shaped honing wheel and the gear to be honed for meshing transmission, which is equivalent to a pair of cross-axis helical gear transmission, and uses the relative sliding speed and pressure between the tooth surfaces to perform honing. A tooth surface finishing method. CNC Internal Gear Honing Powerful Gear Honing Machine is the key equipment for batch processing precision external gears, duplex gears, shaft gears, and crowned gears. It can process hardened or non-hardened cylindrical straight and helical gears. Gear honing has high production efficiency and low cost. It can reduce gear noise, increase gear bearing capacity, prolong gear life, reduce tooth surface roughness, and can process tooth surface roughness below Ra0.63um, and gear precision can reach 6~7 grades. . Compared with the honing process of external gear honing wheel, it has higher tooth profile and pitch accuracy. The CNC internal gear honing wheel tool holder is one of the most important functional components to realize the above-mentioned machining process. However, the existing CNC internal gear honing wheel tool holder has a single structure and cannot meet the various needs of the market.

Contents of the invention

In view of this, it is necessary to provide a CNC internal gear honing wheel tool holder with simple structure and convenient use.

A CNC internal gear honing wheel tool holder, including a tool bar, a tool head connected to the tool bar, the tool head includes a fixing part with a fixing hole, a rotating drive part, an inner honing wheel and an inner honing wheel clamping part, the fixing part and the inner honing wheel clamping part The tool bar is fixedly connected, the tool bar is perpendicular to the central axis of the fixing hole of the fixing piece, the inner honing wheel clamping piece is installed in the fixing piece fixing hole, the inner honing wheel clamping piece and the fixing piece can rotate relatively, and the inner honing wheel is installed In the inner honing wheel holder, the rotating driving part penetrates the fixing hole of the fixing part from the inside of the cutter bar, and is connected with the inner honing wheel holder, and the rotating driving part drives the inner honing wheel holder installed with the inner honing wheel Rotate relative to the fixed part, so that the inner honing wheel can finish the tooth surface of the honed gear located in the inner honing wheel.

Preferably, the driving end of the rotary driving part is a worm, and the transmission between the rotary driving part and the inner honing wheel clamping part is realized by a cooperative relationship between the worm and the worm gear.

Preferably, the inner honing wheel holder has a taper fixing hole, the hole wall of the taper fixing hole is provided with a positioning protrusion, the outer wall of the inner honing wheel matches the shape of the taper fixing hole of the inner honing wheel holder, and the inner honing wheel There are positioning grooves on the outer wall of the wheel. When the inner honing wheel is installed in the taper fixing hole of the inner honing wheel holder, the positioning convex part on the hole wall of the taper fixing hole is embedded in the positioning groove on the outer wall of the inner honing wheel. .

Preferably, the inner honing wheel clamping part includes a first rolling bearing, a second rolling bearing, a worm gear, and a tapered sleeve with a reduced diameter. The inner wall of the tapered through hole is provided with a positioning groove, the positioning groove is close to the large port of the tapered through hole, and the positioning groove extends to the large port of the tapered through hole, and the tapered sleeve is matched with the tapered through hole. The outer wall of the variable-diameter taper sleeve is provided with a positioning projection, the positioning projection is close to the large port of the variable-diameter taper sleeve, and the positioning projection extends to the large port of the variable-diameter taper sleeve, and the variable-diameter taper sleeve constitutes the taper fixing hole. The inner wall of the variable-diameter taper sleeve is provided with the positioning convex portion. When the inner honing wheel is installed in the variable-diameter taper sleeve, the positioning convex portion on the inner wall of the variable-diameter taper sleeve is embedded in the positioning groove on the outer wall of the inner honing wheel; The outer rings of the first rolling bearing and the second rolling bearing are relatively fixed to the inner wall of the fixing hole of the fixing piece. The inner ring of the worm gear is fixedly connected with both ends of the worm gear.

Preferably, the fixing member includes a fixing frame, two annular seals, an annular front cover, and an annular rear cover, the fixing hole is provided on the fixing frame, and the inner wall of the fixing hole is provided with a The through hole through which the piece passes, the inner wall of the fixing hole is provided with a first positioning ring-shaped protrusion and a second ring-shaped protrusion, and the first positioning ring-shaped protrusion is corresponding to the upper opening close to the fixing hole, The second positioning annular protrusion corresponds to the lower opening of the fixing hole. After the worm gear is arranged in the fixing hole, the first rolling bearing and the second rolling bearing are correspondingly installed from the upper opening and the lower opening of the fixing hole. Finally, the first positioning annular protrusion blocks the outer ring of the first rolling bearing, and the second positioning annular protrusion blocks the outer ring of the second rolling bearing, so that the distance between the first rolling bearing and the second rolling bearing is fixed, and the two rings After the corresponding sealing member is installed from the upper opening and the lower opening of the fixing hole, the ring-shaped front cover and the ring-shaped rear cover cover the upper opening and the lower opening of the fixing hole correspondingly, and are connected with the fixing frame fixedly connected to fix the inner honking wheel clamp in said fixing hole.

Preferably, a third annular positioning protrusion and a fourth annular positioning protrusion are provided on the surface of the annular front cover opposite to the annular rear cover, and the annular rear cover is opposite to the annular front cover. The fifth annular positioning protrusion, the sixth annular positioning protrusion, and the seventh annular positioning protrusion are arranged on the surface of the ring-shaped front cover. The third annular positioning protrusion of the annular front cover is in contact with the outer ring of the first rolling bearing. Then, the fourth annular positioning protrusion of the annular front cover abuts against the end of the worm gear, the fifth annular positioning protrusion of the annular rear cover abuts against the outer ring of the second rolling bearing, and the annular rear The sixth annular positioning protrusion of the cover plate abuts against the other end of the worm wheel and the end of the tapered sleeve, and the seventh annular positioning protrusion of the annular rear cover abuts against the end of the inner honing wheel , so that the first rolling bearing, the second rolling bearing, the worm gear, the reducing taper sleeve and the inner honing wheel are fixed together.

In the above-mentioned CNC internal gear honing wheel tool holder, one end of the tool bar is connected to the honing machine, the other end of the tool bar is connected to the cutter head, the fixing part of the tool head is fixedly connected to the tool bar, and the center of the fixing hole of the tool bar and the fixing part The axis is vertical, the inner honing wheel clamping piece is installed in the fixing hole of the fixing piece, the inner honing wheel clamping piece and the fixing piece can rotate relatively, the inner honing wheel is installed in the inner honing wheel clamping piece, and the rotating drive part is driven from the tool bar The inside penetrates the fixing hole of the fixing part and is connected with the inner honing wheel clamping part. The honing machine provides electric energy for the rotating drive part, and the rotating driving part drives the inner honing wheel clamping part installed with the inner honing wheel to rotate relative to the fixing part. At the same time, the honing machine tool controls the overall rotation and movement of the CNC internal gear honing wheel tool holder, so that the internal honing wheel can finish the tooth surface of the honed gear located in the internal honing wheel.

Description of drawings

Accompanying drawing 1 is a structural schematic diagram of a CNC internal gear honing wheel tool holder in a preferred embodiment.

Accompanying drawing 2 is the exploded structure schematic diagram of the CNC internal gear honing wheel tool holder in Fig. 1 .

Accompanying drawing 3 is the exploded structure schematic diagram of another angle of the numerical control internal gear honing wheel tool holder in Fig. 1 .

Accompanying drawing 4 is the schematic cross-sectional structure diagram of the CNC internal gear honing wheel tool holder in Fig. 1 .

In the figure: CNC internal gear honing wheel tool holder 10, tool bar 20, tool head 30, fixing piece 31, fixing hole 310, passing hole 3100, first positioning annular convex part 3101, second positioning annular convex part 3102 , fixed frame 311, annular seal 312, annular front cover 313, third annular positioning protrusion 3131, fourth annular positioning protrusion 3132, annular rear cover 314, fifth annular positioning protrusion 3141, the sixth annular positioning convex part 3142, the seventh annular positioning convex part 3143, the rotary driving part 32, the inner honing wheel 33, the positioning groove 330, the inner honing wheel clamping part 34, the taper fixing hole 340, the first rolling bearing 342, the second rolling bearing 343, the worm gear part 344, the taper through hole 3440, the annular arc tooth surface 3441, the positioning groove 3442, the variable diameter taper sleeve 345, and the positioning projection 3450.

detailed description

Please refer to Fig. 1 to Fig. 4, the CNC internal gear honing wheel tool holder 10 includes a cutter bar 20, a cutter head 30 connected with the cutter bar 20, and the cutter head 30 includes a fixing member 31 having a fixing hole 310, a rotating drive member 32, an inner The honing wheel 33 and the inner honing wheel clamping part 34, the fixing part 31 is fixedly connected with the cutter bar 20, the cutter bar 20 is perpendicular to the central axis of the fixing hole 310 of the fixing part 31, and the inner honing wheel clamping part 34 is installed on the fixing part 31 In the fixing hole 310 of the inner honing wheel holder 34 and the fixing member 31 can rotate relatively, the inner honing wheel 33 is installed in the inner honing wheel holder 34, and the rotating driving member 32 penetrates the fixing member 31 from the inside of the cutter bar 20 fixed hole 310, and connected with the inner honning wheel holder 34, the rotary drive member 32 drives the inner honning wheel holder 34 installed with the inner honning wheel 33 to rotate relative to the fixing member 31, so that the inner honning wheel 33 is opposite to the The honed gear in the inner honing wheel 33 is finished with tooth surface finishing. Wherein, the driving end of the rotary driving part 32 is a worm, and the transmission between the rotary driving part 32 and the inner honing wheel clamping part 34 is realized by a cooperative relationship between the worm and the worm gear.

The inner honing wheel holder 34 has a taper fixing hole 340, the hole wall of the taper fixing hole 340 is provided with a positioning protrusion, the outer wall of the inner honing wheel 33 matches the shape of the taper fixing hole 340 of the inner honing wheel holder 34 , the outer wall of the inner honing wheel 33 is provided with a positioning groove 330, when the inner honing wheel 33 is installed in the taper fixing hole 340 of the inner honing wheel holder 34, the positioning protrusion on the hole wall of the taper fixing hole 340 is embedded In the positioning groove 330 on the outer wall of the honing wheel 33 .

In this embodiment, the inner honing wheel clamping part 34 includes a first rolling bearing 342, a second rolling bearing 343, a worm gear 344, and a variable-diameter taper sleeve 345. The worm gear 344 is columnar, and the worm gear 344 has a tapered through hole 3440. The outer wall of the part 344 is also provided with an annular arc tooth surface 3441 that cooperates with the worm, and the inner wall of the tapered through hole 3440 is provided with a positioning groove 3442, and the positioning groove 3442 is close to the large port of the tapered through hole 3440, and the positioning groove 3442 extends to The large port of the tapered through hole 3440, the variable diameter tapered sleeve 345 is matched with the tapered through hole 3440, the outer wall of the variable diameter tapered sleeve 345 is provided with a positioning projection 3450, and the positioning projection 3450 is close to the large port of the variable diameter tapered sleeve 345, And the positioning protrusion 3450 extends to the large port of the variable diameter taper sleeve 345, the variable diameter taper sleeve 345 constitutes the taper fixing hole 340, the positioning protrusion is arranged on the inner wall of the variable diameter taper sleeve 345, and the inner honing wheel 33 is installed on the When the variable-diameter taper sleeve 345 is in place, the positioning protrusion on the inner wall of the variable-diameter taper sleeve 345 is embedded in the positioning groove 330 on the outer wall of the inner honing wheel 33; The inner wall of the fixing hole 310 of 31 is relatively fixed, and the inner rings of the first rolling bearing 342 and the second rolling bearing 343 are sleeved on the two ends of the worm gear member 312 correspondingly, and the inner rings of the first rolling bearing 342 and the second rolling bearing 343 are connected with the worm gear member The two ends of 312 are fixedly connected.

Further, the fixing member 31 includes a fixing frame 311, two annular seals 312, an annular front cover plate 313, and an annular rear cover plate 314. The fixing frame 311 is provided with the fixing hole 310, and the fixing hole 310 The inner wall of the fixed hole 310 is provided with a through hole 3100 for the rotation drive member 32 to pass through. The inner wall of the fixed hole 310 is provided with a first positioning ring-shaped convex portion 3101, a second positioning ring-shaped convex portion 3102, the first positioning ring Corresponding to the upper opening of the fixing hole 310 is the ring-shaped protrusion 3101, and the lower opening of the second positioning annular protrusion 3102 is close to the fixing hole 310. After the worm wheel 312 is arranged in the fixing hole 310, the second After the first rolling bearing 342 and the second rolling bearing 343 are installed from the upper opening and the lower opening of the fixing hole 310, the first positioning annular protrusion 3101 blocks the outer ring of the first rolling bearing 342 and the second positioning annular protrusion 3102 Block the outer ring of the second rolling bearing 343 so that the distance between the first rolling bearing 342 and the second rolling bearing 343 is fixed. After the two annular seals 312 are installed correspondingly from the upper opening and the lower opening of the fixing hole 310, The ring-shaped front cover 313 and the ring-shaped rear cover 314 are correspondingly covered on the upper opening and the lower opening of the fixing hole 310, and are fixedly connected with the fixing frame 311, so as to fix the inner honking wheel clamping member 34 on the fixed hole 310. in the fixing hole 310.

Further, a third annular positioning protrusion 3131 and a fourth annular positioning protrusion 3132 are provided on the surface of the annular front cover 313 opposite to the annular rear cover 314, and the ring-shaped rear cover 314 and the ring The fifth annular positioning protrusion 3141, the sixth annular positioning protrusion 3142, and the seventh annular positioning protrusion 3143 are provided on the opposite surface of the annular front cover 313. The third annular positioning of the annular front cover 313 The convex portion 3131 abuts against the outer ring of the first rolling bearing 342, the fourth annular positioning convex portion 3132 of the annular front cover 313 abuts against the end of the worm wheel 344, and the fifth annular positioning convex portion 3132 of the annular rear cover 314 abuts. The positioning protrusion 3141 abuts against the outer ring of the second rolling bearing 343, and the sixth annular positioning protrusion 3142 of the annular rear cover 314 abuts against the other end of the worm wheel 344 and the end of the reducing taper sleeve 345, The seventh annular positioning convex portion 3143 of the annular rear cover 314 abuts against the end of the inner honing wheel 33, so that the first rolling bearing 342, the second rolling bearing 343, the worm wheel 344, the reducing taper sleeve 345 and the inner The honing wheels 33 are fixed together.

Claims (6)

1. A numerical control internal gear honing wheel tool rest, is characterized in that: comprise cutter bar, the cutter head that is connected with cutter bar, cutter head comprises the fixture that has fixing hole, rotary drive member, inner honing wheel and inner honing wheel clip The holder is fixedly connected with the tool bar, the tool bar is perpendicular to the central axis of the fixing hole of the fixing part, the inner honing wheel clamping part is installed in the fixing hole of the fixing part, and the inner honing wheel clamping part and the fixing part can be relatively Rotate, the inner honing wheel is installed in the inner honing wheel holder, the rotating drive part penetrates the fixing hole of the fixing part from the inside of the cutter bar, and is connected with the inner honing wheel holder, and the rotating driving part drives the inner honing wheel installed The clamping part of the inner honing wheel is relatively rotated with the fixed part, so that the inner honing wheel can finish the tooth surface of the honed gear located in the inner honing wheel. 2. The CNC internal gear honing wheel tool holder according to claim 1, characterized in that: the driving end of the rotary drive part is a worm, and the transmission between the rotary drive part and the inner honing wheel clamping part is realized by the cooperation between the worm screw and the worm gear. . 3. The CNC internal gear honing wheel tool holder according to claim 1 or 2, characterized in that: the internal honing wheel clamping part has a taper fixing hole, and a positioning protrusion is arranged on the hole wall of the taper fixing hole, and the inner honing wheel The shape of the outer wall of the inner honing wheel is matched with the shape of the taper fixing hole of the inner honing wheel holder. The outer wall of the inner honing wheel is provided with a positioning groove. When the inner honing wheel is installed in the taper fixing hole of the inner honing wheel holder, the taper fixing hole The positioning protrusion on the wall of the hole is embedded in the positioning groove on the outer wall of the inner honing wheel. 4. The CNC internal gear honing wheel tool holder according to claim 3, characterized in that: the internal honing wheel clamping part comprises a first rolling bearing, a second rolling bearing, a worm wheel, and a variable diameter taper sleeve, the worm wheel is cylindrical, and the worm wheel The part has a tapered through hole, and the outer wall of the worm gear part is also provided with an annular arc tooth surface matched with the worm, and the inner wall of the tapered through hole is provided with a positioning groove, which is close to the large port of the tapered through hole, and the positioning groove extends to The large port of the tapered through hole, the variable diameter taper sleeve is matched with the tapered through hole, the outer wall of the variable diameter tapered sleeve is provided with a positioning protrusion, the positioning protrusion is close to the large port of the variable diameter tapered sleeve, and the positioning protrusion extends to the variable diameter taper sleeve. The large port of the diameter taper sleeve, the variable diameter taper sleeve constitutes the taper fixing hole, the positioning protrusion is arranged on the inner wall of the variable diameter taper sleeve, when the inner honing wheel is installed in the variable diameter taper sleeve, the inner wall of the variable diameter taper sleeve The positioning protrusions on the upper part are embedded in the positioning grooves on the outer wall of the inner honing wheel; the outer rings of the first rolling bearing and the second rolling bearing are relatively fixed to the inner wall of the fixing hole of the fixing piece, and the inner rings of the first rolling bearing and the second rolling bearing correspond to The inner rings of the first rolling bearing and the second rolling bearing are fixedly connected with the two ends of the worm gear. 5. The CNC internal gear honing wheel tool holder as claimed in claim 4, characterized in that: the fixed part includes a fixed frame, two annular seals, an annular front cover, and an annular rear cover, and the fixed frame is provided with There is the fixing hole, the inner wall of the fixing hole is provided with a through hole for the rotation drive to pass through, and the inner wall of the fixing hole is provided with a first positioning annular protrusion and a second annular protrusion, The first positioning annular protrusion corresponds to the upper opening close to the fixing hole, and the second positioning annular protrusion corresponds to the lower opening close to the fixing hole. After the worm gear is arranged in the fixing hole, the first rolling bearing After the second rolling bearing is installed from the upper opening and the lower opening of the fixing hole, the first positioning annular protrusion blocks the outer ring of the first rolling bearing, and the second positioning annular protrusion blocks the outer ring of the second rolling bearing, In order to fix the distance between the first rolling bearing and the second rolling bearing, after the two annular seals are installed from the upper opening and the lower opening of the fixing hole, the corresponding ring-shaped front cover plate and annular rear cover plate It covers the upper opening and the lower opening of the fixing hole, and is fixedly connected with the fixing frame, so as to fix the inner honking wheel clamping piece in the fixing hole. 6. The CNC internal gear honing wheel tool holder as claimed in claim 5, characterized in that: the surface of the ring-shaped front cover plate opposite to the ring-shaped rear cover plate is provided with a third ring-shaped positioning protrusion, a fourth ring The annular rear cover is provided with a fifth annular positioning convex, a sixth annular positioning convex, and a seventh annular positioning convex on the surface opposite to the annular front cover. The annular front The third annular positioning protrusion of the cover plate abuts against the outer ring of the first rolling bearing, the fourth annular positioning protrusion of the annular front cover abuts against the end of the worm wheel, and the fifth annular positioning protrusion of the annular rear cover abuts against the end of the worm wheel. The annular positioning protrusion abuts against the outer ring of the second rolling bearing, the sixth annular positioning protrusion of the annular back cover abuts against the other end of the worm wheel and the end of the variable diameter taper sleeve, and the annular back cover The seventh annular positioning protrusion of the plate abuts against the end of the inner honing wheel, thereby fixing the first rolling bearing, the second rolling bearing, the worm wheel, the variable diameter taper sleeve and the inner honing wheel together.