CN210412884U

CN210412884U - Gear hobbing machine

Info

Publication number: CN210412884U
Application number: CN201920734637.1U
Authority: CN
Inventors: 周顺金
Original assignee: Taizhou Geling Machinery Co ltd
Current assignee: Taizhou Geling Machinery Co.,Ltd.
Priority date: 2019-05-21
Filing date: 2019-05-21
Publication date: 2020-04-28
Anticipated expiration: 2029-05-21

Abstract

The utility model relates to a gear machining field wherein discloses a gear hobbing machine for processing gear blank, it includes base, hobbing cutter mechanism and gear anchor clamps, be provided with the burring unit on the base, install the cutter that is used for the burring on the burring unit, the cutter includes cutting edge and handle of a knife, the cutting edge with the terminal surface laminating under the gear blank. The utility model discloses have gear hobbing machine when gear hobbing, the gear blank rotates along with gear fixture, and the burr that remains at the gear blank lower extreme can be struck off in step to the cutter on the burring unit, avoids the artifical burr that removes of later stage, improves gear production efficiency's effect.

Description

Gear hobbing machine

Technical Field

The utility model belongs to the technical field of the technique of gear machining and specifically relates to a gear hobbing machine is related to.

Background

Gears and gear products thereof are important basic parts of mechanical equipment, the main transmission parts of most mechanical complete equipment are gear transmission, and the conventional gear machining mode comprises a profiling method and a generating method, wherein the generating method is usually to machine the gears by using a hobbing machine.

The existing Chinese patent with publication number CN201529814U discloses a full-automatic gear hobbing machine, which comprises a base, a hobbing cutter mechanism and a gear clamp, wherein the gear clamp comprises an upper ejector pin and a lower ejector pin, the gear clamp is used for fixing and driving a gear blank to rotate, the hobbing cutter mechanism moves to a working area under hydraulic control to perform hobbing operation and then resets, and the gear machining is completed at the moment.

The above prior art solutions have the following drawbacks: when gear hobbing is carried out, a hob cuts a gear blank from top to bottom, so that burrs are remained on the lower end face of a gear after gear hobbing is completed, the next procedure is influenced, and generally, after gear hobbing is completed, burrs are removed by adopting a file manually, so that time and labor are wasted, and the gear production efficiency is influenced.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a gear hobbing machine can get rid of the burr of remaining terminal surface under the gear blank in step at gear blank gear hobbing in-process to improve gear production efficiency.

The above utility model discloses an above-mentioned utility model purpose can realize through following technical scheme:

the utility model provides a gear hobbing machine for processing gear blank, includes base, hobbing cutter mechanism and gear clamp, be provided with the burring unit on the base, install the cutter that is used for the burring on the burring unit, the cutter includes cutting edge and handle of a knife, the cutting edge with gear blank terminal surface laminating down.

By adopting the technical scheme, when the gear hobbing machine works, the gear clamp drives the gear blank to rotate, the hobbing mechanism moves to the working area and starts to cut the gear blank from top to bottom, burrs are remained on the lower end face of the gear blank, and when the gear hobbing machine performs gear hobbing, the burrs are synchronously scraped off along with the rotation of the gear blank as the cutting edge is attached to the lower end face of the gear blank.

The utility model discloses further set up to: the deburring unit includes supporting component, adjusting part and knife rest, the supporting component is including being fixed in the support pole setting on the base and the support horizontal pole that the level set up, support horizontal pole one end and be provided with along the vertical hole that vertical direction link up, adjusting part slide peg graft in vertical hole, it is close to support the horizontal pole vertical hole one end is provided with along the vertical groove of vertical direction extension, vertical groove with vertical hole intercommunication, just vertical groove will it is close to support the horizontal pole vertical hole one end falls into a pair of vertical tight piece of clamp, vertically press from both sides and wear to be used for changing two on the tight piece the bolt and nut who vertically presss from both sides the piece interval.

Through adopting above-mentioned technical scheme, an appropriate regulation pole setting of length is pegged graft in vertical hole, and can be in vertical hole up-and-down slip, removes behind suitable position, through screwing up bolt and nut, reduces the distance between the vertical clamping block to reduce the fixed regulation pole setting in vertical hole aperture, improve the suitability to the gear blank of processing different tooth widths.

The utility model discloses further set up to: the adjusting part comprises an adjusting vertical rod and an adjusting transverse rod, the adjusting vertical rod is vertically arranged, the adjusting transverse rod is horizontally arranged, a transverse hole is formed in the upper end of the adjusting vertical rod in a penetrating mode along the horizontal direction, the adjusting transverse rod is slidably inserted into the transverse hole, a transverse groove extending along the horizontal direction is formed in the upper end of the adjusting vertical rod, the transverse groove is communicated with the transverse hole, the transverse groove is used for adjusting the upper end of the adjusting vertical rod to be divided into a pair of transverse clamping blocks, and bolt nuts used for changing the distance between the transverse clamping blocks are arranged on the transverse clamping blocks in a penetrating mode.

Through adopting above-mentioned technical scheme, a suitable regulation horizontal pole of length is pegged graft in the transverse hole, and can the horizontal slip in the transverse hole, removes behind suitable position, through screwing up bolt and nut, reduces the distance between the horizontal tight piece of clamp to reduce the fixed regulation horizontal pole in transverse hole aperture, improve the suitability to the gear blank of processing different diameters.

The utility model discloses further set up to: the knife rest comprises a knife and a pair of separation blades which are fixed on the adjusting component in parallel, the knife handle is placed between the separation blades, and screws which are abutted to the knife handle are arranged on the separation blades.

Through adopting above-mentioned technical scheme, but the angle between manual adjustment cutting edge and horizontal plane, then screw up the screw, screw one end butt is on the handle of a knife, presss from both sides tight fixed cutter and fixes the contained angle of cutting edge and horizontal plane promptly to the gear blank of the different chamfer inclinations of adaptation.

The utility model discloses further set up to: the cutting blade is characterized in that a rotating hole is formed below the cutting edge, a pin shaft is inserted into the rotating hole, and a pin hole matched with the pin shaft is formed in the blocking piece.

Through adopting above-mentioned technical scheme, the cutting edge can revolute and move the hole at certain within range internal rotation, the gear blank of the different chamfer inclinations of ability automatic adaptation, then screws up the screw with fixed cutter, avoids the cutter to rock at the burr in-process of striking off, causes the gear to scrap.

The utility model discloses further set up to: the knife rest with it is provided with the fine setting subassembly to adjust the horizontal pole junction, the fine setting subassembly includes the T venturi tube and slides and set up in intraductal fine setting piece and regulating block, the T venturi tube includes xarm and longitudinal wall, the middle part of xarm with the longitudinal wall is connected perpendicularly, the xarm with the longitudinal wall intercommunication, the xarm with adjust the coaxial setting of horizontal pole, be provided with the regulating block in the longitudinal wall, the xarm is kept away from be provided with the fine setting piece in adjusting horizontal pole one end, fixedly connected with quarter butt on the fine setting piece, quarter butt other end fixed connection the knife rest, the fine setting piece with the contact site of regulating block sets up to the wedge, just the fine setting piece with constitute L shape behind the regulating block butt.

Through adopting above-mentioned technique, promote the regulating block to intraductal direction, because of the contact site of regulating block and fine setting piece sets up to the wedge, then extrusion force direction on its contact surface is the slant, receive the component effect of slant extrusion force in the knife rest axial, the fine setting piece is to keeping away from regulation horizontal pole one end and remove, and promote the separation blade and install the cutter on the separation blade through the quarter butt and remove to being close to gear blank direction, and when the wedge-shaped angle of fine setting piece is greater than 45, the displacement of regulating block is greater than the displacement of fine setting piece, guarantee the positioning accuracy of cutter.

The utility model discloses further set up to: one end, far away from the cross arm, of the longitudinal arm is fixedly connected with a blocking cover, an adjusting bolt is arranged on the blocking cover, and one end of the adjusting bolt is abutted to the adjusting block.

Through adopting above-mentioned technical scheme, inwards support tight regulating block through rotatory adjusting bolt, the regulating block is at the intraductal forward movement of trailing arm, extrudees fine setting piece, and fine setting piece is to keeping away from regulation horizontal pole one end and remove to promote the separation blade and install the cutter on the separation blade and remove to being close to gear blank direction through the quarter butt, convert the rotation of bolt into the slip of regulating block, the secondary fine setting further improves the positioning accuracy of cutter.

The utility model discloses further set up to: the short rod is sleeved with a return spring, a spring baffle is fixedly connected to a pipe orifice of one end, far away from the adjusting cross rod, of the cross arm, one end of the return spring abuts against the fine adjustment block, the other end of the return spring abuts against the spring baffle, and the return spring has a certain pre-pressing force.

Through adopting above-mentioned technical scheme, when rotatory adjusting bolt outwards removed, the regulating block reduced the extrusion force of micromatic setting, and the micromatic setting is to being close to the horizontal pole direction of regulation and removing under reset spring's thrust, and the micromatic setting drives the separation blade and installs the cutter on the separation blade through the quarter butt pole and removes to keeping away from gear blank direction, promotes regulating block butt in adjusting bolt to the micromatic setting.

To sum up, the utility model discloses a beneficial technological effect does:

1. when the gear is hobbed, the residual burrs on the end face of the gear are synchronously scraped on the other side of the hobbing cutter mechanism, so that the later manual scraping of the burrs is reduced or even eliminated, and the gear production efficiency is improved;

2. by using the slidable support rod and the slidable tool rest, gears with different tooth widths and different diameters can be arranged, so that the support rod and the tool rest in various forms can be prevented from being stored due to the fact that gears of different types are machined;

3. the fine setting subassembly makes the laminating of cutting edge and gear lower extreme inseparabler, improves machining precision and yields, reduces the artifical deburring of reprocessing in later stage, improves gear machining efficiency.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic structural view of the deburring unit.

Fig. 3 is an exploded view of the connection structure of the tool holder and the tool.

FIG. 4 is a schematic diagram of a trim assembly.

In the figure, 1, a base; 2. a hob mechanism; 3. a gear clamp; 31. a sliding seat; 32. a slide rail; 33. an upper thimble; 34. a lower thimble; 35. a thimble seat; 4. a deburring unit; 41. a support assembly; 411. supporting the upright stanchion; 412. a support rail; 413. a longitudinal bore; 414. a longitudinal slot; 415. a longitudinal clamping block; 42. an adjustment assembly; 421. adjusting the vertical rod; 422. a transverse slot; 423. a transverse bore; 424. a transverse clamping block; 425. adjusting the cross bar; 43. a fine tuning component; 430. adjusting the bolt; 431. a blocking cover; 432. an adjusting block; 433. a T-shaped pipe; 434. a cross arm; 435. a trailing arm; 436. fine tuning blocks; 437. a short bar; 438. a return spring; 439. a spring baffle; 44. a tool holder; 441. a baffle plate; 442. a pin hole; 443. a screw; 444. a cutter; 445. a blade; 446. a knife handle; 447. rotating the hole; 448. a pin shaft; and 5, gear blank.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Referring to fig. 1, a gear hobbing machine comprises a base 1, a hobbing cutter mechanism 2 arranged on the base 1 and a gear clamp 3, wherein the gear clamp 3 comprises an ejector pin base 35 and a lower ejector pin 34 arranged at the upper end of the ejector pin base 35, the rotation axis of the ejector pin base 35 extends along the vertical direction, a slide rail 32 extending along the vertical direction and a sliding base 31 matched with the slide rail 32 are arranged on the base 1, and an upper ejector pin 33 is arranged at the lower end of the sliding base 31; the gear blank 5 is horizontally fixed on the lower thimble 34, the sliding seat 31 drives the upper thimble 33 to slide downwards, so that the upper thimble 33 and the lower thimble 34 extrude the center of the fixed gear blank 5, the lower thimble 34 drives the gear blank 5 to rotate, and the hob mechanism 2 is driven to be close to the gear blank 5, so that the gear blank 5 is machined.

Referring to fig. 1 and 2, a deburring unit 4 is arranged on the side of the base 1 away from the hob mechanism 2, and the deburring unit 4 comprises a supporting component 41 fixed on the side wall of the base 1, an adjusting component 42 arranged on the supporting component 41, a tool rest 44 for mounting a tool 444, and a fine-tuning component 43 for connecting the tool rest 44 with the adjusting component 42; the supporting component 41 comprises a supporting upright 411 extending in the vertical direction, the supporting upright 411 is fixed on the side wall of the base 1 through a bolt, a supporting cross bar 412 extending in the horizontal direction is arranged at the upper end of the supporting upright 411, one end, far away from the supporting upright 411, of the supporting cross bar 412 is provided with a longitudinal hole 413 penetrating in the vertical direction and a longitudinal groove 414 communicated with the longitudinal hole 413, one end, far away from the supporting upright 411, of the supporting cross bar 412 is divided into a pair of longitudinal clamping blocks 415 through the longitudinal groove 414, bolt nuts for reducing the distance between the two longitudinal clamping blocks 415 penetrate through the longitudinal clamping blocks 415, and when the distance between the two longitudinal clamping blocks 415 is reduced, the aperture of the longitudinal hole 413 is randomly reduced.

The adjusting assembly 42 comprises an adjusting upright rod 421 inserted in the longitudinal hole 413 in a sliding manner and extending in a vertical direction, and an adjusting cross rod 425 extending in a horizontal direction, wherein a transverse hole 423 penetrating in the horizontal direction is formed in the upper end of the adjusting upright rod 421, the adjusting cross rod 425 is inserted in the transverse hole 423 in a sliding manner, a transverse groove 422 extending in the horizontal direction is formed in the upper end of the adjusting upright rod 421, the transverse groove 422 is communicated with the transverse hole 423, the upper end of the adjusting upright rod 421 is divided into a pair of transverse clamping blocks 424 by the transverse groove 422, a bolt and a nut for changing the distance between the two transverse clamping blocks 424 penetrate through the transverse clamping blocks 424, and when the distance between the two transverse clamping blocks 424 is reduced, the aperture of the transverse hole 423 is randomly reduced.

The adjusting upright rod 421 is slidably inserted into the longitudinal hole 413, the adjusting cross rod 425 is slidably inserted into the transverse hole 423, the longitudinal hole 413 can reduce the aperture by reducing the distance between the longitudinal clamping blocks 415 to fix the adjusting upright rod 421, and the transverse hole 423 can reduce the aperture by reducing the distance between the transverse clamping blocks 424 to fix the adjusting upright rod 421, i.e., the two sets of matching can realize the movement and fixation of the tool holder 44 in the vertical direction and the horizontal direction to adapt to the production and processing of gear blanks 5 of different models (tooth width and diameter).

Referring to fig. 3, the tool holder 44 includes a tool 444 and a pair of blocking pieces 441 fixed in parallel to the adjusting assembly 42, the tool 444 includes a cutting edge 445, a tool shank 446, a rotating hole 447 formed in the tool shank 446, and a pin 448 rotatably disposed in the rotating hole 447, the tool shank 446 is placed between the blocking pieces 441, the blocking pieces 441 are provided with pin holes 442 matched with the pin 448, the tool 444 can rotate around the axis of the rotating hole 447 between the two blocking pieces 441, and the blocking pieces 441 are provided with screws 443, one end of which abuts against the tool shank 446 to fix the tool 444.

Before gear hobbing, the cutter 444 is located below the bevel of the gear blank 5, the deburring unit 4 needs to be adjusted, during adjustment, the adjusting cross rod 425 is moved firstly, the axis of the rotating hole 447 is located right below the ring formed by the gear tooth root circle and the gear addendum circle, then the adjusting cross rod 425 is fixed, the adjusting vertical rod 421 is moved upwards, one end, away from the cutter rest 44, of the cutting edge 445 is firstly contacted with the lower end face of the gear blank 5, along with the continuous rising of the adjusting vertical rod 421, the cutter 444 starts to rotate around the rotating hole 447 until the cutting edge 445 is attached to the lower end face of the gear blank 5 provided with the chamfer, the adjusting vertical rod 421 is fixed, then the cutter 444 is fixed by screwing the screw 443, and the reliability of the.

Referring to fig. 4, in order to ensure that the axis of the rotating hole 447 is located right below the ring formed by the gear root circle and the addendum circle, even the axis of the rotating hole 447 is tangent to the gear reference circle column (at this time, the knife edge 445 is best attached to the lower end of the gear blank 5), a fine adjustment assembly 43 is disposed between the knife rest 44 and the adjusting crossbar 425, the fine adjustment assembly 43 includes a T-shaped tube 433, the T-shaped tube 433 includes a cross arm 434 and a longitudinal arm 435, the middle of the cross arm 434 is vertically connected to the longitudinal arm 435 and is communicated with the longitudinal arm 435, the cross arm 434 is coaxially disposed with the adjusting crossbar 425 and is fixed to the adjusting crossbar 425, an adjusting block 432 is slidably disposed in the tube of the longitudinal arm 435, a blocking cover 431 is fixedly connected to the nozzle of the longitudinal arm 435, an adjusting bolt 430 is disposed on the blocking cover 431, one end of the adjusting bolt 430 abuts against the adjusting block 432, a fine adjustment block 436 is slidably disposed in the tube, the other end of the short rod 437 is fixedly connected with a blocking piece 441, a return spring 438 is sleeved outside the short rod 437, a pipe orifice of one end, away from the adjusting transverse rod 425, of the transverse arm 434 is fixedly connected with a spring baffle 439, one end of the return spring 438 abuts against the fine adjustment block 436, the other end of the return spring abuts against the spring baffle 439, the return spring 438 has certain pretightening force, the contact part of the fine adjustment block 436 and the adjusting block 432 is wedge-shaped, and the fine adjustment block 436 and the adjusting block 432 abut against each other to form an L shape.

The adjusting block 432 is tightly pressed inwards by rotating the adjusting bolt 430, the adjusting block 432 only can move in the direction away from the pipe orifice in the pipe of the longitudinal arm 435 to extrude the fine adjusting block 436, and because the contact part of the adjusting block 432 and the fine adjusting block 436 is wedge-shaped, the extrusion force direction on the contact surface of the adjusting block 432 is oblique, and under the action of oblique extrusion force component, the fine adjusting block 436 moves towards one end away from the adjusting cross rod 425 and pushes the blocking piece 441 and the cutter 444 arranged on the blocking piece 441 to move towards the direction close to the gear blank 5 through the short rod 437; when the adjusting bolt 430 is rotated to move outwards, the pressing force of the adjusting block 432 on the fine adjusting block 436 is reduced, the fine adjusting block 436 moves towards the direction close to the adjusting cross bar 425 under the pushing force of the return spring 438, the fine adjusting block 436 drives the blocking piece 441 and the cutter 444 installed on the blocking piece 441 to move away from the direction of the gear blank 5 through the short rod 437, and the fine adjusting block 436 pushes the adjusting block 432 to abut against the adjusting bolt 430.

The implementation principle of the embodiment is as follows: the deburring unit 4 is arranged on the base 1 on one side, far away from the hobbing cutter mechanism 2, of the gear blank 5, the cutter 444 is arranged on the deburring unit 4, the cutting edge 445 of the cutter 444 is attached to the lower end face of the gear blank 5, when the gear hobbing machine works, the hobbing cutter cuts the gear blank 5 from top to bottom, burrs are remained on the lower end face of the gear blank 5, the burrs rotate to one side, far away from the hobbing cutter mechanism 2, along with the gear blank 5, and are synchronously scraped by the cutting edge 445 attached to the lower end of the gear blank 5, so that the burrs are prevented from being manually removed after gear hobbing is completed, and the production; meanwhile, the adjusting component 42, the rotatable cutter 444 and the fine adjusting component 43 ensure the tightness of the fit between the cutting edge 445 and the lower end face of the gear blank 5 when gears of different models are processed, and improve the processing precision and the yield.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. The utility model provides a gear hobbing machine for processing gear blank (5), includes base (1), hobbing cutter mechanism (2) and gear clamp (3), its characterized in that: be provided with burring unit (4) on base (1), install cutter (444) that are used for the burring on burring unit (4), cutter (444) include cutting edge (445) and handle of a knife (446), cutting edge (445) with gear blank (5) lower end face laminating.

2. A gear hobbing machine as claimed in claim 1, characterized in that: the deburring unit (4) comprises a supporting component (41), an adjusting component (42) and a tool rest (44), the supporting component (41) comprises a supporting upright rod (411) fixed on the base (1) and a supporting cross rod (412) arranged horizontally, one end of the supporting cross bar (412) is provided with a longitudinal hole (413) which penetrates through along the vertical direction, the adjusting component (42) is inserted into the longitudinal hole (413) in a sliding mode, a longitudinal groove (414) extending in the vertical direction is formed in one end, close to the longitudinal hole (413), of the supporting cross rod (412), the longitudinal groove (414) is communicated with the longitudinal hole (413), and the longitudinal groove (414) divides one end of the support rail (412) near the longitudinal hole (413) into a pair of longitudinal clamping blocks (415), and the longitudinal clamping blocks (415) are provided with bolts and nuts for changing the distance between the two longitudinal clamping blocks (415).

3. A gear hobbing machine as claimed in claim 2, characterized in that: adjusting part (42) including regulation pole setting (421) that set up along vertical direction and regulation horizontal pole (425) that set up along the horizontal direction, regulation pole setting (421) upper end is provided with horizontal hole (423) that link up along the horizontal direction, adjust horizontal pole (425) slip peg graft with in horizontal hole (423), it is provided with horizontal groove (422) that extend along the horizontal direction to adjust pole setting (421) upper end, horizontal groove (422) with horizontal hole (423) intercommunication, just horizontal groove (422) will adjust pole setting (421) upper end and fall into a pair of horizontal clamp piece (424), wear on horizontal clamp piece (424) to be used for changing two bolt and nut of horizontal clamp piece (424) interval.

4. A gear hobbing machine as claimed in claim 3, characterized in that: the tool rest (44) comprises a tool (444) and a pair of blocking pieces (441) which are fixed on the adjusting assembly (42) in parallel, the tool shank (446) is placed between the blocking pieces (441), and the blocking pieces (441) are provided with screws (443) which abut against the tool shank (446).

5. A gear hobbing machine as claimed in claim 4, characterized in that: the knife edge (445) is provided with below and rotates hole (447), it has round pin axle (448) to peg graft in rotating hole (447), be provided with on separation blade (441) with round pin axle (448) complex pinhole (442).

6. A gear hobbing machine as claimed in claim 3, characterized in that: the fine adjustment assembly (43) is arranged at the joint of the tool rest (44) and the adjusting cross rod (425), the fine adjustment assembly (43) comprises a T-shaped pipe (433), a fine adjustment block (436) and an adjustment block (432) which are arranged in the pipe in a sliding mode, the T-shaped pipe (433) comprises a cross arm (434) and a longitudinal arm (435), the middle of the cross arm (434) is vertically connected with the longitudinal arm (435), the cross arm (434) is communicated with the longitudinal arm (435), the cross arm (434) and the adjusting cross rod (425) are coaxially arranged, the adjustment block (432) is arranged in the longitudinal arm (435), the fine adjustment block (436) is arranged in one end, away from the adjusting cross rod (425), of the cross arm (434), a short rod (437) is fixedly connected onto the fine adjustment block (436), the other end of the short rod (437) is fixedly connected with the tool rest (44), and the contact part of the fine adjustment block (436) and the adjustment block (432) is arranged, and the fine adjustment block (436) is abutted with the adjustment block (432) to form an L shape.

7. A gear hobbing machine as claimed in claim 6, characterized in that: one end, far away from the cross arm (434), of the longitudinal arm (435) is fixedly connected with a blocking cover (431), an adjusting bolt (430) is arranged on the blocking cover (431), and one end of the adjusting bolt (430) is abutted to the adjusting block (432).

8. A gear hobbing machine as claimed in claim 6, characterized in that: the short rod (437) is sleeved with a return spring (438), the cross arm (434) is far away from a pipe orifice at one end of the adjusting cross rod (425) and is fixedly connected with a spring baffle (439), one end of the return spring (438) abuts against the fine adjustment block (436), the other end of the return spring abuts against the spring baffle (439), and the return spring (438) has a certain pre-pressing force.