CN213702074U - Gear grinding machine with grinding head - Google Patents

Abstract

The application relates to a gear grinding machine with a grinding head, which relates to the technical field of gear grinding machines and comprises a grinding head lathe and a workpiece lathe, wherein the grinding head lathe is provided with a grinding head seat, the workpiece lathe is provided with a workpiece seat, the grinding head seat is provided with a grinding head, the grinding head lathe is provided with an adjusting and driving mechanism, the adjusting mechanism adjusts the position of the grinding head, and the driving mechanism drives the grinding head to move; the driving mechanism comprises a driving assembly and a swinging assembly, the swinging assembly comprises a swinging arm, the driving assembly drives the swinging arm to swing, and the grinding head seat is connected with the swinging arm. This application has the bistrique and can grind the effect to the flank of tooth.

Description

Gear grinding machine with grinding head

Technical Field

The application relates to the field of gear grinding machines, in particular to a gear grinding machine with a grinding head.

Background

With the advance of industrial modernization process, the processing and manufacturing industries in the industrial field are developed towards mechanization and automation. The method is particularly important in the fields of tool maintenance and processing. A gear grinding machine is a metal cutting machine for finishing saw blades and gears, and uses a grinding wheel as a tool to grind the machined tooth surface to improve the precision and surface finish of a workpiece, and the machining method is called as "gear grinding".

In the related art, the gear grinding machine grinds the tooth surface of the tooth socket of the bevel gear by the grinding wheel, the grinding wheel is fed toward the bottom of the groove of the tooth socket during grinding, and grinding of one tooth surface is completed every time the grinding wheel is fed. In the grinding process, the gear rotates, so that the grinding sheet grinds each tooth surface in sequence. Generally, in bevel gears, the grinding wheel blades grind towards the tooth grooves without blocking the penetration.

In view of the above-mentioned related art, the inventor believes that in a gear grinding machine in the related art, in relation to a special workpiece, a transmission gear on an aircraft engine includes a shaft portion to which a bevel gear portion and a bevel gear portion are fixedly connected, and a tooth width of the gear portion extends in a direction toward the shaft portion, and when the transmission gear is ground by a grinding sheet, the grinding sheet is hindered by the shaft portion. The grinding sheet is changed into a grinding head for grinding, the grinding head has the same feeding direction with the grinding sheet, when the grinding head grinds the tooth surface of a specific workpiece, the grinding head feeds towards the direction of the groove bottom of a gear tooth groove to grind the tooth surface in a linear mode, and the problem that the whole tooth surface of the workpiece cannot be ground exists.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem that the bistrique can only grind on a line, this application provides a gear grinding machine with bistrique.

The application provides a gear grinding machine with bistrique adopts following technical scheme:

a gear grinding machine with a grinding head comprises a grinding head lathe and a workpiece lathe, wherein the grinding head lathe is provided with a grinding head seat, the workpiece lathe is provided with a workpiece seat, the grinding head seat is provided with a grinding head, and the grinding head lathe is provided with a driving mechanism for driving the grinding head to move;

the driving mechanism comprises a driving assembly and a swinging assembly, the swinging assembly comprises a swinging arm, the driving assembly drives the swinging arm to swing, and the grinding head seat is connected with the swinging arm.

Through adopting above-mentioned technical scheme, drive assembly drive swing arm swing of subassembly for the bistrique on the bistrique seat can make round trip movement. The adjusting mechanism adjusts the position of the grinding head, so that the grinding head moves back and forth along the tooth width direction under the action of the swing arm, and the grinding head grinds the whole tooth surface by combining the feeding stroke of the grinding head into the tooth groove.

Optionally, the swing assembly further comprises a swing seat fixed to the grinding head lathe, the swing seat is provided with a first guide rail, and the swing arm is connected with a first guide block matched with the first guide rail.

Through adopting above-mentioned technical scheme, the unsettled swing of swing arm, stability is relatively poor, and first guide rail sets up for swing that the swing arm can be stable.

Optionally, drive assembly includes first driver, it still includes drive plate and driven plate to sway the subassembly, the drive plate with the output shaft vertical connection of first driver, the drive plate is kept away from the one end of first driver is installed and is turned round the head, waist type hole has been seted up on the driven plate, turn round the head with waist type hole lock, turn round the head with driven plate sliding connection, just it is in to turn round the head under the drive plate effect waist type is downthehole to make reciprocating motion, the swing arm with driven plate fixed connection.

Through adopting above-mentioned technical scheme, the drive plate of swaing the subassembly is connected with the output shaft fixed of first driver, and the perpendicular center pin of the output shaft of first driver of drive plate simultaneously drives the drive plate after the output shaft of first driver rotates and rotates, and the head that twists reverse of installation on the drive plate is circular motion, twists reverse the head motion in-process and lie in the waist type hole of driven plate all the time to do reciprocating motion in waist type hole, thereby the drive driven plate is straight reciprocating motion, and then the swing arm swing of drive.

Optionally, the second guide rail has still been seted up to the seat of swaing, installs the fly jib in the second guide rail, install on the fly jib with second guide rail complex second guide block, the swing arm with be equipped with the gear between the fly jib, the gear with it rotates to be connected to sway the seat, the swing arm with the equal fixedly connected with rack of side of fly jib, two the rack all with gear engagement, the swing arm with the fly jib is in parallel and crisscross pendulum under the effect of first driver.

Through adopting above-mentioned technical scheme, drive gear rotation when the swing arm removes, the swing of gear rotation back drive fly jib, the fly jib swings in the second guide rail, further improves swing arm wobbling stability.

Optionally, the adjusting mechanism includes a cross sliding table, the swing arm is connected with a mounting plate, the cross sliding table is mounted on the mounting plate, and the grinding head seat is fixedly mounted on the cross sliding table; the cross sliding table drives the grinding head on the grinding head seat to move in two directions which are perpendicular to each other.

Through adopting above-mentioned technical scheme, the bistrique on the cross slip table drive bistrique seat removes in two directions of mutually perpendicular, plays the effect of adjusting the bistrique position.

Optionally, the grinding head comprises a grinding handle and an end head fixedly connected with the grinding handle, and the end head is conical.

By adopting the technical scheme, the end head is the main part of the grinding head for applying work to the workpiece, the grinding handle is used for prolonging the end head, and the interference in the grinding process of the grinding head is reduced. The conical end enables the grinding head to be more accurate in positioning when grinding a workpiece, and improves the quality of the grinding head for grinding the workpiece.

Optionally, the grinding head lathe is connected with a sliding table, the sliding table is fixed with a second driver, the workpiece lathe comprises a base for supporting the workpiece seat, and an output shaft of the second driver is connected with a driving piece for pushing the base to move.

By adopting the technical scheme, after one tooth surface of the workpiece is ground by the grinding head, the other tooth surface needs to be replaced for grinding, when the tooth surface is replaced by the workpiece, the workpiece needs to rotate relatively, and the workpiece can be hindered by the grinding head in the relative rotation process. The driving piece pushes the base to be far away from the grinding head lathe under the action of the second driver, so that the workpiece is far away from the grinding head, and the workpiece is convenient to rotate and change the ground tooth surface.

Optionally, the driving part comprises a driving part and a driven part, the driving part is connected with an output shaft of the second driver, a torsion block is connected between the driven part and the base, and the base is hinged to the driven part through the torsion block; the sliding table is provided with a sliding rail, one end, far away from the workpiece seat, of the base is provided with a sliding block, and the sliding block is located in the sliding rail.

Through adopting above-mentioned technical scheme, second driver drive initiative portion rotates, and initiative portion rotates the back and drives the driven part and remove to the direction removal of drive base along the slide rail.

In summary, the present application includes at least one of the following beneficial technical effects:

1. through the arrangement of the swing assembly, the swing arm of the swing assembly can play a role in driving the grinding head to move under the action of the driving assembly;

2. workpieces of the same type and different types are replaced through the arrangement of the adjusting mechanism, and the adjusting mechanism can achieve the effect of adjusting the position of the grinding head;

3. through the setting of second driver, driving piece and the platform that slides, the second driver drives the driving piece and promotes the work piece lathe, can play the effect that makes things convenient for the work piece to rotate and change the flank of tooth.

Drawings

Fig. 1 is a schematic view of the overall structure of a gear grinding machine in the embodiment of the present application.

Fig. 2 is a schematic view of the entire structure of the gear grinding device display driving mechanism in the embodiment of the present application.

Fig. 3 is a schematic structural view showing a driving mechanism, a grinding head and a cradle in an embodiment of the present application.

Fig. 4 is an enlarged schematic view of a portion a in fig. 3.

Fig. 5 is a schematic structural diagram of the first driving assembly and its driving components in the embodiment of the present application.

FIG. 6 is a schematic view of the connection of the workpiece lathe to the slide table in the embodiment of the present application.

Fig. 7 is an enlarged schematic view of a portion B in fig. 6.

Description of reference numerals: 1. grinding head lathes; 12. a drive mechanism; 121. a drive assembly; 1211. a first driver; 1212. a drive shaft; 122. a swing assembly; 1221. a driving plate; 1222. a driven plate; 1228. twisting the head; 13. a cradle; 14. a burr base; 141. grinding heads; 1411. grinding a handle; 1412. a tip; 2. a workpiece lathe; 21. a fifth driver; 22. a workpiece seat; 221. a base; 222. a support pillar; 223. a fixed head; 23. a base; 3. a sliding table; 32. a second driver; 33. a drive member; 331. an active part; 332. a driven part; 333. twisting the block; 34. a slide rail; 4. a swing seat; 41. a positive plate; 411. a first guide rail; 412. a second guide rail; 42. a counter plate; 5. swinging arms; 51. a first guide block; 52. a rack; 53. a drive gear; 54. mounting a plate; 6. an auxiliary arm; 61. a second guide block; 7 an adjusting mechanism; 71. a cross sliding table; 711. a third driver; 712. and a fourth driver.

Detailed Description

The present application is described in further detail below with reference to figures 1-7.

The embodiment of the application discloses gear grinding machine with bistrique. Referring to fig. 1 and 2, the gear grinding device comprises a grinding head lathe 1 and a workpiece lathe 2, wherein the grinding head lathe 1 is connected with a sliding table 3, and the workpiece lathe 2 is connected with the sliding table 3 in a sliding manner. The grinding head lathe 1 is fixed with an adjusting mechanism 7, a driving mechanism 12, a rotatable cradle 13 and a grinding head seat 14, and the grinding head seat 14 is positioned at one end of the cradle 13 close to the workpiece lathe 2 and is fixedly connected with the adjusting mechanism 7. The grinding head seat 14 is provided with a rotatable grinding head 141, and before the grinding head 141 grinds a specific workpiece, the adjusting mechanism 7 adjusts the position of the grinding head 141 according to the model of the workpiece bevel gear part. When the grinding head 141 grinds, the driving mechanism 12 drives the grinding head 141 to move.

Referring to fig. 3 and 4, the grater 141 includes a grater shank 1411 and a head 1412, the grater shank 1411 being mounted on the grater base 14. In this embodiment, the shape of the head 1412 is a cone, and the diameter of the end of the head 1412 is millimeter, so that the grinding accuracy of the grinding head 141 is improved.

Referring to fig. 2 and 4, for different sizes and models of workpieces of the same type, the position of the grinding head 141 needs to be adjusted by the adjusting mechanism 7 before the grinding head 141 works, so that the grinding head 141 can move back and forth in the tooth width direction of the workpiece to be machined under the action of the driving mechanism 12. The adjusting mechanism 7 comprises a cross sliding table 71, the grinding head seat 14 is fixed on the cross sliding table 71, the cross sliding table 71 comprises a third driver 711 and a third driver 712, in this embodiment, the third driver 711 and the third driver 712 are both servo motors, and the position of the grinding head seat 14 can be adjusted through the cooperation of the third driver 711 and the third driver 712, so that the position of the grinding head 141 can be adjusted.

Referring to fig. 2 and 4, the driving mechanism 12 includes a driving assembly 121 and a swinging assembly 122, the driving assembly 121 includes a first driver 1211 and a transmission shaft 1212, the first driver 1211 is located on a side of the rotatable cradle 13 away from the grinding head seat 14 and is fixed to the grinding head lathe 1, the transmission shaft 1212 is coaxially and fixedly connected to an output shaft of the first driver 1211, the transmission shaft 1212 penetrates through a central axis of the rotatable cradle 13, the transmission shaft 1212 is rotatably connected to the cradle 13, and a swinging assembly for controlling the movement of the grinding head 141 is connected to an end of the transmission shaft 1212, which extends out of the cradle 13 away from the first driver 1211, so as to implement the movement of the grinding head 141.

Referring to fig. 2 and 5, the swing assembly includes a driving plate 1221, a driven plate 1222, a swing seat 4, a swing arm 5, and an auxiliary arm 6. The swing seat 4 comprises a positive plate 41 and a negative plate 42 which are arranged in parallel relatively and fixedly connected, the swing arm 5 is positioned between the positive plate 41 and the negative plate 42, and the negative plate 42 of the swing seat 4 is fixed on the swing platform 13. A driving plate 1221 of the swing assembly is perpendicular to and fixedly connected with the transmission shaft 1212, and one end of the driving plate 1221, which is far away from the transmission shaft 1212, is fixedly connected with a torsion head 1228; a waist-shaped hole is formed in the driven plate 1222, and the torsion head 1228 is installed in the waist-shaped hole, so that the driving plate 1221 and the driven plate 1222 form a sliding connection. The transmission shaft 1212 rotates under the action of the first driver 1211 to drive the driving plate 1221 to rotate, and the twisting head 1228 performs a circular motion under the action of the driving plate 1221. The torsion head 1228 reciprocates within the kidney-shaped hole of the driven plate 1222 during circular motion, thereby driving the driven plate 1222 to move back and forth in a direction perpendicular to the kidney-shaped hole. The swing arm 5 is fixedly connected with the driven plate 1222, and the swing arm 5 swings back and forth under the driving of the driven plate 1222. Two guide rails are arranged on the front plate 41, and the two guide rails are a first guide rail 411 and a second guide rail 412 respectively. The swing arm 5 is fixedly connected with at least one first guide block 51, the number of the first guide blocks 51 is at least one, and the first guide blocks 51 are installed in the first guide rail 411, so that the swing arm 5 can slide in the first guide rail 411 of the swing seat 4 under the action of the driven plate 1222. The first guide block 51 is matched with the counter plate 42 to play a limiting role, and the moving stability of the swing arm 5 is improved. The length of the counter plate 42 is smaller than that of the front plate 41, and the counter plate 42 leaves a movable space for the driven plate 1222, reducing the obstruction to the movement of the driven plate 1222.

Referring to fig. 5, the secondary arm 6 is fixedly connected with at least one second guide block 61, the number of the second guide blocks 61 is at least one, and the second guide blocks 61 are installed in the second guide rail 412. The opposite sides of the swing arm 5 and the auxiliary arm 6 are fixedly connected with racks 52, the front plate 41 is provided with a driving gear 53, and the two racks 52 are both meshed with the driving gear 53. Swing arm 5 drives drive gear 53 and rotates at the in-process that moves repeatedly, and fly jib 6 and swing arm 5 staggered displacement under drive gear 53 effect, and the stability that swing arm 5 removed can be increased in the setting of fly jib 6.

Referring to fig. 5, the swing arm 5 is connected with a mounting plate 54, the cross sliding table 71 is mounted on the mounting plate 54, and the grinding head 141 on the cross sliding table 71 is driven to move back and forth in the process of back and forth swing of the swing arm 5. In this embodiment, the first driver 1211 is a rotary motor.

Referring to fig. 2, in the present embodiment, the workpiece is a specific workpiece: the airplane transmission gear comprises a shaft part fixedly connected with a bevel gear part and a bevel gear part, and the central shaft position of the airplane transmission gear is of a hollow structure. The aircraft engine gears of the same type have different models and sizes, and the involute curves of bevel gear parts of different aircraft engine gears are different. According to different involutes, when the grinding head 141 works, a workpiece needs to be matched with the cradle 13 to rotate synchronously.

Referring to fig. 6 and 7, the workpiece lathe 2 is provided with a fifth driver 21, a workpiece seat 22 and a base 23 for fixing the workpiece seat 22, the workpiece seat 22 is used for installing a workpiece, the workpiece seat 22 comprises a base 221, a supporting column 222 and a fixing head 223, and the fixing head 223 is in threaded connection with the supporting column 222. The workpiece is mounted on the support column 222, and the position of the workpiece is fixed by the fixing head 223 cooperating with the base 221. The fifth driver 21 is installed in the base 221, and the supporting column 222 is coaxially and fixedly connected with the output shaft of the fifth driver 21.

Referring to fig. 2 and 7, the support column 222 is rotated by the fifth driver 21, thereby rotating the workpiece during machining. The fifth driver 21 is engaged with the rotating cradle 13 so that the rotating and moving grinding head 141 reciprocates in the tooth width direction of the tooth surface of the workpiece while feeding into the tooth space with the involute direction of the tooth surface as a reference, to grind the entire tooth surface of the specific transmission gear. The ratio of the rotation angle of the workpiece to the rotation angle of the cradle 13 is calculated according to the involute shapes of different engine gears. In the present embodiment, the fifth driver 21 is a rotary motor.

Referring to fig. 1 and 6, after one surface of the workpiece is machined by the grinding head 141, the other surface needs to be switched to be ground, and at this time, the workpiece needs to be rotated to change the surface, and the cradle 13 needs to be rotated to reset. A second driver 32 is fixed on the sliding table 3, and a driving piece 33 is connected to the second driver 32. In this embodiment, the second driver 32 is a rotating motor, the driving element 33 is a screw rod, the screw rod includes a driving portion 331 and a driven portion 332, the driving portion 331 is fixedly connected to the second driver 32, a torsion block 333 is connected between the base 23 and the driven portion 332, and the base 23 is hinged to the driven portion 332 through the torsion block 333. An arc-shaped sliding rail 34 is arranged on the sliding table 3, and a sliding block matched with the sliding rail 34 is connected to the base 23. The second driver 32 drives the driving portion 331 to move, so as to drive the driven portion 332 to move, and the driven portion drives the base 23 and the workpiece seat 22 fixedly connected with the base 23 to move, thereby facilitating the resetting of the cradle 13 and the rotation of the workpiece. After the cradle 13 is reset and the workpiece is rotated to change the tooth surface, the second driver 32 is started again to drive the workpiece holder 22 to rotate and move, so that the grinding stones 141 are aligned with the tooth surface to be ground again, and the driving mechanism 12 is started again so that the grinding stones 141 grind new tooth surfaces.

The implementation principle of the gear grinding device for the transmission gear of the airplane in the embodiment of the application is as follows: the blank of the airplane transmission gear is processed to form a plurality of conical teeth, after the processed airplane transmission gear is detected, whether each tooth surface of the airplane transmission gear meets the standard or not is calculated, the airplane transmission gear which does not meet the standard is arranged on the support of the workpiece seat 22, and the position of the workpiece is fixed through the matching of the fixing head 223 and the base 221. After the position of the workpiece is fixed, the third driver 711 and the third driver 712 are turned on according to the type of the workpiece, and the position of the grinding head 141 is adjusted. Then, the second driver 32 is started to pull the workpiece to a position close to the grinding head 141 by the driving member 33, and finally, the driving mechanism 12 and the fifth driver 21 are started to grind the workpiece by the grinding head 141, thereby removing the allowance detected by the workpiece and improving the quality of the workpiece.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims (8)

1. The utility model provides a gear grinding machine with bistrique, includes bistrique lathe (1) and work piece lathe (2), install headstock (14) on bistrique lathe (1), install work piece seat (22) on work piece lathe (2), its characterized in that: the grinding head seat (14) is provided with a grinding head (141), the grinding head lathe (1) is provided with an adjusting mechanism (7) and a driving mechanism (12), the adjusting mechanism (7) adjusts the position of the grinding head (141), and the driving mechanism (12) drives the grinding head (141) to move;

the driving mechanism (12) comprises a driving assembly (121) and a swinging assembly, the swinging assembly comprises a swinging arm (5), the driving assembly (121) drives the swinging arm (5) to swing, and the grinding head seat (14) is connected with the swinging arm (5).

2. The gear grinding machine with the grinding head according to claim 1, characterized in that: the swing assembly further comprises a swing seat (4) fixed with the grinding head lathe (1), a first guide rail (411) is arranged on the swing seat (4), and a first guide block (51) matched with the first guide rail (411) is connected to the swing arm (5).

3. The gear grinding machine with the grinding head according to claim 2, characterized in that: the driving assembly (121) comprises a first driver (1211), the swinging assembly further comprises a driving plate (1221) and a driven plate (1222), the driving plate (1221) is vertically connected with an output shaft of the first driver (1211), one end, far away from the first driver (1211), of the driving plate (1221) is provided with a twisting head (1228), the driven plate (1222) is provided with a waist-shaped hole, the twisting head (1228) is buckled with the waist-shaped hole, the twisting head (1228) is connected with the driven plate (1222) in a sliding mode, the twisting head (1228) does reciprocating motion in the waist-shaped hole under the action of the driving plate (1221), and the swinging arm (5) is fixedly connected with the driven plate (1222).

4. The gear grinding machine with the grinding head according to claim 3, characterized in that: swing seat (4) have still been seted up second guide rail (412), install in second guide rail (412) fly jib (6), install on fly jib (6) with second guide rail (412) complex second guide block (61), swing arm (5) with be equipped with the gear between fly jib (6), the gear with swing seat (4) rotate to be connected, swing arm (5) with the equal fixedly connected with rack (52) of side of fly jib (6), two rack (52) all with gear engagement, swing arm (5) with fly jib (6) are in parallel and crisscross swing under the effect of first driver (1211).

5. The gear grinding machine with the grinding head according to claim 2, characterized in that: the adjusting mechanism (7) comprises a cross sliding table (71), the swing arm (5) is connected with a mounting plate (54), the cross sliding table (71) is mounted on the mounting plate (54), and the grinding head seat (14) is fixed on the cross sliding table (71); the cross sliding table (71) drives the grinding head (141) on the grinding head seat (14) to move in two directions which are perpendicular to each other.

6. The gear grinding machine with the grinding head according to claim 1, characterized in that: the grinding head (141) comprises a grinding handle (1411) and a head (1412) fixedly connected with the grinding handle (1411), wherein the head (1412) is conical.

7. The gear grinding machine with the grinding head according to claim 1, characterized in that: grinding head lathe (1) is connected with slide table (3), and slide table (3) are fixed with second driver (32), work piece lathe (2) are including supporting base (23) of work piece seat (22), work piece seat (22) are fixed on base (23), the output shaft of second driver (32) is connected with and is used for promoting driving piece (33) that base (23) removed.

8. The gear grinding machine with the grinding head according to claim 7, characterized in that: the driving part (33) comprises a driving part (331) and a driven part (332), the driving part (331) is connected with an output shaft of the second driver (32), a torsion block (333) is connected between the driven part (332) and a base (23), and the base (23) and the driven part (332) are hinged through the torsion block (333); slide rail (34) have been seted up on sliding table (3), base (23) are kept away from the slider is installed to the one end of work piece seat (22), the slider is located in slide rail (34).

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