Polishing device for gear of speed reducer

Abstract

The utility model relates to a speed reducer gear polishing device which comprises a machining table, a linear reciprocating mechanism and a polishing mechanism, wherein the linear reciprocating mechanism and the polishing mechanism are arranged on the machining table. A gear mounting frame is arranged at the movable end of the linear reciprocating mechanism, a movable shaft used for mounting a gear is arranged on the gear mounting frame, and a transmission mechanism in transmission connection with the movable shaft is further arranged on one side of the gear mounting frame; the transmission mechanism comprises a ratchet wheel, a driving pawl, a driven pawl and a pair of cone pulleys, the cone pulleys are connected with the movable shaft and the ratchet wheel, the driving pawl and the driven pawl are arranged at the two ends of the ratchet wheel respectively, the rear end of the driving pawl is hinged to a vertical rod, and the lower end of the vertical rod is hinged to the gear mounting frame through a short shaft; by means of the device, tooth groove grinding can be automatically conducted, tooth groove grinding can be automatically switched through rotation of the gear, the grinding efficiency is improved, the grinding precision is uniform, and the transmission precision of the gear can be greatly improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a speed reducer gear machining technical field especially relates to a speed reducer gear polishing device. BACKGROUND

[0002] Speed reducer is a kind of independent component by the gear transmission, worm transmission, gear-worm transmission closed in rigid shell, commonly used as the speed reducer between prime mover and working machine, it is widely used in modern machinery. Speed reducer performance directly depends on its internal gear precision and quality, and gear tooth profile precision, surface finish and the machining quality of tooth part are the key factors to affect the transmission efficiency, noise and service life of speed reducer.

[0003] In the production and processing of speed reducer gear, the surface is usually polished to remove burrs, improve surface finish and ensure the tooth profile precision. However, the gear polishing equipment in the prior art is mostly limited to polishing the two bottom surfaces of the gear, and the polishing of the tooth part usually depends on manual operation or simple mechanical device, which leads to low processing efficiency and inconsistent precision. UTILITY MODEL CONTENT

[0004] In order to overcome the shortcomings of the prior art, the technical problem of the utility model is to provide a speed reducer gear polishing device, which can efficiently and accurately polish the tooth part of the gear, thereby improving the transmission precision of the gear.

[0005] Technical scheme: a speed reducer gear polishing device, comprising a machining table, a linear reciprocating mechanism and a polishing mechanism arranged on the machining table; the movable end of the linear reciprocating mechanism is provided with a gear mounting rack, the gear mounting rack is provided with a movable shaft for mounting the gear, and one side of the gear mounting rack is further provided with a transmission mechanism in transmission connection with the movable shaft; the transmission mechanism comprises a ratchet wheel, a driving pawl, a driven pawl and a pair of bevel gears, the bevel gears are connected with the movable shaft and the ratchet wheel, the driving pawl and the driven pawl are arranged at both ends of the ratchet wheel respectively, wherein the rear end of the driving pawl is hinged to a vertical rod, the lower end of the vertical rod is hinged to the gear mounting rack through a short shaft, a torsion spring is arranged on the short shaft, the torsion spring connects the short shaft and the vertical rod, the rear end of the driven pawl is hinged to the gear mounting rack, one leaf spring is arranged on the side of the driving pawl and the driven pawl away from the ratchet wheel respectively, and a touch lever is arranged on the machining table, the touch lever is located on the running path of the vertical rod.

[0006] Furthermore, it is particularly preferred that the gear mounting frame comprises a concave support portion and a longitudinal adjustment portion, the longitudinal adjustment portion is arranged at the bottom of the concave support portion, and the longitudinal adjustment portion comprises two parallel sliding rails arranged at the movable end of the linear reciprocating mechanism, a lead screw arranged between the two sliding rails, and a nut arranged on the lead screw, the nut is connected with the concave support portion, and one end of the lead screw is provided with a rotating handle.

[0007] Furthermore, it is particularly preferred that the movable shaft comprises left and right end shafts and a middle detachable shaft, the left and right end shafts are respectively arranged in rotation on two vertical edges of the concave support portion, one end of each of the left and right end shafts is formed with a key groove, and the middle detachable shaft is formed with end keys at two ends, and the two end keys of the middle detachable shaft are inserted into the key grooves and matched with the key grooves.

[0008] Furthermore, it is particularly preferred that the polishing mechanism comprises a fixed column arranged on the machining table, a machine box arranged on the fixed column, a cutter bar and a motor arranged on the machine box, one end of the cutter bar is connected with a cutter head, the other end of the cutter bar is connected with the motor, and a height adjustment mechanism is arranged between the machine box and the fixed column.

[0009] Furthermore, it is particularly preferred that the touch rod comprises a fixed vertical rod arranged vertically on the machining table and an adjusting rod arranged horizontally at the upper end of the fixed vertical rod, the upper end of the fixed vertical rod is provided with a horizontal insertion hole matched with the adjusting rod, a screw hole communicated with the insertion hole is arranged on the fixed vertical rod, and an adjusting screw rod is arranged in the screw hole.

[0010] Furthermore, it is particularly preferred that the cooling component comprises a cooling liquid supply end and a cooling liquid output pipe, the rear end of the cooling liquid output pipe is connected to the cooling liquid supply end, and the front end of the cooling liquid output pipe outputs cooling liquid towards the cutter head.

[0011] Furthermore, it is particularly preferred that the upper end surface of the machining table is provided with a sunken groove, the linear reciprocating mechanism is arranged in the sunken groove, the bottom surface of the sunken groove is arranged in a front-high rear-low mode, and a drain hole communicated with the outside is arranged at the rear end of the sunken groove.

[0012] The utility model discloses the beneficial effects are as follows:

[0013] Through the reciprocating motion of the linear reciprocating mechanism, the gear mounting frame carrying the gear is driven to move synchronously, when passing through the polishing mechanism, the gear groove of the gear moves relative to the polishing mechanism to perform polishing work, in addition, through the triggering of the transmission mechanism during the movement, the intermittent rotation of the movable shaft is realized, and then the rotation of the gear is driven to complete the switching of the gear groove.

[0014] Using the device can not only automatically polish the gear groove, but also automatically switch the polishing gear groove through the rotation of the gear, so that the polishing efficiency is improved, the polishing precision is uniform, and the transmission precision of the gear is greatly improved. DRAWINGS

[0015] Figure 1 It is a three-dimensional structure schematic view of the utility model.

[0016] Figure 2 It is a three-dimensional structure schematic view of the utility model transmission mechanism.

[0017] Figure 3 It is a structure schematic view of the utility model vertical rod, short shaft and torsion spring.

[0018] Figure 4 It is a three-dimensional structure schematic view of the utility model polishing mechanism.

[0019] Figure 5 It is a three-dimensional structure schematic view of the utility model gear mounting frame and movable shaft.

[0020] Figure 6 It is a local partial structure schematic view of the utility model movable shaft.

[0021] Among them, the above drawing includes the following figure marks: 1, processing table, 11, sink groove, 12, drain hole, 2, straight reciprocating mechanism, 3, polishing mechanism, 31, fixed column, 32, machine case, 33, 33', cutter bar, 34, 34', cutter head, 35, motor, 36, height adjusting mechanism, 4, gear mounting frame, 41, concave support part, 42, longitudinal adjusting part, 43, slide rail, 44, screw rod, 45, nut, 46, rotating handle, 5, movable shaft, 51, left and right end shaft, 52, middle detachable shaft, 53, keyway, 54, end key, 55, rubber pad, 6, transmission mechanism, 61, ratchet wheel, 62, driving pawl, 63, driven pawl, 64, bevel gear, 65, vertical rod, 66, short shaft, 67, torsion spring, 68, leaf spring, 7, touch rod, 71, fixed vertical rod, 72, adjusting rod, 73, insertion hole, 74, screw hole, 75, adjusting screw rod, 8, cooling liquid output pipe. DETAILED DESCRIPTION

[0022] The technical scheme in the embodiments of the utility model will be apparently and completely described in combination with the drawings in the embodiments of the utility model, and obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without making creative efforts fall within the protection scope of the utility model.

[0023] As Figures 1-6The shown speed reducer gear polishing device comprises a machining table 1, a linear reciprocating mechanism 2 and a polishing mechanism 3 are arranged on the machining table 1, wherein a movable end of the linear reciprocating mechanism 2 is provided with a gear mounting rack 4, the gear mounting rack 4 is provided with a movable shaft 5 for mounting a gear, a transmission mechanism 6 is further arranged on one side of the gear mounting rack 4 and is in transmission connection with the movable shaft 5, the linear reciprocating mechanism 2 is used for driving the gear to be machined to move, and the gear groove of the gear is in contact with the polishing mechanism 3 during the movement, so that the polishing of the gear groove is realized.

[0024] The transmission mechanism 6 is used for driving the movable shaft 5 to rotate intermittently, and further realizes the gear groove switching of the gear, and specific reference can be made to Figure 2 and Figure 3 The transmission mechanism 6 comprises a ratchet wheel 61, a driving pawl 62, a driven pawl 63 and a pair of bevel gears 64, one of the bevel gears 64 is fixedly connected with the rotating shaft of the ratchet wheel 61, the other bevel gear 64 is fixedly connected with the movable shaft 5, the two bevel gears 64 are in meshing, the transmission cooperation of the ratchet wheel 61 and the movable shaft 5 is realized, the rotating shaft of the ratchet wheel 61 is rotatably arranged on the gear mounting rack 4, the driving pawl 62 and the driven pawl 63 are arranged at two ends of the ratchet wheel 61 respectively, the front ends of the driving pawl 62 and the driven pawl 63 are abutted in the gear groove of the ratchet wheel 61, in addition, the rear end of the driving pawl 62 is hinged on a vertical rod 65, the lower end of the vertical rod 65 is hinged on the gear mounting rack 4 through a short shaft 66, a torsion spring 67 is further arranged on the short shaft 66, the torsion spring 67 connects the short shaft 66 and the vertical rod 65, specifically, one end of the torsion spring 67 is connected on the short shaft 66, and the other end is connected on the vertical rod 65, the rear end of the driven pawl 63 is hinged on the gear mounting rack 4, a leaf spring 68 is arranged on the side away from the ratchet wheel 61 of the driving pawl 62 and the driven pawl 63 respectively, the leaf spring 68 respectively applies a pressure towards the ratchet wheel 61 to the driving pawl 62 and the driven pawl 63, so that the driving pawl 62 and the driven pawl 63 always tend to abut in the gear groove of the ratchet wheel 61. With the short shaft 66 as the center, the vertical rod 65 is rotated by a certain angle, at this time, the driving pawl 62 drives the ratchet wheel 61 to rotate, and the torsion spring 67 is energized, after the vertical rod 65 is released, the torsion spring 67 releases the stored energy to drive the vertical rod 65 to reset, and the two pawls continue to abut in the gear groove of the ratchet wheel 61 to lock the ratchet wheel 61, and the above steps are repeated, so that the intermittent rotation of the ratchet wheel 61 is realized, and then the movable shaft 5 is also intermittently rotated through the transmission of the bevel gear 64, so that the switching of the gear groove is realized.

[0025] In addition, it should be noted that the transmission mechanism 6 further comprises a touch rod 7 arranged on the machining table 1, and the touch rod 7 is located on the running path of the vertical rod 65. With the linear reciprocating mechanism 2 driving the gear mounting frame 4 to reciprocate, the vertical rod 65 will approach and move away from the touch rod 7 once in each reciprocating cycle; when approaching the touch rod 7, the vertical rod 65 interferes with the touch rod 7, causing the vertical rod 65 to rotate a certain angle around the short shaft 66. When the vertical rod 65 moves away from the touch rod 7, the vertical rod 65 is reset through the action of the torsional spring 67, so that the machining gear slot can be automatically switched in one reciprocating cycle.

[0026] In a specific embodiment, the touch rod 7 comprises a fixed vertical rod 71 vertically arranged on the machining table 1 and an adjusting rod 72 horizontally arranged on the upper end of the fixed vertical rod 71, the upper end of the fixed vertical rod 71 is provided with a horizontal insertion hole 73 matched with the adjusting rod 72, and a screw hole 74 communicating with the insertion hole 73 is arranged, and an adjusting screw 75 is arranged in the screw hole 74. Through the above-mentioned structure of the touch rod 7, the distance between the adjusting rod 72 and the vertical rod 65 can be adjusted, so as to change the interference distance between them, so that the rotation angle of the vertical rod 65 each time can be adjusted. The larger the rotation angle, the larger the rotation angle of the ratchet wheel 61, so that the rotation angle of the gear will also increase, and vice versa. In actual use, the rotation angle of the gear is adjusted according to the number of teeth of the gear to be machined. In addition, it should be noted that the rotation angle of the gear needs to be adjusted before the gears of the same batch are machined, and the rotation angle is adjusted to switch to the next gear slot only.

[0027] In a specific embodiment, the linear reciprocating mechanism 2 preferably uses a screw reciprocating platform, and the driving motor preferably uses a waterproof motor.

[0028] In a preferred embodiment, as shown in Figure 5 the gear mounting frame 4 comprises a concave support part 41 and a longitudinal adjusting part 42, wherein the longitudinal adjusting part 42 is arranged at the bottom of the concave support part 41, and the longitudinal adjusting part 42 comprises two parallel sliding rails 43 arranged on the movable end (i.e. the movable platform) of the linear reciprocating mechanism 2, a lead screw 44 arranged between the two sliding rails 43, and a nut 45 arranged on the lead screw, the two ends of the lead screw 44 are arranged on the movable end of the linear reciprocating mechanism 2 through shaft supports, the nut 45 is connected with the concave support part 41, and one end of the lead screw 44 is provided with a rotating handle 46, so that the position of the concave support part 41 can be adjusted in the longitudinal direction by rotating the handle 46. Figure 1 It can be seen that the distance between the concave support part 41 and the polishing mechanism 3 can be adjusted through the longitudinal adjusting part 42, and the distance between the gear and the tool bit 34, 34' can be adjusted when machining gears of different sizes.

[0029] In a preferred embodiment, as shown in Figure 6As shown, the movable shaft 5 specifically includes left and right end shafts 51 and a middle detachable shaft 52. The left and right end shafts 51 are respectively arranged in rotation on two vertical edges of the concave support part 41, and the end of the left and right end shafts 51 close to each other is respectively formed with a key groove 53. The middle detachable shaft 52 is formed with end keys 54 at both ends, and the end keys 54 at both ends of the middle detachable shaft 52 are inserted into the key grooves 53 to cooperate with the key grooves 53. In addition, the end keys 54 and the key grooves 53 are respectively formed with through holes, and the through holes are connected to insert a pin shaft to connect them. In use, the pin is pulled out, the middle detachable shaft 52 is removed, the gear to be machined is installed on the middle detachable shaft 52, and then it is installed back. In a preferred embodiment, the middle detachable shaft 52 is further provided with rubber pads 55. By arranging a plurality of rubber pads 55 cooperating with the middle detachable shaft 52, the gears installed thereon can be fixed, thereby adapting to gears of different sizes. In addition, a plurality of gears can be installed on the same middle detachable shaft 52 and fixed by rubber pads 55.

[0030] Furthermore, the installation of gears can be realized by using middle detachable shafts 52 of different diameters or using middle detachable shafts 52 with threads and nuts as an alternative to the above-mentioned scheme, so that the gears can be pre-assembled on the middle detachable shafts 52 before machining.

[0031] In addition, it should be noted that a plurality of movable shafts 5 can be assembled on the gear mounting frame 4, and the plurality of movable shafts 5 are connected by gear or belt transmission. The gears are assembled on each movable shaft 5, and the gears need to be ensured not to interfere with each other. In the embodiment, two movable shafts 5 are provided, and the two movable shafts 5 are connected by a belt pulley. The polishing mechanism 3 matched with the two movable shafts 5 is also provided with two tool heads 34, 34', and the polishing of the two groups of gears is correspondingly realized.

[0032] Specifically, referring to Figure 4 , the polishing mechanism 3 includes a fixed column 31 arranged on the machining table 1, a machine box 32 arranged on the fixed column 31, tool bars 33, 33' and a motor 35 arranged on the machine box 32, and the tool bars 33, 33' are connected with the tool heads 34, 34' at one end and connected with the motor 35 at the other end. A height adjusting mechanism 36 is arranged between the machine box 32 and the fixed column 31. In the embodiment, the tool bar 33 is vertically arranged, and the tool bar 33' is horizontally arranged. The two are connected by a pair of bevel gears, and the upper end of the tool bar 33 is connected with the motor 35. The height adjusting mechanism 36 is used to adjust the height of the tool heads 34, 34', and the structure thereof is basically the same as that of the longitudinal adjusting part 42, only the direction is different. Here, it is not repeated. The height adjusting mechanism 36 cooperates with the longitudinal adjusting part 42 to adapt to the machining of gears of various sizes. The device is more adaptable and has a wider range of applications.

[0033] Referring to Figure 1 andFigure 4 In a preferred embodiment, the device further comprises a cooling component, which comprises a cooling liquid supply end (not shown in the figure) and a cooling liquid output pipe 8, the rear end of which is connected to the cooling liquid supply end, and the front end of which outputs cooling liquid towards the tool head 34, 34'. By providing the cooling component, the tool head 34, 34' can be cooled. Correspondingly, a sunken groove 11 is provided on the upper end face of the machining table 1, and the linear reciprocating mechanism 2 is installed in the sunken groove 11. The bottom surface of the sunken groove 11 is arranged in a manner that the front end is higher and the rear end is lower, and a drain hole 12 that is connected to the outside is provided at the rear end of the sunken groove 11. The cooling liquid is discharged through the drain hole 12 of the sunken groove 11, which can not only be recycled, but also can avoid the liquid from splashing into the working environment and causing danger.

[0034] The above-described embodiments only express the preferred embodiments of the present application, and the description is relatively specific and detailed, but it should not be understood as a limitation on the scope of the patent of the present application. It should be noted that for ordinary skilled persons in the art, without departing from the concept of the present application, a number of modifications, improvements and substitutions can be made, which all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application should be subject to the appended claims.

Claims

1. A gear grinding device for a speed reducer, characterized in that, It includes a processing table (1) and a linear reciprocating mechanism (2) and a grinding mechanism (3) mounted on the processing table (1); The movable end of the linear reciprocating mechanism (2) is provided with a gear mounting bracket (4), and the gear mounting bracket (4) is provided with a movable shaft (5) for mounting gears. A transmission mechanism (6) that is connected to the movable shaft (5) is also provided on one side of the gear mounting bracket (4). The transmission mechanism (6) includes a ratchet (61), a driving pawl (62), a driven pawl (63), and a pair of conical wheels (64). The conical wheels (64) connect the movable shaft (5) and the ratchet (61). The driving pawl (62) and the driven pawl (63) are respectively located at both ends of the ratchet (61). The rear end of the driving pawl (62) is hinged to a vertical rod (65), and the lower end of the vertical rod (65) is hinged to the gear mounting bracket (4) via a short shaft (66). On the short shaft (66), a torsion spring (67) is provided. The torsion spring (67) connects the short shaft (66) and the vertical rod (65). The rear end of the driven pawl (63) is hinged to the gear mounting bracket (4). The active pawl (62) and the driven pawl (63) are respectively provided with a leaf spring (68) on the side facing away from the ratchet (61). The transmission mechanism (6) also includes a contact rod (7) provided on the processing table (1). The contact rod (7) is located on the running path of the vertical rod (65).

2. The gear grinding device for a speed reducer as described in claim 1, characterized in that, The gear mounting bracket (4) includes a concave support part (41) and a longitudinal adjustment part (42). The longitudinal adjustment part (42) is located at the bottom of the concave support part (41). It includes two parallel slide rails (43) located at the movable end of the linear reciprocating mechanism (2), a lead screw (44) located between the two slide rails (43), and a nut (45) located on the lead screw. The nut (45) is connected to the concave support part (41). One end of the lead screw (44) is provided with a rotating handle (46).

3. The gear grinding device for a speed reducer as described in claim 2, characterized in that, The movable shaft (5) includes left and right end shafts (51) and a middle disassembly shaft (52). The left and right end shafts (51) are respectively rotatably mounted on the two vertical edges of the concave support part (41). The ends of the left and right end shafts (51) that are close to each other are respectively formed with keyways (53). The two ends of the middle disassembly shaft (52) are formed with end keys (54). The two end keys (54) of the middle disassembly shaft (52) are respectively inserted into the keyways (53) to cooperate with them.

4. The gear grinding device for a speed reducer as described in claim 1, characterized in that, The grinding mechanism (3) includes a fixed column (31) set on the processing table (1), a machine housing (32) is provided on the fixed column (31), and a tool bar (33, 33') and a motor (35) are provided on the machine housing (32). One end of the tool bar (33, 33') is connected to the tool head (34, 34'), and the other end is connected to the motor (35). A height adjustment mechanism (36) is provided between the machine housing (32) and the fixed column (31).

5. The gear grinding device for a speed reducer as described in claim 1, characterized in that, The contact rod (7) includes a fixed upright (71) vertically mounted on the processing table (1) and an adjusting rod (72) horizontally mounted on the upper end of the fixed upright (71). The upper end of the fixed upright (71) is provided with a horizontal insertion hole (73) adapted to the adjusting rod (72) and a screw hole (74) communicating with the insertion hole (73). An adjusting screw (75) is provided in the screw hole (74).

6. The gear grinding device for a speed reducer as described in claim 4, characterized in that, It also includes a cooling component, which includes a coolant supply end and a coolant output pipe (8). The rear end of the coolant output pipe (8) is connected to the coolant supply end, and the front end outputs coolant towards the cutter head (34, 34').

7. The gear grinding device for a speed reducer as described in claim 6, characterized in that, The upper surface of the processing table (1) is provided with a sinking groove (11), and the linear reciprocating mechanism (2) is installed in the sinking groove (11). The bottom surface of the sinking groove (11) is set with the front higher than the back, and the rear end of the sinking groove (11) is provided with a drainage hole (12) that connects to the outside.

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