Driving device for cutter relieving cam shaft of gear shaping machine

Abstract

The utility model belongs to the field of gear shaper equipment, and particularly provides a driving device for a cutter relieving cam shaft of a gear shaper, which comprises a main motor arranged on a rack, the main motor drives a gear box, a first transmission belt pulley is arranged at the output end of the gear box, and a transmission belt is simultaneously sleeved on the first transmission belt pulley and a second transmission belt pulley. The second transmission belt wheel is installed on the sleeve, the sleeve is rotationally installed on the supporting base, the cutter relieving cam shaft is installed in the sleeve and connected with the sleeve through a key, a sliding key groove is formed in the cutter relieving cam shaft, the length of the sliding key groove is larger than that of the key, and a cutter relieving cam is arranged at the end, away from the supporting base, of the cutter relieving cam shaft. The device does not affect the axial displacement of the cutter relieving cam shaft while rotationally driving the cutter relieving cam shaft, and automatic cutter relieving switching of the gear shaping machine is achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a gear shaping machine equipment field, especially a kind of driving device for gear shaping machine let cam shaft. BACKGROUND

[0002] According to the requirement of gear shaping machine machining gear, let tool motion is needed when gear shaping cutter is back, to avoid dulling gear shaping cutter blade and scratching the surface of machined workpiece during back. Generally, gear shaping machine drives tool holder body along certain trajectory by let cam rotation, let cam shaft generally needs servo motor to drive, but single let cam can only drive let tool of inner tooth or outer tooth gear shaping cutter. Because the let tool direction of inner tooth and outer tooth gear shaping is different, different specifications of let cam need to be set, when inner tooth and outer tooth gear shaping switching is needed, corresponding let cam is only needed to be pushed to working position. The existing gear shaping machine realizes the switching of let cam working position by the overall axial displacement of let cam shaft or the axial position displacement of let cam alone. When let cam is moved, the position of let cam can be adjusted manually, but machine operation is needed, and manual adjustment is time-consuming and laborious. When let cam shaft needs to be moved as a whole, additional servo motor is needed to drive let cam shaft rotation, and additional pushing mechanism is needed to adjust the axial position of let cam shaft, which requires high machine system and related motor, and the cost is also high. SUMMARY

[0003] The utility model provides a kind of driving device for gear shaping machine let cam shaft, while the rotation of let cam shaft is driven, the axial displacement of let cam shaft is not affected, and the automatic let tool switching of gear shaping machine is realized.

[0004] To solve the above technical problems, the technical scheme adopted by the utility model is: a kind of driving device for gear shaping machine let cam shaft, including main motor being set on rack, main motor driving gear box, the output end of gear box is equipped with first transmission belt pulley, transmission belt is simultaneously sleeved on first transmission belt pulley and second transmission belt pulley, second transmission belt pulley is installed on sleeve, sleeve is rotatably installed on support seat, let cam shaft is installed in sleeve and is connected by key, let cam shaft is equipped with sliding key groove, the length of sliding key groove is greater than the length of key, and let cam shaft is equipped with let cam away from the end of support seat.

[0005] In the preferred scheme, the rack is equipped with tension belt pulley, and the tension belt pulley is tensioned to the transmission belt.

[0006] In the preferred scheme, the motor shaft of the main motor is equipped with driving belt pulley, the input end of the gear box is equipped with driven belt pulley, and the synchronous belt is simultaneously sleeved on the driving belt pulley and the driven belt pulley.

[0007] In the preferred solution, the support seat comprises two sets of clamping plates, opposite sides of the two sets of clamping plates are provided with annular grooves matched with the sleeve, the sleeve is rotatably installed in the annular grooves through bearings, and the clamping plates are provided with through holes for allowing the knife cam shaft to pass through.

[0008] In the preferred solution, the clamping plates are connected through a pin shaft, the pin shaft is connected with a fixing plate through a support plate, and the fixing plate is fixed on the rack.

[0009] The driving device for the knife cam shaft of the gear shaping machine has the following beneficial effects:

[0010] 1. The main motor drives the second transmission belt pulley to rotate through the gear box, the first transmission belt pulley and the transmission belt, synchronous driving of the sleeve is realized, the sleeve is connected with the knife cam shaft through a key, thereby realizing rotational driving of the knife cam shaft and the knife cam, and the knife cam shaft can move axially along the sleeve, so that the axial displacement of the knife cam shaft is not affected while the knife cam shaft is rotationally driven, and automatic knife switching of the gear shaping machine is realized.

[0011] 2. When the position of the knife cam is changed by moving the knife cam shaft left and right, the machine does not need to be stopped.

[0012] 3. The main motor can be used as the driving motor of the gear shaping cutter, the knife driving of the gear shaping machine shares a set of motors with the gear driving, and a servo motor does not need to be additionally arranged, thereby reducing the requirement on the motor.

[0013] 4. The manual knife switching operation is replaced, and the mechanization degree and convenience are improved. DRAWINGS

[0014] The utility model will be further described in connection with the drawings and examples:

[0015] Figure 1 It is the whole structure schematic view of the utility model;

[0016] Figure 2 It is the plan view of the cam shaft installation;

[0017] Figure 3 It is the installation structure schematic view of the second transmission belt pulley;

[0018] Figure 4 It is Figure 2 It is the structure schematic view of the support seat at A in the middle;

[0019] In the figure: rack 1, main motor 2, gear box 3, first transmission pulley 4, transmission belt 5, second transmission pulley 6, sleeve 7, support base 8, clamping plate 801, annular groove 802, through hole 803, pin shaft 804, support plate 805, fixed plate 806, let-off cam shaft 9, sliding key groove 901, let-off cam 10, tension pulley 11, driving pulley 12, driven pulley 13, synchronous belt 14, let-off switching mechanism 15. DETAILED DESCRIPTION

[0020] Embodiment 1

[0021] As shown in Figures 1-4 , a driving device for let-off cam shaft of gear shaping machine, comprising main motor 2 arranged on rack 1, main motor 2 drives gear box 3, main motor 2 can be gear shaping motor of gear shaping machine, that is, let-off drive and gear shaping drive of gear shaping machine share a set of motor, without setting additional servo motor.

[0022] In this embodiment, driving pulley 12 is arranged on motor shaft of main motor 2, driven pulley 13 is arranged on input end of gear box 3, synchronous belt 14 is simultaneously sleeved on driving pulley 12 and driven pulley 13, through belt transmission, power output of main motor 2 is transmitted to gear box 3.

[0023] First transmission pulley 4 is arranged on output end of gear box 3, transmission belt 5 is simultaneously sleeved on first transmission pulley 4 and second transmission pulley 6, second transmission pulley 6 is installed on sleeve 7, second transmission pulley 6 is connected with sleeve 7 through key, synchronous rotation of second transmission pulley 6 and sleeve 7 is realized. Sleeve 7 is rotatably installed on support base 8 through bearing, let-off cam shaft 9 is installed in sleeve 7 and connected with sleeve 7 through key, sliding key groove 901 is arranged on let-off cam shaft 9, length of sliding key groove 901 is greater than length of key, let-off cam shaft 9 can axially move relative to sleeve 7, let-off cam 10 is arranged on end of let-off cam shaft 9 away from support base 8, let-off cam 10 corresponds to different lift curve segments of inner teeth and outer teeth, through let-off switching mechanism 15, let-off cam shaft 9 is axially moved, axial position of let-off cam 10 is changed, let-off switching is realized, in this embodiment, let-off switching mechanism 15 is hydraulic cylinder, arranged on rack 1.

[0024] Preferably, as Figure 1 and shown in 4, support base 8 comprises two groups of clamping plates 801, opposite sides of two groups of clamping plates 801 are provided with annular grooves 802 matched with sleeve 7, sleeve 7 is rotatably installed in annular grooves 802 through bearing, through holes 803 are arranged on clamping plates 801 for let-off cam shaft 9 to pass through.

[0025] The clamping plate 801 is connected through a pin shaft 804, the pin shaft 804 is connected through a support plate 805 and a fixed plate 806, and the fixed plate 806 is fixed on the rack 1 through bolts.

[0026] The working principle of the device is:

[0027] When the gear shaping machine performs the gear shaping action, the main motor 2 drives the gear box 3 to drive the sleeve 7 to rotate through the transmission of the first transmission belt pulley 4, the transmission belt 5 and the second transmission belt pulley 6, the sleeve 7 is connected with the relieving cam shaft 9 through a key, the relieving cam shaft 9 is driven to rotate, so that the rotation of the relieving cam 10 is driven, the relieving cam 10 pushes the tool holder body to perform the relieving operation along a certain trajectory, and the relieving motion of the gear shaping cutter away from the workpiece during the return stroke is realized. When it is required to switch the internal and external gear shaping, the relieving cam shaft 9 is driven to move axially through the relieving switching mechanism 15, the position of the relieving cam 10 is changed, the lift curve segment corresponding to the relieving cam 10 is moved to the gear shaping cutter position, and the relieving switching is realized. When the relieving cam shaft 9 moves left and right, it is not required to stop.

[0028] The device does not affect the axial displacement of the relieving cam shaft while driving the rotation of the relieving cam shaft, and automatic relieving switching of the gear shaping machine is realized.

[0029] Embodiment 2:

[0030] Different from embodiment 1, the rack 1 is provided with a tension belt pulley 11, and the tension belt pulley 11 is used for tensioning the transmission belt 5. Specifically, the rotating shaft of the tension belt pulley 11 is rotatably installed on a mounting seat, the mounting seat is connected with the rack 1 through bolts, and the tensioning degree of the tension belt pulley 11 can be adjusted by adjusting the mounting position of the mounting seat.

[0031] The above-mentioned embodiments are only preferred technical solutions of the present application, and should not be regarded as limiting the present application. The embodiments in the application and the features in the embodiments can be combined with each other in the case of no conflict. The protection scope of the present application should be the technical solutions recorded in the claims, including the equivalent replacement solutions of the technical features recorded in the claims. That is, the equivalent replacement improvement in this range is also within the protection scope of the present application.

Claims

1. A drive device for a cutter cam shaft of a gear shaping machine, characterized in that: The utility model provides a kind of cutting tool cam mechanism, including the main motor (2) being arranged on rack (1), the main motor (2) drives gear box (3), the output of gear box (3) is equipped with first transmission pulley (4), transmission belt (5) is simultaneously sleeved on first transmission pulley (4) and second transmission pulley (6), second transmission pulley (6) is installed on sleeve (7), sleeve (7) is rotatably installed on support seat (8), let knife camshaft (9) is installed in sleeve (7) and is connected with sleeve (7) by key, let knife camshaft (9) is equipped with sliding key groove (901) on it, the length of sliding key groove (901) is greater than the length of key, let knife camshaft (9) is equipped with let knife cam (10) on the end portion away from support seat (8).

2. A drive device for a cutter cam shaft of a gear shaping machine according to claim 1, characterized in that: The rack (1) is equipped with the tension pulley (11), and the tension pulley (11) tightens the transmission belt (5).

3. A drive arrangement for a cutter cam shaft of a gear shaping machine according to claim 1, characterized in that: The motor shaft of the main motor (2) is equipped with the driving pulley (12), the input end of the gear box (3) is equipped with the driven pulley (13), and the synchronous belt (14) is simultaneously sleeved on the driving pulley (12) and the driven pulley (13).

4. A drive arrangement for a cutter cam shaft of a gear shaping machine according to claim 1, characterized in that: The support seat (8) includes two groups of clamping plates (801), and the opposite sides of the two groups of clamping plates (801) are equipped with annular grooves (802) matched with the sleeve (7). The sleeve (7) is rotatably installed in the annular grooves (802) through bearings. The clamping plates (801) are equipped with through holes (803) for the let knife camshaft (9) to pass through.

5. A drive arrangement for a cutter cam shaft of a gear shaping machine according to claim 4, characterized in that: The clamping plates (801) are connected by the pin shaft (804), the pin shaft (804) is connected with the fixed plate (806) through the support plate (805), and the fixed plate (806) is fixed on the rack (1).

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