A shifting lever driving device for shaft gear parts

Abstract

The present invention relates to the technical field of machining of shaft gear parts, and in particular to a dial rod driving device for shaft gear parts. The device realizes the tightening and positioning of both ends of the shaft gear parts through the setting of a tightening mechanism and a driving and separating combination mechanism; realizes the precise positioning and clamping of the shaft gear parts through the setting of a tooth searching mechanism; and realizes the driving and rotation of the clamped shaft gear parts through the setting of a driving mechanism. Through the coordinated setting of a control system, precise control of the positioning, tightening and driving rotation of the shaft gear parts is achieved. The device takes into account both the positioning accuracy and the degree of automation, has a more reliable positioning, a more stable positioning structure, is simple and easy to operate in positioning and clamping, has a high clamping efficiency, and can be applied to the automation transformation of production lines. It solves the problems of low positioning accuracy and high clamping difficulty of shaft gear parts in the prior art.

Description

Technical Field

[0001] The present invention relates to the technical field of machining of shaft gear parts, and particularly to a lever driving device for shaft gear parts. Background Art

[0002] At present, when machining shaft gear parts, end face driving or manual lever driving is usually adopted. Since the positioning and driving are integrated in the end face driving, the positioning mechanism must elastically expand and contract, resulting in loss of positioning accuracy and cannot be used for high-precision grinding. The manual lever driving method has high positioning accuracy, but the clamping automation degree is very low, requiring a large amount of manual intervention, with high clamping difficulty and low clamping efficiency.

[0003] Therefore, there is an urgent need for a lever driving device with high positioning accuracy and convenient clamping. Summary of the Invention

[0004] In view of the problems of low positioning accuracy and high clamping difficulty of shaft gear parts in the prior art, the present invention provides a lever driving device for shaft gear parts.

[0005] To achieve the above object, the present invention adopts the following technical solutions:

[0006] The present invention provides a lever driving device for shaft gear parts, including a driving mechanism, a driving separation and engagement mechanism, a tooth searching mechanism, a tightening mechanism and a control system arranged on the same horizontal plane; the driving mechanism, the tooth searching mechanism and the tightening mechanism are all connected to the control system;

[0007] The control system is used to control the driving mechanism, the tooth searching mechanism and the tightening mechanism to position, tighten and drive the rotation of the shaft gear parts;

[0008] The tightening mechanism is used to cooperate with the driving separation and engagement mechanism to tightly position the shaft gear parts;

[0009] The driving separation and engagement mechanism is used to clamp the shaft gear parts and drive the shaft gear parts to rotate;

[0010] The driving mechanism is connected to the driving separation mechanism and is used to drive the driving separation mechanism to drive the shaft gear parts to rotate;

[0011] The tooth searching mechanism is arranged between the tightening mechanism and the driving separation mechanism and is used to identify the tooth top and tooth groove positions of the shaft gear parts and determine the clamping position of the shaft gear parts.

[0012] Preferably, the driving mechanism includes a servo motor and a coupling, one end of the coupling is connected to the output end of the servo motor, and the other end of the coupling is connected to the driving separation and engagement mechanism.

[0013] Preferably, a reducer is further provided between the servo motor and the coupling.

[0014] Preferably, the driving separation and combination mechanism comprises a Morse shaft, a coupler, a push plate, a positioning center, a cylinder and a base;

[0015] The Morse shaft passes through the base in the horizontal direction and is rotatably connected to the base; the input end of the Morse shaft is connected to the driving mechanism, and the output end of the Morse shaft is connected to the positioning top; the positioning top is provided with a first dial head in the radial direction;

[0016] The coupler is rotatably sleeved on the outside of the positioning top and is axially slidably connected with the positioning top; a plurality of driving rods are arranged on the coupler, and a driving head is arranged on the driving rod, and the driving head is clamped between the teeth of the shaft gear parts; a second dial head is arranged on the end surface of the coupler, and the second dial head cooperates with the first dial head to make the coupler and the Morse shaft rotate synchronously; a limiting groove is arranged on the circumferential direction of the coupler;

[0017] One end of the push plate abuts against the inner groove of the limit groove, and the other end is connected to the top end of the piston rod of the cylinder;

[0018] The cylinder is electrically connected or communicatively connected to the control system.

[0019] Preferably, an oil-free bushing is provided between the coupler and the positioning top, and the oil-free bushing is made of copper alloy and is inlaid with graphite on the outside.

[0020] Preferably, a limiting hole is arranged on the end surface of the base; and a limiting block is arranged on the coupler corresponding to the limiting hole, for cooperating with the limiting hole to limit the coupler.

[0021] Preferably, an angular contact bearing is provided between the Morse shaft and the base.

[0022] Preferably, the gear-finding mechanism comprises a fixed base and a proximity switch; the fixed base is slidably arranged on the planes on both sides of the shaft gear parts; the proximity switch is arranged on the fixed base, and the proximity switch is electrically connected or communicatively connected to the control system.

[0023] Preferably, the clamping mechanism comprises a pneumatic tailstock, and a movable center is provided at the end of the pneumatic tailstock close to the shaft gear part, and the pneumatic tailstock is electrically connected or communicatively connected to the control system.

[0024] Preferably, the shaft and gear part lever driving device further comprises a supporting mechanism, wherein the supporting mechanism is arranged between the tightening mechanism and the driving and separating mechanism, and is used for supporting the shaft and gear part.

[0025] Compared with the prior art, the present invention has the following beneficial effects:

[0026] A driving device for shaft gear parts of the present invention includes a driving mechanism, a driving separation and engagement mechanism, a tooth searching mechanism, a pressing mechanism and a control system; through the settings of the pressing mechanism and the driving separation and engagement mechanism, the two ends of the shaft gear parts are tightly positioned, so that the driving force applied to the shaft gear parts is the static friction force of the pressing mechanism and the driving separation and engagement mechanism on the two ends of the shaft gear parts. Since it is driven by static friction, the processed shaft gear parts do not bear circumferential force, thus improving the machining accuracy; through the setting of the tooth searching mechanism, the tooth grooves and tooth tops of the clamped shaft gear parts are distinguished, so as to realize the accurate positioning and clamping of the clamped shaft gear parts; and through the setting of the driving mechanism, the clamped shaft gear parts are driven to rotate; through the coordinated setting of the control system, the accurate control of the positioning, pressing and driving rotation of the shaft gear parts is realized, reducing manual participation, accurate positioning, high automation degree, low clamping difficulty and high clamping efficiency. This device takes into account both the positioning accuracy and the automation degree. Compared with the end face drive, the positioning is more reliable and the positioning structure is more stable. Compared with the lever drive mode, this device can realize automatic clamping, reduce labor intensity, and is applicable to the automation transformation of production lines.

[0027] Further, in the driving mechanism, the driving force is output by a servo motor and transmitted to the separation and engagement mechanism through a coupling. Among them, the setting of the speed reducer can reduce the speed and increase the torque of the servo motor, and improve the service life of the servo motor.

[0028] Further, the driving separation mechanism obtains the driving force from the driving mechanism through a Morse shaft, and through the coordinated settings of a coupling, a push plate, a positioning center, a cylinder and a base, the positioning, clamping and driving rotation of the shaft gear parts are realized.

[0029] Further, the material of the oil-free bushing is copper alloy, and graphite is inlaid on the outside, so that the rotation between the coupling and the Morse shaft is smoother, reducing the damage caused by the friction between the two and extending the service life of the device.

[0030] Further, a limiting hole is provided on the end face of the base; a limiting block corresponding to the limiting hole is provided on the coupling, which is used to cooperate with the limiting hole to limit the coupling.

[0031] Further, the setting of the angular contact bearing can reduce the friction between the Morse shaft and the base, improve the rotation flexibility of the device and reduce the maintenance cost of the device.

[0032] Further, the fixed base of the tooth searching mechanism is slidably arranged on the horizontal planes on both sides of the shaft gear parts, which can be suitable for the accurate positioning of shaft gear parts of different specifications, improve the versatility of the device, and realize the identification of the tooth grooves and tooth tops of the shaft gear parts through proximity switches, improving the positioning accuracy.

[0033] Furthermore, the provision of the support mechanism further enhances the stability of positioning and clamping of shaft and gear parts, improving the machining accuracy of the parts. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 It is a schematic diagram of a driving device for shaft and gear parts of the present invention.

[0035] Figure 2 It is a schematic structural diagram of the driving mechanism of the present invention.

[0036] Figure 3 It is a sectional view of the structure of the driving separation and combination mechanism of the present invention.

[0037] Figure 4 It is a partial structural view of the structure of the driving separation and combination mechanism of the present invention.

[0038] Figure 5 It is a structural diagram of the tooth searching mechanism of the present invention.

[0039] Figure 6 It is a structural diagram of the top pressing mechanism of the present invention.

[0040] Figure 7 It is a structural diagram of the support mechanism of the present invention.

[0041] Among them, 1 - driving mechanism, 2 - driving separation and combination mechanism, 3 - tooth searching mechanism, 4 - top pressing mechanism, 5 - support mechanism, 6 - shaft and gear parts, 101 - servo motor, 102 - coupling, 103 - reducer, 201 - Morse shaft, 202 - adapter, 203 - push plate, 204 - positioning center, 205 - cylinder, 206 - oil-free bushing, 207 - driving rod, 208 - driving head, 209 - base, 210 - limit block, 211 - angular contact bearing, 212 - first dial head, 213 - second dial head, 214 - limit groove, 215 - limit base, 301 - fixed base, 302 - proximity switch, 401 - pneumatic tailstock, 402 - movable center, 501 - support base, 502 - V-shaped support. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0042] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Apparently, the described embodiments are some, but not all, of the embodiments of the present invention. Usually, the components of the embodiments of the present invention described and illustrated herein can be arranged and designed in various different configurations.

[0043] Accordingly, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts fall within the scope of protection of the present invention.

[0044] It should be noted that like reference numerals and letters denote like items in the following drawings. Therefore, once an item is defined in one drawing, it does not require further definition and explanation in subsequent drawings.

[0045] In the description of the embodiments of the present invention, it should be noted that if terms such as "upper", "lower", "horizontal", "inner", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the inventive product is usually placed during use, it is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention. In addition, terms such as "first", "second", etc. are only used for distinguishing descriptions and cannot be construed as indicating or implying relative importance.

[0046] In addition, if the term "horizontal" appears, it does not mean that the component is required to be absolutely horizontal, but it can be slightly inclined. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but it can be slightly inclined.

[0047] In the description of the embodiments of the present invention, it should also be noted that unless otherwise clearly specified and limited, if terms such as "set", "installed", "connected", "connected" are understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0048] The following further detailed description of the present invention is made in conjunction with specific embodiments, which is an explanation rather than a limitation of the present invention.

[0049] See Figure 1 , the present invention discloses a shift lever driving device for shaft gear parts, including a driving mechanism 1, a driving separation and engagement mechanism 2, a tooth searching mechanism 3, a tightening mechanism 4 and a control system arranged on the same horizontal plane; the driving mechanism 1, the tooth searching mechanism 3 and the tightening mechanism 4 are all connected to the control system;

[0050] The control system is used to control the driving mechanism 1, the tooth searching mechanism 3, and the pressing mechanism 4 to position, press, and drive the rotation of the shaft gear parts 6.

[0051] See Figure 2 , the driving mechanism 1 is connected to the driving separation mechanism 2 and is used to drive the driving separation mechanism 2 to drive the shaft gear parts 6 to rotate. The driving mechanism 1 includes a servo motor 101, a speed reducer 103, and a coupling 102. One end of the coupling 102 is sequentially connected to the output ends of the speed reducer 103 and the servo motor 101, and the other end of the coupling 102 is connected to the driving separation and engagement mechanism 2.

[0052] See Figure 3 and Figure 4 , the driving separation and engagement mechanism 2 is used to clamp the shaft gear parts 6 and drive the shaft gear parts 6 to rotate. The driving separation and engagement mechanism 2 includes a Morse shaft 201, a clutch 202, a push plate 203, a positioning center 204, a cylinder 205, a base 209, and angular contact bearings 211.

[0053] The Morse shaft 201 passes through the base 209 in the horizontal direction and is rotatably connected to the base 209. The input end of the Morse shaft 201 is connected to the coupling 102 of the driving mechanism 1, and the output end of the Morse shaft 201 is connected to the positioning center 204. The positioning center 204 is provided with a first driving head 212 in the radial direction.

[0054] The end face of the base 209 is provided with a limiting hole and a limiting base 215, and the limiting base 215 is provided with a positioning through hole for positioning the clutch 202.

[0055] The clutch 202 is rotatably sleeved outside the positioning center 204. An oil-free bushing 206 is further arranged between the clutch 202 and the positioning center 204. The material of the oil-free bushing 206 is copper alloy, and graphite is inlaid on the outside. The clutch 202 and the positioning center 204 are slidably connected along the axial direction. The clutch 202 is provided with a limiting block 210 corresponding to the limiting hole for cooperating with the limiting hole to limit the clutch 202. The clutch 204 is provided with a plurality of driving rods 207, and the driving rods 207 are provided with driving heads 208, and the driving heads 208 are stuck between the teeth of the shaft gear parts 6. The end face of the clutch 202 is provided with a second driving head 213, and the second driving head 213 cooperates with and abuts against the first driving head 212 to make the clutch 202 rotate synchronously with the Morse shaft 201. The clutch 202 is provided with a limiting groove 214 along the circumferential direction.

[0056] One end of the push plate 203 abuts against the inner groove of the limiting groove 214, and the other end is connected to the top end of the piston rod of the cylinder 205.

[0057] The cylinder 205 is electrically connected or communicatively connected to the control system.

[0058] The angular contact bearing 211 is arranged between the Morse shaft 201 and the base 209, and is used to reduce the frictional force between the Morse shaft 201 and the base 209.

[0059] See Figure 5 , the tooth searching mechanism 3 is arranged between the clamping mechanism 4 and the driving and separating mechanism 2, and is used to identify the tooth top and tooth groove positions of the shaft tooth part 6 and determine the clamping position of the shaft tooth part 6; the tooth searching mechanism 3 includes a fixed base 301 and a proximity switch 302; the fixed base 301 is slidably arranged on the planes on both sides of the shaft tooth part 6; the proximity switch 302 is arranged on the fixed base 301, and the proximity switch 302 is electrically connected or communicatively connected to the control system.

[0060] See Figure 6 , the clamping mechanism 4 is used to cooperate with the driving and separating and combining mechanism 2 to clamp and position the shaft tooth part 6, and includes a pneumatic tailstock 401. An active center 402 is arranged at the end of the pneumatic tailstock 401 close to the shaft tooth part 6, and the pneumatic tailstock 41 is electrically connected or communicatively connected to the control system.

[0061] See Figure 7 , the supporting mechanism 5 is arranged between the clamping mechanism 4 and the driving and separating mechanism 2, and is used to support the shaft tooth part 6, and includes a supporting base 501 and a V-shaped support 502. The supporting base 501 is detachably connected or slidably connected to the plane, and the V-shaped support 502 is arranged on the supporting base 501 to support the shaft tooth part 6.

[0062] Working principle:

[0063] During use, the piston rod of the cylinder 205 is in the retracted state. At this time, the first dial head 212 and the second dial head 213 have no influence on each other, and the adapter 202 does not rotate with the positioning center 204 and the Morse shaft 201. Place the shaft gear part 6 on the V-shaped support 502, insert the positioning center 204 into the center hole at one end of the shaft gear part 6, and then use the control system to drive the pneumatic tailstock 401 to insert the movable center 402 into the center hole at the other end of the shaft gear part 6 to complete double-center positioning. The proximity switch 302 of the tooth searching mechanism 3 starts to distinguish the tooth groove and tooth top positions of the shaft gear part 6 according to the induction time, determines the correct clamping position of the clamped shaft gear part 6 and feeds it back to the control system. The control system controls the servo motor 101 to rotate a fixed angle, and drives the Morse shaft 201 and the positioning center 204 to rotate through the coupling 102, so as to drive the shaft gear part 6 to rotate, making the drive heads 208 on both sides of the shaft gear part 6 face the tooth grooves, and completing the positioning and clamping of the shaft gear part 6. Use the control system to control the piston rod of the cylinder 205 to push out, and the push plate 203 is pushed to push out the adapter 202, so that the first dial head 212 and the second dial head 213 are in perpendicular contact with each other, so that the adapter 202 and the positioning center 204 are combined. At this time, the adapter 202 rotates with the Morse shaft 201 and the positioning center 204. After the combination is completed, use the control system to control the servo motor 101 to drive, and drive the Morse shaft 201 and the positioning center 204 to rotate through the coupling 102, so as to drive the shaft gear part 6 to rotate. At this time, the driving force is only the static friction between the center hole of the shaft gear part 6 and the positioning center 204. Since it is driven by static friction, the shaft gear part 6 bears a circumferential force at this time.

[0064] The above power transmission route is as follows: The servo motor 101 reduces speed and increases torque through the reducer 103, and the coupling 102 eliminates the concentric error and transmits the torque to the positioning center 204. The positioning center 204 drives the adapter 202, and the adapter 202 drives the drive rod 207 and the drive head 208 to rotate. The drive head 208 is stuck in the tooth groove of the shaft gear part 6 to drive the shaft gear part 6 to rotate.

[0065] In summary, the present invention provides a driving device for a shift lever of a shaft gear part. By setting the clamping mechanism 4 and the driving separation and combination mechanism 2, the two ends of the shaft gear part 6 are clamped and positioned. The driving force applied to the shaft gear part 6 is the static friction force of the clamping mechanism 6 and the driving separation and combination mechanism 2 on the two ends of the shaft gear part 6. Since it is driven by static friction, the processed shaft gear part does not bear circumferential force, thereby improving the machining accuracy. By setting the tooth searching mechanism 3, the tooth groove and the tooth top position of the clamped shaft gear part are distinguished, so as to realize the accurate positioning and clamping of the clamped shaft gear part 6. And by setting the driving mechanism 1, the clamped shaft gear part is driven to rotate. Finally, through the coordinated setting of the control system, the accurate control of the positioning, clamping and driving rotation of the shaft gear part 6 is realized. The clamping accuracy is high, the clamping is simple and the efficiency is high, which is an advanced technology for the machining of shaft gear parts at present.

[0066] The above are only the preferred embodiments of the present invention, and are not used to limit the technical solutions of the present invention. Those skilled in the art should understand that, without departing from the spirit and principle of the present invention, the technical solutions can be subject to several simple modifications and substitutions, and these modifications and substitutions also fall within the protection scope covered by the claims.

Claims

1. A lever driving device for shaft and gear parts, It is characterized in that It comprises a driving mechanism (1), a driving separation and combination mechanism (2), a gear-finding mechanism (3), a tightening mechanism (4) and a control system which are arranged on the same horizontal plane; the driving mechanism (1), the gear-finding mechanism (3) and the tightening mechanism (4) are all connected to the control system; The control system is used to control the driving mechanism (1), the gear-finding mechanism (3) and the tightening mechanism (4) to position, tighten and drive the shaft gear parts (6) to rotate; The tightening mechanism (4) is used to cooperate with the driving separation and combination mechanism (2) to tighten and position the shaft gear parts (6); The driving separation and combination mechanism (2) is used to clamp the shaft gear part (6) and drive the shaft gear part (6) to rotate, and comprises a Morse shaft (201), a coupler (202), a push plate (203), a positioning top (204), a cylinder (205) and a base (209); The Morse shaft (201) passes through the base (209) in the horizontal direction and is rotatably connected to the base (209); the input end of the Morse shaft (201) is connected to the driving mechanism (1), and the output end of the Morse shaft (201) is connected to the positioning top (204); the positioning top (204) is provided with a first shifting head (212) in the radial direction; a plurality of driving rods (207) are provided on the coupler (202), and a driving head (208) is provided on the driving rod (207), and the driving head (208) is clamped between the teeth of the shaft gear part (6); a second shifting head (213) is provided on the end surface of the coupler (202), and the second shifting head (213) cooperates with and contacts the first shifting head (212), so that the coupler (202) and the Morse shaft (201) rotate synchronously; The connector (202) is rotatably sleeved on the outside of the positioning top (204) and is slidably connected to the positioning top (204) along the axial direction; a limiting groove (214) is provided on the connector (202) along the circumferential direction; One end of the push plate (203) abuts against the inner groove of the limiting groove (214), and the other end is connected to the top end of the piston rod of the cylinder (205); The cylinder (205) is electrically connected to a control system; The driving mechanism (1) is connected to the driving separation and combination mechanism (2) and is used to drive the driving separation and combination mechanism (2) to drive the shaft gear parts (6) to rotate; The gear-finding mechanism (3) is arranged between the clamping mechanism (4) and the drive separation and combination mechanism (2), and is used to identify the tooth top and tooth groove position of the shaft gear part (6), and to determine the clamping position of the shaft gear part (6).

2. The shaft gear part lever driving device according to claim 1, It is characterized in that The driving mechanism (1) comprises a servo motor (101) and a coupling (102), one end of the coupling (102) being connected to the output end of the servo motor (101), and the other end of the coupling (102) being connected to the driving separation and combination mechanism (2).

3. The shaft gear part lever driving device according to claim 2, It is characterized in that A speed reducer (103) is further provided between the servo motor (101) and the coupling (102).

4. The shaft gear part lever driving device according to claim 1, characterized in that an oil-free bushing (206) is further provided between the clutch (202) and the positioning center (204), the oil-free bushing (206) is made of copper alloy, and graphite is inlaid on the outside.

5. The shaft gear part lever driving device according to claim 1, characterized in that a limiting hole is provided on the end face of the base (209); a limiting block (210) corresponding to the limiting hole is provided on the clutch (202) for cooperating with the limiting hole to limit the clutch (202).

6. The shaft gear part lever driving device according to claim 1, characterized in that an angular contact bearing (211) is provided between the Morse shaft (201) and the base (209).

7. The shaft gear part lever driving device according to claim 1, characterized in that the tooth searching mechanism (3) includes a fixed base (301) and a proximity switch (302); the fixed base (301) is slidably arranged on the planes on both sides of the shaft gear part (6); the proximity switch (302) is arranged on the fixed base (301), and the proximity switch (302) is electrically connected to the control system.

8. The shaft gear part lever driving device according to claim 1, characterized in that the tightening mechanism (4) includes a pneumatic tailstock (401), a movable center (402) is provided at the end of the pneumatic tailstock (401) close to the shaft gear part (6), and the pneumatic tailstock (401) is electrically connected to the control system.

9. The shaft gear part lever driving device according to any one of claims 1-8, characterized in that the shaft gear part lever driving device further includes a supporting mechanism (5), the supporting mechanism (5) is arranged between the tightening mechanism (4) and the driving and separating and combining mechanism (2) for supporting the shaft gear part (6).

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