CN218362526U - Feeding and discharging mechanism for numerical control gear hobbing machine - Google Patents

Abstract

The application discloses last unloading mechanism for numerical control gear hobbing machine belongs to the industrial automation equipment field, includes: the device comprises a machine table, a blanking conveying belt, a feeding conveyor, a sliding table, a supporting block and a blanking plate; one end of the machine table extends into the gear hobbing machine; the blanking conveyer belt and the feeding conveyer are both arranged on the machine platform; the sliding table is arranged at one end of the machine table extending into the hobbing machine in a sliding manner, and two supporting tables are arranged on the sliding table in a sliding manner; the support blocks are arranged above the support table in a sliding manner in a one-to-one correspondence manner; the support block comprises a first slope surface and a second slope surface, the second slope surface is intersected and arranged at one end, away from the feeding conveyor, of the first slope surface, and the intersected end of the first slope surface and the second slope surface is lower than the end, away from the feeding conveyor, of the first slope surface; the blanking plate is arranged on one side, far away from the blanking conveyor, of the support block close to one side of the conveying belt in a sliding mode and used for pushing parts falling on the support block to the blanking conveying belt. The beneficial effect of this application lies in providing a stable in operation's numerical control gear hobbing machine that is applicable to axle type parts machining goes up unloading mechanism.

Description

Feeding and discharging mechanism for numerical control gear hobbing machine

Technical Field

The application relates to the field of industrial automation equipment, in particular to a feeding and discharging mechanism for a numerical control gear hobbing machine.

Background

The hobbing machine is one of the most widely used gear cutting machines, and produces cylindrical gears, worm gears, shafts with splines, etc. by using a hob according to a generating method. And the numerical control gear hobbing machine is additionally provided with a PLC control system on the basis of the gear hobbing machine so as to improve the machining precision and facilitate the control. In the related art, a numerical control horizontal hobbing machine tool generally includes a machine frame and a hobbing device mounted on the machine frame, and the hobbing device includes a worktable for driving a workpiece to rotate and a hobbing mechanism for hobbing the workpiece. Due to the fact that the machining efficiency is high, the machining precision is high, splines or tooth grooves of various transmission shafts on the new energy automobile are machined by a numerical control horizontal hobbing machine, shafts to be machined are horizontally placed in the numerical control horizontal hobbing machine, two ends of each shaft are clamped by a relevant clamping structure on the horizontal hobbing machine and driven to rotate, and hobbing is completed under the working of a rolling mechanism. When the numerical control gear hobbing machine is used, a workpiece is clamped and fixed on the workbench in a manual feeding mode, the workbench and the hobbing cutter mechanism are controlled by the PLC control system to operate to conduct gear hobbing on the workpiece, and after machining is completed, the machined workpiece is taken out in a manual discharging mode. The mode of artifical material loading and unloading has not only increased workman's intensity of labour, and machining efficiency is lower moreover, influences the production progress. Therefore, the loading and unloading mechanism of the gear hobbing machine needs to be automated. For example, in a numerical control gear hobbing machine disclosed in CN112238266B, after a workpiece is placed by a feeding mechanism, the workpiece is held by a manipulator and is conveyed to a gear hobbing machine for machining, and the machined workpiece is held by the manipulator and is placed on a belt to complete machining, so that automatic loading and unloading are realized.

In the structure, the manipulator is used for clamping the workpiece to move inside and outside the gear hobbing machine, and the workpiece is suspended in the air in the process. When shaft parts are machined, the shaft is in an elongated cylinder shape and is large in automation, and the surface of the shaft is subjected to finish machining after the front end process, so that when the shaft parts are moved by a manipulator, the parts are easy to slide off if the clamping force is insufficient, and the surface of the shaft is damaged if the clamping force is too large. In conclusion, the automatic feeding and discharging mode of the existing numerical control gear hobbing machine has the problem of unstable work.

At present, no feeding and discharging mechanism which works stably and is suitable for the numerical control gear hobbing machine for processing shaft parts exists.

SUMMERY OF THE UTILITY MODEL

This summary is provided to introduce a selection of concepts in a simplified form that are further described below in the detailed description. This summary is not intended to identify key features or essential features of the claimed subject matter, nor is it intended to be used to limit the scope of the claimed subject matter.

In order to solve the technical problems mentioned in the background section above, some embodiments of the present application provide a feeding and discharging mechanism for a numerical control gear hobbing machine, including: the device comprises a machine table, a blanking conveying belt, a loading conveyor, a sliding table, a supporting block and a blanking plate; wherein, one end of the machine table extends into the gear hobbing machine; the blanking conveying belt and the feeding conveying machine are both arranged on the machine table and are positioned on the same side outside the gear hobbing machine; the feeding conveyor is used for conveying the parts to be machined into the gear hobbing machine; the blanking conveying belt is used for moving the processed parts out of the gear hobbing machine; the blanking conveyer belt is positioned at one side of the feeding conveyer and is arranged in parallel with the feeding conveyer; the sliding table is arranged at one end of the machine table extending into the hobbing machine in a sliding manner, two supporting tables are arranged on the sliding table in a sliding manner, the two supporting tables are arranged on the sliding table in parallel, the sliding direction of the sliding table relative to the machine table is different from the sliding direction of the supporting table relative to the sliding table, and the sliding table and the supporting table both slide in a horizontal plane; the support blocks are arranged above the support table in a sliding manner in a one-to-one correspondence manner; the supporting block slides along the vertical direction relative to the supporting table and is used for transporting and processing parts among the feeding conveyor, the gear hobbing machine and the discharging conveying belt; the support block comprises a first slope surface and a second slope surface, the second slope surface is intersected and arranged at one end, away from the feeding conveyor, of the first slope surface, the intersected end of the first slope surface and the second slope surface is lower than the end, away from the feeding conveyor, of the first slope surface, and materials on the feeding conveyor can fall onto the first slope surface and roll down between the first slope surface and the second slope surface along the first slope surface; the blanking plate is arranged on one side, away from the blanking conveyor, of the support block close to one side of the conveying belt in a sliding mode and used for pushing parts falling on the support block to the blanking conveying belt.

The feeding conveyor and the blanking conveyor belt are located on the same side of the gear hobbing machine, so that an operator can conveniently place a shaft to be processed on the feeding conveyor or take down the processed shaft from the blanking conveyor belt. During feeding, the shaft to be processed slides along the first slope surface from the feeding conveyor and falls between the first slope surface and the second slope surface, so that the support block plays a role in supporting the shaft. Then, along with the removal of supporting shoe and slip table, the axle on the tray is moved near the hobbing cutter mechanism of gear hobbing machine, and the tray moves about the supporting bench, and the last clamping structure centre gripping of gear hobbing machine is fixed the both ends of axle, and hobbing cutter mechanism begins the processing axle afterwards. The processed shaft falls on the other supporting block, the supporting block moves to one end of the blanking conveying belt along with the sliding table and the supporting table, and the blanking plate slides relative to the supporting block at the moment to push the processed shaft to the blanking conveying belt. In the working process, the support block is supported at the bottom of the shaft when the shaft is conveyed, and meanwhile, the first slope surface and the second slope surface limit the shaking of the shaft, so that the shaft is stable when conveyed in the gear hobbing machine, the fixed shaft is not clamped in the conveying process, and the damage to the surface of the shaft is small. So, when processing each axis class part of new energy automobile on spline or tooth's socket, axle type part moves steadily when business turn over numerical control gear hobbing machine, and the surface accuracy of axle obtains the protection for the last unloading mechanism of this application has job stabilization's advantage, is applicable to the gear hobbing processing of axle type part.

Furthermore, a blanking cylinder is fixed on the support block close to one side of the blanking conveying belt, and one end of the blanking cylinder is connected with a blanking plate and used for driving the blanking plate to slide relative to the support block; a supporting hydraulic cylinder is fixed on the supporting platform, and the top end of the supporting hydraulic cylinder is connected with a supporting block and used for driving the supporting block to slide relative to the supporting platform; the bottom end of the supporting block is provided with a limiting rod; a limiting sleeve rod matched with the limiting rod is arranged on the supporting platform; one end of the limiting rod is inserted into the limiting sleeve rod, and the limiting sleeve rod are matched to limit the sliding direction of the supporting block relative to the supporting table.

Furthermore, a feeding cylinder is fixed on the sliding table; the feeding cylinder is connected with the support table and used for driving the support table to slide relative to the sliding table; the side face of one end, inserted into the gear hobbing machine, of the machine table is fixedly provided with a transverse moving cylinder, and the transverse moving cylinder is connected with the sliding table and used for driving the sliding table to slide relative to the machine table.

Further, the feeding conveyor includes: the chain wheel, the transmission chain, the transmission shaft and the driving motor; two parallel mounting plates are arranged on the machine table, and one end of each mounting plate extends into the gear hobbing machine; each chain wheel is respectively and rotatably arranged on each mounting plate; two ends of each mounting plate are respectively provided with a chain wheel, and the two chain wheels at the same end of the two mounting plates are oppositely arranged; the transmission chain is arranged between two chain wheels at two ends of the same mounting plate, so that the two chain wheels can synchronously rotate; the transmission shaft is arranged between two opposite chain wheels at the same end of the two mounting plates so as to enable the two opposite chain wheels to synchronously rotate; the driving motor is fixed on the machine table, and an output shaft of the driving motor is fixedly connected with one of the transmission shafts to drive the transmission shaft to rotate; a plurality of conveying pieces are fixedly arranged on the transmission chain, two conveying blocks with one ends arranged in an intersecting mode are arranged on the conveying pieces, and the other ends of the two conveying blocks are far away from each other.

Furthermore, the conveying block is fixedly provided with a buffer block, the buffer block protrudes out of the surface of the conveying block, and the parts to be processed can be placed above the two conveying blocks of the same conveying piece and fall on the two buffer blocks.

Further, the material loading conveyer still includes: a traction plate and a support rod; the traction plates are positioned between the two mounting plates and correspond to the transmission chains one by one; the supporting rod penetrates through each traction plate, and two ends of the supporting rod are respectively fixed on the two mounting plates and used for supporting the traction plates; one end of the conveying piece close to the traction plate is abutted against the surface of the traction plate; the conveying piece is provided with a limiting part; the upper end and the lower end of the traction plate are respectively provided with a limiting groove, and when the conveying piece moves along with the transmission chain, the limiting part can be inserted into the limiting grooves from one end of the traction plate.

Further, the material loading conveyer still includes: a rotating shaft, a threaded sleeve and a hand wheel; the rotating shaft is rotatably arranged between the two mounting plates; external threads are respectively arranged at two ends of the rotating shaft, and the rotating directions of the two external threads are opposite; the threaded sleeves are fixed on the traction plate, and the two external threads respectively penetrate through the two threaded sleeves, so that the rotating shaft is in threaded connection with the traction plate through the threaded sleeves; the hand wheel is fixed at one end of the rotating shaft.

Furthermore, long keys are respectively and fixedly arranged at two ends of the transmission shaft; a key groove is arranged on the chain wheel in a penetrating way, and the long key is inserted into the key groove so as to enable the chain wheel to form rotation stopping connection with the transmission shaft; one end of the chain wheel between the two mounting plates is provided with an extension part; one end of the extension part is provided with a connecting part, and the outer diameter of the connecting part is smaller than that of the extension part; the extension part penetrates through the traction plate and is rotationally connected with the traction plate; the connecting part is fixedly provided with a transparent cover, and the traction plate is positioned between the transparent cover and the extending part.

The beneficial effect of this application lies in: the utility model provides a stable operation's numerical control gear hobbing machine that is applicable to axle type parts machining goes up unloading mechanism.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, are included to provide a further understanding of the application and to enable other features, objects, and advantages of the application to be more apparent. The drawings and their description illustrate the embodiments of the invention and do not limit it.

Further, throughout the drawings, the same or similar reference numerals denote the same or similar elements. It should be understood that the drawings are schematic and that elements and elements are not necessarily drawn to scale.

In the drawings:

FIG. 1 is an overall schematic diagram according to an embodiment of the present application;

FIG. 2 is a sectional view of a part of the structure of the embodiment, mainly showing the structure of a feed cylinder and the like;

FIG. 3 is a schematic structural view of a portion of the embodiment, mainly showing a traction plate or the like;

FIG. 4 is a structural sectional view of a part of the embodiment, mainly showing a screw boss and the like;

FIG. 5 is an enlarged view of portion A of FIG. 3;

FIG. 6 is a schematic structural view of the sprocket of FIG. 3;

fig. 7 is a schematic structural view of the propeller shaft of fig. 3.

Reference numerals are as follows:

110. a machine platform; 111. a transverse moving cylinder; 112. a slide rail; 113. mounting a plate;

120. blanking a conveying belt;

130. a feeding conveyor; 131. a sprocket; 131a, a key groove; 131b, an extension; 131c, a connecting portion; 131d, a transparent cover; 132. a drive chain; 132a, a transport; 132b, a conveying block; 132c, a buffer block; 132d, a stopper; 133. a drive shaft; 133a, long key; 134. a drive motor; 135. a traction plate; 135a and a limiting groove; 136. a support rod; 137. a rotating shaft; 137a, external threads; 138. a threaded sleeve; 139. a hand wheel;

140. a sliding table; 141. a support table; 142. supporting a hydraulic cylinder; 143. a limiting sleeve rod; 144. a notch; 145. a feeding cylinder;

150. a supporting block; 151. a first slope surface; 152. a second slope surface; 153. a blanking cylinder; 154. a limiting rod;

160. and discharging the material plate.

Detailed Description

Embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While certain embodiments of the present disclosure are shown in the drawings, it is to be understood that the disclosure may be embodied in various forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided for a more thorough and complete understanding of the present disclosure. It should be understood that the drawings and embodiments of the disclosure are for illustration purposes only and are not intended to limit the scope of the disclosure.

It should be noted that, for convenience of description, only the portions related to the present invention are shown in the drawings. The embodiments and features of the embodiments in the present disclosure may be combined with each other without conflict.

It should be noted that the terms "first", "second", and the like in the present disclosure are only used for distinguishing different devices, modules or units, and are not used for limiting the order or interdependence of the functions performed by the devices, modules or units.

It is noted that references to "a", "an", and "the" modifications in this disclosure are intended to be illustrative rather than limiting, and that those skilled in the art will recognize that "one or more" may be used unless the context clearly dictates otherwise.

The present disclosure will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

Referring to fig. 1 to 7, a feeding and discharging mechanism for a numerical control gear hobbing machine includes: the device comprises a machine table 110, a blanking conveying belt 120, a feeding conveyor 130, a sliding table 140, a support block 150 and a blanking plate 160. Wherein, one end of the machine table 110 extends into the gear hobbing machine. The blanking conveyor 120 and the feeding conveyor 130 are both disposed on the machine table 110 and located at the same side of the gear hobbing machine. The feeding conveyor 130 is used to convey the parts to be machined into the hobbing machine. Blanking conveyer belt 120 the blanking conveyer belt 120 is a belt conveyer mechanism commonly used on an automation line, and is used for moving the processed parts out of the hobbing machine, and the structure thereof is not described herein again. The blanking conveyer belt 120 is located at one side of the feeding conveyer 130, and the two are arranged in parallel. The sliding table 140 is slidably disposed at one end of the machine table 110 extending into the hobbing machine, the sliding table 140 is slidably disposed with two supporting tables 141, the two supporting tables 141 are disposed in parallel on the sliding table 140, and a sliding direction of the sliding table 140 relative to the machine table 110 is different from a sliding direction of the supporting table 141 relative to the sliding table 140, and both of the two supporting tables slide in a horizontal plane. The trays 150 are slidably disposed above the supporting stage 141 in a one-to-one correspondence. The carrier block 150 slides in a vertical direction with respect to the support table 141 for transporting the processed parts among the feeding conveyor 130, the hobbing machine, and the feeding conveyor 120. Specifically, the sliding direction of the sliding table 140 relative to the machine table 110 is defined as an X direction, and the sliding direction of the supporting table 141 relative to the sliding table 140 is defined as a Y direction, so that the straight line of the X direction and the straight line of the Y direction are in the same horizontal plane, the straight line of the X direction and the straight line of the Y direction are perpendicular to each other, and meanwhile, the length direction of the blanking conveying belt 120 is parallel to the Y direction. The region where the numerical control gear hobbing machine performs gear hobbing is located between the blanking conveyor belt 120 and the feeding conveyor 130, and the slide table 140 can be moved into the machining region of the numerical control gear hobbing machine. The two support platforms 141 can move from one end of the blanking conveyor belt 120 and one end of the feeding conveyor 130 to between the feeding conveyor 130 and the blanking conveyor belt 120, respectively, and when one support platform 141 is located between the feeding conveyor 130 and the blanking conveyor belt 120, the other support platform 141 is located at one end of the feeding conveyor 130/one end of the blanking conveyor belt 120, that is, when the support blocks 150 move along with the support platforms 141 and the sliding tables 140, the two support blocks 150 can move into the machining area of the hobbing machine, respectively, so as to convey the shaft to be machined on the support blocks 150 to the hobbing machine machining area, or take off the machined shaft from the hobbing machine machining area by using the support blocks 150.

As shown in fig. 2, the supporting block 150 includes a first slope surface 151 and a second slope surface 152, the second slope surface 152 is disposed at an end of the first slope surface 151 away from the feeding conveyor 130 in an intersecting manner, and the intersecting end is lower than the end of the first slope surface away from the feeding conveyor 130, that is, the first slope surface and the second slope surface form a "V" shape, and a shaft on the feeding conveyor 130 can fall onto the first slope surface and roll along the first slope surface 151 to a position between the first slope surface 151 and the second slope surface 152, so that the shaft is stabilized in the "V" shaped area formed by the first slope surface and the second slope surface, thereby facilitating conveying various shafts with different diameter specifications. The blanking plate 160 is slidably disposed on a side of the support block 150 close to the conveyor belt, which is far from the blanking conveyor, for pushing the parts falling on the support block 150 onto the blanking conveyor belt 120.

In a preferred embodiment, the blanking plate 160, the support block 150, the support table 141 and the slide table 140 are moved in a corresponding manner: a blanking cylinder 153 is arranged on the support block 150 close to one side of the blanking conveyor belt 120, the blanking cylinder 153 is fixed at one end of the support block 150 close to the second slope surface 152, and one end of the blanking cylinder 153 is fixedly connected with the blanking plate 160, so that the blanking cylinder 153 can drive the blanking plate 160 to slide relative to the support block 150, and a shaft on the support block 150 can be conveniently pushed onto the blanking conveyor belt 120. A support hydraulic cylinder 142 is fixed to the support base 141, and a holder 150 is connected to a top end of the support hydraulic cylinder 142 so as to drive the holder 150 to slide relative to the support base 141. A limiting rod 154 is arranged at the bottom end of the supporting block 150. A stopper rod 143 engaged with the stopper rod 154 is provided on the support base 141. One end of the limiting rod 154 is inserted into the limiting sleeve rod 143, and the two are matched to limit the sliding direction of the support block 150 relative to the support platform 141, so that the support block 150 moves stably. And the position-limiting sleeve rod 143 has a through gap 144 to balance the air pressure inside and outside the position-limiting sleeve rod 143, so that the support block 150 can move smoothly. A feed cylinder 145 is fixed to the slide table 140. The feeding cylinder 145 is connected to the support table 141 to drive the support table 141 to slide relative to the slide table 140. The lateral surface of one end of the machine table 110 inserted into the hobbing machine is fixedly provided with a transverse moving cylinder 111, and the transverse moving cylinder 111 is connected with the sliding table 140 so as to drive the sliding table 140 to slide relative to the machine table 110. The sliding rails 112 are fixedly disposed on the sliding table 140 and the machine table 110, and the supporting table 141 is slidably connected to the sliding table 140 through the sliding rails 112 on the sliding table 140, so that the supporting table 141 moves stably on the sliding table 140. The sliding table 140 is slidably connected to the machine table 110 through the sliding rail 112 on the machine table 110, so that the sliding table 140 can move stably on the machine table 110.

Further, as shown in fig. 3 to 5, the feeding conveyor 130 includes: a chain wheel 131, a transmission chain 132, a transmission shaft 133 and a driving motor 134. Two parallel mounting plates 113 are arranged on the machine table 110, one end of each mounting plate 113 extends into the hobbing machine, and the length direction of each mounting plate 113 is parallel to the Y direction. The sprockets 131 are rotatably mounted on the mounting plates 113, respectively. Specifically, a sprocket 131 is mounted to each of the two ends of each mounting plate 113, and the two sprockets 131 on the same end of the two mounting plates 113 are disposed opposite to each other. The transmission chain 132 is disposed between the two chain wheels 131 at two ends of the same mounting plate 113, and a chain transmission is formed between the three so that the two chain wheels 131 synchronously rotate. The length direction of the transmission shaft 133 is parallel to the X direction, and is disposed between two opposite sprockets 131 at the same end of the two mounting plates 113, so that the two opposite sprockets 131 are synchronously rotated by the transmission shaft 133. The driving motor 134 is fixed on the machine base 110, and an output shaft thereof is fixedly connected to one of the transmission shafts 133 to drive the transmission shaft 133 to rotate, so that the chain wheels 131 and the transmission chain 132 move synchronously. The transmission chain 132 is fixedly provided with a plurality of conveying members 132a, and the conveying members 132a are uniformly arranged on the transmission chain 132. The conveying piece 132a is provided with two conveying blocks 132b with one ends arranged in a crossed manner, the other ends of the two conveying blocks 132b are arranged far away from each other, namely the two conveying blocks 132b on the same conveying piece 132a form a V shape, a shaft to be processed can be placed in the V-shaped area formed by the two conveying pieces 132a, and the two ends of the shaft to be processed are respectively placed on the two corresponding conveying pieces 132a on the two transmission chains 132, so that the axis of the shaft to be processed is parallel to the X direction. Thus, when the driving motor 134 is operated, the shaft to be machined placed on each conveying block 132b moves along with the driving chain 132 into the gear hobbing machine and gradually moves to fall onto the carrier 150 as the driving chain 132 moves. And the middle part of the shaft to be processed falls on the supporting block 150, that is, the supporting block 150 can move to between the two transmission chains 132, so that the shaft to be processed can smoothly move to the supporting block 150, and the transportation of the shaft to be processed from the feeding conveyor 130 to the supporting block 150 is completed. In another alternative, the two conveying blocks 132b are integrally formed, which also meets the use requirement.

Further, as shown in fig. 5, a buffer block 132c is fixedly disposed on the conveying block 132b, the buffer block 132c protrudes from the surface of the conveying block 132b, the to-be-processed component can be placed above the two conveying blocks 132b of the same conveying member 132a and fall on the two buffer blocks 132c, and the buffer blocks 132c are made of "race steel" or rubber material and are used for reducing friction between the conveying blocks 132b and the to-be-processed shaft, so as to reduce damage to the surface of the to-be-processed shaft in the further conveying process.

Further, in order to make the conveying member 132a move smoothly on the transmission chain 132, it is ensured that the shaft is kept stable during movement. A traction plate 135 and a supporting rod 136 are further provided on the feeding conveyor 130. The traction plate 135 is located between the two mounting plates 113, and corresponds to the transmission chains 132 one by one. The support rods 136 pass through the traction plates 135 and are fixed at both ends thereof to the two mounting plates 113, respectively, for supporting the traction plates 135, and the number of the support rods 136 is most preferably two, so that the mounting plates 113 are stabilized between the two drive chains 132. One end of the conveying member 132a close to the traction plate 135 abuts against the surface of the traction plate 135, i.e. the traction plate 135 supports the conveying member 132a above it when the shaft is placed on the conveying member 132a and moves with the conveying member 132 a. The conveying member 132a is provided with a stopper 132d. The upper end and the lower end of the traction plate 135 are respectively provided with a limiting groove 135a, when the conveying piece 132a moves along with the transmission chain 132, the limiting part 132d can be inserted into the limiting groove 135a from one end of the traction plate 135 to limit the swinging of the conveying piece 132a along the X direction, so that the stability of the shaft to be processed and the conveying piece 132a moving along with the transmission chain 132 is ensured.

Further, as shown in fig. 4, in practical use, the same gear hobbing machine is often used for processing shafts with different length specifications, and in order to adapt to the length change of the shaft, a rotating shaft 137, a threaded sleeve 138 and a hand wheel 139 are further arranged on the feeding conveyor 130. Wherein, the rotating shaft 137 is rotatably disposed between the two mounting plates 113, and the two ends of the rotating shaft 137 are respectively provided with an external thread 137a, and the rotating directions of the two external threads 137a are opposite. The screw sleeve 138 is fixed on the traction plate 135, and the two external threads 137a respectively penetrate through the two screw sleeves 138, so that the rotating shaft 137 is in threaded connection with the traction plate 135 through the screw sleeves 138. A handwheel 139 is fixed to one end of the shaft 137, and the handwheel 139 is located on the side of the mounting plate 113 remote from the traction plate 135. When the device is used, the rotating shaft 137 is driven to rotate by rotating the hand wheel 139, the threaded sleeve 138 drives the traction plate 135 to move by matching the external thread 137a with the threaded sleeve 138 in the process, and the sliding directions of the two traction plates 135 are opposite, so that the distance between the two traction plates 135 is adjusted, the wall surface of the limiting groove 135a formed by the traction plates 135 pushes the limiting part 132d to move, and therefore the conveying piece 132a, the transmission chain 132 and the chain wheel 131 synchronously move along with the traction plates 135, the distance between the two transmission chains 132 is adjusted, and shafts with different length specifications are conveniently conveyed.

Further, as shown in fig. 6 to 7, long keys 133a are fixedly provided at both ends of the driving shaft 133, respectively. The sprocket 131 is provided with a key slot 131a, and the long key 133a is inserted into the key slot 131a, so that the sprocket 131 and the transmission shaft 133 form a rotation-stopping connection. The long key 133a can also slide relative to the key groove 131 a. An end of the sprocket 131 between the two mounting plates 113 is provided with an extension 131b. One end of the extension portion 131b is provided with a connection portion 131c, and the outer diameter of the connection portion 131c is smaller than that of the extension portion 131b. The extension 131b passes through the traction plate 135 and is rotatably coupled to the traction plate 135. The connecting portion 131c is fixedly provided with a transparent cover 131d, and the pulling plate 135 is located between the transparent cover 131d and the extending portion 131b, so that when the distance between the two pulling plates 135 is adjusted, the sprocket 131 is directly driven to synchronously move by pushing the transparent cover 131d or the extending portion 131b.

The numerical control gear hobbing machine of this embodiment is with last unloading mechanism when using, treat that the processing axle both ends are placed on the conveyer 132a, get into the gear hobbing machine along with the removal of driving chain 132 in, and transfer to on the tray 150, the pay-off cylinder 145 drives this tray 150 and keeps away from material loading conveyer 130 afterwards, sideslip cylinder 111 drives this tray 150 and moves to gear hobbing machine machining region below, bearing hydraulic cylinder 142 drives tray 150 and moves upward, so that the clamping mechanism centre gripping of gear hobbing machine is fixed and is treated the processing axle, later tray 150, brace table 141 and slip table 140 reset, vacate the space for this axle of gear hobbing machine processing. After the machining is completed, the sliding table 140 and the supporting table 141 drive another supporting block 150 to move to the lower part of the machining area of the gear hobbing machine, the supporting hydraulic cylinder 142 connected with the supporting block 150 moves upwards, so that the supporting block 150 supports the machined shaft, the shaft is moved to one end of the blanking conveying belt 120 by using the sliding table 140 and the supporting table 141, the blanking cylinder 153 pushes the blanking plate 160 to move, the machined shaft on the supporting block 150 is pushed to the blanking conveying belt 120, and the machined shaft is conveyed out of the gear hobbing machine by the blanking conveying belt 120.

The foregoing description is only exemplary of the preferred embodiments of the disclosure and is illustrative of the principles of the technology employed. It will be appreciated by those skilled in the art that the scope of the invention in the embodiments of the present disclosure is not limited to the specific combination of the above-mentioned features, but also encompasses other embodiments in which any combination of the above-mentioned features or their equivalents is made without departing from the inventive concept as defined above. For example, the above features and (but not limited to) technical features with similar functions disclosed in the embodiments of the present disclosure are mutually replaced to form the technical solution.

Claims (8)

1. The utility model provides a last unloading mechanism for numerical control gear hobbing machine, includes: the device comprises a machine table, a blanking conveying belt and a feeding conveyor; one end of the machine table extends into the gear hobbing machine; the blanking conveying belt and the feeding conveying machine are both arranged on the machine table and are positioned on the same side outside the gear hobbing machine; the feeding conveyor is used for conveying the parts to be machined into the gear hobbing machine; the blanking conveying belt is used for moving the processed parts out of the gear hobbing machine; the blanking conveyer belt is positioned at one side of the feeding conveyer and arranged in parallel;

the method is characterized in that:

numerical control gear hobbing machine is with going up unloading mechanism still includes: a sliding table, a supporting block and a blanking plate; the sliding table is arranged at one end of the machine table extending into the hobbing machine in a sliding manner, two supporting tables are arranged on the sliding table in a sliding manner, the two supporting tables are arranged on the sliding table in parallel, the sliding direction of the sliding table relative to the machine table is different from the sliding direction of the supporting table relative to the sliding table, and the sliding table and the supporting table both slide in a horizontal plane; the support blocks are arranged above the support table in a sliding manner in a one-to-one correspondence manner; the supporting block slides along the vertical direction relative to the supporting table and is used for transporting the processed parts among the feeding conveyor, the hobbing machine and the feeding conveying belt; the support block comprises a first slope surface and a second slope surface, the second slope surface is intersected and arranged at one end, away from the feeding conveyor, of the first slope surface, the intersected end of the first slope surface and the second slope surface is lower than the end, away from the feeding conveyor, of the first slope surface, and materials on the feeding conveyor can fall onto the first slope surface and roll down between the first slope surface and the second slope surface along the first slope surface; the blanking plate is arranged on one side, far away from the blanking conveyor, of the support block on one side close to the conveying belt in a sliding mode and used for pushing parts falling on the support block to the blanking conveying belt.

2. The loading and unloading mechanism for the numerical control gear hobbing machine as claimed in claim 1, wherein: a blanking cylinder is fixed on the support block close to one side of the blanking conveying belt, and one end of the blanking cylinder is connected with a blanking plate and used for driving the blanking plate to slide relative to the support block; a supporting hydraulic cylinder is fixed on the supporting platform, and the top end of the supporting hydraulic cylinder is connected with a supporting block and used for driving the supporting block to slide relative to the supporting platform; the bottom end of the supporting block is provided with a limiting rod; a limiting sleeve rod matched with the limiting rod is arranged on the supporting platform; one end of the limiting rod is inserted into the limiting sleeve rod, and the limiting sleeve rod are matched to limit the sliding direction of the supporting block relative to the supporting table.

3. The loading and unloading mechanism for the numerical control gear hobbing machine according to claim 2, characterized in that: a feeding cylinder is fixed on the sliding table; the feeding cylinder is connected with the support table and used for driving the support table to slide relative to the sliding table; the side face of one end, inserted into the hobbing machine, of the machine table is fixedly provided with a transverse moving cylinder, and the transverse moving cylinder is connected with the sliding table and used for driving the sliding table to slide relative to the machine table.

4. The loading and unloading mechanism for the numerical control gear hobbing machine as claimed in claim 1, characterized in that: the material loading conveyor comprises: the chain wheel, the transmission chain, the transmission shaft and the driving motor; two parallel mounting plates are arranged on the machine table, and one end of each mounting plate extends into the gear hobbing machine; each chain wheel is respectively and rotatably arranged on each mounting plate; two ends of each mounting plate are respectively provided with a chain wheel, and the two chain wheels at the same end of the two mounting plates are oppositely arranged; the transmission chain is arranged between the two chain wheels at the two ends of the same mounting plate so that the two chain wheels can synchronously rotate; the transmission shaft is arranged between two opposite chain wheels at the same end of the two mounting plates so as to enable the two opposite chain wheels to synchronously rotate; the driving motor is fixed on the machine table, and an output shaft of the driving motor is fixedly connected with one transmission shaft so as to drive the transmission shaft to rotate; a plurality of conveying pieces are fixedly arranged on the transmission chain, two conveying blocks with one ends arranged in an intersecting mode are arranged on the conveying pieces, and the other ends of the two conveying blocks are far away from each other.

5. The loading and unloading mechanism for the numerical control gear hobbing machine according to claim 4, characterized in that: the conveying block is fixedly provided with a buffer block, the buffer block protrudes out of the surface of the conveying block, and parts to be processed can be placed above the two conveying blocks of the same conveying piece and fall on the two buffer blocks.

6. The loading and unloading mechanism for the numerical control gear hobbing machine according to claim 4, characterized in that: the material loading conveyer still includes: a traction plate and a support rod; the traction plate is positioned between the two mounting plates and corresponds to the transmission chains one by one; the supporting rod penetrates through each traction plate, and two ends of the supporting rod are respectively fixed on the two mounting plates and used for supporting the traction plates; one end of the conveying piece close to the traction plate is abutted against the surface of the traction plate; the conveying piece is provided with a limiting part; the upper end and the lower end of the traction plate are respectively provided with a limiting groove, and when the conveying piece moves along with the transmission chain, the limiting part can be inserted into the limiting grooves from one end of the traction plate.

7. The loading and unloading mechanism for the numerical control gear hobbing machine as claimed in claim 6, characterized in that: the material loading conveyor further comprises: a rotating shaft, a threaded sleeve and a hand wheel; the rotating shaft is rotatably arranged between the two mounting plates; external threads are respectively arranged at two ends of the rotating shaft, and the rotating directions of the two external threads are opposite; the threaded sleeves are fixed on the traction plate, and the two external threads respectively penetrate through the two threaded sleeves, so that the rotating shaft is in threaded connection with the traction plate through the threaded sleeves; the hand wheel is fixed at one end of the rotating shaft.

8. The loading and unloading mechanism for the numerical control gear hobbing machine according to claim 7, characterized in that: long keys are respectively and fixedly arranged at the two ends of the transmission shaft; a key groove is arranged on the chain wheel in a penetrating manner, and a long key is inserted into the key groove so as to enable the chain wheel to form rotation stopping connection with the transmission shaft; an extension part is arranged at one end of the chain wheel between the two mounting plates; one end of the extension part is provided with a connecting part, and the outer diameter of the connecting part is smaller than that of the extension part; the extension part penetrates through the traction plate and is rotationally connected with the traction plate; the connecting part is fixedly provided with a transparent cover, and the traction plate is positioned between the transparent cover and the extension part.

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