Clamping and feeding device for chamfering machining of annular workpiece

Abstract

The utility model relates to the technical field of annular workpiece machining, in particular to a clamping and feeding device for annular workpiece chamfering machining. The utility model discloses a clamping feeding device for chamfering processing of annular workpieces, which comprises a clamping jaw mechanism and a feeding groove used for being connected with the discharging end of a feeding mechanism, the clamping jaw mechanism comprises a clamping jaw and a first driving assembly used for enabling the clamping jaw to move, and the feeding groove is matched with a pushing mechanism. The pushing mechanism comprises a pushing block used for stretching into the feeding groove and a second driving assembly used for enabling the pushing block to move, and the moving direction of the pushing block is the same as the extending direction of the feeding groove under the action of the second driving assembly. The fixture has the advantage of preventing the space position of the annular workpiece from deviating to influence the subsequent machining precision.

Description

Technical Field

[0001] The utility model relates to the technical field of chamfering of annular workpieces, in particular to a clamping and feeding device for chamfering of annular workpieces. Background Art

[0002] The Chinese patent application with application number 202310723209.X discloses a double-head chamfering device for annular workpieces, including a vibrating plate for realizing automatic arrangement and feeding of annular workpieces, a discharging track for supporting and tilting the annular workpieces, and a transfer mechanism located at the lower end of the discharging track. The transfer mechanism includes a transfer cylinder, and the output end of the transfer cylinder is coaxially connected to a rod-shaped connecting piece, the front end of the connecting piece is a supporting part for extending into the hole of the annular workpiece and supporting the annular workpiece, and the end of the connecting piece is provided with an abutting part for abutting against the end surface of the annular workpiece and pushing the annular workpiece to move together. Among them, a movable plate for avoiding the annular workpiece is movably connected to the side baffle of the lowest section of the discharging track.

[0003] In the above scheme, when the connecting member pushes the annular workpiece located at the lowermost side of the discharge track, the transfer cylinder drives the supporting part at the front end of the connecting member to extend into the hole of the annular workpiece, so that the outer wall of the supporting part contacts the hole wall of the annular workpiece, and the abutting part abuts against the axial end face of the annular workpiece. Subsequently, the connecting member continues to move under the action of the transfer cylinder and pushes the annular workpiece to move together, thereby driving the annular workpiece to move to the set position.

[0004] During the movement of the annular workpiece, the annular workpiece will collide with the movable plate, so that the movable plate is pushed and turned over. As the annular workpiece continues to move, the movable plate will successively rub against the outer wall of the annular workpiece at the bottom, the outer surface of the abutment part and the rod-shaped part of the connector. The movable plate may be deformed, so that the annular workpiece at the bottom of the discharge track cannot be laterally positioned, causing the annular workpiece at the bottom to be tilted and the inner hole and the support part to be not coaxial. At the same time, after the annular workpiece at the bottom is separated from the discharge track, the annular workpiece at the upper side will move downward along the discharge track under the action of its own weight, and will collide with the connector, causing the front end of the connector to bend and deform, thereby causing the support part and the abutment part at the front end of the connector to be unable to be coaxial with the annular workpiece. If the connector cannot be coaxial with the annular workpiece, it is difficult to ensure that the annular workpiece is pushed to the specified position, and the axial position of the annular workpiece is difficult to determine. When chamfering, it is difficult to determine the chamfering depth, requiring secondary processing or easily producing defective products. Utility Model Content

[0005] The utility model aims to provide a clamping and feeding device for machining annular workpieces which can ensure the axial position of the annular workpieces and is convenient for subsequent chamfering.

[0006] To achieve the above-mentioned purpose, the utility model discloses a clamping and feeding device for chamfering of an annular workpiece, comprising a clamping jaw mechanism and a feeding trough for connecting with the discharge end of a feeding mechanism, the clamping jaw mechanism comprising a clamping jaw and a first driving assembly for moving the clamping jaw, the feeding trough is equipped with a pushing mechanism, the pushing mechanism comprising a pushing block for extending into the feeding trough and a second driving assembly for moving the pushing block, the moving direction of the pushing block is the same as the extending direction of the feeding trough under the action of the second driving assembly, and a baffle is provided on the extending direction side of the feeding trough, and a clearance space for the clamping jaw to pass through is provided between the baffle and the end of the feeding trough, the moving direction of the clamping jaw under the action of the first driving assembly is perpendicular to the extending direction of the feeding trough, and clamping grooves are provided at adjacent locations of the two clamping jaws. When the clamping jaw moves to the clearance space under the action of the first driving assembly, the clamping groove is aligned with the outlet of the feeding trough.

[0007] When the annular workpiece needs to be loaded, the feeding mechanism moves the annular workpiece into the loading trough, and the pushing mechanism enables the pushing block located in the loading trough to push the annular workpiece to between the baffle and the end of the loading trough through the second driving assembly. The pushing block limits the annular workpiece between the baffle and the pushing block by tightening, thereby realizing the axial limitation of the annular workpiece, and then the two jaws close to clamp the annular workpiece to limit the radial position of the annular workpiece and further limit the axial position of the annular workpiece. Next, the pushing block is reset, and the jaws leave the clearance space under the action of the first driving assembly and move the annular workpiece to the set position.

[0008] After the annular workpiece is axially limited by the push block and the baffle, the jaws on both sides are closed, which can achieve clamping and fixing of the annular workpiece, and locate the radial position and axial position of the annular workpiece to prevent the annular workpiece from shifting its own spatial position and affecting the subsequent processing accuracy. When performing chamfering, the chamfering depth can be avoided from changing, and secondary processing is not required to improve production efficiency and increase the production qualification rate.

[0009] Among them, when the annular workpiece is located in the feeding trough, the axial direction of the annular workpiece should be the same as the extension direction of the feeding trough, so that when the annular workpiece moves to the clearance space, its circumferential outer wall can contact with the clamp and be held by the clamp; wherein, the gap between the clamp located in the clearance space and the outlet of the feeding trough should be smaller than the axial thickness of the annular workpiece.

[0010] The utility model provides a clearance space between the baffle and the end of the loading chute, so that the axial position of the annular workpiece is positioned, and the clamping grooves on the inner sides of the two clamping jaws are used to support the annular workpiece protruding out of the loading chute outlet, to prevent the annular workpiece from deviating downward or falling off under the action of gravity when the pushing block pushes the annular workpiece out of the loading chute outlet, thereby ensuring the spatial position accuracy of each workpiece when it is transported to the processing station, and ensuring that it enters the processing station for processing with preset coordinates. The utility model has the advantage of ensuring the spatial position accuracy of the annular workpiece when it enters the processing station, thereby ensuring the processing accuracy.

[0011] Among them, the feeding mechanism is any existing transport mechanism for storing and transporting the stored workpieces to the required location, such as a vibrating plate, a silo, a conveyor belt, etc.; the first drive component may include any existing clamping mechanism used to enable the clamps to move relative to or synchronously; the second drive component may adopt any existing drive that can enable its own power output end to perform reciprocating linear motion, such as a cylinder or an electric push rod.

[0012] Preferably, a conveying trough is provided on the upper side of the upper material trough, and the conveying trough includes a lower section which opens downward and is connected to the upper material trough.

[0013] The annular workpieces stacked up and down and arranged radially can be placed in the lower section of the conveying trough, and loaded one by one by their own gravity and the push block, so that there is an annular workpiece in the loading trough each time. The conveying trough can be an upwardly open slot with a U-shaped cross section or an inner cavity with a cross section that matches the axial section of the annular workpiece.

[0014] Preferably, the conveying trough further comprises an upper section and an arc-shaped trough connected between the upper section and the lower section, and a straight vibrator is provided at the upper section of the conveying trough.

[0015] When the annular workpiece is located in the upper section of the conveying trough, the axis of the annular workpiece is in a vertical state. When passing through the arc groove, the axis of the workpiece changes from a vertical state to a horizontal state, and the workpiece changes from a lying state to an upright state. Compared with the method of positioning and conveying the annular workpiece in an upright state by using its own outer cylindrical surface contact, the speed of the annular workpiece stepping can be better controlled, thereby making it easier to control the feeding speed and prevent strong collisions between multiple annular workpieces and the inner wall of the arc groove of the conveying trough.

[0016] Preferably, the feeding trough is arranged in a feeding tube, and the end of the pushing block for contacting the annular workpiece in the feeding trough is always located in the feeding tube.

[0017] The cross section of the feeding tube 28 is the same as the cross section of the annular workpiece, the cross section of the push block can be the same as the cross section of the feeding tube, and the length of the push block can be greater than the length of the feeding tube.

[0018] When the push block is located in the feeding tube, the inner wall of the feeding tube limits the push block, and the push block can support the annular workpiece located in the conveying trough during the feeding process, preventing the annular workpiece from falling into the feeding trough when the previous annular workpiece is not pushed into place, and staying on the reset path of the push block, causing it to hinder the reset of the push block. Among them, since the cross-section of the feeding tube 28 is the same as the cross-section of the annular workpiece, the inner wall of the feeding tube 28 limits the falling annular workpiece and prevents it from tilting forward.

[0019] Preferably, an extension portion extending toward the upper feeding tube side is provided at the edge of the baffle, the baffle extension portion is fixed to the feeding tube, and the projection of the baffle along the axial direction of the feeding tube covers the feeding trough.

[0020] Compared with the method of installing and fixing the baffle on the working platform, the utility model fixes the baffle on the feeding pipe, which can make the device structure of the utility model more compact and occupy less space.

[0021] Preferably, the first drive assembly includes a first driver and a second driver, wherein the first driver is used to adjust the distance between the two clamping jaws, and the second driver is used to drive the two clamping jaws to move synchronously with the first driver. By providing two drivers, one driver is used to close the clamping jaws, and the other driver is used to translate the clamping jaws as a whole, so as to respectively realize the clamping and transfer of the workpiece, it is not necessary to use a driver that can freely switch between two strokes, and the cost is lower.

[0022] The utility model has the advantages of ensuring the axial position of the annular workpiece and being convenient for subsequent chamfering processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural schematic diagram of the utility model.

[0024] Figure 2 It is a structural schematic diagram of the pushing mechanism and the clamping claw mechanism of the utility model.

[0025] Figure 3 It is a structural schematic diagram of the clamping claw mechanism of the utility model.

[0026] In the figure: 11, first driver; 12, second driver; 13, unloading mechanism; 14, vibrating plate; 22, conveying trough; 23, jet pipe; 25, straight vibrator; 26, pushing block; 27, baffle; 28, feeding pipe; 29, cylinder; 36, fixed clamping jaw 36; 37, receiving trough; 38, clamping groove; 41, movable clamping jaw. DETAILED DESCRIPTION

[0027] The present invention will be further described below based on the accompanying drawings and specific embodiments.

[0028] Depend on Figure 1 As shown, this embodiment discloses a clamping and feeding device for chamfering of annular workpieces, including a clamping jaw mechanism, a feeding trough for connecting to the discharge end of the feeding mechanism, and a feeding mechanism 13 for feeding the annular workpiece. The clamping jaw mechanism includes a clamping jaw and a first driving component for moving the clamping jaw. The feeding trough is equipped with a pushing mechanism, and the pushing mechanism includes a pushing block 26 for extending into the feeding trough and a second driving component for moving the pushing block 26. The upper side of the feeding trough is connected to a conveying trough 22, and a baffle 27 is provided on the extending direction side of the feeding trough. Figure 2 As shown, the conveying trough 22 includes a lower section and an upper section which are open downward and connected to the upper material trough, and an arcuate trough connected between the upper section and the lower section. A straight vibrator 25 is provided at the upper section of the conveying trough 22, and an air injection pipe 23 is connected to the conveying trough 22.

[0029] The moving direction of the push block 26 is the same as the extension direction of the feeding trough under the action of the second driving assembly. There is a clearance space for the clamping jaws to pass through between the baffle 27 and the feeding tail end of the feeding trough. The moving direction of the clamping jaws under the action of the first driving assembly is perpendicular to the extension direction of the feeding trough. The adjacent parts of the two clamping jaws are provided with clamping grooves 38. When the clamping jaws move to the clearance space under the action of the first driving assembly, the clamping grooves 38 are aligned with the outlet of the feeding trough. When the annular workpiece needs to be fed, the feeding mechanism transfers the annular workpiece to the feeding trough, and the pushing mechanism enables the push block 26 located in the feeding trough to push the annular workpiece to between the baffle 27 and the end of the feeding trough through the second driving assembly.

[0030] The jetting direction of the jet pipe 23 is the same as the feeding direction in the conveying trough 22. The straight vibrator 25 and the jet pipe 23 have the same structure as the prior art, and prevent the annular workpiece from being retained in the conveying trough 22 during the conveying of the annular workpiece by vibration and jetting respectively.

[0031] The feeding trough is arranged in the feeding tube 28, and the cross section of the feeding tube 28 is the same as the cross section of the annular workpiece. The end of the push block 26 for contacting the annular workpiece in the feeding tube 28 is always located in the feeding tube 28, and the cross section of the push block 26 is the same as the cross section of the feeding tube 28. The second driving assembly includes a cylinder 29, and the push block 26 is fixedly arranged at the power output end of the cylinder 29, and the push block 26 passes through both axial sides of the feeding tube 28.

[0032] Depend on Figure 3As shown, the clamp includes a fixed clamp 36 and a movable clamp 41, and the first driving component includes a first driver 11 and a second driver 12. The first driver 11 is used to adjust the distance between the fixed clamp 36 and the movable clamp 41, and the second driver 12 is used to drive the fixed clamp 36 and the movable clamp 41 to move synchronously with the first driver 11. The movable clamp 41 is fixed on the moving end of the first driver 11, the fixed clamp 36 is fixed on one side of the moving end of the second driver 12, and the first driver 11 is fixed on the other side of the moving end of the second driver 12, so that the fixed clamp 36 and the movable clamp 41 are arranged opposite to each other along the moving direction of the moving end of the second driver 12.

[0033] When the first driving member drives the fixed jaw 36 and the movable jaw 41 to move synchronously, and then drives the annular workpiece that cannot be stably clamped to move, the annular workpiece separates from the fixed jaw 36 and the movable jaw 41 under the action of inertia, and falls into the receiving trough 37 in a free fall manner. The above process is used to screen annular workpieces of different specifications.

[0034] A receiving groove 37 opening upward is provided below the fixed jaw 36. The receiving groove 37 is inclined, and the upper end of the receiving groove 37 is adjacent to the clamping groove of the fixed jaw 36. The lower end of the receiving groove 37 extends away from the fixed jaw 36 and is located below the movable jaw 41. If the annular workpiece clamped by the jaws is a defective product that is broken or does not meet the requirements of size, the control program can be set to loosen the jaws so that the defective product can fall into the receiving groove as soon as possible.

[0035] When the annular workpiece needs to be loaded, the vibration plate 14 transfers the annular workpiece to the conveying trough 22 , and the annular workpiece slides along the conveying trough 22 into the loading pipe 28 under the action of the straight vibrator 25 and the air injection pipe 23 . During this process, when the annular workpiece is located in the upper end of the conveying trough 22, the axis of the annular workpiece is in a vertical state. When it passes through the arc groove of the conveying trough 22 and moves to the lower end of the conveying trough 22, it becomes a horizontal state, that is, the workpiece changes from a lying state to an upright state. At this time, the annular workpiece falls into the feeding tube 28 under the action of gravity and is located in front of the push block. The push block 26 pushes the annular workpiece between the baffle 27 and the end of the feeding tube 28 by the cylinder 29. At this time, the push block 26 restricts the annular workpiece by pressing against the baffle 27, thereby realizing the axial limit of the annular workpiece. Then, the first driving member drives the fixed jaw 36 and the moving jaw 41 to move synchronously to a closed state to clamp the annular workpiece, so as to limit the radial position of the annular workpiece, and further limit the axial position of the annular workpiece. The fixed jaw 36 and the moving jaw 41 leave the clearance space under the action of the second driver 12 and move the annular workpiece to the set position. When the push block 26 is reset, the subsequent annular workpiece to be processed that is blocked by the upper surface of the push block 26 falls.

Claims

1. A clamping and feeding device for chamfering an annular workpiece, comprising a clamping mechanism and a feeding trough connected to a discharge end of a feeding mechanism, wherein the clamping mechanism comprises a clamping jaw and a first driving component for moving the clamping jaw, and the feeding trough is equipped with a pushing mechanism, wherein the pushing mechanism comprises a pushing block for extending into the feeding trough and a second driving component for moving the pushing block, characterized in that: The moving direction of the pushing block is the same as the extension direction of the loading chute, and a baffle is provided on the extension direction side of the loading chute, and a clearance space for the clamping jaws to pass through is provided between the baffle and the end of the loading chute. The moving direction of the clamping jaws under the action of the first driving component is perpendicular to the extension direction of the loading chute, and clamping grooves are provided at adjacent positions of the two clamping jaws. When the clamping jaws move to the clearance space under the action of the first driving component, the clamping grooves are aligned with the outlet of the loading chute.

2. The clamping and feeding device for chamfering of an annular workpiece according to claim 1, characterized in that: A conveying trough is connected to the upper side of the upper material trough, and the conveying trough includes a lower section which opens downward and is connected to the upper material trough.

3. The clamping and feeding device for chamfering of an annular workpiece according to claim 2, characterized in that: The conveying trough also includes an upper section and an arc-shaped trough connected between the upper section and the lower section. A straight vibrator is provided at the upper section of the conveying trough. When passing through the arc-shaped trough, the axis of the workpiece changes from vertical to horizontal, and the workpiece changes from a lying state to an upright state.

4. The clamping and feeding device for chamfering of an annular workpiece according to claim 1, characterized in that: The feeding trough is arranged in the feeding tube, and one end of the pushing block which is used for contacting the annular workpiece in the feeding trough is always located in the feeding tube.

5. The clamping and feeding device for chamfering of an annular workpiece according to claim 1, characterized in that: The edge of the baffle is provided with an extension portion extending toward the upper feeding tube side, the baffle extension portion is fixed to the feeding tube, and the projection of the baffle along the axial direction of the feeding tube covers the feeding trough.

6. The clamping and feeding device for chamfering of an annular workpiece according to claim 1, characterized in that: The first driving assembly includes a first driver and a second driver, wherein the first driver is used to adjust the distance between the two clamping jaws, and the second driver is used to drive the two clamping jaws to move synchronously with the first driver.

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