Bearing lathe loading device and bearing automatic lathe

Abstract

A bearing lathe loading device and a bearing automatic lathe relate to the technical field of bearing processing. The bearing lathe loading device includes a blanking mechanism for dropping workpieces one by one; a workpiece sleeve for receiving workpieces dropped from the blanking mechanism; a swing arm connected to the workpiece sleeve and used to drive the workpiece sleeve to swing to one side of an alignment chuck or to the end of the blanking mechanism; a pushing mechanism mounted on the swing arm and used to push the workpiece from the workpiece sleeve into the chuck; and a limiting mechanism for blocking the swing arm when the swing arm drives the workpiece sleeve to swing to one side of the alignment chuck, and for blocking the swing arm when the swing arm drives the workpiece sleeve to swing to the end of the alignment chuck. The present invention can achieve accurate and rapid loading of bearings using more reliable and simpler control logic.

Description

Technical Field

[0001] The present invention relates to the technical field of bearing processing, in particular to a bearing lathe loading device and a bearing automatic lathe. Background Art

[0002] Bearing turning is a crucial step in the production process. Traditionally, bearings are manually loaded into a fixture, then ground by a tool, resulting in very low efficiency. Existing loading methods utilize precision robotic arms that perform multiple operations, resulting in complex equipment structures, high costs, and significant maintenance challenges.

[0003] Chinese patent CN201239801Y discloses a loading mechanism for a bearing lathe, which pushes the bearing to one side of a fixture through a vertical cylinder, and then pushes the bearing into the fixture through a horizontal cylinder to cooperate with the fixture to clamp the bearing. Since there is uncertainty in the telescopic control of the cylinder piston rod, this solution requires the use of a measuring rod and a proximity switch to form a set of sensor systems to sense whether the bearing is loaded in place, and then control the vertical cylinder to stop the action. This means that debugging is more difficult, and the coordination between the sensors needs to maintain extremely high accuracy. Otherwise, it is easy for the vertical cylinder to push the workpiece displacement to deviate and fail to load. Therefore, this loading method is not reliable enough. In addition, before performing the above-mentioned loading action, it is necessary to manually or use an additional manipulator to first load the bearing into the feeding ring. It can be seen that this set of loading mechanism still has a certain degree of complexity in the control logic. Summary of the Invention

[0004] One of the purposes of the present invention is to provide a bearing lathe loading device that can achieve accurate and rapid loading of bearings based on more reliable and simpler control logic.

[0005] In order to solve the above technical problems, the present invention adopts the following technical solutions: a loading device for a bearing lathe, comprising a blanking mechanism for dropping workpieces one by one; a workpiece sleeve for receiving the workpieces dropped from the blanking mechanism; a swing arm connected to the workpiece sleeve and used to drive the workpiece sleeve to swing to one side of the alignment chuck or to the end of the alignment blanking mechanism; a pushing mechanism installed on the swing arm and used to push the workpiece from the workpiece sleeve into the chuck; a limiting mechanism for blocking the swing arm when the swing arm drives the workpiece sleeve to swing to one side of the alignment chuck, and for blocking the swing arm when the swing arm drives the workpiece sleeve to swing to the end of the alignment blanking mechanism.

[0006] The workpiece sleeve is a semi-annular sleeve structure with an open top, and an elastic baffle is hinged on the swing arm. The elastic baffle is used to press on the workpiece in the workpiece sleeve after the workpiece sleeve leaves the end of the blanking mechanism and can move away from the workpiece sleeve when the workpiece sleeve is aligned with the end of the blanking mechanism.

[0007] Preferably, a torsion spring is connected to the middle part of the elastic baffle, and the bottom end of the elastic baffle can be pressed downward on the workpiece in the workpiece sleeve under the action of the torsion spring. A limit block is also provided above the upper part of the elastic baffle. When the swing arm drives the workpiece sleeve to swing upward to align with the end of the blanking mechanism, the limit block can abut against the upper part of the elastic baffle and lift the bottom end of the elastic baffle to move away from the workpiece sleeve.

[0008] Furthermore, the pushing mechanism includes a pushing rod arranged on one side of the workpiece sleeve, a small rocker arm hinged to the pushing rod, and a micro cylinder for pushing the small rocker arm. The middle part of the small rocker arm is hinged to the swing arm, and the bottom end is hinged to the pushing rod. The micro cylinder is installed on the swing arm and can push the upper part of the small rocker arm, so that the swing of the small rocker arm drives the pushing rod to push the workpiece of the workpiece sleeve into the chuck. A compression spring is connected between the lower part of the small rocker arm and the swing arm to reset the small rocker arm.

[0009] A limiting member is also installed on the swing arm, and the limiting member is used to block the small rocker arm when the micro cylinder pushes the small rocker arm to swing a certain angle.

[0010] Preferably, the limiting mechanism includes a limiting column installed at the upper end of the swing arm and a first stop block and a second stop block arranged on one side of the upper part of the swing arm; when the swing arm drives the workpiece sleeve to swing to one side of the alignment chuck, the limiting column abuts against the first stop block, and when the swing arm drives the workpiece sleeve to swing to the end of the alignment blanking mechanism, the limiting column abuts against the second stop block.

[0011] More preferably, two induction switches are further provided on one side of the upper end of the swing arm, and when the limit column moves to two extreme positions, one end of the limit column can correspond to the positions of the two induction switches respectively.

[0012] In addition, the present invention also provides a bearing automatic lathe, which includes the above-mentioned bearing lathe loading device, and also includes a bed, a spindle installed on the bed and a chuck connected to the spindle, and a tool holder installed on the bed and movable. The spindle is arranged in a spindle box, and a rotating shaft is installed on the upper part of the spindle box. One end of the rotating shaft is connected to the upper part of the swing arm, and the rotating shaft is connected to a driving mechanism for driving it to rotate. A unloading chute is also provided under the swing arm.

[0013] Preferably, the tool holder is provided with a plurality of tools for performing different types of processing on the workpiece.

[0014] More preferably, the blanking mechanism comprises a blanking chute obliquely mounted on the side wall of the spindle box, and a valve is provided at the end of the blanking chute.

[0015] By setting a limit mechanism to limit the movement of the swing arm, it can be exactly aligned with one side of the chuck or the end of the blanking mechanism when it swings to the two extreme positions. There is no need to rely on the judgment of the sensor to control the movement of the swing arm. On the one hand, it reduces the complexity of the device, and on the other hand, it reduces errors and improves the reliability of loading. Compared with the existing bearing lathe loading mechanism, this loading device can realize accurate and fast loading of bearings based on more reliable and simpler control logic. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 Schematic diagram of the overall structure of the automatic bearing lathe in an embodiment of the present invention;

[0017] Figure 2 Schematic diagram of the structure of the loading device of the bearing lathe in an embodiment of the present invention;

[0018] Figure 3 This is a schematic diagram of the embodiment of the bearing lathe loading device when the swing arm swings downward to the limit position;

[0019] Figure 4 It is a schematic diagram of the case where the swing arm of the loading device of the bearing lathe in the embodiment swings upward to the limit position.

[0020] The accompanying drawings are:

[0021] 1——Workpiece sleeve 2——Swing arm 3——Elastic baffle

[0022] 4——Limiting block 5——Ejector rod 6——Small rocker arm

[0023] 7——Micro cylinder 8——Limiting piece 9——Limiting column

[0024] 10——first stopper 11——second stopper 12——bed

[0025] 13——Spindle 14——Tool holder 15——Rotating shaft

[0026] 16——Discharge chute 17——Drop chute 18——Compression spring

[0027] 19——Spindle box. DETAILED DESCRIPTION

[0028] In order to facilitate understanding by those skilled in the art, the present invention will be further described below with reference to embodiments and drawings. The contents mentioned in the embodiments are not intended to limit the present invention.

[0029] It should be noted in advance that, in the present invention, unless otherwise expressly specified or limited, the terms "installed," "connected," "connected," "fixed," etc. should be understood broadly. For example, they may refer to fixed connection, detachable connection, or integral connection; they may refer to direct connection, indirect connection through an intermediate medium, or internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0030] like Figure 2-4 As shown, the loading device of the bearing lathe and the bearing automatic lathe, the blanking mechanism, is used to drop the workpieces one by one; the workpiece sleeve 1, is used to receive the workpieces dropped from the blanking mechanism; the swing arm 2, is connected to the workpiece sleeve 1 and is used to drive the workpiece sleeve 1 to swing to one side of the alignment chuck or to the end of the alignment blanking mechanism; the pushing mechanism, is installed on the swing arm 2 and is used to push the workpiece from the workpiece sleeve 1 into the chuck; the limiting mechanism is used to block the swing arm 2 when the swing arm 2 drives the workpiece sleeve 1 to swing to one side of the alignment chuck, and is used to block the swing arm 2 when the swing arm 2 drives the workpiece sleeve 1 to swing to the end of the alignment blanking mechanism.

[0031] Among them, the workpiece sleeve 1 is a semi-annular sleeve structure with an open top, and an elastic baffle 3 is hinged on the swing arm 2. The elastic baffle 3 is used to press on the workpiece in the workpiece sleeve 1 after the workpiece sleeve 1 leaves the end of the blanking mechanism and can move away from the workpiece sleeve 1 when the workpiece sleeve 1 is aligned with the end of the blanking mechanism.

[0032] Specifically, a torsion spring is connected to the middle of the elastic baffle 3. Under the action of the torsion spring, the bottom end of the elastic baffle 3 can be pressed downward on the workpiece in the workpiece sleeve 1. A limit block 4 is also provided above the upper portion of the elastic baffle 3. When the swing arm 2 drives the workpiece sleeve 1 to swing upward to the end of the alignment blanking mechanism, the limit block 4 can abut against the upper portion of the elastic baffle 3 and lift the bottom end of the elastic baffle 3 away from the workpiece sleeve 1. In actual application, the limit block 4 can be configured as a roller structure. The roller is stationary but can rotate itself, so that the sliding friction between the limit block 4 and the elastic baffle 4 during contact is changed to rolling friction, reducing the wear on the elastic baffle 4.

[0033] The pushing mechanism includes a pushing rod 5 arranged on one side of the workpiece sleeve 1, a small rocker arm 6 hinged to the pushing rod 5 and a micro cylinder 7 for pushing the small rocker arm 6. The middle part of the small rocker arm 6 is hinged to the swing arm 2, and the bottom end is hinged to the pushing rod 5. The micro cylinder 7 is installed on the swing arm 2 and can push the upper part of the small rocker arm 6, so that the swing of the small rocker arm 6 drives the pushing rod 5 to push the workpiece of the workpiece sleeve 1 into the chuck. A compression spring 18 is connected between the lower part of the small rocker arm 6 and the swing arm 2 to reset the small rocker arm 6.

[0034] On the basis of the above, a limit member 8 is further installed on the swing arm 2. The limit member 8 is used to block the small rocker arm 6 when the micro cylinder 7 pushes the small rocker arm 6 to swing a certain angle.

[0035] The limiting mechanism includes a limiting column 9 installed at the upper end of the swing arm 2 and a first stop block 10 and a second stop block 11 arranged on one side of the upper part of the swing arm 2; when the swing arm 2 drives the workpiece sleeve 1 to swing to one side of the alignment chuck, the limiting column 9 abuts against the first stop block 10, and when the swing arm 2 drives the workpiece sleeve 1 to swing to the end of the alignment blanking mechanism, the limiting column 9 abuts against the second stop block 11.

[0036] On the basis of the above, two induction switches are further provided on one side of the upper end of the swing arm 2. When the limit post 9 moves to the two extreme positions, one end of the limit post 9 can correspond to the position of the two induction switches. Those skilled in the art will appreciate that the induction switch can be any common induction switch in the prior art. The specific form of the induction switch is not limited here, as long as it can be used to sense when the limit post 9 reaches the extreme position and generate a signal to transmit to the system, thereby allowing the system to perform the next instruction operation.

[0037] In addition, this embodiment also provides a bearing automatic lathe, such as Figure 1 As shown, it includes the above-mentioned bearing lathe loading device, and also includes a bed 12, a spindle 13 installed on the bed 12 and a chuck connected to the spindle 13, and a tool holder 14 installed on the bed 12 and movable. The spindle 13 is arranged in a spindle box 14, and a rotating shaft 15 is installed on the upper part of the spindle box 14. One end of the rotating shaft 15 is connected to the upper part of the swing arm 2, and the rotating shaft 15 is connected to a driving mechanism for driving it to rotate. A discharge chute 16 is also provided under the swing arm 2.

[0038] The tool holder 14 is provided with a plurality of tools (not specifically shown in the drawings) for performing different types of machining on a workpiece. The tool holder 14 can be mounted on a slide that can move in the forward, backward, left, and right directions. The method for achieving such movement is a common structure in the prior art and will not be difficult for those skilled in the art to understand, so a detailed description thereof will not be given.

[0039] Preferably, the blanking mechanism includes a blanking trough 17 obliquely mounted on the side wall of the spindle box 14, and a valve is provided at the end of the blanking trough 17. Those skilled in the art should know that there are many ways to implement the blanking trough 17 to blank materials one by one. For example, two valves can be set so that after the first valve is opened, a workpiece enters the preparation station, and then the first valve is closed, and then the second valve is opened, and the workpiece is blanked. Alternatively, a common ultrasonic blanking device can be used to achieve blanking, which will not be described in detail in this embodiment.

[0040] The working principle of the bearing automatic lathe provided in the above embodiment is: the bearing workpieces are lined up in the blanking mechanism waiting for blanking, and the position of the workpiece sleeve 1 is aligned with the end of the blanking mechanism (such as Figure 4 As shown), after a workpiece falls into the workpiece sleeve 1, the blanking mechanism valve is closed, and the swing arm 2 swings downward, driving the workpiece sleeve 1 and the workpiece to move downward until the limit column 9 at the top of the swing arm 2 abuts against the first stop block 10 and stops swinging. At this time, the workpiece sleeve 1 is aligned with one side of the chuck (as shown). Figure 3 As shown in FIG, the elastic baffle 3 at this time is pressed on the workpiece in the workpiece sleeve 1 by the action of the torsion spring, keeping the workpiece stable, and then the pushing mechanism responds quickly, and the micro cylinder 7 pushes the small rocker arm 6 to swing, so that the bottom end of the small rocker arm 6 pushes the pushing rod 5, and then one end of the pushing rod 5 pushes the workpiece in the workpiece sleeve 1, so that the workpiece moves along its axial direction and enters the center of the chuck, and the chuck can clamp the workpiece, and then the micro cylinder 7 retreats, and the small rocker arm 6 swings in the opposite direction under the action of the compression spring 18, so that its bottom end drives the pushing rod 5 to reset, so that the workpiece sleeve 1 vacates its position, and then the swing arm 2 swings upward, driving the workpiece sleeve 1 to move upward, until the limit column 9 at the top of the swing arm 2 abuts against the second stop block 11 and stops swinging. At this time, the workpiece sleeve 1 is just aligned with the end of the blanking mechanism (as shown in FIG. Figure 4 As shown), the next workpiece is waiting to fall in. During the upward swing of the swing arm 2, the elastic baffle 3 will also swing upward as a whole. However, due to the blocking effect of the upper limit block 4, the upper part of the elastic baffle 3 is equivalent to being subjected to a downward force, so that the lower end of the elastic baffle 3 is tilted upward to move away from the workpiece sleeve 1, thereby opening the upper end of the workpiece sleeve 1 to facilitate the workpiece to enter the workpiece sleeve 1 and start the next loading cycle.

[0041] After loading, the chuck clamps the workpiece, and the spindle 13 drives the chuck to rotate at high speed, allowing the tool to move into contact with the workpiece for grinding. A variety of different tools can be used to perform different types of processing on the workpiece, such as machining the inner ring of a bearing or groove forming the inner ring of a bearing. After processing is completed, the tool is retracted, and the chuck releases the workpiece, allowing it to fall downward under its own gravity into the discharge chute 16 for unloading. At this point, the loading device can quickly load the next workpiece into the chuck.

[0042] Those skilled in the art should know that the middle portion of the elastic baffle 3 is hinged to the swing arm 2, so that when the swing arm 2 swings upward, the elastic baffle 3 is affected by the limit block 4, causing its lower end to swing upward and the swing path is an arc-shaped route. This allows the workpiece sleeve 1 to be aligned with the end of the blanking mechanism, and the lower end of the elastic baffle 3 can completely swing upward to a position that avoids the end of the blanking mechanism without interfering with or blocking the workpiece from falling into the workpiece sleeve 1. In the process of the swing arm 2 swinging downward, the lower end of the elastic baffle 3 will gradually approach the workpiece sleeve 1 until it is pressed on the workpiece. Although the elastic baffle 3 will not immediately press on the workpiece during this process, there is no need to worry about the workpiece falling out during this period, because the swing arm 2 swings at a relatively fast speed and can drive the workpiece to swing into place in a very short time, so that the elastic baffle 3 can also immediately press on the workpiece to maintain the stability of the workpiece.

[0043] It should also be noted that the timing of the above-mentioned chuck clamping the workpiece can be set to several seconds after the limit column 9 abuts against the first stop block 10, because the pushing action will be performed immediately when the limit column 9 abuts against the first stop block 10, so it can be determined that the workpiece has been pushed into the chuck after several seconds. Of course, those skilled in the art can also set conventional sensors in the chuck to sense whether the workpiece has entered, and then perform clamping and other subsequent actions. Those skilled in the art will not have any technical difficulty in determining the response timing between these processing steps and performing specific implementations. Since the invention point of this application mainly lies in the structure of the loading device, the instructions between these processing actions will not be repeated.

[0044] The above embodiments are preferred implementation schemes of the present invention. In addition, the present invention can also be implemented in other ways. Any obvious replacement without departing from the concept of the present technical solution is within the scope of protection of the present invention.

[0045] In order to make it easier for those skilled in the art to understand the improvements of the present invention over the prior art, some drawings and descriptions of the present invention have been simplified, and for the sake of clarity, some other elements have been omitted in this application document. Those skilled in the art should realize that these omitted elements may also constitute the content of the present invention.

Claims

1. Bearing lathe loading device, characterized in that, include: Dropping mechanism, used to drop workpieces one by one; A workpiece sleeve (1) for receiving a workpiece dropped from the blanking mechanism; A swing arm (2) is connected to the workpiece sleeve (1) and is used to drive the workpiece sleeve (1) to swing to one side of the alignment chuck or to the end of the alignment blanking mechanism; A pusher mechanism, mounted on the swing arm (2) and used to push the workpiece from the workpiece sleeve (1) into the chuck; a limiting mechanism for blocking the swing arm (2) when the swing arm (2) drives the workpiece sleeve (1) to swing to one side aligned with the chuck, and for blocking the swing arm (2) when the swing arm (2) drives the workpiece sleeve (1) to swing to an end aligned with the blanking mechanism; The limiting mechanism comprises a limiting column (9) mounted on the upper end of the swing arm (2) and a first stopper (10) and a second stopper (11) arranged on one side of the upper portion of the swing arm (2); when the swing arm (2) drives the workpiece sleeve (1) to swing to one side of the alignment chuck, the limiting column (9) abuts against the first stopper (10); and when the swing arm (2) drives the workpiece sleeve (1) to swing to the end of the alignment blanking mechanism, the limiting column (9) abuts against the second stopper (11); The workpiece sleeve (1) is a semi-annular sleeve structure with an open top, and an elastic baffle (3) is hinged on the swing arm (2), and the elastic baffle (3) is used to press on the workpiece in the workpiece sleeve (1) after the workpiece sleeve (1) leaves the end of the blanking mechanism and can be away from the workpiece sleeve (1) when the workpiece sleeve (1) is aligned with the end of the blanking mechanism; The middle part of the elastic baffle (3) is connected to a torsion spring, and the bottom end of the elastic baffle (3) can be pressed downward on the workpiece in the workpiece sleeve (1) under the action of the torsion spring. A limit block (4) is also provided above the upper part of the elastic baffle (3). When the swing arm (2) drives the workpiece sleeve (1) to swing upward to the end of the alignment blanking mechanism, the limit block (4) can abut against the upper part of the elastic baffle (3) and lift the bottom end of the elastic baffle (3) away from the workpiece sleeve (1); The pushing mechanism includes a pushing rod (5) arranged on one side of the workpiece sleeve (1), a small rocker arm (6) hinged to the pushing rod (5), and a micro cylinder (7) for pushing the small rocker arm (6), wherein the middle part of the small rocker arm (6) is hinged to the swing arm (2), and the bottom end is hinged to the pushing rod (5), the micro cylinder (7) is installed on the swing arm (2) and can push the upper part of the small rocker arm (6), so that the swing of the small rocker arm (6) drives the pushing rod (5) to push the workpiece of the workpiece sleeve (1) into the chuck, and a compression spring (18) is connected between the lower part of the small rocker arm (6) and the swing arm (2) for resetting the small rocker arm (6).

2. The bearing lathe loading device according to claim 1, characterized in that: A limiting member (8) is also installed on the swing arm (2), and the limiting member (8) is used to block the small rocker arm (6) when the micro cylinder (7) pushes the small rocker arm (6) to swing a certain angle.

3. The bearing lathe loading device according to claim 1, characterized in that: Two induction switches are also provided on one side of the upper end of the swing arm (2), and when the limit column (9) moves to two extreme positions, one end of the limit column (9) can correspond to the positions of the two induction switches respectively.

4. A bearing automatic lathe, comprising the bearing lathe loading device according to any one of claims 1 to 3, characterized in that: The machine tool further comprises a bed (12), a spindle (13) mounted on the bed (12), a chuck connected to the spindle (13), and a tool holder (14) mounted on the bed (12) and movable. The spindle (13) is arranged in a spindle box (19), a rotating shaft (15) is mounted on the upper part of the spindle box (19), one end of the rotating shaft (15) is connected to the upper part of the swing arm (2), the rotating shaft (15) is connected to a driving mechanism for driving the rotating shaft (15) to rotate, and a discharge chute (16) is also provided below the swing arm (2).

5. The automatic bearing lathe according to claim 4, characterized in that: The tool holder (14) is provided with a plurality of tools for performing different types of processing on workpieces.

6. The automatic bearing lathe according to claim 5, characterized in that: The blanking mechanism comprises a blanking chute (17) obliquely mounted on the side wall of the spindle box (19), and a valve is provided at the end of the blanking chute (17).

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