Device with multi-station automatic feeding and discharging and precise workpiece positioning functions

Abstract

The invention discloses a device with multi-station automatic feeding and discharging and precise workpiece positioning functions. The device comprises a main body platform mechanism, an automatic pushing mechanism, a first automatic precise workpiece positioning mechanism, a second automatic precise workpiece positioning mechanism and a discharging buffering mechanism. According to the invention, two workpieces can be automatically transferred from a feeding buffer station to a processing station, the concentricity of the two workpieces and a boring cutter of a main shaft is automatically realized, the workpieces of different specifications are processed, an annular clamp does not need to be replaced, the two workpieces are automatically transferred from the processing station to a discharging buffer station after the workpieces are pressed by a boring machine and the processing is finished, and the processing efficiency is improved. The device is particularly suitable for being integrated on a full-automatic machining production line, and unattended operation and continuous machining in the machining process are achieved. The technical problems that manual feeding and discharging and manual equipment operation are high in labor intensity and low in efficiency, palms of workers are frequently damaged, and annular clamps of different specifications need to be replaced when workpieces of different specifications are machined can be effectively solved.

Description

Technical Field

[0001] The invention belongs to the technical field of mechanical processing, and in particular to a device with the functions of multi-station automatic loading and unloading and precise positioning of workpieces. Background Art

[0002] The vertical twin-axis boring machine is a common cutting processing equipment with two stations and two processing spindles. It can bore the inner holes of two workpieces at the same time. The contour of the workpiece is usually cylindrical (i.e., hollow cylindrical). There are two processing stations under the spindle of the vertical twin-axis boring machine. The processing stations usually have two annular fixtures with circular grooves to position the workpiece to be processed (to ensure that the workpiece is concentric with the boring cutter of the spindle). Manual loading and unloading and manual operation of the equipment are required, that is, the workpiece needs to be placed in the circular groove of the annular fixture manually, the boring machine needs to be operated to press the workpiece, the equipment needs to be operated to perform boring processing, and the workpiece needs to be taken out manually after processing is completed. Manual loading and unloading and manual operation of equipment are not only labor-intensive and inefficient, but also frequently damage the workers' palms. In addition, different specifications of workpieces need to be processed, and different specifications of annular fixtures need to be replaced.

[0003] In view of the above problems, there is an urgent need to propose a device with the functions of automatic loading and unloading and precise positioning of workpieces in multiple stations, especially a device that replaces manual loading and unloading and replaces manual operation equipment, and can realize the following functions: the workpiece is automatically transferred from the feeding buffer station to the processing station, the workpiece and the boring cutter of the spindle are automatically concentric, and workpieces of different specifications do not need to be replaced with annular clamps. The boring machine is automatically controlled to press the workpiece. After the boring machine is processed, the workpiece is automatically transferred from the processing station to the unloading buffer station, realizing unattended and continuous processing. Summary of the invention

[0004] The purpose of the present invention is to provide a device with the functions of multi-station automatic loading and unloading and precise positioning of workpieces in response to the above-mentioned problems in the prior art and actual needs.

[0005] The technical solution to achieve the purpose of the present invention is: a device with multi-station automatic loading and unloading and precise positioning of workpieces, applied to the vertical double-axis boring machine, the device is used to achieve: two workpieces are automatically transferred from the feeding cache station to the processing station, the two workpieces are automatically concentric with the boring cutter of the spindle, and workpieces of different specifications are processed without changing the annular fixture. The boring machine presses the workpiece and completes the processing, and the two workpieces are automatically transferred from the processing station to the unloading cache station;

[0006] The device includes a main platform mechanism, an automatic pushing mechanism, a first automatic precision workpiece positioning mechanism, a second automatic precision workpiece positioning mechanism and a material unloading cache mechanism; the main platform mechanism is installed on a vertical dual-axis boring machine; the automatic pushing mechanism is installed on the main platform mechanism, and is used to push the workpiece of the feeding cache station to the processing station; the first automatic precision workpiece positioning mechanism is installed on the main platform mechanism, and is used to precisely position the workpiece of the processing station to the target position, that is, the position concentric with the spindle boring tool, so as to ensure the clamping accuracy required by the processing technology; the second automatic precision workpiece positioning mechanism has the same function as the first automatic precision workpiece positioning mechanism, and only the installation position is different; the material unloading cache mechanism is installed on the main platform mechanism, and the automatic pushing mechanism pushes the processed workpiece to the material unloading cache mechanism.

[0007] Furthermore, the main platform mechanism includes a boring machine table, a first material detection sensor, a second material detection sensor, a first sensor bracket and a second sensor bracket; the boring machine table is connected to the bed of the vertical dual-axis boring machine; the first sensor bracket and the second sensor bracket are both installed on the boring machine table; the first material detection sensor is installed on the first sensor bracket to detect whether there is a workpiece; the second material detection sensor is installed on the second sensor bracket to detect whether there is a workpiece;

[0008] The area above the boring machine table and the overlapping area directly in front of the first material detection sensor are used as the first feeding cache station; the area above the boring machine table and the overlapping area directly in front of the second material detection sensor are used as the second feeding cache station; the area above the boring machine table and the overlapping area below the first spindle of the vertical twin-axis boring machine are used as the first processing station; the area above the boring machine table and the overlapping area below the second spindle of the vertical twin-axis boring machine are used as the second processing station.

[0009] Furthermore, the automatic material pushing mechanism includes a thrust cylinder, a thrust cylinder bracket, an active transition plate, a driven transition plate, a guide rail bracket, a linear guide rail assembly, a first sliding bearing, a second sliding bearing, a synchronous mandrel, a rotary cylinder and a material push rod assembly; the thrust cylinder is installed on the boring machine table, the active transition plate is installed on the moving slide block of the thrust cylinder, and the thrust cylinder can push the active transition plate to perform linear motion; the driven transition plate, under the push of the active transition plate, performs linear motion;

[0010] The guide rail bracket is installed on the boring machine table; the linear guide rail assembly includes a linear guide rail and two sliders installed on the guide rail, wherein the linear guide rail is installed on the guide rail bracket, and the first sliding bearing and the second sliding bearing are installed on the two sliders respectively; the synchronous mandrel is connected and installed with the first sliding bearing and the second sliding bearing, and the synchronous mandrel rotates around the common axis of the first sliding bearing and the second sliding bearing;

[0011] The first sliding bearing, driven by the driven transition plate, moves linearly along the linear guide rail; the synchronous mandrel, driven by the first sliding bearing, moves linearly along the linear guide rail; the second sliding bearing, driven by the synchronous mandrel, always maintains the same distance with the first sliding bearing;

[0012] The rotary cylinder is used to drive the synchronous mandrel to rotate at a certain angle, and can rotate forward and reverse;

[0013] The material shifting rod assembly is mounted on the synchronous mandrel and is used to push the workpiece in the feeding buffer station to the processing station.

[0014] Furthermore, the material shifting rod assembly includes a first material shifting rod, a second material shifting rod, a third material shifting rod and a fourth material shifting rod; the synchronous core shaft rotates forward to change the horizontal first material shifting rod, the second material shifting rod, the third material shifting rod and the fourth material shifting rod into a vertical state; the synchronous core shaft rotates reversely to restore the vertical first material shifting rod, the second material shifting rod, the third material shifting rod and the fourth material shifting rod to a horizontal state.

[0015] Furthermore, the first feeding and buffering station is used to place the first workpiece, and under the push of the first material shifting rod, it slides from left to right to the first processing station; the second feeding and buffering station is used to place the second workpiece, and under the push of the second material shifting rod, it slides from left to right to the second processing station; the automatic pushing mechanism performs a second push, and the first workpiece slides from left to right to the first unloading cache station under the second push of the first material shifting rod; the second workpiece slides from left to right to the second unloading cache station under the second push of the second material shifting rod.

[0016] Furthermore, if the first material detection sensor of the main platform mechanism detects that there is a workpiece at the first feeding cache station, and the second material detection sensor detects that there is a workpiece at the second feeding cache station, the thrust cylinder of the automatic pushing mechanism pushes to the right, and the four material levers move accordingly, wherein the first material lever pushes the workpiece of the first feeding cache station to the first processing station, the second material lever pushes the workpiece of the second feeding cache station to the second processing station, the third material lever pushes the workpiece of the first processing station to the first unloading cache station, and the fourth material lever pushes the workpiece of the second processing station to the second unloading cache station, wherein the four material levers move synchronously, and the distance between the four material levers is constant, and the workpieces will not interfere with each other during the pushing process, thereby achieving the goal of pushing four workpieces to the right station each time.

[0017] Furthermore, the first automatic precision positioning workpiece mechanism includes a position adjustment component, a pneumatic slide component and a clamping and centering component; the clamping and centering component is used to form a virtual circular space to clamp the workpiece on the processing station, and the position adjustment component is used to adjust the position accuracy of the virtual circle of the clamping and centering component; the pneumatic slide component is used to control the forward and backward movements of the clamping and centering component.

[0018] Furthermore, the position adjustment assembly includes a position adjustment plate, a first threaded block, a second threaded block, a third threaded block, a fourth threaded block, a first fine-tuning screw, a second fine-tuning screw, a third fine-tuning screw and a fourth fine-tuning screw; the position adjustment plate is installed on the boring machine table and allows fine-tuning of the position before being completely locked with the boring machine table; four threaded blocks are fixed on the boring machine table, and four fine-tuning screws respectively pass through the threaded holes of the threaded blocks with corresponding numbers; by rotating the fine-tuning screws, the position of the position adjustment plate can be fine-tuned.

[0019] Furthermore, the clamping and centering assembly includes a clamping jaw connecting plate, a clamping jaw cylinder, a left clamping jaw finger, a right clamping jaw finger, a first ball bearing, a second ball bearing, a third ball bearing and a fourth ball bearing; the clamping jaw connecting plate is installed on the end plate of the pneumatic slide assembly, so that the entire clamping and centering assembly follows the extension and contraction action of the pneumatic slide assembly to produce forward and backward actions; the clamping jaw cylinder has two symmetrical clamping blocks, which are respectively used to install the left clamping jaw finger and the right clamping jaw finger, and the left clamping jaw finger and the right clamping jaw finger can follow the clamping jaw cylinder to perform symmetrical clamping actions; the right clamping jaw finger is installed with a first ball bearing and a second ball bearing; the left clamping jaw finger is installed with a third ball bearing and a fourth ball bearing; the clamping jaw cylinder applies a certain clamping force to the left clamping jaw finger and the right clamping jaw finger. Under the action of the clamping force, the cut edges of the four ball bearings are all tangent to the circular workpiece, the diameter of the circular workpiece changes within a certain range, and the center position of the circle remains unchanged within a certain accuracy; a micrometer is installed on the spindle of the vertical double-axis boring machine, the spindle rotates slowly, the head of the micrometer contacts the inner cylindrical surface of the workpiece, and the fine-tuning screws of the position adjustment component and the limit screws of the pneumatic slide assembly are adjusted respectively to make the micrometer runout meet the process requirements. At this time, the center of the circle determined by the cut edges of the four ball bearings maintains a certain concentricity with the first spindle of the vertical double-axis boring machine, and this concentricity meets the process requirements; at this time, after the position adjustment plate is locked and fixed on the boring machine table, the center of the circle determined by the cut edges of the four ball bearings of the clamping centering component always maintains a certain concentricity with the first spindle of the vertical double-axis boring machine, and when replacing workpieces of different specifications, there is no need to replace the annular fixture of the boring machine;

[0020] The pneumatic slide assembly includes the end plate, which is installed on the position adjustment plate and also includes a base part and an extension part installed on the base part to realize the extension and shortening functions. The maximum extension is slightly adjusted by the limit screw of the end plate; the pneumatic slide assembly extends forward, driving the clamping and centering assembly to move forward, and the four ball bearings of the clamping and centering assembly are tangent to the workpiece of the first processing station to clamp the workpiece, and the workpiece is moved to the bottom of the first spindle of the vertical twin-axis boring machine to maintain high-precision concentricity with the spindle. At this time, the vertical twin-axis boring machine presses the workpiece, and the clamping and centering assembly releases the workpiece. The pneumatic slide assembly retracts the starting length, driving the clamping and centering assembly back to the original position, and the vertical twin-axis boring machine performs boring processing on the workpiece.

[0021] Furthermore, the material unloading cache mechanism includes a main frame, a third sensor, a fourth sensor, an electric roller assembly and a fifth sensor; the main frame is installed on the boring machine table to fix the third sensor, the fourth sensor and the electric roller assembly; the electric roller assembly is used to convey the workpiece from left to right, and the intersection area of ​​the upper area of ​​the electric roller assembly and the area in front of the third sensor detection is used as the first material unloading cache station; the intersection area of ​​the upper area of ​​the electric roller assembly and the area in front of the fourth sensor detection is used as the second material unloading cache station; if there is a workpiece at the first material unloading cache station or the second material unloading cache station, the electric roller assembly automatically starts to convey the workpiece from left to right until the workpiece reaches the fifth sensor located at the end of the material unloading cache mechanism, and then the electric roller assembly stops the conveying action.

[0022] Compared with the prior art, the present invention has the following significant advantages:

[0023] (1) Currently, there is no technology that can realize fully automatic processing of a dual-axis boring machine. The present invention proposes for the first time: a technology that can realize fully automatic processing of a dual-axis boring machine. The present invention uses an automatic material pushing mechanism to realize the automatic transfer of two workpieces from a feeding buffer station to a processing station, and simultaneously realizes the automatic transfer of two processed workpieces from a processing station to a material unloading buffer station.

[0024] (2) The automatic precision workpiece positioning mechanism is used to realize that the two workpieces in the processing station are automatically kept concentric with the two spindle boring cutters with high precision, that is, the workpieces can be quickly and automatically aligned.

[0025] (3) By using an automatic precision workpiece positioning mechanism, a set of mechanisms can replace multiple fixtures, which is compatible with all specifications of workpieces within the design range. That is, workpieces of different specifications can be processed without changing the ring fixture.

[0026] (4) Sensors are used to monitor the position status of the automatic material pushing mechanism and the automatic precision positioning mechanism for the workpiece, so that the boring machine can automatically press the workpiece and perform boring processing.

[0027] (5) Through the automatic pushing mechanism, the two workpieces are automatically transferred from the processing station to the unloading buffer station.

[0028] (6) The present invention is particularly suitable for integration into a fully automatic mechanical processing production line to achieve unattended and continuous processing; or integrated with a double-axis boring machine itself to manufacture a fully automatic double-axis boring machine.

[0029] The present invention is further described in detail below in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1It is a schematic diagram of an embodiment in which a device with multi-station automatic loading and unloading and precise workpiece positioning functions is installed on a vertical double-axis boring machine.

[0031] Figure 2 Schematic diagram of a device with multi-station automatic loading and unloading and precise workpiece positioning functions in one embodiment.

[0032] Figure 3 It is a schematic diagram of the main platform mechanism for completing loading in an embodiment.

[0033] Figure 4 Schematic diagram of an automatic material pushing mechanism in one embodiment.

[0034] Figure 5 Schematic diagram of six workstations in one embodiment.

[0035] Figure 6 Schematic diagram of the position of a workpiece in one embodiment.

[0036] Figure 7 Schematic diagram of a first automatic precision workpiece positioning mechanism in an embodiment.

[0037] Figure 8 A schematic diagram of a workpiece position determined by a first automatic precision workpiece positioning mechanism in one embodiment.

[0038] Fig. 9 Schematic diagram of a position adjustment mechanism in one embodiment.

[0039] Fig.10 Schematic diagram of the structure of a pneumatic slide assembly in one embodiment.

[0040] Fig.11 Schematic diagram of a clamping and centering assembly in one embodiment.

[0041] Fig.12 This is a schematic diagram of a material unloading and buffering loading mechanism in one embodiment.

[0042] Reference numerals:

[0043] Device with multi-station automatic loading and unloading and precise workpiece positioning functions 1, vertical double-axis boring machine 2, main platform mechanism 3, automatic material pushing mechanism 4, first automatic precise workpiece positioning mechanism 5, second automatic precise workpiece positioning mechanism 6, material unloading cache mechanism 7, boring machine table 8, second material detection sensor 9, first material detection sensor 10, second sensor bracket 11, first sensor bracket 12, thrust cylinder 13, thrust cylinder bracket 14, active transition plate 15 automatic material pushing mechanism, driven transition plate 16, guide rail bracket 17, linear guide rail assembly 18, first sliding bearing 19, second sliding bearing 20, synchronous mandrel 21, rotary cylinder 22, first material shifting rod 24, second material shifting rod 25, third material shifting rod 26, fourth material shifting rod 27, first feeding cache station 28, second feeding cache station 29, first processing station 30, second processing station Position 31, first unloading buffer station 32, second unloading buffer station 33, first workpiece 34, second workpiece 35, position adjustment assembly 38, pneumatic slide assembly 39, clamping and centering assembly 40, virtual circle 41, position adjustment plate 42, first threaded block 43, second threaded block 44, third threaded block 45, fourth threaded block 46, first fine-tuning screw 47, second fine-tuning screw 48, third fine-tuning screw 49, fourth fine-tuning screw 50, base part 51, extension part 52, limit screw 53, end plate 54, clamping jaw connecting plate 55, clamping jaw cylinder 56, left clamping jaw finger 57, right clamping jaw finger 58, first ball bearing 59, second ball bearing 60, third ball bearing 61, fourth ball bearing 62, circular workpiece 63, main frame 64, third sensor 65, fourth sensor 66, electric roller assembly 67, fifth sensor 68. DETAILED DESCRIPTION

[0044] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0045] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0046] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or suggesting their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0047] In one embodiment, a device 1 with the functions of automatic loading and unloading and precise positioning of workpieces at multiple stations is provided, which is applied to the vertical dual-axis boring machine 2. The device is used to achieve: two workpieces are automatically transferred from the feeding cache station to the processing station, and the two workpieces are automatically concentric with the boring cutter of the spindle. Workpieces of different specifications can be processed without replacing the annular fixture. The boring machine presses the workpiece and completes the processing, and the two workpieces are automatically transferred from the processing station to the unloading cache station.

[0048] Further, in one embodiment, in combination Figure 1 and Figure 2 The device includes a main platform mechanism 3, an automatic pushing mechanism 4, a first automatic precision positioning workpiece mechanism 5, a second automatic precision positioning workpiece mechanism 6 and a material unloading cache mechanism 7; the main platform mechanism 3 is installed on the vertical dual-axis boring machine 2; the automatic pushing mechanism 4 is installed on the main platform mechanism 3, and is used to push the workpiece of the feeding cache station to the processing station; the first automatic precision positioning workpiece mechanism 5 is installed on the main platform mechanism 3, and is used to precisely position the workpiece of the processing station to the target position, that is, the position concentric with the spindle boring tool, so as to ensure the clamping accuracy required by the processing technology; the second automatic precision positioning workpiece mechanism 6 has the same function as the first automatic precision positioning workpiece mechanism 5, and only the installation position is different; the material unloading cache mechanism 7 is installed on the main platform mechanism 3, and the automatic pushing mechanism 4 pushes the processed workpiece to the material unloading cache mechanism 7.

[0049] Further, in one embodiment, in combination Figure 3 and Figure 5The main platform mechanism 3 includes a boring machine table 8, a first material detection sensor 10, a second material detection sensor 9, a first sensor bracket 12 and a second sensor bracket 11; the boring machine table 8 is connected to the bed of the vertical dual-axis boring machine 2; the first sensor bracket 12 and the second sensor bracket 11 are both installed on the boring machine table 8; the first material detection sensor 10 is installed on the first sensor bracket 12 to detect whether there is a workpiece; the second material detection sensor 9 is installed on the second sensor bracket 11 to detect whether there is a workpiece;

[0050] The area above the boring machine table 8 and the overlapping area in front of the first material detection sensor 10 serve as the first feeding cache station 28; the area above the boring machine table 8 and the overlapping area in front of the second material detection sensor 9 serve as the second feeding cache station 29; the area above the boring machine table 8 and the overlapping area below the first spindle of the vertical double-axis boring machine 2 serve as the first processing station 30; the area above the boring machine table 8 and the overlapping area below the second spindle of the vertical double-axis boring machine 2 serve as the second processing station 31.

[0051] Further, in one embodiment, in combination Figure 4 The automatic material pushing mechanism 4 includes a thrust cylinder 13, a thrust cylinder bracket 14, an active transition plate 15, a driven transition plate 16, a guide rail bracket 17, a linear guide rail assembly 18, a first sliding bearing 19, a second sliding bearing 20, a synchronous mandrel 21, a rotary cylinder 22 and a material push rod assembly; the thrust cylinder 13 is installed on the boring machine table 8, the active transition plate 15 is installed on the moving slider of the thrust cylinder 13, and the thrust cylinder 13 can push the active transition plate 15 to make a linear motion; the driven transition plate 16, under the push of the active transition plate 15, makes a linear motion;

[0052] The guide rail bracket 17 is installed on the boring machine table 8; the linear guide rail assembly 18 includes a linear guide rail and two sliders installed on the guide rail, wherein the linear guide rail is installed on the guide rail bracket 17, and the first sliding bearing 19 and the second sliding bearing 20 are installed on the two sliders respectively; the synchronous mandrel 21 is connected and installed with the first sliding bearing 19 and the second sliding bearing 20, and the synchronous mandrel 21 rotates around the common axis of the first sliding bearing 19 and the second sliding bearing 20;

[0053] The first sliding bearing 19, driven by the driven transition plate 16, performs linear motion along the linear guide rail; the synchronous mandrel 21, driven by the first sliding bearing 19, performs linear motion along the linear guide rail; the second sliding bearing 20, driven by the synchronous mandrel 21, always maintains the same distance with the first sliding bearing 19;

[0054] The rotary cylinder 22 is used to drive the synchronous mandrel 21 to rotate at a certain angle, and can rotate forward and reverse;

[0055] The material shifting rod assembly is mounted on the synchronous mandrel 21 and is used to push the workpieces in the feeding buffer station to the processing station.

[0056] Further preferably, in some embodiments, the material shifting rod assembly includes a first material shifting rod 24, a second material shifting rod 25, a third material shifting rod 26 and a fourth material shifting rod 27; the synchronous core shaft 21 rotates forward to change the horizontal first material shifting rod 24, the second material shifting rod 25, the third material shifting rod 26 and the fourth material shifting rod 27 into a vertical state; the synchronous core shaft 21 rotates reversely to restore the vertical first material shifting rod 24, the second material shifting rod 25, the third material shifting rod 26 and the fourth material shifting rod 27 to a horizontal state.

[0057] Here, combined Figure 5 and Figure 6 The first feeding and buffering station 28 is used to place the first workpiece 34, and under the push of the first material shifting rod 24, it slides from left to right to the first processing station 30; the second feeding and buffering station 29 is used to place the second workpiece 35, and under the push of the second material shifting rod 25, it slides from left to right to the second processing station 31; the automatic pushing mechanism 4 performs a second push, and the first workpiece 34 slides from left to right to the first unloading cache station 32 under the second push of the first material shifting rod 24; the second workpiece 35 slides from left to right to the second unloading cache station 33 under the second push of the second material shifting rod 25.

[0058] If the first material detection sensor 10 of the main platform mechanism 3 detects that there is a workpiece in the first feeding cache station 28, and the second material detection sensor 9 detects that there is a workpiece in the second feeding cache station 29, the thrust cylinder 13 of the automatic pushing mechanism 4 is pushed to the right, and the four material levers are actuated accordingly, wherein the first material lever 24 pushes the workpiece of the first feeding cache station 28 to the first processing station 30, the second material lever 25 pushes the workpiece of the second feeding cache station 29 to the second processing station 31, the third material lever 26 pushes the workpiece of the first processing station 30 to the first unloading cache station 32, and the fourth material lever 27 pushes the workpiece of the second processing station 31 to the second unloading cache station 33, wherein the four material levers are synchronously moved, and the distance between the four material levers is constant, and the workpieces will not interfere with each other during the pushing process, thereby achieving the goal of pushing four workpieces to the right station each time.

[0059] Preferably, the first material shifting rod 24, the second material shifting rod 25, the third material shifting rod 26 and the fourth material shifting rod 27 have the same shape and have a V-shaped notch, which facilitates pushing the workpiece to slide linearly from left to right on the boring machine table 8.

[0060] Further, in one embodiment, in combination Figure 7 and Figure 8 The first automatic precision workpiece positioning mechanism 5 includes a position adjustment component 38, a pneumatic slide component 39 and a clamping and centering component 40; the clamping and centering component 40 is used to form a virtual circular space to clamp the workpiece on the processing station, and the position adjustment component 38 is used to adjust the position accuracy of the virtual circle 41 of the clamping and centering component 40; the pneumatic slide component 39 is used to control the forward and backward movements of the clamping and centering component 40.

[0061] Preferably, in some embodiments, Fig. 9 The position adjustment assembly 38 includes a position adjustment plate 42, a first threaded block 43, a second threaded block 44, a third threaded block 45, a fourth threaded block 46, a first fine-tuning screw 47, a second fine-tuning screw 48, a third fine-tuning screw 49 and a fourth fine-tuning screw 50; the position adjustment plate 42 is installed on the boring machine table 8, and allows fine-tuning of the position before being completely locked with the boring machine table 8; four threaded blocks are fixed on the boring machine table 8, and four fine-tuning screws are respectively passed through the threaded holes of the threaded blocks with corresponding numbers; by rotating the fine-tuning screws, the position of the position adjustment plate 42 can be fine-tuned.

[0062] Preferably, in some embodiments, Fig.11The clamping centering assembly 40 includes a clamping jaw connecting plate 55, a clamping jaw cylinder 56, a left clamping jaw finger 57, a right clamping jaw finger 58, a first ball bearing 59, a second ball bearing 60, a third ball bearing 61 and a fourth ball bearing 62; the clamping jaw connecting plate 55 is installed on the end plate 54 of the pneumatic slide assembly 39, so that the entire clamping centering assembly 40 follows the extension and contraction action of the pneumatic slide assembly 39 to generate forward and backward actions; the clamping jaw The cylinder 56 has two symmetrical clamping blocks, which are used to install the left clamping finger 57 and the right clamping finger 58 respectively. The left clamping finger 57 and the right clamping finger 58 can follow the clamping cylinder 56 to perform symmetrical clamping actions; the right clamping finger 58 is installed with a first ball bearing 59 and a second ball bearing 60; the left clamping finger 57 is installed with a third ball bearing 61 and a fourth ball bearing 62; the clamping cylinder 56 applies a certain clamping force to the left clamping finger 57 and the right clamping finger 58. Under the action of the clamping force, the cut edges of the four ball bearings are all tangent to the circular workpiece 63. The diameter of the circular workpiece changes within a certain range, and the center position of the circular workpiece remains unchanged within a certain accuracy; a micrometer is installed on the spindle of the vertical double-axis boring machine 2, and the spindle rotates slowly. The head of the micrometer contacts the inner cylindrical surface of the workpiece, and the fine-tuning screws of the position adjustment assembly 38 and the limit screws 5 of the pneumatic slide assembly 39 are adjusted respectively. 3. Make the runout of the micrometer meet the process requirements. At this time, the center of the circle determined by the trimming of the four ball bearings maintains a certain concentricity with the first spindle of the vertical double-axis boring machine 2, and this concentricity meets the process requirements; at this time, after the position adjustment plate 42 is locked and fixed on the boring machine table 8, the center of the circle determined by the trimming of the four ball bearings of the clamping centering assembly 40 always maintains a certain concentricity with the first spindle of the vertical double-axis boring machine 2. When replacing workpieces of different specifications, there is no need to replace the annular fixture of the boring machine;

[0063] Preferably, in some embodiments, Fig.10 The pneumatic slide assembly 39 includes the end plate 54, which is installed on the position adjustment plate 42, and also includes a base part 51 and an extension part 52 installed on the base part 51, so as to realize the extension and shortening functions. The maximum extension amount is slightly adjusted by the limit screw 53 of the end plate 54; the pneumatic slide assembly 39 extends forward, driving the clamping and centering assembly 40 to move forward, and the four ball bearings of the clamping and centering assembly 40 are tangent to the workpiece of the first processing station 30, clamping the workpiece, and the workpiece is moved to the bottom of the first spindle of the vertical double-axis boring machine 2, maintaining high-precision concentricity with the spindle. At this time, the vertical double-axis boring machine 2 presses the workpiece, and the clamping and centering assembly 40 releases the workpiece. The pneumatic slide assembly 39 retracts the starting length, driving the clamping and centering assembly 40 back to the original position, and the vertical double-axis boring machine 2 performs boring processing on the workpiece.

[0064] Further, in one embodiment, in combination Fig.12 The material unloading cache mechanism 7 includes a main frame 64, a third sensor 65, a fourth sensor 66, an electric roller assembly 67 and a fifth sensor 68; the main frame 64 is installed on the boring machine table 8, and is used to fix the third sensor 65, the fourth sensor 66 and the electric roller assembly 67; the electric roller assembly 67 is used to convey the workpiece from left to right, and the intersection area of ​​the upper area of ​​the electric roller assembly 67 and the front area detected by the third sensor 65 is used as the first material unloading cache station 32; the intersection area of ​​the upper area of ​​the electric roller assembly 67 and the front area detected by the fourth sensor 66 is used as the second material unloading cache station 33; if there is a workpiece in the first material unloading cache station 32 or the second material unloading cache station 33, the electric roller assembly 67 is automatically started to convey the workpiece from left to right until the workpiece reaches the fifth sensor 68 located at the end of the material unloading cache mechanism 7, and then the electric roller assembly 67 stops the conveying action.

[0065] It should be noted that the above-mentioned workstations, workpieces, material levers, threaded blocks, fine-tuning screws, sensors, bearings and other components can be adaptively increased or deleted according to actual needs, but as long as they are within the scope of the present invention, they fall within the protection scope of the present invention.

[0066] The present invention can effectively solve the various technical problems of manual loading and unloading and manual operation of equipment, which are not only labor-intensive and inefficient, but also frequently injure workers' palms, and require the replacement of annular fixtures of different specifications when processing workpieces of different specifications.

[0067] The above is only a preferred embodiment of the present invention and does not have any limiting effect on the present invention. Any technician in the relevant technical field, without departing from the scope of the technical solution of the present invention, makes any equivalent replacement or modification to the technical solution and technical content disclosed in the present invention, which is within the scope of the technical solution of the present invention and still within the protection scope of the present invention.

Claims

1. A device with multi-station automatic loading and unloading and precise workpiece positioning functions, applied to the vertical double-axis boring machine, characterized in that: The device is used to realize: two workpieces are automatically transferred from the feeding buffer station to the processing station, the two workpieces are automatically concentric with the boring cutter of the spindle, and workpieces of different specifications are processed without changing the annular fixture. The boring machine presses the workpieces and completes the processing, and the two workpieces are automatically transferred from the processing station to the unloading buffer station; The device comprises a main platform mechanism (3), an automatic material pushing mechanism (4), a first automatic precision workpiece positioning mechanism (5), a second automatic precision workpiece positioning mechanism (6) and a material unloading buffer mechanism (7); the main platform mechanism (3) is installed on a vertical dual-axis boring machine (2); the automatic material pushing mechanism (4) is installed on the main platform mechanism (3) and is used to push the workpiece at the material feeding buffer station to the processing station; the first automatic precision workpiece positioning mechanism (5) is installed on the main platform mechanism (3) and is used to precisely position the workpiece at the processing station to a target position, that is, a position concentric with the spindle boring tool, so as to ensure the clamping accuracy required by the processing technology; the second automatic precision workpiece positioning mechanism (6) has the same function as the first automatic precision workpiece positioning mechanism (5), and only the installation position is different; the material unloading buffer mechanism (7) is installed on the main platform mechanism (3), and the automatic material pushing mechanism (4) pushes the processed workpiece to the material unloading buffer mechanism (7).

2. The device with multi-station automatic loading and unloading and precise workpiece positioning functions according to claim 1 is characterized in that: The main platform mechanism (3) comprises a boring machine table (8), a first material detection sensor (10), a second material detection sensor (9), a first sensor bracket (12) and a second sensor bracket (11); the boring machine table (8) is connected to the bed of the vertical double-axis boring machine (2); the first sensor bracket (12) and the second sensor bracket (11) are both installed on the boring machine table (8); the first material detection sensor (10) is installed on the first sensor bracket (12) and is used to detect whether there is a workpiece; the second material detection sensor (9) is installed on the second sensor bracket (11) and is used to detect whether there is a workpiece; The area above the boring machine table (8) and the overlapping area in front of the first material detection sensor (10) serve as the first material feeding cache station (28); the area above the boring machine table (8) and the overlapping area in front of the second material detection sensor (9) serve as the second material feeding cache station (29); the area above the boring machine table (8) and the overlapping area below the first spindle of the vertical double-axis boring machine (2) serve as the first processing station (30); the area above the boring machine table (8) and the overlapping area below the second spindle of the vertical double-axis boring machine (2) serve as the second processing station (31).

3. The device with multi-station automatic loading and unloading and precise workpiece positioning functions according to claim 2 is characterized in that: The automatic material pushing mechanism (4) comprises a thrust cylinder (13), a thrust cylinder bracket (14), an active transition plate (15), a driven transition plate (16), a guide rail bracket (17), a linear guide rail assembly (18), a first sliding bearing (19), a second sliding bearing (20), a synchronous mandrel (21), a rotary cylinder (22) and a material pushing rod assembly; the thrust cylinder (13) is mounted on the boring machine table (8), the active transition plate (15) is mounted on the moving slide block of the thrust cylinder (13), and the thrust cylinder (13) can push the active transition plate (15) to perform linear motion; the driven transition plate (16) performs linear motion under the push of the active transition plate (15); The guide rail bracket (17) is installed on the boring machine table (8); the linear guide rail assembly (18) includes a linear guide rail and two slide blocks installed on the guide rail, wherein the linear guide rail is installed on the guide rail bracket (17), and the first sliding bearing (19) and the second sliding bearing (20) are installed on the two slide blocks respectively; the synchronous mandrel (21) is connected and installed with the first sliding bearing (19) and the second sliding bearing (20), and the synchronous mandrel (21) rotates around the common axis of the first sliding bearing (19) and the second sliding bearing (20); The first sliding bearing (19), driven by the driven transition plate (16), performs linear motion along the linear guide rail; the synchronous mandrel (21), driven by the first sliding bearing (19), performs linear motion along the linear guide rail; the second sliding bearing (20), driven by the synchronous mandrel (21), always maintains the same distance with the first sliding bearing (19); The rotary cylinder (22) is used to drive the synchronous core shaft (21) to rotate at a certain angle, and can rotate forward and reverse; The material push rod assembly is mounted on the synchronous core shaft (21) and is used to push the workpiece in the material feeding buffer station to the processing station.

4. The device with multi-station automatic loading and unloading and precise workpiece positioning functions according to claim 3 is characterized in that: The material shifting rod assembly comprises a first material shifting rod (24), a second material shifting rod (25), a third material shifting rod (26) and a fourth material shifting rod (27); the synchronous core shaft (21) rotates forward to make the first material shifting rod (24), the second material shifting rod (25), the third material shifting rod (26) and the fourth material shifting rod (27) in a horizontal state become a vertical state; the synchronous core shaft (21) rotates reversely to make the first material shifting rod (24), the second material shifting rod (25), the third material shifting rod (26) and the fourth material shifting rod (27) in a vertical state return to a horizontal state.

5. The device with multi-station automatic loading and unloading and precise workpiece positioning functions according to claim 4 is characterized in that: The first feeding and caching station (28) is used to place a first workpiece (34), and under the push of the first material shifting rod (24), the first workpiece slides from left to right to the first processing station (30); the second feeding and caching station (29) is used to place a second workpiece (35), and under the push of the second material shifting rod (25), the first workpiece slides from left to right to the second processing station (31); the automatic material pushing mechanism (4) performs a second push, and the first workpiece (34) slides from left to right to the first material unloading and caching station (32) under the second push of the first material shifting rod (24); the second workpiece (35) slides from left to right to the second material unloading and caching station (33) under the second push of the second material shifting rod (25).

6. The device with multi-station automatic loading and unloading and precise workpiece positioning functions according to claim 5 is characterized in that: If the first material detection sensor (10) of the main platform mechanism (3) detects that there is a workpiece at the first feeding buffer station (28), and the second material detection sensor (9) detects that there is a workpiece at the second feeding buffer station (29), the thrust cylinder (13) of the automatic pushing mechanism (4) is pushed to the right, and the four material shifting rods are actuated accordingly, wherein the first material shifting rod (24) pushes the workpiece at the first feeding buffer station (28) to the first processing station (30), and the second material shifting rod (25) pushes the workpiece at the second feeding buffer station (29) to the first processing station (30). The workpiece at the feeding buffer station (29) is pushed to the second processing station (31), the third material shifting rod (26) pushes the workpiece at the first processing station (30) to the first unloading buffer station (32), and the fourth material shifting rod (27) pushes the workpiece at the second processing station (31) to the second unloading buffer station (33), wherein the four material shifting rods are synchronously moved, and the distance between the four material shifting rods is constant, and the workpieces will not interfere with each other during the pushing process, thereby achieving the goal of pushing four workpieces to the right station each time.

7. The device with multi-station automatic loading and unloading and precise workpiece positioning functions according to claim 2 is characterized in that: The first automatic precision workpiece positioning mechanism (5) comprises a position adjustment component (38), a pneumatic slide component (39) and a clamping and centering component (40); the clamping and centering component (40) is used to form a virtual circular space to clamp the workpiece on the processing station, and the position adjustment component (38) is used to adjust the position accuracy of the virtual circle (41) of the clamping and centering component (40); the pneumatic slide component (39) is used to control the forward and backward movements of the clamping and centering component (40).

8. The device with multi-station automatic loading and unloading and precise workpiece positioning functions according to claim 7 is characterized in that: The position adjustment assembly (38) comprises a position adjustment plate (42), a first threaded block (43), a second threaded block (44), a third threaded block (45), a fourth threaded block (46), a first fine-tuning screw (47), a second fine-tuning screw (48), a third fine-tuning screw (49) and a fourth fine-tuning screw (50); the position adjustment plate (42) is mounted on the boring machine table (8) and allows for fine-tuning of the position before being completely locked with the boring machine table (8); four threaded blocks are fixed on the boring machine table (8), and four fine-tuning screws are respectively passed through threaded holes of threaded blocks with corresponding numbers; the position of the position adjustment plate (42) can be fine-tuned by rotating the fine-tuning screws.

9. The device with multi-station automatic loading and unloading and precise workpiece positioning functions according to claim 5 or 8, characterized in that: The clamping centering assembly (40) comprises a clamping jaw connecting plate (55), a clamping jaw cylinder (56), a left clamping jaw finger (57), a right clamping jaw finger (58), a first ball bearing (59), a second ball bearing (60), a third ball bearing (61) and a fourth ball bearing (62); the clamping jaw connecting plate (55) is mounted on the end plate (54) of the pneumatic slide assembly (39), so that the entire clamping centering assembly (40) follows the extension and contraction action of the pneumatic slide assembly (39) to generate forward and backward movement. The gripper cylinder (56) has two symmetrically moving clamping blocks, which are used to mount the left gripper finger (57) and the right gripper finger (58), respectively. The left gripper finger (57) and the right gripper finger (58) can follow the gripper cylinder (56) to perform symmetrical clamping actions; the right gripper finger (58) is mounted with a first ball bearing (59) and a second ball bearing (60); the left gripper finger (57) is mounted with a third ball bearing (61) and a fourth ball bearing (62); the gripper The claw cylinder (56) applies a certain clamping force to the left clamping finger (57) and the right clamping finger (58). Under the action of the clamping force, the cut edges of the four ball bearings are all tangent to the circular workpiece (63). The diameter of the circular workpiece changes within a certain range, and the center position thereof remains unchanged within a certain accuracy. A micrometer is installed on the spindle of the vertical double-axis boring machine (2). The spindle rotates slowly, and the head of the micrometer contacts the inner cylindrical surface of the workpiece. The fine adjustment screws of the position adjustment assembly (38) and the pneumatic slide assembly (39) are adjusted respectively. ) is tightened to make the micrometer runout meet the process requirements. At this time, the center of the circle determined by the cut edges of the four ball bearings maintains a certain concentricity with the first spindle of the vertical double-axis boring machine (2), and this concentricity meets the process requirements; at this time, after the position adjustment plate (42) is locked and fixed on the boring machine table (8), the center of the circle determined by the cut edges of the four ball bearings of the clamping centering assembly (40) always maintains a certain concentricity with the first spindle of the vertical double-axis boring machine (2), and when replacing workpieces of different specifications, there is no need to replace the annular fixture of the boring machine; The pneumatic slide assembly (39) includes the end plate (54), the pneumatic slide assembly (39) is installed on the position adjustment plate (42), and also includes a base portion (51) and an extension portion (52) installed on the base portion (51), so as to realize the extension and shortening functions, and the maximum extension amount is slightly adjusted by the limit screw (53) of the end plate (54); the pneumatic slide assembly (39) extends forward, driving the clamping and centering assembly (40) to move forward, The four ball bearings of the clamping and centering assembly (40) are tangent to the workpiece of the first processing station (30), clamping the workpiece, and moving the workpiece to the bottom of the first spindle of the vertical double-axis boring machine (2), maintaining high-precision concentricity with the spindle. At this time, the vertical double-axis boring machine (2) presses the workpiece, the clamping and centering assembly (40) releases the workpiece, and the pneumatic slide assembly (39) retracts to the starting length, driving the clamping and centering assembly (40) back to the original position, and the vertical double-axis boring machine (2) performs boring processing on the workpiece.

10. The device with multi-station automatic loading and unloading and precise workpiece positioning functions according to claim 5, characterized in that: The material unloading cache mechanism (7) comprises a main frame (64), a third sensor (65), a fourth sensor (66), a motorized roller assembly (67) and a fifth sensor (68); the main frame (64) is installed on the boring machine table (8) and is used to fix the third sensor (65), the fourth sensor (66) and the motorized roller assembly (67); the motorized roller assembly (67) is used to transfer the workpiece from left to right, and the intersection area between the area above the motorized roller assembly (67) and the area in front of the third sensor (65) is used as the first material unloading cache station (32); The intersection area of ​​the area above the electric roller assembly (67) and the area in front of the fourth sensor (66) serves as the second material unloading buffer station (33); if there is a workpiece at the first material unloading buffer station (32) or the second material unloading buffer station (33), the electric roller assembly (67) automatically starts to convey the workpiece from left to right until the workpiece reaches the fifth sensor (68) located at the end of the material unloading buffer mechanism (7), after which the electric roller assembly (67) stops conveying.

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