A rotary worktable for a machining center

Abstract

The present invention discloses a rotary worktable for a machining center, comprising a machining center body and a rotary table. The rotary table is composed of a pusher, a pop-up assembly, a rotary assembly, and a multi-layer storage tray. The storage tray is arranged on the rotary assembly, the pop-up assembly is located in the middle of the storage tray, and the pusher is located above the storage tray and at the upper end of the pop-up assembly. The pop-up assembly is provided with a retaining member, a movable member, and a plurality of pressing members. A movable hole for accommodating the pop-up assembly is provided in the middle of the storage tray, and a plurality of strip grooves are provided on the inner wall of the movable hole, and a retaining assembly is provided in the strip groove. The rotary structure for the machining center is compact and realizes automatic loading and unloading. The worktable adopts a rotary operation, which is convenient for taking out workpieces at any position for processing, and can also realize self-locking, which is beneficial for protecting the workpiece and avoiding surface scratches on the workpiece.

Description

Technical Field

[0001] The invention relates to numerical control machining technology, in particular to a rotary worktable used in a machining center. Background Art

[0002] CNC machining equipment is widely used in various machining fields because it can adapt to the machining of many different types of complex parts and has the characteristics of high machining efficiency and machining precision. However, although existing CNC machining equipment has a high degree of automation, it usually requires manual clamping of the workpiece. In particular, for some cylindrical workpieces, the workpiece needs to be manually clamped to the three-jaw chuck of the spindle. After machining one end of the workpiece, it needs to be manually removed and re-clamped to process the other end. The manual loading and changing of materials not only poses a great safety hazard, but also has a low efficiency in loading and changing materials, which seriously affects the machining efficiency.

[0003] CN211639115U discloses an automatic loading and unloading device for a CNC drilling and milling machining center. Although the machining center can realize automatic loading and unloading, the materials are located on an external material cart, which occupies external space, and there will be errors in the position of the material cart each time, which affects the picking and unloading of parts by the robotic arm, and the slightest carelessness will cause collisions between materials. Summary of the Invention

[0004] In order to solve the above-mentioned defects in the prior art, the present invention proposes a rotary worktable for a machining center.

[0005] The technical solution of the present invention is achieved as follows:

[0006] A rotary worktable for a machining center, characterized by comprising:

[0007] Machining center body,

[0008] The rotary table is arranged inside the machining center body, and the rotary table is composed of a pusher, an ejection assembly, a rotating assembly and a multi-layer storage tray. The storage tray is arranged on the rotating assembly, the ejection assembly is located in the middle of the storage tray, and the pusher is located above the storage tray and at the upper end of the ejection assembly.

[0009] The pop-up assembly is provided with a retaining member, a movable member and a plurality of pressing members, the movable member is located in the middle of the retaining member, the retaining member and the movable member are movably connected by a first elastic member, the pressing member is inserted into the movable member, a second elastic member is sleeved on the pressing member, the lower end of the second elastic member contacts the movable member, a plurality of locking holes and an unlocking hole are provided on the movable member, the retaining member is provided with a strip hole corresponding to the locking hole and the unlocking hole, the pressing member is provided with a push rod, the push rod passes through the locking hole and / or the unlocking hole and the strip hole and is placed in the storage tray,

[0010] The middle of the storage tray is provided with a movable hole for accommodating the ejection component. The inner wall of the movable hole is provided with multiple strip grooves, and the strip grooves are provided with a retaining component. The retaining component cooperates with the push rod to push the workpiece out of the storage tray.

[0011] In the present invention, a pushing cylinder is provided at the upper end of the pushing member, a cylinder rod is provided at the lower end of the pushing cylinder, and the cylinder rod is connected to the pushing member.

[0012] In the present invention, the pop-up assembly is further provided with a motor, the motor is provided with a screw rod, the screw rod is connected to the retaining member, and the motor is further provided with a symmetrical limiting rod, the limiting rod is matched with the retaining member.

[0013] In the present invention, the pressing part is composed of a pressure-bearing part, an extension rod, an extension rod, a pushing rod and a pushing block. The pressure-bearing part is located at the upper end of the extension rod, the extension rod is located at the lower end of the extension rod, the pushing rod is located on the side of the extension rod, the pushing block is connected to the pushing rod, and the second elastic part is sleeved on the extension rod.

[0014] In the present invention, the retaining assembly is composed of a force-bearing block, a guide rod, a hinge block and symmetrically arranged clamping parts. The force-bearing block is located below the pushing block, one end of the guide rod is connected to the force-bearing block, and the other end is connected to the hinge block. The clamping part is hingedly connected to the hinge block through the hinge rod, and the storage tray is provided with a guide hole for placing the guide rod and a storage groove for placing the clamping part. The guide rod is provided with a third elastic part, the pushing block is provided with a first inclined surface, and the force-bearing block is provided with a second inclined surface matching the first inclined surface.

[0015] In the present invention, a locking portion extending downward is provided in the locking hole, a first channel for the push rod to move is left between the locking portion and the inner wall of the locking hole, and a locking area for maintaining the position of the push rod is formed below the locking portion.

[0016] In the present invention, the unlocking hole is provided with a first inclined guide surface for guiding the push rod and a vertical surface for enabling the push rod to maintain vertical movement, and a second channel for the push rod to move is formed between the vertical surface and the inner wall of the unlocking hole.

[0017] In the present invention, the width of the first channel is H1, the width of the second channel is H2, and H1<H2.

[0018] In the present invention, one end of the first elastic member is connected to the movable member, and the other end is connected to the retaining member, and the first elastic member is in a vertical state to connect the movable member and the retaining member.

[0019] In the present invention, an arc-shaped groove is provided on the movable member, a limiting bolt is provided in the arc-shaped groove, and the limiting bolt passes through the arc-shaped groove and is connected to the retaining member.

[0020] The rotary worktable for a machining center embodying the present invention has the following beneficial effects: The rotary worktable for a machining center has a compact structure and enables automated loading and unloading. The worktable utilizes rotary operation, facilitating removal of workpieces from any position for machining. Furthermore, the self-locking feature helps protect the workpiece and prevent surface scratches. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic structural diagram of a rotary worktable for a machining center according to the present invention;

[0022] Figure 2 for Figure 1 Schematic diagram of the internal structure;

[0023] Figure 3 for Figure 2 Schematic diagram of the rotating table structure;

[0024] Figure 4 for Figure 3 Schematic diagram of the storage tray and pop-up assembly structure;

[0025] Figure 5 for Figure 4 Schematic diagram of the storage tray and some pop-up components;

[0026] Figure 6 for Figure 5 Exploded diagram;

[0027] Figure 7 for Figure 6 A top view of

[0028] Figure 8 for Figure 6 Schematic diagram of the storage tray structure;

[0029] Figure 9 for Figure 8 sectional view of ;

[0030] Figure 10 for Figure 9A local enlarged view of point A in FIG;

[0031] Figure 11 for Figure 9 A top-down perspective view;

[0032] Figure 12 for Figure 11 A local enlarged view of point B in FIG;

[0033] Figure 13 for Figure 10 Schematic diagram of the retaining component structure in FIG;

[0034] Figure 14 for Figure 6 Schematic diagram of some pop-up component structures in ;

[0035] Figure 15 for Figure 14 A perspective view of the retaining member structure in FIG.

[0036] Figure 16 for Figure 14 Schematic diagram of the structure of the moving parts;

[0037] Figure 17 for Figure 16 A local enlarged view of point C in FIG;

[0038] Figure 18 for Figure 16 A schematic diagram of the structure in another direction;

[0039] Figure 19 Schematic diagram of the structure of the pressing member and the retaining assembly in the present invention;

[0040] Figure 20 It is a schematic diagram of the structure of the movable part and the retaining part in the present invention.

[0041] In the figure: machining center body 1, rotary table 2, storage tray 3, storage slot 4, ejection component 5, holding component 6, pressing component 7, clamping component 8, pushing component 9, rotating component 10, rotating disk 11, support base 12, motor 13, cylinder rod 14, clamping area 15, holding component 16, movable component 17, first elastic component 18, second elastic component 19, locking hole 20, unlocking hole 21, strip hole 22, pushing rod 23, movable hole 24, strip slot 25, arc slot 26, limit bolt 27, screw rod 28, limit rod 29, cross rod 30, screw hole 31 , stepped portion 32, first connecting block 33, second connecting block 34, retaining wall 35, pressure portion 36, extension rod 37, extension rod 38, pushing block 39, support portion 40, through hole 41, locking end 42, placement end 43, locking portion 44, first channel 45, locking area 46, first inclined guide surface 47, second channel 48, movable area 49, second inclined guide surface 50, force block 51, guide rod 52, hinge block 53, hinge rod 54, guide hole 55, third elastic member 56, first inclined surface 57, second inclined surface 58, gap 59. DETAILED DESCRIPTION

[0042] The technical solutions in the embodiments of the present invention will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the present invention.

[0043] like Figures 1 to 20 As shown, the rotary worktable for a machining center of the present invention includes a machining center body 1 and a rotary table 2. The internal components of the machining center body 1 can be set with reference to the machining center in the prior art, but the rotary table 2 can realize automatic loading and unloading of workpieces, and does not require manual replacement of workpieces by staff. It is only necessary to place each workpiece separately on a multi-position storage tray 3 between processing, and the workpiece is fixed in the storage slot 4 through the cooperation of the pop-up component 5 and the retaining component 6.

[0044] When the robotic arm grabs the workpiece at position A on the storage tray 3, the holding component 6 at position A can be kept open. After the workpiece processing is completed, the robotic arm inserts the workpiece into the storage slot 4. At this time, the pressing member 7 at position B will be pressed downward by the pushing member 9, keeping the workpiece at position A clamped and fixed by the clamping member 8. The clamping member 8 at position B will then be opened, making it easier for the robotic arm to grab.

[0045] The rotary table 2 is located within the machining center body 1 and consists of a pusher 9, an ejection assembly 5, a rotating assembly 10, and a multi-layered storage tray 3. The storage tray 3 is mounted on the rotating assembly 10, with the ejection assembly 5 positioned in the center of the storage tray 3. The pusher 9 is positioned above the storage tray 3 and at the upper end of the ejection assembly 5. The pusher 9 is used to push the pressing member 7 in the ejection assembly 5. Since the position of the pusher 9 remains unchanged, the storage tray 3 can only be rotated by the rotating assembly 10 to achieve the movement of a single pressing member 7 to the lower end of the pusher 9.

[0046] The rotating assembly 10 comprises a rotating disk 11 and a support base 12. The multi-layered storage tray 3 is mounted on the rotating disk 11. The support base 12 houses a motor 13 that drives the rotating disk 11. The specific structure can be found in the prior art and will not be elaborated here. When the motor 13 within the support base 12 rotates, driving the rotating disk 11, the rotating disk 11 in turn drives the storage tray 3, allowing the pressing member 7 on the storage tray 3 to precisely reach the lower end of the pushing member 9.

[0047] The upper end of the pusher 9 is provided with a push cylinder, and the lower end of the push cylinder is provided with a cylinder rod 14, which is connected to the pusher 9. The push cylinder can realize the up and down movement of the pusher 9, so that the pusher 9 can apply force to the pressing members 7 in the pop-up components 5 at different heights.

[0048] In embodiment 1, a retaining member 16, a movable member 17 and a plurality of pressing members 7 are provided in the pop-up assembly 5. The movable member 17 is located in the middle of the retaining member 16. The retaining member 16 and the movable member 17 are movably connected by a first elastic member 18. The pressing member 7 is inserted into the movable member 17. A second elastic member 19 is sleeved on the pressing member 7. The lower end of the second elastic member 19 contacts the movable member 17. The movable member 17 is provided with a plurality of locking holes 20 and an unlocking hole 21. The retaining member 16 is provided with a strip hole 22 corresponding to the locking hole 20 and the unlocking hole 21. The pressing member 7 is provided with a push rod 23. The push rod 23 passes through the locking hole 20 and / or the unlocking hole 21 and the strip hole 22 and is placed in the storage tray 3.

[0049] There is a movable hole 24 in the middle of the storage tray 3 to accommodate the ejection component 5. The inner wall of the movable hole 24 is provided with multiple strip grooves 25. The strip grooves 25 are provided with a retaining component 6. The retaining component 6 cooperates with the push rod 23 to push the workpiece out of the storage tray 3.

[0050] The movable member 17 is provided with an arcuate groove 26, in which a limit pin 27 is provided. The limit pin 27 passes through the arcuate groove 26 and is connected to the retaining member 16. The arcuate groove 26 is used to limit the maximum angle of rotation of the movable member 17.

[0051] The ejection assembly 5 is further provided with a motor 13, which is provided with a screw rod 28, which is connected to the retaining member 16. The motor 13 is also provided with symmetrical limit rods 29, which cooperate with the retaining member 16. When the motor 13 drives the screw rod 28 to rotate, the limit rod 29 can limit the position of the retaining member 16, so that the retaining member 16 can only move up and down through the screw rod 28, and cannot rotate together with the screw rod 28.

[0052] The center of the retaining member 16 is hollowed out to accommodate multiple pressing members 7. A cross bar 30 is located in the center of the retaining member 16, and a screw hole 31 is formed in the center of the cross bar 30 to engage with the screw rod 28. A limit rod 29 is located at the intersection of the cross bar 30 to limit the rotation of the retaining member 16.

[0053] A stepped portion 32 is provided in the middle of the retaining member 16 . The stepped portion 32 is used to support the movable member 17 so that the movable member 17 can rotate slightly on the stepped portion 32 .

[0054] One end of the first elastic member 18 is connected to the movable member 17, and the other end is connected to the retaining member 16. The first elastic member 18 is in a vertical position, connecting the movable member 17 and the retaining member 16. The retaining member 16 is also provided with a first connecting block 33 for maintaining the position of the first elastic member 18. The movable member 17 is provided with a second connecting block 34 for maintaining the position of the first elastic member 18. The first connecting block 33 is located just below the second connecting block 34, so that the first elastic member 18 can be installed vertically.

[0055] The retaining member 16 is further provided with a retaining wall 35 for limiting the position of the movable member 17 , and the strip-shaped hole 22 is provided on the retaining wall 35 .

[0056] In Example 2, the pressing member 7 is composed of a pressure-bearing portion 36, an extension rod 37, an extension rod 38, a push rod 23, and a push block 39. The pressure-bearing portion 36 is located at the upper end of the extension rod 37, the extension rod 38 is located at the lower end of the extension rod 37, the push rod 23 is located on the side of the extension rod 37, the push block 39 is connected to the push rod 23, and the second elastic member 19 is sleeved on the extension rod 38. The diameter of the extension rod 38 is smaller than that of the extension rod 37, allowing the second elastic member 19 to be sleeved on the extension rod 38, and the upper end of the second elastic member 19 can be restrained in position by the extension rod 37. When the pressing member 7 is subjected to downward force, the extension rod 37 can exert downward pressure on the second elastic member 19, compressing the second elastic member 19.

[0057] A support portion 40 is provided on the movable member 17, and the support portion 40 is located at the upper end of the second connecting block 34. The support portion 40 is provided with multiple through holes 41, and the extension rod 38 is inserted into the through holes 41, which can keep the extension rod 38 moving up and down in the through holes 41.

[0058] The upper end of the support portion 40 is a locking end 42 , and the lower end is a placement end 43 . The locking hole 20 and the unlocking hole 21 are located on the locking end 42 , the arc groove 26 is located on the placement end 43 , and the placement end 43 is located on the stepped portion 32 .

[0059] A locking portion 44 extending downward is provided in the locking hole 20. A first passage 45 for the push rod 23 to move is defined between the g surface of the locking portion 44 and the inner wall f of the locking hole 20. A locking region 46 is formed below the locking portion 44 to maintain the position of the push rod 23. The locking region 46 is composed of the h surface and the i surface.

[0060] The unlocking hole 21 is provided with a first inclined guide surface 47 for guiding the push rod 23 and a vertical surface j for enabling the push rod 23 to maintain vertical movement. A second channel 48 for the push rod 23 to move is formed between the vertical surface j and the inner wall k of the unlocking hole 21.

[0061] The width of the first channel 45 is H1, and the width of the second channel 48 is H2, where H1<H2. This allows the push rod 23 to slide in the unlocking hole 21 while maintaining a distance greater than the distance pushed in the locking hole 20.

[0062] And because the active area 49 is set between the locking hole 20 and the unlocking hole 21, when the pressing member 7 at point A is pressed, the other pressing members 7 will move in the active area 49 from point p to point q.

[0063] When the push rod 23 is in the locking hole 20, when the push rod 23 moves downward, it slides on the second inclined guide surface 50 on the locking part 44, and then enters the first channel 45. Since the push rod 23 is limited by the position of the strip hole 22, it can only keep the movable part 17 from rotating. The first elastic part 18 is pulled by the external force of the rotation of the movable part 17, causing it to be stretched. Then the first channel 45 reaches the position where it was originally located at the locking part 44, and the movable part 17 drives the locking part 44 to rotate. Then, when the push rod 23 continues to move downward, it will enter the locking area 46 at the lower end of the locking part 44, thereby limiting the position of the push rod 23. At this time, after the push rod 23 reaches the locking area 46, the movable part 17 is pulled back to its original position by the pulling force of the first elastic part 18.

[0064] When unlocking is required, the pushing member 9 reaches the top of the unlocking hole 21 and pushes the pressing member 7, causing the pushing rod 23 to slide along the first inclined guide surface 47 and enter the second channel 48. Since there is no locking portion 44 in the unlocking hole 21, and H1 < H2, the pushing rod 23 will also push the movable member 17 to rotate, so that the angle of rotation of the movable member 17 is greater than the angle of rotation of the pushing rod 23 in the locking hole 20, and the locking portion 44 is kept rotating, so that the pushing rod 23 enters the first channel 45 and unlocks. The unlocking hole 21 is used here to unlock, and all the locking holes 20 are unlocked. When unlocking is required at A only during work, the locking hole 20 at B or other places can be unlocked, or unlocking can be achieved through the unlocking hole 21.

[0065] When the pop-up assembly 5 needs to move up and down, the storage tray 3 can be rotated a certain angle so that the pushing block 39 rotates to the gap 59 between the force-bearing blocks 51, so that the pop-up assembly 5 can be kept in the up and down moving position.

[0066] In Example 3, the retaining assembly 6 comprises a force-bearing block 51, a guide rod 52, a hinge block 53, and symmetrically arranged clamping members 8. The force-bearing block 51 is located below the pusher block 39. The guide rod 52 is connected to the force-bearing block 51 at one end and to the hinge block 53 at the other. The clamping member 8 is hingedly connected to the hinge block 53 via a hinge rod 54. The storage tray 3 is provided with a guide hole 55 for receiving the guide rod 52 and a storage slot 4 for receiving the clamping member 8. The guide rod 52 is provided with a third elastic member 56. The pusher block 39 is provided with a first inclined surface 57. The force-bearing block 51 is provided with a second inclined surface 58 that mates with the first inclined surface 57. The diameter of the guide hole 55 is larger than that of the guide rod 52, and the third elastic member 56 is located in the guide hole 55. The symmetrical clamping members 8 form a clamping region 15 between them.

[0067] After receiving force, the third elastic member 56 is blocked by the guide hole 55, achieving compression. After the pressing member 7 moves downward, the force-bearing block 51, coordinated by the first inclined surface 57 and the second inclined surface 58, moves toward the storage slot 4, thereby maintaining the compression of the third elastic member 56. The symmetrical clamping members 8 open outward, maintaining contact between the m surface of the push block 39 and the n surface of the force-bearing block 51.

[0068] The storage slot 4 is provided with a surface c, a surface d, and a point e, with point e located at the junction of surfaces c and d. The clamping member 8 is provided with a surface a and a surface b. When the clamping member 8 is in the storage slot 4, surface d contacts surface b, maintaining the clamping member 8's grip on the workpiece. In this case, the clamping area 15 is small, allowing the workpiece to be held securely.

[0069] After the guide rod 52 moves into the storage slot 4, the clamping member 8 also moves, so that the clamping member 8 is moved outward. When the b surface is not constrained by the d surface, the clamping area 15 can be expanded, thereby facilitating the removal of the workpiece.

[0070] After the workpiece is placed in the storage slot 4, it can be unlocked to keep the workpiece clamped therein, and then after the storage slot 4 is completely filled with the workpiece, the processing can be started. It only needs to put all the workpieces in at once, without having to place them separately, which can effectively save time and improve processing efficiency.

[0071] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A rotary worktable for a machining center, characterized in that: include: Machining center body, The rotary table is arranged inside the machining center body, and the rotary table is composed of a pusher, an ejection assembly, a rotating assembly and a multi-layer storage tray. The storage tray is arranged on the rotating assembly, the ejection assembly is located in the middle of the storage tray, and the pusher is located above the storage tray and at the upper end of the ejection assembly. The pop-up assembly is provided with a retaining member, a movable member and a plurality of pressing members, the movable member is located in the middle of the retaining member, the retaining member and the movable member are movably connected by a first elastic member, the pressing member is inserted into the movable member, a second elastic member is sleeved on the pressing member, the lower end of the second elastic member contacts the movable member, a plurality of locking holes and an unlocking hole are provided on the movable member, the retaining member is provided with a strip hole corresponding to the locking hole and the unlocking hole, the pressing member is provided with a push rod, the push rod passes through the locking hole and / or the unlocking hole and the strip hole and is placed in the storage tray, The middle of the storage tray is provided with a movable hole for accommodating the ejection component. The inner wall of the movable hole is provided with multiple strip grooves, and the strip grooves are provided with a retaining component. The retaining component cooperates with the push rod to push the workpiece out of the storage tray.

2. The rotary table for a machining center according to claim 1, characterized in that: A pushing cylinder is provided at the upper end of the pushing member, and a cylinder rod is provided at the lower end of the pushing cylinder, and the cylinder rod is connected to the pushing member.

3. The rotary table for a machining center according to claim 1, characterized in that: The pop-up assembly is further provided with a motor, the motor is provided with a screw rod, the screw rod is connected to the retaining member, and the motor is further provided with a symmetrical limiting rod, the limiting rod is matched with the retaining member.

4. The rotary table for a machining center according to claim 1, characterized in that: The pressing part consists of a pressure-bearing part, an extension rod, an extension rod, a pushing rod and a pushing block. The pressure-bearing part is located at the upper end of the extension rod, the extension rod is located at the lower end of the extension rod, the pushing rod is located on the side of the extension rod, the pushing block is connected to the pushing rod, and the second elastic part is sleeved on the extension rod.

5. The rotary table for a machining center according to claim 4, characterized in that: The holding assembly is composed of a force block, a guide rod, a hinge block and symmetrically arranged clamping parts. The force block is located below the pushing block, one end of the guide rod is connected to the force block, and the other end is connected to the hinge block. The clamping part is hingedly connected to the hinge block through the hinge rod. The storage tray is provided with a guide hole for placing the guide rod and a storage groove for placing the clamping part. The guide rod is provided with a third elastic part, the pushing block is provided with a first inclined surface, and the force block is provided with a second inclined surface matching the first inclined surface.

6. The rotary table for a machining center according to claim 5, characterized in that: A locking portion extending downward is provided in the locking hole, a first channel for the push rod to move is left between the locking portion and the inner wall of the locking hole, and a locking area for maintaining the position of the push rod is formed below the locking portion.

7. The rotary table for a machining center according to claim 6, characterized in that: The unlocking hole is provided with a first inclined guide surface for guiding the push rod and a vertical surface for enabling the push rod to maintain vertical movement. A second channel for the push rod to move is formed between the vertical surface and the inner wall of the unlocking hole.

8. The rotary table for a machining center according to claim 7, characterized in that: The width of the first channel is H1, the width of the second channel is H2, and H1<H2.

9. The rotary table for a machining center according to claim 1, characterized in that: One end of the first elastic member is connected to the movable member, and the other end is connected to the retaining member, and the first elastic member is in a vertical state to connect the movable member and the retaining member.

10. The rotary table for a machining center according to claim 1, characterized in that: The movable part is provided with an arc-shaped groove, in which a limiting bolt is provided. The limiting bolt passes through the arc-shaped groove and is connected to the retaining part.

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