Four-axis rotary table for numerical control machine tool

Abstract

The utility model relates to the technical field of numerical control machine tools, and discloses a four-axis turntable for a numerical control machine tool, which comprises an air cylinder, a support plate is fixed on a telescopic shaft of the air cylinder, and an adjusting plate rotating along a vertical surface is rotatably mounted on the support plate; a horizontal rotating shaft is rotationally installed in the supporting plate and is in transmission fit with the adjusting plate through a transmission assembly. A mounting groove is formed in the supporting plate; the rotating shaft penetrates through the mounting groove; the rotating shaft is fixedly sleeved with a clamping ring, the clamping ring is located in the mounting groove, and a plurality of clamping grooves are formed in the clamping ring in the radial direction of the rotating shaft and evenly distributed in the circumferential direction of the rotating shaft. A double-lock clamping assembly is installed on the supporting plate and provided with two clamping ends, and the two clamping ends are in clamping rotation limiting fit with the clamping grooves in the clamping ring. The double-lock clamping assembly is provided with the two clamping ends, and only when the two clamping ends are separated from the corresponding clamping grooves, the rotation limitation on the rotating shaft can be relieved, so that the probability of separation caused by accidental touch and the probability of production accidents are reduced, and meanwhile, a machine tool is effectively prevented from being damaged.

Description

Technical Field

[0001] This utility model relates to the field of CNC machine tool technology, and in particular to a four-axis rotary table for CNC machine tools. Background Technology

[0002] Numerical control machine tools are a type of automated machine tool equipped with a program control system. Information is input into the numerical control device via a carrier, processed, and then various control signals are issued by the numerical control device to control the machine tool's movements and automatically process parts according to the shape and size required by the drawings.

[0003] A CNC four-axis rotary table is a rotary worktable used in CNC machine tools. It can be mounted on the machine tool bed, column, or X / Y slide. Controlled by a CNC system, it achieves high-precision rotary motion, thereby completing the machining of workpieces.

[0004] A four-axis rotary table for a CNC machine tool, as described in announcement number CN222608734U, includes: a CNC machine tool body, with a rotary table body disposed above the CNC machine tool body; and an adjustment assembly comprising a support plate, an adjustment plate, an arc plate, a rack, and gears. The support plate is disposed above the CNC machine tool body, and a fixed plate is fixedly disposed on one side of the support plate. Two damping shafts are fixedly disposed at the bottom outer end of the fixed plate, and the other ends of the two damping shafts are fixedly disposed at one bottom end of the adjustment plate. The main body is fixedly mounted on the adjustment plate. The arc-shaped plate is fixedly mounted at the bottom of the adjustment plate. A through hole is provided through the support plate. The arc-shaped plate is slidably disposed through the through hole. The rack is fixedly disposed on the outer side of the arc-shaped plate. A shaft is rotatably disposed on the inner wall of the through hole. The other end of the shaft is rotatably disposed through one side of the support plate. The shaft is fixedly disposed through a gear. A crank handle is fixedly disposed on the outer side of the shaft. A pin is slidably disposed through the crank handle. A locking hole is provided on one side of the support plate. The pin is engaged with the locking hole.

[0005] Based on the above technical features, the problem is that after adjusting the horizontal or vertical state, the existing four-axis rotary table needs to be fixed with a pin. Due to the complexity of the workshop, the fault tolerance rate of fixing with a single pin is low, and it is easy to accidentally hit the pin, causing it to disengage from the locking hole, which can easily damage the machine tool and, in severe cases, cause production accidents.

[0006] Therefore, it is necessary to solve the above problems by using a four-axis rotary table for CNC machine tools. Utility Model Content

[0007] The purpose of this invention is to provide a four-axis rotary table for CNC machine tools to solve the problems mentioned in the background art.

[0008] To achieve the above objectives, this utility model provides the following technical solution: a four-axis rotary table for a CNC machine tool, comprising a cylinder fixedly mounted on the machine tool, a support plate fixedly mounted on the telescopic shaft of the cylinder, and an adjustment plate rotatably mounted on the support plate along a vertical plane;

[0009] A horizontal rotating shaft is rotatably mounted inside the support plate, and the rotating shaft and the adjusting plate are driven by a transmission assembly;

[0010] The support plate has an installation groove, and the rotating shaft passes through the installation groove; a retaining ring is fixedly sleeved on the rotating shaft, the retaining ring is located in the installation groove, and multiple retaining grooves are opened on the retaining ring along the radial direction of the rotating shaft, and the multiple retaining grooves are evenly distributed along the circumference of the rotating shaft.

[0011] The support plate is equipped with a double-locking snap-fit ​​assembly, which has two snap-fit ​​ends that engage with the slots on the snap ring to limit rotation.

[0012] Preferably, the double-locking assembly includes two rotating rods and two locking blocks; two limiting grooves are radially formed within the support plate along the rotating shaft, with the openings of the two limiting grooves facing each other, and the mounting groove is located between the two limiting grooves and communicates with them; a locking block is slidably installed in each limiting groove, and the two locking blocks, as two locking ends, engage with the locking groove on the locking ring for limited rotation; two rotating rods are rotatably installed in the mounting groove, with each rotating rod corresponding to one of the two locking blocks; one end of each rotating rod is driven by a linkage component to the corresponding locking block, and the other end of each rotating rod extends out of the support plate; a spring for rotational reset is fixedly provided between each rotating rod and the support plate.

[0013] Preferably, the linkage includes a push shaft and an inclined groove; the inclined groove is a through groove and is formed on the locking block; the push shaft is fixed on the rotating rod and is parallel to the rotation axis of the rotating rod; the push shaft passes through the inclined groove and is in a limiting sliding fit with the inclined groove.

[0014] Preferably, the support plate has a clearance groove for the rotating rod to make room for rotation.

[0015] Preferably, the transmission assembly includes a gear and an arc-shaped rack; the arc-shaped rack is fixed on the adjusting plate, and the center of the arc of the rack is located on the rotation axis of the adjusting plate; the gear is fixedly sleeved on the rotating shaft; the gear meshes with the arc-shaped rack.

[0016] Preferably, the support plate has a horizontally oriented meshing groove, and the rotating shaft passes through the meshing groove; the gear is located in the meshing groove, and the arc-shaped rack is in a limiting sliding fit with the meshing groove.

[0017] Preferably, one axial end of the rotating shaft extends out from the support plate, and a handwheel is coaxially fixed on the axial end.

[0018] Preferably, a turntable body is mounted on the adjustment plate.

[0019] The technical effects and advantages of this utility model are as follows: The double-locking snap-fit ​​assembly of this utility model is provided with two snap-fit ​​ends. Only when both snap-fit ​​ends are disengaged from the corresponding slots can the rotation restriction on the rotating shaft be released, thereby greatly reducing the probability of accidental disengagement, effectively preventing machine tool damage and reducing the probability of production accidents. Attached Figure Description

[0020] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0021] Figure 2 This is a schematic diagram of the internal structure of the support plate of this utility model;

[0022] Figure 3 This utility model Figure 2 Enlarged view of point A;

[0023] Figure 4 This is a schematic diagram of the double-locking snap-fit ​​assembly of this utility model.

[0024] In the diagram: 1. Machine tool; 2. Cylinder; 3. Support plate; 4. Rotary shaft; 5. Gear; 6. Arc rack; 7. Adjusting plate; 8. Turntable body; 9. Snap ring; 10. Support shaft; 11. Rotary rod; 12. Spring; 13. Push shaft; 14. Snap block; 15. Inclined groove; 16. Snap slot. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0026] This utility model provides, for example Figures 1 to 4 The four-axis rotary table for a CNC machine tool shown includes a cylinder 2 fixedly mounted on a machine tool 1. The output shaft of the cylinder 2 faces vertically upward, and a support plate 3 is fixedly mounted on the output shaft of the cylinder 2. An adjusting plate 7 that rotates along a vertical plane is rotatably mounted on the support plate 3.

[0027] Specifically, a horizontal fixing plate is fixedly installed on one side of the support plate 3, and two horizontal and coaxially opposed damping rotation shafts are fixedly installed on the end of the fixing plate 4 away from the support plate 3. The adjusting plate 7 is fixedly connected to the two damping rotation shafts. The turntable body 8 is fixedly installed on the adjusting plate 7. The damping rotation shafts are the same as those disclosed in the four-axis turntable for CNC machine tools described in announcement number CN222608734U.

[0028] A horizontal rotating shaft 4 is inserted into the support plate 3. The rotating shaft 4 is parallel to the two damping rotating shafts and is rotatably connected to the support plate 3.

[0029] One of the axial ends of the rotating shaft 4 extends out of the support plate 3 and a handwheel is coaxially fixedly mounted on the axial end.

[0030] The rotating shaft 4 and the adjusting plate 7 are connected by a transmission assembly to drive the adjusting plate 7 to rotate along the vertical plane.

[0031] Specifically, the transmission assembly includes a gear 5 and an arc-shaped rack 6. The arc-shaped rack 6 is fixed to the end of the adjusting plate 7 away from the two damping rotation shafts, and the arc center of the arc-shaped rack 6 is located on the central axis of the two damping rotation shafts.

[0032] Gear 5 is fixedly mounted on shaft 4. Gear 5 meshes with arc-shaped rack 6.

[0033] A horizontal meshing groove is formed on the support plate 3, and the rotating shaft 4 passes through the meshing groove. The gear 5 is located in the meshing groove, and the arc-shaped rack 6 is in a limiting sliding fit with the meshing groove.

[0034] The support plate 3 has an installation groove, through which the rotating shaft 4 passes. A retaining ring 9 is fixedly sleeved on the other axial end of the rotating shaft 4. The retaining ring 9 is located in the installation groove and has multiple retaining grooves 16 along the radial direction of the rotating shaft 4. The multiple retaining grooves 16 are evenly distributed along the circumference of the rotating shaft 4.

[0035] A double-locking snap-fit ​​assembly is installed on the support plate 3. The double-locking snap-fit ​​assembly has two snap-fit ​​ends, which engage with the snap-fit ​​groove 16 on the snap ring 9 to limit rotation.

[0036] Specifically, the double-locking assembly includes two rotating rods 11 and two locking blocks 14. Two limiting grooves are formed radially along the rotating shaft 4 inside the support plate 3. The openings of the two limiting grooves are opposite each other, and the mounting groove is located between the two limiting grooves and communicates with the two limiting grooves.

[0037] Each limiting slide groove is equipped with a limiting sliding block 14. The two limiting blocks 14 serve as two locking ends that engage with the locking groove 16 on the locking ring 9 to limit rotation.

[0038] Two parallel support shafts 10 are horizontally placed within the mounting slot. Both support shafts 10 are spatially perpendicular to and symmetrically arranged with respect to the rotating shaft 4. Both support shafts 10 are rotatably connected to the support plate 3.

[0039] Two support shafts 10 correspond one-to-one with two rotating rods 11. Each support shaft 10 is perpendicular to the corresponding rotating rod 11 and passes through the corresponding rotating rod 11. Each support shaft 10 is fixedly connected to the corresponding rotating rod 11.

[0040] Two rotating rods 11 correspond one-to-one with two locking blocks 14. One end of each rotating rod 11 is connected to the corresponding locking block 14 via a linkage, and the other end of each rotating rod 11 extends out of the support plate 3. The support plate 3 has a clearance groove for the two rotating rods 11 to rotate and make room.

[0041] Specifically, the linkage includes a push shaft 13 and an inclined groove 15. The inclined groove 15 is a through groove and is formed on the locking block 14. A U-shaped frame is fixedly installed on the rotating rod 11, and the push shaft 13 is horizontally placed between the two far ends of the U-shaped frame and fixedly connected to the two far ends of the U-shaped frame.

[0042] The push shaft 13 is parallel to the support shaft 10, and the push shaft 13 passes through the inclined groove 15 and is in a limited sliding fit with the inclined groove 15.

[0043] In this embodiment, the two inclined slots 15 are arranged symmetrically in a figure-eight shape relative to the rotating shaft 4.

[0044] Two mounting plates are fixedly mounted on the support plate 3, and a spring 12 is fixedly mounted on each of the two mounting plates. The two springs 12 correspond one-to-one with the two rotating rods 11, and each spring 12 is located on the rotation plane of the corresponding rotating rod 11. The end of each spring 12 away from the mounting plate is fixedly connected to the corresponding rotating rod 11.

[0045] In this embodiment, to ensure smooth rotation of the rotating rod 11, the spring 12 is replaced with a torsion spring. The torsion spring is sleeved on the support shaft 10, with one end fixedly connected to the rotating rod 11 and the other end fixedly connected to the support plate 3.

[0046] Working principle: When adjusting the state of this four-axis rotary table, simultaneously pinch both rotating rods 11. The ends of the two rotating rods 11 that are away from the corresponding locking block 14 rotate towards each other, while the ends of the two rotating rods 11 with U-shaped brackets rotate away from each other. During this process, the two rotating rods 11 compress the corresponding springs 12, and the two rotating rods 11 drive the corresponding push shafts 13 to move synchronously through the corresponding U-shaped brackets. The two push shafts 13 slide within the corresponding inclined grooves 15, and at the same time, the two push shafts 13 push the corresponding locking blocks 14 out of the locking slots 16.

[0047] After both locking blocks 14 have completely disengaged from their locking slots 16, maintain the pushing force on the two rotating rods 11. Simultaneously, rotate the handwheel, which drives the rotating shaft 4 to rotate. The rotating shaft 4 drives the gear 5 to rotate, and the gear 5 pushes the arc-shaped rack 6 to revolve around the two damping rotation axes. The arc-shaped rack 6 drives the adjusting plate 7 to rotate, and the adjusting plate 7 drives the turntable body 8 to revolve synchronously around the two damping rotation axes. This achieves the adjustment of the state of the turntable body 8.

[0048] After adjustment, two of the retaining grooves 16 on the retaining ring 9 are aligned with the openings of the two limiting sliding grooves. Next, the two rotating rods 11 are released. Under the elastic force of the two springs 12, the ends of the two rotating rods 11 that are away from the corresponding retaining blocks 14 rotate away, and simultaneously, the ends of the two rotating rods 11 with the U-shaped brackets rotate away. During this process, the two springs 12 extend, and the two rotating rods 11 drive the corresponding push shafts 13 to move synchronously through the corresponding U-shaped brackets. The two push shafts 13 slide within the corresponding inclined grooves 15, and simultaneously push the corresponding retaining blocks 14 into the corresponding retaining grooves 16.

[0049] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A four-axis rotary table for a CNC machine tool, comprising a cylinder (2) fixedly mounted on a machine tool (1), a support plate (3) fixedly mounted on the telescopic shaft of the cylinder (2), and an adjusting plate (7) rotatably mounted on the support plate (3) for rotating along a vertical plane; characterized in that: A horizontal rotating shaft (4) is rotatably installed inside the support plate (3), and the rotating shaft (4) and the adjusting plate (7) are connected by a transmission assembly. The support plate (3) is provided with an installation groove, and the rotating shaft (4) passes through the installation groove; a retaining ring (9) is fixedly sleeved on the rotating shaft (4), the retaining ring (9) is located in the installation groove and multiple retaining grooves (16) are provided on the retaining ring (9) along the radial direction of the rotating shaft (4), and the multiple retaining grooves (16) are evenly distributed along the circumference of the rotating shaft (4); The support plate (3) is equipped with a double-locking snap-fit ​​assembly. The double-locking snap-fit ​​assembly has two snap-fit ​​ends, which engage with the snap-fit ​​groove (16) on the snap ring (9) to limit rotation.

2. The four-axis rotary table for CNC machine tools according to claim 1, characterized in that: The double-locking snap-fit ​​assembly includes two rotating rods (11) and two snap-fit ​​blocks (14); two limiting grooves are opened radially along the rotating shaft (4) inside the support plate (3), the openings of the two limiting grooves are opposite each other, and the mounting groove is located between the two limiting grooves and communicates with the two limiting grooves; a snap-fit ​​block (14) is installed in each limiting groove for limiting sliding, and the two snap-fit ​​blocks (14) are engaged with the snap-fit ​​groove (16) on the snap ring (9) as two snap-fit ​​ends; the two rotating rods (11) are rotatably installed in the mounting groove, and the two rotating rods (11) correspond one-to-one with the two snap-fit ​​blocks (14); one end of each rotating rod (11) is engaged with the corresponding snap-fit ​​block (14) through a linkage, and the other end of each rotating rod (11) extends out of the support plate (3); a spring (12) for rotational reset is fixedly provided between each rotating rod (11) and the support plate (3).

3. The four-axis rotary table for CNC machine tools according to claim 2, characterized in that: The linkage includes a push shaft (13) and an inclined groove (15); the inclined groove (15) is a through groove and is opened on the locking block (14); the push shaft (13) is fixed on the rotating rod (11) and is parallel to the rotation axis of the rotating rod (11); the push shaft (13) passes through the inclined groove (15) and is in a limiting sliding fit with the inclined groove (15).

4. The four-axis rotary table for CNC machine tools according to claim 2, characterized in that: The support plate (3) is provided with a clearance groove for the rotating rod (11) to rotate and make room.

5. The four-axis rotary table for CNC machine tools according to claim 1, characterized in that: The transmission assembly includes a gear (5) and an arc rack (6); the arc rack (6) is fixed on the adjusting plate (7), and the arc center of the arc rack (6) is located on the rotation axis of the adjusting plate (7); the gear (5) is fixedly sleeved on the rotating shaft (4); the gear (5) meshes with the arc rack (6).

6. The four-axis rotary table for CNC machine tools according to claim 5, characterized in that: The support plate (3) has a horizontal meshing groove, and the rotating shaft (4) passes through the meshing groove; the gear (5) is located in the meshing groove, and the arc-shaped rack (6) is in a limiting sliding fit with the meshing groove.

7. The four-axis rotary table for CNC machine tools according to claim 1, characterized in that: One axial end of the rotating shaft (4) extends out from the support plate (3), and a handwheel is coaxially fixed on the axial end.

8. The four-axis rotary table for CNC machine tools according to claim 1, characterized in that: The turntable body (8) is mounted on the adjustment plate (7).

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