Hydraulic center rest turning and milling combined machine tool

Abstract

The application discloses a hydraulic center frame turning and milling combined machine tool, and particularly relates to the technical field of combined machine tools, which comprises a machine body, a machining seat, a controller and a combined machining assembly. The combined machining assembly comprises a curved guide rail, a sliding sleeve block, an inclined groove seat, an inclined plate, a first-order tool seat, a pointed tool, a second-order tool seat, a corner tool, a third-order tool seat and a turning and milling groove tool. The combined machining assembly is adopted, the pointed tool, the corner tool and the turning and milling groove tool can be positioned according to preset curved step positions, precise and intelligent synchronous operation is realized, the combined machining efficiency is improved, the number of tool setting and path adjustment is reduced, and the machining accuracy of the combined machine tool is improved. Therefore, the problem that multiple different tools cannot be precisely and synchronously operated according to preset curved step positions is solved, the combined machining efficiency is improved, and the machining accuracy is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of combined processing machine tools, and more particularly to a turning-milling compound machine tool equipped with a hydraulic center frame. Background Art

[0002] In the intelligent manufacturing equipment industry, milling-turning machine tools are combined machining equipment that integrates multiple turning and milling functions, making them particularly suitable for machining diverse metal materials. Their core value lies in their ability to complete the multi-step machining of complex parts in a single clamping operation.

[0003] Patent publication number CN104139304A discloses a milling machine tool. This technology utilizes a milling saddle to drive a column and a milling slide along the axial direction of a spindle unit. The column drives the milling slide along a first radial direction of the spindle unit, and the milling slide moves along a second radial direction of the spindle unit, with the first radial direction being perpendicular to the second radial direction. However, this technology has the following drawbacks.

[0004] In the intelligent manufacturing equipment industry, combined turning and milling machine tool processing faces efficiency and precision challenges. For different tools, traditional operations require first switching the tool to determine the origin, then moving to the curve path position, and then replacing another tool to repeat this process. However, when processing curved step routes, since each tool needs to be precisely processed according to the curve step turning and milling position, traditional technology makes it difficult to ensure that multiple different tools operate precisely and synchronously according to the preset curve step inclination position. This process not only leads to low combined processing efficiency, but also significantly reduces processing accuracy due to multiple tool settings and path adjustments. Summary of the Invention

[0005] In order to overcome the above-mentioned defects of the prior art, the present invention provides the following technical solution: a hydraulic center frame turning and milling compound machine tool, including a machine body, a processing seat and a controller, the processing seat is fixed on the inner wall of the machine body, and a combined processing assembly is provided on one side of the processing seat; the combined processing assembly includes a curved guide rail fixedly arranged on one side of the processing seat, the outer wall of the curved guide rail is slidably connected with a sliding sleeve, one side of the sliding sleeve is fixedly connected with an inclined groove seat, the inner wall of the inclined groove seat is slidably connected with an inclined plate, the inclined surface of one side of the inclined plate is fixedly connected with a first-step tool seat, and a tip knife is installed at one end of the first-step tool seat; a second-step tool seat is provided on one side of the first-step tool seat, and a corner knife is installed at one end of the second-step tool seat, a third-step tool seat is provided on one side of the second-step tool seat, and a turning and milling slot cutter is installed at one end of the third-step tool seat.

[0006] Preferably, the sliding sleeve is slidably connected to the processing seat; the first-stage tool holder, the second-stage tool holder, and the third-stage tool holder are arranged in a stepped and tilted manner from left to right; the tip knife, the corner knife, and the turning and milling slot cutter are arranged in a stepped and tilted manner from left to right. The first-stage tool holder and the second-stage tool holder are both slidably connected to the inclined slot seat, and the third-stage tool holder is slidably connected to the inclined slot seat. A linkage bar is fixedly connected to the top of the tilting plate, and a linkage block is fixedly installed on the top of the linkage bar, and the linkage block is slidably connected to the inclined slot seat; a tilting electric cylinder is slidably installed above the linkage bar, and the tilting electric cylinder is fixedly connected to the tilting slot seat, and the output end of the tilting electric cylinder is fixedly connected to the linkage block. A first distance sensor is fixedly connected to the outer wall of the tilting electric cylinder, and the tilting electric cylinder and the first distance sensor are both electrically connected to the controller.

[0007] During operation, as the sliding sleeve moves along the outer wall of the curved guide rail, the tilting slot seat drives the first-step tool holder along the curved path. Simultaneously, the tilting slot seat drives the second-step tool holder along the curved path, and can also drive the third-step tool holder along the curved path. A second distance sensor senses the distance between the moving electric cylinder and the second distance sensor. When the distance value sensed by the second distance sensor matches the distance value set by the controller, the cutting edge tool, corner tool, and milling cutter all move synchronously to precise intelligent positions along the curved path. The tilting electric cylinder causes the linkage block to tilt along the inner wall of the tilting slot seat. The tilting plate tilts the first-step tool holder, which drives the cutting edge tool. Simultaneously, the tilting plate tilts the second-step tool holder, which in turn tilts the corner tool. The tilting plate tilts the third-step tool holder, which in turn tilts the milling cutter. This allows the cutting edge tool, corner tool, and milling cutter to contact the workpiece at stepped tilt positions, enabling precise, synchronized operation of the workpiece at pre-set curved stepped tilt positions for different tools.

[0008] Preferably, a linkage support block is fixedly connected to the upper surface of the sliding sleeve; a sliding rod is fixedly connected to one side of the linkage support block, and two slip rings are fixedly installed on the outer wall of the sliding rod, a frame plate is slidably connected between the two slip rings, the frame plate is slidably connected to the sliding rod, and a moving bar is fixedly installed on the upper surface of the frame plate; a moving block is fixedly installed on one side of the moving bar, and a moving electric cylinder is installed on one side of the moving block, the moving electric cylinder is fixedly connected to the processing seat, the output end of the moving electric cylinder is fixedly connected to the moving block, the moving block is slidably connected to the processing seat, a second distance sensor is fixedly installed on the outer wall of the moving electric cylinder, and both the moving electric cylinder and the second distance sensor are electrically connected to the controller. A gap is provided between the linkage support block and the processing seat, and the outer walls of the two slip rings are smooth surfaces. The moving block is slidably connected to the processing seat, and the vertical cross-section of the moving block is L-shaped.

[0009] When this technology is in use, the moving cylinder drives the moving block to the left, the moving bar drives the frame to the left, the slide rod causes the two slip rings to move left, and the linkage support block causes the sliding sleeve to move left. The sliding sleeve moves along the outer wall of the curved guide rail. The slide rod slides inside the frame, and the two slip rings slide on the frame.

[0010] Preferably, a baffle is fixedly connected to the upper surface of the inclined slot seat; a workpiece is positioned on one side of the baffle, a three-jaw chuck is mounted on the outer wall of the workpiece, a transmission motor is mounted on one end of the three-jaw chuck, the transmission motor is used to drive the three-jaw chuck to rotate, and the transmission motor is fixedly connected to the machine body; a center frame is slidably connected to the outer wall of the workpiece, a plurality of rollers are rollingly connected to the inner wall of the center frame, a hydraulic cylinder is mounted on one side of the center frame, a housing is fixedly connected to one side of the hydraulic cylinder, and the controller is fixedly located on the outer wall of the housing. The plurality of rollers are arranged in an equidistant circular pattern, the outer walls of the rollers are all smooth, and the controller is electrically connected to the transmission motor. A door is positioned on one side of the controller, which is slidably connected to the machine body.

[0011] When using this technology, a workpiece is inserted into the inner wall of a three-jaw chuck, which clamps the workpiece. A hydraulic cylinder drives a center frame, which then drives multiple rollers to position themselves against the outer wall of the workpiece. The center frame is hydraulically moved to the outer wall of the workpiece. These rollers provide stable positioning of the workpiece's outer wall.

[0012] Technical effects and advantages of the present invention:

[0013] 1. The present invention adopts a combined processing component. When the sliding sleeve moves along the outer wall of the curved guide rail in a curved path, the inclined groove seat drives the second-level tool holder to move in a curved path, and can also drive the third-level tool holder to move in a curved path. The first-level tool holder drives the tip tool to move in a curved path, and the second-level tool holder drives the corner tool to move in a curved path. The first-level tool holder drives the tip tool to move in an inclined manner, the second-level tool holder makes the corner tool move in an inclined manner, and the third-level tool holder drives the turning and milling slotting cutter to move in an inclined manner. The tip tool, the corner tool, and the turning and milling slotting cutter can perform precise and intelligent synchronous operations according to the preset curved step inclination positions, which not only makes the combined processing more efficient, but also reduces the number of tool setting and path adjustments, and significantly improves the accuracy of the machine tool combined processing.

[0014] 2. The present invention drives the moving bar to move leftward by the moving block, and the moving bar drives the frame plate to move leftward. The sliding rod causes the two slip rings to move leftward, and the sliding sleeve moves in a curve along the outer wall of the curved guide rail. The sliding rod slides inside the frame plate, and the slip ring slides on the frame plate, ensuring that the inclined slot seat can move stably along the curved path, and the tip tool, corner tool, and turning and milling slot tool can perform stable combined processing according to the preset curved step inclined position.

[0015] 3. The present invention adopts a hydraulic cylinder to push the center frame to move, and the center frame drives multiple rollers to be positioned on the outer wall of the workpiece. The center frame is hydraulically moved to the outer wall of the workpiece, and combined processing is performed with the center frame, which can make the workpiece tilt according to the preset curve step position and stably perform combined processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the overall structure of the turning-milling compound machine tool with a hydraulic center frame according to the present invention.

[0017] Figure 2 It is a schematic diagram of the vertical cross-section structure of the turning-milling compound machine tool with a hydraulic center frame according to the present invention.

[0018] Figure 3 It is a schematic diagram of the partial structure of the baffle and the inclined slot seat of the present invention.

[0019] Figure 4 It is a schematic diagram of the local structure of the connection between the inclined plate and the first-stage tool holder of the present invention.

[0020] Figure 5 It is a schematic diagram of the local structure of the connection between the linkage block and the linkage bar of the present invention.

[0021] Figure 6 It is a schematic diagram of the partial structure of the connection between the sliding sleeve block and the linkage support block of the present invention.

[0022] Figure 7 This is a schematic diagram of a partial structure of the connection between the moving bar and the moving block of the present invention.

[0023] Figure 8 It is a schematic diagram of the local structure of the vertical section of the connection between the workpiece and the central frame of the present invention.

[0024] Figure 9 It is a schematic diagram of the partial structure of the vertical section of the connection between the housing and the hydraulic cylinder of the present invention.

[0025] The accompanying drawings are marked as follows: 1. machine body; 2. processing seat; 3. curved guide rail; 4. sliding sleeve; 5. inclined slot seat; 6. inclined plate; 7. first-order tool seat; 8. tip knife; 9. second-order tool seat; 10. corner knife; 11. third-order tool seat; 12. turning and milling slot cutter; 13. linkage bar; 14. linkage block; 15. tilting electric cylinder; 16. first distance sensor; 17. linkage support block; 18. slide bar; 19. slip ring; 20. frame plate; 21. moving bar; 22. moving block; 23. moving electric cylinder; 24. second distance sensor; 25. baffle; 26. workpiece; 27. three-jaw chuck; 28. transmission motor; 29. ​​center frame; 30. hydraulic cylinder; 31. housing; 32. controller; 33. roller body; 34. door body. DETAILED DESCRIPTION

[0026] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0027] As attached Figure 1 - Attachment Figure 9 The figure shows a hydraulic center frame turning and milling compound machine tool, which is provided with a combined processing component. The setting of the combined processing component enables the tip tool 8, the corner tool 10 and the turning and milling slot tool 12 to perform precise and intelligent synchronous operation according to the preset curve step tilt position, which not only makes the combined processing more efficient, but also reduces the number of tool setting and path adjustment, and significantly improves the accuracy of the machine tool combined processing. The specific structural setting of the combined processing component is as follows.

[0028] In this technical solution, as shown in the attached Figure 1 - Attachment Figure 4 As shown, the processing seat 2 is fixed on the inner wall of the machine body 1, and a combined processing assembly is provided on one side of the processing seat 2; the combined processing assembly includes a curved guide rail 3 fixedly arranged on one side of the processing seat 2, the outer wall of the curved guide rail 3 is slidably connected to a sliding sleeve block 4, one side of the sliding sleeve block 4 is fixedly connected to an inclined groove seat 5, the inner wall of the inclined groove seat 5 is slidably connected to an inclined plate 6, one side of the inclined surface of the inclined plate 6 is fixedly connected to a first-step tool seat 7, and a sharp knife 8 is installed at one end of the first-step tool seat 7.

[0029] A second-stage tool holder 9 is provided on one side of the first-stage tool holder 7. A corner cutter 10 is mounted on one end of the second-stage tool holder 9. A third-stage tool holder 11 is provided on one side of the second-stage tool holder 9. A milling cutter 12 is mounted on one end of the third-stage tool holder 11. The sliding sleeve 4 is slidably connected to the processing seat 2. The first-stage tool holder 7, the second-stage tool holder 9, and the third-stage tool holder 11 are arranged in a stepped, tilted arrangement from left to right. The tip cutter 8, the corner cutter 10, and the milling cutter 12 are arranged in a stepped, tilted arrangement from left to right. The first-stage tool holder 7 and the second-stage tool holder 9 are both slidably connected to the inclined slot holder 5, and the third-stage tool holder 11 is slidably connected to the inclined slot holder 5.

[0030] In this technical solution, as shown in the attached Figure 4 - Attachment Figure 5As shown, a linkage bar 13 is fixedly connected to the top of the tilting plate 6, a linkage block 14 is fixedly installed on the top of the linkage bar 13, and the linkage block 14 is slidingly connected to the tilting slot seat 5; a tilting electric cylinder 15 is slidingly installed above the linkage bar 13, the tilting electric cylinder 15 is fixedly connected to the tilting slot seat 5, the output end of the tilting electric cylinder 15 is fixedly connected to the linkage block 14, and a first distance sensor 16 is fixedly connected to the outer wall of the tilting electric cylinder 15, and the tilting electric cylinder 15 and the first distance sensor 16 are both electrically connected to the controller 32.

[0031] In this technical solution, as shown in the attached Figure 6 - Attachment Figure 7 As shown, the upper surface of the sliding sleeve block 4 is fixedly connected to a linkage support block 17; one side of the linkage support block 17 is fixedly connected to a slide rod 18, and two slip rings 19 are fixedly installed on the outer wall of the slide rod 18, and a frame plate 20 is slidably connected between the two slip rings 19, and the frame plate 20 is slidably connected to the slide rod 18, and a moving bar 21 is fixedly installed on the upper surface of the frame plate 20.

[0032] A movable block 22 is fixedly mounted on one side of the movable bar 21. A movable electric cylinder 23 is mounted on one side of the movable block 22. The movable electric cylinder 23 is fixedly connected to the processing base 2. The output end of the movable electric cylinder 23 is fixedly connected to the movable block 22. The movable block 22 and the processing base 2 are in sliding connection. A second distance sensor 24 is fixedly mounted on the outer wall of the movable electric cylinder 23. Both the movable electric cylinder 23 and the second distance sensor 24 are electrically connected to the controller 32. A gap is provided between the linkage support block 17 and the processing base 2. The outer walls of the two slip rings 19 are both smooth. The movable block 22 is in sliding connection with the processing base 2. The vertical cross-section of the movable block 22 is L-shaped.

[0033] In this technical solution, as shown in the attached Figure 1 - Attachment Figure 9 As shown, a baffle 25 is fixedly connected to the upper surface of the inclined groove seat 5. A workpiece 26 is positioned on one side of the baffle 25. A three-jaw chuck 27 is mounted on the outer wall of the workpiece 26. A transmission motor 28 is mounted on one end of the three-jaw chuck 27. The transmission motor 28 is used to drive the three-jaw chuck 27 in rotation and is fixedly connected to the machine body 1. A center frame 29 is slidably connected to the outer wall of the workpiece 26. Multiple rollers 33 are rollingly connected to the inner wall of the center frame 29. A hydraulic cylinder 30 is mounted on one side of the center frame 29. One side of the hydraulic cylinder 30 is fixedly connected to a housing 31. A controller 32 is fixed to the outer wall of the housing 31. The multiple rollers 33 are arranged in a circular pattern with equal spacing. The outer surfaces of the rollers 33 are all smooth. The controller 32 is electrically connected to the transmission motor 28. A door 34 is provided on one side of the controller 32 and is slidably connected to the machine body 1.

[0034] The working principle of the present invention with a hydraulic center frame turning and milling compound machine tool is as follows:

[0035] During installation, insert the workpiece 26 onto the inner wall of the three-jaw chuck 27, clamp the workpiece 26 with the three-jaw chuck 27, and move the center frame 29 with the hydraulic cylinder 30. Since the hydraulic cylinder 30 is a prior art, we will not elaborate on the hydraulic principle, as it is currently disclosed. The center frame 29 drives multiple rollers 33 to position themselves on the outer wall of the workpiece 26. At the same time, the machine body 1 supports the outer shell 31, which supports the hydraulic cylinder 30. The center frame 29 is hydraulically moved to the outer wall of the workpiece 26. At the same time, the multiple rollers 33 can stably position the outer wall of the workpiece 26, allowing for complex processing in conjunction with the center frame 29. The door 34 is then pulled to the right, closing the machine body 1.

[0036] Step 2: During the curved path positioning movement, the controller 32 activates the moving cylinder 23, which drives the moving block 22 to the left. The moving block 22 drives the moving bar 21 to the left. The moving bar 21 drives the frame plate 20 to the left. The frame plate 20 drives the slide bar 18 to the left. The slide bar 18 causes the two slip rings 19 to move left. Simultaneously, the slide bar 18 drives the linkage support block 17 to the left. The linkage support block 17 causes the sliding sleeve 4 to move left. The sliding sleeve 4 moves in a curved path along the outer wall of the curved guide rail 3. Simultaneously, the slide bar 18 slides inside the frame plate 20, and the two slip rings 19 slide on the frame plate 20.

[0037] Step 3: During combined processing, the three-jaw chuck 27 is driven to rotate by the transmission motor 28, and the three-jaw chuck 27 drives the workpiece 26 to rotate at high speed. When the sliding sleeve 4 moves along the outer wall of the curved guide rail 3 in a curved path, the sliding sleeve 4 drives the inclined groove seat 5 to move in a curved path, and the inclined groove seat 5 drives the first-stage tool holder 7 to move in a curved path. At the same time, the inclined groove seat 5 drives the second-stage tool holder 9 to move in a curved path, and the inclined groove seat 5 can also drive the third-stage tool holder 11 to move in a curved path. In this way, the first-stage tool holder 7 drives the tip tool 8 to move in a curved path, the second-stage tool holder 9 drives the corner tool 10 to move in a curved path, and the third-stage tool holder 11 drives the turning and milling slotting tool 12 to move in a curved path. The distance between the mobile electric cylinder 23 and the second distance sensor 24 is sensed by the second distance sensor 24. When the distance value sensed by the second distance sensor 24 is the same as the distance value set by the controller 32, the mobile electric cylinder 23 is closed by the controller 32, so that the tip knife 8, the corner knife 10 and the turning and milling slotting tool 12 are all moved synchronously to the precise intelligent position according to the curved path.

[0038] At the same time, controller 32 activates tilting electric cylinder 15, which causes linkage block 14 to tilt along the inner wall of tilted slot holder 5. Linkage block 14 drives linkage bar 13 to tilt, which in turn drives tilt plate 6. Tilt plate 6 tilts first-stage tool holder 7, which in turn drives tip cutter 8. Tilt plate 6 also tilts second-stage tool holder 9, which in turn drives corner cutter 10. Tilt plate 6 simultaneously tilts third-stage tool holder 11, which in turn drives slotting cutter 12. This allows tip cutter 8, corner cutter 10, and slotting cutter 12 to contact workpiece 26 in stepped, tilted positions. Debris generated is blocked and protected by baffle 25, enabling high-speed turning and milling processing on workpiece 26. Simultaneously, workpiece 26 drives multiple rollers 33 to roll, which roll stably within center frame 29. The first distance sensor 16 senses the distance between the linkage block 14 and the first distance sensor 16. When the distance value sensed by the first distance sensor 16 matches the distance value set by the controller 32, the controller 32 deactivates the tilting electric cylinder 15. This allows for precise synchronization of the preset curved step tilt positions of different tools on the workpiece 26, not only improving combined machining efficiency but also reducing the number of tool settings and path adjustments, significantly improving machining accuracy.

[0039] The contents not described in detail in the specification belong to the existing technology known to those skilled in the art, and the model parameters of each electrical appliance are not specifically limited, and conventional equipment can be used. In this technical solution, the electrical control components not mentioned are not shown in the figure because they belong to the existing technology and are not described here.

[0040] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. 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 turning-milling compound machine tool with a hydraulic center frame, including a machine body, a processing base and a controller, characterized by: The processing seat is fixed on the inner wall of the machine body, and a combined processing component is provided on one side of the processing seat; The combined processing assembly includes a curved guide rail fixedly arranged on one side of the processing seat, a sliding sleeve block is slidably connected to the outer wall of the curved guide rail, an inclined groove seat is fixedly connected to one side of the sliding sleeve block, an inclined plate is slidably connected to the inner wall of the inclined groove seat, an inclined surface of one side of the inclined plate is fixedly connected to a first-step tool seat, and a cutting edge tool is installed at one end of the first-step tool seat; A second-stage tool holder is provided on one side of the first-stage tool holder, a corner tool is installed on one end of the second-stage tool holder, a third-stage tool holder is provided on one side of the second-stage tool holder, and a milling cutter is installed on one end of the third-stage tool holder; The top of the inclined plate is fixedly connected with a linkage bar, the top of the linkage bar is fixedly installed with a linkage block, and the linkage block is slidably connected to the inclined slot seat; A tilting electric cylinder is slidably mounted above the linkage bar, the tilting electric cylinder is fixedly connected to the tilting slot seat, the output end of the tilting electric cylinder is fixedly connected to the linkage block, a first distance sensor is fixedly connected to the outer wall of the tilting electric cylinder, and both the tilting electric cylinder and the first distance sensor are electrically connected to the controller; The upper surface of the sliding sleeve block is fixedly connected with a linkage support block; A sliding rod is fixedly connected to one side of the linkage support block, two slip rings are fixedly installed on the outer wall of the sliding rod, a frame plate is slidably connected between the two slip rings, the frame plate is slidably connected to the sliding rod, and a moving bar is fixedly installed on the upper surface of the frame plate; A moving block is fixedly installed on one side of the moving bar, a moving electric cylinder is installed on one side of the moving block, the moving electric cylinder is fixedly connected to the processing seat, the output end of the moving electric cylinder is fixedly connected to the moving block, the moving block is slidingly connected to the processing seat, a second distance sensor is fixedly installed on the outer wall of the moving electric cylinder, and the moving electric cylinder and the second distance sensor are both electrically connected to the controller.

2. The turning-milling compound machine tool with a hydraulic center frame according to claim 1, characterized in that: The sliding sleeve is slidably connected to the processing seat; The first-stage tool holder, the second-stage tool holder and the third-stage tool holder are arranged in an inclined manner in a stepped manner from left to right; The tip cutter, the corner cutter and the turning and milling cutter are arranged in an inclined manner in a stepped manner from left to right.

3. The turning-milling compound machine tool with a hydraulic center frame according to claim 1, characterized in that: The first-stage tool holder and the second-stage tool holder are both slidably connected to the inclined groove holder, and the third-stage tool holder is slidably connected to the inclined groove holder.

4. The turning-milling compound machine tool with a hydraulic center frame according to claim 1, characterized in that: A gap is provided between the linkage support block and the processing seat, and the outer walls of the two slip rings are both smooth surfaces.

5. The turning-milling compound machine tool with a hydraulic center frame according to claim 1, characterized in that: The moving block is slidably connected to the processing seat, and the vertical cross-section of the moving block is L-shaped.

6. The turning-milling compound machine tool with a hydraulic center frame according to claim 1, characterized in that: A baffle is fixedly connected to the upper surface of the inclined groove seat; A workpiece is provided on one side of the baffle, a three-jaw chuck is installed on the outer wall of the workpiece, a transmission motor is installed on one end of the three-jaw chuck, the transmission motor is used to drive the three-jaw chuck to rotate, and the transmission motor is fixedly connected to the machine body; The outer wall of the workpiece is slidably connected to the central frame, the inner wall of the central frame is rollingly connected to a plurality of rollers, a hydraulic cylinder is installed on one side of the central frame, one side of the hydraulic cylinder is fixedly connected to the outer shell, and the controller is fixed on the outer wall of the outer shell.

7. The turning-milling compound machine tool with a hydraulic center frame according to claim 6, characterized in that: The plurality of rollers are arranged in a circular ring with equal spacing, the outer walls of the rollers are all smooth surfaces, and the controller is electrically connected to the transmission motor.

8. The turning-milling compound machine tool with a hydraulic center frame according to claim 6, characterized in that: A door body is provided on one side of the controller, and the door body is slidably connected to the machine body.

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