Numerical control machine tool beneficial to chip removal

Abstract

The invention discloses a numerical control machine tool facilitating chip removal, and relates to the technical field of machine tool machining. The device comprises a cast iron rack, a clamping assembly is arranged on the cast iron rack, and the cast iron rack is in sliding fit with a tail jacking assembly and a Z-axis dragging plate; a driving assembly corresponding to the clamping assembly is arranged on one side of the cast iron machine frame, an X-axis dragging plate is arranged on the Z-axis dragging plate in a sliding fit mode, the inclination angle of the Z-axis dragging plate is 2.35 degrees, and a servo tool turret is arranged on the X-axis dragging plate. Through the 2.35-degree inclined body design of the Z-axis carriage, the reverse clearance error of the lead screw can be optimized on the mechanical principle, in the production process, the torque between a cutter and a workpiece is higher, the stability is higher, the service life is longer, and through the cooperation of the clamping assembly and the tail jacking assembly, the product smoothness is higher in the production process, and the production efficiency is improved. The precision and the stability can be guaranteed to reach the mu level, and smaller machining errors are achieved through two-way adjustment of the X-axis carriage and the Z-axis carriage.

Description

Technical Field

[0001] The invention belongs to the field of machine tool processing, and in particular relates to a numerically controlled machine tool which is advantageous for chip removal. Background Art

[0002] The lathe is an industrial machine. The traditional industrial lathe relies on manually rotating the chuck wrench to adjust the tension of the chuck to add the workpiece, then manually shifting the gear to start the spindle rotation, manually rotating the handle of the feed shaft, and calculating the turning size by the dial on the handle. It has high labor consumption and low efficiency, and is suitable for single-piece processing.

[0003] At present, there is a flat-track CNC lathe suitable for batch processing, which saves labor, but its efficiency is low, stability is poor, and the product appearance is rough. It cannot complete the complex product processing of turning and milling. Traditional equipment often needs to use CNC machining center to complete milling after turning, which is not suitable for batch precision processing.

[0004] In view of this, the present invention is proposed. Summary of the invention

[0005] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art, provide a CNC machine tool that is conducive to chip removal, and solve the problems raised in the above-mentioned background technology.

[0006] In order to solve the above technical problems, the basic concept of the technical solution adopted by the present invention is: A numerical control machine tool that is conducive to chip removal, comprising: a cast iron frame, on which a clamping assembly is arranged, a tail top assembly and a Z-axis carriage are slidably matched; A driving assembly corresponding to the clamping assembly is arranged on one side of the cast iron frame. The X-axis carriage is slidably matched with the Z-axis carriage. The inclination angle of the Z-axis carriage is 2.35°, and a servo turret is installed on the X-axis carriage.

[0007] Optionally, a chip storage chamber is provided in the cast iron frame, a leakage groove connected to the chip storage chamber is provided on the upper side of the cast iron frame, and a lower discharge port connected to the chip storage chamber is provided on the lower side of the cast iron frame.

[0008] Optionally, adjacent two sides of the cast iron frame are provided with side discharge ports communicated with the chip storage chamber.

[0009] Optionally, the clamping assembly includes a spindle box installed on the upper side of the cast iron frame, a sleeve-type spindle is rotatably mounted in the spindle box, a synchronous wheel and a hydraulic chuck are respectively mounted at both ends of the sleeve-type spindle, and the spindle box is located between the synchronous wheel and the hydraulic chuck.

[0010] Optionally, the driving assembly includes a servo motor 1, the output shaft of the servo motor 1 is fixedly connected to a synchronous wheel 2, a synchronous belt is sleeved on the circumferential side of the synchronous wheel 2 and the synchronous wheel 1, a retaining frame is installed on one side of the cast iron frame, the servo motor 1 is installed on the retaining frame, and the end of the servo motor 1 away from the synchronous wheel 2 is placed in the cast iron frame.

[0011] Optionally, the tail top assembly includes an electric slide, a hydraulic tail top is installed on the upper side of the electric slide, two guide frames are provided on the upper side of the cast iron frame, the electric slide is slidably fitted on the two guide frames, and one end of the guide frame extends to just above the drain groove.

[0012] Optionally, a machine base is installed on the upper side of the cast iron frame, a servo motor 2 is installed on the machine base, a screw rod 1 is fixedly connected to the output shaft of the servo motor 2, and the lower thread of the Z-axis slide plate is engaged with the peripheral side of the screw rod 1.

[0013] Optionally, two guide rails are installed on the upper side of the cast iron frame, the machine base and the screw rod are located between the two guide rails, the Z-axis slide plate is slidably fitted on the two guide rails, and the guide rail height of the adjacent clamping assembly is lower than the other guide rail.

[0014] Optionally, a frame is installed on the Z-axis slide, and a servo motor three is installed on the frame. The output shaft of the servo motor three is fixedly connected to a screw rod two. The lower thread of the X-axis slide is engaged with the peripheral side of the screw rod two. Two slide bars are installed under the X-axis slide, and the slide bars are slidably engaged with the side faces of the Z-axis slide.

[0015] Optionally, the servo turret includes a servo motor 4 installed on the X-axis carriage and a protective housing, the servo motor 4 is located in the protective housing, the output shaft of the servo motor 4 is fixedly connected to the turret, and the turret is located on the side of the protective housing.

[0016] After adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art. Of course, any product implementing the present invention does not necessarily need to achieve all the advantages described below at the same time: The 2.35° bevel design of the Z-axis slide can optimize the reverse clearance error of the screw rod in mechanical principles. During the production process, the torque between the tool and the workpiece is stronger, the stability is higher, and the service life is longer. By matching the clamping assembly and the tail top assembly, the product finish is higher during the production process, and the accuracy and stability can be guaranteed to the μ level. Through the two-way adjustment of the X-axis slide and the Z-axis slide, smaller processing errors can be achieved.

[0017] The specific implementation modes of the present invention are further described in detail below in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings described below are only some embodiments. For those skilled in the art, other drawings can be obtained based on these drawings without creative work. In the drawings: Figure 1 It is a schematic diagram of the structure of the clamping assembly; Figure 2 It is a schematic diagram of the X and Z axis carriage structure; Figure 3 It is a schematic diagram of the drive component structure; Figure 4 This is a schematic diagram of the chip storage chamber structure.

[0019] In the accompanying drawings, the components represented by the reference numerals are listed as follows: Cast iron frame 1, chip storage chamber 101, sump 102, lower discharge port 103, side discharge port 104, spindle box 2, sleeve type spindle 201, synchronous wheel 1 202, guide frame 3, electric slide 4, hydraulic tail top 5, baffle frame 6, guide rail 7, machine base 8, Z-axis slide 9, frame 10, X-axis slide 11, slide bar 1101, servo motor 4 12, turret 13, protective casing 14.

[0020] It should be noted that these drawings and textual descriptions are not intended to limit the conceptual scope of the present invention in any way, but are intended to illustrate the concept of the present invention for those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0021] The present invention will now be described in further detail with reference to the accompanying drawings.

[0022] See also Figure 1-4 As shown, in this embodiment, a CNC machine tool that is conducive to chip removal is provided, including: a cast iron frame 1, on which a clamping assembly, a tail top assembly and a Z-axis carriage 9 are provided for sliding cooperation; A driving assembly corresponding to the clamping assembly is arranged on one side of the cast iron frame 1, an X-axis carriage 11 is slidably matched on the Z-axis carriage 9, the inclination angle of the Z-axis carriage 9 is 2.35°, and a servo turret is installed on the X-axis carriage 11.

[0023] One aspect of the application of this embodiment is: when in use, put the part to be processed into the CNC machine tool, then control the clamping assembly to automatically clamp the part, the tail ejection assembly ejects the clamping assembly to complete the part clamping, and the tool required for processing is installed on the servo turret. After the tool is set, start the CNC machine tool to process the part. The position of the servo turret can be adjusted by the displacement of the X-axis carriage 11 and the Z-axis carriage 9, and the clamping assembly is driven by the driving assembly to rotate, so that the part rotates and is cut. It should be noted that all electrical equipment involved in this application can be powered by batteries or external power supplies.

[0024] The 2.35° iterative design of the Z-axis slide 9 can optimize the reverse clearance error of the screw rod in mechanical principles. In the production process, the torque between the tool and the workpiece is stronger, the stability is higher, and the service life is longer. By matching the clamping assembly and the tail top assembly, the product finish is higher during the production process, and the accuracy and stability can be guaranteed to the μ level. Through the two-way adjustment of the X-axis slide 11 and the Z-axis slide 9, a smaller processing error can be achieved.

[0025] like Figure 1 , 4 As shown, the cast iron frame 1 of this embodiment is provided with a chip storage chamber 101, and the upper side of the cast iron frame 1 is provided with a leakage groove 102 connected to the chip storage chamber 101, the length and width of the upper opening of the leakage groove 102 are greater than the length and width of the lower opening thereof, and the lower side of the cast iron frame 1 is provided with a lower discharge port 103 connected to the chip storage chamber 101, so that the metal chips generated by cutting can fall into the chip storage chamber 101 through the leakage groove 102, and then the metal chips in the chip storage chamber 101 are discharged from the lower discharge port 103, thereby reducing the probability of metal chips accumulating on the upper side of the cast iron frame 1.

[0026] like Figure 1-3 As shown, the adjacent two sides of the cast iron frame 1 of this embodiment are provided with side discharge ports 104 connected to the chip storage chamber 101 . When a large amount of metal chips are accumulated in the chip storage chamber 101 , the metal chips in the chip storage chamber 101 can be taken out from the side discharge ports 104 .

[0027] like Figure 1 As shown, the clamping assembly of this embodiment includes a spindle box 2 installed on the upper side of the cast iron frame 1, and a sleeve-type spindle 201 is rotatably matched in the spindle box 2. A synchronous wheel 202 and a hydraulic chuck are respectively installed at both ends of the sleeve-type spindle 201. The spindle box 2 is located between the synchronous wheel 202 and the hydraulic chuck, and the parts are clamped and fixed by the hydraulic chuck.

[0028] like Figure 3 As shown, the driving component of this embodiment includes a servo motor 1, the output shaft of the servo motor 1 is fixedly connected with a synchronous wheel 2, the circumferential sides of the synchronous wheel 2 and the synchronous wheel 1 202 are sleeved with a synchronous belt, a retaining frame 6 is installed on one side of the cast iron frame 1, the servo motor 1 is installed on the retaining frame 6, and the end of the servo motor 1 away from the synchronous wheel 2 is placed in the cast iron frame 1. The servo motor 1 drives the synchronous wheel 2 to rotate, and the rotation of the synchronous wheel 2 drives the synchronous wheel 1 202 to rotate synchronously. The rotation of the synchronous wheel 1 202 drives the sleeve type spindle 201 and the hydraulic chuck to rotate, thereby driving the clamped parts to rotate. The sleeve type spindle 201 has the advantages of high precision, good performance and stable quality.

[0029] like Figure 1 , 2As shown, the tail top assembly of this embodiment includes an electric slide 4, a hydraulic tail top 5 is installed on the upper side of the electric slide 4, two guide frames 3 are provided on the upper side of the cast iron frame 1, the electric slide 4 is slidably fitted on the two guide frames 3, and one end of the guide frame 3 extends to just above the leakage groove 102, so that the fixed parts are placed just above the leakage groove 102, which is convenient for metal chips generated by the cutting process to fall into the leakage groove 102. The hydraulic tail top 5 can complete the precision processing of longer parts to ensure the coaxiality and taper of the longer parts.

[0030] like Figure 1 As shown, a machine base 8 is installed on the upper side of the cast iron frame 1 of this embodiment, and a servo motor 2 is installed on the machine base 8. The output shaft of the servo motor 2 is fixedly connected with a screw rod 1, and the lower thread of the Z-axis slide plate 9 is engaged with the circumferential side of the screw rod 1. The servo motor 2 drives the screw rod 1 to rotate, and the rotation of the screw rod 1 drives the Z-axis slide plate 9 to slide and move.

[0031] like Figure 1 As shown, two guide rails 7 are installed on the upper side of the cast iron frame 1 of this embodiment, the machine base 8 and the screw rod 1 are located between the two guide rails 7, and the Z-axis slide plate 9 is slidably fitted on the two guide rails 7. The height of the guide rail 7 of the adjacent clamping assembly is lower than the other guide rail 7, so that the Z-axis slide plate 9 presents a certain inclination angle, and the stability of the Z-axis slide plate 9 when sliding is improved by the guide rail 7, the friction between the Z-axis slide plate 9 and the cast iron frame 1 when sliding is reduced, and the probability of the Z-axis slide plate 9 sliding due to the rotation of the screw rod 1 is reduced.

[0032] like Figure 2 As shown, a frame 10 is installed on the Z-axis slide 9 of this embodiment, and a servo motor 3 is installed on the frame 10. The output shaft of the servo motor 3 is fixedly connected with a screw rod 2. The lower thread of the X-axis slide 11 is engaged with the circumference of the screw rod 2. Two slide bars 1101 are installed under the X-axis slide 11. The slide bars 1101 are slidably engaged with the side surfaces of the Z-axis slide 9. The servo motor 3 drives the screw rod 2 to rotate, and the screw rod 2 rotates to drive the X-axis slide 11 to slide and move. The sliding direction of the X-axis slide 11 is limited by the slide bar 1101, so as to improve the stability of the X-axis slide 11 when sliding.

[0033] like Figure 1 As shown, the servo turret of this embodiment includes a servo motor 12 and a protective shell 14 installed on the X-axis slide 11, the servo motor 12 is located in the protective shell 14, the output shaft of the servo motor 12 is fixedly connected to the turret 13, the turret 13 is located on the side of the protective shell 14, the servo motor 12 drives the turret 13 to rotate, and the servo motor 12 is protected from dust and collision by the protective shell 14. The servo turret is precisely positioned with an end gear disc, can realize bidirectional indexing and nearby tool selection, and has the characteristics of high positioning accuracy, compact structure, fast indexing speed, ability to withstand large cutting force, and wide range of applicability.

[0034] Servo motor 1, servo motor 2, servo motor 3 and servo motor 4 12 have the following advantages: Accuracy: Achieve closed-loop control of position, speed and torque, which can overcome the problem of stepping motor out of step; Speed: Good high-speed performance, generally the rated speed can reach 2000-3000 rpm; Adaptability: Strong overload resistance, able to withstand loads three times the rated torque, especially suitable for occasions with instantaneous load fluctuations and requiring rapid start-up; Stable: It runs smoothly at low speed. It is not easy to produce stepping operation phenomenon similar to stepping motor when running at low speed. It is suitable for occasions with high-speed response requirements. Timeliness: The dynamic response time of motor acceleration and deceleration is short, generally within ten milliseconds; Not easy to get hot; Less noise.

[0035] This can enable it to meet the production and processing requirements of the CNC machine tool in terms of accuracy, efficiency, stability, etc.

[0036] The present invention is not limited to the above-mentioned embodiments. Anyone should be aware that any structural changes made under the enlightenment of the present invention, and any technical solutions that are the same or similar to the present invention, fall within the protection scope of the present invention. The technology, shape, and structural parts not described in detail in the present invention are all well-known technologies.

Claims

1. A CNC machine tool that facilitates chip removal, characterized in that: include: A cast iron frame (1), on which a clamping assembly, a tail top assembly and a Z-axis carriage (9) are provided in sliding cooperation; A drive assembly corresponding to the clamping assembly is arranged on one side of the cast iron frame (1); an X-axis carriage (11) is slidably matched on the Z-axis carriage (9); the Z-axis carriage (9) has an inclination angle of 2.35°; and a servo turret is mounted on the X-axis carriage (11).

2. A CNC machine tool that facilitates chip removal according to claim 1, characterized in that: A chip storage chamber (101) is provided in the cast iron frame (1), a drain groove (102) communicating with the chip storage chamber (101) is provided on the upper side of the cast iron frame (1), and a lower discharge port (103) communicating with the chip storage chamber (101) is provided on the lower side of the cast iron frame (1).

3. A CNC machine tool that facilitates chip removal according to claim 2, characterized in that: Adjacent two sides of the cast iron frame (1) are provided with side discharge ports (104) that are in communication with the chip storage chamber (101).

4. A CNC machine tool that facilitates chip removal according to claim 1, characterized in that: The clamping assembly comprises a spindle box (2) mounted on the upper side of a cast iron frame (1), a sleeve-type spindle (201) rotatably fitted in the spindle box (2), and a synchronous wheel (202) and a hydraulic chuck are respectively mounted at both ends of the sleeve-type spindle (201).

5. A CNC machine tool that facilitates chip removal according to claim 4, characterized in that: The drive assembly comprises a servo motor 1, the output shaft of the servo motor 1 is fixedly connected to a synchronous wheel 2, a synchronous belt is sleeved around the circumference of the synchronous wheel 2 and the synchronous wheel 1 (202), a retaining frame (6) is installed on one side of the cast iron frame (1), and the servo motor 1 is installed on the retaining frame (6).

6. A CNC machine tool that facilitates chip removal according to claim 1, characterized in that: The tail top assembly comprises an electric slide (4), a hydraulic tail top (5) is mounted on the upper side of the electric slide (4), two guide frames (3) are arranged on the upper side of the cast iron frame (1), and the electric slide (4) is slidably fitted on the two guide frames (3).

7. A CNC machine tool that facilitates chip removal according to claim 1, characterized in that: A machine base (8) is mounted on the upper side of the cast iron frame (1), a servo motor 2 is mounted on the machine base (8), a screw rod 1 is fixedly connected to the output shaft of the servo motor 2, and a threaded portion of the lower portion of the Z-axis carriage (9) is engaged with the peripheral side of the screw rod 1.

8. A CNC machine tool that facilitates chip removal according to claim 7, characterized in that: Two guide rails (7) are installed on the upper side of the cast iron frame (1), and the Z-axis carriage (9) is slidably fitted on the two guide rails (7).

9. A CNC machine tool that facilitates chip removal according to claim 1, characterized in that: A frame (10) is mounted on the Z-axis carriage (9), a servo motor 3 is mounted on the frame (10), a screw rod 2 is fixedly connected to the output shaft of the servo motor 3, a threaded portion of the lower portion of the X-axis carriage (11) is engaged with the peripheral side of the screw rod 2, two slide bars (1101) are mounted below the X-axis carriage (11), and the slide bars (1101) are slidably engaged with the side surfaces of the Z-axis carriage (9).

10. A CNC machine tool that facilitates chip removal according to claim 1, characterized in that: The servo turret comprises a servo motor 4 (12) and a protective housing (14) mounted on an X-axis carriage (11); the servo motor 4 (12) is located in the protective housing (14); and an output shaft of the servo motor 4 (12) is fixedly connected to the turret (13).

Images