A double-tool-rest vertical lathe

Abstract

The present invention discloses a double tool post vertical lathe, which is characterized by comprising a bed base box, a mounting frame, a clamping and rotating device, a clamping and rotating power device, a left tool post device, a right tool post device, and an upper pressing and rotating device; the left tool post device and the right tool post device are arranged on the mounting frame and are composed of the same structure, the left tool post device and the right tool post device respectively include an up and down lifting device, a left and right sliding device, and a tool fixing module, and the side of the tool fixing module is installed with a cooling oil cylinder for cooling the tool thereon; the upper pressing and rotating device can press the workpiece on the clamping and rotating device, and the workpiece can rotate relative to the upper pressing and rotating device during the processing. The position setting and travel path of the two tool post devices of the present invention will not interfere with each other, which is convenient for processing; and there is no need to clamp and fix the workpiece multiple times, the stability of the workpiece positioning is better, and the processing accuracy and processing efficiency are improved.

Description

Technical Field

[0001] The invention relates to the technical field of lathes, and in particular to a double-tool-rest vertical lathe. Background Art

[0002] Lathes are mainly used to turn rotating workpieces with turning tools. With the development of technology, mechatronic CNC lathes have emerged. During processing, the workpiece needs to be fixed and then the moving tool is controlled to process the workpiece. However, it is impossible to process different parts of a workpiece simultaneously, so double-tool-holder lathes have emerged.

[0003] However, the existing double-turret lathe has design defects. The existing double-turret lathe sets the double turrets on the same crossbeam guide for horizontal feed movement, which not only restricts the movement of the turrets, but also affects the formation of the turrets. Especially in the processing of shaft workpieces, it is necessary to perform circular processing on different parts of the workpiece, which brings troubles to the processing; and when it is necessary to perform hole processing on the end of the workpiece, it is necessary to change the clamping and positioning of the workpiece. The re-clamping and positioning requires the calibration of the last rotation machining center of the workpiece, and the tool needs to be replaced, resulting in a decrease in the accuracy of the workpiece processing and a decrease in the processing efficiency. Therefore, a new technical solution is urgently needed in the existing technology to improve these existing problems. Summary of the invention

[0004] The purpose of the present invention is to solve the problems raised in the above background technology and provide a double-tool-post vertical lathe.

[0005] In order to solve the above technical problems, the technical solution of the present invention is: a double-tool-post vertical lathe, comprising a bed base box, a mounting frame, a clamping and rotating device, a clamping and rotating power device, a left tool post device, a right tool post device, and an upper pressing and rotating device; the mounting frame and the clamping and rotating device are fixedly connected to the bed base box, the clamping and rotating device is used to fix the workpiece, and the clamping and rotating power device is fixedly arranged in the bed base box and can drive the clamping and rotating device to tighten and rotate the workpiece;

[0006] The left tool holder device and the right tool holder device are arranged on the mounting frame and are composed of the same structure. The left tool holder device and the right tool holder device respectively include an up-and-down lifting device, a left-and-right sliding device, and a tool fixing module; the up-and-down lifting device is installed and connected to the mounting frame, the left-and-right sliding device is installed and connected to the up-and-down lifting device, and the tool fixing module is installed and connected to the left-and-right sliding device. The up-and-down lifting device drives the left-and-right sliding device thereon to move up and down, and the left-and-right sliding device drives the tool fixing module thereon to move left and right; the tool fixing module is used to install the tool, and a cooling oil cylinder for cooling the tool thereon is installed on the side of the tool fixing module;

[0007] The upper clamping rotating device is connected to the mounting frame and corresponds to the upper and lower positions of the clamping rotating device. The upper clamping rotating device can clamp the workpiece on the clamping rotating device, and the workpiece can rotate relative to the upper clamping rotating device during processing.

[0008] In the above-mentioned double-tool-post vertical lathe, the up and down lifting device includes a lifting motor, a lifting base, a lifting motor seat, and a lifting screw. The lifting base is fixed on the mounting frame, the lifting motor seat is fixedly connected to the lifting base, the lifting motor is installed and fixed on the lifting motor seat, the lifting screw is installed on the lifting base and is connected to the lifting motor through a transmission coupling head; a lifting slide rail is provided on the lifting base, and the lifting motor drives the left and right sliding devices to move up and down as a whole along the lifting slide rail through the lifting screw rod.

[0009] In the above-mentioned double-tool-post vertical lathe, the left and right sliding devices include a sliding motor, a lifting connection seat, a sliding connection seat, a sliding motor seat, and a sliding screw. The lifting connection seat forms a sliding connection with the lifting base through a lifting slide rail, and the lifting connection seat is provided with a lifting screw joint that is transmission-connected to the lifting screw, and the lifting connection seat is provided with a slide rail plate that forms a positioning sliding connection between the sliding connection seat and the lifting connection seat, and the sliding connection seat is provided with a slide rail; the sliding motor seat is fixedly connected to the sliding connection seat, the sliding motor is installed and fixed on the sliding motor seat, the sliding screw is installed on the sliding connection seat and is transmission-connected to the sliding motor through a transmission coupling head; the sliding connection seat is provided with a sliding screw joint that is rotationally connected to the sliding screw, and the sliding motor drives the sliding connection seat to slide through the sliding screw, thereby driving the tool fixing module on the sliding connection seat to move.

[0010] In the above-mentioned double-tool-post vertical lathe, the upper clamping rotating device includes a clamping motor, a clamping motor seat, a clamping sliding frame, a clamping sleeve, and a clamping screw. The clamping motor seat is fixed on the mounting frame, and the clamping motor is fixedly connected to the clamping motor seat. A clamping slide rail assembly is provided on the mounting frame, and the clamping slide rail assembly is slidably connected to the mounting frame. A clamping screw linkage block connected to the clamping screw is provided on the clamping slide frame, and the clamping screw is transmitted to the clamping motor through a transmission coupling head. The clamping sleeve is connected to the clamping sliding frame in a fixed manner, and a clamping rolling shaft is installed at the lower end of the clamping sleeve. The clamping sliding frame drives the clamping sleeve to move up and down, so that the clamping rolling shaft at its lower end clamps the workpiece on the clamping rotating device, and the workpiece rotates relative to the clamping sleeve through the clamping rolling shaft. The clamping sleeve is provided with a tool clearance slot, and the tool fixed on the left tool holder device or the right tool holder device can process the workpiece in the clamping sleeve through the tool clearance slot.

[0011] In the above-mentioned double-tool-post vertical lathe, an auxiliary tightening device is provided on the clamping sliding frame, and the auxiliary tightening device includes a tightening cylinder, a push rod sleeve, and a push rod. The push rod sleeve is slidably installed in the clamping sliding frame and is connected to the tightening cylinder. The push rod is connected to the push rod sleeve. The tightening cylinder drives the push rod sleeve and the push rod to move up and down synchronously, and can tighten the end of the workpiece in the clamping sleeve.

[0012] In the above-mentioned double-tool-post vertical lathe, the clamping and rotating device includes a rotating tensioning cylinder and a tensioning chuck, and the clamping and rotating power device is a rotating tensioning motor, which is transmission-connected to the rotating tensioning cylinder; the tensioning chuck corresponds to the upper and lower positions of the clamping sleeve and the clamping rolling shaft thereon.

[0013] In the above-mentioned double-tool-post vertical lathe, the central axes of the tensioning chuck, the clamping sleeve, the clamping rolling shaft, and the ejector pin are on the same central line.

[0014] In the above-mentioned double-tool-post vertical lathe, a waste lower opening is provided on the bed base box, and a waste placement space corresponding to the waste lower opening is provided in the bed base box.

[0015] The present invention has the following beneficial effects:

[0016] The present invention has a double tool holder structure, in which a left tool holder device and a right tool holder device are separately arranged. During processing, different parts of a workpiece are processed simultaneously according to respective set processing parameters. The position settings and travel paths of the two tool holder devices will not interfere with each other, thereby facilitating processing. Moreover, processing on the workpiece and hole processing at the end can be completed by clamping the workpiece once, and there is no need to clamp the workpiece multiple times, thereby improving processing accuracy and processing efficiency.

[0017] The present invention is also provided with an upper clamping and rotating device, which is correspondingly arranged at the upper position between the two tool holders. Under the premise of not affecting the processing of the workpiece by the two tool holders, the workpiece can be clamped and positioned, so that the workpiece forms double positioning at both ends during the processing, thereby improving the positioning stability of the workpiece processing and further improving the processing accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a stereogram of the present invention;

[0019] Figure 2 It is a three-dimensional diagram of the present invention from another direction;

[0020] Figure 3 is a three-dimensional diagram of the right tool holder device in the present invention;

[0021] Figure 4It is an exploded structural diagram between the upper pressing and rotating device and the auxiliary pressing device in the present invention;

[0022] Figure 5 It is a stereoscopic diagram of the present invention (a state in which a pressing and rotating device and an auxiliary pressing device position a workpiece). DETAILED DESCRIPTION

[0023] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solutions of the present invention, but the present invention is not limited to these embodiments; it should be noted that the directional words in this specification and claims and the above-mentioned drawings, such as the terms "front", "rear", "left", "right", "left", "right", "bottom", "inside", etc., indicating directions and positional relationships are based on the directions or positional relationships shown in the drawings, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and cannot be understood as limiting the specific protection scope of the present invention.

[0024] See also Figures 1 to 5 The present invention provides a double-tool-post vertical lathe, comprising a bed base box 1, a mounting frame 2, a clamping and rotating device 3, a clamping and rotating power device 4, a left tool post device 5, a right tool post device 6, and an upper pressing and rotating device 7; the mounting frame 2 is mounted on the bed base box 1, and the mounting frame 2 is used to install and connect the left tool post device 5, the right tool post device 6, and the upper pressing and rotating device 7;

[0025] The clamping rotation device 3 is fixedly connected to the bed base box 1, and the clamping rotation device 3 includes a rotary tensioning cylinder 8 and a tensioning chuck 9. The clamping rotation power device 4 is fixedly arranged in the bed base box 1; the clamping rotation power device 4 is a rotary tensioning motor, and the rotary tensioning motor is transmission-connected with the rotary tensioning cylinder 8; the workpiece to be processed is placed in the tensioning chuck 9 for clamping and fixing, and the rotary tensioning motor drives the rotary tensioning cylinder 8 to rotate, so that the workpiece rotates to cooperate with the processing; a waste lower opening 10 is provided on the bed base box 1, and a waste placement space 11 corresponding to the waste lower opening 10 is provided in the bed base box 1, and a waste box can be placed in the waste placement space 11 to facilitate the collection and cleaning of processing waste.

[0026] The left tool holder device 5 and the right tool holder device 6 are respectively fixedly connected to the mounting frame 2. The left tool holder device 5 and the right tool holder device 6 are respectively composed of the same structure. The left tool holder device 5 and the right tool holder device 6 respectively include an up and down lifting device 12, a left and right sliding device 13, and a tool fixing module 14;

[0027] The up-and-down lifting device 12 includes a lifting motor 15, a lifting base 16, a lifting motor seat 17, and a lifting screw 18. The lifting base 16 is fixed on the mounting frame 15, the lifting motor seat 17 is fixedly connected to the lifting base 16, the lifting motor 15 is mounted and fixed on the lifting motor seat 17, the lifting screw 18 is mounted on the lifting base 16, and is connected to the lifting motor 15 through a transmission coupling head 19; the lifting base 16 is provided with a lifting rail 20, and the lifting motor 15 drives the left and right sliding devices 13 to move up and down as a whole along the lifting rail 20 through the lifting screw 18;

[0028] The left and right sliding device 13 includes a sliding motor 21, a lifting connection seat 22, a sliding connection seat 23, a sliding motor seat 24, and a sliding screw 25. The lifting connection seat 22 is slidably connected to the lifting base 16 through the lifting rail 20. The lifting connection seat 22 is provided with a lifting screw joint 26 that is transmission-connected to the lifting screw 18. The lifting connection seat 22 is provided with a slide rail plate 27 that forms a positioning sliding connection between the sliding connection seat 23 and the lifting connection seat 22. The sliding connection seat 23 is provided with a slide rail 28; the sliding motor seat 24 is fixedly connected to the sliding connection seat 23, the sliding motor 21 is fixedly mounted on the sliding motor seat 24, the sliding screw 25 is installed on the sliding connection seat 23, and is transmission-connected to the sliding motor 21 through the transmission coupling head 19; the sliding connection seat 23 is provided with a sliding screw joint 29 that is rotationally connected to the sliding screw 25, and the sliding motor 21 drives the sliding connection seat 23 to slide through the sliding screw 25;

[0029] The tool fixing module 14 is installed and connected to the left and right sliding devices 13. The processed tools are fixedly installed at different positions of the tool fixing module 14 according to the processing needs. The up and down lifting devices 12 and the left and right sliding devices 13 move in coordination according to the processing setting parameters, thereby driving the tool fixing module 14 on the sliding connection seat 23 to move and process; at the same time, a cooling cylinder 30 for cooling the tool thereon is installed on the side of the tool fixing module 14; the cooling cylinder 30 is connected to the external oil circuit, and the oil circuit of the cooling cylinder 30 passes through the tool fixing module 14 through the oil spray nozzle to spray oil to cool the tool. The oil spray nozzle is also connected to the tool fixing module, which is not shown in the figure. The tool fixing module is an existing commonly used structure, so it is not introduced in detail here.

[0030] The upper clamping rotating device 7 includes a clamping motor 31, a clamping motor seat 32, a clamping slide frame 33, a clamping sleeve 34, and a clamping screw 35. The clamping motor seat 32 is fixed on the mounting frame 2, and the clamping motor 31 is fixedly connected to the clamping motor seat 32. A clamping slide rail assembly 36 is provided on the mounting frame 2. The clamping slide frame 33 forms a sliding connection with the mounting frame 2 through the clamping slide rail assembly 36. A clamping screw linkage block 37 connected to the clamping screw 35 is provided on the clamping slide frame 33. The clamping screw 35 is transmission-connected to the clamping motor 31 through a transmission coupling head 19; the clamping sleeve 34 is fixedly connected to the clamping slide frame 33, and a clamping rolling shaft 38 is installed and connected at the lower end of the clamping sleeve 34. The clamping rolling shaft 38 includes a fixed clamping sleeve 39 and a dynamic clamping sleeve 40. A ball assembly 38-1 is provided between the fixed clamping sleeves and the dynamic clamping sleeve, thereby forming a clamping rolling shaft;

[0031] After the clamping rotating device 3 clamps and fixes the workpiece, the clamping motor 31 drives the clamping slide frame 33 to move up and down through the clamping screw rod 35, thereby driving the clamping sleeve 34 on the clamping slide frame 33 to move up and down, so that the clamping rolling shaft 38 at the lower end of the clamping sleeve 34 clamps the workpiece on the clamping rotating device 3. At this time, the dynamic clamping sleeve 40 of the clamping rolling shaft 38 presses the workpiece against and rotates synchronously with the workpiece, so that the workpiece rotates relative to the clamping sleeve 34 through the clamping rolling shaft 38, and the upper clamping rotating device 7 raises the workpiece Stability of machining rotation positioning; the clamping sleeve 34 is provided with a tool clearance slot 41, and the tool fixed on the left tool holder device 5 or the right tool holder device 6 can pass through the tool clearance slot 41 and extend into the clamping sleeve 34 to process the part of the workpiece in the clamping sleeve 34; it should be noted here that: the length of the clamping sleeve 34 can be changed according to use, so that the tool clearance slot 41 can be set to a sufficient height, and when the tool is performing hole processing on the end of the workpiece, the upper clamping rotation device does not need to release the clamping of the upper end of the workpiece.

[0032] The clamping slide frame 33 is provided with an auxiliary clamping device 42, which includes a clamping cylinder 43, a push rod sleeve 44, and a push rod 45. The push rod sleeve 44 is slidably installed in the clamping slide frame 33 and is connected to the clamping cylinder 43. The push rod 45 is connected to the push rod sleeve 44. The clamping cylinder 43 drives the push rod sleeve 44 and the push rod 45 to move up and down synchronously, and can clamp the end of the workpiece in the clamping sleeve 34; the auxiliary clamping device 42 can further improve the processing positioning of the workpiece, but when processing holes at the end of the workpiece, the push rod 45 in the auxiliary clamping device 42 must be withdrawn to release the clamping of the workpiece.

[0033] The tensioning chuck 9 corresponds to the clamping sleeve 34 and the clamping rolling shaft 38 thereon in upper and lower positions, and the central axes of the tensioning chuck 9, the clamping sleeve 34, the clamping rolling shaft 38 and the push rod 45 are on the same central line; thereby better ensuring the clamping and positioning of the workpiece.

[0034] The above is a detailed introduction to a double-tool holder vertical lathe provided in an embodiment of the present invention. Specific examples are used in this article to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the technical solutions disclosed by the present invention. At the same time, for those skilled in the art, according to the ideas of the present invention, there will be changes in the specific implementation methods and application scopes. In summary, the content of this specification should not be understood as a limitation of the present invention.

Claims

1. A double-turret vertical lathe, characterized in that: It includes a bed base box, a mounting frame, a clamping and rotating device, a clamping and rotating power device, a left tool holder device, a right tool holder device, and an upper pressing and rotating device; the mounting frame and the clamping and rotating device are fixedly connected to the bed base box, the clamping and rotating device is used to fix the workpiece, and the clamping and rotating power device is fixedly arranged in the bed base box and can drive the clamping and rotating device to tighten and rotate the workpiece; The left tool holder device and the right tool holder device are arranged on the mounting frame and are composed of the same structure. The left tool holder device and the right tool holder device respectively include an up-and-down lifting device, a left-and-right sliding device, and a tool fixing module; the up-and-down lifting device is installed and connected to the mounting frame, the left-and-right sliding device is installed and connected to the up-and-down lifting device, and the tool fixing module is installed and connected to the left-and-right sliding device. The up-and-down lifting device drives the left-and-right sliding device thereon to move up and down, and the left-and-right sliding device drives the tool fixing module thereon to move left and right; the tool fixing module is used to install the tool, and a cooling oil cylinder for cooling the tool thereon is installed on the side of the tool fixing module; The upper pressing and rotating device is connected to the mounting frame and corresponds to the upper and lower positions of the clamping and rotating device. The upper pressing and rotating device can press the workpiece on the clamping and rotating device, and the workpiece can rotate relative to the upper pressing and rotating device during processing; The upper clamping rotating device comprises a clamping motor, a clamping motor seat, a clamping sliding frame, a clamping sleeve, and a clamping screw rod. The clamping motor seat is fixed on the mounting frame, and the clamping motor is fixedly connected to the clamping motor seat. The mounting frame is provided with a clamping slide rail assembly, and the clamping slide rail assembly is slidably connected to the mounting frame through the clamping slide rail assembly. The clamping slide frame is provided with a clamping screw linkage block connected to the clamping screw rod, and the clamping screw rod is transmission-connected to the clamping motor through a transmission coupling head; the clamping sleeve is fixedly connected to the clamping sliding frame The pressing slide frame is provided with an auxiliary tightening device, which includes a tightening cylinder, a push rod sleeve, and a push rod. The push rod sleeve is slidably installed in the pressing slide frame and connected to the tightening cylinder. The push rod is connected to the push rod sleeve. The tightening cylinder drives the push rod sleeve and the push rod to move up and down synchronously, and can tighten the end of the workpiece in the pressing sleeve. The bed base box is provided with a waste lower opening, and the bed base box is provided with a waste placement space corresponding to the waste lower opening.

2. A double-turret vertical lathe according to claim 1, characterized in that: The up and down lifting device includes a lifting motor, a lifting base, a lifting motor seat, and a lifting screw. The lifting base is fixed on the mounting frame, the lifting motor seat is fixedly connected to the lifting base, the lifting motor is installed and fixed on the lifting motor seat, the lifting screw is installed on the lifting base and is connected to the lifting motor through a transmission coupling head; a lifting slide rail is provided on the lifting base, and the lifting motor drives the left and right sliding devices to move up and down as a whole along the lifting slide rail through the lifting screw rod.

3. A double-turret vertical lathe according to claim 1 or 2, characterized in that: The left and right sliding device includes a sliding motor, a lifting connection seat, a sliding connection seat, a sliding motor seat, and a sliding screw. The lifting connection seat forms a sliding connection with the lifting base through a lifting slide rail. The lifting connection seat is provided with a lifting screw joint that is transmission-connected to the lifting screw. The lifting connection seat is provided with a slide rail plate that forms a positioning sliding connection between the sliding connection seat and the lifting screw. The sliding connection seat is provided with a slide rail; the sliding motor seat is fixedly connected to the sliding connection seat, the sliding motor is installed and fixed on the sliding motor seat, the sliding screw is installed on the sliding connection seat and is transmission-connected to the sliding motor through a transmission coupling head; the sliding connection seat is provided with a sliding screw joint that is rotationally connected to the sliding screw, and the sliding motor drives the sliding connection seat to slide through the sliding screw, thereby driving the tool fixing module on the sliding connection seat to move.

4. A double-tool-post vertical lathe according to claim 1, characterized in that: The clamping rotation device includes a rotary tensioning cylinder and a tensioning chuck. The clamping rotation power device is a rotary tensioning motor, which is transmission-connected to the rotary tensioning cylinder. The tensioning chuck corresponds to the upper and lower positions of the clamping sleeve and the clamping rolling shaft thereon.

5. A double-tool-post vertical lathe according to claim 4, characterized in that: The central axes of the tensioning chuck, the pressing sleeve, the pressing rolling shaft and the push rod are on the same central line.

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