Automatic lathe

Abstract

The utility model relates to a precision automatic lathe which comprises a feeding channel and a chuck arranged at the tail end of the feeding channel and further comprises an auxiliary clamping driving source and an auxiliary clamping assembly arranged in the feeding channel, and the auxiliary clamping driving source is used for driving the auxiliary clamping assembly to conduct auxiliary bearing and clamping on a workpiece. By designing the double clamping assemblies and the auxiliary clamping assembly to conduct auxiliary clamping and bearing on the workpiece, the clamping stability of the workpiece can be improved, the machining precision of the workpiece is improved, and the machining efficiency is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of processing equipment, in particular to a walking center machine. BACKGROUND

[0002] The walking center machine belongs to precision machining equipment, and can complete combined machining such as turning, milling, drilling, boring, tapping and carving at the same time, and is mainly used for batch machining of precision hardware, shafts and other special-shaped non-standard parts.

[0003] In the prior art, the walking center machine includes a chuck at the machining end, and the chuck clamps the workpiece to be machined. When the workpiece to be machined is long, only relying on the chuck to clamp is not stable enough, and the workpiece will tilt under the action of gravity, which is prone to machining errors or even eccentric machining. CONTENT OF THE UTILITY MODEL

[0004] In order to solve the technical problem that the walking center machine in the prior art only relies on the chuck to clamp the workpiece and is prone to machining errors, the present application provides a walking center machine.

[0005] The walking center machine provided by the present application adopts the following technical scheme:

[0006] The walking center machine includes a feeding channel and a chuck at the end of the feeding channel, and further includes an auxiliary clamping driving source and an auxiliary clamping assembly arranged in the feeding channel. The auxiliary clamping driving source is used to drive the auxiliary clamping assembly to clamp and support the workpiece.

[0007] By adopting the above technical scheme, the double clamping assembly is designed, and the auxiliary clamping assembly is added on the basis of the traditional chuck. The auxiliary clamping assembly clamps and supports the workpiece, which can improve the clamping stability of the workpiece, improve the machining precision of the workpiece, realize continuous conveying and machining of long rod materials or even a whole roll of rod materials, and greatly improve the machining efficiency.

[0008] Optionally, the auxiliary clamping assembly includes a clamping jaw, the clamping jaw includes a plurality of clamping pieces distributed circumferentially around the workpiece in the feeding channel, and an auxiliary clamping cavity for accommodating the workpiece is formed by surrounding the plurality of clamping pieces. The plurality of clamping pieces are used to clamp the workpiece.

[0009] By adopting the above technical scheme, when the clamping pieces are clamped, the volume of the auxiliary clamping cavity is reduced, the clamping jaw clamps and supports the workpiece, the clamping stability of the workpiece is improved, the clamping pieces clamp the workpiece circumferentially, the contact area between the clamping pieces and the workpiece is large, and the clamping effect is good.

[0010] Optionally, the auxiliary clamping assembly further comprises a clamping sleeve, the clamping sleeve is sleeved on the clamping jaw, the clamping pieces are arranged on the end of the clamping sleeve, and the side wall of the clamping piece is provided with a resisting slope for resisting the end of the clamping sleeve to guide the clamping pieces to close.

[0011] By adopting the above technical scheme, the end of the clamping sleeve is resisted by the resisting slope on the clamping piece through the relative movement of the clamping jaw and the clamping sleeve, so that the clamping pieces are closed to clamp the workpiece, and the layout of the auxiliary clamping driving source and the transmission between the auxiliary clamping driving source and the clamping jaw are facilitated.

[0012] Optionally, the inner wall surface of the clamping sleeve is provided with a clamping slope matched with the resisting slope, the clamping slope is consistent with the inclination direction of the resisting slope, and the clamping slope is matched with the resisting slope to close the clamping pieces.

[0013] By adopting the above technical scheme, the clamping slope and the resisting slope are matched and resisted on the inner wall of the clamping sleeve, the contact area between the clamping sleeve and the resisting slope is increased, the resisting slope is uniformly stressed, the service life of the clamping jaw is improved, and the clamping stability of the clamping jaw is improved.

[0014] Optionally, the auxiliary clamping driving source comprises a driving member and a driving seat, the driving member is slidingly arranged on the driving seat, the clamping sleeve is arranged on the driving seat, the auxiliary clamping assembly further comprises a pull pipe, the clamping jaw is arranged on the pull pipe, the pull pipe is provided with a feeding cavity for accommodating the workpiece, the feeding cavity is communicated with the auxiliary clamping cavity, the pull pipe is arranged on the driving member, and the driving member is used to drive the pull pipe and the clamping jaw to move.

[0015] By adopting the above technical scheme, the clamping jaw and the pull pipe are fixed, the pull pipe is fixed on the driving member, the clamping sleeve is fixed on the driving seat, the clamping jaw is slidingly arranged in the clamping sleeve by the driving member, and the assembly of the clamping sleeve, the pull pipe and the clamping jaw is facilitated.

[0016] Optionally, a bearing seat is further provided, the bearing seat is provided with a bearing, and the bearing sleeve and the pull pipe are rotatably arranged on the bearing seat through the bearing.

[0017] By adopting the above technical scheme, the bearing sleeve and the pull pipe are rotated to drive the workpiece to rotate, the cutting tool remains stationary, the workpiece can be machined by turning and milling, and the machining efficiency is improved.

[0018] Optionally, a limiting structure is further provided, the limiting structure is used to fix the bearing on the bearing seat, a flange is arranged on the auxiliary clamping driving source, and the limiting structure comprises a limiting boss arranged on the flange and used to clamp and limit the bearing.

[0019] By adopting the technical scheme, the limiting structure limits and fixes the bearing in the axial direction, ensures that the bearing can work normally, the flange is arranged on the auxiliary clamping driving source, the limiting boss on the flange can limit the bearing, the limiting boss structure is simple, convenient to process, reduces the processing cost, and the limiting effect on the bearing is good.

[0020] Optionally, the limiting structure further comprises a shaft ring, the limiting boss comprises a large-diameter section and a small-diameter section, the bearing is sleeved on the small-diameter section, the small-diameter section is sleeved on the pull pipe, and the large-diameter section and the shaft ring are both sleeved on the small-diameter section to clamp and fix the bearing.

[0021] By adopting the technical scheme, the limiting boss on the flange cooperates with the shaft ring to clamp and fix the bearing, the limiting effect is good, the limiting boss can not only realize the rotation of the clamping sleeve and the pull pipe, but also can limit the bearing, and the shaft ring is a standard part, which is convenient to process or purchase and reduces the processing cost.

[0022] Optionally, it further comprises a discharging assembly, the discharging assembly comprises a discharging driving source, a discharging chuck and a clamping driving source, the discharging driving source is used to drive the discharging chuck to move along the workpiece in the direction of approaching or moving away from the chuck, and the clamping driving source is used to drive the discharging chuck to clamp the workpiece.

[0023] By adopting the technical scheme, after the workpiece is processed, the discharging chuck is driven by the discharging driving source to approach the chuck, the processed workpiece section is inserted into the discharging chuck, the discharging chuck is clamped by the clamping driving source, the discharging chuck is driven by the discharging driving source to move away from the chuck, the workpiece is pulled out of the chuck by a proper distance, and finally the workpiece is cut by the cutter, realizing the automatic separation of the processed workpiece and the long material.

[0024] Optionally, the discharging assembly further comprises a pushing driving source, and the pushing driving source is used to drive the workpiece to separate from the discharging chuck.

[0025] By adopting the technical scheme, after the processed workpiece is cut, the workpiece is pushed out of the chuck by the pushing driving source, realizing the automatic discharging.

[0026] In summary, the present application has the following at least one beneficial technical effect:

[0027] 1. The workpiece clamping stability can be improved, the workpiece processing precision can be improved, and the processing efficiency can be improved.

[0028] 2. The layout of the auxiliary clamping driving source and the transmission of the auxiliary clamping driving source and the clamping jaw are facilitated.

[0029] 3. The clamping slope increases the contact area between the clamping sleeve and the abutting slope, so that the abutting slope is uniformly stressed, the service life of the clamping jaw is improved, and the clamping stability of the clamping jaw is improved. BRIEF DESCRIPTION OF DRAWINGS

[0030] Figure 1 is a structural schematic view of the feeding assembly in the application.

[0031] Figure 2 is a sectional view along Figure 1 A-A in FIG.

[0032] Figure 3 is an enlarged view at B in Figure 2 FIG.

[0033] Figure 4 is an enlarged view at C in Figure 2 FIG.

[0034] Figure 5 is a structural schematic view of the application.

[0035] BRIEF DESCRIPTION OF DRAWINGS 1. feeding channel; 2. chuck; 3. auxiliary clamping driving source; 31. driving piece; 32. driving seat; 4. auxiliary clamping assembly; 41. clamping jaw; 411. clamping piece; 412. auxiliary clamping cavity; 413. abutting slope; 414. mounting portion; 42. clamping sleeve; 421. clamping slope; 43. pipe drawing; 431. feeding cavity; 5. bearing seat; 51. bearing; 52. mounting cavity; 6. limiting structure; 61. limiting boss; 611. large diameter section; 612. small diameter section; 613. through end; 62. shaft ring; 63. locking nut; 64. mounting boss; 7. flange; 8. discharging assembly; 81. discharging driving source; 82. discharging chuck; 83. clamping driving source; 84. pushing driving source; 85. mounting plate; 9. feeding assembly. DETAILED DESCRIPTION

[0036] The following will be described in detail in combination with the accompanying Figures 1-5 The application will be further described in detail.

[0037] The application discloses a heart machine. Referring to Figure 1 and Figure 2 , comprising a feeding assembly 9, the feeding assembly 9 comprises a feeding channel 1 and a chuck 2 located at the end of the feeding channel 1, the chuck 2 clamps the workpiece, the feeding assembly 9 further comprises an auxiliary clamping driving source 3 and an auxiliary clamping assembly 4 arranged in the feeding channel 1, the auxiliary clamping driving source 3 is used to drive the auxiliary clamping assembly 4 to clamp and support the workpiece.

[0038] Referring to Figure 2 and Figure 3The auxiliary clamping assembly 4 comprises a clamping jaw 41, the clamping jaw 41 comprises a mounting portion 414 and a plurality of clamping pieces 411 integrally formed on the mounting portion 414, the plurality of clamping pieces 411 are distributed circumferentially around the workpiece in the feeding channel 1, and an auxiliary clamping cavity 412 for accommodating the workpiece is formed between the plurality of clamping pieces 411. The clamping piece 411 is made of elastic material, one end of the clamping piece 411 is fixedly connected to the end of the mounting portion 414, and the clamping piece 411 swings around the end as a fulcrum to close the workpiece. When the plurality of clamping pieces 411 are closed, the diameter of the auxiliary clamping cavity 412 is slightly larger than the diameter of the workpiece, and the outer circumferential surface of the workpiece is in clearance fit with the inner wall of the auxiliary clamping cavity 412. The auxiliary clamping cavity 412 does not affect the continuous feeding of the workpiece on the basis of supporting the workpiece.

[0039] Referring to Figure 2 With Figure 3 , the auxiliary clamping assembly 4 further comprises a pull tube 43, the pull tube 43 extends along the axial direction of the workpiece, and the mounting portion 414 is located on the side of the clamping piece 411 close to the pull tube 43. The pull tube 43 and the mounting portion 414 are provided with a feeding cavity 431 extending along the axial direction of the workpiece, and the feeding cavity 431 is in communication with the auxiliary clamping cavity 412. The outer circumferential surface of the mounting portion 414 is provided with external threads, and the inner wall of the feeding cavity 431 at the end of the pull tube 43 is provided with internal threads. The clamping jaw 41 and the pull tube 43 are fixedly connected through the external threads and the internal threads.

[0040] Referring to Figure 2 With Figure 3 , the auxiliary clamping assembly 4 further comprises a clamping sleeve 42, the clamping sleeve 42 is sleeved on the clamping jaw 41 and the pull tube 43, and the clamping piece 411 penetrates through the clamping sleeve 42. An inclined abutting slope 413 is formed on the outer wall of the clamping piece 411, and the abutting slope 413 is inclined along the direction of being closer to the central axis of the feeding cavity 431 as it is closer to the pull tube 43. An inner wall of the feeding cavity 431 at an end of the clamping sleeve 42 through which the clamping piece 411 penetrates is formed with a clamping slope 421, and the inclination direction of the clamping slope 421 is consistent with the inclination direction of the abutting slope 413. The clamping slope 421 is formed by chamfering process. The clamping slope 421 and the abutting slope 413 are in abutting contact to close the clamping piece 411.

[0041] Referring to Figure 1 With Figure 2 , the auxiliary clamping driving source 3 comprises a driving piece 31 and a driving seat 32, and the driving piece 31 is slidably installed on the driving seat 32 along the axial direction of the workpiece. The pull tube 43 is fixedly connected with the driving piece 31, and the driving piece 31 drives the pull tube 43 to slide in the feeding channel 1. The flange 7 is fixedly installed on the driving seat 32, and the driving seat 32 and the flange 7 are both provided with the feeding cavity 431. The clamping sleeve 42 is threadedly connected with the flange 7.

[0042] Referring to Figure 2 With Figure 3The feeding assembly 9 further comprises a bearing seat 5, the bearing seat 5 is provided with a mounting cavity 52, two bearings 51 are press-fitted in the mounting cavity 52, and the clamping sleeve 42 and the pull tube 43 are rotatably installed on the bearing seat 5 through the bearings 51.

[0043] With reference to Figure 3 And Figure 4 The feeding assembly 9 further comprises a limiting structure 6, the limiting structure 6 is used for fixing the bearings 51 on the bearing seat 5. The limiting structure 6 comprises a mounting boss 64 which is integrally formed on the inner wall of the mounting cavity 52, the two bearings 51 are respectively arranged on the two sides of the mounting boss 64, and the two ends of the two bearings 51 which are close to each other respectively abut against the two side walls of the mounting boss 64, so as to limit the two bearings 51.

[0044] With reference to Figure 2 And Figure 3 The limiting structure 6 further comprises a limiting boss 61 which is integrally formed on the flange 7, and the limiting boss 61 is located on the side of the flange 7 which is away from the auxiliary clamping driving source 3. The limiting boss 61 comprises a large-diameter section 611 and a small-diameter section 612 which are connected, and the small-diameter section 612 is located on the side of the large-diameter section 611 which is away from the auxiliary clamping driving source 3. The small-diameter section 612 is press-fitted in the inner ring of the bearing 51, and the small-diameter section 612 is sleeved on the pull tube 43. The end of the large-diameter section 611 which is connected with the small-diameter section 612 abuts against the end of the bearing 51, so as to fix one of the bearings 51.

[0045] With reference to Figure 3 The small-diameter section 612 comprises a penetrating end 613 which penetrates through the bearing seat 5, and the clamping sleeve 42 is threadedly connected with the penetrating end 613 of the small-diameter section 612. The limiting structure 6 further comprises a collar 62 which is sleeved on the small-diameter section 612 and a locking nut 63 which is threadedly connected with the penetrating end 613. The locking nut 63 is used for being screwed on the penetrating end 613, so that the collar 62 abuts against the end of the other bearing 51, and the other bearing 51 is fixed.

[0046] With reference to Figure 5 The feeding assembly 9 further comprises a feeding assembly 8, the feeding assembly 8 comprises a feeding driving source 81, a feeding chuck 82 and a clamping driving source 83, the driving rod of the feeding driving source 81 is connected with a mounting plate 85, the feeding chuck 82 and the clamping driving source 83 are fixedly installed on the mounting plate 85, the feeding driving source 81 drives the mounting plate to move, so as to drive the feeding chuck 82 to move along the axial direction of the workpiece towards the direction of approaching or moving away from the chuck 2, and the clamping driving source 83 drives the feeding chuck 82 to clamp the workpiece, wherein the clamping mode of the feeding chuck 82 is similar to that of the auxiliary clamping assembly 4.

[0047] With reference to Figure 5The blanking assembly 8 further comprises a pushing driving source 84 fixedly installed on the mounting plate 85. The pushing driving source 84 is an electric push rod. The driving rod of the pushing driving source 84 is used to abut against the workpiece and push the workpiece to move along the axial direction of the chuck 2 towards the chuck to be separated from the blanking chuck 82, thus completing the blanking.

[0048] The working principle of the heart machine is as follows: first, the workpiece enters the feeding cavity 431, passes through the auxiliary clamping cavity 412, and passes out of the chuck 2. At this time, the driving member 31 moves away from the chuck 2, and drives the pull tube 43 and the clamping jaw 41 to move. The abutting inclined surface 413 on the clamping piece 411 abuts against the end of the clamping sleeve 42. The clamping piece 411 moves towards the clamping sleeve 42 and is folded until the abutting inclined surface 413 and the clamping inclined surface 421 are in close contact. The auxiliary clamping cavity 412 supports the workpiece, and the chuck 2 clamps the workpiece. After the workpiece is processed, the blanking driving source 81 drives the blanking chuck 82 to move close to the chuck 2, so that the processed workpiece segment extends into the blanking chuck 82. The clamping driving source 83 drives the blanking chuck 82 to clamp the workpiece. The blanking driving source 81 drives the blanking chuck 82 to move away from the chuck 2, so that the workpiece is pulled out of the chuck 2 by a proper distance. The workpiece is cut by a cutter. Finally, the pushing driving source 84 pushes the workpiece out of the blanking chuck 82, thus realizing the blanking of the workpiece.

[0049] The above are preferred embodiments of the present application, and do not limit the protection scope of the present application. Therefore, equivalent changes made on the basis of the structure, shape, and principle of the present application should be covered within the protection scope of the present application.

Claims

1. A screw machine characterized by: The utility model provides a workpiece auxiliary clamping device, including the feeding channel (1) with the chuck (2) located in the end of feeding channel (1), still include auxiliary clamping drive source (3) and be located in the auxiliary clamping assembly (4) of feeding channel (1) in, auxiliary clamping drive source (3) is used for driving auxiliary clamping assembly (4) to carry out auxiliary support clamping to workpiece.

2. The machine of claim 1 wherein: The auxiliary clamping assembly (4) includes a clamping jaw (41), the clamping jaw (41) includes a plurality of clamping pieces (411) distributed circumferentially around the workpiece in the feeding channel (1), a plurality of clamping pieces (411) are formed around the auxiliary clamping cavity (412) for accommodating the workpiece, and a plurality of clamping pieces (411) are used to close and hold the workpiece.

3. The machine of claim 2 wherein: The auxiliary clamping assembly (4) further includes a clamping sleeve (42), the clamping sleeve (42) is sleeved on the clamping jaw (41), the clamping pieces (411) pass out from the end of the clamping sleeve (42), the side wall of the clamping piece (411) is formed with a resisting slope (413), and the end of the clamping sleeve (42) is used to guide the closing of a plurality of clamping pieces (411).

4. The machine of claim 3 wherein: The inner wall surface of the clamping sleeve (42) is formed with a clamping slope (421) matched with the resisting slope (413).

5. The machine of claim 3 wherein: The auxiliary clamping drive source (3) includes a driving member (31) and a driving seat (32), the driving member (31) is slidably arranged on the driving seat (32), the clamping sleeve (42) is arranged on the driving seat (32), the auxiliary clamping assembly (4) further includes a pull tube (43), the clamping jaw (41) is arranged on the pull tube (43), the pull tube (43) is provided with a feeding cavity (431) for accommodating the workpiece, the feeding cavity (431) is communicated with the auxiliary clamping cavity (412), the pull tube (43) is arranged on the driving member (31), and the driving member (31) is used to drive the movement of the pull tube (43) and the clamping jaw (41).

6. The machine of claim 5 wherein: Further comprising a bearing seat (5), the bearing seat (5) is provided with a bearing (51), and the clamping sleeve (42) and the pull tube (43) are rotatably arranged on the bearing seat (5) through the bearing (51).

7. The machine of claim 6 wherein: Further comprising a limiting structure (6), the limiting structure (6) is used for fixing the bearing (51) on the bearing seat (5), and the auxiliary clamping drive source (3) is provided with a flange (7), the limiting structure (6) includes a limiting boss (61) arranged on the flange (7), and the limiting boss (61) is used for clamping and limiting the bearing (51).

8. The machine of claim 7 wherein: The limiting structure (6) further includes a shaft ring (62), the limiting boss (61) includes a large diameter section (611) and a small diameter section (612), the bearing (51) is sleeved on the small diameter section (612), the small diameter section (612) is sleeved on the pull tube (43), and the large diameter section (611) and the shaft ring (62) are both sleeved on the small diameter section (612) to clamp and fix the bearing (51).

9. The machine of claim 1 wherein: The blanking assembly (8) further comprises a blanking drive source (81) for driving the blanking chuck (82) to move along the workpiece axial direction towards or away from the chuck (2), and a clamping drive source (83) for driving the blanking chuck (82) to clamp the workpiece.

10. The machine of claim 9, wherein: The blanking assembly (8) further comprises a pushing drive source (84) for driving the workpiece to be separated from the blanking chuck (82).

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