Extending cutter head

Abstract

The utility model relates to the field of machine tools, and discloses an unfolding cutter head which comprises a cutter head body, a lead screw rotationally connected in the cutter head body, a lead screw seat in threaded connection with the lead screw, a sliding disc fixedly connected to the lead screw seat and a cutter arranged on the sliding disc, shaft sections are arranged at the two ends of the lead screw respectively, and supporting mechanisms are arranged on the shaft sections. The supporting mechanism is connected to the cutter head body; the supporting mechanism comprises a first plane thrust ball bearing, a deep groove ball bearing and a second plane thrust ball bearing which are sequentially arranged on the shaft section in a sleeving mode, a locking piece is arranged on the outer side of the second plane thrust ball bearing, the locking piece is connected to the shaft section, a bearing seat is arranged on the periphery of the deep groove ball bearing, and the bearing seat is connected to the cutter head body; a transmission assembly is arranged on the cutter head body, the power output end of the transmission assembly is connected with one shaft section, and the power input end of the transmission assembly is connected with a driving device. And through the arranged supporting mechanism, the rigidity of the lead screw can be greatly improved, and the situation that the machining precision is affected due to deformation of the lead screw in the machining process is avoided.

Description

Technical Field

[0001] The utility model relates to the field of machine tools, in particular to a spreading cutter head. Background Art

[0002] The spreader head is a commonly used cutting tool that realizes the cutting function through the high-speed rotation of the tool.

[0003] The existing spreading cutter head has a cutter that is usually mounted on a slide plate, which is mounted on a nut of a lead screw through a lead screw seat. The lead screw is rotatably connected to the cutter head body. The lead screw is driven to rotate by a driving device, so that the slide plate moves linearly along the axis of the lead screw to adjust the stroke of the cutter.

[0004] During the cutting process, the tool is subjected to a large force, which is transmitted to the lead screw through the slide plate. Since both ends of the lead screw are usually rotatably connected to the cutter head through a single bearing, the lead screw is easily deformed during the processing, which deteriorates the processing accuracy of the tool. Utility Model Content

[0005] Based on the above problems, the purpose of the present invention is to provide a cutting head to solve the above problems in the prior art.

[0006] The utility model adopts the following technical solutions:

[0007] The utility model provides a spreading cutter head, comprising a cutter disc body, a lead screw rotatably connected to the cutter disc body, a lead screw seat threadedly connected to the lead screw, a sliding disc fixedly connected to the lead screw seat, and a cutter arranged on the sliding disc, wherein shaft sections are respectively arranged at both ends of the lead screw, a supporting mechanism is arranged on the shaft section, and the supporting mechanism is connected to the cutter disc body;

[0008] The support mechanism comprises a plane thrust ball bearing 1, a deep groove ball bearing and a plane thrust ball bearing 2 which are sequentially mounted on the shaft section from the inside to the outside, the plane thrust ball bearing 1 abuts against the end face of the lead screw, a locking piece is arranged on the outer side of the plane thrust ball bearing 2, the locking piece is connected to the shaft section, and the locking piece abuts against the outer end face of the plane thrust ball bearing 2; a bearing seat is arranged on the outer periphery of the deep groove ball bearing, the bearing seat is connected to the cutter head body, and the sides of the plane thrust ball bearing 1 and the plane thrust ball bearing 2 which are close to each other abut against the bearing seat and the deep groove ball bearing respectively;

[0009] A transmission assembly is arranged on the cutter head body, a power output end of the transmission assembly is connected to one of the shaft sections, and a power input end of the transmission assembly is connected to a driving device.

[0010] Furthermore, the transmission assembly includes a bevel gear mounted on one of the shaft segments, the bevel gear is located on the inner side of the planar thrust ball bearing one, and its two sides are respectively against the end face of the screw and the planar thrust ball bearing one; the bevel gear is dynamically connected to the spur gear through a double gear, the double gear and the spur gear are rotatably connected to the cutter disc body through shaft one and shaft two, respectively, and the drive device is dynamically connected to shaft two.

[0011] Furthermore, the locking member is configured as a locking nut, and the locking nut is threadedly connected to the shaft segment.

[0012] Furthermore, the driving device is provided with a power head, and the output shaft of the power head is dynamically connected to the second shaft.

[0013] Compared with the prior art, the beneficial technical effects of the utility model are:

[0014] By setting up the supporting mechanism, the rigidity of the lead screw can be greatly improved, and the situation in which the lead screw is deformed during the processing and the processing accuracy is affected is avoided. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The utility model will be further described below in conjunction with the accompanying drawings.

[0016] Figure 1 It is a cross-sectional view of the cutter head of the utility model.

[0017] Explanation of the reference numerals in the accompanying drawings: 1. cutter head body; 2. lead screw; 201. shaft section; 3. lead screw seat; 4. sliding plate; 5. supporting mechanism; 51. plane thrust ball bearing one; 52. deep groove ball bearing; 53. plane thrust ball bearing two; 54. locking piece; 55. bearing seat; 6. transmission assembly; 61. bevel gear; 62. duplex gear; 63. spur gear; 64. shaft one; 65. shaft two. DETAILED DESCRIPTION

[0018] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments.

[0019] like Figure 1As shown, the present embodiment discloses a spreading cutter head, comprising a cutter disc body 1, a lead screw 2 rotatably connected to the cutter disc body 1, a lead screw seat 3 threadedly connected to the lead screw 2, a slide plate 4 fixedly connected to the lead screw seat 3, and a tool arranged on the slide plate 4, wherein shaft sections 201 are respectively arranged at both ends of the lead screw 2, a support mechanism 5 is arranged on the shaft section 201, and the support mechanism 5 is connected to the cutter disc body 1; the support mechanism 5 comprises a plane thrust ball bearing 1 51, a deep groove ball bearing 52 and a plane thrust ball bearing 2 53 which are sequentially mounted on the shaft section 201 from the inside to the outside, and the plane thrust ball bearing 1 51 is against the end face of the lead screw 2. A locking piece 54 is provided on the outer side of the plane thrust ball bearing 2 53, and the locking piece 54 is connected to the shaft section 201, and the locking piece 54 abuts against the outer end surface of the plane thrust ball bearing 2 53; a bearing seat 55 is provided on the outer periphery of the deep groove ball bearing 52, and the bearing seat 55 is connected to the cutter head body 1, and the plane thrust ball bearing 1 51 and the plane thrust ball bearing 2 53 are respectively abutted against the bearing seat 55 and the deep groove ball bearing 52 on their sides close to each other; a transmission assembly 6 is provided on the cutter head body 1, and the power output end of the transmission assembly 6 is connected to one of the shaft sections 201, and the power input end of the transmission assembly 6 is connected to the driving device.

[0020] In this embodiment, the sides of the plane thrust ball bearing 1 51 and the plane thrust ball bearing 2 53 that are close to each other are both loose rings, and the sides of the plane thrust ball bearing 1 51 and the plane thrust ball bearing 2 53 that are away from each other are both tight rings, that is, the locking member 54 abuts against the tight ring of the plane thrust ball bearing 2 53, and the tight ring of the plane thrust ball bearing 1 51 abuts against the end face of the screw 2; the loose rings of the plane thrust ball bearing 1 51 and the plane thrust ball bearing 2 53 abut against the outer ends of the bearing seat 55 and the deep groove ball bearing 52 respectively. The locking member 54 is configured as a locking nut, which is threadedly connected to the shaft section 201; the bearing seat 55 is fixed to the cutter head body 1 by bolts; when the lead screw 2 rotates, the locking member 54, the tightening ring of the plane thrust ball bearing 2 53, the tightening ring of the plane thrust ball bearing 1 51 and the inner ring of the deep groove ball bearing 52 rotate with the lead screw 2; the loose ring of the plane thrust ball bearing 2 53, the loose ring of the plane thrust ball bearing 1 51, the outer ring of the deep groove ball bearing 52 and the bearing seat 55 do not rotate.

[0021] By adopting this solution, the rigidity of the lead screw 2 can be greatly improved by providing the support mechanism 5, thereby avoiding the situation in which the lead screw 2 is deformed during the processing and thus affects the processing accuracy.

[0022] A further optimized solution is that the transmission assembly 6 includes a bevel gear 61 mounted on one of the shaft sections 201, the bevel gear 61 is located on the inner side of the planar thrust ball bearing 51, and the two sides of the bevel gear 61 are respectively against the end face of the screw 2 and the tight ring of the planar thrust ball bearing 51; the bevel gear 61 is dynamically connected to the spur gear 63 through the double gear 62, the double gear 62 and the spur gear 63 are rotationally connected to the cutter disc body 1 through the shaft 1 64 and the shaft 2 65 respectively, and the driving device is dynamically connected to the shaft 2 65.

[0023] In the present embodiment, the double gear 62 is configured as a double gear of bevel gear + spur gear, the bevel gear 61 is meshedly connected with the bevel gear end on the double gear 62, shaft one 64 is fixed on the cutter disc body 1, and the double gear 62 is rotatably sleeved on shaft one 64; the spur gear end on the double gear 62 is meshedly connected with the spur gear 63, the spur gear 63 is fixedly sleeved on shaft two 65, and shaft two 65 is rotatably connected to the cutter disc body 1; the driving device is a power head, and the output shaft of the power head is power-connected with shaft two 65; the power head is prior art, and its working principle and method of use are all known, which will not be repeated here; the driving device drives shaft two 65 and spur gear 63 to rotate, the spur gear 63 drives the double gear 62 to rotate, and the double gear 62 drives the bevel gear 61 to rotate, which can achieve the effect of driving the lead screw 2 to rotate clockwise or counterclockwise.

[0024] The embodiments described above are only descriptions of the preferred methods of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should fall within the protection scope determined by the claims of the present invention.

Claims

1. A tool spreading head, comprising a cutter disc body (1), a lead screw (2) rotatably connected to the cutter disc body (1), a lead screw seat (3) threadedly connected to the lead screw (2), a slide plate (4) fixedly connected to the lead screw seat (3), and a tool arranged on the slide plate (4), characterized in that: The two ends of the lead screw (2) are respectively provided with shaft sections (201), the shaft sections (201) are provided with support mechanisms (5), and the support mechanisms (5) are connected to the cutter head body (1); The support mechanism (5) comprises a planar thrust ball bearing (51), a deep groove ball bearing (52) and a planar thrust ball bearing (53) which are sequentially mounted on the shaft section (201) from the inside to the outside, the planar thrust ball bearing (51) abuts against the end face of the lead screw (2), a locking piece (54) is arranged on the outer side of the planar thrust ball bearing (53), the locking piece (54) is connected to the shaft section (201), and the locking piece (54) abuts against the outer end face of the planar thrust ball bearing (53); a bearing seat (55) is arranged on the outer periphery of the deep groove ball bearing (52), the bearing seat (55) is connected to the cutter head body (1), and the sides of the planar thrust ball bearing (51) and the planar thrust ball bearing (53) which are close to each other abut against the bearing seat (55) and the deep groove ball bearing (52) respectively; A transmission assembly (6) is provided on the cutter head body (1), a power output end of the transmission assembly (6) is connected to one of the shaft sections (201), and a power input end of the transmission assembly (6) is connected to a driving device.

2. The spreading cutter head according to claim 1, characterized in that: The transmission assembly (6) comprises a bevel gear (61) sleeved on one of the shaft sections (201); the bevel gear (61) is located on the inner side of the planar thrust ball bearing (51), and its two sides are respectively against the end surface of the lead screw (2) and the planar thrust ball bearing (51); the bevel gear (61) is dynamically connected to the spur gear (63) via a double gear (62); the double gear (62) and the spur gear (63) are rotatably connected to the cutter head body (1) via shaft one (64) and shaft two (65), respectively, and the driving device is dynamically connected to shaft two (65).

3. The spreading cutter head according to claim 1, characterized in that: The locking member (54) is configured as a locking nut, and the locking nut is threadedly connected to the shaft section (201).

4. The spreading cutter head according to claim 2, characterized in that: The driving device is provided with a power head, and the output shaft of the power head is connected to the second shaft (65) in a power manner.

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