Rotary positioning seat of large numerical control machine tool for roller machining

Abstract

The utility model discloses a large numerical control machine tool rotary positioning seat for roller processing, which comprises a base (1), a rotary seat (2) is rotatably connected onto the base (1), a rotary motor (11) is arranged below the base (1), a rotary shaft of the rotary motor (11) penetrates through the base (1) to be connected with the rotary seat (2), and a roller positioning shaft (3) is arranged in the center of the rotary seat (2). A plurality of positioning mechanisms (4) are circumferentially arranged on the periphery of the rotating seat (2) by taking the axis of the roller positioning shaft (3) as a circle center; the positioning mechanism (4) comprises a positioning track, a coarse adjustment support (42) is arranged on the positioning track, and a fine adjustment support (43) is arranged on the coarse adjustment support (42). The utility model has the characteristics that the clamping strength, the stability and the reliability are improved.

Description

Technical Field

[0001] The utility model relates to a machine tool positioning seat, in particular to a large numerical control machine tool rotary positioning seat for roll processing. Background Art

[0002] A numerical control machine tool, also known as a CNC lathe, that is, a computer numerical control lathe, is a very important device in modern manufacturing. It combines computer numerical control technology with traditional machine tools, integrating multiple technologies such as machinery, electricity, hydraulics, pneumatics, microelectronics, and information, achieving efficient and precise automated processing. Roll processing is an important link in the iron and steel metallurgy industry. During the roll processing, the outer circle, end face, grooves, etc. of the roll are usually turned by a numerical control machine tool to achieve rough machining and finish machining of the roll. Currently, the existing numerical control machine tools fix the roll by using a positioning seat. However, for large-sized rolls, due to the large volume and size of the roll, and the positioning components on the positioning seat clamp the roll in an integral fixed manner, the fixation is in place at one time, which is relatively simple and single. After long-term use, it is easy to have shaking, and the maintenance and replacement are troublesome. Therefore, the clamping strength, stability, and reliability of the existing numerical control machine tools for large-sized rolls are still insufficient. Content of the Utility Model

[0003] The purpose of the utility model is to provide a large numerical control machine tool rotary positioning seat for roll processing. The utility model has the characteristics of improving the clamping strength, stability, and reliability.

[0004] The technical solution of the utility model: A large numerical control machine tool rotary positioning seat for roll processing, including a base, a rotary seat is rotatably connected to the base, a rotary motor is arranged below the base, the rotating shaft of the rotary motor passes through the base and is connected to the rotary seat, a roll positioning shaft is arranged at the center of the rotary seat, and a plurality of positioning mechanisms are circumferentially arranged around the periphery of the rotary seat with the axis of the roll positioning shaft as the center; the positioning mechanism includes a positioning track, a coarse adjustment bracket is arranged on the positioning track, and a fine adjustment bracket is arranged on the coarse adjustment bracket.

[0005] In the aforementioned large numerical control machine tool rotary positioning seat for roll processing, the positioning track includes a positioning rack distributed along the radial direction of the rotary seat and sliding grooves on both sides of the positioning rack. The positioning rack is detachably connected to the rotary seat, a positioning gap is formed between adjacent teeth of the positioning rack, the coarse adjustment bracket is slidably connected to the sliding groove through a slider, and a fixing bolt connected in the positioning gap is arranged on the coarse adjustment bracket.

[0006] In the aforementioned large numerical control machine tool rotary positioning seat for roll processing, a linear motor module is arranged inside the coarse adjustment bracket, and the fine adjustment bracket is slidably connected to the linear motor module through a guide block.

[0007] In the large-scale CNC machine tool rotary positioning seat for roll processing described above, an outer positioning block is provided at the end of the fine-tuning bracket, and anti-slip bumps are provided on the outer positioning block.

[0008] In the large-scale CNC machine tool rotary positioning seat for roll processing described above, a number of mounting grooves are provided around the roll positioning shaft, a connecting spring is provided in the mounting groove, and an inner positioning block is provided at the outer end of the connecting spring.

[0009] In the large-scale CNC machine tool rotary positioning seat for roll processing described above, the width of the inner positioning block gradually increases from top to bottom, and an anti-slip pad is provided on the outer side of the inner positioning block.

[0010] In the large-scale CNC machine tool rotary positioning seat for roll processing described above, a number of support frames are provided along the circumferential direction on the periphery of the base. A bottom support plate for supporting the bottom of the base and a side plate for fixing the side of the base are provided inside the support frame. A horizontal long groove is provided on the side plate, and a positioning bolt connected to the support frame is provided in the long groove.

[0011] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0012] In the present utility model, the end shaft hole of the roll is installed on the roll positioning shaft, and then the roll is fixed in multiple directions through a plurality of positioning mechanisms around it. The roll is clamped and fixed from both inside and outside, with a large clamping strength and good stability, facilitating the circumferential rotation processing of the roll driven by the rotary seat; and when the positioning mechanism fixes the roll, it first performs rough adjustment by moving the rough adjustment bracket on the positioning track, and then performs fine adjustment on the roll by moving the fine adjustment bracket on the rough adjustment bracket. The operation is simple, the positioning is accurate, and the clamping stability and reliability are high, thereby improving the processing accuracy. Description of the Drawings

[0013] Figure 1 It is a schematic structural diagram of the rotary seat of the present utility model.

[0014] Figure 2 It is a schematic structural diagram of the positioning mechanism of the present utility model.

[0015] Figure 3 It is a schematic cross-sectional structural diagram of the roll positioning shaft of the present utility model.

[0016] Figure 4 It is a schematic plan structural diagram of the roll positioning shaft of the present utility model.

[0017] Figure 5 It is a schematic structural diagram of the support frame of the present utility model.

[0018] The markings in the attached drawings are as follows: 1, base; 11, rotating motor; 12, support frame; 13, bottom support plate; 14, side plate; 15, long slot; 16, positioning bolt; 2, rotating seat; 3, roll positioning shaft; 31, mounting groove; 32, connecting spring; 33, inner positioning block; 34, anti-slip pad; 4, positioning mechanism; 411, positioning rack; 412, sliding groove; 413, positioning gap; 42, coarse adjustment bracket; 421, slider; 422, fixing bolt; 43, fine adjustment bracket; 431, linear motor module; 432, outer positioning block; 433, anti-slip convex block. Detailed implementation mode

[0019] The following further illustrates the present utility model in conjunction with the attached drawings and embodiments, but it shall not be used as the basis for limiting the present utility model.

[0020] In the description of the present utility model, it should also be noted that unless otherwise clearly specified and limited, the terms "set", "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0021] Embodiment:

[0022] As Figures 1-5 shown, a large CNC machine tool rotating positioning seat for roll processing includes a base 1, a rotating seat 2 is rotatably connected to the base 1, a rotating motor 11 is provided below the base 1, the rotating shaft of the rotating motor 11 passes through the base 1 and is connected to the rotating seat 2, a roll positioning shaft 3 is provided at the center of the rotating seat 2, and a plurality of positioning mechanisms 4 are circumferentially arranged around the rotating seat 2 with the axis of the roll positioning shaft 3 as the center; the positioning mechanism 4 includes a positioning track, a coarse adjustment bracket 42 is provided on the positioning track, and a fine adjustment bracket 43 is provided on the coarse adjustment bracket 42.

[0023] In the present utility model, the end shaft hole of the roll is installed on the roll positioning shaft 3, and then the roll is fixed in multiple directions by a plurality of surrounding positioning mechanisms 4. The roll is clamped and fixed from both inside and outside, with a large clamping strength, which is convenient for the roll to rotate stably in the circumferential direction driven by the rotating seat 2; and when the positioning mechanism 4 fixes the roll, first, the coarse adjustment bracket 42 moves on the positioning track for coarse adjustment, and then the fine adjustment bracket 43 moves on the coarse adjustment bracket 42 to finely adjust the roll. The operation is simple, the positioning is accurate, and the clamping stability and reliability are high, thereby improving the processing accuracy.

[0024] The positioning track includes a positioning rack 411 radially distributed along the rotating base 2 and chutes 412 on both sides of the positioning rack 411. The positioning rack 411 is detachably connected to the rotating base 2. A positioning gap 413 is formed between adjacent teeth of the positioning rack 411. The coarse adjustment bracket 42 is slidably connected to the chutes 412 through sliders 421, and a fixing bolt 422 connected in the positioning gap 413 is provided on the coarse adjustment bracket 42.

[0025] The position of the coarse adjustment bracket 42 is limited by the cooperation of the fixing bolt 422 and the positioning rack 411, which greatly reduces the requirements for the machining of threaded holes and the positions of threaded holes, and realizes universal installation and fixation. Moreover, the positioning rack 411 is detachably connected to the rotating base 2. If the positioning rack 411 is worn, it can be directly removed from the rotating base 2 for replacement, which does not affect the positioning effect, does not require large-scale maintenance, saves time, and has good practical performance.

[0026] A linear motor module 431 is provided inside the coarse adjustment bracket 42. The fine adjustment bracket 43 is slidably connected to the linear motor module 431 through a guide block. The linear motor module 431 includes a motor. The linear motor module 431 is used to drive the fine adjustment bracket 43 to move along the radial direction of the rotating base 2 on the coarse adjustment bracket 42, so as to realize precise fine adjustment and positioning of the roll.

[0027] An outer positioning block 432 is provided at the end of the fine adjustment bracket 43, and an anti-slip convex block 433 is provided on the outer positioning block 432. The outer surface of the roll is clamped and fixed through the cooperation of the outer positioning block 432 and the anti-slip convex block 433, which increases the clamping friction force, makes the positioning of the fine adjustment bracket 43 on the roll more stable, and is not easy to slide or shift.

[0028] A plurality of mounting grooves 31 are provided around the roll positioning shaft 3. A connecting spring 32 is provided in the mounting grooves 31, and an inner positioning block 33 is provided at the outer end of the connecting spring 32. The inner positioning block 33 is connected to the roll positioning shaft 3 through the connecting spring 32. The elastic force of the connecting spring 32 is used to press the inner positioning block 33 against the inner wall of the end shaft hole of the roll. The clamping is reliable, and it can adapt to the end shaft hole diameters of different specifications of rolls, and has a wide application range.

[0029] The width of the inner positioning block 33 gradually increases from top to bottom, and an anti-slip pad 34 is provided on the outer side of the inner positioning block 33. The size design of the inner positioning block 33 facilitates the roll to be sleeved onto the roll positioning shaft 3 from top to bottom. Through the design of the anti-slip pad 34, the friction force between the inner positioning block 33 and the inner wall of the end shaft hole of the roll is increased, and the pressing force is improved.

[0030] A plurality of support frames 12 are provided along the circumferential direction on the periphery of the base 1. A bottom support plate 13 for supporting the bottom of the base 1 and a side plate 14 for fixing the side of the base 1 are provided inside the support frame 12. A horizontal long groove 15 is provided on the side plate 14, and a positioning bolt 16 connected to the support frame 12 is provided in the long groove 15. The support frame 12 supports the base 1 from the bottom and the side of the base 1 through the bottom support plate 13 and the side plate 14 respectively, improving the support stability. Moreover, the position of the side plate 14 can be adjusted horizontally through the design of the long groove 15, so as to facilitate the fixation of bases 1 with different diameters, with convenient adjustment and strong practicability.

[0031] The parts not described in detail in the present utility model are prior art, so they will not be specifically described here.

Claims

1. A large CNC machine tool rotary positioning seat for roller processing, characterized in that: The invention comprises a base (1), a rotating base (2) is rotatably connected to the base (1), a rotating motor (11) is arranged below the base (1), a rotating shaft of the rotating motor (11) passes through the base (1) and is connected to the rotating base (2), a rolling roller positioning shaft (3) is arranged at the center of the rotating base (2), and a plurality of positioning mechanisms (4) are arranged around the rotating base (2) with the axis of the rolling roller positioning shaft (3) as the center of the circle; the positioning mechanism (4) comprises a positioning track, a coarse adjustment bracket (42) is arranged on the positioning track, and a fine adjustment bracket (43) is arranged on the coarse adjustment bracket (42).

2. The large-scale CNC machine tool rotary positioning seat for roller processing according to claim 1 is characterized in that: The positioning track comprises a positioning rack (411) radially distributed along the rotating seat (2) and a slide groove (412) located on both sides of the positioning rack (411); the positioning rack (411) is detachably connected to the rotating seat (2); a positioning gap (413) is formed between adjacent teeth of the positioning rack (411); the coarse adjustment bracket (42) is slidably connected to the slide groove (412) via a slider (421); and a fixing bolt (422) connected to the positioning gap (413) is provided on the coarse adjustment bracket (42).

3. The large-scale CNC machine tool rotary positioning seat for roller processing according to claim 1 is characterized in that: The coarse adjustment bracket (42) is provided with a linear motor module (431), and the fine adjustment bracket (43) is slidably connected to the linear motor module (431) via a guide block.

4. The large-scale CNC machine tool rotary positioning seat for roller processing according to claim 1 is characterized in that: An outer positioning block (432) is provided at the end of the fine-tuning bracket (43), and an anti-slip protrusion (433) is provided on the outer positioning block (432).

5. The large-scale CNC machine tool rotary positioning seat for roller processing according to claim 1 is characterized in that: A plurality of mounting grooves (31) are arranged around the roller positioning shaft (3), a connecting spring (32) is arranged in the mounting groove (31), and an inner positioning block (33) is arranged at the outer end of the connecting spring (32).

6. The large-scale CNC machine tool rotary positioning seat for roller processing according to claim 5 is characterized in that: The width of the inner positioning block (33) gradually increases from top to bottom, and an anti-slip pad (34) is provided on the outer side of the inner positioning block (33).

7. The large-scale CNC machine tool rotary positioning seat for roller processing according to claim 1 is characterized in that: A plurality of support frames (12) are arranged along the circumferential direction on the periphery of the base (1); a bottom support plate (13) supporting the bottom of the base (1) and a side plate (14) fixing the side of the base (1) are arranged on the support frame (12); a transverse long groove (15) is arranged on the side plate (14); and a positioning bolt (16) connected to the support frame (12) is arranged in the long groove (15).

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