A radial run-out suppression device for a spindle of a numerically controlled machine tool

Abstract

The utility model relates to numerical control machine tool technical field, concretely is a kind of radial runout suppression device of numerical control machine tool spindle, including the U-shaped seat, the top of the U-shaped seat is fixedly connected with support cylinder, the inside of support cylinder is provided with centre assembly, the centre assembly includes the movable cylinder of sliding joint with support cylinder, the one end of movable cylinder is rotatably connected with centre body, one end of support cylinder is provided with clamp, the clamp includes the clamping cylinder of rotatable connection with support cylinder.The utility model in, by traditional centre outside still be provided with clamping cylinder, when the one end of part does not satisfy centre installation, can use the inside multiple screw rods of clamping cylinder two cooperation arc plate clamping and fixing the one end of part, certainly for the part still can use centre body to be clamped to the centre hole, to realize clamp and centre assembly cooperation can satisfy the part clamping of the centre hole or not to open the centre hole.

Description

Technical Field

[0001] This utility model relates to the field of CNC machine tool technology, specifically a radial runout suppression device for CNC machine tool spindles. Background Technology

[0002] When machining parts with long axial lengths, the chuck on the spindle of a CNC machine tool usually installs a center at the other end of the part to suppress the radial runout of the spindle. Because of the support of the center, the cutting force on the part during machining will not be fully applied to the spindle, thereby indirectly reducing the extra load on the spindle caused by the deformation of the part and helping to maintain the normal operation of the spindle.

[0003] When installing a center, a center hole needs to be drilled at one end of the part to complete the center installation. For parts that do not have a center hole or do not allow a center hole to be drilled in order to ensure the integrity of the part, the center of the transmission cannot be used as a device to suppress the radial runout of the spindle. Furthermore, for heavier parts, it requires more physical strength from the operator to clamp the part between the center and the spindle. Utility Model Content

[0004] The purpose of this invention is to provide a radial runout suppression device for CNC machine tool spindles to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A radial runout suppression device for a CNC machine tool spindle, comprising:

[0007] An inverted bracket, the top of which is fixed with a support cylinder;

[0008] A center component is arranged inside a support cylinder. The center component includes a movable cylinder that is slidably engaged with the support cylinder. One end of the movable cylinder is rotatably connected to a center body.

[0009] A clamp for holding and fixing parts without a center hole, the clamp including a clamping cylinder rotatably connected to a support cylinder, a plurality of screws 2 rotating inside the clamping cylinder, and an arc-shaped plate rotatably connected to one end of the screws 2;

[0010] A support bracket, placed below the part, can support heavier parts;

[0011] The adjustment mechanism is used to adjust the position of the bracket. The adjustment mechanism includes a telescopic component fixed to the C-shaped base. One end of the telescopic component is rotatably connected to a guide frame. Inside the guide frame, a screw rod capable of driving the bracket to move up and down is rotatably connected.

[0012] Furthermore, the top of the bracket is rotatably connected to a roller, and the outer side of the screw is screwed to a transmission block, which is fixedly connected to the bracket.

[0013] Furthermore, a limiting shaft is fixed on one side of the guide frame and slidably inserted into the inverted bracket, and a base plate is fixed at the bottom of the inverted bracket.

[0014] Furthermore, the telescopic component includes a sleeve fixed to the C-shaped seat, one end of which is screwed to a screw rod three, which is rotatably connected to the guide frame.

[0015] Furthermore, one end of the clamping cylinder is provided with a tapered hole and an annular groove, and one end of the support cylinder is fixed with a rotating ring that is rotatably connected to the annular groove.

[0016] Furthermore, a screw is screwed into the interior of the movable cylinder, and a handwheel is fixed to one end of the screw.

[0017] Furthermore, a sliding groove is provided on the outer side of the movable cylinder, and a positioning block that is slidably connected to the sliding groove is fixed on the inner side of the support cylinder.

[0018] Compared with the prior art, the beneficial effects of this utility model are:

[0019] 1. A clamping cylinder is rotatably connected to one end of the support cylinder. Multiple screws are screwed into the inside of the clamping cylinder. An arc-shaped plate is rotatably connected to the bottom of the screw. When the end of the part cannot have a center hole, the multiple arc-shaped plates can be sleeved on the outside of the part. Then, the multiple screws are rotated to clamp and fix the part. The part can rotate on the support cylinder through the clamping cylinder, which can effectively reduce the cutting force acting on the spindle and prevent the spindle from radially running. When a center hole is opened at one end of the part, the handwheel can be turned to rotate the screw. The movable cylinder screwed to the screw moves the center body to the center hole position of the part. Thus, the suppression device of this application can be used to position and support one end of the part regardless of whether a center hole is opened at the end of the part. This is beneficial to expanding the application scope of the suppression device of this application in suppressing the radial runout of the spindle.

[0020] 2. By setting an adjustment mechanism at one end of the C-shaped base, the support with rollers can be adjusted to be below the part. At this time, the weight of the part is supported on the support, eliminating the need for manual support of heavy parts for clamping operations. During the part processing, the rollers can also be supported below the part. At this time, the rollers can support the part being processed, preventing the part from exerting too much downward pressure on the center and spindle due to excessive weight. To a certain extent, this further prevents the spindle from radially running. Attached Figure Description

[0021] Figure 1This is a schematic diagram of the overall structure of this utility model;

[0022] Figure 2 This is a schematic diagram of the internal structure of the support cylinder in this utility model;

[0023] Figure 3 This is a schematic diagram of the top component structure in this utility model;

[0024] Figure 4 This is a schematic diagram of the positioning mechanism in this utility model.

[0025] In the diagram: 100, C-shaped seat; 110, support cylinder; 111, positioning block; 112, rotating ring; 120, base plate; 200, center assembly; 210, movable cylinder; 211, slide groove; 220, center body; 230, screw one; 231, handwheel; 300, clamp; 310, clamping cylinder; 311, tapered hole; 320, screw two; 330, arc plate; 400, bracket; 410, roller; 500, adjustment mechanism; 510, telescopic component; 511, sleeve; 512, screw three; 513, rotating block; 520, guide frame; 521, screw four; 522, transmission block; 530, limit shaft. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] Example 1, please refer to Figure 1 - Figure 4In this embodiment of the present invention, a radial runout suppression device for a CNC machine tool spindle includes a U-shaped base 100. A support cylinder 110 is fixedly connected to the top of the U-shaped base 100. A center assembly 200 is disposed inside the support cylinder 110. The center assembly 200 includes a movable cylinder 210 that is slidably engaged with the support cylinder 110. A center body 220 is rotatably connected to one end of the movable cylinder 210. A clamp 300 is disposed at one end of the support cylinder 110. The clamp 300 includes a clamping cylinder 310 that is rotatably connected to the support cylinder 110. The cylinder 310 has multiple screws 320 connected in a ring at equal angles inside. One end of each screw 320 is rotatably connected to an arc plate 330. The bottom of the part supports a bracket 400. One side of the bracket 400 is provided with an adjustment mechanism 500 for adjusting the position of the bracket 400. The adjustment mechanism 500 includes a telescopic member 510 fixedly connected to the shaped seat 100. One end of the telescopic member 510 is rotatably connected to a guide frame 520. Inside the guide frame 520, a screw 521 that can drive the bracket 400 to move up and down is rotatably connected.

[0028] Specifically, a clamping sleeve 310 is also provided on the outside of the traditional center. When one end of the part does not meet the requirements for center installation, multiple screws 320 inside the clamping sleeve 310 can be used in conjunction with the arc plate 330 to clamp and fix one end of the part. Of course, for parts with center holes, the center body 220 can still be used for clamping. Thus, the clamp 300 and the center assembly 200 can work together to meet the clamping requirements of parts with or without center holes, thereby improving the applicability of traditional centers in suppressing spindle radial runout. By arranging a bracket 400 under the part to support the part, the manual support of heavy parts for clamping is eliminated, which is conducive to improving the convenience of part clamping. In addition, the rollers 410 on the bracket 400 can support the bottom of heavy parts and also suppress the radial runout of the spindle by reducing the downward pressure of the part on the spindle, which is conducive to maintaining the normal operation of the spindle.

[0029] like Figure 1 As shown, in this embodiment, a roller 410 is rotatably connected to the top of the bracket 400. The roller 410 can support the part under the part during the clamping or turning process, which is conducive to the stable rotation of the part on the spindle.

[0030] like Figure 1 and Figure 4 As shown, in this embodiment, a transmission block 522 is screwed onto the outer side of the screw 421. The transmission block 522 is slidably connected to the guide frame 520 and fixedly connected to the bracket 400. When it is necessary to adjust the support height of the bracket 400 so that the roller 410 supports the part at the axial height of the outer lathe spindle, the screw 421 can be rotated to move the transmission block 522 and the bracket 400 upwards, so that the roller 410 can support the part at the machining station.

[0031] like Figure 2 As shown, in this embodiment, the telescopic member 510 includes a sleeve 511 fixedly connected to the C-shaped seat 100. One end of the sleeve 511 is screwed to a screw rod 512. The screw rod 512 is rotatably connected to the guide frame 520. A limiting shaft 530 that is slidably inserted into the C-shaped seat 100 is fixedly connected to one side of the guide frame 520.

[0032] In this embodiment, when the length of the shaft part is long, the screw 3 512 can be rotated to make it screwed out from inside the sleeve 511. During this process, the screw 3 512 rotates on the guide frame 520, and the limiting shaft 530 slides outward along the C-shaped seat 100, thereby adjusting the length of the guide frame 520 from the bracket 400 to the C-shaped seat 100.

[0033] In this embodiment, a base plate 120 is fixed to the bottom of the C-shaped base 100. The base plate 120 is used to install and fix the entire suppression device onto the machine tool. The specific installation method using existing technology will not be described in detail.

[0034] like Figure 2 As shown, in this embodiment, one end of the clamping cylinder 310 is provided with an annular groove, and one end of the support cylinder 110 is fixed with a rotating ring 112 that is rotatably connected to the annular groove, so that the clamping cylinder 310 can rotate stably at the end of the support cylinder 110.

[0035] like Figure 3 As shown, in this embodiment, a tapered hole 311 is provided at one end of the clamping cylinder 310, and the tip body 220 can pass through the tapered hole 311 and be inserted into the tip hole of the part.

[0036] In this embodiment, a screw 230 is screwed into the interior of the movable cylinder 210. A handwheel 231 is fixedly connected to one end of the screw 230. By turning the handwheel 231 forward and backward, the screw 230 can be rotated in both directions, thereby allowing the movable cylinder 210, which is screwed into the screw 230, to move left and right along the support cylinder 110, so that the tip 220 can be moved to the tip hole position of the part.

[0037] In this embodiment, a sliding groove 211 is provided on the outer side of the movable cylinder 210, and a positioning block 111 is fixedly connected to the inner side of the support cylinder 110 and is slidably connected to the sliding groove 211. The sliding groove 211 and the positioning block 111 slide relative to each other, which allows the movable cylinder 210 to move left and right as the screw 230 rotates and rotates.

[0038] like Figure 2 As shown, in this embodiment, a rotating block 513 is fixed to one end of the screw 3 512, and a rubber sleeve is fixed to the outer side of the rotating block 513. The rotating block 513 allows the user to rotate the screw 3 512.

[0039] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0040] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A radial run-out suppressing device for a spindle of a numerically controlled machine tool, characterized by comprising: include: An inverted bracket (100) has a support cylinder (110) fixed to its top. The tip assembly (200) is arranged inside the support cylinder (110). The tip assembly (200) includes a movable cylinder (210) that is slidably engaged with the support cylinder (110). One end of the movable cylinder (210) is rotatably connected to the tip body (220). The clamp (300) is used to clamp and fix parts without a top hole. The clamp (300) includes a clamping cylinder (310) rotatably connected to the support cylinder (110). The clamping cylinder (310) has a plurality of screws (320) rotatably engaged inside. One end of the screws (320) is rotatably connected to an arc plate (330). A bracket (400) is placed below the part and can support heavier parts; The adjustment mechanism (500) is used to adjust the position of the bracket (400). The adjustment mechanism (500) includes a telescopic member (510) fixed to the shaped seat (100). One end of the telescopic member (510) is rotatably connected to a guide frame (520). Inside the guide frame (520) is a screw four (521) that can drive the bracket (400) to move up and down.

2. The radial run-out suppressing device of a CNC machine tool spindle according to claim 1, characterized in that, A roller (410) is rotatably connected to the top of the bracket (400), and a transmission block (522) is screwed onto the outside of the screw four (521). The transmission block (522) is fixedly connected to the bracket (400).

3. The radial run-out suppressing device of a CNC machine tool spindle according to claim 1, characterized in that, A limiting shaft (530) is fixed on one side of the guide frame (520) and slidably inserted into the incline seat (100), and a base plate (120) is fixed on the bottom of the incline seat (100).

4. The radial run-out suppressing device of a CNC machine tool spindle according to claim 1, characterized in that, The telescopic component (510) includes a sleeve (511) fixed to the shaped seat (100), one end of which is screwed to a screw three (512), and the screw three (512) is rotatably connected to the guide frame (520).

5. The radial run-out suppressing device of a CNC machine tool spindle according to claim 1, characterized in that, One end of the clamping cylinder (310) is provided with a tapered hole (311) and an annular groove, and one end of the support cylinder (110) is fixed with a rotating ring (112) that is rotatably connected to the annular groove.

6. The radial run-out suppressing device of a CNC machine tool spindle according to claim 1, characterized in that, The movable cylinder (210) is internally connected to a screw rod (230), and a handwheel (231) is fixed to one end of the screw rod (230).

7. The radial run-out suppression device of a CNC machine tool spindle according to claim 6, characterized in that The outer side of the movable cylinder (210) is provided with a sliding groove (211), and the inner side of the support cylinder (110) is fixed with a positioning block (111) that is slidably connected to the sliding groove (211).

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