Two-stage cutter handle for coaxiality machining

Abstract

The utility model discloses a two-stage cutter handle for coaxiality processing, which comprises a fixed seat, a cutter inserting hole for installing a cutter for coaxiality processing is arranged in the middle of the bottom end of the fixed seat, a rotary locking mechanism is arranged on the upper portion of the fixed seat, and a limiting mechanism is further arranged on the fixed seat and located on the upper side of the rotary locking mechanism. The two-stage cutter handle has the beneficial effects that the rotary locking mechanism and the limiting mechanism are mounted on the fixed seat, so that when the two-stage cutter handle for coaxiality machining is used, the conical surface screw sleeve can be rotated by rotating a deflector rod on the rotary locking mechanism, and the conical surface block can slide into the accommodating groove while the conical surface screw sleeve rotates; according to the two-stage cutter handle, the conical surface threaded sleeve is arranged on the conical surface threaded sleeve, so that the sliding rod and the arc-shaped clamping plate are driven to reliably clamp the coaxiality machining cutter, the conical surface threaded sleeve can be limited to loosen by means of the limiting mechanism after locking, the cutter is prevented from falling off in the machining process, and the coaxiality machining cutter is more reliably fixed through the two-stage cutter handle.

Description

Technical Field

[0001] The utility model relates to the technical field of tool handles for coaxiality processing, in particular to a two-stage tool handle for coaxiality processing. Background Art

[0002] When turning shaft parts on CNC machine tools, it is often necessary to use a two-stage tool holder to fix the processing tool to ensure the coaxiality processing accuracy of the shaft parts.

[0003] At present, the two-stage tool holder used for fixing the coaxial machining tool on the CNC machine tool is mainly composed of a tool holder body, an oil chamber opened in the tool holder plate, an expansion wall reserved in the tool holder and a pressure bolt installed on the tool holder body for sealing the oil end. When in use, the two-stage tool holder with this structure mainly expands the expansion wall by introducing hydraulic oil into the oil chamber, so as to reliably clamp and fix the tool with the help of the expansion wall. However, during use, the two-stage tool holder for coaxial machining with this structure may have a problem that the clamping force of the two-stage tool holder on the tool becomes smaller due to a failure of the hydraulic system on the machine tool, and then the tool falls off, making the two-stage tool holder not reliable enough to fix the coaxial machining tool. Utility Model Content

[0004] 1. Technical issues to be resolved

[0005] The technical problem to be solved by the utility model is to provide a two-stage tool holder for coaxial machining that can reliably clamp and fix a tool for coaxial machining by rotating and pressing to prevent the tool from falling off during machining.

[0006] (II) Technical solution

[0007] The utility model is realized by the following technical scheme: the utility model proposes a two-stage tool handle for coaxial machining, comprising a fixed seat, a tool insertion hole for installing a tool for coaxial machining is opened in the middle of the bottom end of the fixed seat, a rotation locking mechanism is installed on the upper part of the fixed seat, and a limiting mechanism is also installed on the upper side of the rotation locking mechanism on the fixed seat, wherein the rotation locking mechanism comprises a threaded portion formed on the upper outer part of the fixed seat, a conical screw sleeve installed on the threaded portion, four levers installed in an annular shape on the outer wall of the conical screw sleeve, three conical blocks arranged in an annular shape on the inner side of the conical screw sleeve, and a limit mechanism installed on the upper side of the conical screw sleeve. A sliding rod on the side of the surface block facing away from the conical surface sleeve, an arc-shaped clamping plate installed on the end of the sliding rod away from the conical surface block, a friction pad installed on the clamping wall of the arc-shaped clamping plate, a receiving groove provided on the fixed seat facing the conical surface block, a spring installed in the receiving groove, and a groove provided on the fixed seat at the arc-shaped clamping plate. The limiting mechanism includes a guide groove in an annular shape provided on the fixed seat and located on the upper side of the threaded portion, a sliding gear ring slidingly cooperating with the guide groove, a reset spring installed on the upper side of the sliding gear ring, an insertion rod installed on the lower side of the sliding gear ring, and a socket provided on the conical surface sleeve.

[0008] Furthermore, an assembly head is formed on the top of the fixing seat and is fixedly matched with a locking component on a CNC machine tool.

[0009] By adopting the above technical solution, the assembly head can realize the reliable installation and fixation of the two-stage tool holder for coaxiality processing on the CNC machine tool.

[0010] Furthermore, the groove is formed on the fixing seat, and the groove is communicated with the interior of the tool insertion hole.

[0011] By adopting the above technical solution, the groove is mainly used to achieve the storage of the arc-shaped clamping plate in an unclamped state.

[0012] Furthermore, the arc-shaped clamping plate is slidably connected to the tool insertion hole, the friction pad is bonded to the arc-shaped clamping plate, and the friction pad is a rubber pad.

[0013] By adopting the above technical solution, the friction pad can effectively increase the friction between the arc-shaped clamping plate and the coaxiality processing tool, thereby preventing the coaxiality processing tool from sliding relative to the arc-shaped clamping plate during clamping.

[0014] Furthermore, the slide rod passes through the storage groove and the side wall of the fixing seat, and the slide rod is locked and fixed to the arc-shaped clamping plate.

[0015] By adopting the above technical solution, the arc-shaped clamping plate can be synchronously moved when the sliding rod moves.

[0016] Furthermore, the slide rod passes through the spring, and the spring is sleeved between the conical block and the receiving groove.

[0017] By adopting the above technical solution, the spring is mainly used to realize the automatic resetting of the arc-shaped clamping plate in the unclamped state.

[0018] Furthermore, the slope of the conical surface block matches the slope inside the conical surface screw sleeve.

[0019] By adopting the above technical solution, it can be ensured that the conical surface block can slide into the receiving groove when the conical surface screw sleeve moves downward along the fixing seat.

[0020] Furthermore, the conical surface screw sleeve is screwed to the threaded portion, and the shift rod is welded to the conical surface screw sleeve.

[0021] By adopting the above technical solution, the conical threaded sleeve can be automatically locked after rotation by adopting threaded connection.

[0022] (III) Beneficial effects

[0023] Compared with the prior art, the utility model has the following beneficial effects:

[0024] In order to solve the problem that the two-stage tool holder used for fixing the coaxial machining tool on the current CNC machine tool mainly consists of a tool holder body, an oil chamber opened in the tool holder plate body, an expansion wall reserved in the tool holder, and a pressure bolt installed on the tool holder body for sealing the oil end. When in use, the two-stage tool holder of this structure mainly expands the expansion wall by introducing hydraulic oil into the oil chamber, so as to reliably clamp and fix the tool with the help of the expansion wall. However, during use, the two-stage tool holder for coaxial machining of this structure has the problem that the clamping force of the two-stage tool holder on the tool becomes weaker due to the failure of the hydraulic system of the machine tool, and then the tool falls off. The problem that the two-stage tool holder is not reliable enough in fixing the coaxiality processing tool is solved. The utility model installs a rotary locking mechanism and a limit mechanism on the fixed seat, so that the two-stage tool holder for coaxiality processing can rotate the conical screw sleeve by rotating the lever on the rotary locking mechanism when in use, so that the conical block slides into the storage groove while the conical screw sleeve rotates, thereby driving the slide rod and the arc clamping plate to reliably clamp the coaxiality processing tool, and after locking, the limit mechanism can be used to limit the loosening of the conical screw sleeve to prevent the tool from falling off during the processing, so that the two-stage tool holder can fix the coaxiality processing tool more reliably. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a structural schematic diagram of a two-stage tool handle for coaxial processing described in the utility model;

[0026] Figure 2 It is a main sectional view of a two-stage tool handle processed with coaxiality according to the utility model;

[0027] Figure 3 The utility model is a two-stage tool holder for coaxial processing. Figure 2 Enlarged view of point A in the middle.

[0028] The following are the descriptions of the reference numerals:

[0029] 1. Assembly head; 2. Fixed seat; 3. Rotary locking mechanism; 301. Push rod; 302. Conical screw sleeve; 303. Threaded portion; 304. Conical block; 305. Spring; 306. Sliding rod; 307. Friction pad; 308. Arc clamp; 309. Storage slot; 3010. Groove; 4. Tool insertion hole; 5. Limiting mechanism; 501. Sliding gear ring; 502. Reset spring; 503. Guide groove; 504. Insert rod; 505. Insert hole. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0031] like Figure 1-Figure 3As shown, a two-stage tool holder for coaxial machining in this embodiment includes a fixed seat 2, a tool insertion hole 4 for installing a coaxial machining tool is opened in the middle of the bottom end of the fixed seat 2, a rotation locking mechanism 3 is installed on the upper part of the fixed seat 2, and a limit mechanism 5 is also installed on the upper side of the rotation locking mechanism 3 on the fixed seat 2, wherein the rotation locking mechanism 3 includes a threaded portion 303 formed on the upper outer part of the fixed seat 2, a conical screw sleeve 302 installed on the threaded portion 303, four levers 301 annularly installed on the outer wall of the conical screw sleeve 302, and three conical screws 301 annularly arranged on the inner side of the conical screw sleeve 302. The conical block 304, a slide bar 306 installed on the side of the conical block 304 facing away from the conical screw sleeve 302, an arc-shaped clamping plate 308 installed on the end of the slide bar 306 away from the conical block 304, a friction pad 307 installed on the clamping wall of the arc-shaped clamping plate 308, a receiving groove 309 provided on the fixed seat 2 facing the conical block 304, a spring 305 installed in the receiving groove 309 and a groove 3010 provided on the fixed seat 2 at the arc-shaped clamping plate 308. The friction pad 307 can effectively increase the friction between the arc-shaped clamping plate 308 and the coaxiality processing tool to avoid the coaxiality processing tool from being clamped. The tool slides relative to the arc clamping plate 308. The spring 305 is mainly used to realize the automatic reset of the arc clamping plate 308 in the unclamped state. When the coaxial machining tool is inserted into the tool socket, the conical screw sleeve 302 is rotated along the fixed seat 2 by means of the lever 301, so that the conical block 304 can slide into the storage groove 309. While sliding, the conical block 304 will clamp the arc clamping plate 308 on the coaxial machining tool with the help of the slide bar 306 to realize the clamping and fixing of the coaxial machining tool. The limiting mechanism 5 includes a guide ring shaped and arranged on the upper side of the threaded portion on the fixed seat. The guide groove 503, the sliding toothed ring 501 that slides with the guide groove 503, the reset spring 502 installed on the upper side of the sliding toothed ring 501, the plug rod 504 installed on the lower side of the sliding toothed ring 501 and the socket 505 opened on the conical screw sleeve 302. When locked, the plug rod 504 can be inserted into the socket 505 under the action of the reset spring 502, so as to limit the loosening of the conical screw sleeve 302 after rotation. When the conical screw sleeve 302 is in use, the plug rod 504 and the socket 505 are staggered to ensure that the plug rod 504 can be accurately aligned with the socket 505 after rotation.

[0032] like Figure 1-Figure 2 As shown, in this embodiment, an assembly head 1 that cooperates with a locking component on a CNC machine tool is formed on the top of the fixing seat 2. The assembly head 1 can realize reliable installation and fixation of the two-stage tool holder for coaxial processing on the CNC machine tool.

[0033] like Figure 1-Figure 3As shown, in this embodiment, the groove 3010 is formed on the fixed seat 2, and the groove 3010 is connected to the inside of the tool socket 4. The groove 3010 is mainly used to realize the storage of the arc clamping plate 308 in an unclamped state. The arc clamping plate 308 is slidingly connected to the tool socket 4, and the friction pad 307 is bonded to the arc clamping plate 308, and the friction pad 307 is a rubber pad.

[0034] like Figure 1-Figure 3 As shown, in the present embodiment, the slide bar 306 passes through the receiving groove 309 and the side wall of the fixed seat 2, and the slide bar 306 is locked and fixed with the arc clamping plate 308. When the slide bar 306 moves, the arc clamping plate 308 will move synchronously. The slide bar 306 passes through the spring 305, and the spring 305 is sleeved between the conical block 304 and the receiving groove 309. The inclination of the conical block 304 matches the inclination of the conical screw sleeve 302, which can ensure that the conical block 304 can slide into the receiving groove 309 when the conical screw sleeve 302 moves down along the fixed seat 2. The conical screw sleeve 302 is screwed to the threaded portion 303, and the lever 301 is welded to the conical screw sleeve 302. The threaded connection can realize the automatic locking of the conical screw sleeve 302 after rotation.

[0035] The specific implementation process of this embodiment is as follows: when in use, the two-stage tool holder for coaxiality processing is first connected to the mounting seat on the CNC machine tool with the help of the assembly head 1, and then the coaxiality processing tool is inserted into the prop socket, and the conical screw sleeve 302 is rotated by the lever 301 to move down along the fixed seat 2, so that the conical block 304 can slide into the storage groove 309. While sliding, the conical block 304 will clamp the arc clamping plate 308 on the coaxiality processing tool with the help of the slide rod 306 to achieve clamping and fixing of the coaxiality processing tool, and after locking, the loosening of the conical screw sleeve 302 can be limited by the limit mechanism 5. Since the risk of the coaxiality processing tool falling off due to a hydraulic system failure on the device can be effectively avoided under this clamping and locking mode, the fixation of the coaxiality processing tool by the two-stage tool holder for coaxiality processing is more reliable.

[0036] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A two-stage tool holder for coaxial machining, characterized in that: The invention comprises a fixed seat (2), wherein a tool insertion hole (4) for installing a tool for coaxial machining is provided at the middle of the bottom end of the fixed seat (2), a rotation locking mechanism (3) is installed at the upper part of the fixed seat (2), and a limiting mechanism (5) is also installed on the fixed seat (2) at the upper side of the rotation locking mechanism (3), wherein the rotation locking mechanism (3) comprises a threaded portion (303) formed on the upper outer part of the fixed seat (2), a conical screw sleeve (302) installed on the threaded portion (303), four levers (301) installed in an annular shape on the outer wall of the conical screw sleeve (302), three conical blocks (304) arranged in an annular shape on the inner side of the conical screw sleeve (302), a sliding rod (306) installed on the side of the conical block (304) facing away from the conical screw sleeve (302), and a sliding rod (306) installed on the sliding rod (306) away from the conical block (30 4) an arc-shaped clamping plate (308) at one end, a friction pad (307) mounted on the clamping wall of the arc-shaped clamping plate (308), a receiving groove (309) provided on the fixing seat (2) directly facing the conical block (304), a spring (305) installed in the receiving groove (309), and a groove (3010) provided on the fixing seat (2) and located at the arc-shaped clamping plate (308), the limiting mechanism (5) comprising a guide groove (503) provided in an annular shape on the fixing seat (2) and located on the upper side of the threaded portion (303), a sliding toothed ring (501) slidingly cooperated with the guide groove (503), a return spring (502) installed on the upper side of the sliding toothed ring (501), an insertion rod (504) installed on the lower side of the sliding toothed ring (501), and a plug hole (505) provided on the conical screw sleeve (302).

2. A two-stage tool holder for coaxial machining according to claim 1, characterized in that: The top end of the fixing seat (2) is formed with an assembly head (1) which cooperates with and is fixed to a locking component on a numerically controlled machine tool.

3. A two-stage tool holder for coaxial machining according to claim 1, characterized in that: The groove (3010) is formed on the fixing seat (2), and the groove (3010) is connected to the inside of the tool insertion hole (4).

4. A two-stage tool holder for coaxial machining according to claim 1, characterized in that: The arc-shaped clamping plate (308) is slidably connected to the tool insertion hole (4), the friction pad (307) is bonded to the arc-shaped clamping plate (308), and the friction pad (307) is a rubber pad.

5. The two-stage tool holder for coaxial machining according to claim 1, characterized in that: The sliding rod (306) passes through the storage groove (309) and the side wall of the fixing seat (2), and the sliding rod (306) is locked and fixed with the arc-shaped clamping plate (308).

6. The two-stage tool holder for coaxial machining according to claim 1, characterized in that: The sliding rod (306) passes through the spring (305), and the spring (305) is sleeved between the conical block (304) and the receiving groove (309).

7. The two-stage tool holder for coaxial machining according to claim 1, characterized in that: The slope of the conical surface block (304) matches the slope inside the conical surface screw sleeve (302).

8. The two-stage tool holder for coaxial machining according to claim 1, characterized in that: The conical thread sleeve (302) is screwed to the threaded portion (303), and the shifting rod (301) is welded to the conical thread sleeve (302).

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