Rapid tool bit fixing mechanism for machining

Abstract

The utility model relates to the technical field of precision machining, and discloses a quick tool bit fixing mechanism for machining, which comprises a spring chuck, a supporting mechanism is arranged on the back of the spring chuck, a locking mechanism is arranged on the front of the spring chuck, the spring chuck comprises a conical head and a conical tail, and the conical head is connected with the locking mechanism. The conical head is located on the front face of the spring chuck, the conical tail is located on the back face of the spring chuck, a clamping groove is formed between the conical head and the conical tail, the supporting mechanism comprises a supporting unit, a positioning unit and an abutting unit, the supporting unit is located on the outer back face of the spring chuck, the positioning unit is located in the supporting unit, and the abutting unit abuts against the supporting unit. The abutting unit is arranged on the back face of the inner ring of the supporting unit. According to the rapid tool bit fixing mechanism for machining, the tool bit can be clamped by the spring chuck in one step through the supporting mechanism and the locking mechanism, and the tool bit is not prone to loosening, so that the steps are simplified, and the efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of precision machining, in particular to a tool head quick fixing mechanism for machining. Background Art

[0002] Precision machining is a process of changing the size or performance of a workpiece using machining machinery. A spring chuck is a device used to clamp and fix a workpiece, commonly used in machine tools, machining centers and other precision machining equipment.

[0003] A spring chuck clamping mechanism with announcement number CN216680280U comprises a limit fixing block, a transverse limit sleeve, a metal limit ring and a hexagon socket fastening bolt, a spring chuck is arranged at the right end of the limit fixing block, a metal drill bit is clamped in the spring chuck, and the left end of the metal drill bit passes through and is located in the limit fixing block, the transverse limit sleeve is transversely fixed in the middle of the left end surface inside the limit fixing block, a longitudinal circular fixing sheet, a small compression spring and a shock-absorbing rubber sheet are respectively arranged inside the transverse limit sleeve, and two metal limit rings of equal specifications are arranged, both of which are located inside the limit fixing block, and shock-absorbing rubber rings are fixed inside the two metal limit rings. This design solves the problem that the clamping limit degree of the original device is not high enough and the clamping part of the milling drill bit is prone to wear. The utility model has reasonable structure, high clamping limit degree, strong practicability, good clamping effect, and will not cause wear at the clamping part of the metal drill bit.

[0004] The above-mentioned spring chuck clamping mechanism still needs to be operated through multiple steps when clamping the cutter head, which is time-consuming. Improvements can be made to this problem. Utility Model Content

[0005] The purpose of the utility model is to provide a tool head quick fixing mechanism for mechanical processing to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solution: a tool head quick fixing mechanism for machining, comprising a spring chuck, a supporting mechanism is arranged on the back of the spring chuck, and a locking mechanism is arranged on the front of the spring chuck.

[0007] The spring chuck comprises a cone head and a cone tail, wherein the cone head is located at the front of the spring chuck, and the cone tail is located at the back of the spring chuck, and a clamping groove is arranged between the cone head and the cone tail.

[0008] The support mechanism comprises a support unit, a positioning unit and a pressing unit. The support unit is located on the outer back side of the spring clamp, the positioning unit is located inside the support unit, and the pressing unit is arranged on the inner circle back side of the support unit.

[0009] The support unit comprises a sleeve and a mounting buckle. The sleeve is sleeved on the back of the cone tail. There are four mounting buckles in total and they are fixedly connected to the four corners of the front side of the sleeve outer ring respectively.

[0010] The positioning unit includes positioning bars, which are four in total and are respectively located at the four corners of the back side of the sleeve. Positioning grooves are provided at the four corners of the back side of the cone tail. The positioning grooves are connected to the rolling grooves. The positions of the rolling grooves correspond to the balls, and the positions of the positioning grooves correspond to the positioning bars, so that the cone tail can be inserted into the sleeve and find its position through the positioning bars, and the rolling grooves can be automatically aligned with the balls, thereby facilitating the subsequent pressing of the cone tail against the balls.

[0011] The pressing unit comprises a support seat and a ball. The support seat is fixedly connected to the inner wall of the sleeve near the back, and the ball is rollingly connected to the inner side of the support seat through a support frame. Rolling grooves are provided at the four corners of the outer ring of the cone tail.

[0012] Preferably, the locking mechanism includes a locking cap and a retaining ring, the locking cap is sleeved on the front side of the cone head and threadedly connected to the front side of the outer ring of the sleeve, the retaining ring is fixedly connected to the middle part of the inner ring of the locking cap, and a clamping groove is provided on the inner front side of the locking cap. The clamping groove is conical and the outward expansion angle matches the inclination of the outer ring of the cone head, and the depth of the clamping groove is slightly greater than the length of the cone head.

[0013] Compared with the prior art, the utility model provides a tool head quick fixing mechanism for mechanical processing, which has the following beneficial effects:

[0014] 1. The tool head quick fixing mechanism for machining can clamp the tool head with a spring chuck in one step through a supporting mechanism and a locking mechanism, and it is not easy to loosen, thereby simplifying the steps and improving efficiency.

[0015] 2. The tool head quick fixing mechanism for machining is not easy to cause wear because it presses against the conical tail of the spring chuck through the cooperation of the ball and the groove, thereby extending the service life of the spring chuck and saving maintenance costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the front structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the internal right side structure of the sleeve of the utility model;

[0018] Figure 3 for Figure 2 The enlarged structural diagram at A in the middle;

[0019] Figure 4 It is a right side cross-sectional structural schematic diagram of the locking mechanism in the utility model.

[0020] In the figure: 1. spring chuck; 101. cone head; 102. cone tail; 103. clamping groove; 2. supporting mechanism; 201. sleeve; 202. mounting buckle; 203. positioning strip; 204. positioning groove; 205. supporting seat; 206. ball; 207. rolling groove; 3. locking mechanism; 301. locking cap; 302. retaining ring; 303. clamping groove. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like 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 a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0023] See also Figure 1-4 The utility model provides a technical solution: a tool head quick fixing mechanism for mechanical processing, including a spring chuck 1, the spring chuck 1 includes a cone head 101 and a cone tail 102, the cone head 101 is located on the front side of the spring chuck 1, the cone tail 102 is located on the back side of the spring chuck 1, and a clamping groove 103 is arranged between the cone head 101 and the cone tail 102.

[0024] A support mechanism 2 is provided on the back of the spring chuck 1. The support mechanism 2 includes a support unit, a positioning unit and a tightening unit. The support unit is located on the outer back of the spring chuck 1, the positioning unit is located inside the support unit, and the tightening unit is provided on the back of the inner ring of the support unit. The support unit includes a sleeve 201 and a mounting buckle 202. The sleeve 201 is sleeved on the back of the cone tail 102. There are four mounting buckles 202 and they are fixedly connected to the four corners of the front of the outer ring of the sleeve 201. The positioning unit includes a positioning bar 203. There are four positioning bars 203 and they are located at the four corners of the inner back of the sleeve 201. The four corners of the back of the cone tail 102 are provided with positioning Groove 204, the pressing unit includes a support seat 205 and a ball 206, the support seat 205 is fixedly connected to the inner wall of the sleeve 201 near the back, the ball 206 is rollingly connected to the inner side of the support seat 205 through a support frame, and rolling grooves 207 are provided at the four corners of the outer ring of the cone tail 102, the positioning groove 204 is connected to the rolling groove 207, the position of the rolling groove 207 corresponds to the ball 206, and the position of the positioning groove 204 corresponds to the positioning strip 203, so that the cone tail 102 can be inserted into the sleeve 201 and find its position through the positioning strip 203, and automatically align the rolling groove 207 with the ball 206, so as to facilitate the subsequent pressing of the cone tail 102 by the ball 206.

[0025] A locking mechanism 3 is provided on the front side of the spring chuck 1, and the locking mechanism 3 includes a locking cap 301 and a snap ring 302. The locking cap 301 is sleeved on the front side of the cone head 101 and is threadedly connected to the front side of the outer ring of the sleeve 201. The snap ring 302 is fixedly connected to the middle part of the inner ring of the locking cap 301. A clamping groove 303 is provided on the front side of the inner part of the locking cap 301. The clamping groove 303 is conical and the outward expansion angle matches the inclination of the outer ring of the cone head 101, and the depth of the clamping groove 303 is slightly larger than the length of the cone head 101. The spring chuck 1 can clamp the tool head in one step through the supporting mechanism 2 and the locking mechanism 3, and it is not easy to loosen, thereby simplifying the steps and improving the efficiency. Since the ball 206 and the rolling groove 207 cooperate to press against the cone tail 102 of the spring chuck 1, it is not easy to cause wear, thereby extending the service life of the spring chuck 1 and saving maintenance costs.

[0026] In actual operation, when the device is used, the sleeve 201 is fixed on the tool holder of the lathe through the mounting buckle 202, the cone head 101 of the spring chuck 1 passes over the clamping ring 302 and is inserted into the pressing groove 303 of the locking cap 301, and then the cone tail 102 of the spring chuck 1 is inserted into the sleeve 201 with the locking cap 301, and the locking cap 301 is twisted to fix the spring chuck 1 and the locking cap 301 on the sleeve 201, and the tool head is fixed. The tool handle is inserted into the center hole of the spring chuck 1 until it is pressed against the inner back of the sleeve 201, and then the locking cap 301 is tightened. As the locking cap 301 presses the cone head 101, the spring chuck 1 is driven to move deeper into the sleeve 201 as a whole, so that the outer wall of the cone tail 102 is gradually pressed against by the ball 206, and the cone tail 102 also shrinks and clamps the tool handle of the tool head, and the cone head 101 also clamps the middle section of the tool handle, so that the tool head is more stable after being clamped.

[0027] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the statement "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

Claims

1. A tool head quick fixing mechanism for machining, comprising a spring chuck (1), characterized in that: A supporting mechanism (2) is provided on the back of the spring chuck (1), and a locking mechanism (3) is provided on the front of the spring chuck (1); The spring chuck (1) comprises a cone head (101) and a cone tail (102), wherein the cone head (101) is located on the front side of the spring chuck (1), and the cone tail (102) is located on the back side of the spring chuck (1), and a clamping groove (103) is provided between the cone head (101) and the cone tail (102); The support mechanism (2) comprises a support unit, a positioning unit and a tightening unit, wherein the support unit is located on the outer back side of the spring chuck (1), the positioning unit is located inside the support unit, and the tightening unit is arranged on the back side of the inner ring of the support unit; the support unit comprises a sleeve (201) and a mounting buckle (202), the sleeve (201) is sleeved on the back side of the cone tail (102), and a total of four mounting buckles (202) are arranged and are respectively fixedly connected to the four corners of the front side of the outer ring of the sleeve (201); The positioning unit comprises positioning bars (203), wherein four positioning bars (203) are provided and are respectively located at four corners of the inner back side of the sleeve (201); positioning grooves (204) are provided at four corners of the back side of the cone tail (102); the positioning grooves (204) are connected to the rolling grooves (207); the position of the rolling grooves (207) corresponds to the ball bearings (206); and the position of the positioning grooves (204) corresponds to the positioning bars (203); The abutting unit comprises a support seat (205) and a ball (206); the support seat (205) is fixedly connected to the inner wall of the sleeve (201) near the back; the ball (206) is rollingly connected to the inner side of the support seat (205) via a support frame; and rolling grooves (207) are provided at four corners of the outer ring of the cone tail (102).

2. The tool head quick fixing mechanism for machining according to claim 1, characterized in that: The locking mechanism (3) comprises a locking cap (301) and a snap ring (302); the locking cap (301) is sleeved on the front of the cone head (101) and is threadedly connected to the front of the outer ring of the sleeve (201); the snap ring (302) is fixedly connected to the middle of the inner ring of the locking cap (301); a clamping groove (303) is provided on the inner front of the locking cap (301); the clamping groove (303) is conical and has an outward expansion angle that matches the inclination of the outer ring of the cone head (101); and the depth of the clamping groove (303) is slightly greater than the length of the cone head (101).

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