Quick tool changing mechanism for boring tool

Abstract

The utility model relates to the technical field of tool clamping and fixing devices, in particular to a boring tool quick tool changing mechanism which comprises a tool bar, a tool bit fixed at the front end of the tool bar and a tool apron used for being connected with the tool bar, a connecting end block is coaxially fixed to the end, away from the tool bit, of the tool bar, and the end face of the connecting end block is coaxially and fixedly connected with a connecting shaft. At least two embedding grooves extending in the axial direction are formed in the connecting end block in the circumferential direction of the connecting end block, a first inserting groove is formed in the surface of the connecting shaft, and the tool apron at least comprises a limiting sleeve capable of sliding in the axial direction and being connected with the embedding grooves in an embedded mode to limit circumferential rotation of the tool bar and a fixing piece capable of being inserted into and pulled out of the first inserting groove in the radial direction to limit axial movement of the tool bar. Circumferential rotation and axial movement of the cutter bar are limited through the limiting sleeve and the retention piece respectively, rapid assembly is achieved, rapid dismounting and replacement can be achieved, and machining efficiency is not delayed; and the position of the limiting sleeve in the axial direction is limited through the arc-shaped plate, the fixing piece is limited by the outer sleeve to be separated from the arc-shaped positioning groove, and the stability of the assembled boring cutter is high.

Description

Technical Field

[0001] The utility model relates to the technical field of tool clamping devices, in particular to a boring tool quick tool changing mechanism. Background Art

[0002] In the processing of complex structural parts, such as the internal hole processing of motor housing, efficient and precise processing technology is one of the key factors to improve production efficiency and product quality. Traditional processing technology is often limited by the geometric size and structural complexity of the workpiece, especially when processing large-size and deep-hole parts. Not only is the processing difficult, but the replacement and repositioning of tools after processing has become an important bottleneck restricting production efficiency.

[0003] Previous boring tool designs often focused on improving processing depth and processing accuracy, but were insufficient in terms of fast tool change and reduced tool setting time. The traditional tool change process is cumbersome and requires manual adjustment of the tool position, which is not only time-consuming and labor-intensive, but may also affect processing accuracy, because each tool change requires re-setting the tool to ensure the continuity and consistency of processing. This inefficient tool change method directly leads to low production efficiency, increases production costs, and may introduce human errors due to frequent manual intervention. Utility Model Content

[0004] 1. Technical issues to be solved

[0005] The utility model aims to provide a boring tool quick tool changing mechanism, which can quickly assemble the boring tool bar, has high assembly stability, can be quickly disassembled and replaced, and does not delay processing efficiency.

[0006] 2. Technical Solution

[0007] The utility model is realized by the following technical solutions:

[0008] The utility model proposes a quick tool changing mechanism for a boring tool, comprising a tool rod, a tool head fixed to the front end of the tool rod, and a tool seat for connecting the tool rod, wherein a connecting end block is coaxially fixed to one end of the tool rod away from the tool head, the end face of the connecting end block is coaxially fixedly connected to a connecting shaft, the connecting end block is circumferentially provided with at least two axially extending engaging grooves, the surface of the connecting shaft is provided with a first slot, the tool seat at least comprises a limiting sleeve that can slide axially and engage with the engaging groove to limit the circumferential rotation of the tool rod, and a retaining member that can be radially inserted and pulled out of the first slot to limit the axial movement of the tool rod.

[0009] Furthermore, the tool holder also includes a seat body, which includes a mounting block, a threaded column fixed on the mounting block, and a positioning column coaxially fixedly connected to the end face of the threaded column, the surface of the positioning column is provided with a plurality of axially extending sliding grooves around its circumference, a sliding ridge slidably connected to the sliding groove is fixedly provided on the inner wall of the limit sleeve, and the limit sleeve has an outwardly protruding engaging arc plate engaged with the engaging groove on one end face facing the tool rod.

[0010] Furthermore, a positioning hole is provided on the end face of the positioning column, the connecting shaft is plugged and connected to the positioning hole, an arc-shaped positioning groove is provided on the surface of the positioning column, and a second slot that passes through the positioning hole is provided on the bottom surface of the arc-shaped positioning groove, and the retaining member includes an arc-shaped plate engaged with the arc-shaped positioning groove, and an insert block fixed to the inner wall of the arc-shaped plate, and the insert block can pass through the second slot and extend into the first slot to limit the axial movement of the tool rod.

[0011] Furthermore, when the arc-shaped plate is engaged in the arc-shaped positioning groove, one end surface of the arc-shaped plate contacts the end surface of the limiting sleeve and limits the axial movement of the limiting sleeve.

[0012] Furthermore, the tool holder also includes an outer sleeve, which includes a threaded section with an internal thread on the inner wall and threadedly connected to the threaded column, and a smooth section tightly and slidingly connected to the positioning column. The outer sleeve can be rotated and sleeved on the outside of the arc plate to limit the arc plate from detaching from the arc positioning groove in the radial direction.

[0013] Furthermore, the plurality of engaging grooves are evenly and equidistantly distributed around the circumference of the connecting end block, and the plurality of sliding grooves are evenly and equidistantly distributed around the circumference of the positioning column.

[0014] 3. Beneficial Effects

[0015] Compared with the prior art, the utility model has the following beneficial effects:

[0016] The utility model effectively controls the freedom of movement of the tool rod, and the synergistic effect of the limit sleeve and the retaining piece constitutes an efficient constraint mechanism: the limit sleeve slides along the axial direction of the tool rod and precisely engages with the engaging groove, effectively inhibiting the circumferential rotation of the tool rod, and the retaining piece is radially inserted into the first slot of the connecting shaft, which firmly limits the axial displacement of the tool rod, simplifies the assembly process of the tool, realizes rapid assembly, and ensures the continuity and high efficiency of the overall processing efficiency; and the limit sleeve is limited in the axial position by the arc plate, and the outer sleeve limits the fixing piece from being separated from the arc positioning groove, so that the boring tool has high stability after assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0018] Figure 2 yes Figure 1 Exploded diagram of

[0019] Figure 3 Figure 1 A partial cross-sectional view of

[0020] Figure 4 It is a schematic diagram of the structure of the knife holder and the retaining parts;

[0021] Figure 5 It is a schematic diagram of the structure of the tool bar;

[0022] Figure 6 It is a structural schematic diagram of the limit sleeve;

[0023] 1. Tool bar; 2. Tool head; 3. Tool seat; 31. Seat body; 311. Mounting block; 312. Threaded column; 313. Positioning column; 3131. Slide groove; 3132. Positioning hole; 3133. Arc-shaped positioning groove; 3134. Second slot; 32. Limit sleeve; 321. Sliding ridge; 322. Engaging arc plate; 33. Retaining piece; 331. Arc-shaped plate; 332. Insert block; 34. Outer sleeve; 341. Threaded section; 342. Smooth section; 4. Connecting end block; 41. Engaging groove; 5. Connecting shaft; 51. First slot. DETAILED DESCRIPTION

[0024] 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.

[0025] A boring tool quick change mechanism, see Figure 1-6 , including a tool bar 1 and a tool seat 3. A cutter head 2 is fixed at the front end of the tool bar 1. The tool bar 1 is connected to the tool seat 3. The cutter head 2 is pre-aligned and fixed on the tool bar 1. During the boring process, the corresponding tool bar 1 is replaced and connected to the tool seat 3 to realize quick-release tool change.

[0026] A connecting end block 4 is coaxially fixed to one end of the shank 1 away from the cutter head 2, and a connecting shaft 5 is coaxially fixed to the end face of the connecting end block 4. The connecting end block 4 is provided with at least two axially extending fitting grooves 41 around its circumference, and preferably, the plurality of fitting grooves 41 are evenly and equidistantly distributed around the circumference of the connecting end block 4, and a first slot 51 is provided on the surface of the connecting shaft 5;

[0027] The cam 312 is a block 311 that is fixedly provided with a screw threaded rod 314 on the top of the cam 312 and is secured to the base 314 with the screw threaded rod 314 being secured thereto.

[0028] The retaining member 33 includes an arc-shaped plate 331 and an insert block 332 fixed to the inner wall of the arc-shaped plate 331; a positioning hole 3132 is provided on the end face of the positioning column 313, and the connecting shaft 5 is plugged in and connected to the positioning hole 3132. An arc-shaped positioning groove 3133 is provided on the surface of the positioning column 313, and a second slot 3134 that passes through the positioning hole 3132 is provided on the bottom surface of the arc-shaped positioning groove 3133. The arc-shaped plate 331 is embedded in the arc-shaped positioning groove 3133, and the insert block 332 can be radially plugged in and out, passing through the second slot 3134 and extending into the first slot 51, thereby limiting the axial movement of the tool rod 1.

[0029] In addition, in this embodiment, during assembly, the connecting shaft 5 is inserted into the positioning hole 3132, and the limiting sleeve 32 is slid along the slide groove 3131 so that the engaging arc plate 322 of the limiting sleeve 32 is engaged with the engaging groove 41. At this time, the first slot 51 on the connecting shaft 5 coincides with the second slot 3134 on the positioning column 313 in the radial direction, and the arc plate 331 of the fixing part is aligned with the arc positioning groove 3133 and engaged and inserted. The insert block 332 passes through the second slot 3134 and extends into the first slot 51, thereby limiting the rotation of the knife rod 1. At this time, the arc plate 331 is engaged with the arc positioning groove 3133, and one end face of the arc plate 331 abuts against the end face of the limiting sleeve 32 and limits the axial movement of the limiting sleeve 32, thereby fixing the axial position of the limiting sleeve 32, preventing it from sliding and maintaining stability.

[0030] Among them, the outer sleeve 34 includes a threaded section 341 with an internal thread on the inner wall and threadedly connected to the threaded column 312, and a smooth section 342 tightly and slidably connected to the positioning column 313. The outer sleeve 34 can be rotated and sleeved on the outside of the arc plate 331. When the smooth section 342 of the outer sleeve 34 moves to the outside of the arc plate 331, the arc plate 331 is restricted from radially disengaging from the arc positioning groove 3133, completing the overall assembly, and the assembly is quick.

[0031] The utility model limits the circumferential rotation and axial movement of the tool rod 1 by the limit sleeve 32 and the retaining piece 33 respectively, so as to realize rapid assembly and rapid replacement without delaying the processing efficiency; and limits the axial position of the limit sleeve 32 by the arc plate 331, and the outer sleeve 34 limits the fixing piece from being separated from the arc positioning groove 3133, so that the boring tool has high stability after assembly.

[0032] The above-described embodiments are merely descriptions of preferred implementations of the present invention, and are not intended to limit the concept and scope of the present invention. Without departing from the design concept of the present invention, various modifications and improvements made by ordinary personnel in the field to the technical solution of the present invention should fall within the protection scope of the present invention, and the technical contents of the present invention for protection have been fully recorded in the claims.

Claims

1. A boring tool quick tool change mechanism, comprising a tool bar, a tool head fixed to the front end of the tool bar, and a tool holder for connecting the tool bar, characterized in that: A connecting end block is coaxially fixed to one end of the tool rod away from the tool head, and a connecting shaft is coaxially fixed to the end face of the connecting end block. The connecting end block is circumferentially provided with at least two axially extending engaging grooves, and a first slot is provided on the surface of the connecting shaft. The tool holder at least includes a limit sleeve that can slide axially and engage with the engaging groove to limit the circumferential rotation of the tool rod, and a retaining member that can be radially inserted and pulled out of the first slot to limit the axial movement of the tool rod.

2. A boring tool quick-change mechanism according to claim 1, characterized in that: The tool holder also includes a seat body, which includes a mounting block, a threaded column fixed on the mounting block, and a positioning column coaxially fixedly connected to the end face of the threaded column. The surface of the positioning column is provided with a plurality of axially extending sliding grooves around its circumference. A sliding ridge slidably connected to the sliding groove is fixedly provided on the inner wall of the limit sleeve. The limit sleeve has an outwardly protruding engaging arc plate engaged with the engaging groove on one end face facing the tool rod.

3. The boring tool quick-change mechanism according to claim 2, characterized in that: A positioning hole is provided on the end face of the positioning column, the connecting shaft is plugged and connected to the positioning hole, an arc-shaped positioning groove is provided on the surface of the positioning column, a second slot that passes through the positioning hole is provided on the bottom face of the arc-shaped positioning groove, the retaining member includes an arc-shaped plate engaged with the arc-shaped positioning groove, and an insert block fixed to the inner wall of the arc-shaped plate, the insert block can pass through the second slot and extend into the first slot to limit the axial movement of the tool rod.

4. The boring tool quick-change mechanism according to claim 3, characterized in that: When the arc plate is engaged in the arc positioning groove, one end surface of the arc plate contacts the end surface of the limiting sleeve and limits the axial movement of the limiting sleeve.

5. The boring tool quick-change mechanism according to claim 4, characterized in that: The tool holder also includes an outer sleeve, which includes a threaded section with an internal thread on the inner wall and threadedly connected to the threaded column, and a smooth section tightly slidably connected to the positioning column. The outer sleeve can be rotated and sleeved on the outside of the arc plate to limit the arc plate from radially detaching from the arc positioning groove.

6. A boring tool quick-change mechanism according to any one of claims 2 to 5, characterized in that: The plurality of engaging grooves are evenly and equidistantly distributed around the circumference of the connecting end block, and the plurality of sliding grooves are evenly and equidistantly distributed around the circumference of the positioning column.

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