A tool holder

Abstract

The utility model relates to a kind of knife holders, including fixed base, first clamping arm, second clamping arm, clamping arm elastic member and swing part;First clamping arm and second clamping arm are rotatably connected on fixed base, and with the elastic force of clamping arm elastic member drives first clamping arm and second clamping arm to the direction of rotating to clamp processing tool;First clamping arm and second clamping arm head between accommodating cavity;First clamping arm and second clamping arm tail portion between with limit space, swing part is rotatably connected in fixed base top;Swing part has locking position and unlocking position;Swing part can be rotated to unlocking position under the abutment effect of unlocking portion;Swing part is connected with return spring.The utility model improves knife holder structure, through swingable on the swing part of knife holder, through unlocking portion moving with main shaft in still knife taking knife process swing part abutment rotation to unlocking position, so that knife holder can lock processing tool in non-tool changing process, and processing tool is not easy to fall.

Description

Technical Field

[0001] This utility model relates to the field of machine tool tool magazines, specifically to a tool holder. Background Technology

[0002] The cutting tool is held in place by the first and second clamping arms. However, due to the weight of some heavy cutting tools and spring fatigue, the cutting tool is prone to falling out of the first and second clamping arms.

[0003] In view of this, the inventor conducted in-depth research on the aforementioned deficiencies in the prior art, which led to the creation of this case. Summary of the Invention

[0004] The main objective of this invention is to provide a tool clip that solves the problem of tool slippage mentioned in the background art, making the tool clip hold the tool more securely.

[0005] To achieve the above objectives, the solution of this utility model is:

[0006] A tool holder includes a fixed base, a first clamping arm, a second clamping arm, a clamping arm elastic element, and a swinging part; the first clamping arm and the second clamping arm are rotatably connected to the fixed base, and the first clamping arm and the second clamping arm are driven by the elastic force of the clamping arm elastic element to rotate in the direction of clamping the machining tool; a receiving cavity for clamping the machining tool is formed between the heads of the first clamping arm and the second clamping arm.

[0007] A limiting space exists between the tail ends of the first and second clamping arms. The swinging part is rotatably connected to the top of the fixed base so that the unlocking part on the tool spindle abuts against it. The swinging part has a locked position in the limiting space and an unlocked position away from the limiting space. The swinging part can rotate from the locked position to the unlocked position under the abutment of the unlocking part, so that the swinging part leaves the limiting space and releases the restriction on the movement of the tail ends of the first and second clamping arms. The swinging part is connected to a return spring for resetting the swinging part from the unlocked position to the locked position.

[0008] Furthermore, the return spring is a torsion spring; two lugs are formed on the fixed base, and a through hole is formed on the lugs, with a spindle disposed in the through hole; the torsion spring is sleeved on the spindle between the two lugs; the swinging part is connected to the spindle outside the lugs; the two free ends of the torsion spring abut against the fixed base and the swinging part respectively.

[0009] Furthermore, a drive arm for abutting against the unlocking part is integrally connected to the swing part; when the swing part is in the locked position, the drive arm has an upward angle with the horizontal plane; the upper end of the drive arm is higher than the swing axis of the swing part.

[0010] Furthermore, a third guide wheel is provided at the end of the drive arm away from the swinging part for abutting against the unlocking part.

[0011] Furthermore, the clamping arm elastic element includes a first abutting spring and a second abutting spring; the first abutting spring abuts against the tail of the first clamping arm, and the second abutting spring abuts against the tail of the second clamping arm.

[0012] Furthermore, the fixing base is respectively formed with a first mounting hole and a second mounting hole facing the tail of the first clamping arm and the second clamping arm, and a first abutting spring and a second abutting spring are respectively provided in the first mounting hole and the second mounting hole.

[0013] Furthermore, the tail of the first clamping arm and the tail of the second clamping arm are respectively provided with a first abutting head and a second abutting head; the swinging part is formed with a first abutting seat and a second abutting seat respectively corresponding to the first abutting head and the second abutting head; when the swinging part is in the locked position, the first abutting seat and the second abutting seat respectively restrict the first abutting head and the second abutting head from rotating in the limiting space.

[0014] Furthermore, both the first abutment head and the second abutment head are provided with a spherical crown-shaped abutment protrusion; the first abutment seat has a first abutment plane facing the first abutment head, and the second abutment seat has a second abutment plane facing the second abutment head.

[0015] Furthermore, a first threaded through hole is formed at the tail of the first clamping arm, and a second threaded through hole is formed at the tail of the second clamping arm; the first abutment head is threadedly connected to the first threaded through hole, and the second abutment head is threadedly connected to the second threaded through hole; and the extension length of the first abutment head and the extension length of the second abutment head in the second threaded through hole can be adjusted by the threads; a first abutment screw is also provided in the first threaded through hole, and the first abutment screw abuts against the first abutment head; a second abutment screw is also provided in the second threaded through hole, and the second abutment screw abuts against the second abutment head.

[0016] Furthermore, the heads of the first clamping arm and the second clamping arm are respectively provided with a first guide wheel and a second guide wheel; the first guide wheel and the second guide wheel are located at the opening of the receiving cavity.

[0017] With the above structure, the knife clip of this utility model has at least the following beneficial effects:

[0018] 1. During the tool return process driven by the spindle, the unlocking part on the spindle rotates the swinging part from the locked position to the unlocked position. The heads of the first and second clamping arms can open the tool to be returned, allowing the tool to enter the receiving cavity. During the tool retrieval process, the spindle first moves axially to grab the tool to be retrieved. At this time, the unlocking part on the spindle rotates the swinging part from the locked position to the unlocked position. Then, the spindle drives the tool to be retrieved to be taken out from the opening of the receiving cavity; thus completing the tool return and retrieval.

[0019] Second, the swinging part is rotatably connected to the fixed seat. When returning and taking the tool on the spindle, the swinging part can move with the unlocking part without easily deforming during the contact process between the swinging part and the unlocking part, which helps to improve the service life of the tool holder.

[0020] Third, after the unlocking part is released by the elastic force of the return spring, the swinging part can actively return to the locked position; the return spring is set as a torsion spring, which is sleeved on the spindle, and the structure is simple and compact, which greatly reduces the cost and processing difficulty of the return spring arrangement.

[0021] Fourth, by setting a drive arm as part of the swing part, the position where the swing part abuts against the unlocking part extends forward and upward away from the axis of rotation, so that the unlocking part can smoothly drive the swing part to rotate whether it is pushed against the drive arm from the front or below.

[0022] Compared with the prior art, this utility model improves the tool holder structure by using a swinging part that can swing on the tool holder and an unlocking part that moves with the spindle to rotate the swinging part to the unlocking position during the tool return and take-up process. This allows the tool holder to lock the machining tool during non-tool changing processes, making it less likely for the machining tool to fall off. Attached Figure Description

[0023] Figure 1 This is a three-dimensional structural diagram of a tool holder for holding machining tools.

[0024] Figure 2 This is a front view schematic diagram of the tool holder.

[0025] Figure 3 This is a three-dimensional structural diagram of the blade holder with the swinging part in the unlocked position.

[0026] Figure 4 This is a three-dimensional structural diagram of the blade holder at the second angle with the swinging part in the unlocked position.

[0027] Figure 5 This is a three-dimensional structural diagram of the blade clip at the third angle with the swinging part in the unlocked position.

[0028] Figure 6This is a cross-sectional view of the tool holder holding the machining tool.

[0029] Figure 7 This is a diagram showing the usage state of this utility model.

[0030] Figure 8 This is a partially enlarged structural diagram of the present invention when the unlocking part and the swinging part are in contact.

[0031] In the figure: fixed seat 1; lug 11; spindle 12; first clamping arm 21; second clamping arm 22; receiving cavity 23; limiting space 24; first abutting spring 31; second abutting spring 32; swinging part 4; drive arm 41; third guide wheel 42; first abutting seat 43; first abutting plane 431; second abutting seat 44; second abutting plane 441; torsion spring 5; first abutting head 61; second abutting head 62; abutting protrusion 63; first threaded through hole 71; first abutting screw 711; second threaded through hole 72; second abutting screw 721; first guide wheel 73; second guide wheel 74; spindle 100; unlocking part 110; guide slope 120; abutting plane 130; tool turntable 200; machining tool 300. Detailed Implementation

[0032] To further explain the technical solution of this utility model, the invention will be described in detail below through specific embodiments.

[0033] like Figures 1 to 8 As shown, this utility model relates to a tool holder, which includes a fixed base 1, a first clamping arm 21, a second clamping arm 22, a clamping arm elastic member, and a swinging part 4. The first clamping arm 21 and the second clamping arm 22 are rotatably connected to the fixed base 1, and are driven by the elastic force of the clamping arm elastic member to rotate in the direction of clamping the machining tool 300. A receiving cavity 23 for clamping the machining tool 300 is formed between the heads of the first clamping arm 21 and the second clamping arm 22. A limiting space 24 is provided between the tails of the first clamping arm 21 and the second clamping arm 22. The swing part 4 is rotatably connected to the top of the fixed base 1 so that the unlocking part 110 on the tool spindle 100 abuts against it; the swing part 4 has a locked position in the limiting space 24 and an unlocked position away from the limiting space 24; the swing part 4 can rotate from the locked position to the unlocked position under the abutment action of the unlocking part 110, so that the swing part 4 leaves the limiting space 24 and releases the movement restriction on the tail of the first clamping arm 21 and the second clamping arm 22; the swing part 4 is connected to a return spring for resetting the swing part 4 from the unlocked position to the locked position.

[0034] Thus, this utility model relates to a tool holder in which several tool holders are mounted on a tool turntable 200. During the tool return process, driven by the spindle 100, the unlocking part 110 on the spindle 100 rotates the swinging part 4 from the locked position to the unlocked position. The heads of the first clamping arm 21 and the second clamping arm 22 can open the tool to be returned, allowing the tool 300 to enter the receiving cavity 23. During the tool removal process, the spindle 100 first moves axially to grasp the tool 300 to be removed. At this time, the unlocking part 110 on the spindle rotates the swinging part 4 from the locked position to the unlocked position. Then, the spindle drives the tool to be removed from the opening of the receiving cavity 23; thus completing the tool return and removal. The swinging part 4 is rotatably connected to the fixed base 1. During the tool return and removal process on the spindle 100, when the unlocking part 110 abuts against the swinging part 4, the swinging part 4 can move with the spindle without easily deforming, which helps to improve the service life of the tool holder.

[0035] Preferably, the return spring is a torsion spring 5; two lugs 11 are formed on the fixed base 1, and a through hole is formed on each lug 11, with a spindle 12 disposed in the through hole; the torsion spring 5 is sleeved on the spindle 12 between the two lugs 11; the swing part 4 is connected to the spindle 12 outside the lugs 11; the two free ends of the torsion spring 5 abut against the fixed base 1 and the swing part 4 respectively. After the unlocking part 110 is disengaged by the elastic force of the return spring, the swing part 4 can actively return to the locked position; by setting the return spring as a torsion spring 5, which is sleeved on the spindle 12, the structure is simple and compact, greatly reducing the cost and processing difficulty of the return spring arrangement.

[0036] Preferably, a drive arm 41 for abutting against the unlocking part 110 is integrally connected to the swing part 4; when the swing part 4 is in the locked position, the drive arm 41 has an upward angle with the horizontal plane; the upper end of the drive arm 41 is higher than the swing axis of the swing part 4; the upper part of the unlocking part 110 has a guide slope 120 for abutting against the drive arm 41, and the lower end of the guide slope 120 is connected to the vertically arranged abutting plane 130 on the unlocking part 110. By setting the drive arm 41 as part of the swing part 4, the position where the swing part 4 abuts against the unlocking part 110 extends forward and upward away from the rotation axis, so that the unlocking part 110 can smoothly drive the swing part 4 to rotate whether it pushes against the drive arm 41 from the front or below. In particular, when the unlocking part 110 pushes against the drive arm 41 from below, the drive arm 41 first contacts the guide ramp 120 on the unlocking part 110. As the swinging part 4 swings, the drive arm 41 gradually turns to contact the abutment plane 130. Furthermore, a third guide wheel 42 is provided at the end of the drive arm 41 away from the swinging part 4 for abutting against the unlocking part 110, which reduces the sliding resistance when the drive arm 41 abuts against the unlocking part 110.

[0037] Preferably, such as Figure 6 As shown, the clamping arm elastic element includes a first abutting spring 31 and a second abutting spring 32; the first abutting spring 31 abuts against the tail of the first clamping arm 21, and the second abutting spring 32 abuts against the tail of the second clamping arm 22. Furthermore, the fixing base 1 has a first mounting hole and a second mounting hole respectively facing the tails of the first clamping arm 21 and the second clamping arm 22, and the first abutting spring 31 and the second abutting spring 32 are respectively disposed in the first mounting hole and the second mounting hole.

[0038] Preferably, the tail of the first clamping arm 21 and the tail of the second clamping arm 22 are respectively provided with a first abutting head 61 and a second abutting head 62; the swinging part 4 is formed with a first abutting seat 43 and a second abutting seat 44 respectively corresponding to the first abutting head 61 and the second abutting head 62; when the swinging part 4 is in the locked position, the first abutting seat 43 and the second abutting seat 44 respectively restrict the first abutting head 61 and the second abutting head 62 from rotating towards the limiting space 24. Furthermore, the first abutting head 61 and the second abutting head 62 are each provided with a spherical crown-shaped abutting protrusion 63; the first abutting seat 43 has a first abutting plane 431 facing the first abutting head 61, and the second abutting seat 44 has a second abutting plane 441 facing the second abutting head 62.

[0039] By providing abutment protrusion 63 on the abutment head, the resistance is reduced when the swing part 4 returns from the unlocked position to the locked position.

[0040] Furthermore, the first clamping arm 21 has a first threaded through hole 71 at its tail, and the second clamping arm 22 has a second threaded through hole 72 at its tail; the first abutment head 61 is threadedly connected to the first threaded through hole 71, and the second abutment head 62 is threadedly connected to the second threaded through hole 72; the extension length of the first abutment head 61 and the extension length of the second abutment head 62 in the second threaded through hole 72 can be adjusted by the threads; a first abutment screw 711 is also provided in the first threaded through hole 71, and the first abutment screw 711 abuts against the first abutment head 61; a second abutment screw 721 is also provided in the second threaded through hole 72, and the second abutment screw 721 abuts against the second abutment head 62. Thus, by rotating the first abutment head 61 and the second abutment head 62, their extension lengths can be adjusted, thereby adjusting the gap between the abutment head and the abutment seat. After adjustment, tightening the first abutment screw 711 and the second abutment screw 721 secures the first abutment head 61 and the second abutment head 62 to prevent loosening.

[0041] Preferably, the heads of the first clamping arm 21 and the second clamping arm 22 are respectively provided with a first guide wheel 73 and a second guide wheel 74; the first guide wheel 73 and the second guide wheel 74 are located at the opening of the receiving cavity 23, which facilitates reducing the resistance of the machining tool entering the receiving cavity 23.

[0042] Compared with the prior art, this utility model improves the tool holder structure by using a swinging part 4 that can swing on the tool holder and an unlocking part 110 that moves with the spindle 100 to rotate the swinging part 4 to the unlocking position during the tool return and take-up process. This allows the tool holder to lock the machining tool during non-tool change processes, making it less likely for the machining tool to fall off.

[0043] The above embodiments and figures are not intended to limit the product form and style of the present invention. Any appropriate changes or modifications made by those skilled in the art should be considered as not departing from the patent scope of the present invention.

Claims

1. A knife clip, characterized in that, It includes a fixed base, a first clamping arm, a second clamping arm, a clamping arm elastic element, and a swinging part; the first clamping arm and the second clamping arm are rotatably connected to the fixed base, and the first clamping arm and the second clamping arm are driven by the elastic force of the clamping arm elastic element to rotate in the direction of clamping the machining tool; a receiving cavity for clamping the machining tool is formed between the heads of the first clamping arm and the second clamping arm. A limiting space exists between the tail ends of the first and second clamping arms. The swinging part is rotatably connected to the top of the fixed base so that the unlocking part on the tool spindle abuts against it. The swinging part has a locked position in the limiting space and an unlocked position away from the limiting space. The swinging part can rotate from the locked position to the unlocked position under the abutment of the unlocking part, so that the swinging part leaves the limiting space and releases the restriction on the movement of the tail ends of the first and second clamping arms. The swinging part is connected to a return spring for resetting the swinging part from the unlocked position to the locked position.

2. The knife holder as described in claim 1, characterized in that, The return spring is a torsion spring; the fixed base has two lugs, each lug has a through hole, and a spindle is disposed in the through hole; the torsion spring is sleeved on the spindle between the two lugs; the swinging part is connected to the spindle outside the lugs; the two free ends of the torsion spring abut against the fixed base and the swinging part, respectively.

3. A knife clip as described in claim 1, characterized in that, The swing part is integrally connected to a drive arm for abutting against the unlocking part; when the swing part is in the locked position, the drive arm has an upward angle with the horizontal plane; the upper end of the drive arm is higher than the swing axis of the swing part; the upper part of the unlocking part has a guide slope for abutting against the drive arm, and the lower end of the guide slope is connected to the vertically arranged abutting plane on the unlocking part.

4. A knife clip as described in claim 3, characterized in that, The end of the drive arm away from the swinging part is provided with a third guide wheel for abutting against the unlocking part.

5. A knife holder as described in claim 1, characterized in that, The clamping arm elastic element includes a first abutting spring and a second abutting spring; the first abutting spring abuts against the tail of the first clamping arm, and the second abutting spring abuts against the tail of the second clamping arm.

6. A knife holder as described in claim 1, characterized in that, The fixed base has a first mounting hole and a second mounting hole facing the tail of the first clamping arm and the second clamping arm, respectively. A first abutting spring and a second abutting spring are respectively provided in the first mounting hole and the second mounting hole.

7. A knife holder as described in claim 1, characterized in that, The tail of the first clamping arm and the tail of the second clamping arm are respectively provided with a first abutting head and a second abutting head; the swinging part is formed with a first abutting seat and a second abutting seat respectively corresponding to the first abutting head and the second abutting head; when the swinging part is in the locked position, the first abutting seat and the second abutting seat respectively restrict the first abutting head and the second abutting head from rotating in the limiting space.

8. A knife clip as described in claim 7, characterized in that, Both the first and second abutting heads are provided with spherical crown-shaped abutting protrusions.

9. A knife holder as described in claim 7, characterized in that, The first clamping arm has a first threaded through hole at its tail end, and the second clamping arm has a second threaded through hole at its tail end; the first abutment head is threadedly connected to the first threaded through hole, and the second abutment head is threadedly connected to the second threaded through hole; and the extension length of the first abutment head and the extension length of the second abutment head in the first threaded through hole can be adjusted by the threads; a first abutment screw is also provided in the first threaded through hole, and the first abutment screw abuts against the first abutment head; a second abutment screw is also provided in the second threaded through hole, and the second abutment screw abuts against the second abutment head.

10. A knife holder as described in claim 1, characterized in that, The heads of the first clamping arm and the second clamping arm are respectively provided with a first guide wheel and a second guide wheel; the first guide wheel and the second guide wheel are located at the opening of the receiving cavity.

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