Clamping jaw structure with changeable clamping axis for tool holder

Abstract

A clamping jaw structure with a changeable clamping axis for a tool holder is provided with a pneumatic cylinder, the pneumatic cylinder is connected with a first clamping portion and a second clamping portion and drives the first clamping portion and the second clamping portion to move in opposite directions, and the first clamping portion is provided with a first guide sliding seat and a first clamping jaw. The second clamping part is provided with a second guide sliding seat, a clamping jaw fixing seat and a second clamping jaw which are connected in sequence, the clamping jaw fixing seat is provided with a groove with a T-shaped cross section, the second clamping jaw is provided with a guide seat with a T-shaped cross section, and the second clamping jaw is arranged in the groove through the guide seat of the second clamping jaw and is connected with the clamping jaw fixing seat; the length, width and depth of the groove are slightly larger than the length, width and depth of the guide seat respectively, and a gap is formed between the groove and the guide seat, so that the second clamping jaw is matched with the tool holder for floating clamping to adjust the axis of the tool holder to adapt to the clamping state.

Description

TECHNICAL FIELD

[0001] The present invention relates to a jaw structure, and particularly, to a jaw structure for holding a tool shank with variable axis. BACKGROUND

[0002] The conventional tool machine uses a tool changing mechanism to perform tool changing operation. The tool changing mechanism has a rotating arm responsible for exchanging the tool shank and the tool in the tool magazine. The accuracy of the tool shank and the tool sleeve in the tool magazine is required to be high. When the tool machine uses a one-to-many external tool magazine, the installation and positioning errors between the tool machines or the tool magazines cause the tool axes not to be completely the same. When the conventional tool changing arm (jig) is used to change the tool, since the two clamping heads of the jig are rigid structures and only make opposite displacement to each other without other floating displacement function, the tool shank interference is easily caused by the errors to make the tool clamping inaccurate and result in tool changing failure. SUMMARY

[0003] The main purpose of the present invention is to provide a jaw structure for holding a tool shank with variable axis. The jaw structure is designed with floating jaw and adjustable limiting mechanism to control the appropriate degree of freedom of the jaw, automatically adapt to the error of the tool magazine, and greatly reduce the tool exchange failure rate.

[0004] To achieve the above purpose, the present invention provides a jaw structure for holding a tool shank with variable axis, which comprises:

[0005] a pneumatic cylinder;

[0006] a first clamping part having a first guide slide and a first jaw connected to the first guide slide, the first clamping part being arranged in the pneumatic cylinder by the first guide slide;

[0007] a second clamping part having a second guide slide, a jaw fixing seat and a second jaw connected in sequence, the second clamping part being arranged in the pneumatic cylinder by the second guide slide, the jaw fixing seat having a groove with a T-shaped cross section, the groove having a first space and a second space connected to the first space, the second jaw having a guide seat with a T-shaped cross section, the guide seat having a neck portion and an embedded plate connected to the neck portion, the second jaw being arranged in the first space and the second space of the groove by the neck portion and the embedded plate respectively to be connected to the jaw fixing seat, wherein the length, width and depth of the first space and the second space are slightly larger than the length, width and depth of the neck portion and the embedded plate, and a gap is formed between the guide seat and the groove to adjust the tool shank floating clamping of the second jaw to adapt the tool shank axis to the clamping state.

[0008] Preferably, an adjusting limiting mechanism is arranged on one side of the first jaw adjacent to the second jaw to adjust the minimum clamping distance of the first jaw and the second jaw.

[0009] Preferably, the clamping sections of the first and second grippers each have a flange, the cross-section of each flange is generally V-shaped, and the outer contour of each flange is smaller than the shape and size of the handle groove. The first and second grippers are adjusted to clamp the handle groove with their flanges.

[0010] Preferably, the gripper fixing seat is composed of an upper fixing seat and a lower fixing seat combined together. Attached Figure Description

[0011] Figure 1 This is a three-dimensional schematic diagram of the present invention;

[0012] Figure 2 This is an exploded perspective view of the present invention;

[0013] Figure 3 This is a cross-sectional schematic diagram of the present invention;

[0014] Figure 4 For the present invention Figure 3 A magnified view of a portion of the image;

[0015] Figure 5 and Figure 6 This is a schematic diagram illustrating the usage state of the adjustable limiting mechanism of the present invention;

[0016] Figure 7 and 8 This is a schematic diagram illustrating the operation of adjusting the handle angle according to the present invention;

[0017] Figure 9 For the present invention Figure 8 A partial cross-sectional schematic diagram. Detailed Implementation

[0018] First, please refer to Figures 1 to 9 The present invention provides a jaw structure for holding a knife handle with a variable axis, which consists of a pneumatic cylinder 1, a first clamping part 2, and a second clamping part 3, wherein:

[0019] The pneumatic cylinder 1 is provided with a concave slide rail 11. In this embodiment, the pneumatic cylinder 1 is connected to the first clamping part 2 and the second clamping part 3 respectively. The pneumatic cylinder 1 drives the first clamping part 2 and the second clamping part 3 to move in opposite directions to clamp a tool handle 4 for tool changing operation.

[0020] The first clamping part 2 has a first guide slide 21 and a first clamping jaw 22 connected to the first guide slide 21. The first guide slide 21 is arranged in the pneumatic cylinder 1. The first clamping jaw 22 has an arc-shaped flange 222 inside the clamping section 221. The cross section of the flange 222 is approximately V-shaped. The outer contour of the flange 222 is smaller than the shape and size of the groove 41 of the handle 4. A gap 34 is formed between the flange 222 and the groove 41. The first clamping jaw 22 can be adjustably clamped in the groove 41 of the handle 4 by the flange 222. The overall outer contour of the first guide slide 21 matches the shape of the slide rail 11 of the pneumatic cylinder 1. The first guide slide 21 is correspondingly arranged in the slide rail 11.

[0021] The second clamping part 3 has a second guide slide 31, a clamping jaw fixing seat 32 and a second clamping jaw 33 arranged in sequence. The second guide slide 31 is arranged in the pneumatic cylinder 1. The second clamping jaw 33 has an arc-shaped flange 332 inside the clamping section 331. The cross section of the flange 332 is approximately V-shaped. The outer contour of the flange 332 is smaller than the shape and size of the groove 41 of the handle 4. A gap 34 is formed between the flange 332 and the groove 41. The second clamping jaw 33 can be adjustably clamped in the groove 41 of the handle 4 by the flange 332. The overall outer contour of the second guide slide 31 matches the shape of the slide rail 11 of the pneumatic cylinder 1. The second guide slide 31 is correspondingly arranged in the slide rail 11.

[0022] Further, please continue to refer to Figure 3 and Figure 4 The clamping jaw fixing seat 32 has a groove 321 with a T-shaped cross section. The groove 321 has a first space 322 and a second space 323 connected to the first space 322. The second clamping jaw 33 has a guide seat 333 with a T-shaped cross section. The guide seat 333 has a neck portion 334 and an embedded plate 335 connected to the neck portion 334. The second clamping jaw 33 has the neck portion 334 and the embedded plate 335 arranged in the first space 322 and the second space 323 of the groove 321 respectively to connect with the clamping jaw fixing seat 32. The length, width and depth of the first space 322 and the second space 323 are slightly larger than the length, width and depth of the neck portion 334 and the embedded plate 335 respectively. A gap 35 is formed between the guide seat 333 and the groove 321 for the movement of the guide seat 333. The second clamping jaw 33 can be adaptively shaken relative to the clamping jaw fixing seat 32 through the gap 35. In this way, the second clamping jaw 33 can be floatingly clamped with the handle 4 to adjust the axis L of the handle 4 to adapt to the clamping state.

[0023] In addition, as Figure 5 and Figure 6As shown, an adjustment limiting mechanism 23 is arranged on one side of the first clamping jaw 22 adjacent to the second clamping jaw 33, and the length of the adjustment limiting mechanism 23 is adjusted to abut against the clamping jaw fixing seat 32, so as to limit the moving stroke of the first clamping part 2 and the second clamping part 3, and accordingly adjust the minimum clamping distance between the first clamping jaw 22 and the second clamping jaw 33.

[0024] In addition, the clamping jaw fixing seat 32 is combined by an upper fixing seat 324 and a lower fixing seat 325, and the clamping jaw fixing seat 32 is detachable, so that the second clamping jaw 33 can be separated from the clamping jaw fixing seat 32, and the function of replacing the second clamping jaw 33 can be achieved.

[0025] Please refer to Figures 7 to 9 As can be known from the above description of the structure of the present application, the length, width and depth of the first space 322 and the second space 323 are slightly larger than the length, width and depth of the neck part 334 and the embedded plate 335, respectively, and the gap 35 for the movement of the guide seat 333 is formed between the guide seat 333 and the groove 321. Due to the installation error of the tool after being stored in the tool magazine (not shown in the figure), the axis L of the tool handle 4 deviates, and when the tool is taken out, the first clamping jaw 22 extends into the groove 41 of the tool handle 4 with its flange 222. Since the first clamping jaw 22 is in a fixed state, the flange 222 is not in a correct position and abuts against the groove 41, but still provides the function of supporting and positioning. In addition, the angle allowance formed by the floating design of the second clamping jaw 33 allows the second clamping jaw 33 to extend into the groove 41 of the tool handle 4 with its flange 332, and the angle can be adjusted adaptively according to the shape of the groove 41. Furthermore, the position of the axis L of the tool handle 4 is changed after the tool is taken out to adapt to the clamping state, thereby effectively improving the holding stability and achieving the effect of greatly reducing the failure of tool changing.

[0026] It should be noted that the flanges 222 and 332 of the first clamping jaw 22 and the second clamping jaw 33 are both inwardly retracted, so that the outer contour of the flanges is smaller than the shape and size of the groove 41 of the tool handle 4. In this way, the first clamping jaw 22 will not cause clamping interference when supporting and positioning due to the outer contour of the flange 222 being too consistent with the shape of the groove 41. In addition, the gap 34 formed by the flanges 222 and 332 and the groove 41 of the tool handle 4, in combination with the angle allowance formed by the floating design of the second clamping jaw 33, can effectively avoid causing clamping and transfer interference, thereby improving the success rate of tool changing.

[0027] The above describes the preferred embodiment of the present application and the technical principles used therein. For those skilled in the art, any equivalent changes, simple replacements and the like based on the technical solutions of the present application without departing from the spirit and scope of the present application are all within the protection scope of the present application.

Claims

1. A jaw structure for a knife holder with a variable clamping axis, characterized in that The utility model relates to a cutting tool chucking device, comprising: a pneumatic cylinder; a first clamping part having a first guide slide and a first clamping jaw connected to the first guide slide, the first clamping part being arranged in the pneumatic cylinder by the first guide slide; a second clamping part having a second guide slide, a clamping jaw fixing seat and a second clamping jaw arranged in sequence, the second clamping part being arranged in the pneumatic cylinder by the second guide slide, the clamping jaw fixing seat having a groove in the shape of a T in cross section, the groove having a first space and a second space connected to the first space, the second clamping jaw having a guide seat in the shape of a T in cross section, the guide seat having a neck part and an embedded plate connected to the neck part, the second clamping jaw being arranged in the first space and the second space of the groove by the neck part and the embedded plate respectively to be connected to the clamping jaw fixing seat, wherein the length, width and depth of the first space and the second space are slightly larger than the length, width and depth of the neck part and the embedded plate respectively, and a gap is formed between the guide seat and the groove to allow the second clamping jaw to be clamped to a floating knife handle to adjust the axis of the knife handle to adapt to the clamping state.

2. The jaw structure for a knife holder axis variable according to claim 1, characterized in that, An adjusting limiting mechanism is arranged on one side of the first clamping jaw adjacent to the second clamping jaw to adjust the minimum clamping distance between the first clamping jaw and the second clamping jaw.

3. The jaw structure for a knife holder axis variable chuck according to claim 1, characterized in that, The clamping segments of the first clamping jaw and the second clamping jaw each have a flange, the cross section of each flange is in the shape of a V, and the outer contour of each flange is smaller than the shape and size of the knife handle groove, and the first clamping jaw and the second clamping jaw are adjustably clamped in the knife handle groove by the flanges respectively.

4. The jaw structure for a knife handle with a variable clamping axis according to claim 1, characterized in that The clamping jaw fixing seat is formed by combining an upper fixing seat and a lower fixing seat.

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