Flat tongs for fixing internal expansion chuck seat and milling machine

Abstract

The utility model discloses a pair of flat tongs for fixing an internal expansion chuck seat. The flat tongs comprise a tongs body, a screw rod, a fixed jaw part, a movable jaw part and the internal expansion chuck seat, a first open groove is formed in the outer side surface of the fixed jaw part; the movable jaw part is connected with the lead screw through a movable nut connected to the lead screw in a sleeving mode, the lead screw drives the movable jaw part to move upwards in the axial direction of the lead screw when rotating, and a second open groove is formed in the outer side face of the movable jaw part. The two ends of the bottom face of the internal expansion chuck base extend to form a first inner buckling edge matched with the first open groove and a second inner buckling edge matched with the second open groove respectively, the fixed jaw portion abuts against the first inner buckling edge through the first open groove, the movable jaw portion abuts against the second inner buckling edge through the second open groove, and therefore the internal expansion chuck base is tensioned and fixed. And meanwhile, the top surface and the side surface of the internal expansion chuck seat are prevented from being shielded, a milling cutter can freely machine a workpiece fixed on the internal expansion chuck seat without being hindered, and the working efficiency is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of flat-nose pliers, in particular to a flat-nose pliers used for fixing an internal expansion chuck seat in a milling machine. Background Art

[0002] In the hardware workpiece processing industry, when the surface of the workpiece needs to be milled on the workbench of the milling machine, a workpiece clamping tool is needed to fix the workpiece to prevent the workpiece from moving during the processing and ensure the processing accuracy.

[0003] An internal expansion chuck is a common workpiece clamping tool, widely used in equipment such as milling machines. It expands inside the workpiece to contact the inner wall, applying an outward tension force to the workpiece and clamping it. This prevents conventional clamping tools from directly applying force to the outer surface of the product, which can cause pinching or surface marks. An internal expansion chuck holder is a seat with multiple internal expansion chucks arranged on top. It can accommodate multiple workpieces at once, facilitating continuous processing on a milling machine. Therefore, if an internal expansion chuck holder is to be used, it must be secured to the milling machine's workbench during operation. Using conventional pneumatic clamping tools or flat-nose pliers to secure the top or side surfaces of the internal expansion chuck holder will obstruct the milling cutter of the milling machine, which also needs to operate near these locations. The same internal expansion chuck holder may need to be repeatedly adjusted to complete processing, affecting processing efficiency and potentially failing to fully utilize the advantages of the internal expansion chuck holder. Utility Model Content

[0004] In view of this, the purpose of the present invention is to provide a flat-nose pliers and a milling machine for fixing an internal expansion chuck seat to solve the above problems.

[0005] In order to achieve the above-mentioned purpose, the present invention adopts the following technical solutions:

[0006] The utility model firstly provides a flat-nose pliers for fixing an internal expansion chuck seat, which comprises a pliers body, a screw rod, a fixed jaw part, a movable jaw part and an internal expansion chuck seat.

[0007] The cam is connected to the movable jaw portion by a movable nut sleeved on the screw rod, and the movable jaw portion is driven by the movable jaw portion to move upward along the screw rod axis when the screw rod is rotated, and a second slot is formed on the outer side of the movable jaw portion, and the outer side surface of the movable jaw portion faces away from the fixed jaw portion, and the second slot is arranged in the opposite direction of the first slot; the two ends of the bottom surface of the inner expansion chuck seat respectively extend to form a first inner buckle edge that fits into the first slot and a second inner buckle edge that fits into the second slot, and the inner expansion chuck seat is provided with a plurality of inner expansion chucks for clamping a workpiece, and the inner expansion chuck seat is placed on the top surface of the fixed jaw portion and the top surface of the movable jaw portion, the fixed jaw portion abuts the first inner buckle edge through the first slot, and the movable jaw portion abuts the second inner buckle edge through the second slot, so that the inner expansion chuck seat is tensioned and fixed.

[0008] Preferably, the first inner buckling edge and the second inner buckling edge are parallel to the bottom surface of the inner expansion chuck seat.

[0009] Preferably, the first slot passes through the outer side surface of the fixed jaw part and the front and rear surfaces of the fixed jaw part, and the second slot passes through the outer side surface of the movable jaw part and the front and rear surfaces of the movable jaw part.

[0010] Preferably, a pair of limiting right-angle plates are provided on the top surface of the fixed jaw part, and a waist-shaped hole is opened on the limiting right-angle plate. A limiting screw locked on the top surface of the fixed jaw part is passed through the waist-shaped hole. The two limiting right-angle plates are arranged opposite to each other perpendicular to the axial direction of the screw rod, and are respectively used to abut the front and rear surfaces of the internal expansion chuck seat.

[0011] Preferably, a tapered pin is inserted into the inner expansion chuck, and the tapered pin expands the inner expansion chuck and abuts against the inner wall of the workpiece to fix the workpiece.

[0012] Preferably, the multiple internal expansion chucks of the internal expansion chuck seat are arranged in an array on the top surface of the internal expansion chuck seat.

[0013] Preferably, a hexagonal nut is connected to one end of the screw rod.

[0014] The utility model also provides a milling machine, which comprises a workbench and the flat-nose pliers for fixing the internal expansion chuck seat as described above, wherein the pliers body of the flat-nose pliers is connected to the workbench.

[0015] The technical effects achieved by the technical solution of this utility model mainly include:

[0016] In the above-mentioned flat-nose pliers, the first inner buckling edge and the second inner buckling edge, which serve as the bottom surface structure of the internal expansion chuck seat, are fixed, so that the top surface of the internal expansion chuck seat and the side surfaces adjacent to the top surface are exposed without being blocked. When the flat-nose pliers are installed on a milling machine, the milling cutter of the milling machine can freely process the workpiece fixed on the internal expansion chuck seat without being hindered, eliminating the need to repeatedly adjust the position of the internal expansion chuck seat to complete the processing, thereby ensuring smooth processing and maintaining working efficiency.

[0017] When the first slot is engaged with the first inner buckle edge, and the second slot is engaged with the second inner buckle edge, the inner wall of the slot itself plays a locking role, and the first inner buckle edge and the second inner buckle edge of the internal expansion chuck seat form a buckling structure, which limits the internal expansion chuck seat from tilting up and down or deflecting on the horizontal plane, further improving the stability of the internal expansion chuck seat during processing;

[0018] The flat-nose pliers of the utility model can be obtained by simply making structural modifications such as slotting on the basis of the existing flat-nose pliers. The structure is simple and easy to implement, the cost can be effectively reduced, and the production speed is fast. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A schematic structural diagram of a flat-nose pliers for fixing an internal expansion chuck seat provided by an embodiment of the present utility model;

[0020] Figure 2 for Figure 1 A partial enlarged view of the circular dotted box area A;

[0021] Figure 3 This is a schematic diagram of the flat-nose pliers clamping a workpiece.

[0022] The reference numerals in the above drawings are:

[0023] Clamp body 1;

[0024] Screw rod 2, hexagonal nut 21;

[0025] The fixed jaw portion 3, the top surface 3a of the fixed jaw portion, and the first slot 30;

[0026] The movable jaw portion 4, the top surface 4a of the movable jaw portion, and the second slot 40;

[0027] Internal expansion chuck seat 5, top surface 5a of internal expansion chuck seat, first inner buckle edge 51, second inner buckle edge 52, internal expansion chuck 53, tapered pin 54;

[0028] Artifact 6;

[0029] Limiting right-angle piece 7, waist-shaped hole 70, limiting screw 71. DETAILED DESCRIPTION

[0030] To make the objectives, technical solutions, and advantages of the present invention more apparent, specific embodiments of the present invention are described in detail below with reference to the accompanying drawings. Examples of these preferred embodiments are illustrated in the accompanying drawings. The embodiments of the present invention shown in and described with reference to the accompanying drawings are merely exemplary, and the present invention is not limited to these embodiments.

[0031] Here, in order to avoid obscuring the present invention due to unnecessary details, only structures and / or processing steps closely related to the solutions according to the present invention are shown in the drawings, and other less relevant details are omitted.

[0032] like Figure 1 and Figure 2 As shown, an embodiment of the present invention provides a flat-nose pliers for fixing an internal expansion chuck seat, which includes a pliers body 1, a screw rod 2, a fixed jaw portion 3, a movable jaw portion 4 and an internal expansion chuck seat 5.

[0033] The screw rod 2 is installed in the clamp body 1;

[0034] Combine Figure 3 As shown, the fixed jaw portion 3 is fixed to the jaw body 1 and is located at one end of the screw rod 2 in the axial direction. A first slot 30 is formed on the outer surface of the fixed jaw portion 3 facing the end.

[0035] The movable jaw portion 4 is connected to the screw rod 2 by a movable nut sleeved on the screw rod 2. When the screw rod 2 rotates, the movable jaw portion 4 moves upward along the axis of the screw rod 2. This is the working principle of conventional flat-nose pliers and will not be described in detail. A second slot 40 is provided on the outer surface of the movable jaw portion 4. The outer surface of the movable jaw portion 4 faces away from the fixed jaw portion 3. The second slot 40 is arranged in the opposite direction of the first slot 30.

[0036] The two ends of the bottom surface of the internal expansion chuck seat 5 respectively extend to form a first internal buckling edge 51 that fits with the first slot 30 and a second internal buckling edge 52 that fits with the second slot 40. The internal expansion chuck seat 5 is provided with a plurality of internal expansion chucks 53 for clamping the workpiece 6. The internal expansion chuck seat 5 is placed on the top surface 3a of the fixed jaw part 3 and the top surface 4a of the movable jaw part 4. The first internal buckling edge 51 is inserted into the first slot 30, and the second internal buckling edge 52 is inserted into the second slot 40. The fixed jaw part 3 abuts against the first internal buckling edge 51 through the first slot 30, and the movable jaw part 4 abuts against the second internal buckling edge 52 through the second slot 40, so that the internal expansion chuck seat 5 is tensioned and fixed.

[0037] Since the above-mentioned flat-nose pliers are fixed by the first inner buckle edge 51 and the second inner buckle edge 52 which serve as the bottom surface structure of the internal expansion chuck seat 5, the top surface 5a of the internal expansion chuck seat 5 and the side surfaces adjacent to the top surface 5a are exposed without obstruction, when the flat-nose pliers are installed on the milling machine, the milling cutter of the milling machine can freely process the workpiece fixed on the internal expansion chuck seat 5 without being hindered, eliminating the need to repeatedly adjust the position of the internal expansion chuck seat 5 to complete the processing, thereby ensuring the smooth progress of the processing operation and maintaining the working efficiency.

[0038] In addition, by providing deep grooves on the fixed jaw portion 3 and the movable jaw portion 4, when the first slot 30 cooperates with the first inner buckle edge 51 and the second slot 40 cooperates with the second inner buckle edge 52, the inner wall of the slot itself will play a locking role, and the first inner buckle edge 51 and the second inner buckle edge 52 of the internal expansion chuck seat 5 form a buckling structure, which further prevents the internal expansion chuck seat 5 from shifting, such as the internal expansion chuck seat 5 cannot tilt up and down or deflect on the horizontal plane, thereby improving the stability of the internal expansion chuck seat 5 during processing.

[0039] When the tool 6 is in the working state, the tool 6 is moved to the working state, and the tool 6 is moved to the working state, and the tool 6 is moved to the working state, the tool 6 is moved to the working state, and the tool 6 is moved to the working state, and the tool 6 is moved to the working state, and the tool 6 is moved to the working state,

[0040] Specifically, in order to coordinate with the horizontal movement direction of the movable jaw portion 4 to complete the tensioning and fixing, the first inner buckling edge 51 and the second inner buckling edge 52 are parallel to the bottom surface of the inner expansion chuck seat.

[0041] The first slot 30 passes through the outer side surface of the fixed jaw part 3 and the front and rear surfaces of the fixed jaw part 3, and the second slot 40 passes through the outer side surface of the movable jaw part 4 and the front and rear surfaces of the movable jaw part 4. The first slot 30 and the second slot 40 are horizontal slot structures on the horizontal plane, which facilitates the loading and disassembly of the internal expansion chuck seat 5.

[0042] Furthermore, a pair of limiting right-angled pieces 7 are provided on the top surface 3a of the fixed jaw portion 3. These limiting right-angled pieces 7 are provided with waist-shaped holes 70, through which limit screws 71 are inserted, which are locked to the top surface 3a of the fixed jaw portion 3. The two limiting right-angled pieces 7 are arranged in a direction perpendicular to the axial direction of the screw rod 2 and are respectively used to abut the front and rear surfaces of the internal expansion chuck seat 5, thereby limiting the front and rear positions of the internal expansion chuck seat 5 and further stabilizing the internal expansion chuck seat 5. Simply loosen the limit screws 71 in the waist-shaped holes 70 and adjust the position of the limiting right-angled piece 7 relative to the limit screws 71 so that the limiting right-angled piece 7 moves to abut the front or rear surface of the internal expansion chuck seat 5. The height of the limiting right-angle piece 7 on the top surface 3a of the fixed jaw portion 3 is lower than the height of the internal expansion chuck seat 5 on the top surface 3a of the fixed jaw portion 3, so as to prevent the top end of the limiting right-angle piece 7 from extending beyond the internal expansion chuck seat 5 and coming too close to the workpiece 6 on the internal expansion chuck 53. Similarly, a pair of limiting right-angle pieces 7 may also be provided on the top surface 4a of the movable jaw portion 4.

[0043] Specifically, a tapered pin 54 is inserted into the inner expansion chuck 53 . The tapered pin 54 expands the inner expansion chuck 53 so that the inner expansion chuck 53 expands and contacts the inner wall of the workpiece 6 , thereby fixing the workpiece 6 .

[0044] The multiple internal expansion chucks 53 of the internal expansion chuck seat 5 are arranged in an array on the top surface 5a of the internal expansion chuck seat 5, which is convenient for the operator to load the workpiece 6. The operator can load the workpiece 6 on the next internal expansion chuck seat 5 while the internal expansion chuck seat 5 that is tensioned and fixed in the flat-nose pliers is in the processing process. After the workpiece 6 on the previous internal expansion chuck seat 5 is processed, the internal expansion chuck seat 5 is removed from the fixed jaw part 3 and the movable jaw part 4, and the next internal expansion chuck seat 5 is immediately replaced for tensioning and fixing for processing, which is conducive to improving working efficiency.

[0045] In order to facilitate the screwing of the screw rod 2 , a hexagonal nut 21 is connected to one end of the screw rod 2 .

[0046] The embodiment of the present utility model further provides a milling machine, which comprises a workbench and the flat-nose pliers for fixing the internal expansion chuck seat 5 as described above, wherein the pliers body 1 of the flat-nose pliers is connected to the workbench.

[0047] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply the existence of any such actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or device comprising the element.

[0048] The above is only a specific implementation method of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present application. These improvements and modifications should also be regarded as the scope of protection of the present application.

Claims

1. A flat-nose pliers for fixing an internal expansion chuck seat, characterized in that: include: Clamp body (1); A screw rod (2), the screw rod (2) being installed in the clamp body (1); A fixed jaw portion (3), the fixed jaw portion (3) being fixed to the jaw body (1) and located at one end in the axial direction of the screw rod (2), and a first slot (30) being provided on an outer surface of the fixed jaw portion (3) facing the end; A movable jaw portion (4), wherein the movable jaw portion (4) is connected to the screw rod (2) via a movable nut sleeved on the screw rod (2), and when the screw rod (2) rotates, the movable jaw portion (4) is driven to move upward along the axis of the screw rod (2), and a second slot (40) is provided on the outer side surface of the movable jaw portion (4), and the outer side surface of the movable jaw portion (4) faces away from the fixed jaw portion (3), and the second slot (40) is arranged in the opposite direction to the first slot (30); An internal expansion chuck seat (5), wherein both ends of the bottom surface of the internal expansion chuck seat (5) extend to form a first internal buckle edge (51) that fits with the first slot (30) and a second internal buckle edge (52) that fits with the second slot (40), and a plurality of internal expansion chucks (53) for clamping the workpiece (6) are provided on the internal expansion chuck seat (5). The internal expansion chuck seat (5) is placed on the top surface (3a) of the fixed jaw part (3) and the top surface (4a) of the movable jaw part (4), and the fixed jaw part (3) abuts against the first internal buckle edge (51) through the first slot (30), and the movable jaw part (4) abuts against the second internal buckle edge (52) through the second slot (40), so that the internal expansion chuck seat (5) is tensioned and fixed.

2. The flat-nose pliers for fixing an internal expansion chuck seat according to claim 1, characterized in that: The first inner buckling edge (51) and the second inner buckling edge (52) are parallel to the bottom surface of the inner expansion chuck seat.

3. The flat-nose pliers for fixing an internal expansion chuck seat according to claim 1, characterized in that: The first slot (30) passes through the outer side surface of the fixed jaw part (3) and the front and rear surfaces of the fixed jaw part (3), and the second slot (40) passes through the outer side surface of the movable jaw part (4) and the front and rear surfaces of the movable jaw part (4).

4. The flat-nose pliers for fixing an internal expansion chuck seat according to claim 1, characterized in that: A pair of limiting right-angle pieces (7) are provided on the top surface (3a) of the fixed jaw portion (3), and a waist-shaped hole (70) is provided on the limiting right-angle piece (7). A limiting screw (71) is passed through the waist-shaped hole (70) and is locked on the top surface (3a) of the fixed jaw portion (3). The two limiting right-angle pieces (7) are arranged in a direction perpendicular to the axial direction of the screw rod (2) and are respectively used to abut the front and rear surfaces of the inner expansion chuck seat (5).

5. The flat-nose pliers for fixing an internal expansion chuck seat according to claim 1, characterized in that: A tapered pin (54) is inserted into the inner expansion chuck (53), and the tapered pin (54) expands the inner expansion chuck (53) by expanding the inner expansion chuck (53) so as to abut against the inner wall of the workpiece (6) to fix the workpiece (6).

6. The flat-nose pliers for fixing an internal expansion chuck seat according to claim 1, characterized in that: The plurality of internal expansion chucks (53) of the internal expansion chuck seat (5) are arranged in an array on the top surface (5a) of the internal expansion chuck seat (5).

7. The flat-nose pliers for fixing an internal expansion chuck seat according to claim 1, characterized in that: One end of the screw rod (2) is connected to a hexagonal nut (21).

8. A milling machine, characterized in that: It comprises a workbench and a flat-nose pliers for fixing an internal expansion chuck seat (5) as claimed in any one of claims 1 to 7, wherein the pliers body (1) of the flat-nose pliers is connected to the workbench.

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