Self-centering vice with quick-change jaw

Abstract

The utility model discloses a quick-change type self-centering vice, relates to tool fixture technical field, including base, the slide groove is formed on the base, the inside both sides of slide groove are slidably matched with the jaw mounting seat, is equipped with the transmission screw hole on the jaw mounting seat, is equipped with the jaw clamp of detachable installation on the jaw mounting seat, the dovetail groove is seted up on the jaw mounting seat, the dovetail boss of dovetail groove plug -in cooperation is seted up to the lower extreme of jaw clamp, two movable slots are seted up on two jaw mounting seats, and movable slot extends to the below of dovetail groove, and the through -hole of communication is seted up with movable slot in the dovetail groove, the bottom plate of up and down activity is seted up in movable slot, and the pressing plate is connected to one side of bottom plate, and the clamping column is seted up on bottom plate, and the first spring is seted up to the lower extreme of bottom plate, and the clamping groove is seted up to the lower extreme of dovetail boss, and the clamping column is pushed through the through -hole after first spring and is connected with the clamping groove, and the dismounting process is simple and quick, and the time is short, and need not use the tool.

Description

Technical Field

[0001] This utility model relates to the field of tooling and fixture technology, and in particular to a quick-change type self-centering vise. Background Technology

[0002] For example, the patent with announcement number CN220903008U describes a quick-change self-centering vise. When the clamping plate needs to be replaced, the fixing screw is transferred and removed from the threaded block. At the same time, a different model of clamping plate is replaced, and the fixing screw is connected to the threaded block, thereby achieving the function of replacing the clamping plate of different models.

[0003] The aforementioned patent employs a "fixed screw + threaded block" connection method to replace the clamping plate. During operation, a tool is needed to tighten the fixed screw to engage or disengage it from the threaded block, thus completing the loading and unloading of the clamping plate. However, this structure has the following drawbacks in practical use: it relies on tools for disassembly and assembly, requiring multiple turns of tightening for each replacement, which is time-consuming and affects overall production efficiency; the threads are prone to wear during repeated disassembly and assembly, leading to increased clearance, affecting positioning accuracy, and even stripping, causing connection failure and reduced reliability.

[0004] Therefore, it is necessary to propose a new technical solution to address the above problems. Utility Model Content

[0005] To overcome the shortcomings mentioned above, this utility model aims to provide a technical solution that can solve the above problems.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a quick-change self-centering vise, comprising a base, a groove formed on the base, and jaw mounting seats slidably fitted on both sides of the groove, the jaw mounting seats having transmission screw holes, and a detachable jaw clamp mounted on the jaw mounting seats; The jaw mounting base is provided with a dovetail groove, and the lower end of the jaw clamp is provided with a dovetail boss, which is inserted into the dovetail groove. Each of the two jaw mounting bases has two movable slots on opposite sides. The two movable slots are located on both sides of the jaw mounting base along its length. The movable slots extend inward to below the dovetail groove. The dovetail groove has a through hole that communicates with the movable slot. The two movable slots are provided with a bottom plate that can move up and down. One side of the bottom plate extends to the opening of the movable slot and is connected to a pressure plate. A locking post is provided on the bottom plate. A first spring is provided between the lower end of the bottom plate and the movable slot. The lower end of the dovetail boss is provided with a locking groove. The locking post is pushed by the first spring through the through hole and engages with the locking groove.

[0007] As a further embodiment of this utility model: L-shaped slots are provided on opposite sides of the two clamp mounting seats, the opening end of the movable slot is connected to the L-shaped slot, and one side of the base plate extends to the outside of the L-shaped slot and connects with the pressure plate. A second spring is provided between the lower end of the pressure plate and the L-shaped groove.

[0008] As a further embodiment of this utility model: a fixing block is provided on the L-shaped groove, and a limiting groove corresponding to the pressure plate is opened on the fixing block, and the side of the pressure plate away from the fixing block is attached to the groove wall in the height direction of the L-shaped groove.

[0009] As a further embodiment of this utility model: the upper ends of the two pressure plates extend out from the upper end of the fixing block and are connected together to a horizontal plate.

[0010] As a further embodiment of this utility model: the bottom walls of the movable groove and the L-shaped groove are respectively provided with grooves corresponding to the first spring and the second spring.

[0011] As a further embodiment of this utility model: a top block is provided on one side edge of the dovetail groove, and a top groove that fits into the top block is provided on the dovetail protrusion.

[0012] As a further embodiment of this utility model: the jaw clamp has a fixed step and a sawtooth pattern.

[0013] As a further embodiment of this utility model: toothed guide grooves are provided on both sides of the inner wall of the slide groove, and toothed protrusions that engage with the toothed guide grooves are provided on both sides of the lower end of the jaw mounting base.

[0014] Compared with the prior art, the beneficial effects of this technical solution are as follows: When changing the jaw clamp, press the pressure plate down, so that the pressure plate drives the base plate to move down in the movable groove and squeeze the first spring below. The locking post that is engaged with the locking groove below the dovetail boss moves down and disengages from the locking groove. Then, the jaw clamp can be slid laterally to allow the dovetail boss on the jaw clamp to slide out from the dovetail groove, so as to complete the disassembly of the jaw clamp. When installing different models of jaw clamps, press down the pressure plate to move the locking pin into the movable slot. Then, align the dovetail boss of the jaw clamp with the dovetail groove and insert it. After the dovetail boss is fully inserted into the dovetail groove, release the pressure plate. Utilize the elastic restoring force of the first spring to move the base plate and locking pin upward, allowing the locking pin to engage with the locking groove of the dovetail boss, thus fixing the dovetail boss in the dovetail groove. This utilizes the engagement of the dovetail groove and the dovetail boss to restrict the forward and backward and up and down movement of the jaw clamp. Then, fix the locking pin to restrict the left and right movement of the jaw clamp, achieving complete fixation of the jaw clamp. The assembly and disassembly process is simple, quick, and time-saving, requiring no tools.

[0015] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is an exploded view of a partial structure of this utility model; Figure 3 This is a schematic diagram of the structure of the jaw mounting base of this utility model; Figure 4 This is a bottom view of the jaw clamp of this utility model; Figure 5 This is a partial cross-sectional schematic diagram of the jaw mounting base of this utility model; Figure 6 yes Figure 5 Enlarged schematic diagram of a local structure at point A; The corresponding labels in the attached diagram are explained as follows: 1. Base; 2. Slide groove; 21. Toothed guide groove; 3. Jaw mounting base; 31. Transmission screw hole; 32. Dovetail groove; 33. Movable groove; 34. Through hole; 35. L-shaped groove; 36. Toothed protrusion; 4. Jaw clamp; 41. Dovetail boss; 42. Slot; 43. Top groove; 44. Fixed step; 45. Serrated teeth; 5. Base plate; 51. Pressure plate; 52. Locking post; 53. First spring; 54. Second spring; 55. Horizontal plate; 6. Fixed clamping block; 61. Limiting groove; 7. Groove; 8. Top block. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] Please see Figure 1-6 A quick-change self-centering vise includes a base 1, a groove 2 formed on the base 1, and jaw mounting seats 3 slidably fitted on both sides inside the groove 2. The jaw mounting seats 3 are provided with transmission screw holes 31, and jaw clamps 4 are detachably mounted on the jaw mounting seats 3. Preferably, a transmission screw (not shown in the figure) can be set in the slide groove 2, as in the prior art CN220903008U. The two jaw mounting seats 3 are screwed to the transmission screw through the transmission screw hole 31. When the transmission screw is rotated, the two jaw mounting seats 3 can drive the jaw clamp to move in opposite directions to clamp and release the workpiece. The specific principle is similar to that in the prior art CN220903008U, and will not be described in detail here. The jaw mounting base 3 has a dovetail groove 32, and the lower end of the jaw clamp 4 has a dovetail boss 41, which is inserted into the dovetail groove 32. Two movable slots 33 are provided on opposite sides of the two jaw mounting bases 3. The two movable slots 33 are located on both sides of the length direction of the jaw mounting base 3. The movable slots 33 extend inward to the bottom of the dovetail groove 32. A through hole 34 communicating with the movable slot 33 is provided in the dovetail groove 32. Two movable slots 33 are provided with a bottom plate 5 that can move up and down. One side of the bottom plate 5 extends to the outside of the opening of the movable slot 33 and is connected to a pressure plate 51. A locking post 52 is provided on the bottom plate 5. A first spring 53 is provided between the lower end of the bottom plate 5 and the movable slot 33. The lower end of the dovetail boss 41 is provided with a locking groove 42. The locking post 52 is pushed by the first spring 53 through the through hole 34 and engages with the locking groove 42.

[0020] Specifically, when replacing the jaw clamp 4, press the pressure plate 51 downwards, so that the pressure plate 51 drives the base plate 5 to move down in the movable groove 33 and squeeze the first spring 53 below. The locking post 52, which is engaged with the locking groove 42 below the dovetail boss 41, moves down and disengages from the locking groove 42. Then, the dovetail boss 41 on the jaw clamp 4 can be slid out from the dovetail groove 32 by sliding the jaw clamp 4 laterally to complete the disassembly of the jaw clamp 4. When installing different models of jaw clamps 4, the pressure plate 51 is pressed down, causing the locking pin 52 to move down into the movable groove 33. Then, the dovetail boss 41 of the jaw clamp 4 is aligned with the dovetail groove 32 and inserted. After the dovetail boss 41 is fully inserted into the dovetail groove 32, the pressure on the pressure plate 51 is released. Using the elastic restoring force of the first spring 53, the base plate 5 and the locking pin 52 are moved upward, allowing the locking pin 52 to move upward into the dovetail groove 32 and engage with the locking groove 42 at the lower end of the dovetail boss 41, thus fixing the dovetail boss 41 in the dovetail groove 32. In this way, after using the cooperation of the dovetail groove 32 and the dovetail boss 41 to restrict the forward and backward and up and down movement of the jaw clamp 4, the locking pin 52 is fixed to restrict the left and right movement of the jaw clamp 4, achieving complete fixation of the jaw clamp 4. The disassembly and assembly process is simple and quick, time-saving, and requires no tools.

[0021] Furthermore, L-shaped slots 35 are provided on opposite sides of the two jaw mounting bases 3, the open end of the movable slot 33 is connected to the L-shaped slot 35, and one side of the base plate 5 extends to the outside of the L-shaped slot 35 and connects with the pressure plate 51. A second spring 54 is provided between the lower end of the pressure plate 51 and the L-shaped groove 35.

[0022] Specifically, the L-shaped slot 35 provides space for the setting of the pressure plate 51, and the second spring 54 is set at the lower end of the pressure plate 51, which helps to provide a more comprehensive upward thrust to the base plate 5 and avoid jamming.

[0023] Furthermore, a fixing block 6 is provided on the L-shaped slot 35. The fixing block 6 has a limiting groove 61 corresponding to the pressure plate 51, and the side of the pressure plate 51 away from the fixing block 6 is attached to the groove wall in the height direction of the L-shaped slot 35.

[0024] Specifically, a fixing block 6 is set on the L-shaped slot 35, and then the limiting groove 61 on the fixing block 6 is used to wrap the pressure plate 51. At the same time, the other side of the pressure plate 51 is attached to the groove wall of the L-shaped slot 35. That is, the limiting groove 61 and the groove wall of the L-shaped slot 35 form a space to limit the pressure plate 51, which can guide the movement of the pressure plate 51. Meanwhile, the length and width of the movable groove 33 are the same as the base plate 5, thereby preventing the base plate 5 from tilting when moving up and down. Combined with the guiding and limiting of the pressure plate 51, the up and down displacement of the base plate 5 is smoother, and the locking post 52 can be accurately engaged with the locking groove 42.

[0025] Furthermore, the upper ends of the two pressure plates 51 protrude from the upper end of the fixed clamping block 6 and are connected to a horizontal plate 55. The horizontal plate 55 can be used to press down the two pressure plates 51 simultaneously to move them downward, thereby improving the ease of operation.

[0026] Furthermore, the bottom walls of the movable groove 33 and the L-shaped groove 35 are respectively provided with grooves 7 corresponding to the first spring 53 and the second spring 54; the setting of the two grooves 7 can stabilize the position of the first spring 53 and the second spring 54, so as to avoid the first spring 53 and the second spring 54 from being tilted, which would cause the elastic thrust of the first spring 53 and the second spring 54 to be unable to act on the base plate.

[0027] Furthermore, a top block 8 is provided on one side edge of the dovetail groove 32, and a top groove 43 is provided on the dovetail boss 41 that fits into the top block 8. When installing the jaw clamp 4, after the dovetail boss 41 is fully inserted into the dovetail groove 32, the top groove 43 on the dovetail boss 41 will fit into the top block 8, and the dovetail boss 41 cannot be pushed further into the dovetail groove 32. At this time, the slot 42 below the dovetail boss 41 is aligned with the locking post 52, thereby ensuring that the insertion position of the dovetail boss 41 is accurate and that the locking post 52 and the slot 42 are smoothly engaged.

[0028] Preferably, the jaw clamp 4 has a fixed step 44 and a sawtooth pattern 45. Before clamping the workpiece, the fixed step 44 allows the workpiece to be placed on the two jaw clamps 4 first. Then, as the two jaw clamps 4 approach each other, the sawtooth pattern 45 is used to clamp the workpiece.

[0029] Preferably, toothed guide grooves 21 are provided on both sides of the inner wall of the slide groove 2, and toothed protrusions 36 that engage with the toothed guide grooves 21 are provided on both sides of the lower end of the jaw mounting base 3, which can improve the stability of the jaw mounting base 3 when it moves.

[0030] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A quick-change jaw self-centering vise, characterized in that, Includes a base (1), on which a sliding groove (2) is formed, and on both sides of the sliding groove (2) a jaw mounting seat (3) is slidably fitted, and a transmission screw hole (31) is opened on the jaw mounting seat (3), and a jaw clamp (4) is detachably mounted on the jaw mounting seat (3). The jaw mounting base (3) is provided with a dovetail groove (32), and the lower end of the jaw clamp (4) is provided with a dovetail boss (41), which is inserted into the dovetail groove (32). Two movable slots (33) are provided on opposite sides of each of the two jaw mounting bases (3). The two movable slots (33) are located on both sides of the length direction of the jaw mounting base (3). The movable slots (33) extend inward to below the dovetail groove (32). A through hole (34) communicating with the movable slot (33) is provided in the dovetail groove (32). The two movable slots (33) are provided with a bottom plate (5) that can move up and down. One side of the bottom plate (5) extends to the outside of the opening of the movable slot (33) and is connected to a pressure plate (51). A locking post (52) is provided on the bottom plate (5). A first spring (53) is provided between the lower end of the bottom plate (5) and the movable slot (33). The lower end of the dovetail boss (41) is provided with a locking groove (42). The locking post (52) is pushed by the first spring (53) through the through hole (34) and engages with the locking groove (42).

2. The quick-change self-centering vise according to claim 1, characterized in that, The two jaw mounting bases (3) have L-shaped slots (35) on opposite sides. The opening end of the movable slot (33) is connected to the L-shaped slot (35). One side of the base plate (5) extends to the outside of the L-shaped slot (35) and connects with the pressure plate (51). A second spring (54) is provided between the lower end of the pressure plate (51) and the L-shaped groove (35).

3. The quick-change self-centering vise according to claim 2, characterized in that, A fixing block (6) is provided on the L-shaped slot (35). A limiting groove (61) corresponding to the pressure plate (51) is provided on the fixing block (6). The side of the pressure plate (51) away from the fixing block (6) is attached to the groove wall in the height direction of the L-shaped slot (35).

4. The quick-change self-centering vise according to claim 3, characterized in that, The upper ends of the two pressure plates (51) protrude from the upper end of the fixing clamp (6) and are connected together to the horizontal plate (55).

5. The quick-change self-centering vise according to claim 4, characterized in that, The bottom walls of the movable groove (33) and the L-shaped groove (35) are respectively provided with grooves (7) corresponding to the first spring (53) and the second spring (54).

6. The quick-change self-centering vise according to claim 5, characterized in that, A top block (8) is provided on one side edge of the dovetail groove (32), and a top groove (43) is provided on the dovetail boss (41) that fits into the top block (8).

7. The quick-change self-centering vise according to any one of claims 1-6, characterized in that, The jaw clamp (4) has a fixed step (44) and a sawtooth pattern (45).

8. The quick-change self-centering vise according to claim 7, characterized in that, The inner wall of the slide (2) is provided with toothed guide grooves (21) on both sides, and the lower end of the jaw mounting base (3) is provided with toothed protrusions (36) that engage with the toothed guide grooves (21).

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