Dovetail groove part clamping tool

Abstract

The utility model provides a dovetail groove part clamping tool. The dovetail groove part clamping tool comprises a base, a pressing plate and a V-shaped block. A linear guide structure is arranged on the top surface of the base; the bottoms of the two pressing plates are slidably arranged on the linear guide structure, the pressing plates are obliquely arranged towards the upper portions of the two ends of the linear guide structure correspondingly, the outer side faces of the pressing plates are used for being matched with the side faces of the dovetail grooves, and the top faces of the pressing plates are used for supporting the bottom faces of the dovetail grooves. The lower end of the outer side of the pressing plate is provided with an elastic supporting piece obliquely facing the position above the tail end of the linear guiding structure, and when the elastic supporting piece is in a natural state, the height difference between the top of the elastic supporting piece and the top face of the pressing plate is smaller than the depth of the dovetail groove. The V-shaped block is arranged between the two pressing plates, two inclined faces on the outer side of the V-shaped block are connected with the inner walls of the two pressing plates in a sliding mode respectively, and the V-shaped block is movably arranged in the direction perpendicular to the base. According to the scheme, higher positioning precision is achieved, and the inner wall of the dovetail groove can be effectively prevented from being knocked.

Description

Technical Field

[0001] The utility model belongs to the technical field of mechanical parts fixing and clamping tooling, in particular to a dovetail slot part clamping tooling. Background Art

[0002] Machine tools have large and small slide blocks and tool holders, and the bottoms of these parts are designed with dovetail groove structures to facilitate sliding connections. During processing and manufacturing, it is usually necessary to first process the dovetail groove, and then use the dovetail groove as a positioning reference to process the remaining structures on the part. The currently common dovetail groove positioning and clamping mechanism uses a positioning block with a cross-sectional shape that matches the dovetail groove to be inserted into the dovetail groove. The positioning block is then used to connect the part to the fixed surface of the fixture. When tightening, the two side surfaces of the dovetail groove are mainly used to contact the positioning block, and the bottom surface of the part is used to contact the fixed surface of the fixture, thereby achieving the positioning of the part. However, the bottom surface of such parts is usually only rough-machined. Although it has a certain degree of precision, it is significantly less rough and flat than the bottom and two side surfaces of the dovetail groove. Therefore, using the bottom surface of the part to contact the fixed surface of the fixture still has some impact on the positioning accuracy of the part. Utility Model Content

[0003] In order to solve the deficiencies of the existing technology, the utility model provides a dovetail groove part clamping tool, which has higher positioning accuracy and can effectively prevent the inner wall of the dovetail groove from being damaged.

[0004] In order to achieve the purpose of this utility model, the following scheme is proposed:

[0005] A dovetail groove part clamping tool comprises a base, a pressing plate and a V-shaped block.

[0006] A straight line guide structure is provided on the top surface of the base;

[0007] There are two pressing plates, the bottom of which is slidably arranged on the linear guide structure, and the pressing plates are respectively inclined upwards at both ends of the linear guide structure. The outer side of the pressing plate is used to match the side of the dovetail groove, and the top surface of the pressing plate is used to support the bottom surface of the dovetail groove. The lower end of the outer side of the pressing plate is provided with an elastic support member inclined upwards toward the end of the linear guide structure. When the elastic support member is in a natural state, the height difference between its top and the top surface of the pressing plate is less than the depth of the dovetail groove.

[0008] The V-shaped block is arranged between the two pressing plates. The two inclined surfaces on the outer side of the V-shaped block are respectively connected with the inner walls of the two pressing plates in a sliding manner. The V-shaped block is arranged to move in a direction perpendicular to the base.

[0009] The beneficial effect of the present invention is that the present invention utilizes the inner side and bottom surface of the dovetail groove with higher precision for positioning, which can effectively improve the positioning accuracy, and can directly load and remove parts along the opening direction of the dovetail groove, making the part clamping process more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] The drawings described herein are for illustrative purposes only of selected embodiments and not all possible implementations, and are not intended to limit the scope of the present invention.

[0011] Figure 1 Shown is a schematic diagram of the structure of this application.

[0012] Figure 2 A schematic diagram showing the state of a dovetail groove part when placed on a clamping fixture is shown.

[0013] Figure 3 A schematic diagram showing the state of the dovetail groove part when being pressed in the present application is shown.

[0014] Figure 4 A cross-sectional view of the present application when the dovetail groove part is compressed is shown.

[0015] Markings in the figure: base-1, linear guide structure-11, pressure plate-2, elastic support member-21, T-shaped guide rail-22, V-shaped block-3, lead screw-4, worm wheel-41, worm-42, turntable-43. DETAILED DESCRIPTION

[0016] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the implementation methods of the present invention are described in detail below with reference to the accompanying drawings. However, the embodiments described in the present invention are only part of the embodiments of the present invention, rather than all the embodiments.

[0017] As 1 to Figure 4 As shown, a dovetail groove part clamping tool includes: a base 1, a pressure plate 2 and a V-shaped block 3.

[0018] Specifically, a linear guide structure 11 is provided on the top surface of the base 1 .

[0019] Specifically, there are two pressure plates 2, the bottom of which is slidably arranged on the linear guide structure 11, and the pressure plates 2 are tilted upward at both ends of the linear guide structure 11. The outer side surface of the pressure plate 2 is used to match the side surface of the dovetail groove, and the top surface of the pressure plate 2 is used to support the bottom surface of the dovetail groove. The lower end of the outer side of the pressure plate 2 is provided with an elastic support member 21 tilted toward the upper end of the linear guide structure 11. When the elastic support member 21 is in a natural state, the height difference between its top and the top surface of the pressure plate 2 is less than the depth of the dovetail groove. In this way, when placing the dovetail groove, the upper end of the elastic support member 21 can be used to support the dovetail groove parts and play a buffering role to prevent collision between the bottom surface of the dovetail groove and the top surface of the pressure plate 2.

[0020] Specifically, the V-shaped block 3 is arranged between the two pressure plates 2, and the two inclined surfaces on the outside of the V-shaped block 3 are respectively slidably connected to the inner walls of the two pressure plates 2. The V-shaped block 3 is arranged to move in a direction perpendicular to the base 1. Specifically, a telescopic device can be provided at the bottom of the base 1, so that its telescopic rod passes vertically through the base 1 and is connected to the V-shaped block 3, so that the V-shaped block 3 can be driven to move in a direction perpendicular to the base 1; a screw can also be vertically passed through the bottom of the base 1, and its upper end passes through the V-shaped block 3, and the V-shaped block 3 can be driven to move in a direction perpendicular to the base 1 by rotating the screw.

[0021] The working principle is that when clamping a dovetail groove part, the V-shaped block 3 is first moved upward to bring the two pressure plates 2 together, reducing the distance between the top outer edges of the pressure plates 2 to less than the opening size of the dovetail groove. The dovetail groove part is then placed, using the dovetail groove opening to span the top of the two pressure plates 2. The bottom surface of the dovetail groove part will contact the upper end of the elastic support member 21, and a gap will be formed between the bottom surface of the dovetail groove and the top surface of the pressure plate 2. By moving the V-shaped block 3 downward, the two pressure plates 2 can be pushed toward the two ends of the linear guide structure 11. During this process, the outer side of the pressure plate 2 will first contact the inner side wall of the dovetail groove. At this time, the top surface of the pressure plate 2 and the bottom surface of the dovetail groove are still in a gap state. By continuing to move the V-shaped block 3 downward, the outer side of the pressure plate 2 can be used to push the inner side of the dovetail groove, thereby moving the dovetail groove part downward. The elastic support member 21 will be squeezed downward until the top surface of the pressure plate 2 abuts the bottom surface of the dovetail groove, thus completing the positioning and clamping of the dovetail groove part. This solution uses the inner side and bottom surface of the dovetail groove with higher precision for positioning, which can effectively improve positioning accuracy.

[0022] Preferably, Figure 1 、 Figure 4As shown, the linear guide structure 11 is a groove structure, and its cross-section is a T-shaped structure or a dovetail structure. The bottom of the pressure plate 2 is provided with a slider that matches the cross-section of the groove structure, and the slider is slidably arranged in the groove structure. This structure can not only enable the pressure plate 2 to move smoothly along the groove structure, but also prevent the slider from separating from the groove structure, so that the height position between the two pressure plates 2 and the base 1 is always kept consistent.

[0023] More preferably, Figure 1 、 Figure 4 As shown, the lower end of the elastic support member 21 is connected to the outside of the slider, and the width of the elastic support member 21 is smaller than the width of the groove structure, so that when clamping the dovetail groove part, the elastic support member 21 can be accommodated by the T-slot, thereby making it convenient for the elastic support member 21 to make room for the dovetail groove part to move.

[0024] Preferably, Figure 1 、 Figure 4 As shown, the outer walls of both sides of the V-block 3 are provided with T-slots along the line connecting the bottom edge and the top edge, and the inner walls of the pressure plate 2 are provided with T-guide rails 22 that cooperate with the T-slots, so that the pressure plate 2 can be driven to move along the length direction of the linear guide structure 11 while moving the V-block 3.

[0025] Preferably, Figure 4 As shown, the base 1 is provided with a screw rod 4 vertically upward, and its upper end passes through the V-shaped block 3 by means of threaded cooperation. The top of the screw rod 4 is lower than the top surface of the pressure plate 2, and the lower end of the screw rod 4 is coaxially provided with a worm gear 41. The side of the base 1 is provided with a worm 42 perpendicular to the screw rod 4, and the worm 42 is engaged with the worm gear 41. The worm gear 41 can be driven to rotate by rotating the worm 42, and then the V-shaped block 3 is driven to move along the axis of the screw rod 4 by the screw rod 4. The cooperation between the worm gear 41 and the worm 42 has a self-locking function, which can effectively prevent the dovetail groove parts from loosening after clamping. The end of the worm 42 as a driving element can be led out to the side of the base 1 by the transmission of the worm wheel 41 and the worm 42, so as to facilitate the rotation operation of the worm 42.

[0026] Further preferably, both ends of the worm 42 protrude from the outside of the base 1 to facilitate operation from both sides of the base 1, and a turntable 43 is provided at each end of the worm 42 to facilitate manual rotation of the worm 42.

[0027] The above description is only a preferred embodiment of the present invention and does not represent the only embodiment or limit the present invention. It should be understood by those skilled in the art that various changes or equivalent replacements made to the present invention without departing from the scope of the present invention are within the scope of protection of the present invention.

Claims

1. A dovetail slot part clamping tool, characterized in that: include: A base (1), the top surface of which is provided with a linear guide structure (11); There are two pressure plates (2), the bottom of which is slidably arranged on the linear guide structure (11), and the pressure plates (2) are respectively inclined upwards towards the two ends of the linear guide structure (11), the outer side surface of the pressure plate (2) is used to match the side surface of the dovetail groove, and the top surface of the pressure plate (2) is used to support the bottom surface of the dovetail groove. The lower end of the outer side of the pressure plate (2) is provided with an elastic support member (21) inclined upwards towards the end of the linear guide structure (11), and when the elastic support member (21) is in a natural state, the height difference between the top of the elastic support member and the top surface of the pressure plate (2) is less than the depth of the dovetail groove; The V-shaped block (3) is arranged between the two pressing plates (2), and the two inclined surfaces on the outside of the V-shaped block (3) are respectively connected to the inner walls of the two pressing plates (2) in a sliding manner. The V-shaped block (3) is arranged to move in a direction perpendicular to the base (1).

2. A dovetail slot part clamping tool according to claim 1, characterized in that: The linear guide structure (11) is a groove-shaped structure, and its cross section is a T-shaped structure or a dovetail structure. The bottom of the pressure plate (2) is provided with a slider matching the cross section of the groove-shaped structure, and the slider is slidably arranged in the groove-shaped structure.

3. A dovetail slot part clamping tool according to claim 2, characterized in that: The lower end of the elastic support member (21) is connected to the outer side of the slider, and the width of the elastic support member (21) is smaller than the width of the groove structure.

4. The dovetail slot part clamping tool according to claim 1, characterized in that: The outer walls of both sides of the V-shaped block (3) are provided with T-shaped grooves along the line connecting the bottom edge and the top edge, and the inner walls of the pressing plate (2) are provided with T-shaped guide rails (22) that match the T-shaped grooves.

5. The dovetail slot part clamping tool according to claim 1, characterized in that: A screw rod (4) is vertically passed through the base (1), and the upper end of the screw rod (4) passes through the V-shaped block (3) by means of threaded engagement. The top of the screw rod (4) is lower than the top surface of the pressure plate (2). A worm wheel (41) is coaxially provided on the lower end of the screw rod (4). A worm (42) perpendicular to the screw rod (4) is passed through the side surface of the base (1), and the worm (42) is meshed with the worm wheel (41).

6. A dovetail slot part clamping tool according to claim 5, characterized in that: Both ends of the worm (42) protrude from the outside of the base (1), and a rotating disk (43) is provided at each end of the worm (42).

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