Clamping mechanism of stroke-adjustable clamp

Abstract

The clamping mechanism of the stroke-adjustable clamp comprises a base, and a first sliding block capable of sliding linearly on the top face of the base in a limiting mode is arranged on the base. The upper portion of one side face, perpendicular to the moving direction, of the first sliding block is a sliding block inclined face inclining from top to bottom in the direction away from the first sliding block, a clamping block sliding along the sliding block inclined face is arranged on the sliding block inclined face, and a limiting sliding groove with the upper end open is formed in the upper portion of the sliding block inclined face, and the axis of the limiting sliding groove is parallel to the sliding block inclined face. The clamping block is provided with a second sliding block arranged in the limiting sliding groove in a matched and sliding mode. An adjusting bolt which is in threaded connection with the lower side groove wall of the limiting sliding groove and of which the axis is parallel to the inclined surface of the sliding block is arranged on the second sliding block in a penetrating manner. According to the utility model, larger clamping force can be provided, the stability of a clamping structure is kept, and the stroke can be conveniently adjusted.

Description

TECHNICAL FIELD

[0001] The utility model relates to tool fixture field especially a kind of clamping mechanism of stroke adjustable fixture. BACKGROUND

[0002] Clamp refers to the device for fixing processing object in the process of mechanical manufacturing, so that it occupies correct position to accept construction or detection. Stroke adjustable fixture is usually called general adjustable fixture, which is designed according to similar process of some similar structure and different size workpieces. Inclined wedge clamping mechanism is a kind of clamping mechanism commonly used in stroke adjustable fixture. Inclined wedge mechanism can flexibly convert force in vertical direction into force in horizontal or inclined direction, to realize conversion from vertical motion to horizontal or inclined motion. In existing inclined wedge mechanism, force is applied in vertical direction, so the applied force is decomposed into two components: one is perpendicular to inclined surface, to overcome friction; the other is parallel to inclined surface, to move in horizontal or inclined direction. In existing structure, decomposition of force will lead to loss of force, so that clamping force is small under the same force, and clamping mechanism is unstable and prone to clamping loosening during manufacturing process. SUMMARY

[0003] In view of the existing deficiencies, the utility model provides a kind of clamping mechanism of stroke adjustable fixture.

[0004] The utility model discloses a kind of clamping mechanism of stroke adjustable fixture, and the technical scheme adopted to solve its technical problems is: a kind of clamping mechanism of stroke adjustable fixture, including base, the first slider that can be limited straight line sliding on the top surface of base is provided on the base;The upper part of one side of the first slider perpendicular to movement direction is inclined slider inclined surface from top to bottom and to the direction away from the first slider, the clamping block that is slid along slider inclined surface is provided on the slider inclined surface, the upper part of the slider inclined surface is provided with the upper end open limit sliding groove with the axis parallel to slider inclined surface, the second slider that is slid in limit sliding groove is matched and set on the clamping block;The second slider is provided with adjusting bolt that is connected in the lower side groove wall of limit sliding groove with the axis parallel to slider inclined surface by screwing on the upper end face and lower end face of the second slider.

[0005] As preferred, the upper end face and lower end face of the second slider are parallel to the lower side groove wall of the limit sliding groove.

[0006] As preferred, the clamping block is provided with anti-skid groove on the surface opposite to the second slider.

[0007] As preferred, the clamping block is inverted right-angle trapezoidal clamping block, and the second slider is arranged on the inclined surface of the clamping block.

[0008] As preferred, the sliding block inclined surface is provided with a dovetail slide groove with open upper end and lower end and axis parallel to the sliding block inclined surface, the clamping block is provided with a sliding arm matched with the dovetail slide groove, the limiting slide groove is arranged on the upper part of the dovetail slide groove bottom, and the second sliding block is arranged on the surface of the sliding arm away from the clamping block.

[0009] As preferred, the adjusting screw is sleeved with an elastic spring between the second sliding block bottom surface and the limiting slide groove lower side groove wall.

[0010] As preferred, the limiting slide groove lower side groove wall is provided with a threaded hole threaded with the adjusting screw.

[0011] As preferred, the base top surface is provided with a first rack, the first sliding block bottom surface is provided with a sliding block groove, the sliding block groove is provided with a second rack with top surface spaced from the sliding block groove bottom and capable of engaging with the first rack, and the sliding block groove bottom is provided with a sliding block threaded hole penetrating the first sliding block top end, and the sliding block threaded hole is threaded with a limiting screw with lower end penetrating the sliding block threaded hole and connected with the second rack top end.

[0012] As preferred, the sliding block groove far away from the clamping block side groove wall is provided with an opening, and the first sliding block is detachably provided with a baffle arranged at the opening.

[0013] As preferred, the base is a T-shaped cross-section base, and the first sliding block bottom surface is provided with a sliding block clamping groove capable of being matched and clamped with the base.

[0014] The utility model discloses the beneficial effect lies in: the utility model utilizes the limiting straight line sliding of first sliding block on base to adjust the travel of clamp, and the clamping block on first sliding block is used to clamp workpiece, and the structure is more compact and simple, and the adjusting screw on second sliding block is arranged into the structure parallel with sliding block inclined surface, so that when the adjusting screw exerts force on second sliding block, the direction of the exerted force is also parallel with sliding block inclined surface, so that the component force in the direction perpendicular to the inclined surface can not be generated, and greater clamping force can be generated under smaller force, and the stability of clamping structure is kept. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is the structure schematic diagram of the utility model embodiment clamping mechanism.

[0016] Figure 2 It is the section structure schematic diagram of the utility model embodiment clamping mechanism along the sliding direction of first sliding block.

[0017] Figure 3 It is the structure schematic diagram of the utility model embodiment A. Figure 2 ​

[0018] Figure 4 Figure 1 is a disassembled structural schematic diagram of the clamping mechanism of the utility model embodiment;

[0019] Figure 5 Figure 2 is a structural schematic diagram of the clamping block and the second sliding block of the utility model embodiment;

[0020] Figure 6 Figure 3 is a front structural schematic diagram of the first sliding block of the utility model embodiment;

[0021] Figure 7 Figure 4 is a bottom structural schematic diagram of the first sliding block of the utility model embodiment;

[0022] Figure 8 Figure 5 is a structural schematic diagram of the clamping mechanism and the fixed clamping block of the utility model embodiment;

[0023] In the figure, the names and serial numbers of the parts are as follows: 1-base 10-fixed clamping block 2-first sliding block 20-sliding block inclined surface 21-sliding block clamping groove 200-limiting sliding groove 201-dovetail sliding groove 202-threaded hole 203-sliding block groove 204-sliding block threaded hole 205-opening 3-clamping block 30-anti-skid groove 31-sliding arm 4-second sliding block 40-bottom groove 41-second sliding block threaded hole 5-adjusting bolt 6-elastic spring 7-first rack 70-second rack 8-limiting bolt 9-baffle. DETAILED DESCRIPTION

[0024] In order to more clearly illustrate the purpose, technical scheme and advantages of the utility model embodiment, the utility model will be further described below in combination with the drawings and embodiments, and a clear and complete description will be made. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0025] The utility model embodiment is as follows: Figures 1 to 8As shown in the figure, a clamping mechanism of a stroke-adjustable clamp includes a base 1 used to mount the clamping mechanism on one side of a workbench, a fixed clamp block 10 mounted on the other side of the workbench and forming a clamping station with the clamping mechanism, the base 1 is in the shape of a long strip with the long side arranged in a direction perpendicular to the fixed clamp block 10, the stroke of the clamp is adjusted by adjusting the distance between the first sliding block 2 and the fixed clamp block 10 in the direction of the long side, for example, the fixed clamp block 10 is arranged on the left side of the workbench, and the base 1 is arranged on the right side of the workbench with the long side arranged in the left-right direction; the base 1 is provided with a first sliding block 2 capable of linear sliding on the top surface of the base 1, that is, the first sliding block 2 is capable of linear sliding on the base 1, and is positioned when sliding to the desired position to determine the stroke of the clamp, at this time, the base 1 is arranged in the shape of a T-shaped cross section, the bottom surface of the first sliding block 2 is provided with a sliding block clamping groove 21 capable of matching and clamping the base 1, the cross section of the sliding block clamping groove 21 is also in the shape of a T, the base 1 is clamped in the sliding block clamping groove 21 so that the first sliding block 2 can linearly slide relative to the base 1, ensuring the stability of the sliding structure between the first sliding block 2 and the base 1; the upper part of one side of the first sliding block 2 perpendicular to the direction of movement is a sliding block inclined surface 20 inclined from top to bottom and away from the first sliding block 2, the lower part of the side of the first sliding block 2 is arranged in a vertical plane structure, avoiding adverse effects on clamping workpieces, when the base 1 is arranged in the left-right direction, the first sliding block 2 slides left and right on the base 1, the left and right sides of the first sliding block 2 are the sides perpendicular to the direction of movement, and the sliding block inclined surface 20 is arranged on the left side or the right side of the first sliding block 2, for example Figure 1 、 Figure 2 and Figure 8As shown in the first slider 2 left side is provided with slider inclined surface 20, at this time the slider inclined surface 20 is from top to bottom and left inclined surface, use will be with the clamping mechanism matched fixed clamp block 10 installed in the left side of the workbench can, slider inclined surface 20 is provided with along the slider inclined surface 20 sliding clamping block 3, clamping block 3 just with the first slider 2 between the inclined wedge sliding structure, clamping block 3 is clamped between the left side surface and fixed clamp block 10, along with clamping block 3 on the slider inclined surface 20 down, clamping block 3 and fixed clamp block 10 between the workpiece between the clamping state, clamping block 3 is inverted right angle trapezoidal clamping block, namely clamping block 3 left side of the side is vertical plane, right side of the side is inclined and opposite to the inclined surface of the slider inclined surface 20, clamping block 3 right side inclined surface angle is the same as the angle of the slider inclined surface 20 inclined; The upper part of the slider inclined surface 20 is provided with the axis parallel to the slider inclined surface 20 upper end open limit sliding groove 200, clamping block 3 is provided with the second slider 4 matching sliding in the limit sliding groove 200, namely the limit sliding groove 200 is also inclined, its upper side groove wall is open, facilitate the second slider 4 in the sliding, the second slider 4 and clamping block 3 is integrally formed, so as to limit the sliding groove 200 to limit the sliding of clamping block 3, avoid unlimited sliding will damage the clamping workpiece, when the clamping block 3 is inverted right angle trapezoidal structure, the second slider 4 is arranged on the right side of the inclined surface of the clamping block 3; At this time, the upper end surface and the lower end surface of the second slider 4 are parallel to the lower side groove wall of the limit sliding groove 200, so that the adjusting bolt 5 can better exert force on the second slider 4, and the second slider 4 can slide in the limit sliding groove 200; The second slider 4 is provided with an adjusting bolt 5 which is screwed on the lower side groove wall of the limit sliding groove 200 and has an axis parallel to the slider inclined surface 20, and a telescopic spring 6 is sleeved on the second slider 4 bottom surface and the lower side groove wall of the limit sliding groove 200.Threaded hole 202 is arranged on the lower side wall of the limiting sliding groove 200, and is in threaded connection with the adjusting bolt 5, so as to facilitate the installation and screwing of the adjusting bolt 5; the elastic spring 6 is arranged to buffer the force applied by the adjusting bolt 5 to the second sliding block 4, so as to more gently apply the clamping force on the workpiece.

[0026] Further improvements, as shown in Figures 1 to 5 , the clamping block 3 is provided with an anti-skid groove 30 on the surface opposite to the second sliding block 4, the anti-skid groove 30 is arranged on the left side of the clamping block 3, and the second sliding block 4 is arranged on the right side of the clamping block 3.

[0027] Further improvements, as shown in Figures 4 to 6 , the sliding block inclined surface 20 is provided with a dovetail sliding groove 201 which is open at the upper end and the lower end and whose axis is parallel to the sliding block inclined surface 20, the clamping block 3 is provided with a sliding arm 31 which is matched with the dovetail sliding groove 201, the limiting sliding groove 200 is arranged on the upper part of the groove bottom of the dovetail sliding groove 201, and the second sliding block 4 is arranged on the surface of the sliding arm 31 away from the clamping block 3, so that the sliding arm 31 is clamped in the dovetail sliding groove 201 and can slide relative to the dovetail sliding groove 201, and the clamping block 3 is prevented from falling off from the first sliding block 2 through the clamping of the two.

[0028] Further improvements, as shown in Figure 2 and Figure 3 , the bottom surface of the second sliding block 4 is provided with a bottom surface groove 40, the adjusting bolt 5 is arranged in the groove bottom of the bottom surface groove 40, and the upper part of the elastic spring 6 is arranged in the bottom surface groove 40, that is, the second sliding block through hole 41 is arranged in the groove bottom of the bottom surface groove 40, so that the elastic spring 6 is limited in the bottom surface groove 40 and can better play a role.

[0029] Further improvements, as shown in Figures 1 to 4 , Figures 6 to 8As shown in the figure, for the limiting structure of the first slider 2, the top surface of the base 1 is provided with a first rack 7, a base groove is arranged on the top surface of the base 1 along the long side of the base 1, the first rack 7 is detachably installed in the base groove by screws, the top of the teeth of the first rack 7 is lower than or flush with the top surface of the base 1, the bottom surface of the first slider 2 is provided with a slider groove 203, the slider groove 203 is internally installed with a second rack 70 whose top surface can engage with the first rack 7 and whose top is spaced from the groove bottom of the slider groove 203, that is, the teeth of the first rack 7 are upward, and the teeth of the second rack 70 are downward, the length of the first rack 7 is adapted to the length of the base 1, and the length of the second rack 70 is equivalent to the length of the slider groove 203, the first rack 7 can engage with the second rack 70, and the spacing between the top of the second rack 70 and the groove bottom of the slider groove 203 means that there is a gap between the two, which gives the second rack 70 a space for upward movement when it is disengaged from the engagement with the first rack 7; the groove bottom of the slider groove 203 is provided with a slider threaded hole 204 penetrating the top end of the first slider 2, a limiting bolt 8 whose lower end penetrates out of the slider threaded hole 204 and is connected to the top end of the second rack 70 is threadedly connected in the slider threaded hole 204, the limiting bolt 8 is inserted into the slider threaded hole 204 from the top end of the slider threaded hole 204 and is threadedly connected in the slider threaded hole 204, and at the same time, the lower end of the limiting bolt 8 penetrates out of the lower end of the slider threaded hole 204, the lower end of the limiting bolt 8 is connected to the top end of the second rack 70 after penetrating out of the slider threaded hole 204, so that the second rack 70 can be engaged with the first rack 7 by tightening the limiting bolt 8 to limit the sliding of the first slider 2 on the base 1, after loosening the limiting bolt 8, the second rack 70 moves upward with the limiting bolt 8, the second rack 70 is disengaged from the engagement with the first rack 7, and the first slider 2 can slide on the base 1; at this time, for the connecting structure of the limiting bolt 8 and the second rack 70, the two can be fixedly connected together; in order to facilitate the maintenance of the second rack 70, a T-shaped groove can be arranged on the top of the second rack 70, a clamping block that matches and is clamped in the T-shaped groove is arranged on the lower end of the limiting bolt 8, and an opening 205 is arranged on the groove wall of the slider groove 203 away from the clamping block 3, a baffle 9 that covers the opening 205 is detachably installed on the first slider 2, that is, the opening 205 is arranged on the groove wall on the right side of the slider groove 203, and the baffle 9 is detachably installed on the first slider 2 by screws to block the opening 205, when the second rack 70 needs to be maintained, the baffle 9 can be removed.

[0030] Although the utility model has been described in detail above with general description and specific implementation, it is obvious to those skilled in the art that some modifications or improvements can be made on the basis of the utility model. Therefore, these modifications or improvements made on the basis of not deviating from the spirit of the utility model all belong to the range of protection required by the utility model.

Claims

1. A clamping mechanism of a travel adjustable clamp, characterized by: The utility model provides a base is provided with first slider capable of being limited linear sliding on the top surface of base, the upper portion of the side surface perpendicular to the direction of movement of first slider is inclined from top to bottom and is inclined to the direction of moving away from first slider, the clamping block is arranged on the inclined surface of slider and slides along the inclined surface of slider, the upper portion of the inclined surface of slider is provided with the open upper end of the limiting sliding groove with the axis parallel to the inclined surface of slider, the clamping block is provided with the second slider that matches the sliding in the limiting sliding groove, the second slider is provided with the adjusting bolt that is screwed on the lower groove wall of limiting sliding groove and the axis is parallel to the inclined surface of slider.

2. The clamping mechanism of the adjustable stroke clamp according to claim 1, wherein The upper end surface and the lower end surface of the second slider are parallel to the lower groove wall of the limiting sliding groove.

3. The clamping mechanism of the adjustable stroke clamp of claim 1, wherein The clamping block is provided with the anti-skid groove on the surface opposite to the second slider.

4. The clamping mechanism of the adjustable stroke clamp according to any one of claims 1 to 3, characterized in that: The clamping block is the clamping block of inverted right-angle trapezoid, and the second slider is arranged on the inclined surface of the clamping block.

5. The clamping mechanism of the adjustable stroke clamp of claim 1, wherein: The inclined surface of the slider is provided with the dovetail sliding groove with the open upper end and lower end and the axis parallel to the inclined surface of the slider, the clamping block is provided with the sliding arm that matches the sliding in the dovetail sliding groove, the limiting sliding groove is arranged on the upper portion of the groove bottom of the dovetail sliding groove, and the second slider is arranged on the surface of the sliding arm away from the clamping block.

6. The clamping mechanism of the adjustable stroke clamp of claim 1, wherein The adjusting bolt is sleeved with the expansion spring between the bottom surface of the second slider and the lower groove wall of the limiting sliding groove.

7. The clamping mechanism of the adjustable stroke clamp of claim 1, wherein The lower groove wall of the limiting sliding groove is provided with the threaded through hole connected with the adjusting bolt.

8. The clamping mechanism of the adjustable stroke clamp of claim 1, wherein: The top surface of the base is provided with the first rack, the bottom surface of the first slider is provided with the slider groove, the second rack with the top surface spaced from the groove bottom of the slider groove and capable of being engaged with the first rack is installed in the slider groove, the groove bottom of the slider groove is provided with the slider threaded hole penetrating the top end of the first slider, and the limiting bolt with the lower end penetrating the slider threaded hole and connected with the top end of the second rack is threadedly connected in the slider threaded hole.

9. The clamping mechanism of the adjustable stroke clamp of claim 8, wherein The groove wall of the slider groove away from the clamping block is provided with the opening, and the baffle is detachably installed on the first slider and covers the opening.

10. The clamping mechanism of the adjustable stroke clamp of claim 1, wherein The base is the base with the T-shaped cross section, and the bottom surface of the first slider is provided with the slider clamping groove capable of being matched and clamped with the base.

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