Positioning clamp for front side and back side of part

Abstract

The utility model relates to a part front and back positioning clamp, which belongs to the technical field of positioning clamps and comprises a supporting table top, the upper surface of the supporting table top is provided with a clamping mechanism for positioning the front and back of a part, and the lower side of the supporting table top is provided with a bottom table. An adjusting mechanism used for adjusting the height of the supporting table top is arranged at the bottom of the right side of the bottom table. The clamping mechanism comprises three first positioning columns, four second positioning columns, a plurality of pressing plates, a plurality of inserting rods, a plurality of foot pads and a plurality of telescopic pieces. The three positioning columns are fixed to the front end of the upper surface of the supporting table top. According to the part front and back face positioning clamp, the clamping mechanism is arranged on the upper surface of the supporting table top, a worker can conveniently position and clamp the front face and the back face of a part, so that the to-be-machined part of the part can be prevented from being shielded, the part can be conveniently leveled up through arranged foot pads, and replacement or height adjustment after abrasion can be conveniently achieved; and the part machining effect is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of positioning fixtures, in particular to a front and back positioning fixture for a part. Background Art

[0002] A fixture is a device used to fix the object to be processed during the mechanical manufacturing process so that it occupies the correct position for construction or inspection. The fixture is usually composed of positioning elements, clamping devices, tool guide elements, indexing devices, connecting elements and clamping bodies.

[0003] For an existing part, since the part to be processed is the upper surface after being fixed and installed, but the processing position is special, the traditional left and right clamping positioning and upper side pressing cannot be used to clamp the part. A new clamping method is needed to clamp and position the part. Therefore, a part front and back positioning fixture is proposed to solve the above problem. Utility Model Content

[0004] In response to the shortcomings of the existing technology, the utility model provides a front and back positioning fixture for parts, which has the advantages of being able to position and clamp both the front and back sides of the parts, solving the problem of an existing part that the part to be processed is the upper surface after being fixed and installed, but the processing position is special, and the traditional left and right clamping positioning and upper side pressing cannot be used to clamp the part.

[0005] To achieve the above-mentioned object, the present invention provides the following technical solution: a part front and back positioning fixture, comprising a support table, the upper surface of which is provided with a clamping mechanism for positioning both the front and back sides of the part, a bottom side of which is provided with a base, and a bottom right side of which is provided with an adjustment mechanism for adjusting the height of the support table;

[0006] The clamping mechanism includes three first positioning columns, four second positioning columns, several pressure plates, multiple insertion rods, multiple pads and multiple telescopic parts. The three first positioning columns are fixed to the front end of the upper surface of the support table, and the four second positioning columns are fixed in pairs to the rear end of the upper surface of the support table. The pressure plate is fixed to the upper surface of the first positioning column and the second positioning column, the insertion rod is fixed to the upper surface of the support table, the pads are threadedly connected to the support table, and the telescopic parts are arranged in the inner cavity of the first positioning column and the second positioning column.

[0007] By adopting this technical solution, it is convenient for workers to position and clamp the front and back sides of the parts, thereby avoiding blocking the part to be processed.

[0008] Furthermore, the insertion rods and the pads are both distributed in a square shape on the upper surface of the support table, and the second positioning columns at the left and right ends are evenly distributed on the left and right ends of the vertical center axis of the support table.

[0009] By adopting this technical solution, the provided feet can not only facilitate leveling of parts, but also facilitate replacement or height adjustment after wear, so as to improve the effect of part processing.

[0010] Furthermore, the telescopic part includes a telescopic rod, a return spring, a slide plate and a blocking block. The upper surfaces of the first positioning column and the second positioning column are both provided with a fixing groove. The telescopic rod is fixed to the inner bottom wall of the fixing groove. The return spring is movably sleeved on the outer surface of the telescopic rod. The slide plate is fixed to the outer surface of the telescopic rod, and the blocking block is fixed to the upper surface of the slide plate.

[0011] By adopting this technical solution, the telescopic member can adjust the height of the pressing plate, thereby facilitating the entry of parts and clamping the parts.

[0012] Furthermore, both ends of the return spring are fixedly connected to the side of the fixing slot opposite to the slide plate, and the slide plate performs linear movement up and down in the inner cavity of the fixing slot.

[0013] Furthermore, the upper surface of the block is fixed to the first positioning column and the second positioning column, the size of the top of the fixing groove cavity is smaller than the size of the middle and bottom of the fixing groove cavity, and the size of the slide is larger than the size of the top of the fixing groove cavity.

[0014] By adopting this technical solution, the movement of the clamping block drives the movement of the first positioning post or the second positioning post, and can prevent the slide plate from sliding out of the inner cavity of the fixing groove.

[0015] Furthermore, the adjusting mechanism includes a driving motor, a screw, a gear plate, a rotating shaft, a rotating gear, a rotating plate and a hinge rod. The driving motor is fixed to the bottom of the right side of the base, the output shaft of the driving motor passes through the base and extends to the inner cavity of the base and is fixed to the screw, the gear plate and the screw are threadedly connected, the rotating shaft is rotatably connected to the center between the opposite sides of the front and rear side walls of the inner cavity of the base through a bearing, the rotating gear is fixed to the outer surface of the rotating shaft, the rotating plate is fixed to the outer surface of the rotating shaft, the rotating gear is meshed with the gear plate, the hinge rod is hingedly connected to the left side of the rotating plate, and the other end of the hinge rod is hingedly connected to the lower surface of the support table through a hinge seat.

[0016] By adopting this technical solution, the height of the supporting table can be adjusted to adapt to workers of different heights, which is more convenient for workers to position furniture and can facilitate the adjustment of the height of the footrests, thereby improving practicality.

[0017] Furthermore, a protective box is provided on the outer surface of the driving motor, a limit strip is fixed on the inner bottom wall of the base, a limit block is fixed on the lower surface of the tooth plate, and the limit block performs horizontal linear motion in the inner cavity of the limit strip.

[0018] By adopting this technical solution, the provided limiting blocks and limiting bars can limit the movement of the tooth plate.

[0019] Furthermore, telescopic sleeve rods are fixed at both left and right ends between the support table and the opposite side of the base, and the telescopic sleeve rods are a fixed rod and an inner rod that are nested with each other.

[0020] By adopting this technical solution, the provided telescopic sleeve can limit the movement of the supporting table so that it can only move in a straight line.

[0021] Compared with the existing technology, the technical solution of this application has the following beneficial effects:

[0022] 1. The front and back positioning fixture of the part is equipped with a clamping mechanism on the upper surface of the support table, which can facilitate the staff to position and clamp the front and back sides of the part, thereby avoiding blocking the part to be processed. The provided feet can not only make it easier to level the parts, but also facilitate replacement or height adjustment after wear, so as to improve the effect of part processing.

[0023] 2. The front and back positioning fixture of the part is capable of adjusting the height of the supporting table by setting an adjustment mechanism in the inner cavity of the base, so that it can adapt to workers of different heights, making it more convenient for workers to position parts, and can also facilitate the adjustment of the height of the footrests, thereby improving practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic diagram of the structure of the utility model;

[0025] Figure 2 This is a schematic diagram of the structure of the clamping mechanism of the utility model;

[0026] Figure 3 This is a schematic top view of the clamping mechanism structure of the utility model;

[0027] Figure 4 This is a schematic diagram of the structure of the adjustment mechanism of the utility model.

[0028] In the figure: 1. Support table; 2. Clamping mechanism; 21. First positioning column; 22. Second positioning column; 23. Pressing plate; 24. Inserting rod; 25. Foot pad; 26. Telescopic member; 261. Telescopic rod; 262. Return spring; 263. Slide plate; 264. Block; 265. Fixing slot; 3. Base; 4. Adjusting mechanism; 41. Driving motor; 42. Screw; 43. Tooth plate; 44. Rotating shaft; 45. Rotating gear; 46. Rotating plate; 47. Articulated rod. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0030] See also Figure 1 In this embodiment, a part front and back positioning fixture includes a support table 1, the upper surface of the support table 1 is provided with a clamping mechanism 2 for positioning both the front and back sides of the part, the lower side of the support table 1 is provided with a base 3, and the bottom of the right side of the base 3 is provided with an adjustment mechanism 4 for adjusting the height of the support table 1.

[0031] See also Figures 2 to 3 In order to position and clamp the front and back sides of the parts, the clamping mechanism 2 in this embodiment includes three first positioning columns 21, four second positioning columns 22, a number of pressure plates 23, a plurality of insertion rods 24, a plurality of pads 25 and a plurality of telescopic parts 26. The three first positioning columns 21 are fixed to the front end of the upper surface of the support table 1, and the four second positioning columns 22 are fixed in pairs to the rear end of the upper surface of the support table 1. The pressure plate 23 is fixed to the upper surface of the first positioning columns 21 and the second positioning columns 22, and the insertion rods 24 are fixed to the upper surface of the support table 1. The pads 25 are threadedly connected to the support table 1. The provided pads 25 are convenient for leveling the parts on the one hand, and on the other hand, they are convenient for replacement or height adjustment after wear. The telescopic part 26 is provided in the inner cavity of the first positioning column 21 and the second positioning column 22. The front side of the part is facing away from the support table 1, and the part is placed on the outside of the two second positioning columns 22, and the holes on the back of the part are aligned with the insertion rods 24, and the pressure plate 23 is pulled upward.

[0032] In this embodiment, the insertion rods 24 and the pads 25 are both square and distributed on the upper surface of the support table 1 , and the left and right second positioning columns 22 are evenly distributed on the left and right ends of the vertical center axis of the support table 1 .

[0033] Among them, the telescopic part 26 includes a telescopic rod 261, a return spring 262, a slide 263 and a block 264. The upper surfaces of the first positioning column 21 and the second positioning column 22 are both provided with a fixing groove 265. The telescopic rod 261 is fixed to the inner bottom wall of the fixing groove 265. The return spring 262 is movably sleeved on the outer surface of the telescopic rod 261. The slide 263 is fixed to the outer surface of the telescopic rod 261. The block 264 is fixed to the upper surface of the slide 263. The movement of the pressure plate 23 drives the movement of the block 264, thereby causing the slide 263 to slide upward. The movement of the slide 263 causes the telescopic rod 261 and the return spring 262 fixed thereto to extend, and then presses the parts downward so that the parts fit into the support table 1.

[0034] In this embodiment, the two ends of the return spring 262 are respectively fixedly connected to the opposite side of the fixed groove 265 and the slide plate 263. The slide plate 263 makes linear up and down motion in the inner cavity of the fixed groove 265. The upper surface of the block 264 is fixed to the first positioning column 21 and the second positioning column 22. The size of the top of the inner cavity of the fixed groove 265 is smaller than the size of the middle and bottom of the inner cavity of the fixed groove 265. The size of the slide plate 263 is larger than the size of the top of the inner cavity of the fixed groove 265.

[0035] It can be understood that by loosening the pressure plate 23, the pressure plate 23 can move downward under the action of the return spring 262 and the telescopic rod 261, thereby clamping the recessed part of the part and positioning the front of the part. When clamping the back of the part, the back of the part can be turned away from the support table 1, so that the part is placed on the outside of the two first positioning columns 21, and then the left and right ends of the part can be clamped according to the above steps.

[0036] It should be noted that the provided clamping mechanism 2 can facilitate the staff to position and clamp the front and back sides of the part, thereby avoiding blocking the part to be processed.

[0037] See also Figure 4 The adjusting mechanism 4 in this embodiment includes a driving motor 41, a screw 42, a gear plate 43, a rotating shaft 44, a rotating gear 45, a rotating plate 46 and a hinge rod 47. The driving motor 41 is fixed to the bottom of the right side of the base 3. The output shaft of the driving motor 41 passes through the base 3 and extends to the inner cavity of the base 3 and is fixed to the screw 42. The gear plate 43 is threadedly connected to the screw 42. When the driving motor 41 is started, the output shaft of the driving motor 41 rotates to drive the screw 42 to rotate. The rotation of the screw 42 causes the gear plate 43 threadedly connected to its surface to move. The rotating shaft 44 is rotatably connected to the center between the opposite sides of the front and rear side walls of the inner cavity of the base 3 through a bearing. The rotating gear 45 is fixed to the outer surface of the rotating shaft 44. The rotating gear 45 is meshed with the gear plate 43. The movement of the gear plate 43 causes the rotating gear 45 meshed with it to rotate, and the rotation of the rotating gear 45 causes the rotating shaft 44 fixed in its inner cavity to rotate.

[0038] The rotating plate 46 is fixed to the outer surface of the rotating shaft 44, and the hinged rod 47 is hingedly connected to the left side of the rotating plate 46. The other end of the hinged rod 47 is hingedly connected to the lower surface of the support table 1 through a hinge seat. The rotation of the rotating shaft 44 causes the rotating plate 46 fixed on its surface to rotate. The rotation of the rotating plate 46 drives the hinged rod 47 to move, and the height of the support table 1 is increased under the limit of the two telescopic sleeves.

[0039] In this embodiment, a protective box is provided on the outer surface of the driving motor 41, a limit strip is fixed on the inner bottom wall of the base 3, a limit block is fixed on the lower surface of the tooth plate 43, and the limit block moves horizontally in the inner cavity of the limit strip. Telescopic sleeves are fixed at both ends between the support table 1 and the opposite side of the base 3, and the telescopic sleeves are composed of a fixed rod and an inner rod that are nested with each other.

[0040] It should be noted that the adjustment mechanism 4 is capable of adjusting the height of the support table 1 so as to adapt to workers of different heights, making it more convenient for workers to position parts, and making it easier to adjust the height of the footrest 25, thereby improving practicality.

[0041] The working principle of the above embodiment is:

[0042] (1) When clamping the front of the part, turn the front of the part away from the support table 1 and place the part on the outside of the two second positioning columns 22, and align the hole on the back of the part with the insertion rod 24. Pull the pressure plate 23 upward. The movement of the pressure plate 23 drives the movement of the clamping block 264, so that the slide plate 263 slides upward. The movement of the slide plate 263 extends the telescopic rod 261 and the return spring 262 fixed to it. Then press the part downward so that the part fits the support table 1. Then release the pressure plate 23. The pressure plate 23 can move downward under the action of the return spring 262 and the telescopic rod 261, and then can clamp the concave part of the part, so that the front of the part can be positioned. When clamping the back of the part, the back of the part can be turned away from the support table 1, so that the part is placed on the outside of the two first positioning columns 21. Then, follow the above steps to clamp the left and right ends of the part. The provided foot 25 is convenient for leveling the part on the one hand, and convenient for replacement or height adjustment after wear on the other hand.

[0043] (2) When adjusting the height of the support table 1, first start the drive motor 41. The output shaft of the drive motor 41 rotates to drive the screw 42 to rotate. The rotation of the screw 42 causes the tooth plate 43 threadedly connected to its surface to move. At this time, the tooth plate 43 performs linear motion under the action of the limit block and the limit bar. The movement of the tooth plate 43 causes the rotating gear 45 meshed with it to rotate. The rotation of the rotating gear 45 causes the rotating shaft 44 fixed to its inner cavity to rotate. The rotation of the rotating shaft 44 causes the rotating plate 46 fixed to its surface to rotate. The rotation of the rotating plate 46 drives the hinge rod 47 to move, and under the limit of the two telescopic sleeves, the height of the support table 1 is increased.

Claims

1. A fixture for positioning the front and back sides of a part, comprising a support table (1), characterized in that: The upper surface of the support table (1) is provided with a clamping mechanism (2) for positioning both the front and back sides of the part, the lower side of the support table (1) is provided with a base (3), and the bottom of the right side of the base (3) is provided with an adjustment mechanism (4) for adjusting the height of the support table (1); The clamping mechanism (2) comprises three first positioning columns (21), four second positioning columns (22), a plurality of pressure plates (23), a plurality of insertion rods (24), a plurality of pads (25) and a plurality of telescopic members (26), wherein the three first positioning columns (21) are fixed to the front end of the upper surface of the support table (1), and the four second positioning columns (22) are fixed in pairs to the rear end of the upper surface of the support table (1), the pressure plates (23) are fixed to the upper surfaces of the first positioning columns (21) and the second positioning columns (22), the insertion rods (24) are fixed to the upper surface of the support table (1), the pads (25) are threadedly connected to the support table (1), and the telescopic member (26) is arranged in the inner cavity of the first positioning column (21) and the second positioning column (22).

2. A part front and back positioning fixture according to claim 1, characterized in that: The inserting rod (24) and the padding foot (25) are both distributed in a square shape on the upper surface of the support table (1), and the second positioning columns (22) at the left and right ends are evenly distributed at the left and right ends of the vertical center axis of the support table (1).

3. A part front and back positioning fixture according to claim 1, characterized in that: The telescopic member (26) includes a telescopic rod (261), a return spring (262), a slide plate (263) and a clamping block (264). The upper surfaces of the first positioning column (21) and the second positioning column (22) are both provided with a fixing groove (265). The telescopic rod (261) is fixed to the inner bottom wall of the fixing groove (265). The return spring (262) is movably sleeved on the outer surface of the telescopic rod (261). The slide plate (263) is fixed to the outer surface of the telescopic rod (261). The clamping block (264) is fixed to the upper surface of the slide plate (263).

4. A part front and back positioning fixture according to claim 3, characterized in that: The two ends of the return spring (262) are respectively fixedly connected to the fixed groove (265) and the side opposite to the slide plate (263), and the slide plate (263) performs linear movement up and down in the inner cavity of the fixed groove (265).

5. The part front and back positioning fixture according to claim 3, characterized in that: The upper surface of the block (264) is fixed to the first positioning column (21) and the second positioning column (22), the size of the top of the inner cavity of the fixing groove (265) is smaller than the size of the middle and bottom of the inner cavity of the fixing groove (265), and the size of the slide plate (263) is larger than the size of the top of the inner cavity of the fixing groove (265).

6. The part front and back positioning fixture according to claim 1, characterized in that: The adjusting mechanism (4) includes a driving motor (41), a screw (42), a tooth plate (43), a rotating shaft (44), a rotating gear (45), a rotating plate (46) and a hinge rod (47), wherein the driving motor (41) is fixed to the bottom of the right side of the base (3), the output shaft of the driving motor (41) passes through the base (3) and extends to the inner cavity of the base (3) and is fixed to the screw (42), the tooth plate (43) is threadedly connected to the screw (42), and the rotating shaft (47) is fixed to the bottom of the base (3). 4) is rotatably connected to the center between the front and rear side walls of the inner cavity of the base (3) through a bearing, the rotating gear (45) is fixed to the outer surface of the rotating shaft (44), the rotating gear (45) is meshed with the tooth plate (43), the rotating plate (46) is fixed to the outer surface of the rotating shaft (44), the hinge rod (47) is hingedly connected to the left side of the rotating plate (46), and the other end of the hinge rod (47) is hingedly connected to the lower surface of the support table (1) through a hinge seat.

7. A part front and back positioning fixture according to claim 6, characterized in that: A protective box is provided on the outer surface of the driving motor (41), a limiting strip is fixed to the inner bottom wall of the base (3), and a limiting block is fixed to the lower surface of the tooth plate (43), and the limiting block performs horizontal linear motion in the inner cavity of the limiting strip.

8. The fixture for positioning the front and back surfaces of a part according to claim 6, characterized in that: Telescopic sleeve rods are fixed at both left and right ends between the supporting table surface (1) and the bottom platform (3) on the opposite side. The telescopic sleeve rods are a fixed rod and an inner rod that are nested with each other.

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