A clamping device

Abstract

The present invention relates to the field of mechanical processing technology, and discloses a clamping device. The clamping device includes a workbench, a positioning seat, a clamping seat and a locking clamp. The positioning seat is arranged on the workbench, and has a protruding positioning pin; the clamping seat is arranged on the workbench, and has a positioning hole sleeved on the positioning pin; the locking clamp is arranged on the clamping seat, and is used to clamp the target workpiece. Among them, the positioning seat determines the processing position of the target workpiece on the workbench, and the target workpiece is clamped on the clamping seat by the locking clamp. The cooperation of the positioning hole on the clamping seat and the positioning pin on the positioning seat enables the target workpiece to be in the correct processing position, so that the corresponding processing part can be processed. If other parts of the target workpiece are to be processed, as long as the positioning hole on the clamping seat is ensured to be sleeved on the positioning pin on the positioning seat, the assembly error of the secondary clamping can be avoided by overall changing the positions of the clamping seat, the locking clamp and the target workpiece.

Description

Technical Field

[0001] The invention relates to the technical field of mechanical processing, and in particular to a clamping device. Background Art

[0002] During the machining process, in order to ensure machining accuracy, the position of the target workpiece on the machine tool should be fixed to facilitate the target workpiece to be processed or inspected.

[0003] Before machining the target workpiece, the position of the target workpiece on the machine tool must be determined. This process is called positioning. In order to prevent the positioned target workpiece from shifting under the action of the cutting force and to keep it in position during machining, the target workpiece must be clamped and secured. This process is called clamping. The entire process of positioning and clamping the target workpiece on the machine tool is called clamping, and the equipment used is the clamping equipment.

[0004] In order to ensure that the machined surface of the target workpiece can meet the technical requirements of size, geometry and manufacturing accuracy specified in the drawing, the target workpiece must be clamped firmly before processing. In particular, for large frame structure workpieces, the clamping effect directly affects the processing quality.

[0005] At present, mechanical processing involving large frame structure workpieces usually adopts manual alignment and clamping. Generally, a pressure plate is used to manually press the target workpiece against the workbench of the machine tool. The clamping speed is slow, the positioning is inaccurate, and the position must be adjusted continuously. After the target workpiece is clamped for the first time and a certain part is processed, if another part needs to be processed, the target workpiece and the pressure plate are generally removed for a second clamping. In the second clamping, in order to ensure the relative position of the above two processing parts is accurate, repeated measurements and adjustments must be made, which increases the overall processing time of the target workpiece and affects the processing accuracy. Summary of the invention

[0006] Based on the above, the purpose of the present invention is to provide a clamping device. The clamping device can solve the problems of cumbersome clamping operation and difficult secondary clamping and positioning during the machining process of large frame structure workpieces, and ensure the machining quality and efficiency of the target workpiece through rapid clamping and precise positioning.

[0007] To achieve the above object, the present invention adopts the following technical solutions:

[0008] A clamping device, comprising:

[0009] Workbench;

[0010] A positioning seat, arranged on the workbench, having a protruding positioning pin;

[0011] A mounting seat, arranged on the workbench, having a positioning hole sleeved on the positioning pin;

[0012] The locking clamp is arranged on the clamping seat and is used for clamping the target workpiece.

[0013] Preferably, the locking clamp includes a locking seat installed on the clamping seat, and a vertical pad and a horizontal pad are provided on one side of the locking seat, the vertical pad is abutted between the side of the locking seat and the side of the target workpiece, and the horizontal pad is abutted between the top of the clamping seat and the bottom of the target workpiece.

[0014] Preferably, the locking clamp further comprises a locking arm hinged to the locking seat, the locking seat has a first positioning hole, and the locking arm has a second positioning hole and a third positioning hole;

[0015] The locking clamp has a loose state in which the first positioning hole faces the second positioning hole and a locked state in which the first positioning hole faces the third positioning hole.

[0016] Preferably, the locking clip further comprises a locking pin:

[0017] In the relaxed state, the locking pin is inserted into the first positioning hole and the second positioning hole;

[0018] In the locking state, the locking pin is inserted into the first positioning hole and the third positioning hole.

[0019] Preferably, the locking clamp further comprises a locking screw and a locking plate, the locking screw is threaded into a screw hole on the locking arm, the upper end of the locking screw has a handle, and the lower end of the locking screw is connected to the locking plate.

[0020] Preferably, the locking plate comprises a connecting plate, the connecting plate has a bayonet, and a clamping head arranged at the lower end of the locking screw is clamped in the bayonet.

[0021] Preferably, the locking clamp further comprises a contact plate, the contact plate is mounted on the bottom side of the connecting plate, the clamping head can abut against the contact plate, and under the drive of the locking screw, the contact plate can press the target workpiece.

[0022] Preferably, the clamping head is a hemispherical structure.

[0023] Preferably, the workbench is provided with a T-slot, a T-nut is clamped in the T-slot, and the positioning seat is connected to the T-nut via a bolt.

[0024] Preferably, the T-nut can move along the extension direction of the T-slot.

[0025] The beneficial effects of the present invention are:

[0026] In the present invention, a positioning seat arranged on the workbench determines the position of the target workpiece on the workbench. The target workpiece is clamped on the mounting seat by a locking clamp, so that the mounting seat, the locking clamp and the target workpiece are placed on the workbench as a whole. The positioning hole on the mounting seat and the positioning pin on the positioning seat cooperate so that the target workpiece is in the correct processing position, so that the corresponding processing part can be processed.

[0027] If other parts of the target workpiece are to be processed, as long as the locating hole on the mounting base is sleeved on the locating pin on the locating base, the overall position of the mounting base, the locking clamp and the target workpiece can be changed without affecting the positioning accuracy of the secondary clamping, thus avoiding the assembly error of the secondary clamping, which has a significant effect on ensuring processing quality, improving production efficiency, and reducing labor intensity. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments of the present invention. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the contents of the embodiments of the present invention and these drawings without paying any creative work.

[0029] Figure 1 It is the front view of the clamping device;

[0030] Figure 2 It is a side view of the clamping device in a relaxed state;

[0031] Figure 3 It is a side view of the clamping device in the locked state;

[0032] Figure 4 It is a top view of the card holder;

[0033] Figure 5 It is a partial structural diagram of the locking clamp.

[0034] In the figure:

[0035] 1-working table; 10-T-slot; 11-T-nut;

[0036] 2-positioning seat; 21-positioning pin; 22-positioning plate;

[0037] 3-mounting seat; 30-positioning hole; 31-extending plate; 32-base plate; 33-U-shaped hole; 34-positioning groove; 341-positioning block; 35-mounting screw hole;

[0038] 4-locking clamp; 4a-vertical pad; 4b-horizontal pad; 40-cotter pin; 401-first positioning hole; 402-second positioning hole; 403-third positioning hole; 404-locking pin; 41-locking seat; 42-locking arm; 421-upper arm; 422-lower arm; 43-locking screw; 431-handle; 432-clamp; 44-locking plate; 441-connecting plate; 442-contact plate;

[0039] 5-target workpiece; 5a-bearing seat mounting surface; 5b-bearing seat mounting hole. DETAILED DESCRIPTION

[0040] In order to make the technical problems solved by the present invention, the technical solutions adopted and the technical effects achieved clearer, the technical solutions of the embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings. Obviously, the described embodiments 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 those skilled in the art without creative work are within the scope of protection of the present invention.

[0041] This embodiment provides a clamping device, which includes a workbench 1, a positioning seat 2, a clamping seat 3 and a locking clamp 4.

[0042] See also Figure 1 The positioning seat 2 is arranged on the workbench 1 and has a protruding positioning pin 21; the mounting seat 3 is arranged on the workbench 1 and has a positioning hole 30 (see Figure 4 ); The locking clamp 4 is arranged on the clamping seat 3 and is used to clamp the target workpiece 5.

[0043] In this embodiment, the target workpiece 5 is a large cubic frame structure workpiece. The processing parts of the target workpiece 5 are the bearing seat mounting surfaces 5a and the bearing seat mounting holes 5b arranged on the front and rear sides thereof, and each side is respectively provided with two bearing seat mounting surfaces 5a and two bearing seat mounting holes 5b.

[0044] Specifically, the workbench 1 is a machine tool workbench, and the bearing seat mounting surface 5a and the bearing seat mounting hole 5b are processed by cutting. During processing, the target workpiece 5 must be placed on the workbench 1, and the target workpiece 5 must be positioned and clamped using the above-mentioned clamping equipment, so that the target workpiece 5 always maintains a correct relative position with the machine tool and the tool, thereby ensuring the processing accuracy.

[0045] See also Figure 1 , Figure 2 and Figure 3 The upper surface of the workbench 1 is a horizontal plane, and a plurality of T-shaped slots 10 opening upward are provided on the workbench 1 . The T-shaped slots 10 extend in a straight line in the horizontal direction and pass through the left and right sides of the workbench 1 .

[0046] In this embodiment, a plurality of T-nuts 11 are clamped in the T-slot 10. The T-nuts 11 are inserted from the left or right side of the workbench 1, clamped in the upward notch of the T-slot 10, and can move along the extension direction of the T-slot 10, that is, can move horizontally along a straight line left and right.

[0047] Still see Figure 1 , Figure 2 and Figure 3 The positioning seat 2 is provided with two, including a positioning pin 21 and a positioning plate 22. The positioning pin 21 is vertically arranged and protrudes on the positioning plate 22; the positioning plate 22 is horizontally arranged and has two bolt mounting holes, and bolts are passed through the bolt mounting holes, and the bolts are screwed to the T-nut 11.

[0048] Specifically, the bottom of the positioning plate 22 abuts against the workbench 1 , and the positioning plate 22 is installed on the workbench 1 by means of bolts and T-nuts 11 .

[0049] In this embodiment, the card holder 3 includes a protruding plate 31 and a bottom plate 32 (see Figure 4 There are two extending plates 31, which are horizontally arranged at the left and right sides of the mounting base 3, and vertical positioning holes 30 are arranged on the extending plates 31; there are multiple bottom plates 32, which are horizontally arranged at the bottom of the mounting base 3, and U-shaped holes 33 are arranged on the bottom plates 32. Bolts are inserted into the U-shaped holes 33, and the bolts are screwed to the T-shaped nuts 11.

[0050] Specifically, the bottom of the extension plate 31 is against the positioning plate 22 on the positioning seat 2, the positioning hole 30 is sleeved on the positioning pin 21, the bottom of the foot plate 32 is against the workbench 1, and the foot plate 32 is installed on the workbench 1 through bolts and T-nuts 11. The provision of multiple foot plates 32 ensures that the mounting seat 3 is securely installed.

[0051] Still see Figure 1 , Figure 2 and Figure 3 The positioning seat 2 and the clamping seat 3 are installed on the workbench 1 through the T-nut 11 and the bolt. Since there are multiple T-slots 10 and the T-nut 11 can move horizontally along a straight line, then:

[0052] By clamping the T-nuts used for installing the positioning seat 2 and the mounting seat 3 in different T-slots 10, the positioning seat 2 and the mounting seat 3 can be moved forward and backward;

[0053] By moving the T-nut 11 used for mounting the positioning seat 2 and the clamping seat 3 left and right, the positioning seat 2 and the clamping seat 3 can be moved left and right.

[0054] In this embodiment, the card holder 3 further includes a positioning groove 34 and a mounting screw hole 35 (see Figure 4The positioning groove 34 is opened upwardly and is arranged at the top of the mounting base 3, extending in a straight line in the horizontal direction, and passing through the left and right sides of the mounting base 3; the mounting screw holes 35 are arranged at the top of the mounting base 3, and a plurality of mounting screw holes 35 are arranged along the two sides of the positioning groove 34.

[0055] Specifically, a positioning block 341 is inserted into the positioning groove 34, and a bolt is screwed into the mounting screw hole 35.

[0056] Still see Figure 1 , Figure 2 and Figure 3 The locking clamps 4 are provided with two, and the locking clamps 4 include a locking seat 41 provided on the mounting seat 3. The locking seat 41 is positioned by the positioning block 341, and is installed on the top of the mounting seat 3 by bolts and mounting screw holes 35, and can be installed at various positions distributed along the extending direction of the positioning groove 34 according to actual working conditions.

[0057] See also Figure 2 and Figure 3 A cubic vertical pad 4a and a cubic horizontal pad 4b are provided on one side of the locking seat 41. The vertical pad 4a is vertically arranged, with its side surface abutting against the locking seat 41 and its bottom surface abutting against the top of the mounting seat 3; the horizontal pad 4b is horizontally arranged, arranged on the side of the vertical pad 4a away from the locking seat 41, and its bottom surface also abuts against the top of the mounting seat 3.

[0058] Specifically, the target workpiece 5 is arranged on the side of the vertical pad 4a away from the locking seat 41, the side of the target workpiece 5 is against the vertical pad 4a, and the bottom of the target workpiece 5 is against the horizontal pad 4b. By replacing the vertical pad 4a and the horizontal pad 4b of different specifications, the position of the target workpiece 5 relative to the mounting seat 3 and the locking seat 41 can be adjusted, so as to achieve accurate positioning of the target workpiece 5.

[0059] Still see Figure 2 and Figure 3 The locking clip 4 also includes a locking arm 42, which includes a large arm 421 and a small arm 422. The large arm 421 and the small arm 422 are integrally formed and arranged perpendicular to each other. The large arm 421 is hinged to the locking seat 41 through a pin shaft, and a split pin 40 is clamped on both sides of the pin shaft. The split pin 40 is used to locate the axial position of the large arm 421 along the pin shaft and make the locking arm 42 easy to disassemble and assemble.

[0060] In this embodiment, the locking seat 41 has a first positioning hole 401, and the upper arm 421 has a second positioning hole 402 and a third positioning hole 403 (see Figure 5 ).

[0061] Still see Figure 2 and Figure 3 , the locking clip 4 has:

[0062] The first positioning hole 401 is in a relaxed state facing the second positioning hole 402;

[0063] The first positioning hole 401 is in a locked state facing the third positioning hole 403 .

[0064] Specifically, in the above-mentioned relaxed state, the first positioning hole 401 and the second positioning hole 402 are inserted with a locking pin 404, and the upper arm 421 is in a non-vertical state and away from the target workpiece 5, which is convenient for disassembly and assembly of the target workpiece 5 (see Figure 1 ).

[0065] Specifically, in the above locking state, the first positioning hole 401 and the third positioning hole 403 are inserted with locking pins 404, and the upper arm 421 is in a vertical state and close to the target workpiece 5, which is convenient for clamping the target workpiece 5 (see Figure 1 ).

[0066] Still see Figure 2 and Figure 3 The locking clamp 4 also includes a locking screw 43 and a locking plate 44. The locking screw 43 is vertically arranged with the small arm 422 and is screwed into a screw hole on the small arm 422.

[0067] Specifically, the upper end of the locking screw 43 has a handle 431, and the lower end of the locking screw 43 has a hemispherical clamp 432; the locking plate 44 includes a connecting plate 441 and a contact plate 442, and the contact plate 442 is installed on the bottom side of the connecting plate 441. The connecting plate 441 has a bayonet, and the clamp 432 is clamped in the bayonet, and the clamp 432 can pass through the bayonet and abut against the contact plate 442 (see Figure 5 ).

[0068] See also Figure 3 In the above locking state, the locking screw 43 is in a vertical state, and by rotating the handle 431, the locking screw 43 drives the contact plate 442 to move downward until the contact plate 442 presses the target workpiece 5. The hemispherical clamping head 432 and the contact plate 442 are in point contact, so that the contact plate 442 can adaptively press the top of the target workpiece 5.

[0069] In this embodiment, after the positions of the positioning seat 2 and the clamping seat 3 are adjusted by the T-slot 10 and the T-nut 11, the bolts threaded on the T-nut 11 are tightened, the bolts threaded on the mounting screw holes 35 are tightened, the target workpiece 5 is correctly placed through the vertical pads 4a and the horizontal pads 4b of corresponding specifications, the locking pin 404 is inserted into the first positioning hole 401 and the third positioning hole 403, and under the drive of the locking screw 43, the contact plate 442 presses the target workpiece 5 to complete the clamping of the target workpiece 5, thereby processing the two bearing seat mounting surfaces 5a and the two bearing seat mounting holes 5b on one side.

[0070] Specifically, when processing the two bearing seat mounting surfaces 5a and the two bearing seat mounting holes 5b on the other side, the bolts passing through the U-shaped holes 33 of the mounting base 3 must be removed, and the mounting base 3, the locking clamp 4 and the target workpiece 5 are lifted and flipped as a whole by the lifting equipment, and then the positioning holes 30 on the mounting base 3 are sleeved on the positioning pins 21 on the positioning base 2, and the bolts passing through the U-shaped holes 33 of the mounting base 3 are tightened at the same time, thereby ensuring the relative positions of the bearing seat mounting surfaces 5a and the bearing seat mounting holes 5b on both sides of the target workpiece 5 are accurate, avoiding assembly errors caused by secondary clamping.

[0071] Note that the above are only preferred embodiments of the present invention and the technical principles used. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and that various obvious changes, readjustments and substitutions can be made by those skilled in the art without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in more detail through the above embodiments, the present invention is not limited to the above embodiments, and may include more other equivalent embodiments without departing from the concept of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. A clamping device, characterized in that: include: Workbench (1); A positioning seat (2) is arranged on the workbench (1) and has a protruding positioning pin (21); A mounting seat (3) is arranged on the workbench (1) and has a positioning hole (30) sleeved on the positioning pin (21); A locking clamp (4) is provided on the clamping seat (3) and is used to clamp a target workpiece (5); The workbench (1) is provided with a T-shaped slot (10), a T-shaped nut (11) is clamped in the T-shaped slot (10), and the positioning seat (2) is connected to the T-shaped nut (11) by means of bolts; The T-nut (11) is movable along the extension direction of the T-slot (10); the locking clamp (4) comprises a locking seat (41) mounted on the mounting seat (3); a vertical pad (4a) and a horizontal pad (4b) are provided on one side of the locking seat (41); the vertical pad (4a) is abutted between the side of the locking seat (41) and the side of the target workpiece (5); and the horizontal pad (4b) is abutted between the top of the mounting seat (3) and the bottom of the target workpiece (5); The locking clamp (4) further comprises a locking arm (42) hinged to the locking seat (41); the locking seat (41) has a first positioning hole (401); and the locking arm (42) has a second positioning hole (402) and a third positioning hole (403); The locking clip (4) has a relaxed state in which the first positioning hole (401) faces the second positioning hole (402) and a locked state in which the first positioning hole (401) faces the third positioning hole (403); the locking clip (4) further comprises a locking pin (404): In the relaxed state, the locking pin (404) is inserted into the first positioning hole (401) and the second positioning hole (402); In the locked state, the locking pin (404) is inserted into the first positioning hole (401) and the third positioning hole (403); The mounting base (3) comprises a protruding plate (31) and a base plate (32). The protruding plates (31) are provided with two and are respectively horizontally arranged on the left and right sides of the mounting base (3). The protruding plates (31) are provided with vertical positioning holes (30). The base plates (32) are provided with a plurality and are respectively horizontally arranged at the bottom of the mounting base (3). The base plates (32) are provided with U-shaped holes (33). Bolts are passed through the U-shaped holes (33), and the bolts are screwed to the T-shaped nuts (11).

2. The clamping device according to claim 1, characterized in that: The locking clamp (4) further comprises a locking screw (43) and a locking plate (44); the locking screw (43) is screwed into a screw hole on the locking arm (42); the upper end of the locking screw (43) has a handle (431); and the lower end of the locking screw (43) is connected to the locking plate (44).

3. The clamping device according to claim 2, characterized in that: The locking plate (44) comprises a connecting plate (441), the connecting plate (441) having a bayonet, and a clamping head (432) provided at the lower end of the locking screw (43) is clamped in the bayonet.

4. The clamping device according to claim 3, characterized in that: The locking clamp (4) further comprises a contact plate (442), wherein the contact plate (442) is mounted on the bottom side of the connecting plate (441), the clamping head (432) can abut against the contact plate (442), and under the drive of the locking screw (43), the contact plate (442) can press the target workpiece (5).

5. The clamping device according to claim 3, characterized in that: The clamping head (432) is a hemispherical structure.

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