Positioning and clamping tool

Abstract

The invention provides a positioning and clamping tool which comprises a mounting base, a containing cavity is formed in the rear side of the mounting base, a plurality of first mounting holes are formed in the front side of the mounting base and are transversely arranged at equal intervals, clamping rods are mounted in the first mounting holes and used for containing raw material rods to be machined, and the rear ends of the clamping rods penetrate into the containing cavity; first gears are installed at the rear ends of the material clamping rods, the first gears between the adjacent material clamping rods are in meshing transmission, a first driving part is further installed in the first containing cavity to drive the first gear on the first material clamping rod on the installation base to rotate, and in other words, the first driving part drives the multiple material clamping rods to rotate synchronously. The positioning and clamping tool is compact in layout, machining of an outer circle, an inner circle and a side hole can be integrated in one procedure, the accuracy of the machining position of a product is guaranteed, the product does not need to be repeatedly clamped and machined, the machining procedures of the product are reduced, and the machining efficiency and accuracy of the product are effectively improved.

Description

Technical Field

[0001] The invention relates to the technical field of positioning fixtures, in particular to a positioning clamping tool. Background Art

[0002] The manufacturing of shaft-shaped products involves machining several side holes on their sides. Usually, for products with side holes, the outer and inner circles are first machined using three-axis equipment, and then the side hole structure is machined on a four-axis device. This structure has very high positioning requirements for the center hole, and the use of traditional machine tool fixtures requires multiple clamping to machine the side holes, which will result in large cumulative clamping errors, making the processing steps of the entire product more complicated and cumbersome, the processing efficiency of the entire product is low, and the quality is unstable, making it difficult to meet the needs of modern industrial production. Summary of the invention

[0003] The purpose of the present invention is to provide a positioning and clamping tool to solve the technical problems in the background technology.

[0004] To achieve the aforementioned purpose, the present invention provides the following technical solutions:

[0005] A positioning and clamping tool comprises a mounting seat, a first accommodating cavity is provided on the rear side of the mounting seat, and a plurality of first mounting holes are provided on the front side of the mounting seat, and the plurality of first mounting holes are arranged equidistantly in the horizontal direction. A clamping rod is installed in each of the first mounting holes for placing a raw material rod to be processed, and the rear end of the clamping rod passes into the first accommodating cavity. A first gear is installed on the rear end of the clamping rod, and the first gears between adjacent clamping rods are meshed for transmission. A first driving member is also installed in the first accommodating cavity to drive the first gear on the first clamping rod on the mounting seat to rotate, that is, the first driving member drives the plurality of clamping rods to rotate synchronously.

[0006] The first driving member includes a first cylinder and a first rack. The first rack is tiltedly arranged in the accommodating cavity and meshes with the first gear. The first cylinder is tiltedly installed in the first accommodating cavity. A clearance hole is provided on the side of the mounting seat to match the position of the first rack. A one-way bearing is provided between the first gear and the clamping rod.

[0007] The clamping rod is a cylindrical structure, and the clamping rod includes a clamping head and a main rod body. The clamping head is at the front end of the main rod body, and a first through hole is provided in the clamping head. The main rod body is provided with a second through hole running through the front and rear ends thereof and connected with the first through hole. The front end of the clamping head is a clamping part, and the rear end of the clamping head is a positioning part. The clamping part is outside the first mounting hole, and the positioning part is inside the first mounting hole. A side opening is provided on the front side of the clamping part, and the side opening is connected with the first through hole. A first screw is provided at the position of the side opening to lock and close the side opening. The clamping part is also provided with a third through hole, and the third through hole is connected with the first through hole. A second screw is threadedly installed in the third through hole to conflict with the raw material rod in the first through hole, and the positioning part is provided with three positioning grooves equidistantly along the axis of the clamping head.

[0008] A compression spring is sleeved on the rear end of the main rod body, and the compression spring is squeezed between the first gear and the side wall of the accommodating cavity.

[0009] A second accommodating cavity is also provided below the front side of the mounting seat, and a plurality of locking members are installed in the second accommodating cavity corresponding to the positions of the clamping rods. A single locking member is used to press and position a single clamping rod.

[0010] The locking member includes a second cylinder and a push rod. The second cylinder is fixed in the second accommodating cavity and below the chuck. The bottom end of the push rod is drive-connected to the second cylinder, and the top of the push rod vertically passes through the first mounting hole and is plugged into the positioning groove on the chuck.

[0011] A concave first track is provided in the first accommodating cavity. The first track is tilted. A first slider is provided in the direction of the first rack close to the first track. The first slider slides in the first track. The cross section of the first track is a T-shaped structure.

[0012] A limiting block protruding outward is also provided above the first track, and a long limiting hole is provided on the first rack, and the limiting block slides in the limiting hole.

[0013] A cover box is fixed on the air avoidance hole of the mounting seat for covering the first rack.

[0014] Compared with the prior art, the positioning and clamping tool provided by the present invention has a compact layout and can synchronously clamp multiple raw material bars for processing. The outer circle, inner circle and side hole of the product can be directly processed through the clamping tool, and the side hole structure is integrated with the outer circle and inner circle structure for processing. The processing can be completed in one process, and there is no need to repeatedly clamp the product for processing, thereby reducing the product processing steps and effectively improving the processing efficiency and precision of the product. In addition, the present application adopts a driving structure method in which an inclined rack and a gear are matched, which can effectively reduce the volume and weight of the entire clamping tool, and facilitate its subsequent maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 : A three-dimensional structural diagram of this application;

[0016] Figure 2 : Structural diagram of the material clamping rod being installed in the mounting seat;

[0017] Figure 3 : A three-dimensional diagram of the internal structure of the first accommodating cavity;

[0018] Figure 4 : Installation structure diagram of the first gear and the first rack;

[0019] Figure 5 : Three-dimensional structure diagram of the mounting base;

[0020] Figure 6 : Three-dimensional structure diagram of clamping rod;

[0021] Figure 7 : A three-dimensional structural diagram of the first rack;

[0022] Figure 8 :Schematic diagram of the effect of using this application. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0024] Specific embodiment 1: Please refer to Figures 1 to 8 A positioning and clamping tool of the present embodiment comprises a mounting seat 1, a first accommodating cavity 101 is provided on the rear side of the mounting seat 1, a plurality of first mounting holes 103 are provided on the front side of the mounting seat 1, the plurality of first mounting holes 103 are arranged equidistantly in the horizontal direction, a clamping rod 5 is installed in each of the first mounting holes 103 for placing a raw material rod 14 to be processed, the rear end of the clamping rod 5 passes through the first accommodating cavity 101, a mounting plate 2 is fixedly provided on the rear side of the mounting seat 1 to cover the first accommodating cavity 101, and the rear end of the clamping rod 5 passes through the mounting plate 2. In the present embodiment, five first mounting holes 103 are provided on the mounting seat 1, a first gear 10 is installed at the rear end of the clamping rod 5, the first gear 10 is coaxially installed with the clamping rod 5, the first gears 10 between adjacent clamping rods 5 are meshed and transmitted with each other, a first driving member 13 is also installed in the first accommodating cavity 101 to drive the first gear 10 on the first clamping rod 5 on the mounting seat 1 to rotate, that is, the first driving member 13 drives the plurality of clamping rods 5 to rotate synchronously.

[0025] The first driving member 13 includes a first cylinder 1301 and a first rack 1302. The first rack 1302 is tiltedly arranged in the accommodating cavity and meshes with the first gear 10. The first cylinder 1301 is tiltedly installed in the first accommodating cavity 101. A clearance hole is provided on the side of the mounting seat 1 to match the position of the first rack 1302. A one-way bearing 11 is provided between the first gear 10 and the clamping rod 5. When the first cylinder 1301 drives the first rack 1302 to move back and forth, thereby driving the first gear 10 to rotate, the first rack 1302 is pushed forward and can only rotate once. When the first cylinder 1301 is pulled back, because it is a one-way bearing 11, it is idling when pulled back and will not drive the first gear 10 to rotate, that is, the clamping rod 5 will not rotate.

[0026] In the present application, the clamping rod 5 is a cylindrical structure, which includes a chuck 7 and a main rod body 6. The chuck 7 is at the front end of the main rod body 6. In the present application, a compression spring 12 is provided at the rear end of the main rod body 6. The compression spring 12 is squeezed between the first gear 10 and the side wall of the first accommodating cavity 101, so that the entire clamping rod 5 is an elastic mounting structure on the mounting seat 1.

[0027] A first through hole 703 is provided in the chuck 7, and a second through hole 601 penetrating through the front and rear ends of the main rod body 6 and communicating with the first through hole 703 is provided. The front end of the chuck 7 is a clamping portion 701, and the rear end of the chuck 7 is a positioning portion 702. The clamping portion 701 is outside the first mounting hole 103, and the positioning portion 702 is inside the first mounting hole 103. A side opening 701-1 is provided on the front side of the clamping portion 701, and the side opening 701-1 is communicated with the first through hole 703. A first screw 8 is provided at the position of the side opening 701-1 to lock and close the side opening 701-1. The clamping portion 701 is also provided with a third through hole 701-2, and the third through hole 701-2 is communicated with the first through hole 703. A second screw 9 is installed in the inner thread of the third through hole 701-2 to conflict with the raw material rod 14 in the first through hole 703, that is, the raw material rod 14 is installed by locking it in the clamping portion 701 through the first screw 8 and the second screw 9.

[0028] A second accommodating cavity 102 is further provided at the lower front side of the mounting seat 1 . A plurality of locking members 4 are installed in the second accommodating cavity 102 corresponding to the positions of the clamping rods 5 . A single locking member 4 is used to compress and position a single clamping rod 5 .

[0029] The locking member 4 includes a second cylinder 401 and a ejecting rod 402. The second cylinder 401 is fixed in the second accommodating cavity 102 and below the chuck 7. The bottom end of the ejecting rod 402 is drive-connected to the second cylinder 401, and the top thereof vertically passes through the first mounting hole 103. In the present application, three positioning grooves 702-1 are equidistantly provided on the positioning portion 702 of the chuck 7 along the axis of the chuck 7. The top of the ejecting rod 402 is plugged into the positioning groove 702-1, that is, when rotated to the set angle, the ejecting rod 402 is inserted into the positioning groove 702-1, so that the clamping rod 5 is fixed in position in the first mounting hole 103, ensuring that it maintains a stable position during hole processing.

[0030] The first accommodating cavity 101 is provided with a concave first track 104, the first track 104 is tilted, the first rack 1302 is provided with a first slider 1302-2 in the direction close to the first track 104, the first slider 1302-2 slides in the first track 104, and the cross section of the first track 104 is a T-shaped structure. A stop block 105 protruding outward is also provided above the first track 104, the first rack 1302 is provided with a long stop hole 1302-1, and the stop block 105 slides in the stop hole 1302-1. The setting of the first track 104 and the stop block 105 allows the first rack 1302 to move along the set tilt angle, so as to maintain the stability of the rotation angle of the first gear 10 driven by it.

[0031] In addition, since the first rack 1302 is tilted, it will extend to the outside of the mounting base 1 when moving, and a cover box 3 is fixed on the air avoidance hole of the mounting base 1 to cover the first rack 1302 to protect the first rack 1302 from damage.

[0032] In the present application, the raw material rod 14 to be processed is loaded into the clamping rod 5, and one end of the raw material rod 14 extends out of the outside of the chuck 7. After extending to the set length, the raw material rod 14 is locked in the clamping rod 5 by using the first screw 8 and the second screw 9, and the first rack 1302 drives the first gear 10 to rotate, that is, multiple clamping rods 5 rotate synchronously to the set angle, and the first rack 1302 is reset. In this embodiment, the first rack 1302 drives the first gear 10 to rotate 120 degrees. After rotating to the set position, the ejector rod 402 moves upward accordingly and is inserted into the positioning groove 702-1, and the position of the clamping rod 5 in the first mounting hole 103 is limited. The tool on the machine table then processes the hole position of the raw material rod 14. After completing the processing of one hole position, the ejector rod 402 is reset and disengaged from the positioning groove 702-1, and the first rack 1302 drives the first gear 10 to rotate 120 degrees again, and this is repeated.

[0033] Compared with the prior art, the positioning and clamping tool provided by the present invention has a compact layout and can synchronously clamp multiple raw material bars for processing. The outer circle, inner circle and side hole of the product can be directly processed through the clamping tool, and the side hole structure is integrated with the outer circle and inner circle structure for processing. The processing can be completed in one process, and there is no need to repeatedly clamp the product for processing, thereby reducing the product processing steps and effectively improving the processing efficiency and precision of the product. In addition, the present application adopts a driving structure method in which an inclined rack and a gear are matched, which can effectively reduce the volume and weight of the entire clamping tool, and facilitate its subsequent maintenance.

[0034] It will be apparent to those skilled in the art that the invention is not limited to the details of the foregoing exemplary embodiments and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered in all respects as exemplary and non-restrictive, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0035] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A positioning and clamping tool, characterized in that: It includes a mounting seat, a first accommodating cavity is provided on the rear side of the mounting seat, and a plurality of first mounting holes are provided on the front side of the mounting seat, and the plurality of first mounting holes are arranged equidistantly in the horizontal direction, and a clamping rod is installed in each of the first mounting holes for placing the raw material rod to be processed, and the rear end of the clamping rod passes into the first accommodating cavity, and a first gear is installed on the rear end of the clamping rod, and the first gears between adjacent clamping rods are meshed and transmitted with each other, and a first driving member is also installed in the first accommodating cavity to drive the first gear on the first clamping rod on the mounting seat to rotate, that is, the first driving member drives the plurality of clamping rods to rotate synchronously.

2. A positioning and clamping tool according to claim 1, characterized in that: The first driving member includes a first cylinder and a first rack. The first rack is tiltedly arranged in the first accommodating cavity and meshes with the first gear. The first cylinder is tiltedly installed in the first accommodating cavity. A clearance hole is provided on the side of the mounting seat to match the position of the first rack. A one-way bearing is provided between the first gear and the clamping rod.

3. A positioning and clamping tool according to claim 2, characterized in that: The clamping rod is a cylindrical structure, and the clamping rod includes a clamping head and a main rod body. The clamping head is at the front end of the main rod body, and a first through hole is provided in the clamping head. The main rod body is provided with a second through hole running through the front and rear ends thereof and connected with the first through hole. The front end of the clamping head is a clamping part, and the rear end of the clamping head is a positioning part. The clamping part is outside the first mounting hole, and the positioning part is inside the first mounting hole. A side opening is provided on the front side of the clamping part, and the side opening is connected with the first through hole. A first screw is provided at the position of the side opening to lock and close the side opening. The clamping part is also provided with a third through hole, and the third through hole is connected with the first through hole. A second screw is threadedly installed in the third through hole to conflict with the raw material rod in the first through hole, and the positioning part is provided with three positioning grooves equidistantly along the axis of the clamping head.

4. A positioning and clamping tool according to claim 3, characterized in that: A compression spring is sleeved on the rear end of the main rod body, and the compression spring is squeezed between the first gear and the side wall of the accommodating cavity.

5. A positioning and clamping tool according to any one of claims 1 to 4, characterized in that: A second accommodating cavity is also provided below the front side of the mounting seat, and a plurality of locking members are installed in the second accommodating cavity corresponding to the positions of the clamping rods. A single locking member is used to press and position a single clamping rod.

6. A positioning and clamping tool according to claim 5, characterized in that: The locking member includes a second cylinder and a push rod. The second cylinder is fixed in the second accommodating cavity and below the chuck. The bottom end of the push rod is drive-connected to the second cylinder, and the top of the push rod vertically passes through the first mounting hole and is plugged into the positioning groove on the chuck.

7. A positioning and clamping tool according to claim 6, characterized in that: A concave first track is provided in the first accommodating cavity. The first track is tilted. A first slider is provided in the direction of the first rack close to the first track. The first slider slides in the first track. The cross section of the first track is a T-shaped structure.

8. A positioning and clamping tool according to claim 7, characterized in that: A limiting block protruding outward is also provided above the first track, and a long limiting hole is provided on the first rack, and the limiting block slides in the limiting hole.

9. A positioning and clamping tool according to claim 8, characterized in that: A cover box is fixed on the air avoidance hole of the mounting seat for covering the first rack.

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