Annular workpiece clamping tool

Abstract

The utility model provides an annular workpiece clamping tool, which belongs to the field of tool clamps and comprises a cross-shaped support, the cross-shaped support comprises a first support rod and two second support rods, and the two second support rods are respectively arranged on two sides of the middle of the first support rod. Positioning pieces are arranged at the two ends of the first supporting rod and the end, away from the first supporting rod, of the second supporting rod, each positioning piece comprises a positioning seat and a positioning bolt in threaded connection with the interior of the positioning seat, the head of each positioning bolt faces the center position of the first supporting rod, and an abutting protruding block is arranged at the end, away from the head, of each positioning bolt; an arc-shaped abutting face is arranged on the abutting protruding block. The utility model has the advantages of simple structure, low manufacturing cost and lighter whole body, thereby being more labor-saving in operation.

Description

Technical Field

[0001] The utility model relates to the technical field of tooling fixtures, in particular to a circular workpiece clamping tool. Background Art

[0002] Ring-shaped workpieces are widely used in industrial production. Their processing involves multiple steps, including cutting, drilling, deburring, polishing, and welding. When machining ring-shaped workpieces, clamping and positioning are essential. Since most of the workpieces are machined on the outer circumference, positioning on the inner circumference is necessary to facilitate machining of the outer circumference and end faces.

[0003] Currently, clamping fixtures for annular workpieces typically consist of a base, an annular seat, and positioning bolts distributed on the annular seat. The annular workpiece is placed outside the annular seat, and the positioning bolts are tightened against the inner circumference of the annular workpiece to achieve the clamping process. This clamping fixture is not only expensive to manufacture, but also heavy, making it difficult for workers to operate. Utility Model Content

[0004] The purpose of the utility model is to provide a circular workpiece clamping fixture, which has a simple structure, low manufacturing cost, is lighter as a whole and thus saves more effort during operation.

[0005] The embodiment of the present utility model is realized through the following technical scheme: a circular workpiece clamping tool, including a cross-shaped bracket, the cross-shaped bracket includes a first support rod and two second support rods, the two second support rods are respectively arranged on both sides of the middle of the first support rod, both ends of the first support rod and the end of the second support rod away from the first support rod are provided with positioning parts, the positioning parts include a positioning seat and a positioning bolt threadedly connected in the positioning seat, the heads of the positioning bolts are all facing the center position of the first support rod, the end of the positioning bolt away from the head is provided with a tightening protrusion, and the tightening protrusion is provided with an arc-shaped tightening surface.

[0006] Furthermore, the first support rod and the second support rod are both channel steels.

[0007] Furthermore, the positioning seat is slidably arranged in the first support rod or the second support rod, and the first support rod and the second support rod are both provided with multiple through holes, one of the through holes is provided with a connecting bolt, and the positioning seat is provided with a threaded hole for inserting the connecting bolt.

[0008] Furthermore, scale lines are provided on both the first support rod and the second support rod.

[0009] Furthermore, the positioning bolt is a hexagon socket bolt.

[0010] Furthermore, an assembly block is provided at the bottom of the first support rod, and a threaded hole is provided on the bottom surface of the assembly block.

[0011] Furthermore, both ends of the first support rod and the bottom of the second support rod away from the end of the first support rod are provided with assembly holes, and one side of the assembly hole is provided with an assembly notch.

[0012] The technical solution of the embodiment of the utility model has at least the following advantages and beneficial effects:

[0013] 1. The utility model uses channel steel to make a cross-shaped bracket, replacing the structural form of the base and the circular ring seat in the prior art, making the structure simpler, the manufacturing cost lower, and the staff more labor-saving when operating.

[0014] 2. The utility model slides the positioning seat onto the first support rod or the second support rod, and fixes the sliding position of the positioning seat by connecting bolts, so that the overall position of the positioning member can be changed, and circular workpieces of different diameters can be clamped within a larger range, thereby improving the applicability of the tooling. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0016] Figure 1 This is a schematic diagram of the use state of the circular workpiece clamping fixture of the utility model;

[0017] Figure 2 This is a schematic diagram of the overall structure of the circular workpiece clamping fixture of the present invention;

[0018] Figure 3 This is a schematic diagram of the bottom structure of the circular workpiece clamping fixture of the present invention;

[0019] Icon: 1-cross-shaped bracket, 11-first support rod, 12-second support rod, 13-through hole, 131-connecting bolt, 14-scale line, 15-assembly block, 16-assembly hole, 17-assembly notch, 2-positioning piece, 21-positioning seat, 22-positioning bolt, 221-tightening protrusion, 3-workpiece body, 4-assembly base. DETAILED DESCRIPTION

[0020] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0021] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but rather merely represents selected embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort are also within the scope of protection of the present invention.

[0022] Example 1

[0023] The following is further described in conjunction with specific embodiments. Figure 1-Figure 3 As shown, the present invention is a circular workpiece clamping fixture comprising a cross-shaped bracket 1, which is composed of a first support rod 11 and two second support rods 12. The first support rod 11 and the second support rod 12 are both made of channel steel, and the two second support rods 12 are welded to the middle of the first support rod 11 on both sides. The cross-shaped bracket 1 is simple and convenient to manufacture, and the material cost is low. Positioning members 2 are provided at both ends of the first support rod 11 and at the end of the second support rod 12 away from the first support rod 11. The four positioning members 2 are positioned around the workpiece body 3 to ensure the stability of the workpiece body 3 after installation, thereby improving the reliability of the processing process.

[0024] Reference Figure 2 As shown, the positioning member 2 includes a positioning seat 21 and a positioning bolt 22 threadedly connected to the positioning seat 21. The heads of the positioning bolts 22 are all oriented toward the center of the first support rod 11. A tightening protrusion 221 is provided at the end of the positioning bolt 22 away from the head, and the tightening protrusion 221 is provided with an arc-shaped tightening surface. By screwing the positioning bolt 22, the tightening protrusion 221 is driven to abut against the workpiece body 3 to play a positioning role. After all the positioning bolts 22 of multiple groups of positioning members 2 are tightened, the clamping process can be completed on the inner circumference of the workpiece body 3, making it convenient to process the outer circumference or end face of the workpiece body 3. In this embodiment, the positioning bolts 22 are selected as hexagon socket bolts, which makes the tightening process more labor-saving. Moreover, since the matching wrench for the hexagon socket bolt is small in size, it is convenient to use in a relatively narrow installation space.

[0025] Furthermore, the positioning seat 21 is slidably mounted within the first support rod 11 or the second support rod 12. A plurality of through-holes 13 are defined in each of the first support rod 11 and the second support rod 12. A connecting bolt 131 is inserted through one of the through-holes 13. The positioning seat 21 is provided with a threaded hole for inserting the connecting bolt 131. By sliding the positioning seat 21 to different positions and securing the sliding positioning seat 21 with the connecting bolt 131, the positioning member 2 as a whole can be positioned in different positions, thereby adapting to a wider range of workpiece bodies 3 with different diameters.

[0026] Furthermore, scale lines 14 are provided on both the first support rod 11 and the second support rod 12. For workpiece bodies 3 of different diameters, after fixing the positioning seat 21 to the specified position, the positioning bolt 22 is turned to change the position of the tightening protrusion 221. By observing the reading of the scale line 14, the tightening protrusion 221 is adjusted to the specified position so that the distance between the two relative tightening protrusions 221 is close to the inner diameter of the workpiece body 3. When clamping, it is only necessary to tighten the positioning bolt 22 a small number of turns to make the positioning bolt 22 tighten against the inner wall of the workpiece body 3, making the assembly process more convenient and quick.

[0027] Reference Figure 2 、 Figure 3 As shown, both ends of the first support rod 11 and the bottom of the second support rod 12 away from the end of the first support rod 11 are provided with assembly holes 16, and an assembly notch 17 is provided on one side of the assembly hole 16 to facilitate the overall installation of the cross-shaped bracket 1 on the corresponding assembly base 4 of the machine tool for cutting or drilling operations; an assembly block 15 is provided at the bottom of the first support rod 11, and a threaded hole is provided on the bottom surface of the assembly block 15 to facilitate the fixing of the cross-shaped bracket 1 to the corresponding workbench for deburring and polishing operations.

[0028] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A circular workpiece clamping fixture, characterized in that: The invention comprises a cross-shaped bracket (1), wherein the cross-shaped bracket (1) comprises a first support rod (11) and two second support rods (12), wherein the two second support rods (12) are respectively arranged on both sides of the middle part of the first support rod (11), and positioning members (2) are arranged at both ends of the first support rod (11) and at one end of the second support rod (12) away from the first support rod (11), wherein the positioning members (2) comprise a positioning seat (21) and a positioning bolt (22) threadedly connected in the positioning seat (21), wherein the head of the positioning bolt (22) faces the center position of the first support rod (11), and a tightening protrusion (221) is arranged at one end of the positioning bolt (22) away from the head, and an arc-shaped tightening surface is arranged on the tightening protrusion (221).

2. The annular workpiece clamping fixture according to claim 1 is characterized in that: The first support rod (11) and the second support rod (12) are both channel steels.

3. The annular workpiece clamping fixture according to claim 2 is characterized in that: The positioning seat (21) is slidably arranged in the first support rod (11) or the second support rod (12); the first support rod (11) and the second support rod (12) are both provided with a plurality of through holes (13); a connecting bolt (131) is arranged in one of the through holes (13); and the positioning seat (21) is provided with a threaded hole for inserting the connecting bolt (131).

4. The annular workpiece clamping fixture according to claim 1 or 2, characterized in that: The first support rod (11) and the second support rod (12) are both provided with scale marks (14).

5. The annular workpiece clamping fixture according to claim 1 is characterized in that: The positioning bolt (22) is a hexagon socket bolt.

6. The annular workpiece clamping fixture according to claim 1, characterized in that: The bottom of the first support rod (11) is provided with an assembly block (15), and the bottom surface of the assembly block (15) is provided with a threaded hole.

7. The annular workpiece clamping fixture according to claim 1 is characterized in that: Both ends of the first support rod (11) and the bottom of the second support rod (12) away from the first support rod (11) are provided with assembly holes (16), and one side of the assembly hole (16) is provided with an assembly notch (17).

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