CN217833233U - Tool for grinding shape of splayed hole workpiece - Google Patents

Abstract

The utility model provides a tool for grinding the shape of a figure-eight hole workpiece, which includes a mandrel inserted in the through hole of the workpiece, and the axial ends of the mandrel are installed correspondingly to the top of the machine tool; the front elastic sleeve is sleeved on the mandrel And tightly connected with the inner hole at one end of the workpiece; the rear elastic sleeve is sleeved on the other end of the mandrel and tightly connected with the inner hole at the other end of the workpiece; the locking piece is sleeved at the end of the mandrel close to the rear elastic sleeve On the outside of the workpiece, the locking member pushes toward the inside of the workpiece and compresses and supports the rear elastic sleeve and the front elastic sleeve between the mandrel and the inner wall of the workpiece. The utility model adopts the mandrel, the front elastic sleeve, the rear elastic sleeve and the locking piece to achieve the fastening effect between the mandrel and the workpiece, which can effectively avoid the error caused by multiple positioning, and is more suitable for the figure-eight shape. artifact.

Description

Tooling for Grinding Outer Shape of Workpiece with Eight-shaped Hole

technical field

The utility model relates to the field of grinding, in particular to the field of grinding workpieces with eight-character holes, in particular to a tool for grinding the shape of workpieces with eight-character holes.

Background technique

Now we are aiming at the figure-eight workpiece with special shape. As shown in attached drawing 3, the workpiece is not only symmetrical in appearance and inner wall structure, but also has arc-shaped upper and lower ends, and straight-line shape on the left and right sides. , in grinding process, need to use two equipments, one equipment uses the way of swinging to process the arc of the upper and lower ends, and the other equipment processes the plane structure of the left and right sides, so it will encounter To reverse the direction of the workpiece and replace the equipment, therefore, in order to correspond to the precision characteristics of the eight-character workpiece and the characteristics of the special structure, it is necessary to configure a set of tooling that can be fixedly supported and accurately positioned.

Contents of the invention

In view of the shortcomings of the prior art described above, the purpose of this utility model is to provide a tool for grinding the shape of a figure-eight hole workpiece, which is used to solve the difficulties of the prior art.

In order to achieve the above purpose and other related purposes, the utility model provides a tool for grinding the shape of a figure-eight hole workpiece, including:

A mandrel 1, the mandrel 1 is inserted into the through hole of the workpiece 2, and the axial ends of the mandrel 1 are installed correspondingly to the top of the machine tool;

A front elastic sleeve 3, the front elastic sleeve 3 is sleeved on the mandrel 1 and tightly connected with the inner hole at one end of the workpiece 2;

A rear elastic sleeve 4, which is sleeved on the other end of the mandrel 1 and tightly connected to the inner hole at the other end of the workpiece 2;

Locking part 5, said locking part 5 is sleeved on one end of mandrel 1 close to rear elastic sleeve 4, located on the outside of workpiece 2, said locking part 5 pushes toward the inside of workpiece 2 and pushes back elastic sleeve 4 And the front elastic sleeve 3 is compressed and supported between the mandrel 1 and the inner wall of the workpiece 2 .

According to a preferred solution, the mandrel 1 is provided with a pair, corresponding to the structure of the eight-character hole inside the workpiece 2 .

According to the preferred solution, the mandrel 1 is integrally provided with a left end shaft 101, a left taper shaft 102, a central shaft 103, a right taper shaft 104, a locking shaft 105 and a right end shaft 106 from left to right;

The left outer diameter of the left taper shaft 102 and the right taper shaft 104 is larger than the right outer diameter;

The right outer diameter of the left taper shaft 102 is the same as the left outer diameter of the right taper shaft 104 and the same as the outer diameter of the central shaft 103 .

According to a preferred solution, an alignment shaft 107 is integrally provided between the left end shaft 101 and the left taper shaft 102 , and the outer diameter of the alignment shaft 107 is the same as the left side outer diameter of the left taper shaft 102 .

According to a preferred solution, the front elastic sleeve 3 includes a ring-shaped elastic structure surrounded by S-shaped edges that can be stretched or compressed, and a gap 6 is provided between the S-shaped edges. The inner diameter of the left side of the front elastic sleeve 3 is larger than the inner diameter of the right side. A step 7 extending outward is provided on the left side of the front elastic sleeve 3 .

According to a preferred solution, the rear elastic sleeve 4 includes a ring-shaped elastic structure surrounded by S-shaped edges that can be stretched or compressed. A gap 6 is provided between the S-shaped edges. The left inner diameter of the front elastic sleeve 3 is larger than the right inner diameter.

According to a preferred solution, the sides where the front elastic sleeve 3 and the rear elastic sleeve 4 are close to each other have a planar structure.

According to the preferred solution, a pair of parallel left ring grooves 8 and right ring grooves 9 are provided on the circumference of the front elastic sleeve 3 and the rear elastic sleeve 4, and the bottom of the left ring groove 8 and the right ring groove 9 are aligned with the S-shaped side. The sides are parallel.

According to a preferred solution, the S-shaped sides of the front elastic sleeve 3 and the rear elastic sleeve 4 are arranged in eight groups at equal intervals in an annular array.

According to a preferred solution, both the front elastic sleeve 3 and the rear elastic sleeve 4 are made of elastic rigid material.

According to a preferred solution, the locking shaft 105 is provided with external threads in the axial direction, and the corresponding locking member 5 is installed on the locking shaft 105 through bolts, and the locking member 5 is installed with bolts perpendicular to the mandrel 1 from the outside to the inside. Tighten.

According to a preferred solution, the locking member 5 adopts a nut.

According to a preferred solution, four groups of bolts are arranged in an annular array.

The utility model adopts the mandrel, the front elastic sleeve, the rear elastic sleeve and the locking piece to achieve the fastening effect between the mandrel and the workpiece, which can effectively avoid the error caused by multiple positioning, and is more suitable for the figure-eight shape. artifact.

The best embodiments of the utility model will be described in more detail below with reference to the accompanying drawings, so that the features and advantages of the utility model can be easily understood.

Description of drawings

Fig. 1 is shown as the structural representation of the utility model;

Fig. 2 shows the left side view of the utility model;

Fig. 3 is shown as the schematic diagram about workpiece in the utility model;

Fig. 4 is shown as the front enlarged schematic diagram about the mandrel in the utility model;

Fig. 5 is shown as the enlarged schematic diagram of the front view of the front elastic sleeve in the utility model;

Figure 6 shows an enlarged schematic view of the internal structure of the front elastic sleeve in the utility model;

Fig. 7 is shown as the enlarged schematic diagram of the front view of the rear elastic sleeve in the utility model;

Figure 8 shows an enlarged schematic view of the internal structure of the rear elastic sleeve in the utility model;

Label description

1, mandrel, 101, left end shaft, 102, left taper shaft, 103, central shaft, 104, right taper shaft, 105, locking shaft, 106, right end shaft, 107, alignment shaft;

2. Work piece; 3. Front elastic sleeve; 4. Rear elastic sleeve; 5. Locking piece; 6. Gap; 7. Step; 8. Left ring groove; 9. Right ring groove.

Detailed ways

In order to make the purpose, technical solution and advantages of the technical solution of the present utility model clearer, the technical solution of the embodiment of the utility model will be clearly and completely described below in conjunction with the accompanying drawings of specific embodiments of the utility model. The same reference numerals in the figures represent the same parts. It should be noted that the described embodiments are some of the embodiments of the present invention, but not all of them. Based on the described embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

Possible embodiments within the scope of protection of the invention may have fewer parts, have other parts not shown in the drawings, different parts, differently arranged parts or differently connected parts than the embodiment shown in the figures. parts etc. Furthermore, two or more components in a drawing may be realized in a single component, or a single component shown in a drawing may be realized as a plurality of separate components.

Unless otherwise defined, the technical terms or scientific terms used herein shall have the usual meanings understood by those skilled in the art to which the present invention belongs. "First", "second" and similar words used in the utility model patent application specification and claims do not indicate any order, quantity or importance, but are only used to distinguish different components. Likewise, "a" or "a" and the like do not necessarily imply a numerical limitation. "Comprising" or "comprising" and similar words mean that the elements or items appearing before the word include the elements or items listed after the word and their equivalents, without excluding other elements or items. Words such as "connected" or "connected" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "Down", "Left", "Right" and so on are only used to indicate the relative positional relationship. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

The utility model proposes a tooling for grinding the shape of a figure-eight hole workpiece, which is used in the grinding process. The structure of the utility model is especially suitable for a figure-eight-shaped workpiece that is symmetrical from top to bottom, left, right, inside and outside.

In general, the utility model proposed tooling for grinding the shape of a figure-eight hole workpiece mainly includes a mandrel 1 , a front elastic sleeve 3 , a rear elastic sleeve 4 and a locking member 5 . Wherein, refer to FIG. 1 , which shows the arrangement relationship of the mandrel 1 , the front elastic sleeve 3 , the rear elastic sleeve 4 and the locking member 5 .

Since the figure-eight workpiece is also formed into a figure-eight hole, for this reason, a pair of mandrels 1 are provided in the tooling to be inserted into the figure-eight hole, and the two axial ends of the mandrel 1 are installed correspondingly to the top of the machine tool, which can be easily installed on the machine tool. Because the installation is simple and the structure of the mandrel is simple, it can effectively avoid errors caused by multiple positioning, and is more suitable for eight-shaped workpieces;

Further, by installing the front elastic sleeve 3 and the rear elastic sleeve 4 respectively on the left and right ends of the axial direction of the mandrel 1, since the front elastic sleeve 3 and the rear elastic sleeve 4 are formed of elastic structures, they can be stretched or compressed, and when the sleeve The locking member 5 arranged on the end of the mandrel 1 close to the rear elastic sleeve 4 is continuously rotated and locked, extruding the front elastic sleeve 3 and the rear elastic sleeve 4, while the mandrel 1 continuously squeezes the front elastic sleeve 3 and the rear elastic sleeve 4. The front elastic sleeve 3 and the rear elastic sleeve 4 are continuously squeezed around until they are installed in interference with the inner wall of the figure-eight workpiece, and then screwed in and fixed by bolts arranged in an annular array around the locking member 5, preferably , the locking part 5 adopts nuts, which is convenient for procurement and effectively reduces costs, but can ensure the stability and fastening of the tooling.

As mentioned above, the front elastic sleeve 3 and the rear elastic sleeve 4 can be firmly sleeved on the mandrel 1. For this reason, corresponding to the eight-shaped workpiece 2, the mandrel 1 is arranged to be integrally arranged from left to right with a left end shaft. 101, the structure of the left taper shaft 102, the central shaft 103, the right taper shaft 104, the locking shaft 105 and the right end shaft 106, wherein the left end shaft 101 and the right end shaft 106 have the smallest outer diameters, which are used to penetrate into the workpiece 2, and are also compatible with The alignment structure of rack installation; further, in order to be able to block the front elastic sleeve 3 and the rear elastic sleeve 4, the left outer diameter of the left taper shaft 102 and the right taper shaft 104 is set to be larger than the structure of the right outer diameter, A taper is formed. In addition, the right outer diameter of the left tapered shaft 102 is the same as the left outer diameter of the right tapered shaft 104, and the same as the outer diameter of the central shaft 103, which is used for intermediate transitional support.

It needs to be specifically explained that the front elastic sleeve 3 and the rear elastic sleeve 4 are respectively installed with the left taper shaft 102 and the right taper shaft 104, wherein the front elastic sleeve 3 and the rear elastic sleeve 4 are all arranged as an elastic ring surrounded by an S-shaped edge. The structure can be stretched or compressed. The inner diameter of the left side is larger than the inner diameter of the right side. There is a gap 6 between the multiple S-shaped sides. Using this gap 6, when the internal pressure is generated, the front elastic sleeve 3 can be realized. and the purpose of stretching the rear elastic sleeve 4, and when the support force in the center is canceled, the front elastic sleeve 3 and the rear elastic sleeve 4 can shrink inwardly and return to the original state; in this embodiment, in order to correspond to the eight-shaped workpiece 2 The overlapping structure of the middle part, preferably the side where the front elastic sleeve 3 and the rear elastic sleeve 4 are close to each other is a plane structure, which can also avoid the relative rotation between the two during use, and achieve a set of fixed structures .

Preferably on this basis, the axial direction of the locking shaft 105 is provided with external threads, the corresponding locking member 5 is installed on the locking shaft 105 by bolts, and the locking member 5 is installed with a thread perpendicular to the mandrel from the outside to the inside. 1 bolts are tightened, in order to prevent excessive locking of the locking member 5, a step 7 extending outward is provided on the left side of the front elastic sleeve 3, and the left side of the workpiece 2 is set on the step 7. It can facilitate the pushing and locking of the locking member 5 toward the left side of the workpiece 2 .

Preferably on this basis, an alignment shaft 107 is integrally provided between the left end shaft 101 and the left taper shaft 102, and the outer diameter of the alignment shaft 107 is the same as the left side outer diameter of the left taper shaft 102, and the alignment shaft 107 is set It is to achieve the accuracy of making the left taper shaft 102 and the right taper shaft 104 with tapers on the mandrel 1. Only the accuracy of the mandrel 1 can be the best precision for the production of the workpiece 2.

As shown in Figures 5, 6, 7 and 8, the preferred S-shaped sides of the front elastic sleeve 3 and the rear elastic sleeve 4 are arranged in eight groups at equal intervals in an annular array, and the circumferential direction of the front elastic sleeve 3 and the rear elastic sleeve 4 is arranged There is a pair of parallel left ring grooves 8 and right ring grooves 9, the bottom of the left ring grooves 8 and the right ring grooves 9 are parallel to the sides of the S-shaped side, and the S-shaped side extends upwards to the left ring groove 8 and the right The length of the straight line at the bottom of the ring groove 9 is the same, which can effectively ensure that the pressure exerted by the front elastic sleeve 3 and the rear elastic sleeve 4 is the same in the circumferential direction, and also ensures the accuracy of grinding in the later stage, which is the guarantee for the workpiece to meet the symmetrical requirements .

The above-mentioned embodiments only illustrate the principles and effects of the present utility model, but are not intended to limit the present utility model. Anyone familiar with this technology can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or changes made by those with ordinary knowledge in the technical field without departing from the spirit and technical ideas disclosed in the utility model should still be covered by the claims of the utility model.

Claims (8)

1. A tool for grinding profile of a figure-eight hole workpiece, characterized in that it comprises: A mandrel (1), the mandrel (1) is inserted in the through hole of the workpiece (2), and the axial ends of the mandrel (1) are installed correspondingly to the top of the machine tool; a front elastic sleeve (3), the front elastic sleeve (3) is sleeved on the mandrel (1) and tightly connected with the inner hole at one end of the workpiece (2); a rear elastic sleeve (4), the rear elastic sleeve (4) is sleeved on the other end of the mandrel (1) and tightly connected to the inner hole at the other end of the workpiece (2); A locking piece (5), the locking piece (5) is sleeved on the end of the mandrel (1) close to the rear elastic sleeve (4), and is located on the outside of the workpiece (2), the locking piece (5) Pushing toward the inside of the workpiece (2) and compressing and supporting the rear elastic sleeve (4) and the front elastic sleeve (3) between the mandrel (1) and the inner wall of the workpiece (2). 2. The tooling for grinding the shape of a figure-shaped hole workpiece according to claim 1, characterized in that, the mandrel (1) is integrally provided with a left end shaft (101), a left taper shaft (102), Central shaft (103), right taper shaft (104), locking shaft (105) and right end shaft (106); The left outer diameter of the left taper shaft (102) and the right taper shaft (104) is larger than the right outer diameter; The right outer diameter of the left taper shaft (102) is the same as the left outer diameter of the right taper shaft (104), and the same as the outer diameter of the central shaft (103). 3. The tooling for grinding profile of a figure-eight hole workpiece according to claim 2, characterized in that an alignment shaft (107) is integrally arranged between the left end shaft (101) and the left taper shaft (102), so that The outer diameter of the alignment shaft (107) is the same as the left outer diameter of the left taper shaft (102). 4. The tooling for grinding the shape of a character-shaped hole workpiece according to claim 3, characterized in that, the front elastic sleeve (3) includes an elastic structure surrounded by an S-shaped edge that can be stretched or compressed, and the S-shaped edge There is a gap (6) between them, the inner diameter on the left side of the front elastic sleeve (3) is larger than the inner diameter on the right side, and a step (7) extending outward is provided on the left side of the front elastic sleeve (3). 5. The tooling for grinding the shape of a character-shaped hole workpiece according to claim 4, characterized in that, the rear elastic sleeve (4) includes an elastic structure surrounded by an S-shaped edge that can be stretched or compressed, and the S-shaped edge A gap (6) is provided between them, and the left inner diameter of the front elastic sleeve (3) is larger than the right inner diameter. 6. The tooling for grinding profile of a figure-eight hole workpiece according to claim 5, characterized in that, the sides of the front elastic sleeve (3) and the rear elastic sleeve (4) that are close to each other are in a planar structure. 7. The tool according to claim 6, characterized in that a pair of parallel left ring grooves (8 ) and the right annular groove (9), the bottom of the left annular groove (8) and the right annular groove (9) are parallel to the side of the S-shaped side. 8. The tooling for grinding profile of a figure-shaped hole workpiece according to claim 7, characterized in that, the axial direction of the locking shaft (105) is provided with an external thread, and the corresponding locking member (5) is installed on the On the locking shaft (105), and the bolts perpendicular to the mandrel (1) are installed from outside to inside on the lock piece (5) and tightened.

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