Cylindrical gear inner hole grinding clamp

Abstract

The utility model relates to the technical field of gear inner hole machining, and discloses a cylindrical gear inner hole grinding clamp which comprises a clamp body and a wrench, a first hexagon socket head cap screw is arranged at the upper end of the left side of the inner wall of the clamp body, and the outer wall of the first hexagon socket head cap screw is in threaded connection with a hexagon nut on the left side of the clamp body. The clamp body and the wrench are arranged, the thread sleeve on the clamp body is adjusted through the wrench, the forming range of the clamping jaw body can be freely adjusted, gear inner hole machining of different outer diameter sizes is achieved, the clamping force of the clamping jaw body is achieved through the inward concave portion of the elastic disc, and the clamping jaw body is fixed to the elastic disc; the clamping jaw body clamps a tool through the gear pitch circle positioning retainer, the retainer makes contact with the tooth pitch circle of each gear of a cylindrical bevel gear, the gears can be rapidly and accurately positioned on the tool through the clamping effect of the clamping jaw body, the positioning precision is improved, and meanwhile the workpiece clamping time is effectively saved.

Description

Technical Field

[0001] The utility model relates to the technical field of gear inner hole machining, in particular to a cylindrical gear grinding inner hole fixture. Background Technique

[0002] The process of obtaining the specific structure and precision of gears by mechanical methods. Gears are the core transmission components in the movement of automobiles. The quality of their machining has a direct impact on the vibration noise and reliability of the automobile assembly and even the whole vehicle, and sometimes it becomes the key factor restricting the improvement of product level. During the machining process of gears, drilling is required.

[0003] In the past, when grinding the inner hole of a cylindrical helical gear, a four-jaw chuck and appropriately thick and thin rolling needles were used to position the cylindrical gear. The rolling needles were first placed in the tooth grooves of the cylindrical gear. The rolling needles were placed in 4 equally divided tooth grooves and corresponded to the positions of the four jaws of the four-jaw chuck. After the jaws were slightly clamped, the outer circle and the end face were corrected with a dial indicator. After alignment, the jaws were clamped again. This method not only has low working efficiency but also unstable accuracy.

[0004] Therefore, we propose a cylindrical gear grinding inner hole fixture. Content of the Utility Model

[0005] The utility model mainly solves the technical problems existing in the above-mentioned prior art, and provides a cylindrical gear grinding inner hole fixture.

[0006] To achieve the above purpose, the utility model adopts the following technical scheme. A cylindrical gear grinding inner hole fixture includes a fixture body and a wrench. A first hexagon socket head cap screw is arranged at the upper left end of the inner wall of the fixture body. A hexagon nut is threadedly connected to the outer wall of the first hexagon socket head cap screw on the left side of the fixture body. A stop block is arranged on the left side of the outer wall of the fixture body through the hexagon nut. A second hexagon socket head cap screw is arranged at the position of the stop block inside the fixture body. A jaw body is arranged at the top of the fixture body. A cage is arranged on the right side of the jaw body inside the inner wall of the fixture body. A third hexagon socket head cap screw is arranged at the lower end of the cage inside the inner wall of the fixture body. A jaw seat is arranged inside the inner wall of the fixture body through the third hexagon socket head cap screw. A fourth hexagon socket head cap screw is arranged in the middle of the inner wall of the fixture body. A positioning disk is arranged inside the inner wall of the fixture body through the fourth hexagon socket head cap screw. A support pin is arranged at the lower end of the fourth hexagon socket head cap screw inside the inner wall of the fixture body.

[0007] Preferably, an O-shaped rubber sealing ring is arranged at the upper end of the outer wall of the support pin, and a screw sleeve is arranged on the right side of the support pin inside the inner wall of the fixture body.

[0008] Preferably, an elastic disk is arranged at the upper end of the screw sleeve inside the inner wall of the fixture body.

[0009] Preferably, a T-shaped nut is threadedly connected to the outer wall of the second socket head cap screw.

[0010] Preferably, a fifth socket head cap screw is provided on the inner wall of the fixture body.

[0011] Preferably, a mounting plate is provided on the inner wall of the fixture body by means of a fifth socket head cap screw.

[0012] Preferably, a cylindrical pin is provided at the lower end of the third socket head cap screw inside the fixture body.

[0013] Preferably, a sixth socket head cap screw is provided on the left side of the lower end of the inner wall of the fixture body.

[0014] Preferably, a support pin is provided at the lower end of the fourth socket head cap screw inside the fixture body.

[0015] The utility model provides a cylindrical gear grinding inner hole fixture, which has the following beneficial effects: the cylindrical gear grinding inner hole fixture can freely adjust the forming range of the jaw body by adjusting the screw sleeve on the fixture body through a wrench. It can realize the machining of the inner holes of gears with different outer diameter sizes. The clamping force of the jaw body is realized by the inner concavity of the elastic disk. The jaw body is fixed on the elastic disk, and the jaw body clamps the tooling through a kind of gear pitch circle positioning cage. The cage contacts the pitch circle of each tooth part of the cylindrical helical gear. By using the clamping action of the jaw body, the gear can be quickly and accurately positioned on the tooling, improving the positioning accuracy and effectively saving the clamping time of the workpiece. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a cross-sectional view of the overall internal structure of the utility model;

[0017] Figure 2 is a schematic structural diagram of the wrench of the utility model;

[0018] Figure 3 is a schematic structural diagram of the top of the utility model.

[0019] Legend: 1, first socket head cap screw; 2, hexagon nut; 3, block; 4, second socket head cap screw; 5, jaw body; 6, cage; 7, third socket head cap screw; 8, jaw seat; 9, positioning disk; 10, fourth socket head cap screw; 11, O-shaped rubber sealing ring; 12, screw sleeve; 13, elastic disk; 14, T-shaped nut; 16, mounting plate; 17, fifth socket head cap screw; 18, cylindrical pin; 19, sixth socket head cap screw; 20, support pin; 21, fixture body; 22, wrench. Detailed implementation manners

[0020] In order to more clearly illustrate the implementation manners of the present utility model or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the implementation manners or the prior art. Obviously, the drawings described below are only exemplary. For those of ordinary skill in the art, without creative efforts, other implementation drawings can also be obtained based on the provided drawings.

[0021] The structures, ratios, sizes, etc. shown in this specification are only used to cooperate with the content disclosed in the specification for those familiar with this technology to understand and read, and are not used to limit the limited conditions under which the present utility model can be implemented. Therefore, they do not have technical essence. Any modification of the structure, change of the proportional relationship or adjustment of the size, without affecting the effects that the present utility model can produce and the purposes that can be achieved, should still fall within the scope covered by the technical content disclosed by the present utility model.

[0022] It should be noted that: similar reference numerals and letters represent similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0023] In the description of the embodiments of the present utility model, it should be noted that the orientation or positional relationship indicated by terms such as "center", "upper", "lower", "inner", "outer", "side", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the utility model product is usually placed during use. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present utility model. In addition, terms such as "first", "second", etc. are only used for distinguishing descriptions and cannot be understood as indicating or implying relative importance.

[0024] In the description of the embodiments of the present utility model, it should also be noted that unless otherwise clearly specified and limited, the terms "set", "installed", "connected", "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present utility model can be understood according to specific situations.

[0025] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0026] Embodiment 1: A cylindrical gear grinding inner hole fixture, as shown in Figure 1 hexagon socket head cap screw - Figure 3 stop block, includes a fixture body 21 and a wrench 22. A first hexagon socket head cap screw 1 is provided at the upper end of the left side of the inner wall of the fixture body 21. A hexagon nut 2 is threadedly connected to the outer wall of the first hexagon socket head cap screw 1 on the left side of the fixture body 21. A stop block 3 is provided on the left side of the outer wall of the fixture body 21 through the hexagon nut 2. A second hexagon socket head cap screw 4 is provided inside the fixture body 21 at the position of the stop block 3. A jaw body 5 is provided at the top of the fixture body 21. A cage 6 is provided on the right side of the inner wall of the fixture body 21 at the position of the jaw body 5. A third hexagon socket head cap screw 7 is provided at the lower end of the inner wall of the fixture body 21 at the position of the cage 6. By providing the fixture body 21 and the wrench 22, the adjusting sleeve 12 on the fixture body 21 can be adjusted through the wrench 22, and the forming range of the jaw body 5 can be freely adjusted to realize the machining of the inner holes of gears with different outer diameter sizes. The clamping force of the jaw body 5 is realized by the concavity of the elastic disk 13. The jaw body 5 is fixed on the elastic disk 13. The jaw body 5 clamps the work-piece through a kind of gear pitch circle positioning cage 6. The cage 6 contacts the pitch circle of each tooth part of the cylindrical helical gear. By using the clamping action of the jaw body 5, the gear can be quickly and accurately positioned on the work-piece, improving the positioning accuracy and effectively saving the clamping time of the work-piece at the same time.

[0027] Embodiment 2: On the basis of Embodiment 1, as shown in Figure 1 hexagon socket head cap screw - Figure 3 stop block, a jaw seat 8 is provided on the inner wall of the fixture body 21 through the third hexagon socket head cap screw 7. A fourth hexagon socket head cap screw 10 is provided in the middle of the inner wall of the fixture body 21. A positioning disk 9 is provided on the inner wall of the fixture body 21 through the fourth hexagon socket head cap screw 10. A support pin 20 is provided at the lower end of the inner wall of the fixture body 21 at the position of the fourth hexagon socket head cap screw 10. An O-shaped rubber sealing ring 11 is provided at the upper end of the outer wall of the support pin 20. A sleeve 12 is provided on the right side of the inner wall of the fixture body 21 at the position of the support pin 20. An elastic disk 13 is provided at the upper end of the inner wall of the fixture body 21 at the position of the sleeve 12. A T-shaped nut 14 is threadedly connected to the outer wall of the second hexagon socket head cap screw 4.

[0028] Embodiment 3: On the basis of Embodiment 1 and Embodiment 2, as shown in the First Hexagon Socket Head Cap Screw 1 - the Stop Block 3, a Fifth Hexagon Socket Head Cap Screw 17 is arranged on the inner wall of the fixture body 21, and a mounting plate 16 is arranged on the inner wall of the fixture body 21 through the Fifth Hexagon Socket Head Cap Screw 17. A cylindrical pin 18 is arranged at the lower end of the Third Hexagon Socket Head Cap Screw 7 inside the fixture body 21. A Sixth Hexagon Socket Head Cap Screw 19 is arranged on the left side of the lower end of the inner wall of the fixture body 21. A support pin 20 is arranged at the lower end of the Fourth Hexagon Socket Head Cap Screw 10 inside the fixture body 21.

[0029] The working principle of the present utility model: The workpiece is axially limited by being fixed on the fixture body 21. A cage 6 in the form of cylindrical needle rollers with the same number of teeth as the gear is loaded into the tooth groove of the workpiece. The cage 6 is clamped inward by 6 jaw bodies 5. The 6 jaw bodies 5 are fixed on the elastic disk 13 with screws. The elastic disk 13 ensures the clamping force of the jaw bodies 5 by appropriately adjusting the front - rear distance of the adjusting sleeve 12 with a wrench 22. After one adjustment, the workpiece can be clamped and loosened by appropriately adjusting the adjusting sleeve 12.

[0030] The above shows and describes the basic principles, main features and advantages of the present utility model. Those skilled in the art should understand that the present utility model is not limited by the above - mentioned embodiments. What is described in the above - mentioned embodiments and the specification only illustrates the principle of the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and these changes and improvements all fall within the scope of the present utility model claimed. The scope of protection claimed by the present utility model is defined by the appended claims and their equivalents.

Claims

1. A cylindrical gear grinding inner hole fixture, comprising a fixture body (21) and a wrench (22), characterized in that: On the upper left end of the inner wall of the fixture body (21), a first hexagon socket head cap screw (1) is provided. On the outer wall of the first hexagon socket head cap screw (1) and on the left side of the fixture body (21), a hexagon nut (2) is threadedly connected. On the outer wall of the fixture body (21) and on the left side, a stop block (3) is provided through the hexagon nut (2). Inside the fixture body (21) and at the position of the stop block (3), a second hexagon socket head cap screw (4) is provided. On the top of the fixture body (21), a jaw body (5) is provided. On the inner wall of the fixture body (21) and on the right side of the jaw body (5), a cage (6) is provided. On the inner wall of the fixture body (21) and at the lower end of the cage (6), a third hexagon socket head cap screw (7) is provided. On the inner wall of the fixture body (21) and through the third hexagon socket head cap screw (7), a jaw seat (8) is provided. In the middle of the inner wall of the fixture body (21), a fourth hexagon socket head cap screw (10) is provided. On the inner wall of the fixture body (21) and through the fourth hexagon socket head cap screw (10), a positioning disc (9) is provided. On the inner wall of the fixture body (21) and at the lower end of the fourth hexagon socket head cap screw (10), a support pin (20) is provided.

2. The cylindrical gear internal hole fixture according to claim 1, characterized in that: On the upper end of the outer wall of the support pin (20), an O-ring rubber seal (11) is provided. On the inner wall of the fixture body (21) and on the right side of the support pin (20), a screw sleeve (12) is provided.

3. The cylindrical gear grinding inner hole fixture according to claim 1, characterized in that: On the upper end of the inner wall of the fixture body (21) and at the position of the screw sleeve (12), an elastic disc (13) is provided.

4. The internal hole fixture for cylindrical gear grinding according to claim 1, wherein: On the outer wall of the second hexagon socket head cap screw (4), a T-nut (14) is threadedly connected.

5. The cylindrical gear grinding inner hole fixture according to claim 1, characterized in that: On the inner wall of the fixture body (21), a fifth hexagon socket head cap screw (17) is provided.

6. The cylindrical gear inner hole fixture according to claim 1, characterized in that: On the inner wall of the fixture body (21) and through the fifth hexagon socket head cap screw (17), a mounting plate (16) is provided.

7. The cylindrical gear grinding inner hole fixture according to claim 1, characterized in that: Inside the fixture body (21) and at the lower end of the third hexagon socket head cap screw (7), a cylindrical pin (18) is provided.

8. The cylindrical gear grinding inner hole fixture according to claim 1, characterized in that: On the lower left end of the inner wall of the fixture body (21), a sixth hexagon socket head cap screw (19) is provided.

9. The cylindrical gear grinding inner hole fixture according to claim 1, wherein: Inside the fixture body (21) and at the lower end of the fourth hexagon socket head cap screw (10), a support pin (20) is provided.

Images