Auxiliary tool for detecting transmission precision of hole speed reducer

Abstract

The utility model discloses an auxiliary tool for detecting the transmission precision of a hole reducer. The auxiliary tool comprises a tensioning sleeve, a tensioning screw and a connecting shaft, the front section of the tensioning sleeve is an expansion sleeve, and the rear section is a connecting sleeve; a step-shaped through hole is formed in the axis of the tensioning sleeve. And the tensioning screw is screwed into the tensioning sleeve, so that the expansion sleeve can expand outwards. The expansion sleeve can be inserted into the internal spline tip circle of the input end or the output end of the speed reducer. One section of the connecting shaft is of a sleeve structure, and the other section of the connecting shaft is of a coaxial rod-shaped structure and is used for being connected with the expansion sleeve and external detection equipment. By means of the design that the tensioning sleeve and the tensioning screw are connected with the top circle of the internal spline at the input end or the output end of the speed reducer in an embedded mode, the effect of stable connection between the tool and the speed reducer is guaranteed. Through the extension design of the adapter shaft, the space interference problem of the same-side input and output end detection equipment is effectively solved, and the installation space is provided.

Description

Technical Field

[0001] This utility model pertains to a testing auxiliary device, specifically an auxiliary tooling for testing the transmission accuracy of bore-type reducers. Background Technology

[0002] The machining industry is a fundamental sector and the cornerstone of modern manufacturing. Within the machining industry, gear reducer processing constitutes a significant portion. In modern manufacturing, the application of gear reducers is becoming increasingly widespread, while the requirements for manufacturing precision and other aspects are also rising, driving continuous updates and improvements in production processes. After assembly, gear reducers undergo various tests to assess relevant parameters and determine whether they meet design requirements.

[0003] When the input and output ends of the reducer are on the same side, spatial interference will occur with external detection devices such as motors, sensors, and loaders. Summary of the Invention

[0004] In view of this, the present invention provides an auxiliary tooling for detecting the transmission accuracy of bore reducers, which is a technical solution that can extend and connect the output end and the input end, and provides sufficient installation space for external testing equipment.

[0005] The technical solution adopted by this utility model is: an auxiliary tooling for detecting the transmission accuracy of a hole-type reducer, including a clamping mechanism and a connecting piece, characterized in that: the clamping mechanism includes a tensioning sleeve and a tensioning screw, and the connecting piece is an adapter shaft;

[0006] The front section of the tensioning sleeve is an expandable expansion sleeve, and the rear section is a cylindrical connecting sleeve. A stepped through hole is provided at the axial center of the tensioning sleeve, with the diameter of the through hole decreasing in a stepped manner from back to front, consisting of a mounting hole, a threaded hole, a transition hole, and an expansion hole. The threaded hole has an internal thread. The expansion hole connects to the transition hole via a tapered transition surface. The expansion sleeve has an elastic groove along its axial direction, and the outer wall of the expansion sleeve is smooth.

[0007] The tensioning screw includes a nut, a screw rod, a positioning section, and an expansion end; the diameter of the nut is smaller than the diameter of the mounting hole; the screw rod has an external thread that matches the screw hole; the positioning section is a smooth rod with a clearance fit to the transition hole; the expansion end has a conical head, and the taper of the expansion end matches the taper of the conical transition surface of the tensioning sleeve; the tensioning screw is screwed into the through hole of the tensioning sleeve, the screw rod is threadedly connected to the screw hole, and the conical head of the expansion end extends into the expansion hole along the conical transition surface, causing the expansion hole to expand outward due to the pressure of the conical head;

[0008] The expansion sleeve can be inserted into the top circle of the inner spline at the input or output end of the reducer; one end of the adapter shaft is a sleeve structure, and the other end is a coaxial rod structure. The sleeve structure of the adapter shaft is fixedly connected to the connecting sleeve of the tensioning sleeve, and the shaft of the adapter shaft is connected to external testing equipment through a coupling.

[0009] Furthermore, the adapter shaft is an integral structure, with the sleeve structure being the adapter sleeve and the rod structure being the shaft rod; the adapter sleeve is coaxially disposed at the end of the shaft rod; the adapter sleeve has a central blind hole, the inner diameter of which is adapted to the outer diameter of the connecting sleeve of the tensioning sleeve to form a clearance fit; the adapter sleeve and the connecting sleeve are mechanically locked together by a set screw.

[0010] Furthermore, the adapter shaft has a split structure, with a sleeve structure as the connecting sleeve and a rod-shaped structure as the connecting shaft; the connecting sleeve is a cylindrical component, with the upper end of the connecting sleeve inserted into the connecting sleeve to form a clearance fit, and the lower end of the connecting sleeve inserted into the upper end of the connecting shaft; the connecting sleeve is mechanically locked to the connecting sleeve and the connecting shaft respectively by set screws.

[0011] Furthermore, the outer wall of the sleeve is provided with two mutually locking planes, and the end of the set screw can fit into the locking plane.

[0012] Furthermore, the expansion sleeve has four axial elastic grooves evenly distributed along its circumference on its cylindrical wall.

[0013] Furthermore, the outer wall of the expansion sleeve is provided with a knurled surface or a wear-resistant coating.

[0014] Furthermore, a flange is fitted outside the sleeve structure of the adapter shaft, the flange is fixedly connected to the reducer, and the inner hole of the flange is loosely fitted with the sleeve structure of the connecting shaft.

[0015] The beneficial effects of this utility model are as follows: The embedded connection design of the tensioning sleeve and tensioning screw with the inner spline top circle of the input or output end of the reducer ensures a stable connection between the tooling and the reducer. The extended design of the adapter shaft effectively solves the problem of spatial interference between the input and output end detection equipment on the same side, providing more installation space.

[0016] In addition, the adapter shaft supports modular combination, allowing you to select the appropriate adapter shaft according to different installation conditions, thus reducing tooling customization costs. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model connected to the speed reducer;

[0018] Figure 2 This is a schematic diagram of the tensioning sleeve structure;

[0019] Figure 3 yes Figure 2 P-direction schematic diagram;

[0020] Figure 4 yes Figure 2 Sectional view at point MM;

[0021] Figure 5 This is a schematic diagram of the tensioning screw.

[0022] Figure 6 This is a schematic diagram of one embodiment of the adapter shaft;

[0023] Figure 7 This is a schematic diagram of another embodiment of the adapter shaft.

[0024] In the figure: 1. Tensioning sleeve, 101. Connecting sleeve, 102. Expansion sleeve, 103. Elastic groove, 104. Mounting hole, 105. Screw hole, 106. Transition hole, 107. Expansion hole, 108. Locking plane;

[0025] 2. Tensioning screw, 201. Nut, 202. Screw, 203. Positioning section, 204. Expansion end;

[0026] 3. Adapter sleeve, 4. Shaft, 5. Center blind hole, 6. Connecting sleeve, 7. Connecting shaft, 8. Set screw, 9. Flange, 10. Coupling, 11. Reducer. Detailed Implementation

[0027] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0028] like Figure 1 As shown, an auxiliary tooling for testing the transmission accuracy of a bore-type reducer includes a tensioning sleeve 1, a tensioning screw 2, and an adapter shaft. The tensioning sleeve 1 is inserted into the top circle of the inner spline at the input or output end of the reducer 11 to be tested. The tensioning screw 2 is screwed into the tensioning sleeve 1 to cause radial expansion, thereby eliminating the gap between the tensioning sleeve 1 and the input or output end. The adapter shaft connects the tensioning sleeve 1 to external testing equipment.

[0029] like Figures 2 to 4As shown, the tensioning sleeve 1 is an integrated structure consisting of a rear cylindrical connecting sleeve 101 and a front expandable expansion sleeve 102. The expansion sleeve 102 has four axial elastic grooves 103 evenly distributed along its circumference on its wall. The grooves 103 are parallel to the axis of the tensioning sleeve 1. A stepped through hole is provided at the axial center of the tensioning sleeve 1. From back to front, the through holes are: a mounting hole 104, a screw hole 105, a transition hole 106, and an expansion hole 107. The mounting hole 104 has the largest inlet diameter and is used to guide the insertion of the tensioning screw 2. The screw hole 105 has a smaller diameter than the mounting hole 104 and has an internal thread that matches the tensioning screw 2. The transition hole 106 has a diameter equal to the diameter of the thread tip circle of the screw hole 105, serving as a stable positioning guide. The expansion hole 107 has a smaller diameter than the transition hole 106 and connects to the transition hole 106 through a tapered transition surface.

[0030] like Figure 5 As shown, the tensioning screw 2 includes a nut 201, a screw 202, a positioning section 203, and an expansion end 204. The screw 202 has an external thread that matches the screw hole 105. The positioning section 203 is a smooth rod that has a clearance fit with the transition hole 106. The expansion end 204 has a conical head. The taper of the expansion end 204 matches the taper of the conical transition surface of the tensioning sleeve 1.

[0031] like Figure 1 As shown, during assembly, the tensioning sleeve 1 is inserted into the top circle of the inner spline at the input or output end of the reducer 11. At this time, the expansion hole 107 of the tensioning sleeve 1 maintains its original diameter. The tensioning screw 2 is screwed into the tensioning sleeve 1 through the mounting hole 104. The threaded rod of the tensioning screw 2 engages with the threaded hole 105 to provide axial thrust. The positioning section 203 enters the transition hole 106 to ensure that the axis of the tensioning screw 2 is aligned with that of the tensioning sleeve 1, avoiding misalignment. The front end of the tapered head of the expansion end 204 contacts the tapered transition surface and begins to enter the inlet of the expansion hole 107. As the tensioning screw 2 continues to be screwed in, the tapered head of the expansion end 204 penetrates deeper into the expansion hole 107 along the tapered transition surface. The inner wall of the expansion hole 107 is squeezed by the tapered head, forcing the expansion sleeve 102 with the elastic groove 103 to expand outward uniformly, increasing the width of the elastic groove 103. The axial clamping force of the tensioning screw 2 on the tensioning sleeve 1 is converted into radial clamping force through the conical surface fit, ultimately achieving high-strength fixation between the tensioning sleeve 1 and the input or output end of the reducer 11.

[0032] It should be noted that the expansion sleeve 102, which is rigidly fixed to the top circle of the internal spline at the input or output end of the reducer 11, has a smooth outer wall. For manufacturing considerations, a smooth surface is chosen for the tensioning sleeve 1, as it is simple to process, low in cost, and the friction between it and the inner wall of the workpiece after tensioning is sufficient to meet the transmission accuracy requirements during testing. If a further increase in friction is required, knurling or a wear-resistant coating can be applied to the outer wall of the expansion sleeve 102.

[0033] The connecting sleeve 101 of the tensioning sleeve 1, through its connection with the adapter shaft, enables the coaxial connection between the reducer 11 and the external detection device. One end of the adapter shaft is a sleeve structure, and the other end is a coaxial rod-like structure. The adapter shaft comes in two forms: an integral structure and a split structure. Both have the following specific structures:

[0034] Example 1

[0035] like Figure 6 As shown, the adapter shaft adopts an integrated structure, consisting of an adapter sleeve 3 and a shaft 4 coaxially connected. The adapter sleeve 3 corresponds to a sleeve structure, and the shaft 4 corresponds to a rod-like structure. The adapter sleeve 3 is located at the end of the shaft 4, with their axes coinciding. A central blind hole 5 is provided at the end of the adapter sleeve 3. The inner diameter of the central blind hole 5 matches the outer diameter of the connecting sleeve 101 of the tensioning sleeve 1, forming a clearance fit. A through threaded hole is radially provided on the wall of the adapter sleeve 3. After the adapter sleeve 3 and the connecting sleeve 101 of the tensioning sleeve 1 are fitted together, a set screw 8 is screwed into the threaded hole to mechanically lock the adapter sleeve 3 and the tensioning sleeve 1 together. The other end of the shaft 4 is the power transmission input end, connected to external testing equipment via a coupling 10 to achieve torque transmission.

[0036] It should be noted that at least two threaded holes are provided on the same circumference on the wall of the adapter sleeve 3, and the spacing between them is equal. To increase the mechanical locking capability, threaded holes are provided on two circumferences of the wall of the adapter sleeve 3.

[0037] Example 2

[0038] like Figure 7 As shown, the adapter shaft adopts a split structure, including a connecting sleeve 6 and a connecting shaft 7. The connecting sleeve 6 corresponds to the cylindrical component, and the connecting shaft 7 corresponds to the rod-shaped component. The upper end of the connecting sleeve 6 is fitted with the connecting sleeve 101 of the tensioning sleeve 1, forming a clearance fit. The lower end of the connecting sleeve 6 is fitted with the upper end of the connecting shaft 7. A through threaded hole is radially formed on the cylindrical wall of the connecting sleeve 6. The position of the threaded hole corresponds to the insertion position of the connecting sleeve 101 and the connecting shaft 7. By screwing a set screw 8 into the threaded hole, the adapter sleeve 3 is mechanically locked to both the connecting sleeve 101 and the connecting shaft 7. The lower end of the connecting shaft 7 is the power transmission input end, which is connected to external testing equipment via a coupling 10 to achieve torque transmission.

[0039] By designing the adapter shaft as a separate structure, this invention can be flexibly selected under different installation conditions.

[0040] Two locking planes parallel to the axis are machined on the outer wall of the connecting sleeve 101. The two locking planes are parallel to each other, which can provide a stable contact surface for the end of the set screw 8 and enhance the reliability of locking.

[0041] To further ensure the stability of the connection between the tensioning sleeve 1 and the reducer 11, and to prevent swaying during testing from affecting the test results, a flange 9 is added to the outside of the adapter shaft sleeve structure. The flange 9 is fixed to the reducer 11 by locking screws, and the adapter shaft sleeve structure is inserted into the inner hole of the flange 9, forming a loose fit. That is, if the adapter shaft is a one-piece structure, the adapter sleeve 3 is inserted into the inner hole of the flange 9. If the adapter shaft is a separate structure, the connecting sleeve 6 is inserted into the inner hole of the flange 9.

Claims

1. An auxiliary tooling for detecting the transmission accuracy of a bore-type reducer, comprising a clamping mechanism and a connecting component, characterized in that: The clamping mechanism includes a tensioning sleeve (1) and a tensioning screw (2), and the connecting part is an adapter shaft; The front section of the tensioning sleeve (1) is an expandable expansion sleeve (102), and the rear section is a cylindrical connecting sleeve (101). The tensioning sleeve (1) has a stepped through hole at its axial position. The diameter of the through hole decreases stepwise from back to front, and in sequence, it consists of a mounting hole (104), a screw hole (105), a transition hole (106), and an expansion hole (107). The screw hole (105) has an internal thread. The expansion hole (107) is connected to the transition hole (106) through a tapered transition surface. The expansion sleeve (102) has an elastic groove (103) along its axial direction, and the outer wall of the expansion sleeve (102) is smooth. The tensioning screw (2) includes a nut (201), a screw (202), a positioning section (203), and an expansion end (204); the diameter of the nut (201) is smaller than the diameter of the mounting hole (104); the screw (202) has an external thread that matches the screw hole (105); the positioning section (203) is a smooth rod that is clearance-fitted with the transition hole (106); the expansion end (204) has a conical head, and the taper of the expansion end (204) matches the taper of the conical transition surface of the tensioning sleeve (1); the tensioning screw (2) is screwed into the through hole of the tensioning sleeve (1), the screw (202) is threadedly connected to the screw hole (105), and the conical head of the expansion end (204) extends into the expansion hole (107) along the conical transition surface, and the expansion hole (107) is squeezed by the expansion end (204) to cause the expansion sleeve (102) to expand outward; The expansion sleeve (102) can be inserted into the top circle of the inner spline at the input or output end of the reducer (11); one end of the adapter shaft is a sleeve structure and the other end is a coaxial rod structure. The sleeve structure of the adapter shaft is fixedly connected to the connecting sleeve (101) of the tensioning sleeve (1). The shaft of the adapter shaft is connected to the external testing equipment through the coupling (10).

2. The auxiliary tooling for detecting the transmission accuracy of a bore-type reducer as described in claim 1, characterized in that: The adapter shaft is an integral structure, with the sleeve structure being the adapter sleeve (3) and the rod structure being the shaft (4). The adapter sleeve (3) is coaxially arranged at the end of the shaft (4). The adapter sleeve (3) has a central blind hole (5). The inner diameter of the central blind hole (5) is adapted to the outer diameter of the connecting sleeve (101) of the tensioning sleeve (1), forming a clearance fit. The adapter sleeve (3) and the connecting sleeve (101) are mechanically locked together by a set screw (8).

3. The auxiliary tooling for detecting the transmission accuracy of a bore-type reducer as described in claim 1, characterized in that: The adapter shaft is a split structure, with a sleeve structure as the connecting sleeve (6) and a rod-shaped structure as the connecting shaft (7). The connecting sleeve (6) is a cylindrical component. The upper end of the connecting sleeve (6) is inserted into the connecting sleeve (101) to form a clearance fit, and the lower end of the connecting sleeve (6) is inserted into the upper end of the connecting shaft (7). The connecting sleeve (6) is mechanically locked to the connecting sleeve (101) and the connecting shaft (7) respectively by a set screw (8).

4. An auxiliary tooling for detecting the transmission accuracy of a bore-type reducer as described in claim 2 or 3, characterized in that: The outer wall of the sleeve (101) is provided with two locking planes (108) that are mutually locking, and the locking planes (108) can fit with the end of the set screw (8).

5. The auxiliary tooling for detecting the transmission accuracy of a bore-type reducer as described in claim 1, characterized in that: The expansion sleeve (102) has four axial elastic grooves (103) evenly distributed along the circumference of the sleeve wall.

6. The auxiliary tooling for detecting the transmission accuracy of a bore-type reducer as described in claim 1, characterized in that: The outer wall of the expansion sleeve (102) is provided with a knurled surface or a wear-resistant coating.

7. The auxiliary tooling for detecting the transmission accuracy of a bore-type reducer as described in claim 1, characterized in that: The sleeve structure of the adapter shaft is fitted with a flange (9), which is fixedly connected to the reducer (11). The inner hole of the flange (9) is loosely fitted with the sleeve structure of the connecting shaft (7).

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